1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1172.2.62 2015/04/01 23:43:55 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( 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 = 10; # 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(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(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: my $hostname = &hostname($lonid);
421: if ($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("$perlvar{'lonSockDir'}/$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 2;
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) = @_;
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: return undef if (!-e "$lonidsdir/$handle.id");
620:
621: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
622: return undef if (!$opened);
623:
624: flock($idf,LOCK_SH);
625: my %disk_env;
626: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
627: &GDBM_READER(),0640)) {
628: return undef;
629: }
630:
631: if (!defined($disk_env{'user.name'})
632: || !defined($disk_env{'user.domain'})) {
633: return undef;
634: }
635:
636: if (ref($userhashref) eq 'HASH') {
637: $userhashref->{'name'} = $disk_env{'user.name'};
638: $userhashref->{'domain'} = $disk_env{'user.domain'};
639: }
640:
641: return $handle;
642: }
643:
644: sub timed_flock {
645: my ($file,$lock_type) = @_;
646: my $failed=0;
647: eval {
648: local $SIG{__DIE__}='DEFAULT';
649: local $SIG{ALRM}=sub {
650: $failed=1;
651: die("failed lock");
652: };
653: alarm(13);
654: flock($file,$lock_type);
655: alarm(0);
656: };
657: if ($failed) {
658: return undef;
659: } else {
660: return 1;
661: }
662: }
663:
664: # ---------------------------------------------------------- Append Environment
665:
666: sub appenv {
667: my ($newenv,$roles) = @_;
668: if (ref($newenv) eq 'HASH') {
669: foreach my $key (keys(%{$newenv})) {
670: my $refused = 0;
671: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
672: $refused = 1;
673: if (ref($roles) eq 'ARRAY') {
674: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
675: if (grep(/^\Q$role\E$/,@{$roles})) {
676: $refused = 0;
677: }
678: }
679: }
680: if ($refused) {
681: &logthis("<font color=\"blue\">WARNING: ".
682: "Attempt to modify environment ".$key." to ".$newenv->{$key}
683: .'</font>');
684: delete($newenv->{$key});
685: } else {
686: $env{$key}=$newenv->{$key};
687: }
688: }
689: my $opened = open(my $env_file,'+<',$env{'user.environment'});
690: if ($opened
691: && &timed_flock($env_file,LOCK_EX)
692: &&
693: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
694: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
695: while (my ($key,$value) = each(%{$newenv})) {
696: $disk_env{$key} = $value;
697: }
698: untie(%disk_env);
699: }
700: }
701: return 'ok';
702: }
703: # ----------------------------------------------------- Delete from Environment
704:
705: sub delenv {
706: my ($delthis,$regexp,$roles) = @_;
707: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
708: my $refused = 1;
709: if (ref($roles) eq 'ARRAY') {
710: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
711: if (grep(/^\Q$role\E$/,@{$roles})) {
712: $refused = 0;
713: }
714: }
715: if ($refused) {
716: &logthis("<font color=\"blue\">WARNING: ".
717: "Attempt to delete from environment ".$delthis);
718: return 'error';
719: }
720: }
721: my $opened = open(my $env_file,'+<',$env{'user.environment'});
722: if ($opened
723: && &timed_flock($env_file,LOCK_EX)
724: &&
725: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
726: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
727: foreach my $key (keys(%disk_env)) {
728: if ($regexp) {
729: if ($key=~/^$delthis/) {
730: delete($env{$key});
731: delete($disk_env{$key});
732: }
733: } else {
734: if ($key=~/^\Q$delthis\E/) {
735: delete($env{$key});
736: delete($disk_env{$key});
737: }
738: }
739: }
740: untie(%disk_env);
741: }
742: return 'ok';
743: }
744:
745: sub get_env_multiple {
746: my ($name) = @_;
747: my @values;
748: if (defined($env{$name})) {
749: # exists is it an array
750: if (ref($env{$name})) {
751: @values=@{ $env{$name} };
752: } else {
753: $values[0]=$env{$name};
754: }
755: }
756: return(@values);
757: }
758:
759: # ------------------------------------------------------------------- Locking
760:
761: sub set_lock {
762: my ($text)=@_;
763: $locknum++;
764: my $id=$$.'-'.$locknum;
765: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
766: 'session.lock.'.$id => $text});
767: return $id;
768: }
769:
770: sub get_locks {
771: my $num=0;
772: my %texts=();
773: foreach my $lock (split(/\,/,$env{'session.locks'})) {
774: if ($lock=~/\w/) {
775: $num++;
776: $texts{$lock}=$env{'session.lock.'.$lock};
777: }
778: }
779: return ($num,%texts);
780: }
781:
782: sub remove_lock {
783: my ($id)=@_;
784: my $newlocks='';
785: foreach my $lock (split(/\,/,$env{'session.locks'})) {
786: if (($lock=~/\w/) && ($lock ne $id)) {
787: $newlocks.=','.$lock;
788: }
789: }
790: &appenv({'session.locks' => $newlocks});
791: &delenv('session.lock.'.$id);
792: }
793:
794: sub remove_all_locks {
795: my $activelocks=$env{'session.locks'};
796: foreach my $lock (split(/\,/,$env{'session.locks'})) {
797: if ($lock=~/\w/) {
798: &remove_lock($lock);
799: }
800: }
801: }
802:
803:
804: # ------------------------------------------ Find out current server userload
805: sub userload {
806: my $numusers=0;
807: {
808: opendir(LONIDS,$perlvar{'lonIDsDir'});
809: my $filename;
810: my $curtime=time;
811: while ($filename=readdir(LONIDS)) {
812: next if ($filename eq '.' || $filename eq '..');
813: next if ($filename =~ /publicuser_\d+\.id/);
814: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
815: if ($curtime-$mtime < 1800) { $numusers++; }
816: }
817: closedir(LONIDS);
818: }
819: my $userloadpercent=0;
820: my $maxuserload=$perlvar{'lonUserLoadLim'};
821: if ($maxuserload) {
822: $userloadpercent=100*$numusers/$maxuserload;
823: }
824: $userloadpercent=sprintf("%.2f",$userloadpercent);
825: return $userloadpercent;
826: }
827:
828: # ------------------------------ Find server with least workload from spare.tab
829:
830: sub spareserver {
831: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
832: my $spare_server;
833: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
834: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
835: : $userloadpercent;
836: my ($uint_dom,$remotesessions);
837: if (($udom ne '') && (&domain($udom) ne '')) {
838: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
839: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
840: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
841: $remotesessions = $udomdefaults{'remotesessions'};
842: }
843: my $spareshash = &this_host_spares($udom);
844: if (ref($spareshash) eq 'HASH') {
845: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
846: foreach my $try_server (@{ $spareshash->{'primary'} }) {
847: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
848: $try_server));
849: ($spare_server, $lowest_load) =
850: &compare_server_load($try_server, $spare_server, $lowest_load);
851: }
852: }
853:
854: my $found_server = ($spare_server ne '' && $lowest_load < 100);
855:
856: if (!$found_server) {
857: if (ref($spareshash->{'default'}) eq 'ARRAY') {
858: foreach my $try_server (@{ $spareshash->{'default'} }) {
859: next unless (&spare_can_host($udom,$uint_dom,
860: $remotesessions,$try_server));
861: ($spare_server, $lowest_load) =
862: &compare_server_load($try_server, $spare_server, $lowest_load);
863: }
864: }
865: }
866: }
867:
868: if (!$want_server_name) {
869: my $protocol = 'http';
870: if ($protocol{$spare_server} eq 'https') {
871: $protocol = $protocol{$spare_server};
872: }
873: if (defined($spare_server)) {
874: my $hostname = &hostname($spare_server);
875: if (defined($hostname)) {
876: $spare_server = $protocol.'://'.$hostname;
877: }
878: }
879: }
880: return $spare_server;
881: }
882:
883: sub compare_server_load {
884: my ($try_server, $spare_server, $lowest_load, $required) = @_;
885:
886: if ($required) {
887: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
888: my $remoterev = &get_server_loncaparev(undef,$try_server);
889: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
890: if (($major eq '' && $minor eq '') ||
891: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
892: return ($spare_server,$lowest_load);
893: }
894: }
895:
896: my $loadans = &reply('load', $try_server);
897: my $userloadans = &reply('userload',$try_server);
898:
899: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
900: return ($spare_server, $lowest_load); #didn't get a number from the server
901: }
902:
903: my $load;
904: if ($loadans =~ /\d/) {
905: if ($userloadans =~ /\d/) {
906: #both are numbers, pick the bigger one
907: $load = ($loadans > $userloadans) ? $loadans
908: : $userloadans;
909: } else {
910: $load = $loadans;
911: }
912: } else {
913: $load = $userloadans;
914: }
915:
916: if (($load =~ /\d/) && ($load < $lowest_load)) {
917: $spare_server = $try_server;
918: $lowest_load = $load;
919: }
920: return ($spare_server,$lowest_load);
921: }
922:
923: # --------------------------- ask offload servers if user already has a session
924: sub find_existing_session {
925: my ($udom,$uname) = @_;
926: my $spareshash = &this_host_spares($udom);
927: if (ref($spareshash) eq 'HASH') {
928: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
929: foreach my $try_server (@{ $spareshash->{'primary'} }) {
930: return $try_server if (&has_user_session($try_server, $udom, $uname));
931: }
932: }
933: if (ref($spareshash->{'default'}) eq 'ARRAY') {
934: foreach my $try_server (@{ $spareshash->{'default'} }) {
935: return $try_server if (&has_user_session($try_server, $udom, $uname));
936: }
937: }
938: }
939: return;
940: }
941:
942: # -------------------------------- ask if server already has a session for user
943: sub has_user_session {
944: my ($lonid,$udom,$uname) = @_;
945: my $result = &reply(join(':','userhassession',
946: map {&escape($_)} ($udom,$uname)),$lonid);
947: return 1 if ($result eq 'ok');
948:
949: return 0;
950: }
951:
952: # --------- determine least loaded server in a user's domain which allows login
953:
954: sub choose_server {
955: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
956: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
957: my %servers = &get_servers($udom);
958: my $lowest_load = 30000;
959: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
960: if ($skiploadbal) {
961: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
962: unless (defined($cached)) {
963: my $cachetime = 60*60*24;
964: my %domconfig =
965: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
966: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
967: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
968: $cachetime);
969: }
970: }
971: }
972: foreach my $lonhost (keys(%servers)) {
973: my $loginvia;
974: if ($skiploadbal) {
975: if (ref($balancers) eq 'HASH') {
976: next if (exists($balancers->{$lonhost}));
977: }
978: }
979: if ($checkloginvia) {
980: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
981: if ($loginvia) {
982: my ($server,$path) = split(/:/,$loginvia);
983: ($login_host, $lowest_load) =
984: &compare_server_load($server, $login_host, $lowest_load, $required);
985: if ($login_host eq $server) {
986: $portal_path = $path;
987: $isredirect = 1;
988: }
989: } else {
990: ($login_host, $lowest_load) =
991: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
992: if ($login_host eq $lonhost) {
993: $portal_path = '';
994: $isredirect = '';
995: }
996: }
997: } else {
998: ($login_host, $lowest_load) =
999: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1000: }
1001: }
1002: if ($login_host ne '') {
1003: $hostname = &hostname($login_host);
1004: }
1005: return ($login_host,$hostname,$portal_path,$isredirect);
1006: }
1007:
1008: # --------------------------------------------- Try to change a user's password
1009:
1010: sub changepass {
1011: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1012: $currentpass = &escape($currentpass);
1013: $newpass = &escape($newpass);
1014: my $lonhost = $perlvar{'lonHostID'};
1015: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1016: $server);
1017: if (! $answer) {
1018: &logthis("No reply on password change request to $server ".
1019: "by $uname in domain $udom.");
1020: } elsif ($answer =~ "^ok") {
1021: &logthis("$uname in $udom successfully changed their password ".
1022: "on $server.");
1023: } elsif ($answer =~ "^pwchange_failure") {
1024: &logthis("$uname in $udom was unable to change their password ".
1025: "on $server. The action was blocked by either lcpasswd ".
1026: "or pwchange");
1027: } elsif ($answer =~ "^non_authorized") {
1028: &logthis("$uname in $udom did not get their password correct when ".
1029: "attempting to change it on $server.");
1030: } elsif ($answer =~ "^auth_mode_error") {
1031: &logthis("$uname in $udom attempted to change their password despite ".
1032: "not being locally or internally authenticated on $server.");
1033: } elsif ($answer =~ "^unknown_user") {
1034: &logthis("$uname in $udom attempted to change their password ".
1035: "on $server but were unable to because $server is not ".
1036: "their home server.");
1037: } elsif ($answer =~ "^refused") {
1038: &logthis("$server refused to change $uname in $udom password because ".
1039: "it was sent an unencrypted request to change the password.");
1040: } elsif ($answer =~ "invalid_client") {
1041: &logthis("$server refused to change $uname in $udom password because ".
1042: "it was a reset by e-mail originating from an invalid server.");
1043: }
1044: return $answer;
1045: }
1046:
1047: # ----------------------- Try to determine user's current authentication scheme
1048:
1049: sub queryauthenticate {
1050: my ($uname,$udom)=@_;
1051: my $uhome=&homeserver($uname,$udom);
1052: if (!$uhome) {
1053: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1054: return 'no_host';
1055: }
1056: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1057: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1058: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1059: }
1060: return $answer;
1061: }
1062:
1063: # --------- Try to authenticate user from domain's lib servers (first this one)
1064:
1065: sub authenticate {
1066: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1067: $upass=&escape($upass);
1068: $uname= &LONCAPA::clean_username($uname);
1069: my $uhome=&homeserver($uname,$udom,1);
1070: my $newhome;
1071: if ((!$uhome) || ($uhome eq 'no_host')) {
1072: # Maybe the machine was offline and only re-appeared again recently?
1073: &reconlonc();
1074: # One more
1075: $uhome=&homeserver($uname,$udom,1);
1076: if (($uhome eq 'no_host') && $checkdefauth) {
1077: if (defined(&domain($udom,'primary'))) {
1078: $newhome=&domain($udom,'primary');
1079: }
1080: if ($newhome ne '') {
1081: $uhome = $newhome;
1082: }
1083: }
1084: if ((!$uhome) || ($uhome eq 'no_host')) {
1085: &logthis("User $uname at $udom is unknown in authenticate");
1086: return 'no_host';
1087: }
1088: }
1089: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1090: if ($answer eq 'authorized') {
1091: if ($newhome) {
1092: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1093: return 'no_account_on_host';
1094: } else {
1095: &logthis("User $uname at $udom authorized by $uhome");
1096: return $uhome;
1097: }
1098: }
1099: if ($answer eq 'non_authorized') {
1100: &logthis("User $uname at $udom rejected by $uhome");
1101: return 'no_host';
1102: }
1103: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1104: return 'no_host';
1105: }
1106:
1107: sub can_host_session {
1108: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1109: my $canhost = 1;
1110: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1111: if (ref($remotesessions) eq 'HASH') {
1112: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1113: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1114: $canhost = 0;
1115: } else {
1116: $canhost = 1;
1117: }
1118: }
1119: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1120: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1121: $canhost = 1;
1122: } else {
1123: $canhost = 0;
1124: }
1125: }
1126: if ($canhost) {
1127: if ($remotesessions->{'version'} ne '') {
1128: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1129: if ($reqmajor ne '' && $reqminor ne '') {
1130: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1131: my $major = $1;
1132: my $minor = $2;
1133: if (($major < $reqmajor ) ||
1134: (($major == $reqmajor) && ($minor < $reqminor))) {
1135: $canhost = 0;
1136: }
1137: } else {
1138: $canhost = 0;
1139: }
1140: }
1141: }
1142: }
1143: }
1144: if ($canhost) {
1145: if (ref($hostedsessions) eq 'HASH') {
1146: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1147: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1148: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1149: if (($uint_dom ne '') &&
1150: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1151: $canhost = 0;
1152: } else {
1153: $canhost = 1;
1154: }
1155: }
1156: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1157: if (($uint_dom ne '') &&
1158: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1159: $canhost = 1;
1160: } else {
1161: $canhost = 0;
1162: }
1163: }
1164: }
1165: }
1166: return $canhost;
1167: }
1168:
1169: sub spare_can_host {
1170: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1171: my $canhost=1;
1172: my $try_server_hostname = &hostname($try_server);
1173: my $serverhomeID = &get_server_homeID($try_server_hostname);
1174: my $serverhomedom = &host_domain($serverhomeID);
1175: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1176: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1177: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1178: $canhost = 0;
1179: }
1180: }
1181: if (($canhost) && ($uint_dom)) {
1182: my @intdoms;
1183: my $internet_names = &get_internet_names($try_server);
1184: if (ref($internet_names) eq 'ARRAY') {
1185: @intdoms = @{$internet_names};
1186: }
1187: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1188: my $remoterev = &get_server_loncaparev(undef,$try_server);
1189: $canhost = &can_host_session($udom,$try_server,$remoterev,
1190: $remotesessions,
1191: $defdomdefaults{'hostedsessions'});
1192: }
1193: }
1194: return $canhost;
1195: }
1196:
1197: sub this_host_spares {
1198: my ($dom) = @_;
1199: my ($dom_in_use,$lonhost_in_use,$result);
1200: my @hosts = ¤t_machine_ids();
1201: foreach my $lonhost (@hosts) {
1202: if (&host_domain($lonhost) eq $dom) {
1203: $dom_in_use = $dom;
1204: $lonhost_in_use = $lonhost;
1205: last;
1206: }
1207: }
1208: if ($dom_in_use ne '') {
1209: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1210: }
1211: if (ref($result) ne 'HASH') {
1212: $lonhost_in_use = $perlvar{'lonHostID'};
1213: $dom_in_use = &host_domain($lonhost_in_use);
1214: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1215: if (ref($result) ne 'HASH') {
1216: $result = \%spareid;
1217: }
1218: }
1219: return $result;
1220: }
1221:
1222: sub spares_for_offload {
1223: my ($dom_in_use,$lonhost_in_use) = @_;
1224: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1225: if (defined($cached)) {
1226: return $result;
1227: } else {
1228: my $cachetime = 60*60*24;
1229: my %domconfig =
1230: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1231: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1232: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1233: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1234: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1235: }
1236: }
1237: }
1238: }
1239: return;
1240: }
1241:
1242: sub get_lonbalancer_config {
1243: my ($servers) = @_;
1244: my ($currbalancer,$currtargets);
1245: if (ref($servers) eq 'HASH') {
1246: foreach my $server (keys(%{$servers})) {
1247: my %what = (
1248: spareid => 1,
1249: perlvar => 1,
1250: );
1251: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1252: if ($result eq 'ok') {
1253: if (ref($returnhash) eq 'HASH') {
1254: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1255: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1256: $currbalancer = $server;
1257: $currtargets = {};
1258: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1259: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1260: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1261: }
1262: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1263: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1264: }
1265: }
1266: last;
1267: }
1268: }
1269: }
1270: }
1271: }
1272: }
1273: return ($currbalancer,$currtargets);
1274: }
1275:
1276: sub check_loadbalancing {
1277: my ($uname,$udom) = @_;
1278: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1279: $rule_in_effect,$offloadto,$otherserver);
1280: my $lonhost = $perlvar{'lonHostID'};
1281: my @hosts = ¤t_machine_ids();
1282: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1283: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1284: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1285: my $serverhomedom = &host_domain($lonhost);
1286:
1287: my $cachetime = 60*60*24;
1288:
1289: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1290: $dom_in_use = $udom;
1291: $homeintdom = 1;
1292: } else {
1293: $dom_in_use = $serverhomedom;
1294: }
1295: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1296: unless (defined($cached)) {
1297: my %domconfig =
1298: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1299: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1300: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1301: }
1302: }
1303: if (ref($result) eq 'HASH') {
1304: ($is_balancer,$currtargets,$currrules) =
1305: &check_balancer_result($result,@hosts);
1306: if ($is_balancer) {
1307: if (ref($currrules) eq 'HASH') {
1308: if ($homeintdom) {
1309: if ($uname ne '') {
1310: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1311: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1312: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1313: $rule_in_effect = $currrules->{'_LC_author'};
1314: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1315: $rule_in_effect = $currrules->{'_LC_adv'}
1316: }
1317: }
1318: if ($rule_in_effect eq '') {
1319: my %userenv = &userenvironment($udom,$uname,'inststatus');
1320: if ($userenv{'inststatus'} ne '') {
1321: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1322: my ($othertitle,$usertypes,$types) =
1323: &Apache::loncommon::sorted_inst_types($udom);
1324: if (ref($types) eq 'ARRAY') {
1325: foreach my $type (@{$types}) {
1326: if (grep(/^\Q$type\E$/,@statuses)) {
1327: if (exists($currrules->{$type})) {
1328: $rule_in_effect = $currrules->{$type};
1329: }
1330: }
1331: }
1332: }
1333: } else {
1334: if (exists($currrules->{'default'})) {
1335: $rule_in_effect = $currrules->{'default'};
1336: }
1337: }
1338: }
1339: } else {
1340: if (exists($currrules->{'default'})) {
1341: $rule_in_effect = $currrules->{'default'};
1342: }
1343: }
1344: } else {
1345: if ($currrules->{'_LC_external'} ne '') {
1346: $rule_in_effect = $currrules->{'_LC_external'};
1347: }
1348: }
1349: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1350: $uname,$udom);
1351: }
1352: }
1353: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1354: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1355: unless (defined($cached)) {
1356: my %domconfig =
1357: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1358: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1359: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1360: }
1361: }
1362: if (ref($result) eq 'HASH') {
1363: ($is_balancer,$currtargets,$currrules) =
1364: &check_balancer_result($result,@hosts);
1365: if ($is_balancer) {
1366: if (ref($currrules) eq 'HASH') {
1367: if ($currrules->{'_LC_internetdom'} ne '') {
1368: $rule_in_effect = $currrules->{'_LC_internetdom'};
1369: }
1370: }
1371: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1372: $uname,$udom);
1373: }
1374: } else {
1375: if ($perlvar{'lonBalancer'} eq 'yes') {
1376: $is_balancer = 1;
1377: $offloadto = &this_host_spares($dom_in_use);
1378: }
1379: }
1380: } else {
1381: if ($perlvar{'lonBalancer'} eq 'yes') {
1382: $is_balancer = 1;
1383: $offloadto = &this_host_spares($dom_in_use);
1384: }
1385: }
1386: if ($is_balancer) {
1387: my $lowest_load = 30000;
1388: if (ref($offloadto) eq 'HASH') {
1389: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1390: foreach my $try_server (@{$offloadto->{'primary'}}) {
1391: ($otherserver,$lowest_load) =
1392: &compare_server_load($try_server,$otherserver,$lowest_load);
1393: }
1394: }
1395: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1396:
1397: if (!$found_server) {
1398: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1399: foreach my $try_server (@{$offloadto->{'default'}}) {
1400: ($otherserver,$lowest_load) =
1401: &compare_server_load($try_server,$otherserver,$lowest_load);
1402: }
1403: }
1404: }
1405: } elsif (ref($offloadto) eq 'ARRAY') {
1406: if (@{$offloadto} == 1) {
1407: $otherserver = $offloadto->[0];
1408: } elsif (@{$offloadto} > 1) {
1409: foreach my $try_server (@{$offloadto}) {
1410: ($otherserver,$lowest_load) =
1411: &compare_server_load($try_server,$otherserver,$lowest_load);
1412: }
1413: }
1414: }
1415: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1416: $is_balancer = 0;
1417: if ($uname ne '' && $udom ne '') {
1418: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1419:
1420: &appenv({'user.loadbalexempt' => $lonhost,
1421: 'user.loadbalcheck.time' => time});
1422: }
1423: }
1424: }
1425: }
1426: return ($is_balancer,$otherserver);
1427: }
1428:
1429: sub check_balancer_result {
1430: my ($result,@hosts) = @_;
1431: my ($is_balancer,$currtargets,$currrules);
1432: if (ref($result) eq 'HASH') {
1433: if ($result->{'lonhost'} ne '') {
1434: my $currbalancer = $result->{'lonhost'};
1435: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1436: $is_balancer = 1;
1437: $currtargets = $result->{'targets'};
1438: $currrules = $result->{'rules'};
1439: }
1440: } else {
1441: foreach my $key (keys(%{$result})) {
1442: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1443: (ref($result->{$key}) eq 'HASH')) {
1444: $is_balancer = 1;
1445: $currrules = $result->{$key}{'rules'};
1446: $currtargets = $result->{$key}{'targets'};
1447: last;
1448: }
1449: }
1450: }
1451: }
1452: return ($is_balancer,$currtargets,$currrules);
1453: }
1454:
1455: sub get_loadbalancer_targets {
1456: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1457: my $offloadto;
1458: if ($rule_in_effect eq 'none') {
1459: return [$perlvar{'lonHostID'}];
1460: } elsif ($rule_in_effect eq '') {
1461: $offloadto = $currtargets;
1462: } else {
1463: if ($rule_in_effect eq 'homeserver') {
1464: my $homeserver = &homeserver($uname,$udom);
1465: if ($homeserver ne 'no_host') {
1466: $offloadto = [$homeserver];
1467: }
1468: } elsif ($rule_in_effect eq 'externalbalancer') {
1469: my %domconfig =
1470: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1471: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1472: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1473: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1474: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1475: }
1476: }
1477: } else {
1478: my %servers = &internet_dom_servers($udom);
1479: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1480: if (&hostname($remotebalancer) ne '') {
1481: $offloadto = [$remotebalancer];
1482: }
1483: }
1484: } elsif (&hostname($rule_in_effect) ne '') {
1485: $offloadto = [$rule_in_effect];
1486: }
1487: }
1488: return $offloadto;
1489: }
1490:
1491: sub internet_dom_servers {
1492: my ($dom) = @_;
1493: my (%uniqservers,%servers);
1494: my $primaryserver = &hostname(&domain($dom,'primary'));
1495: my @machinedoms = &machine_domains($primaryserver);
1496: foreach my $mdom (@machinedoms) {
1497: my %currservers = %servers;
1498: my %server = &get_servers($mdom);
1499: %servers = (%currservers,%server);
1500: }
1501: my %by_hostname;
1502: foreach my $id (keys(%servers)) {
1503: push(@{$by_hostname{$servers{$id}}},$id);
1504: }
1505: foreach my $hostname (sort(keys(%by_hostname))) {
1506: if (@{$by_hostname{$hostname}} > 1) {
1507: my $match = 0;
1508: foreach my $id (@{$by_hostname{$hostname}}) {
1509: if (&host_domain($id) eq $dom) {
1510: $uniqservers{$id} = $hostname;
1511: $match = 1;
1512: }
1513: }
1514: unless ($match) {
1515: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1516: }
1517: } else {
1518: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1519: }
1520: }
1521: return %uniqservers;
1522: }
1523:
1524: # ---------------------- Find the homebase for a user from domain's lib servers
1525:
1526: my %homecache;
1527: sub homeserver {
1528: my ($uname,$udom,$ignoreBadCache)=@_;
1529: my $index="$uname:$udom";
1530:
1531: if (exists($homecache{$index})) { return $homecache{$index}; }
1532:
1533: my %servers = &get_servers($udom,'library');
1534: foreach my $tryserver (keys(%servers)) {
1535: next if ($ignoreBadCache ne 'true' &&
1536: exists($badServerCache{$tryserver}));
1537:
1538: my $answer=reply("home:$udom:$uname",$tryserver);
1539: if ($answer eq 'found') {
1540: delete($badServerCache{$tryserver});
1541: return $homecache{$index}=$tryserver;
1542: } elsif ($answer eq 'no_host') {
1543: $badServerCache{$tryserver}=1;
1544: }
1545: }
1546: return 'no_host';
1547: }
1548:
1549: # ------------------------------------- Find the usernames behind a list of IDs
1550:
1551: sub idget {
1552: my ($udom,@ids)=@_;
1553: my %returnhash=();
1554:
1555: my %servers = &get_servers($udom,'library');
1556: foreach my $tryserver (keys(%servers)) {
1557: my $idlist=join('&',@ids);
1558: $idlist=~tr/A-Z/a-z/;
1559: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1560: my @answer=();
1561: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1562: @answer=split(/\&/,$reply);
1563: } ;
1564: my $i;
1565: for ($i=0;$i<=$#ids;$i++) {
1566: if ($answer[$i]) {
1567: $returnhash{$ids[$i]}=$answer[$i];
1568: }
1569: }
1570: }
1571: return %returnhash;
1572: }
1573:
1574: # ------------------------------------- Find the IDs behind a list of usernames
1575:
1576: sub idrget {
1577: my ($udom,@unames)=@_;
1578: my %returnhash=();
1579: foreach my $uname (@unames) {
1580: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1581: }
1582: return %returnhash;
1583: }
1584:
1585: # ------------------------------- Store away a list of names and associated IDs
1586:
1587: sub idput {
1588: my ($udom,%ids)=@_;
1589: my %servers=();
1590: foreach my $uname (keys(%ids)) {
1591: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1592: my $uhom=&homeserver($uname,$udom);
1593: if ($uhom ne 'no_host') {
1594: my $id=&escape($ids{$uname});
1595: $id=~tr/A-Z/a-z/;
1596: my $esc_unam=&escape($uname);
1597: if ($servers{$uhom}) {
1598: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1599: } else {
1600: $servers{$uhom}=$id.'='.$esc_unam;
1601: }
1602: }
1603: }
1604: foreach my $server (keys(%servers)) {
1605: &critical('idput:'.$udom.':'.$servers{$server},$server);
1606: }
1607: }
1608:
1609: # ---------------------------------------- Delete unwanted IDs from ids.db file
1610:
1611: sub iddel {
1612: my ($udom,$idshashref,$uhome)=@_;
1613: my %result=();
1614: unless (ref($idshashref) eq 'HASH') {
1615: return %result;
1616: }
1617: my %servers=();
1618: while (my ($id,$uname) = each(%{$idshashref})) {
1619: my $uhom;
1620: if ($uhome) {
1621: $uhom = $uhome;
1622: } else {
1623: $uhom=&homeserver($uname,$udom);
1624: }
1625: if ($uhom ne 'no_host') {
1626: if ($servers{$uhom}) {
1627: $servers{$uhom}.='&'.&escape($id);
1628: } else {
1629: $servers{$uhom}=&escape($id);
1630: }
1631: }
1632: }
1633: foreach my $server (keys(%servers)) {
1634: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1635: }
1636: return %result;
1637: }
1638:
1639: # ------------------------------dump from db file owned by domainconfig user
1640: sub dump_dom {
1641: my ($namespace, $udom, $regexp) = @_;
1642:
1643: $udom ||= $env{'user.domain'};
1644:
1645: return () unless $udom;
1646:
1647: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1648: }
1649:
1650: # ------------------------------------------ get items from domain db files
1651:
1652: sub get_dom {
1653: my ($namespace,$storearr,$udom,$uhome)=@_;
1654: return if ($udom eq 'public');
1655: my $items='';
1656: foreach my $item (@$storearr) {
1657: $items.=&escape($item).'&';
1658: }
1659: $items=~s/\&$//;
1660: if (!$udom) {
1661: $udom=$env{'user.domain'};
1662: return if ($udom eq 'public');
1663: if (defined(&domain($udom,'primary'))) {
1664: $uhome=&domain($udom,'primary');
1665: } else {
1666: undef($uhome);
1667: }
1668: } else {
1669: if (!$uhome) {
1670: if (defined(&domain($udom,'primary'))) {
1671: $uhome=&domain($udom,'primary');
1672: }
1673: }
1674: }
1675: if ($udom && $uhome && ($uhome ne 'no_host')) {
1676: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1677: my %returnhash;
1678: if ($rep eq '' || $rep =~ /^error: 2 /) {
1679: return %returnhash;
1680: }
1681: my @pairs=split(/\&/,$rep);
1682: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1683: return @pairs;
1684: }
1685: my $i=0;
1686: foreach my $item (@$storearr) {
1687: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1688: $i++;
1689: }
1690: return %returnhash;
1691: } else {
1692: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1693: }
1694: }
1695:
1696: # -------------------------------------------- put items in domain db files
1697:
1698: sub put_dom {
1699: my ($namespace,$storehash,$udom,$uhome)=@_;
1700: if (!$udom) {
1701: $udom=$env{'user.domain'};
1702: if (defined(&domain($udom,'primary'))) {
1703: $uhome=&domain($udom,'primary');
1704: } else {
1705: undef($uhome);
1706: }
1707: } else {
1708: if (!$uhome) {
1709: if (defined(&domain($udom,'primary'))) {
1710: $uhome=&domain($udom,'primary');
1711: }
1712: }
1713: }
1714: if ($udom && $uhome && ($uhome ne 'no_host')) {
1715: my $items='';
1716: foreach my $item (keys(%$storehash)) {
1717: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1718: }
1719: $items=~s/\&$//;
1720: return &reply("putdom:$udom:$namespace:$items",$uhome);
1721: } else {
1722: &logthis("put_dom failed - no homeserver and/or domain");
1723: }
1724: }
1725:
1726: # --------------------- newput for items in db file owned by domainconfig user
1727: sub newput_dom {
1728: my ($namespace,$storehash,$udom) = @_;
1729: my $result;
1730: if (!$udom) {
1731: $udom=$env{'user.domain'};
1732: }
1733: if ($udom) {
1734: my $uname = &get_domainconfiguser($udom);
1735: $result = &newput($namespace,$storehash,$udom,$uname);
1736: }
1737: return $result;
1738: }
1739:
1740: # --------------------- delete for items in db file owned by domainconfig user
1741: sub del_dom {
1742: my ($namespace,$storearr,$udom)=@_;
1743: if (ref($storearr) eq 'ARRAY') {
1744: if (!$udom) {
1745: $udom=$env{'user.domain'};
1746: }
1747: if ($udom) {
1748: my $uname = &get_domainconfiguser($udom);
1749: return &del($namespace,$storearr,$udom,$uname);
1750: }
1751: }
1752: }
1753:
1754: # ----------------------------------construct domainconfig user for a domain
1755: sub get_domainconfiguser {
1756: my ($udom) = @_;
1757: return $udom.'-domainconfig';
1758: }
1759:
1760: sub retrieve_inst_usertypes {
1761: my ($udom) = @_;
1762: my (%returnhash,@order);
1763: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1764: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1765: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1766: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1767: } else {
1768: if (defined(&domain($udom,'primary'))) {
1769: my $uhome=&domain($udom,'primary');
1770: my $rep=&reply("inst_usertypes:$udom",$uhome);
1771: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1772: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1773: return (\%returnhash,\@order);
1774: }
1775: my ($hashitems,$orderitems) = split(/:/,$rep);
1776: my @pairs=split(/\&/,$hashitems);
1777: foreach my $item (@pairs) {
1778: my ($key,$value)=split(/=/,$item,2);
1779: $key = &unescape($key);
1780: next if ($key =~ /^error: 2 /);
1781: $returnhash{$key}=&thaw_unescape($value);
1782: }
1783: my @esc_order = split(/\&/,$orderitems);
1784: foreach my $item (@esc_order) {
1785: push(@order,&unescape($item));
1786: }
1787: } else {
1788: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1789: }
1790: return (\%returnhash,\@order);
1791: }
1792: }
1793:
1794: sub is_domainimage {
1795: my ($url) = @_;
1796: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1797: if (&domain($1) ne '') {
1798: return '1';
1799: }
1800: }
1801: return;
1802: }
1803:
1804: sub inst_directory_query {
1805: my ($srch) = @_;
1806: my $udom = $srch->{'srchdomain'};
1807: my %results;
1808: my $homeserver = &domain($udom,'primary');
1809: my $outcome;
1810: if ($homeserver ne '') {
1811: my $queryid=&reply("querysend:instdirsearch:".
1812: &escape($srch->{'srchby'}).':'.
1813: &escape($srch->{'srchterm'}).':'.
1814: &escape($srch->{'srchtype'}),$homeserver);
1815: my $host=&hostname($homeserver);
1816: if ($queryid !~/^\Q$host\E\_/) {
1817: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1818: return;
1819: }
1820: my $response = &get_query_reply($queryid);
1821: my $maxtries = 5;
1822: my $tries = 1;
1823: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1824: $response = &get_query_reply($queryid);
1825: $tries ++;
1826: }
1827:
1828: if (!&error($response) && $response ne 'refused') {
1829: if ($response eq 'unavailable') {
1830: $outcome = $response;
1831: } else {
1832: $outcome = 'ok';
1833: my @matches = split(/\n/,$response);
1834: foreach my $match (@matches) {
1835: my ($key,$value) = split(/=/,$match);
1836: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1837: }
1838: }
1839: }
1840: }
1841: return ($outcome,%results);
1842: }
1843:
1844: sub usersearch {
1845: my ($srch) = @_;
1846: my $dom = $srch->{'srchdomain'};
1847: my %results;
1848: my %libserv = &all_library();
1849: my $query = 'usersearch';
1850: foreach my $tryserver (keys(%libserv)) {
1851: if (&host_domain($tryserver) eq $dom) {
1852: my $host=&hostname($tryserver);
1853: my $queryid=
1854: &reply("querysend:".&escape($query).':'.
1855: &escape($srch->{'srchby'}).':'.
1856: &escape($srch->{'srchtype'}).':'.
1857: &escape($srch->{'srchterm'}),$tryserver);
1858: if ($queryid !~/^\Q$host\E\_/) {
1859: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1860: next;
1861: }
1862: my $reply = &get_query_reply($queryid);
1863: my $maxtries = 1;
1864: my $tries = 1;
1865: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1866: $reply = &get_query_reply($queryid);
1867: $tries ++;
1868: }
1869: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1870: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1871: } else {
1872: my @matches;
1873: if ($reply =~ /\n/) {
1874: @matches = split(/\n/,$reply);
1875: } else {
1876: @matches = split(/\&/,$reply);
1877: }
1878: foreach my $match (@matches) {
1879: my ($uname,$udom,%userhash);
1880: foreach my $entry (split(/:/,$match)) {
1881: my ($key,$value) =
1882: map {&unescape($_);} split(/=/,$entry);
1883: $userhash{$key} = $value;
1884: if ($key eq 'username') {
1885: $uname = $value;
1886: } elsif ($key eq 'domain') {
1887: $udom = $value;
1888: }
1889: }
1890: $results{$uname.':'.$udom} = \%userhash;
1891: }
1892: }
1893: }
1894: }
1895: return %results;
1896: }
1897:
1898: sub get_instuser {
1899: my ($udom,$uname,$id) = @_;
1900: my $homeserver = &domain($udom,'primary');
1901: my ($outcome,%results);
1902: if ($homeserver ne '') {
1903: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1904: &escape($id).':'.&escape($udom),$homeserver);
1905: my $host=&hostname($homeserver);
1906: if ($queryid !~/^\Q$host\E\_/) {
1907: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1908: return;
1909: }
1910: my $response = &get_query_reply($queryid);
1911: my $maxtries = 5;
1912: my $tries = 1;
1913: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1914: $response = &get_query_reply($queryid);
1915: $tries ++;
1916: }
1917: if (!&error($response) && $response ne 'refused') {
1918: if ($response eq 'unavailable') {
1919: $outcome = $response;
1920: } else {
1921: $outcome = 'ok';
1922: my @matches = split(/\n/,$response);
1923: foreach my $match (@matches) {
1924: my ($key,$value) = split(/=/,$match);
1925: $results{&unescape($key)} = &thaw_unescape($value);
1926: }
1927: }
1928: }
1929: }
1930: my %userinfo;
1931: if (ref($results{$uname}) eq 'HASH') {
1932: %userinfo = %{$results{$uname}};
1933: }
1934: return ($outcome,%userinfo);
1935: }
1936:
1937: sub inst_rulecheck {
1938: my ($udom,$uname,$id,$item,$rules) = @_;
1939: my %returnhash;
1940: if ($udom ne '') {
1941: if (ref($rules) eq 'ARRAY') {
1942: @{$rules} = map {&escape($_);} (@{$rules});
1943: my $rulestr = join(':',@{$rules});
1944: my $homeserver=&domain($udom,'primary');
1945: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1946: my $response;
1947: if ($item eq 'username') {
1948: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1949: ':'.&escape($uname).':'.$rulestr,
1950: $homeserver));
1951: } elsif ($item eq 'id') {
1952: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1953: ':'.&escape($id).':'.$rulestr,
1954: $homeserver));
1955: } elsif ($item eq 'selfcreate') {
1956: $response=&unescape(&reply('instselfcreatecheck:'.
1957: &escape($udom).':'.&escape($uname).
1958: ':'.$rulestr,$homeserver));
1959: }
1960: if ($response ne 'refused') {
1961: my @pairs=split(/\&/,$response);
1962: foreach my $item (@pairs) {
1963: my ($key,$value)=split(/=/,$item,2);
1964: $key = &unescape($key);
1965: next if ($key =~ /^error: 2 /);
1966: $returnhash{$key}=&thaw_unescape($value);
1967: }
1968: }
1969: }
1970: }
1971: }
1972: return %returnhash;
1973: }
1974:
1975: sub inst_userrules {
1976: my ($udom,$check) = @_;
1977: my (%ruleshash,@ruleorder);
1978: if ($udom ne '') {
1979: my $homeserver=&domain($udom,'primary');
1980: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1981: my $response;
1982: if ($check eq 'id') {
1983: $response=&reply('instidrules:'.&escape($udom),
1984: $homeserver);
1985: } elsif ($check eq 'email') {
1986: $response=&reply('instemailrules:'.&escape($udom),
1987: $homeserver);
1988: } else {
1989: $response=&reply('instuserrules:'.&escape($udom),
1990: $homeserver);
1991: }
1992: if (($response ne 'refused') && ($response ne 'error') &&
1993: ($response ne 'unknown_cmd') &&
1994: ($response ne 'no_such_host')) {
1995: my ($hashitems,$orderitems) = split(/:/,$response);
1996: my @pairs=split(/\&/,$hashitems);
1997: foreach my $item (@pairs) {
1998: my ($key,$value)=split(/=/,$item,2);
1999: $key = &unescape($key);
2000: next if ($key =~ /^error: 2 /);
2001: $ruleshash{$key}=&thaw_unescape($value);
2002: }
2003: my @esc_order = split(/\&/,$orderitems);
2004: foreach my $item (@esc_order) {
2005: push(@ruleorder,&unescape($item));
2006: }
2007: }
2008: }
2009: }
2010: return (\%ruleshash,\@ruleorder);
2011: }
2012:
2013: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2014:
2015: sub get_domain_defaults {
2016: my ($domain,$ignore_cache) = @_;
2017: return if (($domain eq '') || ($domain eq 'public'));
2018: my $cachetime = 60*60*24;
2019: unless ($ignore_cache) {
2020: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2021: if (defined($cached)) {
2022: if (ref($result) eq 'HASH') {
2023: return %{$result};
2024: }
2025: }
2026: }
2027: my %domdefaults;
2028: my %domconfig =
2029: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2030: 'requestcourses','inststatus',
2031: 'coursedefaults','usersessions',
2032: 'requestauthor','selfenrollment',
2033: 'coursecategories'],$domain);
2034: my @coursetypes = ('official','unofficial','community','textbook');
2035: if (ref($domconfig{'defaults'}) eq 'HASH') {
2036: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2037: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2038: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2039: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2040: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2041: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2042: } else {
2043: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2044: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2045: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2046: }
2047: if (ref($domconfig{'quotas'}) eq 'HASH') {
2048: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2049: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2050: } else {
2051: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2052: }
2053: my @usertools = ('aboutme','blog','webdav','portfolio');
2054: foreach my $item (@usertools) {
2055: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2056: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2057: }
2058: }
2059: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2060: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2061: }
2062: }
2063: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2064: foreach my $item ('official','unofficial','community','textbook') {
2065: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2066: }
2067: }
2068: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2069: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2070: }
2071: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2072: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2073: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2074: }
2075: }
2076: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2077: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2078: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2079: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2080: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2081: }
2082: foreach my $type (@coursetypes) {
2083: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2084: unless ($type eq 'community') {
2085: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2086: }
2087: }
2088: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2089: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2090: }
2091: if ($domdefaults{'postsubmit'} eq 'on') {
2092: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2093: $domdefaults{$type.'postsubtimeout'} =
2094: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2095: }
2096: }
2097: }
2098: }
2099: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2100: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2101: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2102: }
2103: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2104: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2105: }
2106: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2107: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2108: }
2109: }
2110: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2111: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2112: my @settings = ('types','registered','enroll_dates','access_dates','section',
2113: 'approval','limit');
2114: foreach my $type (@coursetypes) {
2115: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2116: my @mgrdc = ();
2117: foreach my $item (@settings) {
2118: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2119: push(@mgrdc,$item);
2120: }
2121: }
2122: if (@mgrdc) {
2123: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2124: }
2125: }
2126: }
2127: }
2128: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2129: foreach my $type (@coursetypes) {
2130: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2131: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2132: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2133: }
2134: }
2135: }
2136: }
2137: }
2138: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2139: $domdefaults{'catauth'} = 'std';
2140: $domdefaults{'catunauth'} = 'std';
2141: if ($domconfig{'coursecategories'}{'auth'}) {
2142: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2143: }
2144: if ($domconfig{'coursecategories'}{'unauth'}) {
2145: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2146: }
2147: }
2148: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2149: return %domdefaults;
2150: }
2151:
2152: # --------------------------------------------------- Assign a key to a student
2153:
2154: sub assign_access_key {
2155: #
2156: # a valid key looks like uname:udom#comments
2157: # comments are being appended
2158: #
2159: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2160: $kdom=
2161: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2162: $knum=
2163: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2164: $cdom=
2165: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2166: $cnum=
2167: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2168: $udom=$env{'user.name'} unless (defined($udom));
2169: $uname=$env{'user.domain'} unless (defined($uname));
2170: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2171: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2172: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2173: # assigned to this person
2174: # - this should not happen,
2175: # unless something went wrong
2176: # the first time around
2177: # ready to assign
2178: $logentry=$1.'; '.$logentry;
2179: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2180: $kdom,$knum) eq 'ok') {
2181: # key now belongs to user
2182: my $envkey='key.'.$cdom.'_'.$cnum;
2183: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2184: &appenv({'environment.'.$envkey => $ckey});
2185: return 'ok';
2186: } else {
2187: return
2188: 'error: Count not permanently assign key, will need to be re-entered later.';
2189: }
2190: } else {
2191: return 'error: Could not assign key, try again later.';
2192: }
2193: } elsif (!$existing{$ckey}) {
2194: # the key does not exist
2195: return 'error: The key does not exist';
2196: } else {
2197: # the key is somebody else's
2198: return 'error: The key is already in use';
2199: }
2200: }
2201:
2202: # ------------------------------------------ put an additional comment on a key
2203:
2204: sub comment_access_key {
2205: #
2206: # a valid key looks like uname:udom#comments
2207: # comments are being appended
2208: #
2209: my ($ckey,$cdom,$cnum,$logentry)=@_;
2210: $cdom=
2211: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2212: $cnum=
2213: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2214: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2215: if ($existing{$ckey}) {
2216: $existing{$ckey}.='; '.$logentry;
2217: # ready to assign
2218: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2219: $cdom,$cnum) eq 'ok') {
2220: return 'ok';
2221: } else {
2222: return 'error: Count not store comment.';
2223: }
2224: } else {
2225: # the key does not exist
2226: return 'error: The key does not exist';
2227: }
2228: }
2229:
2230: # ------------------------------------------------------ Generate a set of keys
2231:
2232: sub generate_access_keys {
2233: my ($number,$cdom,$cnum,$logentry)=@_;
2234: $cdom=
2235: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2236: $cnum=
2237: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2238: unless (&allowed('mky',$cdom)) { return 0; }
2239: unless (($cdom) && ($cnum)) { return 0; }
2240: if ($number>10000) { return 0; }
2241: sleep(2); # make sure don't get same seed twice
2242: srand(time()^($$+($$<<15))); # from "Programming Perl"
2243: my $total=0;
2244: for (my $i=1;$i<=$number;$i++) {
2245: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2246: sprintf("%lx",int(100000*rand)).'-'.
2247: sprintf("%lx",int(100000*rand));
2248: $newkey=~s/1/g/g; # folks mix up 1 and l
2249: $newkey=~s/0/h/g; # and also 0 and O
2250: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2251: if ($existing{$newkey}) {
2252: $i--;
2253: } else {
2254: if (&put('accesskeys',
2255: { $newkey => '# generated '.localtime().
2256: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2257: '; '.$logentry },
2258: $cdom,$cnum) eq 'ok') {
2259: $total++;
2260: }
2261: }
2262: }
2263: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2264: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2265: return $total;
2266: }
2267:
2268: # ------------------------------------------------------- Validate an accesskey
2269:
2270: sub validate_access_key {
2271: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2272: $cdom=
2273: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2274: $cnum=
2275: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2276: $udom=$env{'user.domain'} unless (defined($udom));
2277: $uname=$env{'user.name'} unless (defined($uname));
2278: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2279: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2280: }
2281:
2282: # ------------------------------------- Find the section of student in a course
2283: sub devalidate_getsection_cache {
2284: my ($udom,$unam,$courseid)=@_;
2285: my $hashid="$udom:$unam:$courseid";
2286: &devalidate_cache_new('getsection',$hashid);
2287: }
2288:
2289: sub courseid_to_courseurl {
2290: my ($courseid) = @_;
2291: #already url style courseid
2292: return $courseid if ($courseid =~ m{^/});
2293:
2294: if (exists($env{'course.'.$courseid.'.num'})) {
2295: my $cnum = $env{'course.'.$courseid.'.num'};
2296: my $cdom = $env{'course.'.$courseid.'.domain'};
2297: return "/$cdom/$cnum";
2298: }
2299:
2300: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2301: if (exists($courseinfo{'num'})) {
2302: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2303: }
2304:
2305: return undef;
2306: }
2307:
2308: sub getsection {
2309: my ($udom,$unam,$courseid)=@_;
2310: my $cachetime=1800;
2311:
2312: my $hashid="$udom:$unam:$courseid";
2313: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2314: if (defined($cached)) { return $result; }
2315:
2316: my %Pending;
2317: my %Expired;
2318: #
2319: # Each role can either have not started yet (pending), be active,
2320: # or have expired.
2321: #
2322: # If there is an active role, we are done.
2323: #
2324: # If there is more than one role which has not started yet,
2325: # choose the one which will start sooner
2326: # If there is one role which has not started yet, return it.
2327: #
2328: # If there is more than one expired role, choose the one which ended last.
2329: # If there is a role which has expired, return it.
2330: #
2331: $courseid = &courseid_to_courseurl($courseid);
2332: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2333: foreach my $key (keys(%roleshash)) {
2334: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2335: my $section=$1;
2336: if ($key eq $courseid.'_st') { $section=''; }
2337: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2338: my $now=time;
2339: if (defined($end) && $end && ($now > $end)) {
2340: $Expired{$end}=$section;
2341: next;
2342: }
2343: if (defined($start) && $start && ($now < $start)) {
2344: $Pending{$start}=$section;
2345: next;
2346: }
2347: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2348: }
2349: #
2350: # Presumedly there will be few matching roles from the above
2351: # loop and the sorting time will be negligible.
2352: if (scalar(keys(%Pending))) {
2353: my ($time) = sort {$a <=> $b} keys(%Pending);
2354: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2355: }
2356: if (scalar(keys(%Expired))) {
2357: my @sorted = sort {$a <=> $b} keys(%Expired);
2358: my $time = pop(@sorted);
2359: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2360: }
2361: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2362: }
2363:
2364: sub save_cache {
2365: &purge_remembered();
2366: #&Apache::loncommon::validate_page();
2367: undef(%env);
2368: undef($env_loaded);
2369: }
2370:
2371: my $to_remember=-1;
2372: my %remembered;
2373: my %accessed;
2374: my $kicks=0;
2375: my $hits=0;
2376: sub make_key {
2377: my ($name,$id) = @_;
2378: if (length($id) > 65
2379: && length(&escape($id)) > 200) {
2380: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2381: }
2382: return &escape($name.':'.$id);
2383: }
2384:
2385: sub devalidate_cache_new {
2386: my ($name,$id,$debug) = @_;
2387: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2388: $id=&make_key($name,$id);
2389: $memcache->delete($id);
2390: delete($remembered{$id});
2391: delete($accessed{$id});
2392: }
2393:
2394: sub is_cached_new {
2395: my ($name,$id,$debug) = @_;
2396: $id=&make_key($name,$id);
2397: if (exists($remembered{$id})) {
2398: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2399: $accessed{$id}=[&gettimeofday()];
2400: $hits++;
2401: return ($remembered{$id},1);
2402: }
2403: my $value = $memcache->get($id);
2404: if (!(defined($value))) {
2405: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2406: return (undef,undef);
2407: }
2408: if ($value eq '__undef__') {
2409: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2410: $value=undef;
2411: }
2412: &make_room($id,$value,$debug);
2413: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2414: return ($value,1);
2415: }
2416:
2417: sub do_cache_new {
2418: my ($name,$id,$value,$time,$debug) = @_;
2419: $id=&make_key($name,$id);
2420: my $setvalue=$value;
2421: if (!defined($setvalue)) {
2422: $setvalue='__undef__';
2423: }
2424: if (!defined($time) ) {
2425: $time=600;
2426: }
2427: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2428: my $result = $memcache->set($id,$setvalue,$time);
2429: if (! $result) {
2430: &logthis("caching of id -> $id failed");
2431: $memcache->disconnect_all();
2432: }
2433: # need to make a copy of $value
2434: &make_room($id,$value,$debug);
2435: return $value;
2436: }
2437:
2438: sub make_room {
2439: my ($id,$value,$debug)=@_;
2440:
2441: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2442: : $value;
2443: if ($to_remember<0) { return; }
2444: $accessed{$id}=[&gettimeofday()];
2445: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2446: my $to_kick;
2447: my $max_time=0;
2448: foreach my $other (keys(%accessed)) {
2449: if (&tv_interval($accessed{$other}) > $max_time) {
2450: $to_kick=$other;
2451: $max_time=&tv_interval($accessed{$other});
2452: }
2453: }
2454: delete($remembered{$to_kick});
2455: delete($accessed{$to_kick});
2456: $kicks++;
2457: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2458: return;
2459: }
2460:
2461: sub purge_remembered {
2462: #&logthis("Tossing ".scalar(keys(%remembered)));
2463: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2464: undef(%remembered);
2465: undef(%accessed);
2466: }
2467: # ------------------------------------- Read an entry from a user's environment
2468:
2469: sub userenvironment {
2470: my ($udom,$unam,@what)=@_;
2471: my $items;
2472: foreach my $item (@what) {
2473: $items.=&escape($item).'&';
2474: }
2475: $items=~s/\&$//;
2476: my %returnhash=();
2477: my $uhome = &homeserver($unam,$udom);
2478: unless ($uhome eq 'no_host') {
2479: my @answer=split(/\&/,
2480: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2481: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2482: return %returnhash;
2483: }
2484: my $i;
2485: for ($i=0;$i<=$#what;$i++) {
2486: $returnhash{$what[$i]}=&unescape($answer[$i]);
2487: }
2488: }
2489: return %returnhash;
2490: }
2491:
2492: # ---------------------------------------------------------- Get a studentphoto
2493: sub studentphoto {
2494: my ($udom,$unam,$ext) = @_;
2495: my $home=&Apache::lonnet::homeserver($unam,$udom);
2496: if (defined($env{'request.course.id'})) {
2497: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2498: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2499: return(&retrievestudentphoto($udom,$unam,$ext));
2500: } else {
2501: my ($result,$perm_reqd)=
2502: &Apache::lonnet::auto_photo_permission($unam,$udom);
2503: if ($result eq 'ok') {
2504: if (!($perm_reqd eq 'yes')) {
2505: return(&retrievestudentphoto($udom,$unam,$ext));
2506: }
2507: }
2508: }
2509: }
2510: } else {
2511: my ($result,$perm_reqd) =
2512: &Apache::lonnet::auto_photo_permission($unam,$udom);
2513: if ($result eq 'ok') {
2514: if (!($perm_reqd eq 'yes')) {
2515: return(&retrievestudentphoto($udom,$unam,$ext));
2516: }
2517: }
2518: }
2519: return '/adm/lonKaputt/lonlogo_broken.gif';
2520: }
2521:
2522: sub retrievestudentphoto {
2523: my ($udom,$unam,$ext,$type) = @_;
2524: my $home=&Apache::lonnet::homeserver($unam,$udom);
2525: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2526: if ($ret eq 'ok') {
2527: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2528: if ($type eq 'thumbnail') {
2529: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2530: }
2531: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2532: return $tokenurl;
2533: } else {
2534: if ($type eq 'thumbnail') {
2535: return '/adm/lonKaputt/genericstudent_tn.gif';
2536: } else {
2537: return '/adm/lonKaputt/lonlogo_broken.gif';
2538: }
2539: }
2540: }
2541:
2542: # -------------------------------------------------------------------- New chat
2543:
2544: sub chatsend {
2545: my ($newentry,$anon,$group)=@_;
2546: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2547: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2548: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2549: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2550: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2551: &escape($newentry)).':'.$group,$chome);
2552: }
2553:
2554: # ------------------------------------------ Find current version of a resource
2555:
2556: sub getversion {
2557: my $fname=&clutter(shift);
2558: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2559: return ¤tversion(&filelocation('',$fname));
2560: }
2561:
2562: sub currentversion {
2563: my $fname=shift;
2564: my $author=$fname;
2565: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2566: my ($udom,$uname)=split(/\//,$author);
2567: my $home=&homeserver($uname,$udom);
2568: if ($home eq 'no_host') {
2569: return -1;
2570: }
2571: my $answer=&reply("currentversion:$fname",$home);
2572: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2573: return -1;
2574: }
2575: return $answer;
2576: }
2577:
2578: #
2579: # Return special version number of resource if set by override, empty otherwise
2580: #
2581: sub usedversion {
2582: my $fname=shift;
2583: unless ($fname) { $fname=$env{'request.uri'}; }
2584: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2585: if ($urlversion) { return $urlversion; }
2586: return '';
2587: }
2588:
2589: # ----------------------------- Subscribe to a resource, return URL if possible
2590:
2591: sub subscribe {
2592: my $fname=shift;
2593: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2594: $fname=~s/[\n\r]//g;
2595: my $author=$fname;
2596: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2597: my ($udom,$uname)=split(/\//,$author);
2598: my $home=homeserver($uname,$udom);
2599: if ($home eq 'no_host') {
2600: return 'not_found';
2601: }
2602: my $answer=reply("sub:$fname",$home);
2603: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2604: $answer.=' by '.$home;
2605: }
2606: return $answer;
2607: }
2608:
2609: # -------------------------------------------------------------- Replicate file
2610:
2611: sub repcopy {
2612: my $filename=shift;
2613: $filename=~s/\/+/\//g;
2614: my $londocroot = $perlvar{'lonDocRoot'};
2615: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2616: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2617: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2618: $filename=~m{^/*(uploaded|editupload)/}) {
2619: return &repcopy_userfile($filename);
2620: }
2621: $filename=~s/[\n\r]//g;
2622: my $transname="$filename.in.transfer";
2623: # FIXME: this should flock
2624: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2625: my $remoteurl=subscribe($filename);
2626: if ($remoteurl =~ /^con_lost by/) {
2627: &logthis("Subscribe returned $remoteurl: $filename");
2628: return 'unavailable';
2629: } elsif ($remoteurl eq 'not_found') {
2630: #&logthis("Subscribe returned not_found: $filename");
2631: return 'not_found';
2632: } elsif ($remoteurl =~ /^rejected by/) {
2633: &logthis("Subscribe returned $remoteurl: $filename");
2634: return 'forbidden';
2635: } elsif ($remoteurl eq 'directory') {
2636: return 'ok';
2637: } else {
2638: my $author=$filename;
2639: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2640: my ($udom,$uname)=split(/\//,$author);
2641: my $home=homeserver($uname,$udom);
2642: unless ($home eq $perlvar{'lonHostID'}) {
2643: my @parts=split(/\//,$filename);
2644: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2645: if ($path ne "$londocroot/res") {
2646: &logthis("Malconfiguration for replication: $filename");
2647: return 'bad_request';
2648: }
2649: my $count;
2650: for ($count=5;$count<$#parts;$count++) {
2651: $path.="/$parts[$count]";
2652: if ((-e $path)!=1) {
2653: mkdir($path,0777);
2654: }
2655: }
2656: my $ua=new LWP::UserAgent;
2657: my $request=new HTTP::Request('GET',"$remoteurl");
2658: my $response=$ua->request($request,$transname);
2659: if ($response->is_error()) {
2660: unlink($transname);
2661: my $message=$response->status_line;
2662: &logthis("<font color=\"blue\">WARNING:"
2663: ." LWP get: $message: $filename</font>");
2664: return 'unavailable';
2665: } else {
2666: if ($remoteurl!~/\.meta$/) {
2667: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2668: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2669: if ($mresponse->is_error()) {
2670: unlink($filename.'.meta');
2671: &logthis(
2672: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2673: }
2674: }
2675: rename($transname,$filename);
2676: return 'ok';
2677: }
2678: }
2679: }
2680: }
2681:
2682: # ------------------------------------------------ Get server side include body
2683: sub ssi_body {
2684: my ($filelink,%form)=@_;
2685: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2686: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2687: }
2688: my $output='';
2689: my $response;
2690: if ($filelink=~/^https?\:/) {
2691: ($output,$response)=&externalssi($filelink);
2692: } else {
2693: $filelink .= $filelink=~/\?/ ? '&' : '?';
2694: $filelink .= 'inhibitmenu=yes';
2695: ($output,$response)=&ssi($filelink,%form);
2696: }
2697: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2698: $output=~s/^.*?\<body[^\>]*\>//si;
2699: $output=~s/\<\/body\s*\>.*?$//si;
2700: if (wantarray) {
2701: return ($output, $response);
2702: } else {
2703: return $output;
2704: }
2705: }
2706:
2707: # --------------------------------------------------------- Server Side Include
2708:
2709: sub absolute_url {
2710: my ($host_name) = @_;
2711: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2712: if ($host_name eq '') {
2713: $host_name = $ENV{'SERVER_NAME'};
2714: }
2715: return $protocol.$host_name;
2716: }
2717:
2718: #
2719: # Server side include.
2720: # Parameters:
2721: # fn Possibly encrypted resource name/id.
2722: # form Hash that describes how the rendering should be done
2723: # and other things.
2724: # Returns:
2725: # Scalar context: The content of the response.
2726: # Array context: 2 element list of the content and the full response object.
2727: #
2728: sub ssi {
2729:
2730: my ($fn,%form)=@_;
2731: my $ua=new LWP::UserAgent;
2732: my $request;
2733:
2734: $form{'no_update_last_known'}=1;
2735: &Apache::lonenc::check_encrypt(\$fn);
2736: if (%form) {
2737: $request=new HTTP::Request('POST',&absolute_url().$fn);
2738: $request->content(join('&',map {
2739: my $name = escape($_);
2740: "$name=" . ( ref($form{$_}) eq 'ARRAY'
2741: ? join("&$name=", map {escape($_) } @{$form{$_}})
2742: : &escape($form{$_}) );
2743: } keys(%form)));
2744: } else {
2745: $request=new HTTP::Request('GET',&absolute_url().$fn);
2746: }
2747:
2748: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2749: my $response= $ua->request($request);
2750: if (wantarray) {
2751: return ($response->content, $response);
2752: } else {
2753: return $response->content;
2754: }
2755: }
2756:
2757: sub externalssi {
2758: my ($url)=@_;
2759: my $ua=new LWP::UserAgent;
2760: my $request=new HTTP::Request('GET',$url);
2761: my $response=$ua->request($request);
2762: if (wantarray) {
2763: return ($response->content, $response);
2764: } else {
2765: return $response->content;
2766: }
2767: }
2768:
2769: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2770:
2771: sub allowuploaded {
2772: my ($srcurl,$url)=@_;
2773: $url=&clutter(&declutter($url));
2774: my $dir=$url;
2775: $dir=~s/\/[^\/]+$//;
2776: my %httpref=();
2777: my $httpurl=&hreflocation('',$url);
2778: $httpref{'httpref.'.$httpurl}=$srcurl;
2779: &Apache::lonnet::appenv(\%httpref);
2780: }
2781:
2782: #
2783: # Determine if the current user should be able to edit a particular resource,
2784: # when viewing in course context.
2785: # (a) When viewing resource used to determine if "Edit" item is included in
2786: # Functions.
2787: # (b) When displaying folder contents in course editor, used to determine if
2788: # "Edit" link will be displayed alongside resource.
2789: #
2790: # input: six args -- filename (decluttered), course number, course domain,
2791: # url, symb (if registered) and group (if this is a group
2792: # item -- e.g., bulletin board, group page etc.).
2793: # output: array of five scalars --
2794: # $cfile -- url for file editing if editable on current server
2795: # $home -- homeserver of resource (i.e., for author if published,
2796: # or course if uploaded.).
2797: # $switchserver -- 1 if server switch will be needed.
2798: # $forceedit -- 1 if icon/link should be to go to edit mode
2799: # $forceview -- 1 if icon/link should be to go to view mode
2800: #
2801:
2802: sub can_edit_resource {
2803: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2804: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2805: #
2806: # For aboutme pages user can only edit his/her own.
2807: #
2808: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2809: my ($sdom,$sname) = ($1,$2);
2810: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2811: $home = $env{'user.home'};
2812: $cfile = $resurl;
2813: if ($env{'form.forceedit'}) {
2814: $forceview = 1;
2815: } else {
2816: $forceedit = 1;
2817: }
2818: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2819: } else {
2820: return;
2821: }
2822: }
2823:
2824: if ($env{'request.course.id'}) {
2825: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2826: if ($group ne '') {
2827: # if this is a group homepage or group bulletin board, check group privs
2828: my $allowed = 0;
2829: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2830: if ((&allowed('mdg',$env{'request.course.id'}.
2831: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2832: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2833: $allowed = 1;
2834: }
2835: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2836: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2837: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2838: $allowed = 1;
2839: }
2840: }
2841: if ($allowed) {
2842: $home=&homeserver($cnum,$cdom);
2843: if ($env{'form.forceedit'}) {
2844: $forceview = 1;
2845: } else {
2846: $forceedit = 1;
2847: }
2848: $cfile = $resurl;
2849: } else {
2850: return;
2851: }
2852: } else {
2853: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2854: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2855: return;
2856: }
2857: } elsif (!$crsedit) {
2858: #
2859: # No edit allowed where CC has switched to student role.
2860: #
2861: return;
2862: }
2863: }
2864: }
2865:
2866: if ($file ne '') {
2867: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2868: if (&is_course_upload($file,$cnum,$cdom)) {
2869: $uploaded = 1;
2870: $incourse = 1;
2871: if ($file =~/\.(htm|html|css|js|txt)$/) {
2872: $cfile = &hreflocation('',$file);
2873: if ($env{'form.forceedit'}) {
2874: $forceview = 1;
2875: } else {
2876: $forceedit = 1;
2877: }
2878: }
2879: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2880: $incourse = 1;
2881: if ($env{'form.forceedit'}) {
2882: $forceview = 1;
2883: } else {
2884: $forceedit = 1;
2885: }
2886: $cfile = $resurl;
2887: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2888: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2889: $incourse = 1;
2890: if ($env{'form.forceedit'}) {
2891: $forceview = 1;
2892: } else {
2893: $forceedit = 1;
2894: }
2895: $cfile = $resurl;
2896: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2897: $incourse = 1;
2898: $cfile = $resurl.'/smpedit';
2899: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2900: $incourse = 1;
2901: if ($env{'form.forceedit'}) {
2902: $forceview = 1;
2903: } else {
2904: $forceedit = 1;
2905: }
2906: $cfile = $resurl;
2907: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2908: $incourse = 1;
2909: if ($env{'form.forceedit'}) {
2910: $forceview = 1;
2911: } else {
2912: $forceedit = 1;
2913: }
2914: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2915: }
2916: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2917: my $template = '/res/lib/templates/simpleproblem.problem';
2918: if (&is_on_map($template)) {
2919: $incourse = 1;
2920: $forceview = 1;
2921: $cfile = $template;
2922: }
2923: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2924: $incourse = 1;
2925: if ($env{'form.forceedit'}) {
2926: $forceview = 1;
2927: } else {
2928: $forceedit = 1;
2929: }
2930: $cfile = $resurl;
2931: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2932: $incourse = 1;
2933: $forceview = 1;
2934: if ($symb) {
2935: my ($map,$id,$res)=&decode_symb($symb);
2936: $env{'request.symb'} = $symb;
2937: $cfile = &clutter($res);
2938: } else {
2939: $cfile = $env{'form.suppurl'};
2940: $cfile =~ s{^http://}{};
2941: $cfile = '/adm/wrapper/ext/'.$cfile;
2942: }
2943: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2944: if ($env{'form.forceedit'}) {
2945: $forceview = 1;
2946: } else {
2947: $forceedit = 1;
2948: }
2949: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2950: }
2951: }
2952: if ($uploaded || $incourse) {
2953: $home=&homeserver($cnum,$cdom);
2954: } elsif ($file !~ m{/$}) {
2955: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2956: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2957: # Check that the user has permission to edit this resource
2958: my $setpriv = 1;
2959: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2960: if (defined($cfudom)) {
2961: $home=&homeserver($cfuname,$cfudom);
2962: $cfile=$file;
2963: }
2964: }
2965: if (($cfile ne '') && (!$incourse || $uploaded) &&
2966: (($home ne '') && ($home ne 'no_host'))) {
2967: my @ids=¤t_machine_ids();
2968: unless (grep(/^\Q$home\E$/,@ids)) {
2969: $switchserver=1;
2970: }
2971: }
2972: }
2973: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2974: }
2975:
2976: sub is_course_upload {
2977: my ($file,$cnum,$cdom) = @_;
2978: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2979: $uploadpath =~ s{^\/}{};
2980: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2981: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2982: return 1;
2983: }
2984: return;
2985: }
2986:
2987: sub in_course {
2988: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2989: if ($hideprivileged) {
2990: my $skipuser;
2991: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2992: my @possdoms = ($cdom);
2993: if ($coursehash{'checkforpriv'}) {
2994: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
2995: }
2996: if (&privileged($uname,$udom,\@possdoms)) {
2997: $skipuser = 1;
2998: if ($coursehash{'nothideprivileged'}) {
2999: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3000: my $user;
3001: if ($item =~ /:/) {
3002: $user = $item;
3003: } else {
3004: $user = join(':',split(/[\@]/,$item));
3005: }
3006: if ($user eq $uname.':'.$udom) {
3007: undef($skipuser);
3008: last;
3009: }
3010: }
3011: }
3012: if ($skipuser) {
3013: return 0;
3014: }
3015: }
3016: }
3017: $type ||= 'any';
3018: if (!defined($cdom) || !defined($cnum)) {
3019: my $cid = $env{'request.course.id'};
3020: $cdom = $env{'course.'.$cid.'.domain'};
3021: $cnum = $env{'course.'.$cid.'.num'};
3022: }
3023: my $typesref;
3024: if (($type eq 'any') || ($type eq 'all')) {
3025: $typesref = ['active','previous','future'];
3026: } elsif ($type eq 'previous' || $type eq 'future') {
3027: $typesref = [$type];
3028: }
3029: my %roles = &get_my_roles($uname,$udom,'userroles',
3030: $typesref,undef,[$cdom]);
3031: my ($tmp) = keys(%roles);
3032: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3033: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3034: if (@course_roles > 0) {
3035: return 1;
3036: }
3037: return 0;
3038: }
3039:
3040: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3041: # input: action, courseID, current domain, intended
3042: # path to file, source of file, instruction to parse file for objects,
3043: # ref to hash for embedded objects,
3044: # ref to hash for codebase of java objects.
3045: # reference to scalar to accommodate mime type determined
3046: # from File::MMagic if $parser = parse.
3047: #
3048: # output: url to file (if action was uploaddoc),
3049: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3050: #
3051: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3052: # course.
3053: #
3054: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3055: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3056: # course's home server.
3057: #
3058: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3059: # be copied from $source (current location) to
3060: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3061: # and will then be copied to
3062: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3063: # course's home server.
3064: #
3065: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3066: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3067: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3068: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3069: # in course's home server.
3070: #
3071:
3072: sub process_coursefile {
3073: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3074: $mimetype)=@_;
3075: my $fetchresult;
3076: my $home=&homeserver($docuname,$docudom);
3077: if ($action eq 'propagate') {
3078: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3079: $home);
3080: } else {
3081: my $fpath = '';
3082: my $fname = $file;
3083: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3084: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3085: my $filepath = &build_filepath($fpath);
3086: if ($action eq 'copy') {
3087: if ($source eq '') {
3088: $fetchresult = 'no source file';
3089: return $fetchresult;
3090: } else {
3091: my $destination = $filepath.'/'.$fname;
3092: rename($source,$destination);
3093: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3094: $home);
3095: }
3096: } elsif ($action eq 'uploaddoc') {
3097: open(my $fh,'>'.$filepath.'/'.$fname);
3098: print $fh $env{'form.'.$source};
3099: close($fh);
3100: if ($parser eq 'parse') {
3101: my $mm = new File::MMagic;
3102: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3103: if ($type eq 'text/html') {
3104: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3105: unless ($parse_result eq 'ok') {
3106: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3107: }
3108: }
3109: if (ref($mimetype)) {
3110: $$mimetype = $type;
3111: }
3112: }
3113: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3114: $home);
3115: if ($fetchresult eq 'ok') {
3116: return '/uploaded/'.$fpath.'/'.$fname;
3117: } else {
3118: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3119: ' to host '.$home.': '.$fetchresult);
3120: return '/adm/notfound.html';
3121: }
3122: }
3123: }
3124: unless ( $fetchresult eq 'ok') {
3125: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3126: ' to host '.$home.': '.$fetchresult);
3127: }
3128: return $fetchresult;
3129: }
3130:
3131: sub build_filepath {
3132: my ($fpath) = @_;
3133: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3134: unless ($fpath eq '') {
3135: my @parts=split('/',$fpath);
3136: foreach my $part (@parts) {
3137: $filepath.= '/'.$part;
3138: if ((-e $filepath)!=1) {
3139: mkdir($filepath,0777);
3140: }
3141: }
3142: }
3143: return $filepath;
3144: }
3145:
3146: sub store_edited_file {
3147: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3148: my $file = $primary_url;
3149: $file =~ s#^/uploaded/$docudom/$docuname/##;
3150: my $fpath = '';
3151: my $fname = $file;
3152: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3153: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3154: my $filepath = &build_filepath($fpath);
3155: open(my $fh,'>'.$filepath.'/'.$fname);
3156: print $fh $content;
3157: close($fh);
3158: my $home=&homeserver($docuname,$docudom);
3159: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3160: $home);
3161: if ($$fetchresult eq 'ok') {
3162: return '/uploaded/'.$fpath.'/'.$fname;
3163: } else {
3164: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3165: ' to host '.$home.': '.$$fetchresult);
3166: return '/adm/notfound.html';
3167: }
3168: }
3169:
3170: sub clean_filename {
3171: my ($fname,$args)=@_;
3172: # Replace Windows backslashes by forward slashes
3173: $fname=~s/\\/\//g;
3174: if (!$args->{'keep_path'}) {
3175: # Get rid of everything but the actual filename
3176: $fname=~s/^.*\/([^\/]+)$/$1/;
3177: }
3178: # Replace spaces by underscores
3179: $fname=~s/\s+/\_/g;
3180: # Replace all other weird characters by nothing
3181: $fname=~s{[^/\w\.\-]}{}g;
3182: # Replace all .\d. sequences with _\d. so they no longer look like version
3183: # numbers
3184: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3185: return $fname;
3186: }
3187: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3188: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3189: # image with the same aspect ratio as the original, but with dimensions which do
3190: # not exceed $resizewidth and $resizeheight.
3191:
3192: sub resizeImage {
3193: my ($img_path,$resizewidth,$resizeheight) = @_;
3194: my $ima = Image::Magick->new;
3195: my $resized;
3196: if (-e $img_path) {
3197: $ima->Read($img_path);
3198: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3199: my $width = $ima->Get('width');
3200: my $height = $ima->Get('height');
3201: if ($width > $resizewidth) {
3202: my $factor = $width/$resizewidth;
3203: my $newheight = $height/$factor;
3204: $ima->Scale(width=>$resizewidth,height=>$newheight);
3205: $resized = 1;
3206: }
3207: }
3208: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3209: my $width = $ima->Get('width');
3210: my $height = $ima->Get('height');
3211: if ($height > $resizeheight) {
3212: my $factor = $height/$resizeheight;
3213: my $newwidth = $width/$factor;
3214: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3215: $resized = 1;
3216: }
3217: }
3218: if ($resized) {
3219: $ima->Write($img_path);
3220: }
3221: }
3222: return;
3223: }
3224:
3225: # --------------- Take an uploaded file and put it into the userfiles directory
3226: # input: $formname - the contents of the file are in $env{"form.$formname"}
3227: # the desired filename is in $env{"form.$formname.filename"}
3228: # $context - possible values: coursedoc, existingfile, overwrite,
3229: # canceloverwrite, or ''.
3230: # if 'coursedoc': upload to the current course
3231: # if 'existingfile': write file to tmp/overwrites directory
3232: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3233: # $context is passed as argument to &finishuserfileupload
3234: # $subdir - directory in userfile to store the file into
3235: # $parser - instruction to parse file for objects ($parser = parse)
3236: # $allfiles - reference to hash for embedded objects
3237: # $codebase - reference to hash for codebase of java objects
3238: # $desuname - username for permanent storage of uploaded file
3239: # $dsetudom - domain for permanaent storage of uploaded file
3240: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3241: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3242: # $resizewidth - width (pixels) to which to resize uploaded image
3243: # $resizeheight - height (pixels) to which to resize uploaded image
3244: # $mimetype - reference to scalar to accommodate mime type determined
3245: # from File::MMagic.
3246: #
3247: # output: url of file in userspace, or error: <message>
3248: # or /adm/notfound.html if failure to upload occurse
3249:
3250: sub userfileupload {
3251: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3252: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3253: if (!defined($subdir)) { $subdir='unknown'; }
3254: my $fname=$env{'form.'.$formname.'.filename'};
3255: $fname=&clean_filename($fname);
3256: # See if there is anything left
3257: unless ($fname) { return 'error: no uploaded file'; }
3258: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3259: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3260: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3261: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3262: my $now = time;
3263: my $filepath;
3264: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3265: $filepath = 'tmp/helprequests/'.$now;
3266: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3267: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3268: '_'.$env{'user.domain'}.'/pending';
3269: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3270: my ($docuname,$docudom);
3271: if ($destudom) {
3272: $docudom = $destudom;
3273: } else {
3274: $docudom = $env{'user.domain'};
3275: }
3276: if ($destuname) {
3277: $docuname = $destuname;
3278: } else {
3279: $docuname = $env{'user.name'};
3280: }
3281: if (exists($env{'form.group'})) {
3282: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3283: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3284: }
3285: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3286: if ($context eq 'canceloverwrite') {
3287: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3288: if (-e $tempfile) {
3289: my @info = stat($tempfile);
3290: if ($info[9] eq $env{'form.timestamp'}) {
3291: unlink($tempfile);
3292: }
3293: }
3294: return;
3295: }
3296: }
3297: # Create the directory if not present
3298: my @parts=split(/\//,$filepath);
3299: my $fullpath = $perlvar{'lonDaemons'};
3300: for (my $i=0;$i<@parts;$i++) {
3301: $fullpath .= '/'.$parts[$i];
3302: if ((-e $fullpath)!=1) {
3303: mkdir($fullpath,0777);
3304: }
3305: }
3306: open(my $fh,'>'.$fullpath.'/'.$fname);
3307: print $fh $env{'form.'.$formname};
3308: close($fh);
3309: if ($context eq 'existingfile') {
3310: my @info = stat($fullpath.'/'.$fname);
3311: return ($fullpath.'/'.$fname,$info[9]);
3312: } else {
3313: return $fullpath.'/'.$fname;
3314: }
3315: }
3316: if ($subdir eq 'scantron') {
3317: $fname = 'scantron_orig_'.$fname;
3318: } else {
3319: $fname="$subdir/$fname";
3320: }
3321: if ($context eq 'coursedoc') {
3322: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3323: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3324: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3325: return &finishuserfileupload($docuname,$docudom,
3326: $formname,$fname,$parser,$allfiles,
3327: $codebase,$thumbwidth,$thumbheight,
3328: $resizewidth,$resizeheight,$context,$mimetype);
3329: } else {
3330: if ($env{'form.folder'}) {
3331: $fname=$env{'form.folder'}.'/'.$fname;
3332: }
3333: return &process_coursefile('uploaddoc',$docuname,$docudom,
3334: $fname,$formname,$parser,
3335: $allfiles,$codebase,$mimetype);
3336: }
3337: } elsif (defined($destuname)) {
3338: my $docuname=$destuname;
3339: my $docudom=$destudom;
3340: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3341: $parser,$allfiles,$codebase,
3342: $thumbwidth,$thumbheight,
3343: $resizewidth,$resizeheight,$context,$mimetype);
3344: } else {
3345: my $docuname=$env{'user.name'};
3346: my $docudom=$env{'user.domain'};
3347: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3348: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3349: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3350: }
3351: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3352: $parser,$allfiles,$codebase,
3353: $thumbwidth,$thumbheight,
3354: $resizewidth,$resizeheight,$context,$mimetype);
3355: }
3356: }
3357:
3358: sub finishuserfileupload {
3359: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3360: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3361: my $path=$docudom.'/'.$docuname.'/';
3362: my $filepath=$perlvar{'lonDocRoot'};
3363:
3364: my ($fnamepath,$file,$fetchthumb);
3365: $file=$fname;
3366: if ($fname=~m|/|) {
3367: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3368: $path.=$fnamepath.'/';
3369: }
3370: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3371: my $count;
3372: for ($count=4;$count<=$#parts;$count++) {
3373: $filepath.="/$parts[$count]";
3374: if ((-e $filepath)!=1) {
3375: mkdir($filepath,0777);
3376: }
3377: }
3378:
3379: # Save the file
3380: {
3381: if (!open(FH,'>'.$filepath.'/'.$file)) {
3382: &logthis('Failed to create '.$filepath.'/'.$file);
3383: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3384: return '/adm/notfound.html';
3385: }
3386: if ($context eq 'overwrite') {
3387: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3388: my $target = $filepath.'/'.$file;
3389: if (-e $source) {
3390: my @info = stat($source);
3391: if ($info[9] eq $env{'form.timestamp'}) {
3392: unless (&File::Copy::move($source,$target)) {
3393: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3394: return "Moving from $source failed";
3395: }
3396: } else {
3397: return "Temporary file: $source had unexpected date/time for last modification";
3398: }
3399: } else {
3400: return "Temporary file: $source missing";
3401: }
3402: } elsif (!print FH ($env{'form.'.$formname})) {
3403: &logthis('Failed to write to '.$filepath.'/'.$file);
3404: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3405: return '/adm/notfound.html';
3406: }
3407: close(FH);
3408: if ($resizewidth && $resizeheight) {
3409: my $mm = new File::MMagic;
3410: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3411: if ($mime_type =~ m{^image/}) {
3412: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3413: }
3414: }
3415: }
3416: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3417: if (ref($mimetype)) {
3418: if ($$mimetype eq '') {
3419: my $mm = new File::MMagic;
3420: my $type = $mm->checktype_filename($filepath.'/'.$file);
3421: $$mimetype = $type;
3422: }
3423: }
3424: }
3425: if ($parser eq 'parse') {
3426: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3427: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3428: $allfiles,$codebase);
3429: unless ($parse_result eq 'ok') {
3430: &logthis('Failed to parse '.$filepath.$file.
3431: ' for embedded media: '.$parse_result);
3432: }
3433: }
3434: }
3435: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3436: my $input = $filepath.'/'.$file;
3437: my $output = $filepath.'/'.'tn-'.$file;
3438: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3439: system("convert -sample $thumbsize $input $output");
3440: if (-e $filepath.'/'.'tn-'.$file) {
3441: $fetchthumb = 1;
3442: }
3443: }
3444:
3445: # Notify homeserver to grep it
3446: #
3447: my $docuhome=&homeserver($docuname,$docudom);
3448: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3449: if ($fetchresult eq 'ok') {
3450: if ($fetchthumb) {
3451: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3452: if ($thumbresult ne 'ok') {
3453: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3454: $docuhome.': '.$thumbresult);
3455: }
3456: }
3457: #
3458: # Return the URL to it
3459: return '/uploaded/'.$path.$file;
3460: } else {
3461: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3462: ': '.$fetchresult);
3463: return '/adm/notfound.html';
3464: }
3465: }
3466:
3467: sub extract_embedded_items {
3468: my ($fullpath,$allfiles,$codebase,$content) = @_;
3469: my @state = ();
3470: my (%lastids,%related,%shockwave,%flashvars);
3471: my %javafiles = (
3472: codebase => '',
3473: code => '',
3474: archive => ''
3475: );
3476: my %mediafiles = (
3477: src => '',
3478: movie => '',
3479: );
3480: my $p;
3481: if ($content) {
3482: $p = HTML::LCParser->new($content);
3483: } else {
3484: $p = HTML::LCParser->new($fullpath);
3485: }
3486: while (my $t=$p->get_token()) {
3487: if ($t->[0] eq 'S') {
3488: my ($tagname, $attr) = ($t->[1],$t->[2]);
3489: push(@state, $tagname);
3490: if (lc($tagname) eq 'allow') {
3491: &add_filetype($allfiles,$attr->{'src'},'src');
3492: }
3493: if (lc($tagname) eq 'img') {
3494: &add_filetype($allfiles,$attr->{'src'},'src');
3495: }
3496: if (lc($tagname) eq 'a') {
3497: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3498: &add_filetype($allfiles,$attr->{'href'},'href');
3499: }
3500: }
3501: if (lc($tagname) eq 'script') {
3502: my $src;
3503: if ($attr->{'archive'} =~ /\.jar$/i) {
3504: &add_filetype($allfiles,$attr->{'archive'},'archive');
3505: } else {
3506: if ($attr->{'src'} ne '') {
3507: $src = $attr->{'src'};
3508: &add_filetype($allfiles,$src,'src');
3509: }
3510: }
3511: my $text = $p->get_trimmed_text();
3512: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3513: my @swfargs = split(/,/,$1);
3514: foreach my $item (@swfargs) {
3515: $item =~ s/["']//g;
3516: $item =~ s/^\s+//;
3517: $item =~ s/\s+$//;
3518: }
3519: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3520: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3521: push(@{$related{$swfargs[0]}},$swfargs[2]);
3522: } else {
3523: $related{$swfargs[0]} = [$swfargs[2]];
3524: }
3525: }
3526: }
3527: }
3528: if (lc($tagname) eq 'link') {
3529: if (lc($attr->{'rel'}) eq 'stylesheet') {
3530: &add_filetype($allfiles,$attr->{'href'},'href');
3531: }
3532: }
3533: if (lc($tagname) eq 'object' ||
3534: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3535: foreach my $item (keys(%javafiles)) {
3536: $javafiles{$item} = '';
3537: }
3538: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3539: $lastids{lc($tagname)} = $attr->{'id'};
3540: }
3541: }
3542: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3543: my $name = lc($attr->{'name'});
3544: foreach my $item (keys(%javafiles)) {
3545: if ($name eq $item) {
3546: $javafiles{$item} = $attr->{'value'};
3547: last;
3548: }
3549: }
3550: my $pathfrom;
3551: foreach my $item (keys(%mediafiles)) {
3552: if ($name eq $item) {
3553: $pathfrom = $attr->{'value'};
3554: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3555: &add_filetype($allfiles,$pathfrom,$name);
3556: last;
3557: }
3558: }
3559: if ($name eq 'flashvars') {
3560: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3561: }
3562: if ($pathfrom ne '') {
3563: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3564: $pathfrom);
3565: }
3566: }
3567: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3568: foreach my $item (keys(%javafiles)) {
3569: if ($attr->{$item}) {
3570: $javafiles{$item} = $attr->{$item};
3571: last;
3572: }
3573: }
3574: foreach my $item (keys(%mediafiles)) {
3575: if ($attr->{$item}) {
3576: &add_filetype($allfiles,$attr->{$item},$item);
3577: last;
3578: }
3579: }
3580: if (lc($tagname) eq 'embed') {
3581: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3582: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3583: $attr->{'src'});
3584: }
3585: }
3586: }
3587: if (lc($tagname) eq 'iframe') {
3588: my $src = $attr->{'src'} ;
3589: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3590: &add_filetype($allfiles,$src,'src');
3591: } elsif ($src =~ m{^/}) {
3592: if ($env{'request.course.id'}) {
3593: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3594: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3595: my $url = &hreflocation('',$fullpath);
3596: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3597: my $relpath = $1;
3598: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3599: &add_filetype($allfiles,$1,'src');
3600: }
3601: }
3602: }
3603: }
3604: }
3605: if ($t->[4] =~ m{/>$}) {
3606: pop(@state);
3607: }
3608: } elsif ($t->[0] eq 'E') {
3609: my ($tagname) = ($t->[1]);
3610: if ($javafiles{'codebase'} ne '') {
3611: $javafiles{'codebase'} .= '/';
3612: }
3613: if (lc($tagname) eq 'applet' ||
3614: lc($tagname) eq 'object' ||
3615: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3616: ) {
3617: foreach my $item (keys(%javafiles)) {
3618: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3619: my $file=$javafiles{'codebase'}.$javafiles{$item};
3620: &add_filetype($allfiles,$file,$item);
3621: }
3622: }
3623: }
3624: pop @state;
3625: }
3626: }
3627: foreach my $id (sort(keys(%flashvars))) {
3628: if ($shockwave{$id} ne '') {
3629: my @pairs = split(/\&/,$flashvars{$id});
3630: foreach my $pair (@pairs) {
3631: my ($key,$value) = split(/\=/,$pair);
3632: if ($key eq 'thumb') {
3633: &add_filetype($allfiles,$value,$key);
3634: } elsif ($key eq 'content') {
3635: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3636: my ($ext) = ($value =~ /\.([^.]+)$/);
3637: if ($ext ne '') {
3638: &add_filetype($allfiles,$path.$value,$ext);
3639: }
3640: }
3641: }
3642: }
3643: }
3644: return 'ok';
3645: }
3646:
3647: sub add_filetype {
3648: my ($allfiles,$file,$type)=@_;
3649: if (exists($allfiles->{$file})) {
3650: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3651: push(@{$allfiles->{$file}}, &escape($type));
3652: }
3653: } else {
3654: @{$allfiles->{$file}} = (&escape($type));
3655: }
3656: }
3657:
3658: sub embedded_dependency {
3659: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3660: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3661: if (($identifier ne '') &&
3662: (ref($related->{$identifier}) eq 'ARRAY') &&
3663: ($pathfrom ne '')) {
3664: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3665: foreach my $dep (@{$related->{$identifier}}) {
3666: &add_filetype($allfiles,$path.$dep,'object');
3667: }
3668: }
3669: }
3670: return;
3671: }
3672:
3673: sub removeuploadedurl {
3674: my ($url)=@_;
3675: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3676: return &removeuserfile($uname,$udom,$fname);
3677: }
3678:
3679: sub removeuserfile {
3680: my ($docuname,$docudom,$fname)=@_;
3681: my $home=&homeserver($docuname,$docudom);
3682: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3683: if ($result eq 'ok') {
3684: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3685: my $metafile = $fname.'.meta';
3686: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3687: my $url = "/uploaded/$docudom/$docuname/$fname";
3688: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3689: my $sqlresult =
3690: &update_portfolio_table($docuname,$docudom,$file,
3691: 'portfolio_metadata',$group,
3692: 'delete');
3693: }
3694: }
3695: return $result;
3696: }
3697:
3698: sub mkdiruserfile {
3699: my ($docuname,$docudom,$dir)=@_;
3700: my $home=&homeserver($docuname,$docudom);
3701: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3702: }
3703:
3704: sub renameuserfile {
3705: my ($docuname,$docudom,$old,$new)=@_;
3706: my $home=&homeserver($docuname,$docudom);
3707: my $result = &reply("renameuserfile:$docudom:$docuname:".
3708: &escape("$old").':'.&escape("$new"),$home);
3709: if ($result eq 'ok') {
3710: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3711: my $oldmeta = $old.'.meta';
3712: my $newmeta = $new.'.meta';
3713: my $metaresult =
3714: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3715: my $url = "/uploaded/$docudom/$docuname/$old";
3716: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3717: my $sqlresult =
3718: &update_portfolio_table($docuname,$docudom,$file,
3719: 'portfolio_metadata',$group,
3720: 'delete');
3721: }
3722: }
3723: return $result;
3724: }
3725:
3726: # ------------------------------------------------------------------------- Log
3727:
3728: sub log {
3729: my ($dom,$nam,$hom,$what)=@_;
3730: return critical("log:$dom:$nam:$what",$hom);
3731: }
3732:
3733: # ------------------------------------------------------------------ Course Log
3734: #
3735: # This routine flushes several buffers of non-mission-critical nature
3736: #
3737:
3738: sub flushcourselogs {
3739: &logthis('Flushing log buffers');
3740: #
3741: # course logs
3742: # This is a log of all transactions in a course, which can be used
3743: # for data mining purposes
3744: #
3745: # It also collects the courseid database, which lists last transaction
3746: # times and course titles for all courseids
3747: #
3748: my %courseidbuffer=();
3749: foreach my $crsid (keys(%courselogs)) {
3750: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3751: &escape($courselogs{$crsid}),
3752: $coursehombuf{$crsid}) eq 'ok') {
3753: delete $courselogs{$crsid};
3754: } else {
3755: &logthis('Failed to flush log buffer for '.$crsid);
3756: if (length($courselogs{$crsid})>40000) {
3757: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3758: " exceeded maximum size, deleting.</font>");
3759: delete $courselogs{$crsid};
3760: }
3761: }
3762: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3763: 'description' => $coursedescrbuf{$crsid},
3764: 'inst_code' => $courseinstcodebuf{$crsid},
3765: 'type' => $coursetypebuf{$crsid},
3766: 'owner' => $courseownerbuf{$crsid},
3767: };
3768: }
3769: #
3770: # Write course id database (reverse lookup) to homeserver of courses
3771: # Is used in pickcourse
3772: #
3773: foreach my $crs_home (keys(%courseidbuffer)) {
3774: my $response = &courseidput(&host_domain($crs_home),
3775: $courseidbuffer{$crs_home},
3776: $crs_home,'timeonly');
3777: }
3778: #
3779: # File accesses
3780: # Writes to the dynamic metadata of resources to get hit counts, etc.
3781: #
3782: foreach my $entry (keys(%accesshash)) {
3783: if ($entry =~ /___count$/) {
3784: my ($dom,$name);
3785: ($dom,$name,undef)=
3786: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3787: if (! defined($dom) || $dom eq '' ||
3788: ! defined($name) || $name eq '') {
3789: my $cid = $env{'request.course.id'};
3790: $dom = $env{'request.'.$cid.'.domain'};
3791: $name = $env{'request.'.$cid.'.num'};
3792: }
3793: my $value = $accesshash{$entry};
3794: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3795: my %temphash=($url => $value);
3796: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3797: if ($result eq 'ok') {
3798: delete $accesshash{$entry};
3799: }
3800: } else {
3801: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3802: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3803: my %temphash=($entry => $accesshash{$entry});
3804: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3805: delete $accesshash{$entry};
3806: }
3807: }
3808: }
3809: #
3810: # Roles
3811: # Reverse lookup of user roles for course faculty/staff and co-authorship
3812: #
3813: foreach my $entry (keys(%userrolehash)) {
3814: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3815: split(/\:/,$entry);
3816: if (&Apache::lonnet::put('nohist_userroles',
3817: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3818: $rudom,$runame) eq 'ok') {
3819: delete $userrolehash{$entry};
3820: }
3821: }
3822: #
3823: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3824: #
3825: my %domrolebuffer = ();
3826: foreach my $entry (keys(%domainrolehash)) {
3827: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3828: if ($domrolebuffer{$rudom}) {
3829: $domrolebuffer{$rudom}.='&'.&escape($entry).
3830: '='.&escape($domainrolehash{$entry});
3831: } else {
3832: $domrolebuffer{$rudom}.=&escape($entry).
3833: '='.&escape($domainrolehash{$entry});
3834: }
3835: delete $domainrolehash{$entry};
3836: }
3837: foreach my $dom (keys(%domrolebuffer)) {
3838: my %servers = &get_servers($dom,'library');
3839: foreach my $tryserver (keys(%servers)) {
3840: unless (&reply('domroleput:'.$dom.':'.
3841: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3842: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3843: }
3844: }
3845: }
3846: $dumpcount++;
3847: }
3848:
3849: sub courselog {
3850: my $what=shift;
3851: $what=time.':'.$what;
3852: unless ($env{'request.course.id'}) { return ''; }
3853: $coursedombuf{$env{'request.course.id'}}=
3854: $env{'course.'.$env{'request.course.id'}.'.domain'};
3855: $coursenumbuf{$env{'request.course.id'}}=
3856: $env{'course.'.$env{'request.course.id'}.'.num'};
3857: $coursehombuf{$env{'request.course.id'}}=
3858: $env{'course.'.$env{'request.course.id'}.'.home'};
3859: $coursedescrbuf{$env{'request.course.id'}}=
3860: $env{'course.'.$env{'request.course.id'}.'.description'};
3861: $courseinstcodebuf{$env{'request.course.id'}}=
3862: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3863: $courseownerbuf{$env{'request.course.id'}}=
3864: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3865: $coursetypebuf{$env{'request.course.id'}}=
3866: $env{'course.'.$env{'request.course.id'}.'.type'};
3867: if (defined $courselogs{$env{'request.course.id'}}) {
3868: $courselogs{$env{'request.course.id'}}.='&'.$what;
3869: } else {
3870: $courselogs{$env{'request.course.id'}}.=$what;
3871: }
3872: if (length($courselogs{$env{'request.course.id'}})>4048) {
3873: &flushcourselogs();
3874: }
3875: }
3876:
3877: sub courseacclog {
3878: my $fnsymb=shift;
3879: unless ($env{'request.course.id'}) { return ''; }
3880: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3881: if ($fnsymb=~/$LONCAPA::assess_re/) {
3882: $what.=':POST';
3883: # FIXME: Probably ought to escape things....
3884: foreach my $key (keys(%env)) {
3885: if ($key=~/^form\.(.*)/) {
3886: my $formitem = $1;
3887: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3888: $what.=':'.$formitem.'='.$env{$key};
3889: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3890: $what.=':'.$formitem.'='.$env{$key};
3891: }
3892: }
3893: }
3894: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3895: # FIXME: We should not be depending on a form parameter that someone
3896: # editing lonsearchcat.pm might change in the future.
3897: if ($env{'form.phase'} eq 'course_search') {
3898: $what.= ':POST';
3899: # FIXME: Probably ought to escape things....
3900: foreach my $element ('courseexp','crsfulltext','crsrelated',
3901: 'crsdiscuss') {
3902: $what.=':'.$element.'='.$env{'form.'.$element};
3903: }
3904: }
3905: }
3906: &courselog($what);
3907: }
3908:
3909: sub countacc {
3910: my $url=&declutter(shift);
3911: return if (! defined($url) || $url eq '');
3912: unless ($env{'request.course.id'}) { return ''; }
3913: #
3914: # Mark that this url was used in this course
3915: #
3916: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3917: #
3918: # Increase the access count for this resource in this child process
3919: #
3920: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3921: $accesshash{$key}++;
3922: }
3923:
3924: sub linklog {
3925: my ($from,$to)=@_;
3926: $from=&declutter($from);
3927: $to=&declutter($to);
3928: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3929: $accesshash{$to.'___'.$from.'___goto'}=1;
3930: }
3931:
3932: sub statslog {
3933: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3934: if ($users<2) { return; }
3935: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3936: 'course' => $env{'request.course.id'},
3937: 'sections' => '"all"',
3938: 'num_students' => $users,
3939: 'part' => $part,
3940: 'symb' => $symb,
3941: 'mean_tries' => $av_attempts,
3942: 'deg_of_diff' => $degdiff});
3943: foreach my $key (keys(%dynstore)) {
3944: $accesshash{$key}=$dynstore{$key};
3945: }
3946: }
3947:
3948: sub userrolelog {
3949: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3950: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3951: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3952: $userrolehash
3953: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3954: =$tend.':'.$tstart;
3955: }
3956: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3957: $userrolehash
3958: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3959: =$tend.':'.$tstart;
3960: }
3961: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3962: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3963: $domainrolehash
3964: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3965: = $tend.':'.$tstart;
3966: }
3967: }
3968:
3969: sub courserolelog {
3970: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3971: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3972: my $cdom = $1;
3973: my $cnum = $2;
3974: my $sec = $3;
3975: my $namespace = 'rolelog';
3976: my %storehash = (
3977: role => $trole,
3978: start => $tstart,
3979: end => $tend,
3980: selfenroll => $selfenroll,
3981: context => $context,
3982: );
3983: if ($trole eq 'gr') {
3984: $namespace = 'groupslog';
3985: $storehash{'group'} = $sec;
3986: } else {
3987: $storehash{'section'} = $sec;
3988: }
3989: &write_log('course',$namespace,\%storehash,$delflag,$username,
3990: $domain,$cnum,$cdom);
3991: if (($trole ne 'st') || ($sec ne '')) {
3992: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3993: }
3994: }
3995: return;
3996: }
3997:
3998: sub domainrolelog {
3999: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4000: if ($area =~ m{^/($match_domain)/$}) {
4001: my $cdom = $1;
4002: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4003: my $namespace = 'rolelog';
4004: my %storehash = (
4005: role => $trole,
4006: start => $tstart,
4007: end => $tend,
4008: context => $context,
4009: );
4010: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4011: $domain,$domconfiguser,$cdom);
4012: }
4013: return;
4014:
4015: }
4016:
4017: sub coauthorrolelog {
4018: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4019: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4020: my $audom = $1;
4021: my $auname = $2;
4022: my $namespace = 'rolelog';
4023: my %storehash = (
4024: role => $trole,
4025: start => $tstart,
4026: end => $tend,
4027: context => $context,
4028: );
4029: &write_log('author',$namespace,\%storehash,$delflag,$username,
4030: $domain,$auname,$audom);
4031: }
4032: return;
4033: }
4034:
4035: sub get_course_adv_roles {
4036: my ($cid,$codes) = @_;
4037: $cid=$env{'request.course.id'} unless (defined($cid));
4038: my %coursehash=&coursedescription($cid);
4039: my $crstype = &Apache::loncommon::course_type($cid);
4040: my %nothide=();
4041: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4042: if ($user !~ /:/) {
4043: $nothide{join(':',split(/[\@]/,$user))}=1;
4044: } else {
4045: $nothide{$user}=1;
4046: }
4047: }
4048: my @possdoms = ($coursehash{'domain'});
4049: if ($coursehash{'checkforpriv'}) {
4050: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4051: }
4052: my %returnhash=();
4053: my %dumphash=
4054: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4055: my $now=time;
4056: my %privileged;
4057: foreach my $entry (keys(%dumphash)) {
4058: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4059: if (($tstart) && ($tstart<0)) { next; }
4060: if (($tend) && ($tend<$now)) { next; }
4061: if (($tstart) && ($now<$tstart)) { next; }
4062: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4063: if ($username eq '' || $domain eq '') { next; }
4064: if ((&privileged($username,$domain,\@possdoms)) &&
4065: (!$nothide{$username.':'.$domain})) { next; }
4066: if ($role eq 'cr') { next; }
4067: if ($codes) {
4068: if ($section) { $role .= ':'.$section; }
4069: if ($returnhash{$role}) {
4070: $returnhash{$role}.=','.$username.':'.$domain;
4071: } else {
4072: $returnhash{$role}=$username.':'.$domain;
4073: }
4074: } else {
4075: my $key=&plaintext($role,$crstype);
4076: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4077: if ($returnhash{$key}) {
4078: $returnhash{$key}.=','.$username.':'.$domain;
4079: } else {
4080: $returnhash{$key}=$username.':'.$domain;
4081: }
4082: }
4083: }
4084: return %returnhash;
4085: }
4086:
4087: sub get_my_roles {
4088: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4089: unless (defined($uname)) { $uname=$env{'user.name'}; }
4090: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4091: my (%dumphash,%nothide);
4092: if ($context eq 'userroles') {
4093: %dumphash = &dump('roles',$udom,$uname);
4094: } else {
4095: %dumphash = &dump('nohist_userroles',$udom,$uname);
4096: if ($hidepriv) {
4097: my %coursehash=&coursedescription($udom.'_'.$uname);
4098: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4099: if ($user !~ /:/) {
4100: $nothide{join(':',split(/[\@]/,$user))} = 1;
4101: } else {
4102: $nothide{$user} = 1;
4103: }
4104: }
4105: }
4106: }
4107: my %returnhash=();
4108: my $now=time;
4109: my %privileged;
4110: foreach my $entry (keys(%dumphash)) {
4111: my ($role,$tend,$tstart);
4112: if ($context eq 'userroles') {
4113: next if ($entry =~ /^rolesdef/);
4114: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4115: } else {
4116: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4117: }
4118: if (($tstart) && ($tstart<0)) { next; }
4119: my $status = 'active';
4120: if (($tend) && ($tend<=$now)) {
4121: $status = 'previous';
4122: }
4123: if (($tstart) && ($now<$tstart)) {
4124: $status = 'future';
4125: }
4126: if (ref($types) eq 'ARRAY') {
4127: if (!grep(/^\Q$status\E$/,@{$types})) {
4128: next;
4129: }
4130: } else {
4131: if ($status ne 'active') {
4132: next;
4133: }
4134: }
4135: my ($rolecode,$username,$domain,$section,$area);
4136: if ($context eq 'userroles') {
4137: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4138: (undef,$domain,$username,$section) = split(/\//,$area);
4139: } else {
4140: ($role,$username,$domain,$section) = split(/\:/,$entry);
4141: }
4142: if (ref($roledoms) eq 'ARRAY') {
4143: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4144: next;
4145: }
4146: }
4147: if (ref($roles) eq 'ARRAY') {
4148: if (!grep(/^\Q$role\E$/,@{$roles})) {
4149: if ($role =~ /^cr\//) {
4150: if (!grep(/^cr$/,@{$roles})) {
4151: next;
4152: }
4153: } elsif ($role =~ /^gr\//) {
4154: if (!grep(/^gr$/,@{$roles})) {
4155: next;
4156: }
4157: } else {
4158: next;
4159: }
4160: }
4161: }
4162: if ($hidepriv) {
4163: my @privroles = ('dc','su');
4164: if ($context eq 'userroles') {
4165: next if (grep(/^\Q$role\E$/,@privroles));
4166: } else {
4167: my $possdoms = [$domain];
4168: if (ref($roledoms) eq 'ARRAY') {
4169: push(@{$possdoms},@{$roledoms});
4170: }
4171: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4172: if (!$nothide{$username.':'.$domain}) {
4173: next;
4174: }
4175: }
4176: }
4177: }
4178: if ($withsec) {
4179: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4180: $tstart.':'.$tend;
4181: } else {
4182: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4183: }
4184: }
4185: return %returnhash;
4186: }
4187:
4188: # ----------------------------------------------------- Frontpage Announcements
4189: #
4190: #
4191:
4192: sub postannounce {
4193: my ($server,$text)=@_;
4194: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4195: unless ($text=~/\w/) { $text=''; }
4196: return &reply('setannounce:'.&escape($text),$server);
4197: }
4198:
4199: sub getannounce {
4200:
4201: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4202: my $announcement='';
4203: while (my $line = <$fh>) { $announcement .= $line; }
4204: close($fh);
4205: if ($announcement=~/\w/) {
4206: return
4207: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4208: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4209: } else {
4210: return '';
4211: }
4212: } else {
4213: return '';
4214: }
4215: }
4216:
4217: # ---------------------------------------------------------- Course ID routines
4218: # Deal with domain's nohist_courseid.db files
4219: #
4220:
4221: sub courseidput {
4222: my ($domain,$storehash,$coursehome,$caller) = @_;
4223: return unless (ref($storehash) eq 'HASH');
4224: my $outcome;
4225: if ($caller eq 'timeonly') {
4226: my $cids = '';
4227: foreach my $item (keys(%$storehash)) {
4228: $cids.=&escape($item).'&';
4229: }
4230: $cids=~s/\&$//;
4231: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4232: $coursehome);
4233: } else {
4234: my $items = '';
4235: foreach my $item (keys(%$storehash)) {
4236: $items.= &escape($item).'='.
4237: &freeze_escape($$storehash{$item}).'&';
4238: }
4239: $items=~s/\&$//;
4240: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4241: $coursehome);
4242: }
4243: if ($outcome eq 'unknown_cmd') {
4244: my $what;
4245: foreach my $cid (keys(%$storehash)) {
4246: $what .= &escape($cid).'=';
4247: foreach my $item ('description','inst_code','owner','type') {
4248: $what .= &escape($storehash->{$cid}{$item}).':';
4249: }
4250: $what =~ s/\:$/&/;
4251: }
4252: $what =~ s/\&$//;
4253: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4254: } else {
4255: return $outcome;
4256: }
4257: }
4258:
4259: sub courseiddump {
4260: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4261: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4262: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4263: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4264: $hasuniquecode)=@_;
4265: my $as_hash = 1;
4266: my %returnhash;
4267: if (!$domfilter) { $domfilter=''; }
4268: my %libserv = &all_library();
4269: foreach my $tryserver (keys(%libserv)) {
4270: if ( ( $hostidflag == 1
4271: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4272: || (!defined($hostidflag)) ) {
4273:
4274: if (($domfilter eq '') ||
4275: (&host_domain($tryserver) eq $domfilter)) {
4276: my $rep;
4277: if (grep { $_ eq $tryserver } ¤t_machine_ids()) {
4278: $rep = &LONCAPA::Lond::dump_course_id_handler(
4279: join(":", (&host_domain($tryserver), $sincefilter,
4280: &escape($descfilter), &escape($instcodefilter),
4281: &escape($ownerfilter), &escape($coursefilter),
4282: &escape($typefilter), &escape($regexp_ok),
4283: $as_hash, &escape($selfenrollonly),
4284: &escape($catfilter), $showhidden, $caller,
4285: &escape($cloner), &escape($cc_clone), $cloneonly,
4286: &escape($createdbefore), &escape($createdafter),
4287: &escape($creationcontext), $domcloner, $hasuniquecode)));
4288: } else {
4289: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4290: $sincefilter.':'.&escape($descfilter).':'.
4291: &escape($instcodefilter).':'.&escape($ownerfilter).
4292: ':'.&escape($coursefilter).':'.&escape($typefilter).
4293: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4294: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4295: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4296: &escape($cc_clone).':'.$cloneonly.':'.
4297: &escape($createdbefore).':'.&escape($createdafter).':'.
4298: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode,
4299: $tryserver);
4300: }
4301:
4302: my @pairs=split(/\&/,$rep);
4303: foreach my $item (@pairs) {
4304: my ($key,$value)=split(/\=/,$item,2);
4305: $key = &unescape($key);
4306: next if ($key =~ /^error: 2 /);
4307: my $result = &thaw_unescape($value);
4308: if (ref($result) eq 'HASH') {
4309: $returnhash{$key}=$result;
4310: } else {
4311: my @responses = split(/:/,$value);
4312: my @items = ('description','inst_code','owner','type');
4313: for (my $i=0; $i<@responses; $i++) {
4314: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4315: }
4316: }
4317: }
4318: }
4319: }
4320: }
4321: return %returnhash;
4322: }
4323:
4324: sub courselastaccess {
4325: my ($cdom,$cnum,$hostidref) = @_;
4326: my %returnhash;
4327: if ($cdom && $cnum) {
4328: my $chome = &homeserver($cnum,$cdom);
4329: if ($chome ne 'no_host') {
4330: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4331: &extract_lastaccess(\%returnhash,$rep);
4332: }
4333: } else {
4334: if (!$cdom) { $cdom=''; }
4335: my %libserv = &all_library();
4336: foreach my $tryserver (keys(%libserv)) {
4337: if (ref($hostidref) eq 'ARRAY') {
4338: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4339: }
4340: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4341: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4342: &extract_lastaccess(\%returnhash,$rep);
4343: }
4344: }
4345: }
4346: return %returnhash;
4347: }
4348:
4349: sub extract_lastaccess {
4350: my ($returnhash,$rep) = @_;
4351: if (ref($returnhash) eq 'HASH') {
4352: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4353: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4354: $rep eq '') {
4355: my @pairs=split(/\&/,$rep);
4356: foreach my $item (@pairs) {
4357: my ($key,$value)=split(/\=/,$item,2);
4358: $key = &unescape($key);
4359: next if ($key =~ /^error: 2 /);
4360: $returnhash->{$key} = &thaw_unescape($value);
4361: }
4362: }
4363: }
4364: return;
4365: }
4366:
4367: # ---------------------------------------------------------- DC e-mail
4368:
4369: sub dcmailput {
4370: my ($domain,$msgid,$message,$server)=@_;
4371: my $status = &Apache::lonnet::critical(
4372: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4373: &escape($message),$server);
4374: return $status;
4375: }
4376:
4377: sub dcmaildump {
4378: my ($dom,$startdate,$enddate,$senders) = @_;
4379: my %returnhash=();
4380:
4381: if (defined(&domain($dom,'primary'))) {
4382: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4383: &escape($enddate).':';
4384: my @esc_senders=map { &escape($_)} @$senders;
4385: $cmd.=&escape(join('&',@esc_senders));
4386: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4387: my ($key,$value) = split(/\=/,$line,2);
4388: if (($key) && ($value)) {
4389: $returnhash{&unescape($key)} = &unescape($value);
4390: }
4391: }
4392: }
4393: return %returnhash;
4394: }
4395: # ---------------------------------------------------------- Domain roles
4396:
4397: sub get_domain_roles {
4398: my ($dom,$roles,$startdate,$enddate)=@_;
4399: if ((!defined($startdate)) || ($startdate eq '')) {
4400: $startdate = '.';
4401: }
4402: if ((!defined($enddate)) || ($enddate eq '')) {
4403: $enddate = '.';
4404: }
4405: my $rolelist;
4406: if (ref($roles) eq 'ARRAY') {
4407: $rolelist = join('&',@{$roles});
4408: }
4409: my %personnel = ();
4410:
4411: my %servers = &get_servers($dom,'library');
4412: foreach my $tryserver (keys(%servers)) {
4413: %{$personnel{$tryserver}}=();
4414: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4415: &escape($startdate).':'.
4416: &escape($enddate).':'.
4417: &escape($rolelist), $tryserver))) {
4418: my ($key,$value) = split(/\=/,$line,2);
4419: if (($key) && ($value)) {
4420: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4421: }
4422: }
4423: }
4424: return %personnel;
4425: }
4426:
4427: # ----------------------------------------------------------- Interval timing
4428:
4429: {
4430: # Caches needed for speedup of navmaps
4431: # We don't want to cache this for very long at all (5 seconds at most)
4432: #
4433: # The user for whom we cache
4434: my $cachedkey='';
4435: # The cached times for this user
4436: my %cachedtimes=();
4437: # When this was last done
4438: my $cachedtime=();
4439:
4440: sub load_all_first_access {
4441: my ($uname,$udom)=@_;
4442: if (($cachedkey eq $uname.':'.$udom) &&
4443: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4444: return;
4445: }
4446: $cachedtime=time;
4447: $cachedkey=$uname.':'.$udom;
4448: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4449: }
4450:
4451: sub get_first_access {
4452: my ($type,$argsymb,$argmap)=@_;
4453: my ($symb,$courseid,$udom,$uname)=&whichuser();
4454: if ($argsymb) { $symb=$argsymb; }
4455: my ($map,$id,$res)=&decode_symb($symb);
4456: if ($argmap) { $map = $argmap; }
4457: if ($type eq 'course') {
4458: $res='course';
4459: } elsif ($type eq 'map') {
4460: $res=&symbread($map);
4461: } else {
4462: $res=$symb;
4463: }
4464: &load_all_first_access($uname,$udom);
4465: return $cachedtimes{"$courseid\0$res"};
4466: }
4467:
4468: sub set_first_access {
4469: my ($type,$interval)=@_;
4470: my ($symb,$courseid,$udom,$uname)=&whichuser();
4471: my ($map,$id,$res)=&decode_symb($symb);
4472: if ($type eq 'course') {
4473: $res='course';
4474: } elsif ($type eq 'map') {
4475: $res=&symbread($map);
4476: } else {
4477: $res=$symb;
4478: }
4479: $cachedkey='';
4480: my $firstaccess=&get_first_access($type,$symb,$map);
4481: if (!$firstaccess) {
4482: my $start = time;
4483: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4484: $udom,$uname);
4485: if ($putres eq 'ok') {
4486: &put('timerinterval',{"$courseid\0$res"=>$interval},
4487: $udom,$uname);
4488: &appenv(
4489: {
4490: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4491: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4492: }
4493: );
4494: }
4495: return $putres;
4496: }
4497: return 'already_set';
4498: }
4499: }
4500:
4501: sub checkout {
4502: my ($symb,$tuname,$tudom,$tcrsid)=@_;
4503: my $now=time;
4504: my $lonhost=$perlvar{'lonHostID'};
4505: my $infostr=&escape(
4506: 'CHECKOUTTOKEN&'.
4507: $tuname.'&'.
4508: $tudom.'&'.
4509: $tcrsid.'&'.
4510: $symb.'&'.
4511: $now.'&'.$ENV{'REMOTE_ADDR'});
4512: my $token=&reply('tmpput:'.$infostr,$lonhost);
4513: if ($token=~/^error\:/) {
4514: &logthis("<font color=\"blue\">WARNING: ".
4515: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
4516: "</font>");
4517: return '';
4518: }
4519:
4520: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
4521: $token=~tr/a-z/A-Z/;
4522:
4523: my %infohash=('resource.0.outtoken' => $token,
4524: 'resource.0.checkouttime' => $now,
4525: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
4526:
4527: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
4528: return '';
4529: } else {
4530: &logthis("<font color=\"blue\">WARNING: ".
4531: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
4532: "</font>");
4533: }
4534:
4535: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
4536: &escape('Checkout '.$infostr.' - '.
4537: $token)) ne 'ok') {
4538: return '';
4539: } else {
4540: &logthis("<font color=\"blue\">WARNING: ".
4541: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
4542: "</font>");
4543: }
4544: return $token;
4545: }
4546:
4547: # ------------------------------------------------------------ Check in an item
4548:
4549: sub checkin {
4550: my $token=shift;
4551: my $now=time;
4552: my ($ta,$tb,$lonhost)=split(/\*/,$token);
4553: $lonhost=~tr/A-Z/a-z/;
4554: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
4555: $dtoken=~s/\W/\_/g;
4556: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
4557: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
4558:
4559: unless (($tuname) && ($tudom)) {
4560: &logthis('Check in '.$token.' ('.$dtoken.') failed');
4561: return '';
4562: }
4563:
4564: unless (&allowed('mgr',$tcrsid)) {
4565: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
4566: $env{'user.name'}.' - '.$env{'user.domain'});
4567: return '';
4568: }
4569:
4570: my %infohash=('resource.0.intoken' => $token,
4571: 'resource.0.checkintime' => $now,
4572: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
4573:
4574: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
4575: return '';
4576: }
4577:
4578: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
4579: &escape('Checkin - '.$token)) ne 'ok') {
4580: return '';
4581: }
4582:
4583: return ($symb,$tuname,$tudom,$tcrsid);
4584: }
4585:
4586: # --------------------------------------------- Set Expire Date for Spreadsheet
4587:
4588: sub expirespread {
4589: my ($uname,$udom,$stype,$usymb)=@_;
4590: my $cid=$env{'request.course.id'};
4591: if ($cid) {
4592: my $now=time;
4593: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4594: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4595: $env{'course.'.$cid.'.num'}.
4596: ':nohist_expirationdates:'.
4597: &escape($key).'='.$now,
4598: $env{'course.'.$cid.'.home'})
4599: }
4600: return 'ok';
4601: }
4602:
4603: # ----------------------------------------------------- Devalidate Spreadsheets
4604:
4605: sub devalidate {
4606: my ($symb,$uname,$udom)=@_;
4607: my $cid=$env{'request.course.id'};
4608: if ($cid) {
4609: # delete the stored spreadsheets for
4610: # - the student level sheet of this user in course's homespace
4611: # - the assessment level sheet for this resource
4612: # for this user in user's homespace
4613: # - current conditional state info
4614: my $key=$uname.':'.$udom.':';
4615: my $status=
4616: &del('nohist_calculatedsheets',
4617: [$key.'studentcalc:'],
4618: $env{'course.'.$cid.'.domain'},
4619: $env{'course.'.$cid.'.num'})
4620: .' '.
4621: &del('nohist_calculatedsheets_'.$cid,
4622: [$key.'assesscalc:'.$symb],$udom,$uname);
4623: unless ($status eq 'ok ok') {
4624: &logthis('Could not devalidate spreadsheet '.
4625: $uname.' at '.$udom.' for '.
4626: $symb.': '.$status);
4627: }
4628: &delenv('user.state.'.$cid);
4629: }
4630: }
4631:
4632: sub get_scalar {
4633: my ($string,$end) = @_;
4634: my $value;
4635: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4636: $value = $1;
4637: } elsif ($$string =~ s/^([^&]*?)&//) {
4638: $value = $1;
4639: }
4640: return &unescape($value);
4641: }
4642:
4643: sub array2str {
4644: my (@array) = @_;
4645: my $result=&arrayref2str(\@array);
4646: $result=~s/^__ARRAY_REF__//;
4647: $result=~s/__END_ARRAY_REF__$//;
4648: return $result;
4649: }
4650:
4651: sub arrayref2str {
4652: my ($arrayref) = @_;
4653: my $result='__ARRAY_REF__';
4654: foreach my $elem (@$arrayref) {
4655: if(ref($elem) eq 'ARRAY') {
4656: $result.=&arrayref2str($elem).'&';
4657: } elsif(ref($elem) eq 'HASH') {
4658: $result.=&hashref2str($elem).'&';
4659: } elsif(ref($elem)) {
4660: #print("Got a ref of ".(ref($elem))." skipping.");
4661: } else {
4662: $result.=&escape($elem).'&';
4663: }
4664: }
4665: $result=~s/\&$//;
4666: $result .= '__END_ARRAY_REF__';
4667: return $result;
4668: }
4669:
4670: sub hash2str {
4671: my (%hash) = @_;
4672: my $result=&hashref2str(\%hash);
4673: $result=~s/^__HASH_REF__//;
4674: $result=~s/__END_HASH_REF__$//;
4675: return $result;
4676: }
4677:
4678: sub hashref2str {
4679: my ($hashref)=@_;
4680: my $result='__HASH_REF__';
4681: foreach my $key (sort(keys(%$hashref))) {
4682: if (ref($key) eq 'ARRAY') {
4683: $result.=&arrayref2str($key).'=';
4684: } elsif (ref($key) eq 'HASH') {
4685: $result.=&hashref2str($key).'=';
4686: } elsif (ref($key)) {
4687: $result.='=';
4688: #print("Got a ref of ".(ref($key))." skipping.");
4689: } else {
4690: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4691: }
4692:
4693: if(ref($hashref->{$key}) eq 'ARRAY') {
4694: $result.=&arrayref2str($hashref->{$key}).'&';
4695: } elsif(ref($hashref->{$key}) eq 'HASH') {
4696: $result.=&hashref2str($hashref->{$key}).'&';
4697: } elsif(ref($hashref->{$key})) {
4698: $result.='&';
4699: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4700: } else {
4701: $result.=&escape($hashref->{$key}).'&';
4702: }
4703: }
4704: $result=~s/\&$//;
4705: $result .= '__END_HASH_REF__';
4706: return $result;
4707: }
4708:
4709: sub str2hash {
4710: my ($string)=@_;
4711: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4712: return %$hash;
4713: }
4714:
4715: sub str2hashref {
4716: my ($string) = @_;
4717:
4718: my %hash;
4719:
4720: if($string !~ /^__HASH_REF__/) {
4721: if (! ($string eq '' || !defined($string))) {
4722: $hash{'error'}='Not hash reference';
4723: }
4724: return (\%hash, $string);
4725: }
4726:
4727: $string =~ s/^__HASH_REF__//;
4728:
4729: while($string !~ /^__END_HASH_REF__/) {
4730: #key
4731: my $key='';
4732: if($string =~ /^__HASH_REF__/) {
4733: ($key, $string)=&str2hashref($string);
4734: if(defined($key->{'error'})) {
4735: $hash{'error'}='Bad data';
4736: return (\%hash, $string);
4737: }
4738: } elsif($string =~ /^__ARRAY_REF__/) {
4739: ($key, $string)=&str2arrayref($string);
4740: if($key->[0] eq 'Array reference error') {
4741: $hash{'error'}='Bad data';
4742: return (\%hash, $string);
4743: }
4744: } else {
4745: $string =~ s/^(.*?)=//;
4746: $key=&unescape($1);
4747: }
4748: $string =~ s/^=//;
4749:
4750: #value
4751: my $value='';
4752: if($string =~ /^__HASH_REF__/) {
4753: ($value, $string)=&str2hashref($string);
4754: if(defined($value->{'error'})) {
4755: $hash{'error'}='Bad data';
4756: return (\%hash, $string);
4757: }
4758: } elsif($string =~ /^__ARRAY_REF__/) {
4759: ($value, $string)=&str2arrayref($string);
4760: if($value->[0] eq 'Array reference error') {
4761: $hash{'error'}='Bad data';
4762: return (\%hash, $string);
4763: }
4764: } else {
4765: $value=&get_scalar(\$string,'__END_HASH_REF__');
4766: }
4767: $string =~ s/^&//;
4768:
4769: $hash{$key}=$value;
4770: }
4771:
4772: $string =~ s/^__END_HASH_REF__//;
4773:
4774: return (\%hash, $string);
4775: }
4776:
4777: sub str2array {
4778: my ($string)=@_;
4779: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4780: return @$array;
4781: }
4782:
4783: sub str2arrayref {
4784: my ($string) = @_;
4785: my @array;
4786:
4787: if($string !~ /^__ARRAY_REF__/) {
4788: if (! ($string eq '' || !defined($string))) {
4789: $array[0]='Array reference error';
4790: }
4791: return (\@array, $string);
4792: }
4793:
4794: $string =~ s/^__ARRAY_REF__//;
4795:
4796: while($string !~ /^__END_ARRAY_REF__/) {
4797: my $value='';
4798: if($string =~ /^__HASH_REF__/) {
4799: ($value, $string)=&str2hashref($string);
4800: if(defined($value->{'error'})) {
4801: $array[0] ='Array reference error';
4802: return (\@array, $string);
4803: }
4804: } elsif($string =~ /^__ARRAY_REF__/) {
4805: ($value, $string)=&str2arrayref($string);
4806: if($value->[0] eq 'Array reference error') {
4807: $array[0] ='Array reference error';
4808: return (\@array, $string);
4809: }
4810: } else {
4811: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4812: }
4813: $string =~ s/^&//;
4814:
4815: push(@array, $value);
4816: }
4817:
4818: $string =~ s/^__END_ARRAY_REF__//;
4819:
4820: return (\@array, $string);
4821: }
4822:
4823: # -------------------------------------------------------------------Temp Store
4824:
4825: sub tmpreset {
4826: my ($symb,$namespace,$domain,$stuname) = @_;
4827: if (!$symb) {
4828: $symb=&symbread();
4829: if (!$symb) { $symb= $env{'request.url'}; }
4830: }
4831: $symb=escape($symb);
4832:
4833: if (!$namespace) { $namespace=$env{'request.state'}; }
4834: $namespace=~s/\//\_/g;
4835: $namespace=~s/\W//g;
4836:
4837: if (!$domain) { $domain=$env{'user.domain'}; }
4838: if (!$stuname) { $stuname=$env{'user.name'}; }
4839: if ($domain eq 'public' && $stuname eq 'public') {
4840: $stuname=$ENV{'REMOTE_ADDR'};
4841: }
4842: my $path=LONCAPA::tempdir();
4843: my %hash;
4844: if (tie(%hash,'GDBM_File',
4845: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4846: &GDBM_WRCREAT(),0640)) {
4847: foreach my $key (keys(%hash)) {
4848: if ($key=~ /:$symb/) {
4849: delete($hash{$key});
4850: }
4851: }
4852: }
4853: }
4854:
4855: sub tmpstore {
4856: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4857:
4858: if (!$symb) {
4859: $symb=&symbread();
4860: if (!$symb) { $symb= $env{'request.url'}; }
4861: }
4862: $symb=escape($symb);
4863:
4864: if (!$namespace) {
4865: # I don't think we would ever want to store this for a course.
4866: # it seems this will only be used if we don't have a course.
4867: #$namespace=$env{'request.course.id'};
4868: #if (!$namespace) {
4869: $namespace=$env{'request.state'};
4870: #}
4871: }
4872: $namespace=~s/\//\_/g;
4873: $namespace=~s/\W//g;
4874: if (!$domain) { $domain=$env{'user.domain'}; }
4875: if (!$stuname) { $stuname=$env{'user.name'}; }
4876: if ($domain eq 'public' && $stuname eq 'public') {
4877: $stuname=$ENV{'REMOTE_ADDR'};
4878: }
4879: my $now=time;
4880: my %hash;
4881: my $path=LONCAPA::tempdir();
4882: if (tie(%hash,'GDBM_File',
4883: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4884: &GDBM_WRCREAT(),0640)) {
4885: $hash{"version:$symb"}++;
4886: my $version=$hash{"version:$symb"};
4887: my $allkeys='';
4888: foreach my $key (keys(%$storehash)) {
4889: $allkeys.=$key.':';
4890: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4891: }
4892: $hash{"$version:$symb:timestamp"}=$now;
4893: $allkeys.='timestamp';
4894: $hash{"$version:keys:$symb"}=$allkeys;
4895: if (untie(%hash)) {
4896: return 'ok';
4897: } else {
4898: return "error:$!";
4899: }
4900: } else {
4901: return "error:$!";
4902: }
4903: }
4904:
4905: # -----------------------------------------------------------------Temp Restore
4906:
4907: sub tmprestore {
4908: my ($symb,$namespace,$domain,$stuname) = @_;
4909:
4910: if (!$symb) {
4911: $symb=&symbread();
4912: if (!$symb) { $symb= $env{'request.url'}; }
4913: }
4914: $symb=escape($symb);
4915:
4916: if (!$namespace) { $namespace=$env{'request.state'}; }
4917:
4918: if (!$domain) { $domain=$env{'user.domain'}; }
4919: if (!$stuname) { $stuname=$env{'user.name'}; }
4920: if ($domain eq 'public' && $stuname eq 'public') {
4921: $stuname=$ENV{'REMOTE_ADDR'};
4922: }
4923: my %returnhash;
4924: $namespace=~s/\//\_/g;
4925: $namespace=~s/\W//g;
4926: my %hash;
4927: my $path=LONCAPA::tempdir();
4928: if (tie(%hash,'GDBM_File',
4929: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4930: &GDBM_READER(),0640)) {
4931: my $version=$hash{"version:$symb"};
4932: $returnhash{'version'}=$version;
4933: my $scope;
4934: for ($scope=1;$scope<=$version;$scope++) {
4935: my $vkeys=$hash{"$scope:keys:$symb"};
4936: my @keys=split(/:/,$vkeys);
4937: my $key;
4938: $returnhash{"$scope:keys"}=$vkeys;
4939: foreach $key (@keys) {
4940: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4941: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4942: }
4943: }
4944: if (!(untie(%hash))) {
4945: return "error:$!";
4946: }
4947: } else {
4948: return "error:$!";
4949: }
4950: return %returnhash;
4951: }
4952:
4953: # ----------------------------------------------------------------------- Store
4954:
4955: sub store {
4956: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4957: my $home='';
4958:
4959: if ($stuname) { $home=&homeserver($stuname,$domain); }
4960:
4961: $symb=&symbclean($symb);
4962: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4963:
4964: if (!$domain) { $domain=$env{'user.domain'}; }
4965: if (!$stuname) { $stuname=$env{'user.name'}; }
4966:
4967: &devalidate($symb,$stuname,$domain);
4968:
4969: $symb=escape($symb);
4970: if (!$namespace) {
4971: unless ($namespace=$env{'request.course.id'}) {
4972: return '';
4973: }
4974: }
4975: if (!$home) { $home=$env{'user.home'}; }
4976:
4977: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4978: $$storehash{'host'}=$perlvar{'lonHostID'};
4979:
4980: my $namevalue='';
4981: foreach my $key (keys(%$storehash)) {
4982: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4983: }
4984: $namevalue=~s/\&$//;
4985: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4986: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4987: }
4988:
4989: # -------------------------------------------------------------- Critical Store
4990:
4991: sub cstore {
4992: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4993: my $home='';
4994:
4995: if ($stuname) { $home=&homeserver($stuname,$domain); }
4996:
4997: $symb=&symbclean($symb);
4998: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4999:
5000: if (!$domain) { $domain=$env{'user.domain'}; }
5001: if (!$stuname) { $stuname=$env{'user.name'}; }
5002:
5003: &devalidate($symb,$stuname,$domain);
5004:
5005: $symb=escape($symb);
5006: if (!$namespace) {
5007: unless ($namespace=$env{'request.course.id'}) {
5008: return '';
5009: }
5010: }
5011: if (!$home) { $home=$env{'user.home'}; }
5012:
5013: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5014: $$storehash{'host'}=$perlvar{'lonHostID'};
5015:
5016: my $namevalue='';
5017: foreach my $key (keys(%$storehash)) {
5018: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5019: }
5020: $namevalue=~s/\&$//;
5021: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5022: return critical
5023: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
5024: }
5025:
5026: # --------------------------------------------------------------------- Restore
5027:
5028: sub restore {
5029: my ($symb,$namespace,$domain,$stuname) = @_;
5030: my $home='';
5031:
5032: if ($stuname) { $home=&homeserver($stuname,$domain); }
5033:
5034: if (!$symb) {
5035: return if ($namespace eq 'courserequests');
5036: unless ($symb=escape(&symbread())) { return ''; }
5037: } else {
5038: unless ($namespace eq 'courserequests') {
5039: $symb=&escape(&symbclean($symb));
5040: }
5041: }
5042: if (!$namespace) {
5043: unless ($namespace=$env{'request.course.id'}) {
5044: return '';
5045: }
5046: }
5047: if (!$domain) { $domain=$env{'user.domain'}; }
5048: if (!$stuname) { $stuname=$env{'user.name'}; }
5049: if (!$home) { $home=$env{'user.home'}; }
5050: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5051:
5052: my %returnhash=();
5053: foreach my $line (split(/\&/,$answer)) {
5054: my ($name,$value)=split(/\=/,$line);
5055: $returnhash{&unescape($name)}=&thaw_unescape($value);
5056: }
5057: my $version;
5058: for ($version=1;$version<=$returnhash{'version'};$version++) {
5059: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5060: $returnhash{$item}=$returnhash{$version.':'.$item};
5061: }
5062: }
5063: return %returnhash;
5064: }
5065:
5066: # ---------------------------------------------------------- Course Description
5067: #
5068: #
5069:
5070: sub coursedescription {
5071: my ($courseid,$args)=@_;
5072: $courseid=~s/^\///;
5073: $courseid=~s/\_/\//g;
5074: my ($cdomain,$cnum)=split(/\//,$courseid);
5075: my $chome=&homeserver($cnum,$cdomain);
5076: my $normalid=$cdomain.'_'.$cnum;
5077: # need to always cache even if we get errors otherwise we keep
5078: # trying and trying and trying to get the course description.
5079: my %envhash=();
5080: my %returnhash=();
5081:
5082: my $expiretime=600;
5083: if ($env{'request.course.id'} eq $normalid) {
5084: $expiretime=120;
5085: }
5086:
5087: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5088: if (!$args->{'freshen_cache'}
5089: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5090: foreach my $key (keys(%env)) {
5091: next if ($key !~ /^\Q$prefix\E(.*)/);
5092: my ($setting) = $1;
5093: $returnhash{$setting} = $env{$key};
5094: }
5095: return %returnhash;
5096: }
5097:
5098: # get the data again
5099:
5100: if (!$args->{'one_time'}) {
5101: $envhash{'course.'.$normalid.'.last_cache'}=time;
5102: }
5103:
5104: if ($chome ne 'no_host') {
5105: %returnhash=&dump('environment',$cdomain,$cnum);
5106: if (!exists($returnhash{'con_lost'})) {
5107: my $username = $env{'user.name'}; # Defult username
5108: if(defined $args->{'user'}) {
5109: $username = $args->{'user'};
5110: }
5111: $returnhash{'home'}= $chome;
5112: $returnhash{'domain'} = $cdomain;
5113: $returnhash{'num'} = $cnum;
5114: if (!defined($returnhash{'type'})) {
5115: $returnhash{'type'} = 'Course';
5116: }
5117: while (my ($name,$value) = each %returnhash) {
5118: $envhash{'course.'.$normalid.'.'.$name}=$value;
5119: }
5120: $returnhash{'url'}=&clutter($returnhash{'url'});
5121: $returnhash{'fn'}=LONCAPA::tempdir() .
5122: $username.'_'.$cdomain.'_'.$cnum;
5123: $envhash{'course.'.$normalid.'.home'}=$chome;
5124: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5125: $envhash{'course.'.$normalid.'.num'}=$cnum;
5126: }
5127: }
5128: if (!$args->{'one_time'}) {
5129: &appenv(\%envhash);
5130: }
5131: return %returnhash;
5132: }
5133:
5134: sub update_released_required {
5135: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5136: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5137: $cid = $env{'request.course.id'};
5138: $cdom = $env{'course.'.$cid.'.domain'};
5139: $cnum = $env{'course.'.$cid.'.num'};
5140: $chome = $env{'course.'.$cid.'.home'};
5141: }
5142: if ($needsrelease) {
5143: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5144: my $needsupdate;
5145: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5146: $needsupdate = 1;
5147: } else {
5148: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5149: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5150: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5151: $needsupdate = 1;
5152: }
5153: }
5154: if ($needsupdate) {
5155: my %needshash = (
5156: 'internal.releaserequired' => $needsrelease,
5157: );
5158: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5159: if ($putresult eq 'ok') {
5160: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5161: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5162: if (ref($crsinfo{$cid}) eq 'HASH') {
5163: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5164: &courseidput($cdom,\%crsinfo,$chome,'notime');
5165: }
5166: }
5167: }
5168: }
5169: return;
5170: }
5171:
5172: # -------------------------------------------------See if a user is privileged
5173:
5174: sub privileged {
5175: my ($username,$domain,$possdomains,$possroles)=@_;
5176: my $now = time;
5177: my $roles;
5178: if (ref($possroles) eq 'ARRAY') {
5179: $roles = $possroles;
5180: } else {
5181: $roles = ['dc','su'];
5182: }
5183: if (ref($possdomains) eq 'ARRAY') {
5184: my %privileged = &privileged_by_domain($possdomains,$roles);
5185: foreach my $dom (@{$possdomains}) {
5186: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5187: (ref($privileged{$dom}) eq 'HASH')) {
5188: foreach my $role (@{$roles}) {
5189: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5190: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5191: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5192: return 1 unless (($end && $end < $now) ||
5193: ($start && $start > $now));
5194: }
5195: }
5196: }
5197: }
5198: }
5199: } else {
5200: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5201: my $now = time;
5202:
5203: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5204: my ($trole, $tend, $tstart) = split(/_/, $role);
5205: if (grep(/^\Q$trole\E$/,@{$roles})) {
5206: return 1 unless ($tend && $tend < $now)
5207: or ($tstart && $tstart > $now);
5208: }
5209: }
5210: }
5211: return 0;
5212: }
5213:
5214: sub privileged_by_domain {
5215: my ($domains,$roles) = @_;
5216: my %privileged = ();
5217: my $cachetime = 60*60*24;
5218: my $now = time;
5219: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5220: return %privileged;
5221: }
5222: foreach my $dom (@{$domains}) {
5223: next if (ref($privileged{$dom}) eq 'HASH');
5224: my $needroles;
5225: foreach my $role (@{$roles}) {
5226: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5227: if (defined($cached)) {
5228: if (ref($result) eq 'HASH') {
5229: $privileged{$dom}{$role} = $result;
5230: }
5231: } else {
5232: $needroles = 1;
5233: }
5234: }
5235: if ($needroles) {
5236: my %dompersonnel = &get_domain_roles($dom,$roles);
5237: $privileged{$dom} = {};
5238: foreach my $server (keys(%dompersonnel)) {
5239: if (ref($dompersonnel{$server}) eq 'HASH') {
5240: foreach my $item (keys(%{$dompersonnel{$server}})) {
5241: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5242: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5243: next if ($end && $end < $now);
5244: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5245: $dompersonnel{$server}{$item};
5246: }
5247: }
5248: }
5249: if (ref($privileged{$dom}) eq 'HASH') {
5250: foreach my $role (@{$roles}) {
5251: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5252: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5253: } else {
5254: my %hash = ();
5255: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5256: }
5257: }
5258: }
5259: }
5260: }
5261: return %privileged;
5262: }
5263:
5264: # -------------------------------------------------------- Get user privileges
5265:
5266: sub rolesinit {
5267: my ($domain, $username) = @_;
5268: my %userroles = ('user.login.time' => time);
5269: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5270:
5271: # firstaccess and timerinterval are related to timed maps/resources.
5272: # also, blocking can be triggered by an activating timer
5273: # it's saved in the user's %env.
5274: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5275: my %timerinterval = &dump('timerinterval', $domain, $username);
5276: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5277: %timerintchk, %timerintenv);
5278:
5279: foreach my $key (keys(%firstaccess)) {
5280: my ($cid, $rest) = split(/\0/, $key);
5281: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5282: }
5283:
5284: foreach my $key (keys(%timerinterval)) {
5285: my ($cid,$rest) = split(/\0/,$key);
5286: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5287: }
5288:
5289: my %allroles=();
5290: my %allgroups=();
5291:
5292: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5293: my $role = $rolesdump{$area};
5294: $area =~ s/\_\w\w$//;
5295:
5296: my ($trole, $tend, $tstart, $group_privs);
5297:
5298: if ($role =~ /^cr/) {
5299: # Custom role, defined by a user
5300: # e.g., user.role.cr/msu/smith/mynewrole
5301: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5302: $trole = $1;
5303: ($tend, $tstart) = split('_', $2);
5304: } else {
5305: $trole = $role;
5306: }
5307: } elsif ($role =~ m|^gr/|) {
5308: # Role of member in a group, defined within a course/community
5309: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5310: ($trole, $tend, $tstart) = split(/_/, $role);
5311: next if $tstart eq '-1';
5312: ($trole, $group_privs) = split(/\//, $trole);
5313: $group_privs = &unescape($group_privs);
5314: } else {
5315: # Just a normal role, defined in roles.tab
5316: ($trole, $tend, $tstart) = split(/_/,$role);
5317: }
5318:
5319: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5320: $username);
5321: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5322:
5323: # role expired or not available yet?
5324: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5325: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5326:
5327: next if $area eq '' or $trole eq '';
5328:
5329: my $spec = "$trole.$area";
5330: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5331:
5332: if ($trole =~ /^cr\//) {
5333: # Custom role, defined by a user
5334: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5335: } elsif ($trole eq 'gr') {
5336: # Role of a member in a group, defined within a course/community
5337: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5338: next;
5339: } else {
5340: # Normal role, defined in roles.tab
5341: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5342: }
5343:
5344: my $cid = $tdomain.'_'.$trest;
5345: unless ($firstaccchk{$cid}) {
5346: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5347: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5348: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5349: $coursetimerstarts{$cid}{$item};
5350: }
5351: }
5352: $firstaccchk{$cid} = 1;
5353: }
5354: unless ($timerintchk{$cid}) {
5355: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5356: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5357: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5358: $coursetimerintervals{$cid}{$item};
5359: }
5360: }
5361: $timerintchk{$cid} = 1;
5362: }
5363: }
5364:
5365: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5366: \%allroles, \%allgroups);
5367: $env{'user.adv'} = $userroles{'user.adv'};
5368:
5369: return (\%userroles,\%firstaccenv,\%timerintenv);
5370: }
5371:
5372: sub set_arearole {
5373: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5374: unless ($nolog) {
5375: # log the associated role with the area
5376: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5377: }
5378: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5379: }
5380:
5381: sub custom_roleprivs {
5382: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5383: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5384: my $homsvr = &homeserver($rauthor,$rdomain);
5385: if (&hostname($homsvr) ne '') {
5386: my ($rdummy,$roledef)=
5387: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5388: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5389: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5390: if (defined($syspriv)) {
5391: if ($trest =~ /^$match_community$/) {
5392: $syspriv =~ s/bre\&S//;
5393: }
5394: $$allroles{'cm./'}.=':'.$syspriv;
5395: $$allroles{$spec.'./'}.=':'.$syspriv;
5396: }
5397: if ($tdomain ne '') {
5398: if (defined($dompriv)) {
5399: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5400: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5401: }
5402: if (($trest ne '') && (defined($coursepriv))) {
5403: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5404: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5405: }
5406: }
5407: }
5408: }
5409: }
5410:
5411: sub group_roleprivs {
5412: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5413: my $access = 1;
5414: my $now = time;
5415: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5416: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5417: if ($access) {
5418: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5419: $$allgroups{$course}{$group} .=':'.$group_privs;
5420: }
5421: }
5422:
5423: sub standard_roleprivs {
5424: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5425: if (defined($pr{$trole.':s'})) {
5426: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5427: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5428: }
5429: if ($tdomain ne '') {
5430: if (defined($pr{$trole.':d'})) {
5431: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5432: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5433: }
5434: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5435: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5436: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5437: }
5438: }
5439: }
5440:
5441: sub set_userprivs {
5442: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5443: my $author=0;
5444: my $adv=0;
5445: my %grouproles = ();
5446: if (keys(%{$allgroups}) > 0) {
5447: my @groupkeys;
5448: foreach my $role (keys(%{$allroles})) {
5449: push(@groupkeys,$role);
5450: }
5451: if (ref($groups_roles) eq 'HASH') {
5452: foreach my $key (keys(%{$groups_roles})) {
5453: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5454: push(@groupkeys,$key);
5455: }
5456: }
5457: }
5458: if (@groupkeys > 0) {
5459: foreach my $role (@groupkeys) {
5460: my ($trole,$area,$sec,$extendedarea);
5461: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5462: $trole = $1;
5463: $area = $2;
5464: $sec = $3;
5465: $extendedarea = $area.$sec;
5466: if (exists($$allgroups{$area})) {
5467: foreach my $group (keys(%{$$allgroups{$area}})) {
5468: my $spec = $trole.'.'.$extendedarea;
5469: $grouproles{$spec.'.'.$area.'/'.$group} =
5470: $$allgroups{$area}{$group};
5471: }
5472: }
5473: }
5474: }
5475: }
5476: }
5477: foreach my $group (keys(%grouproles)) {
5478: $$allroles{$group} = $grouproles{$group};
5479: }
5480: foreach my $role (keys(%{$allroles})) {
5481: my %thesepriv;
5482: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5483: foreach my $item (split(/:/,$$allroles{$role})) {
5484: if ($item ne '') {
5485: my ($privilege,$restrictions)=split(/&/,$item);
5486: if ($restrictions eq '') {
5487: $thesepriv{$privilege}='F';
5488: } elsif ($thesepriv{$privilege} ne 'F') {
5489: $thesepriv{$privilege}.=$restrictions;
5490: }
5491: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5492: }
5493: }
5494: my $thesestr='';
5495: foreach my $priv (sort(keys(%thesepriv))) {
5496: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5497: }
5498: $userroles->{'user.priv.'.$role} = $thesestr;
5499: }
5500: return ($author,$adv);
5501: }
5502:
5503: sub role_status {
5504: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5505: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5506: my ($one,$two) = split(m{\./},$rolekey,2);
5507: (undef,undef,$$role) = split(/\./,$one,3);
5508: unless (!defined($$role) || $$role eq '') {
5509: $$where = '/'.$two;
5510: $$trolecode=$$role.'.'.$$where;
5511: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5512: $$tstatus='is';
5513: if ($$tstart && $$tstart>$update) {
5514: $$tstatus='future';
5515: if ($$tstart<$now) {
5516: if ($$tstart && $$tstart>$refresh) {
5517: if (($$where ne '') && ($$role ne '')) {
5518: my (%allroles,%allgroups,$group_privs,
5519: %groups_roles,@rolecodes);
5520: my %userroles = (
5521: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5522: );
5523: @rolecodes = ('cm');
5524: my $spec=$$role.'.'.$$where;
5525: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5526: if ($$role =~ /^cr\//) {
5527: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5528: push(@rolecodes,'cr');
5529: } elsif ($$role eq 'gr') {
5530: push(@rolecodes,$$role);
5531: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5532: $env{'user.name'});
5533: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5534: (undef,my $group_privs) = split(/\//,$trole);
5535: $group_privs = &unescape($group_privs);
5536: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5537: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5538: &get_groups_roles($tdomain,$trest,
5539: \%course_roles,\@rolecodes,
5540: \%groups_roles);
5541: } else {
5542: push(@rolecodes,$$role);
5543: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5544: }
5545: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5546: &appenv(\%userroles,\@rolecodes);
5547: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5548: }
5549: }
5550: $$tstatus = 'is';
5551: }
5552: }
5553: if ($$tend) {
5554: if ($$tend<$update) {
5555: $$tstatus='expired';
5556: } elsif ($$tend<$now) {
5557: $$tstatus='will_not';
5558: }
5559: }
5560: }
5561: }
5562: }
5563:
5564: sub get_groups_roles {
5565: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5566: return unless((ref($cdom_courseroles) eq 'HASH') &&
5567: (ref($rolecodes) eq 'ARRAY') &&
5568: (ref($groups_roles) eq 'HASH'));
5569: if (keys(%{$cdom_courseroles}) > 0) {
5570: my ($cnum) = ($rest =~ /^($match_courseid)/);
5571: if ($cdom ne '' && $cnum ne '') {
5572: foreach my $key (keys(%{$cdom_courseroles})) {
5573: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5574: my $crsrole = $1;
5575: my $crssec = $2;
5576: if ($crsrole =~ /^cr/) {
5577: unless (grep(/^cr$/,@{$rolecodes})) {
5578: push(@{$rolecodes},'cr');
5579: }
5580: } else {
5581: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5582: push(@{$rolecodes},$crsrole);
5583: }
5584: }
5585: my $rolekey = "$crsrole./$cdom/$cnum";
5586: if ($crssec ne '') {
5587: $rolekey .= "/$crssec";
5588: }
5589: $rolekey .= './';
5590: $groups_roles->{$rolekey} = $rolecodes;
5591: }
5592: }
5593: }
5594: }
5595: return;
5596: }
5597:
5598: sub delete_env_groupprivs {
5599: my ($where,$courseroles,$possroles) = @_;
5600: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5601: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5602: unless (ref($courseroles->{$udom}) eq 'HASH') {
5603: %{$courseroles->{$udom}} =
5604: &get_my_roles('','','userroles',['active'],
5605: $possroles,[$udom],1);
5606: }
5607: if (ref($courseroles->{$udom}) eq 'HASH') {
5608: foreach my $item (keys(%{$courseroles->{$udom}})) {
5609: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5610: my $area = '/'.$cdom.'/'.$cnum;
5611: my $privkey = "user.priv.$crsrole.$area";
5612: if ($crssec ne '') {
5613: $privkey .= '/'.$crssec;
5614: }
5615: $privkey .= ".$area/$group";
5616: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5617: }
5618: }
5619: return;
5620: }
5621:
5622: sub check_adhoc_privs {
5623: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5624: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5625: my $setprivs;
5626: if ($env{$cckey}) {
5627: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5628: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5629: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5630: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5631: $setprivs = 1;
5632: }
5633: } else {
5634: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5635: $setprivs = 1;
5636: }
5637: return $setprivs;
5638: }
5639:
5640: sub set_adhoc_privileges {
5641: # role can be cc or ca
5642: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5643: my $area = '/'.$dcdom.'/'.$pickedcourse;
5644: my $spec = $role.'.'.$area;
5645: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5646: $env{'user.name'},1);
5647: my %ccrole = ();
5648: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5649: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5650: &appenv(\%userroles,[$role,'cm']);
5651: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5652: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5653: &appenv( {'request.role' => $spec,
5654: 'request.role.domain' => $dcdom,
5655: 'request.course.sec' => ''
5656: }
5657: );
5658: my $tadv=0;
5659: if (&allowed('adv') eq 'F') { $tadv=1; }
5660: &appenv({'request.role.adv' => $tadv});
5661: }
5662: }
5663:
5664: # --------------------------------------------------------------- get interface
5665:
5666: sub get {
5667: my ($namespace,$storearr,$udomain,$uname)=@_;
5668: my $items='';
5669: foreach my $item (@$storearr) {
5670: $items.=&escape($item).'&';
5671: }
5672: $items=~s/\&$//;
5673: if (!$udomain) { $udomain=$env{'user.domain'}; }
5674: if (!$uname) { $uname=$env{'user.name'}; }
5675: my $uhome=&homeserver($uname,$udomain);
5676:
5677: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5678: my @pairs=split(/\&/,$rep);
5679: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5680: return @pairs;
5681: }
5682: my %returnhash=();
5683: my $i=0;
5684: foreach my $item (@$storearr) {
5685: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5686: $i++;
5687: }
5688: return %returnhash;
5689: }
5690:
5691: # --------------------------------------------------------------- del interface
5692:
5693: sub del {
5694: my ($namespace,$storearr,$udomain,$uname)=@_;
5695: my $items='';
5696: foreach my $item (@$storearr) {
5697: $items.=&escape($item).'&';
5698: }
5699:
5700: $items=~s/\&$//;
5701: if (!$udomain) { $udomain=$env{'user.domain'}; }
5702: if (!$uname) { $uname=$env{'user.name'}; }
5703: my $uhome=&homeserver($uname,$udomain);
5704: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5705: }
5706:
5707: # -------------------------------------------------------------- dump interface
5708:
5709: sub unserialize {
5710: my ($rep, $escapedkeys) = @_;
5711:
5712: return {} if $rep =~ /^error/;
5713:
5714: my %returnhash=();
5715: foreach my $item (split(/\&/,$rep)) {
5716: my ($key, $value) = split(/=/, $item, 2);
5717: $key = unescape($key) unless $escapedkeys;
5718: next if $key =~ /^error: 2 /;
5719: $returnhash{$key} = &thaw_unescape($value);
5720: }
5721: return \%returnhash;
5722: }
5723:
5724: # see Lond::dump_with_regexp
5725: # if $escapedkeys hash keys won't get unescaped.
5726: sub dump {
5727: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5728: if (!$udomain) { $udomain=$env{'user.domain'}; }
5729: if (!$uname) { $uname=$env{'user.name'}; }
5730: my $uhome=&homeserver($uname,$udomain);
5731:
5732: if ($regexp) {
5733: $regexp=&escape($regexp);
5734: } else {
5735: $regexp='.';
5736: }
5737: if (grep { $_ eq $uhome } ¤t_machine_ids()) {
5738: # user is hosted on this machine
5739: my $reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain,
5740: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5741: return %{&unserialize($reply, $escapedkeys)};
5742: }
5743: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5744: my @pairs=split(/\&/,$rep);
5745: my %returnhash=();
5746: if (!($rep =~ /^error/ )) {
5747: foreach my $item (@pairs) {
5748: my ($key,$value)=split(/=/,$item,2);
5749: $key = &unescape($key) unless ($escapedkeys);
5750: next if ($key =~ /^error: 2 /);
5751: $returnhash{$key}=&thaw_unescape($value);
5752: }
5753: }
5754: return %returnhash;
5755: }
5756:
5757:
5758: # --------------------------------------------------------- dumpstore interface
5759:
5760: sub dumpstore {
5761: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5762: # same as dump but keys must be escaped. They may contain colon separated
5763: # lists of values that may themself contain colons (e.g. symbs).
5764: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5765: }
5766:
5767: # -------------------------------------------------------------- keys interface
5768:
5769: sub getkeys {
5770: my ($namespace,$udomain,$uname)=@_;
5771: if (!$udomain) { $udomain=$env{'user.domain'}; }
5772: if (!$uname) { $uname=$env{'user.name'}; }
5773: my $uhome=&homeserver($uname,$udomain);
5774: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5775: my @keyarray=();
5776: foreach my $key (split(/\&/,$rep)) {
5777: next if ($key =~ /^error: 2 /);
5778: push(@keyarray,&unescape($key));
5779: }
5780: return @keyarray;
5781: }
5782:
5783: # --------------------------------------------------------------- currentdump
5784: sub currentdump {
5785: my ($courseid,$sdom,$sname)=@_;
5786: $courseid = $env{'request.course.id'} if (! defined($courseid));
5787: $sdom = $env{'user.domain'} if (! defined($sdom));
5788: $sname = $env{'user.name'} if (! defined($sname));
5789: my $uhome = &homeserver($sname,$sdom);
5790: my $rep;
5791:
5792: if (grep { $_ eq $uhome } current_machine_ids()) {
5793: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5794: $courseid)));
5795: } else {
5796: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5797: }
5798:
5799: return if ($rep =~ /^(error:|no_such_host)/);
5800: #
5801: my %returnhash=();
5802: #
5803: if ($rep eq "unknown_cmd") {
5804: # an old lond will not know currentdump
5805: # Do a dump and make it look like a currentdump
5806: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5807: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5808: my %hash = @tmp;
5809: @tmp=();
5810: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5811: } else {
5812: my @pairs=split(/\&/,$rep);
5813: foreach my $pair (@pairs) {
5814: my ($key,$value)=split(/=/,$pair,2);
5815: my ($symb,$param) = split(/:/,$key);
5816: $returnhash{&unescape($symb)}->{&unescape($param)} =
5817: &thaw_unescape($value);
5818: }
5819: }
5820: return %returnhash;
5821: }
5822:
5823: sub convert_dump_to_currentdump{
5824: my %hash = %{shift()};
5825: my %returnhash;
5826: # Code ripped from lond, essentially. The only difference
5827: # here is the unescaping done by lonnet::dump(). Conceivably
5828: # we might run in to problems with parameter names =~ /^v\./
5829: while (my ($key,$value) = each(%hash)) {
5830: my ($v,$symb,$param) = split(/:/,$key);
5831: $symb = &unescape($symb);
5832: $param = &unescape($param);
5833: next if ($v eq 'version' || $symb eq 'keys');
5834: next if (exists($returnhash{$symb}) &&
5835: exists($returnhash{$symb}->{$param}) &&
5836: $returnhash{$symb}->{'v.'.$param} > $v);
5837: $returnhash{$symb}->{$param}=$value;
5838: $returnhash{$symb}->{'v.'.$param}=$v;
5839: }
5840: #
5841: # Remove all of the keys in the hashes which keep track of
5842: # the version of the parameter.
5843: while (my ($symb,$param_hash) = each(%returnhash)) {
5844: # use a foreach because we are going to delete from the hash.
5845: foreach my $key (keys(%$param_hash)) {
5846: delete($param_hash->{$key}) if ($key =~ /^v\./);
5847: }
5848: }
5849: return \%returnhash;
5850: }
5851:
5852: # ------------------------------------------------------ critical inc interface
5853:
5854: sub cinc {
5855: return &inc(@_,'critical');
5856: }
5857:
5858: # --------------------------------------------------------------- inc interface
5859:
5860: sub inc {
5861: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5862: if (!$udomain) { $udomain=$env{'user.domain'}; }
5863: if (!$uname) { $uname=$env{'user.name'}; }
5864: my $uhome=&homeserver($uname,$udomain);
5865: my $items='';
5866: if (! ref($store)) {
5867: # got a single value, so use that instead
5868: $items = &escape($store).'=&';
5869: } elsif (ref($store) eq 'SCALAR') {
5870: $items = &escape($$store).'=&';
5871: } elsif (ref($store) eq 'ARRAY') {
5872: $items = join('=&',map {&escape($_);} @{$store});
5873: } elsif (ref($store) eq 'HASH') {
5874: while (my($key,$value) = each(%{$store})) {
5875: $items.= &escape($key).'='.&escape($value).'&';
5876: }
5877: }
5878: $items=~s/\&$//;
5879: if ($critical) {
5880: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5881: } else {
5882: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5883: }
5884: }
5885:
5886: # --------------------------------------------------------------- put interface
5887:
5888: sub put {
5889: my ($namespace,$storehash,$udomain,$uname)=@_;
5890: if (!$udomain) { $udomain=$env{'user.domain'}; }
5891: if (!$uname) { $uname=$env{'user.name'}; }
5892: my $uhome=&homeserver($uname,$udomain);
5893: my $items='';
5894: foreach my $item (keys(%$storehash)) {
5895: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5896: }
5897: $items=~s/\&$//;
5898: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5899: }
5900:
5901: # ------------------------------------------------------------ newput interface
5902:
5903: sub newput {
5904: my ($namespace,$storehash,$udomain,$uname)=@_;
5905: if (!$udomain) { $udomain=$env{'user.domain'}; }
5906: if (!$uname) { $uname=$env{'user.name'}; }
5907: my $uhome=&homeserver($uname,$udomain);
5908: my $items='';
5909: foreach my $key (keys(%$storehash)) {
5910: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5911: }
5912: $items=~s/\&$//;
5913: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5914: }
5915:
5916: # --------------------------------------------------------- putstore interface
5917:
5918: sub putstore {
5919: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
5920: if (!$udomain) { $udomain=$env{'user.domain'}; }
5921: if (!$uname) { $uname=$env{'user.name'}; }
5922: my $uhome=&homeserver($uname,$udomain);
5923: my $items='';
5924: foreach my $key (keys(%$storehash)) {
5925: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5926: }
5927: $items=~s/\&$//;
5928: my $esc_symb=&escape($symb);
5929: my $esc_v=&escape($version);
5930: my $reply =
5931: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5932: $uhome);
5933: if (($tolog) && ($reply eq 'ok')) {
5934: my $namevalue='';
5935: foreach my $key (keys(%{$storehash})) {
5936: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5937: }
5938: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
5939: '&host='.&escape($perlvar{'lonHostID'}).
5940: '&version='.$esc_v.
5941: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
5942: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
5943: }
5944: if ($reply eq 'unknown_cmd') {
5945: # gfall back to way things use to be done
5946: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5947: $uname);
5948: }
5949: return $reply;
5950: }
5951:
5952: sub old_putstore {
5953: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5954: if (!$udomain) { $udomain=$env{'user.domain'}; }
5955: if (!$uname) { $uname=$env{'user.name'}; }
5956: my $uhome=&homeserver($uname,$udomain);
5957: my %newstorehash;
5958: foreach my $item (keys(%$storehash)) {
5959: my $key = $version.':'.&escape($symb).':'.$item;
5960: $newstorehash{$key} = $storehash->{$item};
5961: }
5962: my $items='';
5963: my %allitems = ();
5964: foreach my $item (keys(%newstorehash)) {
5965: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5966: my $key = $1.':keys:'.$2;
5967: $allitems{$key} .= $3.':';
5968: }
5969: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5970: }
5971: foreach my $item (keys(%allitems)) {
5972: $allitems{$item} =~ s/\:$//;
5973: $items.= $item.'='.$allitems{$item}.'&';
5974: }
5975: $items=~s/\&$//;
5976: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5977: }
5978:
5979: # ------------------------------------------------------ critical put interface
5980:
5981: sub cput {
5982: my ($namespace,$storehash,$udomain,$uname)=@_;
5983: if (!$udomain) { $udomain=$env{'user.domain'}; }
5984: if (!$uname) { $uname=$env{'user.name'}; }
5985: my $uhome=&homeserver($uname,$udomain);
5986: my $items='';
5987: foreach my $item (keys(%$storehash)) {
5988: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5989: }
5990: $items=~s/\&$//;
5991: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5992: }
5993:
5994: # -------------------------------------------------------------- eget interface
5995:
5996: sub eget {
5997: my ($namespace,$storearr,$udomain,$uname)=@_;
5998: my $items='';
5999: foreach my $item (@$storearr) {
6000: $items.=&escape($item).'&';
6001: }
6002: $items=~s/\&$//;
6003: if (!$udomain) { $udomain=$env{'user.domain'}; }
6004: if (!$uname) { $uname=$env{'user.name'}; }
6005: my $uhome=&homeserver($uname,$udomain);
6006: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6007: my @pairs=split(/\&/,$rep);
6008: my %returnhash=();
6009: my $i=0;
6010: foreach my $item (@$storearr) {
6011: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6012: $i++;
6013: }
6014: return %returnhash;
6015: }
6016:
6017: # ------------------------------------------------------------ tmpput interface
6018: sub tmpput {
6019: my ($storehash,$server,$context)=@_;
6020: my $items='';
6021: foreach my $item (keys(%$storehash)) {
6022: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6023: }
6024: $items=~s/\&$//;
6025: if (defined($context)) {
6026: $items .= ':'.&escape($context);
6027: }
6028: return &reply("tmpput:$items",$server);
6029: }
6030:
6031: # ------------------------------------------------------------ tmpget interface
6032: sub tmpget {
6033: my ($token,$server)=@_;
6034: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6035: my $rep=&reply("tmpget:$token",$server);
6036: my %returnhash;
6037: foreach my $item (split(/\&/,$rep)) {
6038: my ($key,$value)=split(/=/,$item);
6039: next if ($key =~ /^error: 2 /);
6040: $returnhash{&unescape($key)}=&thaw_unescape($value);
6041: }
6042: return %returnhash;
6043: }
6044:
6045: # ------------------------------------------------------------ tmpdel interface
6046: sub tmpdel {
6047: my ($token,$server)=@_;
6048: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6049: return &reply("tmpdel:$token",$server);
6050: }
6051:
6052: # ------------------------------------------------------------ get_timebased_id
6053:
6054: sub get_timebased_id {
6055: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6056: $maxtries) = @_;
6057: my ($newid,$error,$dellock);
6058: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6059: return ('','ok','invalid call to get suffix');
6060: }
6061:
6062: # set defaults for any optional args for which values were not supplied
6063: if ($who eq '') {
6064: $who = $env{'user.name'}.':'.$env{'user.domain'};
6065: }
6066: if (!$locktries) {
6067: $locktries = 3;
6068: }
6069: if (!$maxtries) {
6070: $maxtries = 10;
6071: }
6072:
6073: if (($cdom eq '') || ($cnum eq '')) {
6074: if ($env{'request.course.id'}) {
6075: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6076: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6077: }
6078: if (($cdom eq '') || ($cnum eq '')) {
6079: return ('','ok','call to get suffix not in course context');
6080: }
6081: }
6082:
6083: # construct locking item
6084: my $lockhash = {
6085: $prefix."\0".'locked_'.$keyid => $who,
6086: };
6087: my $tries = 0;
6088:
6089: # attempt to get lock on nohist_$namespace file
6090: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6091: while (($gotlock ne 'ok') && $tries <$locktries) {
6092: $tries ++;
6093: sleep 1;
6094: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6095: }
6096:
6097: # attempt to get unique identifier, based on current timestamp
6098: if ($gotlock eq 'ok') {
6099: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6100: my $id = time;
6101: $newid = $id;
6102: if ($idtype eq 'addcode') {
6103: $newid .= &sixnum_code();
6104: }
6105: my $idtries = 0;
6106: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6107: if ($idtype eq 'concat') {
6108: $newid = $id.$idtries;
6109: } elsif ($idtype eq 'addcode') {
6110: $newid = $newid.&sixnum_code();
6111: } else {
6112: $newid ++;
6113: }
6114: $idtries ++;
6115: }
6116: if (!exists($inuse{$prefix."\0".$newid})) {
6117: my %new_item = (
6118: $prefix."\0".$newid => $who,
6119: );
6120: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6121: $cdom,$cnum);
6122: if ($putresult ne 'ok') {
6123: undef($newid);
6124: $error = 'error saving new item: '.$putresult;
6125: }
6126: } else {
6127: undef($newid);
6128: $error = ('error: no unique suffix available for the new item ');
6129: }
6130: # remove lock
6131: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6132: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6133: } else {
6134: $error = "error: could not obtain lockfile\n";
6135: $dellock = 'ok';
6136: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6137: $dellock = 'nolock';
6138: }
6139: }
6140: return ($newid,$dellock,$error);
6141: }
6142:
6143: sub sixnum_code {
6144: my $code;
6145: for (0..6) {
6146: $code .= int( rand(9) );
6147: }
6148: return $code;
6149: }
6150:
6151: # -------------------------------------------------- portfolio access checking
6152:
6153: sub portfolio_access {
6154: my ($requrl) = @_;
6155: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6156: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
6157: if ($result) {
6158: my %setters;
6159: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6160: my ($startblock,$endblock) =
6161: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6162: if ($startblock && $endblock) {
6163: return 'B';
6164: }
6165: } else {
6166: my ($startblock,$endblock) =
6167: &Apache::loncommon::blockcheck(\%setters,'port');
6168: if ($startblock && $endblock) {
6169: return 'B';
6170: }
6171: }
6172: }
6173: if ($result eq 'ok') {
6174: return 'F';
6175: } elsif ($result =~ /^[^:]+:guest_/) {
6176: return 'A';
6177: }
6178: return '';
6179: }
6180:
6181: sub get_portfolio_access {
6182: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
6183:
6184: if (!ref($access_hash)) {
6185: my $current_perms = &get_portfile_permissions($udom,$unum);
6186: my %access_controls = &get_access_controls($current_perms,$group,
6187: $file_name);
6188: $access_hash = $access_controls{$file_name};
6189: }
6190:
6191: my ($public,$guest,@domains,@users,@courses,@groups);
6192: my $now = time;
6193: if (ref($access_hash) eq 'HASH') {
6194: foreach my $key (keys(%{$access_hash})) {
6195: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6196: if ($start > $now) {
6197: next;
6198: }
6199: if ($end && $end<$now) {
6200: next;
6201: }
6202: if ($scope eq 'public') {
6203: $public = $key;
6204: last;
6205: } elsif ($scope eq 'guest') {
6206: $guest = $key;
6207: } elsif ($scope eq 'domains') {
6208: push(@domains,$key);
6209: } elsif ($scope eq 'users') {
6210: push(@users,$key);
6211: } elsif ($scope eq 'course') {
6212: push(@courses,$key);
6213: } elsif ($scope eq 'group') {
6214: push(@groups,$key);
6215: }
6216: }
6217: if ($public) {
6218: return 'ok';
6219: }
6220: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6221: if ($guest) {
6222: return $guest;
6223: }
6224: } else {
6225: if (@domains > 0) {
6226: foreach my $domkey (@domains) {
6227: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6228: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6229: return 'ok';
6230: }
6231: }
6232: }
6233: }
6234: if (@users > 0) {
6235: foreach my $userkey (@users) {
6236: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6237: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6238: if (ref($item) eq 'HASH') {
6239: if (($item->{'uname'} eq $env{'user.name'}) &&
6240: ($item->{'udom'} eq $env{'user.domain'})) {
6241: return 'ok';
6242: }
6243: }
6244: }
6245: }
6246: }
6247: }
6248: my %roleshash;
6249: my @courses_and_groups = @courses;
6250: push(@courses_and_groups,@groups);
6251: if (@courses_and_groups > 0) {
6252: my (%allgroups,%allroles);
6253: my ($start,$end,$role,$sec,$group);
6254: foreach my $envkey (%env) {
6255: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6256: my $cid = $2.'_'.$3;
6257: if ($1 eq 'gr') {
6258: $group = $4;
6259: $allgroups{$cid}{$group} = $env{$envkey};
6260: } else {
6261: if ($4 eq '') {
6262: $sec = 'none';
6263: } else {
6264: $sec = $4;
6265: }
6266: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6267: }
6268: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6269: my $cid = $2.'_'.$3;
6270: if ($4 eq '') {
6271: $sec = 'none';
6272: } else {
6273: $sec = $4;
6274: }
6275: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6276: }
6277: }
6278: if (keys(%allroles) == 0) {
6279: return;
6280: }
6281: foreach my $key (@courses_and_groups) {
6282: my %content = %{$$access_hash{$key}};
6283: my $cnum = $content{'number'};
6284: my $cdom = $content{'domain'};
6285: my $cid = $cdom.'_'.$cnum;
6286: if (!exists($allroles{$cid})) {
6287: next;
6288: }
6289: foreach my $role_id (keys(%{$content{'roles'}})) {
6290: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6291: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6292: my @status = @{$content{'roles'}{$role_id}{'access'}};
6293: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6294: foreach my $role (keys(%{$allroles{$cid}})) {
6295: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6296: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6297: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6298: if (grep/^all$/,@sections) {
6299: return 'ok';
6300: } else {
6301: if (grep/^$sec$/,@sections) {
6302: return 'ok';
6303: }
6304: }
6305: }
6306: }
6307: if (keys(%{$allgroups{$cid}}) == 0) {
6308: if (grep/^none$/,@groups) {
6309: return 'ok';
6310: }
6311: } else {
6312: if (grep/^all$/,@groups) {
6313: return 'ok';
6314: }
6315: foreach my $group (keys(%{$allgroups{$cid}})) {
6316: if (grep/^$group$/,@groups) {
6317: return 'ok';
6318: }
6319: }
6320: }
6321: }
6322: }
6323: }
6324: }
6325: }
6326: if ($guest) {
6327: return $guest;
6328: }
6329: }
6330: }
6331: return;
6332: }
6333:
6334: sub course_group_datechecker {
6335: my ($dates,$now,$status) = @_;
6336: my ($start,$end) = split(/\./,$dates);
6337: if (!$start && !$end) {
6338: return 'ok';
6339: }
6340: if (grep/^active$/,@{$status}) {
6341: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6342: return 'ok';
6343: }
6344: }
6345: if (grep/^previous$/,@{$status}) {
6346: if ($end > $now ) {
6347: return 'ok';
6348: }
6349: }
6350: if (grep/^future$/,@{$status}) {
6351: if ($start > $now) {
6352: return 'ok';
6353: }
6354: }
6355: return;
6356: }
6357:
6358: sub parse_portfolio_url {
6359: my ($url) = @_;
6360:
6361: my ($type,$udom,$unum,$group,$file_name);
6362:
6363: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6364: $type = 1;
6365: $udom = $1;
6366: $unum = $2;
6367: $file_name = $3;
6368: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6369: $type = 2;
6370: $udom = $1;
6371: $unum = $2;
6372: $group = $3;
6373: $file_name = $3.'/'.$4;
6374: }
6375: if (wantarray) {
6376: return ($type,$udom,$unum,$file_name,$group);
6377: }
6378: return $type;
6379: }
6380:
6381: sub is_portfolio_url {
6382: my ($url) = @_;
6383: return scalar(&parse_portfolio_url($url));
6384: }
6385:
6386: sub is_portfolio_file {
6387: my ($file) = @_;
6388: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6389: return 1;
6390: }
6391: return;
6392: }
6393:
6394: sub usertools_access {
6395: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6396: my ($access,%tools);
6397: if ($context eq '') {
6398: $context = 'tools';
6399: }
6400: if ($context eq 'requestcourses') {
6401: %tools = (
6402: official => 1,
6403: unofficial => 1,
6404: community => 1,
6405: textbook => 1,
6406: );
6407: } elsif ($context eq 'requestauthor') {
6408: %tools = (
6409: requestauthor => 1,
6410: );
6411: } else {
6412: %tools = (
6413: aboutme => 1,
6414: blog => 1,
6415: webdav => 1,
6416: portfolio => 1,
6417: );
6418: }
6419: return if (!defined($tools{$tool}));
6420:
6421: if (($udom eq '') || ($uname eq '')) {
6422: $udom = $env{'user.domain'};
6423: $uname = $env{'user.name'};
6424: }
6425:
6426: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6427: if ($action ne 'reload') {
6428: if ($context eq 'requestcourses') {
6429: return $env{'environment.canrequest.'.$tool};
6430: } elsif ($context eq 'requestauthor') {
6431: return $env{'environment.canrequest.author'};
6432: } else {
6433: return $env{'environment.availabletools.'.$tool};
6434: }
6435: }
6436: }
6437:
6438: my ($toolstatus,$inststatus,$envkey);
6439: if ($context eq 'requestauthor') {
6440: $envkey = $context;
6441: } else {
6442: $envkey = $context.'.'.$tool;
6443: }
6444:
6445: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6446: ($action ne 'reload')) {
6447: $toolstatus = $env{'environment.'.$envkey};
6448: $inststatus = $env{'environment.inststatus'};
6449: } else {
6450: if (ref($userenvref) eq 'HASH') {
6451: $toolstatus = $userenvref->{$envkey};
6452: $inststatus = $userenvref->{'inststatus'};
6453: } else {
6454: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6455: $toolstatus = $userenv{$envkey};
6456: $inststatus = $userenv{'inststatus'};
6457: }
6458: }
6459:
6460: if ($toolstatus ne '') {
6461: if ($toolstatus) {
6462: $access = 1;
6463: } else {
6464: $access = 0;
6465: }
6466: return $access;
6467: }
6468:
6469: my ($is_adv,%domdef);
6470: if (ref($is_advref) eq 'HASH') {
6471: $is_adv = $is_advref->{'is_adv'};
6472: } else {
6473: $is_adv = &is_advanced_user($udom,$uname);
6474: }
6475: if (ref($domdefref) eq 'HASH') {
6476: %domdef = %{$domdefref};
6477: } else {
6478: %domdef = &get_domain_defaults($udom);
6479: }
6480: if (ref($domdef{$tool}) eq 'HASH') {
6481: if ($is_adv) {
6482: if ($domdef{$tool}{'_LC_adv'} ne '') {
6483: if ($domdef{$tool}{'_LC_adv'}) {
6484: $access = 1;
6485: } else {
6486: $access = 0;
6487: }
6488: return $access;
6489: }
6490: }
6491: if ($inststatus ne '') {
6492: my ($hasaccess,$hasnoaccess);
6493: foreach my $affiliation (split(/:/,$inststatus)) {
6494: if ($domdef{$tool}{$affiliation} ne '') {
6495: if ($domdef{$tool}{$affiliation}) {
6496: $hasaccess = 1;
6497: } else {
6498: $hasnoaccess = 1;
6499: }
6500: }
6501: }
6502: if ($hasaccess || $hasnoaccess) {
6503: if ($hasaccess) {
6504: $access = 1;
6505: } elsif ($hasnoaccess) {
6506: $access = 0;
6507: }
6508: return $access;
6509: }
6510: } else {
6511: if ($domdef{$tool}{'default'} ne '') {
6512: if ($domdef{$tool}{'default'}) {
6513: $access = 1;
6514: } elsif ($domdef{$tool}{'default'} == 0) {
6515: $access = 0;
6516: }
6517: return $access;
6518: }
6519: }
6520: } else {
6521: if (($context eq 'tools') && ($tool ne 'webdav')) {
6522: $access = 1;
6523: } else {
6524: $access = 0;
6525: }
6526: return $access;
6527: }
6528: }
6529:
6530: sub is_course_owner {
6531: my ($cdom,$cnum,$udom,$uname) = @_;
6532: if (($udom eq '') || ($uname eq '')) {
6533: $udom = $env{'user.domain'};
6534: $uname = $env{'user.name'};
6535: }
6536: unless (($udom eq '') || ($uname eq '')) {
6537: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6538: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6539: return 1;
6540: } else {
6541: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6542: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6543: return 1;
6544: }
6545: }
6546: }
6547: }
6548: return;
6549: }
6550:
6551: sub is_advanced_user {
6552: my ($udom,$uname) = @_;
6553: if ($udom ne '' && $uname ne '') {
6554: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6555: if (wantarray) {
6556: return ($env{'user.adv'},$env{'user.author'});
6557: } else {
6558: return $env{'user.adv'};
6559: }
6560: }
6561: }
6562: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6563: my %allroles;
6564: my ($is_adv,$is_author);
6565: foreach my $role (keys(%roleshash)) {
6566: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6567: my $area = '/'.$tdomain.'/'.$trest;
6568: if ($sec ne '') {
6569: $area .= '/'.$sec;
6570: }
6571: if (($area ne '') && ($trole ne '')) {
6572: my $spec=$trole.'.'.$area;
6573: if ($trole =~ /^cr\//) {
6574: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6575: } elsif ($trole ne 'gr') {
6576: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6577: }
6578: if ($trole eq 'au') {
6579: $is_author = 1;
6580: }
6581: }
6582: }
6583: foreach my $role (keys(%allroles)) {
6584: last if ($is_adv);
6585: foreach my $item (split(/:/,$allroles{$role})) {
6586: if ($item ne '') {
6587: my ($privilege,$restrictions)=split(/&/,$item);
6588: if ($privilege eq 'adv') {
6589: $is_adv = 1;
6590: last;
6591: }
6592: }
6593: }
6594: }
6595: if (wantarray) {
6596: return ($is_adv,$is_author);
6597: }
6598: return $is_adv;
6599: }
6600:
6601: sub check_can_request {
6602: my ($dom,$can_request,$request_domains) = @_;
6603: my $canreq = 0;
6604: my ($types,$typename) = &Apache::loncommon::course_types();
6605: my @options = ('approval','validate','autolimit');
6606: my $optregex = join('|',@options);
6607: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6608: foreach my $type (@{$types}) {
6609: if (&usertools_access($env{'user.name'},
6610: $env{'user.domain'},
6611: $type,undef,'requestcourses')) {
6612: $canreq ++;
6613: if (ref($request_domains) eq 'HASH') {
6614: push(@{$request_domains->{$type}},$env{'user.domain'});
6615: }
6616: if ($dom eq $env{'user.domain'}) {
6617: $can_request->{$type} = 1;
6618: }
6619: }
6620: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6621: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6622: if (@curr > 0) {
6623: foreach my $item (@curr) {
6624: if (ref($request_domains) eq 'HASH') {
6625: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6626: if ($otherdom ne '') {
6627: if (ref($request_domains->{$type}) eq 'ARRAY') {
6628: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6629: push(@{$request_domains->{$type}},$otherdom);
6630: }
6631: } else {
6632: push(@{$request_domains->{$type}},$otherdom);
6633: }
6634: }
6635: }
6636: }
6637: unless($dom eq $env{'user.domain'}) {
6638: $canreq ++;
6639: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6640: $can_request->{$type} = 1;
6641: }
6642: }
6643: }
6644: }
6645: }
6646: }
6647: return $canreq;
6648: }
6649:
6650: # ---------------------------------------------- Custom access rule evaluation
6651:
6652: sub customaccess {
6653: my ($priv,$uri)=@_;
6654: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6655: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6656: $udom = &LONCAPA::clean_domain($udom);
6657: $ucrs = &LONCAPA::clean_username($ucrs);
6658: my $access=0;
6659: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6660: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6661: if ($type eq 'user') {
6662: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6663: my ($tdom,$tuname)=split(m{/},$scope);
6664: if ($tdom) {
6665: if ($tdom ne $env{'user.domain'}) { next; }
6666: }
6667: if ($tuname) {
6668: if ($tuname ne $env{'user.name'}) { next; }
6669: }
6670: $access=($effect eq 'allow');
6671: last;
6672: }
6673: } else {
6674: if ($role) {
6675: if ($role ne $urole) { next; }
6676: }
6677: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6678: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6679: if ($tdom) {
6680: if ($tdom ne $udom) { next; }
6681: }
6682: if ($tcrs) {
6683: if ($tcrs ne $ucrs) { next; }
6684: }
6685: if ($tsec) {
6686: if ($tsec ne $usec) { next; }
6687: }
6688: $access=($effect eq 'allow');
6689: last;
6690: }
6691: if ($realm eq '' && $role eq '') {
6692: $access=($effect eq 'allow');
6693: }
6694: }
6695: }
6696: return $access;
6697: }
6698:
6699: # ------------------------------------------------- Check for a user privilege
6700:
6701: sub allowed {
6702: my ($priv,$uri,$symb,$role)=@_;
6703: my $ver_orguri=$uri;
6704: $uri=&deversion($uri);
6705: my $orguri=$uri;
6706: $uri=&declutter($uri);
6707:
6708: if ($priv eq 'evb') {
6709: # Evade communication block restrictions for specified role in a course
6710: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6711: return $1;
6712: } else {
6713: return;
6714: }
6715: }
6716:
6717: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6718: # Free bre access to adm and meta resources
6719: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6720: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6721: && ($priv eq 'bre')) {
6722: return 'F';
6723: }
6724:
6725: # Free bre access to user's own portfolio contents
6726: my ($space,$domain,$name,@dir)=split('/',$uri);
6727: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6728: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6729: my %setters;
6730: my ($startblock,$endblock) =
6731: &Apache::loncommon::blockcheck(\%setters,'port');
6732: if ($startblock && $endblock) {
6733: return 'B';
6734: } else {
6735: return 'F';
6736: }
6737: }
6738:
6739: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6740: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6741: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6742: if (exists($env{'request.course.id'})) {
6743: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6744: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6745: if (($domain eq $cdom) && ($name eq $cnum)) {
6746: my $courseprivid=$env{'request.course.id'};
6747: $courseprivid=~s/\_/\//;
6748: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6749: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6750: return $1;
6751: } else {
6752: if ($env{'request.course.sec'}) {
6753: $courseprivid.='/'.$env{'request.course.sec'};
6754: }
6755: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6756: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6757: return $2;
6758: }
6759: }
6760: }
6761: }
6762: }
6763:
6764: # Free bre to public access
6765:
6766: if ($priv eq 'bre') {
6767: my $copyright=&metadata($uri,'copyright');
6768: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6769: return 'F';
6770: }
6771: if ($copyright eq 'priv') {
6772: $uri=~/([^\/]+)\/([^\/]+)\//;
6773: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6774: return '';
6775: }
6776: }
6777: if ($copyright eq 'domain') {
6778: $uri=~/([^\/]+)\/([^\/]+)\//;
6779: unless (($env{'user.domain'} eq $1) ||
6780: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6781: return '';
6782: }
6783: }
6784: if ($env{'request.role'}=~ /li\.\//) {
6785: # Library role, so allow browsing of resources in this domain.
6786: return 'F';
6787: }
6788: if ($copyright eq 'custom') {
6789: unless (&customaccess($priv,$uri)) { return ''; }
6790: }
6791: }
6792: # Domain coordinator is trying to create a course
6793: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6794: # uri is the requested domain in this case.
6795: # comparison to 'request.role.domain' shows if the user has selected
6796: # a role of dc for the domain in question.
6797: return 'F' if ($uri eq $env{'request.role.domain'});
6798: }
6799:
6800: my $thisallowed='';
6801: my $statecond=0;
6802: my $courseprivid='';
6803:
6804: my $ownaccess;
6805: # Community Coordinator or Assistant Co-author browsing resource space.
6806: if (($priv eq 'bro') && ($env{'user.author'})) {
6807: if ($uri eq '') {
6808: $ownaccess = 1;
6809: } else {
6810: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6811: my $udom = $env{'user.domain'};
6812: my $uname = $env{'user.name'};
6813: if ($uri =~ m{^\Q$udom\E/?$}) {
6814: $ownaccess = 1;
6815: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6816: unless ($uri =~ m{\.\./}) {
6817: $ownaccess = 1;
6818: }
6819: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6820: my $now = time;
6821: if ($uri =~ m{^([^/]+)/?$}) {
6822: my $adom = $1;
6823: foreach my $key (keys(%env)) {
6824: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6825: my ($start,$end) = split('.',$env{$key});
6826: if (($now >= $start) && (!$end || $end < $now)) {
6827: $ownaccess = 1;
6828: last;
6829: }
6830: }
6831: }
6832: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6833: my $adom = $1;
6834: my $aname = $2;
6835: foreach my $role ('ca','aa') {
6836: if ($env{"user.role.$role./$adom/$aname"}) {
6837: my ($start,$end) =
6838: split('.',$env{"user.role.$role./$adom/$aname"});
6839: if (($now >= $start) && (!$end || $end < $now)) {
6840: $ownaccess = 1;
6841: last;
6842: }
6843: }
6844: }
6845: }
6846: }
6847: }
6848: }
6849: }
6850:
6851: # Course
6852:
6853: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6854: unless (($priv eq 'bro') && (!$ownaccess)) {
6855: $thisallowed.=$1;
6856: }
6857: }
6858:
6859: # Domain
6860:
6861: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6862: =~/\Q$priv\E\&([^\:]*)/) {
6863: unless (($priv eq 'bro') && (!$ownaccess)) {
6864: $thisallowed.=$1;
6865: }
6866: }
6867:
6868: # User who is not author or co-author might still be able to edit
6869: # resource of an author in the domain (e.g., if Domain Coordinator).
6870: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6871: (&allowed('mdc',$env{'request.course.id'}))) {
6872: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6873: $thisallowed.=$1;
6874: }
6875: }
6876:
6877: # Course: uri itself is a course
6878: my $courseuri=$uri;
6879: $courseuri=~s/\_(\d)/\/$1/;
6880: $courseuri=~s/^([^\/])/\/$1/;
6881:
6882: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6883: =~/\Q$priv\E\&([^\:]*)/) {
6884: unless (($priv eq 'bro') && (!$ownaccess)) {
6885: $thisallowed.=$1;
6886: }
6887: }
6888:
6889: # URI is an uploaded document for this course, default permissions don't matter
6890: # not allowing 'edit' access (editupload) to uploaded course docs
6891: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6892: $thisallowed='';
6893: my ($match)=&is_on_map($uri);
6894: if ($match) {
6895: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6896: =~/\Q$priv\E\&([^\:]*)/) {
6897: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6898: if (@blockers > 0) {
6899: $thisallowed = 'B';
6900: } else {
6901: $thisallowed.=$1;
6902: }
6903: }
6904: } else {
6905: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6906: if ($refuri) {
6907: if ($refuri =~ m|^/adm/|) {
6908: $thisallowed='F';
6909: } else {
6910: $refuri=&declutter($refuri);
6911: my ($match) = &is_on_map($refuri);
6912: if ($match) {
6913: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6914: if (@blockers > 0) {
6915: $thisallowed = 'B';
6916: } else {
6917: $thisallowed='F';
6918: }
6919: }
6920: }
6921: }
6922: }
6923: }
6924:
6925: if ($priv eq 'bre'
6926: && $thisallowed ne 'F'
6927: && $thisallowed ne '2'
6928: && &is_portfolio_url($uri)) {
6929: $thisallowed = &portfolio_access($uri);
6930: }
6931:
6932: # Full access at system, domain or course-wide level? Exit.
6933: if ($thisallowed=~/F/) {
6934: return 'F';
6935: }
6936:
6937: # If this is generating or modifying users, exit with special codes
6938:
6939: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6940: if (($priv eq 'cca') || ($priv eq 'caa')) {
6941: my ($audom,$auname)=split('/',$uri);
6942: # no author name given, so this just checks on the general right to make a co-author in this domain
6943: unless ($auname) { return $thisallowed; }
6944: # an author name is given, so we are about to actually make a co-author for a certain account
6945: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6946: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6947: ($audom ne $env{'request.role.domain'}))) { return ''; }
6948: }
6949: return $thisallowed;
6950: }
6951: #
6952: # Gathered so far: system, domain and course wide privileges
6953: #
6954: # Course: See if uri or referer is an individual resource that is part of
6955: # the course
6956:
6957: if ($env{'request.course.id'}) {
6958:
6959: $courseprivid=$env{'request.course.id'};
6960: if ($env{'request.course.sec'}) {
6961: $courseprivid.='/'.$env{'request.course.sec'};
6962: }
6963: $courseprivid=~s/\_/\//;
6964: my $checkreferer=1;
6965: my ($match,$cond)=&is_on_map($uri);
6966: if ($match) {
6967: $statecond=$cond;
6968: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6969: =~/\Q$priv\E\&([^\:]*)/) {
6970: my $value = $1;
6971: if ($priv eq 'bre') {
6972: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6973: if (@blockers > 0) {
6974: $thisallowed = 'B';
6975: } else {
6976: $thisallowed.=$value;
6977: }
6978: } else {
6979: $thisallowed.=$value;
6980: }
6981: $checkreferer=0;
6982: }
6983: }
6984:
6985: if ($checkreferer) {
6986: my $refuri=$env{'httpref.'.$orguri};
6987: unless ($refuri) {
6988: foreach my $key (keys(%env)) {
6989: if ($key=~/^httpref\..*\*/) {
6990: my $pattern=$key;
6991: $pattern=~s/^httpref\.\/res\///;
6992: $pattern=~s/\*/\[\^\/\]\+/g;
6993: $pattern=~s/\//\\\//g;
6994: if ($orguri=~/$pattern/) {
6995: $refuri=$env{$key};
6996: }
6997: }
6998: }
6999: }
7000:
7001: if ($refuri) {
7002: $refuri=&declutter($refuri);
7003: my ($match,$cond)=&is_on_map($refuri);
7004: if ($match) {
7005: my $refstatecond=$cond;
7006: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7007: =~/\Q$priv\E\&([^\:]*)/) {
7008: my $value = $1;
7009: if ($priv eq 'bre') {
7010: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7011: if (@blockers > 0) {
7012: $thisallowed = 'B';
7013: } else {
7014: $thisallowed.=$value;
7015: }
7016: } else {
7017: $thisallowed.=$value;
7018: }
7019: $uri=$refuri;
7020: $statecond=$refstatecond;
7021: }
7022: }
7023: }
7024: }
7025: }
7026:
7027: #
7028: # Gathered now: all privileges that could apply, and condition number
7029: #
7030: #
7031: # Full or no access?
7032: #
7033:
7034: if ($thisallowed=~/F/) {
7035: return 'F';
7036: }
7037:
7038: unless ($thisallowed) {
7039: return '';
7040: }
7041:
7042: # Restrictions exist, deal with them
7043: #
7044: # C:according to course preferences
7045: # R:according to resource settings
7046: # L:unless locked
7047: # X:according to user session state
7048: #
7049:
7050: # Possibly locked functionality, check all courses
7051: # Locks might take effect only after 10 minutes cache expiration for other
7052: # courses, and 2 minutes for current course
7053:
7054: my $envkey;
7055: if ($thisallowed=~/L/) {
7056: foreach $envkey (keys(%env)) {
7057: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7058: my $courseid=$2;
7059: my $roleid=$1.'.'.$2;
7060: $courseid=~s/^\///;
7061: my $expiretime=600;
7062: if ($env{'request.role'} eq $roleid) {
7063: $expiretime=120;
7064: }
7065: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7066: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7067: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7068: &coursedescription($courseid,{'freshen_cache' => 1});
7069: }
7070: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7071: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7072: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7073: &log($env{'user.domain'},$env{'user.name'},
7074: $env{'user.home'},
7075: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7076: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7077: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7078: return '';
7079: }
7080: }
7081: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7082: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7083: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7084: &log($env{'user.domain'},$env{'user.name'},
7085: $env{'user.home'},
7086: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7087: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7088: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7089: return '';
7090: }
7091: }
7092: }
7093: }
7094: }
7095:
7096: #
7097: # Rest of the restrictions depend on selected course
7098: #
7099:
7100: unless ($env{'request.course.id'}) {
7101: if ($thisallowed eq 'A') {
7102: return 'A';
7103: } elsif ($thisallowed eq 'B') {
7104: return 'B';
7105: } else {
7106: return '1';
7107: }
7108: }
7109:
7110: #
7111: # Now user is definitely in a course
7112: #
7113:
7114:
7115: # Course preferences
7116:
7117: if ($thisallowed=~/C/) {
7118: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7119: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7120: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7121: =~/\Q$rolecode\E/) {
7122: if (($priv ne 'pch') && ($priv ne 'plc')) {
7123: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7124: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7125: $env{'request.course.id'});
7126: }
7127: return '';
7128: }
7129:
7130: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7131: =~/\Q$unamedom\E/) {
7132: if (($priv ne 'pch') && ($priv ne 'plc')) {
7133: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7134: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7135: $env{'request.course.id'});
7136: }
7137: return '';
7138: }
7139: }
7140:
7141: # Resource preferences
7142:
7143: if ($thisallowed=~/R/) {
7144: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7145: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7146: if (($priv ne 'pch') && ($priv ne 'plc')) {
7147: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7148: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7149: }
7150: return '';
7151: }
7152: }
7153:
7154: # Restricted by state or randomout?
7155:
7156: if ($thisallowed=~/X/) {
7157: if ($env{'acc.randomout'}) {
7158: if (!$symb) { $symb=&symbread($uri,1); }
7159: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7160: return '';
7161: }
7162: }
7163: if (&condval($statecond)) {
7164: return '2';
7165: } else {
7166: return '';
7167: }
7168: }
7169:
7170: if ($thisallowed eq 'A') {
7171: return 'A';
7172: } elsif ($thisallowed eq 'B') {
7173: return 'B';
7174: }
7175: return 'F';
7176: }
7177:
7178: # ------------------------------------------- Check construction space access
7179:
7180: sub constructaccess {
7181: my ($url,$setpriv)=@_;
7182:
7183: # We do not allow editing of previous versions of files
7184: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7185:
7186: # Get username and domain from URL
7187: my ($ownername,$ownerdomain,$ownerhome);
7188:
7189: ($ownerdomain,$ownername) =
7190: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
7191:
7192: # The URL does not really point to any authorspace, forget it
7193: unless (($ownername) && ($ownerdomain)) { return ''; }
7194:
7195: # Now we need to see if the user has access to the authorspace of
7196: # $ownername at $ownerdomain
7197:
7198: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7199: # Real author for this?
7200: $ownerhome = $env{'user.home'};
7201: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7202: return ($ownername,$ownerdomain,$ownerhome);
7203: }
7204: } else {
7205: # Co-author for this?
7206: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7207: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7208: $ownerhome = &homeserver($ownername,$ownerdomain);
7209: return ($ownername,$ownerdomain,$ownerhome);
7210: }
7211: }
7212:
7213: # We don't have any access right now. If we are not possibly going to do anything about this,
7214: # we might as well leave
7215: unless ($setpriv) { return ''; }
7216:
7217: # Backdoor access?
7218: my $allowed=&allowed('eco',$ownerdomain);
7219: # Nope
7220: unless ($allowed) { return ''; }
7221: # Looks like we may have access, but could be locked by the owner of the construction space
7222: if ($allowed eq 'U') {
7223: my %blocked=&get('environment',['domcoord.author'],
7224: $ownerdomain,$ownername);
7225: # Is blocked by owner
7226: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7227: }
7228: if (($allowed eq 'F') || ($allowed eq 'U')) {
7229: # Grant temporary access
7230: my $then=$env{'user.login.time'};
7231: my $update=$env{'user.update.time'};
7232: if (!$update) { $update = $then; }
7233: my $refresh=$env{'user.refresh.time'};
7234: if (!$refresh) { $refresh = $update; }
7235: my $now = time;
7236: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7237: $now,'ca','constructaccess');
7238: $ownerhome = &homeserver($ownername,$ownerdomain);
7239: return($ownername,$ownerdomain,$ownerhome);
7240: }
7241: # No business here
7242: return '';
7243: }
7244:
7245: sub get_comm_blocks {
7246: my ($cdom,$cnum) = @_;
7247: if ($cdom eq '' || $cnum eq '') {
7248: return unless ($env{'request.course.id'});
7249: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7250: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7251: }
7252: my %commblocks;
7253: my $hashid=$cdom.'_'.$cnum;
7254: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7255: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7256: %commblocks = %{$blocksref};
7257: } else {
7258: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7259: my $cachetime = 600;
7260: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7261: }
7262: return %commblocks;
7263: }
7264:
7265: sub has_comm_blocking {
7266: my ($priv,$symb,$uri,$blocks) = @_;
7267: return unless ($env{'request.course.id'});
7268: return unless ($priv eq 'bre');
7269: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7270: my %commblocks;
7271: if (ref($blocks) eq 'HASH') {
7272: %commblocks = %{$blocks};
7273: } else {
7274: %commblocks = &get_comm_blocks();
7275: }
7276: return unless (keys(%commblocks) > 0);
7277: if (!$symb) { $symb=&symbread($uri,1); }
7278: my ($map,$resid,undef)=&decode_symb($symb);
7279: my %tocheck = (
7280: maps => $map,
7281: resources => $symb,
7282: );
7283: my @blockers;
7284: my $now = time;
7285: my $navmap = Apache::lonnavmaps::navmap->new();
7286: foreach my $block (keys(%commblocks)) {
7287: if ($block =~ /^(\d+)____(\d+)$/) {
7288: my ($start,$end) = ($1,$2);
7289: if ($start <= $now && $end >= $now) {
7290: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7291: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7292: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7293: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
7294: unless (grep(/^\Q$block\E$/,@blockers)) {
7295: push(@blockers,$block);
7296: }
7297: }
7298: }
7299: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7300: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
7301: unless (grep(/^\Q$block\E$/,@blockers)) {
7302: push(@blockers,$block);
7303: }
7304: }
7305: }
7306: }
7307: }
7308: }
7309: } elsif ($block =~ /^firstaccess____(.+)$/) {
7310: my $item = $1;
7311: my @to_test;
7312: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7313: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7314: my $check_interval;
7315: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
7316: my @interval;
7317: my $type = 'map';
7318: if ($item eq 'course') {
7319: $type = 'course';
7320: @interval=&EXT("resource.0.interval");
7321: } else {
7322: if ($item =~ /___\d+___/) {
7323: $type = 'resource';
7324: @interval=&EXT("resource.0.interval",$item);
7325: if (ref($navmap)) {
7326: my $res = $navmap->getBySymb($item);
7327: push(@to_test,$res);
7328: }
7329: } else {
7330: my $mapsymb = &symbread($item,1);
7331: if ($mapsymb) {
7332: if (ref($navmap)) {
7333: my $mapres = $navmap->getBySymb($mapsymb);
7334: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7335: foreach my $res (@to_test) {
7336: my $symb = $res->symb();
7337: next if ($symb eq $mapsymb);
7338: if ($symb ne '') {
7339: @interval=&EXT("resource.0.interval",$symb);
7340: last;
7341: }
7342: }
7343: }
7344: }
7345: }
7346: }
7347: if ($interval[0] =~ /\d+/) {
7348: my $first_access;
7349: if ($type eq 'resource') {
7350: $first_access=&get_first_access($interval[1],$item);
7351: } elsif ($type eq 'map') {
7352: $first_access=&get_first_access($interval[1],undef,$item);
7353: } else {
7354: $first_access=&get_first_access($interval[1]);
7355: }
7356: if ($first_access) {
7357: my $timesup = $first_access+$interval[0];
7358: if ($timesup > $now) {
7359: foreach my $res (@to_test) {
7360: if ($res->is_problem()) {
7361: if ($res->completable()) {
7362: unless (grep(/^\Q$block\E$/,@blockers)) {
7363: push(@blockers,$block);
7364: }
7365: last;
7366: }
7367: }
7368: }
7369: }
7370: }
7371: }
7372: }
7373: }
7374: }
7375: }
7376: }
7377: return @blockers;
7378: }
7379:
7380: sub check_docs_block {
7381: my ($docsblock,$tocheck) =@_;
7382: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7383: return;
7384: }
7385: if (ref($docsblock->{'maps'}) eq 'HASH') {
7386: if ($tocheck->{'maps'}) {
7387: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7388: return 1;
7389: }
7390: }
7391: }
7392: if (ref($docsblock->{'resources'}) eq 'HASH') {
7393: if ($tocheck->{'resources'}) {
7394: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7395: return 1;
7396: }
7397: }
7398: }
7399: return;
7400: }
7401:
7402: #
7403: # Removes the versino from a URI and
7404: # splits it in to its filename and path to the filename.
7405: # Seems like File::Basename could have done this more clearly.
7406: # Parameters:
7407: # $uri - input URI
7408: # Returns:
7409: # Two element list consisting of
7410: # $pathname - the URI up to and excluding the trailing /
7411: # $filename - The part of the URI following the last /
7412: # NOTE:
7413: # Another realization of this is simply:
7414: # use File::Basename;
7415: # ...
7416: # $uri = shift;
7417: # $filename = basename($uri);
7418: # $path = dirname($uri);
7419: # return ($filename, $path);
7420: #
7421: # The implementation below is probably faster however.
7422: #
7423: sub split_uri_for_cond {
7424: my $uri=&deversion(&declutter(shift));
7425: my @uriparts=split(/\//,$uri);
7426: my $filename=pop(@uriparts);
7427: my $pathname=join('/',@uriparts);
7428: return ($pathname,$filename);
7429: }
7430: # --------------------------------------------------- Is a resource on the map?
7431:
7432: sub is_on_map {
7433: my ($pathname,$filename) = &split_uri_for_cond(shift);
7434: #Trying to find the conditional for the file
7435: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7436: /\&\Q$filename\E\:([\d\|]+)\&/);
7437: if ($match) {
7438: return (1,$1);
7439: } else {
7440: return (0,0);
7441: }
7442: }
7443:
7444: # --------------------------------------------------------- Get symb from alias
7445:
7446: sub get_symb_from_alias {
7447: my $symb=shift;
7448: my ($map,$resid,$url)=&decode_symb($symb);
7449: # Already is a symb
7450: if ($url) { return $symb; }
7451: # Must be an alias
7452: my $aliassymb='';
7453: my %bighash;
7454: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7455: &GDBM_READER(),0640)) {
7456: my $rid=$bighash{'mapalias_'.$symb};
7457: if ($rid) {
7458: my ($mapid,$resid)=split(/\./,$rid);
7459: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7460: $resid,$bighash{'src_'.$rid});
7461: }
7462: untie %bighash;
7463: }
7464: return $aliassymb;
7465: }
7466:
7467: # ----------------------------------------------------------------- Define Role
7468:
7469: sub definerole {
7470: if (allowed('mcr','/')) {
7471: my ($rolename,$sysrole,$domrole,$courole)=@_;
7472: foreach my $role (split(':',$sysrole)) {
7473: my ($crole,$cqual)=split(/\&/,$role);
7474: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7475: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7476: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7477: return "refused:s:$crole&$cqual";
7478: }
7479: }
7480: }
7481: foreach my $role (split(':',$domrole)) {
7482: my ($crole,$cqual)=split(/\&/,$role);
7483: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7484: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7485: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7486: return "refused:d:$crole&$cqual";
7487: }
7488: }
7489: }
7490: foreach my $role (split(':',$courole)) {
7491: my ($crole,$cqual)=split(/\&/,$role);
7492: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7493: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7494: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7495: return "refused:c:$crole&$cqual";
7496: }
7497: }
7498: }
7499: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7500: "$env{'user.domain'}:$env{'user.name'}:".
7501: "rolesdef_$rolename=".
7502: escape($sysrole.'_'.$domrole.'_'.$courole);
7503: return reply($command,$env{'user.home'});
7504: } else {
7505: return 'refused';
7506: }
7507: }
7508:
7509: # ---------------- Make a metadata query against the network of library servers
7510:
7511: sub metadata_query {
7512: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7513: my %rhash;
7514: my %libserv = &all_library();
7515: my @server_list = (defined($server_array) ? @$server_array
7516: : keys(%libserv) );
7517: for my $server (@server_list) {
7518: my $domains = '';
7519: if (ref($domains_hash) eq 'HASH') {
7520: $domains = $domains_hash->{$server};
7521: }
7522: unless ($custom or $customshow) {
7523: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7524: $rhash{$server}=$reply;
7525: }
7526: else {
7527: my $reply=&reply("querysend:".&escape($query).':'.
7528: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7529: $server);
7530: $rhash{$server}=$reply;
7531: }
7532: }
7533: return \%rhash;
7534: }
7535:
7536: # ----------------------------------------- Send log queries and wait for reply
7537:
7538: sub log_query {
7539: my ($uname,$udom,$query,%filters)=@_;
7540: my $uhome=&homeserver($uname,$udom);
7541: if ($uhome eq 'no_host') { return 'error: no_host'; }
7542: my $uhost=&hostname($uhome);
7543: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7544: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7545: $uhome);
7546: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7547: return get_query_reply($queryid);
7548: }
7549:
7550: # -------------------------- Update MySQL table for portfolio file
7551:
7552: sub update_portfolio_table {
7553: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7554: if ($group ne '') {
7555: $file_name =~s /^\Q$group\E//;
7556: }
7557: my $homeserver = &homeserver($uname,$udom);
7558: my $queryid=
7559: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7560: ':'.&escape($file_name).':'.$action,$homeserver);
7561: my $reply = &get_query_reply($queryid);
7562: return $reply;
7563: }
7564:
7565: # -------------------------- Update MySQL allusers table
7566:
7567: sub update_allusers_table {
7568: my ($uname,$udom,$names) = @_;
7569: my $homeserver = &homeserver($uname,$udom);
7570: my $queryid=
7571: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7572: 'lastname='.&escape($names->{'lastname'}).'%%'.
7573: 'firstname='.&escape($names->{'firstname'}).'%%'.
7574: 'middlename='.&escape($names->{'middlename'}).'%%'.
7575: 'generation='.&escape($names->{'generation'}).'%%'.
7576: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7577: 'id='.&escape($names->{'id'}),$homeserver);
7578: return;
7579: }
7580:
7581: # ------- Request retrieval of institutional classlists for course(s)
7582:
7583: sub fetch_enrollment_query {
7584: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7585: my $homeserver;
7586: my $maxtries = 1;
7587: if ($context eq 'automated') {
7588: $homeserver = $perlvar{'lonHostID'};
7589: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7590: } else {
7591: $homeserver = &homeserver($cnum,$dom);
7592: }
7593: my $host=&hostname($homeserver);
7594: my $cmd = '';
7595: foreach my $affiliate (keys(%{$affiliatesref})) {
7596: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7597: }
7598: $cmd =~ s/%%$//;
7599: $cmd = &escape($cmd);
7600: my $query = 'fetchenrollment';
7601: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7602: unless ($queryid=~/^\Q$host\E\_/) {
7603: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7604: return 'error: '.$queryid;
7605: }
7606: my $reply = &get_query_reply($queryid);
7607: my $tries = 1;
7608: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7609: $reply = &get_query_reply($queryid);
7610: $tries ++;
7611: }
7612: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7613: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7614: } else {
7615: my @responses = split(/:/,$reply);
7616: if ($homeserver eq $perlvar{'lonHostID'}) {
7617: foreach my $line (@responses) {
7618: my ($key,$value) = split(/=/,$line,2);
7619: $$replyref{$key} = $value;
7620: }
7621: } else {
7622: my $pathname = LONCAPA::tempdir();
7623: foreach my $line (@responses) {
7624: my ($key,$value) = split(/=/,$line);
7625: $$replyref{$key} = $value;
7626: if ($value > 0) {
7627: foreach my $item (@{$$affiliatesref{$key}}) {
7628: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7629: my $destname = $pathname.'/'.$filename;
7630: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7631: if ($xml_classlist =~ /^error/) {
7632: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7633: } else {
7634: if ( open(FILE,">$destname") ) {
7635: print FILE &unescape($xml_classlist);
7636: close(FILE);
7637: } else {
7638: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7639: }
7640: }
7641: }
7642: }
7643: }
7644: }
7645: return 'ok';
7646: }
7647: return 'error';
7648: }
7649:
7650: sub get_query_reply {
7651: my $queryid=shift;
7652: my $replyfile=LONCAPA::tempdir().$queryid;
7653: my $reply='';
7654: for (1..100) {
7655: sleep 2;
7656: if (-e $replyfile.'.end') {
7657: if (open(my $fh,$replyfile)) {
7658: $reply = join('',<$fh>);
7659: close($fh);
7660: } else { return 'error: reply_file_error'; }
7661: return &unescape($reply);
7662: }
7663: }
7664: return 'timeout:'.$queryid;
7665: }
7666:
7667: sub courselog_query {
7668: #
7669: # possible filters:
7670: # url: url or symb
7671: # username
7672: # domain
7673: # action: view, submit, grade
7674: # start: timestamp
7675: # end: timestamp
7676: #
7677: my (%filters)=@_;
7678: unless ($env{'request.course.id'}) { return 'no_course'; }
7679: if ($filters{'url'}) {
7680: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7681: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7682: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7683: }
7684: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7685: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7686: return &log_query($cname,$cdom,'courselog',%filters);
7687: }
7688:
7689: sub userlog_query {
7690: #
7691: # possible filters:
7692: # action: log check role
7693: # start: timestamp
7694: # end: timestamp
7695: #
7696: my ($uname,$udom,%filters)=@_;
7697: return &log_query($uname,$udom,'userlog',%filters);
7698: }
7699:
7700: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7701:
7702: sub auto_run {
7703: my ($cnum,$cdom) = @_;
7704: my $response = 0;
7705: my $settings;
7706: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7707: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7708: $settings = $domconfig{'autoenroll'};
7709: if ($settings->{'run'} eq '1') {
7710: $response = 1;
7711: }
7712: } else {
7713: my $homeserver;
7714: if (&is_course($cdom,$cnum)) {
7715: $homeserver = &homeserver($cnum,$cdom);
7716: } else {
7717: $homeserver = &domain($cdom,'primary');
7718: }
7719: if ($homeserver ne 'no_host') {
7720: $response = &reply('autorun:'.$cdom,$homeserver);
7721: }
7722: }
7723: return $response;
7724: }
7725:
7726: sub auto_get_sections {
7727: my ($cnum,$cdom,$inst_coursecode) = @_;
7728: my $homeserver;
7729: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7730: $homeserver = &homeserver($cnum,$cdom);
7731: }
7732: if (!defined($homeserver)) {
7733: if ($cdom =~ /^$match_domain$/) {
7734: $homeserver = &domain($cdom,'primary');
7735: }
7736: }
7737: my @secs;
7738: if (defined($homeserver)) {
7739: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7740: unless ($response eq 'refused') {
7741: @secs = split(/:/,$response);
7742: }
7743: }
7744: return @secs;
7745: }
7746:
7747: sub auto_new_course {
7748: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7749: my $homeserver = &homeserver($cnum,$cdom);
7750: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7751: return $response;
7752: }
7753:
7754: sub auto_validate_courseID {
7755: my ($cnum,$cdom,$inst_course_id) = @_;
7756: my $homeserver = &homeserver($cnum,$cdom);
7757: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7758: return $response;
7759: }
7760:
7761: sub auto_validate_instcode {
7762: my ($cnum,$cdom,$instcode,$owner) = @_;
7763: my ($homeserver,$response);
7764: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7765: $homeserver = &homeserver($cnum,$cdom);
7766: }
7767: if (!defined($homeserver)) {
7768: if ($cdom =~ /^$match_domain$/) {
7769: $homeserver = &domain($cdom,'primary');
7770: }
7771: }
7772: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7773: &escape($instcode).':'.&escape($owner),$homeserver));
7774: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7775: return ($outcome,$description,$defaultcredits);
7776: }
7777:
7778: sub auto_create_password {
7779: my ($cnum,$cdom,$authparam,$udom) = @_;
7780: my ($homeserver,$response);
7781: my $create_passwd = 0;
7782: my $authchk = '';
7783: if ($udom =~ /^$match_domain$/) {
7784: $homeserver = &domain($udom,'primary');
7785: }
7786: if ($homeserver eq '') {
7787: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7788: $homeserver = &homeserver($cnum,$cdom);
7789: }
7790: }
7791: if ($homeserver eq '') {
7792: $authchk = 'nodomain';
7793: } else {
7794: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7795: if ($response eq 'refused') {
7796: $authchk = 'refused';
7797: } else {
7798: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7799: }
7800: }
7801: return ($authparam,$create_passwd,$authchk);
7802: }
7803:
7804: sub auto_photo_permission {
7805: my ($cnum,$cdom,$students) = @_;
7806: my $homeserver = &homeserver($cnum,$cdom);
7807: my ($outcome,$perm_reqd,$conditions) =
7808: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7809: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7810: return (undef,undef);
7811: }
7812: return ($outcome,$perm_reqd,$conditions);
7813: }
7814:
7815: sub auto_checkphotos {
7816: my ($uname,$udom,$pid) = @_;
7817: my $homeserver = &homeserver($uname,$udom);
7818: my ($result,$resulttype);
7819: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7820: &escape($uname).':'.&escape($pid),
7821: $homeserver));
7822: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7823: return (undef,undef);
7824: }
7825: if ($outcome) {
7826: ($result,$resulttype) = split(/:/,$outcome);
7827: }
7828: return ($result,$resulttype);
7829: }
7830:
7831: sub auto_photochoice {
7832: my ($cnum,$cdom) = @_;
7833: my $homeserver = &homeserver($cnum,$cdom);
7834: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7835: &escape($cdom),
7836: $homeserver)));
7837: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7838: return (undef,undef);
7839: }
7840: return ($update,$comment);
7841: }
7842:
7843: sub auto_photoupdate {
7844: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7845: my $homeserver = &homeserver($cnum,$dom);
7846: my $host=&hostname($homeserver);
7847: my $cmd = '';
7848: my $maxtries = 1;
7849: foreach my $affiliate (keys(%{$affiliatesref})) {
7850: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7851: }
7852: $cmd =~ s/%%$//;
7853: $cmd = &escape($cmd);
7854: my $query = 'institutionalphotos';
7855: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7856: unless ($queryid=~/^\Q$host\E\_/) {
7857: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7858: return 'error: '.$queryid;
7859: }
7860: my $reply = &get_query_reply($queryid);
7861: my $tries = 1;
7862: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7863: $reply = &get_query_reply($queryid);
7864: $tries ++;
7865: }
7866: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7867: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7868: } else {
7869: my @responses = split(/:/,$reply);
7870: my $outcome = shift(@responses);
7871: foreach my $item (@responses) {
7872: my ($key,$value) = split(/=/,$item);
7873: $$photo{$key} = $value;
7874: }
7875: return $outcome;
7876: }
7877: return 'error';
7878: }
7879:
7880: sub auto_instcode_format {
7881: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7882: $cat_order) = @_;
7883: my $courses = '';
7884: my @homeservers;
7885: if ($caller eq 'global') {
7886: my %servers = &get_servers($codedom,'library');
7887: foreach my $tryserver (keys(%servers)) {
7888: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7889: push(@homeservers,$tryserver);
7890: }
7891: }
7892: } elsif ($caller eq 'requests') {
7893: if ($codedom =~ /^$match_domain$/) {
7894: my $chome = &domain($codedom,'primary');
7895: unless ($chome eq 'no_host') {
7896: push(@homeservers,$chome);
7897: }
7898: }
7899: } else {
7900: push(@homeservers,&homeserver($caller,$codedom));
7901: }
7902: foreach my $code (keys(%{$instcodes})) {
7903: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7904: }
7905: chop($courses);
7906: my $ok_response = 0;
7907: my $response;
7908: while (@homeservers > 0 && $ok_response == 0) {
7909: my $server = shift(@homeservers);
7910: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7911: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7912: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7913: split(/:/,$response);
7914: %{$codes} = (%{$codes},&str2hash($codes_str));
7915: push(@{$codetitles},&str2array($codetitles_str));
7916: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7917: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7918: $ok_response = 1;
7919: }
7920: }
7921: if ($ok_response) {
7922: return 'ok';
7923: } else {
7924: return $response;
7925: }
7926: }
7927:
7928: sub auto_instcode_defaults {
7929: my ($domain,$returnhash,$code_order) = @_;
7930: my @homeservers;
7931:
7932: my %servers = &get_servers($domain,'library');
7933: foreach my $tryserver (keys(%servers)) {
7934: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7935: push(@homeservers,$tryserver);
7936: }
7937: }
7938:
7939: my $response;
7940: foreach my $server (@homeservers) {
7941: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7942: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7943:
7944: foreach my $pair (split(/\&/,$response)) {
7945: my ($name,$value)=split(/\=/,$pair);
7946: if ($name eq 'code_order') {
7947: @{$code_order} = split(/\&/,&unescape($value));
7948: } else {
7949: $returnhash->{&unescape($name)}=&unescape($value);
7950: }
7951: }
7952: return 'ok';
7953: }
7954:
7955: return $response;
7956: }
7957:
7958: sub auto_possible_instcodes {
7959: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7960: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7961: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7962: return;
7963: }
7964: my (@homeservers,$uhome);
7965: if (defined(&domain($domain,'primary'))) {
7966: $uhome=&domain($domain,'primary');
7967: push(@homeservers,&domain($domain,'primary'));
7968: } else {
7969: my %servers = &get_servers($domain,'library');
7970: foreach my $tryserver (keys(%servers)) {
7971: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7972: push(@homeservers,$tryserver);
7973: }
7974: }
7975: }
7976: my $response;
7977: foreach my $server (@homeservers) {
7978: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7979: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7980: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7981: split(':',$response);
7982: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7983: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7984: foreach my $item (split('&',$cat_title)) {
7985: my ($name,$value)=split('=',$item);
7986: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7987: }
7988: foreach my $item (split('&',$cat_order)) {
7989: my ($name,$value)=split('=',$item);
7990: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7991: }
7992: return 'ok';
7993: }
7994: return $response;
7995: }
7996:
7997: sub auto_courserequest_checks {
7998: my ($dom) = @_;
7999: my ($homeserver,%validations);
8000: if ($dom =~ /^$match_domain$/) {
8001: $homeserver = &domain($dom,'primary');
8002: }
8003: unless ($homeserver eq 'no_host') {
8004: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8005: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8006: my @items = split(/&/,$response);
8007: foreach my $item (@items) {
8008: my ($key,$value) = split('=',$item);
8009: $validations{&unescape($key)} = &thaw_unescape($value);
8010: }
8011: }
8012: }
8013: return %validations;
8014: }
8015:
8016: sub auto_courserequest_validation {
8017: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8018: my ($homeserver,$response);
8019: if ($dom =~ /^$match_domain$/) {
8020: $homeserver = &domain($dom,'primary');
8021: }
8022: unless ($homeserver eq 'no_host') {
8023: my $customdata;
8024: if (ref($custominfo) eq 'HASH') {
8025: $customdata = &freeze_escape($custominfo);
8026: }
8027: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8028: ':'.&escape($crstype).':'.&escape($inststatuslist).
8029: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8030: $customdata,$homeserver));
8031: }
8032: return $response;
8033: }
8034:
8035: sub auto_validate_class_sec {
8036: my ($cdom,$cnum,$owners,$inst_class) = @_;
8037: my $homeserver = &homeserver($cnum,$cdom);
8038: my $ownerlist;
8039: if (ref($owners) eq 'ARRAY') {
8040: $ownerlist = join(',',@{$owners});
8041: } else {
8042: $ownerlist = $owners;
8043: }
8044: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8045: &escape($ownerlist).':'.$cdom,$homeserver);
8046: return $response;
8047: }
8048:
8049: sub auto_crsreq_update {
8050: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8051: $code,$accessstart,$accessend,$inbound) = @_;
8052: my ($homeserver,%crsreqresponse);
8053: if ($cdom =~ /^$match_domain$/) {
8054: $homeserver = &domain($cdom,'primary');
8055: }
8056: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8057: my $info;
8058: if (ref($inbound) eq 'HASH') {
8059: $info = &freeze_escape($inbound);
8060: }
8061: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8062: ':'.&escape($action).':'.&escape($ownername).':'.
8063: &escape($ownerdomain).':'.&escape($fullname).':'.
8064: &escape($title).':'.&escape($code).':'.
8065: &escape($accessstart).':'.&escape($accessend).':'.$info,$homeserver);
8066: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8067: my @items = split(/&/,$response);
8068: foreach my $item (@items) {
8069: my ($key,$value) = split('=',$item);
8070: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8071: }
8072: }
8073: }
8074: return \%crsreqresponse;
8075: }
8076:
8077: # ------------------------------------------------------- Course Group routines
8078:
8079: sub get_coursegroups {
8080: my ($cdom,$cnum,$group,$namespace) = @_;
8081: return(&dump($namespace,$cdom,$cnum,$group));
8082: }
8083:
8084: sub modify_coursegroup {
8085: my ($cdom,$cnum,$groupsettings) = @_;
8086: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8087: }
8088:
8089: sub toggle_coursegroup_status {
8090: my ($cdom,$cnum,$group,$action) = @_;
8091: my ($from_namespace,$to_namespace);
8092: if ($action eq 'delete') {
8093: $from_namespace = 'coursegroups';
8094: $to_namespace = 'deleted_groups';
8095: } else {
8096: $from_namespace = 'deleted_groups';
8097: $to_namespace = 'coursegroups';
8098: }
8099: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8100: if (my $tmp = &error(%curr_group)) {
8101: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8102: return ('read error',$tmp);
8103: } else {
8104: my %savedsettings = %curr_group;
8105: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8106: my $deloutcome;
8107: if ($result eq 'ok') {
8108: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8109: } else {
8110: return ('write error',$result);
8111: }
8112: if ($deloutcome eq 'ok') {
8113: return 'ok';
8114: } else {
8115: return ('delete error',$deloutcome);
8116: }
8117: }
8118: }
8119:
8120: sub modify_group_roles {
8121: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8122: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8123: my $role = 'gr/'.&escape($userprivs);
8124: my ($uname,$udom) = split(/:/,$user);
8125: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8126: if ($result eq 'ok') {
8127: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8128: }
8129: return $result;
8130: }
8131:
8132: sub modify_coursegroup_membership {
8133: my ($cdom,$cnum,$membership) = @_;
8134: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8135: return $result;
8136: }
8137:
8138: sub get_active_groups {
8139: my ($udom,$uname,$cdom,$cnum) = @_;
8140: my $now = time;
8141: my %groups = ();
8142: foreach my $key (keys(%env)) {
8143: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8144: my ($start,$end) = split(/\./,$env{$key});
8145: if (($end!=0) && ($end<$now)) { next; }
8146: if (($start!=0) && ($start>$now)) { next; }
8147: if ($1 eq $cdom && $2 eq $cnum) {
8148: $groups{$3} = $env{$key} ;
8149: }
8150: }
8151: }
8152: return %groups;
8153: }
8154:
8155: sub get_group_membership {
8156: my ($cdom,$cnum,$group) = @_;
8157: return(&dump('groupmembership',$cdom,$cnum,$group));
8158: }
8159:
8160: sub get_users_groups {
8161: my ($udom,$uname,$courseid) = @_;
8162: my @usersgroups;
8163: my $cachetime=1800;
8164:
8165: my $hashid="$udom:$uname:$courseid";
8166: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8167: if (defined($cached)) {
8168: @usersgroups = split(/:/,$grouplist);
8169: } else {
8170: $grouplist = '';
8171: my $courseurl = &courseid_to_courseurl($courseid);
8172: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8173: my $access_end = $env{'course.'.$courseid.
8174: '.default_enrollment_end_date'};
8175: my $now = time;
8176: foreach my $key (keys(%roleshash)) {
8177: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8178: my $group = $1;
8179: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8180: my $start = $2;
8181: my $end = $1;
8182: if ($start == -1) { next; } # deleted from group
8183: if (($start!=0) && ($start>$now)) { next; }
8184: if (($end!=0) && ($end<$now)) {
8185: if ($access_end && $access_end < $now) {
8186: if ($access_end - $end < 86400) {
8187: push(@usersgroups,$group);
8188: }
8189: }
8190: next;
8191: }
8192: push(@usersgroups,$group);
8193: }
8194: }
8195: }
8196: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8197: $grouplist = join(':',@usersgroups);
8198: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8199: }
8200: return @usersgroups;
8201: }
8202:
8203: sub devalidate_getgroups_cache {
8204: my ($udom,$uname,$cdom,$cnum)=@_;
8205: my $courseid = $cdom.'_'.$cnum;
8206:
8207: my $hashid="$udom:$uname:$courseid";
8208: &devalidate_cache_new('getgroups',$hashid);
8209: }
8210:
8211: # ------------------------------------------------------------------ Plain Text
8212:
8213: sub plaintext {
8214: my ($short,$type,$cid,$forcedefault) = @_;
8215: if ($short =~ m{^cr/}) {
8216: return (split('/',$short))[-1];
8217: }
8218: if (!defined($cid)) {
8219: $cid = $env{'request.course.id'};
8220: }
8221: my %rolenames = (
8222: Course => 'std',
8223: Community => 'alt1',
8224: );
8225: if ($cid ne '') {
8226: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8227: unless ($forcedefault) {
8228: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8229: &Apache::lonlocal::mt_escape(\$roletext);
8230: return &Apache::lonlocal::mt($roletext);
8231: }
8232: }
8233: }
8234: if ((defined($type)) && (defined($rolenames{$type})) &&
8235: (defined($rolenames{$type})) &&
8236: (defined($prp{$short}{$rolenames{$type}}))) {
8237: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8238: } elsif ($cid ne '') {
8239: my $crstype = $env{'course.'.$cid.'.type'};
8240: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8241: (defined($prp{$short}{$rolenames{$crstype}}))) {
8242: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8243: }
8244: }
8245: return &Apache::lonlocal::mt($prp{$short}{'std'});
8246: }
8247:
8248: # ----------------------------------------------------------------- Assign Role
8249:
8250: sub assignrole {
8251: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8252: $context)=@_;
8253: my $mrole;
8254: if ($role =~ /^cr\//) {
8255: my $cwosec=$url;
8256: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8257: unless (&allowed('ccr',$cwosec)) {
8258: my $refused = 1;
8259: if ($context eq 'requestcourses') {
8260: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8261: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8262: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8263: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8264: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8265: if ($crsenv{'internal.courseowner'} eq
8266: $env{'user.name'}.':'.$env{'user.domain'}) {
8267: $refused = '';
8268: }
8269: }
8270: }
8271: }
8272: }
8273: if ($refused) {
8274: &logthis('Refused custom assignrole: '.
8275: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8276: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8277: return 'refused';
8278: }
8279: }
8280: $mrole='cr';
8281: } elsif ($role =~ /^gr\//) {
8282: my $cwogrp=$url;
8283: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8284: unless (&allowed('mdg',$cwogrp)) {
8285: &logthis('Refused group assignrole: '.
8286: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8287: $env{'user.name'}.' at '.$env{'user.domain'});
8288: return 'refused';
8289: }
8290: $mrole='gr';
8291: } else {
8292: my $cwosec=$url;
8293: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8294: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8295: my $refused;
8296: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8297: if (!(&allowed('c'.$role,$url))) {
8298: $refused = 1;
8299: }
8300: } else {
8301: $refused = 1;
8302: }
8303: if ($refused) {
8304: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8305: if (!$selfenroll && $context eq 'course') {
8306: my %crsenv;
8307: if ($role eq 'cc' || $role eq 'co') {
8308: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8309: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8310: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8311: if ($crsenv{'internal.courseowner'} eq
8312: $env{'user.name'}.':'.$env{'user.domain'}) {
8313: $refused = '';
8314: }
8315: }
8316: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8317: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8318: if ($crsenv{'internal.courseowner'} eq
8319: $env{'user.name'}.':'.$env{'user.domain'}) {
8320: $refused = '';
8321: }
8322: }
8323: }
8324: }
8325: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8326: $refused = '';
8327: } elsif ($context eq 'requestcourses') {
8328: my @possroles = ('st','ta','ep','in','cc','co');
8329: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8330: my $wrongcc;
8331: if ($cnum =~ /^$match_community$/) {
8332: $wrongcc = 1 if ($role eq 'cc');
8333: } else {
8334: $wrongcc = 1 if ($role eq 'co');
8335: }
8336: unless ($wrongcc) {
8337: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8338: if ($crsenv{'internal.courseowner'} eq
8339: $env{'user.name'}.':'.$env{'user.domain'}) {
8340: $refused = '';
8341: }
8342: }
8343: }
8344: } elsif ($context eq 'requestauthor') {
8345: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8346: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8347: if ($env{'environment.requestauthor'} eq 'automatic') {
8348: $refused = '';
8349: } else {
8350: my %domdefaults = &get_domain_defaults($udom);
8351: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8352: my $checkbystatus;
8353: if ($env{'user.adv'}) {
8354: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8355: if ($disposition eq 'automatic') {
8356: $refused = '';
8357: } elsif ($disposition eq '') {
8358: $checkbystatus = 1;
8359: }
8360: } else {
8361: $checkbystatus = 1;
8362: }
8363: if ($checkbystatus) {
8364: if ($env{'environment.inststatus'}) {
8365: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8366: foreach my $type (@inststatuses) {
8367: if (($type ne '') &&
8368: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8369: $refused = '';
8370: }
8371: }
8372: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8373: $refused = '';
8374: }
8375: }
8376: }
8377: }
8378: }
8379: }
8380: if ($refused) {
8381: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8382: ' '.$role.' '.$end.' '.$start.' by '.
8383: $env{'user.name'}.' at '.$env{'user.domain'});
8384: return 'refused';
8385: }
8386: }
8387: } elsif ($role eq 'au') {
8388: if ($url ne '/'.$udom.'/') {
8389: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8390: ' to assign author role for '.$uname.':'.$udom.
8391: ' in domain: '.$url.' refused (wrong domain).');
8392: return 'refused';
8393: }
8394: }
8395: $mrole=$role;
8396: }
8397: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8398: "$udom:$uname:$url".'_'."$mrole=$role";
8399: if ($end) { $command.='_'.$end; }
8400: if ($start) {
8401: if ($end) {
8402: $command.='_'.$start;
8403: } else {
8404: $command.='_0_'.$start;
8405: }
8406: }
8407: my $origstart = $start;
8408: my $origend = $end;
8409: my $delflag;
8410: # actually delete
8411: if ($deleteflag) {
8412: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8413: # modify command to delete the role
8414: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8415: "$udom:$uname:$url".'_'."$mrole";
8416: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8417: # set start and finish to negative values for userrolelog
8418: $start=-1;
8419: $end=-1;
8420: $delflag = 1;
8421: }
8422: }
8423: # send command
8424: my $answer=&reply($command,&homeserver($uname,$udom));
8425: # log new user role if status is ok
8426: if ($answer eq 'ok') {
8427: &userrolelog($role,$uname,$udom,$url,$start,$end);
8428: if (($role eq 'cc') || ($role eq 'in') ||
8429: ($role eq 'ep') || ($role eq 'ad') ||
8430: ($role eq 'ta') || ($role eq 'st') ||
8431: ($role=~/^cr/) || ($role eq 'gr') ||
8432: ($role eq 'co')) {
8433: # for course roles, perform group memberships changes triggered by role change.
8434: unless ($role =~ /^gr/) {
8435: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8436: $origstart,$selfenroll,$context);
8437: }
8438: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8439: $selfenroll,$context);
8440: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8441: ($role eq 'au') || ($role eq 'dc')) {
8442: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8443: $context);
8444: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8445: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8446: $context);
8447: }
8448: if ($role eq 'cc') {
8449: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8450: }
8451: }
8452: return $answer;
8453: }
8454:
8455: sub autoupdate_coowners {
8456: my ($url,$end,$start,$uname,$udom) = @_;
8457: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8458: if (($cdom ne '') && ($cnum ne '')) {
8459: my $now = time;
8460: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8461: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8462: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8463: my $instcode = $coursehash{'internal.coursecode'};
8464: if ($instcode ne '') {
8465: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8466: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8467: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8468: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8469: if ($result eq 'valid') {
8470: if ($coursehash{'internal.co-owners'}) {
8471: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8472: push(@newcoowners,$coowner);
8473: }
8474: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8475: push(@newcoowners,$uname.':'.$udom);
8476: }
8477: @newcoowners = sort(@newcoowners);
8478: } else {
8479: push(@newcoowners,$uname.':'.$udom);
8480: }
8481: } else {
8482: if ($coursehash{'internal.co-owners'}) {
8483: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8484: unless ($coowner eq $uname.':'.$udom) {
8485: push(@newcoowners,$coowner);
8486: }
8487: }
8488: unless (@newcoowners > 0) {
8489: $delcoowners = 1;
8490: $coowners = '';
8491: }
8492: }
8493: }
8494: if (@newcoowners || $delcoowners) {
8495: &store_coowners($cdom,$cnum,$coursehash{'home'},
8496: $delcoowners,@newcoowners);
8497: }
8498: }
8499: }
8500: }
8501: }
8502: }
8503: }
8504:
8505: sub store_coowners {
8506: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8507: my $cid = $cdom.'_'.$cnum;
8508: my ($coowners,$delresult,$putresult);
8509: if (@newcoowners) {
8510: $coowners = join(',',@newcoowners);
8511: my %coownershash = (
8512: 'internal.co-owners' => $coowners,
8513: );
8514: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8515: if ($putresult eq 'ok') {
8516: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8517: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8518: }
8519: }
8520: }
8521: if ($delcoowners) {
8522: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8523: if ($delresult eq 'ok') {
8524: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8525: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8526: }
8527: }
8528: }
8529: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8530: my %crsinfo =
8531: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8532: if (ref($crsinfo{$cid}) eq 'HASH') {
8533: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8534: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8535: }
8536: }
8537: }
8538:
8539: # -------------------------------------------------- Modify user authentication
8540: # Overrides without validation
8541:
8542: sub modifyuserauth {
8543: my ($udom,$uname,$umode,$upass)=@_;
8544: my $uhome=&homeserver($uname,$udom);
8545: unless (&allowed('mau',$udom)) { return 'refused'; }
8546: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8547: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8548: ' in domain '.$env{'request.role.domain'});
8549: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8550: &escape($upass),$uhome);
8551: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8552: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8553: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8554: &log($udom,,$uname,$uhome,
8555: 'Authentication changed by '.$env{'user.domain'}.', '.
8556: $env{'user.name'}.', '.$umode.
8557: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8558: unless ($reply eq 'ok') {
8559: &logthis('Authentication mode error: '.$reply);
8560: return 'error: '.$reply;
8561: }
8562: return 'ok';
8563: }
8564:
8565: # --------------------------------------------------------------- Modify a user
8566:
8567: sub modifyuser {
8568: my ($udom, $uname, $uid,
8569: $umode, $upass, $first,
8570: $middle, $last, $gene,
8571: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8572: $udom= &LONCAPA::clean_domain($udom);
8573: $uname=&LONCAPA::clean_username($uname);
8574: my $showcandelete = 'none';
8575: if (ref($candelete) eq 'ARRAY') {
8576: if (@{$candelete} > 0) {
8577: $showcandelete = join(', ',@{$candelete});
8578: }
8579: }
8580: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8581: $umode.', '.$first.', '.$middle.', '.
8582: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8583: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8584: ' desiredhome not specified').
8585: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8586: ' in domain '.$env{'request.role.domain'});
8587: my $uhome=&homeserver($uname,$udom,'true');
8588: my $newuser;
8589: if ($uhome eq 'no_host') {
8590: $newuser = 1;
8591: }
8592: # ----------------------------------------------------------------- Create User
8593: if (($uhome eq 'no_host') &&
8594: (($umode && $upass) || ($umode eq 'localauth'))) {
8595: my $unhome='';
8596: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8597: $unhome = $desiredhome;
8598: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8599: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8600: } else { # load balancing routine for determining $unhome
8601: my $loadm=10000000;
8602: my %servers = &get_servers($udom,'library');
8603: foreach my $tryserver (keys(%servers)) {
8604: my $answer=reply('load',$tryserver);
8605: if (($answer=~/\d+/) && ($answer<$loadm)) {
8606: $loadm=$answer;
8607: $unhome=$tryserver;
8608: }
8609: }
8610: }
8611: if (($unhome eq '') || ($unhome eq 'no_host')) {
8612: return 'error: unable to find a home server for '.$uname.
8613: ' in domain '.$udom;
8614: }
8615: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8616: &escape($upass),$unhome);
8617: unless ($reply eq 'ok') {
8618: return 'error: '.$reply;
8619: }
8620: $uhome=&homeserver($uname,$udom,'true');
8621: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8622: return 'error: unable verify users home machine.';
8623: }
8624: } # End of creation of new user
8625: # ---------------------------------------------------------------------- Add ID
8626: if ($uid) {
8627: $uid=~tr/A-Z/a-z/;
8628: my %uidhash=&idrget($udom,$uname);
8629: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8630: && (!$forceid)) {
8631: unless ($uid eq $uidhash{$uname}) {
8632: return 'error: user id "'.$uid.'" does not match '.
8633: 'current user id "'.$uidhash{$uname}.'".';
8634: }
8635: } else {
8636: &idput($udom,($uname => $uid));
8637: }
8638: }
8639: # -------------------------------------------------------------- Add names, etc
8640: my @tmp=&get('environment',
8641: ['firstname','middlename','lastname','generation','id',
8642: 'permanentemail','inststatus'],
8643: $udom,$uname);
8644: my (%names,%oldnames);
8645: if ($tmp[0] =~ m/^error:.*/) {
8646: %names=();
8647: } else {
8648: %names = @tmp;
8649: %oldnames = %names;
8650: }
8651: #
8652: # If name, email and/or uid are blank (e.g., because an uploaded file
8653: # of users did not contain them), do not overwrite existing values
8654: # unless field is in $candelete array ref.
8655: #
8656:
8657: my @fields = ('firstname','middlename','lastname','generation',
8658: 'permanentemail','id');
8659: my %newvalues;
8660: if (ref($candelete) eq 'ARRAY') {
8661: foreach my $field (@fields) {
8662: if (grep(/^\Q$field\E$/,@{$candelete})) {
8663: if ($field eq 'firstname') {
8664: $names{$field} = $first;
8665: } elsif ($field eq 'middlename') {
8666: $names{$field} = $middle;
8667: } elsif ($field eq 'lastname') {
8668: $names{$field} = $last;
8669: } elsif ($field eq 'generation') {
8670: $names{$field} = $gene;
8671: } elsif ($field eq 'permanentemail') {
8672: $names{$field} = $email;
8673: } elsif ($field eq 'id') {
8674: $names{$field} = $uid;
8675: }
8676: }
8677: }
8678: }
8679: if ($first) { $names{'firstname'} = $first; }
8680: if (defined($middle)) { $names{'middlename'} = $middle; }
8681: if ($last) { $names{'lastname'} = $last; }
8682: if (defined($gene)) { $names{'generation'} = $gene; }
8683: if ($email) {
8684: $email=~s/[^\w\@\.\-\,]//gs;
8685: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8686: }
8687: if ($uid) { $names{'id'} = $uid; }
8688: if (defined($inststatus)) {
8689: $names{'inststatus'} = '';
8690: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8691: if (ref($usertypes) eq 'HASH') {
8692: my @okstatuses;
8693: foreach my $item (split(/:/,$inststatus)) {
8694: if (defined($usertypes->{$item})) {
8695: push(@okstatuses,$item);
8696: }
8697: }
8698: if (@okstatuses) {
8699: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8700: }
8701: }
8702: }
8703: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8704: $umode.', '.$first.', '.$middle.', '.
8705: $last.', '.$gene.', '.$email.', '.$inststatus;
8706: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8707: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8708: } else {
8709: $logmsg .= ' during self creation';
8710: }
8711: my $changed;
8712: if ($newuser) {
8713: $changed = 1;
8714: } else {
8715: foreach my $field (@fields) {
8716: if ($names{$field} ne $oldnames{$field}) {
8717: $changed = 1;
8718: last;
8719: }
8720: }
8721: }
8722: unless ($changed) {
8723: $logmsg = 'No changes in user information needed for: '.$logmsg;
8724: &logthis($logmsg);
8725: return 'ok';
8726: }
8727: my $reply = &put('environment', \%names, $udom,$uname);
8728: if ($reply ne 'ok') {
8729: return 'error: '.$reply;
8730: }
8731: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8732: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8733: }
8734: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8735: &devalidate_cache_new('namescache',$uname.':'.$udom);
8736: $logmsg = 'Success modifying user '.$logmsg;
8737: &logthis($logmsg);
8738: return 'ok';
8739: }
8740:
8741: # -------------------------------------------------------------- Modify student
8742:
8743: sub modifystudent {
8744: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8745: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8746: $selfenroll,$context,$inststatus,$credits)=@_;
8747: if (!$cid) {
8748: unless ($cid=$env{'request.course.id'}) {
8749: return 'not_in_class';
8750: }
8751: }
8752: # --------------------------------------------------------------- Make the user
8753: my $reply=&modifyuser
8754: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8755: $desiredhome,$email,$inststatus);
8756: unless ($reply eq 'ok') { return $reply; }
8757: # This will cause &modify_student_enrollment to get the uid from the
8758: # student's environment
8759: $uid = undef if (!$forceid);
8760: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8761: $gene,$usec,$end,$start,$type,$locktype,
8762: $cid,$selfenroll,$context,$credits);
8763: return $reply;
8764: }
8765:
8766: sub modify_student_enrollment {
8767: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8768: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8769: my ($cdom,$cnum,$chome);
8770: if (!$cid) {
8771: unless ($cid=$env{'request.course.id'}) {
8772: return 'not_in_class';
8773: }
8774: $cdom=$env{'course.'.$cid.'.domain'};
8775: $cnum=$env{'course.'.$cid.'.num'};
8776: } else {
8777: ($cdom,$cnum)=split(/_/,$cid);
8778: }
8779: $chome=$env{'course.'.$cid.'.home'};
8780: if (!$chome) {
8781: $chome=&homeserver($cnum,$cdom);
8782: }
8783: if (!$chome) { return 'unknown_course'; }
8784: # Make sure the user exists
8785: my $uhome=&homeserver($uname,$udom);
8786: if (($uhome eq '') || ($uhome eq 'no_host')) {
8787: return 'error: no such user';
8788: }
8789: # Get student data if we were not given enough information
8790: if (!defined($first) || $first eq '' ||
8791: !defined($last) || $last eq '' ||
8792: !defined($uid) || $uid eq '' ||
8793: !defined($middle) || $middle eq '' ||
8794: !defined($gene) || $gene eq '') {
8795: # They did not supply us with enough data to enroll the student, so
8796: # we need to pick up more information.
8797: my %tmp = &get('environment',
8798: ['firstname','middlename','lastname', 'generation','id']
8799: ,$udom,$uname);
8800:
8801: #foreach my $key (keys(%tmp)) {
8802: # &logthis("key $key = ".$tmp{$key});
8803: #}
8804: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8805: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8806: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8807: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8808: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8809: }
8810: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8811: my $user = "$uname:$udom";
8812: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8813: my $reply=cput('classlist',
8814: {$user =>
8815: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8816: $cdom,$cnum);
8817: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8818: &devalidate_getsection_cache($udom,$uname,$cid);
8819: } else {
8820: return 'error: '.$reply;
8821: }
8822: # Add student role to user
8823: my $uurl='/'.$cid;
8824: $uurl=~s/\_/\//g;
8825: if ($usec) {
8826: $uurl.='/'.$usec;
8827: }
8828: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8829: $selfenroll,$context);
8830: if ($result ne 'ok') {
8831: if ($old_entry{$user} ne '') {
8832: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8833: } else {
8834: $reply = &del('classlist',[$user],$cdom,$cnum);
8835: }
8836: }
8837: return $result;
8838: }
8839:
8840: sub format_name {
8841: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8842: my $name;
8843: if ($first ne 'lastname') {
8844: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8845: } else {
8846: if ($lastname=~/\S/) {
8847: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8848: $name=~s/\s+,/,/;
8849: } else {
8850: $name.= $firstname.' '.$middlename.' '.$generation;
8851: }
8852: }
8853: $name=~s/^\s+//;
8854: $name=~s/\s+$//;
8855: $name=~s/\s+/ /g;
8856: return $name;
8857: }
8858:
8859: # ------------------------------------------------- Write to course preferences
8860:
8861: sub writecoursepref {
8862: my ($courseid,%prefs)=@_;
8863: $courseid=~s/^\///;
8864: $courseid=~s/\_/\//g;
8865: my ($cdomain,$cnum)=split(/\//,$courseid);
8866: my $chome=homeserver($cnum,$cdomain);
8867: if (($chome eq '') || ($chome eq 'no_host')) {
8868: return 'error: no such course';
8869: }
8870: my $cstring='';
8871: foreach my $pref (keys(%prefs)) {
8872: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8873: }
8874: $cstring=~s/\&$//;
8875: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8876: }
8877:
8878: # ---------------------------------------------------------- Make/modify course
8879:
8880: sub createcourse {
8881: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8882: $course_owner,$crstype,$cnum,$context,$category)=@_;
8883: $url=&declutter($url);
8884: my $cid='';
8885: if ($context eq 'requestcourses') {
8886: my $can_create = 0;
8887: my ($ownername,$ownerdom) = split(':',$course_owner);
8888: if ($udom eq $ownerdom) {
8889: if (&usertools_access($ownername,$ownerdom,$category,undef,
8890: $context)) {
8891: $can_create = 1;
8892: }
8893: } else {
8894: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8895: $category);
8896: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8897: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8898: if (@curr > 0) {
8899: my @options = qw(approval validate autolimit);
8900: my $optregex = join('|',@options);
8901: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8902: $can_create = 1;
8903: }
8904: }
8905: }
8906: }
8907: if ($can_create) {
8908: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8909: unless (&allowed('ccc',$udom)) {
8910: return 'refused';
8911: }
8912: }
8913: } else {
8914: return 'refused';
8915: }
8916: } elsif (!&allowed('ccc',$udom)) {
8917: return 'refused';
8918: }
8919: # --------------------------------------------------------------- Get Unique ID
8920: my $uname;
8921: if ($cnum =~ /^$match_courseid$/) {
8922: my $chome=&homeserver($cnum,$udom,'true');
8923: if (($chome eq '') || ($chome eq 'no_host')) {
8924: $uname = $cnum;
8925: } else {
8926: $uname = &generate_coursenum($udom,$crstype);
8927: }
8928: } else {
8929: $uname = &generate_coursenum($udom,$crstype);
8930: }
8931: return $uname if ($uname =~ /^error/);
8932: # -------------------------------------------------- Check supplied server name
8933: if (!defined($course_server)) {
8934: if (defined(&domain($udom,'primary'))) {
8935: $course_server = &domain($udom,'primary');
8936: } else {
8937: $course_server = $env{'user.home'};
8938: }
8939: }
8940: my %host_servers =
8941: &Apache::lonnet::get_servers($udom,'library');
8942: unless ($host_servers{$course_server}) {
8943: return 'error: invalid home server for course: '.$course_server;
8944: }
8945: # ------------------------------------------------------------- Make the course
8946: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8947: $course_server);
8948: unless ($reply eq 'ok') { return 'error: '.$reply; }
8949: my $uhome=&homeserver($uname,$udom,'true');
8950: if (($uhome eq '') || ($uhome eq 'no_host')) {
8951: return 'error: no such course';
8952: }
8953: # ----------------------------------------------------------------- Course made
8954: # log existence
8955: my $now = time;
8956: my $newcourse = {
8957: $udom.'_'.$uname => {
8958: description => $description,
8959: inst_code => $inst_code,
8960: owner => $course_owner,
8961: type => $crstype,
8962: creator => $env{'user.name'}.':'.
8963: $env{'user.domain'},
8964: created => $now,
8965: context => $context,
8966: },
8967: };
8968: &courseidput($udom,$newcourse,$uhome,'notime');
8969: # set toplevel url
8970: my $topurl=$url;
8971: unless ($nonstandard) {
8972: # ------------------------------------------ For standard courses, make top url
8973: my $mapurl=&clutter($url);
8974: if ($mapurl eq '/res/') { $mapurl=''; }
8975: $env{'form.initmap'}=(<<ENDINITMAP);
8976: <map>
8977: <resource id="1" type="start"></resource>
8978: <resource id="2" src="$mapurl"></resource>
8979: <resource id="3" type="finish"></resource>
8980: <link index="1" from="1" to="2"></link>
8981: <link index="2" from="2" to="3"></link>
8982: </map>
8983: ENDINITMAP
8984: $topurl=&declutter(
8985: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8986: );
8987: }
8988: # ----------------------------------------------------------- Write preferences
8989: &writecoursepref($udom.'_'.$uname,
8990: ('description' => $description,
8991: 'url' => $topurl,
8992: 'internal.creator' => $env{'user.name'}.':'.
8993: $env{'user.domain'},
8994: 'internal.created' => $now,
8995: 'internal.creationcontext' => $context)
8996: );
8997: return '/'.$udom.'/'.$uname;
8998: }
8999:
9000: # ------------------------------------------------------------------- Create ID
9001: sub generate_coursenum {
9002: my ($udom,$crstype) = @_;
9003: my $domdesc = &domain($udom);
9004: return 'error: invalid domain' if ($domdesc eq '');
9005: my $first;
9006: if ($crstype eq 'Community') {
9007: $first = '0';
9008: } else {
9009: $first = int(1+rand(9));
9010: }
9011: my $uname=$first.
9012: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9013: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9014: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9015: # ----------------------------------------------- Make sure that does not exist
9016: my $uhome=&homeserver($uname,$udom,'true');
9017: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9018: if ($crstype eq 'Community') {
9019: $first = '0';
9020: } else {
9021: $first = int(1+rand(9));
9022: }
9023: $uname=$first.
9024: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9025: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9026: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9027: $uhome=&homeserver($uname,$udom,'true');
9028: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9029: return 'error: unable to generate unique course-ID';
9030: }
9031: }
9032: return $uname;
9033: }
9034:
9035: sub is_course {
9036: my ($cdom, $cnum) = scalar(@_) == 1 ?
9037: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9038:
9039: return unless $cdom and $cnum;
9040:
9041: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9042: '.');
9043:
9044: return unless(exists($courses{$cdom.'_'.$cnum}));
9045: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9046: }
9047:
9048: sub store_userdata {
9049: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9050: my $result;
9051: if ($datakey ne '') {
9052: if (ref($storehash) eq 'HASH') {
9053: if ($udom eq '' || $uname eq '') {
9054: $udom = $env{'user.domain'};
9055: $uname = $env{'user.name'};
9056: }
9057: my $uhome=&homeserver($uname,$udom);
9058: if (($uhome eq '') || ($uhome eq 'no_host')) {
9059: $result = 'error: no_host';
9060: } else {
9061: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
9062: $storehash->{'host'} = $perlvar{'lonHostID'};
9063:
9064: my $namevalue='';
9065: foreach my $key (keys(%{$storehash})) {
9066: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
9067: }
9068: $namevalue=~s/\&$//;
9069: unless ($namespace eq 'courserequests') {
9070: $datakey = &escape($datakey);
9071: }
9072: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
9073: $namevalue,$uhome);
9074: }
9075: } else {
9076: $result = 'error: data to store was not a hash reference';
9077: }
9078: } else {
9079: $result= 'error: invalid requestkey';
9080: }
9081: return $result;
9082: }
9083:
9084: # ---------------------------------------------------------- Assign Custom Role
9085:
9086: sub assigncustomrole {
9087: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9088: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9089: $end,$start,$deleteflag,$selfenroll,$context);
9090: }
9091:
9092: # ----------------------------------------------------------------- Revoke Role
9093:
9094: sub revokerole {
9095: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9096: my $now=time;
9097: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9098: }
9099:
9100: # ---------------------------------------------------------- Revoke Custom Role
9101:
9102: sub revokecustomrole {
9103: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9104: my $now=time;
9105: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9106: $deleteflag,$selfenroll,$context);
9107: }
9108:
9109: # ------------------------------------------------------------ Disk usage
9110: sub diskusage {
9111: my ($udom,$uname,$directorypath,$getpropath)=@_;
9112: $directorypath =~ s/\/$//;
9113: my $listing=&reply('du2:'.&escape($directorypath).':'
9114: .&escape($getpropath).':'.&escape($uname).':'
9115: .&escape($udom),homeserver($uname,$udom));
9116: if ($listing eq 'unknown_cmd') {
9117: if ($getpropath) {
9118: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9119: }
9120: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9121: }
9122: return $listing;
9123: }
9124:
9125: sub is_locked {
9126: my ($file_name, $domain, $user, $which) = @_;
9127: my @check;
9128: my $is_locked;
9129: push (@check,$file_name);
9130: my %locked = &get('file_permissions',\@check,
9131: $env{'user.domain'},$env{'user.name'});
9132: my ($tmp)=keys(%locked);
9133: if ($tmp=~/^error:/) { undef(%locked); }
9134:
9135: if (ref($locked{$file_name}) eq 'ARRAY') {
9136: $is_locked = 'false';
9137: foreach my $entry (@{$locked{$file_name}}) {
9138: if (ref($entry) eq 'ARRAY') {
9139: $is_locked = 'true';
9140: if (ref($which) eq 'ARRAY') {
9141: push(@{$which},$entry);
9142: } else {
9143: last;
9144: }
9145: }
9146: }
9147: } else {
9148: $is_locked = 'false';
9149: }
9150: return $is_locked;
9151: }
9152:
9153: sub declutter_portfile {
9154: my ($file) = @_;
9155: $file =~ s{^(/portfolio/|portfolio/)}{/};
9156: return $file;
9157: }
9158:
9159: # ------------------------------------------------------------- Mark as Read Only
9160:
9161: sub mark_as_readonly {
9162: my ($domain,$user,$files,$what) = @_;
9163: my %current_permissions = &dump('file_permissions',$domain,$user);
9164: my ($tmp)=keys(%current_permissions);
9165: if ($tmp=~/^error:/) { undef(%current_permissions); }
9166: foreach my $file (@{$files}) {
9167: $file = &declutter_portfile($file);
9168: push(@{$current_permissions{$file}},$what);
9169: }
9170: &put('file_permissions',\%current_permissions,$domain,$user);
9171: return;
9172: }
9173:
9174: # ------------------------------------------------------------Save Selected Files
9175:
9176: sub save_selected_files {
9177: my ($user, $path, @files) = @_;
9178: my $filename = $user."savedfiles";
9179: my @other_files = &files_not_in_path($user, $path);
9180: open (OUT, '>'.$tmpdir.$filename);
9181: foreach my $file (@files) {
9182: print (OUT $env{'form.currentpath'}.$file."\n");
9183: }
9184: foreach my $file (@other_files) {
9185: print (OUT $file."\n");
9186: }
9187: close (OUT);
9188: return 'ok';
9189: }
9190:
9191: sub clear_selected_files {
9192: my ($user) = @_;
9193: my $filename = $user."savedfiles";
9194: open (OUT, '>'.LONCAPA::tempdir().$filename);
9195: print (OUT undef);
9196: close (OUT);
9197: return ("ok");
9198: }
9199:
9200: sub files_in_path {
9201: my ($user, $path) = @_;
9202: my $filename = $user."savedfiles";
9203: my %return_files;
9204: open (IN, '<'.LONCAPA::tempdir().$filename);
9205: while (my $line_in = <IN>) {
9206: chomp ($line_in);
9207: my @paths_and_file = split (m!/!, $line_in);
9208: my $file_part = pop (@paths_and_file);
9209: my $path_part = join ('/', @paths_and_file);
9210: $path_part.='/';
9211: my $path_and_file = $path_part.$file_part;
9212: if ($path_part eq $path) {
9213: $return_files{$file_part}= 'selected';
9214: }
9215: }
9216: close (IN);
9217: return (\%return_files);
9218: }
9219:
9220: # called in portfolio select mode, to show files selected NOT in current directory
9221: sub files_not_in_path {
9222: my ($user, $path) = @_;
9223: my $filename = $user."savedfiles";
9224: my @return_files;
9225: my $path_part;
9226: open(IN, '<'.LONCAPA::.$filename);
9227: while (my $line = <IN>) {
9228: #ok, I know it's clunky, but I want it to work
9229: my @paths_and_file = split(m|/|, $line);
9230: my $file_part = pop(@paths_and_file);
9231: chomp($file_part);
9232: my $path_part = join('/', @paths_and_file);
9233: $path_part .= '/';
9234: my $path_and_file = $path_part.$file_part;
9235: if ($path_part ne $path) {
9236: push(@return_files, ($path_and_file));
9237: }
9238: }
9239: close(OUT);
9240: return (@return_files);
9241: }
9242:
9243: #----------------------------------------------Get portfolio file permissions
9244:
9245: sub get_portfile_permissions {
9246: my ($domain,$user) = @_;
9247: my %current_permissions = &dump('file_permissions',$domain,$user);
9248: my ($tmp)=keys(%current_permissions);
9249: if ($tmp=~/^error:/) { undef(%current_permissions); }
9250: return \%current_permissions;
9251: }
9252:
9253: #---------------------------------------------Get portfolio file access controls
9254:
9255: sub get_access_controls {
9256: my ($current_permissions,$group,$file) = @_;
9257: my %access;
9258: my $real_file = $file;
9259: $file =~ s/\.meta$//;
9260: if (defined($file)) {
9261: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9262: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9263: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9264: }
9265: }
9266: } else {
9267: foreach my $key (keys(%{$current_permissions})) {
9268: if ($key =~ /\0accesscontrol$/) {
9269: if (defined($group)) {
9270: if ($key !~ m-^\Q$group\E/-) {
9271: next;
9272: }
9273: }
9274: my ($fullpath) = split(/\0/,$key);
9275: if (ref($$current_permissions{$key}) eq 'HASH') {
9276: foreach my $control (keys(%{$$current_permissions{$key}})) {
9277: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9278: }
9279: }
9280: }
9281: }
9282: }
9283: return %access;
9284: }
9285:
9286: sub modify_access_controls {
9287: my ($file_name,$changes,$domain,$user)=@_;
9288: my ($outcome,$deloutcome);
9289: my %store_permissions;
9290: my %new_values;
9291: my %new_control;
9292: my %translation;
9293: my @deletions = ();
9294: my $now = time;
9295: if (exists($$changes{'activate'})) {
9296: if (ref($$changes{'activate'}) eq 'HASH') {
9297: my @newitems = sort(keys(%{$$changes{'activate'}}));
9298: my $numnew = scalar(@newitems);
9299: for (my $i=0; $i<$numnew; $i++) {
9300: my $newkey = $newitems[$i];
9301: my $newid = &Apache::loncommon::get_cgi_id();
9302: if ($newkey =~ /^\d+:/) {
9303: $newkey =~ s/^(\d+)/$newid/;
9304: $translation{$1} = $newid;
9305: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9306: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9307: $translation{$1} = $newid;
9308: }
9309: $new_values{$file_name."\0".$newkey} =
9310: $$changes{'activate'}{$newitems[$i]};
9311: $new_control{$newkey} = $now;
9312: }
9313: }
9314: }
9315: my %todelete;
9316: my %changed_items;
9317: foreach my $action ('delete','update') {
9318: if (exists($$changes{$action})) {
9319: if (ref($$changes{$action}) eq 'HASH') {
9320: foreach my $key (keys(%{$$changes{$action}})) {
9321: my ($itemnum) = ($key =~ /^([^:]+):/);
9322: if ($action eq 'delete') {
9323: $todelete{$itemnum} = 1;
9324: } else {
9325: $changed_items{$itemnum} = $key;
9326: }
9327: }
9328: }
9329: }
9330: }
9331: # get lock on access controls for file.
9332: my $lockhash = {
9333: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9334: ':'.$env{'user.domain'},
9335: };
9336: my $tries = 0;
9337: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9338:
9339: while (($gotlock ne 'ok') && $tries <3) {
9340: $tries ++;
9341: sleep 1;
9342: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9343: }
9344: if ($gotlock eq 'ok') {
9345: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9346: my ($tmp)=keys(%curr_permissions);
9347: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9348: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9349: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9350: if (ref($curr_controls) eq 'HASH') {
9351: foreach my $control_item (keys(%{$curr_controls})) {
9352: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9353: if (defined($todelete{$itemnum})) {
9354: push(@deletions,$file_name."\0".$control_item);
9355: } else {
9356: if (defined($changed_items{$itemnum})) {
9357: $new_control{$changed_items{$itemnum}} = $now;
9358: push(@deletions,$file_name."\0".$control_item);
9359: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9360: } else {
9361: $new_control{$control_item} = $$curr_controls{$control_item};
9362: }
9363: }
9364: }
9365: }
9366: }
9367: my ($group);
9368: if (&is_course($domain,$user)) {
9369: ($group,my $file) = split(/\//,$file_name,2);
9370: }
9371: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9372: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9373: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9374: # remove lock
9375: my @del_lock = ($file_name."\0".'locked_access_records');
9376: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9377: my $sqlresult =
9378: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9379: $group);
9380: } else {
9381: $outcome = "error: could not obtain lockfile\n";
9382: }
9383: return ($outcome,$deloutcome,\%new_values,\%translation);
9384: }
9385:
9386: sub make_public_indefinitely {
9387: my ($requrl) = @_;
9388: my $now = time;
9389: my $action = 'activate';
9390: my $aclnum = 0;
9391: if (&is_portfolio_url($requrl)) {
9392: my (undef,$udom,$unum,$file_name,$group) =
9393: &parse_portfolio_url($requrl);
9394: my $current_perms = &get_portfile_permissions($udom,$unum);
9395: my %access_controls = &get_access_controls($current_perms,
9396: $group,$file_name);
9397: foreach my $key (keys(%{$access_controls{$file_name}})) {
9398: my ($num,$scope,$end,$start) =
9399: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9400: if ($scope eq 'public') {
9401: if ($start <= $now && $end == 0) {
9402: $action = 'none';
9403: } else {
9404: $action = 'update';
9405: $aclnum = $num;
9406: }
9407: last;
9408: }
9409: }
9410: if ($action eq 'none') {
9411: return 'ok';
9412: } else {
9413: my %changes;
9414: my $newend = 0;
9415: my $newstart = $now;
9416: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9417: $changes{$action}{$newkey} = {
9418: type => 'public',
9419: time => {
9420: start => $newstart,
9421: end => $newend,
9422: },
9423: };
9424: my ($outcome,$deloutcome,$new_values,$translation) =
9425: &modify_access_controls($file_name,\%changes,$udom,$unum);
9426: return $outcome;
9427: }
9428: } else {
9429: return 'invalid';
9430: }
9431: }
9432:
9433: #------------------------------------------------------Get Marked as Read Only
9434:
9435: sub get_marked_as_readonly {
9436: my ($domain,$user,$what,$group) = @_;
9437: my $current_permissions = &get_portfile_permissions($domain,$user);
9438: my @readonly_files;
9439: my $cmp1=$what;
9440: if (ref($what)) { $cmp1=join('',@{$what}) };
9441: while (my ($file_name,$value) = each(%{$current_permissions})) {
9442: if (defined($group)) {
9443: if ($file_name !~ m-^\Q$group\E/-) {
9444: next;
9445: }
9446: }
9447: if (ref($value) eq "ARRAY"){
9448: foreach my $stored_what (@{$value}) {
9449: my $cmp2=$stored_what;
9450: if (ref($stored_what) eq 'ARRAY') {
9451: $cmp2=join('',@{$stored_what});
9452: }
9453: if ($cmp1 eq $cmp2) {
9454: push(@readonly_files, $file_name);
9455: last;
9456: } elsif (!defined($what)) {
9457: push(@readonly_files, $file_name);
9458: last;
9459: }
9460: }
9461: }
9462: }
9463: return @readonly_files;
9464: }
9465: #-----------------------------------------------------------Get Marked as Read Only Hash
9466:
9467: sub get_marked_as_readonly_hash {
9468: my ($current_permissions,$group,$what) = @_;
9469: my %readonly_files;
9470: while (my ($file_name,$value) = each(%{$current_permissions})) {
9471: if (defined($group)) {
9472: if ($file_name !~ m-^\Q$group\E/-) {
9473: next;
9474: }
9475: }
9476: if (ref($value) eq "ARRAY"){
9477: foreach my $stored_what (@{$value}) {
9478: if (ref($stored_what) eq 'ARRAY') {
9479: foreach my $lock_descriptor(@{$stored_what}) {
9480: if ($lock_descriptor eq 'graded') {
9481: $readonly_files{$file_name} = 'graded';
9482: } elsif ($lock_descriptor eq 'handback') {
9483: $readonly_files{$file_name} = 'handback';
9484: } else {
9485: if (!exists($readonly_files{$file_name})) {
9486: $readonly_files{$file_name} = 'locked';
9487: }
9488: }
9489: }
9490: }
9491: }
9492: }
9493: }
9494: return %readonly_files;
9495: }
9496: # ------------------------------------------------------------ Unmark as Read Only
9497:
9498: sub unmark_as_readonly {
9499: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9500: # for portfolio submissions, $what contains [$symb,$crsid]
9501: my ($domain,$user,$what,$file_name,$group) = @_;
9502: $file_name = &declutter_portfile($file_name);
9503: my $symb_crs = $what;
9504: if (ref($what)) { $symb_crs=join('',@$what); }
9505: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9506: my ($tmp)=keys(%current_permissions);
9507: if ($tmp=~/^error:/) { undef(%current_permissions); }
9508: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9509: foreach my $file (@readonly_files) {
9510: my $clean_file = &declutter_portfile($file);
9511: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9512: my $current_locks = $current_permissions{$file};
9513: my @new_locks;
9514: my @del_keys;
9515: if (ref($current_locks) eq "ARRAY"){
9516: foreach my $locker (@{$current_locks}) {
9517: my $compare=$locker;
9518: if (ref($locker) eq 'ARRAY') {
9519: $compare=join('',@{$locker});
9520: if ($compare ne $symb_crs) {
9521: push(@new_locks, $locker);
9522: }
9523: }
9524: }
9525: if (scalar(@new_locks) > 0) {
9526: $current_permissions{$file} = \@new_locks;
9527: } else {
9528: push(@del_keys, $file);
9529: &del('file_permissions',\@del_keys, $domain, $user);
9530: delete($current_permissions{$file});
9531: }
9532: }
9533: }
9534: &put('file_permissions',\%current_permissions,$domain,$user);
9535: return;
9536: }
9537:
9538: # ------------------------------------------------------------ Directory lister
9539:
9540: sub dirlist {
9541: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9542: $uri=~s/^\///;
9543: $uri=~s/\/$//;
9544: my ($udom, $uname);
9545: if ($getuserdir) {
9546: $udom = $userdomain;
9547: $uname = $username;
9548: } else {
9549: (undef,$udom,$uname)=split(/\//,$uri);
9550: if(defined($userdomain)) {
9551: $udom = $userdomain;
9552: }
9553: if(defined($username)) {
9554: $uname = $username;
9555: }
9556: }
9557: my ($dirRoot,$listing,@listing_results);
9558:
9559: $dirRoot = $perlvar{'lonDocRoot'};
9560: if (defined($getpropath)) {
9561: $dirRoot = &propath($udom,$uname);
9562: $dirRoot =~ s/\/$//;
9563: } elsif (defined($getuserdir)) {
9564: my $subdir=$uname.'__';
9565: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9566: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9567: ."/$udom/$subdir/$uname";
9568: } elsif (defined($alternateRoot)) {
9569: $dirRoot = $alternateRoot;
9570: }
9571:
9572: if($udom) {
9573: if($uname) {
9574: my $uhome = &homeserver($uname,$udom);
9575: if ($uhome eq 'no_host') {
9576: return ([],'no_host');
9577: }
9578: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9579: .$getuserdir.':'.&escape($dirRoot)
9580: .':'.&escape($uname).':'.&escape($udom),$uhome);
9581: if ($listing eq 'unknown_cmd') {
9582: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9583: } else {
9584: @listing_results = map { &unescape($_); } split(/:/,$listing);
9585: }
9586: if ($listing eq 'unknown_cmd') {
9587: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9588: @listing_results = split(/:/,$listing);
9589: } else {
9590: @listing_results = map { &unescape($_); } split(/:/,$listing);
9591: }
9592: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9593: ($listing eq 'rejected') || ($listing eq 'refused') ||
9594: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9595: return ([],$listing);
9596: } else {
9597: return (\@listing_results);
9598: }
9599: } elsif(!$alternateRoot) {
9600: my (%allusers,%listerror);
9601: my %servers = &get_servers($udom,'library');
9602: foreach my $tryserver (keys(%servers)) {
9603: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9604: &escape($udom),$tryserver);
9605: if ($listing eq 'unknown_cmd') {
9606: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9607: $udom, $tryserver);
9608: } else {
9609: @listing_results = map { &unescape($_); } split(/:/,$listing);
9610: }
9611: if ($listing eq 'unknown_cmd') {
9612: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9613: $udom, $tryserver);
9614: @listing_results = split(/:/,$listing);
9615: } else {
9616: @listing_results =
9617: map { &unescape($_); } split(/:/,$listing);
9618: }
9619: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9620: ($listing eq 'rejected') || ($listing eq 'refused') ||
9621: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9622: $listerror{$tryserver} = $listing;
9623: } else {
9624: foreach my $line (@listing_results) {
9625: my ($entry) = split(/&/,$line,2);
9626: $allusers{$entry} = 1;
9627: }
9628: }
9629: }
9630: my @alluserslist=();
9631: foreach my $user (sort(keys(%allusers))) {
9632: push(@alluserslist,$user.'&user');
9633: }
9634: return (\@alluserslist);
9635: } else {
9636: return ([],'missing username');
9637: }
9638: } elsif(!defined($getpropath)) {
9639: my $path = $perlvar{'lonDocRoot'}.'/res/';
9640: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9641: return (\@all_domains);
9642: } else {
9643: return ([],'missing domain');
9644: }
9645: }
9646:
9647: # --------------------------------------------- GetFileTimestamp
9648: # This function utilizes dirlist and returns the date stamp for
9649: # when it was last modified. It will also return an error of -1
9650: # if an error occurs
9651:
9652: sub GetFileTimestamp {
9653: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9654: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9655: $studentName = &LONCAPA::clean_username($studentName);
9656: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9657: undef,$getuserdir);
9658: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9659: return -1;
9660: }
9661: if (ref($fileref) eq 'ARRAY') {
9662: my @stats = split('&',$fileref->[0]);
9663: # @stats contains first the filename, then the stat output
9664: return $stats[10]; # so this is 10 instead of 9.
9665: } else {
9666: return -1;
9667: }
9668: }
9669:
9670: sub stat_file {
9671: my ($uri) = @_;
9672: $uri = &clutter_with_no_wrapper($uri);
9673:
9674: my ($udom,$uname,$file);
9675: if ($uri =~ m-^/(uploaded|editupload)/-) {
9676: ($udom,$uname,$file) =
9677: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9678: $file = 'userfiles/'.$file;
9679: }
9680: if ($uri =~ m-^/res/-) {
9681: ($udom,$uname) =
9682: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9683: $file = $uri;
9684: }
9685:
9686: if (!$udom || !$uname || !$file) {
9687: # unable to handle the uri
9688: return ();
9689: }
9690: my $getpropath;
9691: if ($file =~ /^userfiles\//) {
9692: $getpropath = 1;
9693: }
9694: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9695: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9696: return ();
9697: } else {
9698: if (ref($listref) eq 'ARRAY') {
9699: my @stats = split('&',$listref->[0]);
9700: shift(@stats); #filename is first
9701: return @stats;
9702: }
9703: }
9704: return ();
9705: }
9706:
9707: # -------------------------------------------------------- Value of a Condition
9708:
9709: # gets the value of a specific preevaluated condition
9710: # stored in the string $env{user.state.<cid>}
9711: # or looks up a condition reference in the bighash and if if hasn't
9712: # already been evaluated recurses into docondval to get the value of
9713: # the condition, then memoizing it to
9714: # $env{user.state.<cid>.<condition>}
9715: sub directcondval {
9716: my $number=shift;
9717: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9718: &Apache::lonuserstate::evalstate();
9719: }
9720: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9721: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9722: } elsif ($number =~ /^_/) {
9723: my $sub_condition;
9724: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9725: &GDBM_READER(),0640)) {
9726: $sub_condition=$bighash{'conditions'.$number};
9727: untie(%bighash);
9728: }
9729: my $value = &docondval($sub_condition);
9730: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9731: return $value;
9732: }
9733: if ($env{'user.state.'.$env{'request.course.id'}}) {
9734: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9735: } else {
9736: return 2;
9737: }
9738: }
9739:
9740: # get the collection of conditions for this resource
9741: sub condval {
9742: my $condidx=shift;
9743: my $allpathcond='';
9744: foreach my $cond (split(/\|/,$condidx)) {
9745: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9746: $allpathcond.=
9747: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9748: }
9749: }
9750: $allpathcond=~s/\|$//;
9751: return &docondval($allpathcond);
9752: }
9753:
9754: #evaluates an expression of conditions
9755: sub docondval {
9756: my ($allpathcond) = @_;
9757: my $result=0;
9758: if ($env{'request.course.id'}
9759: && defined($allpathcond)) {
9760: my $operand='|';
9761: my @stack;
9762: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9763: if ($chunk eq '(') {
9764: push @stack,($operand,$result);
9765: } elsif ($chunk eq ')') {
9766: my $before=pop @stack;
9767: if (pop @stack eq '&') {
9768: $result=$result>$before?$before:$result;
9769: } else {
9770: $result=$result>$before?$result:$before;
9771: }
9772: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9773: $operand=$chunk;
9774: } else {
9775: my $new=directcondval($chunk);
9776: if ($operand eq '&') {
9777: $result=$result>$new?$new:$result;
9778: } else {
9779: $result=$result>$new?$result:$new;
9780: }
9781: }
9782: }
9783: }
9784: return $result;
9785: }
9786:
9787: # ---------------------------------------------------- Devalidate courseresdata
9788:
9789: sub devalidatecourseresdata {
9790: my ($coursenum,$coursedomain)=@_;
9791: my $hashid=$coursenum.':'.$coursedomain;
9792: &devalidate_cache_new('courseres',$hashid);
9793: }
9794:
9795:
9796: # --------------------------------------------------- Course Resourcedata Query
9797: #
9798: # Parameters:
9799: # $coursenum - Number of the course.
9800: # $coursedomain - Domain at which the course was created.
9801: # Returns:
9802: # A hash of the course parameters along (I think) with timestamps
9803: # and version info.
9804:
9805: sub get_courseresdata {
9806: my ($coursenum,$coursedomain)=@_;
9807: my $coursehom=&homeserver($coursenum,$coursedomain);
9808: my $hashid=$coursenum.':'.$coursedomain;
9809: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9810: my %dumpreply;
9811: unless (defined($cached)) {
9812: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9813: $result=\%dumpreply;
9814: my ($tmp) = keys(%dumpreply);
9815: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9816: &do_cache_new('courseres',$hashid,$result,600);
9817: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9818: return $tmp;
9819: } elsif ($tmp =~ /^(error)/) {
9820: $result=undef;
9821: &do_cache_new('courseres',$hashid,$result,600);
9822: }
9823: }
9824: return $result;
9825: }
9826:
9827: sub devalidateuserresdata {
9828: my ($uname,$udom)=@_;
9829: my $hashid="$udom:$uname";
9830: &devalidate_cache_new('userres',$hashid);
9831: }
9832:
9833: sub get_userresdata {
9834: my ($uname,$udom)=@_;
9835: #most student don\'t have any data set, check if there is some data
9836: if (&EXT_cache_status($udom,$uname)) { return undef; }
9837:
9838: my $hashid="$udom:$uname";
9839: my ($result,$cached)=&is_cached_new('userres',$hashid);
9840: if (!defined($cached)) {
9841: my %resourcedata=&dump('resourcedata',$udom,$uname);
9842: $result=\%resourcedata;
9843: &do_cache_new('userres',$hashid,$result,600);
9844: }
9845: my ($tmp)=keys(%$result);
9846: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9847: return $result;
9848: }
9849: #error 2 occurs when the .db doesn't exist
9850: if ($tmp!~/error: 2 /) {
9851: &logthis("<font color=\"blue\">WARNING:".
9852: " Trying to get resource data for ".
9853: $uname." at ".$udom.": ".
9854: $tmp."</font>");
9855: } elsif ($tmp=~/error: 2 /) {
9856: #&EXT_cache_set($udom,$uname);
9857: &do_cache_new('userres',$hashid,undef,600);
9858: undef($tmp); # not really an error so don't send it back
9859: }
9860: return $tmp;
9861: }
9862: #----------------------------------------------- resdata - return resource data
9863: # Purpose:
9864: # Return resource data for either users or for a course.
9865: # Parameters:
9866: # $name - Course/user name.
9867: # $domain - Name of the domain the user/course is registered on.
9868: # $type - Type of thing $name is (must be 'course' or 'user'
9869: # @which - Array of names of resources desired.
9870: # Returns:
9871: # The value of the first reasource in @which that is found in the
9872: # resource hash.
9873: # Exceptional Conditions:
9874: # If the $type passed in is not valid (not the string 'course' or
9875: # 'user', an undefined reference is returned.
9876: # If none of the resources are found, an undef is returned
9877: sub resdata {
9878: my ($name,$domain,$type,@which)=@_;
9879: my $result;
9880: if ($type eq 'course') {
9881: $result=&get_courseresdata($name,$domain);
9882: } elsif ($type eq 'user') {
9883: $result=&get_userresdata($name,$domain);
9884: }
9885: if (!ref($result)) { return $result; }
9886: foreach my $item (@which) {
9887: if (defined($result->{$item->[0]})) {
9888: return [$result->{$item->[0]},$item->[1]];
9889: }
9890: }
9891: return undef;
9892: }
9893:
9894: sub get_numsuppfiles {
9895: my ($cnum,$cdom,$ignorecache)=@_;
9896: my $hashid=$cnum.':'.$cdom;
9897: my ($suppcount,$cached);
9898: unless ($ignorecache) {
9899: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
9900: }
9901: unless (defined($cached)) {
9902: my $chome=&homeserver($cnum,$cdom);
9903: unless ($chome eq 'no_host') {
9904: ($suppcount,my $errors) = (0,0);
9905: my $suppmap = 'supplemental.sequence';
9906: ($suppcount,$errors) =
9907: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
9908: }
9909: &do_cache_new('suppcount',$hashid,$suppcount,600);
9910: }
9911: return $suppcount;
9912: }
9913:
9914: #
9915: # EXT resource caching routines
9916: #
9917:
9918: sub clear_EXT_cache_status {
9919: &delenv('cache.EXT.');
9920: }
9921:
9922: sub EXT_cache_status {
9923: my ($target_domain,$target_user) = @_;
9924: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9925: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9926: # We know already the user has no data
9927: return 1;
9928: } else {
9929: return 0;
9930: }
9931: }
9932:
9933: sub EXT_cache_set {
9934: my ($target_domain,$target_user) = @_;
9935: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9936: #&appenv({$cachename => time});
9937: }
9938:
9939: # --------------------------------------------------------- Value of a Variable
9940: sub EXT {
9941:
9942: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
9943: unless ($varname) { return ''; }
9944: #get real user name/domain, courseid and symb
9945: my $courseid;
9946: my $publicuser;
9947: if ($symbparm) {
9948: $symbparm=&get_symb_from_alias($symbparm);
9949: }
9950: if (!($uname && $udom)) {
9951: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9952: if (!$symbparm) { $symbparm=$cursymb; }
9953: } else {
9954: $courseid=$env{'request.course.id'};
9955: }
9956: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9957: my $rest;
9958: if (defined($therest[0])) {
9959: $rest=join('.',@therest);
9960: } else {
9961: $rest='';
9962: }
9963:
9964: my $qualifierrest=$qualifier;
9965: if ($rest) { $qualifierrest.='.'.$rest; }
9966: my $spacequalifierrest=$space;
9967: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9968: if ($realm eq 'user') {
9969: # --------------------------------------------------------------- user.resource
9970: if ($space eq 'resource') {
9971: if ( (defined($Apache::lonhomework::parsing_a_problem)
9972: || defined($Apache::lonhomework::parsing_a_task))
9973: &&
9974: ($symbparm eq &symbread()) ) {
9975: # if we are in the middle of processing the resource the
9976: # get the value we are planning on committing
9977: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9978: return $Apache::lonhomework::results{$qualifierrest};
9979: } else {
9980: return $Apache::lonhomework::history{$qualifierrest};
9981: }
9982: } else {
9983: my %restored;
9984: if ($publicuser || $env{'request.state'} eq 'construct') {
9985: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9986: } else {
9987: %restored=&restore($symbparm,$courseid,$udom,$uname);
9988: }
9989: return $restored{$qualifierrest};
9990: }
9991: # ----------------------------------------------------------------- user.access
9992: } elsif ($space eq 'access') {
9993: # FIXME - not supporting calls for a specific user
9994: return &allowed($qualifier,$rest);
9995: # ------------------------------------------ user.preferences, user.environment
9996: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9997: if (($uname eq $env{'user.name'}) &&
9998: ($udom eq $env{'user.domain'})) {
9999: return $env{join('.',('environment',$qualifierrest))};
10000: } else {
10001: my %returnhash;
10002: if (!$publicuser) {
10003: %returnhash=&userenvironment($udom,$uname,
10004: $qualifierrest);
10005: }
10006: return $returnhash{$qualifierrest};
10007: }
10008: # ----------------------------------------------------------------- user.course
10009: } elsif ($space eq 'course') {
10010: # FIXME - not supporting calls for a specific user
10011: return $env{join('.',('request.course',$qualifier))};
10012: # ------------------------------------------------------------------- user.role
10013: } elsif ($space eq 'role') {
10014: # FIXME - not supporting calls for a specific user
10015: my ($role,$where)=split(/\./,$env{'request.role'});
10016: if ($qualifier eq 'value') {
10017: return $role;
10018: } elsif ($qualifier eq 'extent') {
10019: return $where;
10020: }
10021: # ----------------------------------------------------------------- user.domain
10022: } elsif ($space eq 'domain') {
10023: return $udom;
10024: # ------------------------------------------------------------------- user.name
10025: } elsif ($space eq 'name') {
10026: return $uname;
10027: # ---------------------------------------------------- Any other user namespace
10028: } else {
10029: my %reply;
10030: if (!$publicuser) {
10031: %reply=&get($space,[$qualifierrest],$udom,$uname);
10032: }
10033: return $reply{$qualifierrest};
10034: }
10035: } elsif ($realm eq 'query') {
10036: # ---------------------------------------------- pull stuff out of query string
10037: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
10038: [$spacequalifierrest]);
10039: return $env{'form.'.$spacequalifierrest};
10040: } elsif ($realm eq 'request') {
10041: # ------------------------------------------------------------- request.browser
10042: if ($space eq 'browser') {
10043: return $env{'browser.'.$qualifier};
10044: # ------------------------------------------------------------ request.filename
10045: } else {
10046: return $env{'request.'.$spacequalifierrest};
10047: }
10048: } elsif ($realm eq 'course') {
10049: # ---------------------------------------------------------- course.description
10050: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
10051: } elsif ($realm eq 'resource') {
10052:
10053: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
10054: if (!$symbparm) { $symbparm=&symbread(); }
10055: }
10056:
10057: if ($qualifier eq '') {
10058: if ($space eq 'title') {
10059: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
10060: return &gettitle($symbparm);
10061: }
10062:
10063: if ($space eq 'map') {
10064: my ($map) = &decode_symb($symbparm);
10065: return &symbread($map);
10066: }
10067: if ($space eq 'maptitle') {
10068: my ($map) = &decode_symb($symbparm);
10069: return &gettitle($map);
10070: }
10071: if ($space eq 'filename') {
10072: if ($symbparm) {
10073: return &clutter((&decode_symb($symbparm))[2]);
10074: }
10075: return &hreflocation('',$env{'request.filename'});
10076: }
10077:
10078: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
10079: if ($space eq 'visibleparts') {
10080: my $navmap = Apache::lonnavmaps::navmap->new();
10081: my $item;
10082: if (ref($navmap)) {
10083: my $res = $navmap->getBySymb($symbparm);
10084: my $parts = $res->parts();
10085: if (ref($parts) eq 'ARRAY') {
10086: $item = join(',',@{$parts});
10087: }
10088: undef($navmap);
10089: }
10090: return $item;
10091: }
10092: }
10093: }
10094:
10095: my ($section, $group, @groups);
10096: my ($courselevelm,$courselevel);
10097: if (($courseid eq '') && ($cid)) {
10098: $courseid = $cid;
10099: }
10100: if (($symbparm && $courseid) &&
10101: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
10102:
10103: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
10104:
10105: # ----------------------------------------------------- Cascading lookup scheme
10106: my $symbp=$symbparm;
10107: my $mapp=&deversion((&decode_symb($symbp))[0]);
10108:
10109: my $symbparm=$symbp.'.'.$spacequalifierrest;
10110: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
10111:
10112: if (($env{'user.name'} eq $uname) &&
10113: ($env{'user.domain'} eq $udom)) {
10114: $section=$env{'request.course.sec'};
10115: @groups = split(/:/,$env{'request.course.groups'});
10116: @groups=&sort_course_groups($courseid,@groups);
10117: } else {
10118: if (! defined($usection)) {
10119: $section=&getsection($udom,$uname,$courseid);
10120: } else {
10121: $section = $usection;
10122: }
10123: @groups = &get_users_groups($udom,$uname,$courseid);
10124: }
10125:
10126: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
10127: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
10128: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
10129:
10130: $courselevel=$courseid.'.'.$spacequalifierrest;
10131: my $courselevelr=$courseid.'.'.$symbparm;
10132: $courselevelm=$courseid.'.'.$mapparm;
10133:
10134: # ----------------------------------------------------------- first, check user
10135:
10136: my $userreply=&resdata($uname,$udom,'user',
10137: ([$courselevelr,'resource'],
10138: [$courselevelm,'map' ],
10139: [$courselevel, 'course' ]));
10140: if (defined($userreply)) { return &get_reply($userreply); }
10141:
10142: # ------------------------------------------------ second, check some of course
10143: my $coursereply;
10144: if (@groups > 0) {
10145: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
10146: $mapparm,$spacequalifierrest);
10147: if (defined($coursereply)) { return &get_reply($coursereply); }
10148: }
10149:
10150: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10151: $env{'course.'.$courseid.'.domain'},
10152: 'course',
10153: ([$seclevelr, 'resource'],
10154: [$seclevelm, 'map' ],
10155: [$seclevel, 'course' ],
10156: [$courselevelr,'resource']));
10157: if (defined($coursereply)) { return &get_reply($coursereply); }
10158:
10159: # ------------------------------------------------------ third, check map parms
10160: my %parmhash=();
10161: my $thisparm='';
10162: if (tie(%parmhash,'GDBM_File',
10163: $env{'request.course.fn'}.'_parms.db',
10164: &GDBM_READER(),0640)) {
10165: $thisparm=$parmhash{$symbparm};
10166: untie(%parmhash);
10167: }
10168: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
10169: }
10170: # ------------------------------------------ fourth, look in resource metadata
10171:
10172: $spacequalifierrest=~s/\./\_/;
10173: my $filename;
10174: if (!$symbparm) { $symbparm=&symbread(); }
10175: if ($symbparm) {
10176: $filename=(&decode_symb($symbparm))[2];
10177: } else {
10178: $filename=$env{'request.filename'};
10179: }
10180: my $metadata=&metadata($filename,$spacequalifierrest);
10181: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10182: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
10183: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10184:
10185: # ---------------------------------------------- fourth, look in rest of course
10186: if ($symbparm && defined($courseid) &&
10187: $courseid eq $env{'request.course.id'}) {
10188: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10189: $env{'course.'.$courseid.'.domain'},
10190: 'course',
10191: ([$courselevelm,'map' ],
10192: [$courselevel, 'course']));
10193: if (defined($coursereply)) { return &get_reply($coursereply); }
10194: }
10195: # ------------------------------------------------------------------ Cascade up
10196: unless ($space eq '0') {
10197: my @parts=split(/_/,$space);
10198: my $id=pop(@parts);
10199: my $part=join('_',@parts);
10200: if ($part eq '') { $part='0'; }
10201: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
10202: $symbparm,$udom,$uname,$section,1);
10203: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
10204: }
10205: if ($recurse) { return undef; }
10206: my $pack_def=&packages_tab_default($filename,$varname);
10207: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
10208: # ---------------------------------------------------- Any other user namespace
10209: } elsif ($realm eq 'environment') {
10210: # ----------------------------------------------------------------- environment
10211: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
10212: return $env{'environment.'.$spacequalifierrest};
10213: } else {
10214: if ($uname eq 'anonymous' && $udom eq '') {
10215: return '';
10216: }
10217: my %returnhash=&userenvironment($udom,$uname,
10218: $spacequalifierrest);
10219: return $returnhash{$spacequalifierrest};
10220: }
10221: } elsif ($realm eq 'system') {
10222: # ----------------------------------------------------------------- system.time
10223: if ($space eq 'time') {
10224: return time;
10225: }
10226: } elsif ($realm eq 'server') {
10227: # ----------------------------------------------------------------- system.time
10228: if ($space eq 'name') {
10229: return $ENV{'SERVER_NAME'};
10230: }
10231: }
10232: return '';
10233: }
10234:
10235: sub get_reply {
10236: my ($reply_value) = @_;
10237: if (ref($reply_value) eq 'ARRAY') {
10238: if (wantarray) {
10239: return @$reply_value;
10240: }
10241: return $reply_value->[0];
10242: } else {
10243: return $reply_value;
10244: }
10245: }
10246:
10247: sub check_group_parms {
10248: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
10249: my @groupitems = ();
10250: my $resultitem;
10251: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
10252: foreach my $group (@{$groups}) {
10253: foreach my $level (@levels) {
10254: my $item = $courseid.'.['.$group.'].'.$level->[0];
10255: push(@groupitems,[$item,$level->[1]]);
10256: }
10257: }
10258: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10259: $env{'course.'.$courseid.'.domain'},
10260: 'course',@groupitems);
10261: return $coursereply;
10262: }
10263:
10264: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10265: my ($courseid,@groups) = @_;
10266: @groups = sort(@groups);
10267: return @groups;
10268: }
10269:
10270: sub packages_tab_default {
10271: my ($uri,$varname)=@_;
10272: my (undef,$part,$name)=split(/\./,$varname);
10273:
10274: my (@extension,@specifics,$do_default);
10275: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10276: my ($pack_type,$pack_part)=split(/_/,$package,2);
10277: if ($pack_type eq 'default') {
10278: $do_default=1;
10279: } elsif ($pack_type eq 'extension') {
10280: push(@extension,[$package,$pack_type,$pack_part]);
10281: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10282: # only look at packages defaults for packages that this id is
10283: push(@specifics,[$package,$pack_type,$pack_part]);
10284: }
10285: }
10286: # first look for a package that matches the requested part id
10287: foreach my $package (@specifics) {
10288: my (undef,$pack_type,$pack_part)=@{$package};
10289: next if ($pack_part ne $part);
10290: if (defined($packagetab{"$pack_type&$name&default"})) {
10291: return $packagetab{"$pack_type&$name&default"};
10292: }
10293: }
10294: # look for any possible matching non extension_ package
10295: foreach my $package (@specifics) {
10296: my (undef,$pack_type,$pack_part)=@{$package};
10297: if (defined($packagetab{"$pack_type&$name&default"})) {
10298: return $packagetab{"$pack_type&$name&default"};
10299: }
10300: if ($pack_type eq 'part') { $pack_part='0'; }
10301: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10302: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10303: }
10304: }
10305: # look for any posible extension_ match
10306: foreach my $package (@extension) {
10307: my ($package,$pack_type)=@{$package};
10308: if (defined($packagetab{"$pack_type&$name&default"})) {
10309: return $packagetab{"$pack_type&$name&default"};
10310: }
10311: if (defined($packagetab{$package."&$name&default"})) {
10312: return $packagetab{$package."&$name&default"};
10313: }
10314: }
10315: # look for a global default setting
10316: if ($do_default && defined($packagetab{"default&$name&default"})) {
10317: return $packagetab{"default&$name&default"};
10318: }
10319: return undef;
10320: }
10321:
10322: sub add_prefix_and_part {
10323: my ($prefix,$part)=@_;
10324: my $keyroot;
10325: if (defined($prefix) && $prefix !~ /^__/) {
10326: # prefix that has a part already
10327: $keyroot=$prefix;
10328: } elsif (defined($prefix)) {
10329: # prefix that is missing a part
10330: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10331: } else {
10332: # no prefix at all
10333: if (defined($part)) { $keyroot='_'.$part; }
10334: }
10335: return $keyroot;
10336: }
10337:
10338: # ---------------------------------------------------------------- Get metadata
10339:
10340: my %metaentry;
10341: my %importedpartids;
10342: sub metadata {
10343: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10344: $uri=&declutter($uri);
10345: # if it is a non metadata possible uri return quickly
10346: if (($uri eq '') ||
10347: (($uri =~ m|^/*adm/|) &&
10348: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10349: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10350: return undef;
10351: }
10352: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
10353: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10354: return undef;
10355: }
10356: my $filename=$uri;
10357: $uri=~s/\.meta$//;
10358: #
10359: # Is the metadata already cached?
10360: # Look at timestamp of caching
10361: # Everything is cached by the main uri, libraries are never directly cached
10362: #
10363: if (!defined($liburi)) {
10364: my ($result,$cached)=&is_cached_new('meta',$uri);
10365: if (defined($cached)) { return $result->{':'.$what}; }
10366: }
10367: {
10368: # Imported parts would go here
10369: my %importedids=();
10370: my @origfileimportpartids=();
10371: my $importedparts=0;
10372: #
10373: # Is this a recursive call for a library?
10374: #
10375: # if (! exists($metacache{$uri})) {
10376: # $metacache{$uri}={};
10377: # }
10378: my $cachetime = 60*60;
10379: if ($liburi) {
10380: $liburi=&declutter($liburi);
10381: $filename=$liburi;
10382: } else {
10383: &devalidate_cache_new('meta',$uri);
10384: undef(%metaentry);
10385: }
10386: my %metathesekeys=();
10387: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10388: my $metastring;
10389: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10390: my $which = &hreflocation('','/'.($liburi || $uri));
10391: $metastring =
10392: &Apache::lonnet::ssi_body($which,
10393: ('grade_target' => 'meta'));
10394: $cachetime = 1; # only want this cached in the child not long term
10395: } elsif (($uri !~ m -^(editupload)/-) &&
10396: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10397: my $file=&filelocation('',&clutter($filename));
10398: #push(@{$metaentry{$uri.'.file'}},$file);
10399: $metastring=&getfile($file);
10400: }
10401: my $parser=HTML::LCParser->new(\$metastring);
10402: my $token;
10403: undef %metathesekeys;
10404: while ($token=$parser->get_token) {
10405: if ($token->[0] eq 'S') {
10406: if (defined($token->[2]->{'package'})) {
10407: #
10408: # This is a package - get package info
10409: #
10410: my $package=$token->[2]->{'package'};
10411: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10412: if (defined($token->[2]->{'id'})) {
10413: $keyroot.='_'.$token->[2]->{'id'};
10414: }
10415: if ($metaentry{':packages'}) {
10416: $metaentry{':packages'}.=','.$package.$keyroot;
10417: } else {
10418: $metaentry{':packages'}=$package.$keyroot;
10419: }
10420: foreach my $pack_entry (keys(%packagetab)) {
10421: my $part=$keyroot;
10422: $part=~s/^\_//;
10423: if ($pack_entry=~/^\Q$package\E\&/ ||
10424: $pack_entry=~/^\Q$package\E_0\&/) {
10425: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10426: # ignore package.tab specified default values
10427: # here &package_tab_default() will fetch those
10428: if ($subp eq 'default') { next; }
10429: my $value=$packagetab{$pack_entry};
10430: my $unikey;
10431: if ($pack =~ /_0$/) {
10432: $unikey='parameter_0_'.$name;
10433: $part=0;
10434: } else {
10435: $unikey='parameter'.$keyroot.'_'.$name;
10436: }
10437: if ($subp eq 'display') {
10438: $value.=' [Part: '.$part.']';
10439: }
10440: $metaentry{':'.$unikey.'.part'}=$part;
10441: $metathesekeys{$unikey}=1;
10442: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10443: $metaentry{':'.$unikey.'.'.$subp}=$value;
10444: }
10445: if (defined($metaentry{':'.$unikey.'.default'})) {
10446: $metaentry{':'.$unikey}=
10447: $metaentry{':'.$unikey.'.default'};
10448: }
10449: }
10450: }
10451: } else {
10452: #
10453: # This is not a package - some other kind of start tag
10454: #
10455: my $entry=$token->[1];
10456: my $unikey='';
10457:
10458: if ($entry eq 'import') {
10459: #
10460: # Importing a library here
10461: #
10462: my $location=$parser->get_text('/import');
10463: my $dir=$filename;
10464: $dir=~s|[^/]*$||;
10465: $location=&filelocation($dir,$location);
10466:
10467: my $importmode=$token->[2]->{'importmode'};
10468: if ($importmode eq 'problem') {
10469: # Import as problem/response
10470: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10471: } elsif ($importmode eq 'part') {
10472: # Import as part(s)
10473: $importedparts=1;
10474: # We need to get the original file and the imported file to get the part order correct
10475: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10476: # Load and inspect original file
10477: if ($#origfileimportpartids<0) {
10478: undef(%importedpartids);
10479: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10480: my $origfile=&getfile($origfilelocation);
10481: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10482: }
10483:
10484: # Load and inspect imported file
10485: my $impfile=&getfile($location);
10486: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10487: if ($#impfilepartids>=0) {
10488: # This problem had parts
10489: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10490: } else {
10491: # Importing by turning a single problem into a problem part
10492: # It gets the import-tags ID as part-ID
10493: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10494: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10495: }
10496: } else {
10497: # Normal import
10498: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10499: if (defined($token->[2]->{'id'})) {
10500: $unikey.='_'.$token->[2]->{'id'};
10501: }
10502: }
10503:
10504: if ($depthcount<20) {
10505: my $metadata =
10506: &metadata($uri,'keys', $location,$unikey,
10507: $depthcount+1);
10508: foreach my $meta (split(',',$metadata)) {
10509: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10510: $metathesekeys{$meta}=1;
10511: }
10512:
10513: }
10514: } else {
10515: #
10516: # Not importing, some other kind of non-package, non-library start tag
10517: #
10518: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10519: if (defined($token->[2]->{'id'})) {
10520: $unikey.='_'.$token->[2]->{'id'};
10521: }
10522: if (defined($token->[2]->{'name'})) {
10523: $unikey.='_'.$token->[2]->{'name'};
10524: }
10525: $metathesekeys{$unikey}=1;
10526: foreach my $param (@{$token->[3]}) {
10527: $metaentry{':'.$unikey.'.'.$param} =
10528: $token->[2]->{$param};
10529: }
10530: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10531: my $default=$metaentry{':'.$unikey.'.default'};
10532: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10533: # only ws inside the tag, and not in default, so use default
10534: # as value
10535: $metaentry{':'.$unikey}=$default;
10536: } elsif ( $internaltext =~ /\S/ ) {
10537: # something interesting inside the tag
10538: $metaentry{':'.$unikey}=$internaltext;
10539: } else {
10540: # no interesting values, don't set a default
10541: }
10542: # end of not-a-package not-a-library import
10543: }
10544: # end of not-a-package start tag
10545: }
10546: # the next is the end of "start tag"
10547: }
10548: }
10549: my ($extension) = ($uri =~ /\.(\w+)$/);
10550: $extension = lc($extension);
10551: if ($extension eq 'htm') { $extension='html'; }
10552:
10553: foreach my $key (keys(%packagetab)) {
10554: #no specific packages #how's our extension
10555: if ($key!~/^extension_\Q$extension\E&/) { next; }
10556: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10557: \%metathesekeys);
10558: }
10559:
10560: if (!exists($metaentry{':packages'})
10561: || $packagetab{"import_defaults&extension_$extension"}) {
10562: foreach my $key (keys(%packagetab)) {
10563: #no specific packages well let's get default then
10564: if ($key!~/^default&/) { next; }
10565: &metadata_create_package_def($uri,$key,'default',
10566: \%metathesekeys);
10567: }
10568: }
10569: # are there custom rights to evaluate
10570: if ($metaentry{':copyright'} eq 'custom') {
10571:
10572: #
10573: # Importing a rights file here
10574: #
10575: unless ($depthcount) {
10576: my $location=$metaentry{':customdistributionfile'};
10577: my $dir=$filename;
10578: $dir=~s|[^/]*$||;
10579: $location=&filelocation($dir,$location);
10580: my $rights_metadata =
10581: &metadata($uri,'keys',$location,'_rights',
10582: $depthcount+1);
10583: foreach my $rights (split(',',$rights_metadata)) {
10584: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10585: $metathesekeys{$rights}=1;
10586: }
10587: }
10588: }
10589: # uniqifiy package listing
10590: my %seen;
10591: my @uniq_packages =
10592: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10593: $metaentry{':packages'} = join(',',@uniq_packages);
10594:
10595: if ($importedparts) {
10596: # We had imported parts and need to rebuild partorder
10597: $metaentry{':partorder'}='';
10598: $metathesekeys{'partorder'}=1;
10599: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10600: if ($origfileimportpartids[$index] eq 'part') {
10601: # original part, part of the problem
10602: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10603: } else {
10604: # we have imported parts at this position
10605: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10606: }
10607: }
10608: $metaentry{':partorder'}=~s/^\,//;
10609: }
10610:
10611: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10612: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10613: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
10614: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10615: # this is the end of "was not already recently cached
10616: }
10617: return $metaentry{':'.$what};
10618: }
10619:
10620: sub metadata_create_package_def {
10621: my ($uri,$key,$package,$metathesekeys)=@_;
10622: my ($pack,$name,$subp)=split(/\&/,$key);
10623: if ($subp eq 'default') { next; }
10624:
10625: if (defined($metaentry{':packages'})) {
10626: $metaentry{':packages'}.=','.$package;
10627: } else {
10628: $metaentry{':packages'}=$package;
10629: }
10630: my $value=$packagetab{$key};
10631: my $unikey;
10632: $unikey='parameter_0_'.$name;
10633: $metaentry{':'.$unikey.'.part'}=0;
10634: $$metathesekeys{$unikey}=1;
10635: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10636: $metaentry{':'.$unikey.'.'.$subp}=$value;
10637: }
10638: if (defined($metaentry{':'.$unikey.'.default'})) {
10639: $metaentry{':'.$unikey}=
10640: $metaentry{':'.$unikey.'.default'};
10641: }
10642: }
10643:
10644: sub metadata_generate_part0 {
10645: my ($metadata,$metacache,$uri) = @_;
10646: my %allnames;
10647: foreach my $metakey (keys(%$metadata)) {
10648: if ($metakey=~/^parameter\_(.*)/) {
10649: my $part=$$metacache{':'.$metakey.'.part'};
10650: my $name=$$metacache{':'.$metakey.'.name'};
10651: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10652: $allnames{$name}=$part;
10653: }
10654: }
10655: }
10656: foreach my $name (keys(%allnames)) {
10657: $$metadata{"parameter_0_$name"}=1;
10658: my $key=":parameter_0_$name";
10659: $$metacache{"$key.part"}='0';
10660: $$metacache{"$key.name"}=$name;
10661: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10662: $allnames{$name}.'_'.$name.
10663: '.type'};
10664: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10665: '.display'};
10666: my $expr='[Part: '.$allnames{$name}.']';
10667: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10668: $$metacache{"$key.display"}=$olddis;
10669: }
10670: }
10671:
10672: # ------------------------------------------------------ Devalidate title cache
10673:
10674: sub devalidate_title_cache {
10675: my ($url)=@_;
10676: if (!$env{'request.course.id'}) { return; }
10677: my $symb=&symbread($url);
10678: if (!$symb) { return; }
10679: my $key=$env{'request.course.id'}."\0".$symb;
10680: &devalidate_cache_new('title',$key);
10681: }
10682:
10683: # ------------------------------------------------- Get the title of a course
10684:
10685: sub current_course_title {
10686: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10687: }
10688: # ------------------------------------------------- Get the title of a resource
10689:
10690: sub gettitle {
10691: my $urlsymb=shift;
10692: my $symb=&symbread($urlsymb);
10693: if ($symb) {
10694: my $key=$env{'request.course.id'}."\0".$symb;
10695: my ($result,$cached)=&is_cached_new('title',$key);
10696: if (defined($cached)) {
10697: return $result;
10698: }
10699: my ($map,$resid,$url)=&decode_symb($symb);
10700: my $title='';
10701: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10702: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10703: } else {
10704: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10705: &GDBM_READER(),0640)) {
10706: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10707: $title=$bighash{'title_'.$mapid.'.'.$resid};
10708: untie(%bighash);
10709: }
10710: }
10711: $title=~s/\&colon\;/\:/gs;
10712: if ($title) {
10713: # Remember both $symb and $title for dynamic metadata
10714: $accesshash{$symb.'___crstitle'}=$title;
10715: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10716: # Cache this title and then return it
10717: return &do_cache_new('title',$key,$title,600);
10718: }
10719: $urlsymb=$url;
10720: }
10721: my $title=&metadata($urlsymb,'title');
10722: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10723: return $title;
10724: }
10725:
10726: sub get_slot {
10727: my ($which,$cnum,$cdom)=@_;
10728: if (!$cnum || !$cdom) {
10729: (undef,my $courseid)=&whichuser();
10730: $cdom=$env{'course.'.$courseid.'.domain'};
10731: $cnum=$env{'course.'.$courseid.'.num'};
10732: }
10733: my $key=join("\0",'slots',$cdom,$cnum,$which);
10734: my %slotinfo;
10735: if (exists($remembered{$key})) {
10736: $slotinfo{$which} = $remembered{$key};
10737: } else {
10738: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10739: &Apache::lonhomework::showhash(%slotinfo);
10740: my ($tmp)=keys(%slotinfo);
10741: if ($tmp=~/^error:/) { return (); }
10742: $remembered{$key} = $slotinfo{$which};
10743: }
10744: if (ref($slotinfo{$which}) eq 'HASH') {
10745: return %{$slotinfo{$which}};
10746: }
10747: return $slotinfo{$which};
10748: }
10749:
10750: sub get_reservable_slots {
10751: my ($cnum,$cdom,$uname,$udom) = @_;
10752: my $now = time;
10753: my $reservable_info;
10754: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10755: if (exists($remembered{$key})) {
10756: $reservable_info = $remembered{$key};
10757: } else {
10758: my %resv;
10759: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10760: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10761: $reservable_info = \%resv;
10762: $remembered{$key} = $reservable_info;
10763: }
10764: return $reservable_info;
10765: }
10766:
10767: sub get_course_slots {
10768: my ($cnum,$cdom) = @_;
10769: my $hashid=$cnum.':'.$cdom;
10770: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10771: if (defined($cached)) {
10772: if (ref($result) eq 'HASH') {
10773: return %{$result};
10774: }
10775: } else {
10776: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10777: my ($tmp) = keys(%slots);
10778: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10779: &do_cache_new('allslots',$hashid,\%slots,600);
10780: return %slots;
10781: }
10782: }
10783: return;
10784: }
10785:
10786: sub devalidate_slots_cache {
10787: my ($cnum,$cdom)=@_;
10788: my $hashid=$cnum.':'.$cdom;
10789: &devalidate_cache_new('allslots',$hashid);
10790: }
10791:
10792: sub get_coursechange {
10793: my ($cdom,$cnum) = @_;
10794: if ($cdom eq '' || $cnum eq '') {
10795: return unless ($env{'request.course.id'});
10796: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10797: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10798: }
10799: my $hashid=$cdom.'_'.$cnum;
10800: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10801: if ((defined($cached)) && ($change ne '')) {
10802: return $change;
10803: } else {
10804: my %crshash;
10805: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10806: if ($crshash{'internal.contentchange'} eq '') {
10807: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10808: if ($change eq '') {
10809: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10810: $change = $crshash{'internal.created'};
10811: }
10812: } else {
10813: $change = $crshash{'internal.contentchange'};
10814: }
10815: my $cachetime = 600;
10816: &do_cache_new('crschange',$hashid,$change,$cachetime);
10817: }
10818: return $change;
10819: }
10820:
10821: sub devalidate_coursechange_cache {
10822: my ($cnum,$cdom)=@_;
10823: my $hashid=$cnum.':'.$cdom;
10824: &devalidate_cache_new('crschange',$hashid);
10825: }
10826:
10827: # ------------------------------------------------- Update symbolic store links
10828:
10829: sub symblist {
10830: my ($mapname,%newhash)=@_;
10831: $mapname=&deversion(&declutter($mapname));
10832: my %hash;
10833: if (($env{'request.course.fn'}) && (%newhash)) {
10834: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10835: &GDBM_WRCREAT(),0640)) {
10836: foreach my $url (keys(%newhash)) {
10837: next if ($url eq 'last_known'
10838: && $env{'form.no_update_last_known'});
10839: $hash{declutter($url)}=&encode_symb($mapname,
10840: $newhash{$url}->[1],
10841: $newhash{$url}->[0]);
10842: }
10843: if (untie(%hash)) {
10844: return 'ok';
10845: }
10846: }
10847: }
10848: return 'error';
10849: }
10850:
10851: # --------------------------------------------------------------- Verify a symb
10852:
10853: sub symbverify {
10854: my ($symb,$thisurl,$encstate)=@_;
10855: my $thisfn=$thisurl;
10856: $thisfn=&declutter($thisfn);
10857: # direct jump to resource in page or to a sequence - will construct own symbs
10858: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10859: # check URL part
10860: my ($map,$resid,$url)=&decode_symb($symb);
10861:
10862: unless ($url eq $thisfn) { return 0; }
10863:
10864: $symb=&symbclean($symb);
10865: $thisurl=&deversion($thisurl);
10866: $thisfn=&deversion($thisfn);
10867:
10868: my %bighash;
10869: my $okay=0;
10870:
10871: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10872: &GDBM_READER(),0640)) {
10873: my $noclutter;
10874: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10875: $thisurl =~ s/\?.+$//;
10876: if ($map =~ m{^uploaded/.+\.page$}) {
10877: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10878: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10879: $noclutter = 1;
10880: }
10881: }
10882: my $ids;
10883: if ($noclutter) {
10884: $ids=$bighash{'ids_'.$thisurl};
10885: } else {
10886: $ids=$bighash{'ids_'.&clutter($thisurl)};
10887: }
10888: unless ($ids) {
10889: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10890: $ids=$bighash{$idkey};
10891: }
10892: if ($ids) {
10893: # ------------------------------------------------------------------- Has ID(s)
10894: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10895: $symb =~ s/\?.+$//;
10896: }
10897: foreach my $id (split(/\,/,$ids)) {
10898: my ($mapid,$resid)=split(/\./,$id);
10899: if (
10900: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10901: eq $symb) {
10902: if (ref($encstate)) {
10903: $$encstate = $bighash{'encrypted_'.$id};
10904: }
10905: if (($env{'request.role.adv'}) ||
10906: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10907: ($thisurl eq '/adm/navmaps')) {
10908: $okay=1;
10909: last;
10910: }
10911: }
10912: }
10913: }
10914: untie(%bighash);
10915: }
10916: return $okay;
10917: }
10918:
10919: # --------------------------------------------------------------- Clean-up symb
10920:
10921: sub symbclean {
10922: my $symb=shift;
10923: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10924: # remove version from map
10925: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10926:
10927: # remove version from URL
10928: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10929:
10930: # remove wrapper
10931:
10932: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10933: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10934: return $symb;
10935: }
10936:
10937: # ---------------------------------------------- Split symb to find map and url
10938:
10939: sub encode_symb {
10940: my ($map,$resid,$url)=@_;
10941: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10942: }
10943:
10944: sub decode_symb {
10945: my $symb=shift;
10946: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10947: my ($map,$resid,$url)=split(/___/,$symb);
10948: return (&fixversion($map),$resid,&fixversion($url));
10949: }
10950:
10951: sub fixversion {
10952: my $fn=shift;
10953: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10954: my %bighash;
10955: my $uri=&clutter($fn);
10956: my $key=$env{'request.course.id'}.'_'.$uri;
10957: # is this cached?
10958: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10959: if (defined($cached)) { return $result; }
10960: # unfortunately not cached, or expired
10961: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10962: &GDBM_READER(),0640)) {
10963: if ($bighash{'version_'.$uri}) {
10964: my $version=$bighash{'version_'.$uri};
10965: unless (($version eq 'mostrecent') ||
10966: ($version==&getversion($uri))) {
10967: $uri=~s/\.(\w+)$/\.$version\.$1/;
10968: }
10969: }
10970: untie %bighash;
10971: }
10972: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10973: }
10974:
10975: sub deversion {
10976: my $url=shift;
10977: $url=~s/\.\d+\.(\w+)$/\.$1/;
10978: return $url;
10979: }
10980:
10981: # ------------------------------------------------------ Return symb list entry
10982:
10983: sub symbread {
10984: my ($thisfn,$donotrecurse)=@_;
10985: my $cache_str='request.symbread.cached.'.$thisfn;
10986: if (defined($env{$cache_str})) { return $env{$cache_str}; }
10987: # no filename provided? try from environment
10988: unless ($thisfn) {
10989: if ($env{'request.symb'}) {
10990: return $env{$cache_str}=&symbclean($env{'request.symb'});
10991: }
10992: $thisfn=$env{'request.filename'};
10993: }
10994: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10995: # is that filename actually a symb? Verify, clean, and return
10996: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10997: if (&symbverify($thisfn,$1)) {
10998: return $env{$cache_str}=&symbclean($thisfn);
10999: }
11000: }
11001: $thisfn=declutter($thisfn);
11002: my %hash;
11003: my %bighash;
11004: my $syval='';
11005: if (($env{'request.course.fn'}) && ($thisfn)) {
11006: my $targetfn = $thisfn;
11007: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
11008: $targetfn = 'adm/wrapper/'.$thisfn;
11009: }
11010: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
11011: $targetfn=$1;
11012: }
11013: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11014: &GDBM_READER(),0640)) {
11015: $syval=$hash{$targetfn};
11016: untie(%hash);
11017: }
11018: # ---------------------------------------------------------- There was an entry
11019: if ($syval) {
11020: #unless ($syval=~/\_\d+$/) {
11021: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
11022: #&appenv({'request.ambiguous' => $thisfn});
11023: #return $env{$cache_str}='';
11024: #}
11025: #$syval.=$1;
11026: #}
11027: } else {
11028: # ------------------------------------------------------- Was not in symb table
11029: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11030: &GDBM_READER(),0640)) {
11031: # ---------------------------------------------- Get ID(s) for current resource
11032: my $ids=$bighash{'ids_'.&clutter($thisfn)};
11033: unless ($ids) {
11034: $ids=$bighash{'ids_/'.$thisfn};
11035: }
11036: unless ($ids) {
11037: # alias?
11038: $ids=$bighash{'mapalias_'.$thisfn};
11039: }
11040: if ($ids) {
11041: # ------------------------------------------------------------------- Has ID(s)
11042: my @possibilities=split(/\,/,$ids);
11043: if ($#possibilities==0) {
11044: # ----------------------------------------------- There is only one possibility
11045: my ($mapid,$resid)=split(/\./,$ids);
11046: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11047: $resid,$thisfn);
11048: } elsif (!$donotrecurse) {
11049: # ------------------------------------------ There is more than one possibility
11050: my $realpossible=0;
11051: foreach my $id (@possibilities) {
11052: my $file=$bighash{'src_'.$id};
11053: if (&allowed('bre',$file)) {
11054: my ($mapid,$resid)=split(/\./,$id);
11055: if ($bighash{'map_type_'.$mapid} ne 'page') {
11056: $realpossible++;
11057: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11058: $resid,$thisfn);
11059: }
11060: }
11061: }
11062: if ($realpossible!=1) { $syval=''; }
11063: } else {
11064: $syval='';
11065: }
11066: }
11067: untie(%bighash)
11068: }
11069: }
11070: if ($syval) {
11071: return $env{$cache_str}=$syval;
11072: }
11073: }
11074: &appenv({'request.ambiguous' => $thisfn});
11075: return $env{$cache_str}='';
11076: }
11077:
11078: # ---------------------------------------------------------- Return random seed
11079:
11080: sub numval {
11081: my $txt=shift;
11082: $txt=~tr/A-J/0-9/;
11083: $txt=~tr/a-j/0-9/;
11084: $txt=~tr/K-T/0-9/;
11085: $txt=~tr/k-t/0-9/;
11086: $txt=~tr/U-Z/0-5/;
11087: $txt=~tr/u-z/0-5/;
11088: $txt=~s/\D//g;
11089: if ($_64bit) { if ($txt > 2**32) { return -1; } }
11090: return int($txt);
11091: }
11092:
11093: sub numval2 {
11094: my $txt=shift;
11095: $txt=~tr/A-J/0-9/;
11096: $txt=~tr/a-j/0-9/;
11097: $txt=~tr/K-T/0-9/;
11098: $txt=~tr/k-t/0-9/;
11099: $txt=~tr/U-Z/0-5/;
11100: $txt=~tr/u-z/0-5/;
11101: $txt=~s/\D//g;
11102: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11103: my $total;
11104: foreach my $val (@txts) { $total+=$val; }
11105: if ($_64bit) { if ($total > 2**32) { return -1; } }
11106: return int($total);
11107: }
11108:
11109: sub numval3 {
11110: use integer;
11111: my $txt=shift;
11112: $txt=~tr/A-J/0-9/;
11113: $txt=~tr/a-j/0-9/;
11114: $txt=~tr/K-T/0-9/;
11115: $txt=~tr/k-t/0-9/;
11116: $txt=~tr/U-Z/0-5/;
11117: $txt=~tr/u-z/0-5/;
11118: $txt=~s/\D//g;
11119: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11120: my $total;
11121: foreach my $val (@txts) { $total+=$val; }
11122: if ($_64bit) { $total=(($total<<32)>>32); }
11123: return $total;
11124: }
11125:
11126: sub digest {
11127: my ($data)=@_;
11128: my $digest=&Digest::MD5::md5($data);
11129: my ($a,$b,$c,$d)=unpack("iiii",$digest);
11130: my ($e,$f);
11131: {
11132: use integer;
11133: $e=($a+$b);
11134: $f=($c+$d);
11135: if ($_64bit) {
11136: $e=(($e<<32)>>32);
11137: $f=(($f<<32)>>32);
11138: }
11139: }
11140: if (wantarray) {
11141: return ($e,$f);
11142: } else {
11143: my $g;
11144: {
11145: use integer;
11146: $g=($e+$f);
11147: if ($_64bit) {
11148: $g=(($g<<32)>>32);
11149: }
11150: }
11151: return $g;
11152: }
11153: }
11154:
11155: sub latest_rnd_algorithm_id {
11156: return '64bit5';
11157: }
11158:
11159: sub get_rand_alg {
11160: my ($courseid)=@_;
11161: if (!$courseid) { $courseid=(&whichuser())[1]; }
11162: if ($courseid) {
11163: return $env{"course.$courseid.rndseed"};
11164: }
11165: return &latest_rnd_algorithm_id();
11166: }
11167:
11168: sub validCODE {
11169: my ($CODE)=@_;
11170: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
11171: return 0;
11172: }
11173:
11174: sub getCODE {
11175: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
11176: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
11177: defined($Apache::lonhomework::parsing_a_task) ) &&
11178: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
11179: return $Apache::lonhomework::history{'resource.CODE'};
11180: }
11181: return undef;
11182: }
11183: #
11184: # Determines the random seed for a specific context:
11185: #
11186: # parameters:
11187: # symb - in course context the symb for the seed.
11188: # course_id - The course id of the form domain_coursenum.
11189: # domain - Domain for the user.
11190: # course - Course for the user.
11191: # cenv - environment of the course.
11192: #
11193: # NOTE:
11194: # All parameters are picked out of the environment if missing
11195: # or not defined.
11196: # If a symb cannot be determined the current time is used instead.
11197: #
11198: # For a given well defined symb, courside, domain, username,
11199: # and course environment, the seed is reproducible.
11200: #
11201: sub rndseed {
11202: my ($symb,$courseid,$domain,$username, $cenv)=@_;
11203: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
11204: if (!defined($symb)) {
11205: unless ($symb=$wsymb) { return time; }
11206: }
11207: if (!defined $courseid) {
11208: $courseid=$wcourseid;
11209: }
11210: if (!defined $domain) { $domain=$wdomain; }
11211: if (!defined $username) { $username=$wusername }
11212:
11213: my $which;
11214: if (defined($cenv->{'rndseed'})) {
11215: $which = $cenv->{'rndseed'};
11216: } else {
11217: $which =&get_rand_alg($courseid);
11218: }
11219: if (defined(&getCODE())) {
11220: if ($which eq '64bit5') {
11221: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
11222: } elsif ($which eq '64bit4') {
11223: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
11224: } else {
11225: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
11226: }
11227: } elsif ($which eq '64bit5') {
11228: return &rndseed_64bit5($symb,$courseid,$domain,$username);
11229: } elsif ($which eq '64bit4') {
11230: return &rndseed_64bit4($symb,$courseid,$domain,$username);
11231: } elsif ($which eq '64bit3') {
11232: return &rndseed_64bit3($symb,$courseid,$domain,$username);
11233: } elsif ($which eq '64bit2') {
11234: return &rndseed_64bit2($symb,$courseid,$domain,$username);
11235: } elsif ($which eq '64bit') {
11236: return &rndseed_64bit($symb,$courseid,$domain,$username);
11237: }
11238: return &rndseed_32bit($symb,$courseid,$domain,$username);
11239: }
11240:
11241: sub rndseed_32bit {
11242: my ($symb,$courseid,$domain,$username)=@_;
11243: {
11244: use integer;
11245: my $symbchck=unpack("%32C*",$symb) << 27;
11246: my $symbseed=numval($symb) << 22;
11247: my $namechck=unpack("%32C*",$username) << 17;
11248: my $nameseed=numval($username) << 12;
11249: my $domainseed=unpack("%32C*",$domain) << 7;
11250: my $courseseed=unpack("%32C*",$courseid);
11251: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11252: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11253: #&logthis("rndseed :$num:$symb");
11254: if ($_64bit) { $num=(($num<<32)>>32); }
11255: return $num;
11256: }
11257: }
11258:
11259: sub rndseed_64bit {
11260: my ($symb,$courseid,$domain,$username)=@_;
11261: {
11262: use integer;
11263: my $symbchck=unpack("%32S*",$symb) << 21;
11264: my $symbseed=numval($symb) << 10;
11265: my $namechck=unpack("%32S*",$username);
11266:
11267: my $nameseed=numval($username) << 21;
11268: my $domainseed=unpack("%32S*",$domain) << 10;
11269: my $courseseed=unpack("%32S*",$courseid);
11270:
11271: my $num1=$symbchck+$symbseed+$namechck;
11272: my $num2=$nameseed+$domainseed+$courseseed;
11273: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11274: #&logthis("rndseed :$num:$symb");
11275: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11276: return "$num1,$num2";
11277: }
11278: }
11279:
11280: sub rndseed_64bit2 {
11281: my ($symb,$courseid,$domain,$username)=@_;
11282: {
11283: use integer;
11284: # strings need to be an even # of cahracters long, it it is odd the
11285: # last characters gets thrown away
11286: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11287: my $symbseed=numval($symb) << 10;
11288: my $namechck=unpack("%32S*",$username.' ');
11289:
11290: my $nameseed=numval($username) << 21;
11291: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11292: my $courseseed=unpack("%32S*",$courseid.' ');
11293:
11294: my $num1=$symbchck+$symbseed+$namechck;
11295: my $num2=$nameseed+$domainseed+$courseseed;
11296: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11297: #&logthis("rndseed :$num:$symb");
11298: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11299: return "$num1,$num2";
11300: }
11301: }
11302:
11303: sub rndseed_64bit3 {
11304: my ($symb,$courseid,$domain,$username)=@_;
11305: {
11306: use integer;
11307: # strings need to be an even # of cahracters long, it it is odd the
11308: # last characters gets thrown away
11309: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11310: my $symbseed=numval2($symb) << 10;
11311: my $namechck=unpack("%32S*",$username.' ');
11312:
11313: my $nameseed=numval2($username) << 21;
11314: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11315: my $courseseed=unpack("%32S*",$courseid.' ');
11316:
11317: my $num1=$symbchck+$symbseed+$namechck;
11318: my $num2=$nameseed+$domainseed+$courseseed;
11319: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11320: #&logthis("rndseed :$num1:$num2:$_64bit");
11321: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11322:
11323: return "$num1:$num2";
11324: }
11325: }
11326:
11327: sub rndseed_64bit4 {
11328: my ($symb,$courseid,$domain,$username)=@_;
11329: {
11330: use integer;
11331: # strings need to be an even # of cahracters long, it it is odd the
11332: # last characters gets thrown away
11333: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11334: my $symbseed=numval3($symb) << 10;
11335: my $namechck=unpack("%32S*",$username.' ');
11336:
11337: my $nameseed=numval3($username) << 21;
11338: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11339: my $courseseed=unpack("%32S*",$courseid.' ');
11340:
11341: my $num1=$symbchck+$symbseed+$namechck;
11342: my $num2=$nameseed+$domainseed+$courseseed;
11343: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11344: #&logthis("rndseed :$num1:$num2:$_64bit");
11345: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11346:
11347: return "$num1:$num2";
11348: }
11349: }
11350:
11351: sub rndseed_64bit5 {
11352: my ($symb,$courseid,$domain,$username)=@_;
11353: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11354: return "$num1:$num2";
11355: }
11356:
11357: sub rndseed_CODE_64bit {
11358: my ($symb,$courseid,$domain,$username)=@_;
11359: {
11360: use integer;
11361: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11362: my $symbseed=numval2($symb);
11363: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11364: my $CODEseed=numval(&getCODE());
11365: my $courseseed=unpack("%32S*",$courseid.' ');
11366: my $num1=$symbseed+$CODEchck;
11367: my $num2=$CODEseed+$courseseed+$symbchck;
11368: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11369: #&logthis("rndseed :$num1:$num2:$symb");
11370: if ($_64bit) { $num1=(($num1<<32)>>32); }
11371: if ($_64bit) { $num2=(($num2<<32)>>32); }
11372: return "$num1:$num2";
11373: }
11374: }
11375:
11376: sub rndseed_CODE_64bit4 {
11377: my ($symb,$courseid,$domain,$username)=@_;
11378: {
11379: use integer;
11380: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11381: my $symbseed=numval3($symb);
11382: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11383: my $CODEseed=numval3(&getCODE());
11384: my $courseseed=unpack("%32S*",$courseid.' ');
11385: my $num1=$symbseed+$CODEchck;
11386: my $num2=$CODEseed+$courseseed+$symbchck;
11387: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11388: #&logthis("rndseed :$num1:$num2:$symb");
11389: if ($_64bit) { $num1=(($num1<<32)>>32); }
11390: if ($_64bit) { $num2=(($num2<<32)>>32); }
11391: return "$num1:$num2";
11392: }
11393: }
11394:
11395: sub rndseed_CODE_64bit5 {
11396: my ($symb,$courseid,$domain,$username)=@_;
11397: my $code = &getCODE();
11398: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11399: return "$num1:$num2";
11400: }
11401:
11402: sub setup_random_from_rndseed {
11403: my ($rndseed)=@_;
11404: if ($rndseed =~/([,:])/) {
11405: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
11406: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
11407: &Math::Random::random_set_seed_from_phrase($rndseed);
11408: } else {
11409: &Math::Random::random_set_seed($num1,$num2);
11410: }
11411: } else {
11412: &Math::Random::random_set_seed_from_phrase($rndseed);
11413: }
11414: }
11415:
11416: sub latest_receipt_algorithm_id {
11417: return 'receipt3';
11418: }
11419:
11420: sub recunique {
11421: my $fucourseid=shift;
11422: my $unique;
11423: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11424: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11425: $unique=$env{"course.$fucourseid.internal.encseed"};
11426: } else {
11427: $unique=$perlvar{'lonReceipt'};
11428: }
11429: return unpack("%32C*",$unique);
11430: }
11431:
11432: sub recprefix {
11433: my $fucourseid=shift;
11434: my $prefix;
11435: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11436: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11437: $prefix=$env{"course.$fucourseid.internal.encpref"};
11438: } else {
11439: $prefix=$perlvar{'lonHostID'};
11440: }
11441: return unpack("%32C*",$prefix);
11442: }
11443:
11444: sub ireceipt {
11445: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11446:
11447: my $return =&recprefix($fucourseid).'-';
11448:
11449: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11450: $env{'request.state'} eq 'construct') {
11451: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11452: return $return;
11453: }
11454:
11455: my $cuname=unpack("%32C*",$funame);
11456: my $cudom=unpack("%32C*",$fudom);
11457: my $cucourseid=unpack("%32C*",$fucourseid);
11458: my $cusymb=unpack("%32C*",$fusymb);
11459: my $cunique=&recunique($fucourseid);
11460: my $cpart=unpack("%32S*",$part);
11461: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11462:
11463: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11464:
11465: $return.= ($cunique%$cuname+
11466: $cunique%$cudom+
11467: $cusymb%$cuname+
11468: $cusymb%$cudom+
11469: $cucourseid%$cuname+
11470: $cucourseid%$cudom+
11471: $cpart%$cuname+
11472: $cpart%$cudom);
11473: } else {
11474: $return.= ($cunique%$cuname+
11475: $cunique%$cudom+
11476: $cusymb%$cuname+
11477: $cusymb%$cudom+
11478: $cucourseid%$cuname+
11479: $cucourseid%$cudom);
11480: }
11481: return $return;
11482: }
11483:
11484: sub receipt {
11485: my ($part)=@_;
11486: my ($symb,$courseid,$domain,$name) = &whichuser();
11487: return &ireceipt($name,$domain,$courseid,$symb,$part);
11488: }
11489:
11490: sub whichuser {
11491: my ($passedsymb)=@_;
11492: my ($symb,$courseid,$domain,$name,$publicuser);
11493: if (defined($env{'form.grade_symb'})) {
11494: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11495: my $allowed=&allowed('vgr',$tmp_courseid);
11496: if (!$allowed &&
11497: exists($env{'request.course.sec'}) &&
11498: $env{'request.course.sec'} !~ /^\s*$/) {
11499: $allowed=&allowed('vgr',$tmp_courseid.
11500: '/'.$env{'request.course.sec'});
11501: }
11502: if ($allowed) {
11503: ($symb)=&get_env_multiple('form.grade_symb');
11504: $courseid=$tmp_courseid;
11505: ($domain)=&get_env_multiple('form.grade_domain');
11506: ($name)=&get_env_multiple('form.grade_username');
11507: return ($symb,$courseid,$domain,$name,$publicuser);
11508: }
11509: }
11510: if (!$passedsymb) {
11511: $symb=&symbread();
11512: } else {
11513: $symb=$passedsymb;
11514: }
11515: $courseid=$env{'request.course.id'};
11516: $domain=$env{'user.domain'};
11517: $name=$env{'user.name'};
11518: if ($name eq 'public' && $domain eq 'public') {
11519: if (!defined($env{'form.username'})) {
11520: $env{'form.username'}.=time.rand(10000000);
11521: }
11522: $name.=$env{'form.username'};
11523: }
11524: return ($symb,$courseid,$domain,$name,$publicuser);
11525:
11526: }
11527:
11528: # ------------------------------------------------------------ Serves up a file
11529: # returns either the contents of the file or
11530: # -1 if the file doesn't exist
11531: #
11532: # if the target is a file that was uploaded via DOCS,
11533: # a check will be made to see if a current copy exists on the local server,
11534: # if it does this will be served, otherwise a copy will be retrieved from
11535: # the home server for the course and stored in /home/httpd/html/userfiles on
11536: # the local server.
11537:
11538: sub getfile {
11539: my ($file) = @_;
11540: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11541: &repcopy($file);
11542: return &readfile($file);
11543: }
11544:
11545: sub repcopy_userfile {
11546: my ($file)=@_;
11547: my $londocroot = $perlvar{'lonDocRoot'};
11548: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11549: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11550: my ($cdom,$cnum,$filename) =
11551: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11552: my $uri="/uploaded/$cdom/$cnum/$filename";
11553: if (-e "$file") {
11554: # we already have a local copy, check it out
11555: my @fileinfo = stat($file);
11556: my $rtncode;
11557: my $info;
11558: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11559: if ($lwpresp ne 'ok') {
11560: # there is no such file anymore, even though we had a local copy
11561: if ($rtncode eq '404') {
11562: unlink($file);
11563: }
11564: return -1;
11565: }
11566: if ($info < $fileinfo[9]) {
11567: # nice, the file we have is up-to-date, just say okay
11568: return 'ok';
11569: } else {
11570: # the file is outdated, get rid of it
11571: unlink($file);
11572: }
11573: }
11574: # one way or the other, at this point, we don't have the file
11575: # construct the correct path for the file
11576: my @parts = ($cdom,$cnum);
11577: if ($filename =~ m|^(.+)/[^/]+$|) {
11578: push @parts, split(/\//,$1);
11579: }
11580: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11581: foreach my $part (@parts) {
11582: $path .= '/'.$part;
11583: if (!-e $path) {
11584: mkdir($path,0770);
11585: }
11586: }
11587: # now the path exists for sure
11588: # get a user agent
11589: my $ua=new LWP::UserAgent;
11590: my $transferfile=$file.'.in.transfer';
11591: # FIXME: this should flock
11592: if (-e $transferfile) { return 'ok'; }
11593: my $request;
11594: $uri=~s/^\///;
11595: my $homeserver = &homeserver($cnum,$cdom);
11596: my $protocol = $protocol{$homeserver};
11597: $protocol = 'http' if ($protocol ne 'https');
11598: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11599: my $response=$ua->request($request,$transferfile);
11600: # did it work?
11601: if ($response->is_error()) {
11602: unlink($transferfile);
11603: &logthis("Userfile repcopy failed for $uri");
11604: return -1;
11605: }
11606: # worked, rename the transfer file
11607: rename($transferfile,$file);
11608: return 'ok';
11609: }
11610:
11611: sub tokenwrapper {
11612: my $uri=shift;
11613: $uri=~s|^https?\://([^/]+)||;
11614: $uri=~s|^/||;
11615: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11616: my $token=$1;
11617: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11618: if ($udom && $uname && $file) {
11619: $file=~s|(\?\.*)*$||;
11620: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11621: my $homeserver = &homeserver($uname,$udom);
11622: my $protocol = $protocol{$homeserver};
11623: $protocol = 'http' if ($protocol ne 'https');
11624: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11625: (($uri=~/\?/)?'&':'?').'token='.$token.
11626: '&tokenissued='.$perlvar{'lonHostID'};
11627: } else {
11628: return '/adm/notfound.html';
11629: }
11630: }
11631:
11632: # call with reqtype HEAD: get last modification time
11633: # call with reqtype GET: get the file contents
11634: # Do not call this with reqtype GET for large files! It loads everything into memory
11635: #
11636: sub getuploaded {
11637: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11638: $uri=~s/^\///;
11639: my $homeserver = &homeserver($cnum,$cdom);
11640: my $protocol = $protocol{$homeserver};
11641: $protocol = 'http' if ($protocol ne 'https');
11642: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11643: my $ua=new LWP::UserAgent;
11644: my $request=new HTTP::Request($reqtype,$uri);
11645: my $response=$ua->request($request);
11646: $$rtncode = $response->code;
11647: if (! $response->is_success()) {
11648: return 'failed';
11649: }
11650: if ($reqtype eq 'HEAD') {
11651: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11652: } elsif ($reqtype eq 'GET') {
11653: $$info = $response->content;
11654: }
11655: return 'ok';
11656: }
11657:
11658: sub readfile {
11659: my $file = shift;
11660: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11661: my $fh;
11662: open($fh,"<$file");
11663: my $a='';
11664: while (my $line = <$fh>) { $a .= $line; }
11665: return $a;
11666: }
11667:
11668: sub filelocation {
11669: my ($dir,$file) = @_;
11670: my $location;
11671: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11672:
11673: if ($file =~ m-^/adm/-) {
11674: $file=~s-^/adm/wrapper/-/-;
11675: $file=~s-^/adm/coursedocs/showdoc/-/-;
11676: }
11677:
11678: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11679: $location = $file;
11680: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11681: my ($udom,$uname,$filename)=
11682: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11683: my $home=&homeserver($uname,$udom);
11684: my $is_me=0;
11685: my @ids=¤t_machine_ids();
11686: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11687: if ($is_me) {
11688: $location=propath($udom,$uname).'/userfiles/'.$filename;
11689: } else {
11690: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11691: $udom.'/'.$uname.'/'.$filename;
11692: }
11693: } elsif ($file =~ m-^/adm/-) {
11694: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11695: } else {
11696: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11697: $file=~s:^/(res|priv)/:/:;
11698: my $space=$1;
11699: if ( !( $file =~ m:^/:) ) {
11700: $location = $dir. '/'.$file;
11701: } else {
11702: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11703: }
11704: }
11705: $location=~s://+:/:g; # remove duplicate /
11706: while ($location=~m{/\.\./}) {
11707: if ($location =~ m{/[^/]+/\.\./}) {
11708: $location=~ s{/[^/]+/\.\./}{/}g;
11709: } else {
11710: $location=~ s{/\.\./}{/}g;
11711: }
11712: } #remove dir/..
11713: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11714: return $location;
11715: }
11716:
11717: sub hreflocation {
11718: my ($dir,$file)=@_;
11719: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11720: $file=filelocation($dir,$file);
11721: } elsif ($file=~m-^/adm/-) {
11722: $file=~s-^/adm/wrapper/-/-;
11723: $file=~s-^/adm/coursedocs/showdoc/-/-;
11724: }
11725: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11726: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11727: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11728: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11729: {/uploaded/$1/$2/}x;
11730: }
11731: if ($file=~ m{^/userfiles/}) {
11732: $file =~ s{^/userfiles/}{/uploaded/};
11733: }
11734: return $file;
11735: }
11736:
11737:
11738:
11739:
11740:
11741: sub current_machine_domains {
11742: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11743: }
11744:
11745: sub machine_domains {
11746: my ($hostname) = @_;
11747: my @domains;
11748: my %hostname = &all_hostnames();
11749: while( my($id, $name) = each(%hostname)) {
11750: # &logthis("-$id-$name-$hostname-");
11751: if ($hostname eq $name) {
11752: push(@domains,&host_domain($id));
11753: }
11754: }
11755: return @domains;
11756: }
11757:
11758: sub current_machine_ids {
11759: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11760: }
11761:
11762: sub machine_ids {
11763: my ($hostname) = @_;
11764: $hostname ||= &hostname($perlvar{'lonHostID'});
11765: my @ids;
11766: my %name_to_host = &all_names();
11767: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11768: return @{ $name_to_host{$hostname} };
11769: }
11770: return;
11771: }
11772:
11773: sub additional_machine_domains {
11774: my @domains;
11775: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11776: while( my $line = <$fh>) {
11777: $line =~ s/\s//g;
11778: push(@domains,$line);
11779: }
11780: return @domains;
11781: }
11782:
11783: sub default_login_domain {
11784: my $domain = $perlvar{'lonDefDomain'};
11785: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11786: foreach my $posdom (¤t_machine_domains(),
11787: &additional_machine_domains()) {
11788: if (lc($posdom) eq lc($testdomain)) {
11789: $domain=$posdom;
11790: last;
11791: }
11792: }
11793: return $domain;
11794: }
11795:
11796: # ------------------------------------------------------------- Declutters URLs
11797:
11798: sub declutter {
11799: my $thisfn=shift;
11800: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11801: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
11802: $thisfn=~s{^/home/httpd/html}{};
11803: }
11804: $thisfn=~s/^\///;
11805: $thisfn=~s|^adm/wrapper/||;
11806: $thisfn=~s|^adm/coursedocs/showdoc/||;
11807: $thisfn=~s/^res\///;
11808: $thisfn=~s/^priv\///;
11809: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11810: $thisfn=~s/\?.+$//;
11811: }
11812: return $thisfn;
11813: }
11814:
11815: # ------------------------------------------------------------- Clutter up URLs
11816:
11817: sub clutter {
11818: my $thisfn='/'.&declutter(shift);
11819: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11820: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11821: $thisfn='/res'.$thisfn;
11822: }
11823: if ($thisfn !~m|^/adm|) {
11824: if ($thisfn =~ m|^/ext/|) {
11825: $thisfn='/adm/wrapper'.$thisfn;
11826: } else {
11827: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11828: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11829: if ($embstyle eq 'ssi'
11830: || ($embstyle eq 'hdn')
11831: || ($embstyle eq 'rat')
11832: || ($embstyle eq 'prv')
11833: || ($embstyle eq 'ign')) {
11834: #do nothing with these
11835: } elsif (($embstyle eq 'img')
11836: || ($embstyle eq 'emb')
11837: || ($embstyle eq 'wrp')) {
11838: $thisfn='/adm/wrapper'.$thisfn;
11839: } elsif ($embstyle eq 'unk'
11840: && $thisfn!~/\.(sequence|page)$/) {
11841: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11842: } else {
11843: # &logthis("Got a blank emb style");
11844: }
11845: }
11846: }
11847: return $thisfn;
11848: }
11849:
11850: sub clutter_with_no_wrapper {
11851: my $uri = &clutter(shift);
11852: if ($uri =~ m-^/adm/-) {
11853: $uri =~ s-^/adm/wrapper/-/-;
11854: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11855: }
11856: return $uri;
11857: }
11858:
11859: sub freeze_escape {
11860: my ($value)=@_;
11861: if (ref($value)) {
11862: $value=&nfreeze($value);
11863: return '__FROZEN__'.&escape($value);
11864: }
11865: return &escape($value);
11866: }
11867:
11868:
11869: sub thaw_unescape {
11870: my ($value)=@_;
11871: if ($value =~ /^__FROZEN__/) {
11872: substr($value,0,10,undef);
11873: $value=&unescape($value);
11874: return &thaw($value);
11875: }
11876: return &unescape($value);
11877: }
11878:
11879: sub correct_line_ends {
11880: my ($result)=@_;
11881: $$result =~s/\r\n/\n/mg;
11882: $$result =~s/\r/\n/mg;
11883: }
11884: # ================================================================ Main Program
11885:
11886: sub goodbye {
11887: &logthis("Starting Shut down");
11888: #not converted to using infrastruture and probably shouldn't be
11889: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11890: #converted
11891: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11892: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11893: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11894: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11895: #1.1 only
11896: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11897: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11898: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11899: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11900: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11901: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11902: &logthis(sprintf("%-20s is %s",'hits',$hits));
11903: &flushcourselogs();
11904: &logthis("Shutting down");
11905: }
11906:
11907: sub get_dns {
11908: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11909: if (!$ignore_cache) {
11910: my ($content,$cached)=
11911: &Apache::lonnet::is_cached_new('dns',$url);
11912: if ($cached) {
11913: &$func($content,$hashref);
11914: return;
11915: }
11916: }
11917:
11918: my %alldns;
11919: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11920: foreach my $dns (<$config>) {
11921: next if ($dns !~ /^\^(\S*)/x);
11922: my $line = $1;
11923: my ($host,$protocol) = split(/:/,$line);
11924: if ($protocol ne 'https') {
11925: $protocol = 'http';
11926: }
11927: $alldns{$host} = $protocol;
11928: }
11929: while (%alldns) {
11930: my ($dns) = sort { $b cmp $a } keys(%alldns);
11931: my $ua=new LWP::UserAgent;
11932: $ua->timeout(30);
11933: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11934: my $response=$ua->request($request);
11935: delete($alldns{$dns});
11936: next if ($response->is_error());
11937: my @content = split("\n",$response->content);
11938: unless ($nocache) {
11939: &do_cache_new('dns',$url,\@content,30*24*60*60);
11940: }
11941: &$func(\@content,$hashref);
11942: return;
11943: }
11944: close($config);
11945: my $which = (split('/',$url))[3];
11946: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11947: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11948: my @content = <$config>;
11949: &$func(\@content,$hashref);
11950: return;
11951: }
11952:
11953: # ------------------------------------------------------Get DNS checksums file
11954: sub parse_dns_checksums_tab {
11955: my ($lines,$hashref) = @_;
11956: my $lonhost = $perlvar{'lonHostID'};
11957: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
11958: my $loncaparev = &get_server_loncaparev($machine_dom);
11959: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
11960: my $webconfdir = '/etc/httpd/conf';
11961: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
11962: $webconfdir = '/etc/apache2';
11963: } elsif ($distro =~ /^sles(\d+)$/) {
11964: if ($1 >= 10) {
11965: $webconfdir = '/etc/apache2';
11966: }
11967: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
11968: if ($1 >= 10.0) {
11969: $webconfdir = '/etc/apache2';
11970: }
11971: }
11972: my ($release,$timestamp) = split(/\-/,$loncaparev);
11973: my (%chksum,%revnum);
11974: if (ref($lines) eq 'ARRAY') {
11975: chomp(@{$lines});
11976: my $version = shift(@{$lines});
11977: if ($version eq $release) {
11978: foreach my $line (@{$lines}) {
11979: my ($file,$version,$shasum) = split(/,/,$line);
11980: if ($file =~ m{^/etc/httpd/conf}) {
11981: if ($webconfdir eq '/etc/apache2') {
11982: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
11983: }
11984: }
11985: $chksum{$file} = $shasum;
11986: $revnum{$file} = $version;
11987: }
11988: if (ref($hashref) eq 'HASH') {
11989: %{$hashref} = (
11990: sums => \%chksum,
11991: versions => \%revnum,
11992: );
11993: }
11994: }
11995: }
11996: return;
11997: }
11998:
11999: sub fetch_dns_checksums {
12000: my %checksums;
12001: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
12002: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
12003: my ($release,$timestamp) = split(/\-/,$loncaparev);
12004: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
12005: \%checksums);
12006: return \%checksums;
12007: }
12008:
12009: # ------------------------------------------------------------ Read domain file
12010: {
12011: my $loaded;
12012: my %domain;
12013:
12014: sub parse_domain_tab {
12015: my ($lines) = @_;
12016: foreach my $line (@$lines) {
12017: next if ($line =~ /^(\#|\s*$ )/x);
12018:
12019: chomp($line);
12020: my ($name,@elements) = split(/:/,$line,9);
12021: my %this_domain;
12022: foreach my $field ('description', 'auth_def', 'auth_arg_def',
12023: 'lang_def', 'city', 'longi', 'lati',
12024: 'primary') {
12025: $this_domain{$field} = shift(@elements);
12026: }
12027: $domain{$name} = \%this_domain;
12028: }
12029: }
12030:
12031: sub reset_domain_info {
12032: undef($loaded);
12033: undef(%domain);
12034: }
12035:
12036: sub load_domain_tab {
12037: my ($ignore_cache) = @_;
12038: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
12039: my $fh;
12040: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
12041: my @lines = <$fh>;
12042: &parse_domain_tab(\@lines);
12043: }
12044: close($fh);
12045: $loaded = 1;
12046: }
12047:
12048: sub domain {
12049: &load_domain_tab() if (!$loaded);
12050:
12051: my ($name,$what) = @_;
12052: return if ( !exists($domain{$name}) );
12053:
12054: if (!$what) {
12055: return $domain{$name}{'description'};
12056: }
12057: return $domain{$name}{$what};
12058: }
12059:
12060: sub domain_info {
12061: &load_domain_tab() if (!$loaded);
12062: return %domain;
12063: }
12064:
12065: }
12066:
12067:
12068: # ------------------------------------------------------------- Read hosts file
12069: {
12070: my %hostname;
12071: my %hostdom;
12072: my %libserv;
12073: my $loaded;
12074: my %name_to_host;
12075: my %internetdom;
12076: my %LC_dns_serv;
12077:
12078: sub parse_hosts_tab {
12079: my ($file) = @_;
12080: foreach my $configline (@$file) {
12081: next if ($configline =~ /^(\#|\s*$ )/x);
12082: chomp($configline);
12083: if ($configline =~ /^\^/) {
12084: if ($configline =~ /^\^([\w.\-]+)/) {
12085: $LC_dns_serv{$1} = 1;
12086: }
12087: next;
12088: }
12089: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
12090: $name=~s/\s//g;
12091: if ($id && $domain && $role && $name) {
12092: $hostname{$id}=$name;
12093: push(@{$name_to_host{$name}}, $id);
12094: $hostdom{$id}=$domain;
12095: if ($role eq 'library') { $libserv{$id}=$name; }
12096: if (defined($protocol)) {
12097: if ($protocol eq 'https') {
12098: $protocol{$id} = $protocol;
12099: } else {
12100: $protocol{$id} = 'http';
12101: }
12102: } else {
12103: $protocol{$id} = 'http';
12104: }
12105: if (defined($intdom)) {
12106: $internetdom{$id} = $intdom;
12107: }
12108: }
12109: }
12110: }
12111:
12112: sub reset_hosts_info {
12113: &purge_remembered();
12114: &reset_domain_info();
12115: &reset_hosts_ip_info();
12116: undef(%name_to_host);
12117: undef(%hostname);
12118: undef(%hostdom);
12119: undef(%libserv);
12120: undef($loaded);
12121: }
12122:
12123: sub load_hosts_tab {
12124: my ($ignore_cache) = @_;
12125: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
12126: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12127: my @config = <$config>;
12128: &parse_hosts_tab(\@config);
12129: close($config);
12130: $loaded=1;
12131: }
12132:
12133: sub hostname {
12134: &load_hosts_tab() if (!$loaded);
12135:
12136: my ($lonid) = @_;
12137: return $hostname{$lonid};
12138: }
12139:
12140: sub all_hostnames {
12141: &load_hosts_tab() if (!$loaded);
12142:
12143: return %hostname;
12144: }
12145:
12146: sub all_names {
12147: &load_hosts_tab() if (!$loaded);
12148:
12149: return %name_to_host;
12150: }
12151:
12152: sub all_host_domain {
12153: &load_hosts_tab() if (!$loaded);
12154: return %hostdom;
12155: }
12156:
12157: sub is_library {
12158: &load_hosts_tab() if (!$loaded);
12159:
12160: return exists($libserv{$_[0]});
12161: }
12162:
12163: sub all_library {
12164: &load_hosts_tab() if (!$loaded);
12165:
12166: return %libserv;
12167: }
12168:
12169: sub unique_library {
12170: #2x reverse removes all hostnames that appear more than once
12171: my %unique = reverse &all_library();
12172: return reverse %unique;
12173: }
12174:
12175: sub get_servers {
12176: &load_hosts_tab() if (!$loaded);
12177:
12178: my ($domain,$type) = @_;
12179: my %possible_hosts = ($type eq 'library') ? %libserv
12180: : %hostname;
12181: my %result;
12182: if (ref($domain) eq 'ARRAY') {
12183: while ( my ($host,$hostname) = each(%possible_hosts)) {
12184: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
12185: $result{$host} = $hostname;
12186: }
12187: }
12188: } else {
12189: while ( my ($host,$hostname) = each(%possible_hosts)) {
12190: if ($hostdom{$host} eq $domain) {
12191: $result{$host} = $hostname;
12192: }
12193: }
12194: }
12195: return %result;
12196: }
12197:
12198: sub get_unique_servers {
12199: my %unique = reverse &get_servers(@_);
12200: return reverse %unique;
12201: }
12202:
12203: sub host_domain {
12204: &load_hosts_tab() if (!$loaded);
12205:
12206: my ($lonid) = @_;
12207: return $hostdom{$lonid};
12208: }
12209:
12210: sub all_domains {
12211: &load_hosts_tab() if (!$loaded);
12212:
12213: my %seen;
12214: my @uniq = grep(!$seen{$_}++, values(%hostdom));
12215: return @uniq;
12216: }
12217:
12218: sub internet_dom {
12219: &load_hosts_tab() if (!$loaded);
12220:
12221: my ($lonid) = @_;
12222: return $internetdom{$lonid};
12223: }
12224:
12225: sub is_LC_dns {
12226: &load_hosts_tab() if (!$loaded);
12227:
12228: my ($hostname) = @_;
12229: return exists($LC_dns_serv{$hostname});
12230: }
12231:
12232: }
12233:
12234: {
12235: my %iphost;
12236: my %name_to_ip;
12237: my %lonid_to_ip;
12238:
12239: sub get_hosts_from_ip {
12240: my ($ip) = @_;
12241: my %iphosts = &get_iphost();
12242: if (ref($iphosts{$ip})) {
12243: return @{$iphosts{$ip}};
12244: }
12245: return;
12246: }
12247:
12248: sub reset_hosts_ip_info {
12249: undef(%iphost);
12250: undef(%name_to_ip);
12251: undef(%lonid_to_ip);
12252: }
12253:
12254: sub get_host_ip {
12255: my ($lonid) = @_;
12256: if (exists($lonid_to_ip{$lonid})) {
12257: return $lonid_to_ip{$lonid};
12258: }
12259: my $name=&hostname($lonid);
12260: my $ip = gethostbyname($name);
12261: return if (!$ip || length($ip) ne 4);
12262: $ip=inet_ntoa($ip);
12263: $name_to_ip{$name} = $ip;
12264: $lonid_to_ip{$lonid} = $ip;
12265: return $ip;
12266: }
12267:
12268: sub get_iphost {
12269: my ($ignore_cache) = @_;
12270:
12271: if (!$ignore_cache) {
12272: if (%iphost) {
12273: return %iphost;
12274: }
12275: my ($ip_info,$cached)=
12276: &Apache::lonnet::is_cached_new('iphost','iphost');
12277: if ($cached) {
12278: %iphost = %{$ip_info->[0]};
12279: %name_to_ip = %{$ip_info->[1]};
12280: %lonid_to_ip = %{$ip_info->[2]};
12281: return %iphost;
12282: }
12283: }
12284:
12285: # get yesterday's info for fallback
12286: my %old_name_to_ip;
12287: my ($ip_info,$cached)=
12288: &Apache::lonnet::is_cached_new('iphost','iphost');
12289: if ($cached) {
12290: %old_name_to_ip = %{$ip_info->[1]};
12291: }
12292:
12293: my %name_to_host = &all_names();
12294: foreach my $name (keys(%name_to_host)) {
12295: my $ip;
12296: if (!exists($name_to_ip{$name})) {
12297: $ip = gethostbyname($name);
12298: if (!$ip || length($ip) ne 4) {
12299: if (defined($old_name_to_ip{$name})) {
12300: $ip = $old_name_to_ip{$name};
12301: &logthis("Can't find $name defaulting to old $ip");
12302: } else {
12303: &logthis("Name $name no IP found");
12304: next;
12305: }
12306: } else {
12307: $ip=inet_ntoa($ip);
12308: }
12309: $name_to_ip{$name} = $ip;
12310: } else {
12311: $ip = $name_to_ip{$name};
12312: }
12313: foreach my $id (@{ $name_to_host{$name} }) {
12314: $lonid_to_ip{$id} = $ip;
12315: }
12316: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12317: }
12318: &do_cache_new('iphost','iphost',
12319: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12320: 48*60*60);
12321:
12322: return %iphost;
12323: }
12324:
12325: #
12326: # Given a DNS returns the loncapa host name for that DNS
12327: #
12328: sub host_from_dns {
12329: my ($dns) = @_;
12330: my @hosts;
12331: my $ip;
12332:
12333: if (exists($name_to_ip{$dns})) {
12334: $ip = $name_to_ip{$dns};
12335: }
12336: if (!$ip) {
12337: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12338: if (length($ip) == 4) {
12339: $ip = &IO::Socket::inet_ntoa($ip);
12340: }
12341: }
12342: if ($ip) {
12343: @hosts = get_hosts_from_ip($ip);
12344: return $hosts[0];
12345: }
12346: return undef;
12347: }
12348:
12349: sub get_internet_names {
12350: my ($lonid) = @_;
12351: return if ($lonid eq '');
12352: my ($idnref,$cached)=
12353: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12354: if ($cached) {
12355: return $idnref;
12356: }
12357: my $ip = &get_host_ip($lonid);
12358: my @hosts = &get_hosts_from_ip($ip);
12359: my %iphost = &get_iphost();
12360: my (@idns,%seen);
12361: foreach my $id (@hosts) {
12362: my $dom = &host_domain($id);
12363: my $prim_id = &domain($dom,'primary');
12364: my $prim_ip = &get_host_ip($prim_id);
12365: next if ($seen{$prim_ip});
12366: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12367: foreach my $id (@{$iphost{$prim_ip}}) {
12368: my $intdom = &internet_dom($id);
12369: unless (grep(/^\Q$intdom\E$/,@idns)) {
12370: push(@idns,$intdom);
12371: }
12372: }
12373: }
12374: $seen{$prim_ip} = 1;
12375: }
12376: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12377: }
12378:
12379: }
12380:
12381: sub all_loncaparevs {
12382: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
12383: }
12384:
12385: # ------------------------------------------------------- Read loncaparev table
12386: {
12387: sub load_loncaparevs {
12388: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12389: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12390: while (my $configline=<$config>) {
12391: chomp($configline);
12392: my ($hostid,$loncaparev)=split(/:/,$configline);
12393: $loncaparevs{$hostid}=$loncaparev;
12394: }
12395: close($config);
12396: }
12397: }
12398: }
12399: }
12400:
12401: # ----------------------------------------------------- Read serverhostID table
12402: {
12403: sub load_serverhomeIDs {
12404: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12405: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12406: while (my $configline=<$config>) {
12407: chomp($configline);
12408: my ($name,$id)=split(/:/,$configline);
12409: $serverhomeIDs{$name}=$id;
12410: }
12411: close($config);
12412: }
12413: }
12414: }
12415: }
12416:
12417:
12418: BEGIN {
12419:
12420: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12421: unless ($readit) {
12422: {
12423: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12424: %perlvar = (%perlvar,%{$configvars});
12425: }
12426:
12427:
12428: # ------------------------------------------------------ Read spare server file
12429: {
12430: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12431:
12432: while (my $configline=<$config>) {
12433: chomp($configline);
12434: if ($configline) {
12435: my ($host,$type) = split(':',$configline,2);
12436: if (!defined($type) || $type eq '') { $type = 'default' };
12437: push(@{ $spareid{$type} }, $host);
12438: }
12439: }
12440: close($config);
12441: }
12442: # ------------------------------------------------------------ Read permissions
12443: {
12444: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12445:
12446: while (my $configline=<$config>) {
12447: chomp($configline);
12448: if ($configline) {
12449: my ($role,$perm)=split(/ /,$configline);
12450: if ($perm ne '') { $pr{$role}=$perm; }
12451: }
12452: }
12453: close($config);
12454: }
12455:
12456: # -------------------------------------------- Read plain texts for permissions
12457: {
12458: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12459:
12460: while (my $configline=<$config>) {
12461: chomp($configline);
12462: if ($configline) {
12463: my ($short,@plain)=split(/:/,$configline);
12464: %{$prp{$short}} = ();
12465: if (@plain > 0) {
12466: $prp{$short}{'std'} = $plain[0];
12467: for (my $i=1; $i<@plain; $i++) {
12468: $prp{$short}{'alt'.$i} = $plain[$i];
12469: }
12470: }
12471: }
12472: }
12473: close($config);
12474: }
12475:
12476: # ---------------------------------------------------------- Read package table
12477: {
12478: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12479:
12480: while (my $configline=<$config>) {
12481: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12482: chomp($configline);
12483: my ($short,$plain)=split(/:/,$configline);
12484: my ($pack,$name)=split(/\&/,$short);
12485: if ($plain ne '') {
12486: $packagetab{$pack.'&'.$name.'&name'}=$name;
12487: $packagetab{$short}=$plain;
12488: }
12489: }
12490: close($config);
12491: }
12492:
12493: # --------------------------------------------------------- Read loncaparev table
12494:
12495: &load_loncaparevs();
12496:
12497: # ------------------------------------------------------- Read serverhostID table
12498:
12499: &load_serverhomeIDs();
12500:
12501: # ---------------------------------------------------------- Read releaseslist XML
12502: {
12503: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12504: if (-e $file) {
12505: my $parser = HTML::LCParser->new($file);
12506: while (my $token = $parser->get_token()) {
12507: if ($token->[0] eq 'S') {
12508: my $item = $token->[1];
12509: my $name = $token->[2]{'name'};
12510: my $value = $token->[2]{'value'};
12511: if ($item ne '' && $name ne '' && $value ne '') {
12512: my $release = $parser->get_text();
12513: $release =~ s/(^\s*|\s*$ )//gx;
12514: $needsrelease{$item.':'.$name.':'.$value} = $release;
12515: }
12516: }
12517: }
12518: }
12519: }
12520:
12521: # ---------------------------------------------------------- Read managers table
12522: {
12523: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12524: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12525: while (my $configline=<$config>) {
12526: chomp($configline);
12527: next if ($configline =~ /^\#/);
12528: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12529: $managerstab{$configline} = 1;
12530: }
12531: }
12532: close($config);
12533: }
12534: }
12535: }
12536:
12537: # ------------- set up temporary directory
12538: {
12539: $tmpdir = LONCAPA::tempdir();
12540:
12541: }
12542:
12543: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12544: 'compress_threshold'=> 20_000,
12545: });
12546:
12547: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12548: $dumpcount=0;
12549: $locknum=0;
12550:
12551: &logtouch();
12552: &logthis('<font color="yellow">INFO: Read configuration</font>');
12553: $readit=1;
12554: {
12555: use integer;
12556: my $test=(2**32)+1;
12557: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12558: &logthis(" Detected 64bit platform ($_64bit)");
12559: }
12560: }
12561: }
12562:
12563: 1;
12564: __END__
12565:
12566: =pod
12567:
12568: =head1 NAME
12569:
12570: Apache::lonnet - Subroutines to ask questions about things in the network.
12571:
12572: =head1 SYNOPSIS
12573:
12574: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12575:
12576: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12577:
12578: Common parameters:
12579:
12580: =over 4
12581:
12582: =item *
12583:
12584: $uname : an internal username (if $cname expecting a course Id specifically)
12585:
12586: =item *
12587:
12588: $udom : a domain (if $cdom expecting a course's domain specifically)
12589:
12590: =item *
12591:
12592: $symb : a resource instance identifier
12593:
12594: =item *
12595:
12596: $namespace : the name of a .db file that contains the data needed or
12597: being set.
12598:
12599: =back
12600:
12601: =head1 OVERVIEW
12602:
12603: lonnet provides subroutines which interact with the
12604: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12605: about classes, users, and resources.
12606:
12607: For many of these objects you can also use this to store data about
12608: them or modify them in various ways.
12609:
12610: =head2 Symbs
12611:
12612: To identify a specific instance of a resource, LON-CAPA uses symbols
12613: or "symbs"X<symb>. These identifiers are built from the URL of the
12614: map, the resource number of the resource in the map, and the URL of
12615: the resource itself. The latter is somewhat redundant, but might help
12616: if maps change.
12617:
12618: An example is
12619:
12620: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12621:
12622: The respective map entry is
12623:
12624: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12625: title="Problem 2">
12626: </resource>
12627:
12628: Symbs are used by the random number generator, as well as to store and
12629: restore data specific to a certain instance of for example a problem.
12630:
12631: =head2 Storing And Retrieving Data
12632:
12633: X<store()>X<cstore()>X<restore()>Three of the most important functions
12634: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12635: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12636: is is the non-critical message twin of cstore. These functions are for
12637: handlers to store a perl hash to a user's permanent data space in an
12638: easy manner, and to retrieve it again on another call. It is expected
12639: that a handler would use this once at the beginning to retrieve data,
12640: and then again once at the end to send only the new data back.
12641:
12642: The data is stored in the user's data directory on the user's
12643: homeserver under the ID of the course.
12644:
12645: The hash that is returned by restore will have all of the previous
12646: value for all of the elements of the hash.
12647:
12648: Example:
12649:
12650: #creating a hash
12651: my %hash;
12652: $hash{'foo'}='bar';
12653:
12654: #storing it
12655: &Apache::lonnet::cstore(\%hash);
12656:
12657: #changing a value
12658: $hash{'foo'}='notbar';
12659:
12660: #adding a new value
12661: $hash{'bar'}='foo';
12662: &Apache::lonnet::cstore(\%hash);
12663:
12664: #retrieving the hash
12665: my %history=&Apache::lonnet::restore();
12666:
12667: #print the hash
12668: foreach my $key (sort(keys(%history))) {
12669: print("\%history{$key} = $history{$key}");
12670: }
12671:
12672: Will print out:
12673:
12674: %history{1:foo} = bar
12675: %history{1:keys} = foo:timestamp
12676: %history{1:timestamp} = 990455579
12677: %history{2:bar} = foo
12678: %history{2:foo} = notbar
12679: %history{2:keys} = foo:bar:timestamp
12680: %history{2:timestamp} = 990455580
12681: %history{bar} = foo
12682: %history{foo} = notbar
12683: %history{timestamp} = 990455580
12684: %history{version} = 2
12685:
12686: Note that the special hash entries C<keys>, C<version> and
12687: C<timestamp> were added to the hash. C<version> will be equal to the
12688: total number of versions of the data that have been stored. The
12689: C<timestamp> attribute will be the UNIX time the hash was
12690: stored. C<keys> is available in every historical section to list which
12691: keys were added or changed at a specific historical revision of a
12692: hash.
12693:
12694: B<Warning>: do not store the hash that restore returns directly. This
12695: will cause a mess since it will restore the historical keys as if the
12696: were new keys. I.E. 1:foo will become 1:1:foo etc.
12697:
12698: Calling convention:
12699:
12700: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
12701: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname);
12702:
12703: For more detailed information, see lonnet specific documentation.
12704:
12705: =head1 RETURN MESSAGES
12706:
12707: =over 4
12708:
12709: =item * B<con_lost>: unable to contact remote host
12710:
12711: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12712: when the connection is brought back up
12713:
12714: =item * B<con_failed>: unable to contact remote host and unable to save message
12715: for later delivery
12716:
12717: =item * B<error:>: an error a occurred, a description of the error follows the :
12718:
12719: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12720: that was requested
12721:
12722: =back
12723:
12724: =head1 PUBLIC SUBROUTINES
12725:
12726: =head2 Session Environment Functions
12727:
12728: =over 4
12729:
12730: =item *
12731: X<appenv()>
12732: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12733: the user envirnoment file, and will be restored for each access this
12734: user makes during this session, also modifies the %env for the current
12735: process. Optional rolesarrayref - if defined contains a reference to an array
12736: of roles which are exempt from the restriction on modifying user.role entries
12737: in the user's environment.db and in %env.
12738:
12739: =item *
12740: X<delenv()>
12741: B<delenv($delthis,$regexp)>: removes all items from the session
12742: environment file that begin with $delthis. If the
12743: optional second arg - $regexp - is true, $delthis is treated as a
12744: regular expression, otherwise \Q$delthis\E is used.
12745: The values are also deleted from the current processes %env.
12746:
12747: =item * get_env_multiple($name)
12748:
12749: gets $name from the %env hash, it seemlessly handles the cases where multiple
12750: values may be defined and end up as an array ref.
12751:
12752: returns an array of values
12753:
12754: =back
12755:
12756: =head2 User Information
12757:
12758: =over 4
12759:
12760: =item *
12761: X<queryauthenticate()>
12762: B<queryauthenticate($uname,$udom)>: try to determine user's current
12763: authentication scheme
12764:
12765: =item *
12766: X<authenticate()>
12767: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12768: authenticate user from domain's lib servers (first use the current
12769: one). C<$upass> should be the users password.
12770: $checkdefauth is optional (value is 1 if a check should be made to
12771: authenticate user using default authentication method, and allow
12772: account creation if username does not have account in the domain).
12773: $clientcancheckhost is optional (value is 1 if checking whether the
12774: server can host will occur on the client side in lonauth.pm).
12775:
12776: =item *
12777: X<homeserver()>
12778: B<homeserver($uname,$udom)>: find the server which has
12779: the user's directory and files (there must be only one), this caches
12780: the answer, and also caches if there is a borken connection.
12781:
12782: =item *
12783: X<idget()>
12784: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12785: (IDs are a unique resource in a domain, there must be only 1 ID per
12786: username, and only 1 username per ID in a specific domain) (returns
12787: hash: id=>name,id=>name)
12788:
12789: =item *
12790: X<idrget()>
12791: B<idrget($udom,@unames)>: find the IDs behind a list of
12792: usernames (returns hash: name=>id,name=>id)
12793:
12794: =item *
12795: X<idput()>
12796: B<idput($udom,%ids)>: store away a list of names and associated IDs
12797:
12798: =item *
12799: X<rolesinit()>
12800: B<rolesinit($udom,$username)>: get user privileges.
12801: returns user role, first access and timer interval hashes
12802:
12803: =item *
12804: X<privileged()>
12805: B<privileged($username,$domain)>: returns a true if user has a
12806: privileged and active role (i.e. su or dc), false otherwise.
12807:
12808: =item *
12809: X<getsection()>
12810: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12811: course $cname, return section name/number or '' for "not in course"
12812: and '-1' for "no section"
12813:
12814: =item *
12815: X<userenvironment()>
12816: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12817: passed in @what from the requested user's environment, returns a hash
12818:
12819: =item *
12820: X<userlog_query()>
12821: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12822: activity.log file. %filters defines filters applied when parsing the
12823: log file. These can be start or end timestamps, or the type of action
12824: - log to look for Login or Logout events, check for Checkin or
12825: Checkout, role for role selection. The response is in the form
12826: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12827: escaped strings of the action recorded in the activity.log file.
12828:
12829: =back
12830:
12831: =head2 User Roles
12832:
12833: =over 4
12834:
12835: =item *
12836:
12837: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12838: F: full access
12839: U,I,K: authentication modes (cxx only)
12840: '': forbidden
12841: 1: user needs to choose course
12842: 2: browse allowed
12843: A: passphrase authentication needed
12844:
12845: =item *
12846:
12847: constructaccess($url,$setpriv) : check for access to construction space URL
12848:
12849: See if the owner domain and name in the URL match those in the
12850: expected environment. If so, return three element list
12851: ($ownername,$ownerdomain,$ownerhome).
12852:
12853: Otherwise return the null string.
12854:
12855: If second argument 'setpriv' is true, it assigns the privileges,
12856: and returns the same three element list, unless the owner has
12857: blocked "ad hoc" Domain Coordinator access to the Author Space,
12858: in which case the null string is returned.
12859:
12860: =item *
12861:
12862: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12863: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12864: and course level
12865:
12866: =item *
12867:
12868: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12869: (rolesplain.tab); plain text explanation of a user role term.
12870: $type is Course (default) or Community.
12871: If $forcedefault evaluates to true, text returned will be default
12872: text for $type. Otherwise, if this is a course, the text returned
12873: will be a custom name for the role (if defined in the course's
12874: environment). If no custom name is defined the default is returned.
12875:
12876: =item *
12877:
12878: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
12879: All arguments are optional. Returns a hash of a roles, either for
12880: co-author/assistant author roles for a user's Construction Space
12881: (default), or if $context is 'userroles', roles for the user himself,
12882: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12883: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12884: For each key, value is set to colon-separated start and end times for
12885: the role. If no username and domain are specified, will default to
12886: current user/domain. Types, roles, and roledoms are references to arrays
12887: of role statuses (active, future or previous), roles
12888: (e.g., cc,in, st etc.) and domains of the roles which can be used
12889: to restrict the list of roles reported. If no array ref is
12890: provided for types, will default to return only active roles.
12891:
12892: =item *
12893:
12894: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12895: user: $uname:$udom has a role in the course: $cdom_$cnum.
12896:
12897: Additional optional arguments are: $type (if role checking is to be restricted
12898: to certain user status types -- previous (expired roles), active (currently
12899: available roles) or future (roles available in the future), and
12900: $hideprivileged -- if true will not report course roles for users who
12901: have active Domain Coordinator role in course's domain or in additional
12902: domains (specified in 'Domains to check for privileged users' in course
12903: environment -- set via: Course Settings -> Classlists and staff listing).
12904:
12905: =item *
12906:
12907: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
12908: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
12909: $possdomains and $possroles are optional array refs -- to domains to check and
12910: roles to check. If $possdomains is not specified, a dump will be done of the
12911: users' roles.db to check for a dc or su role in any domain. This can be
12912: time consuming if &privileged is called repeatedly (e.g., when displaying a
12913: classlist), so in such cases, supplying a $possdomains array is preferred, as
12914: this then allows &privileged_by_domain() to be used, which caches the identity
12915: of privileged users, eliminating the need for repeated calls to &dump().
12916:
12917: =item *
12918:
12919: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
12920: where the outer hash keys are domains specified in the $possdomains array ref,
12921: next inner hash keys are privileged roles specified in the $roles array ref,
12922: and the innermost hash contains key = value pairs for username:domain = end:start
12923: for active or future "privileged" users with that role in that domain. To avoid
12924: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
12925: innerhash are cached using priv_$role and $dom as the identifiers.
12926:
12927: =back
12928:
12929: =head2 User Modification
12930:
12931: =over 4
12932:
12933: =item *
12934:
12935: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12936: user for the level given by URL. Optional start and end dates (leave empty
12937: string or zero for "no date")
12938:
12939: =item *
12940:
12941: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12942: change a users, password, possible return values are: ok,
12943: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12944: refused
12945:
12946: =item *
12947:
12948: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12949:
12950: =item *
12951:
12952: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12953: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12954:
12955: will update user information (firstname,middlename,lastname,generation,
12956: permanentemail), and if forceid is true, student/employee ID also.
12957: A user's institutional affiliation(s) can also be updated.
12958: User information fields will not be overwritten with empty entries
12959: unless the field is included in the $candelete array reference.
12960: This array is included when a single user is modified via "Manage Users",
12961: or when Autoupdate.pl is run by cron in a domain.
12962:
12963: =item *
12964:
12965: modifystudent
12966:
12967: modify a student's enrollment and identification information.
12968: The course id is resolved based on the current user's environment.
12969: This means the invoking user must be a course coordinator or otherwise
12970: associated with a course.
12971:
12972: This call is essentially a wrapper for lonnet::modifyuser and
12973: lonnet::modify_student_enrollment
12974:
12975: Inputs:
12976:
12977: =over 4
12978:
12979: =item B<$udom> Student's loncapa domain
12980:
12981: =item B<$uname> Student's loncapa login name
12982:
12983: =item B<$uid> Student/Employee ID
12984:
12985: =item B<$umode> Student's authentication mode
12986:
12987: =item B<$upass> Student's password
12988:
12989: =item B<$first> Student's first name
12990:
12991: =item B<$middle> Student's middle name
12992:
12993: =item B<$last> Student's last name
12994:
12995: =item B<$gene> Student's generation
12996:
12997: =item B<$usec> Student's section in course
12998:
12999: =item B<$end> Unix time of the roles expiration
13000:
13001: =item B<$start> Unix time of the roles start date
13002:
13003: =item B<$forceid> If defined, allow $uid to be changed
13004:
13005: =item B<$desiredhome> server to use as home server for student
13006:
13007: =item B<$email> Student's permanent e-mail address
13008:
13009: =item B<$type> Type of enrollment (auto or manual)
13010:
13011: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
13012:
13013: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
13014:
13015: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
13016:
13017: =item B<$context> role change context (shown in User Management Logs display in a course)
13018:
13019: =item B<$inststatus> institutional status of user - : separated string of escaped status types
13020:
13021: =item B<$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.
13022:
13023: =back
13024:
13025: =item *
13026:
13027: modify_student_enrollment
13028:
13029: Change a student's enrollment status in a class. The environment variable
13030: 'role.request.course' must be defined for this function to proceed.
13031:
13032: Inputs:
13033:
13034: =over 4
13035:
13036: =item $udom, student's domain
13037:
13038: =item $uname, student's name
13039:
13040: =item $uid, student's user id
13041:
13042: =item $first, student's first name
13043:
13044: =item $middle
13045:
13046: =item $last
13047:
13048: =item $gene
13049:
13050: =item $usec
13051:
13052: =item $end
13053:
13054: =item $start
13055:
13056: =item $type
13057:
13058: =item $locktype
13059:
13060: =item $cid
13061:
13062: =item $selfenroll
13063:
13064: =item $context
13065:
13066: =item $credits, number of credits student will earn from this class
13067:
13068: =back
13069:
13070:
13071: =item *
13072:
13073: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
13074: custom role; give a custom role to a user for the level given by URL. Specify
13075: name and domain of role author, and role name
13076:
13077: =item *
13078:
13079: revokerole($udom,$uname,$url,$role) : revoke a role for url
13080:
13081: =item *
13082:
13083: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
13084:
13085: =back
13086:
13087: =head2 Course Infomation
13088:
13089: =over 4
13090:
13091: =item *
13092:
13093: coursedescription($courseid,$options) : returns a hash of information about the
13094: specified course id, including all environment settings for the
13095: course, the description of the course will be in the hash under the
13096: key 'description'
13097:
13098: $options is an optional parameter that if supplied is a hash reference that controls
13099: what how this function works. It has the following key/values:
13100:
13101: =over 4
13102:
13103: =item freshen_cache
13104:
13105: If defined, and the environment cache for the course is valid, it is
13106: returned in the returned hash.
13107:
13108: =item one_time
13109:
13110: If defined, the last cache time is set to _now_
13111:
13112: =item user
13113:
13114: If defined, the supplied username is used instead of the current user.
13115:
13116:
13117: =back
13118:
13119: =item *
13120:
13121: resdata($name,$domain,$type,@which) : request for current parameter
13122: setting for a specific $type, where $type is either 'course' or 'user',
13123: @what should be a list of parameters to ask about. This routine caches
13124: answers for 10 minutes.
13125:
13126: =item *
13127:
13128: get_courseresdata($courseid, $domain) : dump the entire course resource
13129: data base, returning a hash that is keyed by the resource name and has
13130: values that are the resource value. I believe that the timestamps and
13131: versions are also returned.
13132:
13133: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
13134: supplemental content area. This routine caches the number of files for
13135: 10 minutes.
13136:
13137: =back
13138:
13139: =head2 Course Modification
13140:
13141: =over 4
13142:
13143: =item *
13144:
13145: writecoursepref($courseid,%prefs) : write preferences (environment
13146: database) for a course
13147:
13148: =item *
13149:
13150: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
13151:
13152: =item *
13153:
13154: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
13155:
13156: =item *
13157:
13158: is_course($courseid), is_course($cdom, $cnum)
13159:
13160: Accepts either a combined $courseid (in the form of domain_courseid) or the
13161: two component version $cdom, $cnum. It checks if the specified course exists.
13162:
13163: Returns:
13164: undef if the course doesn't exist, otherwise
13165: in scalar context the combined courseid.
13166: in list context the two components of the course identifier, domain and
13167: courseid.
13168:
13169: =back
13170:
13171: =head2 Resource Subroutines
13172:
13173: =over 4
13174:
13175: =item *
13176:
13177: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
13178:
13179: =item *
13180:
13181: repcopy($filename) : subscribes to the requested file, and attempts to
13182: replicate from the owning library server, Might return
13183: 'unavailable', 'not_found', 'forbidden', 'ok', or
13184: 'bad_request', also attempts to grab the metadata for the
13185: resource. Expects the local filesystem pathname
13186: (/home/httpd/html/res/....)
13187:
13188: =back
13189:
13190: =head2 Resource Information
13191:
13192: =over 4
13193:
13194: =item *
13195:
13196: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
13197: and returns the value of a variety of different possible values,
13198: $varname should be a request string, and the other parameters can be
13199: used to specify who and what one is asking about. Ordinarily, $cid
13200: does not need to be specified, as it is retrived from
13201: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
13202: within lonuserstate::loadmap() when initializing a course, before
13203: $env{'request.course.id'} has been set, so it needs to be provided
13204: in that one case.
13205:
13206: Possible values for $varname are environment.lastname (or other item
13207: from the envirnment hash), user.name (or someother aspect about the
13208: user), resource.0.maxtries (or some other part and parameter of a
13209: resource)
13210:
13211: =item *
13212:
13213: directcondval($number) : get current value of a condition; reads from a state
13214: string
13215:
13216: =item *
13217:
13218: condval($condidx) : value of condition index based on state
13219:
13220: =item *
13221:
13222: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
13223: resource's metadata, $what should be either a specific key, or either
13224: 'keys' (to get a list of possible keys) or 'packages' to get a list of
13225: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
13226:
13227: this function automatically caches all requests
13228:
13229: =item *
13230:
13231: metadata_query($query,$custom,$customshow) : make a metadata query against the
13232: network of library servers; returns file handle of where SQL and regex results
13233: will be stored for query
13234:
13235: =item *
13236:
13237: symbread($filename) : return symbolic list entry (filename argument optional);
13238: returns the data handle
13239:
13240: =item *
13241:
13242: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
13243: and is a possible symb for the URL in $thisfn, and if is an encrypted
13244: resource that the user accessed using /enc/ returns a 1 on success, 0
13245: on failure, user must be in a course, as it assumes the existence of
13246: the course initial hash, and uses $env('request.course.id'}. The third
13247: arg is an optional reference to a scalar. If this arg is passed in the
13248: call to symbverify, it will be set to 1 if the symb has been set to be
13249: encrypted; otherwise it will be null.
13250:
13251: =item *
13252:
13253: symbclean($symb) : removes versions numbers from a symb, returns the
13254: cleaned symb
13255:
13256: =item *
13257:
13258: is_on_map($uri) : checks if the $uri is somewhere on the current
13259: course map, user must be in a course for it to work.
13260:
13261: =item *
13262:
13263: numval($salt) : return random seed value (addend for rndseed)
13264:
13265: =item *
13266:
13267: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13268: a random seed, all arguments are optional, if they aren't sent it uses the
13269: environment to derive them. Note: if symb isn't sent and it can't get one
13270: from &symbread it will use the current time as its return value
13271:
13272: =item *
13273:
13274: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13275: unfakeable, receipt
13276:
13277: =item *
13278:
13279: receipt() : API to ireceipt working off of env values; given out to users
13280:
13281: =item *
13282:
13283: countacc($url) : count the number of accesses to a given URL
13284:
13285: =item *
13286:
13287: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13288:
13289: =item *
13290:
13291: checkin($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 $tcrsid)
13292:
13293: =item *
13294:
13295: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13296:
13297: =item *
13298:
13299: devalidate($symb) : devalidate temporary spreadsheet calculations,
13300: forcing spreadsheet to reevaluate the resource scores next time.
13301:
13302: =item *
13303:
13304: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13305: when viewing in course context.
13306:
13307: input: six args -- filename (decluttered), course number, course domain,
13308: url, symb (if registered) and group (if this is a
13309: group item -- e.g., bulletin board, group page etc.).
13310:
13311: output: array of five scalars --
13312: $cfile -- url for file editing if editable on current server
13313: $home -- homeserver of resource (i.e., for author if published,
13314: or course if uploaded.).
13315: $switchserver -- 1 if server switch will be needed.
13316: $forceedit -- 1 if icon/link should be to go to edit mode
13317: $forceview -- 1 if icon/link should be to go to view mode
13318:
13319: =item *
13320:
13321: is_course_upload($file,$cnum,$cdom)
13322:
13323: Used in course context to determine if current file was uploaded to
13324: the course (i.e., would be found in /userfiles/docs on the course's
13325: homeserver.
13326:
13327: input: 3 args -- filename (decluttered), course number and course domain.
13328: output: boolean -- 1 if file was uploaded.
13329:
13330: =back
13331:
13332: =head2 Storing/Retreiving Data
13333:
13334: =over 4
13335:
13336: =item *
13337:
13338: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
13339: for this url; hashref needs to be given and should be a \%hashname; the
13340: remaining args aren't required and if they aren't passed or are '' they will
13341: be derived from the env
13342:
13343: =item *
13344:
13345: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
13346: uses critical subroutine
13347:
13348: =item *
13349:
13350: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13351: all args are optional
13352:
13353: =item *
13354:
13355: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13356: dumps the complete (or key matching regexp) namespace into a hash
13357: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13358: normally &store()ed into
13359:
13360: $range should be either an integer '100' (give me the first 100
13361: matching records)
13362: or be two integers sperated by a - with no spaces
13363: '30-50' (give me the 30th through the 50th matching
13364: records)
13365:
13366:
13367: =item *
13368:
13369: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
13370: replaces a &store() version of data with a replacement set of data
13371: for a particular resource in a namespace passed in the $storehash hash
13372: reference. If $tolog is true, the transaction is logged in the courselog
13373: with an action=PUTSTORE.
13374:
13375: =item *
13376:
13377: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13378: works very similar to store/cstore, but all data is stored in a
13379: temporary location and can be reset using tmpreset, $storehash should
13380: be a hash reference, returns nothing on success
13381:
13382: =item *
13383:
13384: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13385: similar to restore, but all data is stored in a temporary location and
13386: can be reset using tmpreset. Returns a hash of values on success,
13387: error string otherwise.
13388:
13389: =item *
13390:
13391: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13392: deltes all keys for $symb form the temporary storage hash.
13393:
13394: =item *
13395:
13396: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13397: reference filled in from namesp ($udom and $uname are optional)
13398:
13399: =item *
13400:
13401: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13402: namesp ($udom and $uname are optional)
13403:
13404: =item *
13405:
13406: dump($namespace,$udom,$uname,$regexp,$range) :
13407: dumps the complete (or key matching regexp) namespace into a hash
13408: ($udom, $uname, $regexp, $range are optional)
13409:
13410: $range should be either an integer '100' (give me the first 100
13411: matching records)
13412: or be two integers sperated by a - with no spaces
13413: '30-50' (give me the 30th through the 50th matching
13414: records)
13415: =item *
13416:
13417: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13418: $store can be a scalar, an array reference, or if the amount to be
13419: incremented is > 1, a hash reference.
13420:
13421: ($udom and $uname are optional)
13422:
13423: =item *
13424:
13425: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13426: ($udom and $uname are optional)
13427:
13428: =item *
13429:
13430: cput($namespace,$storehash,$udom,$uname) : critical put
13431: ($udom and $uname are optional)
13432:
13433: =item *
13434:
13435: newput($namespace,$storehash,$udom,$uname) :
13436:
13437: Attempts to store the items in the $storehash, but only if they don't
13438: currently exist, if this succeeds you can be certain that you have
13439: successfully created a new key value pair in the $namespace db.
13440:
13441:
13442: Args:
13443: $namespace: name of database to store values to
13444: $storehash: hashref to store to the db
13445: $udom: (optional) domain of user containing the db
13446: $uname: (optional) name of user caontaining the db
13447:
13448: Returns:
13449: 'ok' -> succeeded in storing all keys of $storehash
13450: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13451: least <key> already existed in the db (other
13452: requested keys may also already exist)
13453: 'error: <msg>' -> unable to tie the DB or other error occurred
13454: 'con_lost' -> unable to contact request server
13455: 'refused' -> action was not allowed by remote machine
13456:
13457:
13458: =item *
13459:
13460: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13461: reference filled in from namesp (encrypts the return communication)
13462: ($udom and $uname are optional)
13463:
13464: =item *
13465:
13466: log($udom,$name,$home,$message) : write to permanent log for user; use
13467: critical subroutine
13468:
13469: =item *
13470:
13471: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13472: array reference filled in from namespace found in domain level on either
13473: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13474:
13475: =item *
13476:
13477: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13478: domain level either on specified domain server ($uhome) or primary domain
13479: server ($udom and $uhome are optional)
13480:
13481: =item *
13482:
13483: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
13484: for: authentication, language, quotas, timezone, date locale, and portal URL in
13485: the target domain.
13486:
13487: May also include additional key => value pairs for the following groups:
13488:
13489: =over
13490:
13491: =item
13492: disk quotas (MB allocated by default to portfolios and authoring spaces).
13493:
13494: =over
13495:
13496: =item defaultquota, authorquota
13497:
13498: =back
13499:
13500: =item
13501: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
13502: portfolio for users).
13503:
13504: =over
13505:
13506: =item
13507: aboutme, blog, webdav, portfolio
13508:
13509: =back
13510:
13511: =item
13512: requestcourses: ability to request courses, and how requests are processed.
13513:
13514: =over
13515:
13516: =item
13517: official, unofficial, community, textbook
13518:
13519: =back
13520:
13521: =item
13522: inststatus: types of institutional affiliation, and order in which they are displayed.
13523:
13524: =over
13525:
13526: =item
13527: inststatustypes, inststatusorder, inststatusguest
13528:
13529: =back
13530:
13531: =item
13532: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
13533: for course's uploaded content.
13534:
13535: =over
13536:
13537: =item
13538: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota, communityquota, textbookquota
13539:
13540: =back
13541:
13542: =item
13543: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
13544: on your servers.
13545:
13546: =over
13547:
13548: =item
13549: remotesessions, hostedsessions
13550:
13551: =back
13552:
13553: =back
13554:
13555: In cases where a domain coordinator has never used the "Set Domain Configuration"
13556: utility to create a configuration.db file on a domain's primary library server
13557: only the following domain defaults: auth_def, auth_arg_def, lang_def
13558: -- corresponding values are authentication type (internal, krb4, krb5,
13559: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
13560: will be available. Values are retrieved from cache (if current), unless the
13561: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
13562: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
13563:
13564: Typical usage:
13565:
13566: %domdefaults = &get_domain_defaults($target_domain);
13567:
13568: =back
13569:
13570: =head2 Network Status Functions
13571:
13572: =over 4
13573:
13574: =item *
13575:
13576: dirlist() : return directory list based on URI (first arg).
13577:
13578: Inputs: 1 required, 5 optional.
13579:
13580: =over
13581:
13582: =item
13583: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13584:
13585: =item
13586: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13587:
13588: =item
13589: $username - username of user/course to be listed. Extracted from $uri if absent.
13590:
13591: =item
13592: $getpropath - boolean: 1 if prepend path using &propath().
13593:
13594: =item
13595: $getuserdir - boolean: 1 if prepend path for "userfiles".
13596:
13597: =item
13598: $alternateRoot - path to prepend in place of path from $uri.
13599:
13600: =back
13601:
13602: Returns: Array of up to two items.
13603:
13604: =over
13605:
13606: a reference to an array of files/subdirectories
13607:
13608: =over
13609:
13610: Each element in the array of files/subdirectories is a & separated list of
13611: item name and the result of running stat on the item. If dirlist was requested
13612: for a file instead of a directory, the item name will be ''. For a directory
13613: listing, if the item is a metadata file, the element will end &N&M
13614: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13615: default copyright set (1).
13616:
13617: =back
13618:
13619: a scalar containing error condition (if encountered).
13620:
13621: =over
13622:
13623: =item
13624: no_host (no homeserver identified for $username:$domain).
13625:
13626: =item
13627: no_such_host (server contacted for listing not identified as valid host).
13628:
13629: =item
13630: con_lost (connection to remote server failed).
13631:
13632: =item
13633: refused (invalid $username:$domain received on lond side).
13634:
13635: =item
13636: no_such_dir (directory at specified path on lond side does not exist).
13637:
13638: =item
13639: empty (directory at specified path on lond side is empty).
13640:
13641: =over
13642:
13643: This is currently not encountered because the &ls3, &ls2,
13644: &ls (_handler) routines on the lond side do not filter out
13645: . and .. from a directory listing.
13646:
13647: =back
13648:
13649: =back
13650:
13651: =back
13652:
13653: =item *
13654:
13655: spareserver() : find server with least workload from spare.tab
13656:
13657:
13658: =item *
13659:
13660: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13661: if there is no corresponding loncapa host.
13662:
13663: =back
13664:
13665:
13666: =head2 Apache Request
13667:
13668: =over 4
13669:
13670: =item *
13671:
13672: ssi($url,%hash) : server side include, does a complete request cycle on url to
13673: localhost, posts hash
13674:
13675: =back
13676:
13677: =head2 Data to String to Data
13678:
13679: =over 4
13680:
13681: =item *
13682:
13683: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13684: and '&' separators, supports elements that are arrayrefs and hashrefs
13685:
13686: =item *
13687:
13688: hashref2str($hashref) : convert a hashref into a string complete with
13689: escaping and '=' and '&' separators, supports elements that are
13690: arrayrefs and hashrefs
13691:
13692: =item *
13693:
13694: arrayref2str($arrayref) : convert an arrayref into a string complete
13695: with escaping and '&' separators, supports elements that are arrayrefs
13696: and hashrefs
13697:
13698: =item *
13699:
13700: str2hash($string) : convert string to hash using unescaping and
13701: splitting on '=' and '&', supports elements that are arrayrefs and
13702: hashrefs
13703:
13704: =item *
13705:
13706: str2array($string) : convert string to hash using unescaping and
13707: splitting on '&', supports elements that are arrayrefs and hashrefs
13708:
13709: =back
13710:
13711: =head2 Logging Routines
13712:
13713:
13714: These routines allow one to make log messages in the lonnet.log and
13715: lonnet.perm logfiles.
13716:
13717: =over 4
13718:
13719: =item *
13720:
13721: logtouch() : make sure the logfile, lonnet.log, exists
13722:
13723: =item *
13724:
13725: logthis() : append message to the normal lonnet.log file, it gets
13726: preiodically rolled over and deleted.
13727:
13728: =item *
13729:
13730: logperm() : append a permanent message to lonnet.perm.log, this log
13731: file never gets deleted by any automated portion of the system, only
13732: messages of critical importance should go in here.
13733:
13734:
13735: =back
13736:
13737: =head2 General File Helper Routines
13738:
13739: =over 4
13740:
13741: =item *
13742:
13743: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13744: (a) files in /uploaded
13745: (i) If a local copy of the file exists -
13746: compares modification date of local copy with last-modified date for
13747: definitive version stored on home server for course. If local copy is
13748: stale, requests a new version from the home server and stores it.
13749: If the original has been removed from the home server, then local copy
13750: is unlinked.
13751: (ii) If local copy does not exist -
13752: requests the file from the home server and stores it.
13753:
13754: If $caller is 'uploadrep':
13755: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13756: for request for files originally uploaded via DOCS.
13757: - returns 'ok' if fresh local copy now available, -1 otherwise.
13758:
13759: Otherwise:
13760: This indicates a call from the content generation phase of the request.
13761: - returns the entire contents of the file or -1.
13762:
13763: (b) files in /res
13764: - returns the entire contents of a file or -1;
13765: it properly subscribes to and replicates the file if neccessary.
13766:
13767:
13768: =item *
13769:
13770: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13771: reference
13772:
13773: returns either a stat() list of data about the file or an empty list
13774: if the file doesn't exist or couldn't find out about it (connection
13775: problems or user unknown)
13776:
13777: =item *
13778:
13779: filelocation($dir,$file) : returns file system location of a file
13780: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13781: directory that relative $file lookups are to looked in ($dir of /a/dir
13782: and a file of ../bob will become /a/bob)
13783:
13784: =item *
13785:
13786: hreflocation($dir,$file) : returns file system location or a URL; same as
13787: filelocation except for hrefs
13788:
13789: =item *
13790:
13791: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
13792: also removes beginning /home/httpd/html unless /priv/ follows it.
13793:
13794: =back
13795:
13796: =head2 Usererfile file routines (/uploaded*)
13797:
13798: =over 4
13799:
13800: =item *
13801:
13802: userfileupload(): main rotine for putting a file in a user or course's
13803: filespace, arguments are,
13804:
13805: formname - required - this is the name of the element in $env where the
13806: filename, and the contents of the file to create/modifed exist
13807: the filename is in $env{'form.'.$formname.'.filename'} and the
13808: contents of the file is located in $env{'form.'.$formname}
13809: context - if coursedoc, store the file in the course of the active role
13810: of the current user;
13811: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13812: if 'canceloverwrite': delete file in tmp/overwrites directory
13813: subdir - required - subdirectory to put the file in under ../userfiles/
13814: if undefined, it will be placed in "unknown"
13815:
13816: (This routine calls clean_filename() to remove any dangerous
13817: characters from the filename, and then calls finuserfileupload() to
13818: complete the transaction)
13819:
13820: returns either the url of the uploaded file (/uploaded/....) if successful
13821: and /adm/notfound.html if unsuccessful
13822:
13823: =item *
13824:
13825: clean_filename(): routine for cleaing a filename up for storage in
13826: userfile space, argument is:
13827:
13828: filename - proposed filename
13829:
13830: returns: the new clean filename
13831:
13832: =item *
13833:
13834: finishuserfileupload(): routine that creates and sends the file to
13835: userspace, probably shouldn't be called directly
13836:
13837: docuname: username or courseid of destination for the file
13838: docudom: domain of user/course of destination for the file
13839: formname: same as for userfileupload()
13840: fname: filename (including subdirectories) for the file
13841: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13842: allfiles: reference to hash used to store objects found by parser
13843: codebase: reference to hash used for codebases of java objects found by parser
13844: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13845: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13846: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13847: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13848: context: if 'overwrite', will move the uploaded file from its temporary location to
13849: userfiles to facilitate overwriting a previously uploaded file with same name.
13850: mimetype: reference to scalar to accommodate mime type determined
13851: from File::MMagic if $parser = parse.
13852:
13853: returns either the url of the uploaded file (/uploaded/....) if successful
13854: and /adm/notfound.html if unsuccessful (or an error message if context
13855: was 'overwrite').
13856:
13857:
13858: =item *
13859:
13860: renameuserfile(): renames an existing userfile to a new name
13861:
13862: Args:
13863: docuname: username or courseid of destination for the file
13864: docudom: domain of user/course of destination for the file
13865: old: current file name (including any subdirs under userfiles)
13866: new: desired file name (including any subdirs under userfiles)
13867:
13868: =item *
13869:
13870: mkdiruserfile(): creates a directory is a userfiles dir
13871:
13872: Args:
13873: docuname: username or courseid of destination for the file
13874: docudom: domain of user/course of destination for the file
13875: dir: dir to create (including any subdirs under userfiles)
13876:
13877: =item *
13878:
13879: removeuserfile(): removes a file that exists in userfiles
13880:
13881: Args:
13882: docuname: username or courseid of destination for the file
13883: docudom: domain of user/course of destination for the file
13884: fname: filname to delete (including any subdirs under userfiles)
13885:
13886: =item *
13887:
13888: removeuploadedurl(): convience function for removeuserfile()
13889:
13890: Args:
13891: url: a full /uploaded/... url to delete
13892:
13893: =item *
13894:
13895: get_portfile_permissions():
13896: Args:
13897: domain: domain of user or course contain the portfolio files
13898: user: name of user or num of course contain the portfolio files
13899: Returns:
13900: hashref of a dump of the proper file_permissions.db
13901:
13902:
13903: =item *
13904:
13905: get_access_controls():
13906:
13907: Args:
13908: current_permissions: the hash ref returned from get_portfile_permissions()
13909: group: (optional) the group you want the files associated with
13910: file: (optional) the file you want access info on
13911:
13912: Returns:
13913: a hash (keys are file names) of hashes containing
13914: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13915: values are XML containing access control settings (see below)
13916:
13917: Internal notes:
13918:
13919: access controls are stored in file_permissions.db as key=value pairs.
13920: key -> path to file/file_name\0uniqueID:scope_end_start
13921: where scope -> public,guest,course,group,domains or users.
13922: end -> UNIX time for end of access (0 -> no end date)
13923: start -> UNIX time for start of access
13924:
13925: value -> XML description of access control
13926: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13927: <start></start>
13928: <end></end>
13929:
13930: <password></password> for scope type = guest
13931:
13932: <domain></domain> for scope type = course or group
13933: <number></number>
13934: <roles id="">
13935: <role></role>
13936: <access></access>
13937: <section></section>
13938: <group></group>
13939: </roles>
13940:
13941: <dom></dom> for scope type = domains
13942:
13943: <users> for scope type = users
13944: <user>
13945: <uname></uname>
13946: <udom></udom>
13947: </user>
13948: </users>
13949: </scope>
13950:
13951: Access data is also aggregated for each file in an additional key=value pair:
13952: key -> path to file/file_name\0accesscontrol
13953: value -> reference to hash
13954: hash contains key = value pairs
13955: where key = uniqueID:scope_end_start
13956: value = UNIX time record was last updated
13957:
13958: Used to improve speed of look-ups of access controls for each file.
13959:
13960: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13961:
13962: =item *
13963:
13964: modify_access_controls():
13965:
13966: Modifies access controls for a portfolio file
13967: Args
13968: 1. file name
13969: 2. reference to hash of required changes,
13970: 3. domain
13971: 4. username
13972: where domain,username are the domain of the portfolio owner
13973: (either a user or a course)
13974:
13975: Returns:
13976: 1. result of additions or updates ('ok' or 'error', with error message).
13977: 2. result of deletions ('ok' or 'error', with error message).
13978: 3. reference to hash of any new or updated access controls.
13979: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13980: key = integer (inbound ID)
13981: value = uniqueID
13982:
13983: =item *
13984:
13985: get_timebased_id():
13986:
13987: Attempts to get a unique timestamp-based suffix for use with items added to a
13988: course via the Course Editor (e.g., folders, composite pages,
13989: group bulletin boards).
13990:
13991: Args: (first three required; six others optional)
13992:
13993: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13994: docssequence, or name of group
13995:
13996: 2. keyid (alphanumeric): name of temporary locking key in hash,
13997: e.g., num, boardids
13998:
13999: 3. namespace: name of gdbm file used to store suffixes already assigned;
14000: file will be named nohist_namespace.db
14001:
14002: 4. cdom: domain of course; default is current course domain from %env
14003:
14004: 5. cnum: course number; default is current course number from %env
14005:
14006: 6. idtype: set to concat if an additional digit is to be appended to the
14007: unix timestamp to form the suffix, if the plain timestamp is already
14008: in use. Default is to not do this, but simply increment the unix
14009: timestamp by 1 until a unique key is obtained.
14010:
14011: 7. who: holder of locking key; defaults to user:domain for user.
14012:
14013: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
14014: retrying); default is 3.
14015:
14016: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
14017:
14018: Returns:
14019:
14020: 1. suffix obtained (numeric)
14021:
14022: 2. result of deleting locking key (ok if deleted, or lock never obtained)
14023:
14024: 3. error: contains (localized) error message if an error occurred.
14025:
14026:
14027: =back
14028:
14029: =head2 HTTP Helper Routines
14030:
14031: =over 4
14032:
14033: =item *
14034:
14035: escape() : unpack non-word characters into CGI-compatible hex codes
14036:
14037: =item *
14038:
14039: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
14040:
14041: =back
14042:
14043: =head1 PRIVATE SUBROUTINES
14044:
14045: =head2 Underlying communication routines (Shouldn't call)
14046:
14047: =over 4
14048:
14049: =item *
14050:
14051: subreply() : tries to pass a message to lonc, returns con_lost if incapable
14052:
14053: =item *
14054:
14055: reply() : uses subreply to send a message to remote machine, logs all failures
14056:
14057: =item *
14058:
14059: critical() : passes a critical message to another server; if cannot
14060: get through then place message in connection buffer directory and
14061: returns con_delayed, if incapable of saving message, returns
14062: con_failed
14063:
14064: =item *
14065:
14066: reconlonc() : tries to reconnect lonc client processes.
14067:
14068: =back
14069:
14070: =head2 Resource Access Logging
14071:
14072: =over 4
14073:
14074: =item *
14075:
14076: flushcourselogs() : flush (save) buffer logs and access logs
14077:
14078: =item *
14079:
14080: courselog($what) : save message for course in hash
14081:
14082: =item *
14083:
14084: courseacclog($what) : save message for course using &courselog(). Perform
14085: special processing for specific resource types (problems, exams, quizzes, etc).
14086:
14087: =item *
14088:
14089: goodbye() : flush course logs and log shutting down; it is called in srm.conf
14090: as a PerlChildExitHandler
14091:
14092: =back
14093:
14094: =head2 Other
14095:
14096: =over 4
14097:
14098: =item *
14099:
14100: symblist($mapname,%newhash) : update symbolic storage links
14101:
14102: =back
14103:
14104: =cut
14105:
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