1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1301 2016/03/02 14:14:14 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:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( sleep gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 20; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$cachekeys) = @_;
360: my $items;
361: return unless (ref($cachekeys) eq 'ARRAY');
362: my $cachestr = join('&',@{$cachekeys});
363: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
364: return $response;
365: }
366:
367: # -------------------------------------------------- Non-critical communication
368: sub subreply {
369: my ($cmd,$server)=@_;
370: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
371: #
372: # With loncnew process trimming, there's a timing hole between lonc server
373: # process exit and the master server picking up the listen on the AF_UNIX
374: # socket. In that time interval, a lock file will exist:
375:
376: my $lockfile=$peerfile.".lock";
377: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
378: sleep(0.1);
379: }
380: # At this point, either a loncnew parent is listening or an old lonc
381: # or loncnew child is listening so we can connect or everything's dead.
382: #
383: # We'll give the connection a few tries before abandoning it. If
384: # connection is not possible, we'll con_lost back to the client.
385: #
386: my $client;
387: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
388: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
389: Type => SOCK_STREAM,
390: Timeout => 10);
391: if ($client) {
392: last; # Connected!
393: } else {
394: &create_connection(&hostname($server),$server);
395: }
396: sleep(0.1); # Try again later if failed connection.
397: }
398: my $answer;
399: if ($client) {
400: print $client "sethost:$server:$cmd\n";
401: $answer=<$client>;
402: if (!$answer) { $answer="con_lost"; }
403: chomp($answer);
404: } else {
405: $answer = 'con_lost'; # Failed connection.
406: }
407: return $answer;
408: }
409:
410: sub reply {
411: my ($cmd,$server)=@_;
412: unless (defined(&hostname($server))) { return 'no_such_host'; }
413: my $answer=subreply($cmd,$server);
414: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
415: &logthis("<font color=\"blue\">WARNING:".
416: " $cmd to $server returned $answer</font>");
417: }
418: return $answer;
419: }
420:
421: # ----------------------------------------------------------- Send USR1 to lonc
422:
423: sub reconlonc {
424: my ($lonid) = @_;
425: if ($lonid) {
426: my $hostname = &hostname($lonid);
427: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
428: if ($hostname && -e $peerfile) {
429: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
430: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
431: Type => SOCK_STREAM,
432: Timeout => 10);
433: if ($client) {
434: print $client ("reset_retries\n");
435: my $answer=<$client>;
436: #reset just this one.
437: }
438: }
439: return;
440: }
441:
442: &logthis("Trying to reconnect lonc");
443: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
444: if (open(my $fh,"<$loncfile")) {
445: my $loncpid=<$fh>;
446: chomp($loncpid);
447: if (kill 0 => $loncpid) {
448: &logthis("lonc at pid $loncpid responding, sending USR1");
449: kill USR1 => $loncpid;
450: sleep 1;
451: } else {
452: &logthis(
453: "<font color=\"blue\">WARNING:".
454: " lonc at pid $loncpid not responding, giving up</font>");
455: }
456: } else {
457: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
458: }
459: }
460:
461: # ------------------------------------------------------ Critical communication
462:
463: sub critical {
464: my ($cmd,$server)=@_;
465: unless (&hostname($server)) {
466: &logthis("<font color=\"blue\">WARNING:".
467: " Critical message to unknown server ($server)</font>");
468: return 'no_such_host';
469: }
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: &reconlonc($server);
473: my $answer=reply($cmd,$server);
474: if ($answer eq 'con_lost') {
475: my $now=time;
476: my $middlename=$cmd;
477: $middlename=substr($middlename,0,16);
478: $middlename=~s/\W//g;
479: my $dfilename=
480: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
481: $dumpcount++;
482: {
483: my $dfh;
484: if (open($dfh,">$dfilename")) {
485: print $dfh "$cmd\n";
486: close($dfh);
487: }
488: }
489: sleep 1;
490: my $wcmd='';
491: {
492: my $dfh;
493: if (open($dfh,"<$dfilename")) {
494: $wcmd=<$dfh>;
495: close($dfh);
496: }
497: }
498: chomp($wcmd);
499: if ($wcmd eq $cmd) {
500: &logthis("<font color=\"blue\">WARNING: ".
501: "Connection buffer $dfilename: $cmd</font>");
502: &logperm("D:$server:$cmd");
503: return 'con_delayed';
504: } else {
505: &logthis("<font color=\"red\">CRITICAL:"
506: ." Critical connection failed: $server $cmd</font>");
507: &logperm("F:$server:$cmd");
508: return 'con_failed';
509: }
510: }
511: }
512: return $answer;
513: }
514:
515: # ------------------------------------------- check if return value is an error
516:
517: sub error {
518: my ($result) = @_;
519: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
520: if ($2 == 2) { return undef; }
521: return $1;
522: }
523: return undef;
524: }
525:
526: sub convert_and_load_session_env {
527: my ($lonidsdir,$handle)=@_;
528: my @profile;
529: {
530: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
531: if (!$opened) {
532: return 0;
533: }
534: flock($idf,LOCK_SH);
535: @profile=<$idf>;
536: close($idf);
537: }
538: my %temp_env;
539: foreach my $line (@profile) {
540: if ($line !~ m/=/) {
541: return 0;
542: }
543: chomp($line);
544: my ($envname,$envvalue)=split(/=/,$line,2);
545: $temp_env{&unescape($envname)} = &unescape($envvalue);
546: }
547: unlink("$lonidsdir/$handle.id");
548: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
549: 0640)) {
550: %disk_env = %temp_env;
551: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
552: untie(%disk_env);
553: }
554: return 1;
555: }
556:
557: # ------------------------------------------- Transfer profile into environment
558: my $env_loaded;
559: sub transfer_profile_to_env {
560: my ($lonidsdir,$handle,$force_transfer) = @_;
561: if (!$force_transfer && $env_loaded) { return; }
562:
563: if (!defined($lonidsdir)) {
564: $lonidsdir = $perlvar{'lonIDsDir'};
565: }
566: if (!defined($handle)) {
567: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
568: }
569:
570: my $convert;
571: {
572: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
573: if (!$opened) {
574: return;
575: }
576: flock($idf,LOCK_SH);
577: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
578: &GDBM_READER(),0640)) {
579: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
580: untie(%disk_env);
581: } else {
582: $convert = 1;
583: }
584: }
585: if ($convert) {
586: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
587: &logthis("Failed to load session, or convert session.");
588: }
589: }
590:
591: my %remove;
592: while ( my $envname = each(%env) ) {
593: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
594: if ($time < time-300) {
595: $remove{$key}++;
596: }
597: }
598: }
599:
600: $env{'user.environment'} = "$lonidsdir/$handle.id";
601: $env_loaded=1;
602: foreach my $expired_key (keys(%remove)) {
603: &delenv($expired_key);
604: }
605: }
606:
607: # ---------------------------------------------------- Check for valid session
608: sub check_for_valid_session {
609: my ($r,$name,$userhashref) = @_;
610: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
611: if ($name eq '') {
612: $name = 'lonID';
613: }
614: my $lonid=$cookies{$name};
615: return undef if (!$lonid);
616:
617: my $handle=&LONCAPA::clean_handle($lonid->value);
618: my $lonidsdir;
619: if ($name eq 'lonDAV') {
620: $lonidsdir=$r->dir_config('lonDAVsessDir');
621: } else {
622: $lonidsdir=$r->dir_config('lonIDsDir');
623: }
624: return undef if (!-e "$lonidsdir/$handle.id");
625:
626: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
627: return undef if (!$opened);
628:
629: flock($idf,LOCK_SH);
630: my %disk_env;
631: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
632: &GDBM_READER(),0640)) {
633: return undef;
634: }
635:
636: if (!defined($disk_env{'user.name'})
637: || !defined($disk_env{'user.domain'})) {
638: return undef;
639: }
640:
641: if (ref($userhashref) eq 'HASH') {
642: $userhashref->{'name'} = $disk_env{'user.name'};
643: $userhashref->{'domain'} = $disk_env{'user.domain'};
644: }
645:
646: return $handle;
647: }
648:
649: sub timed_flock {
650: my ($file,$lock_type) = @_;
651: my $failed=0;
652: eval {
653: local $SIG{__DIE__}='DEFAULT';
654: local $SIG{ALRM}=sub {
655: $failed=1;
656: die("failed lock");
657: };
658: alarm(13);
659: flock($file,$lock_type);
660: alarm(0);
661: };
662: if ($failed) {
663: return undef;
664: } else {
665: return 1;
666: }
667: }
668:
669: # ---------------------------------------------------------- Append Environment
670:
671: sub appenv {
672: my ($newenv,$roles) = @_;
673: if (ref($newenv) eq 'HASH') {
674: foreach my $key (keys(%{$newenv})) {
675: my $refused = 0;
676: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
677: $refused = 1;
678: if (ref($roles) eq 'ARRAY') {
679: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
680: if (grep(/^\Q$role\E$/,@{$roles})) {
681: $refused = 0;
682: }
683: }
684: }
685: if ($refused) {
686: &logthis("<font color=\"blue\">WARNING: ".
687: "Attempt to modify environment ".$key." to ".$newenv->{$key}
688: .'</font>');
689: delete($newenv->{$key});
690: } else {
691: $env{$key}=$newenv->{$key};
692: }
693: }
694: my $opened = open(my $env_file,'+<',$env{'user.environment'});
695: if ($opened
696: && &timed_flock($env_file,LOCK_EX)
697: &&
698: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
699: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
700: while (my ($key,$value) = each(%{$newenv})) {
701: $disk_env{$key} = $value;
702: }
703: untie(%disk_env);
704: }
705: }
706: return 'ok';
707: }
708: # ----------------------------------------------------- Delete from Environment
709:
710: sub delenv {
711: my ($delthis,$regexp,$roles) = @_;
712: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
713: my $refused = 1;
714: if (ref($roles) eq 'ARRAY') {
715: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
716: if (grep(/^\Q$role\E$/,@{$roles})) {
717: $refused = 0;
718: }
719: }
720: if ($refused) {
721: &logthis("<font color=\"blue\">WARNING: ".
722: "Attempt to delete from environment ".$delthis);
723: return 'error';
724: }
725: }
726: my $opened = open(my $env_file,'+<',$env{'user.environment'});
727: if ($opened
728: && &timed_flock($env_file,LOCK_EX)
729: &&
730: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
731: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
732: foreach my $key (keys(%disk_env)) {
733: if ($regexp) {
734: if ($key=~/^$delthis/) {
735: delete($env{$key});
736: delete($disk_env{$key});
737: }
738: } else {
739: if ($key=~/^\Q$delthis\E/) {
740: delete($env{$key});
741: delete($disk_env{$key});
742: }
743: }
744: }
745: untie(%disk_env);
746: }
747: return 'ok';
748: }
749:
750: sub get_env_multiple {
751: my ($name) = @_;
752: my @values;
753: if (defined($env{$name})) {
754: # exists is it an array
755: if (ref($env{$name})) {
756: @values=@{ $env{$name} };
757: } else {
758: $values[0]=$env{$name};
759: }
760: }
761: return(@values);
762: }
763:
764: # ------------------------------------------------------------------- Locking
765:
766: sub set_lock {
767: my ($text)=@_;
768: $locknum++;
769: my $id=$$.'-'.$locknum;
770: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
771: 'session.lock.'.$id => $text});
772: return $id;
773: }
774:
775: sub get_locks {
776: my $num=0;
777: my %texts=();
778: foreach my $lock (split(/\,/,$env{'session.locks'})) {
779: if ($lock=~/\w/) {
780: $num++;
781: $texts{$lock}=$env{'session.lock.'.$lock};
782: }
783: }
784: return ($num,%texts);
785: }
786:
787: sub remove_lock {
788: my ($id)=@_;
789: my $newlocks='';
790: foreach my $lock (split(/\,/,$env{'session.locks'})) {
791: if (($lock=~/\w/) && ($lock ne $id)) {
792: $newlocks.=','.$lock;
793: }
794: }
795: &appenv({'session.locks' => $newlocks});
796: &delenv('session.lock.'.$id);
797: }
798:
799: sub remove_all_locks {
800: my $activelocks=$env{'session.locks'};
801: foreach my $lock (split(/\,/,$env{'session.locks'})) {
802: if ($lock=~/\w/) {
803: &remove_lock($lock);
804: }
805: }
806: }
807:
808:
809: # ------------------------------------------ Find out current server userload
810: sub userload {
811: my $numusers=0;
812: {
813: opendir(LONIDS,$perlvar{'lonIDsDir'});
814: my $filename;
815: my $curtime=time;
816: while ($filename=readdir(LONIDS)) {
817: next if ($filename eq '.' || $filename eq '..');
818: next if ($filename =~ /publicuser_\d+\.id/);
819: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
820: if ($curtime-$mtime < 1800) { $numusers++; }
821: }
822: closedir(LONIDS);
823: }
824: my $userloadpercent=0;
825: my $maxuserload=$perlvar{'lonUserLoadLim'};
826: if ($maxuserload) {
827: $userloadpercent=100*$numusers/$maxuserload;
828: }
829: $userloadpercent=sprintf("%.2f",$userloadpercent);
830: return $userloadpercent;
831: }
832:
833: # ------------------------------ Find server with least workload from spare.tab
834:
835: sub spareserver {
836: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
837: my $spare_server;
838: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
839: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
840: : $userloadpercent;
841: my ($uint_dom,$remotesessions);
842: if (($udom ne '') && (&domain($udom) ne '')) {
843: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
844: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
845: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
846: $remotesessions = $udomdefaults{'remotesessions'};
847: }
848: my $spareshash = &this_host_spares($udom);
849: if (ref($spareshash) eq 'HASH') {
850: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
851: foreach my $try_server (@{ $spareshash->{'primary'} }) {
852: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
853: $try_server));
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858:
859: my $found_server = ($spare_server ne '' && $lowest_load < 100);
860:
861: if (!$found_server) {
862: if (ref($spareshash->{'default'}) eq 'ARRAY') {
863: foreach my $try_server (@{ $spareshash->{'default'} }) {
864: next unless (&spare_can_host($udom,$uint_dom,
865: $remotesessions,$try_server));
866: ($spare_server, $lowest_load) =
867: &compare_server_load($try_server, $spare_server, $lowest_load);
868: }
869: }
870: }
871: }
872:
873: if (!$want_server_name) {
874: my $protocol = 'http';
875: if ($protocol{$spare_server} eq 'https') {
876: $protocol = $protocol{$spare_server};
877: }
878: if (defined($spare_server)) {
879: my $hostname = &hostname($spare_server);
880: if (defined($hostname)) {
881: $spare_server = $protocol.'://'.$hostname;
882: }
883: }
884: }
885: return $spare_server;
886: }
887:
888: sub compare_server_load {
889: my ($try_server, $spare_server, $lowest_load, $required) = @_;
890:
891: if ($required) {
892: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
893: my $remoterev = &get_server_loncaparev(undef,$try_server);
894: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
895: if (($major eq '' && $minor eq '') ||
896: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
897: return ($spare_server,$lowest_load);
898: }
899: }
900:
901: my $loadans = &reply('load', $try_server);
902: my $userloadans = &reply('userload',$try_server);
903:
904: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
905: return ($spare_server, $lowest_load); #didn't get a number from the server
906: }
907:
908: my $load;
909: if ($loadans =~ /\d/) {
910: if ($userloadans =~ /\d/) {
911: #both are numbers, pick the bigger one
912: $load = ($loadans > $userloadans) ? $loadans
913: : $userloadans;
914: } else {
915: $load = $loadans;
916: }
917: } else {
918: $load = $userloadans;
919: }
920:
921: if (($load =~ /\d/) && ($load < $lowest_load)) {
922: $spare_server = $try_server;
923: $lowest_load = $load;
924: }
925: return ($spare_server,$lowest_load);
926: }
927:
928: # --------------------------- ask offload servers if user already has a session
929: sub find_existing_session {
930: my ($udom,$uname) = @_;
931: my $spareshash = &this_host_spares($udom);
932: if (ref($spareshash) eq 'HASH') {
933: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
934: foreach my $try_server (@{ $spareshash->{'primary'} }) {
935: return $try_server if (&has_user_session($try_server, $udom, $uname));
936: }
937: }
938: if (ref($spareshash->{'default'}) eq 'ARRAY') {
939: foreach my $try_server (@{ $spareshash->{'default'} }) {
940: return $try_server if (&has_user_session($try_server, $udom, $uname));
941: }
942: }
943: }
944: return;
945: }
946:
947: # -------------------------------- ask if server already has a session for user
948: sub has_user_session {
949: my ($lonid,$udom,$uname) = @_;
950: my $result = &reply(join(':','userhassession',
951: map {&escape($_)} ($udom,$uname)),$lonid);
952: return 1 if ($result eq 'ok');
953:
954: return 0;
955: }
956:
957: # --------- determine least loaded server in a user's domain which allows login
958:
959: sub choose_server {
960: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
961: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
962: my %servers = &get_servers($udom);
963: my $lowest_load = 30000;
964: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
965: if ($skiploadbal) {
966: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
967: unless (defined($cached)) {
968: my $cachetime = 60*60*24;
969: my %domconfig =
970: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
971: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
972: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
973: $cachetime);
974: }
975: }
976: }
977: foreach my $lonhost (keys(%servers)) {
978: if ($skiploadbal) {
979: if (ref($balancers) eq 'HASH') {
980: next if (exists($balancers->{$lonhost}));
981: }
982: }
983: my $loginvia;
984: if ($checkloginvia) {
985: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
986: if ($loginvia) {
987: my ($server,$path) = split(/:/,$loginvia);
988: ($login_host, $lowest_load) =
989: &compare_server_load($server, $login_host, $lowest_load, $required);
990: if ($login_host eq $server) {
991: $portal_path = $path;
992: $isredirect = 1;
993: }
994: } else {
995: ($login_host, $lowest_load) =
996: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
997: if ($login_host eq $lonhost) {
998: $portal_path = '';
999: $isredirect = '';
1000: }
1001: }
1002: } else {
1003: ($login_host, $lowest_load) =
1004: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1005: }
1006: }
1007: if ($login_host ne '') {
1008: $hostname = &hostname($login_host);
1009: }
1010: return ($login_host,$hostname,$portal_path,$isredirect);
1011: }
1012:
1013: # --------------------------------------------- Try to change a user's password
1014:
1015: sub changepass {
1016: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1017: $currentpass = &escape($currentpass);
1018: $newpass = &escape($newpass);
1019: my $lonhost = $perlvar{'lonHostID'};
1020: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1021: $server);
1022: if (! $answer) {
1023: &logthis("No reply on password change request to $server ".
1024: "by $uname in domain $udom.");
1025: } elsif ($answer =~ "^ok") {
1026: &logthis("$uname in $udom successfully changed their password ".
1027: "on $server.");
1028: } elsif ($answer =~ "^pwchange_failure") {
1029: &logthis("$uname in $udom was unable to change their password ".
1030: "on $server. The action was blocked by either lcpasswd ".
1031: "or pwchange");
1032: } elsif ($answer =~ "^non_authorized") {
1033: &logthis("$uname in $udom did not get their password correct when ".
1034: "attempting to change it on $server.");
1035: } elsif ($answer =~ "^auth_mode_error") {
1036: &logthis("$uname in $udom attempted to change their password despite ".
1037: "not being locally or internally authenticated on $server.");
1038: } elsif ($answer =~ "^unknown_user") {
1039: &logthis("$uname in $udom attempted to change their password ".
1040: "on $server but were unable to because $server is not ".
1041: "their home server.");
1042: } elsif ($answer =~ "^refused") {
1043: &logthis("$server refused to change $uname in $udom password because ".
1044: "it was sent an unencrypted request to change the password.");
1045: } elsif ($answer =~ "invalid_client") {
1046: &logthis("$server refused to change $uname in $udom password because ".
1047: "it was a reset by e-mail originating from an invalid server.");
1048: }
1049: return $answer;
1050: }
1051:
1052: # ----------------------- Try to determine user's current authentication scheme
1053:
1054: sub queryauthenticate {
1055: my ($uname,$udom)=@_;
1056: my $uhome=&homeserver($uname,$udom);
1057: if (!$uhome) {
1058: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1059: return 'no_host';
1060: }
1061: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1062: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1063: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1064: }
1065: return $answer;
1066: }
1067:
1068: # --------- Try to authenticate user from domain's lib servers (first this one)
1069:
1070: sub authenticate {
1071: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1072: $upass=&escape($upass);
1073: $uname= &LONCAPA::clean_username($uname);
1074: my $uhome=&homeserver($uname,$udom,1);
1075: my $newhome;
1076: if ((!$uhome) || ($uhome eq 'no_host')) {
1077: # Maybe the machine was offline and only re-appeared again recently?
1078: &reconlonc();
1079: # One more
1080: $uhome=&homeserver($uname,$udom,1);
1081: if (($uhome eq 'no_host') && $checkdefauth) {
1082: if (defined(&domain($udom,'primary'))) {
1083: $newhome=&domain($udom,'primary');
1084: }
1085: if ($newhome ne '') {
1086: $uhome = $newhome;
1087: }
1088: }
1089: if ((!$uhome) || ($uhome eq 'no_host')) {
1090: &logthis("User $uname at $udom is unknown in authenticate");
1091: return 'no_host';
1092: }
1093: }
1094: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1095: if ($answer eq 'authorized') {
1096: if ($newhome) {
1097: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1098: return 'no_account_on_host';
1099: } else {
1100: &logthis("User $uname at $udom authorized by $uhome");
1101: return $uhome;
1102: }
1103: }
1104: if ($answer eq 'non_authorized') {
1105: &logthis("User $uname at $udom rejected by $uhome");
1106: return 'no_host';
1107: }
1108: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1109: return 'no_host';
1110: }
1111:
1112: sub can_host_session {
1113: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1114: my $canhost = 1;
1115: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1116: if (ref($remotesessions) eq 'HASH') {
1117: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1118: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1119: $canhost = 0;
1120: } else {
1121: $canhost = 1;
1122: }
1123: }
1124: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1125: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1126: $canhost = 1;
1127: } else {
1128: $canhost = 0;
1129: }
1130: }
1131: if ($canhost) {
1132: if ($remotesessions->{'version'} ne '') {
1133: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1134: if ($reqmajor ne '' && $reqminor ne '') {
1135: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1136: my $major = $1;
1137: my $minor = $2;
1138: if (($major < $reqmajor ) ||
1139: (($major == $reqmajor) && ($minor < $reqminor))) {
1140: $canhost = 0;
1141: }
1142: } else {
1143: $canhost = 0;
1144: }
1145: }
1146: }
1147: }
1148: }
1149: if ($canhost) {
1150: if (ref($hostedsessions) eq 'HASH') {
1151: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1152: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1153: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1154: if (($uint_dom ne '') &&
1155: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1156: $canhost = 0;
1157: } else {
1158: $canhost = 1;
1159: }
1160: }
1161: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1162: if (($uint_dom ne '') &&
1163: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1164: $canhost = 1;
1165: } else {
1166: $canhost = 0;
1167: }
1168: }
1169: }
1170: }
1171: return $canhost;
1172: }
1173:
1174: sub spare_can_host {
1175: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1176: my $canhost=1;
1177: my $try_server_hostname = &hostname($try_server);
1178: my $serverhomeID = &get_server_homeID($try_server_hostname);
1179: my $serverhomedom = &host_domain($serverhomeID);
1180: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1181: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1182: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1183: $canhost = 0;
1184: }
1185: }
1186: if (($canhost) && ($uint_dom)) {
1187: my @intdoms;
1188: my $internet_names = &get_internet_names($try_server);
1189: if (ref($internet_names) eq 'ARRAY') {
1190: @intdoms = @{$internet_names};
1191: }
1192: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1193: my $remoterev = &get_server_loncaparev(undef,$try_server);
1194: $canhost = &can_host_session($udom,$try_server,$remoterev,
1195: $remotesessions,
1196: $defdomdefaults{'hostedsessions'});
1197: }
1198: }
1199: return $canhost;
1200: }
1201:
1202: sub this_host_spares {
1203: my ($dom) = @_;
1204: my ($dom_in_use,$lonhost_in_use,$result);
1205: my @hosts = ¤t_machine_ids();
1206: foreach my $lonhost (@hosts) {
1207: if (&host_domain($lonhost) eq $dom) {
1208: $dom_in_use = $dom;
1209: $lonhost_in_use = $lonhost;
1210: last;
1211: }
1212: }
1213: if ($dom_in_use ne '') {
1214: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1215: }
1216: if (ref($result) ne 'HASH') {
1217: $lonhost_in_use = $perlvar{'lonHostID'};
1218: $dom_in_use = &host_domain($lonhost_in_use);
1219: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1220: if (ref($result) ne 'HASH') {
1221: $result = \%spareid;
1222: }
1223: }
1224: return $result;
1225: }
1226:
1227: sub spares_for_offload {
1228: my ($dom_in_use,$lonhost_in_use) = @_;
1229: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1230: if (defined($cached)) {
1231: return $result;
1232: } else {
1233: my $cachetime = 60*60*24;
1234: my %domconfig =
1235: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1236: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1237: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1238: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1239: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1240: }
1241: }
1242: }
1243: }
1244: return;
1245: }
1246:
1247: sub get_lonbalancer_config {
1248: my ($servers) = @_;
1249: my ($currbalancer,$currtargets);
1250: if (ref($servers) eq 'HASH') {
1251: foreach my $server (keys(%{$servers})) {
1252: my %what = (
1253: spareid => 1,
1254: perlvar => 1,
1255: );
1256: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1257: if ($result eq 'ok') {
1258: if (ref($returnhash) eq 'HASH') {
1259: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1260: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1261: $currbalancer = $server;
1262: $currtargets = {};
1263: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1264: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1265: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1266: }
1267: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1268: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1269: }
1270: }
1271: last;
1272: }
1273: }
1274: }
1275: }
1276: }
1277: }
1278: return ($currbalancer,$currtargets);
1279: }
1280:
1281: sub check_loadbalancing {
1282: my ($uname,$udom) = @_;
1283: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1284: $rule_in_effect,$offloadto,$otherserver);
1285: my $lonhost = $perlvar{'lonHostID'};
1286: my @hosts = ¤t_machine_ids();
1287: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1288: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1289: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1290: my $serverhomedom = &host_domain($lonhost);
1291:
1292: my $cachetime = 60*60*24;
1293:
1294: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1295: $dom_in_use = $udom;
1296: $homeintdom = 1;
1297: } else {
1298: $dom_in_use = $serverhomedom;
1299: }
1300: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1301: unless (defined($cached)) {
1302: my %domconfig =
1303: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1304: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1305: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1306: }
1307: }
1308: if (ref($result) eq 'HASH') {
1309: ($is_balancer,$currtargets,$currrules) =
1310: &check_balancer_result($result,@hosts);
1311: if ($is_balancer) {
1312: if (ref($currrules) eq 'HASH') {
1313: if ($homeintdom) {
1314: if ($uname ne '') {
1315: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1316: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1317: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1318: $rule_in_effect = $currrules->{'_LC_author'};
1319: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1320: $rule_in_effect = $currrules->{'_LC_adv'}
1321: }
1322: }
1323: if ($rule_in_effect eq '') {
1324: my %userenv = &userenvironment($udom,$uname,'inststatus');
1325: if ($userenv{'inststatus'} ne '') {
1326: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1327: my ($othertitle,$usertypes,$types) =
1328: &Apache::loncommon::sorted_inst_types($udom);
1329: if (ref($types) eq 'ARRAY') {
1330: foreach my $type (@{$types}) {
1331: if (grep(/^\Q$type\E$/,@statuses)) {
1332: if (exists($currrules->{$type})) {
1333: $rule_in_effect = $currrules->{$type};
1334: }
1335: }
1336: }
1337: }
1338: } else {
1339: if (exists($currrules->{'default'})) {
1340: $rule_in_effect = $currrules->{'default'};
1341: }
1342: }
1343: }
1344: } else {
1345: if (exists($currrules->{'default'})) {
1346: $rule_in_effect = $currrules->{'default'};
1347: }
1348: }
1349: } else {
1350: if ($currrules->{'_LC_external'} ne '') {
1351: $rule_in_effect = $currrules->{'_LC_external'};
1352: }
1353: }
1354: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1355: $uname,$udom);
1356: }
1357: }
1358: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1359: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1360: unless (defined($cached)) {
1361: my %domconfig =
1362: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1363: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1364: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1365: }
1366: }
1367: if (ref($result) eq 'HASH') {
1368: ($is_balancer,$currtargets,$currrules) =
1369: &check_balancer_result($result,@hosts);
1370: if ($is_balancer) {
1371: if (ref($currrules) eq 'HASH') {
1372: if ($currrules->{'_LC_internetdom'} ne '') {
1373: $rule_in_effect = $currrules->{'_LC_internetdom'};
1374: }
1375: }
1376: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1377: $uname,$udom);
1378: }
1379: } else {
1380: if ($perlvar{'lonBalancer'} eq 'yes') {
1381: $is_balancer = 1;
1382: $offloadto = &this_host_spares($dom_in_use);
1383: }
1384: }
1385: } else {
1386: if ($perlvar{'lonBalancer'} eq 'yes') {
1387: $is_balancer = 1;
1388: $offloadto = &this_host_spares($dom_in_use);
1389: }
1390: }
1391: if ($is_balancer) {
1392: my $lowest_load = 30000;
1393: if (ref($offloadto) eq 'HASH') {
1394: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1395: foreach my $try_server (@{$offloadto->{'primary'}}) {
1396: ($otherserver,$lowest_load) =
1397: &compare_server_load($try_server,$otherserver,$lowest_load);
1398: }
1399: }
1400: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1401:
1402: if (!$found_server) {
1403: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1404: foreach my $try_server (@{$offloadto->{'default'}}) {
1405: ($otherserver,$lowest_load) =
1406: &compare_server_load($try_server,$otherserver,$lowest_load);
1407: }
1408: }
1409: }
1410: } elsif (ref($offloadto) eq 'ARRAY') {
1411: if (@{$offloadto} == 1) {
1412: $otherserver = $offloadto->[0];
1413: } elsif (@{$offloadto} > 1) {
1414: foreach my $try_server (@{$offloadto}) {
1415: ($otherserver,$lowest_load) =
1416: &compare_server_load($try_server,$otherserver,$lowest_load);
1417: }
1418: }
1419: }
1420: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1421: $is_balancer = 0;
1422: if ($uname ne '' && $udom ne '') {
1423: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1424:
1425: &appenv({'user.loadbalexempt' => $lonhost,
1426: 'user.loadbalcheck.time' => time});
1427: }
1428: }
1429: }
1430: }
1431: return ($is_balancer,$otherserver);
1432: }
1433:
1434: sub check_balancer_result {
1435: my ($result,@hosts) = @_;
1436: my ($is_balancer,$currtargets,$currrules);
1437: if (ref($result) eq 'HASH') {
1438: if ($result->{'lonhost'} ne '') {
1439: my $currbalancer = $result->{'lonhost'};
1440: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1441: $is_balancer = 1;
1442: $currtargets = $result->{'targets'};
1443: $currrules = $result->{'rules'};
1444: }
1445: } else {
1446: foreach my $key (keys(%{$result})) {
1447: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1448: (ref($result->{$key}) eq 'HASH')) {
1449: $is_balancer = 1;
1450: $currrules = $result->{$key}{'rules'};
1451: $currtargets = $result->{$key}{'targets'};
1452: last;
1453: }
1454: }
1455: }
1456: }
1457: return ($is_balancer,$currtargets,$currrules);
1458: }
1459:
1460: sub get_loadbalancer_targets {
1461: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1462: my $offloadto;
1463: if ($rule_in_effect eq 'none') {
1464: return [$perlvar{'lonHostID'}];
1465: } elsif ($rule_in_effect eq '') {
1466: $offloadto = $currtargets;
1467: } else {
1468: if ($rule_in_effect eq 'homeserver') {
1469: my $homeserver = &homeserver($uname,$udom);
1470: if ($homeserver ne 'no_host') {
1471: $offloadto = [$homeserver];
1472: }
1473: } elsif ($rule_in_effect eq 'externalbalancer') {
1474: my %domconfig =
1475: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1476: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1477: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1478: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1479: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1480: }
1481: }
1482: } else {
1483: my %servers = &internet_dom_servers($udom);
1484: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1485: if (&hostname($remotebalancer) ne '') {
1486: $offloadto = [$remotebalancer];
1487: }
1488: }
1489: } elsif (&hostname($rule_in_effect) ne '') {
1490: $offloadto = [$rule_in_effect];
1491: }
1492: }
1493: return $offloadto;
1494: }
1495:
1496: sub internet_dom_servers {
1497: my ($dom) = @_;
1498: my (%uniqservers,%servers);
1499: my $primaryserver = &hostname(&domain($dom,'primary'));
1500: my @machinedoms = &machine_domains($primaryserver);
1501: foreach my $mdom (@machinedoms) {
1502: my %currservers = %servers;
1503: my %server = &get_servers($mdom);
1504: %servers = (%currservers,%server);
1505: }
1506: my %by_hostname;
1507: foreach my $id (keys(%servers)) {
1508: push(@{$by_hostname{$servers{$id}}},$id);
1509: }
1510: foreach my $hostname (sort(keys(%by_hostname))) {
1511: if (@{$by_hostname{$hostname}} > 1) {
1512: my $match = 0;
1513: foreach my $id (@{$by_hostname{$hostname}}) {
1514: if (&host_domain($id) eq $dom) {
1515: $uniqservers{$id} = $hostname;
1516: $match = 1;
1517: }
1518: }
1519: unless ($match) {
1520: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1521: }
1522: } else {
1523: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1524: }
1525: }
1526: return %uniqservers;
1527: }
1528:
1529: # ---------------------- Find the homebase for a user from domain's lib servers
1530:
1531: my %homecache;
1532: sub homeserver {
1533: my ($uname,$udom,$ignoreBadCache)=@_;
1534: my $index="$uname:$udom";
1535:
1536: if (exists($homecache{$index})) { return $homecache{$index}; }
1537:
1538: my %servers = &get_servers($udom,'library');
1539: foreach my $tryserver (keys(%servers)) {
1540: next if ($ignoreBadCache ne 'true' &&
1541: exists($badServerCache{$tryserver}));
1542:
1543: my $answer=reply("home:$udom:$uname",$tryserver);
1544: if ($answer eq 'found') {
1545: delete($badServerCache{$tryserver});
1546: return $homecache{$index}=$tryserver;
1547: } elsif ($answer eq 'no_host') {
1548: $badServerCache{$tryserver}=1;
1549: }
1550: }
1551: return 'no_host';
1552: }
1553:
1554: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1555:
1556: sub idget {
1557: my ($udom,$idsref,$namespace)=@_;
1558: my %returnhash=();
1559: my @ids=();
1560: if (ref($idsref) eq 'ARRAY') {
1561: @ids = @{$idsref};
1562: } else {
1563: return %returnhash;
1564: }
1565: if ($namespace eq '') {
1566: $namespace = 'ids';
1567: }
1568:
1569: my %servers = &get_servers($udom,'library');
1570: foreach my $tryserver (keys(%servers)) {
1571: my $idlist=join('&', map { &escape($_); } @ids);
1572: if ($namespace eq 'ids') {
1573: $idlist=~tr/A-Z/a-z/;
1574: }
1575: my $reply;
1576: if ($namespace eq 'ids') {
1577: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1578: } else {
1579: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1580: }
1581: my @answer=();
1582: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1583: @answer=split(/\&/,$reply);
1584: } ;
1585: my $i;
1586: for ($i=0;$i<=$#ids;$i++) {
1587: if ($answer[$i]) {
1588: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1589: }
1590: }
1591: }
1592: return %returnhash;
1593: }
1594:
1595: # ------------------------------------- Find the IDs behind a list of usernames
1596:
1597: sub idrget {
1598: my ($udom,@unames)=@_;
1599: my %returnhash=();
1600: foreach my $uname (@unames) {
1601: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1602: }
1603: return %returnhash;
1604: }
1605:
1606: # Store away a list of names and associated student/employee IDs or clicker IDs
1607:
1608: sub idput {
1609: my ($udom,$idsref,$uhom,$namespace)=@_;
1610: my %servers=();
1611: my %ids=();
1612: my %byid = ();
1613: if (ref($idsref) eq 'HASH') {
1614: %ids=%{$idsref};
1615: }
1616: if ($namespace eq '') {
1617: $namespace = 'ids';
1618: }
1619: foreach my $uname (keys(%ids)) {
1620: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1621: if ($uhom eq '') {
1622: $uhom=&homeserver($uname,$udom);
1623: }
1624: if ($uhom ne 'no_host') {
1625: my $esc_unam=&escape($uname);
1626: if ($namespace eq 'ids') {
1627: my $id=&escape($ids{$uname});
1628: $id=~tr/A-Z/a-z/;
1629: my $esc_unam=&escape($uname);
1630: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1631: } else {
1632: my @currids = split(/,/,$ids{$uname});
1633: foreach my $id (@currids) {
1634: $byid{$uhom}{$id} .= $uname.',';
1635: }
1636: }
1637: }
1638: }
1639: if ($namespace eq 'clickers') {
1640: foreach my $server (keys(%byid)) {
1641: if (ref($byid{$server}) eq 'HASH') {
1642: foreach my $id (keys(%{$byid{$server}})) {
1643: $byid{$server} =~ s/,$//;
1644: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1645: }
1646: }
1647: }
1648: }
1649: foreach my $server (keys(%servers)) {
1650: $servers{$server} =~ s/\&$//;
1651: if ($namespace eq 'ids') {
1652: &critical('idput:'.$udom.':'.$servers{$server},$server);
1653: } else {
1654: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1655: }
1656: }
1657: }
1658:
1659: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1660:
1661: sub iddel {
1662: my ($udom,$idshashref,$uhome,$namespace)=@_;
1663: my %result=();
1664: my %ids=();
1665: my %byid = ();
1666: if (ref($idshashref) eq 'HASH') {
1667: %ids=%{$idshashref};
1668: } else {
1669: return %result;
1670: }
1671: if ($namespace eq '') {
1672: $namespace = 'ids';
1673: }
1674: my %servers=();
1675: while (my ($id,$unamestr) = each(%ids)) {
1676: if ($namespace eq 'ids') {
1677: my $uhom = $uhome;
1678: if ($uhom eq '') {
1679: $uhom=&homeserver($unamestr,$udom);
1680: }
1681: if ($uhom ne 'no_host') {
1682: $servers{$uhom}.='&'.&escape($id);
1683: }
1684: } else {
1685: my @curritems = split(/,/,$ids{$id});
1686: foreach my $uname (@curritems) {
1687: my $uhom = $uhome;
1688: if ($uhom eq '') {
1689: $uhom=&homeserver($uname,$udom);
1690: }
1691: if ($uhom ne 'no_host') {
1692: $byid{$uhom}{$id} .= $uname.',';
1693: }
1694: }
1695: }
1696: }
1697: if ($namespace eq 'clickers') {
1698: foreach my $server (keys(%byid)) {
1699: if (ref($byid{$server}) eq 'HASH') {
1700: foreach my $id (keys(%{$byid{$server}})) {
1701: $byid{$server}{$id} =~ s/,$//;
1702: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
1703: }
1704: }
1705: }
1706: }
1707: foreach my $server (keys(%servers)) {
1708: $servers{$server} =~ s/\&$//;
1709: if ($namespace eq 'ids') {
1710: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1711: } elsif ($namespace eq 'clickers') {
1712: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
1713: }
1714: }
1715: return %result;
1716: }
1717:
1718: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
1719:
1720: sub updateclickers {
1721: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
1722: my %clickers;
1723: if (ref($idshashref) eq 'HASH') {
1724: %clickers=%{$idshashref};
1725: } else {
1726: return;
1727: }
1728: my $items='';
1729: foreach my $item (keys(%clickers)) {
1730: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
1731: }
1732: $items=~s/\&$//;
1733: my $request = "updateclickers:$udom:$action:$items";
1734: if ($critical) {
1735: return &critical($request,$uhome);
1736: } else {
1737: return &reply($request,$uhome);
1738: }
1739: }
1740:
1741: # ------------------------------dump from db file owned by domainconfig user
1742: sub dump_dom {
1743: my ($namespace, $udom, $regexp) = @_;
1744:
1745: $udom ||= $env{'user.domain'};
1746:
1747: return () unless $udom;
1748:
1749: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1750: }
1751:
1752: # ------------------------------------------ get items from domain db files
1753:
1754: sub get_dom {
1755: my ($namespace,$storearr,$udom,$uhome)=@_;
1756: return if ($udom eq 'public');
1757: my $items='';
1758: foreach my $item (@$storearr) {
1759: $items.=&escape($item).'&';
1760: }
1761: $items=~s/\&$//;
1762: if (!$udom) {
1763: $udom=$env{'user.domain'};
1764: return if ($udom eq 'public');
1765: if (defined(&domain($udom,'primary'))) {
1766: $uhome=&domain($udom,'primary');
1767: } else {
1768: undef($uhome);
1769: }
1770: } else {
1771: if (!$uhome) {
1772: if (defined(&domain($udom,'primary'))) {
1773: $uhome=&domain($udom,'primary');
1774: }
1775: }
1776: }
1777: if ($udom && $uhome && ($uhome ne 'no_host')) {
1778: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1779: my %returnhash;
1780: if ($rep eq '' || $rep =~ /^error: 2 /) {
1781: return %returnhash;
1782: }
1783: my @pairs=split(/\&/,$rep);
1784: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1785: return @pairs;
1786: }
1787: my $i=0;
1788: foreach my $item (@$storearr) {
1789: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1790: $i++;
1791: }
1792: return %returnhash;
1793: } else {
1794: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1795: }
1796: }
1797:
1798: # -------------------------------------------- put items in domain db files
1799:
1800: sub put_dom {
1801: my ($namespace,$storehash,$udom,$uhome)=@_;
1802: if (!$udom) {
1803: $udom=$env{'user.domain'};
1804: if (defined(&domain($udom,'primary'))) {
1805: $uhome=&domain($udom,'primary');
1806: } else {
1807: undef($uhome);
1808: }
1809: } else {
1810: if (!$uhome) {
1811: if (defined(&domain($udom,'primary'))) {
1812: $uhome=&domain($udom,'primary');
1813: }
1814: }
1815: }
1816: if ($udom && $uhome && ($uhome ne 'no_host')) {
1817: my $items='';
1818: foreach my $item (keys(%$storehash)) {
1819: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1820: }
1821: $items=~s/\&$//;
1822: return &reply("putdom:$udom:$namespace:$items",$uhome);
1823: } else {
1824: &logthis("put_dom failed - no homeserver and/or domain");
1825: }
1826: }
1827:
1828: # --------------------- newput for items in db file owned by domainconfig user
1829: sub newput_dom {
1830: my ($namespace,$storehash,$udom) = @_;
1831: my $result;
1832: if (!$udom) {
1833: $udom=$env{'user.domain'};
1834: }
1835: if ($udom) {
1836: my $uname = &get_domainconfiguser($udom);
1837: $result = &newput($namespace,$storehash,$udom,$uname);
1838: }
1839: return $result;
1840: }
1841:
1842: # --------------------- delete for items in db file owned by domainconfig user
1843: sub del_dom {
1844: my ($namespace,$storearr,$udom)=@_;
1845: if (ref($storearr) eq 'ARRAY') {
1846: if (!$udom) {
1847: $udom=$env{'user.domain'};
1848: }
1849: if ($udom) {
1850: my $uname = &get_domainconfiguser($udom);
1851: return &del($namespace,$storearr,$udom,$uname);
1852: }
1853: }
1854: }
1855:
1856: # ----------------------------------construct domainconfig user for a domain
1857: sub get_domainconfiguser {
1858: my ($udom) = @_;
1859: return $udom.'-domainconfig';
1860: }
1861:
1862: sub retrieve_inst_usertypes {
1863: my ($udom) = @_;
1864: my (%returnhash,@order);
1865: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1866: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1867: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1868: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1869: } else {
1870: if (defined(&domain($udom,'primary'))) {
1871: my $uhome=&domain($udom,'primary');
1872: my $rep=&reply("inst_usertypes:$udom",$uhome);
1873: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1874: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1875: return (\%returnhash,\@order);
1876: }
1877: my ($hashitems,$orderitems) = split(/:/,$rep);
1878: my @pairs=split(/\&/,$hashitems);
1879: foreach my $item (@pairs) {
1880: my ($key,$value)=split(/=/,$item,2);
1881: $key = &unescape($key);
1882: next if ($key =~ /^error: 2 /);
1883: $returnhash{$key}=&thaw_unescape($value);
1884: }
1885: my @esc_order = split(/\&/,$orderitems);
1886: foreach my $item (@esc_order) {
1887: push(@order,&unescape($item));
1888: }
1889: } else {
1890: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1891: }
1892: return (\%returnhash,\@order);
1893: }
1894: }
1895:
1896: sub is_domainimage {
1897: my ($url) = @_;
1898: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1899: if (&domain($1) ne '') {
1900: return '1';
1901: }
1902: }
1903: return;
1904: }
1905:
1906: sub inst_directory_query {
1907: my ($srch) = @_;
1908: my $udom = $srch->{'srchdomain'};
1909: my %results;
1910: my $homeserver = &domain($udom,'primary');
1911: my $outcome;
1912: if ($homeserver ne '') {
1913: my $queryid=&reply("querysend:instdirsearch:".
1914: &escape($srch->{'srchby'}).':'.
1915: &escape($srch->{'srchterm'}).':'.
1916: &escape($srch->{'srchtype'}),$homeserver);
1917: my $host=&hostname($homeserver);
1918: if ($queryid !~/^\Q$host\E\_/) {
1919: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1920: return;
1921: }
1922: my $response = &get_query_reply($queryid);
1923: my $maxtries = 5;
1924: my $tries = 1;
1925: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1926: $response = &get_query_reply($queryid);
1927: $tries ++;
1928: }
1929:
1930: if (!&error($response) && $response ne 'refused') {
1931: if ($response eq 'unavailable') {
1932: $outcome = $response;
1933: } else {
1934: $outcome = 'ok';
1935: my @matches = split(/\n/,$response);
1936: foreach my $match (@matches) {
1937: my ($key,$value) = split(/=/,$match);
1938: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1939: }
1940: }
1941: }
1942: }
1943: return ($outcome,%results);
1944: }
1945:
1946: sub usersearch {
1947: my ($srch) = @_;
1948: my $dom = $srch->{'srchdomain'};
1949: my %results;
1950: my %libserv = &all_library();
1951: my $query = 'usersearch';
1952: foreach my $tryserver (keys(%libserv)) {
1953: if (&host_domain($tryserver) eq $dom) {
1954: my $host=&hostname($tryserver);
1955: my $queryid=
1956: &reply("querysend:".&escape($query).':'.
1957: &escape($srch->{'srchby'}).':'.
1958: &escape($srch->{'srchtype'}).':'.
1959: &escape($srch->{'srchterm'}),$tryserver);
1960: if ($queryid !~/^\Q$host\E\_/) {
1961: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1962: next;
1963: }
1964: my $reply = &get_query_reply($queryid);
1965: my $maxtries = 1;
1966: my $tries = 1;
1967: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1968: $reply = &get_query_reply($queryid);
1969: $tries ++;
1970: }
1971: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1972: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1973: } else {
1974: my @matches;
1975: if ($reply =~ /\n/) {
1976: @matches = split(/\n/,$reply);
1977: } else {
1978: @matches = split(/\&/,$reply);
1979: }
1980: foreach my $match (@matches) {
1981: my ($uname,$udom,%userhash);
1982: foreach my $entry (split(/:/,$match)) {
1983: my ($key,$value) =
1984: map {&unescape($_);} split(/=/,$entry);
1985: $userhash{$key} = $value;
1986: if ($key eq 'username') {
1987: $uname = $value;
1988: } elsif ($key eq 'domain') {
1989: $udom = $value;
1990: }
1991: }
1992: $results{$uname.':'.$udom} = \%userhash;
1993: }
1994: }
1995: }
1996: }
1997: return %results;
1998: }
1999:
2000: sub get_instuser {
2001: my ($udom,$uname,$id) = @_;
2002: my $homeserver = &domain($udom,'primary');
2003: my ($outcome,%results);
2004: if ($homeserver ne '') {
2005: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2006: &escape($id).':'.&escape($udom),$homeserver);
2007: my $host=&hostname($homeserver);
2008: if ($queryid !~/^\Q$host\E\_/) {
2009: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2010: return;
2011: }
2012: my $response = &get_query_reply($queryid);
2013: my $maxtries = 5;
2014: my $tries = 1;
2015: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2016: $response = &get_query_reply($queryid);
2017: $tries ++;
2018: }
2019: if (!&error($response) && $response ne 'refused') {
2020: if ($response eq 'unavailable') {
2021: $outcome = $response;
2022: } else {
2023: $outcome = 'ok';
2024: my @matches = split(/\n/,$response);
2025: foreach my $match (@matches) {
2026: my ($key,$value) = split(/=/,$match);
2027: $results{&unescape($key)} = &thaw_unescape($value);
2028: }
2029: }
2030: }
2031: }
2032: my %userinfo;
2033: if (ref($results{$uname}) eq 'HASH') {
2034: %userinfo = %{$results{$uname}};
2035: }
2036: return ($outcome,%userinfo);
2037: }
2038:
2039: sub get_multiple_instusers {
2040: my ($udom,$users,$caller) = @_;
2041: my ($outcome,$results);
2042: if (ref($users) eq 'HASH') {
2043: my $count = keys(%{$users});
2044: my $requested = &freeze_escape($users);
2045: my $homeserver = &domain($udom,'primary');
2046: if ($homeserver ne '') {
2047: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2048: my $host=&hostname($homeserver);
2049: if ($queryid !~/^\Q$host\E\_/) {
2050: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2051: ' for host: '.$homeserver.'in domain '.$udom);
2052: return ($outcome,$results);
2053: }
2054: my $response = &get_query_reply($queryid);
2055: my $maxtries = 5;
2056: if ($count > 100) {
2057: $maxtries = 1+int($count/20);
2058: }
2059: my $tries = 1;
2060: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2061: $response = &get_query_reply($queryid);
2062: $tries ++;
2063: }
2064: if ($response eq '') {
2065: $results = {};
2066: foreach my $key (keys(%{$users})) {
2067: my ($uname,$id);
2068: if ($caller eq 'id') {
2069: $id = $key;
2070: } else {
2071: $uname = $key;
2072: }
2073: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2074: $outcome = $resp;
2075: if ($resp eq 'ok') {
2076: %{$results} = (%{$results}, %info);
2077: } else {
2078: last;
2079: }
2080: }
2081: } elsif(!&error($response) && ($response ne 'refused')) {
2082: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2083: $outcome = $response;
2084: } else {
2085: ($outcome,my $userdata) = split(/=/,$response,2);
2086: if ($outcome eq 'ok') {
2087: $results = &thaw_unescape($userdata);
2088: }
2089: }
2090: }
2091: }
2092: }
2093: return ($outcome,$results);
2094: }
2095:
2096: sub inst_rulecheck {
2097: my ($udom,$uname,$id,$item,$rules) = @_;
2098: my %returnhash;
2099: if ($udom ne '') {
2100: if (ref($rules) eq 'ARRAY') {
2101: @{$rules} = map {&escape($_);} (@{$rules});
2102: my $rulestr = join(':',@{$rules});
2103: my $homeserver=&domain($udom,'primary');
2104: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2105: my $response;
2106: if ($item eq 'username') {
2107: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2108: ':'.&escape($uname).':'.$rulestr,
2109: $homeserver));
2110: } elsif ($item eq 'id') {
2111: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2112: ':'.&escape($id).':'.$rulestr,
2113: $homeserver));
2114: } elsif ($item eq 'selfcreate') {
2115: $response=&unescape(&reply('instselfcreatecheck:'.
2116: &escape($udom).':'.&escape($uname).
2117: ':'.$rulestr,$homeserver));
2118: }
2119: if ($response ne 'refused') {
2120: my @pairs=split(/\&/,$response);
2121: foreach my $item (@pairs) {
2122: my ($key,$value)=split(/=/,$item,2);
2123: $key = &unescape($key);
2124: next if ($key =~ /^error: 2 /);
2125: $returnhash{$key}=&thaw_unescape($value);
2126: }
2127: }
2128: }
2129: }
2130: }
2131: return %returnhash;
2132: }
2133:
2134: sub inst_userrules {
2135: my ($udom,$check) = @_;
2136: my (%ruleshash,@ruleorder);
2137: if ($udom ne '') {
2138: my $homeserver=&domain($udom,'primary');
2139: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2140: my $response;
2141: if ($check eq 'id') {
2142: $response=&reply('instidrules:'.&escape($udom),
2143: $homeserver);
2144: } elsif ($check eq 'email') {
2145: $response=&reply('instemailrules:'.&escape($udom),
2146: $homeserver);
2147: } else {
2148: $response=&reply('instuserrules:'.&escape($udom),
2149: $homeserver);
2150: }
2151: if (($response ne 'refused') && ($response ne 'error') &&
2152: ($response ne 'unknown_cmd') &&
2153: ($response ne 'no_such_host')) {
2154: my ($hashitems,$orderitems) = split(/:/,$response);
2155: my @pairs=split(/\&/,$hashitems);
2156: foreach my $item (@pairs) {
2157: my ($key,$value)=split(/=/,$item,2);
2158: $key = &unescape($key);
2159: next if ($key =~ /^error: 2 /);
2160: $ruleshash{$key}=&thaw_unescape($value);
2161: }
2162: my @esc_order = split(/\&/,$orderitems);
2163: foreach my $item (@esc_order) {
2164: push(@ruleorder,&unescape($item));
2165: }
2166: }
2167: }
2168: }
2169: return (\%ruleshash,\@ruleorder);
2170: }
2171:
2172: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2173:
2174: sub get_domain_defaults {
2175: my ($domain,$ignore_cache) = @_;
2176: return if (($domain eq '') || ($domain eq 'public'));
2177: my $cachetime = 60*60*24;
2178: unless ($ignore_cache) {
2179: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2180: if (defined($cached)) {
2181: if (ref($result) eq 'HASH') {
2182: return %{$result};
2183: }
2184: }
2185: }
2186: my %domdefaults;
2187: my %domconfig =
2188: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2189: 'requestcourses','inststatus',
2190: 'coursedefaults','usersessions',
2191: 'requestauthor','selfenrollment',
2192: 'coursecategories'],$domain);
2193: my @coursetypes = ('official','unofficial','community','textbook');
2194: if (ref($domconfig{'defaults'}) eq 'HASH') {
2195: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2196: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2197: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2198: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2199: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2200: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2201: } else {
2202: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2203: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2204: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2205: }
2206: if (ref($domconfig{'quotas'}) eq 'HASH') {
2207: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2208: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2209: } else {
2210: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2211: }
2212: my @usertools = ('aboutme','blog','webdav','portfolio');
2213: foreach my $item (@usertools) {
2214: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2215: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2216: }
2217: }
2218: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2219: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2220: }
2221: }
2222: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2223: foreach my $item ('official','unofficial','community','textbook') {
2224: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2225: }
2226: }
2227: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2228: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2229: }
2230: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2231: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2232: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2233: }
2234: }
2235: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2236: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2237: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2238: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2239: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2240: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2241: }
2242: foreach my $type (@coursetypes) {
2243: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2244: unless ($type eq 'community') {
2245: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2246: }
2247: }
2248: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2249: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2250: }
2251: if ($domdefaults{'postsubmit'} eq 'on') {
2252: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2253: $domdefaults{$type.'postsubtimeout'} =
2254: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2255: }
2256: }
2257: }
2258: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2259: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2260: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2261: if (@clonecodes) {
2262: $domdefaults{'canclone'} = join('+',@clonecodes);
2263: }
2264: }
2265: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2266: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2267: }
2268: }
2269: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2270: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2271: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2272: }
2273: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2274: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2275: }
2276: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2277: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2278: }
2279: }
2280: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2281: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2282: my @settings = ('types','registered','enroll_dates','access_dates','section',
2283: 'approval','limit');
2284: foreach my $type (@coursetypes) {
2285: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2286: my @mgrdc = ();
2287: foreach my $item (@settings) {
2288: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2289: push(@mgrdc,$item);
2290: }
2291: }
2292: if (@mgrdc) {
2293: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2294: }
2295: }
2296: }
2297: }
2298: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2299: foreach my $type (@coursetypes) {
2300: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2301: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2302: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2303: }
2304: }
2305: }
2306: }
2307: }
2308: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2309: $domdefaults{'catauth'} = 'std';
2310: $domdefaults{'catunauth'} = 'std';
2311: if ($domconfig{'coursecategories'}{'auth'}) {
2312: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2313: }
2314: if ($domconfig{'coursecategories'}{'unauth'}) {
2315: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2316: }
2317: }
2318: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2319: return %domdefaults;
2320: }
2321:
2322: # --------------------------------------------------- Assign a key to a student
2323:
2324: sub assign_access_key {
2325: #
2326: # a valid key looks like uname:udom#comments
2327: # comments are being appended
2328: #
2329: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2330: $kdom=
2331: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2332: $knum=
2333: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2334: $cdom=
2335: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2336: $cnum=
2337: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2338: $udom=$env{'user.name'} unless (defined($udom));
2339: $uname=$env{'user.domain'} unless (defined($uname));
2340: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2341: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2342: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2343: # assigned to this person
2344: # - this should not happen,
2345: # unless something went wrong
2346: # the first time around
2347: # ready to assign
2348: $logentry=$1.'; '.$logentry;
2349: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2350: $kdom,$knum) eq 'ok') {
2351: # key now belongs to user
2352: my $envkey='key.'.$cdom.'_'.$cnum;
2353: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2354: &appenv({'environment.'.$envkey => $ckey});
2355: return 'ok';
2356: } else {
2357: return
2358: 'error: Count not permanently assign key, will need to be re-entered later.';
2359: }
2360: } else {
2361: return 'error: Could not assign key, try again later.';
2362: }
2363: } elsif (!$existing{$ckey}) {
2364: # the key does not exist
2365: return 'error: The key does not exist';
2366: } else {
2367: # the key is somebody else's
2368: return 'error: The key is already in use';
2369: }
2370: }
2371:
2372: # ------------------------------------------ put an additional comment on a key
2373:
2374: sub comment_access_key {
2375: #
2376: # a valid key looks like uname:udom#comments
2377: # comments are being appended
2378: #
2379: my ($ckey,$cdom,$cnum,$logentry)=@_;
2380: $cdom=
2381: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2382: $cnum=
2383: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2384: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2385: if ($existing{$ckey}) {
2386: $existing{$ckey}.='; '.$logentry;
2387: # ready to assign
2388: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2389: $cdom,$cnum) eq 'ok') {
2390: return 'ok';
2391: } else {
2392: return 'error: Count not store comment.';
2393: }
2394: } else {
2395: # the key does not exist
2396: return 'error: The key does not exist';
2397: }
2398: }
2399:
2400: # ------------------------------------------------------ Generate a set of keys
2401:
2402: sub generate_access_keys {
2403: my ($number,$cdom,$cnum,$logentry)=@_;
2404: $cdom=
2405: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2406: $cnum=
2407: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2408: unless (&allowed('mky',$cdom)) { return 0; }
2409: unless (($cdom) && ($cnum)) { return 0; }
2410: if ($number>10000) { return 0; }
2411: sleep(2); # make sure don't get same seed twice
2412: srand(time()^($$+($$<<15))); # from "Programming Perl"
2413: my $total=0;
2414: for (my $i=1;$i<=$number;$i++) {
2415: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2416: sprintf("%lx",int(100000*rand)).'-'.
2417: sprintf("%lx",int(100000*rand));
2418: $newkey=~s/1/g/g; # folks mix up 1 and l
2419: $newkey=~s/0/h/g; # and also 0 and O
2420: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2421: if ($existing{$newkey}) {
2422: $i--;
2423: } else {
2424: if (&put('accesskeys',
2425: { $newkey => '# generated '.localtime().
2426: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2427: '; '.$logentry },
2428: $cdom,$cnum) eq 'ok') {
2429: $total++;
2430: }
2431: }
2432: }
2433: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2434: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2435: return $total;
2436: }
2437:
2438: # ------------------------------------------------------- Validate an accesskey
2439:
2440: sub validate_access_key {
2441: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2442: $cdom=
2443: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2444: $cnum=
2445: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2446: $udom=$env{'user.domain'} unless (defined($udom));
2447: $uname=$env{'user.name'} unless (defined($uname));
2448: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2449: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2450: }
2451:
2452: # ------------------------------------- Find the section of student in a course
2453: sub devalidate_getsection_cache {
2454: my ($udom,$unam,$courseid)=@_;
2455: my $hashid="$udom:$unam:$courseid";
2456: &devalidate_cache_new('getsection',$hashid);
2457: }
2458:
2459: sub courseid_to_courseurl {
2460: my ($courseid) = @_;
2461: #already url style courseid
2462: return $courseid if ($courseid =~ m{^/});
2463:
2464: if (exists($env{'course.'.$courseid.'.num'})) {
2465: my $cnum = $env{'course.'.$courseid.'.num'};
2466: my $cdom = $env{'course.'.$courseid.'.domain'};
2467: return "/$cdom/$cnum";
2468: }
2469:
2470: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2471: if (exists($courseinfo{'num'})) {
2472: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2473: }
2474:
2475: return undef;
2476: }
2477:
2478: sub getsection {
2479: my ($udom,$unam,$courseid)=@_;
2480: my $cachetime=1800;
2481:
2482: my $hashid="$udom:$unam:$courseid";
2483: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2484: if (defined($cached)) { return $result; }
2485:
2486: my %Pending;
2487: my %Expired;
2488: #
2489: # Each role can either have not started yet (pending), be active,
2490: # or have expired.
2491: #
2492: # If there is an active role, we are done.
2493: #
2494: # If there is more than one role which has not started yet,
2495: # choose the one which will start sooner
2496: # If there is one role which has not started yet, return it.
2497: #
2498: # If there is more than one expired role, choose the one which ended last.
2499: # If there is a role which has expired, return it.
2500: #
2501: $courseid = &courseid_to_courseurl($courseid);
2502: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2503: foreach my $key (keys(%roleshash)) {
2504: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2505: my $section=$1;
2506: if ($key eq $courseid.'_st') { $section=''; }
2507: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2508: my $now=time;
2509: if (defined($end) && $end && ($now > $end)) {
2510: $Expired{$end}=$section;
2511: next;
2512: }
2513: if (defined($start) && $start && ($now < $start)) {
2514: $Pending{$start}=$section;
2515: next;
2516: }
2517: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2518: }
2519: #
2520: # Presumedly there will be few matching roles from the above
2521: # loop and the sorting time will be negligible.
2522: if (scalar(keys(%Pending))) {
2523: my ($time) = sort {$a <=> $b} keys(%Pending);
2524: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2525: }
2526: if (scalar(keys(%Expired))) {
2527: my @sorted = sort {$a <=> $b} keys(%Expired);
2528: my $time = pop(@sorted);
2529: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2530: }
2531: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2532: }
2533:
2534: sub save_cache {
2535: &purge_remembered();
2536: #&Apache::loncommon::validate_page();
2537: undef(%env);
2538: undef($env_loaded);
2539: }
2540:
2541: my $to_remember=-1;
2542: my %remembered;
2543: my %accessed;
2544: my $kicks=0;
2545: my $hits=0;
2546: sub make_key {
2547: my ($name,$id) = @_;
2548: if (length($id) > 65
2549: && length(&escape($id)) > 200) {
2550: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2551: }
2552: return &escape($name.':'.$id);
2553: }
2554:
2555: sub devalidate_cache_new {
2556: my ($name,$id,$debug) = @_;
2557: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2558: $id=&make_key($name,$id);
2559: $memcache->delete($id);
2560: delete($remembered{$id});
2561: delete($accessed{$id});
2562: }
2563:
2564: sub is_cached_new {
2565: my ($name,$id,$debug) = @_;
2566: $id=&make_key($name,$id);
2567: if (exists($remembered{$id})) {
2568: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2569: $accessed{$id}=[&gettimeofday()];
2570: $hits++;
2571: return ($remembered{$id},1);
2572: }
2573: my $value = $memcache->get($id);
2574: if (!(defined($value))) {
2575: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2576: return (undef,undef);
2577: }
2578: if ($value eq '__undef__') {
2579: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2580: $value=undef;
2581: }
2582: &make_room($id,$value,$debug);
2583: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2584: return ($value,1);
2585: }
2586:
2587: sub do_cache_new {
2588: my ($name,$id,$value,$time,$debug) = @_;
2589: $id=&make_key($name,$id);
2590: my $setvalue=$value;
2591: if (!defined($setvalue)) {
2592: $setvalue='__undef__';
2593: }
2594: if (!defined($time) ) {
2595: $time=600;
2596: }
2597: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2598: my $result = $memcache->set($id,$setvalue,$time);
2599: if (! $result) {
2600: &logthis("caching of id -> $id failed");
2601: $memcache->disconnect_all();
2602: }
2603: # need to make a copy of $value
2604: &make_room($id,$value,$debug);
2605: return $value;
2606: }
2607:
2608: sub make_room {
2609: my ($id,$value,$debug)=@_;
2610:
2611: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2612: : $value;
2613: if ($to_remember<0) { return; }
2614: $accessed{$id}=[&gettimeofday()];
2615: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2616: my $to_kick;
2617: my $max_time=0;
2618: foreach my $other (keys(%accessed)) {
2619: if (&tv_interval($accessed{$other}) > $max_time) {
2620: $to_kick=$other;
2621: $max_time=&tv_interval($accessed{$other});
2622: }
2623: }
2624: delete($remembered{$to_kick});
2625: delete($accessed{$to_kick});
2626: $kicks++;
2627: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2628: return;
2629: }
2630:
2631: sub purge_remembered {
2632: #&logthis("Tossing ".scalar(keys(%remembered)));
2633: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2634: undef(%remembered);
2635: undef(%accessed);
2636: }
2637: # ------------------------------------- Read an entry from a user's environment
2638:
2639: sub userenvironment {
2640: my ($udom,$unam,@what)=@_;
2641: my $items;
2642: foreach my $item (@what) {
2643: $items.=&escape($item).'&';
2644: }
2645: $items=~s/\&$//;
2646: my %returnhash=();
2647: my $uhome = &homeserver($unam,$udom);
2648: unless ($uhome eq 'no_host') {
2649: my @answer=split(/\&/,
2650: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2651: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2652: return %returnhash;
2653: }
2654: my $i;
2655: for ($i=0;$i<=$#what;$i++) {
2656: $returnhash{$what[$i]}=&unescape($answer[$i]);
2657: }
2658: }
2659: return %returnhash;
2660: }
2661:
2662: # ---------------------------------------------------------- Get a studentphoto
2663: sub studentphoto {
2664: my ($udom,$unam,$ext) = @_;
2665: my $home=&Apache::lonnet::homeserver($unam,$udom);
2666: if (defined($env{'request.course.id'})) {
2667: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2668: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2669: return(&retrievestudentphoto($udom,$unam,$ext));
2670: } else {
2671: my ($result,$perm_reqd)=
2672: &Apache::lonnet::auto_photo_permission($unam,$udom);
2673: if ($result eq 'ok') {
2674: if (!($perm_reqd eq 'yes')) {
2675: return(&retrievestudentphoto($udom,$unam,$ext));
2676: }
2677: }
2678: }
2679: }
2680: } else {
2681: my ($result,$perm_reqd) =
2682: &Apache::lonnet::auto_photo_permission($unam,$udom);
2683: if ($result eq 'ok') {
2684: if (!($perm_reqd eq 'yes')) {
2685: return(&retrievestudentphoto($udom,$unam,$ext));
2686: }
2687: }
2688: }
2689: return '/adm/lonKaputt/lonlogo_broken.gif';
2690: }
2691:
2692: sub retrievestudentphoto {
2693: my ($udom,$unam,$ext,$type) = @_;
2694: my $home=&Apache::lonnet::homeserver($unam,$udom);
2695: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2696: if ($ret eq 'ok') {
2697: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2698: if ($type eq 'thumbnail') {
2699: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2700: }
2701: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2702: return $tokenurl;
2703: } else {
2704: if ($type eq 'thumbnail') {
2705: return '/adm/lonKaputt/genericstudent_tn.gif';
2706: } else {
2707: return '/adm/lonKaputt/lonlogo_broken.gif';
2708: }
2709: }
2710: }
2711:
2712: # -------------------------------------------------------------------- New chat
2713:
2714: sub chatsend {
2715: my ($newentry,$anon,$group)=@_;
2716: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2717: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2718: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2719: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2720: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2721: &escape($newentry)).':'.$group,$chome);
2722: }
2723:
2724: # ------------------------------------------ Find current version of a resource
2725:
2726: sub getversion {
2727: my $fname=&clutter(shift);
2728: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2729: return ¤tversion(&filelocation('',$fname));
2730: }
2731:
2732: sub currentversion {
2733: my $fname=shift;
2734: my $author=$fname;
2735: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2736: my ($udom,$uname)=split(/\//,$author);
2737: my $home=&homeserver($uname,$udom);
2738: if ($home eq 'no_host') {
2739: return -1;
2740: }
2741: my $answer=&reply("currentversion:$fname",$home);
2742: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2743: return -1;
2744: }
2745: return $answer;
2746: }
2747:
2748: #
2749: # Return special version number of resource if set by override, empty otherwise
2750: #
2751: sub usedversion {
2752: my $fname=shift;
2753: unless ($fname) { $fname=$env{'request.uri'}; }
2754: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2755: if ($urlversion) { return $urlversion; }
2756: return '';
2757: }
2758:
2759: # ----------------------------- Subscribe to a resource, return URL if possible
2760:
2761: sub subscribe {
2762: my $fname=shift;
2763: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2764: $fname=~s/[\n\r]//g;
2765: my $author=$fname;
2766: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2767: my ($udom,$uname)=split(/\//,$author);
2768: my $home=homeserver($uname,$udom);
2769: if ($home eq 'no_host') {
2770: return 'not_found';
2771: }
2772: my $answer=reply("sub:$fname",$home);
2773: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2774: $answer.=' by '.$home;
2775: }
2776: return $answer;
2777: }
2778:
2779: # -------------------------------------------------------------- Replicate file
2780:
2781: sub repcopy {
2782: my $filename=shift;
2783: $filename=~s/\/+/\//g;
2784: my $londocroot = $perlvar{'lonDocRoot'};
2785: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2786: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2787: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2788: $filename=~m{^/*(uploaded|editupload)/}) {
2789: return &repcopy_userfile($filename);
2790: }
2791: $filename=~s/[\n\r]//g;
2792: my $transname="$filename.in.transfer";
2793: # FIXME: this should flock
2794: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2795: my $remoteurl=subscribe($filename);
2796: if ($remoteurl =~ /^con_lost by/) {
2797: &logthis("Subscribe returned $remoteurl: $filename");
2798: return 'unavailable';
2799: } elsif ($remoteurl eq 'not_found') {
2800: #&logthis("Subscribe returned not_found: $filename");
2801: return 'not_found';
2802: } elsif ($remoteurl =~ /^rejected by/) {
2803: &logthis("Subscribe returned $remoteurl: $filename");
2804: return 'forbidden';
2805: } elsif ($remoteurl eq 'directory') {
2806: return 'ok';
2807: } else {
2808: my $author=$filename;
2809: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2810: my ($udom,$uname)=split(/\//,$author);
2811: my $home=homeserver($uname,$udom);
2812: unless ($home eq $perlvar{'lonHostID'}) {
2813: my @parts=split(/\//,$filename);
2814: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2815: if ($path ne "$londocroot/res") {
2816: &logthis("Malconfiguration for replication: $filename");
2817: return 'bad_request';
2818: }
2819: my $count;
2820: for ($count=5;$count<$#parts;$count++) {
2821: $path.="/$parts[$count]";
2822: if ((-e $path)!=1) {
2823: mkdir($path,0777);
2824: }
2825: }
2826: my $ua=new LWP::UserAgent;
2827: my $request=new HTTP::Request('GET',"$remoteurl");
2828: my $response=$ua->request($request,$transname);
2829: if ($response->is_error()) {
2830: unlink($transname);
2831: my $message=$response->status_line;
2832: &logthis("<font color=\"blue\">WARNING:"
2833: ." LWP get: $message: $filename</font>");
2834: return 'unavailable';
2835: } else {
2836: if ($remoteurl!~/\.meta$/) {
2837: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2838: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2839: if ($mresponse->is_error()) {
2840: unlink($filename.'.meta');
2841: &logthis(
2842: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2843: }
2844: }
2845: rename($transname,$filename);
2846: return 'ok';
2847: }
2848: }
2849: }
2850: }
2851:
2852: # ------------------------------------------------ Get server side include body
2853: sub ssi_body {
2854: my ($filelink,%form)=@_;
2855: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2856: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2857: }
2858: my $output='';
2859: my $response;
2860: if ($filelink=~/^https?\:/) {
2861: ($output,$response)=&externalssi($filelink);
2862: } else {
2863: $filelink .= $filelink=~/\?/ ? '&' : '?';
2864: $filelink .= 'inhibitmenu=yes';
2865: ($output,$response)=&ssi($filelink,%form);
2866: }
2867: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2868: $output=~s/^.*?\<body[^\>]*\>//si;
2869: $output=~s/\<\/body\s*\>.*?$//si;
2870: if (wantarray) {
2871: return ($output, $response);
2872: } else {
2873: return $output;
2874: }
2875: }
2876:
2877: # --------------------------------------------------------- Server Side Include
2878:
2879: sub absolute_url {
2880: my ($host_name) = @_;
2881: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2882: if ($host_name eq '') {
2883: $host_name = $ENV{'SERVER_NAME'};
2884: }
2885: return $protocol.$host_name;
2886: }
2887:
2888: #
2889: # Server side include.
2890: # Parameters:
2891: # fn Possibly encrypted resource name/id.
2892: # form Hash that describes how the rendering should be done
2893: # and other things.
2894: # Returns:
2895: # Scalar context: The content of the response.
2896: # Array context: 2 element list of the content and the full response object.
2897: #
2898: sub ssi {
2899:
2900: my ($fn,%form)=@_;
2901: my $ua=new LWP::UserAgent;
2902: my $request;
2903:
2904: $form{'no_update_last_known'}=1;
2905: &Apache::lonenc::check_encrypt(\$fn);
2906: if (%form) {
2907: $request=new HTTP::Request('POST',&absolute_url().$fn);
2908: $request->content(join('&',map {
2909: my $name = escape($_);
2910: "$name=" . ( ref($form{$_}) eq 'ARRAY'
2911: ? join("&$name=", map {escape($_) } @{$form{$_}})
2912: : &escape($form{$_}) );
2913: } keys(%form)));
2914: } else {
2915: $request=new HTTP::Request('GET',&absolute_url().$fn);
2916: }
2917:
2918: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2919: my $response= $ua->request($request);
2920: my $content = $response->content;
2921:
2922:
2923: if (wantarray) {
2924: return ($content, $response);
2925: } else {
2926: return $content;
2927: }
2928: }
2929:
2930: sub externalssi {
2931: my ($url)=@_;
2932: my $ua=new LWP::UserAgent;
2933: my $request=new HTTP::Request('GET',$url);
2934: my $response=$ua->request($request);
2935: if (wantarray) {
2936: return ($response->content, $response);
2937: } else {
2938: return $response->content;
2939: }
2940: }
2941:
2942: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2943:
2944: sub allowuploaded {
2945: my ($srcurl,$url)=@_;
2946: $url=&clutter(&declutter($url));
2947: my $dir=$url;
2948: $dir=~s/\/[^\/]+$//;
2949: my %httpref=();
2950: my $httpurl=&hreflocation('',$url);
2951: $httpref{'httpref.'.$httpurl}=$srcurl;
2952: &Apache::lonnet::appenv(\%httpref);
2953: }
2954:
2955: #
2956: # Determine if the current user should be able to edit a particular resource,
2957: # when viewing in course context.
2958: # (a) When viewing resource used to determine if "Edit" item is included in
2959: # Functions.
2960: # (b) When displaying folder contents in course editor, used to determine if
2961: # "Edit" link will be displayed alongside resource.
2962: #
2963: # input: six args -- filename (decluttered), course number, course domain,
2964: # url, symb (if registered) and group (if this is a group
2965: # item -- e.g., bulletin board, group page etc.).
2966: # output: array of five scalars --
2967: # $cfile -- url for file editing if editable on current server
2968: # $home -- homeserver of resource (i.e., for author if published,
2969: # or course if uploaded.).
2970: # $switchserver -- 1 if server switch will be needed.
2971: # $forceedit -- 1 if icon/link should be to go to edit mode
2972: # $forceview -- 1 if icon/link should be to go to view mode
2973: #
2974:
2975: sub can_edit_resource {
2976: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2977: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2978: #
2979: # For aboutme pages user can only edit his/her own.
2980: #
2981: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2982: my ($sdom,$sname) = ($1,$2);
2983: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2984: $home = $env{'user.home'};
2985: $cfile = $resurl;
2986: if ($env{'form.forceedit'}) {
2987: $forceview = 1;
2988: } else {
2989: $forceedit = 1;
2990: }
2991: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2992: } else {
2993: return;
2994: }
2995: }
2996:
2997: if ($env{'request.course.id'}) {
2998: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2999: if ($group ne '') {
3000: # if this is a group homepage or group bulletin board, check group privs
3001: my $allowed = 0;
3002: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3003: if ((&allowed('mdg',$env{'request.course.id'}.
3004: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3005: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3006: $allowed = 1;
3007: }
3008: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3009: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3010: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3011: $allowed = 1;
3012: }
3013: }
3014: if ($allowed) {
3015: $home=&homeserver($cnum,$cdom);
3016: if ($env{'form.forceedit'}) {
3017: $forceview = 1;
3018: } else {
3019: $forceedit = 1;
3020: }
3021: $cfile = $resurl;
3022: } else {
3023: return;
3024: }
3025: } else {
3026: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3027: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3028: return;
3029: }
3030: } elsif (!$crsedit) {
3031: #
3032: # No edit allowed where CC has switched to student role.
3033: #
3034: return;
3035: }
3036: }
3037: }
3038:
3039: if ($file ne '') {
3040: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3041: if (&is_course_upload($file,$cnum,$cdom)) {
3042: $uploaded = 1;
3043: $incourse = 1;
3044: if ($file =~/\.(htm|html|css|js|txt)$/) {
3045: $cfile = &hreflocation('',$file);
3046: if ($env{'form.forceedit'}) {
3047: $forceview = 1;
3048: } else {
3049: $forceedit = 1;
3050: }
3051: }
3052: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3053: $incourse = 1;
3054: if ($env{'form.forceedit'}) {
3055: $forceview = 1;
3056: } else {
3057: $forceedit = 1;
3058: }
3059: $cfile = $resurl;
3060: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3061: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3062: $incourse = 1;
3063: if ($env{'form.forceedit'}) {
3064: $forceview = 1;
3065: } else {
3066: $forceedit = 1;
3067: }
3068: $cfile = $resurl;
3069: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3070: $incourse = 1;
3071: $cfile = $resurl.'/smpedit';
3072: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3073: $incourse = 1;
3074: if ($env{'form.forceedit'}) {
3075: $forceview = 1;
3076: } else {
3077: $forceedit = 1;
3078: }
3079: $cfile = $resurl;
3080: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) {
3081: $incourse = 1;
3082: if ($env{'form.forceedit'}) {
3083: $forceview = 1;
3084: } else {
3085: $forceedit = 1;
3086: }
3087: $cfile = $resurl;
3088: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3089: $incourse = 1;
3090: if ($env{'form.forceedit'}) {
3091: $forceview = 1;
3092: } else {
3093: $forceedit = 1;
3094: }
3095: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3096: }
3097: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3098: my $template = '/res/lib/templates/simpleproblem.problem';
3099: if (&is_on_map($template)) {
3100: $incourse = 1;
3101: $forceview = 1;
3102: $cfile = $template;
3103: }
3104: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3105: $incourse = 1;
3106: if ($env{'form.forceedit'}) {
3107: $forceview = 1;
3108: } else {
3109: $forceedit = 1;
3110: }
3111: $cfile = $resurl;
3112: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3113: $incourse = 1;
3114: if ($env{'form.forceedit'}) {
3115: $forceview = 1;
3116: } else {
3117: $forceedit = 1;
3118: }
3119: $cfile = $resurl;
3120: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3121: $incourse = 1;
3122: $forceview = 1;
3123: if ($symb) {
3124: my ($map,$id,$res)=&decode_symb($symb);
3125: $env{'request.symb'} = $symb;
3126: $cfile = &clutter($res);
3127: } else {
3128: $cfile = $env{'form.suppurl'};
3129: my $escfile = &unescape($cfile);
3130: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/exttools?$}) {
3131: $cfile = '/adm/wrapper'.$escfile;
3132: } else {
3133: $escfile =~ s{^http://}{};
3134: $cfile = &escape("/adm/wrapper/ext/$escfile");
3135: }
3136: }
3137: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3138: if ($env{'form.forceedit'}) {
3139: $forceview = 1;
3140: } else {
3141: $forceedit = 1;
3142: }
3143: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3144: }
3145: }
3146: if ($uploaded || $incourse) {
3147: $home=&homeserver($cnum,$cdom);
3148: } elsif ($file !~ m{/$}) {
3149: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3150: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3151: # Check that the user has permission to edit this resource
3152: my $setpriv = 1;
3153: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3154: if (defined($cfudom)) {
3155: $home=&homeserver($cfuname,$cfudom);
3156: $cfile=$file;
3157: }
3158: }
3159: if (($cfile ne '') && (!$incourse || $uploaded) &&
3160: (($home ne '') && ($home ne 'no_host'))) {
3161: my @ids=¤t_machine_ids();
3162: unless (grep(/^\Q$home\E$/,@ids)) {
3163: $switchserver=1;
3164: }
3165: }
3166: }
3167: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3168: }
3169:
3170: sub is_course_upload {
3171: my ($file,$cnum,$cdom) = @_;
3172: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3173: $uploadpath =~ s{^\/}{};
3174: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3175: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3176: return 1;
3177: }
3178: return;
3179: }
3180:
3181: sub in_course {
3182: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3183: if ($hideprivileged) {
3184: my $skipuser;
3185: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3186: my @possdoms = ($cdom);
3187: if ($coursehash{'checkforpriv'}) {
3188: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3189: }
3190: if (&privileged($uname,$udom,\@possdoms)) {
3191: $skipuser = 1;
3192: if ($coursehash{'nothideprivileged'}) {
3193: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3194: my $user;
3195: if ($item =~ /:/) {
3196: $user = $item;
3197: } else {
3198: $user = join(':',split(/[\@]/,$item));
3199: }
3200: if ($user eq $uname.':'.$udom) {
3201: undef($skipuser);
3202: last;
3203: }
3204: }
3205: }
3206: if ($skipuser) {
3207: return 0;
3208: }
3209: }
3210: }
3211: $type ||= 'any';
3212: if (!defined($cdom) || !defined($cnum)) {
3213: my $cid = $env{'request.course.id'};
3214: $cdom = $env{'course.'.$cid.'.domain'};
3215: $cnum = $env{'course.'.$cid.'.num'};
3216: }
3217: my $typesref;
3218: if (($type eq 'any') || ($type eq 'all')) {
3219: $typesref = ['active','previous','future'];
3220: } elsif ($type eq 'previous' || $type eq 'future') {
3221: $typesref = [$type];
3222: }
3223: my %roles = &get_my_roles($uname,$udom,'userroles',
3224: $typesref,undef,[$cdom]);
3225: my ($tmp) = keys(%roles);
3226: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3227: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3228: if (@course_roles > 0) {
3229: return 1;
3230: }
3231: return 0;
3232: }
3233:
3234: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3235: # input: action, courseID, current domain, intended
3236: # path to file, source of file, instruction to parse file for objects,
3237: # ref to hash for embedded objects,
3238: # ref to hash for codebase of java objects.
3239: # reference to scalar to accommodate mime type determined
3240: # from File::MMagic if $parser = parse.
3241: #
3242: # output: url to file (if action was uploaddoc),
3243: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3244: #
3245: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3246: # course.
3247: #
3248: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3249: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3250: # course's home server.
3251: #
3252: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3253: # be copied from $source (current location) to
3254: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3255: # and will then be copied to
3256: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3257: # course's home server.
3258: #
3259: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3260: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3261: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3262: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3263: # in course's home server.
3264: #
3265:
3266: sub process_coursefile {
3267: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3268: $mimetype)=@_;
3269: my $fetchresult;
3270: my $home=&homeserver($docuname,$docudom);
3271: if ($action eq 'propagate') {
3272: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3273: $home);
3274: } else {
3275: my $fpath = '';
3276: my $fname = $file;
3277: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3278: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3279: my $filepath = &build_filepath($fpath);
3280: if ($action eq 'copy') {
3281: if ($source eq '') {
3282: $fetchresult = 'no source file';
3283: return $fetchresult;
3284: } else {
3285: my $destination = $filepath.'/'.$fname;
3286: rename($source,$destination);
3287: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3288: $home);
3289: }
3290: } elsif ($action eq 'uploaddoc') {
3291: open(my $fh,'>'.$filepath.'/'.$fname);
3292: print $fh $env{'form.'.$source};
3293: close($fh);
3294: if ($parser eq 'parse') {
3295: my $mm = new File::MMagic;
3296: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3297: if ($type eq 'text/html') {
3298: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3299: unless ($parse_result eq 'ok') {
3300: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3301: }
3302: }
3303: if (ref($mimetype)) {
3304: $$mimetype = $type;
3305: }
3306: }
3307: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3308: $home);
3309: if ($fetchresult eq 'ok') {
3310: return '/uploaded/'.$fpath.'/'.$fname;
3311: } else {
3312: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3313: ' to host '.$home.': '.$fetchresult);
3314: return '/adm/notfound.html';
3315: }
3316: }
3317: }
3318: unless ( $fetchresult eq 'ok') {
3319: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3320: ' to host '.$home.': '.$fetchresult);
3321: }
3322: return $fetchresult;
3323: }
3324:
3325: sub build_filepath {
3326: my ($fpath) = @_;
3327: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3328: unless ($fpath eq '') {
3329: my @parts=split('/',$fpath);
3330: foreach my $part (@parts) {
3331: $filepath.= '/'.$part;
3332: if ((-e $filepath)!=1) {
3333: mkdir($filepath,0777);
3334: }
3335: }
3336: }
3337: return $filepath;
3338: }
3339:
3340: sub store_edited_file {
3341: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3342: my $file = $primary_url;
3343: $file =~ s#^/uploaded/$docudom/$docuname/##;
3344: my $fpath = '';
3345: my $fname = $file;
3346: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3347: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3348: my $filepath = &build_filepath($fpath);
3349: open(my $fh,'>'.$filepath.'/'.$fname);
3350: print $fh $content;
3351: close($fh);
3352: my $home=&homeserver($docuname,$docudom);
3353: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3354: $home);
3355: if ($$fetchresult eq 'ok') {
3356: return '/uploaded/'.$fpath.'/'.$fname;
3357: } else {
3358: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3359: ' to host '.$home.': '.$$fetchresult);
3360: return '/adm/notfound.html';
3361: }
3362: }
3363:
3364: sub clean_filename {
3365: my ($fname,$args)=@_;
3366: # Replace Windows backslashes by forward slashes
3367: $fname=~s/\\/\//g;
3368: if (!$args->{'keep_path'}) {
3369: # Get rid of everything but the actual filename
3370: $fname=~s/^.*\/([^\/]+)$/$1/;
3371: }
3372: # Replace spaces by underscores
3373: $fname=~s/\s+/\_/g;
3374: # Replace all other weird characters by nothing
3375: $fname=~s{[^/\w\.\-]}{}g;
3376: # Replace all .\d. sequences with _\d. so they no longer look like version
3377: # numbers
3378: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3379: return $fname;
3380: }
3381: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3382: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3383: # image with the same aspect ratio as the original, but with dimensions which do
3384: # not exceed $resizewidth and $resizeheight.
3385:
3386: sub resizeImage {
3387: my ($img_path,$resizewidth,$resizeheight) = @_;
3388: my $ima = Image::Magick->new;
3389: my $resized;
3390: if (-e $img_path) {
3391: $ima->Read($img_path);
3392: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3393: my $width = $ima->Get('width');
3394: my $height = $ima->Get('height');
3395: if ($width > $resizewidth) {
3396: my $factor = $width/$resizewidth;
3397: my $newheight = $height/$factor;
3398: $ima->Scale(width=>$resizewidth,height=>$newheight);
3399: $resized = 1;
3400: }
3401: }
3402: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3403: my $width = $ima->Get('width');
3404: my $height = $ima->Get('height');
3405: if ($height > $resizeheight) {
3406: my $factor = $height/$resizeheight;
3407: my $newwidth = $width/$factor;
3408: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3409: $resized = 1;
3410: }
3411: }
3412: if ($resized) {
3413: $ima->Write($img_path);
3414: }
3415: }
3416: return;
3417: }
3418:
3419: # --------------- Take an uploaded file and put it into the userfiles directory
3420: # input: $formname - the contents of the file are in $env{"form.$formname"}
3421: # the desired filename is in $env{"form.$formname.filename"}
3422: # $context - possible values: coursedoc, existingfile, overwrite,
3423: # canceloverwrite, or ''.
3424: # if 'coursedoc': upload to the current course
3425: # if 'existingfile': write file to tmp/overwrites directory
3426: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3427: # $context is passed as argument to &finishuserfileupload
3428: # $subdir - directory in userfile to store the file into
3429: # $parser - instruction to parse file for objects ($parser = parse)
3430: # $allfiles - reference to hash for embedded objects
3431: # $codebase - reference to hash for codebase of java objects
3432: # $desuname - username for permanent storage of uploaded file
3433: # $dsetudom - domain for permanaent storage of uploaded file
3434: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3435: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3436: # $resizewidth - width (pixels) to which to resize uploaded image
3437: # $resizeheight - height (pixels) to which to resize uploaded image
3438: # $mimetype - reference to scalar to accommodate mime type determined
3439: # from File::MMagic.
3440: #
3441: # output: url of file in userspace, or error: <message>
3442: # or /adm/notfound.html if failure to upload occurse
3443:
3444: sub userfileupload {
3445: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3446: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3447: if (!defined($subdir)) { $subdir='unknown'; }
3448: my $fname=$env{'form.'.$formname.'.filename'};
3449: $fname=&clean_filename($fname);
3450: # See if there is anything left
3451: unless ($fname) { return 'error: no uploaded file'; }
3452: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3453: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3454: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3455: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3456: my $now = time;
3457: my $filepath;
3458: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3459: $filepath = 'tmp/helprequests/'.$now;
3460: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3461: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3462: '_'.$env{'user.domain'}.'/pending';
3463: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3464: my ($docuname,$docudom);
3465: if ($destudom) {
3466: $docudom = $destudom;
3467: } else {
3468: $docudom = $env{'user.domain'};
3469: }
3470: if ($destuname) {
3471: $docuname = $destuname;
3472: } else {
3473: $docuname = $env{'user.name'};
3474: }
3475: if (exists($env{'form.group'})) {
3476: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3477: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3478: }
3479: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3480: if ($context eq 'canceloverwrite') {
3481: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3482: if (-e $tempfile) {
3483: my @info = stat($tempfile);
3484: if ($info[9] eq $env{'form.timestamp'}) {
3485: unlink($tempfile);
3486: }
3487: }
3488: return;
3489: }
3490: }
3491: # Create the directory if not present
3492: my @parts=split(/\//,$filepath);
3493: my $fullpath = $perlvar{'lonDaemons'};
3494: for (my $i=0;$i<@parts;$i++) {
3495: $fullpath .= '/'.$parts[$i];
3496: if ((-e $fullpath)!=1) {
3497: mkdir($fullpath,0777);
3498: }
3499: }
3500: open(my $fh,'>'.$fullpath.'/'.$fname);
3501: print $fh $env{'form.'.$formname};
3502: close($fh);
3503: if ($context eq 'existingfile') {
3504: my @info = stat($fullpath.'/'.$fname);
3505: return ($fullpath.'/'.$fname,$info[9]);
3506: } else {
3507: return $fullpath.'/'.$fname;
3508: }
3509: }
3510: if ($subdir eq 'scantron') {
3511: $fname = 'scantron_orig_'.$fname;
3512: } else {
3513: $fname="$subdir/$fname";
3514: }
3515: if ($context eq 'coursedoc') {
3516: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3517: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3518: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3519: return &finishuserfileupload($docuname,$docudom,
3520: $formname,$fname,$parser,$allfiles,
3521: $codebase,$thumbwidth,$thumbheight,
3522: $resizewidth,$resizeheight,$context,$mimetype);
3523: } else {
3524: if ($env{'form.folder'}) {
3525: $fname=$env{'form.folder'}.'/'.$fname;
3526: }
3527: return &process_coursefile('uploaddoc',$docuname,$docudom,
3528: $fname,$formname,$parser,
3529: $allfiles,$codebase,$mimetype);
3530: }
3531: } elsif (defined($destuname)) {
3532: my $docuname=$destuname;
3533: my $docudom=$destudom;
3534: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3535: $parser,$allfiles,$codebase,
3536: $thumbwidth,$thumbheight,
3537: $resizewidth,$resizeheight,$context,$mimetype);
3538: } else {
3539: my $docuname=$env{'user.name'};
3540: my $docudom=$env{'user.domain'};
3541: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3542: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3543: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3544: }
3545: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3546: $parser,$allfiles,$codebase,
3547: $thumbwidth,$thumbheight,
3548: $resizewidth,$resizeheight,$context,$mimetype);
3549: }
3550: }
3551:
3552: sub finishuserfileupload {
3553: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3554: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3555: my $path=$docudom.'/'.$docuname.'/';
3556: my $filepath=$perlvar{'lonDocRoot'};
3557:
3558: my ($fnamepath,$file,$fetchthumb);
3559: $file=$fname;
3560: if ($fname=~m|/|) {
3561: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3562: $path.=$fnamepath.'/';
3563: }
3564: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3565: my $count;
3566: for ($count=4;$count<=$#parts;$count++) {
3567: $filepath.="/$parts[$count]";
3568: if ((-e $filepath)!=1) {
3569: mkdir($filepath,0777);
3570: }
3571: }
3572:
3573: # Save the file
3574: {
3575: if (!open(FH,'>'.$filepath.'/'.$file)) {
3576: &logthis('Failed to create '.$filepath.'/'.$file);
3577: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3578: return '/adm/notfound.html';
3579: }
3580: if ($context eq 'overwrite') {
3581: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3582: my $target = $filepath.'/'.$file;
3583: if (-e $source) {
3584: my @info = stat($source);
3585: if ($info[9] eq $env{'form.timestamp'}) {
3586: unless (&File::Copy::move($source,$target)) {
3587: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3588: return "Moving from $source failed";
3589: }
3590: } else {
3591: return "Temporary file: $source had unexpected date/time for last modification";
3592: }
3593: } else {
3594: return "Temporary file: $source missing";
3595: }
3596: } elsif (!print FH ($env{'form.'.$formname})) {
3597: &logthis('Failed to write to '.$filepath.'/'.$file);
3598: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3599: return '/adm/notfound.html';
3600: }
3601: close(FH);
3602: if ($resizewidth && $resizeheight) {
3603: my $mm = new File::MMagic;
3604: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3605: if ($mime_type =~ m{^image/}) {
3606: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3607: }
3608: }
3609: }
3610: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3611: if (ref($mimetype)) {
3612: if ($$mimetype eq '') {
3613: my $mm = new File::MMagic;
3614: my $type = $mm->checktype_filename($filepath.'/'.$file);
3615: $$mimetype = $type;
3616: }
3617: }
3618: }
3619: if ($parser eq 'parse') {
3620: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3621: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3622: $allfiles,$codebase);
3623: unless ($parse_result eq 'ok') {
3624: &logthis('Failed to parse '.$filepath.$file.
3625: ' for embedded media: '.$parse_result);
3626: }
3627: }
3628: }
3629: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3630: my $input = $filepath.'/'.$file;
3631: my $output = $filepath.'/'.'tn-'.$file;
3632: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3633: system("convert -sample $thumbsize $input $output");
3634: if (-e $filepath.'/'.'tn-'.$file) {
3635: $fetchthumb = 1;
3636: }
3637: }
3638:
3639: # Notify homeserver to grep it
3640: #
3641: my $docuhome=&homeserver($docuname,$docudom);
3642: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3643: if ($fetchresult eq 'ok') {
3644: if ($fetchthumb) {
3645: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3646: if ($thumbresult ne 'ok') {
3647: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3648: $docuhome.': '.$thumbresult);
3649: }
3650: }
3651: #
3652: # Return the URL to it
3653: return '/uploaded/'.$path.$file;
3654: } else {
3655: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3656: ': '.$fetchresult);
3657: return '/adm/notfound.html';
3658: }
3659: }
3660:
3661: sub extract_embedded_items {
3662: my ($fullpath,$allfiles,$codebase,$content) = @_;
3663: my @state = ();
3664: my (%lastids,%related,%shockwave,%flashvars);
3665: my %javafiles = (
3666: codebase => '',
3667: code => '',
3668: archive => ''
3669: );
3670: my %mediafiles = (
3671: src => '',
3672: movie => '',
3673: );
3674: my $p;
3675: if ($content) {
3676: $p = HTML::LCParser->new($content);
3677: } else {
3678: $p = HTML::LCParser->new($fullpath);
3679: }
3680: while (my $t=$p->get_token()) {
3681: if ($t->[0] eq 'S') {
3682: my ($tagname, $attr) = ($t->[1],$t->[2]);
3683: push(@state, $tagname);
3684: if (lc($tagname) eq 'allow') {
3685: &add_filetype($allfiles,$attr->{'src'},'src');
3686: }
3687: if (lc($tagname) eq 'img') {
3688: &add_filetype($allfiles,$attr->{'src'},'src');
3689: }
3690: if (lc($tagname) eq 'a') {
3691: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3692: &add_filetype($allfiles,$attr->{'href'},'href');
3693: }
3694: }
3695: if (lc($tagname) eq 'script') {
3696: my $src;
3697: if ($attr->{'archive'} =~ /\.jar$/i) {
3698: &add_filetype($allfiles,$attr->{'archive'},'archive');
3699: } else {
3700: if ($attr->{'src'} ne '') {
3701: $src = $attr->{'src'};
3702: &add_filetype($allfiles,$src,'src');
3703: }
3704: }
3705: my $text = $p->get_trimmed_text();
3706: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3707: my @swfargs = split(/,/,$1);
3708: foreach my $item (@swfargs) {
3709: $item =~ s/["']//g;
3710: $item =~ s/^\s+//;
3711: $item =~ s/\s+$//;
3712: }
3713: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3714: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3715: push(@{$related{$swfargs[0]}},$swfargs[2]);
3716: } else {
3717: $related{$swfargs[0]} = [$swfargs[2]];
3718: }
3719: }
3720: }
3721: }
3722: if (lc($tagname) eq 'link') {
3723: if (lc($attr->{'rel'}) eq 'stylesheet') {
3724: &add_filetype($allfiles,$attr->{'href'},'href');
3725: }
3726: }
3727: if (lc($tagname) eq 'object' ||
3728: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3729: foreach my $item (keys(%javafiles)) {
3730: $javafiles{$item} = '';
3731: }
3732: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3733: $lastids{lc($tagname)} = $attr->{'id'};
3734: }
3735: }
3736: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3737: my $name = lc($attr->{'name'});
3738: foreach my $item (keys(%javafiles)) {
3739: if ($name eq $item) {
3740: $javafiles{$item} = $attr->{'value'};
3741: last;
3742: }
3743: }
3744: my $pathfrom;
3745: foreach my $item (keys(%mediafiles)) {
3746: if ($name eq $item) {
3747: $pathfrom = $attr->{'value'};
3748: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3749: &add_filetype($allfiles,$pathfrom,$name);
3750: last;
3751: }
3752: }
3753: if ($name eq 'flashvars') {
3754: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3755: }
3756: if ($pathfrom ne '') {
3757: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3758: $pathfrom);
3759: }
3760: }
3761: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3762: foreach my $item (keys(%javafiles)) {
3763: if ($attr->{$item}) {
3764: $javafiles{$item} = $attr->{$item};
3765: last;
3766: }
3767: }
3768: foreach my $item (keys(%mediafiles)) {
3769: if ($attr->{$item}) {
3770: &add_filetype($allfiles,$attr->{$item},$item);
3771: last;
3772: }
3773: }
3774: if (lc($tagname) eq 'embed') {
3775: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3776: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3777: $attr->{'src'});
3778: }
3779: }
3780: }
3781: if (lc($tagname) eq 'iframe') {
3782: my $src = $attr->{'src'} ;
3783: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3784: &add_filetype($allfiles,$src,'src');
3785: } elsif ($src =~ m{^/}) {
3786: if ($env{'request.course.id'}) {
3787: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3788: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3789: my $url = &hreflocation('',$fullpath);
3790: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3791: my $relpath = $1;
3792: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3793: &add_filetype($allfiles,$1,'src');
3794: }
3795: }
3796: }
3797: }
3798: }
3799: if ($t->[4] =~ m{/>$}) {
3800: pop(@state);
3801: }
3802: } elsif ($t->[0] eq 'E') {
3803: my ($tagname) = ($t->[1]);
3804: if ($javafiles{'codebase'} ne '') {
3805: $javafiles{'codebase'} .= '/';
3806: }
3807: if (lc($tagname) eq 'applet' ||
3808: lc($tagname) eq 'object' ||
3809: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3810: ) {
3811: foreach my $item (keys(%javafiles)) {
3812: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3813: my $file=$javafiles{'codebase'}.$javafiles{$item};
3814: &add_filetype($allfiles,$file,$item);
3815: }
3816: }
3817: }
3818: pop @state;
3819: }
3820: }
3821: foreach my $id (sort(keys(%flashvars))) {
3822: if ($shockwave{$id} ne '') {
3823: my @pairs = split(/\&/,$flashvars{$id});
3824: foreach my $pair (@pairs) {
3825: my ($key,$value) = split(/\=/,$pair);
3826: if ($key eq 'thumb') {
3827: &add_filetype($allfiles,$value,$key);
3828: } elsif ($key eq 'content') {
3829: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3830: my ($ext) = ($value =~ /\.([^.]+)$/);
3831: if ($ext ne '') {
3832: &add_filetype($allfiles,$path.$value,$ext);
3833: }
3834: }
3835: }
3836: }
3837: }
3838: return 'ok';
3839: }
3840:
3841: sub add_filetype {
3842: my ($allfiles,$file,$type)=@_;
3843: if (exists($allfiles->{$file})) {
3844: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3845: push(@{$allfiles->{$file}}, &escape($type));
3846: }
3847: } else {
3848: @{$allfiles->{$file}} = (&escape($type));
3849: }
3850: }
3851:
3852: sub embedded_dependency {
3853: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3854: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3855: if (($identifier ne '') &&
3856: (ref($related->{$identifier}) eq 'ARRAY') &&
3857: ($pathfrom ne '')) {
3858: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3859: foreach my $dep (@{$related->{$identifier}}) {
3860: &add_filetype($allfiles,$path.$dep,'object');
3861: }
3862: }
3863: }
3864: return;
3865: }
3866:
3867: sub removeuploadedurl {
3868: my ($url)=@_;
3869: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3870: return &removeuserfile($uname,$udom,$fname);
3871: }
3872:
3873: sub removeuserfile {
3874: my ($docuname,$docudom,$fname)=@_;
3875: my $home=&homeserver($docuname,$docudom);
3876: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3877: if ($result eq 'ok') {
3878: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3879: my $metafile = $fname.'.meta';
3880: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3881: my $url = "/uploaded/$docudom/$docuname/$fname";
3882: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3883: my $sqlresult =
3884: &update_portfolio_table($docuname,$docudom,$file,
3885: 'portfolio_metadata',$group,
3886: 'delete');
3887: }
3888: }
3889: return $result;
3890: }
3891:
3892: sub mkdiruserfile {
3893: my ($docuname,$docudom,$dir)=@_;
3894: my $home=&homeserver($docuname,$docudom);
3895: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3896: }
3897:
3898: sub renameuserfile {
3899: my ($docuname,$docudom,$old,$new)=@_;
3900: my $home=&homeserver($docuname,$docudom);
3901: my $result = &reply("renameuserfile:$docudom:$docuname:".
3902: &escape("$old").':'.&escape("$new"),$home);
3903: if ($result eq 'ok') {
3904: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3905: my $oldmeta = $old.'.meta';
3906: my $newmeta = $new.'.meta';
3907: my $metaresult =
3908: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3909: my $url = "/uploaded/$docudom/$docuname/$old";
3910: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3911: my $sqlresult =
3912: &update_portfolio_table($docuname,$docudom,$file,
3913: 'portfolio_metadata',$group,
3914: 'delete');
3915: }
3916: }
3917: return $result;
3918: }
3919:
3920: # ------------------------------------------------------------------------- Log
3921:
3922: sub log {
3923: my ($dom,$nam,$hom,$what)=@_;
3924: return critical("log:$dom:$nam:$what",$hom);
3925: }
3926:
3927: # ------------------------------------------------------------------ Course Log
3928: #
3929: # This routine flushes several buffers of non-mission-critical nature
3930: #
3931:
3932: sub flushcourselogs {
3933: &logthis('Flushing log buffers');
3934: #
3935: # course logs
3936: # This is a log of all transactions in a course, which can be used
3937: # for data mining purposes
3938: #
3939: # It also collects the courseid database, which lists last transaction
3940: # times and course titles for all courseids
3941: #
3942: my %courseidbuffer=();
3943: foreach my $crsid (keys(%courselogs)) {
3944: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3945: &escape($courselogs{$crsid}),
3946: $coursehombuf{$crsid}) eq 'ok') {
3947: delete $courselogs{$crsid};
3948: } else {
3949: &logthis('Failed to flush log buffer for '.$crsid);
3950: if (length($courselogs{$crsid})>40000) {
3951: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3952: " exceeded maximum size, deleting.</font>");
3953: delete $courselogs{$crsid};
3954: }
3955: }
3956: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3957: 'description' => $coursedescrbuf{$crsid},
3958: 'inst_code' => $courseinstcodebuf{$crsid},
3959: 'type' => $coursetypebuf{$crsid},
3960: 'owner' => $courseownerbuf{$crsid},
3961: };
3962: }
3963: #
3964: # Write course id database (reverse lookup) to homeserver of courses
3965: # Is used in pickcourse
3966: #
3967: foreach my $crs_home (keys(%courseidbuffer)) {
3968: my $response = &courseidput(&host_domain($crs_home),
3969: $courseidbuffer{$crs_home},
3970: $crs_home,'timeonly');
3971: }
3972: #
3973: # File accesses
3974: # Writes to the dynamic metadata of resources to get hit counts, etc.
3975: #
3976: foreach my $entry (keys(%accesshash)) {
3977: if ($entry =~ /___count$/) {
3978: my ($dom,$name);
3979: ($dom,$name,undef)=
3980: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3981: if (! defined($dom) || $dom eq '' ||
3982: ! defined($name) || $name eq '') {
3983: my $cid = $env{'request.course.id'};
3984: $dom = $env{'request.'.$cid.'.domain'};
3985: $name = $env{'request.'.$cid.'.num'};
3986: }
3987: my $value = $accesshash{$entry};
3988: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3989: my %temphash=($url => $value);
3990: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3991: if ($result eq 'ok') {
3992: delete $accesshash{$entry};
3993: }
3994: } else {
3995: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3996: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3997: my %temphash=($entry => $accesshash{$entry});
3998: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3999: delete $accesshash{$entry};
4000: }
4001: }
4002: }
4003: #
4004: # Roles
4005: # Reverse lookup of user roles for course faculty/staff and co-authorship
4006: #
4007: foreach my $entry (keys(%userrolehash)) {
4008: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4009: split(/\:/,$entry);
4010: if (&Apache::lonnet::put('nohist_userroles',
4011: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4012: $rudom,$runame) eq 'ok') {
4013: delete $userrolehash{$entry};
4014: }
4015: }
4016: #
4017: # Reverse lookup of domain roles (dc, ad, li, sc, au)
4018: #
4019: my %domrolebuffer = ();
4020: foreach my $entry (keys(%domainrolehash)) {
4021: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4022: if ($domrolebuffer{$rudom}) {
4023: $domrolebuffer{$rudom}.='&'.&escape($entry).
4024: '='.&escape($domainrolehash{$entry});
4025: } else {
4026: $domrolebuffer{$rudom}.=&escape($entry).
4027: '='.&escape($domainrolehash{$entry});
4028: }
4029: delete $domainrolehash{$entry};
4030: }
4031: foreach my $dom (keys(%domrolebuffer)) {
4032: my %servers = &get_servers($dom,'library');
4033: foreach my $tryserver (keys(%servers)) {
4034: unless (&reply('domroleput:'.$dom.':'.
4035: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4036: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4037: }
4038: }
4039: }
4040: $dumpcount++;
4041: }
4042:
4043: sub courselog {
4044: my $what=shift;
4045: $what=time.':'.$what;
4046: unless ($env{'request.course.id'}) { return ''; }
4047: $coursedombuf{$env{'request.course.id'}}=
4048: $env{'course.'.$env{'request.course.id'}.'.domain'};
4049: $coursenumbuf{$env{'request.course.id'}}=
4050: $env{'course.'.$env{'request.course.id'}.'.num'};
4051: $coursehombuf{$env{'request.course.id'}}=
4052: $env{'course.'.$env{'request.course.id'}.'.home'};
4053: $coursedescrbuf{$env{'request.course.id'}}=
4054: $env{'course.'.$env{'request.course.id'}.'.description'};
4055: $courseinstcodebuf{$env{'request.course.id'}}=
4056: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4057: $courseownerbuf{$env{'request.course.id'}}=
4058: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4059: $coursetypebuf{$env{'request.course.id'}}=
4060: $env{'course.'.$env{'request.course.id'}.'.type'};
4061: if (defined $courselogs{$env{'request.course.id'}}) {
4062: $courselogs{$env{'request.course.id'}}.='&'.$what;
4063: } else {
4064: $courselogs{$env{'request.course.id'}}.=$what;
4065: }
4066: if (length($courselogs{$env{'request.course.id'}})>4048) {
4067: &flushcourselogs();
4068: }
4069: }
4070:
4071: sub courseacclog {
4072: my $fnsymb=shift;
4073: unless ($env{'request.course.id'}) { return ''; }
4074: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4075: if ($fnsymb=~/$LONCAPA::assess_re/) {
4076: $what.=':POST';
4077: # FIXME: Probably ought to escape things....
4078: foreach my $key (keys(%env)) {
4079: if ($key=~/^form\.(.*)/) {
4080: my $formitem = $1;
4081: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4082: $what.=':'.$formitem.'='.$env{$key};
4083: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4084: $what.=':'.$formitem.'='.$env{$key};
4085: }
4086: }
4087: }
4088: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4089: # FIXME: We should not be depending on a form parameter that someone
4090: # editing lonsearchcat.pm might change in the future.
4091: if ($env{'form.phase'} eq 'course_search') {
4092: $what.= ':POST';
4093: # FIXME: Probably ought to escape things....
4094: foreach my $element ('courseexp','crsfulltext','crsrelated',
4095: 'crsdiscuss') {
4096: $what.=':'.$element.'='.$env{'form.'.$element};
4097: }
4098: }
4099: }
4100: &courselog($what);
4101: }
4102:
4103: sub countacc {
4104: my $url=&declutter(shift);
4105: return if (! defined($url) || $url eq '');
4106: unless ($env{'request.course.id'}) { return ''; }
4107: #
4108: # Mark that this url was used in this course
4109: #
4110: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4111: #
4112: # Increase the access count for this resource in this child process
4113: #
4114: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4115: $accesshash{$key}++;
4116: }
4117:
4118: sub linklog {
4119: my ($from,$to)=@_;
4120: $from=&declutter($from);
4121: $to=&declutter($to);
4122: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4123: $accesshash{$to.'___'.$from.'___goto'}=1;
4124: }
4125:
4126: sub statslog {
4127: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4128: if ($users<2) { return; }
4129: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4130: 'course' => $env{'request.course.id'},
4131: 'sections' => '"all"',
4132: 'num_students' => $users,
4133: 'part' => $part,
4134: 'symb' => $symb,
4135: 'mean_tries' => $av_attempts,
4136: 'deg_of_diff' => $degdiff});
4137: foreach my $key (keys(%dynstore)) {
4138: $accesshash{$key}=$dynstore{$key};
4139: }
4140: }
4141:
4142: sub userrolelog {
4143: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4144: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4145: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4146: $userrolehash
4147: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4148: =$tend.':'.$tstart;
4149: }
4150: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4151: $userrolehash
4152: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4153: =$tend.':'.$tstart;
4154: }
4155: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
4156: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4157: $domainrolehash
4158: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4159: = $tend.':'.$tstart;
4160: }
4161: }
4162:
4163: sub courserolelog {
4164: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4165: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4166: my $cdom = $1;
4167: my $cnum = $2;
4168: my $sec = $3;
4169: my $namespace = 'rolelog';
4170: my %storehash = (
4171: role => $trole,
4172: start => $tstart,
4173: end => $tend,
4174: selfenroll => $selfenroll,
4175: context => $context,
4176: );
4177: if ($trole eq 'gr') {
4178: $namespace = 'groupslog';
4179: $storehash{'group'} = $sec;
4180: } else {
4181: $storehash{'section'} = $sec;
4182: }
4183: &write_log('course',$namespace,\%storehash,$delflag,$username,
4184: $domain,$cnum,$cdom);
4185: if (($trole ne 'st') || ($sec ne '')) {
4186: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4187: }
4188: }
4189: return;
4190: }
4191:
4192: sub domainrolelog {
4193: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4194: if ($area =~ m{^/($match_domain)/$}) {
4195: my $cdom = $1;
4196: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4197: my $namespace = 'rolelog';
4198: my %storehash = (
4199: role => $trole,
4200: start => $tstart,
4201: end => $tend,
4202: context => $context,
4203: );
4204: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4205: $domain,$domconfiguser,$cdom);
4206: }
4207: return;
4208:
4209: }
4210:
4211: sub coauthorrolelog {
4212: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4213: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4214: my $audom = $1;
4215: my $auname = $2;
4216: my $namespace = 'rolelog';
4217: my %storehash = (
4218: role => $trole,
4219: start => $tstart,
4220: end => $tend,
4221: context => $context,
4222: );
4223: &write_log('author',$namespace,\%storehash,$delflag,$username,
4224: $domain,$auname,$audom);
4225: }
4226: return;
4227: }
4228:
4229: sub get_course_adv_roles {
4230: my ($cid,$codes) = @_;
4231: $cid=$env{'request.course.id'} unless (defined($cid));
4232: my %coursehash=&coursedescription($cid);
4233: my $crstype = &Apache::loncommon::course_type($cid);
4234: my %nothide=();
4235: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4236: if ($user !~ /:/) {
4237: $nothide{join(':',split(/[\@]/,$user))}=1;
4238: } else {
4239: $nothide{$user}=1;
4240: }
4241: }
4242: my @possdoms = ($coursehash{'domain'});
4243: if ($coursehash{'checkforpriv'}) {
4244: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4245: }
4246: my %returnhash=();
4247: my %dumphash=
4248: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4249: my $now=time;
4250: my %privileged;
4251: foreach my $entry (keys(%dumphash)) {
4252: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4253: if (($tstart) && ($tstart<0)) { next; }
4254: if (($tend) && ($tend<$now)) { next; }
4255: if (($tstart) && ($now<$tstart)) { next; }
4256: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4257: if ($username eq '' || $domain eq '') { next; }
4258: if ((&privileged($username,$domain,\@possdoms)) &&
4259: (!$nothide{$username.':'.$domain})) { next; }
4260: if ($role eq 'cr') { next; }
4261: if ($codes) {
4262: if ($section) { $role .= ':'.$section; }
4263: if ($returnhash{$role}) {
4264: $returnhash{$role}.=','.$username.':'.$domain;
4265: } else {
4266: $returnhash{$role}=$username.':'.$domain;
4267: }
4268: } else {
4269: my $key=&plaintext($role,$crstype);
4270: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4271: if ($returnhash{$key}) {
4272: $returnhash{$key}.=','.$username.':'.$domain;
4273: } else {
4274: $returnhash{$key}=$username.':'.$domain;
4275: }
4276: }
4277: }
4278: return %returnhash;
4279: }
4280:
4281: sub get_my_roles {
4282: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4283: unless (defined($uname)) { $uname=$env{'user.name'}; }
4284: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4285: my (%dumphash,%nothide);
4286: if ($context eq 'userroles') {
4287: %dumphash = &dump('roles',$udom,$uname);
4288: } else {
4289: %dumphash = &dump('nohist_userroles',$udom,$uname);
4290: if ($hidepriv) {
4291: my %coursehash=&coursedescription($udom.'_'.$uname);
4292: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4293: if ($user !~ /:/) {
4294: $nothide{join(':',split(/[\@]/,$user))} = 1;
4295: } else {
4296: $nothide{$user} = 1;
4297: }
4298: }
4299: }
4300: }
4301: my %returnhash=();
4302: my $now=time;
4303: my %privileged;
4304: foreach my $entry (keys(%dumphash)) {
4305: my ($role,$tend,$tstart);
4306: if ($context eq 'userroles') {
4307: next if ($entry =~ /^rolesdef/);
4308: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4309: } else {
4310: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4311: }
4312: if (($tstart) && ($tstart<0)) { next; }
4313: my $status = 'active';
4314: if (($tend) && ($tend<=$now)) {
4315: $status = 'previous';
4316: }
4317: if (($tstart) && ($now<$tstart)) {
4318: $status = 'future';
4319: }
4320: if (ref($types) eq 'ARRAY') {
4321: if (!grep(/^\Q$status\E$/,@{$types})) {
4322: next;
4323: }
4324: } else {
4325: if ($status ne 'active') {
4326: next;
4327: }
4328: }
4329: my ($rolecode,$username,$domain,$section,$area);
4330: if ($context eq 'userroles') {
4331: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4332: (undef,$domain,$username,$section) = split(/\//,$area);
4333: } else {
4334: ($role,$username,$domain,$section) = split(/\:/,$entry);
4335: }
4336: if (ref($roledoms) eq 'ARRAY') {
4337: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4338: next;
4339: }
4340: }
4341: if (ref($roles) eq 'ARRAY') {
4342: if (!grep(/^\Q$role\E$/,@{$roles})) {
4343: if ($role =~ /^cr\//) {
4344: if (!grep(/^cr$/,@{$roles})) {
4345: next;
4346: }
4347: } elsif ($role =~ /^gr\//) {
4348: if (!grep(/^gr$/,@{$roles})) {
4349: next;
4350: }
4351: } else {
4352: next;
4353: }
4354: }
4355: }
4356: if ($hidepriv) {
4357: my @privroles = ('dc','su');
4358: if ($context eq 'userroles') {
4359: next if (grep(/^\Q$role\E$/,@privroles));
4360: } else {
4361: my $possdoms = [$domain];
4362: if (ref($roledoms) eq 'ARRAY') {
4363: push(@{$possdoms},@{$roledoms});
4364: }
4365: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4366: if (!$nothide{$username.':'.$domain}) {
4367: next;
4368: }
4369: }
4370: }
4371: }
4372: if ($withsec) {
4373: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4374: $tstart.':'.$tend;
4375: } else {
4376: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4377: }
4378: }
4379: return %returnhash;
4380: }
4381:
4382: # ----------------------------------------------------- Frontpage Announcements
4383: #
4384: #
4385:
4386: sub postannounce {
4387: my ($server,$text)=@_;
4388: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4389: unless ($text=~/\w/) { $text=''; }
4390: return &reply('setannounce:'.&escape($text),$server);
4391: }
4392:
4393: sub getannounce {
4394:
4395: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4396: my $announcement='';
4397: while (my $line = <$fh>) { $announcement .= $line; }
4398: close($fh);
4399: if ($announcement=~/\w/) {
4400: return
4401: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4402: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4403: } else {
4404: return '';
4405: }
4406: } else {
4407: return '';
4408: }
4409: }
4410:
4411: # ---------------------------------------------------------- Course ID routines
4412: # Deal with domain's nohist_courseid.db files
4413: #
4414:
4415: sub courseidput {
4416: my ($domain,$storehash,$coursehome,$caller) = @_;
4417: return unless (ref($storehash) eq 'HASH');
4418: my $outcome;
4419: if ($caller eq 'timeonly') {
4420: my $cids = '';
4421: foreach my $item (keys(%$storehash)) {
4422: $cids.=&escape($item).'&';
4423: }
4424: $cids=~s/\&$//;
4425: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4426: $coursehome);
4427: } else {
4428: my $items = '';
4429: foreach my $item (keys(%$storehash)) {
4430: $items.= &escape($item).'='.
4431: &freeze_escape($$storehash{$item}).'&';
4432: }
4433: $items=~s/\&$//;
4434: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4435: $coursehome);
4436: }
4437: if ($outcome eq 'unknown_cmd') {
4438: my $what;
4439: foreach my $cid (keys(%$storehash)) {
4440: $what .= &escape($cid).'=';
4441: foreach my $item ('description','inst_code','owner','type') {
4442: $what .= &escape($storehash->{$cid}{$item}).':';
4443: }
4444: $what =~ s/\:$/&/;
4445: }
4446: $what =~ s/\&$//;
4447: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4448: } else {
4449: return $outcome;
4450: }
4451: }
4452:
4453: sub courseiddump {
4454: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4455: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4456: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4457: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4458: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
4459: my $as_hash = 1;
4460: my %returnhash;
4461: if (!$domfilter) { $domfilter=''; }
4462: my %libserv = &all_library();
4463: foreach my $tryserver (keys(%libserv)) {
4464: if ( ( $hostidflag == 1
4465: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4466: || (!defined($hostidflag)) ) {
4467:
4468: if (($domfilter eq '') ||
4469: (&host_domain($tryserver) eq $domfilter)) {
4470: my $rep;
4471: if (grep { $_ eq $tryserver } current_machine_ids()) {
4472: $rep = LONCAPA::Lond::dump_course_id_handler(
4473: join(":", (&host_domain($tryserver), $sincefilter,
4474: &escape($descfilter), &escape($instcodefilter),
4475: &escape($ownerfilter), &escape($coursefilter),
4476: &escape($typefilter), &escape($regexp_ok),
4477: $as_hash, &escape($selfenrollonly),
4478: &escape($catfilter), $showhidden, $caller,
4479: &escape($cloner), &escape($cc_clone), $cloneonly,
4480: &escape($createdbefore), &escape($createdafter),
4481: &escape($creationcontext),$domcloner,$hasuniquecode,
4482: $reqcrsdom,&escape($reqinstcode))));
4483: } else {
4484: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4485: $sincefilter.':'.&escape($descfilter).':'.
4486: &escape($instcodefilter).':'.&escape($ownerfilter).
4487: ':'.&escape($coursefilter).':'.&escape($typefilter).
4488: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4489: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4490: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4491: &escape($cc_clone).':'.$cloneonly.':'.
4492: &escape($createdbefore).':'.&escape($createdafter).':'.
4493: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
4494: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
4495: }
4496:
4497: my @pairs=split(/\&/,$rep);
4498: foreach my $item (@pairs) {
4499: my ($key,$value)=split(/\=/,$item,2);
4500: $key = &unescape($key);
4501: next if ($key =~ /^error: 2 /);
4502: my $result = &thaw_unescape($value);
4503: if (ref($result) eq 'HASH') {
4504: $returnhash{$key}=$result;
4505: } else {
4506: my @responses = split(/:/,$value);
4507: my @items = ('description','inst_code','owner','type');
4508: for (my $i=0; $i<@responses; $i++) {
4509: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4510: }
4511: }
4512: }
4513: }
4514: }
4515: }
4516: return %returnhash;
4517: }
4518:
4519: sub courselastaccess {
4520: my ($cdom,$cnum,$hostidref) = @_;
4521: my %returnhash;
4522: if ($cdom && $cnum) {
4523: my $chome = &homeserver($cnum,$cdom);
4524: if ($chome ne 'no_host') {
4525: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4526: &extract_lastaccess(\%returnhash,$rep);
4527: }
4528: } else {
4529: if (!$cdom) { $cdom=''; }
4530: my %libserv = &all_library();
4531: foreach my $tryserver (keys(%libserv)) {
4532: if (ref($hostidref) eq 'ARRAY') {
4533: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4534: }
4535: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4536: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4537: &extract_lastaccess(\%returnhash,$rep);
4538: }
4539: }
4540: }
4541: return %returnhash;
4542: }
4543:
4544: sub extract_lastaccess {
4545: my ($returnhash,$rep) = @_;
4546: if (ref($returnhash) eq 'HASH') {
4547: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4548: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4549: $rep eq '') {
4550: my @pairs=split(/\&/,$rep);
4551: foreach my $item (@pairs) {
4552: my ($key,$value)=split(/\=/,$item,2);
4553: $key = &unescape($key);
4554: next if ($key =~ /^error: 2 /);
4555: $returnhash->{$key} = &thaw_unescape($value);
4556: }
4557: }
4558: }
4559: return;
4560: }
4561:
4562: # ---------------------------------------------------------- DC e-mail
4563:
4564: sub dcmailput {
4565: my ($domain,$msgid,$message,$server)=@_;
4566: my $status = &Apache::lonnet::critical(
4567: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4568: &escape($message),$server);
4569: return $status;
4570: }
4571:
4572: sub dcmaildump {
4573: my ($dom,$startdate,$enddate,$senders) = @_;
4574: my %returnhash=();
4575:
4576: if (defined(&domain($dom,'primary'))) {
4577: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4578: &escape($enddate).':';
4579: my @esc_senders=map { &escape($_)} @$senders;
4580: $cmd.=&escape(join('&',@esc_senders));
4581: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4582: my ($key,$value) = split(/\=/,$line,2);
4583: if (($key) && ($value)) {
4584: $returnhash{&unescape($key)} = &unescape($value);
4585: }
4586: }
4587: }
4588: return %returnhash;
4589: }
4590: # ---------------------------------------------------------- Domain roles
4591:
4592: sub get_domain_roles {
4593: my ($dom,$roles,$startdate,$enddate)=@_;
4594: if ((!defined($startdate)) || ($startdate eq '')) {
4595: $startdate = '.';
4596: }
4597: if ((!defined($enddate)) || ($enddate eq '')) {
4598: $enddate = '.';
4599: }
4600: my $rolelist;
4601: if (ref($roles) eq 'ARRAY') {
4602: $rolelist = join('&',@{$roles});
4603: }
4604: my %personnel = ();
4605:
4606: my %servers = &get_servers($dom,'library');
4607: foreach my $tryserver (keys(%servers)) {
4608: %{$personnel{$tryserver}}=();
4609: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4610: &escape($startdate).':'.
4611: &escape($enddate).':'.
4612: &escape($rolelist), $tryserver))) {
4613: my ($key,$value) = split(/\=/,$line,2);
4614: if (($key) && ($value)) {
4615: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4616: }
4617: }
4618: }
4619: return %personnel;
4620: }
4621:
4622: # ----------------------------------------------------------- Interval timing
4623:
4624: {
4625: # Caches needed for speedup of navmaps
4626: # We don't want to cache this for very long at all (5 seconds at most)
4627: #
4628: # The user for whom we cache
4629: my $cachedkey='';
4630: # The cached times for this user
4631: my %cachedtimes=();
4632: # When this was last done
4633: my $cachedtime='';
4634:
4635: sub load_all_first_access {
4636: my ($uname,$udom)=@_;
4637: if (($cachedkey eq $uname.':'.$udom) &&
4638: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4639: return;
4640: }
4641: $cachedtime=time;
4642: $cachedkey=$uname.':'.$udom;
4643: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4644: }
4645:
4646: sub get_first_access {
4647: my ($type,$argsymb,$argmap)=@_;
4648: my ($symb,$courseid,$udom,$uname)=&whichuser();
4649: if ($argsymb) { $symb=$argsymb; }
4650: my ($map,$id,$res)=&decode_symb($symb);
4651: if ($argmap) { $map = $argmap; }
4652: if ($type eq 'course') {
4653: $res='course';
4654: } elsif ($type eq 'map') {
4655: $res=&symbread($map);
4656: } else {
4657: $res=$symb;
4658: }
4659: &load_all_first_access($uname,$udom);
4660: return $cachedtimes{"$courseid\0$res"};
4661: }
4662:
4663: sub set_first_access {
4664: my ($type,$interval)=@_;
4665: my ($symb,$courseid,$udom,$uname)=&whichuser();
4666: my ($map,$id,$res)=&decode_symb($symb);
4667: if ($type eq 'course') {
4668: $res='course';
4669: } elsif ($type eq 'map') {
4670: $res=&symbread($map);
4671: } else {
4672: $res=$symb;
4673: }
4674: $cachedkey='';
4675: my $firstaccess=&get_first_access($type,$symb,$map);
4676: if (!$firstaccess) {
4677: my $start = time;
4678: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4679: $udom,$uname);
4680: if ($putres eq 'ok') {
4681: &put('timerinterval',{"$courseid\0$res"=>$interval},
4682: $udom,$uname);
4683: &appenv(
4684: {
4685: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4686: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4687: }
4688: );
4689: }
4690: return $putres;
4691: }
4692: return 'already_set';
4693: }
4694: }
4695:
4696: # --------------------------------------------- Set Expire Date for Spreadsheet
4697:
4698: sub expirespread {
4699: my ($uname,$udom,$stype,$usymb)=@_;
4700: my $cid=$env{'request.course.id'};
4701: if ($cid) {
4702: my $now=time;
4703: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4704: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4705: $env{'course.'.$cid.'.num'}.
4706: ':nohist_expirationdates:'.
4707: &escape($key).'='.$now,
4708: $env{'course.'.$cid.'.home'})
4709: }
4710: return 'ok';
4711: }
4712:
4713: # ----------------------------------------------------- Devalidate Spreadsheets
4714:
4715: sub devalidate {
4716: my ($symb,$uname,$udom)=@_;
4717: my $cid=$env{'request.course.id'};
4718: if ($cid) {
4719: # delete the stored spreadsheets for
4720: # - the student level sheet of this user in course's homespace
4721: # - the assessment level sheet for this resource
4722: # for this user in user's homespace
4723: # - current conditional state info
4724: my $key=$uname.':'.$udom.':';
4725: my $status=
4726: &del('nohist_calculatedsheets',
4727: [$key.'studentcalc:'],
4728: $env{'course.'.$cid.'.domain'},
4729: $env{'course.'.$cid.'.num'})
4730: .' '.
4731: &del('nohist_calculatedsheets_'.$cid,
4732: [$key.'assesscalc:'.$symb],$udom,$uname);
4733: unless ($status eq 'ok ok') {
4734: &logthis('Could not devalidate spreadsheet '.
4735: $uname.' at '.$udom.' for '.
4736: $symb.': '.$status);
4737: }
4738: &delenv('user.state.'.$cid);
4739: }
4740: }
4741:
4742: sub get_scalar {
4743: my ($string,$end) = @_;
4744: my $value;
4745: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4746: $value = $1;
4747: } elsif ($$string =~ s/^([^&]*?)&//) {
4748: $value = $1;
4749: }
4750: return &unescape($value);
4751: }
4752:
4753: sub array2str {
4754: my (@array) = @_;
4755: my $result=&arrayref2str(\@array);
4756: $result=~s/^__ARRAY_REF__//;
4757: $result=~s/__END_ARRAY_REF__$//;
4758: return $result;
4759: }
4760:
4761: sub arrayref2str {
4762: my ($arrayref) = @_;
4763: my $result='__ARRAY_REF__';
4764: foreach my $elem (@$arrayref) {
4765: if(ref($elem) eq 'ARRAY') {
4766: $result.=&arrayref2str($elem).'&';
4767: } elsif(ref($elem) eq 'HASH') {
4768: $result.=&hashref2str($elem).'&';
4769: } elsif(ref($elem)) {
4770: #print("Got a ref of ".(ref($elem))." skipping.");
4771: } else {
4772: $result.=&escape($elem).'&';
4773: }
4774: }
4775: $result=~s/\&$//;
4776: $result .= '__END_ARRAY_REF__';
4777: return $result;
4778: }
4779:
4780: sub hash2str {
4781: my (%hash) = @_;
4782: my $result=&hashref2str(\%hash);
4783: $result=~s/^__HASH_REF__//;
4784: $result=~s/__END_HASH_REF__$//;
4785: return $result;
4786: }
4787:
4788: sub hashref2str {
4789: my ($hashref)=@_;
4790: my $result='__HASH_REF__';
4791: foreach my $key (sort(keys(%$hashref))) {
4792: if (ref($key) eq 'ARRAY') {
4793: $result.=&arrayref2str($key).'=';
4794: } elsif (ref($key) eq 'HASH') {
4795: $result.=&hashref2str($key).'=';
4796: } elsif (ref($key)) {
4797: $result.='=';
4798: #print("Got a ref of ".(ref($key))." skipping.");
4799: } else {
4800: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4801: }
4802:
4803: if(ref($hashref->{$key}) eq 'ARRAY') {
4804: $result.=&arrayref2str($hashref->{$key}).'&';
4805: } elsif(ref($hashref->{$key}) eq 'HASH') {
4806: $result.=&hashref2str($hashref->{$key}).'&';
4807: } elsif(ref($hashref->{$key})) {
4808: $result.='&';
4809: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4810: } else {
4811: $result.=&escape($hashref->{$key}).'&';
4812: }
4813: }
4814: $result=~s/\&$//;
4815: $result .= '__END_HASH_REF__';
4816: return $result;
4817: }
4818:
4819: sub str2hash {
4820: my ($string)=@_;
4821: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4822: return %$hash;
4823: }
4824:
4825: sub str2hashref {
4826: my ($string) = @_;
4827:
4828: my %hash;
4829:
4830: if($string !~ /^__HASH_REF__/) {
4831: if (! ($string eq '' || !defined($string))) {
4832: $hash{'error'}='Not hash reference';
4833: }
4834: return (\%hash, $string);
4835: }
4836:
4837: $string =~ s/^__HASH_REF__//;
4838:
4839: while($string !~ /^__END_HASH_REF__/) {
4840: #key
4841: my $key='';
4842: if($string =~ /^__HASH_REF__/) {
4843: ($key, $string)=&str2hashref($string);
4844: if(defined($key->{'error'})) {
4845: $hash{'error'}='Bad data';
4846: return (\%hash, $string);
4847: }
4848: } elsif($string =~ /^__ARRAY_REF__/) {
4849: ($key, $string)=&str2arrayref($string);
4850: if($key->[0] eq 'Array reference error') {
4851: $hash{'error'}='Bad data';
4852: return (\%hash, $string);
4853: }
4854: } else {
4855: $string =~ s/^(.*?)=//;
4856: $key=&unescape($1);
4857: }
4858: $string =~ s/^=//;
4859:
4860: #value
4861: my $value='';
4862: if($string =~ /^__HASH_REF__/) {
4863: ($value, $string)=&str2hashref($string);
4864: if(defined($value->{'error'})) {
4865: $hash{'error'}='Bad data';
4866: return (\%hash, $string);
4867: }
4868: } elsif($string =~ /^__ARRAY_REF__/) {
4869: ($value, $string)=&str2arrayref($string);
4870: if($value->[0] eq 'Array reference error') {
4871: $hash{'error'}='Bad data';
4872: return (\%hash, $string);
4873: }
4874: } else {
4875: $value=&get_scalar(\$string,'__END_HASH_REF__');
4876: }
4877: $string =~ s/^&//;
4878:
4879: $hash{$key}=$value;
4880: }
4881:
4882: $string =~ s/^__END_HASH_REF__//;
4883:
4884: return (\%hash, $string);
4885: }
4886:
4887: sub str2array {
4888: my ($string)=@_;
4889: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4890: return @$array;
4891: }
4892:
4893: sub str2arrayref {
4894: my ($string) = @_;
4895: my @array;
4896:
4897: if($string !~ /^__ARRAY_REF__/) {
4898: if (! ($string eq '' || !defined($string))) {
4899: $array[0]='Array reference error';
4900: }
4901: return (\@array, $string);
4902: }
4903:
4904: $string =~ s/^__ARRAY_REF__//;
4905:
4906: while($string !~ /^__END_ARRAY_REF__/) {
4907: my $value='';
4908: if($string =~ /^__HASH_REF__/) {
4909: ($value, $string)=&str2hashref($string);
4910: if(defined($value->{'error'})) {
4911: $array[0] ='Array reference error';
4912: return (\@array, $string);
4913: }
4914: } elsif($string =~ /^__ARRAY_REF__/) {
4915: ($value, $string)=&str2arrayref($string);
4916: if($value->[0] eq 'Array reference error') {
4917: $array[0] ='Array reference error';
4918: return (\@array, $string);
4919: }
4920: } else {
4921: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4922: }
4923: $string =~ s/^&//;
4924:
4925: push(@array, $value);
4926: }
4927:
4928: $string =~ s/^__END_ARRAY_REF__//;
4929:
4930: return (\@array, $string);
4931: }
4932:
4933: # -------------------------------------------------------------------Temp Store
4934:
4935: sub tmpreset {
4936: my ($symb,$namespace,$domain,$stuname) = @_;
4937: if (!$symb) {
4938: $symb=&symbread();
4939: if (!$symb) { $symb= $env{'request.url'}; }
4940: }
4941: $symb=escape($symb);
4942:
4943: if (!$namespace) { $namespace=$env{'request.state'}; }
4944: $namespace=~s/\//\_/g;
4945: $namespace=~s/\W//g;
4946:
4947: if (!$domain) { $domain=$env{'user.domain'}; }
4948: if (!$stuname) { $stuname=$env{'user.name'}; }
4949: if ($domain eq 'public' && $stuname eq 'public') {
4950: $stuname=$ENV{'REMOTE_ADDR'};
4951: }
4952: my $path=LONCAPA::tempdir();
4953: my %hash;
4954: if (tie(%hash,'GDBM_File',
4955: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4956: &GDBM_WRCREAT(),0640)) {
4957: foreach my $key (keys(%hash)) {
4958: if ($key=~ /:$symb/) {
4959: delete($hash{$key});
4960: }
4961: }
4962: }
4963: }
4964:
4965: sub tmpstore {
4966: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4967:
4968: if (!$symb) {
4969: $symb=&symbread();
4970: if (!$symb) { $symb= $env{'request.url'}; }
4971: }
4972: $symb=escape($symb);
4973:
4974: if (!$namespace) {
4975: # I don't think we would ever want to store this for a course.
4976: # it seems this will only be used if we don't have a course.
4977: #$namespace=$env{'request.course.id'};
4978: #if (!$namespace) {
4979: $namespace=$env{'request.state'};
4980: #}
4981: }
4982: $namespace=~s/\//\_/g;
4983: $namespace=~s/\W//g;
4984: if (!$domain) { $domain=$env{'user.domain'}; }
4985: if (!$stuname) { $stuname=$env{'user.name'}; }
4986: if ($domain eq 'public' && $stuname eq 'public') {
4987: $stuname=$ENV{'REMOTE_ADDR'};
4988: }
4989: my $now=time;
4990: my %hash;
4991: my $path=LONCAPA::tempdir();
4992: if (tie(%hash,'GDBM_File',
4993: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4994: &GDBM_WRCREAT(),0640)) {
4995: $hash{"version:$symb"}++;
4996: my $version=$hash{"version:$symb"};
4997: my $allkeys='';
4998: foreach my $key (keys(%$storehash)) {
4999: $allkeys.=$key.':';
5000: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5001: }
5002: $hash{"$version:$symb:timestamp"}=$now;
5003: $allkeys.='timestamp';
5004: $hash{"$version:keys:$symb"}=$allkeys;
5005: if (untie(%hash)) {
5006: return 'ok';
5007: } else {
5008: return "error:$!";
5009: }
5010: } else {
5011: return "error:$!";
5012: }
5013: }
5014:
5015: # -----------------------------------------------------------------Temp Restore
5016:
5017: sub tmprestore {
5018: my ($symb,$namespace,$domain,$stuname) = @_;
5019:
5020: if (!$symb) {
5021: $symb=&symbread();
5022: if (!$symb) { $symb= $env{'request.url'}; }
5023: }
5024: $symb=escape($symb);
5025:
5026: if (!$namespace) { $namespace=$env{'request.state'}; }
5027:
5028: if (!$domain) { $domain=$env{'user.domain'}; }
5029: if (!$stuname) { $stuname=$env{'user.name'}; }
5030: if ($domain eq 'public' && $stuname eq 'public') {
5031: $stuname=$ENV{'REMOTE_ADDR'};
5032: }
5033: my %returnhash;
5034: $namespace=~s/\//\_/g;
5035: $namespace=~s/\W//g;
5036: my %hash;
5037: my $path=LONCAPA::tempdir();
5038: if (tie(%hash,'GDBM_File',
5039: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5040: &GDBM_READER(),0640)) {
5041: my $version=$hash{"version:$symb"};
5042: $returnhash{'version'}=$version;
5043: my $scope;
5044: for ($scope=1;$scope<=$version;$scope++) {
5045: my $vkeys=$hash{"$scope:keys:$symb"};
5046: my @keys=split(/:/,$vkeys);
5047: my $key;
5048: $returnhash{"$scope:keys"}=$vkeys;
5049: foreach $key (@keys) {
5050: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5051: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5052: }
5053: }
5054: if (!(untie(%hash))) {
5055: return "error:$!";
5056: }
5057: } else {
5058: return "error:$!";
5059: }
5060: return %returnhash;
5061: }
5062:
5063: # ----------------------------------------------------------------------- Store
5064:
5065: sub store {
5066: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5067: my $home='';
5068:
5069: if ($stuname) { $home=&homeserver($stuname,$domain); }
5070:
5071: $symb=&symbclean($symb);
5072: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5073:
5074: if (!$domain) { $domain=$env{'user.domain'}; }
5075: if (!$stuname) { $stuname=$env{'user.name'}; }
5076:
5077: &devalidate($symb,$stuname,$domain);
5078:
5079: $symb=escape($symb);
5080: if (!$namespace) {
5081: unless ($namespace=$env{'request.course.id'}) {
5082: return '';
5083: }
5084: }
5085: if (!$home) { $home=$env{'user.home'}; }
5086:
5087: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5088: $$storehash{'host'}=$perlvar{'lonHostID'};
5089:
5090: my $namevalue='';
5091: foreach my $key (keys(%$storehash)) {
5092: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5093: }
5094: $namevalue=~s/\&$//;
5095: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5096: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5097: }
5098:
5099: # -------------------------------------------------------------- Critical Store
5100:
5101: sub cstore {
5102: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5103: my $home='';
5104:
5105: if ($stuname) { $home=&homeserver($stuname,$domain); }
5106:
5107: $symb=&symbclean($symb);
5108: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5109:
5110: if (!$domain) { $domain=$env{'user.domain'}; }
5111: if (!$stuname) { $stuname=$env{'user.name'}; }
5112:
5113: &devalidate($symb,$stuname,$domain);
5114:
5115: $symb=escape($symb);
5116: if (!$namespace) {
5117: unless ($namespace=$env{'request.course.id'}) {
5118: return '';
5119: }
5120: }
5121: if (!$home) { $home=$env{'user.home'}; }
5122:
5123: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5124: $$storehash{'host'}=$perlvar{'lonHostID'};
5125:
5126: my $namevalue='';
5127: foreach my $key (keys(%$storehash)) {
5128: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5129: }
5130: $namevalue=~s/\&$//;
5131: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5132: return critical
5133: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5134: }
5135:
5136: # --------------------------------------------------------------------- Restore
5137:
5138: sub restore {
5139: my ($symb,$namespace,$domain,$stuname) = @_;
5140: my $home='';
5141:
5142: if ($stuname) { $home=&homeserver($stuname,$domain); }
5143:
5144: if (!$symb) {
5145: return if ($namespace eq 'courserequests');
5146: unless ($symb=escape(&symbread())) { return ''; }
5147: } else {
5148: unless ($namespace eq 'courserequests') {
5149: $symb=&escape(&symbclean($symb));
5150: }
5151: }
5152: if (!$namespace) {
5153: unless ($namespace=$env{'request.course.id'}) {
5154: return '';
5155: }
5156: }
5157: if (!$domain) { $domain=$env{'user.domain'}; }
5158: if (!$stuname) { $stuname=$env{'user.name'}; }
5159: if (!$home) { $home=$env{'user.home'}; }
5160: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5161:
5162: my %returnhash=();
5163: foreach my $line (split(/\&/,$answer)) {
5164: my ($name,$value)=split(/\=/,$line);
5165: $returnhash{&unescape($name)}=&thaw_unescape($value);
5166: }
5167: my $version;
5168: for ($version=1;$version<=$returnhash{'version'};$version++) {
5169: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5170: $returnhash{$item}=$returnhash{$version.':'.$item};
5171: }
5172: }
5173: return %returnhash;
5174: }
5175:
5176: # ---------------------------------------------------------- Course Description
5177: #
5178: #
5179:
5180: sub coursedescription {
5181: my ($courseid,$args)=@_;
5182: $courseid=~s/^\///;
5183: $courseid=~s/\_/\//g;
5184: my ($cdomain,$cnum)=split(/\//,$courseid);
5185: my $chome=&homeserver($cnum,$cdomain);
5186: my $normalid=$cdomain.'_'.$cnum;
5187: # need to always cache even if we get errors otherwise we keep
5188: # trying and trying and trying to get the course description.
5189: my %envhash=();
5190: my %returnhash=();
5191:
5192: my $expiretime=600;
5193: if ($env{'request.course.id'} eq $normalid) {
5194: $expiretime=120;
5195: }
5196:
5197: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5198: if (!$args->{'freshen_cache'}
5199: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5200: foreach my $key (keys(%env)) {
5201: next if ($key !~ /^\Q$prefix\E(.*)/);
5202: my ($setting) = $1;
5203: $returnhash{$setting} = $env{$key};
5204: }
5205: return %returnhash;
5206: }
5207:
5208: # get the data again
5209:
5210: if (!$args->{'one_time'}) {
5211: $envhash{'course.'.$normalid.'.last_cache'}=time;
5212: }
5213:
5214: if ($chome ne 'no_host') {
5215: %returnhash=&dump('environment',$cdomain,$cnum);
5216: if (!exists($returnhash{'con_lost'})) {
5217: my $username = $env{'user.name'}; # Defult username
5218: if(defined $args->{'user'}) {
5219: $username = $args->{'user'};
5220: }
5221: $returnhash{'home'}= $chome;
5222: $returnhash{'domain'} = $cdomain;
5223: $returnhash{'num'} = $cnum;
5224: if (!defined($returnhash{'type'})) {
5225: $returnhash{'type'} = 'Course';
5226: }
5227: while (my ($name,$value) = each %returnhash) {
5228: $envhash{'course.'.$normalid.'.'.$name}=$value;
5229: }
5230: $returnhash{'url'}=&clutter($returnhash{'url'});
5231: $returnhash{'fn'}=LONCAPA::tempdir() .
5232: $username.'_'.$cdomain.'_'.$cnum;
5233: $envhash{'course.'.$normalid.'.home'}=$chome;
5234: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5235: $envhash{'course.'.$normalid.'.num'}=$cnum;
5236: }
5237: }
5238: if (!$args->{'one_time'}) {
5239: &appenv(\%envhash);
5240: }
5241: return %returnhash;
5242: }
5243:
5244: sub update_released_required {
5245: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5246: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5247: $cid = $env{'request.course.id'};
5248: $cdom = $env{'course.'.$cid.'.domain'};
5249: $cnum = $env{'course.'.$cid.'.num'};
5250: $chome = $env{'course.'.$cid.'.home'};
5251: }
5252: if ($needsrelease) {
5253: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5254: my $needsupdate;
5255: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5256: $needsupdate = 1;
5257: } else {
5258: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5259: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5260: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5261: $needsupdate = 1;
5262: }
5263: }
5264: if ($needsupdate) {
5265: my %needshash = (
5266: 'internal.releaserequired' => $needsrelease,
5267: );
5268: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5269: if ($putresult eq 'ok') {
5270: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5271: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5272: if (ref($crsinfo{$cid}) eq 'HASH') {
5273: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5274: &courseidput($cdom,\%crsinfo,$chome,'notime');
5275: }
5276: }
5277: }
5278: }
5279: return;
5280: }
5281:
5282: # -------------------------------------------------See if a user is privileged
5283:
5284: sub privileged {
5285: my ($username,$domain,$possdomains,$possroles)=@_;
5286: my $now = time;
5287: my $roles;
5288: if (ref($possroles) eq 'ARRAY') {
5289: $roles = $possroles;
5290: } else {
5291: $roles = ['dc','su'];
5292: }
5293: if (ref($possdomains) eq 'ARRAY') {
5294: my %privileged = &privileged_by_domain($possdomains,$roles);
5295: foreach my $dom (@{$possdomains}) {
5296: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5297: (ref($privileged{$dom}) eq 'HASH')) {
5298: foreach my $role (@{$roles}) {
5299: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5300: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5301: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5302: return 1 unless (($end && $end < $now) ||
5303: ($start && $start > $now));
5304: }
5305: }
5306: }
5307: }
5308: }
5309: } else {
5310: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5311: my $now = time;
5312:
5313: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5314: my ($trole, $tend, $tstart) = split(/_/, $role);
5315: if (grep(/^\Q$trole\E$/,@{$roles})) {
5316: return 1 unless ($tend && $tend < $now)
5317: or ($tstart && $tstart > $now);
5318: }
5319: }
5320: }
5321: return 0;
5322: }
5323:
5324: sub privileged_by_domain {
5325: my ($domains,$roles) = @_;
5326: my %privileged = ();
5327: my $cachetime = 60*60*24;
5328: my $now = time;
5329: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5330: return %privileged;
5331: }
5332: foreach my $dom (@{$domains}) {
5333: next if (ref($privileged{$dom}) eq 'HASH');
5334: my $needroles;
5335: foreach my $role (@{$roles}) {
5336: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5337: if (defined($cached)) {
5338: if (ref($result) eq 'HASH') {
5339: $privileged{$dom}{$role} = $result;
5340: }
5341: } else {
5342: $needroles = 1;
5343: }
5344: }
5345: if ($needroles) {
5346: my %dompersonnel = &get_domain_roles($dom,$roles);
5347: $privileged{$dom} = {};
5348: foreach my $server (keys(%dompersonnel)) {
5349: if (ref($dompersonnel{$server}) eq 'HASH') {
5350: foreach my $item (keys(%{$dompersonnel{$server}})) {
5351: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5352: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5353: next if ($end && $end < $now);
5354: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5355: $dompersonnel{$server}{$item};
5356: }
5357: }
5358: }
5359: if (ref($privileged{$dom}) eq 'HASH') {
5360: foreach my $role (@{$roles}) {
5361: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5362: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5363: } else {
5364: my %hash = ();
5365: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5366: }
5367: }
5368: }
5369: }
5370: }
5371: return %privileged;
5372: }
5373:
5374: # -------------------------------------------------------- Get user privileges
5375:
5376: sub rolesinit {
5377: my ($domain, $username) = @_;
5378: my %userroles = ('user.login.time' => time);
5379: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5380:
5381: # firstaccess and timerinterval are related to timed maps/resources.
5382: # also, blocking can be triggered by an activating timer
5383: # it's saved in the user's %env.
5384: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5385: my %timerinterval = &dump('timerinterval', $domain, $username);
5386: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5387: %timerintchk, %timerintenv);
5388:
5389: foreach my $key (keys(%firstaccess)) {
5390: my ($cid, $rest) = split(/\0/, $key);
5391: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5392: }
5393:
5394: foreach my $key (keys(%timerinterval)) {
5395: my ($cid,$rest) = split(/\0/,$key);
5396: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5397: }
5398:
5399: my %allroles=();
5400: my %allgroups=();
5401:
5402: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5403: my $role = $rolesdump{$area};
5404: $area =~ s/\_\w\w$//;
5405:
5406: my ($trole, $tend, $tstart, $group_privs);
5407:
5408: if ($role =~ /^cr/) {
5409: # Custom role, defined by a user
5410: # e.g., user.role.cr/msu/smith/mynewrole
5411: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5412: $trole = $1;
5413: ($tend, $tstart) = split('_', $2);
5414: } else {
5415: $trole = $role;
5416: }
5417: } elsif ($role =~ m|^gr/|) {
5418: # Role of member in a group, defined within a course/community
5419: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5420: ($trole, $tend, $tstart) = split(/_/, $role);
5421: next if $tstart eq '-1';
5422: ($trole, $group_privs) = split(/\//, $trole);
5423: $group_privs = &unescape($group_privs);
5424: } else {
5425: # Just a normal role, defined in roles.tab
5426: ($trole, $tend, $tstart) = split(/_/,$role);
5427: }
5428:
5429: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5430: $username);
5431: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5432:
5433: # role expired or not available yet?
5434: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5435: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5436:
5437: next if $area eq '' or $trole eq '';
5438:
5439: my $spec = "$trole.$area";
5440: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5441:
5442: if ($trole =~ /^cr\//) {
5443: # Custom role, defined by a user
5444: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5445: } elsif ($trole eq 'gr') {
5446: # Role of a member in a group, defined within a course/community
5447: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5448: next;
5449: } else {
5450: # Normal role, defined in roles.tab
5451: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5452: }
5453:
5454: my $cid = $tdomain.'_'.$trest;
5455: unless ($firstaccchk{$cid}) {
5456: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5457: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5458: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5459: $coursetimerstarts{$cid}{$item};
5460: }
5461: }
5462: $firstaccchk{$cid} = 1;
5463: }
5464: unless ($timerintchk{$cid}) {
5465: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5466: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5467: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5468: $coursetimerintervals{$cid}{$item};
5469: }
5470: }
5471: $timerintchk{$cid} = 1;
5472: }
5473: }
5474:
5475: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5476: \%allroles, \%allgroups);
5477: $env{'user.adv'} = $userroles{'user.adv'};
5478:
5479: return (\%userroles,\%firstaccenv,\%timerintenv);
5480: }
5481:
5482: sub set_arearole {
5483: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5484: unless ($nolog) {
5485: # log the associated role with the area
5486: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5487: }
5488: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5489: }
5490:
5491: sub custom_roleprivs {
5492: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5493: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5494: my $homsvr = &homeserver($rauthor,$rdomain);
5495: if (&hostname($homsvr) ne '') {
5496: my ($rdummy,$roledef)=
5497: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5498: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5499: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5500: if (defined($syspriv)) {
5501: if ($trest =~ /^$match_community$/) {
5502: $syspriv =~ s/bre\&S//;
5503: }
5504: $$allroles{'cm./'}.=':'.$syspriv;
5505: $$allroles{$spec.'./'}.=':'.$syspriv;
5506: }
5507: if ($tdomain ne '') {
5508: if (defined($dompriv)) {
5509: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5510: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5511: }
5512: if (($trest ne '') && (defined($coursepriv))) {
5513: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5514: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5515: }
5516: }
5517: }
5518: }
5519: }
5520:
5521: sub group_roleprivs {
5522: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5523: my $access = 1;
5524: my $now = time;
5525: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5526: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5527: if ($access) {
5528: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5529: $$allgroups{$course}{$group} .=':'.$group_privs;
5530: }
5531: }
5532:
5533: sub standard_roleprivs {
5534: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5535: if (defined($pr{$trole.':s'})) {
5536: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5537: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5538: }
5539: if ($tdomain ne '') {
5540: if (defined($pr{$trole.':d'})) {
5541: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5542: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5543: }
5544: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5545: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5546: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5547: }
5548: }
5549: }
5550:
5551: sub set_userprivs {
5552: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5553: my $author=0;
5554: my $adv=0;
5555: my %grouproles = ();
5556: if (keys(%{$allgroups}) > 0) {
5557: my @groupkeys;
5558: foreach my $role (keys(%{$allroles})) {
5559: push(@groupkeys,$role);
5560: }
5561: if (ref($groups_roles) eq 'HASH') {
5562: foreach my $key (keys(%{$groups_roles})) {
5563: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5564: push(@groupkeys,$key);
5565: }
5566: }
5567: }
5568: if (@groupkeys > 0) {
5569: foreach my $role (@groupkeys) {
5570: my ($trole,$area,$sec,$extendedarea);
5571: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5572: $trole = $1;
5573: $area = $2;
5574: $sec = $3;
5575: $extendedarea = $area.$sec;
5576: if (exists($$allgroups{$area})) {
5577: foreach my $group (keys(%{$$allgroups{$area}})) {
5578: my $spec = $trole.'.'.$extendedarea;
5579: $grouproles{$spec.'.'.$area.'/'.$group} =
5580: $$allgroups{$area}{$group};
5581: }
5582: }
5583: }
5584: }
5585: }
5586: }
5587: foreach my $group (keys(%grouproles)) {
5588: $$allroles{$group} = $grouproles{$group};
5589: }
5590: foreach my $role (keys(%{$allroles})) {
5591: my %thesepriv;
5592: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5593: foreach my $item (split(/:/,$$allroles{$role})) {
5594: if ($item ne '') {
5595: my ($privilege,$restrictions)=split(/&/,$item);
5596: if ($restrictions eq '') {
5597: $thesepriv{$privilege}='F';
5598: } elsif ($thesepriv{$privilege} ne 'F') {
5599: $thesepriv{$privilege}.=$restrictions;
5600: }
5601: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5602: }
5603: }
5604: my $thesestr='';
5605: foreach my $priv (sort(keys(%thesepriv))) {
5606: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5607: }
5608: $userroles->{'user.priv.'.$role} = $thesestr;
5609: }
5610: return ($author,$adv);
5611: }
5612:
5613: sub role_status {
5614: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5615: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5616: my ($one,$two) = split(m{\./},$rolekey,2);
5617: (undef,undef,$$role) = split(/\./,$one,3);
5618: unless (!defined($$role) || $$role eq '') {
5619: $$where = '/'.$two;
5620: $$trolecode=$$role.'.'.$$where;
5621: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5622: $$tstatus='is';
5623: if ($$tstart && $$tstart>$update) {
5624: $$tstatus='future';
5625: if ($$tstart<$now) {
5626: if ($$tstart && $$tstart>$refresh) {
5627: if (($$where ne '') && ($$role ne '')) {
5628: my (%allroles,%allgroups,$group_privs,
5629: %groups_roles,@rolecodes);
5630: my %userroles = (
5631: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5632: );
5633: @rolecodes = ('cm');
5634: my $spec=$$role.'.'.$$where;
5635: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5636: if ($$role =~ /^cr\//) {
5637: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5638: push(@rolecodes,'cr');
5639: } elsif ($$role eq 'gr') {
5640: push(@rolecodes,$$role);
5641: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5642: $env{'user.name'});
5643: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5644: (undef,my $group_privs) = split(/\//,$trole);
5645: $group_privs = &unescape($group_privs);
5646: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5647: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5648: &get_groups_roles($tdomain,$trest,
5649: \%course_roles,\@rolecodes,
5650: \%groups_roles);
5651: } else {
5652: push(@rolecodes,$$role);
5653: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5654: }
5655: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5656: &appenv(\%userroles,\@rolecodes);
5657: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5658: }
5659: }
5660: $$tstatus = 'is';
5661: }
5662: }
5663: if ($$tend) {
5664: if ($$tend<$update) {
5665: $$tstatus='expired';
5666: } elsif ($$tend<$now) {
5667: $$tstatus='will_not';
5668: }
5669: }
5670: }
5671: }
5672: }
5673:
5674: sub get_groups_roles {
5675: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5676: return unless((ref($cdom_courseroles) eq 'HASH') &&
5677: (ref($rolecodes) eq 'ARRAY') &&
5678: (ref($groups_roles) eq 'HASH'));
5679: if (keys(%{$cdom_courseroles}) > 0) {
5680: my ($cnum) = ($rest =~ /^($match_courseid)/);
5681: if ($cdom ne '' && $cnum ne '') {
5682: foreach my $key (keys(%{$cdom_courseroles})) {
5683: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5684: my $crsrole = $1;
5685: my $crssec = $2;
5686: if ($crsrole =~ /^cr/) {
5687: unless (grep(/^cr$/,@{$rolecodes})) {
5688: push(@{$rolecodes},'cr');
5689: }
5690: } else {
5691: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5692: push(@{$rolecodes},$crsrole);
5693: }
5694: }
5695: my $rolekey = "$crsrole./$cdom/$cnum";
5696: if ($crssec ne '') {
5697: $rolekey .= "/$crssec";
5698: }
5699: $rolekey .= './';
5700: $groups_roles->{$rolekey} = $rolecodes;
5701: }
5702: }
5703: }
5704: }
5705: return;
5706: }
5707:
5708: sub delete_env_groupprivs {
5709: my ($where,$courseroles,$possroles) = @_;
5710: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5711: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5712: unless (ref($courseroles->{$udom}) eq 'HASH') {
5713: %{$courseroles->{$udom}} =
5714: &get_my_roles('','','userroles',['active'],
5715: $possroles,[$udom],1);
5716: }
5717: if (ref($courseroles->{$udom}) eq 'HASH') {
5718: foreach my $item (keys(%{$courseroles->{$udom}})) {
5719: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5720: my $area = '/'.$cdom.'/'.$cnum;
5721: my $privkey = "user.priv.$crsrole.$area";
5722: if ($crssec ne '') {
5723: $privkey .= '/'.$crssec;
5724: }
5725: $privkey .= ".$area/$group";
5726: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5727: }
5728: }
5729: return;
5730: }
5731:
5732: sub check_adhoc_privs {
5733: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5734: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5735: my $setprivs;
5736: if ($env{$cckey}) {
5737: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5738: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5739: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5740: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5741: $setprivs = 1;
5742: }
5743: } else {
5744: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5745: $setprivs = 1;
5746: }
5747: return $setprivs;
5748: }
5749:
5750: sub set_adhoc_privileges {
5751: # role can be cc or ca
5752: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5753: my $area = '/'.$dcdom.'/'.$pickedcourse;
5754: my $spec = $role.'.'.$area;
5755: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5756: $env{'user.name'},1);
5757: my %ccrole = ();
5758: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5759: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5760: &appenv(\%userroles,[$role,'cm']);
5761: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5762: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5763: &appenv( {'request.role' => $spec,
5764: 'request.role.domain' => $dcdom,
5765: 'request.course.sec' => ''
5766: }
5767: );
5768: my $tadv=0;
5769: if (&allowed('adv') eq 'F') { $tadv=1; }
5770: &appenv({'request.role.adv' => $tadv});
5771: }
5772: }
5773:
5774: # --------------------------------------------------------------- get interface
5775:
5776: sub get {
5777: my ($namespace,$storearr,$udomain,$uname)=@_;
5778: my $items='';
5779: foreach my $item (@$storearr) {
5780: $items.=&escape($item).'&';
5781: }
5782: $items=~s/\&$//;
5783: if (!$udomain) { $udomain=$env{'user.domain'}; }
5784: if (!$uname) { $uname=$env{'user.name'}; }
5785: my $uhome=&homeserver($uname,$udomain);
5786:
5787: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5788: my @pairs=split(/\&/,$rep);
5789: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5790: return @pairs;
5791: }
5792: my %returnhash=();
5793: my $i=0;
5794: foreach my $item (@$storearr) {
5795: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5796: $i++;
5797: }
5798: return %returnhash;
5799: }
5800:
5801: # --------------------------------------------------------------- del interface
5802:
5803: sub del {
5804: my ($namespace,$storearr,$udomain,$uname)=@_;
5805: my $items='';
5806: foreach my $item (@$storearr) {
5807: $items.=&escape($item).'&';
5808: }
5809:
5810: $items=~s/\&$//;
5811: if (!$udomain) { $udomain=$env{'user.domain'}; }
5812: if (!$uname) { $uname=$env{'user.name'}; }
5813: my $uhome=&homeserver($uname,$udomain);
5814: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5815: }
5816:
5817: # -------------------------------------------------------------- dump interface
5818:
5819: sub unserialize {
5820: my ($rep, $escapedkeys) = @_;
5821:
5822: return {} if $rep =~ /^error/;
5823:
5824: my %returnhash=();
5825: foreach my $item (split(/\&/,$rep)) {
5826: my ($key, $value) = split(/=/, $item, 2);
5827: $key = unescape($key) unless $escapedkeys;
5828: next if $key =~ /^error: 2 /;
5829: $returnhash{$key} = &thaw_unescape($value);
5830: }
5831: #return %returnhash;
5832: return \%returnhash;
5833: }
5834:
5835: # see Lond::dump_with_regexp
5836: # if $escapedkeys hash keys won't get unescaped.
5837: sub dump {
5838: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5839: if (!$udomain) { $udomain=$env{'user.domain'}; }
5840: if (!$uname) { $uname=$env{'user.name'}; }
5841: my $uhome=&homeserver($uname,$udomain);
5842:
5843: if ($regexp) {
5844: $regexp=&escape($regexp);
5845: } else {
5846: $regexp='.';
5847: }
5848: if (grep { $_ eq $uhome } current_machine_ids()) {
5849: # user is hosted on this machine
5850: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5851: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5852: return %{unserialize($reply, $escapedkeys)};
5853: }
5854: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5855: my @pairs=split(/\&/,$rep);
5856: my %returnhash=();
5857: if (!($rep =~ /^error/ )) {
5858: foreach my $item (@pairs) {
5859: my ($key,$value)=split(/=/,$item,2);
5860: $key = unescape($key) unless $escapedkeys;
5861: #$key = &unescape($key);
5862: next if ($key =~ /^error: 2 /);
5863: $returnhash{$key}=&thaw_unescape($value);
5864: }
5865: }
5866: return %returnhash;
5867: }
5868:
5869:
5870: # --------------------------------------------------------- dumpstore interface
5871:
5872: sub dumpstore {
5873: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5874: # same as dump but keys must be escaped. They may contain colon separated
5875: # lists of values that may themself contain colons (e.g. symbs).
5876: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5877: }
5878:
5879: # -------------------------------------------------------------- keys interface
5880:
5881: sub getkeys {
5882: my ($namespace,$udomain,$uname)=@_;
5883: if (!$udomain) { $udomain=$env{'user.domain'}; }
5884: if (!$uname) { $uname=$env{'user.name'}; }
5885: my $uhome=&homeserver($uname,$udomain);
5886: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5887: my @keyarray=();
5888: foreach my $key (split(/\&/,$rep)) {
5889: next if ($key =~ /^error: 2 /);
5890: push(@keyarray,&unescape($key));
5891: }
5892: return @keyarray;
5893: }
5894:
5895: # --------------------------------------------------------------- currentdump
5896: sub currentdump {
5897: my ($courseid,$sdom,$sname)=@_;
5898: $courseid = $env{'request.course.id'} if (! defined($courseid));
5899: $sdom = $env{'user.domain'} if (! defined($sdom));
5900: $sname = $env{'user.name'} if (! defined($sname));
5901: my $uhome = &homeserver($sname,$sdom);
5902: my $rep;
5903:
5904: if (grep { $_ eq $uhome } current_machine_ids()) {
5905: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5906: $courseid)));
5907: } else {
5908: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5909: }
5910:
5911: return if ($rep =~ /^(error:|no_such_host)/);
5912: #
5913: my %returnhash=();
5914: #
5915: if ($rep eq "unknown_cmd") {
5916: # an old lond will not know currentdump
5917: # Do a dump and make it look like a currentdump
5918: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5919: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5920: my %hash = @tmp;
5921: @tmp=();
5922: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5923: } else {
5924: my @pairs=split(/\&/,$rep);
5925: foreach my $pair (@pairs) {
5926: my ($key,$value)=split(/=/,$pair,2);
5927: my ($symb,$param) = split(/:/,$key);
5928: $returnhash{&unescape($symb)}->{&unescape($param)} =
5929: &thaw_unescape($value);
5930: }
5931: }
5932: return %returnhash;
5933: }
5934:
5935: sub convert_dump_to_currentdump{
5936: my %hash = %{shift()};
5937: my %returnhash;
5938: # Code ripped from lond, essentially. The only difference
5939: # here is the unescaping done by lonnet::dump(). Conceivably
5940: # we might run in to problems with parameter names =~ /^v\./
5941: while (my ($key,$value) = each(%hash)) {
5942: my ($v,$symb,$param) = split(/:/,$key);
5943: $symb = &unescape($symb);
5944: $param = &unescape($param);
5945: next if ($v eq 'version' || $symb eq 'keys');
5946: next if (exists($returnhash{$symb}) &&
5947: exists($returnhash{$symb}->{$param}) &&
5948: $returnhash{$symb}->{'v.'.$param} > $v);
5949: $returnhash{$symb}->{$param}=$value;
5950: $returnhash{$symb}->{'v.'.$param}=$v;
5951: }
5952: #
5953: # Remove all of the keys in the hashes which keep track of
5954: # the version of the parameter.
5955: while (my ($symb,$param_hash) = each(%returnhash)) {
5956: # use a foreach because we are going to delete from the hash.
5957: foreach my $key (keys(%$param_hash)) {
5958: delete($param_hash->{$key}) if ($key =~ /^v\./);
5959: }
5960: }
5961: return \%returnhash;
5962: }
5963:
5964: # ------------------------------------------------------ critical inc interface
5965:
5966: sub cinc {
5967: return &inc(@_,'critical');
5968: }
5969:
5970: # --------------------------------------------------------------- inc interface
5971:
5972: sub inc {
5973: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5974: if (!$udomain) { $udomain=$env{'user.domain'}; }
5975: if (!$uname) { $uname=$env{'user.name'}; }
5976: my $uhome=&homeserver($uname,$udomain);
5977: my $items='';
5978: if (! ref($store)) {
5979: # got a single value, so use that instead
5980: $items = &escape($store).'=&';
5981: } elsif (ref($store) eq 'SCALAR') {
5982: $items = &escape($$store).'=&';
5983: } elsif (ref($store) eq 'ARRAY') {
5984: $items = join('=&',map {&escape($_);} @{$store});
5985: } elsif (ref($store) eq 'HASH') {
5986: while (my($key,$value) = each(%{$store})) {
5987: $items.= &escape($key).'='.&escape($value).'&';
5988: }
5989: }
5990: $items=~s/\&$//;
5991: if ($critical) {
5992: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5993: } else {
5994: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5995: }
5996: }
5997:
5998: # --------------------------------------------------------------- put interface
5999:
6000: sub put {
6001: my ($namespace,$storehash,$udomain,$uname)=@_;
6002: if (!$udomain) { $udomain=$env{'user.domain'}; }
6003: if (!$uname) { $uname=$env{'user.name'}; }
6004: my $uhome=&homeserver($uname,$udomain);
6005: my $items='';
6006: foreach my $item (keys(%$storehash)) {
6007: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6008: }
6009: $items=~s/\&$//;
6010: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6011: }
6012:
6013: # ------------------------------------------------------------ newput interface
6014:
6015: sub newput {
6016: my ($namespace,$storehash,$udomain,$uname)=@_;
6017: if (!$udomain) { $udomain=$env{'user.domain'}; }
6018: if (!$uname) { $uname=$env{'user.name'}; }
6019: my $uhome=&homeserver($uname,$udomain);
6020: my $items='';
6021: foreach my $key (keys(%$storehash)) {
6022: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6023: }
6024: $items=~s/\&$//;
6025: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6026: }
6027:
6028: # --------------------------------------------------------- putstore interface
6029:
6030: sub putstore {
6031: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6032: if (!$udomain) { $udomain=$env{'user.domain'}; }
6033: if (!$uname) { $uname=$env{'user.name'}; }
6034: my $uhome=&homeserver($uname,$udomain);
6035: my $items='';
6036: foreach my $key (keys(%$storehash)) {
6037: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6038: }
6039: $items=~s/\&$//;
6040: my $esc_symb=&escape($symb);
6041: my $esc_v=&escape($version);
6042: my $reply =
6043: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6044: $uhome);
6045: if (($tolog) && ($reply eq 'ok')) {
6046: my $namevalue='';
6047: foreach my $key (keys(%{$storehash})) {
6048: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6049: }
6050: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6051: '&host='.&escape($perlvar{'lonHostID'}).
6052: '&version='.$esc_v.
6053: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6054: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6055: }
6056: if ($reply eq 'unknown_cmd') {
6057: # gfall back to way things use to be done
6058: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6059: $uname);
6060: }
6061: return $reply;
6062: }
6063:
6064: sub old_putstore {
6065: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6066: if (!$udomain) { $udomain=$env{'user.domain'}; }
6067: if (!$uname) { $uname=$env{'user.name'}; }
6068: my $uhome=&homeserver($uname,$udomain);
6069: my %newstorehash;
6070: foreach my $item (keys(%$storehash)) {
6071: my $key = $version.':'.&escape($symb).':'.$item;
6072: $newstorehash{$key} = $storehash->{$item};
6073: }
6074: my $items='';
6075: my %allitems = ();
6076: foreach my $item (keys(%newstorehash)) {
6077: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6078: my $key = $1.':keys:'.$2;
6079: $allitems{$key} .= $3.':';
6080: }
6081: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6082: }
6083: foreach my $item (keys(%allitems)) {
6084: $allitems{$item} =~ s/\:$//;
6085: $items.= $item.'='.$allitems{$item}.'&';
6086: }
6087: $items=~s/\&$//;
6088: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6089: }
6090:
6091: # ------------------------------------------------------ critical put interface
6092:
6093: sub cput {
6094: my ($namespace,$storehash,$udomain,$uname)=@_;
6095: if (!$udomain) { $udomain=$env{'user.domain'}; }
6096: if (!$uname) { $uname=$env{'user.name'}; }
6097: my $uhome=&homeserver($uname,$udomain);
6098: my $items='';
6099: foreach my $item (keys(%$storehash)) {
6100: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6101: }
6102: $items=~s/\&$//;
6103: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6104: }
6105:
6106: # -------------------------------------------------------------- eget interface
6107:
6108: sub eget {
6109: my ($namespace,$storearr,$udomain,$uname)=@_;
6110: my $items='';
6111: foreach my $item (@$storearr) {
6112: $items.=&escape($item).'&';
6113: }
6114: $items=~s/\&$//;
6115: if (!$udomain) { $udomain=$env{'user.domain'}; }
6116: if (!$uname) { $uname=$env{'user.name'}; }
6117: my $uhome=&homeserver($uname,$udomain);
6118: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6119: my @pairs=split(/\&/,$rep);
6120: my %returnhash=();
6121: my $i=0;
6122: foreach my $item (@$storearr) {
6123: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6124: $i++;
6125: }
6126: return %returnhash;
6127: }
6128:
6129: # ------------------------------------------------------------ tmpput interface
6130: sub tmpput {
6131: my ($storehash,$server,$context)=@_;
6132: my $items='';
6133: foreach my $item (keys(%$storehash)) {
6134: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6135: }
6136: $items=~s/\&$//;
6137: if (defined($context)) {
6138: $items .= ':'.&escape($context);
6139: }
6140: return &reply("tmpput:$items",$server);
6141: }
6142:
6143: # ------------------------------------------------------------ tmpget interface
6144: sub tmpget {
6145: my ($token,$server)=@_;
6146: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6147: my $rep=&reply("tmpget:$token",$server);
6148: my %returnhash;
6149: foreach my $item (split(/\&/,$rep)) {
6150: my ($key,$value)=split(/=/,$item);
6151: next if ($key =~ /^error: 2 /);
6152: $returnhash{&unescape($key)}=&thaw_unescape($value);
6153: }
6154: return %returnhash;
6155: }
6156:
6157: # ------------------------------------------------------------ tmpdel interface
6158: sub tmpdel {
6159: my ($token,$server)=@_;
6160: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6161: return &reply("tmpdel:$token",$server);
6162: }
6163:
6164: # ------------------------------------------------------------ get_timebased_id
6165:
6166: sub get_timebased_id {
6167: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6168: $maxtries) = @_;
6169: my ($newid,$error,$dellock);
6170: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6171: return ('','ok','invalid call to get suffix');
6172: }
6173:
6174: # set defaults for any optional args for which values were not supplied
6175: if ($who eq '') {
6176: $who = $env{'user.name'}.':'.$env{'user.domain'};
6177: }
6178: if (!$locktries) {
6179: $locktries = 3;
6180: }
6181: if (!$maxtries) {
6182: $maxtries = 10;
6183: }
6184:
6185: if (($cdom eq '') || ($cnum eq '')) {
6186: if ($env{'request.course.id'}) {
6187: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6188: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6189: }
6190: if (($cdom eq '') || ($cnum eq '')) {
6191: return ('','ok','call to get suffix not in course context');
6192: }
6193: }
6194:
6195: # construct locking item
6196: my $lockhash = {
6197: $prefix."\0".'locked_'.$keyid => $who,
6198: };
6199: my $tries = 0;
6200:
6201: # attempt to get lock on nohist_$namespace file
6202: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6203: while (($gotlock ne 'ok') && $tries <$locktries) {
6204: $tries ++;
6205: sleep 1;
6206: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6207: }
6208:
6209: # attempt to get unique identifier, based on current timestamp
6210: if ($gotlock eq 'ok') {
6211: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6212: my $id = time;
6213: $newid = $id;
6214: if ($idtype eq 'addcode') {
6215: $newid .= &sixnum_code();
6216: }
6217: my $idtries = 0;
6218: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6219: if ($idtype eq 'concat') {
6220: $newid = $id.$idtries;
6221: } elsif ($idtype eq 'addcode') {
6222: $newid = $newid.&sixnum_code();
6223: } else {
6224: $newid ++;
6225: }
6226: $idtries ++;
6227: }
6228: if (!exists($inuse{$prefix."\0".$newid})) {
6229: my %new_item = (
6230: $prefix."\0".$newid => $who,
6231: );
6232: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6233: $cdom,$cnum);
6234: if ($putresult ne 'ok') {
6235: undef($newid);
6236: $error = 'error saving new item: '.$putresult;
6237: }
6238: } else {
6239: undef($newid);
6240: $error = ('error: no unique suffix available for the new item ');
6241: }
6242: # remove lock
6243: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6244: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6245: } else {
6246: $error = "error: could not obtain lockfile\n";
6247: $dellock = 'ok';
6248: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6249: $dellock = 'nolock';
6250: }
6251: }
6252: return ($newid,$dellock,$error);
6253: }
6254:
6255: sub sixnum_code {
6256: my $code;
6257: for (0..6) {
6258: $code .= int( rand(9) );
6259: }
6260: return $code;
6261: }
6262:
6263: # -------------------------------------------------- portfolio access checking
6264:
6265: sub portfolio_access {
6266: my ($requrl,$clientip) = @_;
6267: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6268: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6269: if ($result) {
6270: my %setters;
6271: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6272: my ($startblock,$endblock) =
6273: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6274: if ($startblock && $endblock) {
6275: return 'B';
6276: }
6277: } else {
6278: my ($startblock,$endblock) =
6279: &Apache::loncommon::blockcheck(\%setters,'port');
6280: if ($startblock && $endblock) {
6281: return 'B';
6282: }
6283: }
6284: }
6285: if ($result eq 'ok') {
6286: return 'F';
6287: } elsif ($result =~ /^[^:]+:guest_/) {
6288: return 'A';
6289: }
6290: return '';
6291: }
6292:
6293: sub get_portfolio_access {
6294: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6295:
6296: if (!ref($access_hash)) {
6297: my $current_perms = &get_portfile_permissions($udom,$unum);
6298: my %access_controls = &get_access_controls($current_perms,$group,
6299: $file_name);
6300: $access_hash = $access_controls{$file_name};
6301: }
6302:
6303: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6304: my $now = time;
6305: if (ref($access_hash) eq 'HASH') {
6306: foreach my $key (keys(%{$access_hash})) {
6307: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6308: if ($start > $now) {
6309: next;
6310: }
6311: if ($end && $end<$now) {
6312: next;
6313: }
6314: if ($scope eq 'public') {
6315: $public = $key;
6316: last;
6317: } elsif ($scope eq 'guest') {
6318: $guest = $key;
6319: } elsif ($scope eq 'domains') {
6320: push(@domains,$key);
6321: } elsif ($scope eq 'users') {
6322: push(@users,$key);
6323: } elsif ($scope eq 'course') {
6324: push(@courses,$key);
6325: } elsif ($scope eq 'group') {
6326: push(@groups,$key);
6327: } elsif ($scope eq 'ip') {
6328: push(@ips,$key);
6329: }
6330: }
6331: if ($public) {
6332: return 'ok';
6333: } elsif (@ips > 0) {
6334: my $allowed;
6335: foreach my $ipkey (@ips) {
6336: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6337: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6338: $allowed = 1;
6339: last;
6340: }
6341: }
6342: }
6343: if ($allowed) {
6344: return 'ok';
6345: }
6346: }
6347: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6348: if ($guest) {
6349: return $guest;
6350: }
6351: } else {
6352: if (@domains > 0) {
6353: foreach my $domkey (@domains) {
6354: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6355: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6356: return 'ok';
6357: }
6358: }
6359: }
6360: }
6361: if (@users > 0) {
6362: foreach my $userkey (@users) {
6363: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6364: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6365: if (ref($item) eq 'HASH') {
6366: if (($item->{'uname'} eq $env{'user.name'}) &&
6367: ($item->{'udom'} eq $env{'user.domain'})) {
6368: return 'ok';
6369: }
6370: }
6371: }
6372: }
6373: }
6374: }
6375: my %roleshash;
6376: my @courses_and_groups = @courses;
6377: push(@courses_and_groups,@groups);
6378: if (@courses_and_groups > 0) {
6379: my (%allgroups,%allroles);
6380: my ($start,$end,$role,$sec,$group);
6381: foreach my $envkey (%env) {
6382: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6383: my $cid = $2.'_'.$3;
6384: if ($1 eq 'gr') {
6385: $group = $4;
6386: $allgroups{$cid}{$group} = $env{$envkey};
6387: } else {
6388: if ($4 eq '') {
6389: $sec = 'none';
6390: } else {
6391: $sec = $4;
6392: }
6393: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6394: }
6395: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6396: my $cid = $2.'_'.$3;
6397: if ($4 eq '') {
6398: $sec = 'none';
6399: } else {
6400: $sec = $4;
6401: }
6402: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6403: }
6404: }
6405: if (keys(%allroles) == 0) {
6406: return;
6407: }
6408: foreach my $key (@courses_and_groups) {
6409: my %content = %{$$access_hash{$key}};
6410: my $cnum = $content{'number'};
6411: my $cdom = $content{'domain'};
6412: my $cid = $cdom.'_'.$cnum;
6413: if (!exists($allroles{$cid})) {
6414: next;
6415: }
6416: foreach my $role_id (keys(%{$content{'roles'}})) {
6417: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6418: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6419: my @status = @{$content{'roles'}{$role_id}{'access'}};
6420: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6421: foreach my $role (keys(%{$allroles{$cid}})) {
6422: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6423: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6424: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6425: if (grep/^all$/,@sections) {
6426: return 'ok';
6427: } else {
6428: if (grep/^$sec$/,@sections) {
6429: return 'ok';
6430: }
6431: }
6432: }
6433: }
6434: if (keys(%{$allgroups{$cid}}) == 0) {
6435: if (grep/^none$/,@groups) {
6436: return 'ok';
6437: }
6438: } else {
6439: if (grep/^all$/,@groups) {
6440: return 'ok';
6441: }
6442: foreach my $group (keys(%{$allgroups{$cid}})) {
6443: if (grep/^$group$/,@groups) {
6444: return 'ok';
6445: }
6446: }
6447: }
6448: }
6449: }
6450: }
6451: }
6452: }
6453: if ($guest) {
6454: return $guest;
6455: }
6456: }
6457: }
6458: return;
6459: }
6460:
6461: sub course_group_datechecker {
6462: my ($dates,$now,$status) = @_;
6463: my ($start,$end) = split(/\./,$dates);
6464: if (!$start && !$end) {
6465: return 'ok';
6466: }
6467: if (grep/^active$/,@{$status}) {
6468: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6469: return 'ok';
6470: }
6471: }
6472: if (grep/^previous$/,@{$status}) {
6473: if ($end > $now ) {
6474: return 'ok';
6475: }
6476: }
6477: if (grep/^future$/,@{$status}) {
6478: if ($start > $now) {
6479: return 'ok';
6480: }
6481: }
6482: return;
6483: }
6484:
6485: sub parse_portfolio_url {
6486: my ($url) = @_;
6487:
6488: my ($type,$udom,$unum,$group,$file_name);
6489:
6490: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6491: $type = 1;
6492: $udom = $1;
6493: $unum = $2;
6494: $file_name = $3;
6495: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6496: $type = 2;
6497: $udom = $1;
6498: $unum = $2;
6499: $group = $3;
6500: $file_name = $3.'/'.$4;
6501: }
6502: if (wantarray) {
6503: return ($type,$udom,$unum,$file_name,$group);
6504: }
6505: return $type;
6506: }
6507:
6508: sub is_portfolio_url {
6509: my ($url) = @_;
6510: return scalar(&parse_portfolio_url($url));
6511: }
6512:
6513: sub is_portfolio_file {
6514: my ($file) = @_;
6515: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6516: return 1;
6517: }
6518: return;
6519: }
6520:
6521: sub usertools_access {
6522: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6523: my ($access,%tools);
6524: if ($context eq '') {
6525: $context = 'tools';
6526: }
6527: if ($context eq 'requestcourses') {
6528: %tools = (
6529: official => 1,
6530: unofficial => 1,
6531: community => 1,
6532: textbook => 1,
6533: );
6534: } elsif ($context eq 'requestauthor') {
6535: %tools = (
6536: requestauthor => 1,
6537: );
6538: } else {
6539: %tools = (
6540: aboutme => 1,
6541: blog => 1,
6542: webdav => 1,
6543: portfolio => 1,
6544: );
6545: }
6546: return if (!defined($tools{$tool}));
6547:
6548: if (($udom eq '') || ($uname eq '')) {
6549: $udom = $env{'user.domain'};
6550: $uname = $env{'user.name'};
6551: }
6552:
6553: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6554: if ($action ne 'reload') {
6555: if ($context eq 'requestcourses') {
6556: return $env{'environment.canrequest.'.$tool};
6557: } elsif ($context eq 'requestauthor') {
6558: return $env{'environment.canrequest.author'};
6559: } else {
6560: return $env{'environment.availabletools.'.$tool};
6561: }
6562: }
6563: }
6564:
6565: my ($toolstatus,$inststatus,$envkey);
6566: if ($context eq 'requestauthor') {
6567: $envkey = $context;
6568: } else {
6569: $envkey = $context.'.'.$tool;
6570: }
6571:
6572: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6573: ($action ne 'reload')) {
6574: $toolstatus = $env{'environment.'.$envkey};
6575: $inststatus = $env{'environment.inststatus'};
6576: } else {
6577: if (ref($userenvref) eq 'HASH') {
6578: $toolstatus = $userenvref->{$envkey};
6579: $inststatus = $userenvref->{'inststatus'};
6580: } else {
6581: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6582: $toolstatus = $userenv{$envkey};
6583: $inststatus = $userenv{'inststatus'};
6584: }
6585: }
6586:
6587: if ($toolstatus ne '') {
6588: if ($toolstatus) {
6589: $access = 1;
6590: } else {
6591: $access = 0;
6592: }
6593: return $access;
6594: }
6595:
6596: my ($is_adv,%domdef);
6597: if (ref($is_advref) eq 'HASH') {
6598: $is_adv = $is_advref->{'is_adv'};
6599: } else {
6600: $is_adv = &is_advanced_user($udom,$uname);
6601: }
6602: if (ref($domdefref) eq 'HASH') {
6603: %domdef = %{$domdefref};
6604: } else {
6605: %domdef = &get_domain_defaults($udom);
6606: }
6607: if (ref($domdef{$tool}) eq 'HASH') {
6608: if ($is_adv) {
6609: if ($domdef{$tool}{'_LC_adv'} ne '') {
6610: if ($domdef{$tool}{'_LC_adv'}) {
6611: $access = 1;
6612: } else {
6613: $access = 0;
6614: }
6615: return $access;
6616: }
6617: }
6618: if ($inststatus ne '') {
6619: my ($hasaccess,$hasnoaccess);
6620: foreach my $affiliation (split(/:/,$inststatus)) {
6621: if ($domdef{$tool}{$affiliation} ne '') {
6622: if ($domdef{$tool}{$affiliation}) {
6623: $hasaccess = 1;
6624: } else {
6625: $hasnoaccess = 1;
6626: }
6627: }
6628: }
6629: if ($hasaccess || $hasnoaccess) {
6630: if ($hasaccess) {
6631: $access = 1;
6632: } elsif ($hasnoaccess) {
6633: $access = 0;
6634: }
6635: return $access;
6636: }
6637: } else {
6638: if ($domdef{$tool}{'default'} ne '') {
6639: if ($domdef{$tool}{'default'}) {
6640: $access = 1;
6641: } elsif ($domdef{$tool}{'default'} == 0) {
6642: $access = 0;
6643: }
6644: return $access;
6645: }
6646: }
6647: } else {
6648: if (($context eq 'tools') && ($tool ne 'webdav')) {
6649: $access = 1;
6650: } else {
6651: $access = 0;
6652: }
6653: return $access;
6654: }
6655: }
6656:
6657: sub is_course_owner {
6658: my ($cdom,$cnum,$udom,$uname) = @_;
6659: if (($udom eq '') || ($uname eq '')) {
6660: $udom = $env{'user.domain'};
6661: $uname = $env{'user.name'};
6662: }
6663: unless (($udom eq '') || ($uname eq '')) {
6664: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6665: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6666: return 1;
6667: } else {
6668: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6669: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6670: return 1;
6671: }
6672: }
6673: }
6674: }
6675: return;
6676: }
6677:
6678: sub is_advanced_user {
6679: my ($udom,$uname) = @_;
6680: if ($udom ne '' && $uname ne '') {
6681: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6682: if (wantarray) {
6683: return ($env{'user.adv'},$env{'user.author'});
6684: } else {
6685: return $env{'user.adv'};
6686: }
6687: }
6688: }
6689: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6690: my %allroles;
6691: my ($is_adv,$is_author);
6692: foreach my $role (keys(%roleshash)) {
6693: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6694: my $area = '/'.$tdomain.'/'.$trest;
6695: if ($sec ne '') {
6696: $area .= '/'.$sec;
6697: }
6698: if (($area ne '') && ($trole ne '')) {
6699: my $spec=$trole.'.'.$area;
6700: if ($trole =~ /^cr\//) {
6701: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6702: } elsif ($trole ne 'gr') {
6703: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6704: }
6705: if ($trole eq 'au') {
6706: $is_author = 1;
6707: }
6708: }
6709: }
6710: foreach my $role (keys(%allroles)) {
6711: last if ($is_adv);
6712: foreach my $item (split(/:/,$allroles{$role})) {
6713: if ($item ne '') {
6714: my ($privilege,$restrictions)=split(/&/,$item);
6715: if ($privilege eq 'adv') {
6716: $is_adv = 1;
6717: last;
6718: }
6719: }
6720: }
6721: }
6722: if (wantarray) {
6723: return ($is_adv,$is_author);
6724: }
6725: return $is_adv;
6726: }
6727:
6728: sub check_can_request {
6729: my ($dom,$can_request,$request_domains) = @_;
6730: my $canreq = 0;
6731: my ($types,$typename) = &Apache::loncommon::course_types();
6732: my @options = ('approval','validate','autolimit');
6733: my $optregex = join('|',@options);
6734: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6735: foreach my $type (@{$types}) {
6736: if (&usertools_access($env{'user.name'},
6737: $env{'user.domain'},
6738: $type,undef,'requestcourses')) {
6739: $canreq ++;
6740: if (ref($request_domains) eq 'HASH') {
6741: push(@{$request_domains->{$type}},$env{'user.domain'});
6742: }
6743: if ($dom eq $env{'user.domain'}) {
6744: $can_request->{$type} = 1;
6745: }
6746: }
6747: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6748: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6749: if (@curr > 0) {
6750: foreach my $item (@curr) {
6751: if (ref($request_domains) eq 'HASH') {
6752: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6753: if ($otherdom ne '') {
6754: if (ref($request_domains->{$type}) eq 'ARRAY') {
6755: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6756: push(@{$request_domains->{$type}},$otherdom);
6757: }
6758: } else {
6759: push(@{$request_domains->{$type}},$otherdom);
6760: }
6761: }
6762: }
6763: }
6764: unless($dom eq $env{'user.domain'}) {
6765: $canreq ++;
6766: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6767: $can_request->{$type} = 1;
6768: }
6769: }
6770: }
6771: }
6772: }
6773: }
6774: return $canreq;
6775: }
6776:
6777: # ---------------------------------------------- Custom access rule evaluation
6778:
6779: sub customaccess {
6780: my ($priv,$uri)=@_;
6781: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6782: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6783: $udom = &LONCAPA::clean_domain($udom);
6784: $ucrs = &LONCAPA::clean_username($ucrs);
6785: my $access=0;
6786: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6787: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6788: if ($type eq 'user') {
6789: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6790: my ($tdom,$tuname)=split(m{/},$scope);
6791: if ($tdom) {
6792: if ($tdom ne $env{'user.domain'}) { next; }
6793: }
6794: if ($tuname) {
6795: if ($tuname ne $env{'user.name'}) { next; }
6796: }
6797: $access=($effect eq 'allow');
6798: last;
6799: }
6800: } else {
6801: if ($role) {
6802: if ($role ne $urole) { next; }
6803: }
6804: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6805: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6806: if ($tdom) {
6807: if ($tdom ne $udom) { next; }
6808: }
6809: if ($tcrs) {
6810: if ($tcrs ne $ucrs) { next; }
6811: }
6812: if ($tsec) {
6813: if ($tsec ne $usec) { next; }
6814: }
6815: $access=($effect eq 'allow');
6816: last;
6817: }
6818: if ($realm eq '' && $role eq '') {
6819: $access=($effect eq 'allow');
6820: }
6821: }
6822: }
6823: return $access;
6824: }
6825:
6826: # ------------------------------------------------- Check for a user privilege
6827:
6828: sub allowed {
6829: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
6830: my $ver_orguri=$uri;
6831: $uri=&deversion($uri);
6832: my $orguri=$uri;
6833: $uri=&declutter($uri);
6834:
6835: if ($priv eq 'evb') {
6836: # Evade communication block restrictions for specified role in a course
6837: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6838: return $1;
6839: } else {
6840: return;
6841: }
6842: }
6843:
6844: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6845: # Free bre access to adm and meta resources
6846: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6847: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6848: && ($priv eq 'bre')) {
6849: return 'F';
6850: }
6851:
6852: # Free bre access to user's own portfolio contents
6853: my ($space,$domain,$name,@dir)=split('/',$uri);
6854: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6855: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6856: my %setters;
6857: my ($startblock,$endblock) =
6858: &Apache::loncommon::blockcheck(\%setters,'port');
6859: if ($startblock && $endblock) {
6860: return 'B';
6861: } else {
6862: return 'F';
6863: }
6864: }
6865:
6866: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6867: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6868: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6869: if (exists($env{'request.course.id'})) {
6870: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6871: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6872: if (($domain eq $cdom) && ($name eq $cnum)) {
6873: my $courseprivid=$env{'request.course.id'};
6874: $courseprivid=~s/\_/\//;
6875: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6876: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6877: return $1;
6878: } else {
6879: if ($env{'request.course.sec'}) {
6880: $courseprivid.='/'.$env{'request.course.sec'};
6881: }
6882: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6883: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6884: return $2;
6885: }
6886: }
6887: }
6888: }
6889: }
6890:
6891: # Free bre to public access
6892:
6893: if ($priv eq 'bre') {
6894: my $copyright=&metadata($uri,'copyright');
6895: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6896: return 'F';
6897: }
6898: if ($copyright eq 'priv') {
6899: $uri=~/([^\/]+)\/([^\/]+)\//;
6900: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6901: return '';
6902: }
6903: }
6904: if ($copyright eq 'domain') {
6905: $uri=~/([^\/]+)\/([^\/]+)\//;
6906: unless (($env{'user.domain'} eq $1) ||
6907: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6908: return '';
6909: }
6910: }
6911: if ($env{'request.role'}=~ /li\.\//) {
6912: # Library role, so allow browsing of resources in this domain.
6913: return 'F';
6914: }
6915: if ($copyright eq 'custom') {
6916: unless (&customaccess($priv,$uri)) { return ''; }
6917: }
6918: }
6919: # Domain coordinator is trying to create a course
6920: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6921: # uri is the requested domain in this case.
6922: # comparison to 'request.role.domain' shows if the user has selected
6923: # a role of dc for the domain in question.
6924: return 'F' if ($uri eq $env{'request.role.domain'});
6925: }
6926:
6927: my $thisallowed='';
6928: my $statecond=0;
6929: my $courseprivid='';
6930:
6931: my $ownaccess;
6932: # Community Coordinator or Assistant Co-author browsing resource space.
6933: if (($priv eq 'bro') && ($env{'user.author'})) {
6934: if ($uri eq '') {
6935: $ownaccess = 1;
6936: } else {
6937: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6938: my $udom = $env{'user.domain'};
6939: my $uname = $env{'user.name'};
6940: if ($uri =~ m{^\Q$udom\E/?$}) {
6941: $ownaccess = 1;
6942: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6943: unless ($uri =~ m{\.\./}) {
6944: $ownaccess = 1;
6945: }
6946: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6947: my $now = time;
6948: if ($uri =~ m{^([^/]+)/?$}) {
6949: my $adom = $1;
6950: foreach my $key (keys(%env)) {
6951: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6952: my ($start,$end) = split('.',$env{$key});
6953: if (($now >= $start) && (!$end || $end < $now)) {
6954: $ownaccess = 1;
6955: last;
6956: }
6957: }
6958: }
6959: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6960: my $adom = $1;
6961: my $aname = $2;
6962: foreach my $role ('ca','aa') {
6963: if ($env{"user.role.$role./$adom/$aname"}) {
6964: my ($start,$end) =
6965: split('.',$env{"user.role.$role./$adom/$aname"});
6966: if (($now >= $start) && (!$end || $end < $now)) {
6967: $ownaccess = 1;
6968: last;
6969: }
6970: }
6971: }
6972: }
6973: }
6974: }
6975: }
6976: }
6977:
6978: # Course
6979:
6980: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6981: unless (($priv eq 'bro') && (!$ownaccess)) {
6982: $thisallowed.=$1;
6983: }
6984: }
6985:
6986: # Domain
6987:
6988: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6989: =~/\Q$priv\E\&([^\:]*)/) {
6990: unless (($priv eq 'bro') && (!$ownaccess)) {
6991: $thisallowed.=$1;
6992: }
6993: }
6994:
6995: # User who is not author or co-author might still be able to edit
6996: # resource of an author in the domain (e.g., if Domain Coordinator).
6997: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6998: (&allowed('mdc',$env{'request.course.id'}))) {
6999: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7000: $thisallowed.=$1;
7001: }
7002: }
7003:
7004: # Course: uri itself is a course
7005: my $courseuri=$uri;
7006: $courseuri=~s/\_(\d)/\/$1/;
7007: $courseuri=~s/^([^\/])/\/$1/;
7008:
7009: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7010: =~/\Q$priv\E\&([^\:]*)/) {
7011: unless (($priv eq 'bro') && (!$ownaccess)) {
7012: $thisallowed.=$1;
7013: }
7014: }
7015:
7016: # URI is an uploaded document for this course, default permissions don't matter
7017: # not allowing 'edit' access (editupload) to uploaded course docs
7018: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7019: $thisallowed='';
7020: my ($match)=&is_on_map($uri);
7021: if ($match) {
7022: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7023: =~/\Q$priv\E\&([^\:]*)/) {
7024: my $value = $1;
7025: if ($noblockcheck) {
7026: $thisallowed.=$value;
7027: } else {
7028: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7029: if (@blockers > 0) {
7030: $thisallowed = 'B';
7031: } else {
7032: $thisallowed.=$value;
7033: }
7034: }
7035: }
7036: } else {
7037: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7038: if ($refuri) {
7039: if ($refuri =~ m|^/adm/|) {
7040: $thisallowed='F';
7041: } else {
7042: $refuri=&declutter($refuri);
7043: my ($match) = &is_on_map($refuri);
7044: if ($match) {
7045: if ($noblockcheck) {
7046: $thisallowed='F';
7047: } else {
7048: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7049: if (@blockers > 0) {
7050: $thisallowed = 'B';
7051: } else {
7052: $thisallowed='F';
7053: }
7054: }
7055: }
7056: }
7057: }
7058: }
7059: }
7060:
7061: if ($priv eq 'bre'
7062: && $thisallowed ne 'F'
7063: && $thisallowed ne '2'
7064: && &is_portfolio_url($uri)) {
7065: $thisallowed = &portfolio_access($uri,$clientip);
7066: }
7067:
7068: # Full access at system, domain or course-wide level? Exit.
7069: if ($thisallowed=~/F/) {
7070: return 'F';
7071: }
7072:
7073: # If this is generating or modifying users, exit with special codes
7074:
7075: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7076: if (($priv eq 'cca') || ($priv eq 'caa')) {
7077: my ($audom,$auname)=split('/',$uri);
7078: # no author name given, so this just checks on the general right to make a co-author in this domain
7079: unless ($auname) { return $thisallowed; }
7080: # an author name is given, so we are about to actually make a co-author for a certain account
7081: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7082: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7083: ($audom ne $env{'request.role.domain'}))) { return ''; }
7084: }
7085: return $thisallowed;
7086: }
7087: #
7088: # Gathered so far: system, domain and course wide privileges
7089: #
7090: # Course: See if uri or referer is an individual resource that is part of
7091: # the course
7092:
7093: if ($env{'request.course.id'}) {
7094:
7095: $courseprivid=$env{'request.course.id'};
7096: if ($env{'request.course.sec'}) {
7097: $courseprivid.='/'.$env{'request.course.sec'};
7098: }
7099: $courseprivid=~s/\_/\//;
7100: my $checkreferer=1;
7101: my ($match,$cond)=&is_on_map($uri);
7102: if ($match) {
7103: $statecond=$cond;
7104: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7105: =~/\Q$priv\E\&([^\:]*)/) {
7106: my $value = $1;
7107: if ($priv eq 'bre') {
7108: if ($noblockcheck) {
7109: $thisallowed.=$value;
7110: } else {
7111: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7112: if (@blockers > 0) {
7113: $thisallowed = 'B';
7114: } else {
7115: $thisallowed.=$value;
7116: }
7117: }
7118: } else {
7119: $thisallowed.=$value;
7120: }
7121: $checkreferer=0;
7122: }
7123: }
7124:
7125: if ($checkreferer) {
7126: my $refuri=$env{'httpref.'.$orguri};
7127: unless ($refuri) {
7128: foreach my $key (keys(%env)) {
7129: if ($key=~/^httpref\..*\*/) {
7130: my $pattern=$key;
7131: $pattern=~s/^httpref\.\/res\///;
7132: $pattern=~s/\*/\[\^\/\]\+/g;
7133: $pattern=~s/\//\\\//g;
7134: if ($orguri=~/$pattern/) {
7135: $refuri=$env{$key};
7136: }
7137: }
7138: }
7139: }
7140:
7141: if ($refuri) {
7142: $refuri=&declutter($refuri);
7143: my ($match,$cond)=&is_on_map($refuri);
7144: if ($match) {
7145: my $refstatecond=$cond;
7146: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7147: =~/\Q$priv\E\&([^\:]*)/) {
7148: my $value = $1;
7149: if ($priv eq 'bre') {
7150: if ($noblockcheck) {
7151: $thisallowed.=$value;
7152: } else {
7153: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7154: if (@blockers > 0) {
7155: $thisallowed = 'B';
7156: } else {
7157: $thisallowed.=$value;
7158: }
7159: }
7160: } else {
7161: $thisallowed.=$value;
7162: }
7163: $uri=$refuri;
7164: $statecond=$refstatecond;
7165: }
7166: }
7167: }
7168: }
7169: }
7170:
7171: #
7172: # Gathered now: all privileges that could apply, and condition number
7173: #
7174: #
7175: # Full or no access?
7176: #
7177:
7178: if ($thisallowed=~/F/) {
7179: return 'F';
7180: }
7181:
7182: unless ($thisallowed) {
7183: return '';
7184: }
7185:
7186: # Restrictions exist, deal with them
7187: #
7188: # C:according to course preferences
7189: # R:according to resource settings
7190: # L:unless locked
7191: # X:according to user session state
7192: #
7193:
7194: # Possibly locked functionality, check all courses
7195: # Locks might take effect only after 10 minutes cache expiration for other
7196: # courses, and 2 minutes for current course
7197:
7198: my $envkey;
7199: if ($thisallowed=~/L/) {
7200: foreach $envkey (keys(%env)) {
7201: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7202: my $courseid=$2;
7203: my $roleid=$1.'.'.$2;
7204: $courseid=~s/^\///;
7205: my $expiretime=600;
7206: if ($env{'request.role'} eq $roleid) {
7207: $expiretime=120;
7208: }
7209: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7210: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7211: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7212: &coursedescription($courseid,{'freshen_cache' => 1});
7213: }
7214: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7215: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7216: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7217: &log($env{'user.domain'},$env{'user.name'},
7218: $env{'user.home'},
7219: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7220: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7221: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7222: return '';
7223: }
7224: }
7225: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7226: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7227: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7228: &log($env{'user.domain'},$env{'user.name'},
7229: $env{'user.home'},
7230: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7231: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7232: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7233: return '';
7234: }
7235: }
7236: }
7237: }
7238: }
7239:
7240: #
7241: # Rest of the restrictions depend on selected course
7242: #
7243:
7244: unless ($env{'request.course.id'}) {
7245: if ($thisallowed eq 'A') {
7246: return 'A';
7247: } elsif ($thisallowed eq 'B') {
7248: return 'B';
7249: } else {
7250: return '1';
7251: }
7252: }
7253:
7254: #
7255: # Now user is definitely in a course
7256: #
7257:
7258:
7259: # Course preferences
7260:
7261: if ($thisallowed=~/C/) {
7262: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7263: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7264: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7265: =~/\Q$rolecode\E/) {
7266: if (($priv ne 'pch') && ($priv ne 'plc')) {
7267: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7268: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7269: $env{'request.course.id'});
7270: }
7271: return '';
7272: }
7273:
7274: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7275: =~/\Q$unamedom\E/) {
7276: if (($priv ne 'pch') && ($priv ne 'plc')) {
7277: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7278: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7279: $env{'request.course.id'});
7280: }
7281: return '';
7282: }
7283: }
7284:
7285: # Resource preferences
7286:
7287: if ($thisallowed=~/R/) {
7288: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7289: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7290: if (($priv ne 'pch') && ($priv ne 'plc')) {
7291: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7292: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7293: }
7294: return '';
7295: }
7296: }
7297:
7298: # Restricted by state or randomout?
7299:
7300: if ($thisallowed=~/X/) {
7301: if ($env{'acc.randomout'}) {
7302: if (!$symb) { $symb=&symbread($uri,1); }
7303: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7304: return '';
7305: }
7306: }
7307: if (&condval($statecond)) {
7308: return '2';
7309: } else {
7310: return '';
7311: }
7312: }
7313:
7314: if ($thisallowed eq 'A') {
7315: return 'A';
7316: } elsif ($thisallowed eq 'B') {
7317: return 'B';
7318: }
7319: return 'F';
7320: }
7321:
7322: # ------------------------------------------- Check construction space access
7323:
7324: sub constructaccess {
7325: my ($url,$setpriv)=@_;
7326:
7327: # We do not allow editing of previous versions of files
7328: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7329:
7330: # Get username and domain from URL
7331: my ($ownername,$ownerdomain,$ownerhome);
7332:
7333: ($ownerdomain,$ownername) =
7334: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)/});
7335:
7336: # The URL does not really point to any authorspace, forget it
7337: unless (($ownername) && ($ownerdomain)) { return ''; }
7338:
7339: # Now we need to see if the user has access to the authorspace of
7340: # $ownername at $ownerdomain
7341:
7342: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7343: # Real author for this?
7344: $ownerhome = $env{'user.home'};
7345: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7346: return ($ownername,$ownerdomain,$ownerhome);
7347: }
7348: } else {
7349: # Co-author for this?
7350: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7351: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7352: $ownerhome = &homeserver($ownername,$ownerdomain);
7353: return ($ownername,$ownerdomain,$ownerhome);
7354: }
7355: }
7356:
7357: # We don't have any access right now. If we are not possibly going to do anything about this,
7358: # we might as well leave
7359: unless ($setpriv) { return ''; }
7360:
7361: # Backdoor access?
7362: my $allowed=&allowed('eco',$ownerdomain);
7363: # Nope
7364: unless ($allowed) { return ''; }
7365: # Looks like we may have access, but could be locked by the owner of the construction space
7366: if ($allowed eq 'U') {
7367: my %blocked=&get('environment',['domcoord.author'],
7368: $ownerdomain,$ownername);
7369: # Is blocked by owner
7370: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7371: }
7372: if (($allowed eq 'F') || ($allowed eq 'U')) {
7373: # Grant temporary access
7374: my $then=$env{'user.login.time'};
7375: my $update=$env{'user.update.time'};
7376: if (!$update) { $update = $then; }
7377: my $refresh=$env{'user.refresh.time'};
7378: if (!$refresh) { $refresh = $update; }
7379: my $now = time;
7380: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7381: $now,'ca','constructaccess');
7382: $ownerhome = &homeserver($ownername,$ownerdomain);
7383: return($ownername,$ownerdomain,$ownerhome);
7384: }
7385: # No business here
7386: return '';
7387: }
7388:
7389: # ----------------------------------------------------------- Content Blocking
7390:
7391: {
7392: # Caches for faster Course Contents display where content blocking
7393: # is in operation (i.e., interval param set) for timed quiz.
7394: #
7395: # User for whom data are being temporarily cached.
7396: my $cacheduser='';
7397: # Cached blockers for this user (a hash of blocking items).
7398: my %cachedblockers=();
7399: # When the data were last cached.
7400: my $cachedlast='';
7401:
7402: sub load_all_blockers {
7403: my ($uname,$udom,$blocks)=@_;
7404: if (($uname ne '') && ($udom ne '')) {
7405: if (($cacheduser eq $uname.':'.$udom) &&
7406: (abs($cachedlast-time)<5)) {
7407: return;
7408: }
7409: }
7410: $cachedlast=time;
7411: $cacheduser=$uname.':'.$udom;
7412: %cachedblockers = &get_commblock_resources($blocks);
7413: }
7414:
7415: sub get_comm_blocks {
7416: my ($cdom,$cnum) = @_;
7417: if ($cdom eq '' || $cnum eq '') {
7418: return unless ($env{'request.course.id'});
7419: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7420: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7421: }
7422: my %commblocks;
7423: my $hashid=$cdom.'_'.$cnum;
7424: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7425: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7426: %commblocks = %{$blocksref};
7427: } else {
7428: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7429: my $cachetime = 600;
7430: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7431: }
7432: return %commblocks;
7433: }
7434:
7435: sub get_commblock_resources {
7436: my ($blocks) = @_;
7437: my %blockers = ();
7438: return %blockers unless ($env{'request.course.id'});
7439: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7440: my %commblocks;
7441: if (ref($blocks) eq 'HASH') {
7442: %commblocks = %{$blocks};
7443: } else {
7444: %commblocks = &get_comm_blocks();
7445: }
7446: return %blockers unless (keys(%commblocks) > 0);
7447: my $navmap = Apache::lonnavmaps::navmap->new();
7448: return %blockers unless (ref($navmap));
7449: my $now = time;
7450: foreach my $block (keys(%commblocks)) {
7451: if ($block =~ /^(\d+)____(\d+)$/) {
7452: my ($start,$end) = ($1,$2);
7453: if ($start <= $now && $end >= $now) {
7454: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7455: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7456: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7457: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7458: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7459: }
7460: }
7461: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7462: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7463: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7464: }
7465: }
7466: }
7467: }
7468: }
7469: } elsif ($block =~ /^firstaccess____(.+)$/) {
7470: my $item = $1;
7471: my @to_test;
7472: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7473: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7474: my @interval;
7475: my $type = 'map';
7476: if ($item eq 'course') {
7477: $type = 'course';
7478: @interval=&EXT("resource.0.interval");
7479: } else {
7480: if ($item =~ /___\d+___/) {
7481: $type = 'resource';
7482: @interval=&EXT("resource.0.interval",$item);
7483: if (ref($navmap)) {
7484: my $res = $navmap->getBySymb($item);
7485: push(@to_test,$res);
7486: }
7487: } else {
7488: my $mapsymb = &symbread($item,1);
7489: if ($mapsymb) {
7490: if (ref($navmap)) {
7491: my $mapres = $navmap->getBySymb($mapsymb);
7492: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
7493: foreach my $res (@to_test) {
7494: my $symb = $res->symb();
7495: next if ($symb eq $mapsymb);
7496: if ($symb ne '') {
7497: @interval=&EXT("resource.0.interval",$symb);
7498: if ($interval[1] eq 'map') {
7499: last;
7500: }
7501: }
7502: }
7503: }
7504: }
7505: }
7506: }
7507: if ($interval[0] =~ /^\d+/) {
7508: my ($timelimit) = split(/_/,$interval[0]);
7509: my $first_access;
7510: if ($type eq 'resource') {
7511: $first_access=&get_first_access($interval[1],$item);
7512: } elsif ($type eq 'map') {
7513: $first_access=&get_first_access($interval[1],undef,$item);
7514: } else {
7515: $first_access=&get_first_access($interval[1]);
7516: }
7517: if ($first_access) {
7518: my $timesup = $first_access+$timelimit;
7519: if ($timesup > $now) {
7520: my $activeblock;
7521: foreach my $res (@to_test) {
7522: if ($res->answerable()) {
7523: $activeblock = 1;
7524: last;
7525: }
7526: }
7527: if ($activeblock) {
7528: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7529: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7530: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7531: }
7532: }
7533: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7534: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7535: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7536: }
7537: }
7538: }
7539: }
7540: }
7541: }
7542: }
7543: }
7544: }
7545: }
7546: return %blockers;
7547: }
7548:
7549: sub has_comm_blocking {
7550: my ($priv,$symb,$uri,$blocks) = @_;
7551: my @blockers;
7552: return unless ($env{'request.course.id'});
7553: return unless ($priv eq 'bre');
7554: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7555: return if ($env{'request.state'} eq 'construct');
7556: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
7557: return unless (keys(%cachedblockers) > 0);
7558: my (%possibles,@symbs);
7559: if (!$symb) {
7560: $symb = &symbread($uri,1,1,1,\%possibles);
7561: }
7562: if ($symb) {
7563: @symbs = ($symb);
7564: } elsif (keys(%possibles)) {
7565: @symbs = keys(%possibles);
7566: }
7567: my $noblock;
7568: foreach my $symb (@symbs) {
7569: last if ($noblock);
7570: my ($map,$resid,$resurl)=&decode_symb($symb);
7571: foreach my $block (keys(%cachedblockers)) {
7572: if ($block =~ /^firstaccess____(.+)$/) {
7573: my $item = $1;
7574: if (($item eq $map) || ($item eq $symb)) {
7575: $noblock = 1;
7576: last;
7577: }
7578: }
7579: if (ref($cachedblockers{$block}) eq 'HASH') {
7580: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
7581: if ($cachedblockers{$block}{'resources'}{$symb}) {
7582: unless (grep(/^\Q$block\E$/,@blockers)) {
7583: push(@blockers,$block);
7584: }
7585: }
7586: }
7587: }
7588: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
7589: if ($cachedblockers{$block}{'maps'}{$map}) {
7590: unless (grep(/^\Q$block\E$/,@blockers)) {
7591: push(@blockers,$block);
7592: }
7593: }
7594: }
7595: }
7596: }
7597: return if ($noblock);
7598: return @blockers;
7599: }
7600: }
7601:
7602: # -------------------------------- Deversion and split uri into path an filename
7603:
7604: #
7605: # Removes the version from a URI and
7606: # splits it in to its filename and path to the filename.
7607: # Seems like File::Basename could have done this more clearly.
7608: # Parameters:
7609: # $uri - input URI
7610: # Returns:
7611: # Two element list consisting of
7612: # $pathname - the URI up to and excluding the trailing /
7613: # $filename - The part of the URI following the last /
7614: # NOTE:
7615: # Another realization of this is simply:
7616: # use File::Basename;
7617: # ...
7618: # $uri = shift;
7619: # $filename = basename($uri);
7620: # $path = dirname($uri);
7621: # return ($filename, $path);
7622: #
7623: # The implementation below is probably faster however.
7624: #
7625: sub split_uri_for_cond {
7626: my $uri=&deversion(&declutter(shift));
7627: my @uriparts=split(/\//,$uri);
7628: my $filename=pop(@uriparts);
7629: my $pathname=join('/',@uriparts);
7630: return ($pathname,$filename);
7631: }
7632: # --------------------------------------------------- Is a resource on the map?
7633:
7634: sub is_on_map {
7635: my ($pathname,$filename) = &split_uri_for_cond(shift);
7636: #Trying to find the conditional for the file
7637: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7638: /\&\Q$filename\E\:([\d\|]+)\&/);
7639: if ($match) {
7640: return (1,$1);
7641: } else {
7642: return (0,0);
7643: }
7644: }
7645:
7646: # --------------------------------------------------------- Get symb from alias
7647:
7648: sub get_symb_from_alias {
7649: my $symb=shift;
7650: my ($map,$resid,$url)=&decode_symb($symb);
7651: # Already is a symb
7652: if ($url) { return $symb; }
7653: # Must be an alias
7654: my $aliassymb='';
7655: my %bighash;
7656: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7657: &GDBM_READER(),0640)) {
7658: my $rid=$bighash{'mapalias_'.$symb};
7659: if ($rid) {
7660: my ($mapid,$resid)=split(/\./,$rid);
7661: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7662: $resid,$bighash{'src_'.$rid});
7663: }
7664: untie %bighash;
7665: }
7666: return $aliassymb;
7667: }
7668:
7669: # ----------------------------------------------------------------- Define Role
7670:
7671: sub definerole {
7672: if (allowed('mcr','/')) {
7673: my ($rolename,$sysrole,$domrole,$courole)=@_;
7674: foreach my $role (split(':',$sysrole)) {
7675: my ($crole,$cqual)=split(/\&/,$role);
7676: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7677: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7678: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7679: return "refused:s:$crole&$cqual";
7680: }
7681: }
7682: }
7683: foreach my $role (split(':',$domrole)) {
7684: my ($crole,$cqual)=split(/\&/,$role);
7685: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7686: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7687: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7688: return "refused:d:$crole&$cqual";
7689: }
7690: }
7691: }
7692: foreach my $role (split(':',$courole)) {
7693: my ($crole,$cqual)=split(/\&/,$role);
7694: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7695: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7696: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7697: return "refused:c:$crole&$cqual";
7698: }
7699: }
7700: }
7701: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7702: "$env{'user.domain'}:$env{'user.name'}:".
7703: "rolesdef_$rolename=".
7704: escape($sysrole.'_'.$domrole.'_'.$courole);
7705: return reply($command,$env{'user.home'});
7706: } else {
7707: return 'refused';
7708: }
7709: }
7710:
7711: # ---------------- Make a metadata query against the network of library servers
7712:
7713: sub metadata_query {
7714: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7715: my %rhash;
7716: my %libserv = &all_library();
7717: my @server_list = (defined($server_array) ? @$server_array
7718: : keys(%libserv) );
7719: for my $server (@server_list) {
7720: my $domains = '';
7721: if (ref($domains_hash) eq 'HASH') {
7722: $domains = $domains_hash->{$server};
7723: }
7724: unless ($custom or $customshow) {
7725: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7726: $rhash{$server}=$reply;
7727: }
7728: else {
7729: my $reply=&reply("querysend:".&escape($query).':'.
7730: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7731: $server);
7732: $rhash{$server}=$reply;
7733: }
7734: }
7735: return \%rhash;
7736: }
7737:
7738: # ----------------------------------------- Send log queries and wait for reply
7739:
7740: sub log_query {
7741: my ($uname,$udom,$query,%filters)=@_;
7742: my $uhome=&homeserver($uname,$udom);
7743: if ($uhome eq 'no_host') { return 'error: no_host'; }
7744: my $uhost=&hostname($uhome);
7745: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7746: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7747: $uhome);
7748: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7749: return get_query_reply($queryid);
7750: }
7751:
7752: # -------------------------- Update MySQL table for portfolio file
7753:
7754: sub update_portfolio_table {
7755: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7756: if ($group ne '') {
7757: $file_name =~s /^\Q$group\E//;
7758: }
7759: my $homeserver = &homeserver($uname,$udom);
7760: my $queryid=
7761: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7762: ':'.&escape($file_name).':'.$action,$homeserver);
7763: my $reply = &get_query_reply($queryid);
7764: return $reply;
7765: }
7766:
7767: # -------------------------- Update MySQL allusers table
7768:
7769: sub update_allusers_table {
7770: my ($uname,$udom,$names) = @_;
7771: my $homeserver = &homeserver($uname,$udom);
7772: my $queryid=
7773: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7774: 'lastname='.&escape($names->{'lastname'}).'%%'.
7775: 'firstname='.&escape($names->{'firstname'}).'%%'.
7776: 'middlename='.&escape($names->{'middlename'}).'%%'.
7777: 'generation='.&escape($names->{'generation'}).'%%'.
7778: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7779: 'id='.&escape($names->{'id'}),$homeserver);
7780: return;
7781: }
7782:
7783: # ------- Request retrieval of institutional classlists for course(s)
7784:
7785: sub fetch_enrollment_query {
7786: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7787: my $homeserver;
7788: my $maxtries = 1;
7789: if ($context eq 'automated') {
7790: $homeserver = $perlvar{'lonHostID'};
7791: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7792: } else {
7793: $homeserver = &homeserver($cnum,$dom);
7794: }
7795: my $host=&hostname($homeserver);
7796: my $cmd = '';
7797: foreach my $affiliate (keys(%{$affiliatesref})) {
7798: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7799: }
7800: $cmd =~ s/%%$//;
7801: $cmd = &escape($cmd);
7802: my $query = 'fetchenrollment';
7803: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7804: unless ($queryid=~/^\Q$host\E\_/) {
7805: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7806: return 'error: '.$queryid;
7807: }
7808: my $reply = &get_query_reply($queryid);
7809: my $tries = 1;
7810: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7811: $reply = &get_query_reply($queryid);
7812: $tries ++;
7813: }
7814: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7815: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7816: } else {
7817: my @responses = split(/:/,$reply);
7818: if ($homeserver eq $perlvar{'lonHostID'}) {
7819: foreach my $line (@responses) {
7820: my ($key,$value) = split(/=/,$line,2);
7821: $$replyref{$key} = $value;
7822: }
7823: } else {
7824: my $pathname = LONCAPA::tempdir();
7825: foreach my $line (@responses) {
7826: my ($key,$value) = split(/=/,$line);
7827: $$replyref{$key} = $value;
7828: if ($value > 0) {
7829: foreach my $item (@{$$affiliatesref{$key}}) {
7830: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7831: my $destname = $pathname.'/'.$filename;
7832: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7833: if ($xml_classlist =~ /^error/) {
7834: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7835: } else {
7836: if ( open(FILE,">$destname") ) {
7837: print FILE &unescape($xml_classlist);
7838: close(FILE);
7839: } else {
7840: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7841: }
7842: }
7843: }
7844: }
7845: }
7846: }
7847: return 'ok';
7848: }
7849: return 'error';
7850: }
7851:
7852: sub get_query_reply {
7853: my $queryid=shift;
7854: my $replyfile=LONCAPA::tempdir().$queryid;
7855: my $reply='';
7856: for (1..100) {
7857: sleep(0.2);
7858: if (-e $replyfile.'.end') {
7859: if (open(my $fh,$replyfile)) {
7860: $reply = join('',<$fh>);
7861: close($fh);
7862: } else { return 'error: reply_file_error'; }
7863: return &unescape($reply);
7864: }
7865: }
7866: return 'timeout:'.$queryid;
7867: }
7868:
7869: sub courselog_query {
7870: #
7871: # possible filters:
7872: # url: url or symb
7873: # username
7874: # domain
7875: # action: view, submit, grade
7876: # start: timestamp
7877: # end: timestamp
7878: #
7879: my (%filters)=@_;
7880: unless ($env{'request.course.id'}) { return 'no_course'; }
7881: if ($filters{'url'}) {
7882: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7883: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7884: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7885: }
7886: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7887: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7888: return &log_query($cname,$cdom,'courselog',%filters);
7889: }
7890:
7891: sub userlog_query {
7892: #
7893: # possible filters:
7894: # action: log check role
7895: # start: timestamp
7896: # end: timestamp
7897: #
7898: my ($uname,$udom,%filters)=@_;
7899: return &log_query($uname,$udom,'userlog',%filters);
7900: }
7901:
7902: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7903:
7904: sub auto_run {
7905: my ($cnum,$cdom) = @_;
7906: my $response = 0;
7907: my $settings;
7908: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7909: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7910: $settings = $domconfig{'autoenroll'};
7911: if ($settings->{'run'} eq '1') {
7912: $response = 1;
7913: }
7914: } else {
7915: my $homeserver;
7916: if (&is_course($cdom,$cnum)) {
7917: $homeserver = &homeserver($cnum,$cdom);
7918: } else {
7919: $homeserver = &domain($cdom,'primary');
7920: }
7921: if ($homeserver ne 'no_host') {
7922: $response = &reply('autorun:'.$cdom,$homeserver);
7923: }
7924: }
7925: return $response;
7926: }
7927:
7928: sub auto_get_sections {
7929: my ($cnum,$cdom,$inst_coursecode) = @_;
7930: my $homeserver;
7931: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7932: $homeserver = &homeserver($cnum,$cdom);
7933: }
7934: if (!defined($homeserver)) {
7935: if ($cdom =~ /^$match_domain$/) {
7936: $homeserver = &domain($cdom,'primary');
7937: }
7938: }
7939: my @secs;
7940: if (defined($homeserver)) {
7941: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7942: unless ($response eq 'refused') {
7943: @secs = split(/:/,$response);
7944: }
7945: }
7946: return @secs;
7947: }
7948:
7949: sub auto_new_course {
7950: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7951: my $homeserver = &homeserver($cnum,$cdom);
7952: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7953: return $response;
7954: }
7955:
7956: sub auto_validate_courseID {
7957: my ($cnum,$cdom,$inst_course_id) = @_;
7958: my $homeserver = &homeserver($cnum,$cdom);
7959: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7960: return $response;
7961: }
7962:
7963: sub auto_validate_instcode {
7964: my ($cnum,$cdom,$instcode,$owner) = @_;
7965: my ($homeserver,$response);
7966: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7967: $homeserver = &homeserver($cnum,$cdom);
7968: }
7969: if (!defined($homeserver)) {
7970: if ($cdom =~ /^$match_domain$/) {
7971: $homeserver = &domain($cdom,'primary');
7972: }
7973: }
7974: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7975: &escape($instcode).':'.&escape($owner),$homeserver));
7976: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7977: return ($outcome,$description,$defaultcredits);
7978: }
7979:
7980: sub auto_create_password {
7981: my ($cnum,$cdom,$authparam,$udom) = @_;
7982: my ($homeserver,$response);
7983: my $create_passwd = 0;
7984: my $authchk = '';
7985: if ($udom =~ /^$match_domain$/) {
7986: $homeserver = &domain($udom,'primary');
7987: }
7988: if ($homeserver eq '') {
7989: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7990: $homeserver = &homeserver($cnum,$cdom);
7991: }
7992: }
7993: if ($homeserver eq '') {
7994: $authchk = 'nodomain';
7995: } else {
7996: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7997: if ($response eq 'refused') {
7998: $authchk = 'refused';
7999: } else {
8000: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8001: }
8002: }
8003: return ($authparam,$create_passwd,$authchk);
8004: }
8005:
8006: sub auto_photo_permission {
8007: my ($cnum,$cdom,$students) = @_;
8008: my $homeserver = &homeserver($cnum,$cdom);
8009: my ($outcome,$perm_reqd,$conditions) =
8010: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8011: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8012: return (undef,undef);
8013: }
8014: return ($outcome,$perm_reqd,$conditions);
8015: }
8016:
8017: sub auto_checkphotos {
8018: my ($uname,$udom,$pid) = @_;
8019: my $homeserver = &homeserver($uname,$udom);
8020: my ($result,$resulttype);
8021: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8022: &escape($uname).':'.&escape($pid),
8023: $homeserver));
8024: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8025: return (undef,undef);
8026: }
8027: if ($outcome) {
8028: ($result,$resulttype) = split(/:/,$outcome);
8029: }
8030: return ($result,$resulttype);
8031: }
8032:
8033: sub auto_photochoice {
8034: my ($cnum,$cdom) = @_;
8035: my $homeserver = &homeserver($cnum,$cdom);
8036: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8037: &escape($cdom),
8038: $homeserver)));
8039: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8040: return (undef,undef);
8041: }
8042: return ($update,$comment);
8043: }
8044:
8045: sub auto_photoupdate {
8046: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8047: my $homeserver = &homeserver($cnum,$dom);
8048: my $host=&hostname($homeserver);
8049: my $cmd = '';
8050: my $maxtries = 1;
8051: foreach my $affiliate (keys(%{$affiliatesref})) {
8052: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8053: }
8054: $cmd =~ s/%%$//;
8055: $cmd = &escape($cmd);
8056: my $query = 'institutionalphotos';
8057: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8058: unless ($queryid=~/^\Q$host\E\_/) {
8059: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8060: return 'error: '.$queryid;
8061: }
8062: my $reply = &get_query_reply($queryid);
8063: my $tries = 1;
8064: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8065: $reply = &get_query_reply($queryid);
8066: $tries ++;
8067: }
8068: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8069: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8070: } else {
8071: my @responses = split(/:/,$reply);
8072: my $outcome = shift(@responses);
8073: foreach my $item (@responses) {
8074: my ($key,$value) = split(/=/,$item);
8075: $$photo{$key} = $value;
8076: }
8077: return $outcome;
8078: }
8079: return 'error';
8080: }
8081:
8082: sub auto_instcode_format {
8083: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8084: $cat_order) = @_;
8085: my $courses = '';
8086: my @homeservers;
8087: if ($caller eq 'global') {
8088: my %servers = &get_servers($codedom,'library');
8089: foreach my $tryserver (keys(%servers)) {
8090: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8091: push(@homeservers,$tryserver);
8092: }
8093: }
8094: } elsif ($caller eq 'requests') {
8095: if ($codedom =~ /^$match_domain$/) {
8096: my $chome = &domain($codedom,'primary');
8097: unless ($chome eq 'no_host') {
8098: push(@homeservers,$chome);
8099: }
8100: }
8101: } else {
8102: push(@homeservers,&homeserver($caller,$codedom));
8103: }
8104: foreach my $code (keys(%{$instcodes})) {
8105: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8106: }
8107: chop($courses);
8108: my $ok_response = 0;
8109: my $response;
8110: while (@homeservers > 0 && $ok_response == 0) {
8111: my $server = shift(@homeservers);
8112: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8113: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8114: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8115: split(/:/,$response);
8116: %{$codes} = (%{$codes},&str2hash($codes_str));
8117: push(@{$codetitles},&str2array($codetitles_str));
8118: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8119: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8120: $ok_response = 1;
8121: }
8122: }
8123: if ($ok_response) {
8124: return 'ok';
8125: } else {
8126: return $response;
8127: }
8128: }
8129:
8130: sub auto_instcode_defaults {
8131: my ($domain,$returnhash,$code_order) = @_;
8132: my @homeservers;
8133:
8134: my %servers = &get_servers($domain,'library');
8135: foreach my $tryserver (keys(%servers)) {
8136: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8137: push(@homeservers,$tryserver);
8138: }
8139: }
8140:
8141: my $response;
8142: foreach my $server (@homeservers) {
8143: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8144: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8145:
8146: foreach my $pair (split(/\&/,$response)) {
8147: my ($name,$value)=split(/\=/,$pair);
8148: if ($name eq 'code_order') {
8149: @{$code_order} = split(/\&/,&unescape($value));
8150: } else {
8151: $returnhash->{&unescape($name)}=&unescape($value);
8152: }
8153: }
8154: return 'ok';
8155: }
8156:
8157: return $response;
8158: }
8159:
8160: sub auto_possible_instcodes {
8161: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8162: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8163: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8164: return;
8165: }
8166: my (@homeservers,$uhome);
8167: if (defined(&domain($domain,'primary'))) {
8168: $uhome=&domain($domain,'primary');
8169: push(@homeservers,&domain($domain,'primary'));
8170: } else {
8171: my %servers = &get_servers($domain,'library');
8172: foreach my $tryserver (keys(%servers)) {
8173: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8174: push(@homeservers,$tryserver);
8175: }
8176: }
8177: }
8178: my $response;
8179: foreach my $server (@homeservers) {
8180: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8181: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8182: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8183: split(':',$response);
8184: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8185: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8186: foreach my $item (split('&',$cat_title)) {
8187: my ($name,$value)=split('=',$item);
8188: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8189: }
8190: foreach my $item (split('&',$cat_order)) {
8191: my ($name,$value)=split('=',$item);
8192: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8193: }
8194: return 'ok';
8195: }
8196: return $response;
8197: }
8198:
8199: sub auto_courserequest_checks {
8200: my ($dom) = @_;
8201: my ($homeserver,%validations);
8202: if ($dom =~ /^$match_domain$/) {
8203: $homeserver = &domain($dom,'primary');
8204: }
8205: unless ($homeserver eq 'no_host') {
8206: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8207: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8208: my @items = split(/&/,$response);
8209: foreach my $item (@items) {
8210: my ($key,$value) = split('=',$item);
8211: $validations{&unescape($key)} = &thaw_unescape($value);
8212: }
8213: }
8214: }
8215: return %validations;
8216: }
8217:
8218: sub auto_courserequest_validation {
8219: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8220: my ($homeserver,$response);
8221: if ($dom =~ /^$match_domain$/) {
8222: $homeserver = &domain($dom,'primary');
8223: }
8224: unless ($homeserver eq 'no_host') {
8225: my $customdata;
8226: if (ref($custominfo) eq 'HASH') {
8227: $customdata = &freeze_escape($custominfo);
8228: }
8229: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8230: ':'.&escape($crstype).':'.&escape($inststatuslist).
8231: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8232: $customdata,$homeserver));
8233: }
8234: return $response;
8235: }
8236:
8237: sub auto_validate_class_sec {
8238: my ($cdom,$cnum,$owners,$inst_class) = @_;
8239: my $homeserver = &homeserver($cnum,$cdom);
8240: my $ownerlist;
8241: if (ref($owners) eq 'ARRAY') {
8242: $ownerlist = join(',',@{$owners});
8243: } else {
8244: $ownerlist = $owners;
8245: }
8246: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8247: &escape($ownerlist).':'.$cdom,$homeserver);
8248: return $response;
8249: }
8250:
8251: sub auto_crsreq_update {
8252: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8253: $code,$accessstart,$accessend,$inbound) = @_;
8254: my ($homeserver,%crsreqresponse);
8255: if ($cdom =~ /^$match_domain$/) {
8256: $homeserver = &domain($cdom,'primary');
8257: }
8258: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8259: my $info;
8260: if (ref($inbound) eq 'HASH') {
8261: $info = &freeze_escape($inbound);
8262: }
8263: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8264: ':'.&escape($action).':'.&escape($ownername).':'.
8265: &escape($ownerdomain).':'.&escape($fullname).':'.
8266: &escape($title).':'.&escape($code).':'.
8267: &escape($accessstart).':'.&escape($accessend).':'.$info,
8268: $homeserver);
8269: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8270: my @items = split(/&/,$response);
8271: foreach my $item (@items) {
8272: my ($key,$value) = split('=',$item);
8273: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8274: }
8275: }
8276: }
8277: return \%crsreqresponse;
8278: }
8279:
8280: sub check_instcode_cloning {
8281: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
8282: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8283: return;
8284: }
8285: my $canclone;
8286: if (@{$code_order} > 0) {
8287: my $instcoderegexp ='^';
8288: my @clonecodes = split(/\&/,$cloner);
8289: foreach my $item (@{$code_order}) {
8290: if (grep(/^\Q$item\E=/,@clonecodes)) {
8291: foreach my $pair (@clonecodes) {
8292: my ($key,$val) = split(/\=/,$pair,2);
8293: $val = &unescape($val);
8294: if ($key eq $item) {
8295: $instcoderegexp .= '('.$val.')';
8296: last;
8297: }
8298: }
8299: } else {
8300: $instcoderegexp .= $codedefaults->{$item};
8301: }
8302: }
8303: $instcoderegexp .= '$';
8304: my (@from,@to);
8305: eval {
8306: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8307: (@to) = ($clonetocode =~ /$instcoderegexp/);
8308: };
8309: if ((@from > 0) && (@to > 0)) {
8310: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8311: if (!@diffs) {
8312: $canclone = 1;
8313: }
8314: }
8315: }
8316: return $canclone;
8317: }
8318:
8319: sub default_instcode_cloning {
8320: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
8321: my (%codedefaults,@code_order,$canclone);
8322: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
8323: %codedefaults = %{$codedefaultsref};
8324: @code_order = @{$codeorderref};
8325: } elsif ($clonedom) {
8326: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
8327: }
8328: if (($domdefclone) && (@code_order)) {
8329: my @clonecodes = split(/\+/,$domdefclone);
8330: my $instcoderegexp ='^';
8331: foreach my $item (@code_order) {
8332: if (grep(/^\Q$item\E$/,@clonecodes)) {
8333: $instcoderegexp .= '('.$codedefaults{$item}.')';
8334: } else {
8335: $instcoderegexp .= $codedefaults{$item};
8336: }
8337: }
8338: $instcoderegexp .= '$';
8339: my (@from,@to);
8340: eval {
8341: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8342: (@to) = ($clonetocode =~ /$instcoderegexp/);
8343: };
8344: if ((@from > 0) && (@to > 0)) {
8345: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8346: if (!@diffs) {
8347: $canclone = 1;
8348: }
8349: }
8350: }
8351: return $canclone;
8352: }
8353:
8354: # ------------------------------------------------------- Course Group routines
8355:
8356: sub get_coursegroups {
8357: my ($cdom,$cnum,$group,$namespace) = @_;
8358: return(&dump($namespace,$cdom,$cnum,$group));
8359: }
8360:
8361: sub modify_coursegroup {
8362: my ($cdom,$cnum,$groupsettings) = @_;
8363: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8364: }
8365:
8366: sub toggle_coursegroup_status {
8367: my ($cdom,$cnum,$group,$action) = @_;
8368: my ($from_namespace,$to_namespace);
8369: if ($action eq 'delete') {
8370: $from_namespace = 'coursegroups';
8371: $to_namespace = 'deleted_groups';
8372: } else {
8373: $from_namespace = 'deleted_groups';
8374: $to_namespace = 'coursegroups';
8375: }
8376: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8377: if (my $tmp = &error(%curr_group)) {
8378: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8379: return ('read error',$tmp);
8380: } else {
8381: my %savedsettings = %curr_group;
8382: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8383: my $deloutcome;
8384: if ($result eq 'ok') {
8385: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8386: } else {
8387: return ('write error',$result);
8388: }
8389: if ($deloutcome eq 'ok') {
8390: return 'ok';
8391: } else {
8392: return ('delete error',$deloutcome);
8393: }
8394: }
8395: }
8396:
8397: sub modify_group_roles {
8398: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8399: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8400: my $role = 'gr/'.&escape($userprivs);
8401: my ($uname,$udom) = split(/:/,$user);
8402: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8403: if ($result eq 'ok') {
8404: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8405: }
8406: return $result;
8407: }
8408:
8409: sub modify_coursegroup_membership {
8410: my ($cdom,$cnum,$membership) = @_;
8411: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8412: return $result;
8413: }
8414:
8415: sub get_active_groups {
8416: my ($udom,$uname,$cdom,$cnum) = @_;
8417: my $now = time;
8418: my %groups = ();
8419: foreach my $key (keys(%env)) {
8420: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8421: my ($start,$end) = split(/\./,$env{$key});
8422: if (($end!=0) && ($end<$now)) { next; }
8423: if (($start!=0) && ($start>$now)) { next; }
8424: if ($1 eq $cdom && $2 eq $cnum) {
8425: $groups{$3} = $env{$key} ;
8426: }
8427: }
8428: }
8429: return %groups;
8430: }
8431:
8432: sub get_group_membership {
8433: my ($cdom,$cnum,$group) = @_;
8434: return(&dump('groupmembership',$cdom,$cnum,$group));
8435: }
8436:
8437: sub get_users_groups {
8438: my ($udom,$uname,$courseid) = @_;
8439: my @usersgroups;
8440: my $cachetime=1800;
8441:
8442: my $hashid="$udom:$uname:$courseid";
8443: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8444: if (defined($cached)) {
8445: @usersgroups = split(/:/,$grouplist);
8446: } else {
8447: $grouplist = '';
8448: my $courseurl = &courseid_to_courseurl($courseid);
8449: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8450: my $access_end = $env{'course.'.$courseid.
8451: '.default_enrollment_end_date'};
8452: my $now = time;
8453: foreach my $key (keys(%roleshash)) {
8454: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8455: my $group = $1;
8456: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8457: my $start = $2;
8458: my $end = $1;
8459: if ($start == -1) { next; } # deleted from group
8460: if (($start!=0) && ($start>$now)) { next; }
8461: if (($end!=0) && ($end<$now)) {
8462: if ($access_end && $access_end < $now) {
8463: if ($access_end - $end < 86400) {
8464: push(@usersgroups,$group);
8465: }
8466: }
8467: next;
8468: }
8469: push(@usersgroups,$group);
8470: }
8471: }
8472: }
8473: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8474: $grouplist = join(':',@usersgroups);
8475: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8476: }
8477: return @usersgroups;
8478: }
8479:
8480: sub devalidate_getgroups_cache {
8481: my ($udom,$uname,$cdom,$cnum)=@_;
8482: my $courseid = $cdom.'_'.$cnum;
8483:
8484: my $hashid="$udom:$uname:$courseid";
8485: &devalidate_cache_new('getgroups',$hashid);
8486: }
8487:
8488: # ------------------------------------------------------------------ Plain Text
8489:
8490: sub plaintext {
8491: my ($short,$type,$cid,$forcedefault) = @_;
8492: if ($short =~ m{^cr/}) {
8493: return (split('/',$short))[-1];
8494: }
8495: if (!defined($cid)) {
8496: $cid = $env{'request.course.id'};
8497: }
8498: my %rolenames = (
8499: Course => 'std',
8500: Community => 'alt1',
8501: );
8502: if ($cid ne '') {
8503: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8504: unless ($forcedefault) {
8505: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8506: &Apache::lonlocal::mt_escape(\$roletext);
8507: return &Apache::lonlocal::mt($roletext);
8508: }
8509: }
8510: }
8511: if ((defined($type)) && (defined($rolenames{$type})) &&
8512: (defined($rolenames{$type})) &&
8513: (defined($prp{$short}{$rolenames{$type}}))) {
8514: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8515: } elsif ($cid ne '') {
8516: my $crstype = $env{'course.'.$cid.'.type'};
8517: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8518: (defined($prp{$short}{$rolenames{$crstype}}))) {
8519: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8520: }
8521: }
8522: return &Apache::lonlocal::mt($prp{$short}{'std'});
8523: }
8524:
8525: # ----------------------------------------------------------------- Assign Role
8526:
8527: sub assignrole {
8528: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8529: $context)=@_;
8530: my $mrole;
8531: if ($role =~ /^cr\//) {
8532: my $cwosec=$url;
8533: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8534: unless (&allowed('ccr',$cwosec)) {
8535: my $refused = 1;
8536: if ($context eq 'requestcourses') {
8537: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8538: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8539: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8540: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8541: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8542: if ($crsenv{'internal.courseowner'} eq
8543: $env{'user.name'}.':'.$env{'user.domain'}) {
8544: $refused = '';
8545: }
8546: }
8547: }
8548: }
8549: }
8550: if ($refused) {
8551: &logthis('Refused custom assignrole: '.
8552: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8553: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8554: return 'refused';
8555: }
8556: }
8557: $mrole='cr';
8558: } elsif ($role =~ /^gr\//) {
8559: my $cwogrp=$url;
8560: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8561: unless (&allowed('mdg',$cwogrp)) {
8562: &logthis('Refused group assignrole: '.
8563: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8564: $env{'user.name'}.' at '.$env{'user.domain'});
8565: return 'refused';
8566: }
8567: $mrole='gr';
8568: } else {
8569: my $cwosec=$url;
8570: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8571: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8572: my $refused;
8573: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8574: if (!(&allowed('c'.$role,$url))) {
8575: $refused = 1;
8576: }
8577: } else {
8578: $refused = 1;
8579: }
8580: if ($refused) {
8581: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8582: if (!$selfenroll && $context eq 'course') {
8583: my %crsenv;
8584: if ($role eq 'cc' || $role eq 'co') {
8585: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8586: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8587: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8588: if ($crsenv{'internal.courseowner'} eq
8589: $env{'user.name'}.':'.$env{'user.domain'}) {
8590: $refused = '';
8591: }
8592: }
8593: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8594: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8595: if ($crsenv{'internal.courseowner'} eq
8596: $env{'user.name'}.':'.$env{'user.domain'}) {
8597: $refused = '';
8598: }
8599: }
8600: }
8601: }
8602: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8603: $refused = '';
8604: } elsif ($context eq 'requestcourses') {
8605: my @possroles = ('st','ta','ep','in','cc','co');
8606: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8607: my $wrongcc;
8608: if ($cnum =~ /^$match_community$/) {
8609: $wrongcc = 1 if ($role eq 'cc');
8610: } else {
8611: $wrongcc = 1 if ($role eq 'co');
8612: }
8613: unless ($wrongcc) {
8614: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8615: if ($crsenv{'internal.courseowner'} eq
8616: $env{'user.name'}.':'.$env{'user.domain'}) {
8617: $refused = '';
8618: }
8619: }
8620: }
8621: } elsif ($context eq 'requestauthor') {
8622: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8623: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8624: if ($env{'environment.requestauthor'} eq 'automatic') {
8625: $refused = '';
8626: } else {
8627: my %domdefaults = &get_domain_defaults($udom);
8628: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8629: my $checkbystatus;
8630: if ($env{'user.adv'}) {
8631: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8632: if ($disposition eq 'automatic') {
8633: $refused = '';
8634: } elsif ($disposition eq '') {
8635: $checkbystatus = 1;
8636: }
8637: } else {
8638: $checkbystatus = 1;
8639: }
8640: if ($checkbystatus) {
8641: if ($env{'environment.inststatus'}) {
8642: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8643: foreach my $type (@inststatuses) {
8644: if (($type ne '') &&
8645: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8646: $refused = '';
8647: }
8648: }
8649: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8650: $refused = '';
8651: }
8652: }
8653: }
8654: }
8655: }
8656: }
8657: if ($refused) {
8658: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8659: ' '.$role.' '.$end.' '.$start.' by '.
8660: $env{'user.name'}.' at '.$env{'user.domain'});
8661: return 'refused';
8662: }
8663: }
8664: } elsif ($role eq 'au') {
8665: if ($url ne '/'.$udom.'/') {
8666: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8667: ' to assign author role for '.$uname.':'.$udom.
8668: ' in domain: '.$url.' refused (wrong domain).');
8669: return 'refused';
8670: }
8671: }
8672: $mrole=$role;
8673: }
8674: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8675: "$udom:$uname:$url".'_'."$mrole=$role";
8676: if ($end) { $command.='_'.$end; }
8677: if ($start) {
8678: if ($end) {
8679: $command.='_'.$start;
8680: } else {
8681: $command.='_0_'.$start;
8682: }
8683: }
8684: my $origstart = $start;
8685: my $origend = $end;
8686: my $delflag;
8687: # actually delete
8688: if ($deleteflag) {
8689: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8690: # modify command to delete the role
8691: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8692: "$udom:$uname:$url".'_'."$mrole";
8693: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8694: # set start and finish to negative values for userrolelog
8695: $start=-1;
8696: $end=-1;
8697: $delflag = 1;
8698: }
8699: }
8700: # send command
8701: my $answer=&reply($command,&homeserver($uname,$udom));
8702: # log new user role if status is ok
8703: if ($answer eq 'ok') {
8704: &userrolelog($role,$uname,$udom,$url,$start,$end);
8705: if (($role eq 'cc') || ($role eq 'in') ||
8706: ($role eq 'ep') || ($role eq 'ad') ||
8707: ($role eq 'ta') || ($role eq 'st') ||
8708: ($role=~/^cr/) || ($role eq 'gr') ||
8709: ($role eq 'co')) {
8710: # for course roles, perform group memberships changes triggered by role change.
8711: unless ($role =~ /^gr/) {
8712: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8713: $origstart,$selfenroll,$context);
8714: }
8715: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8716: $selfenroll,$context);
8717: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8718: ($role eq 'au') || ($role eq 'dc')) {
8719: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8720: $context);
8721: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8722: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8723: $context);
8724: }
8725: if ($role eq 'cc') {
8726: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8727: }
8728: }
8729: return $answer;
8730: }
8731:
8732: sub autoupdate_coowners {
8733: my ($url,$end,$start,$uname,$udom) = @_;
8734: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8735: if (($cdom ne '') && ($cnum ne '')) {
8736: my $now = time;
8737: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8738: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8739: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8740: my $instcode = $coursehash{'internal.coursecode'};
8741: if ($instcode ne '') {
8742: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8743: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8744: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8745: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8746: if ($result eq 'valid') {
8747: if ($coursehash{'internal.co-owners'}) {
8748: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8749: push(@newcoowners,$coowner);
8750: }
8751: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8752: push(@newcoowners,$uname.':'.$udom);
8753: }
8754: @newcoowners = sort(@newcoowners);
8755: } else {
8756: push(@newcoowners,$uname.':'.$udom);
8757: }
8758: } else {
8759: if ($coursehash{'internal.co-owners'}) {
8760: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8761: unless ($coowner eq $uname.':'.$udom) {
8762: push(@newcoowners,$coowner);
8763: }
8764: }
8765: unless (@newcoowners > 0) {
8766: $delcoowners = 1;
8767: $coowners = '';
8768: }
8769: }
8770: }
8771: if (@newcoowners || $delcoowners) {
8772: &store_coowners($cdom,$cnum,$coursehash{'home'},
8773: $delcoowners,@newcoowners);
8774: }
8775: }
8776: }
8777: }
8778: }
8779: }
8780: }
8781:
8782: sub store_coowners {
8783: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8784: my $cid = $cdom.'_'.$cnum;
8785: my ($coowners,$delresult,$putresult);
8786: if (@newcoowners) {
8787: $coowners = join(',',@newcoowners);
8788: my %coownershash = (
8789: 'internal.co-owners' => $coowners,
8790: );
8791: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8792: if ($putresult eq 'ok') {
8793: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8794: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8795: }
8796: }
8797: }
8798: if ($delcoowners) {
8799: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8800: if ($delresult eq 'ok') {
8801: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8802: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8803: }
8804: }
8805: }
8806: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8807: my %crsinfo =
8808: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8809: if (ref($crsinfo{$cid}) eq 'HASH') {
8810: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8811: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8812: }
8813: }
8814: }
8815:
8816: # -------------------------------------------------- Modify user authentication
8817: # Overrides without validation
8818:
8819: sub modifyuserauth {
8820: my ($udom,$uname,$umode,$upass)=@_;
8821: my $uhome=&homeserver($uname,$udom);
8822: unless (&allowed('mau',$udom)) { return 'refused'; }
8823: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8824: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8825: ' in domain '.$env{'request.role.domain'});
8826: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8827: &escape($upass),$uhome);
8828: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8829: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8830: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8831: &log($udom,,$uname,$uhome,
8832: 'Authentication changed by '.$env{'user.domain'}.', '.
8833: $env{'user.name'}.', '.$umode.
8834: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8835: unless ($reply eq 'ok') {
8836: &logthis('Authentication mode error: '.$reply);
8837: return 'error: '.$reply;
8838: }
8839: return 'ok';
8840: }
8841:
8842: # --------------------------------------------------------------- Modify a user
8843:
8844: sub modifyuser {
8845: my ($udom, $uname, $uid,
8846: $umode, $upass, $first,
8847: $middle, $last, $gene,
8848: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8849: $udom= &LONCAPA::clean_domain($udom);
8850: $uname=&LONCAPA::clean_username($uname);
8851: my $showcandelete = 'none';
8852: if (ref($candelete) eq 'ARRAY') {
8853: if (@{$candelete} > 0) {
8854: $showcandelete = join(', ',@{$candelete});
8855: }
8856: }
8857: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8858: $umode.', '.$first.', '.$middle.', '.
8859: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8860: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8861: ' desiredhome not specified').
8862: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8863: ' in domain '.$env{'request.role.domain'});
8864: my $uhome=&homeserver($uname,$udom,'true');
8865: my $newuser;
8866: if ($uhome eq 'no_host') {
8867: $newuser = 1;
8868: }
8869: # ----------------------------------------------------------------- Create User
8870: if (($uhome eq 'no_host') &&
8871: (($umode && $upass) || ($umode eq 'localauth'))) {
8872: my $unhome='';
8873: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8874: $unhome = $desiredhome;
8875: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8876: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8877: } else { # load balancing routine for determining $unhome
8878: my $loadm=10000000;
8879: my %servers = &get_servers($udom,'library');
8880: foreach my $tryserver (keys(%servers)) {
8881: my $answer=reply('load',$tryserver);
8882: if (($answer=~/\d+/) && ($answer<$loadm)) {
8883: $loadm=$answer;
8884: $unhome=$tryserver;
8885: }
8886: }
8887: }
8888: if (($unhome eq '') || ($unhome eq 'no_host')) {
8889: return 'error: unable to find a home server for '.$uname.
8890: ' in domain '.$udom;
8891: }
8892: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8893: &escape($upass),$unhome);
8894: unless ($reply eq 'ok') {
8895: return 'error: '.$reply;
8896: }
8897: $uhome=&homeserver($uname,$udom,'true');
8898: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8899: return 'error: unable verify users home machine.';
8900: }
8901: } # End of creation of new user
8902: # ---------------------------------------------------------------------- Add ID
8903: if ($uid) {
8904: $uid=~tr/A-Z/a-z/;
8905: my %uidhash=&idrget($udom,$uname);
8906: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8907: && (!$forceid)) {
8908: unless ($uid eq $uidhash{$uname}) {
8909: return 'error: user id "'.$uid.'" does not match '.
8910: 'current user id "'.$uidhash{$uname}.'".';
8911: }
8912: } else {
8913: &idput($udom,{$uname => $uid},$uhome,'ids');
8914: }
8915: }
8916: # -------------------------------------------------------------- Add names, etc
8917: my @tmp=&get('environment',
8918: ['firstname','middlename','lastname','generation','id',
8919: 'permanentemail','inststatus'],
8920: $udom,$uname);
8921: my (%names,%oldnames);
8922: if ($tmp[0] =~ m/^error:.*/) {
8923: %names=();
8924: } else {
8925: %names = @tmp;
8926: %oldnames = %names;
8927: }
8928: #
8929: # If name, email and/or uid are blank (e.g., because an uploaded file
8930: # of users did not contain them), do not overwrite existing values
8931: # unless field is in $candelete array ref.
8932: #
8933:
8934: my @fields = ('firstname','middlename','lastname','generation',
8935: 'permanentemail','id');
8936: my %newvalues;
8937: if (ref($candelete) eq 'ARRAY') {
8938: foreach my $field (@fields) {
8939: if (grep(/^\Q$field\E$/,@{$candelete})) {
8940: if ($field eq 'firstname') {
8941: $names{$field} = $first;
8942: } elsif ($field eq 'middlename') {
8943: $names{$field} = $middle;
8944: } elsif ($field eq 'lastname') {
8945: $names{$field} = $last;
8946: } elsif ($field eq 'generation') {
8947: $names{$field} = $gene;
8948: } elsif ($field eq 'permanentemail') {
8949: $names{$field} = $email;
8950: } elsif ($field eq 'id') {
8951: $names{$field} = $uid;
8952: }
8953: }
8954: }
8955: }
8956: if ($first) { $names{'firstname'} = $first; }
8957: if (defined($middle)) { $names{'middlename'} = $middle; }
8958: if ($last) { $names{'lastname'} = $last; }
8959: if (defined($gene)) { $names{'generation'} = $gene; }
8960: if ($email) {
8961: $email=~s/[^\w\@\.\-\,]//gs;
8962: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8963: }
8964: if ($uid) { $names{'id'} = $uid; }
8965: if (defined($inststatus)) {
8966: $names{'inststatus'} = '';
8967: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8968: if (ref($usertypes) eq 'HASH') {
8969: my @okstatuses;
8970: foreach my $item (split(/:/,$inststatus)) {
8971: if (defined($usertypes->{$item})) {
8972: push(@okstatuses,$item);
8973: }
8974: }
8975: if (@okstatuses) {
8976: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8977: }
8978: }
8979: }
8980: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8981: $umode.', '.$first.', '.$middle.', '.
8982: $last.', '.$gene.', '.$email.', '.$inststatus;
8983: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8984: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8985: } else {
8986: $logmsg .= ' during self creation';
8987: }
8988: my $changed;
8989: if ($newuser) {
8990: $changed = 1;
8991: } else {
8992: foreach my $field (@fields) {
8993: if ($names{$field} ne $oldnames{$field}) {
8994: $changed = 1;
8995: last;
8996: }
8997: }
8998: }
8999: unless ($changed) {
9000: $logmsg = 'No changes in user information needed for: '.$logmsg;
9001: &logthis($logmsg);
9002: return 'ok';
9003: }
9004: my $reply = &put('environment', \%names, $udom,$uname);
9005: if ($reply ne 'ok') {
9006: return 'error: '.$reply;
9007: }
9008: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9009: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9010: }
9011: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9012: &devalidate_cache_new('namescache',$uname.':'.$udom);
9013: $logmsg = 'Success modifying user '.$logmsg;
9014: &logthis($logmsg);
9015: return 'ok';
9016: }
9017:
9018: # -------------------------------------------------------------- Modify student
9019:
9020: sub modifystudent {
9021: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9022: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9023: $selfenroll,$context,$inststatus,$credits)=@_;
9024: if (!$cid) {
9025: unless ($cid=$env{'request.course.id'}) {
9026: return 'not_in_class';
9027: }
9028: }
9029: # --------------------------------------------------------------- Make the user
9030: my $reply=&modifyuser
9031: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9032: $desiredhome,$email,$inststatus);
9033: unless ($reply eq 'ok') { return $reply; }
9034: # This will cause &modify_student_enrollment to get the uid from the
9035: # student's environment
9036: $uid = undef if (!$forceid);
9037: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9038: $gene,$usec,$end,$start,$type,$locktype,
9039: $cid,$selfenroll,$context,$credits);
9040: return $reply;
9041: }
9042:
9043: sub modify_student_enrollment {
9044: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9045: $locktype,$cid,$selfenroll,$context,$credits) = @_;
9046: my ($cdom,$cnum,$chome);
9047: if (!$cid) {
9048: unless ($cid=$env{'request.course.id'}) {
9049: return 'not_in_class';
9050: }
9051: $cdom=$env{'course.'.$cid.'.domain'};
9052: $cnum=$env{'course.'.$cid.'.num'};
9053: } else {
9054: ($cdom,$cnum)=split(/_/,$cid);
9055: }
9056: $chome=$env{'course.'.$cid.'.home'};
9057: if (!$chome) {
9058: $chome=&homeserver($cnum,$cdom);
9059: }
9060: if (!$chome) { return 'unknown_course'; }
9061: # Make sure the user exists
9062: my $uhome=&homeserver($uname,$udom);
9063: if (($uhome eq '') || ($uhome eq 'no_host')) {
9064: return 'error: no such user';
9065: }
9066: # Get student data if we were not given enough information
9067: if (!defined($first) || $first eq '' ||
9068: !defined($last) || $last eq '' ||
9069: !defined($uid) || $uid eq '' ||
9070: !defined($middle) || $middle eq '' ||
9071: !defined($gene) || $gene eq '') {
9072: # They did not supply us with enough data to enroll the student, so
9073: # we need to pick up more information.
9074: my %tmp = &get('environment',
9075: ['firstname','middlename','lastname', 'generation','id']
9076: ,$udom,$uname);
9077:
9078: #foreach my $key (keys(%tmp)) {
9079: # &logthis("key $key = ".$tmp{$key});
9080: #}
9081: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9082: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9083: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9084: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9085: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9086: }
9087: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9088: my $user = "$uname:$udom";
9089: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9090: my $reply=cput('classlist',
9091: {$user =>
9092: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
9093: $cdom,$cnum);
9094: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9095: &devalidate_getsection_cache($udom,$uname,$cid);
9096: } else {
9097: return 'error: '.$reply;
9098: }
9099: # Add student role to user
9100: my $uurl='/'.$cid;
9101: $uurl=~s/\_/\//g;
9102: if ($usec) {
9103: $uurl.='/'.$usec;
9104: }
9105: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9106: $selfenroll,$context);
9107: if ($result ne 'ok') {
9108: if ($old_entry{$user} ne '') {
9109: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9110: } else {
9111: $reply = &del('classlist',[$user],$cdom,$cnum);
9112: }
9113: }
9114: return $result;
9115: }
9116:
9117: sub format_name {
9118: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9119: my $name;
9120: if ($first ne 'lastname') {
9121: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9122: } else {
9123: if ($lastname=~/\S/) {
9124: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9125: $name=~s/\s+,/,/;
9126: } else {
9127: $name.= $firstname.' '.$middlename.' '.$generation;
9128: }
9129: }
9130: $name=~s/^\s+//;
9131: $name=~s/\s+$//;
9132: $name=~s/\s+/ /g;
9133: return $name;
9134: }
9135:
9136: # ------------------------------------------------- Write to course preferences
9137:
9138: sub writecoursepref {
9139: my ($courseid,%prefs)=@_;
9140: $courseid=~s/^\///;
9141: $courseid=~s/\_/\//g;
9142: my ($cdomain,$cnum)=split(/\//,$courseid);
9143: my $chome=homeserver($cnum,$cdomain);
9144: if (($chome eq '') || ($chome eq 'no_host')) {
9145: return 'error: no such course';
9146: }
9147: my $cstring='';
9148: foreach my $pref (keys(%prefs)) {
9149: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9150: }
9151: $cstring=~s/\&$//;
9152: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9153: }
9154:
9155: # ---------------------------------------------------------- Make/modify course
9156:
9157: sub createcourse {
9158: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9159: $course_owner,$crstype,$cnum,$context,$category)=@_;
9160: $url=&declutter($url);
9161: my $cid='';
9162: if ($context eq 'requestcourses') {
9163: my $can_create = 0;
9164: my ($ownername,$ownerdom) = split(':',$course_owner);
9165: if ($udom eq $ownerdom) {
9166: if (&usertools_access($ownername,$ownerdom,$category,undef,
9167: $context)) {
9168: $can_create = 1;
9169: }
9170: } else {
9171: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9172: $category);
9173: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9174: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9175: if (@curr > 0) {
9176: my @options = qw(approval validate autolimit);
9177: my $optregex = join('|',@options);
9178: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9179: $can_create = 1;
9180: }
9181: }
9182: }
9183: }
9184: if ($can_create) {
9185: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9186: unless (&allowed('ccc',$udom)) {
9187: return 'refused';
9188: }
9189: }
9190: } else {
9191: return 'refused';
9192: }
9193: } elsif (!&allowed('ccc',$udom)) {
9194: return 'refused';
9195: }
9196: # --------------------------------------------------------------- Get Unique ID
9197: my $uname;
9198: if ($cnum =~ /^$match_courseid$/) {
9199: my $chome=&homeserver($cnum,$udom,'true');
9200: if (($chome eq '') || ($chome eq 'no_host')) {
9201: $uname = $cnum;
9202: } else {
9203: $uname = &generate_coursenum($udom,$crstype);
9204: }
9205: } else {
9206: $uname = &generate_coursenum($udom,$crstype);
9207: }
9208: return $uname if ($uname =~ /^error/);
9209: # -------------------------------------------------- Check supplied server name
9210: if (!defined($course_server)) {
9211: if (defined(&domain($udom,'primary'))) {
9212: $course_server = &domain($udom,'primary');
9213: } else {
9214: $course_server = $env{'user.home'};
9215: }
9216: }
9217: my %host_servers =
9218: &Apache::lonnet::get_servers($udom,'library');
9219: unless ($host_servers{$course_server}) {
9220: return 'error: invalid home server for course: '.$course_server;
9221: }
9222: # ------------------------------------------------------------- Make the course
9223: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9224: $course_server);
9225: unless ($reply eq 'ok') { return 'error: '.$reply; }
9226: my $uhome=&homeserver($uname,$udom,'true');
9227: if (($uhome eq '') || ($uhome eq 'no_host')) {
9228: return 'error: no such course';
9229: }
9230: # ----------------------------------------------------------------- Course made
9231: # log existence
9232: my $now = time;
9233: my $newcourse = {
9234: $udom.'_'.$uname => {
9235: description => $description,
9236: inst_code => $inst_code,
9237: owner => $course_owner,
9238: type => $crstype,
9239: creator => $env{'user.name'}.':'.
9240: $env{'user.domain'},
9241: created => $now,
9242: context => $context,
9243: },
9244: };
9245: &courseidput($udom,$newcourse,$uhome,'notime');
9246: # set toplevel url
9247: my $topurl=$url;
9248: unless ($nonstandard) {
9249: # ------------------------------------------ For standard courses, make top url
9250: my $mapurl=&clutter($url);
9251: if ($mapurl eq '/res/') { $mapurl=''; }
9252: $env{'form.initmap'}=(<<ENDINITMAP);
9253: <map>
9254: <resource id="1" type="start"></resource>
9255: <resource id="2" src="$mapurl"></resource>
9256: <resource id="3" type="finish"></resource>
9257: <link index="1" from="1" to="2"></link>
9258: <link index="2" from="2" to="3"></link>
9259: </map>
9260: ENDINITMAP
9261: $topurl=&declutter(
9262: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
9263: );
9264: }
9265: # ----------------------------------------------------------- Write preferences
9266: &writecoursepref($udom.'_'.$uname,
9267: ('description' => $description,
9268: 'url' => $topurl,
9269: 'internal.creator' => $env{'user.name'}.':'.
9270: $env{'user.domain'},
9271: 'internal.created' => $now,
9272: 'internal.creationcontext' => $context)
9273: );
9274: return '/'.$udom.'/'.$uname;
9275: }
9276:
9277: # ------------------------------------------------------------------- Create ID
9278: sub generate_coursenum {
9279: my ($udom,$crstype) = @_;
9280: my $domdesc = &domain($udom);
9281: return 'error: invalid domain' if ($domdesc eq '');
9282: my $first;
9283: if ($crstype eq 'Community') {
9284: $first = '0';
9285: } else {
9286: $first = int(1+rand(9));
9287: }
9288: my $uname=$first.
9289: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9290: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9291: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9292: # ----------------------------------------------- Make sure that does not exist
9293: my $uhome=&homeserver($uname,$udom,'true');
9294: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9295: if ($crstype eq 'Community') {
9296: $first = '0';
9297: } else {
9298: $first = int(1+rand(9));
9299: }
9300: $uname=$first.
9301: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9302: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9303: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9304: $uhome=&homeserver($uname,$udom,'true');
9305: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9306: return 'error: unable to generate unique course-ID';
9307: }
9308: }
9309: return $uname;
9310: }
9311:
9312: sub is_course {
9313: my ($cdom, $cnum) = scalar(@_) == 1 ?
9314: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9315:
9316: return unless $cdom and $cnum;
9317:
9318: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9319: '.');
9320:
9321: return unless(exists($courses{$cdom.'_'.$cnum}));
9322: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9323: }
9324:
9325: sub store_userdata {
9326: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9327: my $result;
9328: if ($datakey ne '') {
9329: if (ref($storehash) eq 'HASH') {
9330: if ($udom eq '' || $uname eq '') {
9331: $udom = $env{'user.domain'};
9332: $uname = $env{'user.name'};
9333: }
9334: my $uhome=&homeserver($uname,$udom);
9335: if (($uhome eq '') || ($uhome eq 'no_host')) {
9336: $result = 'error: no_host';
9337: } else {
9338: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
9339: $storehash->{'host'} = $perlvar{'lonHostID'};
9340:
9341: my $namevalue='';
9342: foreach my $key (keys(%{$storehash})) {
9343: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
9344: }
9345: $namevalue=~s/\&$//;
9346: unless ($namespace eq 'courserequests') {
9347: $datakey = &escape($datakey);
9348: }
9349: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
9350: $namevalue,$uhome);
9351: }
9352: } else {
9353: $result = 'error: data to store was not a hash reference';
9354: }
9355: } else {
9356: $result= 'error: invalid requestkey';
9357: }
9358: return $result;
9359: }
9360:
9361: # ---------------------------------------------------------- Assign Custom Role
9362:
9363: sub assigncustomrole {
9364: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9365: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9366: $end,$start,$deleteflag,$selfenroll,$context);
9367: }
9368:
9369: # ----------------------------------------------------------------- Revoke Role
9370:
9371: sub revokerole {
9372: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9373: my $now=time;
9374: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9375: }
9376:
9377: # ---------------------------------------------------------- Revoke Custom Role
9378:
9379: sub revokecustomrole {
9380: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9381: my $now=time;
9382: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9383: $deleteflag,$selfenroll,$context);
9384: }
9385:
9386: # ------------------------------------------------------------ Disk usage
9387: sub diskusage {
9388: my ($udom,$uname,$directorypath,$getpropath)=@_;
9389: $directorypath =~ s/\/$//;
9390: my $listing=&reply('du2:'.&escape($directorypath).':'
9391: .&escape($getpropath).':'.&escape($uname).':'
9392: .&escape($udom),homeserver($uname,$udom));
9393: if ($listing eq 'unknown_cmd') {
9394: if ($getpropath) {
9395: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9396: }
9397: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9398: }
9399: return $listing;
9400: }
9401:
9402: sub is_locked {
9403: my ($file_name, $domain, $user, $which) = @_;
9404: my @check;
9405: my $is_locked;
9406: push (@check,$file_name);
9407: my %locked = &get('file_permissions',\@check,
9408: $env{'user.domain'},$env{'user.name'});
9409: my ($tmp)=keys(%locked);
9410: if ($tmp=~/^error:/) { undef(%locked); }
9411:
9412: if (ref($locked{$file_name}) eq 'ARRAY') {
9413: $is_locked = 'false';
9414: foreach my $entry (@{$locked{$file_name}}) {
9415: if (ref($entry) eq 'ARRAY') {
9416: $is_locked = 'true';
9417: if (ref($which) eq 'ARRAY') {
9418: push(@{$which},$entry);
9419: } else {
9420: last;
9421: }
9422: }
9423: }
9424: } else {
9425: $is_locked = 'false';
9426: }
9427: return $is_locked;
9428: }
9429:
9430: sub declutter_portfile {
9431: my ($file) = @_;
9432: $file =~ s{^(/portfolio/|portfolio/)}{/};
9433: return $file;
9434: }
9435:
9436: # ------------------------------------------------------------- Mark as Read Only
9437:
9438: sub mark_as_readonly {
9439: my ($domain,$user,$files,$what) = @_;
9440: my %current_permissions = &dump('file_permissions',$domain,$user);
9441: my ($tmp)=keys(%current_permissions);
9442: if ($tmp=~/^error:/) { undef(%current_permissions); }
9443: foreach my $file (@{$files}) {
9444: $file = &declutter_portfile($file);
9445: push(@{$current_permissions{$file}},$what);
9446: }
9447: &put('file_permissions',\%current_permissions,$domain,$user);
9448: return;
9449: }
9450:
9451: # ------------------------------------------------------------Save Selected Files
9452:
9453: sub save_selected_files {
9454: my ($user, $path, @files) = @_;
9455: my $filename = $user."savedfiles";
9456: my @other_files = &files_not_in_path($user, $path);
9457: open (OUT, '>'.$tmpdir.$filename);
9458: foreach my $file (@files) {
9459: print (OUT $env{'form.currentpath'}.$file."\n");
9460: }
9461: foreach my $file (@other_files) {
9462: print (OUT $file."\n");
9463: }
9464: close (OUT);
9465: return 'ok';
9466: }
9467:
9468: sub clear_selected_files {
9469: my ($user) = @_;
9470: my $filename = $user."savedfiles";
9471: open (OUT, '>'.LONCAPA::tempdir().$filename);
9472: print (OUT undef);
9473: close (OUT);
9474: return ("ok");
9475: }
9476:
9477: sub files_in_path {
9478: my ($user, $path) = @_;
9479: my $filename = $user."savedfiles";
9480: my %return_files;
9481: open (IN, '<'.LONCAPA::tempdir().$filename);
9482: while (my $line_in = <IN>) {
9483: chomp ($line_in);
9484: my @paths_and_file = split (m!/!, $line_in);
9485: my $file_part = pop (@paths_and_file);
9486: my $path_part = join ('/', @paths_and_file);
9487: $path_part.='/';
9488: my $path_and_file = $path_part.$file_part;
9489: if ($path_part eq $path) {
9490: $return_files{$file_part}= 'selected';
9491: }
9492: }
9493: close (IN);
9494: return (\%return_files);
9495: }
9496:
9497: # called in portfolio select mode, to show files selected NOT in current directory
9498: sub files_not_in_path {
9499: my ($user, $path) = @_;
9500: my $filename = $user."savedfiles";
9501: my @return_files;
9502: my $path_part;
9503: open(IN, '<'.LONCAPA::.$filename);
9504: while (my $line = <IN>) {
9505: #ok, I know it's clunky, but I want it to work
9506: my @paths_and_file = split(m|/|, $line);
9507: my $file_part = pop(@paths_and_file);
9508: chomp($file_part);
9509: my $path_part = join('/', @paths_and_file);
9510: $path_part .= '/';
9511: my $path_and_file = $path_part.$file_part;
9512: if ($path_part ne $path) {
9513: push(@return_files, ($path_and_file));
9514: }
9515: }
9516: close(OUT);
9517: return (@return_files);
9518: }
9519:
9520: #------------------------------Submitted/Handedback Portfolio Files Versioning
9521:
9522: sub portfiles_versioning {
9523: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
9524: my $portfolio_root = '/userfiles/portfolio';
9525: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
9526: foreach my $file (@{$portfiles}) {
9527: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
9528: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
9529: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
9530: my $getpropath = 1;
9531: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
9532: $stu_name,$getpropath);
9533: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
9534: my $new_answer =
9535: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
9536: if ($new_answer ne 'problem getting file') {
9537: push(@{$versioned_portfiles}, $directory.$new_answer);
9538: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
9539: [$symb,$env{'request.course.id'},'graded']);
9540: }
9541: }
9542: }
9543:
9544: sub get_next_version {
9545: my ($answer_name, $answer_ext, $dir_list) = @_;
9546: my $version;
9547: if (ref($dir_list) eq 'ARRAY') {
9548: foreach my $row (@{$dir_list}) {
9549: my ($file) = split(/\&/,$row,2);
9550: my ($file_name,$file_version,$file_ext) =
9551: &file_name_version_ext($file);
9552: if (($file_name eq $answer_name) &&
9553: ($file_ext eq $answer_ext)) {
9554: # gets here if filename and extension match,
9555: # regardless of version
9556: if ($file_version ne '') {
9557: # a versioned file is found so save it for later
9558: if ($file_version > $version) {
9559: $version = $file_version;
9560: }
9561: }
9562: }
9563: }
9564: }
9565: $version ++;
9566: return($version);
9567: }
9568:
9569: sub version_selected_portfile {
9570: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
9571: my ($answer_name,$answer_ver,$answer_ext) =
9572: &file_name_version_ext($file_name);
9573: my $new_answer;
9574: $env{'form.copy'} =
9575: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
9576: if($env{'form.copy'} eq '-1') {
9577: $new_answer = 'problem getting file';
9578: } else {
9579: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
9580: my $copy_result =
9581: &finishuserfileupload($stu_name,$domain,'copy',
9582: '/portfolio'.$directory.$new_answer);
9583: }
9584: undef($env{'form.copy'});
9585: return ($new_answer);
9586: }
9587:
9588: sub file_name_version_ext {
9589: my ($file)=@_;
9590: my @file_parts = split(/\./, $file);
9591: my ($name,$version,$ext);
9592: if (@file_parts > 1) {
9593: $ext=pop(@file_parts);
9594: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
9595: $version=pop(@file_parts);
9596: }
9597: $name=join('.',@file_parts);
9598: } else {
9599: $name=join('.',@file_parts);
9600: }
9601: return($name,$version,$ext);
9602: }
9603:
9604: #----------------------------------------------Get portfolio file permissions
9605:
9606: sub get_portfile_permissions {
9607: my ($domain,$user) = @_;
9608: my %current_permissions = &dump('file_permissions',$domain,$user);
9609: my ($tmp)=keys(%current_permissions);
9610: if ($tmp=~/^error:/) { undef(%current_permissions); }
9611: return \%current_permissions;
9612: }
9613:
9614: #---------------------------------------------Get portfolio file access controls
9615:
9616: sub get_access_controls {
9617: my ($current_permissions,$group,$file) = @_;
9618: my %access;
9619: my $real_file = $file;
9620: $file =~ s/\.meta$//;
9621: if (defined($file)) {
9622: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9623: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9624: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9625: }
9626: }
9627: } else {
9628: foreach my $key (keys(%{$current_permissions})) {
9629: if ($key =~ /\0accesscontrol$/) {
9630: if (defined($group)) {
9631: if ($key !~ m-^\Q$group\E/-) {
9632: next;
9633: }
9634: }
9635: my ($fullpath) = split(/\0/,$key);
9636: if (ref($$current_permissions{$key}) eq 'HASH') {
9637: foreach my $control (keys(%{$$current_permissions{$key}})) {
9638: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9639: }
9640: }
9641: }
9642: }
9643: }
9644: return %access;
9645: }
9646:
9647: sub modify_access_controls {
9648: my ($file_name,$changes,$domain,$user)=@_;
9649: my ($outcome,$deloutcome);
9650: my %store_permissions;
9651: my %new_values;
9652: my %new_control;
9653: my %translation;
9654: my @deletions = ();
9655: my $now = time;
9656: if (exists($$changes{'activate'})) {
9657: if (ref($$changes{'activate'}) eq 'HASH') {
9658: my @newitems = sort(keys(%{$$changes{'activate'}}));
9659: my $numnew = scalar(@newitems);
9660: for (my $i=0; $i<$numnew; $i++) {
9661: my $newkey = $newitems[$i];
9662: my $newid = &Apache::loncommon::get_cgi_id();
9663: if ($newkey =~ /^\d+:/) {
9664: $newkey =~ s/^(\d+)/$newid/;
9665: $translation{$1} = $newid;
9666: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9667: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9668: $translation{$1} = $newid;
9669: }
9670: $new_values{$file_name."\0".$newkey} =
9671: $$changes{'activate'}{$newitems[$i]};
9672: $new_control{$newkey} = $now;
9673: }
9674: }
9675: }
9676: my %todelete;
9677: my %changed_items;
9678: foreach my $action ('delete','update') {
9679: if (exists($$changes{$action})) {
9680: if (ref($$changes{$action}) eq 'HASH') {
9681: foreach my $key (keys(%{$$changes{$action}})) {
9682: my ($itemnum) = ($key =~ /^([^:]+):/);
9683: if ($action eq 'delete') {
9684: $todelete{$itemnum} = 1;
9685: } else {
9686: $changed_items{$itemnum} = $key;
9687: }
9688: }
9689: }
9690: }
9691: }
9692: # get lock on access controls for file.
9693: my $lockhash = {
9694: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9695: ':'.$env{'user.domain'},
9696: };
9697: my $tries = 0;
9698: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9699:
9700: while (($gotlock ne 'ok') && $tries < 10) {
9701: $tries ++;
9702: sleep(0.1);
9703: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9704: }
9705: if ($gotlock eq 'ok') {
9706: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9707: my ($tmp)=keys(%curr_permissions);
9708: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9709: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9710: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9711: if (ref($curr_controls) eq 'HASH') {
9712: foreach my $control_item (keys(%{$curr_controls})) {
9713: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9714: if (defined($todelete{$itemnum})) {
9715: push(@deletions,$file_name."\0".$control_item);
9716: } else {
9717: if (defined($changed_items{$itemnum})) {
9718: $new_control{$changed_items{$itemnum}} = $now;
9719: push(@deletions,$file_name."\0".$control_item);
9720: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9721: } else {
9722: $new_control{$control_item} = $$curr_controls{$control_item};
9723: }
9724: }
9725: }
9726: }
9727: }
9728: my ($group);
9729: if (&is_course($domain,$user)) {
9730: ($group,my $file) = split(/\//,$file_name,2);
9731: }
9732: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9733: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9734: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9735: # remove lock
9736: my @del_lock = ($file_name."\0".'locked_access_records');
9737: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9738: my $sqlresult =
9739: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9740: $group);
9741: } else {
9742: $outcome = "error: could not obtain lockfile\n";
9743: }
9744: return ($outcome,$deloutcome,\%new_values,\%translation);
9745: }
9746:
9747: sub make_public_indefinitely {
9748: my (@requrl) = @_;
9749: return &automated_portfile_access('public',\@requrl);
9750: }
9751:
9752: sub automated_portfile_access {
9753: my ($accesstype,$addsref,$delsref,$info) = @_;
9754: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
9755: return 'invalid';
9756: }
9757: my %urls;
9758: if (ref($addsref) eq 'ARRAY') {
9759: foreach my $requrl (@{$addsref}) {
9760: if (&is_portfolio_url($requrl)) {
9761: unless (exists($urls{$requrl})) {
9762: $urls{$requrl} = 'add';
9763: }
9764: }
9765: }
9766: }
9767: if (ref($delsref) eq 'ARRAY') {
9768: foreach my $requrl (@{$delsref}) {
9769: if (&is_portfolio_url($requrl)) {
9770: unless (exists($urls{$requrl})) {
9771: $urls{$requrl} = 'delete';
9772: }
9773: }
9774: }
9775: }
9776: unless (keys(%urls)) {
9777: return 'invalid';
9778: }
9779: my $ip;
9780: if ($accesstype eq 'ip') {
9781: if (ref($info) eq 'HASH') {
9782: if ($info->{'ip'} ne '') {
9783: $ip = $info->{'ip'};
9784: }
9785: }
9786: if ($ip eq '') {
9787: return 'invalid';
9788: }
9789: }
9790: my $errors;
9791: my $now = time;
9792: my %current_perms;
9793: foreach my $requrl (sort(keys(%urls))) {
9794: my $action;
9795: if ($urls{$requrl} eq 'add') {
9796: $action = 'activate';
9797: } else {
9798: $action = 'none';
9799: }
9800: my $aclnum = 0;
9801: my (undef,$udom,$unum,$file_name,$group) =
9802: &parse_portfolio_url($requrl);
9803: unless (exists($current_perms{$unum.':'.$udom})) {
9804: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
9805: }
9806: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
9807: $group,$file_name);
9808: foreach my $key (keys(%{$access_controls{$file_name}})) {
9809: my ($num,$scope,$end,$start) =
9810: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9811: if ($scope eq $accesstype) {
9812: if (($start <= $now) && ($end == 0)) {
9813: if ($accesstype eq 'ip') {
9814: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
9815: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
9816: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
9817: if ($urls{$requrl} eq 'add') {
9818: $action = 'none';
9819: last;
9820: } else {
9821: $action = 'delete';
9822: $aclnum = $num;
9823: last;
9824: }
9825: }
9826: }
9827: }
9828: } elsif ($accesstype eq 'public') {
9829: if ($urls{$requrl} eq 'add') {
9830: $action = 'none';
9831: last;
9832: } else {
9833: $action = 'delete';
9834: $aclnum = $num;
9835: last;
9836: }
9837: }
9838: } elsif ($accesstype eq 'public') {
9839: $action = 'update';
9840: $aclnum = $num;
9841: last;
9842: }
9843: }
9844: }
9845: if ($action eq 'none') {
9846: next;
9847: } else {
9848: my %changes;
9849: my $newend = 0;
9850: my $newstart = $now;
9851: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
9852: $changes{$action}{$newkey} = {
9853: type => $accesstype,
9854: time => {
9855: start => $newstart,
9856: end => $newend,
9857: },
9858: };
9859: if ($accesstype eq 'ip') {
9860: $changes{$action}{$newkey}{'ip'} = [$ip];
9861: }
9862: my ($outcome,$deloutcome,$new_values,$translation) =
9863: &modify_access_controls($file_name,\%changes,$udom,$unum);
9864: unless ($outcome eq 'ok') {
9865: $errors .= $outcome.' ';
9866: }
9867: }
9868: }
9869: if ($errors) {
9870: $errors =~ s/\s$//;
9871: return $errors;
9872: } else {
9873: return 'ok';
9874: }
9875: }
9876:
9877: #------------------------------------------------------Get Marked as Read Only
9878:
9879: sub get_marked_as_readonly {
9880: my ($domain,$user,$what,$group) = @_;
9881: my $current_permissions = &get_portfile_permissions($domain,$user);
9882: my @readonly_files;
9883: my $cmp1=$what;
9884: if (ref($what)) { $cmp1=join('',@{$what}) };
9885: while (my ($file_name,$value) = each(%{$current_permissions})) {
9886: if (defined($group)) {
9887: if ($file_name !~ m-^\Q$group\E/-) {
9888: next;
9889: }
9890: }
9891: if (ref($value) eq "ARRAY"){
9892: foreach my $stored_what (@{$value}) {
9893: my $cmp2=$stored_what;
9894: if (ref($stored_what) eq 'ARRAY') {
9895: $cmp2=join('',@{$stored_what});
9896: }
9897: if ($cmp1 eq $cmp2) {
9898: push(@readonly_files, $file_name);
9899: last;
9900: } elsif (!defined($what)) {
9901: push(@readonly_files, $file_name);
9902: last;
9903: }
9904: }
9905: }
9906: }
9907: return @readonly_files;
9908: }
9909: #-----------------------------------------------------------Get Marked as Read Only Hash
9910:
9911: sub get_marked_as_readonly_hash {
9912: my ($current_permissions,$group,$what) = @_;
9913: my %readonly_files;
9914: while (my ($file_name,$value) = each(%{$current_permissions})) {
9915: if (defined($group)) {
9916: if ($file_name !~ m-^\Q$group\E/-) {
9917: next;
9918: }
9919: }
9920: if (ref($value) eq "ARRAY"){
9921: foreach my $stored_what (@{$value}) {
9922: if (ref($stored_what) eq 'ARRAY') {
9923: foreach my $lock_descriptor(@{$stored_what}) {
9924: if ($lock_descriptor eq 'graded') {
9925: $readonly_files{$file_name} = 'graded';
9926: } elsif ($lock_descriptor eq 'handback') {
9927: $readonly_files{$file_name} = 'handback';
9928: } else {
9929: if (!exists($readonly_files{$file_name})) {
9930: $readonly_files{$file_name} = 'locked';
9931: }
9932: }
9933: }
9934: }
9935: }
9936: }
9937: }
9938: return %readonly_files;
9939: }
9940: # ------------------------------------------------------------ Unmark as Read Only
9941:
9942: sub unmark_as_readonly {
9943: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9944: # for portfolio submissions, $what contains [$symb,$crsid]
9945: my ($domain,$user,$what,$file_name,$group) = @_;
9946: $file_name = &declutter_portfile($file_name);
9947: my $symb_crs = $what;
9948: if (ref($what)) { $symb_crs=join('',@$what); }
9949: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9950: my ($tmp)=keys(%current_permissions);
9951: if ($tmp=~/^error:/) { undef(%current_permissions); }
9952: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9953: foreach my $file (@readonly_files) {
9954: my $clean_file = &declutter_portfile($file);
9955: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9956: my $current_locks = $current_permissions{$file};
9957: my @new_locks;
9958: my @del_keys;
9959: if (ref($current_locks) eq "ARRAY"){
9960: foreach my $locker (@{$current_locks}) {
9961: my $compare=$locker;
9962: if (ref($locker) eq 'ARRAY') {
9963: $compare=join('',@{$locker});
9964: if ($compare ne $symb_crs) {
9965: push(@new_locks, $locker);
9966: }
9967: }
9968: }
9969: if (scalar(@new_locks) > 0) {
9970: $current_permissions{$file} = \@new_locks;
9971: } else {
9972: push(@del_keys, $file);
9973: &del('file_permissions',\@del_keys, $domain, $user);
9974: delete($current_permissions{$file});
9975: }
9976: }
9977: }
9978: &put('file_permissions',\%current_permissions,$domain,$user);
9979: return;
9980: }
9981:
9982: # ------------------------------------------------------------ Directory lister
9983:
9984: sub dirlist {
9985: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9986: $uri=~s/^\///;
9987: $uri=~s/\/$//;
9988: my ($udom, $uname);
9989: if ($getuserdir) {
9990: $udom = $userdomain;
9991: $uname = $username;
9992: } else {
9993: (undef,$udom,$uname)=split(/\//,$uri);
9994: if(defined($userdomain)) {
9995: $udom = $userdomain;
9996: }
9997: if(defined($username)) {
9998: $uname = $username;
9999: }
10000: }
10001: my ($dirRoot,$listing,@listing_results);
10002:
10003: $dirRoot = $perlvar{'lonDocRoot'};
10004: if (defined($getpropath)) {
10005: $dirRoot = &propath($udom,$uname);
10006: $dirRoot =~ s/\/$//;
10007: } elsif (defined($getuserdir)) {
10008: my $subdir=$uname.'__';
10009: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10010: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10011: ."/$udom/$subdir/$uname";
10012: } elsif (defined($alternateRoot)) {
10013: $dirRoot = $alternateRoot;
10014: }
10015:
10016: if($udom) {
10017: if($uname) {
10018: my $uhome = &homeserver($uname,$udom);
10019: if ($uhome eq 'no_host') {
10020: return ([],'no_host');
10021: }
10022: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10023: .$getuserdir.':'.&escape($dirRoot)
10024: .':'.&escape($uname).':'.&escape($udom),$uhome);
10025: if ($listing eq 'unknown_cmd') {
10026: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10027: } else {
10028: @listing_results = map { &unescape($_); } split(/:/,$listing);
10029: }
10030: if ($listing eq 'unknown_cmd') {
10031: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10032: @listing_results = split(/:/,$listing);
10033: } else {
10034: @listing_results = map { &unescape($_); } split(/:/,$listing);
10035: }
10036: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10037: ($listing eq 'rejected') || ($listing eq 'refused') ||
10038: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10039: return ([],$listing);
10040: } else {
10041: return (\@listing_results);
10042: }
10043: } elsif(!$alternateRoot) {
10044: my (%allusers,%listerror);
10045: my %servers = &get_servers($udom,'library');
10046: foreach my $tryserver (keys(%servers)) {
10047: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10048: &escape($udom),$tryserver);
10049: if ($listing eq 'unknown_cmd') {
10050: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10051: $udom, $tryserver);
10052: } else {
10053: @listing_results = map { &unescape($_); } split(/:/,$listing);
10054: }
10055: if ($listing eq 'unknown_cmd') {
10056: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10057: $udom, $tryserver);
10058: @listing_results = split(/:/,$listing);
10059: } else {
10060: @listing_results =
10061: map { &unescape($_); } split(/:/,$listing);
10062: }
10063: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10064: ($listing eq 'rejected') || ($listing eq 'refused') ||
10065: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10066: $listerror{$tryserver} = $listing;
10067: } else {
10068: foreach my $line (@listing_results) {
10069: my ($entry) = split(/&/,$line,2);
10070: $allusers{$entry} = 1;
10071: }
10072: }
10073: }
10074: my @alluserslist=();
10075: foreach my $user (sort(keys(%allusers))) {
10076: push(@alluserslist,$user.'&user');
10077: }
10078: return (\@alluserslist);
10079: } else {
10080: return ([],'missing username');
10081: }
10082: } elsif(!defined($getpropath)) {
10083: my $path = $perlvar{'lonDocRoot'}.'/res/';
10084: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10085: return (\@all_domains);
10086: } else {
10087: return ([],'missing domain');
10088: }
10089: }
10090:
10091: # --------------------------------------------- GetFileTimestamp
10092: # This function utilizes dirlist and returns the date stamp for
10093: # when it was last modified. It will also return an error of -1
10094: # if an error occurs
10095:
10096: sub GetFileTimestamp {
10097: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10098: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10099: $studentName = &LONCAPA::clean_username($studentName);
10100: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10101: undef,$getuserdir);
10102: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10103: return -1;
10104: }
10105: if (ref($fileref) eq 'ARRAY') {
10106: my @stats = split('&',$fileref->[0]);
10107: # @stats contains first the filename, then the stat output
10108: return $stats[10]; # so this is 10 instead of 9.
10109: } else {
10110: return -1;
10111: }
10112: }
10113:
10114: sub stat_file {
10115: my ($uri) = @_;
10116: $uri = &clutter_with_no_wrapper($uri);
10117:
10118: my ($udom,$uname,$file);
10119: if ($uri =~ m-^/(uploaded|editupload)/-) {
10120: ($udom,$uname,$file) =
10121: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10122: $file = 'userfiles/'.$file;
10123: }
10124: if ($uri =~ m-^/res/-) {
10125: ($udom,$uname) =
10126: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10127: $file = $uri;
10128: }
10129:
10130: if (!$udom || !$uname || !$file) {
10131: # unable to handle the uri
10132: return ();
10133: }
10134: my $getpropath;
10135: if ($file =~ /^userfiles\//) {
10136: $getpropath = 1;
10137: }
10138: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10139: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10140: return ();
10141: } else {
10142: if (ref($listref) eq 'ARRAY') {
10143: my @stats = split('&',$listref->[0]);
10144: shift(@stats); #filename is first
10145: return @stats;
10146: }
10147: }
10148: return ();
10149: }
10150:
10151: # -------------------------------------------------------- Value of a Condition
10152:
10153: # gets the value of a specific preevaluated condition
10154: # stored in the string $env{user.state.<cid>}
10155: # or looks up a condition reference in the bighash and if if hasn't
10156: # already been evaluated recurses into docondval to get the value of
10157: # the condition, then memoizing it to
10158: # $env{user.state.<cid>.<condition>}
10159: sub directcondval {
10160: my $number=shift;
10161: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
10162: &Apache::lonuserstate::evalstate();
10163: }
10164: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
10165: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
10166: } elsif ($number =~ /^_/) {
10167: my $sub_condition;
10168: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10169: &GDBM_READER(),0640)) {
10170: $sub_condition=$bighash{'conditions'.$number};
10171: untie(%bighash);
10172: }
10173: my $value = &docondval($sub_condition);
10174: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
10175: return $value;
10176: }
10177: if ($env{'user.state.'.$env{'request.course.id'}}) {
10178: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
10179: } else {
10180: return 2;
10181: }
10182: }
10183:
10184: # get the collection of conditions for this resource
10185: sub condval {
10186: my $condidx=shift;
10187: my $allpathcond='';
10188: foreach my $cond (split(/\|/,$condidx)) {
10189: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
10190: $allpathcond.=
10191: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
10192: }
10193: }
10194: $allpathcond=~s/\|$//;
10195: return &docondval($allpathcond);
10196: }
10197:
10198: #evaluates an expression of conditions
10199: sub docondval {
10200: my ($allpathcond) = @_;
10201: my $result=0;
10202: if ($env{'request.course.id'}
10203: && defined($allpathcond)) {
10204: my $operand='|';
10205: my @stack;
10206: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
10207: if ($chunk eq '(') {
10208: push @stack,($operand,$result);
10209: } elsif ($chunk eq ')') {
10210: my $before=pop @stack;
10211: if (pop @stack eq '&') {
10212: $result=$result>$before?$before:$result;
10213: } else {
10214: $result=$result>$before?$result:$before;
10215: }
10216: } elsif (($chunk eq '&') || ($chunk eq '|')) {
10217: $operand=$chunk;
10218: } else {
10219: my $new=directcondval($chunk);
10220: if ($operand eq '&') {
10221: $result=$result>$new?$new:$result;
10222: } else {
10223: $result=$result>$new?$result:$new;
10224: }
10225: }
10226: }
10227: }
10228: return $result;
10229: }
10230:
10231: # ---------------------------------------------------- Devalidate courseresdata
10232:
10233: sub devalidatecourseresdata {
10234: my ($coursenum,$coursedomain)=@_;
10235: my $hashid=$coursenum.':'.$coursedomain;
10236: &devalidate_cache_new('courseres',$hashid);
10237: }
10238:
10239:
10240: # --------------------------------------------------- Course Resourcedata Query
10241: #
10242: # Parameters:
10243: # $coursenum - Number of the course.
10244: # $coursedomain - Domain at which the course was created.
10245: # Returns:
10246: # A hash of the course parameters along (I think) with timestamps
10247: # and version info.
10248:
10249: sub get_courseresdata {
10250: my ($coursenum,$coursedomain)=@_;
10251: my $coursehom=&homeserver($coursenum,$coursedomain);
10252: my $hashid=$coursenum.':'.$coursedomain;
10253: my ($result,$cached)=&is_cached_new('courseres',$hashid);
10254: my %dumpreply;
10255: unless (defined($cached)) {
10256: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
10257: $result=\%dumpreply;
10258: my ($tmp) = keys(%dumpreply);
10259: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10260: &do_cache_new('courseres',$hashid,$result,600);
10261: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
10262: return $tmp;
10263: } elsif ($tmp =~ /^(error)/) {
10264: $result=undef;
10265: &do_cache_new('courseres',$hashid,$result,600);
10266: }
10267: }
10268: return $result;
10269: }
10270:
10271: sub devalidateuserresdata {
10272: my ($uname,$udom)=@_;
10273: my $hashid="$udom:$uname";
10274: &devalidate_cache_new('userres',$hashid);
10275: }
10276:
10277: sub get_userresdata {
10278: my ($uname,$udom)=@_;
10279: #most student don\'t have any data set, check if there is some data
10280: if (&EXT_cache_status($udom,$uname)) { return undef; }
10281:
10282: my $hashid="$udom:$uname";
10283: my ($result,$cached)=&is_cached_new('userres',$hashid);
10284: if (!defined($cached)) {
10285: my %resourcedata=&dump('resourcedata',$udom,$uname);
10286: $result=\%resourcedata;
10287: &do_cache_new('userres',$hashid,$result,600);
10288: }
10289: my ($tmp)=keys(%$result);
10290: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
10291: return $result;
10292: }
10293: #error 2 occurs when the .db doesn't exist
10294: if ($tmp!~/error: 2 /) {
10295: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
10296: &logthis("<font color=\"blue\">WARNING:".
10297: " Trying to get resource data for ".
10298: $uname." at ".$udom.": ".
10299: $tmp."</font>");
10300: }
10301: } elsif ($tmp=~/error: 2 /) {
10302: #&EXT_cache_set($udom,$uname);
10303: &do_cache_new('userres',$hashid,undef,600);
10304: undef($tmp); # not really an error so don't send it back
10305: }
10306: return $tmp;
10307: }
10308: #----------------------------------------------- resdata - return resource data
10309: # Purpose:
10310: # Return resource data for either users or for a course.
10311: # Parameters:
10312: # $name - Course/user name.
10313: # $domain - Name of the domain the user/course is registered on.
10314: # $type - Type of thing $name is (must be 'course' or 'user'
10315: # $mapp - decluttered URL of enclosing map
10316: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
10317: # $recurseup - Ref to array of map URLs, starting with map containing
10318: # $mapp up through hierarchy of nested maps to top level map.
10319: # $courseid - CourseID (first part of param identifier).
10320: # $modifier - Middle part of param identifier.
10321: # $what - Last part of param identifier.
10322: # @which - Array of names of resources desired.
10323: # Returns:
10324: # The value of the first reasource in @which that is found in the
10325: # resource hash.
10326: # Exceptional Conditions:
10327: # If the $type passed in is not valid (not the string 'course' or
10328: # 'user', an undefined reference is returned.
10329: # If none of the resources are found, an undef is returned
10330: sub resdata {
10331: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
10332: $modifier,$what,@which)=@_;
10333: my $result;
10334: if ($type eq 'course') {
10335: $result=&get_courseresdata($name,$domain);
10336: } elsif ($type eq 'user') {
10337: $result=&get_userresdata($name,$domain);
10338: }
10339: if (!ref($result)) { return $result; }
10340: foreach my $item (@which) {
10341: if ($item->[1] eq 'course') {
10342: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
10343: unless ($$recursed) {
10344: @{$recurseup} = &get_map_hierarchy($mapp);
10345: $$recursed = 1;
10346: }
10347: foreach my $item (@${recurseup}) {
10348: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
10349: last if (defined($result->{$norecursechk}));
10350: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
10351: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
10352: }
10353: }
10354: }
10355: if (defined($result->{$item->[0]})) {
10356: return [$result->{$item->[0]},$item->[1]];
10357: }
10358: }
10359: return undef;
10360: }
10361:
10362: sub get_domain_ltitools {
10363: my ($cdom) = @_;
10364: my %ltitools;
10365: my ($result,$cached)=&is_cached_new('ltitools',$cdom);
10366: if (defined($cached)) {
10367: if (ref($result) eq 'HASH') {
10368: %ltitools = %{$result};
10369: }
10370: } else {
10371: my %domconfig = &get_dom('configuration',['ltitools'],$cdom);
10372: if (ref($domconfig{'ltitools'}) eq 'HASH') {
10373: %ltitools = %{$domconfig{'ltitools'}};
10374: }
10375: my $cachetime = 24*60*60;
10376: &do_cache_new('ltitools',$cdom,\%ltitools,$cachetime);
10377: }
10378: return %ltitools;
10379: }
10380:
10381: sub get_numsuppfiles {
10382: my ($cnum,$cdom,$ignorecache)=@_;
10383: my $hashid=$cnum.':'.$cdom;
10384: my ($suppcount,$cached);
10385: unless ($ignorecache) {
10386: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
10387: }
10388: unless (defined($cached)) {
10389: my $chome=&homeserver($cnum,$cdom);
10390: unless ($chome eq 'no_host') {
10391: ($suppcount,my $errors) = (0,0);
10392: my $suppmap = 'supplemental.sequence';
10393: ($suppcount,$errors) =
10394: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
10395: }
10396: &do_cache_new('suppcount',$hashid,$suppcount,600);
10397: }
10398: return $suppcount;
10399: }
10400:
10401: #
10402: # EXT resource caching routines
10403: #
10404:
10405: sub clear_EXT_cache_status {
10406: &delenv('cache.EXT.');
10407: }
10408:
10409: sub EXT_cache_status {
10410: my ($target_domain,$target_user) = @_;
10411: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10412: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
10413: # We know already the user has no data
10414: return 1;
10415: } else {
10416: return 0;
10417: }
10418: }
10419:
10420: sub EXT_cache_set {
10421: my ($target_domain,$target_user) = @_;
10422: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10423: #&appenv({$cachename => time});
10424: }
10425:
10426: # --------------------------------------------------------- Value of a Variable
10427: sub EXT {
10428:
10429: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
10430: unless ($varname) { return ''; }
10431: #get real user name/domain, courseid and symb
10432: my $courseid;
10433: my $publicuser;
10434: if ($symbparm) {
10435: $symbparm=&get_symb_from_alias($symbparm);
10436: }
10437: if (!($uname && $udom)) {
10438: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
10439: if (!$symbparm) { $symbparm=$cursymb; }
10440: } else {
10441: $courseid=$env{'request.course.id'};
10442: }
10443: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
10444: my $rest;
10445: if (defined($therest[0])) {
10446: $rest=join('.',@therest);
10447: } else {
10448: $rest='';
10449: }
10450:
10451: my $qualifierrest=$qualifier;
10452: if ($rest) { $qualifierrest.='.'.$rest; }
10453: my $spacequalifierrest=$space;
10454: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
10455: if ($realm eq 'user') {
10456: # --------------------------------------------------------------- user.resource
10457: if ($space eq 'resource') {
10458: if ( (defined($Apache::lonhomework::parsing_a_problem)
10459: || defined($Apache::lonhomework::parsing_a_task))
10460: &&
10461: ($symbparm eq &symbread()) ) {
10462: # if we are in the middle of processing the resource the
10463: # get the value we are planning on committing
10464: if (defined($Apache::lonhomework::results{$qualifierrest})) {
10465: return $Apache::lonhomework::results{$qualifierrest};
10466: } else {
10467: return $Apache::lonhomework::history{$qualifierrest};
10468: }
10469: } else {
10470: my %restored;
10471: if ($publicuser || $env{'request.state'} eq 'construct') {
10472: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
10473: } else {
10474: %restored=&restore($symbparm,$courseid,$udom,$uname);
10475: }
10476: return $restored{$qualifierrest};
10477: }
10478: # ----------------------------------------------------------------- user.access
10479: } elsif ($space eq 'access') {
10480: # FIXME - not supporting calls for a specific user
10481: return &allowed($qualifier,$rest);
10482: # ------------------------------------------ user.preferences, user.environment
10483: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
10484: if (($uname eq $env{'user.name'}) &&
10485: ($udom eq $env{'user.domain'})) {
10486: return $env{join('.',('environment',$qualifierrest))};
10487: } else {
10488: my %returnhash;
10489: if (!$publicuser) {
10490: %returnhash=&userenvironment($udom,$uname,
10491: $qualifierrest);
10492: }
10493: return $returnhash{$qualifierrest};
10494: }
10495: # ----------------------------------------------------------------- user.course
10496: } elsif ($space eq 'course') {
10497: # FIXME - not supporting calls for a specific user
10498: return $env{join('.',('request.course',$qualifier))};
10499: # ------------------------------------------------------------------- user.role
10500: } elsif ($space eq 'role') {
10501: # FIXME - not supporting calls for a specific user
10502: my ($role,$where)=split(/\./,$env{'request.role'});
10503: if ($qualifier eq 'value') {
10504: return $role;
10505: } elsif ($qualifier eq 'extent') {
10506: return $where;
10507: }
10508: # ----------------------------------------------------------------- user.domain
10509: } elsif ($space eq 'domain') {
10510: return $udom;
10511: # ------------------------------------------------------------------- user.name
10512: } elsif ($space eq 'name') {
10513: return $uname;
10514: # ---------------------------------------------------- Any other user namespace
10515: } else {
10516: my %reply;
10517: if (!$publicuser) {
10518: %reply=&get($space,[$qualifierrest],$udom,$uname);
10519: }
10520: return $reply{$qualifierrest};
10521: }
10522: } elsif ($realm eq 'query') {
10523: # ---------------------------------------------- pull stuff out of query string
10524: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
10525: [$spacequalifierrest]);
10526: return $env{'form.'.$spacequalifierrest};
10527: } elsif ($realm eq 'request') {
10528: # ------------------------------------------------------------- request.browser
10529: if ($space eq 'browser') {
10530: return $env{'browser.'.$qualifier};
10531: # ------------------------------------------------------------ request.filename
10532: } else {
10533: return $env{'request.'.$spacequalifierrest};
10534: }
10535: } elsif ($realm eq 'course') {
10536: # ---------------------------------------------------------- course.description
10537: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
10538: } elsif ($realm eq 'resource') {
10539:
10540: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
10541: if (!$symbparm) { $symbparm=&symbread(); }
10542: }
10543:
10544: if ($qualifier eq '') {
10545: if ($space eq 'title') {
10546: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
10547: return &gettitle($symbparm);
10548: }
10549:
10550: if ($space eq 'map') {
10551: my ($map) = &decode_symb($symbparm);
10552: return &symbread($map);
10553: }
10554: if ($space eq 'maptitle') {
10555: my ($map) = &decode_symb($symbparm);
10556: return &gettitle($map);
10557: }
10558: if ($space eq 'filename') {
10559: if ($symbparm) {
10560: return &clutter((&decode_symb($symbparm))[2]);
10561: }
10562: return &hreflocation('',$env{'request.filename'});
10563: }
10564:
10565: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
10566: if ($space eq 'visibleparts') {
10567: my $navmap = Apache::lonnavmaps::navmap->new();
10568: my $item;
10569: if (ref($navmap)) {
10570: my $res = $navmap->getBySymb($symbparm);
10571: my $parts = $res->parts();
10572: if (ref($parts) eq 'ARRAY') {
10573: $item = join(',',@{$parts});
10574: }
10575: undef($navmap);
10576: }
10577: return $item;
10578: }
10579: }
10580: }
10581:
10582: my ($section, $group, @groups, @recurseup, $recursed);
10583: my ($courselevelm,$courseleveli,$courselevel,$mapp);
10584: if (($courseid eq '') && ($cid)) {
10585: $courseid = $cid;
10586: }
10587: if (($symbparm && $courseid) &&
10588: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
10589:
10590: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
10591:
10592: # ----------------------------------------------------- Cascading lookup scheme
10593: my $symbp=$symbparm;
10594: $mapp=&deversion((&decode_symb($symbp))[0]);
10595: @recurseup=();
10596: my $symbparm=$symbp.'.'.$spacequalifierrest;
10597: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
10598: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
10599: if (($env{'user.name'} eq $uname) &&
10600: ($env{'user.domain'} eq $udom)) {
10601: $section=$env{'request.course.sec'};
10602: @groups = split(/:/,$env{'request.course.groups'});
10603: @groups=&sort_course_groups($courseid,@groups);
10604: } else {
10605: if (! defined($usection)) {
10606: $section=&getsection($udom,$uname,$courseid);
10607: } else {
10608: $section = $usection;
10609: }
10610: @groups = &get_users_groups($udom,$uname,$courseid);
10611: }
10612:
10613: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
10614: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
10615: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
10616: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
10617:
10618: $courselevel=$courseid.'.'.$spacequalifierrest;
10619: my $courselevelr=$courseid.'.'.$symbparm;
10620: $courseleveli=$courseid.'.'.$recurseparm;
10621: $courselevelm=$courseid.'.'.$mapparm;
10622:
10623: # ----------------------------------------------------------- first, check user
10624:
10625: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
10626: \@recurseup,$courseid,'.',$spacequalifierrest,
10627: ([$courselevelr,'resource'],
10628: [$courselevelm,'map' ],
10629: [$courseleveli,'map' ],
10630: [$courselevel, 'course' ]));
10631: if (defined($userreply)) { return &get_reply($userreply); }
10632:
10633: # ------------------------------------------------ second, check some of course
10634: my $coursereply;
10635: if (@groups > 0) {
10636: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
10637: $recurseparm,$mapparm,$spacequalifierrest,
10638: $mapp,\$recursed,\@recurseup);
10639: if (defined($coursereply)) { return &get_reply($coursereply); }
10640: }
10641:
10642: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10643: $env{'course.'.$courseid.'.domain'},
10644: 'course',$mapp,\$recursed,\@recurseup,
10645: $courseid,'.['.$section.'].',$spacequalifierrest,
10646: ([$seclevelr, 'resource'],
10647: [$seclevelm, 'map' ],
10648: [$secleveli, 'map' ],
10649: [$seclevel, 'course' ],
10650: [$courselevelr,'resource']));
10651: if (defined($coursereply)) { return &get_reply($coursereply); }
10652:
10653: # ------------------------------------------------------ third, check map parms
10654: my %parmhash=();
10655: my $thisparm='';
10656: if (tie(%parmhash,'GDBM_File',
10657: $env{'request.course.fn'}.'_parms.db',
10658: &GDBM_READER(),0640)) {
10659: $thisparm=$parmhash{$symbparm};
10660: untie(%parmhash);
10661: }
10662: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
10663: }
10664: # ------------------------------------------ fourth, look in resource metadata
10665:
10666: my $what = $spacequalifierrest;
10667: $what=~s/\./\_/;
10668: my $filename;
10669: if (!$symbparm) { $symbparm=&symbread(); }
10670: if ($symbparm) {
10671: $filename=(&decode_symb($symbparm))[2];
10672: } else {
10673: $filename=$env{'request.filename'};
10674: }
10675: my $metadata=&metadata($filename,$what);
10676: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10677: $metadata=&metadata($filename,'parameter_'.$what);
10678: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10679:
10680: # ----------------------------------------------- fifth, look in rest of course
10681: if ($symbparm && defined($courseid) &&
10682: $courseid eq $env{'request.course.id'}) {
10683: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10684: $env{'course.'.$courseid.'.domain'},
10685: 'course',$mapp,\$recursed,\@recurseup,
10686: $courseid,'.',$spacequalifierrest,
10687: ([$courselevelm,'map' ],
10688: [$courseleveli,'map' ],
10689: [$courselevel, 'course']));
10690: if (defined($coursereply)) { return &get_reply($coursereply); }
10691: }
10692: # ------------------------------------------------------------------ Cascade up
10693: unless ($space eq '0') {
10694: my @parts=split(/_/,$space);
10695: my $id=pop(@parts);
10696: my $part=join('_',@parts);
10697: if ($part eq '') { $part='0'; }
10698: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
10699: $symbparm,$udom,$uname,$section,1);
10700: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
10701: }
10702: if ($recurse) { return undef; }
10703: my $pack_def=&packages_tab_default($filename,$varname);
10704: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
10705: # ---------------------------------------------------- Any other user namespace
10706: } elsif ($realm eq 'environment') {
10707: # ----------------------------------------------------------------- environment
10708: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
10709: return $env{'environment.'.$spacequalifierrest};
10710: } else {
10711: if ($uname eq 'anonymous' && $udom eq '') {
10712: return '';
10713: }
10714: my %returnhash=&userenvironment($udom,$uname,
10715: $spacequalifierrest);
10716: return $returnhash{$spacequalifierrest};
10717: }
10718: } elsif ($realm eq 'system') {
10719: # ----------------------------------------------------------------- system.time
10720: if ($space eq 'time') {
10721: return time;
10722: }
10723: } elsif ($realm eq 'server') {
10724: # ----------------------------------------------------------------- system.time
10725: if ($space eq 'name') {
10726: return $ENV{'SERVER_NAME'};
10727: }
10728: }
10729: return '';
10730: }
10731:
10732: sub get_reply {
10733: my ($reply_value) = @_;
10734: if (ref($reply_value) eq 'ARRAY') {
10735: if (wantarray) {
10736: return @$reply_value;
10737: }
10738: return $reply_value->[0];
10739: } else {
10740: return $reply_value;
10741: }
10742: }
10743:
10744: sub check_group_parms {
10745: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
10746: $recursed,$recurseupref) = @_;
10747: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
10748: [$what,'course']);
10749: my $coursereply;
10750: foreach my $group (@{$groups}) {
10751: my @groupitems = ();
10752: foreach my $level (@levels) {
10753: my $item = $courseid.'.['.$group.'].'.$level->[0];
10754: push(@groupitems,[$item,$level->[1]]);
10755: }
10756: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10757: $env{'course.'.$courseid.'.domain'},
10758: 'course',$mapp,$recursed,$recurseupref,
10759: $courseid,'.['.$group.'].',$what,
10760: @groupitems);
10761: last if (defined($coursereply));
10762: }
10763: return $coursereply;
10764: }
10765:
10766: sub get_map_hierarchy {
10767: my ($mapname) = @_;
10768: my @recurseup = ();
10769: if ($mapname) {
10770: my $navmap = Apache::lonnavmaps::navmap->new();
10771: if (ref($navmap)) {
10772: @recurseup = $navmap->recurseup_maps($mapname);
10773: undef($navmap);
10774: }
10775: }
10776: return @recurseup;
10777: }
10778:
10779: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10780: my ($courseid,@groups) = @_;
10781: @groups = sort(@groups);
10782: return @groups;
10783: }
10784:
10785: sub packages_tab_default {
10786: my ($uri,$varname)=@_;
10787: my (undef,$part,$name)=split(/\./,$varname);
10788:
10789: my (@extension,@specifics,$do_default);
10790: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10791: my ($pack_type,$pack_part)=split(/_/,$package,2);
10792: if ($pack_type eq 'default') {
10793: $do_default=1;
10794: } elsif ($pack_type eq 'extension') {
10795: push(@extension,[$package,$pack_type,$pack_part]);
10796: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10797: # only look at packages defaults for packages that this id is
10798: push(@specifics,[$package,$pack_type,$pack_part]);
10799: }
10800: }
10801: # first look for a package that matches the requested part id
10802: foreach my $package (@specifics) {
10803: my (undef,$pack_type,$pack_part)=@{$package};
10804: next if ($pack_part ne $part);
10805: if (defined($packagetab{"$pack_type&$name&default"})) {
10806: return $packagetab{"$pack_type&$name&default"};
10807: }
10808: }
10809: # look for any possible matching non extension_ package
10810: foreach my $package (@specifics) {
10811: my (undef,$pack_type,$pack_part)=@{$package};
10812: if (defined($packagetab{"$pack_type&$name&default"})) {
10813: return $packagetab{"$pack_type&$name&default"};
10814: }
10815: if ($pack_type eq 'part') { $pack_part='0'; }
10816: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10817: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10818: }
10819: }
10820: # look for any posible extension_ match
10821: foreach my $package (@extension) {
10822: my ($package,$pack_type)=@{$package};
10823: if (defined($packagetab{"$pack_type&$name&default"})) {
10824: return $packagetab{"$pack_type&$name&default"};
10825: }
10826: if (defined($packagetab{$package."&$name&default"})) {
10827: return $packagetab{$package."&$name&default"};
10828: }
10829: }
10830: # look for a global default setting
10831: if ($do_default && defined($packagetab{"default&$name&default"})) {
10832: return $packagetab{"default&$name&default"};
10833: }
10834: return undef;
10835: }
10836:
10837: sub add_prefix_and_part {
10838: my ($prefix,$part)=@_;
10839: my $keyroot;
10840: if (defined($prefix) && $prefix !~ /^__/) {
10841: # prefix that has a part already
10842: $keyroot=$prefix;
10843: } elsif (defined($prefix)) {
10844: # prefix that is missing a part
10845: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10846: } else {
10847: # no prefix at all
10848: if (defined($part)) { $keyroot='_'.$part; }
10849: }
10850: return $keyroot;
10851: }
10852:
10853: # ---------------------------------------------------------------- Get metadata
10854:
10855: my %metaentry;
10856: my %importedpartids;
10857: sub metadata {
10858: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10859: $uri=&declutter($uri);
10860: # if it is a non metadata possible uri return quickly
10861: if (($uri eq '') ||
10862: (($uri =~ m|^/*adm/|) &&
10863: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|exttools?)$})) ||
10864: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10865: return undef;
10866: }
10867: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
10868: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10869: return undef;
10870: }
10871: my $filename=$uri;
10872: $uri=~s/\.meta$//;
10873: #
10874: # Is the metadata already cached?
10875: # Look at timestamp of caching
10876: # Everything is cached by the main uri, libraries are never directly cached
10877: #
10878: if (!defined($liburi)) {
10879: my ($result,$cached)=&is_cached_new('meta',$uri);
10880: if (defined($cached)) { return $result->{':'.$what}; }
10881: }
10882: {
10883: # Imported parts would go here
10884: my %importedids=();
10885: my @origfileimportpartids=();
10886: my $importedparts=0;
10887: #
10888: # Is this a recursive call for a library?
10889: #
10890: # if (! exists($metacache{$uri})) {
10891: # $metacache{$uri}={};
10892: # }
10893: my $cachetime = 60*60;
10894: if ($liburi) {
10895: $liburi=&declutter($liburi);
10896: $filename=$liburi;
10897: } else {
10898: &devalidate_cache_new('meta',$uri);
10899: undef(%metaentry);
10900: }
10901: my %metathesekeys=();
10902: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10903: my $metastring;
10904: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10905: my $which = &hreflocation('','/'.($liburi || $uri));
10906: $metastring =
10907: &Apache::lonnet::ssi_body($which,
10908: ('grade_target' => 'meta'));
10909: $cachetime = 1; # only want this cached in the child not long term
10910: } elsif (($uri !~ m -^(editupload)/-) &&
10911: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10912: my $file=&filelocation('',&clutter($filename));
10913: #push(@{$metaentry{$uri.'.file'}},$file);
10914: $metastring=&getfile($file);
10915: }
10916: my $parser=HTML::LCParser->new(\$metastring);
10917: my $token;
10918: undef %metathesekeys;
10919: while ($token=$parser->get_token) {
10920: if ($token->[0] eq 'S') {
10921: if (defined($token->[2]->{'package'})) {
10922: #
10923: # This is a package - get package info
10924: #
10925: my $package=$token->[2]->{'package'};
10926: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10927: if (defined($token->[2]->{'id'})) {
10928: $keyroot.='_'.$token->[2]->{'id'};
10929: }
10930: if ($metaentry{':packages'}) {
10931: $metaentry{':packages'}.=','.$package.$keyroot;
10932: } else {
10933: $metaentry{':packages'}=$package.$keyroot;
10934: }
10935: foreach my $pack_entry (keys(%packagetab)) {
10936: my $part=$keyroot;
10937: $part=~s/^\_//;
10938: if ($pack_entry=~/^\Q$package\E\&/ ||
10939: $pack_entry=~/^\Q$package\E_0\&/) {
10940: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10941: # ignore package.tab specified default values
10942: # here &package_tab_default() will fetch those
10943: if ($subp eq 'default') { next; }
10944: my $value=$packagetab{$pack_entry};
10945: my $unikey;
10946: if ($pack =~ /_0$/) {
10947: $unikey='parameter_0_'.$name;
10948: $part=0;
10949: } else {
10950: $unikey='parameter'.$keyroot.'_'.$name;
10951: }
10952: if ($subp eq 'display') {
10953: $value.=' [Part: '.$part.']';
10954: }
10955: $metaentry{':'.$unikey.'.part'}=$part;
10956: $metathesekeys{$unikey}=1;
10957: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10958: $metaentry{':'.$unikey.'.'.$subp}=$value;
10959: }
10960: if (defined($metaentry{':'.$unikey.'.default'})) {
10961: $metaentry{':'.$unikey}=
10962: $metaentry{':'.$unikey.'.default'};
10963: }
10964: }
10965: }
10966: } else {
10967: #
10968: # This is not a package - some other kind of start tag
10969: #
10970: my $entry=$token->[1];
10971: my $unikey='';
10972:
10973: if ($entry eq 'import') {
10974: #
10975: # Importing a library here
10976: #
10977: my $location=$parser->get_text('/import');
10978: my $dir=$filename;
10979: $dir=~s|[^/]*$||;
10980: $location=&filelocation($dir,$location);
10981:
10982: my $importmode=$token->[2]->{'importmode'};
10983: if ($importmode eq 'problem') {
10984: # Import as problem/response
10985: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10986: } elsif ($importmode eq 'part') {
10987: # Import as part(s)
10988: $importedparts=1;
10989: # We need to get the original file and the imported file to get the part order correct
10990: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10991: # Load and inspect original file
10992: if ($#origfileimportpartids<0) {
10993: undef(%importedpartids);
10994: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10995: my $origfile=&getfile($origfilelocation);
10996: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10997: }
10998:
10999: # Load and inspect imported file
11000: my $impfile=&getfile($location);
11001: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11002: if ($#impfilepartids>=0) {
11003: # This problem had parts
11004: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
11005: } else {
11006: # Importing by turning a single problem into a problem part
11007: # It gets the import-tags ID as part-ID
11008: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
11009: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
11010: }
11011: } else {
11012: # Normal import
11013: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11014: if (defined($token->[2]->{'id'})) {
11015: $unikey.='_'.$token->[2]->{'id'};
11016: }
11017: }
11018:
11019: if ($depthcount<20) {
11020: my $metadata =
11021: &metadata($uri,'keys', $location,$unikey,
11022: $depthcount+1);
11023: foreach my $meta (split(',',$metadata)) {
11024: $metaentry{':'.$meta}=$metaentry{':'.$meta};
11025: $metathesekeys{$meta}=1;
11026: }
11027:
11028: }
11029: } else {
11030: #
11031: # Not importing, some other kind of non-package, non-library start tag
11032: #
11033: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
11034: if (defined($token->[2]->{'id'})) {
11035: $unikey.='_'.$token->[2]->{'id'};
11036: }
11037: if (defined($token->[2]->{'name'})) {
11038: $unikey.='_'.$token->[2]->{'name'};
11039: }
11040: $metathesekeys{$unikey}=1;
11041: foreach my $param (@{$token->[3]}) {
11042: $metaentry{':'.$unikey.'.'.$param} =
11043: $token->[2]->{$param};
11044: }
11045: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
11046: my $default=$metaentry{':'.$unikey.'.default'};
11047: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
11048: # only ws inside the tag, and not in default, so use default
11049: # as value
11050: $metaentry{':'.$unikey}=$default;
11051: } elsif ( $internaltext =~ /\S/ ) {
11052: # something interesting inside the tag
11053: $metaentry{':'.$unikey}=$internaltext;
11054: } else {
11055: # no interesting values, don't set a default
11056: }
11057: # end of not-a-package not-a-library import
11058: }
11059: # end of not-a-package start tag
11060: }
11061: # the next is the end of "start tag"
11062: }
11063: }
11064: my ($extension) = ($uri =~ /\.(\w+)$/);
11065: $extension = lc($extension);
11066: if ($extension eq 'htm') { $extension='html'; }
11067:
11068: foreach my $key (keys(%packagetab)) {
11069: #no specific packages #how's our extension
11070: if ($key!~/^extension_\Q$extension\E&/) { next; }
11071: &metadata_create_package_def($uri,$key,'extension_'.$extension,
11072: \%metathesekeys);
11073: }
11074:
11075: if (!exists($metaentry{':packages'})
11076: || $packagetab{"import_defaults&extension_$extension"}) {
11077: foreach my $key (keys(%packagetab)) {
11078: #no specific packages well let's get default then
11079: if ($key!~/^default&/) { next; }
11080: &metadata_create_package_def($uri,$key,'default',
11081: \%metathesekeys);
11082: }
11083: }
11084: # are there custom rights to evaluate
11085: if ($metaentry{':copyright'} eq 'custom') {
11086:
11087: #
11088: # Importing a rights file here
11089: #
11090: unless ($depthcount) {
11091: my $location=$metaentry{':customdistributionfile'};
11092: my $dir=$filename;
11093: $dir=~s|[^/]*$||;
11094: $location=&filelocation($dir,$location);
11095: my $rights_metadata =
11096: &metadata($uri,'keys',$location,'_rights',
11097: $depthcount+1);
11098: foreach my $rights (split(',',$rights_metadata)) {
11099: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
11100: $metathesekeys{$rights}=1;
11101: }
11102: }
11103: }
11104: # uniqifiy package listing
11105: my %seen;
11106: my @uniq_packages =
11107: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
11108: $metaentry{':packages'} = join(',',@uniq_packages);
11109:
11110: if ($importedparts) {
11111: # We had imported parts and need to rebuild partorder
11112: $metaentry{':partorder'}='';
11113: $metathesekeys{'partorder'}=1;
11114: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
11115: if ($origfileimportpartids[$index] eq 'part') {
11116: # original part, part of the problem
11117: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
11118: } else {
11119: # we have imported parts at this position
11120: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
11121: }
11122: }
11123: $metaentry{':partorder'}=~s/^\,//;
11124: }
11125:
11126: $metaentry{':keys'} = join(',',keys(%metathesekeys));
11127: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
11128: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
11129: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
11130: # this is the end of "was not already recently cached
11131: }
11132: return $metaentry{':'.$what};
11133: }
11134:
11135: sub metadata_create_package_def {
11136: my ($uri,$key,$package,$metathesekeys)=@_;
11137: my ($pack,$name,$subp)=split(/\&/,$key);
11138: if ($subp eq 'default') { next; }
11139:
11140: if (defined($metaentry{':packages'})) {
11141: $metaentry{':packages'}.=','.$package;
11142: } else {
11143: $metaentry{':packages'}=$package;
11144: }
11145: my $value=$packagetab{$key};
11146: my $unikey;
11147: $unikey='parameter_0_'.$name;
11148: $metaentry{':'.$unikey.'.part'}=0;
11149: $$metathesekeys{$unikey}=1;
11150: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11151: $metaentry{':'.$unikey.'.'.$subp}=$value;
11152: }
11153: if (defined($metaentry{':'.$unikey.'.default'})) {
11154: $metaentry{':'.$unikey}=
11155: $metaentry{':'.$unikey.'.default'};
11156: }
11157: }
11158:
11159: sub metadata_generate_part0 {
11160: my ($metadata,$metacache,$uri) = @_;
11161: my %allnames;
11162: foreach my $metakey (keys(%$metadata)) {
11163: if ($metakey=~/^parameter\_(.*)/) {
11164: my $part=$$metacache{':'.$metakey.'.part'};
11165: my $name=$$metacache{':'.$metakey.'.name'};
11166: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
11167: $allnames{$name}=$part;
11168: }
11169: }
11170: }
11171: foreach my $name (keys(%allnames)) {
11172: $$metadata{"parameter_0_$name"}=1;
11173: my $key=":parameter_0_$name";
11174: $$metacache{"$key.part"}='0';
11175: $$metacache{"$key.name"}=$name;
11176: $$metacache{"$key.type"}=$$metacache{':parameter_'.
11177: $allnames{$name}.'_'.$name.
11178: '.type'};
11179: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
11180: '.display'};
11181: my $expr='[Part: '.$allnames{$name}.']';
11182: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
11183: $$metacache{"$key.display"}=$olddis;
11184: }
11185: }
11186:
11187: # ------------------------------------------------------ Devalidate title cache
11188:
11189: sub devalidate_title_cache {
11190: my ($url)=@_;
11191: if (!$env{'request.course.id'}) { return; }
11192: my $symb=&symbread($url);
11193: if (!$symb) { return; }
11194: my $key=$env{'request.course.id'}."\0".$symb;
11195: &devalidate_cache_new('title',$key);
11196: }
11197:
11198: # ------------------------------------------------- Get the title of a course
11199:
11200: sub current_course_title {
11201: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
11202: }
11203: # ------------------------------------------------- Get the title of a resource
11204:
11205: sub gettitle {
11206: my $urlsymb=shift;
11207: my $symb=&symbread($urlsymb);
11208: if ($symb) {
11209: my $key=$env{'request.course.id'}."\0".$symb;
11210: my ($result,$cached)=&is_cached_new('title',$key);
11211: if (defined($cached)) {
11212: return $result;
11213: }
11214: my ($map,$resid,$url)=&decode_symb($symb);
11215: my $title='';
11216: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
11217: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
11218: } else {
11219: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11220: &GDBM_READER(),0640)) {
11221: my $mapid=$bighash{'map_pc_'.&clutter($map)};
11222: $title=$bighash{'title_'.$mapid.'.'.$resid};
11223: untie(%bighash);
11224: }
11225: }
11226: $title=~s/\&colon\;/\:/gs;
11227: if ($title) {
11228: # Remember both $symb and $title for dynamic metadata
11229: $accesshash{$symb.'___crstitle'}=$title;
11230: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
11231: # Cache this title and then return it
11232: return &do_cache_new('title',$key,$title,600);
11233: }
11234: $urlsymb=$url;
11235: }
11236: my $title=&metadata($urlsymb,'title');
11237: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
11238: return $title;
11239: }
11240:
11241: sub get_slot {
11242: my ($which,$cnum,$cdom)=@_;
11243: if (!$cnum || !$cdom) {
11244: (undef,my $courseid)=&whichuser();
11245: $cdom=$env{'course.'.$courseid.'.domain'};
11246: $cnum=$env{'course.'.$courseid.'.num'};
11247: }
11248: my $key=join("\0",'slots',$cdom,$cnum,$which);
11249: my %slotinfo;
11250: if (exists($remembered{$key})) {
11251: $slotinfo{$which} = $remembered{$key};
11252: } else {
11253: %slotinfo=&get('slots',[$which],$cdom,$cnum);
11254: &Apache::lonhomework::showhash(%slotinfo);
11255: my ($tmp)=keys(%slotinfo);
11256: if ($tmp=~/^error:/) { return (); }
11257: $remembered{$key} = $slotinfo{$which};
11258: }
11259: if (ref($slotinfo{$which}) eq 'HASH') {
11260: return %{$slotinfo{$which}};
11261: }
11262: return $slotinfo{$which};
11263: }
11264:
11265: sub get_reservable_slots {
11266: my ($cnum,$cdom,$uname,$udom) = @_;
11267: my $now = time;
11268: my $reservable_info;
11269: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
11270: if (exists($remembered{$key})) {
11271: $reservable_info = $remembered{$key};
11272: } else {
11273: my %resv;
11274: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
11275: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
11276: $reservable_info = \%resv;
11277: $remembered{$key} = $reservable_info;
11278: }
11279: return $reservable_info;
11280: }
11281:
11282: sub get_course_slots {
11283: my ($cnum,$cdom) = @_;
11284: my $hashid=$cnum.':'.$cdom;
11285: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
11286: if (defined($cached)) {
11287: if (ref($result) eq 'HASH') {
11288: return %{$result};
11289: }
11290: } else {
11291: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
11292: my ($tmp) = keys(%slots);
11293: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11294: &do_cache_new('allslots',$hashid,\%slots,600);
11295: return %slots;
11296: }
11297: }
11298: return;
11299: }
11300:
11301: sub devalidate_slots_cache {
11302: my ($cnum,$cdom)=@_;
11303: my $hashid=$cnum.':'.$cdom;
11304: &devalidate_cache_new('allslots',$hashid);
11305: }
11306:
11307: sub get_coursechange {
11308: my ($cdom,$cnum) = @_;
11309: if ($cdom eq '' || $cnum eq '') {
11310: return unless ($env{'request.course.id'});
11311: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
11312: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
11313: }
11314: my $hashid=$cdom.'_'.$cnum;
11315: my ($change,$cached)=&is_cached_new('crschange',$hashid);
11316: if ((defined($cached)) && ($change ne '')) {
11317: return $change;
11318: } else {
11319: my %crshash;
11320: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
11321: if ($crshash{'internal.contentchange'} eq '') {
11322: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
11323: if ($change eq '') {
11324: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
11325: $change = $crshash{'internal.created'};
11326: }
11327: } else {
11328: $change = $crshash{'internal.contentchange'};
11329: }
11330: my $cachetime = 600;
11331: &do_cache_new('crschange',$hashid,$change,$cachetime);
11332: }
11333: return $change;
11334: }
11335:
11336: sub devalidate_coursechange_cache {
11337: my ($cnum,$cdom)=@_;
11338: my $hashid=$cnum.':'.$cdom;
11339: &devalidate_cache_new('crschange',$hashid);
11340: }
11341:
11342: # ------------------------------------------------- Update symbolic store links
11343:
11344: sub symblist {
11345: my ($mapname,%newhash)=@_;
11346: $mapname=&deversion(&declutter($mapname));
11347: my %hash;
11348: if (($env{'request.course.fn'}) && (%newhash)) {
11349: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11350: &GDBM_WRCREAT(),0640)) {
11351: foreach my $url (keys(%newhash)) {
11352: next if ($url eq 'last_known'
11353: && $env{'form.no_update_last_known'});
11354: $hash{declutter($url)}=&encode_symb($mapname,
11355: $newhash{$url}->[1],
11356: $newhash{$url}->[0]);
11357: }
11358: if (untie(%hash)) {
11359: return 'ok';
11360: }
11361: }
11362: }
11363: return 'error';
11364: }
11365:
11366: # --------------------------------------------------------------- Verify a symb
11367:
11368: sub symbverify {
11369: my ($symb,$thisurl,$encstate)=@_;
11370: my $thisfn=$thisurl;
11371: $thisfn=&declutter($thisfn);
11372: # direct jump to resource in page or to a sequence - will construct own symbs
11373: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
11374: # check URL part
11375: my ($map,$resid,$url)=&decode_symb($symb);
11376:
11377: unless ($url eq $thisfn) { return 0; }
11378:
11379: $symb=&symbclean($symb);
11380: $thisurl=&deversion($thisurl);
11381: $thisfn=&deversion($thisfn);
11382:
11383: my %bighash;
11384: my $okay=0;
11385:
11386: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11387: &GDBM_READER(),0640)) {
11388: my $noclutter;
11389: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
11390: $thisurl =~ s/\?.+$//;
11391: if ($map =~ m{^uploaded/.+\.page$}) {
11392: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
11393: $thisurl =~ s{^\Qhttp://https://\E}{https://};
11394: $noclutter = 1;
11395: }
11396: }
11397: my $ids;
11398: if ($noclutter) {
11399: $ids=$bighash{'ids_'.$thisurl};
11400: } else {
11401: $ids=$bighash{'ids_'.&clutter($thisurl)};
11402: }
11403: unless ($ids) {
11404: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
11405: $ids=$bighash{$idkey};
11406: }
11407: if ($ids) {
11408: # ------------------------------------------------------------------- Has ID(s)
11409: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
11410: $symb =~ s/\?.+$//;
11411: }
11412: foreach my $id (split(/\,/,$ids)) {
11413: my ($mapid,$resid)=split(/\./,$id);
11414: if (
11415: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
11416: eq $symb) {
11417: if (ref($encstate)) {
11418: $$encstate = $bighash{'encrypted_'.$id};
11419: }
11420: if (($env{'request.role.adv'}) ||
11421: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
11422: ($thisurl eq '/adm/navmaps')) {
11423: $okay=1;
11424: last;
11425: }
11426: }
11427: }
11428: }
11429: untie(%bighash);
11430: }
11431: return $okay;
11432: }
11433:
11434: # --------------------------------------------------------------- Clean-up symb
11435:
11436: sub symbclean {
11437: my $symb=shift;
11438: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11439: # remove version from map
11440: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
11441:
11442: # remove version from URL
11443: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
11444:
11445: # remove wrapper
11446:
11447: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
11448: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
11449: return $symb;
11450: }
11451:
11452: # ---------------------------------------------- Split symb to find map and url
11453:
11454: sub encode_symb {
11455: my ($map,$resid,$url)=@_;
11456: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
11457: }
11458:
11459: sub decode_symb {
11460: my $symb=shift;
11461: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11462: my ($map,$resid,$url)=split(/___/,$symb);
11463: return (&fixversion($map),$resid,&fixversion($url));
11464: }
11465:
11466: sub fixversion {
11467: my $fn=shift;
11468: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
11469: my %bighash;
11470: my $uri=&clutter($fn);
11471: my $key=$env{'request.course.id'}.'_'.$uri;
11472: # is this cached?
11473: my ($result,$cached)=&is_cached_new('courseresversion',$key);
11474: if (defined($cached)) { return $result; }
11475: # unfortunately not cached, or expired
11476: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11477: &GDBM_READER(),0640)) {
11478: if ($bighash{'version_'.$uri}) {
11479: my $version=$bighash{'version_'.$uri};
11480: unless (($version eq 'mostrecent') ||
11481: ($version==&getversion($uri))) {
11482: $uri=~s/\.(\w+)$/\.$version\.$1/;
11483: }
11484: }
11485: untie %bighash;
11486: }
11487: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
11488: }
11489:
11490: sub deversion {
11491: my $url=shift;
11492: $url=~s/\.\d+\.(\w+)$/\.$1/;
11493: return $url;
11494: }
11495:
11496: # ------------------------------------------------------ Return symb list entry
11497:
11498: sub symbread {
11499: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
11500: my $cache_str='request.symbread.cached.'.$thisfn;
11501: if (defined($env{$cache_str})) {
11502: if ($ignorecachednull) {
11503: return $env{$cache_str} unless ($env{$cache_str} eq '');
11504: } else {
11505: return $env{$cache_str};
11506: }
11507: }
11508: # no filename provided? try from environment
11509: unless ($thisfn) {
11510: if ($env{'request.symb'}) {
11511: return $env{$cache_str}=&symbclean($env{'request.symb'});
11512: }
11513: $thisfn=$env{'request.filename'};
11514: }
11515: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11516: # is that filename actually a symb? Verify, clean, and return
11517: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
11518: if (&symbverify($thisfn,$1)) {
11519: return $env{$cache_str}=&symbclean($thisfn);
11520: }
11521: }
11522: $thisfn=declutter($thisfn);
11523: my %hash;
11524: my %bighash;
11525: my $syval='';
11526: if (($env{'request.course.fn'}) && ($thisfn)) {
11527: my $targetfn = $thisfn;
11528: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
11529: $targetfn = 'adm/wrapper/'.$thisfn;
11530: }
11531: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
11532: $targetfn=$1;
11533: }
11534: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11535: &GDBM_READER(),0640)) {
11536: $syval=$hash{$targetfn};
11537: untie(%hash);
11538: }
11539: # ---------------------------------------------------------- There was an entry
11540: if ($syval) {
11541: #unless ($syval=~/\_\d+$/) {
11542: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
11543: #&appenv({'request.ambiguous' => $thisfn});
11544: #return $env{$cache_str}='';
11545: #}
11546: #$syval.=$1;
11547: #}
11548: } else {
11549: # ------------------------------------------------------- Was not in symb table
11550: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11551: &GDBM_READER(),0640)) {
11552: # ---------------------------------------------- Get ID(s) for current resource
11553: my $ids=$bighash{'ids_'.&clutter($thisfn)};
11554: unless ($ids) {
11555: $ids=$bighash{'ids_/'.$thisfn};
11556: }
11557: unless ($ids) {
11558: # alias?
11559: $ids=$bighash{'mapalias_'.$thisfn};
11560: }
11561: if ($ids) {
11562: # ------------------------------------------------------------------- Has ID(s)
11563: my @possibilities=split(/\,/,$ids);
11564: if ($#possibilities==0) {
11565: # ----------------------------------------------- There is only one possibility
11566: my ($mapid,$resid)=split(/\./,$ids);
11567: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11568: $resid,$thisfn);
11569: if (ref($possibles) eq 'HASH') {
11570: $possibles->{$syval} = 1;
11571: }
11572: if ($checkforblock) {
11573: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
11574: if (@blockers) {
11575: $syval = '';
11576: return;
11577: }
11578: }
11579: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11580: # ------------------------------------------ There is more than one possibility
11581: my $realpossible=0;
11582: foreach my $id (@possibilities) {
11583: my $file=$bighash{'src_'.$id};
11584: my $canaccess;
11585: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11586: $canaccess = 1;
11587: } else {
11588: $canaccess = &allowed('bre',$file);
11589: }
11590: if ($canaccess) {
11591: my ($mapid,$resid)=split(/\./,$id);
11592: if ($bighash{'map_type_'.$mapid} ne 'page') {
11593: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
11594: $resid,$thisfn);
11595: if (ref($possibles) eq 'HASH') {
11596: $possibles->{$syval} = 1;
11597: }
11598: if ($checkforblock) {
11599: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
11600: unless (@blockers > 0) {
11601: $syval = $poss_syval;
11602: $realpossible++;
11603: }
11604: } else {
11605: $syval = $poss_syval;
11606: $realpossible++;
11607: }
11608: }
11609: }
11610: }
11611: if ($realpossible!=1) { $syval=''; }
11612: } else {
11613: $syval='';
11614: }
11615: }
11616: untie(%bighash);
11617: }
11618: }
11619: if ($syval) {
11620: return $env{$cache_str}=$syval;
11621: }
11622: }
11623: &appenv({'request.ambiguous' => $thisfn});
11624: return $env{$cache_str}='';
11625: }
11626:
11627: # ---------------------------------------------------------- Return random seed
11628:
11629: sub numval {
11630: my $txt=shift;
11631: $txt=~tr/A-J/0-9/;
11632: $txt=~tr/a-j/0-9/;
11633: $txt=~tr/K-T/0-9/;
11634: $txt=~tr/k-t/0-9/;
11635: $txt=~tr/U-Z/0-5/;
11636: $txt=~tr/u-z/0-5/;
11637: $txt=~s/\D//g;
11638: if ($_64bit) { if ($txt > 2**32) { return -1; } }
11639: return int($txt);
11640: }
11641:
11642: sub numval2 {
11643: my $txt=shift;
11644: $txt=~tr/A-J/0-9/;
11645: $txt=~tr/a-j/0-9/;
11646: $txt=~tr/K-T/0-9/;
11647: $txt=~tr/k-t/0-9/;
11648: $txt=~tr/U-Z/0-5/;
11649: $txt=~tr/u-z/0-5/;
11650: $txt=~s/\D//g;
11651: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11652: my $total;
11653: foreach my $val (@txts) { $total+=$val; }
11654: if ($_64bit) { if ($total > 2**32) { return -1; } }
11655: return int($total);
11656: }
11657:
11658: sub numval3 {
11659: use integer;
11660: my $txt=shift;
11661: $txt=~tr/A-J/0-9/;
11662: $txt=~tr/a-j/0-9/;
11663: $txt=~tr/K-T/0-9/;
11664: $txt=~tr/k-t/0-9/;
11665: $txt=~tr/U-Z/0-5/;
11666: $txt=~tr/u-z/0-5/;
11667: $txt=~s/\D//g;
11668: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11669: my $total;
11670: foreach my $val (@txts) { $total+=$val; }
11671: if ($_64bit) { $total=(($total<<32)>>32); }
11672: return $total;
11673: }
11674:
11675: sub digest {
11676: my ($data)=@_;
11677: my $digest=&Digest::MD5::md5($data);
11678: my ($a,$b,$c,$d)=unpack("iiii",$digest);
11679: my ($e,$f);
11680: {
11681: use integer;
11682: $e=($a+$b);
11683: $f=($c+$d);
11684: if ($_64bit) {
11685: $e=(($e<<32)>>32);
11686: $f=(($f<<32)>>32);
11687: }
11688: }
11689: if (wantarray) {
11690: return ($e,$f);
11691: } else {
11692: my $g;
11693: {
11694: use integer;
11695: $g=($e+$f);
11696: if ($_64bit) {
11697: $g=(($g<<32)>>32);
11698: }
11699: }
11700: return $g;
11701: }
11702: }
11703:
11704: sub latest_rnd_algorithm_id {
11705: return '64bit5';
11706: }
11707:
11708: sub get_rand_alg {
11709: my ($courseid)=@_;
11710: if (!$courseid) { $courseid=(&whichuser())[1]; }
11711: if ($courseid) {
11712: return $env{"course.$courseid.rndseed"};
11713: }
11714: return &latest_rnd_algorithm_id();
11715: }
11716:
11717: sub validCODE {
11718: my ($CODE)=@_;
11719: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
11720: return 0;
11721: }
11722:
11723: sub getCODE {
11724: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
11725: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
11726: defined($Apache::lonhomework::parsing_a_task) ) &&
11727: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
11728: return $Apache::lonhomework::history{'resource.CODE'};
11729: }
11730: return undef;
11731: }
11732: #
11733: # Determines the random seed for a specific context:
11734: #
11735: # parameters:
11736: # symb - in course context the symb for the seed.
11737: # course_id - The course id of the form domain_coursenum.
11738: # domain - Domain for the user.
11739: # course - Course for the user.
11740: # cenv - environment of the course.
11741: #
11742: # NOTE:
11743: # All parameters are picked out of the environment if missing
11744: # or not defined.
11745: # If a symb cannot be determined the current time is used instead.
11746: #
11747: # For a given well defined symb, courside, domain, username,
11748: # and course environment, the seed is reproducible.
11749: #
11750: sub rndseed {
11751: my ($symb,$courseid,$domain,$username, $cenv)=@_;
11752: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
11753: if (!defined($symb)) {
11754: unless ($symb=$wsymb) { return time; }
11755: }
11756: if (!defined $courseid) {
11757: $courseid=$wcourseid;
11758: }
11759: if (!defined $domain) { $domain=$wdomain; }
11760: if (!defined $username) { $username=$wusername }
11761:
11762: my $which;
11763: if (defined($cenv->{'rndseed'})) {
11764: $which = $cenv->{'rndseed'};
11765: } else {
11766: $which =&get_rand_alg($courseid);
11767: }
11768: if (defined(&getCODE())) {
11769:
11770: if ($which eq '64bit5') {
11771: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
11772: } elsif ($which eq '64bit4') {
11773: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
11774: } else {
11775: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
11776: }
11777: } elsif ($which eq '64bit5') {
11778: return &rndseed_64bit5($symb,$courseid,$domain,$username);
11779: } elsif ($which eq '64bit4') {
11780: return &rndseed_64bit4($symb,$courseid,$domain,$username);
11781: } elsif ($which eq '64bit3') {
11782: return &rndseed_64bit3($symb,$courseid,$domain,$username);
11783: } elsif ($which eq '64bit2') {
11784: return &rndseed_64bit2($symb,$courseid,$domain,$username);
11785: } elsif ($which eq '64bit') {
11786: return &rndseed_64bit($symb,$courseid,$domain,$username);
11787: }
11788: return &rndseed_32bit($symb,$courseid,$domain,$username);
11789: }
11790:
11791: sub rndseed_32bit {
11792: my ($symb,$courseid,$domain,$username)=@_;
11793: {
11794: use integer;
11795: my $symbchck=unpack("%32C*",$symb) << 27;
11796: my $symbseed=numval($symb) << 22;
11797: my $namechck=unpack("%32C*",$username) << 17;
11798: my $nameseed=numval($username) << 12;
11799: my $domainseed=unpack("%32C*",$domain) << 7;
11800: my $courseseed=unpack("%32C*",$courseid);
11801: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11802: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11803: #&logthis("rndseed :$num:$symb");
11804: if ($_64bit) { $num=(($num<<32)>>32); }
11805: return $num;
11806: }
11807: }
11808:
11809: sub rndseed_64bit {
11810: my ($symb,$courseid,$domain,$username)=@_;
11811: {
11812: use integer;
11813: my $symbchck=unpack("%32S*",$symb) << 21;
11814: my $symbseed=numval($symb) << 10;
11815: my $namechck=unpack("%32S*",$username);
11816:
11817: my $nameseed=numval($username) << 21;
11818: my $domainseed=unpack("%32S*",$domain) << 10;
11819: my $courseseed=unpack("%32S*",$courseid);
11820:
11821: my $num1=$symbchck+$symbseed+$namechck;
11822: my $num2=$nameseed+$domainseed+$courseseed;
11823: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11824: #&logthis("rndseed :$num:$symb");
11825: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11826: return "$num1,$num2";
11827: }
11828: }
11829:
11830: sub rndseed_64bit2 {
11831: my ($symb,$courseid,$domain,$username)=@_;
11832: {
11833: use integer;
11834: # strings need to be an even # of cahracters long, it it is odd the
11835: # last characters gets thrown away
11836: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11837: my $symbseed=numval($symb) << 10;
11838: my $namechck=unpack("%32S*",$username.' ');
11839:
11840: my $nameseed=numval($username) << 21;
11841: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11842: my $courseseed=unpack("%32S*",$courseid.' ');
11843:
11844: my $num1=$symbchck+$symbseed+$namechck;
11845: my $num2=$nameseed+$domainseed+$courseseed;
11846: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11847: #&logthis("rndseed :$num:$symb");
11848: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11849: return "$num1,$num2";
11850: }
11851: }
11852:
11853: sub rndseed_64bit3 {
11854: my ($symb,$courseid,$domain,$username)=@_;
11855: {
11856: use integer;
11857: # strings need to be an even # of cahracters long, it it is odd the
11858: # last characters gets thrown away
11859: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11860: my $symbseed=numval2($symb) << 10;
11861: my $namechck=unpack("%32S*",$username.' ');
11862:
11863: my $nameseed=numval2($username) << 21;
11864: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11865: my $courseseed=unpack("%32S*",$courseid.' ');
11866:
11867: my $num1=$symbchck+$symbseed+$namechck;
11868: my $num2=$nameseed+$domainseed+$courseseed;
11869: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11870: #&logthis("rndseed :$num1:$num2:$_64bit");
11871: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11872:
11873: return "$num1:$num2";
11874: }
11875: }
11876:
11877: sub rndseed_64bit4 {
11878: my ($symb,$courseid,$domain,$username)=@_;
11879: {
11880: use integer;
11881: # strings need to be an even # of cahracters long, it it is odd the
11882: # last characters gets thrown away
11883: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11884: my $symbseed=numval3($symb) << 10;
11885: my $namechck=unpack("%32S*",$username.' ');
11886:
11887: my $nameseed=numval3($username) << 21;
11888: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11889: my $courseseed=unpack("%32S*",$courseid.' ');
11890:
11891: my $num1=$symbchck+$symbseed+$namechck;
11892: my $num2=$nameseed+$domainseed+$courseseed;
11893: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11894: #&logthis("rndseed :$num1:$num2:$_64bit");
11895: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11896:
11897: return "$num1:$num2";
11898: }
11899: }
11900:
11901: sub rndseed_64bit5 {
11902: my ($symb,$courseid,$domain,$username)=@_;
11903: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11904: return "$num1:$num2";
11905: }
11906:
11907: sub rndseed_CODE_64bit {
11908: my ($symb,$courseid,$domain,$username)=@_;
11909: {
11910: use integer;
11911: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11912: my $symbseed=numval2($symb);
11913: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11914: my $CODEseed=numval(&getCODE());
11915: my $courseseed=unpack("%32S*",$courseid.' ');
11916: my $num1=$symbseed+$CODEchck;
11917: my $num2=$CODEseed+$courseseed+$symbchck;
11918: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11919: #&logthis("rndseed :$num1:$num2:$symb");
11920: if ($_64bit) { $num1=(($num1<<32)>>32); }
11921: if ($_64bit) { $num2=(($num2<<32)>>32); }
11922: return "$num1:$num2";
11923: }
11924: }
11925:
11926: sub rndseed_CODE_64bit4 {
11927: my ($symb,$courseid,$domain,$username)=@_;
11928: {
11929: use integer;
11930: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11931: my $symbseed=numval3($symb);
11932: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11933: my $CODEseed=numval3(&getCODE());
11934: my $courseseed=unpack("%32S*",$courseid.' ');
11935: my $num1=$symbseed+$CODEchck;
11936: my $num2=$CODEseed+$courseseed+$symbchck;
11937: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11938: #&logthis("rndseed :$num1:$num2:$symb");
11939: if ($_64bit) { $num1=(($num1<<32)>>32); }
11940: if ($_64bit) { $num2=(($num2<<32)>>32); }
11941: return "$num1:$num2";
11942: }
11943: }
11944:
11945: sub rndseed_CODE_64bit5 {
11946: my ($symb,$courseid,$domain,$username)=@_;
11947: my $code = &getCODE();
11948: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11949: return "$num1:$num2";
11950: }
11951:
11952: sub setup_random_from_rndseed {
11953: my ($rndseed)=@_;
11954: if ($rndseed =~/([,:])/) {
11955: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
11956: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
11957: &Math::Random::random_set_seed_from_phrase($rndseed);
11958: } else {
11959: &Math::Random::random_set_seed($num1,$num2);
11960: }
11961: } else {
11962: &Math::Random::random_set_seed_from_phrase($rndseed);
11963: }
11964: }
11965:
11966: sub latest_receipt_algorithm_id {
11967: return 'receipt3';
11968: }
11969:
11970: sub recunique {
11971: my $fucourseid=shift;
11972: my $unique;
11973: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11974: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11975: $unique=$env{"course.$fucourseid.internal.encseed"};
11976: } else {
11977: $unique=$perlvar{'lonReceipt'};
11978: }
11979: return unpack("%32C*",$unique);
11980: }
11981:
11982: sub recprefix {
11983: my $fucourseid=shift;
11984: my $prefix;
11985: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11986: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11987: $prefix=$env{"course.$fucourseid.internal.encpref"};
11988: } else {
11989: $prefix=$perlvar{'lonHostID'};
11990: }
11991: return unpack("%32C*",$prefix);
11992: }
11993:
11994: sub ireceipt {
11995: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11996:
11997: my $return =&recprefix($fucourseid).'-';
11998:
11999: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
12000: $env{'request.state'} eq 'construct') {
12001: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
12002: return $return;
12003: }
12004:
12005: my $cuname=unpack("%32C*",$funame);
12006: my $cudom=unpack("%32C*",$fudom);
12007: my $cucourseid=unpack("%32C*",$fucourseid);
12008: my $cusymb=unpack("%32C*",$fusymb);
12009: my $cunique=&recunique($fucourseid);
12010: my $cpart=unpack("%32S*",$part);
12011: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
12012:
12013: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
12014:
12015: $return.= ($cunique%$cuname+
12016: $cunique%$cudom+
12017: $cusymb%$cuname+
12018: $cusymb%$cudom+
12019: $cucourseid%$cuname+
12020: $cucourseid%$cudom+
12021: $cpart%$cuname+
12022: $cpart%$cudom);
12023: } else {
12024: $return.= ($cunique%$cuname+
12025: $cunique%$cudom+
12026: $cusymb%$cuname+
12027: $cusymb%$cudom+
12028: $cucourseid%$cuname+
12029: $cucourseid%$cudom);
12030: }
12031: return $return;
12032: }
12033:
12034: sub receipt {
12035: my ($part)=@_;
12036: my ($symb,$courseid,$domain,$name) = &whichuser();
12037: return &ireceipt($name,$domain,$courseid,$symb,$part);
12038: }
12039:
12040: sub whichuser {
12041: my ($passedsymb)=@_;
12042: my ($symb,$courseid,$domain,$name,$publicuser);
12043: if (defined($env{'form.grade_symb'})) {
12044: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
12045: my $allowed=&allowed('vgr',$tmp_courseid);
12046: if (!$allowed &&
12047: exists($env{'request.course.sec'}) &&
12048: $env{'request.course.sec'} !~ /^\s*$/) {
12049: $allowed=&allowed('vgr',$tmp_courseid.
12050: '/'.$env{'request.course.sec'});
12051: }
12052: if ($allowed) {
12053: ($symb)=&get_env_multiple('form.grade_symb');
12054: $courseid=$tmp_courseid;
12055: ($domain)=&get_env_multiple('form.grade_domain');
12056: ($name)=&get_env_multiple('form.grade_username');
12057: return ($symb,$courseid,$domain,$name,$publicuser);
12058: }
12059: }
12060: if (!$passedsymb) {
12061: $symb=&symbread();
12062: } else {
12063: $symb=$passedsymb;
12064: }
12065: $courseid=$env{'request.course.id'};
12066: $domain=$env{'user.domain'};
12067: $name=$env{'user.name'};
12068: if ($name eq 'public' && $domain eq 'public') {
12069: if (!defined($env{'form.username'})) {
12070: $env{'form.username'}.=time.rand(10000000);
12071: }
12072: $name.=$env{'form.username'};
12073: }
12074: return ($symb,$courseid,$domain,$name,$publicuser);
12075:
12076: }
12077:
12078: # ------------------------------------------------------------ Serves up a file
12079: # returns either the contents of the file or
12080: # -1 if the file doesn't exist
12081: #
12082: # if the target is a file that was uploaded via DOCS,
12083: # a check will be made to see if a current copy exists on the local server,
12084: # if it does this will be served, otherwise a copy will be retrieved from
12085: # the home server for the course and stored in /home/httpd/html/userfiles on
12086: # the local server.
12087:
12088: sub getfile {
12089: my ($file) = @_;
12090: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
12091: &repcopy($file);
12092: return &readfile($file);
12093: }
12094:
12095: sub repcopy_userfile {
12096: my ($file)=@_;
12097: my $londocroot = $perlvar{'lonDocRoot'};
12098: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
12099: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
12100: my ($cdom,$cnum,$filename) =
12101: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
12102: my $uri="/uploaded/$cdom/$cnum/$filename";
12103: if (-e "$file") {
12104: # we already have a local copy, check it out
12105: my @fileinfo = stat($file);
12106: my $rtncode;
12107: my $info;
12108: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
12109: if ($lwpresp ne 'ok') {
12110: # there is no such file anymore, even though we had a local copy
12111: if ($rtncode eq '404') {
12112: unlink($file);
12113: }
12114: return -1;
12115: }
12116: if ($info < $fileinfo[9]) {
12117: # nice, the file we have is up-to-date, just say okay
12118: return 'ok';
12119: } else {
12120: # the file is outdated, get rid of it
12121: unlink($file);
12122: }
12123: }
12124: # one way or the other, at this point, we don't have the file
12125: # construct the correct path for the file
12126: my @parts = ($cdom,$cnum);
12127: if ($filename =~ m|^(.+)/[^/]+$|) {
12128: push @parts, split(/\//,$1);
12129: }
12130: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
12131: foreach my $part (@parts) {
12132: $path .= '/'.$part;
12133: if (!-e $path) {
12134: mkdir($path,0770);
12135: }
12136: }
12137: # now the path exists for sure
12138: # get a user agent
12139: my $ua=new LWP::UserAgent;
12140: my $transferfile=$file.'.in.transfer';
12141: # FIXME: this should flock
12142: if (-e $transferfile) { return 'ok'; }
12143: my $request;
12144: $uri=~s/^\///;
12145: my $homeserver = &homeserver($cnum,$cdom);
12146: my $protocol = $protocol{$homeserver};
12147: $protocol = 'http' if ($protocol ne 'https');
12148: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
12149: my $response=$ua->request($request,$transferfile);
12150: # did it work?
12151: if ($response->is_error()) {
12152: unlink($transferfile);
12153: &logthis("Userfile repcopy failed for $uri");
12154: return -1;
12155: }
12156: # worked, rename the transfer file
12157: rename($transferfile,$file);
12158: return 'ok';
12159: }
12160:
12161: sub tokenwrapper {
12162: my $uri=shift;
12163: $uri=~s|^https?\://([^/]+)||;
12164: $uri=~s|^/||;
12165: $env{'user.environment'}=~/\/([^\/]+)\.id/;
12166: my $token=$1;
12167: my (undef,$udom,$uname,$file)=split('/',$uri,4);
12168: if ($udom && $uname && $file) {
12169: $file=~s|(\?\.*)*$||;
12170: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
12171: my $homeserver = &homeserver($uname,$udom);
12172: my $protocol = $protocol{$homeserver};
12173: $protocol = 'http' if ($protocol ne 'https');
12174: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
12175: (($uri=~/\?/)?'&':'?').'token='.$token.
12176: '&tokenissued='.$perlvar{'lonHostID'};
12177: } else {
12178: return '/adm/notfound.html';
12179: }
12180: }
12181:
12182: # call with reqtype HEAD: get last modification time
12183: # call with reqtype GET: get the file contents
12184: # Do not call this with reqtype GET for large files! It loads everything into memory
12185: #
12186: sub getuploaded {
12187: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
12188: $uri=~s/^\///;
12189: my $homeserver = &homeserver($cnum,$cdom);
12190: my $protocol = $protocol{$homeserver};
12191: $protocol = 'http' if ($protocol ne 'https');
12192: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
12193: my $ua=new LWP::UserAgent;
12194: my $request=new HTTP::Request($reqtype,$uri);
12195: my $response=$ua->request($request);
12196: $$rtncode = $response->code;
12197: if (! $response->is_success()) {
12198: return 'failed';
12199: }
12200: if ($reqtype eq 'HEAD') {
12201: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
12202: } elsif ($reqtype eq 'GET') {
12203: $$info = $response->content;
12204: }
12205: return 'ok';
12206: }
12207:
12208: sub readfile {
12209: my $file = shift;
12210: if ( (! -e $file ) || ($file eq '') ) { return -1; };
12211: my $fh;
12212: open($fh,"<$file");
12213: my $a='';
12214: while (my $line = <$fh>) { $a .= $line; }
12215: return $a;
12216: }
12217:
12218: sub filelocation {
12219: my ($dir,$file) = @_;
12220: my $location;
12221: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
12222:
12223: if ($file =~ m-^/adm/-) {
12224: $file=~s-^/adm/wrapper/-/-;
12225: $file=~s-^/adm/coursedocs/showdoc/-/-;
12226: }
12227:
12228: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
12229: $location = $file;
12230: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
12231: my ($udom,$uname,$filename)=
12232: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
12233: my $home=&homeserver($uname,$udom);
12234: my $is_me=0;
12235: my @ids=¤t_machine_ids();
12236: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
12237: if ($is_me) {
12238: $location=propath($udom,$uname).'/userfiles/'.$filename;
12239: } else {
12240: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
12241: $udom.'/'.$uname.'/'.$filename;
12242: }
12243: } elsif ($file =~ m-^/adm/-) {
12244: $location = $perlvar{'lonDocRoot'}.'/'.$file;
12245: } else {
12246: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
12247: $file=~s:^/(res|priv)/:/:;
12248: my $space=$1;
12249: if ( !( $file =~ m:^/:) ) {
12250: $location = $dir. '/'.$file;
12251: } else {
12252: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
12253: }
12254: }
12255: $location=~s://+:/:g; # remove duplicate /
12256: while ($location=~m{/\.\./}) {
12257: if ($location =~ m{/[^/]+/\.\./}) {
12258: $location=~ s{/[^/]+/\.\./}{/}g;
12259: } else {
12260: $location=~ s{/\.\./}{/}g;
12261: }
12262: } #remove dir/..
12263: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
12264: return $location;
12265: }
12266:
12267: sub hreflocation {
12268: my ($dir,$file)=@_;
12269: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
12270: $file=filelocation($dir,$file);
12271: } elsif ($file=~m-^/adm/-) {
12272: $file=~s-^/adm/wrapper/-/-;
12273: $file=~s-^/adm/coursedocs/showdoc/-/-;
12274: }
12275: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
12276: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
12277: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
12278: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
12279: {/uploaded/$1/$2/}x;
12280: }
12281: if ($file=~ m{^/userfiles/}) {
12282: $file =~ s{^/userfiles/}{/uploaded/};
12283: }
12284: return $file;
12285: }
12286:
12287:
12288:
12289:
12290:
12291: sub current_machine_domains {
12292: return &machine_domains(&hostname($perlvar{'lonHostID'}));
12293: }
12294:
12295: sub machine_domains {
12296: my ($hostname) = @_;
12297: my @domains;
12298: my %hostname = &all_hostnames();
12299: while( my($id, $name) = each(%hostname)) {
12300: # &logthis("-$id-$name-$hostname-");
12301: if ($hostname eq $name) {
12302: push(@domains,&host_domain($id));
12303: }
12304: }
12305: return @domains;
12306: }
12307:
12308: sub current_machine_ids {
12309: return &machine_ids(&hostname($perlvar{'lonHostID'}));
12310: }
12311:
12312: sub machine_ids {
12313: my ($hostname) = @_;
12314: $hostname ||= &hostname($perlvar{'lonHostID'});
12315: my @ids;
12316: my %name_to_host = &all_names();
12317: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
12318: return @{ $name_to_host{$hostname} };
12319: }
12320: return;
12321: }
12322:
12323: sub additional_machine_domains {
12324: my @domains;
12325: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
12326: while( my $line = <$fh>) {
12327: $line =~ s/\s//g;
12328: push(@domains,$line);
12329: }
12330: return @domains;
12331: }
12332:
12333: sub default_login_domain {
12334: my $domain = $perlvar{'lonDefDomain'};
12335: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
12336: foreach my $posdom (¤t_machine_domains(),
12337: &additional_machine_domains()) {
12338: if (lc($posdom) eq lc($testdomain)) {
12339: $domain=$posdom;
12340: last;
12341: }
12342: }
12343: return $domain;
12344: }
12345:
12346: # ------------------------------------------------------------- Declutters URLs
12347:
12348: sub declutter {
12349: my $thisfn=shift;
12350: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12351: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
12352: $thisfn=~s{^/home/httpd/html}{};
12353: }
12354: $thisfn=~s/^\///;
12355: $thisfn=~s|^adm/wrapper/||;
12356: $thisfn=~s|^adm/coursedocs/showdoc/||;
12357: $thisfn=~s/^res\///;
12358: $thisfn=~s/^priv\///;
12359: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
12360: $thisfn=~s/\?.+$//;
12361: }
12362: return $thisfn;
12363: }
12364:
12365: # ------------------------------------------------------------- Clutter up URLs
12366:
12367: sub clutter {
12368: my $thisfn='/'.&declutter(shift);
12369: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
12370: || $thisfn =~ m{^/adm/(includes|pages)} ) {
12371: $thisfn='/res'.$thisfn;
12372: }
12373: if ($thisfn !~m|^/adm|) {
12374: if ($thisfn =~ m|^/ext/|) {
12375: $thisfn='/adm/wrapper'.$thisfn;
12376: } else {
12377: my ($ext) = ($thisfn =~ /\.(\w+)$/);
12378: my $embstyle=&Apache::loncommon::fileembstyle($ext);
12379: if ($embstyle eq 'ssi'
12380: || ($embstyle eq 'hdn')
12381: || ($embstyle eq 'rat')
12382: || ($embstyle eq 'prv')
12383: || ($embstyle eq 'ign')) {
12384: #do nothing with these
12385: } elsif (($embstyle eq 'img')
12386: || ($embstyle eq 'emb')
12387: || ($embstyle eq 'wrp')) {
12388: $thisfn='/adm/wrapper'.$thisfn;
12389: } elsif ($embstyle eq 'unk'
12390: && $thisfn!~/\.(sequence|page)$/) {
12391: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
12392: } else {
12393: # &logthis("Got a blank emb style");
12394: }
12395: }
12396: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/exttools?$}) {
12397: $thisfn='/adm/wrapper'.$thisfn;
12398: }
12399: return $thisfn;
12400: }
12401:
12402: sub clutter_with_no_wrapper {
12403: my $uri = &clutter(shift);
12404: if ($uri =~ m-^/adm/-) {
12405: $uri =~ s-^/adm/wrapper/-/-;
12406: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
12407: }
12408: return $uri;
12409: }
12410:
12411: sub freeze_escape {
12412: my ($value)=@_;
12413: if (ref($value)) {
12414: $value=&nfreeze($value);
12415: return '__FROZEN__'.&escape($value);
12416: }
12417: return &escape($value);
12418: }
12419:
12420:
12421: sub thaw_unescape {
12422: my ($value)=@_;
12423: if ($value =~ /^__FROZEN__/) {
12424: substr($value,0,10,undef);
12425: $value=&unescape($value);
12426: return &thaw($value);
12427: }
12428: return &unescape($value);
12429: }
12430:
12431: sub correct_line_ends {
12432: my ($result)=@_;
12433: $$result =~s/\r\n/\n/mg;
12434: $$result =~s/\r/\n/mg;
12435: }
12436: # ================================================================ Main Program
12437:
12438: sub goodbye {
12439: &logthis("Starting Shut down");
12440: #not converted to using infrastruture and probably shouldn't be
12441: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
12442: #converted
12443: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
12444: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
12445: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
12446: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
12447: #1.1 only
12448: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
12449: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
12450: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
12451: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
12452: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
12453: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
12454: &logthis(sprintf("%-20s is %s",'hits',$hits));
12455: &flushcourselogs();
12456: &logthis("Shutting down");
12457: }
12458:
12459: sub get_dns {
12460: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
12461: if (!$ignore_cache) {
12462: my ($content,$cached)=
12463: &Apache::lonnet::is_cached_new('dns',$url);
12464: if ($cached) {
12465: &$func($content,$hashref);
12466: return;
12467: }
12468: }
12469:
12470: my %alldns;
12471: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12472: foreach my $dns (<$config>) {
12473: next if ($dns !~ /^\^(\S*)/x);
12474: my $line = $1;
12475: my ($host,$protocol) = split(/:/,$line);
12476: if ($protocol ne 'https') {
12477: $protocol = 'http';
12478: }
12479: $alldns{$host} = $protocol;
12480: }
12481: while (%alldns) {
12482: my ($dns) = sort { $b cmp $a } keys(%alldns);
12483: my $ua=new LWP::UserAgent;
12484: $ua->timeout(30);
12485: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
12486: my $response=$ua->request($request);
12487: delete($alldns{$dns});
12488: next if ($response->is_error());
12489: my @content = split("\n",$response->content);
12490: unless ($nocache) {
12491: &do_cache_new('dns',$url,\@content,30*24*60*60);
12492: }
12493: &$func(\@content,$hashref);
12494: return;
12495: }
12496: close($config);
12497: my $which = (split('/',$url))[3];
12498: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
12499: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
12500: my @content = <$config>;
12501: &$func(\@content,$hashref);
12502: return;
12503: }
12504:
12505: # ------------------------------------------------------Get DNS checksums file
12506: sub parse_dns_checksums_tab {
12507: my ($lines,$hashref) = @_;
12508: my $lonhost = $perlvar{'lonHostID'};
12509: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
12510: my $loncaparev = &get_server_loncaparev($machine_dom);
12511: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
12512: my $webconfdir = '/etc/httpd/conf';
12513: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
12514: $webconfdir = '/etc/apache2';
12515: } elsif ($distro =~ /^sles(\d+)$/) {
12516: if ($1 >= 10) {
12517: $webconfdir = '/etc/apache2';
12518: }
12519: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
12520: if ($1 >= 10.0) {
12521: $webconfdir = '/etc/apache2';
12522: }
12523: }
12524: my ($release,$timestamp) = split(/\-/,$loncaparev);
12525: my (%chksum,%revnum);
12526: if (ref($lines) eq 'ARRAY') {
12527: chomp(@{$lines});
12528: my $version = shift(@{$lines});
12529: if ($version eq $release) {
12530: foreach my $line (@{$lines}) {
12531: my ($file,$version,$shasum) = split(/,/,$line);
12532: if ($file =~ m{^/etc/httpd/conf}) {
12533: if ($webconfdir eq '/etc/apache2') {
12534: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
12535: }
12536: }
12537: $chksum{$file} = $shasum;
12538: $revnum{$file} = $version;
12539: }
12540: if (ref($hashref) eq 'HASH') {
12541: %{$hashref} = (
12542: sums => \%chksum,
12543: versions => \%revnum,
12544: );
12545: }
12546: }
12547: }
12548: return;
12549: }
12550:
12551: sub fetch_dns_checksums {
12552: my %checksums;
12553: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
12554: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
12555: my ($release,$timestamp) = split(/\-/,$loncaparev);
12556: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
12557: \%checksums);
12558: return \%checksums;
12559: }
12560:
12561: # ------------------------------------------------------------ Read domain file
12562: {
12563: my $loaded;
12564: my %domain;
12565:
12566: sub parse_domain_tab {
12567: my ($lines) = @_;
12568: foreach my $line (@$lines) {
12569: next if ($line =~ /^(\#|\s*$ )/x);
12570:
12571: chomp($line);
12572: my ($name,@elements) = split(/:/,$line,9);
12573: my %this_domain;
12574: foreach my $field ('description', 'auth_def', 'auth_arg_def',
12575: 'lang_def', 'city', 'longi', 'lati',
12576: 'primary') {
12577: $this_domain{$field} = shift(@elements);
12578: }
12579: $domain{$name} = \%this_domain;
12580: }
12581: }
12582:
12583: sub reset_domain_info {
12584: undef($loaded);
12585: undef(%domain);
12586: }
12587:
12588: sub load_domain_tab {
12589: my ($ignore_cache,$nocache) = @_;
12590: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
12591: my $fh;
12592: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
12593: my @lines = <$fh>;
12594: &parse_domain_tab(\@lines);
12595: }
12596: close($fh);
12597: $loaded = 1;
12598: }
12599:
12600: sub domain {
12601: &load_domain_tab() if (!$loaded);
12602:
12603: my ($name,$what) = @_;
12604: return if ( !exists($domain{$name}) );
12605:
12606: if (!$what) {
12607: return $domain{$name}{'description'};
12608: }
12609: return $domain{$name}{$what};
12610: }
12611:
12612: sub domain_info {
12613: &load_domain_tab() if (!$loaded);
12614: return %domain;
12615: }
12616:
12617: }
12618:
12619:
12620: # ------------------------------------------------------------- Read hosts file
12621: {
12622: my %hostname;
12623: my %hostdom;
12624: my %libserv;
12625: my $loaded;
12626: my %name_to_host;
12627: my %internetdom;
12628: my %LC_dns_serv;
12629:
12630: sub parse_hosts_tab {
12631: my ($file) = @_;
12632: foreach my $configline (@$file) {
12633: next if ($configline =~ /^(\#|\s*$ )/x);
12634: chomp($configline);
12635: if ($configline =~ /^\^/) {
12636: if ($configline =~ /^\^([\w.\-]+)/) {
12637: $LC_dns_serv{$1} = 1;
12638: }
12639: next;
12640: }
12641: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
12642: $name=~s/\s//g;
12643: if ($id && $domain && $role && $name) {
12644: $hostname{$id}=$name;
12645: push(@{$name_to_host{$name}}, $id);
12646: $hostdom{$id}=$domain;
12647: if ($role eq 'library') { $libserv{$id}=$name; }
12648: if (defined($protocol)) {
12649: if ($protocol eq 'https') {
12650: $protocol{$id} = $protocol;
12651: } else {
12652: $protocol{$id} = 'http';
12653: }
12654: } else {
12655: $protocol{$id} = 'http';
12656: }
12657: if (defined($intdom)) {
12658: $internetdom{$id} = $intdom;
12659: }
12660: }
12661: }
12662: }
12663:
12664: sub reset_hosts_info {
12665: &purge_remembered();
12666: &reset_domain_info();
12667: &reset_hosts_ip_info();
12668: undef(%name_to_host);
12669: undef(%hostname);
12670: undef(%hostdom);
12671: undef(%libserv);
12672: undef($loaded);
12673: }
12674:
12675: sub load_hosts_tab {
12676: my ($ignore_cache,$nocache) = @_;
12677: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
12678: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12679: my @config = <$config>;
12680: &parse_hosts_tab(\@config);
12681: close($config);
12682: $loaded=1;
12683: }
12684:
12685: sub hostname {
12686: &load_hosts_tab() if (!$loaded);
12687:
12688: my ($lonid) = @_;
12689: return $hostname{$lonid};
12690: }
12691:
12692: sub all_hostnames {
12693: &load_hosts_tab() if (!$loaded);
12694:
12695: return %hostname;
12696: }
12697:
12698: sub all_names {
12699: my ($ignore_cache,$nocache) = @_;
12700: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
12701:
12702: return %name_to_host;
12703: }
12704:
12705: sub all_host_domain {
12706: &load_hosts_tab() if (!$loaded);
12707: return %hostdom;
12708: }
12709:
12710: sub is_library {
12711: &load_hosts_tab() if (!$loaded);
12712:
12713: return exists($libserv{$_[0]});
12714: }
12715:
12716: sub all_library {
12717: &load_hosts_tab() if (!$loaded);
12718:
12719: return %libserv;
12720: }
12721:
12722: sub unique_library {
12723: #2x reverse removes all hostnames that appear more than once
12724: my %unique = reverse &all_library();
12725: return reverse %unique;
12726: }
12727:
12728: sub get_servers {
12729: &load_hosts_tab() if (!$loaded);
12730:
12731: my ($domain,$type) = @_;
12732: my %possible_hosts = ($type eq 'library') ? %libserv
12733: : %hostname;
12734: my %result;
12735: if (ref($domain) eq 'ARRAY') {
12736: while ( my ($host,$hostname) = each(%possible_hosts)) {
12737: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
12738: $result{$host} = $hostname;
12739: }
12740: }
12741: } else {
12742: while ( my ($host,$hostname) = each(%possible_hosts)) {
12743: if ($hostdom{$host} eq $domain) {
12744: $result{$host} = $hostname;
12745: }
12746: }
12747: }
12748: return %result;
12749: }
12750:
12751: sub get_unique_servers {
12752: my %unique = reverse &get_servers(@_);
12753: return reverse %unique;
12754: }
12755:
12756: sub host_domain {
12757: &load_hosts_tab() if (!$loaded);
12758:
12759: my ($lonid) = @_;
12760: return $hostdom{$lonid};
12761: }
12762:
12763: sub all_domains {
12764: &load_hosts_tab() if (!$loaded);
12765:
12766: my %seen;
12767: my @uniq = grep(!$seen{$_}++, values(%hostdom));
12768: return @uniq;
12769: }
12770:
12771: sub internet_dom {
12772: &load_hosts_tab() if (!$loaded);
12773:
12774: my ($lonid) = @_;
12775: return $internetdom{$lonid};
12776: }
12777:
12778: sub is_LC_dns {
12779: &load_hosts_tab() if (!$loaded);
12780:
12781: my ($hostname) = @_;
12782: return exists($LC_dns_serv{$hostname});
12783: }
12784:
12785: }
12786:
12787: {
12788: my %iphost;
12789: my %name_to_ip;
12790: my %lonid_to_ip;
12791:
12792: sub get_hosts_from_ip {
12793: my ($ip) = @_;
12794: my %iphosts = &get_iphost();
12795: if (ref($iphosts{$ip})) {
12796: return @{$iphosts{$ip}};
12797: }
12798: return;
12799: }
12800:
12801: sub reset_hosts_ip_info {
12802: undef(%iphost);
12803: undef(%name_to_ip);
12804: undef(%lonid_to_ip);
12805: }
12806:
12807: sub get_host_ip {
12808: my ($lonid) = @_;
12809: if (exists($lonid_to_ip{$lonid})) {
12810: return $lonid_to_ip{$lonid};
12811: }
12812: my $name=&hostname($lonid);
12813: my $ip = gethostbyname($name);
12814: return if (!$ip || length($ip) ne 4);
12815: $ip=inet_ntoa($ip);
12816: $name_to_ip{$name} = $ip;
12817: $lonid_to_ip{$lonid} = $ip;
12818: return $ip;
12819: }
12820:
12821: sub get_iphost {
12822: my ($ignore_cache,$nocache) = @_;
12823:
12824: if (!$ignore_cache) {
12825: if (%iphost) {
12826: return %iphost;
12827: }
12828: my ($ip_info,$cached)=
12829: &Apache::lonnet::is_cached_new('iphost','iphost');
12830: if ($cached) {
12831: %iphost = %{$ip_info->[0]};
12832: %name_to_ip = %{$ip_info->[1]};
12833: %lonid_to_ip = %{$ip_info->[2]};
12834: return %iphost;
12835: }
12836: }
12837:
12838: # get yesterday's info for fallback
12839: my %old_name_to_ip;
12840: my ($ip_info,$cached)=
12841: &Apache::lonnet::is_cached_new('iphost','iphost');
12842: if ($cached) {
12843: %old_name_to_ip = %{$ip_info->[1]};
12844: }
12845:
12846: my %name_to_host = &all_names($ignore_cache,$nocache);
12847: foreach my $name (keys(%name_to_host)) {
12848: my $ip;
12849: if (!exists($name_to_ip{$name})) {
12850: $ip = gethostbyname($name);
12851: if (!$ip || length($ip) ne 4) {
12852: if (defined($old_name_to_ip{$name})) {
12853: $ip = $old_name_to_ip{$name};
12854: &logthis("Can't find $name defaulting to old $ip");
12855: } else {
12856: &logthis("Name $name no IP found");
12857: next;
12858: }
12859: } else {
12860: $ip=inet_ntoa($ip);
12861: }
12862: $name_to_ip{$name} = $ip;
12863: } else {
12864: $ip = $name_to_ip{$name};
12865: }
12866: foreach my $id (@{ $name_to_host{$name} }) {
12867: $lonid_to_ip{$id} = $ip;
12868: }
12869: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12870: }
12871: unless ($nocache) {
12872: &do_cache_new('iphost','iphost',
12873: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12874: 48*60*60);
12875: }
12876:
12877: return %iphost;
12878: }
12879:
12880: #
12881: # Given a DNS returns the loncapa host name for that DNS
12882: #
12883: sub host_from_dns {
12884: my ($dns) = @_;
12885: my @hosts;
12886: my $ip;
12887:
12888: if (exists($name_to_ip{$dns})) {
12889: $ip = $name_to_ip{$dns};
12890: }
12891: if (!$ip) {
12892: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12893: if (length($ip) == 4) {
12894: $ip = &IO::Socket::inet_ntoa($ip);
12895: }
12896: }
12897: if ($ip) {
12898: @hosts = get_hosts_from_ip($ip);
12899: return $hosts[0];
12900: }
12901: return undef;
12902: }
12903:
12904: sub get_internet_names {
12905: my ($lonid) = @_;
12906: return if ($lonid eq '');
12907: my ($idnref,$cached)=
12908: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12909: if ($cached) {
12910: return $idnref;
12911: }
12912: my $ip = &get_host_ip($lonid);
12913: my @hosts = &get_hosts_from_ip($ip);
12914: my %iphost = &get_iphost();
12915: my (@idns,%seen);
12916: foreach my $id (@hosts) {
12917: my $dom = &host_domain($id);
12918: my $prim_id = &domain($dom,'primary');
12919: my $prim_ip = &get_host_ip($prim_id);
12920: next if ($seen{$prim_ip});
12921: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12922: foreach my $id (@{$iphost{$prim_ip}}) {
12923: my $intdom = &internet_dom($id);
12924: unless (grep(/^\Q$intdom\E$/,@idns)) {
12925: push(@idns,$intdom);
12926: }
12927: }
12928: }
12929: $seen{$prim_ip} = 1;
12930: }
12931: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12932: }
12933:
12934: }
12935:
12936: sub all_loncaparevs {
12937: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
12938: }
12939:
12940: # ---------------------------------------------------------- Read loncaparev table
12941: {
12942: sub load_loncaparevs {
12943: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12944: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12945: while (my $configline=<$config>) {
12946: chomp($configline);
12947: my ($hostid,$loncaparev)=split(/:/,$configline);
12948: $loncaparevs{$hostid}=$loncaparev;
12949: }
12950: close($config);
12951: }
12952: }
12953: }
12954: }
12955:
12956: # ---------------------------------------------------------- Read serverhostID table
12957: {
12958: sub load_serverhomeIDs {
12959: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12960: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12961: while (my $configline=<$config>) {
12962: chomp($configline);
12963: my ($name,$id)=split(/:/,$configline);
12964: $serverhomeIDs{$name}=$id;
12965: }
12966: close($config);
12967: }
12968: }
12969: }
12970: }
12971:
12972:
12973: BEGIN {
12974:
12975: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12976: unless ($readit) {
12977: {
12978: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12979: %perlvar = (%perlvar,%{$configvars});
12980: }
12981:
12982:
12983: # ------------------------------------------------------ Read spare server file
12984: {
12985: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12986:
12987: while (my $configline=<$config>) {
12988: chomp($configline);
12989: if ($configline) {
12990: my ($host,$type) = split(':',$configline,2);
12991: if (!defined($type) || $type eq '') { $type = 'default' };
12992: push(@{ $spareid{$type} }, $host);
12993: }
12994: }
12995: close($config);
12996: }
12997: # ------------------------------------------------------------ Read permissions
12998: {
12999: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
13000:
13001: while (my $configline=<$config>) {
13002: chomp($configline);
13003: if ($configline) {
13004: my ($role,$perm)=split(/ /,$configline);
13005: if ($perm ne '') { $pr{$role}=$perm; }
13006: }
13007: }
13008: close($config);
13009: }
13010:
13011: # -------------------------------------------- Read plain texts for permissions
13012: {
13013: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
13014:
13015: while (my $configline=<$config>) {
13016: chomp($configline);
13017: if ($configline) {
13018: my ($short,@plain)=split(/:/,$configline);
13019: %{$prp{$short}} = ();
13020: if (@plain > 0) {
13021: $prp{$short}{'std'} = $plain[0];
13022: for (my $i=1; $i<@plain; $i++) {
13023: $prp{$short}{'alt'.$i} = $plain[$i];
13024: }
13025: }
13026: }
13027: }
13028: close($config);
13029: }
13030:
13031: # ---------------------------------------------------------- Read package table
13032: {
13033: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
13034:
13035: while (my $configline=<$config>) {
13036: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
13037: chomp($configline);
13038: my ($short,$plain)=split(/:/,$configline);
13039: my ($pack,$name)=split(/\&/,$short);
13040: if ($plain ne '') {
13041: $packagetab{$pack.'&'.$name.'&name'}=$name;
13042: $packagetab{$short}=$plain;
13043: }
13044: }
13045: close($config);
13046: }
13047:
13048: # ---------------------------------------------------------- Read loncaparev table
13049:
13050: &load_loncaparevs();
13051:
13052: # ---------------------------------------------------------- Read serverhostID table
13053:
13054: &load_serverhomeIDs();
13055:
13056: # ---------------------------------------------------------- Read releaseslist XML
13057: {
13058: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
13059: if (-e $file) {
13060: my $parser = HTML::LCParser->new($file);
13061: while (my $token = $parser->get_token()) {
13062: if ($token->[0] eq 'S') {
13063: my $item = $token->[1];
13064: my $name = $token->[2]{'name'};
13065: my $value = $token->[2]{'value'};
13066: my $valuematch = $token->[2]{'valuematch'};
13067: if ($item ne '' && $name ne '' && ($value ne '' || $valuematch ne '')) {
13068: my $release = $parser->get_text();
13069: $release =~ s/(^\s*|\s*$ )//gx;
13070: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch} = $release;
13071: }
13072: }
13073: }
13074: }
13075: }
13076:
13077: # ---------------------------------------------------------- Read managers table
13078: {
13079: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
13080: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
13081: while (my $configline=<$config>) {
13082: chomp($configline);
13083: next if ($configline =~ /^\#/);
13084: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
13085: $managerstab{$configline} = 1;
13086: }
13087: }
13088: close($config);
13089: }
13090: }
13091: }
13092:
13093: # ------------- set up temporary directory
13094: {
13095: $tmpdir = LONCAPA::tempdir();
13096:
13097: }
13098:
13099: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
13100: 'compress_threshold'=> 20_000,
13101: });
13102:
13103: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
13104: $dumpcount=0;
13105: $locknum=0;
13106:
13107: &logtouch();
13108: &logthis('<font color="yellow">INFO: Read configuration</font>');
13109: $readit=1;
13110: {
13111: use integer;
13112: my $test=(2**32)+1;
13113: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
13114: &logthis(" Detected 64bit platform ($_64bit)");
13115: }
13116: }
13117: }
13118:
13119: 1;
13120: __END__
13121:
13122: =pod
13123:
13124: =head1 NAME
13125:
13126: Apache::lonnet - Subroutines to ask questions about things in the network.
13127:
13128: =head1 SYNOPSIS
13129:
13130: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
13131:
13132: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
13133:
13134: Common parameters:
13135:
13136: =over 4
13137:
13138: =item *
13139:
13140: $uname : an internal username (if $cname expecting a course Id specifically)
13141:
13142: =item *
13143:
13144: $udom : a domain (if $cdom expecting a course's domain specifically)
13145:
13146: =item *
13147:
13148: $symb : a resource instance identifier
13149:
13150: =item *
13151:
13152: $namespace : the name of a .db file that contains the data needed or
13153: being set.
13154:
13155: =back
13156:
13157: =head1 OVERVIEW
13158:
13159: lonnet provides subroutines which interact with the
13160: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
13161: about classes, users, and resources.
13162:
13163: For many of these objects you can also use this to store data about
13164: them or modify them in various ways.
13165:
13166: =head2 Symbs
13167:
13168: To identify a specific instance of a resource, LON-CAPA uses symbols
13169: or "symbs"X<symb>. These identifiers are built from the URL of the
13170: map, the resource number of the resource in the map, and the URL of
13171: the resource itself. The latter is somewhat redundant, but might help
13172: if maps change.
13173:
13174: An example is
13175:
13176: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
13177:
13178: The respective map entry is
13179:
13180: <resource id="19" src="/res/msu/korte/tests/part12.problem"
13181: title="Problem 2">
13182: </resource>
13183:
13184: Symbs are used by the random number generator, as well as to store and
13185: restore data specific to a certain instance of for example a problem.
13186:
13187: =head2 Storing And Retrieving Data
13188:
13189: X<store()>X<cstore()>X<restore()>Three of the most important functions
13190: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
13191: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
13192: is is the non-critical message twin of cstore. These functions are for
13193: handlers to store a perl hash to a user's permanent data space in an
13194: easy manner, and to retrieve it again on another call. It is expected
13195: that a handler would use this once at the beginning to retrieve data,
13196: and then again once at the end to send only the new data back.
13197:
13198: The data is stored in the user's data directory on the user's
13199: homeserver under the ID of the course.
13200:
13201: The hash that is returned by restore will have all of the previous
13202: value for all of the elements of the hash.
13203:
13204: Example:
13205:
13206: #creating a hash
13207: my %hash;
13208: $hash{'foo'}='bar';
13209:
13210: #storing it
13211: &Apache::lonnet::cstore(\%hash);
13212:
13213: #changing a value
13214: $hash{'foo'}='notbar';
13215:
13216: #adding a new value
13217: $hash{'bar'}='foo';
13218: &Apache::lonnet::cstore(\%hash);
13219:
13220: #retrieving the hash
13221: my %history=&Apache::lonnet::restore();
13222:
13223: #print the hash
13224: foreach my $key (sort(keys(%history))) {
13225: print("\%history{$key} = $history{$key}");
13226: }
13227:
13228: Will print out:
13229:
13230: %history{1:foo} = bar
13231: %history{1:keys} = foo:timestamp
13232: %history{1:timestamp} = 990455579
13233: %history{2:bar} = foo
13234: %history{2:foo} = notbar
13235: %history{2:keys} = foo:bar:timestamp
13236: %history{2:timestamp} = 990455580
13237: %history{bar} = foo
13238: %history{foo} = notbar
13239: %history{timestamp} = 990455580
13240: %history{version} = 2
13241:
13242: Note that the special hash entries C<keys>, C<version> and
13243: C<timestamp> were added to the hash. C<version> will be equal to the
13244: total number of versions of the data that have been stored. The
13245: C<timestamp> attribute will be the UNIX time the hash was
13246: stored. C<keys> is available in every historical section to list which
13247: keys were added or changed at a specific historical revision of a
13248: hash.
13249:
13250: B<Warning>: do not store the hash that restore returns directly. This
13251: will cause a mess since it will restore the historical keys as if the
13252: were new keys. I.E. 1:foo will become 1:1:foo etc.
13253:
13254: Calling convention:
13255:
13256: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
13257: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
13258:
13259: For more detailed information, see lonnet specific documentation.
13260:
13261: =head1 RETURN MESSAGES
13262:
13263: =over 4
13264:
13265: =item * B<con_lost>: unable to contact remote host
13266:
13267: =item * B<con_delayed>: unable to contact remote host, message will be delivered
13268: when the connection is brought back up
13269:
13270: =item * B<con_failed>: unable to contact remote host and unable to save message
13271: for later delivery
13272:
13273: =item * B<error:>: an error a occurred, a description of the error follows the :
13274:
13275: =item * B<no_such_host>: unable to fund a host associated with the user/domain
13276: that was requested
13277:
13278: =back
13279:
13280: =head1 PUBLIC SUBROUTINES
13281:
13282: =head2 Session Environment Functions
13283:
13284: =over 4
13285:
13286: =item *
13287: X<appenv()>
13288: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
13289: the user envirnoment file, and will be restored for each access this
13290: user makes during this session, also modifies the %env for the current
13291: process. Optional rolesarrayref - if defined contains a reference to an array
13292: of roles which are exempt from the restriction on modifying user.role entries
13293: in the user's environment.db and in %env.
13294:
13295: =item *
13296: X<delenv()>
13297: B<delenv($delthis,$regexp)>: removes all items from the session
13298: environment file that begin with $delthis. If the
13299: optional second arg - $regexp - is true, $delthis is treated as a
13300: regular expression, otherwise \Q$delthis\E is used.
13301: The values are also deleted from the current processes %env.
13302:
13303: =item * get_env_multiple($name)
13304:
13305: gets $name from the %env hash, it seemlessly handles the cases where multiple
13306: values may be defined and end up as an array ref.
13307:
13308: returns an array of values
13309:
13310: =back
13311:
13312: =head2 User Information
13313:
13314: =over 4
13315:
13316: =item *
13317: X<queryauthenticate()>
13318: B<queryauthenticate($uname,$udom)>: try to determine user's current
13319: authentication scheme
13320:
13321: =item *
13322: X<authenticate()>
13323: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
13324: authenticate user from domain's lib servers (first use the current
13325: one). C<$upass> should be the users password.
13326: $checkdefauth is optional (value is 1 if a check should be made to
13327: authenticate user using default authentication method, and allow
13328: account creation if username does not have account in the domain).
13329: $clientcancheckhost is optional (value is 1 if checking whether the
13330: server can host will occur on the client side in lonauth.pm).
13331:
13332: =item *
13333: X<homeserver()>
13334: B<homeserver($uname,$udom)>: find the server which has
13335: the user's directory and files (there must be only one), this caches
13336: the answer, and also caches if there is a borken connection.
13337:
13338: =item *
13339: X<idget()>
13340: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
13341: a list of student/employee IDs or clicker IDs
13342: (student/employee IDs are a unique resource in a domain, there must be
13343: only 1 ID per username, and only 1 username per ID in a specific domain).
13344: clickerIDs are not necessarily unique, as students might share clickers.
13345: (returns hash: id=>name,id=>name)
13346:
13347: =item *
13348: X<idrget()>
13349: B<idrget($udom,@unames)>: find the IDs behind a list of
13350: usernames (returns hash: name=>id,name=>id)
13351:
13352: =item *
13353: X<idput()>
13354: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
13355: names and associated student/employee IDs or clicker IDs.
13356:
13357: =item *
13358: X<iddel()>
13359: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
13360: student/employee ID or clicker ID username look-ups from domain.
13361: The homeserver ($uhome) and namespace ($namespace) are optional.
13362: If no $uhome is provided, it will be determined usig &homeserver()
13363: for each user. If no $namespace is provided, the default is ids.
13364:
13365: =item *
13366: X<updateclickers()>
13367: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
13368: clicker ID-to-username look-ups in clickers.db on library server.
13369: Permitted actions are add or del (i.e., add or delete). The
13370: clickers.db contains clickerID as keys (escaped), and each corresponding
13371: value is an escaped comma-separated list of usernames (for whom the
13372: library server is the homeserver), who registered that particular ID.
13373: If $critical is true, the update will be sent via &critical, otherwise
13374: &reply() will be used.
13375:
13376: =item *
13377: X<rolesinit()>
13378: B<rolesinit($udom,$username)>: get user privileges.
13379: returns user role, first access and timer interval hashes
13380:
13381: =item *
13382: X<privileged()>
13383: B<privileged($username,$domain)>: returns a true if user has a
13384: privileged and active role (i.e. su or dc), false otherwise.
13385:
13386: =item *
13387: X<getsection()>
13388: B<getsection($udom,$uname,$cname)>: finds the section of student in the
13389: course $cname, return section name/number or '' for "not in course"
13390: and '-1' for "no section"
13391:
13392: =item *
13393: X<userenvironment()>
13394: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
13395: passed in @what from the requested user's environment, returns a hash
13396:
13397: =item *
13398: X<userlog_query()>
13399: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
13400: activity.log file. %filters defines filters applied when parsing the
13401: log file. These can be start or end timestamps, or the type of action
13402: - log to look for Login or Logout events, check for Checkin or
13403: Checkout, role for role selection. The response is in the form
13404: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
13405: escaped strings of the action recorded in the activity.log file.
13406:
13407: =back
13408:
13409: =head2 User Roles
13410:
13411: =over 4
13412:
13413: =item *
13414:
13415: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
13416: returns codes for allowed actions.
13417:
13418: The first argument is required, all others are optional.
13419:
13420: $priv is the privilege being checked.
13421: $uri contains additional information about what is being checked for access (e.g.,
13422: URL, course ID etc.).
13423: $symb is the unique resource instance identifier in a course; if needed,
13424: but not provided, it will be retrieved via a call to &symbread().
13425: $role is the role for which a priv is being checked (only used if priv is evb).
13426: $clientip is the user's IP address (only used when checking for access to portfolio
13427: files).
13428: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
13429: prevents recursive calls to &allowed.
13430:
13431: F: full access
13432: U,I,K: authentication modes (cxx only)
13433: '': forbidden
13434: 1: user needs to choose course
13435: 2: browse allowed
13436: A: passphrase authentication needed
13437: B: access temporarily blocked because of a blocking event in a course.
13438:
13439: =item *
13440:
13441: constructaccess($url,$setpriv) : check for access to construction space URL
13442:
13443: See if the owner domain and name in the URL match those in the
13444: expected environment. If so, return three element list
13445: ($ownername,$ownerdomain,$ownerhome).
13446:
13447: Otherwise return the null string.
13448:
13449: If second argument 'setpriv' is true, it assigns the privileges,
13450: and returns the same three element list, unless the owner has
13451: blocked "ad hoc" Domain Coordinator access to the Author Space,
13452: in which case the null string is returned.
13453:
13454: =item *
13455:
13456: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
13457: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
13458: and course level
13459:
13460: =item *
13461:
13462: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
13463: (rolesplain.tab); plain text explanation of a user role term.
13464: $type is Course (default) or Community.
13465: If $forcedefault evaluates to true, text returned will be default
13466: text for $type. Otherwise, if this is a course, the text returned
13467: will be a custom name for the role (if defined in the course's
13468: environment). If no custom name is defined the default is returned.
13469:
13470: =item *
13471:
13472: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
13473: All arguments are optional. Returns a hash of a roles, either for
13474: co-author/assistant author roles for a user's Construction Space
13475: (default), or if $context is 'userroles', roles for the user himself,
13476: In the hash, keys are set to colon-separated $uname,$udom,$role, and
13477: (optionally) if $withsec is true, a fourth colon-separated item - $section.
13478: For each key, value is set to colon-separated start and end times for
13479: the role. If no username and domain are specified, will default to
13480: current user/domain. Types, roles, and roledoms are references to arrays
13481: of role statuses (active, future or previous), roles
13482: (e.g., cc,in, st etc.) and domains of the roles which can be used
13483: to restrict the list of roles reported. If no array ref is
13484: provided for types, will default to return only active roles.
13485:
13486: =item *
13487:
13488: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
13489: user: $uname:$udom has a role in the course: $cdom_$cnum.
13490:
13491: Additional optional arguments are: $type (if role checking is to be restricted
13492: to certain user status types -- previous (expired roles), active (currently
13493: available roles) or future (roles available in the future), and
13494: $hideprivileged -- if true will not report course roles for users who
13495: have active Domain Coordinator role in course's domain or in additional
13496: domains (specified in 'Domains to check for privileged users' in course
13497: environment -- set via: Course Settings -> Classlists and staff listing).
13498:
13499: =item *
13500:
13501: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
13502: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
13503: $possdomains and $possroles are optional array refs -- to domains to check and
13504: roles to check. If $possdomains is not specified, a dump will be done of the
13505: users' roles.db to check for a dc or su role in any domain. This can be
13506: time consuming if &privileged is called repeatedly (e.g., when displaying a
13507: classlist), so in such cases, supplying a $possdomains array is preferred, as
13508: this then allows &privileged_by_domain() to be used, which caches the identity
13509: of privileged users, eliminating the need for repeated calls to &dump().
13510:
13511: =item *
13512:
13513: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
13514: where the outer hash keys are domains specified in the $possdomains array ref,
13515: next inner hash keys are privileged roles specified in the $roles array ref,
13516: and the innermost hash contains key = value pairs for username:domain = end:start
13517: for active or future "privileged" users with that role in that domain. To avoid
13518: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
13519: innerhash are cached using priv_$role and $dom as the identifiers.
13520:
13521: =back
13522:
13523: =head2 User Modification
13524:
13525: =over 4
13526:
13527: =item *
13528:
13529: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
13530: user for the level given by URL. Optional start and end dates (leave empty
13531: string or zero for "no date")
13532:
13533: =item *
13534:
13535: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
13536: change a users, password, possible return values are: ok,
13537: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
13538: refused
13539:
13540: =item *
13541:
13542: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
13543:
13544: =item *
13545:
13546: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
13547: $forceid,$desiredhome,$email,$inststatus,$candelete) :
13548:
13549: will update user information (firstname,middlename,lastname,generation,
13550: permanentemail), and if forceid is true, student/employee ID also.
13551: A user's institutional affiliation(s) can also be updated.
13552: User information fields will not be overwritten with empty entries
13553: unless the field is included in the $candelete array reference.
13554: This array is included when a single user is modified via "Manage Users",
13555: or when Autoupdate.pl is run by cron in a domain.
13556:
13557: =item *
13558:
13559: modifystudent
13560:
13561: modify a student's enrollment and identification information.
13562: The course id is resolved based on the current user's environment.
13563: This means the invoking user must be a course coordinator or otherwise
13564: associated with a course.
13565:
13566: This call is essentially a wrapper for lonnet::modifyuser and
13567: lonnet::modify_student_enrollment
13568:
13569: Inputs:
13570:
13571: =over 4
13572:
13573: =item B<$udom> Student's loncapa domain
13574:
13575: =item B<$uname> Student's loncapa login name
13576:
13577: =item B<$uid> Student/Employee ID
13578:
13579: =item B<$umode> Student's authentication mode
13580:
13581: =item B<$upass> Student's password
13582:
13583: =item B<$first> Student's first name
13584:
13585: =item B<$middle> Student's middle name
13586:
13587: =item B<$last> Student's last name
13588:
13589: =item B<$gene> Student's generation
13590:
13591: =item B<$usec> Student's section in course
13592:
13593: =item B<$end> Unix time of the roles expiration
13594:
13595: =item B<$start> Unix time of the roles start date
13596:
13597: =item B<$forceid> If defined, allow $uid to be changed
13598:
13599: =item B<$desiredhome> server to use as home server for student
13600:
13601: =item B<$email> Student's permanent e-mail address
13602:
13603: =item B<$type> Type of enrollment (auto or manual)
13604:
13605: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
13606:
13607: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
13608:
13609: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
13610:
13611: =item B<$context> role change context (shown in User Management Logs display in a course)
13612:
13613: =item B<$inststatus> institutional status of user - : separated string of escaped status types
13614:
13615: =item B<$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.
13616:
13617: =back
13618:
13619: =item *
13620:
13621: modify_student_enrollment
13622:
13623: Change a student's enrollment status in a class. The environment variable
13624: 'role.request.course' must be defined for this function to proceed.
13625:
13626: Inputs:
13627:
13628: =over 4
13629:
13630: =item $udom, student's domain
13631:
13632: =item $uname, student's name
13633:
13634: =item $uid, student's user id
13635:
13636: =item $first, student's first name
13637:
13638: =item $middle
13639:
13640: =item $last
13641:
13642: =item $gene
13643:
13644: =item $usec
13645:
13646: =item $end
13647:
13648: =item $start
13649:
13650: =item $type
13651:
13652: =item $locktype
13653:
13654: =item $cid
13655:
13656: =item $selfenroll
13657:
13658: =item $context
13659:
13660: =item $credits, number of credits student will earn from this class
13661:
13662: =back
13663:
13664:
13665: =item *
13666:
13667: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
13668: custom role; give a custom role to a user for the level given by URL. Specify
13669: name and domain of role author, and role name
13670:
13671: =item *
13672:
13673: revokerole($udom,$uname,$url,$role) : revoke a role for url
13674:
13675: =item *
13676:
13677: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
13678:
13679: =back
13680:
13681: =head2 Course Infomation
13682:
13683: =over 4
13684:
13685: =item *
13686:
13687: coursedescription($courseid,$options) : returns a hash of information about the
13688: specified course id, including all environment settings for the
13689: course, the description of the course will be in the hash under the
13690: key 'description'
13691:
13692: $options is an optional parameter that if supplied is a hash reference that controls
13693: what how this function works. It has the following key/values:
13694:
13695: =over 4
13696:
13697: =item freshen_cache
13698:
13699: If defined, and the environment cache for the course is valid, it is
13700: returned in the returned hash.
13701:
13702: =item one_time
13703:
13704: If defined, the last cache time is set to _now_
13705:
13706: =item user
13707:
13708: If defined, the supplied username is used instead of the current user.
13709:
13710:
13711: =back
13712:
13713: =item *
13714:
13715: resdata($name,$domain,$type,@which) : request for current parameter
13716: setting for a specific $type, where $type is either 'course' or 'user',
13717: @what should be a list of parameters to ask about. This routine caches
13718: answers for 10 minutes.
13719:
13720: =item *
13721:
13722: get_courseresdata($courseid, $domain) : dump the entire course resource
13723: data base, returning a hash that is keyed by the resource name and has
13724: values that are the resource value. I believe that the timestamps and
13725: versions are also returned.
13726:
13727: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
13728: supplemental content area. This routine caches the number of files for
13729: 10 minutes.
13730:
13731: =back
13732:
13733: =head2 Course Modification
13734:
13735: =over 4
13736:
13737: =item *
13738:
13739: writecoursepref($courseid,%prefs) : write preferences (environment
13740: database) for a course
13741:
13742: =item *
13743:
13744: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
13745:
13746: =item *
13747:
13748: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
13749:
13750: =item *
13751:
13752: is_course($courseid), is_course($cdom, $cnum)
13753:
13754: Accepts either a combined $courseid (in the form of domain_courseid) or the
13755: two component version $cdom, $cnum. It checks if the specified course exists.
13756:
13757: Returns:
13758: undef if the course doesn't exist, otherwise
13759: in scalar context the combined courseid.
13760: in list context the two components of the course identifier, domain and
13761: courseid.
13762:
13763: =back
13764:
13765: =head2 Resource Subroutines
13766:
13767: =over 4
13768:
13769: =item *
13770:
13771: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
13772:
13773: =item *
13774:
13775: repcopy($filename) : subscribes to the requested file, and attempts to
13776: replicate from the owning library server, Might return
13777: 'unavailable', 'not_found', 'forbidden', 'ok', or
13778: 'bad_request', also attempts to grab the metadata for the
13779: resource. Expects the local filesystem pathname
13780: (/home/httpd/html/res/....)
13781:
13782: =back
13783:
13784: =head2 Resource Information
13785:
13786: =over 4
13787:
13788: =item *
13789:
13790: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
13791: and returns the value of a variety of different possible values,
13792: $varname should be a request string, and the other parameters can be
13793: used to specify who and what one is asking about. Ordinarily, $cid
13794: does not need to be specified, as it is retrived from
13795: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
13796: within lonuserstate::loadmap() when initializing a course, before
13797: $env{'request.course.id'} has been set, so it needs to be provided
13798: in that one case.
13799:
13800: Possible values for $varname are environment.lastname (or other item
13801: from the envirnment hash), user.name (or someother aspect about the
13802: user), resource.0.maxtries (or some other part and parameter of a
13803: resource)
13804:
13805: =item *
13806:
13807: directcondval($number) : get current value of a condition; reads from a state
13808: string
13809:
13810: =item *
13811:
13812: condval($condidx) : value of condition index based on state
13813:
13814: =item *
13815:
13816: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
13817: resource's metadata, $what should be either a specific key, or either
13818: 'keys' (to get a list of possible keys) or 'packages' to get a list of
13819: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
13820:
13821: this function automatically caches all requests
13822:
13823: =item *
13824:
13825: metadata_query($query,$custom,$customshow) : make a metadata query against the
13826: network of library servers; returns file handle of where SQL and regex results
13827: will be stored for query
13828:
13829: =item *
13830:
13831: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
13832: return symbolic list entry (all arguments optional).
13833:
13834: Args: filename is the filename (including path) for the file for which a symb
13835: is required; donotrecurse, if true will prevent calls to allowed() being made
13836: to check access status if more than one resource was found in the bighash
13837: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
13838: a randompick); ignorecachednull, if true will prevent a symb of '' being
13839: returned if $env{$cache_str} is defined as ''; checkforblock if true will
13840: cause possible symbs to be checked to determine if they are subject to content
13841: blocking, if so they will not be included as possible symbs; possibles is a
13842: ref to a hash, which, as a side effect, will be populated with all possible
13843: symbs (content blocking not tested).
13844:
13845: returns the data handle
13846:
13847: =item *
13848:
13849: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
13850: and is a possible symb for the URL in $thisfn, and if is an encrypted
13851: resource that the user accessed using /enc/ returns a 1 on success, 0
13852: on failure, user must be in a course, as it assumes the existence of
13853: the course initial hash, and uses $env('request.course.id'}. The third
13854: arg is an optional reference to a scalar. If this arg is passed in the
13855: call to symbverify, it will be set to 1 if the symb has been set to be
13856: encrypted; otherwise it will be null.
13857:
13858: =item *
13859:
13860: symbclean($symb) : removes versions numbers from a symb, returns the
13861: cleaned symb
13862:
13863: =item *
13864:
13865: is_on_map($uri) : checks if the $uri is somewhere on the current
13866: course map, user must be in a course for it to work.
13867:
13868: =item *
13869:
13870: numval($salt) : return random seed value (addend for rndseed)
13871:
13872: =item *
13873:
13874: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13875: a random seed, all arguments are optional, if they aren't sent it uses the
13876: environment to derive them. Note: if symb isn't sent and it can't get one
13877: from &symbread it will use the current time as its return value
13878:
13879: =item *
13880:
13881: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13882: unfakeable, receipt
13883:
13884: =item *
13885:
13886: receipt() : API to ireceipt working off of env values; given out to users
13887:
13888: =item *
13889:
13890: countacc($url) : count the number of accesses to a given URL
13891:
13892: =item *
13893:
13894: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13895:
13896: =item *
13897:
13898: checkin($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 $tcrsid)
13899:
13900: =item *
13901:
13902: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13903:
13904: =item *
13905:
13906: devalidate($symb) : devalidate temporary spreadsheet calculations,
13907: forcing spreadsheet to reevaluate the resource scores next time.
13908:
13909: =item *
13910:
13911: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13912: when viewing in course context.
13913:
13914: input: six args -- filename (decluttered), course number, course domain,
13915: url, symb (if registered) and group (if this is a
13916: group item -- e.g., bulletin board, group page etc.).
13917:
13918: output: array of five scalars --
13919: $cfile -- url for file editing if editable on current server
13920: $home -- homeserver of resource (i.e., for author if published,
13921: or course if uploaded.).
13922: $switchserver -- 1 if server switch will be needed.
13923: $forceedit -- 1 if icon/link should be to go to edit mode
13924: $forceview -- 1 if icon/link should be to go to view mode
13925:
13926: =item *
13927:
13928: is_course_upload($file,$cnum,$cdom)
13929:
13930: Used in course context to determine if current file was uploaded to
13931: the course (i.e., would be found in /userfiles/docs on the course's
13932: homeserver.
13933:
13934: input: 3 args -- filename (decluttered), course number and course domain.
13935: output: boolean -- 1 if file was uploaded.
13936:
13937: =back
13938:
13939: =head2 Storing/Retreiving Data
13940:
13941: =over 4
13942:
13943: =item *
13944:
13945: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
13946: permanently for this url; hashref needs to be given and should be a \%hashname;
13947: the remaining args aren't required and if they aren't passed or are '' they will
13948: be derived from the env (with the exception of $laststore, which is an
13949: optional arg used when a user's submission is stored in grading).
13950: $laststore is $version=$timestamp, where $version is the most recent version
13951: number retrieved for the corresponding $symb in the $namespace db file, and
13952: $timestamp is the timestamp for that transaction (UNIX time).
13953: $laststore is currently only passed when cstore() is called by
13954: structuretags::finalize_storage().
13955:
13956: =item *
13957:
13958: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
13959: but uses critical subroutine
13960:
13961: =item *
13962:
13963: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13964: all args are optional
13965:
13966: =item *
13967:
13968: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13969: dumps the complete (or key matching regexp) namespace into a hash
13970: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13971: normally &store()ed into
13972:
13973: $range should be either an integer '100' (give me the first 100
13974: matching records)
13975: or be two integers sperated by a - with no spaces
13976: '30-50' (give me the 30th through the 50th matching
13977: records)
13978:
13979:
13980: =item *
13981:
13982: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
13983: replaces a &store() version of data with a replacement set of data
13984: for a particular resource in a namespace passed in the $storehash hash
13985: reference. If $tolog is true, the transaction is logged in the courselog
13986: with an action=PUTSTORE.
13987:
13988: =item *
13989:
13990: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13991: works very similar to store/cstore, but all data is stored in a
13992: temporary location and can be reset using tmpreset, $storehash should
13993: be a hash reference, returns nothing on success
13994:
13995: =item *
13996:
13997: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13998: similar to restore, but all data is stored in a temporary location and
13999: can be reset using tmpreset. Returns a hash of values on success,
14000: error string otherwise.
14001:
14002: =item *
14003:
14004: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
14005: deltes all keys for $symb form the temporary storage hash.
14006:
14007: =item *
14008:
14009: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14010: reference filled in from namesp ($udom and $uname are optional)
14011:
14012: =item *
14013:
14014: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
14015: namesp ($udom and $uname are optional)
14016:
14017: =item *
14018:
14019: dump($namespace,$udom,$uname,$regexp,$range) :
14020: dumps the complete (or key matching regexp) namespace into a hash
14021: ($udom, $uname, $regexp, $range are optional)
14022:
14023: $range should be either an integer '100' (give me the first 100
14024: matching records)
14025: or be two integers sperated by a - with no spaces
14026: '30-50' (give me the 30th through the 50th matching
14027: records)
14028: =item *
14029:
14030: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
14031: $store can be a scalar, an array reference, or if the amount to be
14032: incremented is > 1, a hash reference.
14033:
14034: ($udom and $uname are optional)
14035:
14036: =item *
14037:
14038: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
14039: ($udom and $uname are optional)
14040:
14041: =item *
14042:
14043: cput($namespace,$storehash,$udom,$uname) : critical put
14044: ($udom and $uname are optional)
14045:
14046: =item *
14047:
14048: newput($namespace,$storehash,$udom,$uname) :
14049:
14050: Attempts to store the items in the $storehash, but only if they don't
14051: currently exist, if this succeeds you can be certain that you have
14052: successfully created a new key value pair in the $namespace db.
14053:
14054:
14055: Args:
14056: $namespace: name of database to store values to
14057: $storehash: hashref to store to the db
14058: $udom: (optional) domain of user containing the db
14059: $uname: (optional) name of user caontaining the db
14060:
14061: Returns:
14062: 'ok' -> succeeded in storing all keys of $storehash
14063: 'key_exists: <key>' -> failed to anything out of $storehash, as at
14064: least <key> already existed in the db (other
14065: requested keys may also already exist)
14066: 'error: <msg>' -> unable to tie the DB or other error occurred
14067: 'con_lost' -> unable to contact request server
14068: 'refused' -> action was not allowed by remote machine
14069:
14070:
14071: =item *
14072:
14073: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14074: reference filled in from namesp (encrypts the return communication)
14075: ($udom and $uname are optional)
14076:
14077: =item *
14078:
14079: log($udom,$name,$home,$message) : write to permanent log for user; use
14080: critical subroutine
14081:
14082: =item *
14083:
14084: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
14085: array reference filled in from namespace found in domain level on either
14086: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
14087:
14088: =item *
14089:
14090: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
14091: domain level either on specified domain server ($uhome) or primary domain
14092: server ($udom and $uhome are optional)
14093:
14094: =item *
14095:
14096: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
14097: for: authentication, language, quotas, timezone, date locale, and portal URL in
14098: the target domain.
14099:
14100: May also include additional key => value pairs for the following groups:
14101:
14102: =over
14103:
14104: =item
14105: disk quotas (MB allocated by default to portfolios and authoring spaces).
14106:
14107: =over
14108:
14109: =item defaultquota, authorquota
14110:
14111: =back
14112:
14113: =item
14114: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
14115: portfolio for users).
14116:
14117: =over
14118:
14119: =item
14120: aboutme, blog, webdav, portfolio
14121:
14122: =back
14123:
14124: =item
14125: requestcourses: ability to request courses, and how requests are processed.
14126:
14127: =over
14128:
14129: =item
14130: official, unofficial, community, textbook
14131:
14132: =back
14133:
14134: =item
14135: inststatus: types of institutional affiliation, and order in which they are displayed.
14136:
14137: =over
14138:
14139: =item
14140: inststatustypes, inststatusorder, inststatusguest
14141:
14142: =back
14143:
14144: =item
14145: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
14146: for course's uploaded content.
14147:
14148: =over
14149:
14150: =item
14151: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
14152: communityquota, textbookquota
14153:
14154: =back
14155:
14156: =item
14157: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
14158: on your servers.
14159:
14160: =over
14161:
14162: =item
14163: remotesessions, hostedsessions
14164:
14165: =back
14166:
14167: =back
14168:
14169: In cases where a domain coordinator has never used the "Set Domain Configuration"
14170: utility to create a configuration.db file on a domain's primary library server
14171: only the following domain defaults: auth_def, auth_arg_def, lang_def
14172: -- corresponding values are authentication type (internal, krb4, krb5,
14173: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
14174: will be available. Values are retrieved from cache (if current), unless the
14175: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
14176: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
14177:
14178: Typical usage:
14179:
14180: %domdefaults = &get_domain_defaults($target_domain);
14181:
14182: =back
14183:
14184: =head2 Network Status Functions
14185:
14186: =over 4
14187:
14188: =item *
14189:
14190: dirlist() : return directory list based on URI (first arg).
14191:
14192: Inputs: 1 required, 5 optional.
14193:
14194: =over
14195:
14196: =item
14197: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
14198:
14199: =item
14200: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
14201:
14202: =item
14203: $username - username of user/course to be listed. Extracted from $uri if absent.
14204:
14205: =item
14206: $getpropath - boolean: 1 if prepend path using &propath().
14207:
14208: =item
14209: $getuserdir - boolean: 1 if prepend path for "userfiles".
14210:
14211: =item
14212: $alternateRoot - path to prepend in place of path from $uri.
14213:
14214: =back
14215:
14216: Returns: Array of up to two items.
14217:
14218: =over
14219:
14220: a reference to an array of files/subdirectories
14221:
14222: =over
14223:
14224: Each element in the array of files/subdirectories is a & separated list of
14225: item name and the result of running stat on the item. If dirlist was requested
14226: for a file instead of a directory, the item name will be ''. For a directory
14227: listing, if the item is a metadata file, the element will end &N&M
14228: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
14229: default copyright set (1).
14230:
14231: =back
14232:
14233: a scalar containing error condition (if encountered).
14234:
14235: =over
14236:
14237: =item
14238: no_host (no homeserver identified for $username:$domain).
14239:
14240: =item
14241: no_such_host (server contacted for listing not identified as valid host).
14242:
14243: =item
14244: con_lost (connection to remote server failed).
14245:
14246: =item
14247: refused (invalid $username:$domain received on lond side).
14248:
14249: =item
14250: no_such_dir (directory at specified path on lond side does not exist).
14251:
14252: =item
14253: empty (directory at specified path on lond side is empty).
14254:
14255: =over
14256:
14257: This is currently not encountered because the &ls3, &ls2,
14258: &ls (_handler) routines on the lond side do not filter out
14259: . and .. from a directory listing.
14260:
14261: =back
14262:
14263: =back
14264:
14265: =back
14266:
14267: =item *
14268:
14269: spareserver() : find server with least workload from spare.tab
14270:
14271:
14272: =item *
14273:
14274: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
14275: if there is no corresponding loncapa host.
14276:
14277: =back
14278:
14279:
14280: =head2 Apache Request
14281:
14282: =over 4
14283:
14284: =item *
14285:
14286: ssi($url,%hash) : server side include, does a complete request cycle on url to
14287: localhost, posts hash
14288:
14289: =back
14290:
14291: =head2 Data to String to Data
14292:
14293: =over 4
14294:
14295: =item *
14296:
14297: hash2str(%hash) : convert a hash into a string complete with escaping and '='
14298: and '&' separators, supports elements that are arrayrefs and hashrefs
14299:
14300: =item *
14301:
14302: hashref2str($hashref) : convert a hashref into a string complete with
14303: escaping and '=' and '&' separators, supports elements that are
14304: arrayrefs and hashrefs
14305:
14306: =item *
14307:
14308: arrayref2str($arrayref) : convert an arrayref into a string complete
14309: with escaping and '&' separators, supports elements that are arrayrefs
14310: and hashrefs
14311:
14312: =item *
14313:
14314: str2hash($string) : convert string to hash using unescaping and
14315: splitting on '=' and '&', supports elements that are arrayrefs and
14316: hashrefs
14317:
14318: =item *
14319:
14320: str2array($string) : convert string to hash using unescaping and
14321: splitting on '&', supports elements that are arrayrefs and hashrefs
14322:
14323: =back
14324:
14325: =head2 Logging Routines
14326:
14327:
14328: These routines allow one to make log messages in the lonnet.log and
14329: lonnet.perm logfiles.
14330:
14331: =over 4
14332:
14333: =item *
14334:
14335: logtouch() : make sure the logfile, lonnet.log, exists
14336:
14337: =item *
14338:
14339: logthis() : append message to the normal lonnet.log file, it gets
14340: preiodically rolled over and deleted.
14341:
14342: =item *
14343:
14344: logperm() : append a permanent message to lonnet.perm.log, this log
14345: file never gets deleted by any automated portion of the system, only
14346: messages of critical importance should go in here.
14347:
14348:
14349: =back
14350:
14351: =head2 General File Helper Routines
14352:
14353: =over 4
14354:
14355: =item *
14356:
14357: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
14358: (a) files in /uploaded
14359: (i) If a local copy of the file exists -
14360: compares modification date of local copy with last-modified date for
14361: definitive version stored on home server for course. If local copy is
14362: stale, requests a new version from the home server and stores it.
14363: If the original has been removed from the home server, then local copy
14364: is unlinked.
14365: (ii) If local copy does not exist -
14366: requests the file from the home server and stores it.
14367:
14368: If $caller is 'uploadrep':
14369: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
14370: for request for files originally uploaded via DOCS.
14371: - returns 'ok' if fresh local copy now available, -1 otherwise.
14372:
14373: Otherwise:
14374: This indicates a call from the content generation phase of the request.
14375: - returns the entire contents of the file or -1.
14376:
14377: (b) files in /res
14378: - returns the entire contents of a file or -1;
14379: it properly subscribes to and replicates the file if neccessary.
14380:
14381:
14382: =item *
14383:
14384: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
14385: reference
14386:
14387: returns either a stat() list of data about the file or an empty list
14388: if the file doesn't exist or couldn't find out about it (connection
14389: problems or user unknown)
14390:
14391: =item *
14392:
14393: filelocation($dir,$file) : returns file system location of a file
14394: based on URI; meant to be "fairly clean" absolute reference, $dir is a
14395: directory that relative $file lookups are to looked in ($dir of /a/dir
14396: and a file of ../bob will become /a/bob)
14397:
14398: =item *
14399:
14400: hreflocation($dir,$file) : returns file system location or a URL; same as
14401: filelocation except for hrefs
14402:
14403: =item *
14404:
14405: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
14406: also removes beginning /home/httpd/html unless /priv/ follows it.
14407:
14408: =back
14409:
14410: =head2 Usererfile file routines (/uploaded*)
14411:
14412: =over 4
14413:
14414: =item *
14415:
14416: userfileupload(): main rotine for putting a file in a user or course's
14417: filespace, arguments are,
14418:
14419: formname - required - this is the name of the element in $env where the
14420: filename, and the contents of the file to create/modifed exist
14421: the filename is in $env{'form.'.$formname.'.filename'} and the
14422: contents of the file is located in $env{'form.'.$formname}
14423: context - if coursedoc, store the file in the course of the active role
14424: of the current user;
14425: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
14426: if 'canceloverwrite': delete file in tmp/overwrites directory
14427: subdir - required - subdirectory to put the file in under ../userfiles/
14428: if undefined, it will be placed in "unknown"
14429:
14430: (This routine calls clean_filename() to remove any dangerous
14431: characters from the filename, and then calls finuserfileupload() to
14432: complete the transaction)
14433:
14434: returns either the url of the uploaded file (/uploaded/....) if successful
14435: and /adm/notfound.html if unsuccessful
14436:
14437: =item *
14438:
14439: clean_filename(): routine for cleaing a filename up for storage in
14440: userfile space, argument is:
14441:
14442: filename - proposed filename
14443:
14444: returns: the new clean filename
14445:
14446: =item *
14447:
14448: finishuserfileupload(): routine that creates and sends the file to
14449: userspace, probably shouldn't be called directly
14450:
14451: docuname: username or courseid of destination for the file
14452: docudom: domain of user/course of destination for the file
14453: formname: same as for userfileupload()
14454: fname: filename (including subdirectories) for the file
14455: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
14456: allfiles: reference to hash used to store objects found by parser
14457: codebase: reference to hash used for codebases of java objects found by parser
14458: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
14459: thumbheight: height (pixels) of thumbnail to be created for uploaded image
14460: resizewidth: width to be used to resize image using resizeImage from ImageMagick
14461: resizeheight: height to be used to resize image using resizeImage from ImageMagick
14462: context: if 'overwrite', will move the uploaded file from its temporary location to
14463: userfiles to facilitate overwriting a previously uploaded file with same name.
14464: mimetype: reference to scalar to accommodate mime type determined
14465: from File::MMagic if $parser = parse.
14466:
14467: returns either the url of the uploaded file (/uploaded/....) if successful
14468: and /adm/notfound.html if unsuccessful (or an error message if context
14469: was 'overwrite').
14470:
14471:
14472: =item *
14473:
14474: renameuserfile(): renames an existing userfile to a new name
14475:
14476: Args:
14477: docuname: username or courseid of destination for the file
14478: docudom: domain of user/course of destination for the file
14479: old: current file name (including any subdirs under userfiles)
14480: new: desired file name (including any subdirs under userfiles)
14481:
14482: =item *
14483:
14484: mkdiruserfile(): creates a directory is a userfiles dir
14485:
14486: Args:
14487: docuname: username or courseid of destination for the file
14488: docudom: domain of user/course of destination for the file
14489: dir: dir to create (including any subdirs under userfiles)
14490:
14491: =item *
14492:
14493: removeuserfile(): removes a file that exists in userfiles
14494:
14495: Args:
14496: docuname: username or courseid of destination for the file
14497: docudom: domain of user/course of destination for the file
14498: fname: filname to delete (including any subdirs under userfiles)
14499:
14500: =item *
14501:
14502: removeuploadedurl(): convience function for removeuserfile()
14503:
14504: Args:
14505: url: a full /uploaded/... url to delete
14506:
14507: =item *
14508:
14509: get_portfile_permissions():
14510: Args:
14511: domain: domain of user or course contain the portfolio files
14512: user: name of user or num of course contain the portfolio files
14513: Returns:
14514: hashref of a dump of the proper file_permissions.db
14515:
14516:
14517: =item *
14518:
14519: get_access_controls():
14520:
14521: Args:
14522: current_permissions: the hash ref returned from get_portfile_permissions()
14523: group: (optional) the group you want the files associated with
14524: file: (optional) the file you want access info on
14525:
14526: Returns:
14527: a hash (keys are file names) of hashes containing
14528: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
14529: values are XML containing access control settings (see below)
14530:
14531: Internal notes:
14532:
14533: access controls are stored in file_permissions.db as key=value pairs.
14534: key -> path to file/file_name\0uniqueID:scope_end_start
14535: where scope -> public,guest,course,group,domains or users.
14536: end -> UNIX time for end of access (0 -> no end date)
14537: start -> UNIX time for start of access
14538:
14539: value -> XML description of access control
14540: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
14541: <start></start>
14542: <end></end>
14543:
14544: <password></password> for scope type = guest
14545:
14546: <domain></domain> for scope type = course or group
14547: <number></number>
14548: <roles id="">
14549: <role></role>
14550: <access></access>
14551: <section></section>
14552: <group></group>
14553: </roles>
14554:
14555: <dom></dom> for scope type = domains
14556:
14557: <users> for scope type = users
14558: <user>
14559: <uname></uname>
14560: <udom></udom>
14561: </user>
14562: </users>
14563: </scope>
14564:
14565: Access data is also aggregated for each file in an additional key=value pair:
14566: key -> path to file/file_name\0accesscontrol
14567: value -> reference to hash
14568: hash contains key = value pairs
14569: where key = uniqueID:scope_end_start
14570: value = UNIX time record was last updated
14571:
14572: Used to improve speed of look-ups of access controls for each file.
14573:
14574: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
14575:
14576: =item *
14577:
14578: modify_access_controls():
14579:
14580: Modifies access controls for a portfolio file
14581: Args
14582: 1. file name
14583: 2. reference to hash of required changes,
14584: 3. domain
14585: 4. username
14586: where domain,username are the domain of the portfolio owner
14587: (either a user or a course)
14588:
14589: Returns:
14590: 1. result of additions or updates ('ok' or 'error', with error message).
14591: 2. result of deletions ('ok' or 'error', with error message).
14592: 3. reference to hash of any new or updated access controls.
14593: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
14594: key = integer (inbound ID)
14595: value = uniqueID
14596:
14597: =item *
14598:
14599: get_timebased_id():
14600:
14601: Attempts to get a unique timestamp-based suffix for use with items added to a
14602: course via the Course Editor (e.g., folders, composite pages,
14603: group bulletin boards).
14604:
14605: Args: (first three required; six others optional)
14606:
14607: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
14608: docssequence, or name of group
14609:
14610: 2. keyid (alphanumeric): name of temporary locking key in hash,
14611: e.g., num, boardids
14612:
14613: 3. namespace: name of gdbm file used to store suffixes already assigned;
14614: file will be named nohist_namespace.db
14615:
14616: 4. cdom: domain of course; default is current course domain from %env
14617:
14618: 5. cnum: course number; default is current course number from %env
14619:
14620: 6. idtype: set to concat if an additional digit is to be appended to the
14621: unix timestamp to form the suffix, if the plain timestamp is already
14622: in use. Default is to not do this, but simply increment the unix
14623: timestamp by 1 until a unique key is obtained.
14624:
14625: 7. who: holder of locking key; defaults to user:domain for user.
14626:
14627: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
14628: retrying); default is 3.
14629:
14630: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
14631:
14632: Returns:
14633:
14634: 1. suffix obtained (numeric)
14635:
14636: 2. result of deleting locking key (ok if deleted, or lock never obtained)
14637:
14638: 3. error: contains (localized) error message if an error occurred.
14639:
14640:
14641: =back
14642:
14643: =head2 HTTP Helper Routines
14644:
14645: =over 4
14646:
14647: =item *
14648:
14649: escape() : unpack non-word characters into CGI-compatible hex codes
14650:
14651: =item *
14652:
14653: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
14654:
14655: =back
14656:
14657: =head1 PRIVATE SUBROUTINES
14658:
14659: =head2 Underlying communication routines (Shouldn't call)
14660:
14661: =over 4
14662:
14663: =item *
14664:
14665: subreply() : tries to pass a message to lonc, returns con_lost if incapable
14666:
14667: =item *
14668:
14669: reply() : uses subreply to send a message to remote machine, logs all failures
14670:
14671: =item *
14672:
14673: critical() : passes a critical message to another server; if cannot
14674: get through then place message in connection buffer directory and
14675: returns con_delayed, if incapable of saving message, returns
14676: con_failed
14677:
14678: =item *
14679:
14680: reconlonc() : tries to reconnect lonc client processes.
14681:
14682: =back
14683:
14684: =head2 Resource Access Logging
14685:
14686: =over 4
14687:
14688: =item *
14689:
14690: flushcourselogs() : flush (save) buffer logs and access logs
14691:
14692: =item *
14693:
14694: courselog($what) : save message for course in hash
14695:
14696: =item *
14697:
14698: courseacclog($what) : save message for course using &courselog(). Perform
14699: special processing for specific resource types (problems, exams, quizzes, etc).
14700:
14701: =item *
14702:
14703: goodbye() : flush course logs and log shutting down; it is called in srm.conf
14704: as a PerlChildExitHandler
14705:
14706: =back
14707:
14708: =head2 Other
14709:
14710: =over 4
14711:
14712: =item *
14713:
14714: symblist($mapname,%newhash) : update symbolic storage links
14715:
14716: =back
14717:
14718: =cut
14719:
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