1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1172.2.93.4.8 2018/03/28 10:22:10 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
80: %managerstab);
81:
82: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
83: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
84: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
85: %courseownerbuf, %coursetypebuf,$locknum);
86:
87: use IO::Socket;
88: use GDBM_File;
89: use HTML::LCParser;
90: use Fcntl qw(:flock);
91: use Storable qw(thaw nfreeze);
92: use Time::HiRes qw( sleep gettimeofday tv_interval );
93: use Cache::Memcached;
94: use Digest::MD5;
95: use Math::Random;
96: use File::MMagic;
97: use LONCAPA qw(:DEFAULT :match);
98: use LONCAPA::Configuration;
99: use LONCAPA::lonmetadata;
100: use LONCAPA::Lond;
101:
102: use File::Copy;
103:
104: my $readit;
105: my $max_connection_retries = 20; # Or some such value.
106:
107: require Exporter;
108:
109: our @ISA = qw (Exporter);
110: our @EXPORT = qw(%env);
111:
112: # ------------------------------------ Logging (parameters, docs, slots, roles)
113: {
114: my $logid;
115: sub write_log {
116: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
117: if ($context eq 'course') {
118: if (($cnum eq '') || ($cdom eq '')) {
119: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
120: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
121: }
122: }
123: $logid ++;
124: my $now = time();
125: my $id=$now.'00000'.$$.'00000'.$logid;
126: my $logentry = {
127: $id => {
128: 'exe_uname' => $env{'user.name'},
129: 'exe_udom' => $env{'user.domain'},
130: 'exe_time' => $now,
131: 'exe_ip' => $ENV{'REMOTE_ADDR'},
132: 'delflag' => $delflag,
133: 'logentry' => $storehash,
134: 'uname' => $uname,
135: 'udom' => $udom,
136: }
137: };
138: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
139: }
140: }
141:
142: sub logtouch {
143: my $execdir=$perlvar{'lonDaemons'};
144: unless (-e "$execdir/logs/lonnet.log") {
145: open(my $fh,">>","$execdir/logs/lonnet.log");
146: close $fh;
147: }
148: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
149: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
150: }
151:
152: sub logthis {
153: my $message=shift;
154: my $execdir=$perlvar{'lonDaemons'};
155: my $now=time;
156: my $local=localtime($now);
157: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
158: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
159: print $fh $logstring;
160: close($fh);
161: }
162: return 1;
163: }
164:
165: sub logperm {
166: my $message=shift;
167: my $execdir=$perlvar{'lonDaemons'};
168: my $now=time;
169: my $local=localtime($now);
170: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
171: print $fh "$now:$message:$local\n";
172: close($fh);
173: }
174: return 1;
175: }
176:
177: sub create_connection {
178: my ($hostname,$lonid) = @_;
179: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
180: Type => SOCK_STREAM,
181: Timeout => 10);
182: return 0 if (!$client);
183: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
184: my $result = <$client>;
185: chomp($result);
186: return 1 if ($result eq 'done');
187: return 0;
188: }
189:
190: sub get_server_timezone {
191: my ($cnum,$cdom) = @_;
192: my $home=&homeserver($cnum,$cdom);
193: if ($home ne 'no_host') {
194: my $cachetime = 24*3600;
195: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
196: if (defined($cached)) {
197: return $timezone;
198: } else {
199: my $timezone = &reply('servertimezone',$home);
200: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
201: }
202: }
203: }
204:
205: sub get_server_distarch {
206: my ($lonhost,$ignore_cache) = @_;
207: if (defined($lonhost)) {
208: if (!defined(&hostname($lonhost))) {
209: return;
210: }
211: my $cachetime = 12*3600;
212: if (!$ignore_cache) {
213: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
214: if (defined($cached)) {
215: return $distarch;
216: }
217: }
218: my $rep = &reply('serverdistarch',$lonhost);
219: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
220: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
221: $rep eq '') {
222: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
223: }
224: }
225: return;
226: }
227:
228: sub get_server_loncaparev {
229: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
230: if (defined($lonhost)) {
231: if (!defined(&hostname($lonhost))) {
232: undef($lonhost);
233: }
234: }
235: if (!defined($lonhost)) {
236: if (defined(&domain($dom,'primary'))) {
237: $lonhost=&domain($dom,'primary');
238: if ($lonhost eq 'no_host') {
239: undef($lonhost);
240: }
241: }
242: }
243: if (defined($lonhost)) {
244: my $cachetime = 12*3600;
245: if (!$ignore_cache) {
246: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
247: if (defined($cached)) {
248: return $loncaparev;
249: }
250: }
251: my ($answer,$loncaparev);
252: my @ids=¤t_machine_ids();
253: if (grep(/^\Q$lonhost\E$/,@ids)) {
254: $answer = $perlvar{'lonVersion'};
255: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
256: $loncaparev = $1;
257: }
258: } else {
259: $answer = &reply('serverloncaparev',$lonhost);
260: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
261: if ($caller eq 'loncron') {
262: my $ua=new LWP::UserAgent;
263: $ua->timeout(4);
264: my $protocol = $protocol{$lonhost};
265: $protocol = 'http' if ($protocol ne 'https');
266: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
267: my $request=new HTTP::Request('GET',$url);
268: my $response=$ua->request($request);
269: unless ($response->is_error()) {
270: my $content = $response->content;
271: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
272: $loncaparev = $1;
273: }
274: }
275: } else {
276: $loncaparev = $loncaparevs{$lonhost};
277: }
278: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
279: $loncaparev = $1;
280: }
281: }
282: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
283: }
284: }
285:
286: sub get_server_homeID {
287: my ($hostname,$ignore_cache,$caller) = @_;
288: unless ($ignore_cache) {
289: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
290: if (defined($cached)) {
291: return $serverhomeID;
292: }
293: }
294: my $cachetime = 12*3600;
295: my $serverhomeID;
296: if ($caller eq 'loncron') {
297: my @machine_ids = &machine_ids($hostname);
298: foreach my $id (@machine_ids) {
299: my $response = &reply('serverhomeID',$id);
300: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
301: $serverhomeID = $response;
302: last;
303: }
304: }
305: if ($serverhomeID eq '') {
306: $serverhomeID = $machine_ids[-1];
307: }
308: } else {
309: $serverhomeID = $serverhomeIDs{$hostname};
310: }
311: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
312: }
313:
314: sub get_remote_globals {
315: my ($lonhost,$whathash,$ignore_cache) = @_;
316: my ($result,%returnhash,%whatneeded);
317: if (ref($whathash) eq 'HASH') {
318: foreach my $what (sort(keys(%{$whathash}))) {
319: my $hashid = $lonhost.'-'.$what;
320: my ($response,$cached);
321: unless ($ignore_cache) {
322: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
323: }
324: if (defined($cached)) {
325: $returnhash{$what} = $response;
326: } else {
327: $whatneeded{$what} = 1;
328: }
329: }
330: if (keys(%whatneeded) == 0) {
331: $result = 'ok';
332: } else {
333: my $requested = &freeze_escape(\%whatneeded);
334: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
335: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
336: ($rep eq 'unknown_cmd')) {
337: $result = $rep;
338: } else {
339: $result = 'ok';
340: my @pairs=split(/\&/,$rep);
341: foreach my $item (@pairs) {
342: my ($key,$value)=split(/=/,$item,2);
343: my $what = &unescape($key);
344: my $hashid = $lonhost.'-'.$what;
345: $returnhash{$what}=&thaw_unescape($value);
346: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
347: }
348: }
349: }
350: }
351: return ($result,\%returnhash);
352: }
353:
354: sub remote_devalidate_cache {
355: my ($lonhost,$cachekeys) = @_;
356: my $items;
357: return unless (ref($cachekeys) eq 'ARRAY');
358: my $cachestr = join('&',@{$cachekeys});
359: return &reply('devalidatecache:'.&escape($cachestr),$lonhost);
360: }
361:
362: # -------------------------------------------------- Non-critical communication
363: sub subreply {
364: my ($cmd,$server)=@_;
365: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
366: #
367: # With loncnew process trimming, there's a timing hole between lonc server
368: # process exit and the master server picking up the listen on the AF_UNIX
369: # socket. In that time interval, a lock file will exist:
370:
371: my $lockfile=$peerfile.".lock";
372: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
373: sleep(0.1);
374: }
375: # At this point, either a loncnew parent is listening or an old lonc
376: # or loncnew child is listening so we can connect or everything's dead.
377: #
378: # We'll give the connection a few tries before abandoning it. If
379: # connection is not possible, we'll con_lost back to the client.
380: #
381: my $client;
382: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
383: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
384: Type => SOCK_STREAM,
385: Timeout => 10);
386: if ($client) {
387: last; # Connected!
388: } else {
389: &create_connection(&hostname($server),$server);
390: }
391: sleep(0.1); # Try again later if failed connection.
392: }
393: my $answer;
394: if ($client) {
395: print $client "sethost:$server:$cmd\n";
396: $answer=<$client>;
397: if (!$answer) { $answer="con_lost"; }
398: chomp($answer);
399: } else {
400: $answer = 'con_lost'; # Failed connection.
401: }
402: return $answer;
403: }
404:
405: sub reply {
406: my ($cmd,$server)=@_;
407: unless (defined(&hostname($server))) { return 'no_such_host'; }
408: my $answer=subreply($cmd,$server);
409: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
410: &logthis("<font color=\"blue\">WARNING:".
411: " $cmd to $server returned $answer</font>");
412: }
413: return $answer;
414: }
415:
416: # ----------------------------------------------------------- Send USR1 to lonc
417:
418: sub reconlonc {
419: my ($lonid) = @_;
420: if ($lonid) {
421: my $hostname = &hostname($lonid);
422: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
423: if ($hostname && -e $peerfile) {
424: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
425: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
426: Type => SOCK_STREAM,
427: Timeout => 10);
428: if ($client) {
429: print $client ("reset_retries\n");
430: my $answer=<$client>;
431: #reset just this one.
432: }
433: }
434: return;
435: }
436:
437: &logthis("Trying to reconnect lonc");
438: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
439: if (open(my $fh,"<",$loncfile)) {
440: my $loncpid=<$fh>;
441: chomp($loncpid);
442: if (kill 0 => $loncpid) {
443: &logthis("lonc at pid $loncpid responding, sending USR1");
444: kill USR1 => $loncpid;
445: sleep 1;
446: } else {
447: &logthis(
448: "<font color=\"blue\">WARNING:".
449: " lonc at pid $loncpid not responding, giving up</font>");
450: }
451: } else {
452: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
453: }
454: }
455:
456: # ------------------------------------------------------ Critical communication
457:
458: sub critical {
459: my ($cmd,$server)=@_;
460: unless (&hostname($server)) {
461: &logthis("<font color=\"blue\">WARNING:".
462: " Critical message to unknown server ($server)</font>");
463: return 'no_such_host';
464: }
465: my $answer=reply($cmd,$server);
466: if ($answer eq 'con_lost') {
467: &reconlonc($server);
468: my $answer=reply($cmd,$server);
469: if ($answer eq 'con_lost') {
470: my $now=time;
471: my $middlename=$cmd;
472: $middlename=substr($middlename,0,16);
473: $middlename=~s/\W//g;
474: my $dfilename=
475: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
476: $dumpcount++;
477: {
478: my $dfh;
479: if (open($dfh,">",$dfilename)) {
480: print $dfh "$cmd\n";
481: close($dfh);
482: }
483: }
484: sleep 1;
485: my $wcmd='';
486: {
487: my $dfh;
488: if (open($dfh,"<",$dfilename)) {
489: $wcmd=<$dfh>;
490: close($dfh);
491: }
492: }
493: chomp($wcmd);
494: if ($wcmd eq $cmd) {
495: &logthis("<font color=\"blue\">WARNING: ".
496: "Connection buffer $dfilename: $cmd</font>");
497: &logperm("D:$server:$cmd");
498: return 'con_delayed';
499: } else {
500: &logthis("<font color=\"red\">CRITICAL:"
501: ." Critical connection failed: $server $cmd</font>");
502: &logperm("F:$server:$cmd");
503: return 'con_failed';
504: }
505: }
506: }
507: return $answer;
508: }
509:
510: # ------------------------------------------- check if return value is an error
511:
512: sub error {
513: my ($result) = @_;
514: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
515: if ($2 == 2) { return undef; }
516: return $1;
517: }
518: return undef;
519: }
520:
521: sub convert_and_load_session_env {
522: my ($lonidsdir,$handle)=@_;
523: my @profile;
524: {
525: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
526: if (!$opened) {
527: return 0;
528: }
529: flock($idf,LOCK_SH);
530: @profile=<$idf>;
531: close($idf);
532: }
533: my %temp_env;
534: foreach my $line (@profile) {
535: if ($line !~ m/=/) {
536: return 0;
537: }
538: chomp($line);
539: my ($envname,$envvalue)=split(/=/,$line,2);
540: $temp_env{&unescape($envname)} = &unescape($envvalue);
541: }
542: unlink("$lonidsdir/$handle.id");
543: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
544: 0640)) {
545: %disk_env = %temp_env;
546: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
547: untie(%disk_env);
548: }
549: return 1;
550: }
551:
552: # ------------------------------------------- Transfer profile into environment
553: my $env_loaded;
554: sub transfer_profile_to_env {
555: my ($lonidsdir,$handle,$force_transfer) = @_;
556: if (!$force_transfer && $env_loaded) { return; }
557:
558: if (!defined($lonidsdir)) {
559: $lonidsdir = $perlvar{'lonIDsDir'};
560: }
561: if (!defined($handle)) {
562: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
563: }
564:
565: my $convert;
566: {
567: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
568: if (!$opened) {
569: return;
570: }
571: flock($idf,LOCK_SH);
572: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
573: &GDBM_READER(),0640)) {
574: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
575: untie(%disk_env);
576: } else {
577: $convert = 1;
578: }
579: }
580: if ($convert) {
581: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
582: &logthis("Failed to load session, or convert session.");
583: }
584: }
585:
586: my %remove;
587: while ( my $envname = each(%env) ) {
588: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
589: if ($time < time-300) {
590: $remove{$key}++;
591: }
592: }
593: }
594:
595: $env{'user.environment'} = "$lonidsdir/$handle.id";
596: $env_loaded=1;
597: foreach my $expired_key (keys(%remove)) {
598: &delenv($expired_key);
599: }
600: }
601:
602: # ---------------------------------------------------- Check for valid session
603: sub check_for_valid_session {
604: my ($r,$name,$userhashref,$domref) = @_;
605: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
606: if ($name eq '') {
607: $name = 'lonID';
608: }
609: my $lonid=$cookies{$name};
610: return undef if (!$lonid);
611:
612: my $handle=&LONCAPA::clean_handle($lonid->value);
613: my $lonidsdir;
614: if ($name eq 'lonDAV') {
615: $lonidsdir=$r->dir_config('lonDAVsessDir');
616: } else {
617: $lonidsdir=$r->dir_config('lonIDsDir');
618: }
619: if (!-e "$lonidsdir/$handle.id") {
620: if ((ref($domref)) && ($name eq 'lonID') &&
621: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
622: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
623: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
624: $$domref = $possudom;
625: }
626: }
627: return undef;
628: }
629:
630: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
631: return undef if (!$opened);
632:
633: flock($idf,LOCK_SH);
634: my %disk_env;
635: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
636: &GDBM_READER(),0640)) {
637: return undef;
638: }
639:
640: if (!defined($disk_env{'user.name'})
641: || !defined($disk_env{'user.domain'})) {
642: return undef;
643: }
644:
645: if (ref($userhashref) eq 'HASH') {
646: $userhashref->{'name'} = $disk_env{'user.name'};
647: $userhashref->{'domain'} = $disk_env{'user.domain'};
648: }
649:
650: return $handle;
651: }
652:
653: sub timed_flock {
654: my ($file,$lock_type) = @_;
655: my $failed=0;
656: eval {
657: local $SIG{__DIE__}='DEFAULT';
658: local $SIG{ALRM}=sub {
659: $failed=1;
660: die("failed lock");
661: };
662: alarm(13);
663: flock($file,$lock_type);
664: alarm(0);
665: };
666: if ($failed) {
667: return undef;
668: } else {
669: return 1;
670: }
671: }
672:
673: # ---------------------------------------------------------- Append Environment
674:
675: sub appenv {
676: my ($newenv,$roles) = @_;
677: if (ref($newenv) eq 'HASH') {
678: foreach my $key (keys(%{$newenv})) {
679: my $refused = 0;
680: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
681: $refused = 1;
682: if (ref($roles) eq 'ARRAY') {
683: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
684: if (grep(/^\Q$role\E$/,@{$roles})) {
685: $refused = 0;
686: }
687: }
688: }
689: if ($refused) {
690: &logthis("<font color=\"blue\">WARNING: ".
691: "Attempt to modify environment ".$key." to ".$newenv->{$key}
692: .'</font>');
693: delete($newenv->{$key});
694: } else {
695: $env{$key}=$newenv->{$key};
696: }
697: }
698: my $opened = open(my $env_file,'+<',$env{'user.environment'});
699: if ($opened
700: && &timed_flock($env_file,LOCK_EX)
701: &&
702: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
703: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
704: while (my ($key,$value) = each(%{$newenv})) {
705: $disk_env{$key} = $value;
706: }
707: untie(%disk_env);
708: }
709: }
710: return 'ok';
711: }
712: # ----------------------------------------------------- Delete from Environment
713:
714: sub delenv {
715: my ($delthis,$regexp,$roles) = @_;
716: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
717: my $refused = 1;
718: if (ref($roles) eq 'ARRAY') {
719: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
720: if (grep(/^\Q$role\E$/,@{$roles})) {
721: $refused = 0;
722: }
723: }
724: if ($refused) {
725: &logthis("<font color=\"blue\">WARNING: ".
726: "Attempt to delete from environment ".$delthis);
727: return 'error';
728: }
729: }
730: my $opened = open(my $env_file,'+<',$env{'user.environment'});
731: if ($opened
732: && &timed_flock($env_file,LOCK_EX)
733: &&
734: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
735: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
736: foreach my $key (keys(%disk_env)) {
737: if ($regexp) {
738: if ($key=~/^$delthis/) {
739: delete($env{$key});
740: delete($disk_env{$key});
741: }
742: } else {
743: if ($key=~/^\Q$delthis\E/) {
744: delete($env{$key});
745: delete($disk_env{$key});
746: }
747: }
748: }
749: untie(%disk_env);
750: }
751: return 'ok';
752: }
753:
754: sub get_env_multiple {
755: my ($name) = @_;
756: my @values;
757: if (defined($env{$name})) {
758: # exists is it an array
759: if (ref($env{$name})) {
760: @values=@{ $env{$name} };
761: } else {
762: $values[0]=$env{$name};
763: }
764: }
765: return(@values);
766: }
767:
768: # ------------------------------------------------------------------- Locking
769:
770: sub set_lock {
771: my ($text)=@_;
772: $locknum++;
773: my $id=$$.'-'.$locknum;
774: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
775: 'session.lock.'.$id => $text});
776: return $id;
777: }
778:
779: sub get_locks {
780: my $num=0;
781: my %texts=();
782: foreach my $lock (split(/\,/,$env{'session.locks'})) {
783: if ($lock=~/\w/) {
784: $num++;
785: $texts{$lock}=$env{'session.lock.'.$lock};
786: }
787: }
788: return ($num,%texts);
789: }
790:
791: sub remove_lock {
792: my ($id)=@_;
793: my $newlocks='';
794: foreach my $lock (split(/\,/,$env{'session.locks'})) {
795: if (($lock=~/\w/) && ($lock ne $id)) {
796: $newlocks.=','.$lock;
797: }
798: }
799: &appenv({'session.locks' => $newlocks});
800: &delenv('session.lock.'.$id);
801: }
802:
803: sub remove_all_locks {
804: my $activelocks=$env{'session.locks'};
805: foreach my $lock (split(/\,/,$env{'session.locks'})) {
806: if ($lock=~/\w/) {
807: &remove_lock($lock);
808: }
809: }
810: }
811:
812:
813: # ------------------------------------------ Find out current server userload
814: sub userload {
815: my $numusers=0;
816: {
817: opendir(LONIDS,$perlvar{'lonIDsDir'});
818: my $filename;
819: my $curtime=time;
820: while ($filename=readdir(LONIDS)) {
821: next if ($filename eq '.' || $filename eq '..');
822: next if ($filename =~ /publicuser_\d+\.id/);
823: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
824: if ($curtime-$mtime < 1800) { $numusers++; }
825: }
826: closedir(LONIDS);
827: }
828: my $userloadpercent=0;
829: my $maxuserload=$perlvar{'lonUserLoadLim'};
830: if ($maxuserload) {
831: $userloadpercent=100*$numusers/$maxuserload;
832: }
833: $userloadpercent=sprintf("%.2f",$userloadpercent);
834: return $userloadpercent;
835: }
836:
837: # ------------------------------ Find server with least workload from spare.tab
838:
839: sub spareserver {
840: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
841: my $spare_server;
842: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
843: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
844: : $userloadpercent;
845: my ($uint_dom,$remotesessions);
846: if (($udom ne '') && (&domain($udom) ne '')) {
847: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
848: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
849: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
850: $remotesessions = $udomdefaults{'remotesessions'};
851: }
852: my $spareshash = &this_host_spares($udom);
853: if (ref($spareshash) eq 'HASH') {
854: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
855: foreach my $try_server (@{ $spareshash->{'primary'} }) {
856: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
857: $try_server));
858: ($spare_server, $lowest_load) =
859: &compare_server_load($try_server, $spare_server, $lowest_load);
860: }
861: }
862:
863: my $found_server = ($spare_server ne '' && $lowest_load < 100);
864:
865: if (!$found_server) {
866: if (ref($spareshash->{'default'}) eq 'ARRAY') {
867: foreach my $try_server (@{ $spareshash->{'default'} }) {
868: next unless (&spare_can_host($udom,$uint_dom,
869: $remotesessions,$try_server));
870: ($spare_server, $lowest_load) =
871: &compare_server_load($try_server, $spare_server, $lowest_load);
872: }
873: }
874: }
875: }
876:
877: if (!$want_server_name) {
878: my $protocol = 'http';
879: if ($protocol{$spare_server} eq 'https') {
880: $protocol = $protocol{$spare_server};
881: }
882: if (defined($spare_server)) {
883: my $hostname = &hostname($spare_server);
884: if (defined($hostname)) {
885: $spare_server = $protocol.'://'.$hostname;
886: }
887: }
888: }
889: return $spare_server;
890: }
891:
892: sub compare_server_load {
893: my ($try_server, $spare_server, $lowest_load, $required) = @_;
894:
895: if ($required) {
896: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
897: my $remoterev = &get_server_loncaparev(undef,$try_server);
898: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
899: if (($major eq '' && $minor eq '') ||
900: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
901: return ($spare_server,$lowest_load);
902: }
903: }
904:
905: my $loadans = &reply('load', $try_server);
906: my $userloadans = &reply('userload',$try_server);
907:
908: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
909: return ($spare_server, $lowest_load); #didn't get a number from the server
910: }
911:
912: my $load;
913: if ($loadans =~ /\d/) {
914: if ($userloadans =~ /\d/) {
915: #both are numbers, pick the bigger one
916: $load = ($loadans > $userloadans) ? $loadans
917: : $userloadans;
918: } else {
919: $load = $loadans;
920: }
921: } else {
922: $load = $userloadans;
923: }
924:
925: if (($load =~ /\d/) && ($load < $lowest_load)) {
926: $spare_server = $try_server;
927: $lowest_load = $load;
928: }
929: return ($spare_server,$lowest_load);
930: }
931:
932: # --------------------------- ask offload servers if user already has a session
933: sub find_existing_session {
934: my ($udom,$uname) = @_;
935: my $spareshash = &this_host_spares($udom);
936: if (ref($spareshash) eq 'HASH') {
937: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
938: foreach my $try_server (@{ $spareshash->{'primary'} }) {
939: return $try_server if (&has_user_session($try_server, $udom, $uname));
940: }
941: }
942: if (ref($spareshash->{'default'}) eq 'ARRAY') {
943: foreach my $try_server (@{ $spareshash->{'default'} }) {
944: return $try_server if (&has_user_session($try_server, $udom, $uname));
945: }
946: }
947: }
948: return;
949: }
950:
951: # -------------------------------- ask if server already has a session for user
952: sub has_user_session {
953: my ($lonid,$udom,$uname) = @_;
954: my $result = &reply(join(':','userhassession',
955: map {&escape($_)} ($udom,$uname)),$lonid);
956: return 1 if ($result eq 'ok');
957:
958: return 0;
959: }
960:
961: # --------- determine least loaded server in a user's domain which allows login
962:
963: sub choose_server {
964: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
965: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
966: my %servers = &get_servers($udom);
967: my $lowest_load = 30000;
968: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
969: if ($skiploadbal) {
970: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
971: unless (defined($cached)) {
972: my $cachetime = 60*60*24;
973: my %domconfig =
974: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
975: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
976: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
977: $cachetime);
978: }
979: }
980: }
981: foreach my $lonhost (keys(%servers)) {
982: my $loginvia;
983: if ($skiploadbal) {
984: if (ref($balancers) eq 'HASH') {
985: next if (exists($balancers->{$lonhost}));
986: }
987: }
988: if ($checkloginvia) {
989: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
990: if ($loginvia) {
991: my ($server,$path) = split(/:/,$loginvia);
992: ($login_host, $lowest_load) =
993: &compare_server_load($server, $login_host, $lowest_load, $required);
994: if ($login_host eq $server) {
995: $portal_path = $path;
996: $isredirect = 1;
997: }
998: } else {
999: ($login_host, $lowest_load) =
1000: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1001: if ($login_host eq $lonhost) {
1002: $portal_path = '';
1003: $isredirect = '';
1004: }
1005: }
1006: } else {
1007: ($login_host, $lowest_load) =
1008: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1009: }
1010: }
1011: if ($login_host ne '') {
1012: $hostname = &hostname($login_host);
1013: }
1014: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1015: }
1016:
1017: # --------------------------------------------- Try to change a user's password
1018:
1019: sub changepass {
1020: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1021: $currentpass = &escape($currentpass);
1022: $newpass = &escape($newpass);
1023: my $lonhost = $perlvar{'lonHostID'};
1024: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1025: $server);
1026: if (! $answer) {
1027: &logthis("No reply on password change request to $server ".
1028: "by $uname in domain $udom.");
1029: } elsif ($answer =~ "^ok") {
1030: &logthis("$uname in $udom successfully changed their password ".
1031: "on $server.");
1032: } elsif ($answer =~ "^pwchange_failure") {
1033: &logthis("$uname in $udom was unable to change their password ".
1034: "on $server. The action was blocked by either lcpasswd ".
1035: "or pwchange");
1036: } elsif ($answer =~ "^non_authorized") {
1037: &logthis("$uname in $udom did not get their password correct when ".
1038: "attempting to change it on $server.");
1039: } elsif ($answer =~ "^auth_mode_error") {
1040: &logthis("$uname in $udom attempted to change their password despite ".
1041: "not being locally or internally authenticated on $server.");
1042: } elsif ($answer =~ "^unknown_user") {
1043: &logthis("$uname in $udom attempted to change their password ".
1044: "on $server but were unable to because $server is not ".
1045: "their home server.");
1046: } elsif ($answer =~ "^refused") {
1047: &logthis("$server refused to change $uname in $udom password because ".
1048: "it was sent an unencrypted request to change the password.");
1049: } elsif ($answer =~ "invalid_client") {
1050: &logthis("$server refused to change $uname in $udom password because ".
1051: "it was a reset by e-mail originating from an invalid server.");
1052: }
1053: return $answer;
1054: }
1055:
1056: # ----------------------- Try to determine user's current authentication scheme
1057:
1058: sub queryauthenticate {
1059: my ($uname,$udom)=@_;
1060: my $uhome=&homeserver($uname,$udom);
1061: if (!$uhome) {
1062: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1063: return 'no_host';
1064: }
1065: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1066: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1067: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1068: }
1069: return $answer;
1070: }
1071:
1072: # --------- Try to authenticate user from domain's lib servers (first this one)
1073:
1074: sub authenticate {
1075: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1076: $upass=&escape($upass);
1077: $uname= &LONCAPA::clean_username($uname);
1078: my $uhome=&homeserver($uname,$udom,1);
1079: my $newhome;
1080: if ((!$uhome) || ($uhome eq 'no_host')) {
1081: # Maybe the machine was offline and only re-appeared again recently?
1082: &reconlonc();
1083: # One more
1084: $uhome=&homeserver($uname,$udom,1);
1085: if (($uhome eq 'no_host') && $checkdefauth) {
1086: if (defined(&domain($udom,'primary'))) {
1087: $newhome=&domain($udom,'primary');
1088: }
1089: if ($newhome ne '') {
1090: $uhome = $newhome;
1091: }
1092: }
1093: if ((!$uhome) || ($uhome eq 'no_host')) {
1094: &logthis("User $uname at $udom is unknown in authenticate");
1095: return 'no_host';
1096: }
1097: }
1098: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1099: if ($answer eq 'authorized') {
1100: if ($newhome) {
1101: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1102: return 'no_account_on_host';
1103: } else {
1104: &logthis("User $uname at $udom authorized by $uhome");
1105: return $uhome;
1106: }
1107: }
1108: if ($answer eq 'non_authorized') {
1109: &logthis("User $uname at $udom rejected by $uhome");
1110: return 'no_host';
1111: }
1112: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1113: return 'no_host';
1114: }
1115:
1116: sub can_host_session {
1117: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1118: my $canhost = 1;
1119: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1120: if (ref($remotesessions) eq 'HASH') {
1121: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1122: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1123: $canhost = 0;
1124: } else {
1125: $canhost = 1;
1126: }
1127: }
1128: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1129: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1130: $canhost = 1;
1131: } else {
1132: $canhost = 0;
1133: }
1134: }
1135: if ($canhost) {
1136: if ($remotesessions->{'version'} ne '') {
1137: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1138: if ($reqmajor ne '' && $reqminor ne '') {
1139: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1140: my $major = $1;
1141: my $minor = $2;
1142: if (($major < $reqmajor ) ||
1143: (($major == $reqmajor) && ($minor < $reqminor))) {
1144: $canhost = 0;
1145: }
1146: } else {
1147: $canhost = 0;
1148: }
1149: }
1150: }
1151: }
1152: }
1153: if ($canhost) {
1154: if (ref($hostedsessions) eq 'HASH') {
1155: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1156: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1157: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1158: if (($uint_dom ne '') &&
1159: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1160: $canhost = 0;
1161: } else {
1162: $canhost = 1;
1163: }
1164: }
1165: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1166: if (($uint_dom ne '') &&
1167: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1168: $canhost = 1;
1169: } else {
1170: $canhost = 0;
1171: }
1172: }
1173: }
1174: }
1175: return $canhost;
1176: }
1177:
1178: sub spare_can_host {
1179: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1180: my $canhost=1;
1181: my $try_server_hostname = &hostname($try_server);
1182: my $serverhomeID = &get_server_homeID($try_server_hostname);
1183: my $serverhomedom = &host_domain($serverhomeID);
1184: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1185: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1186: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1187: $canhost = 0;
1188: }
1189: }
1190: if (($canhost) && ($uint_dom)) {
1191: my @intdoms;
1192: my $internet_names = &get_internet_names($try_server);
1193: if (ref($internet_names) eq 'ARRAY') {
1194: @intdoms = @{$internet_names};
1195: }
1196: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1197: my $remoterev = &get_server_loncaparev(undef,$try_server);
1198: $canhost = &can_host_session($udom,$try_server,$remoterev,
1199: $remotesessions,
1200: $defdomdefaults{'hostedsessions'});
1201: }
1202: }
1203: return $canhost;
1204: }
1205:
1206: sub this_host_spares {
1207: my ($dom) = @_;
1208: my ($dom_in_use,$lonhost_in_use,$result);
1209: my @hosts = ¤t_machine_ids();
1210: foreach my $lonhost (@hosts) {
1211: if (&host_domain($lonhost) eq $dom) {
1212: $dom_in_use = $dom;
1213: $lonhost_in_use = $lonhost;
1214: last;
1215: }
1216: }
1217: if ($dom_in_use ne '') {
1218: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1219: }
1220: if (ref($result) ne 'HASH') {
1221: $lonhost_in_use = $perlvar{'lonHostID'};
1222: $dom_in_use = &host_domain($lonhost_in_use);
1223: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1224: if (ref($result) ne 'HASH') {
1225: $result = \%spareid;
1226: }
1227: }
1228: return $result;
1229: }
1230:
1231: sub spares_for_offload {
1232: my ($dom_in_use,$lonhost_in_use) = @_;
1233: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1234: if (defined($cached)) {
1235: return $result;
1236: } else {
1237: my $cachetime = 60*60*24;
1238: my %domconfig =
1239: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1240: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1241: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1242: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1243: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1244: }
1245: }
1246: }
1247: }
1248: return;
1249: }
1250:
1251: sub get_lonbalancer_config {
1252: my ($servers) = @_;
1253: my ($currbalancer,$currtargets);
1254: if (ref($servers) eq 'HASH') {
1255: foreach my $server (keys(%{$servers})) {
1256: my %what = (
1257: spareid => 1,
1258: perlvar => 1,
1259: );
1260: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1261: if ($result eq 'ok') {
1262: if (ref($returnhash) eq 'HASH') {
1263: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1264: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1265: $currbalancer = $server;
1266: $currtargets = {};
1267: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1268: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1269: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1270: }
1271: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1272: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1273: }
1274: }
1275: last;
1276: }
1277: }
1278: }
1279: }
1280: }
1281: }
1282: return ($currbalancer,$currtargets);
1283: }
1284:
1285: sub check_loadbalancing {
1286: my ($uname,$udom,$caller) = @_;
1287: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1288: $rule_in_effect,$offloadto,$otherserver);
1289: my $lonhost = $perlvar{'lonHostID'};
1290: my @hosts = ¤t_machine_ids();
1291: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1292: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1293: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1294: my $serverhomedom = &host_domain($lonhost);
1295: my $domneedscache;
1296: my $cachetime = 60*60*24;
1297:
1298: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1299: $dom_in_use = $udom;
1300: $homeintdom = 1;
1301: } else {
1302: $dom_in_use = $serverhomedom;
1303: }
1304: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1305: unless (defined($cached)) {
1306: my %domconfig =
1307: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1308: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1309: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1310: } else {
1311: $domneedscache = $dom_in_use;
1312: }
1313: }
1314: if (ref($result) eq 'HASH') {
1315: ($is_balancer,$currtargets,$currrules) =
1316: &check_balancer_result($result,@hosts);
1317: if ($is_balancer) {
1318: if (ref($currrules) eq 'HASH') {
1319: if ($homeintdom) {
1320: if ($uname ne '') {
1321: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1322: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1323: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1324: $rule_in_effect = $currrules->{'_LC_author'};
1325: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1326: $rule_in_effect = $currrules->{'_LC_adv'}
1327: }
1328: }
1329: if ($rule_in_effect eq '') {
1330: my %userenv = &userenvironment($udom,$uname,'inststatus');
1331: if ($userenv{'inststatus'} ne '') {
1332: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1333: my ($othertitle,$usertypes,$types) =
1334: &Apache::loncommon::sorted_inst_types($udom);
1335: if (ref($types) eq 'ARRAY') {
1336: foreach my $type (@{$types}) {
1337: if (grep(/^\Q$type\E$/,@statuses)) {
1338: if (exists($currrules->{$type})) {
1339: $rule_in_effect = $currrules->{$type};
1340: }
1341: }
1342: }
1343: }
1344: } else {
1345: if (exists($currrules->{'default'})) {
1346: $rule_in_effect = $currrules->{'default'};
1347: }
1348: }
1349: }
1350: } else {
1351: if (exists($currrules->{'default'})) {
1352: $rule_in_effect = $currrules->{'default'};
1353: }
1354: }
1355: } else {
1356: if ($currrules->{'_LC_external'} ne '') {
1357: $rule_in_effect = $currrules->{'_LC_external'};
1358: }
1359: }
1360: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1361: $uname,$udom);
1362: }
1363: }
1364: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1365: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1366: unless (defined($cached)) {
1367: my %domconfig =
1368: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1369: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1370: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1371: } else {
1372: $domneedscache = $serverhomedom;
1373: }
1374: }
1375: if (ref($result) eq 'HASH') {
1376: ($is_balancer,$currtargets,$currrules) =
1377: &check_balancer_result($result,@hosts);
1378: if ($is_balancer) {
1379: if (ref($currrules) eq 'HASH') {
1380: if ($currrules->{'_LC_internetdom'} ne '') {
1381: $rule_in_effect = $currrules->{'_LC_internetdom'};
1382: }
1383: }
1384: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1385: $uname,$udom);
1386: }
1387: } else {
1388: if ($perlvar{'lonBalancer'} eq 'yes') {
1389: $is_balancer = 1;
1390: $offloadto = &this_host_spares($dom_in_use);
1391: }
1392: unless (defined($cached)) {
1393: $domneedscache = $serverhomedom;
1394: }
1395: }
1396: } else {
1397: if ($perlvar{'lonBalancer'} eq 'yes') {
1398: $is_balancer = 1;
1399: $offloadto = &this_host_spares($dom_in_use);
1400: }
1401: unless (defined($cached)) {
1402: $domneedscache = $serverhomedom;
1403: }
1404: }
1405: if ($domneedscache) {
1406: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1407: }
1408: if ($is_balancer) {
1409: my $lowest_load = 30000;
1410: if (ref($offloadto) eq 'HASH') {
1411: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1412: foreach my $try_server (@{$offloadto->{'primary'}}) {
1413: ($otherserver,$lowest_load) =
1414: &compare_server_load($try_server,$otherserver,$lowest_load);
1415: }
1416: }
1417: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1418:
1419: if (!$found_server) {
1420: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1421: foreach my $try_server (@{$offloadto->{'default'}}) {
1422: ($otherserver,$lowest_load) =
1423: &compare_server_load($try_server,$otherserver,$lowest_load);
1424: }
1425: }
1426: }
1427: } elsif (ref($offloadto) eq 'ARRAY') {
1428: if (@{$offloadto} == 1) {
1429: $otherserver = $offloadto->[0];
1430: } elsif (@{$offloadto} > 1) {
1431: foreach my $try_server (@{$offloadto}) {
1432: ($otherserver,$lowest_load) =
1433: &compare_server_load($try_server,$otherserver,$lowest_load);
1434: }
1435: }
1436: }
1437: unless ($caller eq 'login') {
1438: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1439: $is_balancer = 0;
1440: if ($uname ne '' && $udom ne '') {
1441: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1442:
1443: &appenv({'user.loadbalexempt' => $lonhost,
1444: 'user.loadbalcheck.time' => time});
1445: }
1446: }
1447: }
1448: }
1449: }
1450: return ($is_balancer,$otherserver);
1451: }
1452:
1453: sub check_balancer_result {
1454: my ($result,@hosts) = @_;
1455: my ($is_balancer,$currtargets,$currrules);
1456: if (ref($result) eq 'HASH') {
1457: if ($result->{'lonhost'} ne '') {
1458: my $currbalancer = $result->{'lonhost'};
1459: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1460: $is_balancer = 1;
1461: $currtargets = $result->{'targets'};
1462: $currrules = $result->{'rules'};
1463: }
1464: } else {
1465: foreach my $key (keys(%{$result})) {
1466: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1467: (ref($result->{$key}) eq 'HASH')) {
1468: $is_balancer = 1;
1469: $currrules = $result->{$key}{'rules'};
1470: $currtargets = $result->{$key}{'targets'};
1471: last;
1472: }
1473: }
1474: }
1475: }
1476: return ($is_balancer,$currtargets,$currrules);
1477: }
1478:
1479: sub get_loadbalancer_targets {
1480: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1481: my $offloadto;
1482: if ($rule_in_effect eq 'none') {
1483: return [$perlvar{'lonHostID'}];
1484: } elsif ($rule_in_effect eq '') {
1485: $offloadto = $currtargets;
1486: } else {
1487: if ($rule_in_effect eq 'homeserver') {
1488: my $homeserver = &homeserver($uname,$udom);
1489: if ($homeserver ne 'no_host') {
1490: $offloadto = [$homeserver];
1491: }
1492: } elsif ($rule_in_effect eq 'externalbalancer') {
1493: my %domconfig =
1494: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1495: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1496: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1497: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1498: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1499: }
1500: }
1501: } else {
1502: my %servers = &internet_dom_servers($udom);
1503: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1504: if (&hostname($remotebalancer) ne '') {
1505: $offloadto = [$remotebalancer];
1506: }
1507: }
1508: } elsif (&hostname($rule_in_effect) ne '') {
1509: $offloadto = [$rule_in_effect];
1510: }
1511: }
1512: return $offloadto;
1513: }
1514:
1515: sub internet_dom_servers {
1516: my ($dom) = @_;
1517: my (%uniqservers,%servers);
1518: my $primaryserver = &hostname(&domain($dom,'primary'));
1519: my @machinedoms = &machine_domains($primaryserver);
1520: foreach my $mdom (@machinedoms) {
1521: my %currservers = %servers;
1522: my %server = &get_servers($mdom);
1523: %servers = (%currservers,%server);
1524: }
1525: my %by_hostname;
1526: foreach my $id (keys(%servers)) {
1527: push(@{$by_hostname{$servers{$id}}},$id);
1528: }
1529: foreach my $hostname (sort(keys(%by_hostname))) {
1530: if (@{$by_hostname{$hostname}} > 1) {
1531: my $match = 0;
1532: foreach my $id (@{$by_hostname{$hostname}}) {
1533: if (&host_domain($id) eq $dom) {
1534: $uniqservers{$id} = $hostname;
1535: $match = 1;
1536: }
1537: }
1538: unless ($match) {
1539: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1540: }
1541: } else {
1542: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1543: }
1544: }
1545: return %uniqservers;
1546: }
1547:
1548: # ---------------------- Find the homebase for a user from domain's lib servers
1549:
1550: my %homecache;
1551: sub homeserver {
1552: my ($uname,$udom,$ignoreBadCache)=@_;
1553: my $index="$uname:$udom";
1554:
1555: if (exists($homecache{$index})) { return $homecache{$index}; }
1556:
1557: my %servers = &get_servers($udom,'library');
1558: foreach my $tryserver (keys(%servers)) {
1559: next if ($ignoreBadCache ne 'true' &&
1560: exists($badServerCache{$tryserver}));
1561:
1562: my $answer=reply("home:$udom:$uname",$tryserver);
1563: if ($answer eq 'found') {
1564: delete($badServerCache{$tryserver});
1565: return $homecache{$index}=$tryserver;
1566: } elsif ($answer eq 'no_host') {
1567: $badServerCache{$tryserver}=1;
1568: }
1569: }
1570: return 'no_host';
1571: }
1572:
1573: # ------------------------------------- Find the usernames behind a list of IDs
1574:
1575: sub idget {
1576: my ($udom,@ids)=@_;
1577: my %returnhash=();
1578:
1579: my %servers = &get_servers($udom,'library');
1580: foreach my $tryserver (keys(%servers)) {
1581: my $idlist=join('&', map { &escape($_); } @ids);
1582: $idlist=~tr/A-Z/a-z/;
1583: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1584: my @answer=();
1585: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1586: @answer=split(/\&/,$reply);
1587: } ;
1588: my $i;
1589: for ($i=0;$i<=$#ids;$i++) {
1590: if ($answer[$i]) {
1591: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1592: }
1593: }
1594: }
1595: return %returnhash;
1596: }
1597:
1598: # ------------------------------------- Find the IDs behind a list of usernames
1599:
1600: sub idrget {
1601: my ($udom,@unames)=@_;
1602: my %returnhash=();
1603: foreach my $uname (@unames) {
1604: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1605: }
1606: return %returnhash;
1607: }
1608:
1609: # ------------------------------- Store away a list of names and associated IDs
1610:
1611: sub idput {
1612: my ($udom,%ids)=@_;
1613: my %servers=();
1614: foreach my $uname (keys(%ids)) {
1615: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1616: my $uhom=&homeserver($uname,$udom);
1617: if ($uhom ne 'no_host') {
1618: my $id=&escape($ids{$uname});
1619: $id=~tr/A-Z/a-z/;
1620: my $esc_unam=&escape($uname);
1621: if ($servers{$uhom}) {
1622: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1623: } else {
1624: $servers{$uhom}=$id.'='.$esc_unam;
1625: }
1626: }
1627: }
1628: foreach my $server (keys(%servers)) {
1629: &critical('idput:'.$udom.':'.$servers{$server},$server);
1630: }
1631: }
1632:
1633: # ---------------------------------------- Delete unwanted IDs from ids.db file
1634:
1635: sub iddel {
1636: my ($udom,$idshashref,$uhome)=@_;
1637: my %result=();
1638: unless (ref($idshashref) eq 'HASH') {
1639: return %result;
1640: }
1641: my %servers=();
1642: while (my ($id,$uname) = each(%{$idshashref})) {
1643: my $uhom;
1644: if ($uhome) {
1645: $uhom = $uhome;
1646: } else {
1647: $uhom=&homeserver($uname,$udom);
1648: }
1649: if ($uhom ne 'no_host') {
1650: if ($servers{$uhom}) {
1651: $servers{$uhom}.='&'.&escape($id);
1652: } else {
1653: $servers{$uhom}=&escape($id);
1654: }
1655: }
1656: }
1657: foreach my $server (keys(%servers)) {
1658: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1659: }
1660: return %result;
1661: }
1662:
1663: # ------------------------------dump from db file owned by domainconfig user
1664: sub dump_dom {
1665: my ($namespace, $udom, $regexp) = @_;
1666:
1667: $udom ||= $env{'user.domain'};
1668:
1669: return () unless $udom;
1670:
1671: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1672: }
1673:
1674: # ------------------------------------------ get items from domain db files
1675:
1676: sub get_dom {
1677: my ($namespace,$storearr,$udom,$uhome)=@_;
1678: return if ($udom eq 'public');
1679: my $items='';
1680: foreach my $item (@$storearr) {
1681: $items.=&escape($item).'&';
1682: }
1683: $items=~s/\&$//;
1684: if (!$udom) {
1685: $udom=$env{'user.domain'};
1686: return if ($udom eq 'public');
1687: if (defined(&domain($udom,'primary'))) {
1688: $uhome=&domain($udom,'primary');
1689: } else {
1690: undef($uhome);
1691: }
1692: } else {
1693: if (!$uhome) {
1694: if (defined(&domain($udom,'primary'))) {
1695: $uhome=&domain($udom,'primary');
1696: }
1697: }
1698: }
1699: if ($udom && $uhome && ($uhome ne 'no_host')) {
1700: my $rep;
1701: if ($namespace =~ /^enc/) {
1702: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
1703: } else {
1704: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1705: }
1706: my %returnhash;
1707: if ($rep eq '' || $rep =~ /^error: 2 /) {
1708: return %returnhash;
1709: }
1710: my @pairs=split(/\&/,$rep);
1711: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1712: return @pairs;
1713: }
1714: my $i=0;
1715: foreach my $item (@$storearr) {
1716: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1717: $i++;
1718: }
1719: return %returnhash;
1720: } else {
1721: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1722: }
1723: }
1724:
1725: # -------------------------------------------- put items in domain db files
1726:
1727: sub put_dom {
1728: my ($namespace,$storehash,$udom,$uhome)=@_;
1729: if (!$udom) {
1730: $udom=$env{'user.domain'};
1731: if (defined(&domain($udom,'primary'))) {
1732: $uhome=&domain($udom,'primary');
1733: } else {
1734: undef($uhome);
1735: }
1736: } else {
1737: if (!$uhome) {
1738: if (defined(&domain($udom,'primary'))) {
1739: $uhome=&domain($udom,'primary');
1740: }
1741: }
1742: }
1743: if ($udom && $uhome && ($uhome ne 'no_host')) {
1744: my $items='';
1745: foreach my $item (keys(%$storehash)) {
1746: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1747: }
1748: $items=~s/\&$//;
1749: if ($namespace =~ /^enc/) {
1750: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
1751: } else {
1752: return &reply("putdom:$udom:$namespace:$items",$uhome);
1753: }
1754: } else {
1755: &logthis("put_dom failed - no homeserver and/or domain");
1756: }
1757: }
1758:
1759: # --------------------- newput for items in db file owned by domainconfig user
1760: sub newput_dom {
1761: my ($namespace,$storehash,$udom) = @_;
1762: my $result;
1763: if (!$udom) {
1764: $udom=$env{'user.domain'};
1765: }
1766: if ($udom) {
1767: my $uname = &get_domainconfiguser($udom);
1768: $result = &newput($namespace,$storehash,$udom,$uname);
1769: }
1770: return $result;
1771: }
1772:
1773: # --------------------- delete for items in db file owned by domainconfig user
1774: sub del_dom {
1775: my ($namespace,$storearr,$udom)=@_;
1776: if (ref($storearr) eq 'ARRAY') {
1777: if (!$udom) {
1778: $udom=$env{'user.domain'};
1779: }
1780: if ($udom) {
1781: my $uname = &get_domainconfiguser($udom);
1782: return &del($namespace,$storearr,$udom,$uname);
1783: }
1784: }
1785: }
1786:
1787: # ----------------------------------construct domainconfig user for a domain
1788: sub get_domainconfiguser {
1789: my ($udom) = @_;
1790: return $udom.'-domainconfig';
1791: }
1792:
1793: sub retrieve_inst_usertypes {
1794: my ($udom) = @_;
1795: my (%returnhash,@order);
1796: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1797: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1798: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1799: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1800: } else {
1801: if (defined(&domain($udom,'primary'))) {
1802: my $uhome=&domain($udom,'primary');
1803: my $rep=&reply("inst_usertypes:$udom",$uhome);
1804: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1805: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1806: return (\%returnhash,\@order);
1807: }
1808: my ($hashitems,$orderitems) = split(/:/,$rep);
1809: my @pairs=split(/\&/,$hashitems);
1810: foreach my $item (@pairs) {
1811: my ($key,$value)=split(/=/,$item,2);
1812: $key = &unescape($key);
1813: next if ($key =~ /^error: 2 /);
1814: $returnhash{$key}=&thaw_unescape($value);
1815: }
1816: my @esc_order = split(/\&/,$orderitems);
1817: foreach my $item (@esc_order) {
1818: push(@order,&unescape($item));
1819: }
1820: } else {
1821: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1822: }
1823: return (\%returnhash,\@order);
1824: }
1825: }
1826:
1827: sub is_domainimage {
1828: my ($url) = @_;
1829: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
1830: if (&domain($1) ne '') {
1831: return '1';
1832: }
1833: }
1834: return;
1835: }
1836:
1837: sub inst_directory_query {
1838: my ($srch) = @_;
1839: my $udom = $srch->{'srchdomain'};
1840: my %results;
1841: my $homeserver = &domain($udom,'primary');
1842: my $outcome;
1843: if ($homeserver ne '') {
1844: unless ($homeserver eq $perlvar{'lonHostID'}) {
1845: if ($srch->{'srchby'} eq 'email') {
1846: my $lcrev = &get_server_loncaparev(undef,$homeserver);
1847: my ($major,$minor,$subver) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.([\w.\-]+)\'?$/);
1848: if (($major eq '' && $minor eq '') || ($major < 2) ||
1849: (($major == 2) && ($minor < 11)) ||
1850: (($major == 2) && ($minor == 11) && ($subver !~ /^2\.B/))) {
1851: return;
1852: }
1853: }
1854: }
1855: my $queryid=&reply("querysend:instdirsearch:".
1856: &escape($srch->{'srchby'}).':'.
1857: &escape($srch->{'srchterm'}).':'.
1858: &escape($srch->{'srchtype'}),$homeserver);
1859: my $host=&hostname($homeserver);
1860: if ($queryid !~/^\Q$host\E\_/) {
1861: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
1862: return;
1863: }
1864: my $response = &get_query_reply($queryid);
1865: my $maxtries = 5;
1866: my $tries = 1;
1867: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1868: $response = &get_query_reply($queryid);
1869: $tries ++;
1870: }
1871:
1872: if (!&error($response) && $response ne 'refused') {
1873: if ($response eq 'unavailable') {
1874: $outcome = $response;
1875: } else {
1876: $outcome = 'ok';
1877: my @matches = split(/\n/,$response);
1878: foreach my $match (@matches) {
1879: my ($key,$value) = split(/=/,$match);
1880: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1881: }
1882: }
1883: }
1884: }
1885: return ($outcome,%results);
1886: }
1887:
1888: sub usersearch {
1889: my ($srch) = @_;
1890: my $dom = $srch->{'srchdomain'};
1891: my %results;
1892: my %libserv = &all_library();
1893: my $query = 'usersearch';
1894: foreach my $tryserver (keys(%libserv)) {
1895: if (&host_domain($tryserver) eq $dom) {
1896: unless ($tryserver eq $perlvar{'lonHostID'}) {
1897: if ($srch->{'srchby'} eq 'email') {
1898: my $lcrev = &get_server_loncaparev(undef,$tryserver);
1899: my ($major,$minor,$subver) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.([\w.\-]+)\'?$/);
1900: next if (($major eq '' && $minor eq '') || ($major < 2) ||
1901: (($major == 2) && ($minor < 11)) ||
1902: (($major == 2) && ($minor == 11) && ($subver !~ /^2\.B/)));
1903: }
1904: }
1905: my $host=&hostname($tryserver);
1906: my $queryid=
1907: &reply("querysend:".&escape($query).':'.
1908: &escape($srch->{'srchby'}).':'.
1909: &escape($srch->{'srchtype'}).':'.
1910: &escape($srch->{'srchterm'}),$tryserver);
1911: if ($queryid !~/^\Q$host\E\_/) {
1912: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1913: next;
1914: }
1915: my $reply = &get_query_reply($queryid);
1916: my $maxtries = 1;
1917: my $tries = 1;
1918: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1919: $reply = &get_query_reply($queryid);
1920: $tries ++;
1921: }
1922: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1923: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1924: } else {
1925: my @matches;
1926: if ($reply =~ /\n/) {
1927: @matches = split(/\n/,$reply);
1928: } else {
1929: @matches = split(/\&/,$reply);
1930: }
1931: foreach my $match (@matches) {
1932: my ($uname,$udom,%userhash);
1933: foreach my $entry (split(/:/,$match)) {
1934: my ($key,$value) =
1935: map {&unescape($_);} split(/=/,$entry);
1936: $userhash{$key} = $value;
1937: if ($key eq 'username') {
1938: $uname = $value;
1939: } elsif ($key eq 'domain') {
1940: $udom = $value;
1941: }
1942: }
1943: $results{$uname.':'.$udom} = \%userhash;
1944: }
1945: }
1946: }
1947: }
1948: return %results;
1949: }
1950:
1951: sub get_instuser {
1952: my ($udom,$uname,$id) = @_;
1953: my $homeserver = &domain($udom,'primary');
1954: my ($outcome,%results);
1955: if ($homeserver ne '') {
1956: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1957: &escape($id).':'.&escape($udom),$homeserver);
1958: my $host=&hostname($homeserver);
1959: if ($queryid !~/^\Q$host\E\_/) {
1960: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1961: return;
1962: }
1963: my $response = &get_query_reply($queryid);
1964: my $maxtries = 5;
1965: my $tries = 1;
1966: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1967: $response = &get_query_reply($queryid);
1968: $tries ++;
1969: }
1970: if (!&error($response) && $response ne 'refused') {
1971: if ($response eq 'unavailable') {
1972: $outcome = $response;
1973: } else {
1974: $outcome = 'ok';
1975: my @matches = split(/\n/,$response);
1976: foreach my $match (@matches) {
1977: my ($key,$value) = split(/=/,$match);
1978: $results{&unescape($key)} = &thaw_unescape($value);
1979: }
1980: }
1981: }
1982: }
1983: my %userinfo;
1984: if (ref($results{$uname}) eq 'HASH') {
1985: %userinfo = %{$results{$uname}};
1986: }
1987: return ($outcome,%userinfo);
1988: }
1989:
1990: sub get_multiple_instusers {
1991: my ($udom,$users,$caller) = @_;
1992: my ($outcome,$results);
1993: if (ref($users) eq 'HASH') {
1994: my $count = keys(%{$users});
1995: my $requested = &freeze_escape($users);
1996: my $homeserver = &domain($udom,'primary');
1997: if ($homeserver ne '') {
1998: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
1999: my $host=&hostname($homeserver);
2000: if ($queryid !~/^\Q$host\E\_/) {
2001: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2002: ' for host: '.$homeserver.'in domain '.$udom);
2003: return ($outcome,$results);
2004: }
2005: my $response = &get_query_reply($queryid);
2006: my $maxtries = 5;
2007: if ($count > 100) {
2008: $maxtries = 1+int($count/20);
2009: }
2010: my $tries = 1;
2011: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2012: $response = &get_query_reply($queryid);
2013: $tries ++;
2014: }
2015: if ($response eq '') {
2016: $results = {};
2017: foreach my $key (keys(%{$users})) {
2018: my ($uname,$id);
2019: if ($caller eq 'id') {
2020: $id = $key;
2021: } else {
2022: $uname = $key;
2023: }
2024: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2025: $outcome = $resp;
2026: if ($resp eq 'ok') {
2027: %{$results} = (%{$results}, %info);
2028: } else {
2029: last;
2030: }
2031: }
2032: } elsif(!&error($response) && ($response ne 'refused')) {
2033: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2034: $outcome = $response;
2035: } else {
2036: ($outcome,my $userdata) = split(/=/,$response,2);
2037: if ($outcome eq 'ok') {
2038: $results = &thaw_unescape($userdata);
2039: }
2040: }
2041: }
2042: }
2043: }
2044: return ($outcome,$results);
2045: }
2046:
2047: sub inst_rulecheck {
2048: my ($udom,$uname,$id,$item,$rules) = @_;
2049: my %returnhash;
2050: if ($udom ne '') {
2051: if (ref($rules) eq 'ARRAY') {
2052: @{$rules} = map {&escape($_);} (@{$rules});
2053: my $rulestr = join(':',@{$rules});
2054: my $homeserver=&domain($udom,'primary');
2055: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2056: my $response;
2057: if ($item eq 'username') {
2058: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2059: ':'.&escape($uname).':'.$rulestr,
2060: $homeserver));
2061: } elsif ($item eq 'id') {
2062: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2063: ':'.&escape($id).':'.$rulestr,
2064: $homeserver));
2065: } elsif ($item eq 'selfcreate') {
2066: $response=&unescape(&reply('instselfcreatecheck:'.
2067: &escape($udom).':'.&escape($uname).
2068: ':'.$rulestr,$homeserver));
2069: }
2070: if ($response ne 'refused') {
2071: my @pairs=split(/\&/,$response);
2072: foreach my $item (@pairs) {
2073: my ($key,$value)=split(/=/,$item,2);
2074: $key = &unescape($key);
2075: next if ($key =~ /^error: 2 /);
2076: $returnhash{$key}=&thaw_unescape($value);
2077: }
2078: }
2079: }
2080: }
2081: }
2082: return %returnhash;
2083: }
2084:
2085: sub inst_userrules {
2086: my ($udom,$check) = @_;
2087: my (%ruleshash,@ruleorder);
2088: if ($udom ne '') {
2089: my $homeserver=&domain($udom,'primary');
2090: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2091: my $response;
2092: if ($check eq 'id') {
2093: $response=&reply('instidrules:'.&escape($udom),
2094: $homeserver);
2095: } elsif ($check eq 'email') {
2096: $response=&reply('instemailrules:'.&escape($udom),
2097: $homeserver);
2098: } else {
2099: $response=&reply('instuserrules:'.&escape($udom),
2100: $homeserver);
2101: }
2102: if (($response ne 'refused') && ($response ne 'error') &&
2103: ($response ne 'unknown_cmd') &&
2104: ($response ne 'no_such_host')) {
2105: my ($hashitems,$orderitems) = split(/:/,$response);
2106: my @pairs=split(/\&/,$hashitems);
2107: foreach my $item (@pairs) {
2108: my ($key,$value)=split(/=/,$item,2);
2109: $key = &unescape($key);
2110: next if ($key =~ /^error: 2 /);
2111: $ruleshash{$key}=&thaw_unescape($value);
2112: }
2113: my @esc_order = split(/\&/,$orderitems);
2114: foreach my $item (@esc_order) {
2115: push(@ruleorder,&unescape($item));
2116: }
2117: }
2118: }
2119: }
2120: return (\%ruleshash,\@ruleorder);
2121: }
2122:
2123: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2124:
2125: sub get_domain_defaults {
2126: my ($domain,$ignore_cache) = @_;
2127: return if (($domain eq '') || ($domain eq 'public'));
2128: my $cachetime = 60*60*24;
2129: unless ($ignore_cache) {
2130: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2131: if (defined($cached)) {
2132: if (ref($result) eq 'HASH') {
2133: return %{$result};
2134: }
2135: }
2136: }
2137: my %domdefaults;
2138: my %domconfig =
2139: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2140: 'requestcourses','inststatus',
2141: 'coursedefaults','usersessions',
2142: 'requestauthor','selfenrollment',
2143: 'coursecategories','autoenroll',
2144: 'helpsettings'],$domain);
2145: my @coursetypes = ('official','unofficial','community','textbook');
2146: if (ref($domconfig{'defaults'}) eq 'HASH') {
2147: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2148: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2149: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2150: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2151: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2152: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2153: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2154: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2155: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2156: } else {
2157: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2158: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2159: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2160: }
2161: if (ref($domconfig{'quotas'}) eq 'HASH') {
2162: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2163: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2164: } else {
2165: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2166: }
2167: my @usertools = ('aboutme','blog','webdav','portfolio');
2168: foreach my $item (@usertools) {
2169: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2170: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2171: }
2172: }
2173: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2174: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2175: }
2176: }
2177: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2178: foreach my $item ('official','unofficial','community','textbook') {
2179: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2180: }
2181: }
2182: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2183: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2184: }
2185: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2186: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2187: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2188: }
2189: }
2190: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2191: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2192: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2193: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2194: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2195: }
2196: foreach my $type (@coursetypes) {
2197: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2198: unless ($type eq 'community') {
2199: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2200: }
2201: }
2202: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2203: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2204: }
2205: if ($domdefaults{'postsubmit'} eq 'on') {
2206: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2207: $domdefaults{$type.'postsubtimeout'} =
2208: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2209: }
2210: }
2211: }
2212: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2213: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2214: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2215: if (@clonecodes) {
2216: $domdefaults{'canclone'} = join('+',@clonecodes);
2217: }
2218: }
2219: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2220: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2221: }
2222: }
2223: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2224: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2225: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2226: }
2227: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2228: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2229: }
2230: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2231: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2232: }
2233: }
2234: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2235: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2236: my @settings = ('types','registered','enroll_dates','access_dates','section',
2237: 'approval','limit');
2238: foreach my $type (@coursetypes) {
2239: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2240: my @mgrdc = ();
2241: foreach my $item (@settings) {
2242: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2243: push(@mgrdc,$item);
2244: }
2245: }
2246: if (@mgrdc) {
2247: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2248: }
2249: }
2250: }
2251: }
2252: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2253: foreach my $type (@coursetypes) {
2254: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2255: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2256: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2257: }
2258: }
2259: }
2260: }
2261: }
2262: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2263: $domdefaults{'catauth'} = 'std';
2264: $domdefaults{'catunauth'} = 'std';
2265: if ($domconfig{'coursecategories'}{'auth'}) {
2266: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2267: }
2268: if ($domconfig{'coursecategories'}{'unauth'}) {
2269: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2270: }
2271: }
2272: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2273: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2274: }
2275: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2276: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2277: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2278: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2279: }
2280: }
2281: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2282: return %domdefaults;
2283: }
2284:
2285: sub course_portal_url {
2286: my ($cnum,$cdom) = @_;
2287: my $chome = &homeserver($cnum,$cdom);
2288: my $hostname = &hostname($chome);
2289: my $protocol = $protocol{$chome};
2290: $protocol = 'http' if ($protocol ne 'https');
2291: my %domdefaults = &get_domain_defaults($cdom);
2292: my $firsturl;
2293: if ($domdefaults{'portal_def'}) {
2294: $firsturl = $domdefaults{'portal_def'};
2295: } else {
2296: $firsturl = $protocol.'://'.$hostname;
2297: }
2298: return $firsturl;
2299: }
2300:
2301: # --------------------------------------------------- Assign a key to a student
2302:
2303: sub assign_access_key {
2304: #
2305: # a valid key looks like uname:udom#comments
2306: # comments are being appended
2307: #
2308: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2309: $kdom=
2310: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2311: $knum=
2312: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2313: $cdom=
2314: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2315: $cnum=
2316: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2317: $udom=$env{'user.name'} unless (defined($udom));
2318: $uname=$env{'user.domain'} unless (defined($uname));
2319: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2320: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2321: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2322: # assigned to this person
2323: # - this should not happen,
2324: # unless something went wrong
2325: # the first time around
2326: # ready to assign
2327: $logentry=$1.'; '.$logentry;
2328: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2329: $kdom,$knum) eq 'ok') {
2330: # key now belongs to user
2331: my $envkey='key.'.$cdom.'_'.$cnum;
2332: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2333: &appenv({'environment.'.$envkey => $ckey});
2334: return 'ok';
2335: } else {
2336: return
2337: 'error: Count not permanently assign key, will need to be re-entered later.';
2338: }
2339: } else {
2340: return 'error: Could not assign key, try again later.';
2341: }
2342: } elsif (!$existing{$ckey}) {
2343: # the key does not exist
2344: return 'error: The key does not exist';
2345: } else {
2346: # the key is somebody else's
2347: return 'error: The key is already in use';
2348: }
2349: }
2350:
2351: # ------------------------------------------ put an additional comment on a key
2352:
2353: sub comment_access_key {
2354: #
2355: # a valid key looks like uname:udom#comments
2356: # comments are being appended
2357: #
2358: my ($ckey,$cdom,$cnum,$logentry)=@_;
2359: $cdom=
2360: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2361: $cnum=
2362: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2363: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2364: if ($existing{$ckey}) {
2365: $existing{$ckey}.='; '.$logentry;
2366: # ready to assign
2367: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2368: $cdom,$cnum) eq 'ok') {
2369: return 'ok';
2370: } else {
2371: return 'error: Count not store comment.';
2372: }
2373: } else {
2374: # the key does not exist
2375: return 'error: The key does not exist';
2376: }
2377: }
2378:
2379: # ------------------------------------------------------ Generate a set of keys
2380:
2381: sub generate_access_keys {
2382: my ($number,$cdom,$cnum,$logentry)=@_;
2383: $cdom=
2384: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2385: $cnum=
2386: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2387: unless (&allowed('mky',$cdom)) { return 0; }
2388: unless (($cdom) && ($cnum)) { return 0; }
2389: if ($number>10000) { return 0; }
2390: sleep(2); # make sure don't get same seed twice
2391: srand(time()^($$+($$<<15))); # from "Programming Perl"
2392: my $total=0;
2393: for (my $i=1;$i<=$number;$i++) {
2394: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2395: sprintf("%lx",int(100000*rand)).'-'.
2396: sprintf("%lx",int(100000*rand));
2397: $newkey=~s/1/g/g; # folks mix up 1 and l
2398: $newkey=~s/0/h/g; # and also 0 and O
2399: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2400: if ($existing{$newkey}) {
2401: $i--;
2402: } else {
2403: if (&put('accesskeys',
2404: { $newkey => '# generated '.localtime().
2405: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2406: '; '.$logentry },
2407: $cdom,$cnum) eq 'ok') {
2408: $total++;
2409: }
2410: }
2411: }
2412: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2413: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2414: return $total;
2415: }
2416:
2417: # ------------------------------------------------------- Validate an accesskey
2418:
2419: sub validate_access_key {
2420: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2421: $cdom=
2422: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2423: $cnum=
2424: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2425: $udom=$env{'user.domain'} unless (defined($udom));
2426: $uname=$env{'user.name'} unless (defined($uname));
2427: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2428: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2429: }
2430:
2431: # ------------------------------------- Find the section of student in a course
2432: sub devalidate_getsection_cache {
2433: my ($udom,$unam,$courseid)=@_;
2434: my $hashid="$udom:$unam:$courseid";
2435: &devalidate_cache_new('getsection',$hashid);
2436: }
2437:
2438: sub courseid_to_courseurl {
2439: my ($courseid) = @_;
2440: #already url style courseid
2441: return $courseid if ($courseid =~ m{^/});
2442:
2443: if (exists($env{'course.'.$courseid.'.num'})) {
2444: my $cnum = $env{'course.'.$courseid.'.num'};
2445: my $cdom = $env{'course.'.$courseid.'.domain'};
2446: return "/$cdom/$cnum";
2447: }
2448:
2449: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2450: if (exists($courseinfo{'num'})) {
2451: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2452: }
2453:
2454: return undef;
2455: }
2456:
2457: sub getsection {
2458: my ($udom,$unam,$courseid)=@_;
2459: my $cachetime=1800;
2460:
2461: my $hashid="$udom:$unam:$courseid";
2462: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2463: if (defined($cached)) { return $result; }
2464:
2465: my %Pending;
2466: my %Expired;
2467: #
2468: # Each role can either have not started yet (pending), be active,
2469: # or have expired.
2470: #
2471: # If there is an active role, we are done.
2472: #
2473: # If there is more than one role which has not started yet,
2474: # choose the one which will start sooner
2475: # If there is one role which has not started yet, return it.
2476: #
2477: # If there is more than one expired role, choose the one which ended last.
2478: # If there is a role which has expired, return it.
2479: #
2480: $courseid = &courseid_to_courseurl($courseid);
2481: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2482: foreach my $key (keys(%roleshash)) {
2483: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2484: my $section=$1;
2485: if ($key eq $courseid.'_st') { $section=''; }
2486: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2487: my $now=time;
2488: if (defined($end) && $end && ($now > $end)) {
2489: $Expired{$end}=$section;
2490: next;
2491: }
2492: if (defined($start) && $start && ($now < $start)) {
2493: $Pending{$start}=$section;
2494: next;
2495: }
2496: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2497: }
2498: #
2499: # Presumedly there will be few matching roles from the above
2500: # loop and the sorting time will be negligible.
2501: if (scalar(keys(%Pending))) {
2502: my ($time) = sort {$a <=> $b} keys(%Pending);
2503: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2504: }
2505: if (scalar(keys(%Expired))) {
2506: my @sorted = sort {$a <=> $b} keys(%Expired);
2507: my $time = pop(@sorted);
2508: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2509: }
2510: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2511: }
2512:
2513: sub save_cache {
2514: &purge_remembered();
2515: #&Apache::loncommon::validate_page();
2516: undef(%env);
2517: undef($env_loaded);
2518: }
2519:
2520: my $to_remember=-1;
2521: my %remembered;
2522: my %accessed;
2523: my $kicks=0;
2524: my $hits=0;
2525: sub make_key {
2526: my ($name,$id) = @_;
2527: if (length($id) > 65
2528: && length(&escape($id)) > 200) {
2529: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2530: }
2531: return &escape($name.':'.$id);
2532: }
2533:
2534: sub devalidate_cache_new {
2535: my ($name,$id,$debug) = @_;
2536: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2537: my $remembered_id=$name.':'.$id;
2538: $id=&make_key($name,$id);
2539: $memcache->delete($id);
2540: delete($remembered{$remembered_id});
2541: delete($accessed{$remembered_id});
2542: }
2543:
2544: sub is_cached_new {
2545: my ($name,$id,$debug) = @_;
2546: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) for
2547: # keys in %remembered hash, which persists for
2548: # duration of request (no restriction on key length).
2549: if (exists($remembered{$remembered_id})) {
2550: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2551: $accessed{$remembered_id}=[&gettimeofday()];
2552: $hits++;
2553: return ($remembered{$remembered_id},1);
2554: }
2555: $id=&make_key($name,$id);
2556: my $value = $memcache->get($id);
2557: if (!(defined($value))) {
2558: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2559: return (undef,undef);
2560: }
2561: if ($value eq '__undef__') {
2562: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2563: $value=undef;
2564: }
2565: &make_room($remembered_id,$value,$debug);
2566: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2567: return ($value,1);
2568: }
2569:
2570: sub do_cache_new {
2571: my ($name,$id,$value,$time,$debug) = @_;
2572: my $remembered_id=$name.':'.$id;
2573: $id=&make_key($name,$id);
2574: my $setvalue=$value;
2575: if (!defined($setvalue)) {
2576: $setvalue='__undef__';
2577: }
2578: if (!defined($time) ) {
2579: $time=600;
2580: }
2581: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2582: my $result = $memcache->set($id,$setvalue,$time);
2583: if (! $result) {
2584: &logthis("caching of id -> $id failed");
2585: $memcache->disconnect_all();
2586: }
2587: # need to make a copy of $value
2588: &make_room($remembered_id,$value,$debug);
2589: return $value;
2590: }
2591:
2592: sub make_room {
2593: my ($remembered_id,$value,$debug)=@_;
2594:
2595: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2596: : $value;
2597: if ($to_remember<0) { return; }
2598: $accessed{$remembered_id}=[&gettimeofday()];
2599: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2600: my $to_kick;
2601: my $max_time=0;
2602: foreach my $other (keys(%accessed)) {
2603: if (&tv_interval($accessed{$other}) > $max_time) {
2604: $to_kick=$other;
2605: $max_time=&tv_interval($accessed{$other});
2606: }
2607: }
2608: delete($remembered{$to_kick});
2609: delete($accessed{$to_kick});
2610: $kicks++;
2611: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2612: return;
2613: }
2614:
2615: sub purge_remembered {
2616: #&logthis("Tossing ".scalar(keys(%remembered)));
2617: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2618: undef(%remembered);
2619: undef(%accessed);
2620: }
2621: # ------------------------------------- Read an entry from a user's environment
2622:
2623: sub userenvironment {
2624: my ($udom,$unam,@what)=@_;
2625: my $items;
2626: foreach my $item (@what) {
2627: $items.=&escape($item).'&';
2628: }
2629: $items=~s/\&$//;
2630: my %returnhash=();
2631: my $uhome = &homeserver($unam,$udom);
2632: unless ($uhome eq 'no_host') {
2633: my @answer=split(/\&/,
2634: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2635: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2636: return %returnhash;
2637: }
2638: my $i;
2639: for ($i=0;$i<=$#what;$i++) {
2640: $returnhash{$what[$i]}=&unescape($answer[$i]);
2641: }
2642: }
2643: return %returnhash;
2644: }
2645:
2646: # ---------------------------------------------------------- Get a studentphoto
2647: sub studentphoto {
2648: my ($udom,$unam,$ext) = @_;
2649: my $home=&Apache::lonnet::homeserver($unam,$udom);
2650: if (defined($env{'request.course.id'})) {
2651: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2652: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2653: return(&retrievestudentphoto($udom,$unam,$ext));
2654: } else {
2655: my ($result,$perm_reqd)=
2656: &Apache::lonnet::auto_photo_permission($unam,$udom);
2657: if ($result eq 'ok') {
2658: if (!($perm_reqd eq 'yes')) {
2659: return(&retrievestudentphoto($udom,$unam,$ext));
2660: }
2661: }
2662: }
2663: }
2664: } else {
2665: my ($result,$perm_reqd) =
2666: &Apache::lonnet::auto_photo_permission($unam,$udom);
2667: if ($result eq 'ok') {
2668: if (!($perm_reqd eq 'yes')) {
2669: return(&retrievestudentphoto($udom,$unam,$ext));
2670: }
2671: }
2672: }
2673: return '/adm/lonKaputt/lonlogo_broken.gif';
2674: }
2675:
2676: sub retrievestudentphoto {
2677: my ($udom,$unam,$ext,$type) = @_;
2678: my $home=&Apache::lonnet::homeserver($unam,$udom);
2679: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2680: if ($ret eq 'ok') {
2681: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2682: if ($type eq 'thumbnail') {
2683: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2684: }
2685: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2686: return $tokenurl;
2687: } else {
2688: if ($type eq 'thumbnail') {
2689: return '/adm/lonKaputt/genericstudent_tn.gif';
2690: } else {
2691: return '/adm/lonKaputt/lonlogo_broken.gif';
2692: }
2693: }
2694: }
2695:
2696: # -------------------------------------------------------------------- New chat
2697:
2698: sub chatsend {
2699: my ($newentry,$anon,$group)=@_;
2700: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2701: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2702: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2703: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2704: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2705: &escape($newentry)).':'.$group,$chome);
2706: }
2707:
2708: # ------------------------------------------ Find current version of a resource
2709:
2710: sub getversion {
2711: my $fname=&clutter(shift);
2712: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2713: return ¤tversion(&filelocation('',$fname));
2714: }
2715:
2716: sub currentversion {
2717: my $fname=shift;
2718: my $author=$fname;
2719: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2720: my ($udom,$uname)=split(/\//,$author);
2721: my $home=&homeserver($uname,$udom);
2722: if ($home eq 'no_host') {
2723: return -1;
2724: }
2725: my $answer=&reply("currentversion:$fname",$home);
2726: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2727: return -1;
2728: }
2729: return $answer;
2730: }
2731:
2732: #
2733: # Return special version number of resource if set by override, empty otherwise
2734: #
2735: sub usedversion {
2736: my $fname=shift;
2737: unless ($fname) { $fname=$env{'request.uri'}; }
2738: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2739: if ($urlversion) { return $urlversion; }
2740: return '';
2741: }
2742:
2743: # ----------------------------- Subscribe to a resource, return URL if possible
2744:
2745: sub subscribe {
2746: my $fname=shift;
2747: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2748: $fname=~s/[\n\r]//g;
2749: my $author=$fname;
2750: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2751: my ($udom,$uname)=split(/\//,$author);
2752: my $home=homeserver($uname,$udom);
2753: if ($home eq 'no_host') {
2754: return 'not_found';
2755: }
2756: my $answer=reply("sub:$fname",$home);
2757: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2758: $answer.=' by '.$home;
2759: }
2760: return $answer;
2761: }
2762:
2763: # -------------------------------------------------------------- Replicate file
2764:
2765: sub repcopy {
2766: my $filename=shift;
2767: $filename=~s/\/+/\//g;
2768: my $londocroot = $perlvar{'lonDocRoot'};
2769: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2770: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2771: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2772: $filename=~m{^/*(uploaded|editupload)/}) {
2773: return &repcopy_userfile($filename);
2774: }
2775: $filename=~s/[\n\r]//g;
2776: my $transname="$filename.in.transfer";
2777: # FIXME: this should flock
2778: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2779: my $remoteurl=subscribe($filename);
2780: if ($remoteurl =~ /^con_lost by/) {
2781: &logthis("Subscribe returned $remoteurl: $filename");
2782: return 'unavailable';
2783: } elsif ($remoteurl eq 'not_found') {
2784: #&logthis("Subscribe returned not_found: $filename");
2785: return 'not_found';
2786: } elsif ($remoteurl =~ /^rejected by/) {
2787: &logthis("Subscribe returned $remoteurl: $filename");
2788: return 'forbidden';
2789: } elsif ($remoteurl eq 'directory') {
2790: return 'ok';
2791: } else {
2792: my $author=$filename;
2793: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2794: my ($udom,$uname)=split(/\//,$author);
2795: my $home=homeserver($uname,$udom);
2796: unless ($home eq $perlvar{'lonHostID'}) {
2797: my @parts=split(/\//,$filename);
2798: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2799: if ($path ne "$londocroot/res") {
2800: &logthis("Malconfiguration for replication: $filename");
2801: return 'bad_request';
2802: }
2803: my $count;
2804: for ($count=5;$count<$#parts;$count++) {
2805: $path.="/$parts[$count]";
2806: if ((-e $path)!=1) {
2807: mkdir($path,0777);
2808: }
2809: }
2810: my $ua=new LWP::UserAgent;
2811: my $request=new HTTP::Request('GET',"$remoteurl");
2812: my $response=$ua->request($request,$transname);
2813: if ($response->is_error()) {
2814: unlink($transname);
2815: my $message=$response->status_line;
2816: &logthis("<font color=\"blue\">WARNING:"
2817: ." LWP get: $message: $filename</font>");
2818: return 'unavailable';
2819: } else {
2820: if ($remoteurl!~/\.meta$/) {
2821: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2822: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2823: if ($mresponse->is_error()) {
2824: unlink($filename.'.meta');
2825: &logthis(
2826: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2827: }
2828: }
2829: rename($transname,$filename);
2830: return 'ok';
2831: }
2832: }
2833: }
2834: }
2835:
2836: # ------------------------------------------------ Get server side include body
2837: sub ssi_body {
2838: my ($filelink,%form)=@_;
2839: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2840: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2841: }
2842: my $output='';
2843: my $response;
2844: if ($filelink=~/^https?\:/) {
2845: ($output,$response)=&externalssi($filelink);
2846: } else {
2847: $filelink .= $filelink=~/\?/ ? '&' : '?';
2848: $filelink .= 'inhibitmenu=yes';
2849: ($output,$response)=&ssi($filelink,%form);
2850: }
2851: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2852: $output=~s/^.*?\<body[^\>]*\>//si;
2853: $output=~s/\<\/body\s*\>.*?$//si;
2854: if (wantarray) {
2855: return ($output, $response);
2856: } else {
2857: return $output;
2858: }
2859: }
2860:
2861: # --------------------------------------------------------- Server Side Include
2862:
2863: sub absolute_url {
2864: my ($host_name) = @_;
2865: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2866: if ($host_name eq '') {
2867: $host_name = $ENV{'SERVER_NAME'};
2868: }
2869: return $protocol.$host_name;
2870: }
2871:
2872: #
2873: # Server side include.
2874: # Parameters:
2875: # fn Possibly encrypted resource name/id.
2876: # form Hash that describes how the rendering should be done
2877: # and other things.
2878: # Returns:
2879: # Scalar context: The content of the response.
2880: # Array context: 2 element list of the content and the full response object.
2881: #
2882: sub ssi {
2883:
2884: my ($fn,%form)=@_;
2885: my $ua=new LWP::UserAgent;
2886: my $request;
2887:
2888: $form{'no_update_last_known'}=1;
2889: &Apache::lonenc::check_encrypt(\$fn);
2890: if (%form) {
2891: $request=new HTTP::Request('POST',&absolute_url().$fn);
2892: $request->content(join('&',map {
2893: my $name = escape($_);
2894: "$name=" . ( ref($form{$_}) eq 'ARRAY'
2895: ? join("&$name=", map {escape($_) } @{$form{$_}})
2896: : &escape($form{$_}) );
2897: } keys(%form)));
2898: } else {
2899: $request=new HTTP::Request('GET',&absolute_url().$fn);
2900: }
2901:
2902: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2903: my $response= $ua->request($request);
2904: if (wantarray) {
2905: return ($response->content, $response);
2906: } else {
2907: return $response->content;
2908: }
2909: }
2910:
2911: sub externalssi {
2912: my ($url)=@_;
2913: my $ua=new LWP::UserAgent;
2914: my $request=new HTTP::Request('GET',$url);
2915: my $response=$ua->request($request);
2916: if (wantarray) {
2917: return ($response->content, $response);
2918: } else {
2919: return $response->content;
2920: }
2921: }
2922:
2923: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2924:
2925: sub allowuploaded {
2926: my ($srcurl,$url)=@_;
2927: $url=&clutter(&declutter($url));
2928: my $dir=$url;
2929: $dir=~s/\/[^\/]+$//;
2930: my %httpref=();
2931: my $httpurl=&hreflocation('',$url);
2932: $httpref{'httpref.'.$httpurl}=$srcurl;
2933: &Apache::lonnet::appenv(\%httpref);
2934: }
2935:
2936: #
2937: # Determine if the current user should be able to edit a particular resource,
2938: # when viewing in course context.
2939: # (a) When viewing resource used to determine if "Edit" item is included in
2940: # Functions.
2941: # (b) When displaying folder contents in course editor, used to determine if
2942: # "Edit" link will be displayed alongside resource.
2943: #
2944: # input: six args -- filename (decluttered), course number, course domain,
2945: # url, symb (if registered) and group (if this is a group
2946: # item -- e.g., bulletin board, group page etc.).
2947: # output: array of five scalars --
2948: # $cfile -- url for file editing if editable on current server
2949: # $home -- homeserver of resource (i.e., for author if published,
2950: # or course if uploaded.).
2951: # $switchserver -- 1 if server switch will be needed.
2952: # $forceedit -- 1 if icon/link should be to go to edit mode
2953: # $forceview -- 1 if icon/link should be to go to view mode
2954: #
2955:
2956: sub can_edit_resource {
2957: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2958: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2959: #
2960: # For aboutme pages user can only edit his/her own.
2961: #
2962: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2963: my ($sdom,$sname) = ($1,$2);
2964: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2965: $home = $env{'user.home'};
2966: $cfile = $resurl;
2967: if ($env{'form.forceedit'}) {
2968: $forceview = 1;
2969: } else {
2970: $forceedit = 1;
2971: }
2972: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2973: } else {
2974: return;
2975: }
2976: }
2977:
2978: if ($env{'request.course.id'}) {
2979: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2980: if ($group ne '') {
2981: # if this is a group homepage or group bulletin board, check group privs
2982: my $allowed = 0;
2983: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2984: if ((&allowed('mdg',$env{'request.course.id'}.
2985: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2986: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2987: $allowed = 1;
2988: }
2989: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2990: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2991: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2992: $allowed = 1;
2993: }
2994: }
2995: if ($allowed) {
2996: $home=&homeserver($cnum,$cdom);
2997: if ($env{'form.forceedit'}) {
2998: $forceview = 1;
2999: } else {
3000: $forceedit = 1;
3001: }
3002: $cfile = $resurl;
3003: } else {
3004: return;
3005: }
3006: } else {
3007: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3008: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3009: return;
3010: }
3011: } elsif (!$crsedit) {
3012: #
3013: # No edit allowed where CC has switched to student role.
3014: #
3015: return;
3016: }
3017: }
3018: }
3019:
3020: if ($file ne '') {
3021: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3022: if (&is_course_upload($file,$cnum,$cdom)) {
3023: $uploaded = 1;
3024: $incourse = 1;
3025: if ($file =~/\.(htm|html|css|js|txt)$/) {
3026: $cfile = &hreflocation('',$file);
3027: if ($env{'form.forceedit'}) {
3028: $forceview = 1;
3029: } else {
3030: $forceedit = 1;
3031: }
3032: }
3033: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3034: $incourse = 1;
3035: if ($env{'form.forceedit'}) {
3036: $forceview = 1;
3037: } else {
3038: $forceedit = 1;
3039: }
3040: $cfile = $resurl;
3041: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3042: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3043: $incourse = 1;
3044: if ($env{'form.forceedit'}) {
3045: $forceview = 1;
3046: } else {
3047: $forceedit = 1;
3048: }
3049: $cfile = $resurl;
3050: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3051: $incourse = 1;
3052: $cfile = $resurl.'/smpedit';
3053: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3054: $incourse = 1;
3055: if ($env{'form.forceedit'}) {
3056: $forceview = 1;
3057: } else {
3058: $forceedit = 1;
3059: }
3060: $cfile = $resurl;
3061: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3062: $incourse = 1;
3063: if ($env{'form.forceedit'}) {
3064: $forceview = 1;
3065: } else {
3066: $forceedit = 1;
3067: }
3068: $cfile = $resurl;
3069: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3070: $incourse = 1;
3071: if ($env{'form.forceedit'}) {
3072: $forceview = 1;
3073: } else {
3074: $forceedit = 1;
3075: }
3076: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3077: }
3078: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3079: my $template = '/res/lib/templates/simpleproblem.problem';
3080: if (&is_on_map($template)) {
3081: $incourse = 1;
3082: $forceview = 1;
3083: $cfile = $template;
3084: }
3085: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3086: $incourse = 1;
3087: if ($env{'form.forceedit'}) {
3088: $forceview = 1;
3089: } else {
3090: $forceedit = 1;
3091: }
3092: $cfile = $resurl;
3093: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3094: $incourse = 1;
3095: if ($env{'form.forceedit'}) {
3096: $forceview = 1;
3097: } else {
3098: $forceedit = 1;
3099: }
3100: $cfile = $resurl;
3101: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3102: $incourse = 1;
3103: $forceview = 1;
3104: if ($symb) {
3105: my ($map,$id,$res)=&decode_symb($symb);
3106: $env{'request.symb'} = $symb;
3107: $cfile = &clutter($res);
3108: } else {
3109: $cfile = $env{'form.suppurl'};
3110: my $escfile = &unescape($cfile);
3111: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3112: $cfile = '/adm/wrapper'.$escfile;
3113: } else {
3114: $escfile =~ s{^http://}{};
3115: $cfile = &escape("/adm/wrapper/ext/$escfile");
3116: }
3117: }
3118: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3119: if ($env{'form.forceedit'}) {
3120: $forceview = 1;
3121: } else {
3122: $forceedit = 1;
3123: }
3124: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3125: }
3126: }
3127: if ($uploaded || $incourse) {
3128: $home=&homeserver($cnum,$cdom);
3129: } elsif ($file !~ m{/$}) {
3130: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3131: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3132: # Check that the user has permission to edit this resource
3133: my $setpriv = 1;
3134: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3135: if (defined($cfudom)) {
3136: $home=&homeserver($cfuname,$cfudom);
3137: $cfile=$file;
3138: }
3139: }
3140: if (($cfile ne '') && (!$incourse || $uploaded) &&
3141: (($home ne '') && ($home ne 'no_host'))) {
3142: my @ids=¤t_machine_ids();
3143: unless (grep(/^\Q$home\E$/,@ids)) {
3144: $switchserver=1;
3145: }
3146: }
3147: }
3148: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3149: }
3150:
3151: sub is_course_upload {
3152: my ($file,$cnum,$cdom) = @_;
3153: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3154: $uploadpath =~ s{^\/}{};
3155: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3156: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3157: return 1;
3158: }
3159: return;
3160: }
3161:
3162: sub in_course {
3163: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3164: if ($hideprivileged) {
3165: my $skipuser;
3166: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3167: my @possdoms = ($cdom);
3168: if ($coursehash{'checkforpriv'}) {
3169: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3170: }
3171: if (&privileged($uname,$udom,\@possdoms)) {
3172: $skipuser = 1;
3173: if ($coursehash{'nothideprivileged'}) {
3174: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3175: my $user;
3176: if ($item =~ /:/) {
3177: $user = $item;
3178: } else {
3179: $user = join(':',split(/[\@]/,$item));
3180: }
3181: if ($user eq $uname.':'.$udom) {
3182: undef($skipuser);
3183: last;
3184: }
3185: }
3186: }
3187: if ($skipuser) {
3188: return 0;
3189: }
3190: }
3191: }
3192: $type ||= 'any';
3193: if (!defined($cdom) || !defined($cnum)) {
3194: my $cid = $env{'request.course.id'};
3195: $cdom = $env{'course.'.$cid.'.domain'};
3196: $cnum = $env{'course.'.$cid.'.num'};
3197: }
3198: my $typesref;
3199: if (($type eq 'any') || ($type eq 'all')) {
3200: $typesref = ['active','previous','future'];
3201: } elsif ($type eq 'previous' || $type eq 'future') {
3202: $typesref = [$type];
3203: }
3204: my %roles = &get_my_roles($uname,$udom,'userroles',
3205: $typesref,undef,[$cdom]);
3206: my ($tmp) = keys(%roles);
3207: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3208: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3209: if (@course_roles > 0) {
3210: return 1;
3211: }
3212: return 0;
3213: }
3214:
3215: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3216: # input: action, courseID, current domain, intended
3217: # path to file, source of file, instruction to parse file for objects,
3218: # ref to hash for embedded objects,
3219: # ref to hash for codebase of java objects.
3220: # reference to scalar to accommodate mime type determined
3221: # from File::MMagic if $parser = parse.
3222: #
3223: # output: url to file (if action was uploaddoc),
3224: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3225: #
3226: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3227: # course.
3228: #
3229: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3230: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3231: # course's home server.
3232: #
3233: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3234: # be copied from $source (current location) to
3235: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3236: # and will then be copied to
3237: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3238: # course's home server.
3239: #
3240: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3241: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3242: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3243: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3244: # in course's home server.
3245: #
3246:
3247: sub process_coursefile {
3248: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3249: $mimetype)=@_;
3250: my $fetchresult;
3251: my $home=&homeserver($docuname,$docudom);
3252: if ($action eq 'propagate') {
3253: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3254: $home);
3255: } else {
3256: my $fpath = '';
3257: my $fname = $file;
3258: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3259: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3260: my $filepath = &build_filepath($fpath);
3261: if ($action eq 'copy') {
3262: if ($source eq '') {
3263: $fetchresult = 'no source file';
3264: return $fetchresult;
3265: } else {
3266: my $destination = $filepath.'/'.$fname;
3267: rename($source,$destination);
3268: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3269: $home);
3270: }
3271: } elsif ($action eq 'uploaddoc') {
3272: open(my $fh,'>',$filepath.'/'.$fname);
3273: print $fh $env{'form.'.$source};
3274: close($fh);
3275: if ($parser eq 'parse') {
3276: my $mm = new File::MMagic;
3277: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3278: if ($type eq 'text/html') {
3279: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3280: unless ($parse_result eq 'ok') {
3281: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3282: }
3283: }
3284: if (ref($mimetype)) {
3285: $$mimetype = $type;
3286: }
3287: }
3288: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3289: $home);
3290: if ($fetchresult eq 'ok') {
3291: return '/uploaded/'.$fpath.'/'.$fname;
3292: } else {
3293: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3294: ' to host '.$home.': '.$fetchresult);
3295: return '/adm/notfound.html';
3296: }
3297: }
3298: }
3299: unless ( $fetchresult eq 'ok') {
3300: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3301: ' to host '.$home.': '.$fetchresult);
3302: }
3303: return $fetchresult;
3304: }
3305:
3306: sub build_filepath {
3307: my ($fpath) = @_;
3308: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3309: unless ($fpath eq '') {
3310: my @parts=split('/',$fpath);
3311: foreach my $part (@parts) {
3312: $filepath.= '/'.$part;
3313: if ((-e $filepath)!=1) {
3314: mkdir($filepath,0777);
3315: }
3316: }
3317: }
3318: return $filepath;
3319: }
3320:
3321: sub store_edited_file {
3322: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3323: my $file = $primary_url;
3324: $file =~ s#^/uploaded/$docudom/$docuname/##;
3325: my $fpath = '';
3326: my $fname = $file;
3327: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3328: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3329: my $filepath = &build_filepath($fpath);
3330: open(my $fh,'>',$filepath.'/'.$fname);
3331: print $fh $content;
3332: close($fh);
3333: my $home=&homeserver($docuname,$docudom);
3334: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3335: $home);
3336: if ($$fetchresult eq 'ok') {
3337: return '/uploaded/'.$fpath.'/'.$fname;
3338: } else {
3339: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3340: ' to host '.$home.': '.$$fetchresult);
3341: return '/adm/notfound.html';
3342: }
3343: }
3344:
3345: sub clean_filename {
3346: my ($fname,$args)=@_;
3347: # Replace Windows backslashes by forward slashes
3348: $fname=~s/\\/\//g;
3349: if (!$args->{'keep_path'}) {
3350: # Get rid of everything but the actual filename
3351: $fname=~s/^.*\/([^\/]+)$/$1/;
3352: }
3353: # Replace spaces by underscores
3354: $fname=~s/\s+/\_/g;
3355: # Replace all other weird characters by nothing
3356: $fname=~s{[^/\w\.\-]}{}g;
3357: # Replace all .\d. sequences with _\d. so they no longer look like version
3358: # numbers
3359: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3360: return $fname;
3361: }
3362: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3363: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3364: # image with the same aspect ratio as the original, but with dimensions which do
3365: # not exceed $resizewidth and $resizeheight.
3366:
3367: sub resizeImage {
3368: my ($img_path,$resizewidth,$resizeheight) = @_;
3369: my $ima = Image::Magick->new;
3370: my $resized;
3371: if (-e $img_path) {
3372: $ima->Read($img_path);
3373: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3374: my $width = $ima->Get('width');
3375: my $height = $ima->Get('height');
3376: if ($width > $resizewidth) {
3377: my $factor = $width/$resizewidth;
3378: my $newheight = $height/$factor;
3379: $ima->Scale(width=>$resizewidth,height=>$newheight);
3380: $resized = 1;
3381: }
3382: }
3383: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3384: my $width = $ima->Get('width');
3385: my $height = $ima->Get('height');
3386: if ($height > $resizeheight) {
3387: my $factor = $height/$resizeheight;
3388: my $newwidth = $width/$factor;
3389: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3390: $resized = 1;
3391: }
3392: }
3393: if ($resized) {
3394: $ima->Write($img_path);
3395: }
3396: }
3397: return;
3398: }
3399:
3400: # --------------- Take an uploaded file and put it into the userfiles directory
3401: # input: $formname - the contents of the file are in $env{"form.$formname"}
3402: # the desired filename is in $env{"form.$formname.filename"}
3403: # $context - possible values: coursedoc, existingfile, overwrite,
3404: # canceloverwrite, or ''.
3405: # if 'coursedoc': upload to the current course
3406: # if 'existingfile': write file to tmp/overwrites directory
3407: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3408: # $context is passed as argument to &finishuserfileupload
3409: # $subdir - directory in userfile to store the file into
3410: # $parser - instruction to parse file for objects ($parser = parse)
3411: # $allfiles - reference to hash for embedded objects
3412: # $codebase - reference to hash for codebase of java objects
3413: # $desuname - username for permanent storage of uploaded file
3414: # $dsetudom - domain for permanaent storage of uploaded file
3415: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3416: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3417: # $resizewidth - width (pixels) to which to resize uploaded image
3418: # $resizeheight - height (pixels) to which to resize uploaded image
3419: # $mimetype - reference to scalar to accommodate mime type determined
3420: # from File::MMagic.
3421: #
3422: # output: url of file in userspace, or error: <message>
3423: # or /adm/notfound.html if failure to upload occurse
3424:
3425: sub userfileupload {
3426: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3427: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3428: if (!defined($subdir)) { $subdir='unknown'; }
3429: my $fname=$env{'form.'.$formname.'.filename'};
3430: $fname=&clean_filename($fname);
3431: # See if there is anything left
3432: unless ($fname) { return 'error: no uploaded file'; }
3433: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3434: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3435: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3436: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3437: my $now = time;
3438: my $filepath;
3439: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3440: $filepath = 'tmp/helprequests/'.$now;
3441: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3442: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3443: '_'.$env{'user.domain'}.'/pending';
3444: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3445: my ($docuname,$docudom);
3446: if ($destudom =~ /^$match_domain$/) {
3447: $docudom = $destudom;
3448: } else {
3449: $docudom = $env{'user.domain'};
3450: }
3451: if ($destuname =~ /^$match_username$/) {
3452: $docuname = $destuname;
3453: } else {
3454: $docuname = $env{'user.name'};
3455: }
3456: if (exists($env{'form.group'})) {
3457: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3458: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3459: }
3460: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3461: if ($context eq 'canceloverwrite') {
3462: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3463: if (-e $tempfile) {
3464: my @info = stat($tempfile);
3465: if ($info[9] eq $env{'form.timestamp'}) {
3466: unlink($tempfile);
3467: }
3468: }
3469: return;
3470: }
3471: }
3472: # Create the directory if not present
3473: my @parts=split(/\//,$filepath);
3474: my $fullpath = $perlvar{'lonDaemons'};
3475: for (my $i=0;$i<@parts;$i++) {
3476: $fullpath .= '/'.$parts[$i];
3477: if ((-e $fullpath)!=1) {
3478: mkdir($fullpath,0777);
3479: }
3480: }
3481: open(my $fh,'>',$fullpath.'/'.$fname);
3482: print $fh $env{'form.'.$formname};
3483: close($fh);
3484: if ($context eq 'existingfile') {
3485: my @info = stat($fullpath.'/'.$fname);
3486: return ($fullpath.'/'.$fname,$info[9]);
3487: } else {
3488: return $fullpath.'/'.$fname;
3489: }
3490: }
3491: if ($subdir eq 'scantron') {
3492: $fname = 'scantron_orig_'.$fname;
3493: } else {
3494: $fname="$subdir/$fname";
3495: }
3496: if ($context eq 'coursedoc') {
3497: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3498: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3499: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3500: return &finishuserfileupload($docuname,$docudom,
3501: $formname,$fname,$parser,$allfiles,
3502: $codebase,$thumbwidth,$thumbheight,
3503: $resizewidth,$resizeheight,$context,$mimetype);
3504: } else {
3505: if ($env{'form.folder'}) {
3506: $fname=$env{'form.folder'}.'/'.$fname;
3507: }
3508: return &process_coursefile('uploaddoc',$docuname,$docudom,
3509: $fname,$formname,$parser,
3510: $allfiles,$codebase,$mimetype);
3511: }
3512: } elsif (defined($destuname)) {
3513: my $docuname=$destuname;
3514: my $docudom=$destudom;
3515: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3516: $parser,$allfiles,$codebase,
3517: $thumbwidth,$thumbheight,
3518: $resizewidth,$resizeheight,$context,$mimetype);
3519: } else {
3520: my $docuname=$env{'user.name'};
3521: my $docudom=$env{'user.domain'};
3522: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3523: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3524: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3525: }
3526: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3527: $parser,$allfiles,$codebase,
3528: $thumbwidth,$thumbheight,
3529: $resizewidth,$resizeheight,$context,$mimetype);
3530: }
3531: }
3532:
3533: sub finishuserfileupload {
3534: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3535: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3536: my $path=$docudom.'/'.$docuname.'/';
3537: my $filepath=$perlvar{'lonDocRoot'};
3538:
3539: my ($fnamepath,$file,$fetchthumb);
3540: $file=$fname;
3541: if ($fname=~m|/|) {
3542: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3543: $path.=$fnamepath.'/';
3544: }
3545: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3546: my $count;
3547: for ($count=4;$count<=$#parts;$count++) {
3548: $filepath.="/$parts[$count]";
3549: if ((-e $filepath)!=1) {
3550: mkdir($filepath,0777);
3551: }
3552: }
3553:
3554: # Save the file
3555: {
3556: if (!open(FH,'>',$filepath.'/'.$file)) {
3557: &logthis('Failed to create '.$filepath.'/'.$file);
3558: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3559: return '/adm/notfound.html';
3560: }
3561: if ($context eq 'overwrite') {
3562: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3563: my $target = $filepath.'/'.$file;
3564: if (-e $source) {
3565: my @info = stat($source);
3566: if ($info[9] eq $env{'form.timestamp'}) {
3567: unless (&File::Copy::move($source,$target)) {
3568: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3569: return "Moving from $source failed";
3570: }
3571: } else {
3572: return "Temporary file: $source had unexpected date/time for last modification";
3573: }
3574: } else {
3575: return "Temporary file: $source missing";
3576: }
3577: } elsif (!print FH ($env{'form.'.$formname})) {
3578: &logthis('Failed to write to '.$filepath.'/'.$file);
3579: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3580: return '/adm/notfound.html';
3581: }
3582: close(FH);
3583: if ($resizewidth && $resizeheight) {
3584: my $mm = new File::MMagic;
3585: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3586: if ($mime_type =~ m{^image/}) {
3587: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3588: }
3589: }
3590: }
3591: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3592: if (ref($mimetype)) {
3593: if ($$mimetype eq '') {
3594: my $mm = new File::MMagic;
3595: my $type = $mm->checktype_filename($filepath.'/'.$file);
3596: $$mimetype = $type;
3597: }
3598: }
3599: }
3600: if ($parser eq 'parse') {
3601: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3602: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3603: $allfiles,$codebase);
3604: unless ($parse_result eq 'ok') {
3605: &logthis('Failed to parse '.$filepath.$file.
3606: ' for embedded media: '.$parse_result);
3607: }
3608: }
3609: }
3610: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3611: my $input = $filepath.'/'.$file;
3612: my $output = $filepath.'/'.'tn-'.$file;
3613: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3614: my @args = ('convert','-sample',$thumbsize,$input,$output);
3615: system({$args[0]} @args);
3616: if (-e $filepath.'/'.'tn-'.$file) {
3617: $fetchthumb = 1;
3618: }
3619: }
3620:
3621: # Notify homeserver to grep it
3622: #
3623: my $docuhome=&homeserver($docuname,$docudom);
3624: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3625: if ($fetchresult eq 'ok') {
3626: if ($fetchthumb) {
3627: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3628: if ($thumbresult ne 'ok') {
3629: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3630: $docuhome.': '.$thumbresult);
3631: }
3632: }
3633: #
3634: # Return the URL to it
3635: return '/uploaded/'.$path.$file;
3636: } else {
3637: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3638: ': '.$fetchresult);
3639: return '/adm/notfound.html';
3640: }
3641: }
3642:
3643: sub extract_embedded_items {
3644: my ($fullpath,$allfiles,$codebase,$content) = @_;
3645: my @state = ();
3646: my (%lastids,%related,%shockwave,%flashvars);
3647: my %javafiles = (
3648: codebase => '',
3649: code => '',
3650: archive => ''
3651: );
3652: my %mediafiles = (
3653: src => '',
3654: movie => '',
3655: );
3656: my $p;
3657: if ($content) {
3658: $p = HTML::LCParser->new($content);
3659: } else {
3660: $p = HTML::LCParser->new($fullpath);
3661: }
3662: while (my $t=$p->get_token()) {
3663: if ($t->[0] eq 'S') {
3664: my ($tagname, $attr) = ($t->[1],$t->[2]);
3665: push(@state, $tagname);
3666: if (lc($tagname) eq 'allow') {
3667: &add_filetype($allfiles,$attr->{'src'},'src');
3668: }
3669: if (lc($tagname) eq 'img') {
3670: &add_filetype($allfiles,$attr->{'src'},'src');
3671: }
3672: if (lc($tagname) eq 'a') {
3673: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3674: &add_filetype($allfiles,$attr->{'href'},'href');
3675: }
3676: }
3677: if (lc($tagname) eq 'script') {
3678: my $src;
3679: if ($attr->{'archive'} =~ /\.jar$/i) {
3680: &add_filetype($allfiles,$attr->{'archive'},'archive');
3681: } else {
3682: if ($attr->{'src'} ne '') {
3683: $src = $attr->{'src'};
3684: &add_filetype($allfiles,$src,'src');
3685: }
3686: }
3687: my $text = $p->get_trimmed_text();
3688: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3689: my @swfargs = split(/,/,$1);
3690: foreach my $item (@swfargs) {
3691: $item =~ s/["']//g;
3692: $item =~ s/^\s+//;
3693: $item =~ s/\s+$//;
3694: }
3695: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3696: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3697: push(@{$related{$swfargs[0]}},$swfargs[2]);
3698: } else {
3699: $related{$swfargs[0]} = [$swfargs[2]];
3700: }
3701: }
3702: }
3703: }
3704: if (lc($tagname) eq 'link') {
3705: if (lc($attr->{'rel'}) eq 'stylesheet') {
3706: &add_filetype($allfiles,$attr->{'href'},'href');
3707: }
3708: }
3709: if (lc($tagname) eq 'object' ||
3710: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3711: foreach my $item (keys(%javafiles)) {
3712: $javafiles{$item} = '';
3713: }
3714: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3715: $lastids{lc($tagname)} = $attr->{'id'};
3716: }
3717: }
3718: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3719: my $name = lc($attr->{'name'});
3720: foreach my $item (keys(%javafiles)) {
3721: if ($name eq $item) {
3722: $javafiles{$item} = $attr->{'value'};
3723: last;
3724: }
3725: }
3726: my $pathfrom;
3727: foreach my $item (keys(%mediafiles)) {
3728: if ($name eq $item) {
3729: $pathfrom = $attr->{'value'};
3730: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3731: &add_filetype($allfiles,$pathfrom,$name);
3732: last;
3733: }
3734: }
3735: if ($name eq 'flashvars') {
3736: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3737: }
3738: if ($pathfrom ne '') {
3739: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3740: $pathfrom);
3741: }
3742: }
3743: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3744: foreach my $item (keys(%javafiles)) {
3745: if ($attr->{$item}) {
3746: $javafiles{$item} = $attr->{$item};
3747: last;
3748: }
3749: }
3750: foreach my $item (keys(%mediafiles)) {
3751: if ($attr->{$item}) {
3752: &add_filetype($allfiles,$attr->{$item},$item);
3753: last;
3754: }
3755: }
3756: if (lc($tagname) eq 'embed') {
3757: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3758: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3759: $attr->{'src'});
3760: }
3761: }
3762: }
3763: if (lc($tagname) eq 'iframe') {
3764: my $src = $attr->{'src'} ;
3765: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3766: &add_filetype($allfiles,$src,'src');
3767: } elsif ($src =~ m{^/}) {
3768: if ($env{'request.course.id'}) {
3769: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3770: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3771: my $url = &hreflocation('',$fullpath);
3772: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3773: my $relpath = $1;
3774: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3775: &add_filetype($allfiles,$1,'src');
3776: }
3777: }
3778: }
3779: }
3780: }
3781: if ($t->[4] =~ m{/>$}) {
3782: pop(@state);
3783: }
3784: } elsif ($t->[0] eq 'E') {
3785: my ($tagname) = ($t->[1]);
3786: if ($javafiles{'codebase'} ne '') {
3787: $javafiles{'codebase'} .= '/';
3788: }
3789: if (lc($tagname) eq 'applet' ||
3790: lc($tagname) eq 'object' ||
3791: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3792: ) {
3793: foreach my $item (keys(%javafiles)) {
3794: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3795: my $file=$javafiles{'codebase'}.$javafiles{$item};
3796: &add_filetype($allfiles,$file,$item);
3797: }
3798: }
3799: }
3800: pop @state;
3801: }
3802: }
3803: foreach my $id (sort(keys(%flashvars))) {
3804: if ($shockwave{$id} ne '') {
3805: my @pairs = split(/\&/,$flashvars{$id});
3806: foreach my $pair (@pairs) {
3807: my ($key,$value) = split(/\=/,$pair);
3808: if ($key eq 'thumb') {
3809: &add_filetype($allfiles,$value,$key);
3810: } elsif ($key eq 'content') {
3811: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3812: my ($ext) = ($value =~ /\.([^.]+)$/);
3813: if ($ext ne '') {
3814: &add_filetype($allfiles,$path.$value,$ext);
3815: }
3816: }
3817: }
3818: }
3819: }
3820: return 'ok';
3821: }
3822:
3823: sub add_filetype {
3824: my ($allfiles,$file,$type)=@_;
3825: if (exists($allfiles->{$file})) {
3826: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3827: push(@{$allfiles->{$file}}, &escape($type));
3828: }
3829: } else {
3830: @{$allfiles->{$file}} = (&escape($type));
3831: }
3832: }
3833:
3834: sub embedded_dependency {
3835: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3836: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3837: if (($identifier ne '') &&
3838: (ref($related->{$identifier}) eq 'ARRAY') &&
3839: ($pathfrom ne '')) {
3840: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3841: foreach my $dep (@{$related->{$identifier}}) {
3842: &add_filetype($allfiles,$path.$dep,'object');
3843: }
3844: }
3845: }
3846: return;
3847: }
3848:
3849: sub removeuploadedurl {
3850: my ($url)=@_;
3851: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3852: return &removeuserfile($uname,$udom,$fname);
3853: }
3854:
3855: sub removeuserfile {
3856: my ($docuname,$docudom,$fname)=@_;
3857: my $home=&homeserver($docuname,$docudom);
3858: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3859: if ($result eq 'ok') {
3860: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3861: my $metafile = $fname.'.meta';
3862: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3863: my $url = "/uploaded/$docudom/$docuname/$fname";
3864: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3865: my $sqlresult =
3866: &update_portfolio_table($docuname,$docudom,$file,
3867: 'portfolio_metadata',$group,
3868: 'delete');
3869: }
3870: }
3871: return $result;
3872: }
3873:
3874: sub mkdiruserfile {
3875: my ($docuname,$docudom,$dir)=@_;
3876: my $home=&homeserver($docuname,$docudom);
3877: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3878: }
3879:
3880: sub renameuserfile {
3881: my ($docuname,$docudom,$old,$new)=@_;
3882: my $home=&homeserver($docuname,$docudom);
3883: my $result = &reply("renameuserfile:$docudom:$docuname:".
3884: &escape("$old").':'.&escape("$new"),$home);
3885: if ($result eq 'ok') {
3886: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3887: my $oldmeta = $old.'.meta';
3888: my $newmeta = $new.'.meta';
3889: my $metaresult =
3890: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3891: my $url = "/uploaded/$docudom/$docuname/$old";
3892: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3893: my $sqlresult =
3894: &update_portfolio_table($docuname,$docudom,$file,
3895: 'portfolio_metadata',$group,
3896: 'delete');
3897: }
3898: }
3899: return $result;
3900: }
3901:
3902: # ------------------------------------------------------------------------- Log
3903:
3904: sub log {
3905: my ($dom,$nam,$hom,$what)=@_;
3906: return critical("log:$dom:$nam:$what",$hom);
3907: }
3908:
3909: # ------------------------------------------------------------------ Course Log
3910: #
3911: # This routine flushes several buffers of non-mission-critical nature
3912: #
3913:
3914: sub flushcourselogs {
3915: &logthis('Flushing log buffers');
3916: #
3917: # course logs
3918: # This is a log of all transactions in a course, which can be used
3919: # for data mining purposes
3920: #
3921: # It also collects the courseid database, which lists last transaction
3922: # times and course titles for all courseids
3923: #
3924: my %courseidbuffer=();
3925: foreach my $crsid (keys(%courselogs)) {
3926: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3927: &escape($courselogs{$crsid}),
3928: $coursehombuf{$crsid}) eq 'ok') {
3929: delete $courselogs{$crsid};
3930: } else {
3931: &logthis('Failed to flush log buffer for '.$crsid);
3932: if (length($courselogs{$crsid})>40000) {
3933: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3934: " exceeded maximum size, deleting.</font>");
3935: delete $courselogs{$crsid};
3936: }
3937: }
3938: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3939: 'description' => $coursedescrbuf{$crsid},
3940: 'inst_code' => $courseinstcodebuf{$crsid},
3941: 'type' => $coursetypebuf{$crsid},
3942: 'owner' => $courseownerbuf{$crsid},
3943: };
3944: }
3945: #
3946: # Write course id database (reverse lookup) to homeserver of courses
3947: # Is used in pickcourse
3948: #
3949: foreach my $crs_home (keys(%courseidbuffer)) {
3950: my $response = &courseidput(&host_domain($crs_home),
3951: $courseidbuffer{$crs_home},
3952: $crs_home,'timeonly');
3953: }
3954: #
3955: # File accesses
3956: # Writes to the dynamic metadata of resources to get hit counts, etc.
3957: #
3958: foreach my $entry (keys(%accesshash)) {
3959: if ($entry =~ /___count$/) {
3960: my ($dom,$name);
3961: ($dom,$name,undef)=
3962: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3963: if (! defined($dom) || $dom eq '' ||
3964: ! defined($name) || $name eq '') {
3965: my $cid = $env{'request.course.id'};
3966: $dom = $env{'request.'.$cid.'.domain'};
3967: $name = $env{'request.'.$cid.'.num'};
3968: }
3969: my $value = $accesshash{$entry};
3970: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3971: my %temphash=($url => $value);
3972: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3973: if ($result eq 'ok') {
3974: delete $accesshash{$entry};
3975: }
3976: } else {
3977: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3978: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3979: my %temphash=($entry => $accesshash{$entry});
3980: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3981: delete $accesshash{$entry};
3982: }
3983: }
3984: }
3985: #
3986: # Roles
3987: # Reverse lookup of user roles for course faculty/staff and co-authorship
3988: #
3989: foreach my $entry (keys(%userrolehash)) {
3990: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3991: split(/\:/,$entry);
3992: if (&Apache::lonnet::put('nohist_userroles',
3993: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3994: $rudom,$runame) eq 'ok') {
3995: delete $userrolehash{$entry};
3996: }
3997: }
3998: #
3999: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4000: #
4001: my %domrolebuffer = ();
4002: foreach my $entry (keys(%domainrolehash)) {
4003: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4004: if ($domrolebuffer{$rudom}) {
4005: $domrolebuffer{$rudom}.='&'.&escape($entry).
4006: '='.&escape($domainrolehash{$entry});
4007: } else {
4008: $domrolebuffer{$rudom}.=&escape($entry).
4009: '='.&escape($domainrolehash{$entry});
4010: }
4011: delete $domainrolehash{$entry};
4012: }
4013: foreach my $dom (keys(%domrolebuffer)) {
4014: my %servers;
4015: if (defined(&domain($dom,'primary'))) {
4016: my $primary=&domain($dom,'primary');
4017: my $hostname=&hostname($primary);
4018: $servers{$primary} = $hostname;
4019: } else {
4020: %servers = &get_servers($dom,'library');
4021: }
4022: foreach my $tryserver (keys(%servers)) {
4023: if (&reply('domroleput:'.$dom.':'.
4024: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4025: last;
4026: } else {
4027: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4028: }
4029: }
4030: }
4031: $dumpcount++;
4032: }
4033:
4034: sub courselog {
4035: my $what=shift;
4036: $what=time.':'.$what;
4037: unless ($env{'request.course.id'}) { return ''; }
4038: $coursedombuf{$env{'request.course.id'}}=
4039: $env{'course.'.$env{'request.course.id'}.'.domain'};
4040: $coursenumbuf{$env{'request.course.id'}}=
4041: $env{'course.'.$env{'request.course.id'}.'.num'};
4042: $coursehombuf{$env{'request.course.id'}}=
4043: $env{'course.'.$env{'request.course.id'}.'.home'};
4044: $coursedescrbuf{$env{'request.course.id'}}=
4045: $env{'course.'.$env{'request.course.id'}.'.description'};
4046: $courseinstcodebuf{$env{'request.course.id'}}=
4047: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4048: $courseownerbuf{$env{'request.course.id'}}=
4049: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4050: $coursetypebuf{$env{'request.course.id'}}=
4051: $env{'course.'.$env{'request.course.id'}.'.type'};
4052: if (defined $courselogs{$env{'request.course.id'}}) {
4053: $courselogs{$env{'request.course.id'}}.='&'.$what;
4054: } else {
4055: $courselogs{$env{'request.course.id'}}.=$what;
4056: }
4057: if (length($courselogs{$env{'request.course.id'}})>4048) {
4058: &flushcourselogs();
4059: }
4060: }
4061:
4062: sub courseacclog {
4063: my $fnsymb=shift;
4064: unless ($env{'request.course.id'}) { return ''; }
4065: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4066: if ($fnsymb=~/$LONCAPA::assess_re/) {
4067: $what.=':POST';
4068: # FIXME: Probably ought to escape things....
4069: foreach my $key (keys(%env)) {
4070: if ($key=~/^form\.(.*)/) {
4071: my $formitem = $1;
4072: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4073: $what.=':'.$formitem.'='.$env{$key};
4074: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4075: $what.=':'.$formitem.'='.$env{$key};
4076: }
4077: }
4078: }
4079: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4080: # FIXME: We should not be depending on a form parameter that someone
4081: # editing lonsearchcat.pm might change in the future.
4082: if ($env{'form.phase'} eq 'course_search') {
4083: $what.= ':POST';
4084: # FIXME: Probably ought to escape things....
4085: foreach my $element ('courseexp','crsfulltext','crsrelated',
4086: 'crsdiscuss') {
4087: $what.=':'.$element.'='.$env{'form.'.$element};
4088: }
4089: }
4090: }
4091: &courselog($what);
4092: }
4093:
4094: sub countacc {
4095: my $url=&declutter(shift);
4096: return if (! defined($url) || $url eq '');
4097: unless ($env{'request.course.id'}) { return ''; }
4098: #
4099: # Mark that this url was used in this course
4100: #
4101: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4102: #
4103: # Increase the access count for this resource in this child process
4104: #
4105: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4106: $accesshash{$key}++;
4107: }
4108:
4109: sub linklog {
4110: my ($from,$to)=@_;
4111: $from=&declutter($from);
4112: $to=&declutter($to);
4113: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4114: $accesshash{$to.'___'.$from.'___goto'}=1;
4115: }
4116:
4117: sub statslog {
4118: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4119: if ($users<2) { return; }
4120: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4121: 'course' => $env{'request.course.id'},
4122: 'sections' => '"all"',
4123: 'num_students' => $users,
4124: 'part' => $part,
4125: 'symb' => $symb,
4126: 'mean_tries' => $av_attempts,
4127: 'deg_of_diff' => $degdiff});
4128: foreach my $key (keys(%dynstore)) {
4129: $accesshash{$key}=$dynstore{$key};
4130: }
4131: }
4132:
4133: sub userrolelog {
4134: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4135: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4136: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4137: $userrolehash
4138: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4139: =$tend.':'.$tstart;
4140: }
4141: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4142: $userrolehash
4143: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4144: =$tend.':'.$tstart;
4145: }
4146: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4147: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4148: $domainrolehash
4149: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4150: = $tend.':'.$tstart;
4151: }
4152: }
4153:
4154: sub courserolelog {
4155: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4156: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4157: my $cdom = $1;
4158: my $cnum = $2;
4159: my $sec = $3;
4160: my $namespace = 'rolelog';
4161: my %storehash = (
4162: role => $trole,
4163: start => $tstart,
4164: end => $tend,
4165: selfenroll => $selfenroll,
4166: context => $context,
4167: );
4168: if ($trole eq 'gr') {
4169: $namespace = 'groupslog';
4170: $storehash{'group'} = $sec;
4171: } else {
4172: $storehash{'section'} = $sec;
4173: }
4174: &write_log('course',$namespace,\%storehash,$delflag,$username,
4175: $domain,$cnum,$cdom);
4176: if (($trole ne 'st') || ($sec ne '')) {
4177: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4178: }
4179: }
4180: return;
4181: }
4182:
4183: sub domainrolelog {
4184: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4185: if ($area =~ m{^/($match_domain)/$}) {
4186: my $cdom = $1;
4187: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4188: my $namespace = 'rolelog';
4189: my %storehash = (
4190: role => $trole,
4191: start => $tstart,
4192: end => $tend,
4193: context => $context,
4194: );
4195: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4196: $domain,$domconfiguser,$cdom);
4197: }
4198: return;
4199:
4200: }
4201:
4202: sub coauthorrolelog {
4203: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4204: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4205: my $audom = $1;
4206: my $auname = $2;
4207: my $namespace = 'rolelog';
4208: my %storehash = (
4209: role => $trole,
4210: start => $tstart,
4211: end => $tend,
4212: context => $context,
4213: );
4214: &write_log('author',$namespace,\%storehash,$delflag,$username,
4215: $domain,$auname,$audom);
4216: }
4217: return;
4218: }
4219:
4220: sub get_course_adv_roles {
4221: my ($cid,$codes) = @_;
4222: $cid=$env{'request.course.id'} unless (defined($cid));
4223: my %coursehash=&coursedescription($cid);
4224: my $crstype = &Apache::loncommon::course_type($cid);
4225: my %nothide=();
4226: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4227: if ($user !~ /:/) {
4228: $nothide{join(':',split(/[\@]/,$user))}=1;
4229: } else {
4230: $nothide{$user}=1;
4231: }
4232: }
4233: my @possdoms = ($coursehash{'domain'});
4234: if ($coursehash{'checkforpriv'}) {
4235: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4236: }
4237: my %returnhash=();
4238: my %dumphash=
4239: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4240: my $now=time;
4241: my %privileged;
4242: foreach my $entry (keys(%dumphash)) {
4243: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4244: if (($tstart) && ($tstart<0)) { next; }
4245: if (($tend) && ($tend<$now)) { next; }
4246: if (($tstart) && ($now<$tstart)) { next; }
4247: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4248: if ($username eq '' || $domain eq '') { next; }
4249: if ((&privileged($username,$domain,\@possdoms)) &&
4250: (!$nothide{$username.':'.$domain})) { next; }
4251: if ($role eq 'cr') { next; }
4252: if ($codes) {
4253: if ($section) { $role .= ':'.$section; }
4254: if ($returnhash{$role}) {
4255: $returnhash{$role}.=','.$username.':'.$domain;
4256: } else {
4257: $returnhash{$role}=$username.':'.$domain;
4258: }
4259: } else {
4260: my $key=&plaintext($role,$crstype);
4261: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4262: if ($returnhash{$key}) {
4263: $returnhash{$key}.=','.$username.':'.$domain;
4264: } else {
4265: $returnhash{$key}=$username.':'.$domain;
4266: }
4267: }
4268: }
4269: return %returnhash;
4270: }
4271:
4272: sub get_my_roles {
4273: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4274: unless (defined($uname)) { $uname=$env{'user.name'}; }
4275: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4276: my (%dumphash,%nothide);
4277: if ($context eq 'userroles') {
4278: %dumphash = &dump('roles',$udom,$uname);
4279: } else {
4280: %dumphash = &dump('nohist_userroles',$udom,$uname);
4281: if ($hidepriv) {
4282: my %coursehash=&coursedescription($udom.'_'.$uname);
4283: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4284: if ($user !~ /:/) {
4285: $nothide{join(':',split(/[\@]/,$user))} = 1;
4286: } else {
4287: $nothide{$user} = 1;
4288: }
4289: }
4290: }
4291: }
4292: my %returnhash=();
4293: my $now=time;
4294: my %privileged;
4295: foreach my $entry (keys(%dumphash)) {
4296: my ($role,$tend,$tstart);
4297: if ($context eq 'userroles') {
4298: next if ($entry =~ /^rolesdef/);
4299: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4300: } else {
4301: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4302: }
4303: if (($tstart) && ($tstart<0)) { next; }
4304: my $status = 'active';
4305: if (($tend) && ($tend<=$now)) {
4306: $status = 'previous';
4307: }
4308: if (($tstart) && ($now<$tstart)) {
4309: $status = 'future';
4310: }
4311: if (ref($types) eq 'ARRAY') {
4312: if (!grep(/^\Q$status\E$/,@{$types})) {
4313: next;
4314: }
4315: } else {
4316: if ($status ne 'active') {
4317: next;
4318: }
4319: }
4320: my ($rolecode,$username,$domain,$section,$area);
4321: if ($context eq 'userroles') {
4322: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4323: (undef,$domain,$username,$section) = split(/\//,$area);
4324: } else {
4325: ($role,$username,$domain,$section) = split(/\:/,$entry);
4326: }
4327: if (ref($roledoms) eq 'ARRAY') {
4328: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4329: next;
4330: }
4331: }
4332: if (ref($roles) eq 'ARRAY') {
4333: if (!grep(/^\Q$role\E$/,@{$roles})) {
4334: if ($role =~ /^cr\//) {
4335: if (!grep(/^cr$/,@{$roles})) {
4336: next;
4337: }
4338: } elsif ($role =~ /^gr\//) {
4339: if (!grep(/^gr$/,@{$roles})) {
4340: next;
4341: }
4342: } else {
4343: next;
4344: }
4345: }
4346: }
4347: if ($hidepriv) {
4348: my @privroles = ('dc','su');
4349: if ($context eq 'userroles') {
4350: next if (grep(/^\Q$role\E$/,@privroles));
4351: } else {
4352: my $possdoms = [$domain];
4353: if (ref($roledoms) eq 'ARRAY') {
4354: push(@{$possdoms},@{$roledoms});
4355: }
4356: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4357: if (!$nothide{$username.':'.$domain}) {
4358: next;
4359: }
4360: }
4361: }
4362: }
4363: if ($withsec) {
4364: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4365: $tstart.':'.$tend;
4366: } else {
4367: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4368: }
4369: }
4370: return %returnhash;
4371: }
4372:
4373: sub get_all_adhocroles {
4374: my ($dom) = @_;
4375: my @roles_by_num = ();
4376: my %domdefaults = &get_domain_defaults($dom);
4377: my (%description,%access_in_dom,%access_info);
4378: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4379: my $count = 0;
4380: my %domcurrent = %{$domdefaults{'adhocroles'}};
4381: my %ordered;
4382: foreach my $role (sort(keys(%domcurrent))) {
4383: my ($order,$desc,$access_in_dom);
4384: if (ref($domcurrent{$role}) eq 'HASH') {
4385: $order = $domcurrent{$role}{'order'};
4386: $desc = $domcurrent{$role}{'desc'};
4387: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4388: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4389: }
4390: if ($order eq '') {
4391: $order = $count;
4392: }
4393: $ordered{$order} = $role;
4394: if ($desc ne '') {
4395: $description{$role} = $desc;
4396: } else {
4397: $description{$role}= $role;
4398: }
4399: $count++;
4400: }
4401: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4402: push(@roles_by_num,$ordered{$item});
4403: }
4404: }
4405: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4406: }
4407:
4408: sub get_my_adhocroles {
4409: my ($cid,$checkreg) = @_;
4410: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4411: if ($env{'request.course.id'} eq $cid) {
4412: $cdom = $env{'course.'.$cid.'.domain'};
4413: $cnum = $env{'course.'.$cid.'.num'};
4414: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4415: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4416: $cdom = $1;
4417: $cnum = $2;
4418: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4419: $cdom,$cnum);
4420: }
4421: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4422: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4423: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4424: if ($rosterhash{$user} ne '') {
4425: my $type = (split(/:/,$rosterhash{$user}))[5];
4426: return ([],{}) if ($type eq 'auto');
4427: }
4428: }
4429: if (($cdom ne '') && ($cnum ne '')) {
4430: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4431: my $then=$env{'user.login.time'};
4432: my $update=$env{'user.update.time'};
4433: if (!$update) {
4434: $update = $then;
4435: }
4436: my @liveroles;
4437: foreach my $role ('dh','da') {
4438: if ($env{"user.role.$role./$cdom/"}) {
4439: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4440: my $limit = $update;
4441: if ($env{'request.role'} eq "$role./$cdom/") {
4442: $limit = $then;
4443: }
4444: my $activerole = 1;
4445: if ($tstart && $tstart>$limit) { $activerole = 0; }
4446: if ($tend && $tend <$limit) { $activerole = 0; }
4447: if ($activerole) {
4448: push(@liveroles,$role);
4449: }
4450: }
4451: }
4452: if (@liveroles) {
4453: if (&homeserver($cnum,$cdom) ne 'no_host') {
4454: my ($accessref,$accessinfo,%access_in_dom);
4455: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4456: if (ref($roles_by_num) eq 'ARRAY') {
4457: if (@{$roles_by_num}) {
4458: my %settings;
4459: if ($env{'request.course.id'} eq $cid) {
4460: foreach my $envkey (keys(%env)) {
4461: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4462: $settings{$1} = $env{$envkey};
4463: }
4464: }
4465: } else {
4466: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4467: }
4468: my %setincrs;
4469: if ($settings{'internal.adhocaccess'}) {
4470: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4471: }
4472: my @statuses;
4473: if ($env{'environment.inststatus'}) {
4474: @statuses = split(/,/,$env{'environment.inststatus'});
4475: }
4476: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4477: if (ref($accessref) eq 'HASH') {
4478: %access_in_dom = %{$accessref};
4479: }
4480: foreach my $role (@{$roles_by_num}) {
4481: my ($curraccess,@okstatus,@personnel);
4482: if ($setincrs{$role}) {
4483: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4484: if ($curraccess eq 'status') {
4485: @okstatus = split(/\&/,$rest);
4486: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4487: @personnel = split(/\&/,$rest);
4488: }
4489: } else {
4490: $curraccess = $access_in_dom{$role};
4491: if (ref($accessinfo) eq 'HASH') {
4492: if ($curraccess eq 'status') {
4493: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4494: @okstatus = @{$accessinfo->{$role}};
4495: }
4496: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4497: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4498: @personnel = @{$accessinfo->{$role}};
4499: }
4500: }
4501: }
4502: }
4503: if ($curraccess eq 'none') {
4504: next;
4505: } elsif ($curraccess eq 'all') {
4506: push(@possroles,$role);
4507: } elsif ($curraccess eq 'dh') {
4508: if (grep(/^dh$/,@liveroles)) {
4509: push(@possroles,$role);
4510: } else {
4511: next;
4512: }
4513: } elsif ($curraccess eq 'da') {
4514: if (grep(/^da$/,@liveroles)) {
4515: push(@possroles,$role);
4516: } else {
4517: next;
4518: }
4519: } elsif ($curraccess eq 'status') {
4520: if (@okstatus) {
4521: if (!@statuses) {
4522: if (grep(/^default$/,@okstatus)) {
4523: push(@possroles,$role);
4524: }
4525: } else {
4526: foreach my $status (@okstatus) {
4527: if (grep(/^\Q$status\E$/,@statuses)) {
4528: push(@possroles,$role);
4529: last;
4530: }
4531: }
4532: }
4533: }
4534: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4535: if (grep(/^\Q$user\E$/,@personnel)) {
4536: if ($curraccess eq 'exc') {
4537: push(@possroles,$role);
4538: }
4539: } elsif ($curraccess eq 'inc') {
4540: push(@possroles,$role);
4541: }
4542: }
4543: }
4544: }
4545: }
4546: }
4547: }
4548: }
4549: }
4550: unless (ref($description) eq 'HASH') {
4551: if (ref($roles_by_num) eq 'ARRAY') {
4552: my %desc;
4553: map { $desc{$_} = $_; } (@{$roles_by_num});
4554: $description = \%desc;
4555: } else {
4556: $description = {};
4557: }
4558: }
4559: return (\@possroles,$description);
4560: }
4561:
4562: # ----------------------------------------------------- Frontpage Announcements
4563: #
4564: #
4565:
4566: sub postannounce {
4567: my ($server,$text)=@_;
4568: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4569: unless ($text=~/\w/) { $text=''; }
4570: return &reply('setannounce:'.&escape($text),$server);
4571: }
4572:
4573: sub getannounce {
4574:
4575: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4576: my $announcement='';
4577: while (my $line = <$fh>) { $announcement .= $line; }
4578: close($fh);
4579: if ($announcement=~/\w/) {
4580: return
4581: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4582: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4583: } else {
4584: return '';
4585: }
4586: } else {
4587: return '';
4588: }
4589: }
4590:
4591: # ---------------------------------------------------------- Course ID routines
4592: # Deal with domain's nohist_courseid.db files
4593: #
4594:
4595: sub courseidput {
4596: my ($domain,$storehash,$coursehome,$caller) = @_;
4597: return unless (ref($storehash) eq 'HASH');
4598: my $outcome;
4599: if ($caller eq 'timeonly') {
4600: my $cids = '';
4601: foreach my $item (keys(%$storehash)) {
4602: $cids.=&escape($item).'&';
4603: }
4604: $cids=~s/\&$//;
4605: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4606: $coursehome);
4607: } else {
4608: my $items = '';
4609: foreach my $item (keys(%$storehash)) {
4610: $items.= &escape($item).'='.
4611: &freeze_escape($$storehash{$item}).'&';
4612: }
4613: $items=~s/\&$//;
4614: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4615: $coursehome);
4616: }
4617: if ($outcome eq 'unknown_cmd') {
4618: my $what;
4619: foreach my $cid (keys(%$storehash)) {
4620: $what .= &escape($cid).'=';
4621: foreach my $item ('description','inst_code','owner','type') {
4622: $what .= &escape($storehash->{$cid}{$item}).':';
4623: }
4624: $what =~ s/\:$/&/;
4625: }
4626: $what =~ s/\&$//;
4627: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4628: } else {
4629: return $outcome;
4630: }
4631: }
4632:
4633: sub courseiddump {
4634: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4635: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4636: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4637: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4638: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
4639: my $as_hash = 1;
4640: my %returnhash;
4641: if (!$domfilter) { $domfilter=''; }
4642: my %libserv = &all_library();
4643: foreach my $tryserver (keys(%libserv)) {
4644: if ( ( $hostidflag == 1
4645: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4646: || (!defined($hostidflag)) ) {
4647:
4648: if (($domfilter eq '') ||
4649: (&host_domain($tryserver) eq $domfilter)) {
4650: my $rep;
4651: if (grep { $_ eq $tryserver } ¤t_machine_ids()) {
4652: $rep = &LONCAPA::Lond::dump_course_id_handler(
4653: join(":", (&host_domain($tryserver), $sincefilter,
4654: &escape($descfilter), &escape($instcodefilter),
4655: &escape($ownerfilter), &escape($coursefilter),
4656: &escape($typefilter), &escape($regexp_ok),
4657: $as_hash, &escape($selfenrollonly),
4658: &escape($catfilter), $showhidden, $caller,
4659: &escape($cloner), &escape($cc_clone), $cloneonly,
4660: &escape($createdbefore), &escape($createdafter),
4661: &escape($creationcontext),$domcloner,$hasuniquecode,
4662: $reqcrsdom,&escape($reqinstcode))));
4663: } else {
4664: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4665: $sincefilter.':'.&escape($descfilter).':'.
4666: &escape($instcodefilter).':'.&escape($ownerfilter).
4667: ':'.&escape($coursefilter).':'.&escape($typefilter).
4668: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4669: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4670: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4671: &escape($cc_clone).':'.$cloneonly.':'.
4672: &escape($createdbefore).':'.&escape($createdafter).':'.
4673: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
4674: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
4675: }
4676:
4677: my @pairs=split(/\&/,$rep);
4678: foreach my $item (@pairs) {
4679: my ($key,$value)=split(/\=/,$item,2);
4680: $key = &unescape($key);
4681: next if ($key =~ /^error: 2 /);
4682: my $result = &thaw_unescape($value);
4683: if (ref($result) eq 'HASH') {
4684: $returnhash{$key}=$result;
4685: } else {
4686: my @responses = split(/:/,$value);
4687: my @items = ('description','inst_code','owner','type');
4688: for (my $i=0; $i<@responses; $i++) {
4689: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4690: }
4691: }
4692: }
4693: }
4694: }
4695: }
4696: return %returnhash;
4697: }
4698:
4699: sub courselastaccess {
4700: my ($cdom,$cnum,$hostidref) = @_;
4701: my %returnhash;
4702: if ($cdom && $cnum) {
4703: my $chome = &homeserver($cnum,$cdom);
4704: if ($chome ne 'no_host') {
4705: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4706: &extract_lastaccess(\%returnhash,$rep);
4707: }
4708: } else {
4709: if (!$cdom) { $cdom=''; }
4710: my %libserv = &all_library();
4711: foreach my $tryserver (keys(%libserv)) {
4712: if (ref($hostidref) eq 'ARRAY') {
4713: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4714: }
4715: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4716: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4717: &extract_lastaccess(\%returnhash,$rep);
4718: }
4719: }
4720: }
4721: return %returnhash;
4722: }
4723:
4724: sub extract_lastaccess {
4725: my ($returnhash,$rep) = @_;
4726: if (ref($returnhash) eq 'HASH') {
4727: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4728: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4729: $rep eq '') {
4730: my @pairs=split(/\&/,$rep);
4731: foreach my $item (@pairs) {
4732: my ($key,$value)=split(/\=/,$item,2);
4733: $key = &unescape($key);
4734: next if ($key =~ /^error: 2 /);
4735: $returnhash->{$key} = &thaw_unescape($value);
4736: }
4737: }
4738: }
4739: return;
4740: }
4741:
4742: # ---------------------------------------------------------- DC e-mail
4743:
4744: sub dcmailput {
4745: my ($domain,$msgid,$message,$server)=@_;
4746: my $status = &Apache::lonnet::critical(
4747: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4748: &escape($message),$server);
4749: return $status;
4750: }
4751:
4752: sub dcmaildump {
4753: my ($dom,$startdate,$enddate,$senders) = @_;
4754: my %returnhash=();
4755:
4756: if (defined(&domain($dom,'primary'))) {
4757: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4758: &escape($enddate).':';
4759: my @esc_senders=map { &escape($_)} @$senders;
4760: $cmd.=&escape(join('&',@esc_senders));
4761: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4762: my ($key,$value) = split(/\=/,$line,2);
4763: if (($key) && ($value)) {
4764: $returnhash{&unescape($key)} = &unescape($value);
4765: }
4766: }
4767: }
4768: return %returnhash;
4769: }
4770: # ---------------------------------------------------------- Domain roles
4771:
4772: sub get_domain_roles {
4773: my ($dom,$roles,$startdate,$enddate)=@_;
4774: if ((!defined($startdate)) || ($startdate eq '')) {
4775: $startdate = '.';
4776: }
4777: if ((!defined($enddate)) || ($enddate eq '')) {
4778: $enddate = '.';
4779: }
4780: my $rolelist;
4781: if (ref($roles) eq 'ARRAY') {
4782: $rolelist = join('&',@{$roles});
4783: }
4784: my %personnel = ();
4785:
4786: my %servers = &get_servers($dom,'library');
4787: foreach my $tryserver (keys(%servers)) {
4788: %{$personnel{$tryserver}}=();
4789: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4790: &escape($startdate).':'.
4791: &escape($enddate).':'.
4792: &escape($rolelist), $tryserver))) {
4793: my ($key,$value) = split(/\=/,$line,2);
4794: if (($key) && ($value)) {
4795: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4796: }
4797: }
4798: }
4799: return %personnel;
4800: }
4801:
4802: sub get_active_domroles {
4803: my ($dom,$roles) = @_;
4804: return () unless (ref($roles) eq 'ARRAY');
4805: my $now = time;
4806: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
4807: my %domroles;
4808: foreach my $server (keys(%dompersonnel)) {
4809: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
4810: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
4811: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
4812: }
4813: }
4814: return %domroles;
4815: }
4816:
4817: # ----------------------------------------------------------- Interval timing
4818:
4819: {
4820: # Caches needed for speedup of navmaps
4821: # We don't want to cache this for very long at all (5 seconds at most)
4822: #
4823: # The user for whom we cache
4824: my $cachedkey='';
4825: # The cached times for this user
4826: my %cachedtimes=();
4827: # When this was last done
4828: my $cachedtime='';
4829:
4830: sub load_all_first_access {
4831: my ($uname,$udom,$ignorecache)=@_;
4832: if (($cachedkey eq $uname.':'.$udom) &&
4833: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
4834: (!$ignorecache)) {
4835: return;
4836: }
4837: $cachedtime=time;
4838: $cachedkey=$uname.':'.$udom;
4839: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4840: }
4841:
4842: sub get_first_access {
4843: my ($type,$argsymb,$argmap,$ignorecache)=@_;
4844: my ($symb,$courseid,$udom,$uname)=&whichuser();
4845: if ($argsymb) { $symb=$argsymb; }
4846: my ($map,$id,$res)=&decode_symb($symb);
4847: if ($argmap) { $map = $argmap; }
4848: if ($type eq 'course') {
4849: $res='course';
4850: } elsif ($type eq 'map') {
4851: $res=&symbread($map);
4852: } else {
4853: $res=$symb;
4854: }
4855: &load_all_first_access($uname,$udom,$ignorecache);
4856: return $cachedtimes{"$courseid\0$res"};
4857: }
4858:
4859: sub set_first_access {
4860: my ($type,$interval)=@_;
4861: my ($symb,$courseid,$udom,$uname)=&whichuser();
4862: my ($map,$id,$res)=&decode_symb($symb);
4863: if ($type eq 'course') {
4864: $res='course';
4865: } elsif ($type eq 'map') {
4866: $res=&symbread($map);
4867: } else {
4868: $res=$symb;
4869: }
4870: $cachedkey='';
4871: my $firstaccess=&get_first_access($type,$symb,$map);
4872: if (!$firstaccess) {
4873: my $start = time;
4874: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4875: $udom,$uname);
4876: if ($putres eq 'ok') {
4877: &put('timerinterval',{"$courseid\0$res"=>$interval},
4878: $udom,$uname);
4879: &appenv(
4880: {
4881: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4882: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4883: }
4884: );
4885: }
4886: return $putres;
4887: }
4888: return 'already_set';
4889: }
4890: }
4891:
4892: sub checkout {
4893: my ($symb,$tuname,$tudom,$tcrsid)=@_;
4894: my $now=time;
4895: my $lonhost=$perlvar{'lonHostID'};
4896: my $infostr=&escape(
4897: 'CHECKOUTTOKEN&'.
4898: $tuname.'&'.
4899: $tudom.'&'.
4900: $tcrsid.'&'.
4901: $symb.'&'.
4902: $now.'&'.$ENV{'REMOTE_ADDR'});
4903: my $token=&reply('tmpput:'.$infostr,$lonhost);
4904: if ($token=~/^error\:/) {
4905: &logthis("<font color=\"blue\">WARNING: ".
4906: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
4907: "</font>");
4908: return '';
4909: }
4910:
4911: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
4912: $token=~tr/a-z/A-Z/;
4913:
4914: my %infohash=('resource.0.outtoken' => $token,
4915: 'resource.0.checkouttime' => $now,
4916: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
4917:
4918: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
4919: return '';
4920: } else {
4921: &logthis("<font color=\"blue\">WARNING: ".
4922: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
4923: "</font>");
4924: }
4925:
4926: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
4927: &escape('Checkout '.$infostr.' - '.
4928: $token)) ne 'ok') {
4929: return '';
4930: } else {
4931: &logthis("<font color=\"blue\">WARNING: ".
4932: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
4933: "</font>");
4934: }
4935: return $token;
4936: }
4937:
4938: # ------------------------------------------------------------ Check in an item
4939:
4940: sub checkin {
4941: my $token=shift;
4942: my $now=time;
4943: my ($ta,$tb,$lonhost)=split(/\*/,$token);
4944: $lonhost=~tr/A-Z/a-z/;
4945: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
4946: $dtoken=~s/\W/\_/g;
4947: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
4948: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
4949:
4950: unless (($tuname) && ($tudom)) {
4951: &logthis('Check in '.$token.' ('.$dtoken.') failed');
4952: return '';
4953: }
4954:
4955: unless (&allowed('mgr',$tcrsid)) {
4956: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
4957: $env{'user.name'}.' - '.$env{'user.domain'});
4958: return '';
4959: }
4960:
4961: my %infohash=('resource.0.intoken' => $token,
4962: 'resource.0.checkintime' => $now,
4963: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
4964:
4965: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
4966: return '';
4967: }
4968:
4969: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
4970: &escape('Checkin - '.$token)) ne 'ok') {
4971: return '';
4972: }
4973:
4974: return ($symb,$tuname,$tudom,$tcrsid);
4975: }
4976:
4977: # --------------------------------------------- Set Expire Date for Spreadsheet
4978:
4979: sub expirespread {
4980: my ($uname,$udom,$stype,$usymb)=@_;
4981: my $cid=$env{'request.course.id'};
4982: if ($cid) {
4983: my $now=time;
4984: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4985: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4986: $env{'course.'.$cid.'.num'}.
4987: ':nohist_expirationdates:'.
4988: &escape($key).'='.$now,
4989: $env{'course.'.$cid.'.home'})
4990: }
4991: return 'ok';
4992: }
4993:
4994: # ----------------------------------------------------- Devalidate Spreadsheets
4995:
4996: sub devalidate {
4997: my ($symb,$uname,$udom)=@_;
4998: my $cid=$env{'request.course.id'};
4999: if ($cid) {
5000: # delete the stored spreadsheets for
5001: # - the student level sheet of this user in course's homespace
5002: # - the assessment level sheet for this resource
5003: # for this user in user's homespace
5004: # - current conditional state info
5005: my $key=$uname.':'.$udom.':';
5006: my $status=
5007: &del('nohist_calculatedsheets',
5008: [$key.'studentcalc:'],
5009: $env{'course.'.$cid.'.domain'},
5010: $env{'course.'.$cid.'.num'})
5011: .' '.
5012: &del('nohist_calculatedsheets_'.$cid,
5013: [$key.'assesscalc:'.$symb],$udom,$uname);
5014: unless ($status eq 'ok ok') {
5015: &logthis('Could not devalidate spreadsheet '.
5016: $uname.' at '.$udom.' for '.
5017: $symb.': '.$status);
5018: }
5019: &delenv('user.state.'.$cid);
5020: }
5021: }
5022:
5023: sub get_scalar {
5024: my ($string,$end) = @_;
5025: my $value;
5026: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5027: $value = $1;
5028: } elsif ($$string =~ s/^([^&]*?)&//) {
5029: $value = $1;
5030: }
5031: return &unescape($value);
5032: }
5033:
5034: sub array2str {
5035: my (@array) = @_;
5036: my $result=&arrayref2str(\@array);
5037: $result=~s/^__ARRAY_REF__//;
5038: $result=~s/__END_ARRAY_REF__$//;
5039: return $result;
5040: }
5041:
5042: sub arrayref2str {
5043: my ($arrayref) = @_;
5044: my $result='__ARRAY_REF__';
5045: foreach my $elem (@$arrayref) {
5046: if(ref($elem) eq 'ARRAY') {
5047: $result.=&arrayref2str($elem).'&';
5048: } elsif(ref($elem) eq 'HASH') {
5049: $result.=&hashref2str($elem).'&';
5050: } elsif(ref($elem)) {
5051: #print("Got a ref of ".(ref($elem))." skipping.");
5052: } else {
5053: $result.=&escape($elem).'&';
5054: }
5055: }
5056: $result=~s/\&$//;
5057: $result .= '__END_ARRAY_REF__';
5058: return $result;
5059: }
5060:
5061: sub hash2str {
5062: my (%hash) = @_;
5063: my $result=&hashref2str(\%hash);
5064: $result=~s/^__HASH_REF__//;
5065: $result=~s/__END_HASH_REF__$//;
5066: return $result;
5067: }
5068:
5069: sub hashref2str {
5070: my ($hashref)=@_;
5071: my $result='__HASH_REF__';
5072: foreach my $key (sort(keys(%$hashref))) {
5073: if (ref($key) eq 'ARRAY') {
5074: $result.=&arrayref2str($key).'=';
5075: } elsif (ref($key) eq 'HASH') {
5076: $result.=&hashref2str($key).'=';
5077: } elsif (ref($key)) {
5078: $result.='=';
5079: #print("Got a ref of ".(ref($key))." skipping.");
5080: } else {
5081: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5082: }
5083:
5084: if(ref($hashref->{$key}) eq 'ARRAY') {
5085: $result.=&arrayref2str($hashref->{$key}).'&';
5086: } elsif(ref($hashref->{$key}) eq 'HASH') {
5087: $result.=&hashref2str($hashref->{$key}).'&';
5088: } elsif(ref($hashref->{$key})) {
5089: $result.='&';
5090: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5091: } else {
5092: $result.=&escape($hashref->{$key}).'&';
5093: }
5094: }
5095: $result=~s/\&$//;
5096: $result .= '__END_HASH_REF__';
5097: return $result;
5098: }
5099:
5100: sub str2hash {
5101: my ($string)=@_;
5102: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5103: return %$hash;
5104: }
5105:
5106: sub str2hashref {
5107: my ($string) = @_;
5108:
5109: my %hash;
5110:
5111: if($string !~ /^__HASH_REF__/) {
5112: if (! ($string eq '' || !defined($string))) {
5113: $hash{'error'}='Not hash reference';
5114: }
5115: return (\%hash, $string);
5116: }
5117:
5118: $string =~ s/^__HASH_REF__//;
5119:
5120: while($string !~ /^__END_HASH_REF__/) {
5121: #key
5122: my $key='';
5123: if($string =~ /^__HASH_REF__/) {
5124: ($key, $string)=&str2hashref($string);
5125: if(defined($key->{'error'})) {
5126: $hash{'error'}='Bad data';
5127: return (\%hash, $string);
5128: }
5129: } elsif($string =~ /^__ARRAY_REF__/) {
5130: ($key, $string)=&str2arrayref($string);
5131: if($key->[0] eq 'Array reference error') {
5132: $hash{'error'}='Bad data';
5133: return (\%hash, $string);
5134: }
5135: } else {
5136: $string =~ s/^(.*?)=//;
5137: $key=&unescape($1);
5138: }
5139: $string =~ s/^=//;
5140:
5141: #value
5142: my $value='';
5143: if($string =~ /^__HASH_REF__/) {
5144: ($value, $string)=&str2hashref($string);
5145: if(defined($value->{'error'})) {
5146: $hash{'error'}='Bad data';
5147: return (\%hash, $string);
5148: }
5149: } elsif($string =~ /^__ARRAY_REF__/) {
5150: ($value, $string)=&str2arrayref($string);
5151: if($value->[0] eq 'Array reference error') {
5152: $hash{'error'}='Bad data';
5153: return (\%hash, $string);
5154: }
5155: } else {
5156: $value=&get_scalar(\$string,'__END_HASH_REF__');
5157: }
5158: $string =~ s/^&//;
5159:
5160: $hash{$key}=$value;
5161: }
5162:
5163: $string =~ s/^__END_HASH_REF__//;
5164:
5165: return (\%hash, $string);
5166: }
5167:
5168: sub str2array {
5169: my ($string)=@_;
5170: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5171: return @$array;
5172: }
5173:
5174: sub str2arrayref {
5175: my ($string) = @_;
5176: my @array;
5177:
5178: if($string !~ /^__ARRAY_REF__/) {
5179: if (! ($string eq '' || !defined($string))) {
5180: $array[0]='Array reference error';
5181: }
5182: return (\@array, $string);
5183: }
5184:
5185: $string =~ s/^__ARRAY_REF__//;
5186:
5187: while($string !~ /^__END_ARRAY_REF__/) {
5188: my $value='';
5189: if($string =~ /^__HASH_REF__/) {
5190: ($value, $string)=&str2hashref($string);
5191: if(defined($value->{'error'})) {
5192: $array[0] ='Array reference error';
5193: return (\@array, $string);
5194: }
5195: } elsif($string =~ /^__ARRAY_REF__/) {
5196: ($value, $string)=&str2arrayref($string);
5197: if($value->[0] eq 'Array reference error') {
5198: $array[0] ='Array reference error';
5199: return (\@array, $string);
5200: }
5201: } else {
5202: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5203: }
5204: $string =~ s/^&//;
5205:
5206: push(@array, $value);
5207: }
5208:
5209: $string =~ s/^__END_ARRAY_REF__//;
5210:
5211: return (\@array, $string);
5212: }
5213:
5214: # -------------------------------------------------------------------Temp Store
5215:
5216: sub tmpreset {
5217: my ($symb,$namespace,$domain,$stuname) = @_;
5218: if (!$symb) {
5219: $symb=&symbread();
5220: if (!$symb) { $symb= $env{'request.url'}; }
5221: }
5222: $symb=escape($symb);
5223:
5224: if (!$namespace) { $namespace=$env{'request.state'}; }
5225: $namespace=~s/\//\_/g;
5226: $namespace=~s/\W//g;
5227:
5228: if (!$domain) { $domain=$env{'user.domain'}; }
5229: if (!$stuname) { $stuname=$env{'user.name'}; }
5230: if ($domain eq 'public' && $stuname eq 'public') {
5231: $stuname=$ENV{'REMOTE_ADDR'};
5232: }
5233: my $path=LONCAPA::tempdir();
5234: my %hash;
5235: if (tie(%hash,'GDBM_File',
5236: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5237: &GDBM_WRCREAT(),0640)) {
5238: foreach my $key (keys(%hash)) {
5239: if ($key=~ /:$symb/) {
5240: delete($hash{$key});
5241: }
5242: }
5243: }
5244: }
5245:
5246: sub tmpstore {
5247: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5248:
5249: if (!$symb) {
5250: $symb=&symbread();
5251: if (!$symb) { $symb= $env{'request.url'}; }
5252: }
5253: $symb=escape($symb);
5254:
5255: if (!$namespace) {
5256: # I don't think we would ever want to store this for a course.
5257: # it seems this will only be used if we don't have a course.
5258: #$namespace=$env{'request.course.id'};
5259: #if (!$namespace) {
5260: $namespace=$env{'request.state'};
5261: #}
5262: }
5263: $namespace=~s/\//\_/g;
5264: $namespace=~s/\W//g;
5265: if (!$domain) { $domain=$env{'user.domain'}; }
5266: if (!$stuname) { $stuname=$env{'user.name'}; }
5267: if ($domain eq 'public' && $stuname eq 'public') {
5268: $stuname=$ENV{'REMOTE_ADDR'};
5269: }
5270: my $now=time;
5271: my %hash;
5272: my $path=LONCAPA::tempdir();
5273: if (tie(%hash,'GDBM_File',
5274: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5275: &GDBM_WRCREAT(),0640)) {
5276: $hash{"version:$symb"}++;
5277: my $version=$hash{"version:$symb"};
5278: my $allkeys='';
5279: foreach my $key (keys(%$storehash)) {
5280: $allkeys.=$key.':';
5281: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5282: }
5283: $hash{"$version:$symb:timestamp"}=$now;
5284: $allkeys.='timestamp';
5285: $hash{"$version:keys:$symb"}=$allkeys;
5286: if (untie(%hash)) {
5287: return 'ok';
5288: } else {
5289: return "error:$!";
5290: }
5291: } else {
5292: return "error:$!";
5293: }
5294: }
5295:
5296: # -----------------------------------------------------------------Temp Restore
5297:
5298: sub tmprestore {
5299: my ($symb,$namespace,$domain,$stuname) = @_;
5300:
5301: if (!$symb) {
5302: $symb=&symbread();
5303: if (!$symb) { $symb= $env{'request.url'}; }
5304: }
5305: $symb=escape($symb);
5306:
5307: if (!$namespace) { $namespace=$env{'request.state'}; }
5308:
5309: if (!$domain) { $domain=$env{'user.domain'}; }
5310: if (!$stuname) { $stuname=$env{'user.name'}; }
5311: if ($domain eq 'public' && $stuname eq 'public') {
5312: $stuname=$ENV{'REMOTE_ADDR'};
5313: }
5314: my %returnhash;
5315: $namespace=~s/\//\_/g;
5316: $namespace=~s/\W//g;
5317: my %hash;
5318: my $path=LONCAPA::tempdir();
5319: if (tie(%hash,'GDBM_File',
5320: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5321: &GDBM_READER(),0640)) {
5322: my $version=$hash{"version:$symb"};
5323: $returnhash{'version'}=$version;
5324: my $scope;
5325: for ($scope=1;$scope<=$version;$scope++) {
5326: my $vkeys=$hash{"$scope:keys:$symb"};
5327: my @keys=split(/:/,$vkeys);
5328: my $key;
5329: $returnhash{"$scope:keys"}=$vkeys;
5330: foreach $key (@keys) {
5331: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5332: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5333: }
5334: }
5335: if (!(untie(%hash))) {
5336: return "error:$!";
5337: }
5338: } else {
5339: return "error:$!";
5340: }
5341: return %returnhash;
5342: }
5343:
5344: # ----------------------------------------------------------------------- Store
5345:
5346: sub store {
5347: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5348: my $home='';
5349:
5350: if ($stuname) { $home=&homeserver($stuname,$domain); }
5351:
5352: $symb=&symbclean($symb);
5353: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5354:
5355: if (!$domain) { $domain=$env{'user.domain'}; }
5356: if (!$stuname) { $stuname=$env{'user.name'}; }
5357:
5358: &devalidate($symb,$stuname,$domain);
5359:
5360: $symb=escape($symb);
5361: if (!$namespace) {
5362: unless ($namespace=$env{'request.course.id'}) {
5363: return '';
5364: }
5365: }
5366: if (!$home) { $home=$env{'user.home'}; }
5367:
5368: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5369: $$storehash{'host'}=$perlvar{'lonHostID'};
5370:
5371: my $namevalue='';
5372: foreach my $key (keys(%$storehash)) {
5373: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5374: }
5375: $namevalue=~s/\&$//;
5376: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5377: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5378: }
5379:
5380: # -------------------------------------------------------------- Critical Store
5381:
5382: sub cstore {
5383: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5384: my $home='';
5385:
5386: if ($stuname) { $home=&homeserver($stuname,$domain); }
5387:
5388: $symb=&symbclean($symb);
5389: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5390:
5391: if (!$domain) { $domain=$env{'user.domain'}; }
5392: if (!$stuname) { $stuname=$env{'user.name'}; }
5393:
5394: &devalidate($symb,$stuname,$domain);
5395:
5396: $symb=escape($symb);
5397: if (!$namespace) {
5398: unless ($namespace=$env{'request.course.id'}) {
5399: return '';
5400: }
5401: }
5402: if (!$home) { $home=$env{'user.home'}; }
5403:
5404: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5405: $$storehash{'host'}=$perlvar{'lonHostID'};
5406:
5407: my $namevalue='';
5408: foreach my $key (keys(%$storehash)) {
5409: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5410: }
5411: $namevalue=~s/\&$//;
5412: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5413: return critical
5414: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5415: }
5416:
5417: # --------------------------------------------------------------------- Restore
5418:
5419: sub restore {
5420: my ($symb,$namespace,$domain,$stuname) = @_;
5421: my $home='';
5422:
5423: if ($stuname) { $home=&homeserver($stuname,$domain); }
5424:
5425: if (!$symb) {
5426: return if ($namespace eq 'courserequests');
5427: unless ($symb=escape(&symbread())) { return ''; }
5428: } else {
5429: unless ($namespace eq 'courserequests') {
5430: $symb=&escape(&symbclean($symb));
5431: }
5432: }
5433: if (!$namespace) {
5434: unless ($namespace=$env{'request.course.id'}) {
5435: return '';
5436: }
5437: }
5438: if (!$domain) { $domain=$env{'user.domain'}; }
5439: if (!$stuname) { $stuname=$env{'user.name'}; }
5440: if (!$home) { $home=$env{'user.home'}; }
5441: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5442:
5443: my %returnhash=();
5444: foreach my $line (split(/\&/,$answer)) {
5445: my ($name,$value)=split(/\=/,$line);
5446: $returnhash{&unescape($name)}=&thaw_unescape($value);
5447: }
5448: my $version;
5449: for ($version=1;$version<=$returnhash{'version'};$version++) {
5450: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5451: $returnhash{$item}=$returnhash{$version.':'.$item};
5452: }
5453: }
5454: return %returnhash;
5455: }
5456:
5457: # ---------------------------------------------------------- Course Description
5458: #
5459: #
5460:
5461: sub coursedescription {
5462: my ($courseid,$args)=@_;
5463: $courseid=~s/^\///;
5464: $courseid=~s/\_/\//g;
5465: my ($cdomain,$cnum)=split(/\//,$courseid);
5466: my $chome=&homeserver($cnum,$cdomain);
5467: my $normalid=$cdomain.'_'.$cnum;
5468: # need to always cache even if we get errors otherwise we keep
5469: # trying and trying and trying to get the course description.
5470: my %envhash=();
5471: my %returnhash=();
5472:
5473: my $expiretime=600;
5474: if ($env{'request.course.id'} eq $normalid) {
5475: $expiretime=120;
5476: }
5477:
5478: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5479: if (!$args->{'freshen_cache'}
5480: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5481: foreach my $key (keys(%env)) {
5482: next if ($key !~ /^\Q$prefix\E(.*)/);
5483: my ($setting) = $1;
5484: $returnhash{$setting} = $env{$key};
5485: }
5486: return %returnhash;
5487: }
5488:
5489: # get the data again
5490:
5491: if (!$args->{'one_time'}) {
5492: $envhash{'course.'.$normalid.'.last_cache'}=time;
5493: }
5494:
5495: if ($chome ne 'no_host') {
5496: %returnhash=&dump('environment',$cdomain,$cnum);
5497: if (!exists($returnhash{'con_lost'})) {
5498: my $username = $env{'user.name'}; # Defult username
5499: if(defined $args->{'user'}) {
5500: $username = $args->{'user'};
5501: }
5502: $returnhash{'home'}= $chome;
5503: $returnhash{'domain'} = $cdomain;
5504: $returnhash{'num'} = $cnum;
5505: if (!defined($returnhash{'type'})) {
5506: $returnhash{'type'} = 'Course';
5507: }
5508: while (my ($name,$value) = each %returnhash) {
5509: $envhash{'course.'.$normalid.'.'.$name}=$value;
5510: }
5511: $returnhash{'url'}=&clutter($returnhash{'url'});
5512: $returnhash{'fn'}=LONCAPA::tempdir() .
5513: $username.'_'.$cdomain.'_'.$cnum;
5514: $envhash{'course.'.$normalid.'.home'}=$chome;
5515: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5516: $envhash{'course.'.$normalid.'.num'}=$cnum;
5517: }
5518: }
5519: if (!$args->{'one_time'}) {
5520: &appenv(\%envhash);
5521: }
5522: return %returnhash;
5523: }
5524:
5525: sub update_released_required {
5526: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5527: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5528: $cid = $env{'request.course.id'};
5529: $cdom = $env{'course.'.$cid.'.domain'};
5530: $cnum = $env{'course.'.$cid.'.num'};
5531: $chome = $env{'course.'.$cid.'.home'};
5532: }
5533: if ($needsrelease) {
5534: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5535: my $needsupdate;
5536: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5537: $needsupdate = 1;
5538: } else {
5539: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5540: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5541: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5542: $needsupdate = 1;
5543: }
5544: }
5545: if ($needsupdate) {
5546: my %needshash = (
5547: 'internal.releaserequired' => $needsrelease,
5548: );
5549: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5550: if ($putresult eq 'ok') {
5551: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5552: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5553: if (ref($crsinfo{$cid}) eq 'HASH') {
5554: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5555: &courseidput($cdom,\%crsinfo,$chome,'notime');
5556: }
5557: }
5558: }
5559: }
5560: return;
5561: }
5562:
5563: # -------------------------------------------------See if a user is privileged
5564:
5565: sub privileged {
5566: my ($username,$domain,$possdomains,$possroles)=@_;
5567: my $now = time;
5568: my $roles;
5569: if (ref($possroles) eq 'ARRAY') {
5570: $roles = $possroles;
5571: } else {
5572: $roles = ['dc','su'];
5573: }
5574: if (ref($possdomains) eq 'ARRAY') {
5575: my %privileged = &privileged_by_domain($possdomains,$roles);
5576: foreach my $dom (@{$possdomains}) {
5577: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5578: (ref($privileged{$dom}) eq 'HASH')) {
5579: foreach my $role (@{$roles}) {
5580: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5581: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5582: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5583: return 1 unless (($end && $end < $now) ||
5584: ($start && $start > $now));
5585: }
5586: }
5587: }
5588: }
5589: }
5590: } else {
5591: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5592: my $now = time;
5593:
5594: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5595: my ($trole, $tend, $tstart) = split(/_/, $role);
5596: if (grep(/^\Q$trole\E$/,@{$roles})) {
5597: return 1 unless ($tend && $tend < $now)
5598: or ($tstart && $tstart > $now);
5599: }
5600: }
5601: }
5602: return 0;
5603: }
5604:
5605: sub privileged_by_domain {
5606: my ($domains,$roles) = @_;
5607: my %privileged = ();
5608: my $cachetime = 60*60*24;
5609: my $now = time;
5610: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5611: return %privileged;
5612: }
5613: foreach my $dom (@{$domains}) {
5614: next if (ref($privileged{$dom}) eq 'HASH');
5615: my $needroles;
5616: foreach my $role (@{$roles}) {
5617: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5618: if (defined($cached)) {
5619: if (ref($result) eq 'HASH') {
5620: $privileged{$dom}{$role} = $result;
5621: }
5622: } else {
5623: $needroles = 1;
5624: }
5625: }
5626: if ($needroles) {
5627: my %dompersonnel = &get_domain_roles($dom,$roles);
5628: $privileged{$dom} = {};
5629: foreach my $server (keys(%dompersonnel)) {
5630: if (ref($dompersonnel{$server}) eq 'HASH') {
5631: foreach my $item (keys(%{$dompersonnel{$server}})) {
5632: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5633: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5634: next if ($end && $end < $now);
5635: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5636: $dompersonnel{$server}{$item};
5637: }
5638: }
5639: }
5640: if (ref($privileged{$dom}) eq 'HASH') {
5641: foreach my $role (@{$roles}) {
5642: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5643: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5644: } else {
5645: my %hash = ();
5646: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5647: }
5648: }
5649: }
5650: }
5651: }
5652: return %privileged;
5653: }
5654:
5655: # -------------------------------------------------------- Get user privileges
5656:
5657: sub rolesinit {
5658: my ($domain, $username) = @_;
5659: my %userroles = ('user.login.time' => time);
5660: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5661:
5662: # firstaccess and timerinterval are related to timed maps/resources.
5663: # also, blocking can be triggered by an activating timer
5664: # it's saved in the user's %env.
5665: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5666: my %timerinterval = &dump('timerinterval', $domain, $username);
5667: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5668: %timerintchk, %timerintenv);
5669:
5670: foreach my $key (keys(%firstaccess)) {
5671: my ($cid, $rest) = split(/\0/, $key);
5672: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5673: }
5674:
5675: foreach my $key (keys(%timerinterval)) {
5676: my ($cid,$rest) = split(/\0/,$key);
5677: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5678: }
5679:
5680: my %allroles=();
5681: my %allgroups=();
5682:
5683: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5684: my $role = $rolesdump{$area};
5685: $area =~ s/\_\w\w$//;
5686:
5687: my ($trole, $tend, $tstart, $group_privs);
5688:
5689: if ($role =~ /^cr/) {
5690: # Custom role, defined by a user
5691: # e.g., user.role.cr/msu/smith/mynewrole
5692: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5693: $trole = $1;
5694: ($tend, $tstart) = split('_', $2);
5695: } else {
5696: $trole = $role;
5697: }
5698: } elsif ($role =~ m|^gr/|) {
5699: # Role of member in a group, defined within a course/community
5700: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5701: ($trole, $tend, $tstart) = split(/_/, $role);
5702: next if $tstart eq '-1';
5703: ($trole, $group_privs) = split(/\//, $trole);
5704: $group_privs = &unescape($group_privs);
5705: } else {
5706: # Just a normal role, defined in roles.tab
5707: ($trole, $tend, $tstart) = split(/_/,$role);
5708: }
5709:
5710: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5711: $username);
5712: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5713:
5714: # role expired or not available yet?
5715: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5716: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5717:
5718: next if $area eq '' or $trole eq '';
5719:
5720: my $spec = "$trole.$area";
5721: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5722:
5723: if ($trole =~ /^cr\//) {
5724: # Custom role, defined by a user
5725: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5726: } elsif ($trole eq 'gr') {
5727: # Role of a member in a group, defined within a course/community
5728: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5729: next;
5730: } else {
5731: # Normal role, defined in roles.tab
5732: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5733: }
5734:
5735: my $cid = $tdomain.'_'.$trest;
5736: unless ($firstaccchk{$cid}) {
5737: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5738: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5739: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5740: $coursetimerstarts{$cid}{$item};
5741: }
5742: }
5743: $firstaccchk{$cid} = 1;
5744: }
5745: unless ($timerintchk{$cid}) {
5746: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5747: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5748: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5749: $coursetimerintervals{$cid}{$item};
5750: }
5751: }
5752: $timerintchk{$cid} = 1;
5753: }
5754: }
5755:
5756: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
5757: \%allroles, \%allgroups);
5758: $env{'user.adv'} = $userroles{'user.adv'};
5759: $env{'user.rar'} = $userroles{'user.rar'};
5760:
5761: return (\%userroles,\%firstaccenv,\%timerintenv);
5762: }
5763:
5764: sub set_arearole {
5765: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5766: unless ($nolog) {
5767: # log the associated role with the area
5768: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5769: }
5770: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5771: }
5772:
5773: sub custom_roleprivs {
5774: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5775: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5776: my $homsvr = &homeserver($rauthor,$rdomain);
5777: if (&hostname($homsvr) ne '') {
5778: my ($rdummy,$roledef)=
5779: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5780: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5781: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5782: if (defined($syspriv)) {
5783: if ($trest =~ /^$match_community$/) {
5784: $syspriv =~ s/bre\&S//;
5785: }
5786: $$allroles{'cm./'}.=':'.$syspriv;
5787: $$allroles{$spec.'./'}.=':'.$syspriv;
5788: }
5789: if ($tdomain ne '') {
5790: if (defined($dompriv)) {
5791: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5792: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5793: }
5794: if (($trest ne '') && (defined($coursepriv))) {
5795: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
5796: my $rolename = $1;
5797: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
5798: }
5799: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5800: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5801: }
5802: }
5803: }
5804: }
5805: }
5806:
5807: sub course_adhocrole_privs {
5808: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
5809: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
5810: if ($overrides{"internal.adhocpriv.$rolename"}) {
5811: my (%currprivs,%storeprivs);
5812: foreach my $item (split(/:/,$coursepriv)) {
5813: my ($priv,$restrict) = split(/\&/,$item);
5814: $currprivs{$priv} = $restrict;
5815: }
5816: my (%possadd,%possremove,%full);
5817: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
5818: my ($priv,$restrict)=split(/\&/,$item);
5819: $full{$priv} = $restrict;
5820: }
5821: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
5822: next if ($item eq '');
5823: my ($rule,$rest) = split(/=/,$item);
5824: next unless (($rule eq 'off') || ($rule eq 'on'));
5825: foreach my $priv (split(/:/,$rest)) {
5826: if ($priv ne '') {
5827: if ($rule eq 'off') {
5828: $possremove{$priv} = 1;
5829: } else {
5830: $possadd{$priv} = 1;
5831: }
5832: }
5833: }
5834: }
5835: foreach my $priv (sort(keys(%full))) {
5836: if (exists($currprivs{$priv})) {
5837: unless (exists($possremove{$priv})) {
5838: $storeprivs{$priv} = $currprivs{$priv};
5839: }
5840: } elsif (exists($possadd{$priv})) {
5841: $storeprivs{$priv} = $full{$priv};
5842: }
5843: }
5844: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
5845: }
5846: return $coursepriv;
5847: }
5848:
5849: sub group_roleprivs {
5850: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5851: my $access = 1;
5852: my $now = time;
5853: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5854: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5855: if ($access) {
5856: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5857: $$allgroups{$course}{$group} .=':'.$group_privs;
5858: }
5859: }
5860:
5861: sub standard_roleprivs {
5862: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5863: if (defined($pr{$trole.':s'})) {
5864: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5865: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5866: }
5867: if ($tdomain ne '') {
5868: if (defined($pr{$trole.':d'})) {
5869: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5870: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5871: }
5872: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5873: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5874: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5875: }
5876: }
5877: }
5878:
5879: sub set_userprivs {
5880: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5881: my $author=0;
5882: my $adv=0;
5883: my $rar=0;
5884: my %grouproles = ();
5885: if (keys(%{$allgroups}) > 0) {
5886: my @groupkeys;
5887: foreach my $role (keys(%{$allroles})) {
5888: push(@groupkeys,$role);
5889: }
5890: if (ref($groups_roles) eq 'HASH') {
5891: foreach my $key (keys(%{$groups_roles})) {
5892: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5893: push(@groupkeys,$key);
5894: }
5895: }
5896: }
5897: if (@groupkeys > 0) {
5898: foreach my $role (@groupkeys) {
5899: my ($trole,$area,$sec,$extendedarea);
5900: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5901: $trole = $1;
5902: $area = $2;
5903: $sec = $3;
5904: $extendedarea = $area.$sec;
5905: if (exists($$allgroups{$area})) {
5906: foreach my $group (keys(%{$$allgroups{$area}})) {
5907: my $spec = $trole.'.'.$extendedarea;
5908: $grouproles{$spec.'.'.$area.'/'.$group} =
5909: $$allgroups{$area}{$group};
5910: }
5911: }
5912: }
5913: }
5914: }
5915: }
5916: foreach my $group (keys(%grouproles)) {
5917: $$allroles{$group} = $grouproles{$group};
5918: }
5919: foreach my $role (keys(%{$allroles})) {
5920: my %thesepriv;
5921: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5922: foreach my $item (split(/:/,$$allroles{$role})) {
5923: if ($item ne '') {
5924: my ($privilege,$restrictions)=split(/&/,$item);
5925: if ($restrictions eq '') {
5926: $thesepriv{$privilege}='F';
5927: } elsif ($thesepriv{$privilege} ne 'F') {
5928: $thesepriv{$privilege}.=$restrictions;
5929: }
5930: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5931: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
5932: }
5933: }
5934: my $thesestr='';
5935: foreach my $priv (sort(keys(%thesepriv))) {
5936: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5937: }
5938: $userroles->{'user.priv.'.$role} = $thesestr;
5939: }
5940: return ($author,$adv,$rar);
5941: }
5942:
5943: sub role_status {
5944: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5945: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5946: my ($one,$two) = split(m{\./},$rolekey,2);
5947: (undef,undef,$$role) = split(/\./,$one,3);
5948: unless (!defined($$role) || $$role eq '') {
5949: $$where = '/'.$two;
5950: $$trolecode=$$role.'.'.$$where;
5951: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5952: $$tstatus='is';
5953: if ($$tstart && $$tstart>$update) {
5954: $$tstatus='future';
5955: if ($$tstart<$now) {
5956: if ($$tstart && $$tstart>$refresh) {
5957: if (($$where ne '') && ($$role ne '')) {
5958: my (%allroles,%allgroups,$group_privs,
5959: %groups_roles,@rolecodes);
5960: my %userroles = (
5961: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5962: );
5963: @rolecodes = ('cm');
5964: my $spec=$$role.'.'.$$where;
5965: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5966: if ($$role =~ /^cr\//) {
5967: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5968: push(@rolecodes,'cr');
5969: } elsif ($$role eq 'gr') {
5970: push(@rolecodes,$$role);
5971: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5972: $env{'user.name'});
5973: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5974: (undef,my $group_privs) = split(/\//,$trole);
5975: $group_privs = &unescape($group_privs);
5976: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5977: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5978: &get_groups_roles($tdomain,$trest,
5979: \%course_roles,\@rolecodes,
5980: \%groups_roles);
5981: } else {
5982: push(@rolecodes,$$role);
5983: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5984: }
5985: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
5986: \%groups_roles);
5987: &appenv(\%userroles,\@rolecodes);
5988: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
5989: }
5990: }
5991: $$tstatus = 'is';
5992: }
5993: }
5994: if ($$tend) {
5995: if ($$tend<$update) {
5996: $$tstatus='expired';
5997: } elsif ($$tend<$now) {
5998: $$tstatus='will_not';
5999: }
6000: }
6001: }
6002: }
6003: }
6004:
6005: sub get_groups_roles {
6006: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6007: return unless((ref($cdom_courseroles) eq 'HASH') &&
6008: (ref($rolecodes) eq 'ARRAY') &&
6009: (ref($groups_roles) eq 'HASH'));
6010: if (keys(%{$cdom_courseroles}) > 0) {
6011: my ($cnum) = ($rest =~ /^($match_courseid)/);
6012: if ($cdom ne '' && $cnum ne '') {
6013: foreach my $key (keys(%{$cdom_courseroles})) {
6014: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6015: my $crsrole = $1;
6016: my $crssec = $2;
6017: if ($crsrole =~ /^cr/) {
6018: unless (grep(/^cr$/,@{$rolecodes})) {
6019: push(@{$rolecodes},'cr');
6020: }
6021: } else {
6022: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6023: push(@{$rolecodes},$crsrole);
6024: }
6025: }
6026: my $rolekey = "$crsrole./$cdom/$cnum";
6027: if ($crssec ne '') {
6028: $rolekey .= "/$crssec";
6029: }
6030: $rolekey .= './';
6031: $groups_roles->{$rolekey} = $rolecodes;
6032: }
6033: }
6034: }
6035: }
6036: return;
6037: }
6038:
6039: sub delete_env_groupprivs {
6040: my ($where,$courseroles,$possroles) = @_;
6041: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6042: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6043: unless (ref($courseroles->{$udom}) eq 'HASH') {
6044: %{$courseroles->{$udom}} =
6045: &get_my_roles('','','userroles',['active'],
6046: $possroles,[$udom],1);
6047: }
6048: if (ref($courseroles->{$udom}) eq 'HASH') {
6049: foreach my $item (keys(%{$courseroles->{$udom}})) {
6050: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6051: my $area = '/'.$cdom.'/'.$cnum;
6052: my $privkey = "user.priv.$crsrole.$area";
6053: if ($crssec ne '') {
6054: $privkey .= '/'.$crssec;
6055: }
6056: $privkey .= ".$area/$group";
6057: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6058: }
6059: }
6060: return;
6061: }
6062:
6063: sub check_adhoc_privs {
6064: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6065: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6066: if ($sec) {
6067: $cckey .= '/'.$sec;
6068: }
6069: my $setprivs;
6070: if ($env{$cckey}) {
6071: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6072: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6073: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6074: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6075: $setprivs = 1;
6076: }
6077: } else {
6078: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6079: $setprivs = 1;
6080: }
6081: return $setprivs;
6082: }
6083:
6084: sub set_adhoc_privileges {
6085: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6086: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6087: my $area = '/'.$dcdom.'/'.$pickedcourse;
6088: if ($sec ne '') {
6089: $area .= '/'.$sec;
6090: }
6091: my $spec = $role.'.'.$area;
6092: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6093: $env{'user.name'},1);
6094: my %rolehash = ();
6095: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6096: my $rolename = $1;
6097: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6098: my %domdef = &get_domain_defaults($dcdom);
6099: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6100: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6101: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6102: }
6103: }
6104: } else {
6105: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6106: }
6107: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6108: &appenv(\%userroles,[$role,'cm']);
6109: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6110: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6111: &appenv( {'request.role' => $spec,
6112: 'request.role.domain' => $dcdom,
6113: 'request.course.sec' => $sec,
6114: }
6115: );
6116: my $tadv=0;
6117: if (&allowed('adv') eq 'F') { $tadv=1; }
6118: &appenv({'request.role.adv' => $tadv});
6119: }
6120: }
6121:
6122: # --------------------------------------------------------------- get interface
6123:
6124: sub get {
6125: my ($namespace,$storearr,$udomain,$uname)=@_;
6126: my $items='';
6127: foreach my $item (@$storearr) {
6128: $items.=&escape($item).'&';
6129: }
6130: $items=~s/\&$//;
6131: if (!$udomain) { $udomain=$env{'user.domain'}; }
6132: if (!$uname) { $uname=$env{'user.name'}; }
6133: my $uhome=&homeserver($uname,$udomain);
6134:
6135: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6136: my @pairs=split(/\&/,$rep);
6137: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6138: return @pairs;
6139: }
6140: my %returnhash=();
6141: my $i=0;
6142: foreach my $item (@$storearr) {
6143: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6144: $i++;
6145: }
6146: return %returnhash;
6147: }
6148:
6149: # --------------------------------------------------------------- del interface
6150:
6151: sub del {
6152: my ($namespace,$storearr,$udomain,$uname)=@_;
6153: my $items='';
6154: foreach my $item (@$storearr) {
6155: $items.=&escape($item).'&';
6156: }
6157:
6158: $items=~s/\&$//;
6159: if (!$udomain) { $udomain=$env{'user.domain'}; }
6160: if (!$uname) { $uname=$env{'user.name'}; }
6161: my $uhome=&homeserver($uname,$udomain);
6162: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6163: }
6164:
6165: # -------------------------------------------------------------- dump interface
6166:
6167: sub unserialize {
6168: my ($rep, $escapedkeys) = @_;
6169:
6170: return {} if $rep =~ /^error/;
6171:
6172: my %returnhash=();
6173: foreach my $item (split(/\&/,$rep)) {
6174: my ($key, $value) = split(/=/, $item, 2);
6175: $key = unescape($key) unless $escapedkeys;
6176: next if $key =~ /^error: 2 /;
6177: $returnhash{$key} = &thaw_unescape($value);
6178: }
6179: return \%returnhash;
6180: }
6181:
6182: # see Lond::dump_with_regexp
6183: # if $escapedkeys hash keys won't get unescaped.
6184: sub dump {
6185: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6186: if (!$udomain) { $udomain=$env{'user.domain'}; }
6187: if (!$uname) { $uname=$env{'user.name'}; }
6188: my $uhome=&homeserver($uname,$udomain);
6189:
6190: if ($regexp) {
6191: $regexp=&escape($regexp);
6192: } else {
6193: $regexp='.';
6194: }
6195: if (grep { $_ eq $uhome } ¤t_machine_ids()) {
6196: # user is hosted on this machine
6197: my $reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain,
6198: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6199: return %{&unserialize($reply, $escapedkeys)};
6200: }
6201: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6202: my @pairs=split(/\&/,$rep);
6203: my %returnhash=();
6204: if (!($rep =~ /^error/ )) {
6205: foreach my $item (@pairs) {
6206: my ($key,$value)=split(/=/,$item,2);
6207: $key = &unescape($key) unless ($escapedkeys);
6208: next if ($key =~ /^error: 2 /);
6209: $returnhash{$key}=&thaw_unescape($value);
6210: }
6211: }
6212: return %returnhash;
6213: }
6214:
6215:
6216: # --------------------------------------------------------- dumpstore interface
6217:
6218: sub dumpstore {
6219: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6220: # same as dump but keys must be escaped. They may contain colon separated
6221: # lists of values that may themself contain colons (e.g. symbs).
6222: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6223: }
6224:
6225: # -------------------------------------------------------------- keys interface
6226:
6227: sub getkeys {
6228: my ($namespace,$udomain,$uname)=@_;
6229: if (!$udomain) { $udomain=$env{'user.domain'}; }
6230: if (!$uname) { $uname=$env{'user.name'}; }
6231: my $uhome=&homeserver($uname,$udomain);
6232: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6233: my @keyarray=();
6234: foreach my $key (split(/\&/,$rep)) {
6235: next if ($key =~ /^error: 2 /);
6236: push(@keyarray,&unescape($key));
6237: }
6238: return @keyarray;
6239: }
6240:
6241: # --------------------------------------------------------------- currentdump
6242: sub currentdump {
6243: my ($courseid,$sdom,$sname)=@_;
6244: $courseid = $env{'request.course.id'} if (! defined($courseid));
6245: $sdom = $env{'user.domain'} if (! defined($sdom));
6246: $sname = $env{'user.name'} if (! defined($sname));
6247: my $uhome = &homeserver($sname,$sdom);
6248: my $rep;
6249:
6250: if (grep { $_ eq $uhome } current_machine_ids()) {
6251: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6252: $courseid)));
6253: } else {
6254: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6255: }
6256:
6257: return if ($rep =~ /^(error:|no_such_host)/);
6258: #
6259: my %returnhash=();
6260: #
6261: if ($rep eq 'unknown_cmd') {
6262: # an old lond will not know currentdump
6263: # Do a dump and make it look like a currentdump
6264: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6265: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6266: my %hash = @tmp;
6267: @tmp=();
6268: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6269: } else {
6270: my @pairs=split(/\&/,$rep);
6271: foreach my $pair (@pairs) {
6272: my ($key,$value)=split(/=/,$pair,2);
6273: my ($symb,$param) = split(/:/,$key);
6274: $returnhash{&unescape($symb)}->{&unescape($param)} =
6275: &thaw_unescape($value);
6276: }
6277: }
6278: return %returnhash;
6279: }
6280:
6281: sub convert_dump_to_currentdump{
6282: my %hash = %{shift()};
6283: my %returnhash;
6284: # Code ripped from lond, essentially. The only difference
6285: # here is the unescaping done by lonnet::dump(). Conceivably
6286: # we might run in to problems with parameter names =~ /^v\./
6287: while (my ($key,$value) = each(%hash)) {
6288: my ($v,$symb,$param) = split(/:/,$key);
6289: $symb = &unescape($symb);
6290: $param = &unescape($param);
6291: next if ($v eq 'version' || $symb eq 'keys');
6292: next if (exists($returnhash{$symb}) &&
6293: exists($returnhash{$symb}->{$param}) &&
6294: $returnhash{$symb}->{'v.'.$param} > $v);
6295: $returnhash{$symb}->{$param}=$value;
6296: $returnhash{$symb}->{'v.'.$param}=$v;
6297: }
6298: #
6299: # Remove all of the keys in the hashes which keep track of
6300: # the version of the parameter.
6301: while (my ($symb,$param_hash) = each(%returnhash)) {
6302: # use a foreach because we are going to delete from the hash.
6303: foreach my $key (keys(%$param_hash)) {
6304: delete($param_hash->{$key}) if ($key =~ /^v\./);
6305: }
6306: }
6307: return \%returnhash;
6308: }
6309:
6310: # ------------------------------------------------------ critical inc interface
6311:
6312: sub cinc {
6313: return &inc(@_,'critical');
6314: }
6315:
6316: # --------------------------------------------------------------- inc interface
6317:
6318: sub inc {
6319: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6320: if (!$udomain) { $udomain=$env{'user.domain'}; }
6321: if (!$uname) { $uname=$env{'user.name'}; }
6322: my $uhome=&homeserver($uname,$udomain);
6323: my $items='';
6324: if (! ref($store)) {
6325: # got a single value, so use that instead
6326: $items = &escape($store).'=&';
6327: } elsif (ref($store) eq 'SCALAR') {
6328: $items = &escape($$store).'=&';
6329: } elsif (ref($store) eq 'ARRAY') {
6330: $items = join('=&',map {&escape($_);} @{$store});
6331: } elsif (ref($store) eq 'HASH') {
6332: while (my($key,$value) = each(%{$store})) {
6333: $items.= &escape($key).'='.&escape($value).'&';
6334: }
6335: }
6336: $items=~s/\&$//;
6337: if ($critical) {
6338: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6339: } else {
6340: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6341: }
6342: }
6343:
6344: # --------------------------------------------------------------- put interface
6345:
6346: sub put {
6347: my ($namespace,$storehash,$udomain,$uname)=@_;
6348: if (!$udomain) { $udomain=$env{'user.domain'}; }
6349: if (!$uname) { $uname=$env{'user.name'}; }
6350: my $uhome=&homeserver($uname,$udomain);
6351: my $items='';
6352: foreach my $item (keys(%$storehash)) {
6353: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6354: }
6355: $items=~s/\&$//;
6356: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6357: }
6358:
6359: # ------------------------------------------------------------ newput interface
6360:
6361: sub newput {
6362: my ($namespace,$storehash,$udomain,$uname)=@_;
6363: if (!$udomain) { $udomain=$env{'user.domain'}; }
6364: if (!$uname) { $uname=$env{'user.name'}; }
6365: my $uhome=&homeserver($uname,$udomain);
6366: my $items='';
6367: foreach my $key (keys(%$storehash)) {
6368: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6369: }
6370: $items=~s/\&$//;
6371: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6372: }
6373:
6374: # --------------------------------------------------------- putstore interface
6375:
6376: sub putstore {
6377: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6378: if (!$udomain) { $udomain=$env{'user.domain'}; }
6379: if (!$uname) { $uname=$env{'user.name'}; }
6380: my $uhome=&homeserver($uname,$udomain);
6381: my $items='';
6382: foreach my $key (keys(%$storehash)) {
6383: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6384: }
6385: $items=~s/\&$//;
6386: my $esc_symb=&escape($symb);
6387: my $esc_v=&escape($version);
6388: my $reply =
6389: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6390: $uhome);
6391: if (($tolog) && ($reply eq 'ok')) {
6392: my $namevalue='';
6393: foreach my $key (keys(%{$storehash})) {
6394: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6395: }
6396: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6397: '&host='.&escape($perlvar{'lonHostID'}).
6398: '&version='.$esc_v.
6399: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6400: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6401: }
6402: if ($reply eq 'unknown_cmd') {
6403: # gfall back to way things use to be done
6404: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6405: $uname);
6406: }
6407: return $reply;
6408: }
6409:
6410: sub old_putstore {
6411: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6412: if (!$udomain) { $udomain=$env{'user.domain'}; }
6413: if (!$uname) { $uname=$env{'user.name'}; }
6414: my $uhome=&homeserver($uname,$udomain);
6415: my %newstorehash;
6416: foreach my $item (keys(%$storehash)) {
6417: my $key = $version.':'.&escape($symb).':'.$item;
6418: $newstorehash{$key} = $storehash->{$item};
6419: }
6420: my $items='';
6421: my %allitems = ();
6422: foreach my $item (keys(%newstorehash)) {
6423: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6424: my $key = $1.':keys:'.$2;
6425: $allitems{$key} .= $3.':';
6426: }
6427: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6428: }
6429: foreach my $item (keys(%allitems)) {
6430: $allitems{$item} =~ s/\:$//;
6431: $items.= $item.'='.$allitems{$item}.'&';
6432: }
6433: $items=~s/\&$//;
6434: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6435: }
6436:
6437: # ------------------------------------------------------ critical put interface
6438:
6439: sub cput {
6440: my ($namespace,$storehash,$udomain,$uname)=@_;
6441: if (!$udomain) { $udomain=$env{'user.domain'}; }
6442: if (!$uname) { $uname=$env{'user.name'}; }
6443: my $uhome=&homeserver($uname,$udomain);
6444: my $items='';
6445: foreach my $item (keys(%$storehash)) {
6446: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6447: }
6448: $items=~s/\&$//;
6449: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6450: }
6451:
6452: # -------------------------------------------------------------- eget interface
6453:
6454: sub eget {
6455: my ($namespace,$storearr,$udomain,$uname)=@_;
6456: my $items='';
6457: foreach my $item (@$storearr) {
6458: $items.=&escape($item).'&';
6459: }
6460: $items=~s/\&$//;
6461: if (!$udomain) { $udomain=$env{'user.domain'}; }
6462: if (!$uname) { $uname=$env{'user.name'}; }
6463: my $uhome=&homeserver($uname,$udomain);
6464: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6465: my @pairs=split(/\&/,$rep);
6466: my %returnhash=();
6467: my $i=0;
6468: foreach my $item (@$storearr) {
6469: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6470: $i++;
6471: }
6472: return %returnhash;
6473: }
6474:
6475: # ------------------------------------------------------------ tmpput interface
6476: sub tmpput {
6477: my ($storehash,$server,$context)=@_;
6478: my $items='';
6479: foreach my $item (keys(%$storehash)) {
6480: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6481: }
6482: $items=~s/\&$//;
6483: if (defined($context)) {
6484: $items .= ':'.&escape($context);
6485: }
6486: return &reply("tmpput:$items",$server);
6487: }
6488:
6489: # ------------------------------------------------------------ tmpget interface
6490: sub tmpget {
6491: my ($token,$server)=@_;
6492: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6493: my $rep=&reply("tmpget:$token",$server);
6494: my %returnhash;
6495: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6496: return %returnhash;
6497: }
6498: foreach my $item (split(/\&/,$rep)) {
6499: my ($key,$value)=split(/=/,$item);
6500: $returnhash{&unescape($key)}=&thaw_unescape($value);
6501: }
6502: return %returnhash;
6503: }
6504:
6505: # ------------------------------------------------------------ tmpdel interface
6506: sub tmpdel {
6507: my ($token,$server)=@_;
6508: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6509: return &reply("tmpdel:$token",$server);
6510: }
6511:
6512: # ------------------------------------------------------------ get_timebased_id
6513:
6514: sub get_timebased_id {
6515: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6516: $maxtries) = @_;
6517: my ($newid,$error,$dellock);
6518: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6519: return ('','ok','invalid call to get suffix');
6520: }
6521:
6522: # set defaults for any optional args for which values were not supplied
6523: if ($who eq '') {
6524: $who = $env{'user.name'}.':'.$env{'user.domain'};
6525: }
6526: if (!$locktries) {
6527: $locktries = 3;
6528: }
6529: if (!$maxtries) {
6530: $maxtries = 10;
6531: }
6532:
6533: if (($cdom eq '') || ($cnum eq '')) {
6534: if ($env{'request.course.id'}) {
6535: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6536: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6537: }
6538: if (($cdom eq '') || ($cnum eq '')) {
6539: return ('','ok','call to get suffix not in course context');
6540: }
6541: }
6542:
6543: # construct locking item
6544: my $lockhash = {
6545: $prefix."\0".'locked_'.$keyid => $who,
6546: };
6547: my $tries = 0;
6548:
6549: # attempt to get lock on nohist_$namespace file
6550: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6551: while (($gotlock ne 'ok') && $tries <$locktries) {
6552: $tries ++;
6553: sleep 1;
6554: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6555: }
6556:
6557: # attempt to get unique identifier, based on current timestamp
6558: if ($gotlock eq 'ok') {
6559: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6560: my $id = time;
6561: $newid = $id;
6562: if ($idtype eq 'addcode') {
6563: $newid .= &sixnum_code();
6564: }
6565: my $idtries = 0;
6566: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6567: if ($idtype eq 'concat') {
6568: $newid = $id.$idtries;
6569: } elsif ($idtype eq 'addcode') {
6570: $newid = $newid.&sixnum_code();
6571: } else {
6572: $newid ++;
6573: }
6574: $idtries ++;
6575: }
6576: if (!exists($inuse{$prefix."\0".$newid})) {
6577: my %new_item = (
6578: $prefix."\0".$newid => $who,
6579: );
6580: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6581: $cdom,$cnum);
6582: if ($putresult ne 'ok') {
6583: undef($newid);
6584: $error = 'error saving new item: '.$putresult;
6585: }
6586: } else {
6587: undef($newid);
6588: $error = ('error: no unique suffix available for the new item ');
6589: }
6590: # remove lock
6591: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6592: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6593: } else {
6594: $error = "error: could not obtain lockfile\n";
6595: $dellock = 'ok';
6596: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6597: $dellock = 'nolock';
6598: }
6599: }
6600: return ($newid,$dellock,$error);
6601: }
6602:
6603: sub sixnum_code {
6604: my $code;
6605: for (0..6) {
6606: $code .= int( rand(9) );
6607: }
6608: return $code;
6609: }
6610:
6611: # -------------------------------------------------- portfolio access checking
6612:
6613: sub portfolio_access {
6614: my ($requrl,$clientip) = @_;
6615: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6616: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6617: if ($result) {
6618: my %setters;
6619: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6620: my ($startblock,$endblock) =
6621: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6622: if ($startblock && $endblock) {
6623: return 'B';
6624: }
6625: } else {
6626: my ($startblock,$endblock) =
6627: &Apache::loncommon::blockcheck(\%setters,'port');
6628: if ($startblock && $endblock) {
6629: return 'B';
6630: }
6631: }
6632: }
6633: if ($result eq 'ok') {
6634: return 'F';
6635: } elsif ($result =~ /^[^:]+:guest_/) {
6636: return 'A';
6637: }
6638: return '';
6639: }
6640:
6641: sub get_portfolio_access {
6642: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6643:
6644: if (!ref($access_hash)) {
6645: my $current_perms = &get_portfile_permissions($udom,$unum);
6646: my %access_controls = &get_access_controls($current_perms,$group,
6647: $file_name);
6648: $access_hash = $access_controls{$file_name};
6649: }
6650:
6651: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6652: my $now = time;
6653: if (ref($access_hash) eq 'HASH') {
6654: foreach my $key (keys(%{$access_hash})) {
6655: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6656: if ($start > $now) {
6657: next;
6658: }
6659: if ($end && $end<$now) {
6660: next;
6661: }
6662: if ($scope eq 'public') {
6663: $public = $key;
6664: last;
6665: } elsif ($scope eq 'guest') {
6666: $guest = $key;
6667: } elsif ($scope eq 'domains') {
6668: push(@domains,$key);
6669: } elsif ($scope eq 'users') {
6670: push(@users,$key);
6671: } elsif ($scope eq 'course') {
6672: push(@courses,$key);
6673: } elsif ($scope eq 'group') {
6674: push(@groups,$key);
6675: } elsif ($scope eq 'ip') {
6676: push(@ips,$key);
6677: }
6678: }
6679: if ($public) {
6680: return 'ok';
6681: } elsif (@ips > 0) {
6682: my $allowed;
6683: foreach my $ipkey (@ips) {
6684: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6685: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6686: $allowed = 1;
6687: last;
6688: }
6689: }
6690: }
6691: if ($allowed) {
6692: return 'ok';
6693: }
6694: }
6695: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6696: if ($guest) {
6697: return $guest;
6698: }
6699: } else {
6700: if (@domains > 0) {
6701: foreach my $domkey (@domains) {
6702: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6703: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6704: return 'ok';
6705: }
6706: }
6707: }
6708: }
6709: if (@users > 0) {
6710: foreach my $userkey (@users) {
6711: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6712: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6713: if (ref($item) eq 'HASH') {
6714: if (($item->{'uname'} eq $env{'user.name'}) &&
6715: ($item->{'udom'} eq $env{'user.domain'})) {
6716: return 'ok';
6717: }
6718: }
6719: }
6720: }
6721: }
6722: }
6723: my %roleshash;
6724: my @courses_and_groups = @courses;
6725: push(@courses_and_groups,@groups);
6726: if (@courses_and_groups > 0) {
6727: my (%allgroups,%allroles);
6728: my ($start,$end,$role,$sec,$group);
6729: foreach my $envkey (%env) {
6730: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6731: my $cid = $2.'_'.$3;
6732: if ($1 eq 'gr') {
6733: $group = $4;
6734: $allgroups{$cid}{$group} = $env{$envkey};
6735: } else {
6736: if ($4 eq '') {
6737: $sec = 'none';
6738: } else {
6739: $sec = $4;
6740: }
6741: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6742: }
6743: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6744: my $cid = $2.'_'.$3;
6745: if ($4 eq '') {
6746: $sec = 'none';
6747: } else {
6748: $sec = $4;
6749: }
6750: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6751: }
6752: }
6753: if (keys(%allroles) == 0) {
6754: return;
6755: }
6756: foreach my $key (@courses_and_groups) {
6757: my %content = %{$$access_hash{$key}};
6758: my $cnum = $content{'number'};
6759: my $cdom = $content{'domain'};
6760: my $cid = $cdom.'_'.$cnum;
6761: if (!exists($allroles{$cid})) {
6762: next;
6763: }
6764: foreach my $role_id (keys(%{$content{'roles'}})) {
6765: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6766: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6767: my @status = @{$content{'roles'}{$role_id}{'access'}};
6768: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6769: foreach my $role (keys(%{$allroles{$cid}})) {
6770: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6771: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6772: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6773: if (grep/^all$/,@sections) {
6774: return 'ok';
6775: } else {
6776: if (grep/^$sec$/,@sections) {
6777: return 'ok';
6778: }
6779: }
6780: }
6781: }
6782: if (keys(%{$allgroups{$cid}}) == 0) {
6783: if (grep/^none$/,@groups) {
6784: return 'ok';
6785: }
6786: } else {
6787: if (grep/^all$/,@groups) {
6788: return 'ok';
6789: }
6790: foreach my $group (keys(%{$allgroups{$cid}})) {
6791: if (grep/^$group$/,@groups) {
6792: return 'ok';
6793: }
6794: }
6795: }
6796: }
6797: }
6798: }
6799: }
6800: }
6801: if ($guest) {
6802: return $guest;
6803: }
6804: }
6805: }
6806: return;
6807: }
6808:
6809: sub course_group_datechecker {
6810: my ($dates,$now,$status) = @_;
6811: my ($start,$end) = split(/\./,$dates);
6812: if (!$start && !$end) {
6813: return 'ok';
6814: }
6815: if (grep/^active$/,@{$status}) {
6816: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6817: return 'ok';
6818: }
6819: }
6820: if (grep/^previous$/,@{$status}) {
6821: if ($end > $now ) {
6822: return 'ok';
6823: }
6824: }
6825: if (grep/^future$/,@{$status}) {
6826: if ($start > $now) {
6827: return 'ok';
6828: }
6829: }
6830: return;
6831: }
6832:
6833: sub parse_portfolio_url {
6834: my ($url) = @_;
6835:
6836: my ($type,$udom,$unum,$group,$file_name);
6837:
6838: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6839: $type = 1;
6840: $udom = $1;
6841: $unum = $2;
6842: $file_name = $3;
6843: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6844: $type = 2;
6845: $udom = $1;
6846: $unum = $2;
6847: $group = $3;
6848: $file_name = $3.'/'.$4;
6849: }
6850: if (wantarray) {
6851: return ($type,$udom,$unum,$file_name,$group);
6852: }
6853: return $type;
6854: }
6855:
6856: sub is_portfolio_url {
6857: my ($url) = @_;
6858: return scalar(&parse_portfolio_url($url));
6859: }
6860:
6861: sub is_portfolio_file {
6862: my ($file) = @_;
6863: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6864: return 1;
6865: }
6866: return;
6867: }
6868:
6869: sub usertools_access {
6870: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6871: my ($access,%tools);
6872: if ($context eq '') {
6873: $context = 'tools';
6874: }
6875: if ($context eq 'requestcourses') {
6876: %tools = (
6877: official => 1,
6878: unofficial => 1,
6879: community => 1,
6880: textbook => 1,
6881: );
6882: } elsif ($context eq 'requestauthor') {
6883: %tools = (
6884: requestauthor => 1,
6885: );
6886: } else {
6887: %tools = (
6888: aboutme => 1,
6889: blog => 1,
6890: webdav => 1,
6891: portfolio => 1,
6892: );
6893: }
6894: return if (!defined($tools{$tool}));
6895:
6896: if (($udom eq '') || ($uname eq '')) {
6897: $udom = $env{'user.domain'};
6898: $uname = $env{'user.name'};
6899: }
6900:
6901: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6902: if ($action ne 'reload') {
6903: if ($context eq 'requestcourses') {
6904: return $env{'environment.canrequest.'.$tool};
6905: } elsif ($context eq 'requestauthor') {
6906: return $env{'environment.canrequest.author'};
6907: } else {
6908: return $env{'environment.availabletools.'.$tool};
6909: }
6910: }
6911: }
6912:
6913: my ($toolstatus,$inststatus,$envkey);
6914: if ($context eq 'requestauthor') {
6915: $envkey = $context;
6916: } else {
6917: $envkey = $context.'.'.$tool;
6918: }
6919:
6920: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6921: ($action ne 'reload')) {
6922: $toolstatus = $env{'environment.'.$envkey};
6923: $inststatus = $env{'environment.inststatus'};
6924: } else {
6925: if (ref($userenvref) eq 'HASH') {
6926: $toolstatus = $userenvref->{$envkey};
6927: $inststatus = $userenvref->{'inststatus'};
6928: } else {
6929: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6930: $toolstatus = $userenv{$envkey};
6931: $inststatus = $userenv{'inststatus'};
6932: }
6933: }
6934:
6935: if ($toolstatus ne '') {
6936: if ($toolstatus) {
6937: $access = 1;
6938: } else {
6939: $access = 0;
6940: }
6941: return $access;
6942: }
6943:
6944: my ($is_adv,%domdef);
6945: if (ref($is_advref) eq 'HASH') {
6946: $is_adv = $is_advref->{'is_adv'};
6947: } else {
6948: $is_adv = &is_advanced_user($udom,$uname);
6949: }
6950: if (ref($domdefref) eq 'HASH') {
6951: %domdef = %{$domdefref};
6952: } else {
6953: %domdef = &get_domain_defaults($udom);
6954: }
6955: if (ref($domdef{$tool}) eq 'HASH') {
6956: if ($is_adv) {
6957: if ($domdef{$tool}{'_LC_adv'} ne '') {
6958: if ($domdef{$tool}{'_LC_adv'}) {
6959: $access = 1;
6960: } else {
6961: $access = 0;
6962: }
6963: return $access;
6964: }
6965: }
6966: if ($inststatus ne '') {
6967: my ($hasaccess,$hasnoaccess);
6968: foreach my $affiliation (split(/:/,$inststatus)) {
6969: if ($domdef{$tool}{$affiliation} ne '') {
6970: if ($domdef{$tool}{$affiliation}) {
6971: $hasaccess = 1;
6972: } else {
6973: $hasnoaccess = 1;
6974: }
6975: }
6976: }
6977: if ($hasaccess || $hasnoaccess) {
6978: if ($hasaccess) {
6979: $access = 1;
6980: } elsif ($hasnoaccess) {
6981: $access = 0;
6982: }
6983: return $access;
6984: }
6985: } else {
6986: if ($domdef{$tool}{'default'} ne '') {
6987: if ($domdef{$tool}{'default'}) {
6988: $access = 1;
6989: } elsif ($domdef{$tool}{'default'} == 0) {
6990: $access = 0;
6991: }
6992: return $access;
6993: }
6994: }
6995: } else {
6996: if (($context eq 'tools') && ($tool ne 'webdav')) {
6997: $access = 1;
6998: } else {
6999: $access = 0;
7000: }
7001: return $access;
7002: }
7003: }
7004:
7005: sub is_course_owner {
7006: my ($cdom,$cnum,$udom,$uname) = @_;
7007: if (($udom eq '') || ($uname eq '')) {
7008: $udom = $env{'user.domain'};
7009: $uname = $env{'user.name'};
7010: }
7011: unless (($udom eq '') || ($uname eq '')) {
7012: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7013: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7014: return 1;
7015: } else {
7016: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7017: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7018: return 1;
7019: }
7020: }
7021: }
7022: }
7023: return;
7024: }
7025:
7026: sub is_advanced_user {
7027: my ($udom,$uname) = @_;
7028: if ($udom ne '' && $uname ne '') {
7029: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7030: if (wantarray) {
7031: return ($env{'user.adv'},$env{'user.author'});
7032: } else {
7033: return $env{'user.adv'};
7034: }
7035: }
7036: }
7037: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7038: my %allroles;
7039: my ($is_adv,$is_author);
7040: foreach my $role (keys(%roleshash)) {
7041: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7042: my $area = '/'.$tdomain.'/'.$trest;
7043: if ($sec ne '') {
7044: $area .= '/'.$sec;
7045: }
7046: if (($area ne '') && ($trole ne '')) {
7047: my $spec=$trole.'.'.$area;
7048: if ($trole =~ /^cr\//) {
7049: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7050: } elsif ($trole ne 'gr') {
7051: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7052: }
7053: if ($trole eq 'au') {
7054: $is_author = 1;
7055: }
7056: }
7057: }
7058: foreach my $role (keys(%allroles)) {
7059: last if ($is_adv);
7060: foreach my $item (split(/:/,$allroles{$role})) {
7061: if ($item ne '') {
7062: my ($privilege,$restrictions)=split(/&/,$item);
7063: if ($privilege eq 'adv') {
7064: $is_adv = 1;
7065: last;
7066: }
7067: }
7068: }
7069: }
7070: if (wantarray) {
7071: return ($is_adv,$is_author);
7072: }
7073: return $is_adv;
7074: }
7075:
7076: sub check_can_request {
7077: my ($dom,$can_request,$request_domains) = @_;
7078: my $canreq = 0;
7079: my ($types,$typename) = &Apache::loncommon::course_types();
7080: my @options = ('approval','validate','autolimit');
7081: my $optregex = join('|',@options);
7082: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7083: foreach my $type (@{$types}) {
7084: if (&usertools_access($env{'user.name'},
7085: $env{'user.domain'},
7086: $type,undef,'requestcourses')) {
7087: $canreq ++;
7088: if (ref($request_domains) eq 'HASH') {
7089: push(@{$request_domains->{$type}},$env{'user.domain'});
7090: }
7091: if ($dom eq $env{'user.domain'}) {
7092: $can_request->{$type} = 1;
7093: }
7094: }
7095: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
7096: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7097: if (@curr > 0) {
7098: foreach my $item (@curr) {
7099: if (ref($request_domains) eq 'HASH') {
7100: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7101: if ($otherdom ne '') {
7102: if (ref($request_domains->{$type}) eq 'ARRAY') {
7103: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7104: push(@{$request_domains->{$type}},$otherdom);
7105: }
7106: } else {
7107: push(@{$request_domains->{$type}},$otherdom);
7108: }
7109: }
7110: }
7111: }
7112: unless($dom eq $env{'user.domain'}) {
7113: $canreq ++;
7114: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7115: $can_request->{$type} = 1;
7116: }
7117: }
7118: }
7119: }
7120: }
7121: }
7122: return $canreq;
7123: }
7124:
7125: # ---------------------------------------------- Custom access rule evaluation
7126:
7127: sub customaccess {
7128: my ($priv,$uri)=@_;
7129: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7130: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7131: $udom = &LONCAPA::clean_domain($udom);
7132: $ucrs = &LONCAPA::clean_username($ucrs);
7133: my $access=0;
7134: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7135: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7136: if ($type eq 'user') {
7137: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7138: my ($tdom,$tuname)=split(m{/},$scope);
7139: if ($tdom) {
7140: if ($tdom ne $env{'user.domain'}) { next; }
7141: }
7142: if ($tuname) {
7143: if ($tuname ne $env{'user.name'}) { next; }
7144: }
7145: $access=($effect eq 'allow');
7146: last;
7147: }
7148: } else {
7149: if ($role) {
7150: if ($role ne $urole) { next; }
7151: }
7152: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7153: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7154: if ($tdom) {
7155: if ($tdom ne $udom) { next; }
7156: }
7157: if ($tcrs) {
7158: if ($tcrs ne $ucrs) { next; }
7159: }
7160: if ($tsec) {
7161: if ($tsec ne $usec) { next; }
7162: }
7163: $access=($effect eq 'allow');
7164: last;
7165: }
7166: if ($realm eq '' && $role eq '') {
7167: $access=($effect eq 'allow');
7168: }
7169: }
7170: }
7171: return $access;
7172: }
7173:
7174: # ------------------------------------------------- Check for a user privilege
7175:
7176: sub allowed {
7177: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7178: my $ver_orguri=$uri;
7179: $uri=&deversion($uri);
7180: my $orguri=$uri;
7181: $uri=&declutter($uri);
7182:
7183: if ($priv eq 'evb') {
7184: # Evade communication block restrictions for specified role in a course
7185: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7186: return $1;
7187: } else {
7188: return;
7189: }
7190: }
7191:
7192: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7193: # Free bre access to adm and meta resources
7194: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7195: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7196: && ($priv eq 'bre')) {
7197: return 'F';
7198: }
7199:
7200: # Free bre access to user's own portfolio contents
7201: my ($space,$domain,$name,@dir)=split('/',$uri);
7202: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7203: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7204: my %setters;
7205: my ($startblock,$endblock) =
7206: &Apache::loncommon::blockcheck(\%setters,'port');
7207: if ($startblock && $endblock) {
7208: return 'B';
7209: } else {
7210: return 'F';
7211: }
7212: }
7213:
7214: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7215: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7216: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7217: if (exists($env{'request.course.id'})) {
7218: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7219: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7220: if (($domain eq $cdom) && ($name eq $cnum)) {
7221: my $courseprivid=$env{'request.course.id'};
7222: $courseprivid=~s/\_/\//;
7223: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7224: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7225: return $1;
7226: } else {
7227: if ($env{'request.course.sec'}) {
7228: $courseprivid.='/'.$env{'request.course.sec'};
7229: }
7230: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7231: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7232: return $2;
7233: }
7234: }
7235: }
7236: }
7237: }
7238:
7239: # Free bre to public access
7240:
7241: if ($priv eq 'bre') {
7242: my $copyright=&metadata($uri,'copyright');
7243: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7244: return 'F';
7245: }
7246: if ($copyright eq 'priv') {
7247: $uri=~/([^\/]+)\/([^\/]+)\//;
7248: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7249: return '';
7250: }
7251: }
7252: if ($copyright eq 'domain') {
7253: $uri=~/([^\/]+)\/([^\/]+)\//;
7254: unless (($env{'user.domain'} eq $1) ||
7255: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7256: return '';
7257: }
7258: }
7259: if ($env{'request.role'}=~ /li\.\//) {
7260: # Library role, so allow browsing of resources in this domain.
7261: return 'F';
7262: }
7263: if ($copyright eq 'custom') {
7264: unless (&customaccess($priv,$uri)) { return ''; }
7265: }
7266: }
7267: # Domain coordinator is trying to create a course
7268: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7269: # uri is the requested domain in this case.
7270: # comparison to 'request.role.domain' shows if the user has selected
7271: # a role of dc for the domain in question.
7272: return 'F' if ($uri eq $env{'request.role.domain'});
7273: }
7274:
7275: my $thisallowed='';
7276: my $statecond=0;
7277: my $courseprivid='';
7278:
7279: my $ownaccess;
7280: # Community Coordinator or Assistant Co-author browsing resource space.
7281: if (($priv eq 'bro') && ($env{'user.author'})) {
7282: if ($uri eq '') {
7283: $ownaccess = 1;
7284: } else {
7285: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7286: my $udom = $env{'user.domain'};
7287: my $uname = $env{'user.name'};
7288: if ($uri =~ m{^\Q$udom\E/?$}) {
7289: $ownaccess = 1;
7290: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7291: unless ($uri =~ m{\.\./}) {
7292: $ownaccess = 1;
7293: }
7294: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7295: my $now = time;
7296: if ($uri =~ m{^([^/]+)/?$}) {
7297: my $adom = $1;
7298: foreach my $key (keys(%env)) {
7299: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7300: my ($start,$end) = split('.',$env{$key});
7301: if (($now >= $start) && (!$end || $end < $now)) {
7302: $ownaccess = 1;
7303: last;
7304: }
7305: }
7306: }
7307: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7308: my $adom = $1;
7309: my $aname = $2;
7310: foreach my $role ('ca','aa') {
7311: if ($env{"user.role.$role./$adom/$aname"}) {
7312: my ($start,$end) =
7313: split('.',$env{"user.role.$role./$adom/$aname"});
7314: if (($now >= $start) && (!$end || $end < $now)) {
7315: $ownaccess = 1;
7316: last;
7317: }
7318: }
7319: }
7320: }
7321: }
7322: }
7323: }
7324: }
7325:
7326: # Course
7327:
7328: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7329: unless (($priv eq 'bro') && (!$ownaccess)) {
7330: $thisallowed.=$1;
7331: }
7332: }
7333:
7334: # Domain
7335:
7336: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7337: =~/\Q$priv\E\&([^\:]*)/) {
7338: unless (($priv eq 'bro') && (!$ownaccess)) {
7339: $thisallowed.=$1;
7340: }
7341: }
7342:
7343: # User who is not author or co-author might still be able to edit
7344: # resource of an author in the domain (e.g., if Domain Coordinator).
7345: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7346: (&allowed('mdc',$env{'request.course.id'}))) {
7347: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7348: $thisallowed.=$1;
7349: }
7350: }
7351:
7352: # Course: uri itself is a course
7353: my $courseuri=$uri;
7354: $courseuri=~s/\_(\d)/\/$1/;
7355: $courseuri=~s/^([^\/])/\/$1/;
7356:
7357: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7358: =~/\Q$priv\E\&([^\:]*)/) {
7359: unless (($priv eq 'bro') && (!$ownaccess)) {
7360: $thisallowed.=$1;
7361: }
7362: }
7363:
7364: # URI is an uploaded document for this course, default permissions don't matter
7365: # not allowing 'edit' access (editupload) to uploaded course docs
7366: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7367: $thisallowed='';
7368: my ($match)=&is_on_map($uri);
7369: if ($match) {
7370: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7371: =~/\Q$priv\E\&([^\:]*)/) {
7372: my $value = $1;
7373: if ($noblockcheck) {
7374: $thisallowed.=$value;
7375: } else {
7376: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7377: if (@blockers > 0) {
7378: $thisallowed = 'B';
7379: } else {
7380: $thisallowed.=$value;
7381: }
7382: }
7383: }
7384: } else {
7385: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7386: if ($refuri) {
7387: if ($refuri =~ m|^/adm/|) {
7388: $thisallowed='F';
7389: } else {
7390: $refuri=&declutter($refuri);
7391: my ($match) = &is_on_map($refuri);
7392: if ($match) {
7393: if ($noblockcheck) {
7394: $thisallowed='F';
7395: } else {
7396: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7397: if (@blockers > 0) {
7398: $thisallowed = 'B';
7399: } else {
7400: $thisallowed='F';
7401: }
7402: }
7403: }
7404: }
7405: }
7406: }
7407: }
7408:
7409: if ($priv eq 'bre'
7410: && $thisallowed ne 'F'
7411: && $thisallowed ne '2'
7412: && &is_portfolio_url($uri)) {
7413: $thisallowed = &portfolio_access($uri,$clientip);
7414: }
7415:
7416: # Full access at system, domain or course-wide level? Exit.
7417: if ($thisallowed=~/F/) {
7418: return 'F';
7419: }
7420:
7421: # If this is generating or modifying users, exit with special codes
7422:
7423: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7424: if (($priv eq 'cca') || ($priv eq 'caa')) {
7425: my ($audom,$auname)=split('/',$uri);
7426: # no author name given, so this just checks on the general right to make a co-author in this domain
7427: unless ($auname) { return $thisallowed; }
7428: # an author name is given, so we are about to actually make a co-author for a certain account
7429: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7430: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7431: ($audom ne $env{'request.role.domain'}))) { return ''; }
7432: }
7433: return $thisallowed;
7434: }
7435: #
7436: # Gathered so far: system, domain and course wide privileges
7437: #
7438: # Course: See if uri or referer is an individual resource that is part of
7439: # the course
7440:
7441: if ($env{'request.course.id'}) {
7442:
7443: $courseprivid=$env{'request.course.id'};
7444: if ($env{'request.course.sec'}) {
7445: $courseprivid.='/'.$env{'request.course.sec'};
7446: }
7447: $courseprivid=~s/\_/\//;
7448: my $checkreferer=1;
7449: my ($match,$cond)=&is_on_map($uri);
7450: if ($match) {
7451: $statecond=$cond;
7452: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7453: =~/\Q$priv\E\&([^\:]*)/) {
7454: my $value = $1;
7455: if ($priv eq 'bre') {
7456: if ($noblockcheck) {
7457: $thisallowed.=$value;
7458: } else {
7459: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7460: if (@blockers > 0) {
7461: $thisallowed = 'B';
7462: } else {
7463: $thisallowed.=$value;
7464: }
7465: }
7466: } else {
7467: $thisallowed.=$value;
7468: }
7469: $checkreferer=0;
7470: }
7471: }
7472:
7473: if ($checkreferer) {
7474: my $refuri=$env{'httpref.'.$orguri};
7475: unless ($refuri) {
7476: foreach my $key (keys(%env)) {
7477: if ($key=~/^httpref\..*\*/) {
7478: my $pattern=$key;
7479: $pattern=~s/^httpref\.\/res\///;
7480: $pattern=~s/\*/\[\^\/\]\+/g;
7481: $pattern=~s/\//\\\//g;
7482: if ($orguri=~/$pattern/) {
7483: $refuri=$env{$key};
7484: }
7485: }
7486: }
7487: }
7488:
7489: if ($refuri) {
7490: $refuri=&declutter($refuri);
7491: my ($match,$cond)=&is_on_map($refuri);
7492: if ($match) {
7493: my $refstatecond=$cond;
7494: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7495: =~/\Q$priv\E\&([^\:]*)/) {
7496: my $value = $1;
7497: if ($priv eq 'bre') {
7498: if ($noblockcheck) {
7499: $thisallowed.=$value;
7500: } else {
7501: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7502: if (@blockers > 0) {
7503: $thisallowed = 'B';
7504: } else {
7505: $thisallowed.=$value;
7506: }
7507: }
7508: } else {
7509: $thisallowed.=$value;
7510: }
7511: $uri=$refuri;
7512: $statecond=$refstatecond;
7513: }
7514: }
7515: }
7516: }
7517: }
7518:
7519: #
7520: # Gathered now: all privileges that could apply, and condition number
7521: #
7522: #
7523: # Full or no access?
7524: #
7525:
7526: if ($thisallowed=~/F/) {
7527: return 'F';
7528: }
7529:
7530: unless ($thisallowed) {
7531: return '';
7532: }
7533:
7534: # Restrictions exist, deal with them
7535: #
7536: # C:according to course preferences
7537: # R:according to resource settings
7538: # L:unless locked
7539: # X:according to user session state
7540: #
7541:
7542: # Possibly locked functionality, check all courses
7543: # Locks might take effect only after 10 minutes cache expiration for other
7544: # courses, and 2 minutes for current course
7545:
7546: my $envkey;
7547: if ($thisallowed=~/L/) {
7548: foreach $envkey (keys(%env)) {
7549: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7550: my $courseid=$2;
7551: my $roleid=$1.'.'.$2;
7552: $courseid=~s/^\///;
7553: my $expiretime=600;
7554: if ($env{'request.role'} eq $roleid) {
7555: $expiretime=120;
7556: }
7557: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7558: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7559: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7560: &coursedescription($courseid,{'freshen_cache' => 1});
7561: }
7562: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7563: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7564: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7565: &log($env{'user.domain'},$env{'user.name'},
7566: $env{'user.home'},
7567: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7568: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7569: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7570: return '';
7571: }
7572: }
7573: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7574: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7575: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7576: &log($env{'user.domain'},$env{'user.name'},
7577: $env{'user.home'},
7578: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7579: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7580: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7581: return '';
7582: }
7583: }
7584: }
7585: }
7586: }
7587:
7588: #
7589: # Rest of the restrictions depend on selected course
7590: #
7591:
7592: unless ($env{'request.course.id'}) {
7593: if ($thisallowed eq 'A') {
7594: return 'A';
7595: } elsif ($thisallowed eq 'B') {
7596: return 'B';
7597: } else {
7598: return '1';
7599: }
7600: }
7601:
7602: #
7603: # Now user is definitely in a course
7604: #
7605:
7606:
7607: # Course preferences
7608:
7609: if ($thisallowed=~/C/) {
7610: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7611: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7612: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7613: =~/\Q$rolecode\E/) {
7614: if (($priv ne 'pch') && ($priv ne 'plc')) {
7615: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7616: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7617: $env{'request.course.id'});
7618: }
7619: return '';
7620: }
7621:
7622: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7623: =~/\Q$unamedom\E/) {
7624: if (($priv ne 'pch') && ($priv ne 'plc')) {
7625: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7626: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7627: $env{'request.course.id'});
7628: }
7629: return '';
7630: }
7631: }
7632:
7633: # Resource preferences
7634:
7635: if ($thisallowed=~/R/) {
7636: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7637: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7638: if (($priv ne 'pch') && ($priv ne 'plc')) {
7639: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7640: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7641: }
7642: return '';
7643: }
7644: }
7645:
7646: # Restricted by state or randomout?
7647:
7648: if ($thisallowed=~/X/) {
7649: if ($env{'acc.randomout'}) {
7650: if (!$symb) { $symb=&symbread($uri,1); }
7651: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7652: return '';
7653: }
7654: }
7655: if (&condval($statecond)) {
7656: return '2';
7657: } else {
7658: return '';
7659: }
7660: }
7661:
7662: if ($thisallowed eq 'A') {
7663: return 'A';
7664: } elsif ($thisallowed eq 'B') {
7665: return 'B';
7666: }
7667: return 'F';
7668: }
7669:
7670: # ------------------------------------------- Check construction space access
7671:
7672: sub constructaccess {
7673: my ($url,$setpriv)=@_;
7674:
7675: # We do not allow editing of previous versions of files
7676: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7677:
7678: # Get username and domain from URL
7679: my ($ownername,$ownerdomain,$ownerhome);
7680:
7681: ($ownerdomain,$ownername) =
7682: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)(?:/|$)});
7683:
7684: # The URL does not really point to any authorspace, forget it
7685: unless (($ownername) && ($ownerdomain)) { return ''; }
7686:
7687: # Now we need to see if the user has access to the authorspace of
7688: # $ownername at $ownerdomain
7689:
7690: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7691: # Real author for this?
7692: $ownerhome = $env{'user.home'};
7693: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7694: return ($ownername,$ownerdomain,$ownerhome);
7695: }
7696: } else {
7697: # Co-author for this?
7698: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7699: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7700: $ownerhome = &homeserver($ownername,$ownerdomain);
7701: return ($ownername,$ownerdomain,$ownerhome);
7702: }
7703: }
7704:
7705: # We don't have any access right now. If we are not possibly going to do anything about this,
7706: # we might as well leave
7707: unless ($setpriv) { return ''; }
7708:
7709: # Backdoor access?
7710: my $allowed=&allowed('eco',$ownerdomain);
7711: # Nope
7712: unless ($allowed) { return ''; }
7713: # Looks like we may have access, but could be locked by the owner of the construction space
7714: if ($allowed eq 'U') {
7715: my %blocked=&get('environment',['domcoord.author'],
7716: $ownerdomain,$ownername);
7717: # Is blocked by owner
7718: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7719: }
7720: if (($allowed eq 'F') || ($allowed eq 'U')) {
7721: # Grant temporary access
7722: my $then=$env{'user.login.time'};
7723: my $update=$env{'user.update.time'};
7724: if (!$update) { $update = $then; }
7725: my $refresh=$env{'user.refresh.time'};
7726: if (!$refresh) { $refresh = $update; }
7727: my $now = time;
7728: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7729: $now,'ca','constructaccess');
7730: $ownerhome = &homeserver($ownername,$ownerdomain);
7731: return($ownername,$ownerdomain,$ownerhome);
7732: }
7733: # No business here
7734: return '';
7735: }
7736:
7737: # ----------------------------------------------------------- Content Blocking
7738:
7739: {
7740: # Caches for faster Course Contents display where content blocking
7741: # is in operation (i.e., interval param set) for timed quiz.
7742: #
7743: # User for whom data are being temporarily cached.
7744: my $cacheduser='';
7745: # Cached blockers for this user (a hash of blocking items).
7746: my %cachedblockers=();
7747: # When the data were last cached.
7748: my $cachedlast='';
7749:
7750: sub load_all_blockers {
7751: my ($uname,$udom,$blocks)=@_;
7752: if (($uname ne '') && ($udom ne '')) {
7753: if (($cacheduser eq $uname.':'.$udom) &&
7754: (abs($cachedlast-time)<5)) {
7755: return;
7756: }
7757: }
7758: $cachedlast=time;
7759: $cacheduser=$uname.':'.$udom;
7760: %cachedblockers = &get_commblock_resources($blocks);
7761: }
7762:
7763: sub get_comm_blocks {
7764: my ($cdom,$cnum) = @_;
7765: if ($cdom eq '' || $cnum eq '') {
7766: return unless ($env{'request.course.id'});
7767: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7768: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7769: }
7770: my %commblocks;
7771: my $hashid=$cdom.'_'.$cnum;
7772: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7773: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7774: %commblocks = %{$blocksref};
7775: } else {
7776: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7777: my $cachetime = 600;
7778: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7779: }
7780: return %commblocks;
7781: }
7782:
7783: sub get_commblock_resources {
7784: my ($blocks) = @_;
7785: my %blockers = ();
7786: return %blockers unless ($env{'request.course.id'});
7787: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7788: my %commblocks;
7789: if (ref($blocks) eq 'HASH') {
7790: %commblocks = %{$blocks};
7791: } else {
7792: %commblocks = &get_comm_blocks();
7793: }
7794: return %blockers unless (keys(%commblocks) > 0);
7795: my $navmap = Apache::lonnavmaps::navmap->new();
7796: return %blockers unless (ref($navmap));
7797: my $now = time;
7798: foreach my $block (keys(%commblocks)) {
7799: if ($block =~ /^(\d+)____(\d+)$/) {
7800: my ($start,$end) = ($1,$2);
7801: if ($start <= $now && $end >= $now) {
7802: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7803: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7804: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7805: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7806: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7807: }
7808: }
7809: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7810: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7811: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7812: }
7813: }
7814: }
7815: }
7816: }
7817: } elsif ($block =~ /^firstaccess____(.+)$/) {
7818: my $item = $1;
7819: my @to_test;
7820: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7821: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7822: my @interval;
7823: my $type = 'map';
7824: if ($item eq 'course') {
7825: $type = 'course';
7826: @interval=&EXT("resource.0.interval");
7827: } else {
7828: if ($item =~ /___\d+___/) {
7829: $type = 'resource';
7830: @interval=&EXT("resource.0.interval",$item);
7831: if (ref($navmap)) {
7832: my $res = $navmap->getBySymb($item);
7833: push(@to_test,$res);
7834: }
7835: } else {
7836: my $mapsymb = &symbread($item,1);
7837: if ($mapsymb) {
7838: if (ref($navmap)) {
7839: my $mapres = $navmap->getBySymb($mapsymb);
7840: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
7841: foreach my $res (@to_test) {
7842: my $symb = $res->symb();
7843: next if ($symb eq $mapsymb);
7844: if ($symb ne '') {
7845: @interval=&EXT("resource.0.interval",$symb);
7846: if ($interval[1] eq 'map') {
7847: last;
7848: }
7849: }
7850: }
7851: }
7852: }
7853: }
7854: }
7855: if ($interval[0] =~ /^(\d+)/) {
7856: my $timelimit = $1;
7857: my $first_access;
7858: if ($type eq 'resource') {
7859: $first_access=&get_first_access($interval[1],$item);
7860: } elsif ($type eq 'map') {
7861: $first_access=&get_first_access($interval[1],undef,$item);
7862: } else {
7863: $first_access=&get_first_access($interval[1]);
7864: }
7865: if ($first_access) {
7866: my $timesup = $first_access+$timelimit;
7867: if ($timesup > $now) {
7868: my $activeblock;
7869: foreach my $res (@to_test) {
7870: if ($res->answerable()) {
7871: $activeblock = 1;
7872: last;
7873: }
7874: }
7875: if ($activeblock) {
7876: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7877: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7878: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7879: }
7880: }
7881: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7882: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7883: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7884: }
7885: }
7886: }
7887: }
7888: }
7889: }
7890: }
7891: }
7892: }
7893: }
7894: return %blockers;
7895: }
7896:
7897: sub has_comm_blocking {
7898: my ($priv,$symb,$uri,$blocks) = @_;
7899: my @blockers;
7900: return unless ($env{'request.course.id'});
7901: return unless ($priv eq 'bre');
7902: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7903: return if ($env{'request.state'} eq 'construct');
7904: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
7905: return unless (keys(%cachedblockers) > 0);
7906: my (%possibles,@symbs);
7907: if (!$symb) {
7908: $symb = &symbread($uri,1,1,1,\%possibles);
7909: }
7910: if ($symb) {
7911: @symbs = ($symb);
7912: } elsif (keys(%possibles)) {
7913: @symbs = keys(%possibles);
7914: }
7915: my $noblock;
7916: foreach my $symb (@symbs) {
7917: last if ($noblock);
7918: my ($map,$resid,$resurl)=&decode_symb($symb);
7919: foreach my $block (keys(%cachedblockers)) {
7920: if ($block =~ /^firstaccess____(.+)$/) {
7921: my $item = $1;
7922: if (($item eq $map) || ($item eq $symb)) {
7923: $noblock = 1;
7924: last;
7925: }
7926: }
7927: if (ref($cachedblockers{$block}) eq 'HASH') {
7928: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
7929: if ($cachedblockers{$block}{'resources'}{$symb}) {
7930: unless (grep(/^\Q$block\E$/,@blockers)) {
7931: push(@blockers,$block);
7932: }
7933: }
7934: }
7935: }
7936: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
7937: if ($cachedblockers{$block}{'maps'}{$map}) {
7938: unless (grep(/^\Q$block\E$/,@blockers)) {
7939: push(@blockers,$block);
7940: }
7941: }
7942: }
7943: }
7944: }
7945: return if ($noblock);
7946: return @blockers;
7947: }
7948: }
7949:
7950: # -------------------------------- Deversion and split uri into path an filename
7951:
7952: #
7953: # Removes the version from a URI and
7954: # splits it in to its filename and path to the filename.
7955: # Seems like File::Basename could have done this more clearly.
7956: # Parameters:
7957: # $uri - input URI
7958: # Returns:
7959: # Two element list consisting of
7960: # $pathname - the URI up to and excluding the trailing /
7961: # $filename - The part of the URI following the last /
7962: # NOTE:
7963: # Another realization of this is simply:
7964: # use File::Basename;
7965: # ...
7966: # $uri = shift;
7967: # $filename = basename($uri);
7968: # $path = dirname($uri);
7969: # return ($filename, $path);
7970: #
7971: # The implementation below is probably faster however.
7972: #
7973: sub split_uri_for_cond {
7974: my $uri=&deversion(&declutter(shift));
7975: my @uriparts=split(/\//,$uri);
7976: my $filename=pop(@uriparts);
7977: my $pathname=join('/',@uriparts);
7978: return ($pathname,$filename);
7979: }
7980: # --------------------------------------------------- Is a resource on the map?
7981:
7982: sub is_on_map {
7983: my ($pathname,$filename) = &split_uri_for_cond(shift);
7984: #Trying to find the conditional for the file
7985: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7986: /\&\Q$filename\E\:([\d\|]+)\&/);
7987: if ($match) {
7988: return (1,$1);
7989: } else {
7990: return (0,0);
7991: }
7992: }
7993:
7994: # --------------------------------------------------------- Get symb from alias
7995:
7996: sub get_symb_from_alias {
7997: my $symb=shift;
7998: my ($map,$resid,$url)=&decode_symb($symb);
7999: # Already is a symb
8000: if ($url) { return $symb; }
8001: # Must be an alias
8002: my $aliassymb='';
8003: my %bighash;
8004: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8005: &GDBM_READER(),0640)) {
8006: my $rid=$bighash{'mapalias_'.$symb};
8007: if ($rid) {
8008: my ($mapid,$resid)=split(/\./,$rid);
8009: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8010: $resid,$bighash{'src_'.$rid});
8011: }
8012: untie %bighash;
8013: }
8014: return $aliassymb;
8015: }
8016:
8017: # ----------------------------------------------------------------- Define Role
8018:
8019: sub definerole {
8020: if (allowed('mcr','/')) {
8021: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8022: foreach my $role (split(':',$sysrole)) {
8023: my ($crole,$cqual)=split(/\&/,$role);
8024: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8025: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8026: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8027: return "refused:s:$crole&$cqual";
8028: }
8029: }
8030: }
8031: foreach my $role (split(':',$domrole)) {
8032: my ($crole,$cqual)=split(/\&/,$role);
8033: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8034: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8035: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8036: return "refused:d:$crole&$cqual";
8037: }
8038: }
8039: }
8040: foreach my $role (split(':',$courole)) {
8041: my ($crole,$cqual)=split(/\&/,$role);
8042: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8043: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8044: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8045: return "refused:c:$crole&$cqual";
8046: }
8047: }
8048: }
8049: my $uhome;
8050: if (($uname ne '') && ($udom ne '')) {
8051: $uhome = &homeserver($uname,$udom);
8052: return $uhome if ($uhome eq 'no_host');
8053: } else {
8054: $uname = $env{'user.name'};
8055: $udom = $env{'user.domain'};
8056: $uhome = $env{'user.home'};
8057: }
8058: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8059: "$udom:$uname:rolesdef_$rolename=".
8060: escape($sysrole.'_'.$domrole.'_'.$courole);
8061: return reply($command,$uhome);
8062: } else {
8063: return 'refused';
8064: }
8065: }
8066:
8067: # ---------------- Make a metadata query against the network of library servers
8068:
8069: sub metadata_query {
8070: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8071: my %rhash;
8072: my %libserv = &all_library();
8073: my @server_list = (defined($server_array) ? @$server_array
8074: : keys(%libserv) );
8075: for my $server (@server_list) {
8076: my $domains = '';
8077: if (ref($domains_hash) eq 'HASH') {
8078: $domains = $domains_hash->{$server};
8079: }
8080: unless ($custom or $customshow) {
8081: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8082: $rhash{$server}=$reply;
8083: }
8084: else {
8085: my $reply=&reply("querysend:".&escape($query).':'.
8086: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8087: $server);
8088: $rhash{$server}=$reply;
8089: }
8090: }
8091: return \%rhash;
8092: }
8093:
8094: # ----------------------------------------- Send log queries and wait for reply
8095:
8096: sub log_query {
8097: my ($uname,$udom,$query,%filters)=@_;
8098: my $uhome=&homeserver($uname,$udom);
8099: if ($uhome eq 'no_host') { return 'error: no_host'; }
8100: my $uhost=&hostname($uhome);
8101: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8102: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8103: $uhome);
8104: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8105: return get_query_reply($queryid);
8106: }
8107:
8108: # -------------------------- Update MySQL table for portfolio file
8109:
8110: sub update_portfolio_table {
8111: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8112: if ($group ne '') {
8113: $file_name =~s /^\Q$group\E//;
8114: }
8115: my $homeserver = &homeserver($uname,$udom);
8116: my $queryid=
8117: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8118: ':'.&escape($file_name).':'.$action,$homeserver);
8119: my $reply = &get_query_reply($queryid);
8120: return $reply;
8121: }
8122:
8123: # -------------------------- Update MySQL allusers table
8124:
8125: sub update_allusers_table {
8126: my ($uname,$udom,$names) = @_;
8127: my $homeserver = &homeserver($uname,$udom);
8128: my $queryid=
8129: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8130: 'lastname='.&escape($names->{'lastname'}).'%%'.
8131: 'firstname='.&escape($names->{'firstname'}).'%%'.
8132: 'middlename='.&escape($names->{'middlename'}).'%%'.
8133: 'generation='.&escape($names->{'generation'}).'%%'.
8134: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8135: 'id='.&escape($names->{'id'}),$homeserver);
8136: return;
8137: }
8138:
8139: # ------- Request retrieval of institutional classlists for course(s)
8140:
8141: sub fetch_enrollment_query {
8142: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8143: my ($homeserver,$sleep,$loopmax);
8144: my $maxtries = 1;
8145: if ($context eq 'automated') {
8146: $homeserver = $perlvar{'lonHostID'};
8147: $sleep = 2;
8148: $loopmax = 100;
8149: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8150: } else {
8151: $homeserver = &homeserver($cnum,$dom);
8152: }
8153: my $host=&hostname($homeserver);
8154: my $cmd = '';
8155: foreach my $affiliate (keys(%{$affiliatesref})) {
8156: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8157: }
8158: $cmd =~ s/%%$//;
8159: $cmd = &escape($cmd);
8160: my $query = 'fetchenrollment';
8161: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8162: unless ($queryid=~/^\Q$host\E\_/) {
8163: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8164: return 'error: '.$queryid;
8165: }
8166: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8167: my $tries = 1;
8168: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8169: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8170: $tries ++;
8171: }
8172: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8173: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8174: } else {
8175: my @responses = split(/:/,$reply);
8176: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8177: foreach my $line (@responses) {
8178: my ($key,$value) = split(/=/,$line,2);
8179: $$replyref{$key} = $value;
8180: }
8181: } else {
8182: my $pathname = LONCAPA::tempdir();
8183: foreach my $line (@responses) {
8184: my ($key,$value) = split(/=/,$line);
8185: $$replyref{$key} = $value;
8186: if ($value > 0) {
8187: foreach my $item (@{$$affiliatesref{$key}}) {
8188: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8189: my $destname = $pathname.'/'.$filename;
8190: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8191: if ($xml_classlist =~ /^error/) {
8192: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8193: } else {
8194: if ( open(FILE,">",$destname) ) {
8195: print FILE &unescape($xml_classlist);
8196: close(FILE);
8197: } else {
8198: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8199: }
8200: }
8201: }
8202: }
8203: }
8204: }
8205: return 'ok';
8206: }
8207: return 'error';
8208: }
8209:
8210: sub get_query_reply {
8211: my ($queryid,$sleep,$loopmax) = @_;
8212: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8213: $sleep = 0.2;
8214: }
8215: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8216: $loopmax = 100;
8217: }
8218: my $replyfile=LONCAPA::tempdir().$queryid;
8219: my $reply='';
8220: for (1..$loopmax) {
8221: sleep($sleep);
8222: if (-e $replyfile.'.end') {
8223: if (open(my $fh,"<",$replyfile)) {
8224: $reply = join('',<$fh>);
8225: close($fh);
8226: } else { return 'error: reply_file_error'; }
8227: return &unescape($reply);
8228: }
8229: }
8230: return 'timeout:'.$queryid;
8231: }
8232:
8233: sub courselog_query {
8234: #
8235: # possible filters:
8236: # url: url or symb
8237: # username
8238: # domain
8239: # action: view, submit, grade
8240: # start: timestamp
8241: # end: timestamp
8242: #
8243: my (%filters)=@_;
8244: unless ($env{'request.course.id'}) { return 'no_course'; }
8245: if ($filters{'url'}) {
8246: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8247: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8248: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8249: }
8250: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8251: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8252: return &log_query($cname,$cdom,'courselog',%filters);
8253: }
8254:
8255: sub userlog_query {
8256: #
8257: # possible filters:
8258: # action: log check role
8259: # start: timestamp
8260: # end: timestamp
8261: #
8262: my ($uname,$udom,%filters)=@_;
8263: return &log_query($uname,$udom,'userlog',%filters);
8264: }
8265:
8266: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8267:
8268: sub auto_run {
8269: my ($cnum,$cdom) = @_;
8270: my $response = 0;
8271: my $settings;
8272: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8273: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8274: $settings = $domconfig{'autoenroll'};
8275: if ($settings->{'run'} eq '1') {
8276: $response = 1;
8277: }
8278: } else {
8279: my $homeserver;
8280: if (&is_course($cdom,$cnum)) {
8281: $homeserver = &homeserver($cnum,$cdom);
8282: } else {
8283: $homeserver = &domain($cdom,'primary');
8284: }
8285: if ($homeserver ne 'no_host') {
8286: $response = &reply('autorun:'.$cdom,$homeserver);
8287: }
8288: }
8289: return $response;
8290: }
8291:
8292: sub auto_get_sections {
8293: my ($cnum,$cdom,$inst_coursecode) = @_;
8294: my $homeserver;
8295: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8296: $homeserver = &homeserver($cnum,$cdom);
8297: }
8298: if (!defined($homeserver)) {
8299: if ($cdom =~ /^$match_domain$/) {
8300: $homeserver = &domain($cdom,'primary');
8301: }
8302: }
8303: my @secs;
8304: if (defined($homeserver)) {
8305: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8306: unless ($response eq 'refused') {
8307: @secs = split(/:/,$response);
8308: }
8309: }
8310: return @secs;
8311: }
8312:
8313: sub auto_new_course {
8314: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8315: my $homeserver = &homeserver($cnum,$cdom);
8316: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8317: return $response;
8318: }
8319:
8320: sub auto_validate_courseID {
8321: my ($cnum,$cdom,$inst_course_id) = @_;
8322: my $homeserver = &homeserver($cnum,$cdom);
8323: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8324: return $response;
8325: }
8326:
8327: sub auto_validate_instcode {
8328: my ($cnum,$cdom,$instcode,$owner) = @_;
8329: my ($homeserver,$response);
8330: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8331: $homeserver = &homeserver($cnum,$cdom);
8332: }
8333: if (!defined($homeserver)) {
8334: if ($cdom =~ /^$match_domain$/) {
8335: $homeserver = &domain($cdom,'primary');
8336: }
8337: }
8338: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8339: &escape($instcode).':'.&escape($owner),$homeserver));
8340: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8341: return ($outcome,$description,$defaultcredits);
8342: }
8343:
8344: sub auto_create_password {
8345: my ($cnum,$cdom,$authparam,$udom) = @_;
8346: my ($homeserver,$response);
8347: my $create_passwd = 0;
8348: my $authchk = '';
8349: if ($udom =~ /^$match_domain$/) {
8350: $homeserver = &domain($udom,'primary');
8351: }
8352: if ($homeserver eq '') {
8353: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8354: $homeserver = &homeserver($cnum,$cdom);
8355: }
8356: }
8357: if ($homeserver eq '') {
8358: $authchk = 'nodomain';
8359: } else {
8360: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8361: if ($response eq 'refused') {
8362: $authchk = 'refused';
8363: } else {
8364: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8365: }
8366: }
8367: return ($authparam,$create_passwd,$authchk);
8368: }
8369:
8370: sub auto_photo_permission {
8371: my ($cnum,$cdom,$students) = @_;
8372: my $homeserver = &homeserver($cnum,$cdom);
8373: my ($outcome,$perm_reqd,$conditions) =
8374: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8375: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8376: return (undef,undef);
8377: }
8378: return ($outcome,$perm_reqd,$conditions);
8379: }
8380:
8381: sub auto_checkphotos {
8382: my ($uname,$udom,$pid) = @_;
8383: my $homeserver = &homeserver($uname,$udom);
8384: my ($result,$resulttype);
8385: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8386: &escape($uname).':'.&escape($pid),
8387: $homeserver));
8388: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8389: return (undef,undef);
8390: }
8391: if ($outcome) {
8392: ($result,$resulttype) = split(/:/,$outcome);
8393: }
8394: return ($result,$resulttype);
8395: }
8396:
8397: sub auto_photochoice {
8398: my ($cnum,$cdom) = @_;
8399: my $homeserver = &homeserver($cnum,$cdom);
8400: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8401: &escape($cdom),
8402: $homeserver)));
8403: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8404: return (undef,undef);
8405: }
8406: return ($update,$comment);
8407: }
8408:
8409: sub auto_photoupdate {
8410: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8411: my $homeserver = &homeserver($cnum,$dom);
8412: my $host=&hostname($homeserver);
8413: my $cmd = '';
8414: my $maxtries = 1;
8415: foreach my $affiliate (keys(%{$affiliatesref})) {
8416: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8417: }
8418: $cmd =~ s/%%$//;
8419: $cmd = &escape($cmd);
8420: my $query = 'institutionalphotos';
8421: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8422: unless ($queryid=~/^\Q$host\E\_/) {
8423: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8424: return 'error: '.$queryid;
8425: }
8426: my $reply = &get_query_reply($queryid);
8427: my $tries = 1;
8428: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8429: $reply = &get_query_reply($queryid);
8430: $tries ++;
8431: }
8432: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8433: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8434: } else {
8435: my @responses = split(/:/,$reply);
8436: my $outcome = shift(@responses);
8437: foreach my $item (@responses) {
8438: my ($key,$value) = split(/=/,$item);
8439: $$photo{$key} = $value;
8440: }
8441: return $outcome;
8442: }
8443: return 'error';
8444: }
8445:
8446: sub auto_instcode_format {
8447: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8448: $cat_order) = @_;
8449: my $courses = '';
8450: my @homeservers;
8451: if ($caller eq 'global') {
8452: my %servers = &get_servers($codedom,'library');
8453: foreach my $tryserver (keys(%servers)) {
8454: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8455: push(@homeservers,$tryserver);
8456: }
8457: }
8458: } elsif ($caller eq 'requests') {
8459: if ($codedom =~ /^$match_domain$/) {
8460: my $chome = &domain($codedom,'primary');
8461: unless ($chome eq 'no_host') {
8462: push(@homeservers,$chome);
8463: }
8464: }
8465: } else {
8466: push(@homeservers,&homeserver($caller,$codedom));
8467: }
8468: foreach my $code (keys(%{$instcodes})) {
8469: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8470: }
8471: chop($courses);
8472: my $ok_response = 0;
8473: my $response;
8474: while (@homeservers > 0 && $ok_response == 0) {
8475: my $server = shift(@homeservers);
8476: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8477: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8478: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8479: split(/:/,$response);
8480: %{$codes} = (%{$codes},&str2hash($codes_str));
8481: push(@{$codetitles},&str2array($codetitles_str));
8482: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8483: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8484: $ok_response = 1;
8485: }
8486: }
8487: if ($ok_response) {
8488: return 'ok';
8489: } else {
8490: return $response;
8491: }
8492: }
8493:
8494: sub auto_instcode_defaults {
8495: my ($domain,$returnhash,$code_order) = @_;
8496: my @homeservers;
8497:
8498: my %servers = &get_servers($domain,'library');
8499: foreach my $tryserver (keys(%servers)) {
8500: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8501: push(@homeservers,$tryserver);
8502: }
8503: }
8504:
8505: my $response;
8506: foreach my $server (@homeservers) {
8507: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8508: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8509:
8510: foreach my $pair (split(/\&/,$response)) {
8511: my ($name,$value)=split(/\=/,$pair);
8512: if ($name eq 'code_order') {
8513: @{$code_order} = split(/\&/,&unescape($value));
8514: } else {
8515: $returnhash->{&unescape($name)}=&unescape($value);
8516: }
8517: }
8518: return 'ok';
8519: }
8520:
8521: return $response;
8522: }
8523:
8524: sub auto_possible_instcodes {
8525: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8526: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8527: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8528: return;
8529: }
8530: my (@homeservers,$uhome);
8531: if (defined(&domain($domain,'primary'))) {
8532: $uhome=&domain($domain,'primary');
8533: push(@homeservers,&domain($domain,'primary'));
8534: } else {
8535: my %servers = &get_servers($domain,'library');
8536: foreach my $tryserver (keys(%servers)) {
8537: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8538: push(@homeservers,$tryserver);
8539: }
8540: }
8541: }
8542: my $response;
8543: foreach my $server (@homeservers) {
8544: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8545: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8546: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8547: split(':',$response);
8548: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8549: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8550: foreach my $item (split('&',$cat_title)) {
8551: my ($name,$value)=split('=',$item);
8552: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8553: }
8554: foreach my $item (split('&',$cat_order)) {
8555: my ($name,$value)=split('=',$item);
8556: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8557: }
8558: return 'ok';
8559: }
8560: return $response;
8561: }
8562:
8563: sub auto_courserequest_checks {
8564: my ($dom) = @_;
8565: my ($homeserver,%validations);
8566: if ($dom =~ /^$match_domain$/) {
8567: $homeserver = &domain($dom,'primary');
8568: }
8569: unless ($homeserver eq 'no_host') {
8570: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8571: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8572: my @items = split(/&/,$response);
8573: foreach my $item (@items) {
8574: my ($key,$value) = split('=',$item);
8575: $validations{&unescape($key)} = &thaw_unescape($value);
8576: }
8577: }
8578: }
8579: return %validations;
8580: }
8581:
8582: sub auto_courserequest_validation {
8583: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8584: my ($homeserver,$response);
8585: if ($dom =~ /^$match_domain$/) {
8586: $homeserver = &domain($dom,'primary');
8587: }
8588: unless ($homeserver eq 'no_host') {
8589: my $customdata;
8590: if (ref($custominfo) eq 'HASH') {
8591: $customdata = &freeze_escape($custominfo);
8592: }
8593: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8594: ':'.&escape($crstype).':'.&escape($inststatuslist).
8595: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8596: $customdata,$homeserver));
8597: }
8598: return $response;
8599: }
8600:
8601: sub auto_validate_class_sec {
8602: my ($cdom,$cnum,$owners,$inst_class) = @_;
8603: my $homeserver = &homeserver($cnum,$cdom);
8604: my $ownerlist;
8605: if (ref($owners) eq 'ARRAY') {
8606: $ownerlist = join(',',@{$owners});
8607: } else {
8608: $ownerlist = $owners;
8609: }
8610: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8611: &escape($ownerlist).':'.$cdom,$homeserver);
8612: return $response;
8613: }
8614:
8615: sub auto_crsreq_update {
8616: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8617: $code,$accessstart,$accessend,$inbound) = @_;
8618: my ($homeserver,%crsreqresponse);
8619: if ($cdom =~ /^$match_domain$/) {
8620: $homeserver = &domain($cdom,'primary');
8621: }
8622: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8623: my $info;
8624: if (ref($inbound) eq 'HASH') {
8625: $info = &freeze_escape($inbound);
8626: }
8627: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8628: ':'.&escape($action).':'.&escape($ownername).':'.
8629: &escape($ownerdomain).':'.&escape($fullname).':'.
8630: &escape($title).':'.&escape($code).':'.
8631: &escape($accessstart).':'.&escape($accessend).':'.$info,$homeserver);
8632: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8633: my @items = split(/&/,$response);
8634: foreach my $item (@items) {
8635: my ($key,$value) = split('=',$item);
8636: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8637: }
8638: }
8639: }
8640: return \%crsreqresponse;
8641: }
8642:
8643: sub auto_export_grades {
8644: my ($cdom,$cnum,$inforef,$gradesref) = @_;
8645: my ($homeserver,%exportresponse);
8646: if ($cdom =~ /^$match_domain$/) {
8647: $homeserver = &domain($cdom,'primary');
8648: }
8649: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8650: my $info;
8651: if (ref($inforef) eq 'HASH') {
8652: $info = &freeze_escape($inforef);
8653: }
8654: if (ref($gradesref) eq 'HASH') {
8655: my $grades = &freeze_escape($gradesref);
8656: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
8657: $info.':'.$grades,$homeserver);
8658: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
8659: my @items = split(/&/,$response);
8660: foreach my $item (@items) {
8661: my ($key,$value) = split('=',$item);
8662: $exportresponse{&unescape($key)} = &thaw_unescape($value);
8663: }
8664: }
8665: }
8666: }
8667: return \%exportresponse;
8668: }
8669:
8670: sub check_instcode_cloning {
8671: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
8672: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8673: return;
8674: }
8675: my $canclone;
8676: if (@{$code_order} > 0) {
8677: my $instcoderegexp ='^';
8678: my @clonecodes = split(/\&/,$cloner);
8679: foreach my $item (@{$code_order}) {
8680: if (grep(/^\Q$item\E=/,@clonecodes)) {
8681: foreach my $pair (@clonecodes) {
8682: my ($key,$val) = split(/\=/,$pair,2);
8683: $val = &unescape($val);
8684: if ($key eq $item) {
8685: $instcoderegexp .= '('.$val.')';
8686: last;
8687: }
8688: }
8689: } else {
8690: $instcoderegexp .= $codedefaults->{$item};
8691: }
8692: }
8693: $instcoderegexp .= '$';
8694: my (@from,@to);
8695: eval {
8696: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8697: (@to) = ($clonetocode =~ /$instcoderegexp/);
8698: };
8699: if ((@from > 0) && (@to > 0)) {
8700: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8701: if (!@diffs) {
8702: $canclone = 1;
8703: }
8704: }
8705: }
8706: return $canclone;
8707: }
8708:
8709: sub default_instcode_cloning {
8710: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
8711: my (%codedefaults,@code_order,$canclone);
8712: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
8713: %codedefaults = %{$codedefaultsref};
8714: @code_order = @{$codeorderref};
8715: } elsif ($clonedom) {
8716: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
8717: }
8718: if (($domdefclone) && (@code_order)) {
8719: my @clonecodes = split(/\+/,$domdefclone);
8720: my $instcoderegexp ='^';
8721: foreach my $item (@code_order) {
8722: if (grep(/^\Q$item\E$/,@clonecodes)) {
8723: $instcoderegexp .= '('.$codedefaults{$item}.')';
8724: } else {
8725: $instcoderegexp .= $codedefaults{$item};
8726: }
8727: }
8728: $instcoderegexp .= '$';
8729: my (@from,@to);
8730: eval {
8731: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8732: (@to) = ($clonetocode =~ /$instcoderegexp/);
8733: };
8734: if ((@from > 0) && (@to > 0)) {
8735: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8736: if (!@diffs) {
8737: $canclone = 1;
8738: }
8739: }
8740: }
8741: return $canclone;
8742: }
8743:
8744: # ------------------------------------------------------- Course Group routines
8745:
8746: sub get_coursegroups {
8747: my ($cdom,$cnum,$group,$namespace) = @_;
8748: return(&dump($namespace,$cdom,$cnum,$group));
8749: }
8750:
8751: sub modify_coursegroup {
8752: my ($cdom,$cnum,$groupsettings) = @_;
8753: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8754: }
8755:
8756: sub toggle_coursegroup_status {
8757: my ($cdom,$cnum,$group,$action) = @_;
8758: my ($from_namespace,$to_namespace);
8759: if ($action eq 'delete') {
8760: $from_namespace = 'coursegroups';
8761: $to_namespace = 'deleted_groups';
8762: } else {
8763: $from_namespace = 'deleted_groups';
8764: $to_namespace = 'coursegroups';
8765: }
8766: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8767: if (my $tmp = &error(%curr_group)) {
8768: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8769: return ('read error',$tmp);
8770: } else {
8771: my %savedsettings = %curr_group;
8772: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8773: my $deloutcome;
8774: if ($result eq 'ok') {
8775: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8776: } else {
8777: return ('write error',$result);
8778: }
8779: if ($deloutcome eq 'ok') {
8780: return 'ok';
8781: } else {
8782: return ('delete error',$deloutcome);
8783: }
8784: }
8785: }
8786:
8787: sub modify_group_roles {
8788: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8789: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8790: my $role = 'gr/'.&escape($userprivs);
8791: my ($uname,$udom) = split(/:/,$user);
8792: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8793: if ($result eq 'ok') {
8794: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8795: }
8796: return $result;
8797: }
8798:
8799: sub modify_coursegroup_membership {
8800: my ($cdom,$cnum,$membership) = @_;
8801: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8802: return $result;
8803: }
8804:
8805: sub get_active_groups {
8806: my ($udom,$uname,$cdom,$cnum) = @_;
8807: my $now = time;
8808: my %groups = ();
8809: foreach my $key (keys(%env)) {
8810: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8811: my ($start,$end) = split(/\./,$env{$key});
8812: if (($end!=0) && ($end<$now)) { next; }
8813: if (($start!=0) && ($start>$now)) { next; }
8814: if ($1 eq $cdom && $2 eq $cnum) {
8815: $groups{$3} = $env{$key} ;
8816: }
8817: }
8818: }
8819: return %groups;
8820: }
8821:
8822: sub get_group_membership {
8823: my ($cdom,$cnum,$group) = @_;
8824: return(&dump('groupmembership',$cdom,$cnum,$group));
8825: }
8826:
8827: sub get_users_groups {
8828: my ($udom,$uname,$courseid) = @_;
8829: my @usersgroups;
8830: my $cachetime=1800;
8831:
8832: my $hashid="$udom:$uname:$courseid";
8833: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8834: if (defined($cached)) {
8835: @usersgroups = split(/:/,$grouplist);
8836: } else {
8837: $grouplist = '';
8838: my $courseurl = &courseid_to_courseurl($courseid);
8839: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8840: my $access_end = $env{'course.'.$courseid.
8841: '.default_enrollment_end_date'};
8842: my $now = time;
8843: foreach my $key (keys(%roleshash)) {
8844: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8845: my $group = $1;
8846: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8847: my $start = $2;
8848: my $end = $1;
8849: if ($start == -1) { next; } # deleted from group
8850: if (($start!=0) && ($start>$now)) { next; }
8851: if (($end!=0) && ($end<$now)) {
8852: if ($access_end && $access_end < $now) {
8853: if ($access_end - $end < 86400) {
8854: push(@usersgroups,$group);
8855: }
8856: }
8857: next;
8858: }
8859: push(@usersgroups,$group);
8860: }
8861: }
8862: }
8863: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8864: $grouplist = join(':',@usersgroups);
8865: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8866: }
8867: return @usersgroups;
8868: }
8869:
8870: sub devalidate_getgroups_cache {
8871: my ($udom,$uname,$cdom,$cnum)=@_;
8872: my $courseid = $cdom.'_'.$cnum;
8873:
8874: my $hashid="$udom:$uname:$courseid";
8875: &devalidate_cache_new('getgroups',$hashid);
8876: }
8877:
8878: # ------------------------------------------------------------------ Plain Text
8879:
8880: sub plaintext {
8881: my ($short,$type,$cid,$forcedefault) = @_;
8882: if ($short =~ m{^cr/}) {
8883: return (split('/',$short))[-1];
8884: }
8885: if (!defined($cid)) {
8886: $cid = $env{'request.course.id'};
8887: }
8888: my %rolenames = (
8889: Course => 'std',
8890: Community => 'alt1',
8891: );
8892: if ($cid ne '') {
8893: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8894: unless ($forcedefault) {
8895: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8896: &Apache::lonlocal::mt_escape(\$roletext);
8897: return &Apache::lonlocal::mt($roletext);
8898: }
8899: }
8900: }
8901: if ((defined($type)) && (defined($rolenames{$type})) &&
8902: (defined($rolenames{$type})) &&
8903: (defined($prp{$short}{$rolenames{$type}}))) {
8904: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8905: } elsif ($cid ne '') {
8906: my $crstype = $env{'course.'.$cid.'.type'};
8907: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8908: (defined($prp{$short}{$rolenames{$crstype}}))) {
8909: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8910: }
8911: }
8912: return &Apache::lonlocal::mt($prp{$short}{'std'});
8913: }
8914:
8915: # ----------------------------------------------------------------- Assign Role
8916:
8917: sub assignrole {
8918: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8919: $context)=@_;
8920: my $mrole;
8921: if ($role =~ /^cr\//) {
8922: my $cwosec=$url;
8923: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8924: unless (&allowed('ccr',$cwosec)) {
8925: my $refused = 1;
8926: if ($context eq 'requestcourses') {
8927: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8928: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8929: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8930: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8931: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8932: if ($crsenv{'internal.courseowner'} eq
8933: $env{'user.name'}.':'.$env{'user.domain'}) {
8934: $refused = '';
8935: }
8936: }
8937: }
8938: }
8939: }
8940: if ($refused) {
8941: &logthis('Refused custom assignrole: '.
8942: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8943: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8944: return 'refused';
8945: }
8946: }
8947: $mrole='cr';
8948: } elsif ($role =~ /^gr\//) {
8949: my $cwogrp=$url;
8950: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8951: unless (&allowed('mdg',$cwogrp)) {
8952: &logthis('Refused group assignrole: '.
8953: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8954: $env{'user.name'}.' at '.$env{'user.domain'});
8955: return 'refused';
8956: }
8957: $mrole='gr';
8958: } else {
8959: my $cwosec=$url;
8960: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8961: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8962: my $refused;
8963: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8964: if (!(&allowed('c'.$role,$url))) {
8965: $refused = 1;
8966: }
8967: } else {
8968: $refused = 1;
8969: }
8970: if ($refused) {
8971: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8972: if (!$selfenroll && $context eq 'course') {
8973: my %crsenv;
8974: if ($role eq 'cc' || $role eq 'co') {
8975: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8976: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8977: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8978: if ($crsenv{'internal.courseowner'} eq
8979: $env{'user.name'}.':'.$env{'user.domain'}) {
8980: $refused = '';
8981: }
8982: }
8983: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8984: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8985: if ($crsenv{'internal.courseowner'} eq
8986: $env{'user.name'}.':'.$env{'user.domain'}) {
8987: $refused = '';
8988: }
8989: }
8990: }
8991: }
8992: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8993: $refused = '';
8994: } elsif ($context eq 'requestcourses') {
8995: my @possroles = ('st','ta','ep','in','cc','co');
8996: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8997: my $wrongcc;
8998: if ($cnum =~ /^$match_community$/) {
8999: $wrongcc = 1 if ($role eq 'cc');
9000: } else {
9001: $wrongcc = 1 if ($role eq 'co');
9002: }
9003: unless ($wrongcc) {
9004: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9005: if ($crsenv{'internal.courseowner'} eq
9006: $env{'user.name'}.':'.$env{'user.domain'}) {
9007: $refused = '';
9008: }
9009: }
9010: }
9011: } elsif ($context eq 'requestauthor') {
9012: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9013: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9014: if ($env{'environment.requestauthor'} eq 'automatic') {
9015: $refused = '';
9016: } else {
9017: my %domdefaults = &get_domain_defaults($udom);
9018: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9019: my $checkbystatus;
9020: if ($env{'user.adv'}) {
9021: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9022: if ($disposition eq 'automatic') {
9023: $refused = '';
9024: } elsif ($disposition eq '') {
9025: $checkbystatus = 1;
9026: }
9027: } else {
9028: $checkbystatus = 1;
9029: }
9030: if ($checkbystatus) {
9031: if ($env{'environment.inststatus'}) {
9032: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9033: foreach my $type (@inststatuses) {
9034: if (($type ne '') &&
9035: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9036: $refused = '';
9037: }
9038: }
9039: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9040: $refused = '';
9041: }
9042: }
9043: }
9044: }
9045: }
9046: }
9047: if ($refused) {
9048: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9049: ' '.$role.' '.$end.' '.$start.' by '.
9050: $env{'user.name'}.' at '.$env{'user.domain'});
9051: return 'refused';
9052: }
9053: }
9054: } elsif ($role eq 'au') {
9055: if ($url ne '/'.$udom.'/') {
9056: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9057: ' to assign author role for '.$uname.':'.$udom.
9058: ' in domain: '.$url.' refused (wrong domain).');
9059: return 'refused';
9060: }
9061: }
9062: $mrole=$role;
9063: }
9064: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9065: "$udom:$uname:$url".'_'."$mrole=$role";
9066: if ($end) { $command.='_'.$end; }
9067: if ($start) {
9068: if ($end) {
9069: $command.='_'.$start;
9070: } else {
9071: $command.='_0_'.$start;
9072: }
9073: }
9074: my $origstart = $start;
9075: my $origend = $end;
9076: my $delflag;
9077: # actually delete
9078: if ($deleteflag) {
9079: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9080: # modify command to delete the role
9081: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9082: "$udom:$uname:$url".'_'."$mrole";
9083: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9084: # set start and finish to negative values for userrolelog
9085: $start=-1;
9086: $end=-1;
9087: $delflag = 1;
9088: }
9089: }
9090: # send command
9091: my $answer=&reply($command,&homeserver($uname,$udom));
9092: # log new user role if status is ok
9093: if ($answer eq 'ok') {
9094: &userrolelog($role,$uname,$udom,$url,$start,$end);
9095: if (($role eq 'cc') || ($role eq 'in') ||
9096: ($role eq 'ep') || ($role eq 'ad') ||
9097: ($role eq 'ta') || ($role eq 'st') ||
9098: ($role=~/^cr/) || ($role eq 'gr') ||
9099: ($role eq 'co')) {
9100: # for course roles, perform group memberships changes triggered by role change.
9101: unless ($role =~ /^gr/) {
9102: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9103: $origstart,$selfenroll,$context);
9104: }
9105: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9106: $selfenroll,$context);
9107: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9108: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9109: ($role eq 'da')) {
9110: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9111: $context);
9112: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9113: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9114: $context);
9115: }
9116: if ($role eq 'cc') {
9117: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9118: }
9119: }
9120: return $answer;
9121: }
9122:
9123: sub autoupdate_coowners {
9124: my ($url,$end,$start,$uname,$udom) = @_;
9125: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9126: if (($cdom ne '') && ($cnum ne '')) {
9127: my $now = time;
9128: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9129: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9130: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9131: my $instcode = $coursehash{'internal.coursecode'};
9132: if ($instcode ne '') {
9133: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9134: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9135: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9136: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9137: if ($result eq 'valid') {
9138: if ($coursehash{'internal.co-owners'}) {
9139: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9140: push(@newcoowners,$coowner);
9141: }
9142: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9143: push(@newcoowners,$uname.':'.$udom);
9144: }
9145: @newcoowners = sort(@newcoowners);
9146: } else {
9147: push(@newcoowners,$uname.':'.$udom);
9148: }
9149: } else {
9150: if ($coursehash{'internal.co-owners'}) {
9151: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9152: unless ($coowner eq $uname.':'.$udom) {
9153: push(@newcoowners,$coowner);
9154: }
9155: }
9156: unless (@newcoowners > 0) {
9157: $delcoowners = 1;
9158: $coowners = '';
9159: }
9160: }
9161: }
9162: if (@newcoowners || $delcoowners) {
9163: &store_coowners($cdom,$cnum,$coursehash{'home'},
9164: $delcoowners,@newcoowners);
9165: }
9166: }
9167: }
9168: }
9169: }
9170: }
9171: }
9172:
9173: sub store_coowners {
9174: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9175: my $cid = $cdom.'_'.$cnum;
9176: my ($coowners,$delresult,$putresult);
9177: if (@newcoowners) {
9178: $coowners = join(',',@newcoowners);
9179: my %coownershash = (
9180: 'internal.co-owners' => $coowners,
9181: );
9182: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9183: if ($putresult eq 'ok') {
9184: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9185: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9186: }
9187: }
9188: }
9189: if ($delcoowners) {
9190: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9191: if ($delresult eq 'ok') {
9192: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9193: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9194: }
9195: }
9196: }
9197: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9198: my %crsinfo =
9199: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9200: if (ref($crsinfo{$cid}) eq 'HASH') {
9201: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9202: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9203: }
9204: }
9205: }
9206:
9207: # -------------------------------------------------- Modify user authentication
9208: # Overrides without validation
9209:
9210: sub modifyuserauth {
9211: my ($udom,$uname,$umode,$upass)=@_;
9212: my $uhome=&homeserver($uname,$udom);
9213: unless (&allowed('mau',$udom)) { return 'refused'; }
9214: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9215: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9216: ' in domain '.$env{'request.role.domain'});
9217: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9218: &escape($upass),$uhome);
9219: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9220: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9221: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9222: &log($udom,,$uname,$uhome,
9223: 'Authentication changed by '.$env{'user.domain'}.', '.
9224: $env{'user.name'}.', '.$umode.
9225: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9226: unless ($reply eq 'ok') {
9227: &logthis('Authentication mode error: '.$reply);
9228: return 'error: '.$reply;
9229: }
9230: return 'ok';
9231: }
9232:
9233: # --------------------------------------------------------------- Modify a user
9234:
9235: sub modifyuser {
9236: my ($udom, $uname, $uid,
9237: $umode, $upass, $first,
9238: $middle, $last, $gene,
9239: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9240: $udom= &LONCAPA::clean_domain($udom);
9241: $uname=&LONCAPA::clean_username($uname);
9242: my $showcandelete = 'none';
9243: if (ref($candelete) eq 'ARRAY') {
9244: if (@{$candelete} > 0) {
9245: $showcandelete = join(', ',@{$candelete});
9246: }
9247: }
9248: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9249: $umode.', '.$first.', '.$middle.', '.
9250: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9251: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9252: ' desiredhome not specified').
9253: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9254: ' in domain '.$env{'request.role.domain'});
9255: my $uhome=&homeserver($uname,$udom,'true');
9256: my $newuser;
9257: if ($uhome eq 'no_host') {
9258: $newuser = 1;
9259: }
9260: # ----------------------------------------------------------------- Create User
9261: if (($uhome eq 'no_host') &&
9262: (($umode && $upass) || ($umode eq 'localauth'))) {
9263: my $unhome='';
9264: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9265: $unhome = $desiredhome;
9266: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9267: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9268: } else { # load balancing routine for determining $unhome
9269: my $loadm=10000000;
9270: my %servers = &get_servers($udom,'library');
9271: foreach my $tryserver (keys(%servers)) {
9272: my $answer=reply('load',$tryserver);
9273: if (($answer=~/\d+/) && ($answer<$loadm)) {
9274: $loadm=$answer;
9275: $unhome=$tryserver;
9276: }
9277: }
9278: }
9279: if (($unhome eq '') || ($unhome eq 'no_host')) {
9280: return 'error: unable to find a home server for '.$uname.
9281: ' in domain '.$udom;
9282: }
9283: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9284: &escape($upass),$unhome);
9285: unless ($reply eq 'ok') {
9286: return 'error: '.$reply;
9287: }
9288: $uhome=&homeserver($uname,$udom,'true');
9289: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9290: return 'error: unable verify users home machine.';
9291: }
9292: } # End of creation of new user
9293: # ---------------------------------------------------------------------- Add ID
9294: if ($uid) {
9295: $uid=~tr/A-Z/a-z/;
9296: my %uidhash=&idrget($udom,$uname);
9297: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9298: && (!$forceid)) {
9299: unless ($uid eq $uidhash{$uname}) {
9300: return 'error: user id "'.$uid.'" does not match '.
9301: 'current user id "'.$uidhash{$uname}.'".';
9302: }
9303: } else {
9304: &idput($udom,($uname => $uid));
9305: }
9306: }
9307: # -------------------------------------------------------------- Add names, etc
9308: my @tmp=&get('environment',
9309: ['firstname','middlename','lastname','generation','id',
9310: 'permanentemail','inststatus'],
9311: $udom,$uname);
9312: my (%names,%oldnames);
9313: if ($tmp[0] =~ m/^error:.*/) {
9314: %names=();
9315: } else {
9316: %names = @tmp;
9317: %oldnames = %names;
9318: }
9319: #
9320: # If name, email and/or uid are blank (e.g., because an uploaded file
9321: # of users did not contain them), do not overwrite existing values
9322: # unless field is in $candelete array ref.
9323: #
9324:
9325: my @fields = ('firstname','middlename','lastname','generation',
9326: 'permanentemail','id');
9327: my %newvalues;
9328: if (ref($candelete) eq 'ARRAY') {
9329: foreach my $field (@fields) {
9330: if (grep(/^\Q$field\E$/,@{$candelete})) {
9331: if ($field eq 'firstname') {
9332: $names{$field} = $first;
9333: } elsif ($field eq 'middlename') {
9334: $names{$field} = $middle;
9335: } elsif ($field eq 'lastname') {
9336: $names{$field} = $last;
9337: } elsif ($field eq 'generation') {
9338: $names{$field} = $gene;
9339: } elsif ($field eq 'permanentemail') {
9340: $names{$field} = $email;
9341: } elsif ($field eq 'id') {
9342: $names{$field} = $uid;
9343: }
9344: }
9345: }
9346: }
9347: if ($first) { $names{'firstname'} = $first; }
9348: if (defined($middle)) { $names{'middlename'} = $middle; }
9349: if ($last) { $names{'lastname'} = $last; }
9350: if (defined($gene)) { $names{'generation'} = $gene; }
9351: if ($email) {
9352: $email=~s/[^\w\@\.\-\,]//gs;
9353: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9354: }
9355: if ($uid) { $names{'id'} = $uid; }
9356: if (defined($inststatus)) {
9357: $names{'inststatus'} = '';
9358: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9359: if (ref($usertypes) eq 'HASH') {
9360: my @okstatuses;
9361: foreach my $item (split(/:/,$inststatus)) {
9362: if (defined($usertypes->{$item})) {
9363: push(@okstatuses,$item);
9364: }
9365: }
9366: if (@okstatuses) {
9367: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9368: }
9369: }
9370: }
9371: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9372: $umode.', '.$first.', '.$middle.', '.
9373: $last.', '.$gene.', '.$email.', '.$inststatus;
9374: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9375: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9376: } else {
9377: $logmsg .= ' during self creation';
9378: }
9379: my $changed;
9380: if ($newuser) {
9381: $changed = 1;
9382: } else {
9383: foreach my $field (@fields) {
9384: if ($names{$field} ne $oldnames{$field}) {
9385: $changed = 1;
9386: last;
9387: }
9388: }
9389: }
9390: unless ($changed) {
9391: $logmsg = 'No changes in user information needed for: '.$logmsg;
9392: &logthis($logmsg);
9393: return 'ok';
9394: }
9395: my $reply = &put('environment', \%names, $udom,$uname);
9396: if ($reply ne 'ok') {
9397: return 'error: '.$reply;
9398: }
9399: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9400: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9401: }
9402: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9403: &devalidate_cache_new('namescache',$uname.':'.$udom);
9404: $logmsg = 'Success modifying user '.$logmsg;
9405: &logthis($logmsg);
9406: return 'ok';
9407: }
9408:
9409: # -------------------------------------------------------------- Modify student
9410:
9411: sub modifystudent {
9412: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9413: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9414: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9415: if (!$cid) {
9416: unless ($cid=$env{'request.course.id'}) {
9417: return 'not_in_class';
9418: }
9419: }
9420: # --------------------------------------------------------------- Make the user
9421: my $reply=&modifyuser
9422: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9423: $desiredhome,$email,$inststatus);
9424: unless ($reply eq 'ok') { return $reply; }
9425: # This will cause &modify_student_enrollment to get the uid from the
9426: # student's environment
9427: $uid = undef if (!$forceid);
9428: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9429: $gene,$usec,$end,$start,$type,$locktype,
9430: $cid,$selfenroll,$context,$credits,$instsec);
9431: return $reply;
9432: }
9433:
9434: sub modify_student_enrollment {
9435: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9436: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9437: my ($cdom,$cnum,$chome);
9438: if (!$cid) {
9439: unless ($cid=$env{'request.course.id'}) {
9440: return 'not_in_class';
9441: }
9442: $cdom=$env{'course.'.$cid.'.domain'};
9443: $cnum=$env{'course.'.$cid.'.num'};
9444: } else {
9445: ($cdom,$cnum)=split(/_/,$cid);
9446: }
9447: $chome=$env{'course.'.$cid.'.home'};
9448: if (!$chome) {
9449: $chome=&homeserver($cnum,$cdom);
9450: }
9451: if (!$chome) { return 'unknown_course'; }
9452: # Make sure the user exists
9453: my $uhome=&homeserver($uname,$udom);
9454: if (($uhome eq '') || ($uhome eq 'no_host')) {
9455: return 'error: no such user';
9456: }
9457: # Get student data if we were not given enough information
9458: if (!defined($first) || $first eq '' ||
9459: !defined($last) || $last eq '' ||
9460: !defined($uid) || $uid eq '' ||
9461: !defined($middle) || $middle eq '' ||
9462: !defined($gene) || $gene eq '') {
9463: # They did not supply us with enough data to enroll the student, so
9464: # we need to pick up more information.
9465: my %tmp = &get('environment',
9466: ['firstname','middlename','lastname', 'generation','id']
9467: ,$udom,$uname);
9468:
9469: #foreach my $key (keys(%tmp)) {
9470: # &logthis("key $key = ".$tmp{$key});
9471: #}
9472: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9473: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9474: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9475: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9476: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9477: }
9478: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9479: my $user = "$uname:$udom";
9480: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9481: my $reply=cput('classlist',
9482: {$user =>
9483: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9484: $cdom,$cnum);
9485: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9486: &devalidate_getsection_cache($udom,$uname,$cid);
9487: } else {
9488: return 'error: '.$reply;
9489: }
9490: # Add student role to user
9491: my $uurl='/'.$cid;
9492: $uurl=~s/\_/\//g;
9493: if ($usec) {
9494: $uurl.='/'.$usec;
9495: }
9496: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9497: $selfenroll,$context);
9498: if ($result ne 'ok') {
9499: if ($old_entry{$user} ne '') {
9500: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9501: } else {
9502: $reply = &del('classlist',[$user],$cdom,$cnum);
9503: }
9504: }
9505: return $result;
9506: }
9507:
9508: sub format_name {
9509: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9510: my $name;
9511: if ($first ne 'lastname') {
9512: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9513: } else {
9514: if ($lastname=~/\S/) {
9515: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9516: $name=~s/\s+,/,/;
9517: } else {
9518: $name.= $firstname.' '.$middlename.' '.$generation;
9519: }
9520: }
9521: $name=~s/^\s+//;
9522: $name=~s/\s+$//;
9523: $name=~s/\s+/ /g;
9524: return $name;
9525: }
9526:
9527: # ------------------------------------------------- Write to course preferences
9528:
9529: sub writecoursepref {
9530: my ($courseid,%prefs)=@_;
9531: $courseid=~s/^\///;
9532: $courseid=~s/\_/\//g;
9533: my ($cdomain,$cnum)=split(/\//,$courseid);
9534: my $chome=homeserver($cnum,$cdomain);
9535: if (($chome eq '') || ($chome eq 'no_host')) {
9536: return 'error: no such course';
9537: }
9538: my $cstring='';
9539: foreach my $pref (keys(%prefs)) {
9540: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9541: }
9542: $cstring=~s/\&$//;
9543: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9544: }
9545:
9546: # ---------------------------------------------------------- Make/modify course
9547:
9548: sub createcourse {
9549: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9550: $course_owner,$crstype,$cnum,$context,$category)=@_;
9551: $url=&declutter($url);
9552: my $cid='';
9553: if ($context eq 'requestcourses') {
9554: my $can_create = 0;
9555: my ($ownername,$ownerdom) = split(':',$course_owner);
9556: if ($udom eq $ownerdom) {
9557: if (&usertools_access($ownername,$ownerdom,$category,undef,
9558: $context)) {
9559: $can_create = 1;
9560: }
9561: } else {
9562: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9563: $category);
9564: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9565: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9566: if (@curr > 0) {
9567: my @options = qw(approval validate autolimit);
9568: my $optregex = join('|',@options);
9569: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9570: $can_create = 1;
9571: }
9572: }
9573: }
9574: }
9575: if ($can_create) {
9576: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9577: unless (&allowed('ccc',$udom)) {
9578: return 'refused';
9579: }
9580: }
9581: } else {
9582: return 'refused';
9583: }
9584: } elsif (!&allowed('ccc',$udom)) {
9585: return 'refused';
9586: }
9587: # --------------------------------------------------------------- Get Unique ID
9588: my $uname;
9589: if ($cnum =~ /^$match_courseid$/) {
9590: my $chome=&homeserver($cnum,$udom,'true');
9591: if (($chome eq '') || ($chome eq 'no_host')) {
9592: $uname = $cnum;
9593: } else {
9594: $uname = &generate_coursenum($udom,$crstype);
9595: }
9596: } else {
9597: $uname = &generate_coursenum($udom,$crstype);
9598: }
9599: return $uname if ($uname =~ /^error/);
9600: # -------------------------------------------------- Check supplied server name
9601: if (!defined($course_server)) {
9602: if (defined(&domain($udom,'primary'))) {
9603: $course_server = &domain($udom,'primary');
9604: } else {
9605: $course_server = $env{'user.home'};
9606: }
9607: }
9608: my %host_servers =
9609: &Apache::lonnet::get_servers($udom,'library');
9610: unless ($host_servers{$course_server}) {
9611: return 'error: invalid home server for course: '.$course_server;
9612: }
9613: # ------------------------------------------------------------- Make the course
9614: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9615: $course_server);
9616: unless ($reply eq 'ok') { return 'error: '.$reply; }
9617: my $uhome=&homeserver($uname,$udom,'true');
9618: if (($uhome eq '') || ($uhome eq 'no_host')) {
9619: return 'error: no such course';
9620: }
9621: # ----------------------------------------------------------------- Course made
9622: # log existence
9623: my $now = time;
9624: my $newcourse = {
9625: $udom.'_'.$uname => {
9626: description => $description,
9627: inst_code => $inst_code,
9628: owner => $course_owner,
9629: type => $crstype,
9630: creator => $env{'user.name'}.':'.
9631: $env{'user.domain'},
9632: created => $now,
9633: context => $context,
9634: },
9635: };
9636: &courseidput($udom,$newcourse,$uhome,'notime');
9637: # set toplevel url
9638: my $topurl=$url;
9639: unless ($nonstandard) {
9640: # ------------------------------------------ For standard courses, make top url
9641: my $mapurl=&clutter($url);
9642: if ($mapurl eq '/res/') { $mapurl=''; }
9643: $env{'form.initmap'}=(<<ENDINITMAP);
9644: <map>
9645: <resource id="1" type="start"></resource>
9646: <resource id="2" src="$mapurl"></resource>
9647: <resource id="3" type="finish"></resource>
9648: <link index="1" from="1" to="2"></link>
9649: <link index="2" from="2" to="3"></link>
9650: </map>
9651: ENDINITMAP
9652: $topurl=&declutter(
9653: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
9654: );
9655: }
9656: # ----------------------------------------------------------- Write preferences
9657: &writecoursepref($udom.'_'.$uname,
9658: ('description' => $description,
9659: 'url' => $topurl,
9660: 'internal.creator' => $env{'user.name'}.':'.
9661: $env{'user.domain'},
9662: 'internal.created' => $now,
9663: 'internal.creationcontext' => $context)
9664: );
9665: return '/'.$udom.'/'.$uname;
9666: }
9667:
9668: # ------------------------------------------------------------------- Create ID
9669: sub generate_coursenum {
9670: my ($udom,$crstype) = @_;
9671: my $domdesc = &domain($udom);
9672: return 'error: invalid domain' if ($domdesc eq '');
9673: my $first;
9674: if ($crstype eq 'Community') {
9675: $first = '0';
9676: } else {
9677: $first = int(1+rand(9));
9678: }
9679: my $uname=$first.
9680: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9681: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9682: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9683: # ----------------------------------------------- Make sure that does not exist
9684: my $uhome=&homeserver($uname,$udom,'true');
9685: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9686: if ($crstype eq 'Community') {
9687: $first = '0';
9688: } else {
9689: $first = int(1+rand(9));
9690: }
9691: $uname=$first.
9692: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9693: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9694: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9695: $uhome=&homeserver($uname,$udom,'true');
9696: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9697: return 'error: unable to generate unique course-ID';
9698: }
9699: }
9700: return $uname;
9701: }
9702:
9703: sub is_course {
9704: my ($cdom, $cnum) = scalar(@_) == 1 ?
9705: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9706:
9707: return unless $cdom and $cnum;
9708:
9709: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9710: '.');
9711:
9712: return unless(exists($courses{$cdom.'_'.$cnum}));
9713: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9714: }
9715:
9716: sub store_userdata {
9717: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9718: my $result;
9719: if ($datakey ne '') {
9720: if (ref($storehash) eq 'HASH') {
9721: if ($udom eq '' || $uname eq '') {
9722: $udom = $env{'user.domain'};
9723: $uname = $env{'user.name'};
9724: }
9725: my $uhome=&homeserver($uname,$udom);
9726: if (($uhome eq '') || ($uhome eq 'no_host')) {
9727: $result = 'error: no_host';
9728: } else {
9729: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
9730: $storehash->{'host'} = $perlvar{'lonHostID'};
9731:
9732: my $namevalue='';
9733: foreach my $key (keys(%{$storehash})) {
9734: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
9735: }
9736: $namevalue=~s/\&$//;
9737: unless ($namespace eq 'courserequests') {
9738: $datakey = &escape($datakey);
9739: }
9740: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
9741: $namevalue,$uhome);
9742: }
9743: } else {
9744: $result = 'error: data to store was not a hash reference';
9745: }
9746: } else {
9747: $result= 'error: invalid requestkey';
9748: }
9749: return $result;
9750: }
9751:
9752: # ---------------------------------------------------------- Assign Custom Role
9753:
9754: sub assigncustomrole {
9755: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9756: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9757: $end,$start,$deleteflag,$selfenroll,$context);
9758: }
9759:
9760: # ----------------------------------------------------------------- Revoke Role
9761:
9762: sub revokerole {
9763: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9764: my $now=time;
9765: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9766: }
9767:
9768: # ---------------------------------------------------------- Revoke Custom Role
9769:
9770: sub revokecustomrole {
9771: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9772: my $now=time;
9773: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9774: $deleteflag,$selfenroll,$context);
9775: }
9776:
9777: # ------------------------------------------------------------ Disk usage
9778: sub diskusage {
9779: my ($udom,$uname,$directorypath,$getpropath)=@_;
9780: $directorypath =~ s/\/$//;
9781: my $listing=&reply('du2:'.&escape($directorypath).':'
9782: .&escape($getpropath).':'.&escape($uname).':'
9783: .&escape($udom),homeserver($uname,$udom));
9784: if ($listing eq 'unknown_cmd') {
9785: if ($getpropath) {
9786: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9787: }
9788: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9789: }
9790: return $listing;
9791: }
9792:
9793: sub is_locked {
9794: my ($file_name, $domain, $user, $which) = @_;
9795: my @check;
9796: my $is_locked;
9797: push (@check,$file_name);
9798: my %locked = &get('file_permissions',\@check,
9799: $env{'user.domain'},$env{'user.name'});
9800: my ($tmp)=keys(%locked);
9801: if ($tmp=~/^error:/) { undef(%locked); }
9802:
9803: if (ref($locked{$file_name}) eq 'ARRAY') {
9804: $is_locked = 'false';
9805: foreach my $entry (@{$locked{$file_name}}) {
9806: if (ref($entry) eq 'ARRAY') {
9807: $is_locked = 'true';
9808: if (ref($which) eq 'ARRAY') {
9809: push(@{$which},$entry);
9810: } else {
9811: last;
9812: }
9813: }
9814: }
9815: } else {
9816: $is_locked = 'false';
9817: }
9818: return $is_locked;
9819: }
9820:
9821: sub declutter_portfile {
9822: my ($file) = @_;
9823: $file =~ s{^(/portfolio/|portfolio/)}{/};
9824: return $file;
9825: }
9826:
9827: # ------------------------------------------------------------- Mark as Read Only
9828:
9829: sub mark_as_readonly {
9830: my ($domain,$user,$files,$what) = @_;
9831: my %current_permissions = &dump('file_permissions',$domain,$user);
9832: my ($tmp)=keys(%current_permissions);
9833: if ($tmp=~/^error:/) { undef(%current_permissions); }
9834: foreach my $file (@{$files}) {
9835: $file = &declutter_portfile($file);
9836: push(@{$current_permissions{$file}},$what);
9837: }
9838: &put('file_permissions',\%current_permissions,$domain,$user);
9839: return;
9840: }
9841:
9842: # ------------------------------------------------------------Save Selected Files
9843:
9844: sub save_selected_files {
9845: my ($user, $path, @files) = @_;
9846: my $filename = $user."savedfiles";
9847: my @other_files = &files_not_in_path($user, $path);
9848: open (OUT,'>',LONCAPA::tempdir().$filename);
9849: foreach my $file (@files) {
9850: print (OUT $env{'form.currentpath'}.$file."\n");
9851: }
9852: foreach my $file (@other_files) {
9853: print (OUT $file."\n");
9854: }
9855: close (OUT);
9856: return 'ok';
9857: }
9858:
9859: sub clear_selected_files {
9860: my ($user) = @_;
9861: my $filename = $user."savedfiles";
9862: open (OUT,'>',LONCAPA::tempdir().$filename);
9863: print (OUT undef);
9864: close (OUT);
9865: return ("ok");
9866: }
9867:
9868: sub files_in_path {
9869: my ($user, $path) = @_;
9870: my $filename = $user."savedfiles";
9871: my %return_files;
9872: open (IN,'<',LONCAPA::tempdir().$filename);
9873: while (my $line_in = <IN>) {
9874: chomp ($line_in);
9875: my @paths_and_file = split (m!/!, $line_in);
9876: my $file_part = pop (@paths_and_file);
9877: my $path_part = join ('/', @paths_and_file);
9878: $path_part.='/';
9879: my $path_and_file = $path_part.$file_part;
9880: if ($path_part eq $path) {
9881: $return_files{$file_part}= 'selected';
9882: }
9883: }
9884: close (IN);
9885: return (\%return_files);
9886: }
9887:
9888: # called in portfolio select mode, to show files selected NOT in current directory
9889: sub files_not_in_path {
9890: my ($user, $path) = @_;
9891: my $filename = $user."savedfiles";
9892: my @return_files;
9893: my $path_part;
9894: open(IN,'<',LONCAPA::tempdir().$filename);
9895: while (my $line = <IN>) {
9896: #ok, I know it's clunky, but I want it to work
9897: my @paths_and_file = split(m|/|, $line);
9898: my $file_part = pop(@paths_and_file);
9899: chomp($file_part);
9900: my $path_part = join('/', @paths_and_file);
9901: $path_part .= '/';
9902: my $path_and_file = $path_part.$file_part;
9903: if ($path_part ne $path) {
9904: push(@return_files, ($path_and_file));
9905: }
9906: }
9907: close(OUT);
9908: return (@return_files);
9909: }
9910:
9911: #----------------------------------------------Get portfolio file permissions
9912:
9913: sub get_portfile_permissions {
9914: my ($domain,$user) = @_;
9915: my %current_permissions = &dump('file_permissions',$domain,$user);
9916: my ($tmp)=keys(%current_permissions);
9917: if ($tmp=~/^error:/) { undef(%current_permissions); }
9918: return \%current_permissions;
9919: }
9920:
9921: #---------------------------------------------Get portfolio file access controls
9922:
9923: sub get_access_controls {
9924: my ($current_permissions,$group,$file) = @_;
9925: my %access;
9926: my $real_file = $file;
9927: $file =~ s/\.meta$//;
9928: if (defined($file)) {
9929: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9930: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9931: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9932: }
9933: }
9934: } else {
9935: foreach my $key (keys(%{$current_permissions})) {
9936: if ($key =~ /\0accesscontrol$/) {
9937: if (defined($group)) {
9938: if ($key !~ m-^\Q$group\E/-) {
9939: next;
9940: }
9941: }
9942: my ($fullpath) = split(/\0/,$key);
9943: if (ref($$current_permissions{$key}) eq 'HASH') {
9944: foreach my $control (keys(%{$$current_permissions{$key}})) {
9945: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9946: }
9947: }
9948: }
9949: }
9950: }
9951: return %access;
9952: }
9953:
9954: sub modify_access_controls {
9955: my ($file_name,$changes,$domain,$user)=@_;
9956: my ($outcome,$deloutcome);
9957: my %store_permissions;
9958: my %new_values;
9959: my %new_control;
9960: my %translation;
9961: my @deletions = ();
9962: my $now = time;
9963: if (exists($$changes{'activate'})) {
9964: if (ref($$changes{'activate'}) eq 'HASH') {
9965: my @newitems = sort(keys(%{$$changes{'activate'}}));
9966: my $numnew = scalar(@newitems);
9967: for (my $i=0; $i<$numnew; $i++) {
9968: my $newkey = $newitems[$i];
9969: my $newid = &Apache::loncommon::get_cgi_id();
9970: if ($newkey =~ /^\d+:/) {
9971: $newkey =~ s/^(\d+)/$newid/;
9972: $translation{$1} = $newid;
9973: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9974: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9975: $translation{$1} = $newid;
9976: }
9977: $new_values{$file_name."\0".$newkey} =
9978: $$changes{'activate'}{$newitems[$i]};
9979: $new_control{$newkey} = $now;
9980: }
9981: }
9982: }
9983: my %todelete;
9984: my %changed_items;
9985: foreach my $action ('delete','update') {
9986: if (exists($$changes{$action})) {
9987: if (ref($$changes{$action}) eq 'HASH') {
9988: foreach my $key (keys(%{$$changes{$action}})) {
9989: my ($itemnum) = ($key =~ /^([^:]+):/);
9990: if ($action eq 'delete') {
9991: $todelete{$itemnum} = 1;
9992: } else {
9993: $changed_items{$itemnum} = $key;
9994: }
9995: }
9996: }
9997: }
9998: }
9999: # get lock on access controls for file.
10000: my $lockhash = {
10001: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10002: ':'.$env{'user.domain'},
10003: };
10004: my $tries = 0;
10005: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10006:
10007: while (($gotlock ne 'ok') && $tries < 10) {
10008: $tries ++;
10009: sleep(0.1);
10010: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10011: }
10012: if ($gotlock eq 'ok') {
10013: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10014: my ($tmp)=keys(%curr_permissions);
10015: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10016: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10017: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10018: if (ref($curr_controls) eq 'HASH') {
10019: foreach my $control_item (keys(%{$curr_controls})) {
10020: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10021: if (defined($todelete{$itemnum})) {
10022: push(@deletions,$file_name."\0".$control_item);
10023: } else {
10024: if (defined($changed_items{$itemnum})) {
10025: $new_control{$changed_items{$itemnum}} = $now;
10026: push(@deletions,$file_name."\0".$control_item);
10027: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10028: } else {
10029: $new_control{$control_item} = $$curr_controls{$control_item};
10030: }
10031: }
10032: }
10033: }
10034: }
10035: my ($group);
10036: if (&is_course($domain,$user)) {
10037: ($group,my $file) = split(/\//,$file_name,2);
10038: }
10039: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10040: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10041: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10042: # remove lock
10043: my @del_lock = ($file_name."\0".'locked_access_records');
10044: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10045: my $sqlresult =
10046: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10047: $group);
10048: } else {
10049: $outcome = "error: could not obtain lockfile\n";
10050: }
10051: return ($outcome,$deloutcome,\%new_values,\%translation);
10052: }
10053:
10054: sub make_public_indefinitely {
10055: my ($requrl) = @_;
10056: my $now = time;
10057: my $action = 'activate';
10058: my $aclnum = 0;
10059: if (&is_portfolio_url($requrl)) {
10060: my (undef,$udom,$unum,$file_name,$group) =
10061: &parse_portfolio_url($requrl);
10062: my $current_perms = &get_portfile_permissions($udom,$unum);
10063: my %access_controls = &get_access_controls($current_perms,
10064: $group,$file_name);
10065: foreach my $key (keys(%{$access_controls{$file_name}})) {
10066: my ($num,$scope,$end,$start) =
10067: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10068: if ($scope eq 'public') {
10069: if ($start <= $now && $end == 0) {
10070: $action = 'none';
10071: } else {
10072: $action = 'update';
10073: $aclnum = $num;
10074: }
10075: last;
10076: }
10077: }
10078: if ($action eq 'none') {
10079: return 'ok';
10080: } else {
10081: my %changes;
10082: my $newend = 0;
10083: my $newstart = $now;
10084: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
10085: $changes{$action}{$newkey} = {
10086: type => 'public',
10087: time => {
10088: start => $newstart,
10089: end => $newend,
10090: },
10091: };
10092: my ($outcome,$deloutcome,$new_values,$translation) =
10093: &modify_access_controls($file_name,\%changes,$udom,$unum);
10094: return $outcome;
10095: }
10096: } else {
10097: return 'invalid';
10098: }
10099: }
10100:
10101: #------------------------------------------------------Get Marked as Read Only
10102:
10103: sub get_marked_as_readonly {
10104: my ($domain,$user,$what,$group) = @_;
10105: my $current_permissions = &get_portfile_permissions($domain,$user);
10106: my @readonly_files;
10107: my $cmp1=$what;
10108: if (ref($what)) { $cmp1=join('',@{$what}) };
10109: while (my ($file_name,$value) = each(%{$current_permissions})) {
10110: if (defined($group)) {
10111: if ($file_name !~ m-^\Q$group\E/-) {
10112: next;
10113: }
10114: }
10115: if (ref($value) eq "ARRAY"){
10116: foreach my $stored_what (@{$value}) {
10117: my $cmp2=$stored_what;
10118: if (ref($stored_what) eq 'ARRAY') {
10119: $cmp2=join('',@{$stored_what});
10120: }
10121: if ($cmp1 eq $cmp2) {
10122: push(@readonly_files, $file_name);
10123: last;
10124: } elsif (!defined($what)) {
10125: push(@readonly_files, $file_name);
10126: last;
10127: }
10128: }
10129: }
10130: }
10131: return @readonly_files;
10132: }
10133: #-----------------------------------------------------------Get Marked as Read Only Hash
10134:
10135: sub get_marked_as_readonly_hash {
10136: my ($current_permissions,$group,$what) = @_;
10137: my %readonly_files;
10138: while (my ($file_name,$value) = each(%{$current_permissions})) {
10139: if (defined($group)) {
10140: if ($file_name !~ m-^\Q$group\E/-) {
10141: next;
10142: }
10143: }
10144: if (ref($value) eq "ARRAY"){
10145: foreach my $stored_what (@{$value}) {
10146: if (ref($stored_what) eq 'ARRAY') {
10147: foreach my $lock_descriptor(@{$stored_what}) {
10148: if ($lock_descriptor eq 'graded') {
10149: $readonly_files{$file_name} = 'graded';
10150: } elsif ($lock_descriptor eq 'handback') {
10151: $readonly_files{$file_name} = 'handback';
10152: } else {
10153: if (!exists($readonly_files{$file_name})) {
10154: $readonly_files{$file_name} = 'locked';
10155: }
10156: }
10157: }
10158: }
10159: }
10160: }
10161: }
10162: return %readonly_files;
10163: }
10164: # ------------------------------------------------------------ Unmark as Read Only
10165:
10166: sub unmark_as_readonly {
10167: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10168: # for portfolio submissions, $what contains [$symb,$crsid]
10169: my ($domain,$user,$what,$file_name,$group) = @_;
10170: $file_name = &declutter_portfile($file_name);
10171: my $symb_crs = $what;
10172: if (ref($what)) { $symb_crs=join('',@$what); }
10173: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10174: my ($tmp)=keys(%current_permissions);
10175: if ($tmp=~/^error:/) { undef(%current_permissions); }
10176: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10177: foreach my $file (@readonly_files) {
10178: my $clean_file = &declutter_portfile($file);
10179: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10180: my $current_locks = $current_permissions{$file};
10181: my @new_locks;
10182: my @del_keys;
10183: if (ref($current_locks) eq "ARRAY"){
10184: foreach my $locker (@{$current_locks}) {
10185: my $compare=$locker;
10186: if (ref($locker) eq 'ARRAY') {
10187: $compare=join('',@{$locker});
10188: if ($compare ne $symb_crs) {
10189: push(@new_locks, $locker);
10190: }
10191: }
10192: }
10193: if (scalar(@new_locks) > 0) {
10194: $current_permissions{$file} = \@new_locks;
10195: } else {
10196: push(@del_keys, $file);
10197: &del('file_permissions',\@del_keys, $domain, $user);
10198: delete($current_permissions{$file});
10199: }
10200: }
10201: }
10202: &put('file_permissions',\%current_permissions,$domain,$user);
10203: return;
10204: }
10205:
10206: # ------------------------------------------------------------ Directory lister
10207:
10208: sub dirlist {
10209: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10210: $uri=~s/^\///;
10211: $uri=~s/\/$//;
10212: my ($udom, $uname);
10213: if ($getuserdir) {
10214: $udom = $userdomain;
10215: $uname = $username;
10216: } else {
10217: (undef,$udom,$uname)=split(/\//,$uri);
10218: if(defined($userdomain)) {
10219: $udom = $userdomain;
10220: }
10221: if(defined($username)) {
10222: $uname = $username;
10223: }
10224: }
10225: my ($dirRoot,$listing,@listing_results);
10226:
10227: $dirRoot = $perlvar{'lonDocRoot'};
10228: if (defined($getpropath)) {
10229: $dirRoot = &propath($udom,$uname);
10230: $dirRoot =~ s/\/$//;
10231: } elsif (defined($getuserdir)) {
10232: my $subdir=$uname.'__';
10233: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10234: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10235: ."/$udom/$subdir/$uname";
10236: } elsif (defined($alternateRoot)) {
10237: $dirRoot = $alternateRoot;
10238: }
10239:
10240: if($udom) {
10241: if($uname) {
10242: my $uhome = &homeserver($uname,$udom);
10243: if ($uhome eq 'no_host') {
10244: return ([],'no_host');
10245: }
10246: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10247: .$getuserdir.':'.&escape($dirRoot)
10248: .':'.&escape($uname).':'.&escape($udom),$uhome);
10249: if ($listing eq 'unknown_cmd') {
10250: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10251: } else {
10252: @listing_results = map { &unescape($_); } split(/:/,$listing);
10253: }
10254: if ($listing eq 'unknown_cmd') {
10255: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10256: @listing_results = split(/:/,$listing);
10257: } else {
10258: @listing_results = map { &unescape($_); } split(/:/,$listing);
10259: }
10260: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10261: ($listing eq 'rejected') || ($listing eq 'refused') ||
10262: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10263: return ([],$listing);
10264: } else {
10265: return (\@listing_results);
10266: }
10267: } elsif(!$alternateRoot) {
10268: my (%allusers,%listerror);
10269: my %servers = &get_servers($udom,'library');
10270: foreach my $tryserver (keys(%servers)) {
10271: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10272: &escape($udom),$tryserver);
10273: if ($listing eq 'unknown_cmd') {
10274: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10275: $udom, $tryserver);
10276: } else {
10277: @listing_results = map { &unescape($_); } split(/:/,$listing);
10278: }
10279: if ($listing eq 'unknown_cmd') {
10280: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10281: $udom, $tryserver);
10282: @listing_results = split(/:/,$listing);
10283: } else {
10284: @listing_results =
10285: map { &unescape($_); } split(/:/,$listing);
10286: }
10287: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10288: ($listing eq 'rejected') || ($listing eq 'refused') ||
10289: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10290: $listerror{$tryserver} = $listing;
10291: } else {
10292: foreach my $line (@listing_results) {
10293: my ($entry) = split(/&/,$line,2);
10294: $allusers{$entry} = 1;
10295: }
10296: }
10297: }
10298: my @alluserslist=();
10299: foreach my $user (sort(keys(%allusers))) {
10300: push(@alluserslist,$user.'&user');
10301: }
10302: if (!%listerror) {
10303: # no errors
10304: return (\@alluserslist);
10305: } elsif (scalar(keys(%servers)) == 1) {
10306: # one library server, one error
10307: my ($key) = keys(%listerror);
10308: return (\@alluserslist, $listerror{$key});
10309: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10310: # con_lost indicates that we might miss data from at least one
10311: # library server
10312: return (\@alluserslist, 'con_lost');
10313: } else {
10314: # multiple library servers and no con_lost -> data should be
10315: # complete.
10316: return (\@alluserslist);
10317: }
10318:
10319: } else {
10320: return ([],'missing username');
10321: }
10322: } elsif(!defined($getpropath)) {
10323: my $path = $perlvar{'lonDocRoot'}.'/res/';
10324: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10325: return (\@all_domains);
10326: } else {
10327: return ([],'missing domain');
10328: }
10329: }
10330:
10331: # --------------------------------------------- GetFileTimestamp
10332: # This function utilizes dirlist and returns the date stamp for
10333: # when it was last modified. It will also return an error of -1
10334: # if an error occurs
10335:
10336: sub GetFileTimestamp {
10337: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10338: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10339: $studentName = &LONCAPA::clean_username($studentName);
10340: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10341: undef,$getuserdir);
10342: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10343: return -1;
10344: }
10345: if (ref($fileref) eq 'ARRAY') {
10346: my @stats = split('&',$fileref->[0]);
10347: # @stats contains first the filename, then the stat output
10348: return $stats[10]; # so this is 10 instead of 9.
10349: } else {
10350: return -1;
10351: }
10352: }
10353:
10354: sub stat_file {
10355: my ($uri) = @_;
10356: $uri = &clutter_with_no_wrapper($uri);
10357:
10358: my ($udom,$uname,$file);
10359: if ($uri =~ m-^/(uploaded|editupload)/-) {
10360: ($udom,$uname,$file) =
10361: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10362: $file = 'userfiles/'.$file;
10363: }
10364: if ($uri =~ m-^/res/-) {
10365: ($udom,$uname) =
10366: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10367: $file = $uri;
10368: }
10369:
10370: if (!$udom || !$uname || !$file) {
10371: # unable to handle the uri
10372: return ();
10373: }
10374: my $getpropath;
10375: if ($file =~ /^userfiles\//) {
10376: $getpropath = 1;
10377: }
10378: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10379: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10380: return ();
10381: } else {
10382: if (ref($listref) eq 'ARRAY') {
10383: my @stats = split('&',$listref->[0]);
10384: shift(@stats); #filename is first
10385: return @stats;
10386: }
10387: }
10388: return ();
10389: }
10390:
10391: # -------------------------------------------------------- Value of a Condition
10392:
10393: # gets the value of a specific preevaluated condition
10394: # stored in the string $env{user.state.<cid>}
10395: # or looks up a condition reference in the bighash and if if hasn't
10396: # already been evaluated recurses into docondval to get the value of
10397: # the condition, then memoizing it to
10398: # $env{user.state.<cid>.<condition>}
10399: sub directcondval {
10400: my $number=shift;
10401: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
10402: &Apache::lonuserstate::evalstate();
10403: }
10404: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
10405: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
10406: } elsif ($number =~ /^_/) {
10407: my $sub_condition;
10408: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10409: &GDBM_READER(),0640)) {
10410: $sub_condition=$bighash{'conditions'.$number};
10411: untie(%bighash);
10412: }
10413: my $value = &docondval($sub_condition);
10414: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
10415: return $value;
10416: }
10417: if ($env{'user.state.'.$env{'request.course.id'}}) {
10418: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
10419: } else {
10420: return 2;
10421: }
10422: }
10423:
10424: # get the collection of conditions for this resource
10425: sub condval {
10426: my $condidx=shift;
10427: my $allpathcond='';
10428: foreach my $cond (split(/\|/,$condidx)) {
10429: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
10430: $allpathcond.=
10431: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
10432: }
10433: }
10434: $allpathcond=~s/\|$//;
10435: return &docondval($allpathcond);
10436: }
10437:
10438: #evaluates an expression of conditions
10439: sub docondval {
10440: my ($allpathcond) = @_;
10441: my $result=0;
10442: if ($env{'request.course.id'}
10443: && defined($allpathcond)) {
10444: my $operand='|';
10445: my @stack;
10446: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
10447: if ($chunk eq '(') {
10448: push @stack,($operand,$result);
10449: } elsif ($chunk eq ')') {
10450: my $before=pop @stack;
10451: if (pop @stack eq '&') {
10452: $result=$result>$before?$before:$result;
10453: } else {
10454: $result=$result>$before?$result:$before;
10455: }
10456: } elsif (($chunk eq '&') || ($chunk eq '|')) {
10457: $operand=$chunk;
10458: } else {
10459: my $new=directcondval($chunk);
10460: if ($operand eq '&') {
10461: $result=$result>$new?$new:$result;
10462: } else {
10463: $result=$result>$new?$result:$new;
10464: }
10465: }
10466: }
10467: }
10468: return $result;
10469: }
10470:
10471: # ---------------------------------------------------- Devalidate courseresdata
10472:
10473: sub devalidatecourseresdata {
10474: my ($coursenum,$coursedomain)=@_;
10475: my $hashid=$coursenum.':'.$coursedomain;
10476: &devalidate_cache_new('courseres',$hashid);
10477: }
10478:
10479:
10480: # --------------------------------------------------- Course Resourcedata Query
10481: #
10482: # Parameters:
10483: # $coursenum - Number of the course.
10484: # $coursedomain - Domain at which the course was created.
10485: # Returns:
10486: # A hash of the course parameters along (I think) with timestamps
10487: # and version info.
10488:
10489: sub get_courseresdata {
10490: my ($coursenum,$coursedomain)=@_;
10491: my $coursehom=&homeserver($coursenum,$coursedomain);
10492: my $hashid=$coursenum.':'.$coursedomain;
10493: my ($result,$cached)=&is_cached_new('courseres',$hashid);
10494: my %dumpreply;
10495: unless (defined($cached)) {
10496: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
10497: $result=\%dumpreply;
10498: my ($tmp) = keys(%dumpreply);
10499: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10500: &do_cache_new('courseres',$hashid,$result,600);
10501: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
10502: return $tmp;
10503: } elsif ($tmp =~ /^(error)/) {
10504: $result=undef;
10505: &do_cache_new('courseres',$hashid,$result,600);
10506: }
10507: }
10508: return $result;
10509: }
10510:
10511: sub devalidateuserresdata {
10512: my ($uname,$udom)=@_;
10513: my $hashid="$udom:$uname";
10514: &devalidate_cache_new('userres',$hashid);
10515: }
10516:
10517: sub get_userresdata {
10518: my ($uname,$udom)=@_;
10519: #most student don\'t have any data set, check if there is some data
10520: if (&EXT_cache_status($udom,$uname)) { return undef; }
10521:
10522: my $hashid="$udom:$uname";
10523: my ($result,$cached)=&is_cached_new('userres',$hashid);
10524: if (!defined($cached)) {
10525: my %resourcedata=&dump('resourcedata',$udom,$uname);
10526: $result=\%resourcedata;
10527: &do_cache_new('userres',$hashid,$result,600);
10528: }
10529: my ($tmp)=keys(%$result);
10530: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
10531: return $result;
10532: }
10533: #error 2 occurs when the .db doesn't exist
10534: if ($tmp!~/error: 2 /) {
10535: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
10536: &logthis("<font color=\"blue\">WARNING:".
10537: " Trying to get resource data for ".
10538: $uname." at ".$udom.": ".
10539: $tmp."</font>");
10540: }
10541: } elsif ($tmp=~/error: 2 /) {
10542: #&EXT_cache_set($udom,$uname);
10543: &do_cache_new('userres',$hashid,undef,600);
10544: undef($tmp); # not really an error so don't send it back
10545: }
10546: return $tmp;
10547: }
10548: #----------------------------------------------- resdata - return resource data
10549: # Purpose:
10550: # Return resource data for either users or for a course.
10551: # Parameters:
10552: # $name - Course/user name.
10553: # $domain - Name of the domain the user/course is registered on.
10554: # $type - Type of thing $name is (must be 'course' or 'user')
10555: # @which - Array of names of resources desired.
10556: # Returns:
10557: # The value of the first reasource in @which that is found in the
10558: # resource hash.
10559: # Exceptional Conditions:
10560: # If the $type passed in is not valid (not the string 'course' or
10561: # 'user', an undefined reference is returned.
10562: # If none of the resources are found, an undef is returned
10563: sub resdata {
10564: my ($name,$domain,$type,@which)=@_;
10565: my $result;
10566: if ($type eq 'course') {
10567: $result=&get_courseresdata($name,$domain);
10568: } elsif ($type eq 'user') {
10569: $result=&get_userresdata($name,$domain);
10570: }
10571: if (!ref($result)) { return $result; }
10572: foreach my $item (@which) {
10573: if (ref($item) eq 'ARRAY') {
10574: if (defined($result->{$item->[0]})) {
10575: return [$result->{$item->[0]},$item->[1]];
10576: }
10577: }
10578: }
10579: return undef;
10580: }
10581:
10582: sub get_domain_ltitools {
10583: my ($cdom) = @_;
10584: my %ltitools;
10585: my ($result,$cached)=&is_cached_new('ltitools',$cdom);
10586: if (defined($cached)) {
10587: if (ref($result) eq 'HASH') {
10588: %ltitools = %{$result};
10589: }
10590: } else {
10591: my %domconfig = &get_dom('configuration',['ltitools'],$cdom);
10592: if (ref($domconfig{'ltitools'}) eq 'HASH') {
10593: %ltitools = %{$domconfig{'ltitools'}};
10594: my %encdomconfig = &get_dom('encconfig',['ltitools'],$cdom);
10595: if (ref($encdomconfig{'ltitools'}) eq 'HASH') {
10596: foreach my $id (keys(%ltitools)) {
10597: if (ref($encdomconfig{'ltitools'}{$id}) eq 'HASH') {
10598: foreach my $item ('key','secret') {
10599: $ltitools{$id}{$item} = $encdomconfig{'ltitools'}{$id}{$item};
10600: }
10601: }
10602: }
10603: }
10604: }
10605: my $cachetime = 24*60*60;
10606: &do_cache_new('ltitools',$cdom,\%ltitools,$cachetime);
10607: }
10608: return %ltitools;
10609: }
10610:
10611: sub get_numsuppfiles {
10612: my ($cnum,$cdom,$ignorecache)=@_;
10613: my $hashid=$cnum.':'.$cdom;
10614: my ($suppcount,$cached);
10615: unless ($ignorecache) {
10616: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
10617: }
10618: unless (defined($cached)) {
10619: my $chome=&homeserver($cnum,$cdom);
10620: unless ($chome eq 'no_host') {
10621: ($suppcount,my $errors) = (0,0);
10622: my $suppmap = 'supplemental.sequence';
10623: ($suppcount,$errors) =
10624: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
10625: }
10626: &do_cache_new('suppcount',$hashid,$suppcount,600);
10627: }
10628: return $suppcount;
10629: }
10630:
10631: #
10632: # EXT resource caching routines
10633: #
10634:
10635: sub clear_EXT_cache_status {
10636: &delenv('cache.EXT.');
10637: }
10638:
10639: sub EXT_cache_status {
10640: my ($target_domain,$target_user) = @_;
10641: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10642: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
10643: # We know already the user has no data
10644: return 1;
10645: } else {
10646: return 0;
10647: }
10648: }
10649:
10650: sub EXT_cache_set {
10651: my ($target_domain,$target_user) = @_;
10652: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10653: #&appenv({$cachename => time});
10654: }
10655:
10656: # --------------------------------------------------------- Value of a Variable
10657: sub EXT {
10658:
10659: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
10660: unless ($varname) { return ''; }
10661: #get real user name/domain, courseid and symb
10662: my $courseid;
10663: my $publicuser;
10664: if ($symbparm) {
10665: $symbparm=&get_symb_from_alias($symbparm);
10666: }
10667: if (!($uname && $udom)) {
10668: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
10669: if (!$symbparm) { $symbparm=$cursymb; }
10670: } else {
10671: $courseid=$env{'request.course.id'};
10672: }
10673: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
10674: my $rest;
10675: if (defined($therest[0])) {
10676: $rest=join('.',@therest);
10677: } else {
10678: $rest='';
10679: }
10680:
10681: my $qualifierrest=$qualifier;
10682: if ($rest) { $qualifierrest.='.'.$rest; }
10683: my $spacequalifierrest=$space;
10684: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
10685: if ($realm eq 'user') {
10686: # --------------------------------------------------------------- user.resource
10687: if ($space eq 'resource') {
10688: if ( (defined($Apache::lonhomework::parsing_a_problem)
10689: || defined($Apache::lonhomework::parsing_a_task))
10690: &&
10691: ($symbparm eq &symbread()) ) {
10692: # if we are in the middle of processing the resource the
10693: # get the value we are planning on committing
10694: if (defined($Apache::lonhomework::results{$qualifierrest})) {
10695: return $Apache::lonhomework::results{$qualifierrest};
10696: } else {
10697: return $Apache::lonhomework::history{$qualifierrest};
10698: }
10699: } else {
10700: my %restored;
10701: if ($publicuser || $env{'request.state'} eq 'construct') {
10702: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
10703: } else {
10704: %restored=&restore($symbparm,$courseid,$udom,$uname);
10705: }
10706: return $restored{$qualifierrest};
10707: }
10708: # ----------------------------------------------------------------- user.access
10709: } elsif ($space eq 'access') {
10710: # FIXME - not supporting calls for a specific user
10711: return &allowed($qualifier,$rest);
10712: # ------------------------------------------ user.preferences, user.environment
10713: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
10714: if (($uname eq $env{'user.name'}) &&
10715: ($udom eq $env{'user.domain'})) {
10716: return $env{join('.',('environment',$qualifierrest))};
10717: } else {
10718: my %returnhash;
10719: if (!$publicuser) {
10720: %returnhash=&userenvironment($udom,$uname,
10721: $qualifierrest);
10722: }
10723: return $returnhash{$qualifierrest};
10724: }
10725: # ----------------------------------------------------------------- user.course
10726: } elsif ($space eq 'course') {
10727: # FIXME - not supporting calls for a specific user
10728: return $env{join('.',('request.course',$qualifier))};
10729: # ------------------------------------------------------------------- user.role
10730: } elsif ($space eq 'role') {
10731: # FIXME - not supporting calls for a specific user
10732: my ($role,$where)=split(/\./,$env{'request.role'});
10733: if ($qualifier eq 'value') {
10734: return $role;
10735: } elsif ($qualifier eq 'extent') {
10736: return $where;
10737: }
10738: # ----------------------------------------------------------------- user.domain
10739: } elsif ($space eq 'domain') {
10740: return $udom;
10741: # ------------------------------------------------------------------- user.name
10742: } elsif ($space eq 'name') {
10743: return $uname;
10744: # ---------------------------------------------------- Any other user namespace
10745: } else {
10746: my %reply;
10747: if (!$publicuser) {
10748: %reply=&get($space,[$qualifierrest],$udom,$uname);
10749: }
10750: return $reply{$qualifierrest};
10751: }
10752: } elsif ($realm eq 'query') {
10753: # ---------------------------------------------- pull stuff out of query string
10754: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
10755: [$spacequalifierrest]);
10756: return $env{'form.'.$spacequalifierrest};
10757: } elsif ($realm eq 'request') {
10758: # ------------------------------------------------------------- request.browser
10759: if ($space eq 'browser') {
10760: return $env{'browser.'.$qualifier};
10761: # ------------------------------------------------------------ request.filename
10762: } else {
10763: return $env{'request.'.$spacequalifierrest};
10764: }
10765: } elsif ($realm eq 'course') {
10766: # ---------------------------------------------------------- course.description
10767: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
10768: } elsif ($realm eq 'resource') {
10769:
10770: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
10771: if (!$symbparm) { $symbparm=&symbread(); }
10772: }
10773:
10774: if ($qualifier eq '') {
10775: if ($space eq 'title') {
10776: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
10777: return &gettitle($symbparm);
10778: }
10779:
10780: if ($space eq 'map') {
10781: my ($map) = &decode_symb($symbparm);
10782: return &symbread($map);
10783: }
10784: if ($space eq 'maptitle') {
10785: my ($map) = &decode_symb($symbparm);
10786: return &gettitle($map);
10787: }
10788: if ($space eq 'filename') {
10789: if ($symbparm) {
10790: return &clutter((&decode_symb($symbparm))[2]);
10791: }
10792: return &hreflocation('',$env{'request.filename'});
10793: }
10794:
10795: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
10796: if ($space eq 'visibleparts') {
10797: my $navmap = Apache::lonnavmaps::navmap->new();
10798: my $item;
10799: if (ref($navmap)) {
10800: my $res = $navmap->getBySymb($symbparm);
10801: my $parts = $res->parts();
10802: if (ref($parts) eq 'ARRAY') {
10803: $item = join(',',@{$parts});
10804: }
10805: undef($navmap);
10806: }
10807: return $item;
10808: }
10809: }
10810: }
10811:
10812: my ($section, $group, @groups);
10813: my ($courselevelm,$courselevel);
10814: if (($courseid eq '') && ($cid)) {
10815: $courseid = $cid;
10816: }
10817: if (($symbparm && $courseid) &&
10818: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
10819:
10820: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
10821:
10822: # ----------------------------------------------------- Cascading lookup scheme
10823: my $symbp=$symbparm;
10824: my $mapp=&deversion((&decode_symb($symbp))[0]);
10825:
10826: my $symbparm=$symbp.'.'.$spacequalifierrest;
10827: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
10828:
10829: if (($env{'user.name'} eq $uname) &&
10830: ($env{'user.domain'} eq $udom)) {
10831: $section=$env{'request.course.sec'};
10832: @groups = split(/:/,$env{'request.course.groups'});
10833: @groups=&sort_course_groups($courseid,@groups);
10834: } else {
10835: if (! defined($usection)) {
10836: $section=&getsection($udom,$uname,$courseid);
10837: } else {
10838: $section = $usection;
10839: }
10840: @groups = &get_users_groups($udom,$uname,$courseid);
10841: }
10842:
10843: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
10844: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
10845: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
10846:
10847: $courselevel=$courseid.'.'.$spacequalifierrest;
10848: my $courselevelr=$courseid.'.'.$symbparm;
10849: $courselevelm=$courseid.'.'.$mapparm;
10850:
10851: # ----------------------------------------------------------- first, check user
10852:
10853: my $userreply=&resdata($uname,$udom,'user',
10854: ([$courselevelr,'resource'],
10855: [$courselevelm,'map' ],
10856: [$courselevel, 'course' ]));
10857: if (defined($userreply)) { return &get_reply($userreply); }
10858:
10859: # ------------------------------------------------ second, check some of course
10860: my $coursereply;
10861: if (@groups > 0) {
10862: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
10863: $mapparm,$spacequalifierrest);
10864: if (defined($coursereply)) { return &get_reply($coursereply); }
10865: }
10866:
10867: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10868: $env{'course.'.$courseid.'.domain'},
10869: 'course',
10870: ([$seclevelr, 'resource'],
10871: [$seclevelm, 'map' ],
10872: [$seclevel, 'course' ],
10873: [$courselevelr,'resource']));
10874: if (defined($coursereply)) { return &get_reply($coursereply); }
10875:
10876: # ------------------------------------------------------ third, check map parms
10877: my %parmhash=();
10878: my $thisparm='';
10879: if (tie(%parmhash,'GDBM_File',
10880: $env{'request.course.fn'}.'_parms.db',
10881: &GDBM_READER(),0640)) {
10882: $thisparm=$parmhash{$symbparm};
10883: untie(%parmhash);
10884: }
10885: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
10886: }
10887: # ------------------------------------------ fourth, look in resource metadata
10888:
10889: $spacequalifierrest=~s/\./\_/;
10890: my $filename;
10891: if (!$symbparm) { $symbparm=&symbread(); }
10892: if ($symbparm) {
10893: $filename=(&decode_symb($symbparm))[2];
10894: } else {
10895: $filename=$env{'request.filename'};
10896: }
10897: my $metadata=&metadata($filename,$spacequalifierrest);
10898: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10899: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
10900: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10901:
10902: # ---------------------------------------------- fourth, look in rest of course
10903: if ($symbparm && defined($courseid) &&
10904: $courseid eq $env{'request.course.id'}) {
10905: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10906: $env{'course.'.$courseid.'.domain'},
10907: 'course',
10908: ([$courselevelm,'map' ],
10909: [$courselevel, 'course']));
10910: if (defined($coursereply)) { return &get_reply($coursereply); }
10911: }
10912: # ------------------------------------------------------------------ Cascade up
10913: unless ($space eq '0') {
10914: my @parts=split(/_/,$space);
10915: my $id=pop(@parts);
10916: my $part=join('_',@parts);
10917: if ($part eq '') { $part='0'; }
10918: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
10919: $symbparm,$udom,$uname,$section,1);
10920: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
10921: }
10922: if ($recurse) { return undef; }
10923: my $pack_def=&packages_tab_default($filename,$varname);
10924: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
10925: # ---------------------------------------------------- Any other user namespace
10926: } elsif ($realm eq 'environment') {
10927: # ----------------------------------------------------------------- environment
10928: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
10929: return $env{'environment.'.$spacequalifierrest};
10930: } else {
10931: if ($uname eq 'anonymous' && $udom eq '') {
10932: return '';
10933: }
10934: my %returnhash=&userenvironment($udom,$uname,
10935: $spacequalifierrest);
10936: return $returnhash{$spacequalifierrest};
10937: }
10938: } elsif ($realm eq 'system') {
10939: # ----------------------------------------------------------------- system.time
10940: if ($space eq 'time') {
10941: return time;
10942: }
10943: } elsif ($realm eq 'server') {
10944: # ----------------------------------------------------------------- system.time
10945: if ($space eq 'name') {
10946: return $ENV{'SERVER_NAME'};
10947: }
10948: }
10949: return '';
10950: }
10951:
10952: sub get_reply {
10953: my ($reply_value) = @_;
10954: if (ref($reply_value) eq 'ARRAY') {
10955: if (wantarray) {
10956: return @$reply_value;
10957: }
10958: return $reply_value->[0];
10959: } else {
10960: return $reply_value;
10961: }
10962: }
10963:
10964: sub check_group_parms {
10965: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
10966: my @groupitems = ();
10967: my $resultitem;
10968: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
10969: foreach my $group (@{$groups}) {
10970: foreach my $level (@levels) {
10971: my $item = $courseid.'.['.$group.'].'.$level->[0];
10972: push(@groupitems,[$item,$level->[1]]);
10973: }
10974: }
10975: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10976: $env{'course.'.$courseid.'.domain'},
10977: 'course',@groupitems);
10978: return $coursereply;
10979: }
10980:
10981: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10982: my ($courseid,@groups) = @_;
10983: @groups = sort(@groups);
10984: return @groups;
10985: }
10986:
10987: sub packages_tab_default {
10988: my ($uri,$varname)=@_;
10989: my (undef,$part,$name)=split(/\./,$varname);
10990:
10991: my (@extension,@specifics,$do_default);
10992: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10993: my ($pack_type,$pack_part)=split(/_/,$package,2);
10994: if ($pack_type eq 'default') {
10995: $do_default=1;
10996: } elsif ($pack_type eq 'extension') {
10997: push(@extension,[$package,$pack_type,$pack_part]);
10998: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10999: # only look at packages defaults for packages that this id is
11000: push(@specifics,[$package,$pack_type,$pack_part]);
11001: }
11002: }
11003: # first look for a package that matches the requested part id
11004: foreach my $package (@specifics) {
11005: my (undef,$pack_type,$pack_part)=@{$package};
11006: next if ($pack_part ne $part);
11007: if (defined($packagetab{"$pack_type&$name&default"})) {
11008: return $packagetab{"$pack_type&$name&default"};
11009: }
11010: }
11011: # look for any possible matching non extension_ package
11012: foreach my $package (@specifics) {
11013: my (undef,$pack_type,$pack_part)=@{$package};
11014: if (defined($packagetab{"$pack_type&$name&default"})) {
11015: return $packagetab{"$pack_type&$name&default"};
11016: }
11017: if ($pack_type eq 'part') { $pack_part='0'; }
11018: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11019: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11020: }
11021: }
11022: # look for any posible extension_ match
11023: foreach my $package (@extension) {
11024: my ($package,$pack_type)=@{$package};
11025: if (defined($packagetab{"$pack_type&$name&default"})) {
11026: return $packagetab{"$pack_type&$name&default"};
11027: }
11028: if (defined($packagetab{$package."&$name&default"})) {
11029: return $packagetab{$package."&$name&default"};
11030: }
11031: }
11032: # look for a global default setting
11033: if ($do_default && defined($packagetab{"default&$name&default"})) {
11034: return $packagetab{"default&$name&default"};
11035: }
11036: return undef;
11037: }
11038:
11039: sub add_prefix_and_part {
11040: my ($prefix,$part)=@_;
11041: my $keyroot;
11042: if (defined($prefix) && $prefix !~ /^__/) {
11043: # prefix that has a part already
11044: $keyroot=$prefix;
11045: } elsif (defined($prefix)) {
11046: # prefix that is missing a part
11047: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11048: } else {
11049: # no prefix at all
11050: if (defined($part)) { $keyroot='_'.$part; }
11051: }
11052: return $keyroot;
11053: }
11054:
11055: # ---------------------------------------------------------------- Get metadata
11056:
11057: my %metaentry;
11058: my %importedpartids;
11059: my %importedrespids;
11060: sub metadata {
11061: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
11062: $uri=&declutter($uri);
11063: # if it is a non metadata possible uri return quickly
11064: if (($uri eq '') ||
11065: (($uri =~ m|^/*adm/|) &&
11066: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11067: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11068: return undef;
11069: }
11070: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11071: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11072: return undef;
11073: }
11074: my $filename=$uri;
11075: $uri=~s/\.meta$//;
11076: #
11077: # Is the metadata already cached?
11078: # Look at timestamp of caching
11079: # Everything is cached by the main uri, libraries are never directly cached
11080: #
11081: if (!defined($liburi)) {
11082: my ($result,$cached)=&is_cached_new('meta',$uri);
11083: if (defined($cached)) { return $result->{':'.$what}; }
11084: }
11085: {
11086: # Imported parts would go here
11087: my @origfiletagids=();
11088: my $importedparts=0;
11089:
11090: # Imported responseids would go here
11091: my $importedresponses=0;
11092: #
11093: # Is this a recursive call for a library?
11094: #
11095: # if (! exists($metacache{$uri})) {
11096: # $metacache{$uri}={};
11097: # }
11098: my $cachetime = 60*60;
11099: if ($liburi) {
11100: $liburi=&declutter($liburi);
11101: $filename=$liburi;
11102: } else {
11103: &devalidate_cache_new('meta',$uri);
11104: undef(%metaentry);
11105: }
11106: my %metathesekeys=();
11107: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
11108: my $metastring;
11109: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
11110: my $which = &hreflocation('','/'.($liburi || $uri));
11111: $metastring =
11112: &Apache::lonnet::ssi_body($which,
11113: ('grade_target' => 'meta'));
11114: $cachetime = 1; # only want this cached in the child not long term
11115: } elsif (($uri !~ m -^(editupload)/-) &&
11116: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
11117: my $file=&filelocation('',&clutter($filename));
11118: #push(@{$metaentry{$uri.'.file'}},$file);
11119: $metastring=&getfile($file);
11120: }
11121: my $parser=HTML::LCParser->new(\$metastring);
11122: my $token;
11123: undef %metathesekeys;
11124: while ($token=$parser->get_token) {
11125: if ($token->[0] eq 'S') {
11126: if (defined($token->[2]->{'package'})) {
11127: #
11128: # This is a package - get package info
11129: #
11130: my $package=$token->[2]->{'package'};
11131: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11132: if (defined($token->[2]->{'id'})) {
11133: $keyroot.='_'.$token->[2]->{'id'};
11134: }
11135: if ($metaentry{':packages'}) {
11136: $metaentry{':packages'}.=','.$package.$keyroot;
11137: } else {
11138: $metaentry{':packages'}=$package.$keyroot;
11139: }
11140: foreach my $pack_entry (keys(%packagetab)) {
11141: my $part=$keyroot;
11142: $part=~s/^\_//;
11143: if ($pack_entry=~/^\Q$package\E\&/ ||
11144: $pack_entry=~/^\Q$package\E_0\&/) {
11145: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
11146: # ignore package.tab specified default values
11147: # here &package_tab_default() will fetch those
11148: if ($subp eq 'default') { next; }
11149: my $value=$packagetab{$pack_entry};
11150: my $unikey;
11151: if ($pack =~ /_0$/) {
11152: $unikey='parameter_0_'.$name;
11153: $part=0;
11154: } else {
11155: $unikey='parameter'.$keyroot.'_'.$name;
11156: }
11157: if ($subp eq 'display') {
11158: $value.=' [Part: '.$part.']';
11159: }
11160: $metaentry{':'.$unikey.'.part'}=$part;
11161: $metathesekeys{$unikey}=1;
11162: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11163: $metaentry{':'.$unikey.'.'.$subp}=$value;
11164: }
11165: if (defined($metaentry{':'.$unikey.'.default'})) {
11166: $metaentry{':'.$unikey}=
11167: $metaentry{':'.$unikey.'.default'};
11168: }
11169: }
11170: }
11171: } else {
11172: #
11173: # This is not a package - some other kind of start tag
11174: #
11175: my $entry=$token->[1];
11176: my $unikey='';
11177:
11178: if ($entry eq 'import') {
11179: #
11180: # Importing a library here
11181: #
11182: my $location=$parser->get_text('/import');
11183: my $dir=$filename;
11184: $dir=~s|[^/]*$||;
11185: $location=&filelocation($dir,$location);
11186:
11187: my $importid=$token->[2]->{'id'};
11188: my $importmode=$token->[2]->{'importmode'};
11189: #
11190: # Check metadata for imported file to
11191: # see if it contained response items
11192: #
11193: my $libresponseorder = &metadata($location,'responseorder');
11194: my $origfile;
11195: if ($libresponseorder ne '') {
11196: if ($#origfiletagids<0) {
11197: undef(%importedrespids);
11198: undef(%importedpartids);
11199: }
11200: @{$importedrespids{$importid}} = split(/\s*,\s*/,$libresponseorder);
11201: if (@{$importedrespids{$importid}} > 0) {
11202: $importedresponses = 1;
11203: # We need to get the original file and the imported file to get the response order correct
11204: # Load and inspect original file
11205: if ($#origfiletagids<0) {
11206: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
11207: $origfile=&getfile($origfilelocation);
11208: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11209: }
11210: }
11211: }
11212: if ($importmode eq 'problem') {
11213: # Import as problem/response
11214: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11215: } elsif ($importmode eq 'part') {
11216: # Import as part(s)
11217: $importedparts=1;
11218: # We need to get the original file and the imported file to get the part order correct
11219: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
11220: # Load and inspect original file if we didn't do that already
11221: if ($#origfileimportpartids<0) {
11222: undef(%importedrespids);
11223: undef(%importedpartids);
11224: if ($origfile eq '') {
11225: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
11226: $origfile=&getfile($origfilelocation);
11227: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11228: }
11229: }
11230:
11231: # Load and inspect imported file
11232: my $impfile=&getfile($location);
11233: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11234: if ($#impfilepartids>=0) {
11235: # This problem had parts
11236: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
11237: } else {
11238: # Importing by turning a single problem into a problem part
11239: # It gets the import-tags ID as part-ID
11240: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
11241: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
11242: }
11243: } else {
11244: # Normal import
11245: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11246: if (defined($token->[2]->{'id'})) {
11247: $unikey.='_'.$token->[2]->{'id'};
11248: }
11249: }
11250:
11251: if ($depthcount<20) {
11252: my $metadata =
11253: &metadata($uri,'keys', $location,$unikey,
11254: $depthcount+1);
11255: foreach my $meta (split(',',$metadata)) {
11256: $metaentry{':'.$meta}=$metaentry{':'.$meta};
11257: $metathesekeys{$meta}=1;
11258: }
11259:
11260: }
11261: } else {
11262: #
11263: # Not importing, some other kind of non-package, non-library start tag
11264: #
11265: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
11266: if (defined($token->[2]->{'id'})) {
11267: $unikey.='_'.$token->[2]->{'id'};
11268: }
11269: if (defined($token->[2]->{'name'})) {
11270: $unikey.='_'.$token->[2]->{'name'};
11271: }
11272: $metathesekeys{$unikey}=1;
11273: foreach my $param (@{$token->[3]}) {
11274: $metaentry{':'.$unikey.'.'.$param} =
11275: $token->[2]->{$param};
11276: }
11277: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
11278: my $default=$metaentry{':'.$unikey.'.default'};
11279: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
11280: # only ws inside the tag, and not in default, so use default
11281: # as value
11282: $metaentry{':'.$unikey}=$default;
11283: } elsif ( $internaltext =~ /\S/ ) {
11284: # something interesting inside the tag
11285: $metaentry{':'.$unikey}=$internaltext;
11286: } else {
11287: # no interesting values, don't set a default
11288: }
11289: # end of not-a-package not-a-library import
11290: }
11291: # end of not-a-package start tag
11292: }
11293: # the next is the end of "start tag"
11294: }
11295: }
11296: my ($extension) = ($uri =~ /\.(\w+)$/);
11297: $extension = lc($extension);
11298: if ($extension eq 'htm') { $extension='html'; }
11299:
11300: foreach my $key (keys(%packagetab)) {
11301: #no specific packages #how's our extension
11302: if ($key!~/^extension_\Q$extension\E&/) { next; }
11303: &metadata_create_package_def($uri,$key,'extension_'.$extension,
11304: \%metathesekeys);
11305: }
11306:
11307: if (!exists($metaentry{':packages'})
11308: || $packagetab{"import_defaults&extension_$extension"}) {
11309: foreach my $key (keys(%packagetab)) {
11310: #no specific packages well let's get default then
11311: if ($key!~/^default&/) { next; }
11312: &metadata_create_package_def($uri,$key,'default',
11313: \%metathesekeys);
11314: }
11315: }
11316: # are there custom rights to evaluate
11317: if ($metaentry{':copyright'} eq 'custom') {
11318:
11319: #
11320: # Importing a rights file here
11321: #
11322: unless ($depthcount) {
11323: my $location=$metaentry{':customdistributionfile'};
11324: my $dir=$filename;
11325: $dir=~s|[^/]*$||;
11326: $location=&filelocation($dir,$location);
11327: my $rights_metadata =
11328: &metadata($uri,'keys',$location,'_rights',
11329: $depthcount+1);
11330: foreach my $rights (split(',',$rights_metadata)) {
11331: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
11332: $metathesekeys{$rights}=1;
11333: }
11334: }
11335: }
11336: # uniqifiy package listing
11337: my %seen;
11338: my @uniq_packages =
11339: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
11340: $metaentry{':packages'} = join(',',@uniq_packages);
11341:
11342: if (($importedresponses) || ($importedparts)) {
11343: if ($importedparts) {
11344: # We had imported parts and need to rebuild partorder
11345: $metaentry{':partorder'}='';
11346: $metathesekeys{'partorder'}=1;
11347: }
11348: if ($importedresponses) {
11349: # We had imported responses and need to rebuild responseorder
11350: $metaentry{':responseorder'}='';
11351: $metathesekeys{'responseorder'}=1;
11352: }
11353: for (my $index=0;$index<$#origfiletagids;$index+=2) {
11354: my $origid = $origfiletagids[$index+1];
11355: if ($origfiletagids[$index] eq 'part') {
11356: # Original part, part of the problem
11357: if ($importedparts) {
11358: $metaentry{':partorder'}.=','.$origid;
11359: }
11360: } elsif ($origfiletagids[$index] eq 'import') {
11361: if ($importedparts) {
11362: # We have imported parts at this position
11363: $metaentry{':partorder'}.=','.$importedpartids{$origid};
11364: }
11365: if ($importedresponses) {
11366: # We have imported responses at this position
11367: if (ref($importedrespids{$origid}) eq 'ARRAY') {
11368: $metaentry{':responseorder'}.=','.join(',',map { $origid.'_'.$_ } @{$importedrespids{$origid}});
11369: }
11370: }
11371: } else {
11372: # Original response item, part of the problem
11373: if ($importedresponses) {
11374: $metaentry{':responseorder'}.=','.$origid;
11375: }
11376: }
11377: }
11378: if ($importedparts) {
11379: $metaentry{':partorder'}=~s/^\,//;
11380: }
11381: if ($importedresponses) {
11382: $metaentry{':responseorder'}=~s/^\,//;
11383: }
11384: }
11385:
11386: $metaentry{':keys'} = join(',',keys(%metathesekeys));
11387: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
11388: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
11389: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
11390: # this is the end of "was not already recently cached
11391: }
11392: return $metaentry{':'.$what};
11393: }
11394:
11395: sub metadata_create_package_def {
11396: my ($uri,$key,$package,$metathesekeys)=@_;
11397: my ($pack,$name,$subp)=split(/\&/,$key);
11398: if ($subp eq 'default') { next; }
11399:
11400: if (defined($metaentry{':packages'})) {
11401: $metaentry{':packages'}.=','.$package;
11402: } else {
11403: $metaentry{':packages'}=$package;
11404: }
11405: my $value=$packagetab{$key};
11406: my $unikey;
11407: $unikey='parameter_0_'.$name;
11408: $metaentry{':'.$unikey.'.part'}=0;
11409: $$metathesekeys{$unikey}=1;
11410: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11411: $metaentry{':'.$unikey.'.'.$subp}=$value;
11412: }
11413: if (defined($metaentry{':'.$unikey.'.default'})) {
11414: $metaentry{':'.$unikey}=
11415: $metaentry{':'.$unikey.'.default'};
11416: }
11417: }
11418:
11419: sub metadata_generate_part0 {
11420: my ($metadata,$metacache,$uri) = @_;
11421: my %allnames;
11422: foreach my $metakey (keys(%$metadata)) {
11423: if ($metakey=~/^parameter\_(.*)/) {
11424: my $part=$$metacache{':'.$metakey.'.part'};
11425: my $name=$$metacache{':'.$metakey.'.name'};
11426: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
11427: $allnames{$name}=$part;
11428: }
11429: }
11430: }
11431: foreach my $name (keys(%allnames)) {
11432: $$metadata{"parameter_0_$name"}=1;
11433: my $key=":parameter_0_$name";
11434: $$metacache{"$key.part"}='0';
11435: $$metacache{"$key.name"}=$name;
11436: $$metacache{"$key.type"}=$$metacache{':parameter_'.
11437: $allnames{$name}.'_'.$name.
11438: '.type'};
11439: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
11440: '.display'};
11441: my $expr='[Part: '.$allnames{$name}.']';
11442: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
11443: $$metacache{"$key.display"}=$olddis;
11444: }
11445: }
11446:
11447: # ------------------------------------------------------ Devalidate title cache
11448:
11449: sub devalidate_title_cache {
11450: my ($url)=@_;
11451: if (!$env{'request.course.id'}) { return; }
11452: my $symb=&symbread($url);
11453: if (!$symb) { return; }
11454: my $key=$env{'request.course.id'}."\0".$symb;
11455: &devalidate_cache_new('title',$key);
11456: }
11457:
11458: # ------------------------------------------------- Get the title of a course
11459:
11460: sub current_course_title {
11461: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
11462: }
11463: # ------------------------------------------------- Get the title of a resource
11464:
11465: sub gettitle {
11466: my $urlsymb=shift;
11467: my $symb=&symbread($urlsymb);
11468: if ($symb) {
11469: my $key=$env{'request.course.id'}."\0".$symb;
11470: my ($result,$cached)=&is_cached_new('title',$key);
11471: if (defined($cached)) {
11472: return $result;
11473: }
11474: my ($map,$resid,$url)=&decode_symb($symb);
11475: my $title='';
11476: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
11477: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
11478: } else {
11479: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11480: &GDBM_READER(),0640)) {
11481: my $mapid=$bighash{'map_pc_'.&clutter($map)};
11482: $title=$bighash{'title_'.$mapid.'.'.$resid};
11483: untie(%bighash);
11484: }
11485: }
11486: $title=~s/\&colon\;/\:/gs;
11487: if ($title) {
11488: # Remember both $symb and $title for dynamic metadata
11489: $accesshash{$symb.'___crstitle'}=$title;
11490: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
11491: # Cache this title and then return it
11492: return &do_cache_new('title',$key,$title,600);
11493: }
11494: $urlsymb=$url;
11495: }
11496: my $title=&metadata($urlsymb,'title');
11497: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
11498: return $title;
11499: }
11500:
11501: sub get_slot {
11502: my ($which,$cnum,$cdom)=@_;
11503: if (!$cnum || !$cdom) {
11504: (undef,my $courseid)=&whichuser();
11505: $cdom=$env{'course.'.$courseid.'.domain'};
11506: $cnum=$env{'course.'.$courseid.'.num'};
11507: }
11508: my $key=join("\0",'slots',$cdom,$cnum,$which);
11509: my %slotinfo;
11510: if (exists($remembered{$key})) {
11511: $slotinfo{$which} = $remembered{$key};
11512: } else {
11513: %slotinfo=&get('slots',[$which],$cdom,$cnum);
11514: &Apache::lonhomework::showhash(%slotinfo);
11515: my ($tmp)=keys(%slotinfo);
11516: if ($tmp=~/^error:/) { return (); }
11517: $remembered{$key} = $slotinfo{$which};
11518: }
11519: if (ref($slotinfo{$which}) eq 'HASH') {
11520: return %{$slotinfo{$which}};
11521: }
11522: return $slotinfo{$which};
11523: }
11524:
11525: sub get_reservable_slots {
11526: my ($cnum,$cdom,$uname,$udom) = @_;
11527: my $now = time;
11528: my $reservable_info;
11529: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
11530: if (exists($remembered{$key})) {
11531: $reservable_info = $remembered{$key};
11532: } else {
11533: my %resv;
11534: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
11535: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
11536: $reservable_info = \%resv;
11537: $remembered{$key} = $reservable_info;
11538: }
11539: return $reservable_info;
11540: }
11541:
11542: sub get_course_slots {
11543: my ($cnum,$cdom) = @_;
11544: my $hashid=$cnum.':'.$cdom;
11545: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
11546: if (defined($cached)) {
11547: if (ref($result) eq 'HASH') {
11548: return %{$result};
11549: }
11550: } else {
11551: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
11552: my ($tmp) = keys(%slots);
11553: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11554: &do_cache_new('allslots',$hashid,\%slots,600);
11555: return %slots;
11556: }
11557: }
11558: return;
11559: }
11560:
11561: sub devalidate_slots_cache {
11562: my ($cnum,$cdom)=@_;
11563: my $hashid=$cnum.':'.$cdom;
11564: &devalidate_cache_new('allslots',$hashid);
11565: }
11566:
11567: sub get_coursechange {
11568: my ($cdom,$cnum) = @_;
11569: if ($cdom eq '' || $cnum eq '') {
11570: return unless ($env{'request.course.id'});
11571: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
11572: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
11573: }
11574: my $hashid=$cdom.'_'.$cnum;
11575: my ($change,$cached)=&is_cached_new('crschange',$hashid);
11576: if ((defined($cached)) && ($change ne '')) {
11577: return $change;
11578: } else {
11579: my %crshash;
11580: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
11581: if ($crshash{'internal.contentchange'} eq '') {
11582: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
11583: if ($change eq '') {
11584: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
11585: $change = $crshash{'internal.created'};
11586: }
11587: } else {
11588: $change = $crshash{'internal.contentchange'};
11589: }
11590: my $cachetime = 600;
11591: &do_cache_new('crschange',$hashid,$change,$cachetime);
11592: }
11593: return $change;
11594: }
11595:
11596: sub devalidate_coursechange_cache {
11597: my ($cnum,$cdom)=@_;
11598: my $hashid=$cnum.':'.$cdom;
11599: &devalidate_cache_new('crschange',$hashid);
11600: }
11601:
11602: # ------------------------------------------------- Update symbolic store links
11603:
11604: sub symblist {
11605: my ($mapname,%newhash)=@_;
11606: $mapname=&deversion(&declutter($mapname));
11607: my %hash;
11608: if (($env{'request.course.fn'}) && (%newhash)) {
11609: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11610: &GDBM_WRCREAT(),0640)) {
11611: foreach my $url (keys(%newhash)) {
11612: next if ($url eq 'last_known'
11613: && $env{'form.no_update_last_known'});
11614: $hash{declutter($url)}=&encode_symb($mapname,
11615: $newhash{$url}->[1],
11616: $newhash{$url}->[0]);
11617: }
11618: if (untie(%hash)) {
11619: return 'ok';
11620: }
11621: }
11622: }
11623: return 'error';
11624: }
11625:
11626: # --------------------------------------------------------------- Verify a symb
11627:
11628: sub symbverify {
11629: my ($symb,$thisurl,$encstate)=@_;
11630: my $thisfn=$thisurl;
11631: $thisfn=&declutter($thisfn);
11632: # direct jump to resource in page or to a sequence - will construct own symbs
11633: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
11634: # check URL part
11635: my ($map,$resid,$url)=&decode_symb($symb);
11636:
11637: unless ($url eq $thisfn) { return 0; }
11638:
11639: $symb=&symbclean($symb);
11640: $thisurl=&deversion($thisurl);
11641: $thisfn=&deversion($thisfn);
11642:
11643: my %bighash;
11644: my $okay=0;
11645:
11646: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11647: &GDBM_READER(),0640)) {
11648: my $noclutter;
11649: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
11650: $thisurl =~ s/\?.+$//;
11651: if ($map =~ m{^uploaded/.+\.page$}) {
11652: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
11653: $thisurl =~ s{^\Qhttp://https://\E}{https://};
11654: $noclutter = 1;
11655: }
11656: }
11657: my $ids;
11658: if ($noclutter) {
11659: $ids=$bighash{'ids_'.$thisurl};
11660: } else {
11661: $ids=$bighash{'ids_'.&clutter($thisurl)};
11662: }
11663: unless ($ids) {
11664: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
11665: $ids=$bighash{$idkey};
11666: }
11667: if ($ids) {
11668: # ------------------------------------------------------------------- Has ID(s)
11669: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
11670: $symb =~ s/\?.+$//;
11671: }
11672: foreach my $id (split(/\,/,$ids)) {
11673: my ($mapid,$resid)=split(/\./,$id);
11674: if (
11675: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
11676: eq $symb) {
11677: if (ref($encstate)) {
11678: $$encstate = $bighash{'encrypted_'.$id};
11679: }
11680: if (($env{'request.role.adv'}) ||
11681: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
11682: ($thisurl eq '/adm/navmaps')) {
11683: $okay=1;
11684: last;
11685: }
11686: }
11687: }
11688: }
11689: untie(%bighash);
11690: }
11691: return $okay;
11692: }
11693:
11694: # --------------------------------------------------------------- Clean-up symb
11695:
11696: sub symbclean {
11697: my $symb=shift;
11698: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11699: # remove version from map
11700: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
11701:
11702: # remove version from URL
11703: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
11704:
11705: # remove wrapper
11706:
11707: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
11708: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
11709: return $symb;
11710: }
11711:
11712: # ---------------------------------------------- Split symb to find map and url
11713:
11714: sub encode_symb {
11715: my ($map,$resid,$url)=@_;
11716: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
11717: }
11718:
11719: sub decode_symb {
11720: my $symb=shift;
11721: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11722: my ($map,$resid,$url)=split(/___/,$symb);
11723: return (&fixversion($map),$resid,&fixversion($url));
11724: }
11725:
11726: sub fixversion {
11727: my $fn=shift;
11728: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
11729: my %bighash;
11730: my $uri=&clutter($fn);
11731: my $key=$env{'request.course.id'}.'_'.$uri;
11732: # is this cached?
11733: my ($result,$cached)=&is_cached_new('courseresversion',$key);
11734: if (defined($cached)) { return $result; }
11735: # unfortunately not cached, or expired
11736: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11737: &GDBM_READER(),0640)) {
11738: if ($bighash{'version_'.$uri}) {
11739: my $version=$bighash{'version_'.$uri};
11740: unless (($version eq 'mostrecent') ||
11741: ($version==&getversion($uri))) {
11742: $uri=~s/\.(\w+)$/\.$version\.$1/;
11743: }
11744: }
11745: untie %bighash;
11746: }
11747: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
11748: }
11749:
11750: sub deversion {
11751: my $url=shift;
11752: $url=~s/\.\d+\.(\w+)$/\.$1/;
11753: return $url;
11754: }
11755:
11756: # ------------------------------------------------------ Return symb list entry
11757:
11758: sub symbread {
11759: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
11760: my $cache_str='request.symbread.cached.'.$thisfn;
11761: if (defined($env{$cache_str})) {
11762: if ($ignorecachednull) {
11763: return $env{$cache_str} unless ($env{$cache_str} eq '');
11764: } else {
11765: return $env{$cache_str};
11766: }
11767: }
11768: # no filename provided? try from environment
11769: unless ($thisfn) {
11770: if ($env{'request.symb'}) {
11771: return $env{$cache_str}=&symbclean($env{'request.symb'});
11772: }
11773: $thisfn=$env{'request.filename'};
11774: }
11775: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11776: # is that filename actually a symb? Verify, clean, and return
11777: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
11778: if (&symbverify($thisfn,$1)) {
11779: return $env{$cache_str}=&symbclean($thisfn);
11780: }
11781: }
11782: $thisfn=declutter($thisfn);
11783: my %hash;
11784: my %bighash;
11785: my $syval='';
11786: if (($env{'request.course.fn'}) && ($thisfn)) {
11787: my $targetfn = $thisfn;
11788: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
11789: $targetfn = 'adm/wrapper/'.$thisfn;
11790: }
11791: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
11792: $targetfn=$1;
11793: }
11794: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11795: &GDBM_READER(),0640)) {
11796: $syval=$hash{$targetfn};
11797: untie(%hash);
11798: }
11799: # ---------------------------------------------------------- There was an entry
11800: if ($syval) {
11801: #unless ($syval=~/\_\d+$/) {
11802: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
11803: #&appenv({'request.ambiguous' => $thisfn});
11804: #return $env{$cache_str}='';
11805: #}
11806: #$syval.=$1;
11807: #}
11808: } else {
11809: # ------------------------------------------------------- Was not in symb table
11810: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11811: &GDBM_READER(),0640)) {
11812: # ---------------------------------------------- Get ID(s) for current resource
11813: my $ids=$bighash{'ids_'.&clutter($thisfn)};
11814: unless ($ids) {
11815: $ids=$bighash{'ids_/'.$thisfn};
11816: }
11817: unless ($ids) {
11818: # alias?
11819: $ids=$bighash{'mapalias_'.$thisfn};
11820: }
11821: if ($ids) {
11822: # ------------------------------------------------------------------- Has ID(s)
11823: my @possibilities=split(/\,/,$ids);
11824: if ($#possibilities==0) {
11825: # ----------------------------------------------- There is only one possibility
11826: my ($mapid,$resid)=split(/\./,$ids);
11827: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11828: $resid,$thisfn);
11829: if (ref($possibles) eq 'HASH') {
11830: $possibles->{$syval} = 1;
11831: }
11832: if ($checkforblock) {
11833: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
11834: if (@blockers) {
11835: $syval = '';
11836: return;
11837: }
11838: }
11839: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11840: # ------------------------------------------ There is more than one possibility
11841: my $realpossible=0;
11842: foreach my $id (@possibilities) {
11843: my $file=$bighash{'src_'.$id};
11844: my $canaccess;
11845: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11846: $canaccess = 1;
11847: } else {
11848: $canaccess = &allowed('bre',$file);
11849: }
11850: if ($canaccess) {
11851: my ($mapid,$resid)=split(/\./,$id);
11852: if ($bighash{'map_type_'.$mapid} ne 'page') {
11853: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
11854: $resid,$thisfn);
11855: if (ref($possibles) eq 'HASH') {
11856: $possibles->{$syval} = 1;
11857: }
11858: if ($checkforblock) {
11859: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
11860: unless (@blockers > 0) {
11861: $syval = $poss_syval;
11862: $realpossible++;
11863: }
11864: } else {
11865: $syval = $poss_syval;
11866: $realpossible++;
11867: }
11868: }
11869: }
11870: }
11871: if ($realpossible!=1) { $syval=''; }
11872: } else {
11873: $syval='';
11874: }
11875: }
11876: untie(%bighash);
11877: }
11878: }
11879: if ($syval) {
11880: return $env{$cache_str}=$syval;
11881: }
11882: }
11883: &appenv({'request.ambiguous' => $thisfn});
11884: return $env{$cache_str}='';
11885: }
11886:
11887: # ---------------------------------------------------------- Return random seed
11888:
11889: sub numval {
11890: my $txt=shift;
11891: $txt=~tr/A-J/0-9/;
11892: $txt=~tr/a-j/0-9/;
11893: $txt=~tr/K-T/0-9/;
11894: $txt=~tr/k-t/0-9/;
11895: $txt=~tr/U-Z/0-5/;
11896: $txt=~tr/u-z/0-5/;
11897: $txt=~s/\D//g;
11898: if ($_64bit) { if ($txt > 2**32) { return -1; } }
11899: return int($txt);
11900: }
11901:
11902: sub numval2 {
11903: my $txt=shift;
11904: $txt=~tr/A-J/0-9/;
11905: $txt=~tr/a-j/0-9/;
11906: $txt=~tr/K-T/0-9/;
11907: $txt=~tr/k-t/0-9/;
11908: $txt=~tr/U-Z/0-5/;
11909: $txt=~tr/u-z/0-5/;
11910: $txt=~s/\D//g;
11911: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11912: my $total;
11913: foreach my $val (@txts) { $total+=$val; }
11914: if ($_64bit) { if ($total > 2**32) { return -1; } }
11915: return int($total);
11916: }
11917:
11918: sub numval3 {
11919: use integer;
11920: my $txt=shift;
11921: $txt=~tr/A-J/0-9/;
11922: $txt=~tr/a-j/0-9/;
11923: $txt=~tr/K-T/0-9/;
11924: $txt=~tr/k-t/0-9/;
11925: $txt=~tr/U-Z/0-5/;
11926: $txt=~tr/u-z/0-5/;
11927: $txt=~s/\D//g;
11928: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11929: my $total;
11930: foreach my $val (@txts) { $total+=$val; }
11931: if ($_64bit) { $total=(($total<<32)>>32); }
11932: return $total;
11933: }
11934:
11935: sub digest {
11936: my ($data)=@_;
11937: my $digest=&Digest::MD5::md5($data);
11938: my ($a,$b,$c,$d)=unpack("iiii",$digest);
11939: my ($e,$f);
11940: {
11941: use integer;
11942: $e=($a+$b);
11943: $f=($c+$d);
11944: if ($_64bit) {
11945: $e=(($e<<32)>>32);
11946: $f=(($f<<32)>>32);
11947: }
11948: }
11949: if (wantarray) {
11950: return ($e,$f);
11951: } else {
11952: my $g;
11953: {
11954: use integer;
11955: $g=($e+$f);
11956: if ($_64bit) {
11957: $g=(($g<<32)>>32);
11958: }
11959: }
11960: return $g;
11961: }
11962: }
11963:
11964: sub latest_rnd_algorithm_id {
11965: return '64bit5';
11966: }
11967:
11968: sub get_rand_alg {
11969: my ($courseid)=@_;
11970: if (!$courseid) { $courseid=(&whichuser())[1]; }
11971: if ($courseid) {
11972: return $env{"course.$courseid.rndseed"};
11973: }
11974: return &latest_rnd_algorithm_id();
11975: }
11976:
11977: sub validCODE {
11978: my ($CODE)=@_;
11979: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
11980: return 0;
11981: }
11982:
11983: sub getCODE {
11984: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
11985: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
11986: defined($Apache::lonhomework::parsing_a_task) ) &&
11987: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
11988: return $Apache::lonhomework::history{'resource.CODE'};
11989: }
11990: return undef;
11991: }
11992: #
11993: # Determines the random seed for a specific context:
11994: #
11995: # parameters:
11996: # symb - in course context the symb for the seed.
11997: # course_id - The course id of the form domain_coursenum.
11998: # domain - Domain for the user.
11999: # course - Course for the user.
12000: # cenv - environment of the course.
12001: #
12002: # NOTE:
12003: # All parameters are picked out of the environment if missing
12004: # or not defined.
12005: # If a symb cannot be determined the current time is used instead.
12006: #
12007: # For a given well defined symb, courside, domain, username,
12008: # and course environment, the seed is reproducible.
12009: #
12010: sub rndseed {
12011: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12012: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12013: if (!defined($symb)) {
12014: unless ($symb=$wsymb) { return time; }
12015: }
12016: if (!defined $courseid) {
12017: $courseid=$wcourseid;
12018: }
12019: if (!defined $domain) { $domain=$wdomain; }
12020: if (!defined $username) { $username=$wusername }
12021:
12022: my $which;
12023: if (defined($cenv->{'rndseed'})) {
12024: $which = $cenv->{'rndseed'};
12025: } else {
12026: $which =&get_rand_alg($courseid);
12027: }
12028: if (defined(&getCODE())) {
12029: if ($which eq '64bit5') {
12030: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12031: } elsif ($which eq '64bit4') {
12032: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12033: } else {
12034: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12035: }
12036: } elsif ($which eq '64bit5') {
12037: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12038: } elsif ($which eq '64bit4') {
12039: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12040: } elsif ($which eq '64bit3') {
12041: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12042: } elsif ($which eq '64bit2') {
12043: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12044: } elsif ($which eq '64bit') {
12045: return &rndseed_64bit($symb,$courseid,$domain,$username);
12046: }
12047: return &rndseed_32bit($symb,$courseid,$domain,$username);
12048: }
12049:
12050: sub rndseed_32bit {
12051: my ($symb,$courseid,$domain,$username)=@_;
12052: {
12053: use integer;
12054: my $symbchck=unpack("%32C*",$symb) << 27;
12055: my $symbseed=numval($symb) << 22;
12056: my $namechck=unpack("%32C*",$username) << 17;
12057: my $nameseed=numval($username) << 12;
12058: my $domainseed=unpack("%32C*",$domain) << 7;
12059: my $courseseed=unpack("%32C*",$courseid);
12060: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12061: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12062: #&logthis("rndseed :$num:$symb");
12063: if ($_64bit) { $num=(($num<<32)>>32); }
12064: return $num;
12065: }
12066: }
12067:
12068: sub rndseed_64bit {
12069: my ($symb,$courseid,$domain,$username)=@_;
12070: {
12071: use integer;
12072: my $symbchck=unpack("%32S*",$symb) << 21;
12073: my $symbseed=numval($symb) << 10;
12074: my $namechck=unpack("%32S*",$username);
12075:
12076: my $nameseed=numval($username) << 21;
12077: my $domainseed=unpack("%32S*",$domain) << 10;
12078: my $courseseed=unpack("%32S*",$courseid);
12079:
12080: my $num1=$symbchck+$symbseed+$namechck;
12081: my $num2=$nameseed+$domainseed+$courseseed;
12082: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12083: #&logthis("rndseed :$num:$symb");
12084: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12085: return "$num1,$num2";
12086: }
12087: }
12088:
12089: sub rndseed_64bit2 {
12090: my ($symb,$courseid,$domain,$username)=@_;
12091: {
12092: use integer;
12093: # strings need to be an even # of cahracters long, it it is odd the
12094: # last characters gets thrown away
12095: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12096: my $symbseed=numval($symb) << 10;
12097: my $namechck=unpack("%32S*",$username.' ');
12098:
12099: my $nameseed=numval($username) << 21;
12100: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12101: my $courseseed=unpack("%32S*",$courseid.' ');
12102:
12103: my $num1=$symbchck+$symbseed+$namechck;
12104: my $num2=$nameseed+$domainseed+$courseseed;
12105: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12106: #&logthis("rndseed :$num:$symb");
12107: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12108: return "$num1,$num2";
12109: }
12110: }
12111:
12112: sub rndseed_64bit3 {
12113: my ($symb,$courseid,$domain,$username)=@_;
12114: {
12115: use integer;
12116: # strings need to be an even # of cahracters long, it it is odd the
12117: # last characters gets thrown away
12118: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12119: my $symbseed=numval2($symb) << 10;
12120: my $namechck=unpack("%32S*",$username.' ');
12121:
12122: my $nameseed=numval2($username) << 21;
12123: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12124: my $courseseed=unpack("%32S*",$courseid.' ');
12125:
12126: my $num1=$symbchck+$symbseed+$namechck;
12127: my $num2=$nameseed+$domainseed+$courseseed;
12128: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12129: #&logthis("rndseed :$num1:$num2:$_64bit");
12130: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12131:
12132: return "$num1:$num2";
12133: }
12134: }
12135:
12136: sub rndseed_64bit4 {
12137: my ($symb,$courseid,$domain,$username)=@_;
12138: {
12139: use integer;
12140: # strings need to be an even # of cahracters long, it it is odd the
12141: # last characters gets thrown away
12142: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12143: my $symbseed=numval3($symb) << 10;
12144: my $namechck=unpack("%32S*",$username.' ');
12145:
12146: my $nameseed=numval3($username) << 21;
12147: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12148: my $courseseed=unpack("%32S*",$courseid.' ');
12149:
12150: my $num1=$symbchck+$symbseed+$namechck;
12151: my $num2=$nameseed+$domainseed+$courseseed;
12152: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12153: #&logthis("rndseed :$num1:$num2:$_64bit");
12154: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12155:
12156: return "$num1:$num2";
12157: }
12158: }
12159:
12160: sub rndseed_64bit5 {
12161: my ($symb,$courseid,$domain,$username)=@_;
12162: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
12163: return "$num1:$num2";
12164: }
12165:
12166: sub rndseed_CODE_64bit {
12167: my ($symb,$courseid,$domain,$username)=@_;
12168: {
12169: use integer;
12170: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12171: my $symbseed=numval2($symb);
12172: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12173: my $CODEseed=numval(&getCODE());
12174: my $courseseed=unpack("%32S*",$courseid.' ');
12175: my $num1=$symbseed+$CODEchck;
12176: my $num2=$CODEseed+$courseseed+$symbchck;
12177: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12178: #&logthis("rndseed :$num1:$num2:$symb");
12179: if ($_64bit) { $num1=(($num1<<32)>>32); }
12180: if ($_64bit) { $num2=(($num2<<32)>>32); }
12181: return "$num1:$num2";
12182: }
12183: }
12184:
12185: sub rndseed_CODE_64bit4 {
12186: my ($symb,$courseid,$domain,$username)=@_;
12187: {
12188: use integer;
12189: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12190: my $symbseed=numval3($symb);
12191: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12192: my $CODEseed=numval3(&getCODE());
12193: my $courseseed=unpack("%32S*",$courseid.' ');
12194: my $num1=$symbseed+$CODEchck;
12195: my $num2=$CODEseed+$courseseed+$symbchck;
12196: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
12197: #&logthis("rndseed :$num1:$num2:$symb");
12198: if ($_64bit) { $num1=(($num1<<32)>>32); }
12199: if ($_64bit) { $num2=(($num2<<32)>>32); }
12200: return "$num1:$num2";
12201: }
12202: }
12203:
12204: sub rndseed_CODE_64bit5 {
12205: my ($symb,$courseid,$domain,$username)=@_;
12206: my $code = &getCODE();
12207: my ($num1,$num2)=&digest("$symb,$courseid,$code");
12208: return "$num1:$num2";
12209: }
12210:
12211: sub setup_random_from_rndseed {
12212: my ($rndseed)=@_;
12213: if ($rndseed =~/([,:])/) {
12214: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
12215: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
12216: &Math::Random::random_set_seed_from_phrase($rndseed);
12217: } else {
12218: &Math::Random::random_set_seed($num1,$num2);
12219: }
12220: } else {
12221: &Math::Random::random_set_seed_from_phrase($rndseed);
12222: }
12223: }
12224:
12225: sub latest_receipt_algorithm_id {
12226: return 'receipt3';
12227: }
12228:
12229: sub recunique {
12230: my $fucourseid=shift;
12231: my $unique;
12232: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
12233: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12234: $unique=$env{"course.$fucourseid.internal.encseed"};
12235: } else {
12236: $unique=$perlvar{'lonReceipt'};
12237: }
12238: return unpack("%32C*",$unique);
12239: }
12240:
12241: sub recprefix {
12242: my $fucourseid=shift;
12243: my $prefix;
12244: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
12245: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12246: $prefix=$env{"course.$fucourseid.internal.encpref"};
12247: } else {
12248: $prefix=$perlvar{'lonHostID'};
12249: }
12250: return unpack("%32C*",$prefix);
12251: }
12252:
12253: sub ireceipt {
12254: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
12255:
12256: my $return =&recprefix($fucourseid).'-';
12257:
12258: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
12259: $env{'request.state'} eq 'construct') {
12260: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
12261: return $return;
12262: }
12263:
12264: my $cuname=unpack("%32C*",$funame);
12265: my $cudom=unpack("%32C*",$fudom);
12266: my $cucourseid=unpack("%32C*",$fucourseid);
12267: my $cusymb=unpack("%32C*",$fusymb);
12268: my $cunique=&recunique($fucourseid);
12269: my $cpart=unpack("%32S*",$part);
12270: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
12271:
12272: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
12273:
12274: $return.= ($cunique%$cuname+
12275: $cunique%$cudom+
12276: $cusymb%$cuname+
12277: $cusymb%$cudom+
12278: $cucourseid%$cuname+
12279: $cucourseid%$cudom+
12280: $cpart%$cuname+
12281: $cpart%$cudom);
12282: } else {
12283: $return.= ($cunique%$cuname+
12284: $cunique%$cudom+
12285: $cusymb%$cuname+
12286: $cusymb%$cudom+
12287: $cucourseid%$cuname+
12288: $cucourseid%$cudom);
12289: }
12290: return $return;
12291: }
12292:
12293: sub receipt {
12294: my ($part)=@_;
12295: my ($symb,$courseid,$domain,$name) = &whichuser();
12296: return &ireceipt($name,$domain,$courseid,$symb,$part);
12297: }
12298:
12299: sub whichuser {
12300: my ($passedsymb)=@_;
12301: my ($symb,$courseid,$domain,$name,$publicuser);
12302: if (defined($env{'form.grade_symb'})) {
12303: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
12304: my $allowed=&allowed('vgr',$tmp_courseid);
12305: if (!$allowed &&
12306: exists($env{'request.course.sec'}) &&
12307: $env{'request.course.sec'} !~ /^\s*$/) {
12308: $allowed=&allowed('vgr',$tmp_courseid.
12309: '/'.$env{'request.course.sec'});
12310: }
12311: if ($allowed) {
12312: ($symb)=&get_env_multiple('form.grade_symb');
12313: $courseid=$tmp_courseid;
12314: ($domain)=&get_env_multiple('form.grade_domain');
12315: ($name)=&get_env_multiple('form.grade_username');
12316: return ($symb,$courseid,$domain,$name,$publicuser);
12317: }
12318: }
12319: if (!$passedsymb) {
12320: $symb=&symbread();
12321: } else {
12322: $symb=$passedsymb;
12323: }
12324: $courseid=$env{'request.course.id'};
12325: $domain=$env{'user.domain'};
12326: $name=$env{'user.name'};
12327: if ($name eq 'public' && $domain eq 'public') {
12328: if (!defined($env{'form.username'})) {
12329: $env{'form.username'}.=time.rand(10000000);
12330: }
12331: $name.=$env{'form.username'};
12332: }
12333: return ($symb,$courseid,$domain,$name,$publicuser);
12334:
12335: }
12336:
12337: # ------------------------------------------------------------ Serves up a file
12338: # returns either the contents of the file or
12339: # -1 if the file doesn't exist
12340: #
12341: # if the target is a file that was uploaded via DOCS,
12342: # a check will be made to see if a current copy exists on the local server,
12343: # if it does this will be served, otherwise a copy will be retrieved from
12344: # the home server for the course and stored in /home/httpd/html/userfiles on
12345: # the local server.
12346:
12347: sub getfile {
12348: my ($file) = @_;
12349: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
12350: &repcopy($file);
12351: return &readfile($file);
12352: }
12353:
12354: sub repcopy_userfile {
12355: my ($file)=@_;
12356: my $londocroot = $perlvar{'lonDocRoot'};
12357: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
12358: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
12359: my ($cdom,$cnum,$filename) =
12360: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
12361: my $uri="/uploaded/$cdom/$cnum/$filename";
12362: if (-e "$file") {
12363: # we already have a local copy, check it out
12364: my @fileinfo = stat($file);
12365: my $rtncode;
12366: my $info;
12367: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
12368: if ($lwpresp ne 'ok') {
12369: # there is no such file anymore, even though we had a local copy
12370: if ($rtncode eq '404') {
12371: unlink($file);
12372: }
12373: return -1;
12374: }
12375: if ($info < $fileinfo[9]) {
12376: # nice, the file we have is up-to-date, just say okay
12377: return 'ok';
12378: } else {
12379: # the file is outdated, get rid of it
12380: unlink($file);
12381: }
12382: }
12383: # one way or the other, at this point, we don't have the file
12384: # construct the correct path for the file
12385: my @parts = ($cdom,$cnum);
12386: if ($filename =~ m|^(.+)/[^/]+$|) {
12387: push @parts, split(/\//,$1);
12388: }
12389: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
12390: foreach my $part (@parts) {
12391: $path .= '/'.$part;
12392: if (!-e $path) {
12393: mkdir($path,0770);
12394: }
12395: }
12396: # now the path exists for sure
12397: # get a user agent
12398: my $ua=new LWP::UserAgent;
12399: my $transferfile=$file.'.in.transfer';
12400: # FIXME: this should flock
12401: if (-e $transferfile) { return 'ok'; }
12402: my $request;
12403: $uri=~s/^\///;
12404: my $homeserver = &homeserver($cnum,$cdom);
12405: my $protocol = $protocol{$homeserver};
12406: $protocol = 'http' if ($protocol ne 'https');
12407: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
12408: my $response=$ua->request($request,$transferfile);
12409: # did it work?
12410: if ($response->is_error()) {
12411: unlink($transferfile);
12412: &logthis("Userfile repcopy failed for $uri");
12413: return -1;
12414: }
12415: # worked, rename the transfer file
12416: rename($transferfile,$file);
12417: return 'ok';
12418: }
12419:
12420: sub tokenwrapper {
12421: my $uri=shift;
12422: $uri=~s|^https?\://([^/]+)||;
12423: $uri=~s|^/||;
12424: $env{'user.environment'}=~/\/([^\/]+)\.id/;
12425: my $token=$1;
12426: my (undef,$udom,$uname,$file)=split('/',$uri,4);
12427: if ($udom && $uname && $file) {
12428: $file=~s|(\?\.*)*$||;
12429: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
12430: my $homeserver = &homeserver($uname,$udom);
12431: my $protocol = $protocol{$homeserver};
12432: $protocol = 'http' if ($protocol ne 'https');
12433: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
12434: (($uri=~/\?/)?'&':'?').'token='.$token.
12435: '&tokenissued='.$perlvar{'lonHostID'};
12436: } else {
12437: return '/adm/notfound.html';
12438: }
12439: }
12440:
12441: # call with reqtype HEAD: get last modification time
12442: # call with reqtype GET: get the file contents
12443: # Do not call this with reqtype GET for large files! It loads everything into memory
12444: #
12445: sub getuploaded {
12446: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
12447: $uri=~s/^\///;
12448: my $homeserver = &homeserver($cnum,$cdom);
12449: my $protocol = $protocol{$homeserver};
12450: $protocol = 'http' if ($protocol ne 'https');
12451: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
12452: my $ua=new LWP::UserAgent;
12453: my $request=new HTTP::Request($reqtype,$uri);
12454: my $response=$ua->request($request);
12455: $$rtncode = $response->code;
12456: if (! $response->is_success()) {
12457: return 'failed';
12458: }
12459: if ($reqtype eq 'HEAD') {
12460: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
12461: } elsif ($reqtype eq 'GET') {
12462: $$info = $response->content;
12463: }
12464: return 'ok';
12465: }
12466:
12467: sub readfile {
12468: my $file = shift;
12469: if ( (! -e $file ) || ($file eq '') ) { return -1; };
12470: my $fh;
12471: open($fh,"<",$file);
12472: my $a='';
12473: while (my $line = <$fh>) { $a .= $line; }
12474: return $a;
12475: }
12476:
12477: sub filelocation {
12478: my ($dir,$file) = @_;
12479: my $location;
12480: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
12481:
12482: if ($file =~ m-^/adm/-) {
12483: $file=~s-^/adm/wrapper/-/-;
12484: $file=~s-^/adm/coursedocs/showdoc/-/-;
12485: }
12486:
12487: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
12488: $location = $file;
12489: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
12490: my ($udom,$uname,$filename)=
12491: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
12492: my $home=&homeserver($uname,$udom);
12493: my $is_me=0;
12494: my @ids=¤t_machine_ids();
12495: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
12496: if ($is_me) {
12497: $location=propath($udom,$uname).'/userfiles/'.$filename;
12498: } else {
12499: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
12500: $udom.'/'.$uname.'/'.$filename;
12501: }
12502: } elsif ($file =~ m-^/adm/-) {
12503: $location = $perlvar{'lonDocRoot'}.'/'.$file;
12504: } else {
12505: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
12506: $file=~s:^/(res|priv)/:/:;
12507: my $space=$1;
12508: if ( !( $file =~ m:^/:) ) {
12509: $location = $dir. '/'.$file;
12510: } else {
12511: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
12512: }
12513: }
12514: $location=~s://+:/:g; # remove duplicate /
12515: while ($location=~m{/\.\./}) {
12516: if ($location =~ m{/[^/]+/\.\./}) {
12517: $location=~ s{/[^/]+/\.\./}{/}g;
12518: } else {
12519: $location=~ s{/\.\./}{/}g;
12520: }
12521: } #remove dir/..
12522: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
12523: return $location;
12524: }
12525:
12526: sub hreflocation {
12527: my ($dir,$file)=@_;
12528: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
12529: $file=filelocation($dir,$file);
12530: } elsif ($file=~m-^/adm/-) {
12531: $file=~s-^/adm/wrapper/-/-;
12532: $file=~s-^/adm/coursedocs/showdoc/-/-;
12533: }
12534: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
12535: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
12536: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
12537: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
12538: {/uploaded/$1/$2/}x;
12539: }
12540: if ($file=~ m{^/userfiles/}) {
12541: $file =~ s{^/userfiles/}{/uploaded/};
12542: }
12543: return $file;
12544: }
12545:
12546:
12547:
12548:
12549:
12550: sub current_machine_domains {
12551: return &machine_domains(&hostname($perlvar{'lonHostID'}));
12552: }
12553:
12554: sub machine_domains {
12555: my ($hostname) = @_;
12556: my @domains;
12557: my %hostname = &all_hostnames();
12558: while( my($id, $name) = each(%hostname)) {
12559: # &logthis("-$id-$name-$hostname-");
12560: if ($hostname eq $name) {
12561: push(@domains,&host_domain($id));
12562: }
12563: }
12564: return @domains;
12565: }
12566:
12567: sub current_machine_ids {
12568: return &machine_ids(&hostname($perlvar{'lonHostID'}));
12569: }
12570:
12571: sub machine_ids {
12572: my ($hostname) = @_;
12573: $hostname ||= &hostname($perlvar{'lonHostID'});
12574: my @ids;
12575: my %name_to_host = &all_names();
12576: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
12577: return @{ $name_to_host{$hostname} };
12578: }
12579: return;
12580: }
12581:
12582: sub additional_machine_domains {
12583: my @domains;
12584: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
12585: while( my $line = <$fh>) {
12586: $line =~ s/\s//g;
12587: push(@domains,$line);
12588: }
12589: return @domains;
12590: }
12591:
12592: sub default_login_domain {
12593: my $domain = $perlvar{'lonDefDomain'};
12594: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
12595: foreach my $posdom (¤t_machine_domains(),
12596: &additional_machine_domains()) {
12597: if (lc($posdom) eq lc($testdomain)) {
12598: $domain=$posdom;
12599: last;
12600: }
12601: }
12602: return $domain;
12603: }
12604:
12605: # ------------------------------------------------------------- Declutters URLs
12606:
12607: sub declutter {
12608: my $thisfn=shift;
12609: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12610: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
12611: $thisfn=~s{^/home/httpd/html}{};
12612: }
12613: $thisfn=~s/^\///;
12614: $thisfn=~s|^adm/wrapper/||;
12615: $thisfn=~s|^adm/coursedocs/showdoc/||;
12616: $thisfn=~s/^res\///;
12617: $thisfn=~s/^priv\///;
12618: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
12619: $thisfn=~s/\?.+$//;
12620: }
12621: return $thisfn;
12622: }
12623:
12624: # ------------------------------------------------------------- Clutter up URLs
12625:
12626: sub clutter {
12627: my $thisfn='/'.&declutter(shift);
12628: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
12629: || $thisfn =~ m{^/adm/(includes|pages)} ) {
12630: $thisfn='/res'.$thisfn;
12631: }
12632: if ($thisfn !~m|^/adm|) {
12633: if ($thisfn =~ m|^/ext/|) {
12634: $thisfn='/adm/wrapper'.$thisfn;
12635: } else {
12636: my ($ext) = ($thisfn =~ /\.(\w+)$/);
12637: my $embstyle=&Apache::loncommon::fileembstyle($ext);
12638: if ($embstyle eq 'ssi'
12639: || ($embstyle eq 'hdn')
12640: || ($embstyle eq 'rat')
12641: || ($embstyle eq 'prv')
12642: || ($embstyle eq 'ign')) {
12643: #do nothing with these
12644: } elsif (($embstyle eq 'img')
12645: || ($embstyle eq 'emb')
12646: || ($embstyle eq 'wrp')) {
12647: $thisfn='/adm/wrapper'.$thisfn;
12648: } elsif ($embstyle eq 'unk'
12649: && $thisfn!~/\.(sequence|page)$/) {
12650: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
12651: } else {
12652: # &logthis("Got a blank emb style");
12653: }
12654: }
12655: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
12656: $thisfn='/adm/wrapper'.$thisfn;
12657: }
12658: return $thisfn;
12659: }
12660:
12661: sub clutter_with_no_wrapper {
12662: my $uri = &clutter(shift);
12663: if ($uri =~ m-^/adm/-) {
12664: $uri =~ s-^/adm/wrapper/-/-;
12665: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
12666: }
12667: return $uri;
12668: }
12669:
12670: sub freeze_escape {
12671: my ($value)=@_;
12672: if (ref($value)) {
12673: $value=&nfreeze($value);
12674: return '__FROZEN__'.&escape($value);
12675: }
12676: return &escape($value);
12677: }
12678:
12679:
12680: sub thaw_unescape {
12681: my ($value)=@_;
12682: if ($value =~ /^__FROZEN__/) {
12683: substr($value,0,10,undef);
12684: $value=&unescape($value);
12685: return &thaw($value);
12686: }
12687: return &unescape($value);
12688: }
12689:
12690: sub correct_line_ends {
12691: my ($result)=@_;
12692: $$result =~s/\r\n/\n/mg;
12693: $$result =~s/\r/\n/mg;
12694: }
12695: # ================================================================ Main Program
12696:
12697: sub goodbye {
12698: &logthis("Starting Shut down");
12699: #not converted to using infrastruture and probably shouldn't be
12700: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
12701: #converted
12702: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
12703: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
12704: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
12705: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
12706: #1.1 only
12707: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
12708: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
12709: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
12710: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
12711: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
12712: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
12713: &logthis(sprintf("%-20s is %s",'hits',$hits));
12714: &flushcourselogs();
12715: &logthis("Shutting down");
12716: }
12717:
12718: sub get_dns {
12719: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
12720: if (!$ignore_cache) {
12721: my ($content,$cached)=
12722: &Apache::lonnet::is_cached_new('dns',$url);
12723: if ($cached) {
12724: &$func($content,$hashref);
12725: return;
12726: }
12727: }
12728:
12729: my %alldns;
12730: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
12731: foreach my $dns (<$config>) {
12732: next if ($dns !~ /^\^(\S*)/x);
12733: my $line = $1;
12734: my ($host,$protocol) = split(/:/,$line);
12735: if ($protocol ne 'https') {
12736: $protocol = 'http';
12737: }
12738: $alldns{$host} = $protocol;
12739: }
12740: while (%alldns) {
12741: my ($dns) = sort { $b cmp $a } keys(%alldns);
12742: my $ua=new LWP::UserAgent;
12743: $ua->timeout(30);
12744: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
12745: my $response=$ua->request($request);
12746: delete($alldns{$dns});
12747: next if ($response->is_error());
12748: my @content = split("\n",$response->content);
12749: unless ($nocache) {
12750: &do_cache_new('dns',$url,\@content,30*24*60*60);
12751: }
12752: &$func(\@content,$hashref);
12753: return;
12754: }
12755: close($config);
12756: my $which = (split('/',$url))[3];
12757: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
12758: open($config,"<","$perlvar{'lonTabDir'}/dns_$which.tab");
12759: my @content = <$config>;
12760: &$func(\@content,$hashref);
12761: return;
12762: }
12763:
12764: # ------------------------------------------------------Get DNS checksums file
12765: sub parse_dns_checksums_tab {
12766: my ($lines,$hashref) = @_;
12767: my $lonhost = $perlvar{'lonHostID'};
12768: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
12769: my $loncaparev = &get_server_loncaparev($machine_dom);
12770: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
12771: my $webconfdir = '/etc/httpd/conf';
12772: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
12773: $webconfdir = '/etc/apache2';
12774: } elsif ($distro =~ /^sles(\d+)$/) {
12775: if ($1 >= 10) {
12776: $webconfdir = '/etc/apache2';
12777: }
12778: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
12779: if ($1 >= 10.0) {
12780: $webconfdir = '/etc/apache2';
12781: }
12782: }
12783: my ($release,$timestamp) = split(/\-/,$loncaparev);
12784: my (%chksum,%revnum);
12785: if (ref($lines) eq 'ARRAY') {
12786: chomp(@{$lines});
12787: my $version = shift(@{$lines});
12788: if ($version eq $release) {
12789: foreach my $line (@{$lines}) {
12790: my ($file,$version,$shasum) = split(/,/,$line);
12791: if ($file =~ m{^/etc/httpd/conf}) {
12792: if ($webconfdir eq '/etc/apache2') {
12793: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
12794: }
12795: }
12796: $chksum{$file} = $shasum;
12797: $revnum{$file} = $version;
12798: }
12799: if (ref($hashref) eq 'HASH') {
12800: %{$hashref} = (
12801: sums => \%chksum,
12802: versions => \%revnum,
12803: );
12804: }
12805: }
12806: }
12807: return;
12808: }
12809:
12810: sub fetch_dns_checksums {
12811: my %checksums;
12812: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
12813: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
12814: my ($release,$timestamp) = split(/\-/,$loncaparev);
12815: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
12816: \%checksums);
12817: return \%checksums;
12818: }
12819:
12820: # ------------------------------------------------------------ Read domain file
12821: {
12822: my $loaded;
12823: my %domain;
12824:
12825: sub parse_domain_tab {
12826: my ($lines) = @_;
12827: foreach my $line (@$lines) {
12828: next if ($line =~ /^(\#|\s*$ )/x);
12829:
12830: chomp($line);
12831: my ($name,@elements) = split(/:/,$line,9);
12832: my %this_domain;
12833: foreach my $field ('description', 'auth_def', 'auth_arg_def',
12834: 'lang_def', 'city', 'longi', 'lati',
12835: 'primary') {
12836: $this_domain{$field} = shift(@elements);
12837: }
12838: $domain{$name} = \%this_domain;
12839: }
12840: }
12841:
12842: sub reset_domain_info {
12843: undef($loaded);
12844: undef(%domain);
12845: }
12846:
12847: sub load_domain_tab {
12848: my ($ignore_cache,$nocache) = @_;
12849: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
12850: my $fh;
12851: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
12852: my @lines = <$fh>;
12853: &parse_domain_tab(\@lines);
12854: }
12855: close($fh);
12856: $loaded = 1;
12857: }
12858:
12859: sub domain {
12860: &load_domain_tab() if (!$loaded);
12861:
12862: my ($name,$what) = @_;
12863: return if ( !exists($domain{$name}) );
12864:
12865: if (!$what) {
12866: return $domain{$name}{'description'};
12867: }
12868: return $domain{$name}{$what};
12869: }
12870:
12871: sub domain_info {
12872: &load_domain_tab() if (!$loaded);
12873: return %domain;
12874: }
12875:
12876: }
12877:
12878:
12879: # ------------------------------------------------------------- Read hosts file
12880: {
12881: my %hostname;
12882: my %hostdom;
12883: my %libserv;
12884: my $loaded;
12885: my %name_to_host;
12886: my %internetdom;
12887: my %LC_dns_serv;
12888:
12889: sub parse_hosts_tab {
12890: my ($file) = @_;
12891: foreach my $configline (@$file) {
12892: next if ($configline =~ /^(\#|\s*$ )/x);
12893: chomp($configline);
12894: if ($configline =~ /^\^/) {
12895: if ($configline =~ /^\^([\w.\-]+)/) {
12896: $LC_dns_serv{$1} = 1;
12897: }
12898: next;
12899: }
12900: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
12901: $name=~s/\s//g;
12902: if ($id && $domain && $role && $name) {
12903: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
12904: my $curr = $hostname{$id};
12905: my $skip;
12906: if (ref($name_to_host{$curr}) eq 'ARRAY') {
12907: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
12908: $skip = 1;
12909: } else {
12910: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
12911: }
12912: }
12913: unless ($skip) {
12914: push(@{$name_to_host{$name}},$id);
12915: }
12916: } else {
12917: push(@{$name_to_host{$name}},$id);
12918: }
12919: $hostname{$id}=$name;
12920: $hostdom{$id}=$domain;
12921: if ($role eq 'library') { $libserv{$id}=$name; }
12922: if (defined($protocol)) {
12923: if ($protocol eq 'https') {
12924: $protocol{$id} = $protocol;
12925: } else {
12926: $protocol{$id} = 'http';
12927: }
12928: } else {
12929: $protocol{$id} = 'http';
12930: }
12931: if (defined($intdom)) {
12932: $internetdom{$id} = $intdom;
12933: }
12934: }
12935: }
12936: }
12937:
12938: sub reset_hosts_info {
12939: &purge_remembered();
12940: &reset_domain_info();
12941: &reset_hosts_ip_info();
12942: undef(%name_to_host);
12943: undef(%hostname);
12944: undef(%hostdom);
12945: undef(%libserv);
12946: undef($loaded);
12947: }
12948:
12949: sub load_hosts_tab {
12950: my ($ignore_cache,$nocache) = @_;
12951: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
12952: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
12953: my @config = <$config>;
12954: &parse_hosts_tab(\@config);
12955: close($config);
12956: $loaded=1;
12957: }
12958:
12959: sub hostname {
12960: &load_hosts_tab() if (!$loaded);
12961:
12962: my ($lonid) = @_;
12963: return $hostname{$lonid};
12964: }
12965:
12966: sub all_hostnames {
12967: &load_hosts_tab() if (!$loaded);
12968:
12969: return %hostname;
12970: }
12971:
12972: sub all_names {
12973: my ($ignore_cache,$nocache) = @_;
12974: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
12975:
12976: return %name_to_host;
12977: }
12978:
12979: sub all_host_domain {
12980: &load_hosts_tab() if (!$loaded);
12981: return %hostdom;
12982: }
12983:
12984: sub is_library {
12985: &load_hosts_tab() if (!$loaded);
12986:
12987: return exists($libserv{$_[0]});
12988: }
12989:
12990: sub all_library {
12991: &load_hosts_tab() if (!$loaded);
12992:
12993: return %libserv;
12994: }
12995:
12996: sub unique_library {
12997: #2x reverse removes all hostnames that appear more than once
12998: my %unique = reverse &all_library();
12999: return reverse %unique;
13000: }
13001:
13002: sub get_servers {
13003: &load_hosts_tab() if (!$loaded);
13004:
13005: my ($domain,$type) = @_;
13006: my %possible_hosts = ($type eq 'library') ? %libserv
13007: : %hostname;
13008: my %result;
13009: if (ref($domain) eq 'ARRAY') {
13010: while ( my ($host,$hostname) = each(%possible_hosts)) {
13011: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
13012: $result{$host} = $hostname;
13013: }
13014: }
13015: } else {
13016: while ( my ($host,$hostname) = each(%possible_hosts)) {
13017: if ($hostdom{$host} eq $domain) {
13018: $result{$host} = $hostname;
13019: }
13020: }
13021: }
13022: return %result;
13023: }
13024:
13025: sub get_unique_servers {
13026: my %unique = reverse &get_servers(@_);
13027: return reverse %unique;
13028: }
13029:
13030: sub host_domain {
13031: &load_hosts_tab() if (!$loaded);
13032:
13033: my ($lonid) = @_;
13034: return $hostdom{$lonid};
13035: }
13036:
13037: sub all_domains {
13038: &load_hosts_tab() if (!$loaded);
13039:
13040: my %seen;
13041: my @uniq = grep(!$seen{$_}++, values(%hostdom));
13042: return @uniq;
13043: }
13044:
13045: sub internet_dom {
13046: &load_hosts_tab() if (!$loaded);
13047:
13048: my ($lonid) = @_;
13049: return $internetdom{$lonid};
13050: }
13051:
13052: sub is_LC_dns {
13053: &load_hosts_tab() if (!$loaded);
13054:
13055: my ($hostname) = @_;
13056: return exists($LC_dns_serv{$hostname});
13057: }
13058:
13059: }
13060:
13061: {
13062: my %iphost;
13063: my %name_to_ip;
13064: my %lonid_to_ip;
13065:
13066: sub get_hosts_from_ip {
13067: my ($ip) = @_;
13068: my %iphosts = &get_iphost();
13069: if (ref($iphosts{$ip})) {
13070: return @{$iphosts{$ip}};
13071: }
13072: return;
13073: }
13074:
13075: sub reset_hosts_ip_info {
13076: undef(%iphost);
13077: undef(%name_to_ip);
13078: undef(%lonid_to_ip);
13079: }
13080:
13081: sub get_host_ip {
13082: my ($lonid) = @_;
13083: if (exists($lonid_to_ip{$lonid})) {
13084: return $lonid_to_ip{$lonid};
13085: }
13086: my $name=&hostname($lonid);
13087: my $ip = gethostbyname($name);
13088: return if (!$ip || length($ip) ne 4);
13089: $ip=inet_ntoa($ip);
13090: $name_to_ip{$name} = $ip;
13091: $lonid_to_ip{$lonid} = $ip;
13092: return $ip;
13093: }
13094:
13095: sub get_iphost {
13096: my ($ignore_cache,$nocache) = @_;
13097:
13098: if (!$ignore_cache) {
13099: if (%iphost) {
13100: return %iphost;
13101: }
13102: my ($ip_info,$cached)=
13103: &Apache::lonnet::is_cached_new('iphost','iphost');
13104: if ($cached) {
13105: %iphost = %{$ip_info->[0]};
13106: %name_to_ip = %{$ip_info->[1]};
13107: %lonid_to_ip = %{$ip_info->[2]};
13108: return %iphost;
13109: }
13110: }
13111:
13112: # get yesterday's info for fallback
13113: my %old_name_to_ip;
13114: my ($ip_info,$cached)=
13115: &Apache::lonnet::is_cached_new('iphost','iphost');
13116: if ($cached) {
13117: %old_name_to_ip = %{$ip_info->[1]};
13118: }
13119:
13120: my %name_to_host = &all_names($ignore_cache,$nocache);
13121: foreach my $name (keys(%name_to_host)) {
13122: my $ip;
13123: if (!exists($name_to_ip{$name})) {
13124: $ip = gethostbyname($name);
13125: if (!$ip || length($ip) ne 4) {
13126: if (defined($old_name_to_ip{$name})) {
13127: $ip = $old_name_to_ip{$name};
13128: &logthis("Can't find $name defaulting to old $ip");
13129: } else {
13130: &logthis("Name $name no IP found");
13131: next;
13132: }
13133: } else {
13134: $ip=inet_ntoa($ip);
13135: }
13136: $name_to_ip{$name} = $ip;
13137: } else {
13138: $ip = $name_to_ip{$name};
13139: }
13140: foreach my $id (@{ $name_to_host{$name} }) {
13141: $lonid_to_ip{$id} = $ip;
13142: }
13143: push(@{$iphost{$ip}},@{$name_to_host{$name}});
13144: }
13145: unless ($nocache) {
13146: &do_cache_new('iphost','iphost',
13147: [\%iphost,\%name_to_ip,\%lonid_to_ip],
13148: 48*60*60);
13149: }
13150:
13151: return %iphost;
13152: }
13153:
13154: #
13155: # Given a DNS returns the loncapa host name for that DNS
13156: #
13157: sub host_from_dns {
13158: my ($dns) = @_;
13159: my @hosts;
13160: my $ip;
13161:
13162: if (exists($name_to_ip{$dns})) {
13163: $ip = $name_to_ip{$dns};
13164: }
13165: if (!$ip) {
13166: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
13167: if (length($ip) == 4) {
13168: $ip = &IO::Socket::inet_ntoa($ip);
13169: }
13170: }
13171: if ($ip) {
13172: @hosts = get_hosts_from_ip($ip);
13173: return $hosts[0];
13174: }
13175: return undef;
13176: }
13177:
13178: sub get_internet_names {
13179: my ($lonid) = @_;
13180: return if ($lonid eq '');
13181: my ($idnref,$cached)=
13182: &Apache::lonnet::is_cached_new('internetnames',$lonid);
13183: if ($cached) {
13184: return $idnref;
13185: }
13186: my $ip = &get_host_ip($lonid);
13187: my @hosts = &get_hosts_from_ip($ip);
13188: my %iphost = &get_iphost();
13189: my (@idns,%seen);
13190: foreach my $id (@hosts) {
13191: my $dom = &host_domain($id);
13192: my $prim_id = &domain($dom,'primary');
13193: my $prim_ip = &get_host_ip($prim_id);
13194: next if ($seen{$prim_ip});
13195: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
13196: foreach my $id (@{$iphost{$prim_ip}}) {
13197: my $intdom = &internet_dom($id);
13198: unless (grep(/^\Q$intdom\E$/,@idns)) {
13199: push(@idns,$intdom);
13200: }
13201: }
13202: }
13203: $seen{$prim_ip} = 1;
13204: }
13205: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
13206: }
13207:
13208: }
13209:
13210: sub all_loncaparevs {
13211: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
13212: }
13213:
13214: # ------------------------------------------------------- Read loncaparev table
13215: {
13216: sub load_loncaparevs {
13217: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
13218: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
13219: while (my $configline=<$config>) {
13220: chomp($configline);
13221: my ($hostid,$loncaparev)=split(/:/,$configline);
13222: $loncaparevs{$hostid}=$loncaparev;
13223: }
13224: close($config);
13225: }
13226: }
13227: }
13228: }
13229:
13230: # ----------------------------------------------------- Read serverhostID table
13231: {
13232: sub load_serverhomeIDs {
13233: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
13234: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
13235: while (my $configline=<$config>) {
13236: chomp($configline);
13237: my ($name,$id)=split(/:/,$configline);
13238: $serverhomeIDs{$name}=$id;
13239: }
13240: close($config);
13241: }
13242: }
13243: }
13244: }
13245:
13246:
13247: BEGIN {
13248:
13249: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
13250: unless ($readit) {
13251: {
13252: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
13253: %perlvar = (%perlvar,%{$configvars});
13254: }
13255:
13256:
13257: # ------------------------------------------------------ Read spare server file
13258: {
13259: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
13260:
13261: while (my $configline=<$config>) {
13262: chomp($configline);
13263: if ($configline) {
13264: my ($host,$type) = split(':',$configline,2);
13265: if (!defined($type) || $type eq '') { $type = 'default' };
13266: push(@{ $spareid{$type} }, $host);
13267: }
13268: }
13269: close($config);
13270: }
13271: # ------------------------------------------------------------ Read permissions
13272: {
13273: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
13274:
13275: while (my $configline=<$config>) {
13276: chomp($configline);
13277: if ($configline) {
13278: my ($role,$perm)=split(/ /,$configline);
13279: if ($perm ne '') { $pr{$role}=$perm; }
13280: }
13281: }
13282: close($config);
13283: }
13284:
13285: # -------------------------------------------- Read plain texts for permissions
13286: {
13287: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
13288:
13289: while (my $configline=<$config>) {
13290: chomp($configline);
13291: if ($configline) {
13292: my ($short,@plain)=split(/:/,$configline);
13293: %{$prp{$short}} = ();
13294: if (@plain > 0) {
13295: $prp{$short}{'std'} = $plain[0];
13296: for (my $i=1; $i<@plain; $i++) {
13297: $prp{$short}{'alt'.$i} = $plain[$i];
13298: }
13299: }
13300: }
13301: }
13302: close($config);
13303: }
13304:
13305: # ---------------------------------------------------------- Read package table
13306: {
13307: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
13308:
13309: while (my $configline=<$config>) {
13310: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
13311: chomp($configline);
13312: my ($short,$plain)=split(/:/,$configline);
13313: my ($pack,$name)=split(/\&/,$short);
13314: if ($plain ne '') {
13315: $packagetab{$pack.'&'.$name.'&name'}=$name;
13316: $packagetab{$short}=$plain;
13317: }
13318: }
13319: close($config);
13320: }
13321:
13322: # --------------------------------------------------------- Read loncaparev table
13323:
13324: &load_loncaparevs();
13325:
13326: # ------------------------------------------------------- Read serverhostID table
13327:
13328: &load_serverhomeIDs();
13329:
13330: # ---------------------------------------------------------- Read releaseslist XML
13331: {
13332: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
13333: if (-e $file) {
13334: my $parser = HTML::LCParser->new($file);
13335: while (my $token = $parser->get_token()) {
13336: if ($token->[0] eq 'S') {
13337: my $item = $token->[1];
13338: my $name = $token->[2]{'name'};
13339: my $value = $token->[2]{'value'};
13340: if ($item ne '' && $name ne '' && $value ne '') {
13341: my $release = $parser->get_text();
13342: $release =~ s/(^\s*|\s*$ )//gx;
13343: $needsrelease{$item.':'.$name.':'.$value} = $release;
13344: }
13345: }
13346: }
13347: }
13348: }
13349:
13350: # ---------------------------------------------------------- Read managers table
13351: {
13352: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
13353: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
13354: while (my $configline=<$config>) {
13355: chomp($configline);
13356: next if ($configline =~ /^\#/);
13357: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
13358: $managerstab{$configline} = 1;
13359: }
13360: }
13361: close($config);
13362: }
13363: }
13364: }
13365:
13366: # ------------- set up temporary directory
13367: {
13368: $tmpdir = LONCAPA::tempdir();
13369:
13370: }
13371:
13372: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
13373: 'compress_threshold'=> 20_000,
13374: });
13375:
13376: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
13377: $dumpcount=0;
13378: $locknum=0;
13379:
13380: &logtouch();
13381: &logthis('<font color="yellow">INFO: Read configuration</font>');
13382: $readit=1;
13383: {
13384: use integer;
13385: my $test=(2**32)+1;
13386: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
13387: &logthis(" Detected 64bit platform ($_64bit)");
13388: }
13389: }
13390: }
13391:
13392: 1;
13393: __END__
13394:
13395: =pod
13396:
13397: =head1 NAME
13398:
13399: Apache::lonnet - Subroutines to ask questions about things in the network.
13400:
13401: =head1 SYNOPSIS
13402:
13403: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
13404:
13405: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
13406:
13407: Common parameters:
13408:
13409: =over 4
13410:
13411: =item *
13412:
13413: $uname : an internal username (if $cname expecting a course Id specifically)
13414:
13415: =item *
13416:
13417: $udom : a domain (if $cdom expecting a course's domain specifically)
13418:
13419: =item *
13420:
13421: $symb : a resource instance identifier
13422:
13423: =item *
13424:
13425: $namespace : the name of a .db file that contains the data needed or
13426: being set.
13427:
13428: =back
13429:
13430: =head1 OVERVIEW
13431:
13432: lonnet provides subroutines which interact with the
13433: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
13434: about classes, users, and resources.
13435:
13436: For many of these objects you can also use this to store data about
13437: them or modify them in various ways.
13438:
13439: =head2 Symbs
13440:
13441: To identify a specific instance of a resource, LON-CAPA uses symbols
13442: or "symbs"X<symb>. These identifiers are built from the URL of the
13443: map, the resource number of the resource in the map, and the URL of
13444: the resource itself. The latter is somewhat redundant, but might help
13445: if maps change.
13446:
13447: An example is
13448:
13449: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
13450:
13451: The respective map entry is
13452:
13453: <resource id="19" src="/res/msu/korte/tests/part12.problem"
13454: title="Problem 2">
13455: </resource>
13456:
13457: Symbs are used by the random number generator, as well as to store and
13458: restore data specific to a certain instance of for example a problem.
13459:
13460: =head2 Storing And Retrieving Data
13461:
13462: X<store()>X<cstore()>X<restore()>Three of the most important functions
13463: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
13464: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
13465: is is the non-critical message twin of cstore. These functions are for
13466: handlers to store a perl hash to a user's permanent data space in an
13467: easy manner, and to retrieve it again on another call. It is expected
13468: that a handler would use this once at the beginning to retrieve data,
13469: and then again once at the end to send only the new data back.
13470:
13471: The data is stored in the user's data directory on the user's
13472: homeserver under the ID of the course.
13473:
13474: The hash that is returned by restore will have all of the previous
13475: value for all of the elements of the hash.
13476:
13477: Example:
13478:
13479: #creating a hash
13480: my %hash;
13481: $hash{'foo'}='bar';
13482:
13483: #storing it
13484: &Apache::lonnet::cstore(\%hash);
13485:
13486: #changing a value
13487: $hash{'foo'}='notbar';
13488:
13489: #adding a new value
13490: $hash{'bar'}='foo';
13491: &Apache::lonnet::cstore(\%hash);
13492:
13493: #retrieving the hash
13494: my %history=&Apache::lonnet::restore();
13495:
13496: #print the hash
13497: foreach my $key (sort(keys(%history))) {
13498: print("\%history{$key} = $history{$key}");
13499: }
13500:
13501: Will print out:
13502:
13503: %history{1:foo} = bar
13504: %history{1:keys} = foo:timestamp
13505: %history{1:timestamp} = 990455579
13506: %history{2:bar} = foo
13507: %history{2:foo} = notbar
13508: %history{2:keys} = foo:bar:timestamp
13509: %history{2:timestamp} = 990455580
13510: %history{bar} = foo
13511: %history{foo} = notbar
13512: %history{timestamp} = 990455580
13513: %history{version} = 2
13514:
13515: Note that the special hash entries C<keys>, C<version> and
13516: C<timestamp> were added to the hash. C<version> will be equal to the
13517: total number of versions of the data that have been stored. The
13518: C<timestamp> attribute will be the UNIX time the hash was
13519: stored. C<keys> is available in every historical section to list which
13520: keys were added or changed at a specific historical revision of a
13521: hash.
13522:
13523: B<Warning>: do not store the hash that restore returns directly. This
13524: will cause a mess since it will restore the historical keys as if the
13525: were new keys. I.E. 1:foo will become 1:1:foo etc.
13526:
13527: Calling convention:
13528:
13529: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
13530: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
13531:
13532: For more detailed information, see lonnet specific documentation.
13533:
13534: =head1 RETURN MESSAGES
13535:
13536: =over 4
13537:
13538: =item * B<con_lost>: unable to contact remote host
13539:
13540: =item * B<con_delayed>: unable to contact remote host, message will be delivered
13541: when the connection is brought back up
13542:
13543: =item * B<con_failed>: unable to contact remote host and unable to save message
13544: for later delivery
13545:
13546: =item * B<error:>: an error a occurred, a description of the error follows the :
13547:
13548: =item * B<no_such_host>: unable to fund a host associated with the user/domain
13549: that was requested
13550:
13551: =back
13552:
13553: =head1 PUBLIC SUBROUTINES
13554:
13555: =head2 Session Environment Functions
13556:
13557: =over 4
13558:
13559: =item *
13560: X<appenv()>
13561: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
13562: the user envirnoment file, and will be restored for each access this
13563: user makes during this session, also modifies the %env for the current
13564: process. Optional rolesarrayref - if defined contains a reference to an array
13565: of roles which are exempt from the restriction on modifying user.role entries
13566: in the user's environment.db and in %env.
13567:
13568: =item *
13569: X<delenv()>
13570: B<delenv($delthis,$regexp)>: removes all items from the session
13571: environment file that begin with $delthis. If the
13572: optional second arg - $regexp - is true, $delthis is treated as a
13573: regular expression, otherwise \Q$delthis\E is used.
13574: The values are also deleted from the current processes %env.
13575:
13576: =item * get_env_multiple($name)
13577:
13578: gets $name from the %env hash, it seemlessly handles the cases where multiple
13579: values may be defined and end up as an array ref.
13580:
13581: returns an array of values
13582:
13583: =back
13584:
13585: =head2 User Information
13586:
13587: =over 4
13588:
13589: =item *
13590: X<queryauthenticate()>
13591: B<queryauthenticate($uname,$udom)>: try to determine user's current
13592: authentication scheme
13593:
13594: =item *
13595: X<authenticate()>
13596: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
13597: authenticate user from domain's lib servers (first use the current
13598: one). C<$upass> should be the users password.
13599: $checkdefauth is optional (value is 1 if a check should be made to
13600: authenticate user using default authentication method, and allow
13601: account creation if username does not have account in the domain).
13602: $clientcancheckhost is optional (value is 1 if checking whether the
13603: server can host will occur on the client side in lonauth.pm).
13604:
13605: =item *
13606: X<homeserver()>
13607: B<homeserver($uname,$udom)>: find the server which has
13608: the user's directory and files (there must be only one), this caches
13609: the answer, and also caches if there is a borken connection.
13610:
13611: =item *
13612: X<idget()>
13613: B<idget($udom,@ids)>: find the usernames behind a list of IDs
13614: (IDs are a unique resource in a domain, there must be only 1 ID per
13615: username, and only 1 username per ID in a specific domain) (returns
13616: hash: id=>name,id=>name)
13617:
13618: =item *
13619: X<idrget()>
13620: B<idrget($udom,@unames)>: find the IDs behind a list of
13621: usernames (returns hash: name=>id,name=>id)
13622:
13623: =item *
13624: X<idput()>
13625: B<idput($udom,%ids)>: store away a list of names and associated IDs
13626:
13627: =item *
13628: X<rolesinit()>
13629: B<rolesinit($udom,$username)>: get user privileges.
13630: returns user role, first access and timer interval hashes
13631:
13632: =item *
13633: X<privileged()>
13634: B<privileged($username,$domain)>: returns a true if user has a
13635: privileged and active role (i.e. su or dc), false otherwise.
13636:
13637: =item *
13638: X<getsection()>
13639: B<getsection($udom,$uname,$cname)>: finds the section of student in the
13640: course $cname, return section name/number or '' for "not in course"
13641: and '-1' for "no section"
13642:
13643: =item *
13644: X<userenvironment()>
13645: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
13646: passed in @what from the requested user's environment, returns a hash
13647:
13648: =item *
13649: X<userlog_query()>
13650: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
13651: activity.log file. %filters defines filters applied when parsing the
13652: log file. These can be start or end timestamps, or the type of action
13653: - log to look for Login or Logout events, check for Checkin or
13654: Checkout, role for role selection. The response is in the form
13655: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
13656: escaped strings of the action recorded in the activity.log file.
13657:
13658: =back
13659:
13660: =head2 User Roles
13661:
13662: =over 4
13663:
13664: =item *
13665:
13666: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
13667: returns codes for allowed actions.
13668:
13669: The first argument is required, all others are optional.
13670:
13671: $priv is the privilege being checked.
13672: $uri contains additional information about what is being checked for access (e.g.,
13673: URL, course ID etc.).
13674: $symb is the unique resource instance identifier in a course; if needed,
13675: but not provided, it will be retrieved via a call to &symbread().
13676: $role is the role for which a priv is being checked (only used if priv is evb).
13677: $clientip is the user's IP address (only used when checking for access to portfolio
13678: files).
13679: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
13680: prevents recursive calls to &allowed.
13681:
13682: F: full access
13683: U,I,K: authentication modes (cxx only)
13684: '': forbidden
13685: 1: user needs to choose course
13686: 2: browse allowed
13687: A: passphrase authentication needed
13688: B: access temporarily blocked because of a blocking event in a course.
13689:
13690: =item *
13691:
13692: constructaccess($url,$setpriv) : check for access to construction space URL
13693:
13694: See if the owner domain and name in the URL match those in the
13695: expected environment. If so, return three element list
13696: ($ownername,$ownerdomain,$ownerhome).
13697:
13698: Otherwise return the null string.
13699:
13700: If second argument 'setpriv' is true, it assigns the privileges,
13701: and returns the same three element list, unless the owner has
13702: blocked "ad hoc" Domain Coordinator access to the Author Space,
13703: in which case the null string is returned.
13704:
13705: =item *
13706:
13707: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
13708: define a custom role rolename set privileges in format of lonTabs/roles.tab
13709: for system, domain, and course level. $uname and $udom are optional (current
13710: user's username and domain will be used when either of $uname or $udom are absent.
13711:
13712: =item *
13713:
13714: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
13715: (rolesplain.tab); plain text explanation of a user role term.
13716: $type is Course (default) or Community.
13717: If $forcedefault evaluates to true, text returned will be default
13718: text for $type. Otherwise, if this is a course, the text returned
13719: will be a custom name for the role (if defined in the course's
13720: environment). If no custom name is defined the default is returned.
13721:
13722: =item *
13723:
13724: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
13725: All arguments are optional. Returns a hash of a roles, either for
13726: co-author/assistant author roles for a user's Construction Space
13727: (default), or if $context is 'userroles', roles for the user himself,
13728: In the hash, keys are set to colon-separated $uname,$udom,$role, and
13729: (optionally) if $withsec is true, a fourth colon-separated item - $section.
13730: For each key, value is set to colon-separated start and end times for
13731: the role. If no username and domain are specified, will default to
13732: current user/domain. Types, roles, and roledoms are references to arrays
13733: of role statuses (active, future or previous), roles
13734: (e.g., cc,in, st etc.) and domains of the roles which can be used
13735: to restrict the list of roles reported. If no array ref is
13736: provided for types, will default to return only active roles.
13737:
13738: =item *
13739:
13740: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
13741: user: $uname:$udom has a role in the course: $cdom_$cnum.
13742:
13743: Additional optional arguments are: $type (if role checking is to be restricted
13744: to certain user status types -- previous (expired roles), active (currently
13745: available roles) or future (roles available in the future), and
13746: $hideprivileged -- if true will not report course roles for users who
13747: have active Domain Coordinator role in course's domain or in additional
13748: domains (specified in 'Domains to check for privileged users' in course
13749: environment -- set via: Course Settings -> Classlists and staff listing).
13750:
13751: =item *
13752:
13753: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
13754: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
13755: $possdomains and $possroles are optional array refs -- to domains to check and
13756: roles to check. If $possdomains is not specified, a dump will be done of the
13757: users' roles.db to check for a dc or su role in any domain. This can be
13758: time consuming if &privileged is called repeatedly (e.g., when displaying a
13759: classlist), so in such cases, supplying a $possdomains array is preferred, as
13760: this then allows &privileged_by_domain() to be used, which caches the identity
13761: of privileged users, eliminating the need for repeated calls to &dump().
13762:
13763: =item *
13764:
13765: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
13766: where the outer hash keys are domains specified in the $possdomains array ref,
13767: next inner hash keys are privileged roles specified in the $roles array ref,
13768: and the innermost hash contains key = value pairs for username:domain = end:start
13769: for active or future "privileged" users with that role in that domain. To avoid
13770: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
13771: innerhash are cached using priv_$role and $dom as the identifiers.
13772:
13773: =back
13774:
13775: =head2 User Modification
13776:
13777: =over 4
13778:
13779: =item *
13780:
13781: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
13782: user for the level given by URL. Optional start and end dates (leave empty
13783: string or zero for "no date")
13784:
13785: =item *
13786:
13787: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
13788: change a users, password, possible return values are: ok,
13789: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
13790: refused
13791:
13792: =item *
13793:
13794: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
13795:
13796: =item *
13797:
13798: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
13799: $forceid,$desiredhome,$email,$inststatus,$candelete) :
13800:
13801: will update user information (firstname,middlename,lastname,generation,
13802: permanentemail), and if forceid is true, student/employee ID also.
13803: A user's institutional affiliation(s) can also be updated.
13804: User information fields will not be overwritten with empty entries
13805: unless the field is included in the $candelete array reference.
13806: This array is included when a single user is modified via "Manage Users",
13807: or when Autoupdate.pl is run by cron in a domain.
13808:
13809: =item *
13810:
13811: modifystudent
13812:
13813: modify a student's enrollment and identification information.
13814: The course id is resolved based on the current user's environment.
13815: This means the invoking user must be a course coordinator or otherwise
13816: associated with a course.
13817:
13818: This call is essentially a wrapper for lonnet::modifyuser and
13819: lonnet::modify_student_enrollment
13820:
13821: Inputs:
13822:
13823: =over 4
13824:
13825: =item B<$udom> Student's loncapa domain
13826:
13827: =item B<$uname> Student's loncapa login name
13828:
13829: =item B<$uid> Student/Employee ID
13830:
13831: =item B<$umode> Student's authentication mode
13832:
13833: =item B<$upass> Student's password
13834:
13835: =item B<$first> Student's first name
13836:
13837: =item B<$middle> Student's middle name
13838:
13839: =item B<$last> Student's last name
13840:
13841: =item B<$gene> Student's generation
13842:
13843: =item B<$usec> Student's section in course
13844:
13845: =item B<$end> Unix time of the roles expiration
13846:
13847: =item B<$start> Unix time of the roles start date
13848:
13849: =item B<$forceid> If defined, allow $uid to be changed
13850:
13851: =item B<$desiredhome> server to use as home server for student
13852:
13853: =item B<$email> Student's permanent e-mail address
13854:
13855: =item B<$type> Type of enrollment (auto or manual)
13856:
13857: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
13858:
13859: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
13860:
13861: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
13862:
13863: =item B<$context> role change context (shown in User Management Logs display in a course)
13864:
13865: =item B<$inststatus> institutional status of user - : separated string of escaped status types
13866:
13867: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
13868:
13869: =back
13870:
13871: =item *
13872:
13873: modify_student_enrollment
13874:
13875: Change a student's enrollment status in a class. The environment variable
13876: 'role.request.course' must be defined for this function to proceed.
13877:
13878: Inputs:
13879:
13880: =over 4
13881:
13882: =item $udom, student's domain
13883:
13884: =item $uname, student's name
13885:
13886: =item $uid, student's user id
13887:
13888: =item $first, student's first name
13889:
13890: =item $middle
13891:
13892: =item $last
13893:
13894: =item $gene
13895:
13896: =item $usec
13897:
13898: =item $end
13899:
13900: =item $start
13901:
13902: =item $type
13903:
13904: =item $locktype
13905:
13906: =item $cid
13907:
13908: =item $selfenroll
13909:
13910: =item $context
13911:
13912: =item $credits, number of credits student will earn from this class
13913:
13914: =item $instsec, institutional course section code for student
13915:
13916: =back
13917:
13918:
13919: =item *
13920:
13921: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
13922: custom role; give a custom role to a user for the level given by URL. Specify
13923: name and domain of role author, and role name
13924:
13925: =item *
13926:
13927: revokerole($udom,$uname,$url,$role) : revoke a role for url
13928:
13929: =item *
13930:
13931: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
13932:
13933: =back
13934:
13935: =head2 Course Infomation
13936:
13937: =over 4
13938:
13939: =item *
13940:
13941: coursedescription($courseid,$options) : returns a hash of information about the
13942: specified course id, including all environment settings for the
13943: course, the description of the course will be in the hash under the
13944: key 'description'
13945:
13946: $options is an optional parameter that if supplied is a hash reference that controls
13947: what how this function works. It has the following key/values:
13948:
13949: =over 4
13950:
13951: =item freshen_cache
13952:
13953: If defined, and the environment cache for the course is valid, it is
13954: returned in the returned hash.
13955:
13956: =item one_time
13957:
13958: If defined, the last cache time is set to _now_
13959:
13960: =item user
13961:
13962: If defined, the supplied username is used instead of the current user.
13963:
13964:
13965: =back
13966:
13967: =item *
13968:
13969: resdata($name,$domain,$type,@which) : request for current parameter
13970: setting for a specific $type, where $type is either 'course' or 'user',
13971: @what should be a list of parameters to ask about. This routine caches
13972: answers for 10 minutes.
13973:
13974: =item *
13975:
13976: get_courseresdata($courseid, $domain) : dump the entire course resource
13977: data base, returning a hash that is keyed by the resource name and has
13978: values that are the resource value. I believe that the timestamps and
13979: versions are also returned.
13980:
13981: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
13982: supplemental content area. This routine caches the number of files for
13983: 10 minutes.
13984:
13985: =back
13986:
13987: =head2 Course Modification
13988:
13989: =over 4
13990:
13991: =item *
13992:
13993: writecoursepref($courseid,%prefs) : write preferences (environment
13994: database) for a course
13995:
13996: =item *
13997:
13998: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
13999:
14000: =item *
14001:
14002: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
14003:
14004: =item *
14005:
14006: is_course($courseid), is_course($cdom, $cnum)
14007:
14008: Accepts either a combined $courseid (in the form of domain_courseid) or the
14009: two component version $cdom, $cnum. It checks if the specified course exists.
14010:
14011: Returns:
14012: undef if the course doesn't exist, otherwise
14013: in scalar context the combined courseid.
14014: in list context the two components of the course identifier, domain and
14015: courseid.
14016:
14017: =back
14018:
14019: =head2 Resource Subroutines
14020:
14021: =over 4
14022:
14023: =item *
14024:
14025: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
14026:
14027: =item *
14028:
14029: repcopy($filename) : subscribes to the requested file, and attempts to
14030: replicate from the owning library server, Might return
14031: 'unavailable', 'not_found', 'forbidden', 'ok', or
14032: 'bad_request', also attempts to grab the metadata for the
14033: resource. Expects the local filesystem pathname
14034: (/home/httpd/html/res/....)
14035:
14036: =back
14037:
14038: =head2 Resource Information
14039:
14040: =over 4
14041:
14042: =item *
14043:
14044: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
14045: and returns the value of a variety of different possible values,
14046: $varname should be a request string, and the other parameters can be
14047: used to specify who and what one is asking about. Ordinarily, $cid
14048: does not need to be specified, as it is retrived from
14049: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
14050: within lonuserstate::loadmap() when initializing a course, before
14051: $env{'request.course.id'} has been set, so it needs to be provided
14052: in that one case.
14053:
14054: Possible values for $varname are environment.lastname (or other item
14055: from the envirnment hash), user.name (or someother aspect about the
14056: user), resource.0.maxtries (or some other part and parameter of a
14057: resource)
14058:
14059: =item *
14060:
14061: directcondval($number) : get current value of a condition; reads from a state
14062: string
14063:
14064: =item *
14065:
14066: condval($condidx) : value of condition index based on state
14067:
14068: =item *
14069:
14070: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
14071: resource's metadata, $what should be either a specific key, or either
14072: 'keys' (to get a list of possible keys) or 'packages' to get a list of
14073: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
14074:
14075: this function automatically caches all requests
14076:
14077: =item *
14078:
14079: metadata_query($query,$custom,$customshow) : make a metadata query against the
14080: network of library servers; returns file handle of where SQL and regex results
14081: will be stored for query
14082:
14083: =item *
14084:
14085: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
14086: return symbolic list entry (all arguments optional).
14087:
14088: Args: filename is the filename (including path) for the file for which a symb
14089: is required; donotrecurse, if true will prevent calls to allowed() being made
14090: to check access status if more than one resource was found in the bighash
14091: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
14092: a randompick); ignorecachednull, if true will prevent a symb of '' being
14093: returned if $env{$cache_str} is defined as ''; checkforblock if true will
14094: cause possible symbs to be checked to determine if they are subject to content
14095: blocking, if so they will not be included as possible symbs; possibles is a
14096: ref to a hash, which, as a side effect, will be populated with all possible
14097: symbs (content blocking not tested).
14098:
14099: returns the data handle
14100:
14101: =item *
14102:
14103: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
14104: and is a possible symb for the URL in $thisfn, and if is an encrypted
14105: resource that the user accessed using /enc/ returns a 1 on success, 0
14106: on failure, user must be in a course, as it assumes the existence of
14107: the course initial hash, and uses $env('request.course.id'}. The third
14108: arg is an optional reference to a scalar. If this arg is passed in the
14109: call to symbverify, it will be set to 1 if the symb has been set to be
14110: encrypted; otherwise it will be null.
14111:
14112: =item *
14113:
14114: symbclean($symb) : removes versions numbers from a symb, returns the
14115: cleaned symb
14116:
14117: =item *
14118:
14119: is_on_map($uri) : checks if the $uri is somewhere on the current
14120: course map, user must be in a course for it to work.
14121:
14122: =item *
14123:
14124: numval($salt) : return random seed value (addend for rndseed)
14125:
14126: =item *
14127:
14128: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
14129: a random seed, all arguments are optional, if they aren't sent it uses the
14130: environment to derive them. Note: if symb isn't sent and it can't get one
14131: from &symbread it will use the current time as its return value
14132:
14133: =item *
14134:
14135: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
14136: unfakeable, receipt
14137:
14138: =item *
14139:
14140: receipt() : API to ireceipt working off of env values; given out to users
14141:
14142: =item *
14143:
14144: countacc($url) : count the number of accesses to a given URL
14145:
14146: =item *
14147:
14148: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
14149:
14150: =item *
14151:
14152: checkin($token) : updates that a resource has beeen returned (a hard copy version for instance) and returns the data that $token was Checkout with ($symb, $tuname, $tudom, and $tcrsid)
14153:
14154: =item *
14155:
14156: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
14157:
14158: =item *
14159:
14160: devalidate($symb) : devalidate temporary spreadsheet calculations,
14161: forcing spreadsheet to reevaluate the resource scores next time.
14162:
14163: =item *
14164:
14165: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
14166: when viewing in course context.
14167:
14168: input: six args -- filename (decluttered), course number, course domain,
14169: url, symb (if registered) and group (if this is a
14170: group item -- e.g., bulletin board, group page etc.).
14171:
14172: output: array of five scalars --
14173: $cfile -- url for file editing if editable on current server
14174: $home -- homeserver of resource (i.e., for author if published,
14175: or course if uploaded.).
14176: $switchserver -- 1 if server switch will be needed.
14177: $forceedit -- 1 if icon/link should be to go to edit mode
14178: $forceview -- 1 if icon/link should be to go to view mode
14179:
14180: =item *
14181:
14182: is_course_upload($file,$cnum,$cdom)
14183:
14184: Used in course context to determine if current file was uploaded to
14185: the course (i.e., would be found in /userfiles/docs on the course's
14186: homeserver.
14187:
14188: input: 3 args -- filename (decluttered), course number and course domain.
14189: output: boolean -- 1 if file was uploaded.
14190:
14191: =back
14192:
14193: =head2 Storing/Retreiving Data
14194:
14195: =over 4
14196:
14197: =item *
14198:
14199: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
14200: permanently for this url; hashref needs to be given and should be a \%hashname;
14201: the remaining args aren't required and if they aren't passed or are '' they will
14202: be derived from the env (with the exception of $laststore, which is an
14203: optional arg used when a user's submission is stored in grading).
14204: $laststore is $version=$timestamp, where $version is the most recent version
14205: number retrieved for the corresponding $symb in the $namespace db file, and
14206: $timestamp is the timestamp for that transaction (UNIX time).
14207: $laststore is currently only passed when cstore() is called by
14208: structuretags::finalize_storage().
14209:
14210: =item *
14211:
14212: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
14213: but uses critical subroutine
14214:
14215: =item *
14216:
14217: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
14218: all args are optional
14219:
14220: =item *
14221:
14222: dumpstore($namespace,$udom,$uname,$regexp,$range) :
14223: dumps the complete (or key matching regexp) namespace into a hash
14224: ($udom, $uname, $regexp, $range are optional) for a namespace that is
14225: normally &store()ed into
14226:
14227: $range should be either an integer '100' (give me the first 100
14228: matching records)
14229: or be two integers sperated by a - with no spaces
14230: '30-50' (give me the 30th through the 50th matching
14231: records)
14232:
14233:
14234: =item *
14235:
14236: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
14237: replaces a &store() version of data with a replacement set of data
14238: for a particular resource in a namespace passed in the $storehash hash
14239: reference. If $tolog is true, the transaction is logged in the courselog
14240: with an action=PUTSTORE.
14241:
14242: =item *
14243:
14244: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
14245: works very similar to store/cstore, but all data is stored in a
14246: temporary location and can be reset using tmpreset, $storehash should
14247: be a hash reference, returns nothing on success
14248:
14249: =item *
14250:
14251: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
14252: similar to restore, but all data is stored in a temporary location and
14253: can be reset using tmpreset. Returns a hash of values on success,
14254: error string otherwise.
14255:
14256: =item *
14257:
14258: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
14259: deltes all keys for $symb form the temporary storage hash.
14260:
14261: =item *
14262:
14263: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14264: reference filled in from namesp ($udom and $uname are optional)
14265:
14266: =item *
14267:
14268: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
14269: namesp ($udom and $uname are optional)
14270:
14271: =item *
14272:
14273: dump($namespace,$udom,$uname,$regexp,$range) :
14274: dumps the complete (or key matching regexp) namespace into a hash
14275: ($udom, $uname, $regexp, $range are optional)
14276:
14277: $range should be either an integer '100' (give me the first 100
14278: matching records)
14279: or be two integers sperated by a - with no spaces
14280: '30-50' (give me the 30th through the 50th matching
14281: records)
14282: =item *
14283:
14284: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
14285: $store can be a scalar, an array reference, or if the amount to be
14286: incremented is > 1, a hash reference.
14287:
14288: ($udom and $uname are optional)
14289:
14290: =item *
14291:
14292: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
14293: ($udom and $uname are optional)
14294:
14295: =item *
14296:
14297: cput($namespace,$storehash,$udom,$uname) : critical put
14298: ($udom and $uname are optional)
14299:
14300: =item *
14301:
14302: newput($namespace,$storehash,$udom,$uname) :
14303:
14304: Attempts to store the items in the $storehash, but only if they don't
14305: currently exist, if this succeeds you can be certain that you have
14306: successfully created a new key value pair in the $namespace db.
14307:
14308:
14309: Args:
14310: $namespace: name of database to store values to
14311: $storehash: hashref to store to the db
14312: $udom: (optional) domain of user containing the db
14313: $uname: (optional) name of user caontaining the db
14314:
14315: Returns:
14316: 'ok' -> succeeded in storing all keys of $storehash
14317: 'key_exists: <key>' -> failed to anything out of $storehash, as at
14318: least <key> already existed in the db (other
14319: requested keys may also already exist)
14320: 'error: <msg>' -> unable to tie the DB or other error occurred
14321: 'con_lost' -> unable to contact request server
14322: 'refused' -> action was not allowed by remote machine
14323:
14324:
14325: =item *
14326:
14327: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14328: reference filled in from namesp (encrypts the return communication)
14329: ($udom and $uname are optional)
14330:
14331: =item *
14332:
14333: log($udom,$name,$home,$message) : write to permanent log for user; use
14334: critical subroutine
14335:
14336: =item *
14337:
14338: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
14339: array reference filled in from namespace found in domain level on either
14340: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
14341:
14342: =item *
14343:
14344: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
14345: domain level either on specified domain server ($uhome) or primary domain
14346: server ($udom and $uhome are optional)
14347:
14348: =item *
14349:
14350: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
14351: for: authentication, language, quotas, timezone, date locale, and portal URL in
14352: the target domain.
14353:
14354: May also include additional key => value pairs for the following groups:
14355:
14356: =over
14357:
14358: =item
14359: disk quotas (MB allocated by default to portfolios and authoring spaces).
14360:
14361: =over
14362:
14363: =item defaultquota, authorquota
14364:
14365: =back
14366:
14367: =item
14368: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
14369: portfolio for users).
14370:
14371: =over
14372:
14373: =item
14374: aboutme, blog, webdav, portfolio
14375:
14376: =back
14377:
14378: =item
14379: requestcourses: ability to request courses, and how requests are processed.
14380:
14381: =over
14382:
14383: =item
14384: official, unofficial, community, textbook
14385:
14386: =back
14387:
14388: =item
14389: inststatus: types of institutional affiliation, and order in which they are displayed.
14390:
14391: =over
14392:
14393: =item
14394: inststatustypes, inststatusorder, inststatusguest
14395:
14396: =back
14397:
14398: =item
14399: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
14400: for course's uploaded content.
14401:
14402: =over
14403:
14404: =item
14405: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
14406: communityquota, textbookquota
14407:
14408: =back
14409:
14410: =item
14411: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
14412: on your servers.
14413:
14414: =over
14415:
14416: =item
14417: remotesessions, hostedsessions
14418:
14419: =back
14420:
14421: =back
14422:
14423: In cases where a domain coordinator has never used the "Set Domain Configuration"
14424: utility to create a configuration.db file on a domain's primary library server
14425: only the following domain defaults: auth_def, auth_arg_def, lang_def
14426: -- corresponding values are authentication type (internal, krb4, krb5,
14427: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
14428: will be available. Values are retrieved from cache (if current), unless the
14429: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
14430: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
14431:
14432: Typical usage:
14433:
14434: %domdefaults = &get_domain_defaults($target_domain);
14435:
14436: =back
14437:
14438: =head2 Network Status Functions
14439:
14440: =over 4
14441:
14442: =item *
14443:
14444: dirlist() : return directory list based on URI (first arg).
14445:
14446: Inputs: 1 required, 5 optional.
14447:
14448: =over
14449:
14450: =item
14451: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
14452:
14453: =item
14454: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
14455:
14456: =item
14457: $username - username of user/course to be listed. Extracted from $uri if absent.
14458:
14459: =item
14460: $getpropath - boolean: 1 if prepend path using &propath().
14461:
14462: =item
14463: $getuserdir - boolean: 1 if prepend path for "userfiles".
14464:
14465: =item
14466: $alternateRoot - path to prepend in place of path from $uri.
14467:
14468: =back
14469:
14470: Returns: Array of up to two items.
14471:
14472: =over
14473:
14474: a reference to an array of files/subdirectories
14475:
14476: =over
14477:
14478: Each element in the array of files/subdirectories is a & separated list of
14479: item name and the result of running stat on the item. If dirlist was requested
14480: for a file instead of a directory, the item name will be ''. For a directory
14481: listing, if the item is a metadata file, the element will end &N&M
14482: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
14483: default copyright set (1).
14484:
14485: =back
14486:
14487: a scalar containing error condition (if encountered).
14488:
14489: =over
14490:
14491: =item
14492: no_host (no homeserver identified for $username:$domain).
14493:
14494: =item
14495: no_such_host (server contacted for listing not identified as valid host).
14496:
14497: =item
14498: con_lost (connection to remote server failed).
14499:
14500: =item
14501: refused (invalid $username:$domain received on lond side).
14502:
14503: =item
14504: no_such_dir (directory at specified path on lond side does not exist).
14505:
14506: =item
14507: empty (directory at specified path on lond side is empty).
14508:
14509: =over
14510:
14511: This is currently not encountered because the &ls3, &ls2,
14512: &ls (_handler) routines on the lond side do not filter out
14513: . and .. from a directory listing.
14514:
14515: =back
14516:
14517: =back
14518:
14519: =back
14520:
14521: =item *
14522:
14523: spareserver() : find server with least workload from spare.tab
14524:
14525:
14526: =item *
14527:
14528: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
14529: if there is no corresponding loncapa host.
14530:
14531: =back
14532:
14533:
14534: =head2 Apache Request
14535:
14536: =over 4
14537:
14538: =item *
14539:
14540: ssi($url,%hash) : server side include, does a complete request cycle on url to
14541: localhost, posts hash
14542:
14543: =back
14544:
14545: =head2 Data to String to Data
14546:
14547: =over 4
14548:
14549: =item *
14550:
14551: hash2str(%hash) : convert a hash into a string complete with escaping and '='
14552: and '&' separators, supports elements that are arrayrefs and hashrefs
14553:
14554: =item *
14555:
14556: hashref2str($hashref) : convert a hashref into a string complete with
14557: escaping and '=' and '&' separators, supports elements that are
14558: arrayrefs and hashrefs
14559:
14560: =item *
14561:
14562: arrayref2str($arrayref) : convert an arrayref into a string complete
14563: with escaping and '&' separators, supports elements that are arrayrefs
14564: and hashrefs
14565:
14566: =item *
14567:
14568: str2hash($string) : convert string to hash using unescaping and
14569: splitting on '=' and '&', supports elements that are arrayrefs and
14570: hashrefs
14571:
14572: =item *
14573:
14574: str2array($string) : convert string to hash using unescaping and
14575: splitting on '&', supports elements that are arrayrefs and hashrefs
14576:
14577: =back
14578:
14579: =head2 Logging Routines
14580:
14581:
14582: These routines allow one to make log messages in the lonnet.log and
14583: lonnet.perm logfiles.
14584:
14585: =over 4
14586:
14587: =item *
14588:
14589: logtouch() : make sure the logfile, lonnet.log, exists
14590:
14591: =item *
14592:
14593: logthis() : append message to the normal lonnet.log file, it gets
14594: preiodically rolled over and deleted.
14595:
14596: =item *
14597:
14598: logperm() : append a permanent message to lonnet.perm.log, this log
14599: file never gets deleted by any automated portion of the system, only
14600: messages of critical importance should go in here.
14601:
14602:
14603: =back
14604:
14605: =head2 General File Helper Routines
14606:
14607: =over 4
14608:
14609: =item *
14610:
14611: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
14612: (a) files in /uploaded
14613: (i) If a local copy of the file exists -
14614: compares modification date of local copy with last-modified date for
14615: definitive version stored on home server for course. If local copy is
14616: stale, requests a new version from the home server and stores it.
14617: If the original has been removed from the home server, then local copy
14618: is unlinked.
14619: (ii) If local copy does not exist -
14620: requests the file from the home server and stores it.
14621:
14622: If $caller is 'uploadrep':
14623: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
14624: for request for files originally uploaded via DOCS.
14625: - returns 'ok' if fresh local copy now available, -1 otherwise.
14626:
14627: Otherwise:
14628: This indicates a call from the content generation phase of the request.
14629: - returns the entire contents of the file or -1.
14630:
14631: (b) files in /res
14632: - returns the entire contents of a file or -1;
14633: it properly subscribes to and replicates the file if neccessary.
14634:
14635:
14636: =item *
14637:
14638: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
14639: reference
14640:
14641: returns either a stat() list of data about the file or an empty list
14642: if the file doesn't exist or couldn't find out about it (connection
14643: problems or user unknown)
14644:
14645: =item *
14646:
14647: filelocation($dir,$file) : returns file system location of a file
14648: based on URI; meant to be "fairly clean" absolute reference, $dir is a
14649: directory that relative $file lookups are to looked in ($dir of /a/dir
14650: and a file of ../bob will become /a/bob)
14651:
14652: =item *
14653:
14654: hreflocation($dir,$file) : returns file system location or a URL; same as
14655: filelocation except for hrefs
14656:
14657: =item *
14658:
14659: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
14660: also removes beginning /home/httpd/html unless /priv/ follows it.
14661:
14662: =back
14663:
14664: =head2 Usererfile file routines (/uploaded*)
14665:
14666: =over 4
14667:
14668: =item *
14669:
14670: userfileupload(): main rotine for putting a file in a user or course's
14671: filespace, arguments are,
14672:
14673: formname - required - this is the name of the element in $env where the
14674: filename, and the contents of the file to create/modifed exist
14675: the filename is in $env{'form.'.$formname.'.filename'} and the
14676: contents of the file is located in $env{'form.'.$formname}
14677: context - if coursedoc, store the file in the course of the active role
14678: of the current user;
14679: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
14680: if 'canceloverwrite': delete file in tmp/overwrites directory
14681: subdir - required - subdirectory to put the file in under ../userfiles/
14682: if undefined, it will be placed in "unknown"
14683:
14684: (This routine calls clean_filename() to remove any dangerous
14685: characters from the filename, and then calls finuserfileupload() to
14686: complete the transaction)
14687:
14688: returns either the url of the uploaded file (/uploaded/....) if successful
14689: and /adm/notfound.html if unsuccessful
14690:
14691: =item *
14692:
14693: clean_filename(): routine for cleaing a filename up for storage in
14694: userfile space, argument is:
14695:
14696: filename - proposed filename
14697:
14698: returns: the new clean filename
14699:
14700: =item *
14701:
14702: finishuserfileupload(): routine that creates and sends the file to
14703: userspace, probably shouldn't be called directly
14704:
14705: docuname: username or courseid of destination for the file
14706: docudom: domain of user/course of destination for the file
14707: formname: same as for userfileupload()
14708: fname: filename (including subdirectories) for the file
14709: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
14710: allfiles: reference to hash used to store objects found by parser
14711: codebase: reference to hash used for codebases of java objects found by parser
14712: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
14713: thumbheight: height (pixels) of thumbnail to be created for uploaded image
14714: resizewidth: width to be used to resize image using resizeImage from ImageMagick
14715: resizeheight: height to be used to resize image using resizeImage from ImageMagick
14716: context: if 'overwrite', will move the uploaded file from its temporary location to
14717: userfiles to facilitate overwriting a previously uploaded file with same name.
14718: mimetype: reference to scalar to accommodate mime type determined
14719: from File::MMagic if $parser = parse.
14720:
14721: returns either the url of the uploaded file (/uploaded/....) if successful
14722: and /adm/notfound.html if unsuccessful (or an error message if context
14723: was 'overwrite').
14724:
14725:
14726: =item *
14727:
14728: renameuserfile(): renames an existing userfile to a new name
14729:
14730: Args:
14731: docuname: username or courseid of destination for the file
14732: docudom: domain of user/course of destination for the file
14733: old: current file name (including any subdirs under userfiles)
14734: new: desired file name (including any subdirs under userfiles)
14735:
14736: =item *
14737:
14738: mkdiruserfile(): creates a directory is a userfiles dir
14739:
14740: Args:
14741: docuname: username or courseid of destination for the file
14742: docudom: domain of user/course of destination for the file
14743: dir: dir to create (including any subdirs under userfiles)
14744:
14745: =item *
14746:
14747: removeuserfile(): removes a file that exists in userfiles
14748:
14749: Args:
14750: docuname: username or courseid of destination for the file
14751: docudom: domain of user/course of destination for the file
14752: fname: filname to delete (including any subdirs under userfiles)
14753:
14754: =item *
14755:
14756: removeuploadedurl(): convience function for removeuserfile()
14757:
14758: Args:
14759: url: a full /uploaded/... url to delete
14760:
14761: =item *
14762:
14763: get_portfile_permissions():
14764: Args:
14765: domain: domain of user or course contain the portfolio files
14766: user: name of user or num of course contain the portfolio files
14767: Returns:
14768: hashref of a dump of the proper file_permissions.db
14769:
14770:
14771: =item *
14772:
14773: get_access_controls():
14774:
14775: Args:
14776: current_permissions: the hash ref returned from get_portfile_permissions()
14777: group: (optional) the group you want the files associated with
14778: file: (optional) the file you want access info on
14779:
14780: Returns:
14781: a hash (keys are file names) of hashes containing
14782: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
14783: values are XML containing access control settings (see below)
14784:
14785: Internal notes:
14786:
14787: access controls are stored in file_permissions.db as key=value pairs.
14788: key -> path to file/file_name\0uniqueID:scope_end_start
14789: where scope -> public,guest,course,group,domains or users.
14790: end -> UNIX time for end of access (0 -> no end date)
14791: start -> UNIX time for start of access
14792:
14793: value -> XML description of access control
14794: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
14795: <start></start>
14796: <end></end>
14797:
14798: <password></password> for scope type = guest
14799:
14800: <domain></domain> for scope type = course or group
14801: <number></number>
14802: <roles id="">
14803: <role></role>
14804: <access></access>
14805: <section></section>
14806: <group></group>
14807: </roles>
14808:
14809: <dom></dom> for scope type = domains
14810:
14811: <users> for scope type = users
14812: <user>
14813: <uname></uname>
14814: <udom></udom>
14815: </user>
14816: </users>
14817: </scope>
14818:
14819: Access data is also aggregated for each file in an additional key=value pair:
14820: key -> path to file/file_name\0accesscontrol
14821: value -> reference to hash
14822: hash contains key = value pairs
14823: where key = uniqueID:scope_end_start
14824: value = UNIX time record was last updated
14825:
14826: Used to improve speed of look-ups of access controls for each file.
14827:
14828: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
14829:
14830: =item *
14831:
14832: modify_access_controls():
14833:
14834: Modifies access controls for a portfolio file
14835: Args
14836: 1. file name
14837: 2. reference to hash of required changes,
14838: 3. domain
14839: 4. username
14840: where domain,username are the domain of the portfolio owner
14841: (either a user or a course)
14842:
14843: Returns:
14844: 1. result of additions or updates ('ok' or 'error', with error message).
14845: 2. result of deletions ('ok' or 'error', with error message).
14846: 3. reference to hash of any new or updated access controls.
14847: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
14848: key = integer (inbound ID)
14849: value = uniqueID
14850:
14851: =item *
14852:
14853: get_timebased_id():
14854:
14855: Attempts to get a unique timestamp-based suffix for use with items added to a
14856: course via the Course Editor (e.g., folders, composite pages,
14857: group bulletin boards).
14858:
14859: Args: (first three required; six others optional)
14860:
14861: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
14862: docssequence, or name of group
14863:
14864: 2. keyid (alphanumeric): name of temporary locking key in hash,
14865: e.g., num, boardids
14866:
14867: 3. namespace: name of gdbm file used to store suffixes already assigned;
14868: file will be named nohist_namespace.db
14869:
14870: 4. cdom: domain of course; default is current course domain from %env
14871:
14872: 5. cnum: course number; default is current course number from %env
14873:
14874: 6. idtype: set to concat if an additional digit is to be appended to the
14875: unix timestamp to form the suffix, if the plain timestamp is already
14876: in use. Default is to not do this, but simply increment the unix
14877: timestamp by 1 until a unique key is obtained.
14878:
14879: 7. who: holder of locking key; defaults to user:domain for user.
14880:
14881: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
14882: retrying); default is 3.
14883:
14884: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
14885:
14886: Returns:
14887:
14888: 1. suffix obtained (numeric)
14889:
14890: 2. result of deleting locking key (ok if deleted, or lock never obtained)
14891:
14892: 3. error: contains (localized) error message if an error occurred.
14893:
14894:
14895: =back
14896:
14897: =head2 HTTP Helper Routines
14898:
14899: =over 4
14900:
14901: =item *
14902:
14903: escape() : unpack non-word characters into CGI-compatible hex codes
14904:
14905: =item *
14906:
14907: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
14908:
14909: =back
14910:
14911: =head1 PRIVATE SUBROUTINES
14912:
14913: =head2 Underlying communication routines (Shouldn't call)
14914:
14915: =over 4
14916:
14917: =item *
14918:
14919: subreply() : tries to pass a message to lonc, returns con_lost if incapable
14920:
14921: =item *
14922:
14923: reply() : uses subreply to send a message to remote machine, logs all failures
14924:
14925: =item *
14926:
14927: critical() : passes a critical message to another server; if cannot
14928: get through then place message in connection buffer directory and
14929: returns con_delayed, if incapable of saving message, returns
14930: con_failed
14931:
14932: =item *
14933:
14934: reconlonc() : tries to reconnect lonc client processes.
14935:
14936: =back
14937:
14938: =head2 Resource Access Logging
14939:
14940: =over 4
14941:
14942: =item *
14943:
14944: flushcourselogs() : flush (save) buffer logs and access logs
14945:
14946: =item *
14947:
14948: courselog($what) : save message for course in hash
14949:
14950: =item *
14951:
14952: courseacclog($what) : save message for course using &courselog(). Perform
14953: special processing for specific resource types (problems, exams, quizzes, etc).
14954:
14955: =item *
14956:
14957: goodbye() : flush course logs and log shutting down; it is called in srm.conf
14958: as a PerlChildExitHandler
14959:
14960: =back
14961:
14962: =head2 Other
14963:
14964: =over 4
14965:
14966: =item *
14967:
14968: symblist($mapname,%newhash) : update symbolic storage links
14969:
14970: =back
14971:
14972: =cut
14973:
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