1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1056.4.17 2011/01/07 06:24:41 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
79: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease);
80:
81: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
82: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
83: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
84: %courseownerbuf, %coursetypebuf,$locknum);
85:
86: use IO::Socket;
87: use GDBM_File;
88: use HTML::LCParser;
89: use Fcntl qw(:flock);
90: use Storable qw(thaw nfreeze);
91: use Time::HiRes qw( gettimeofday tv_interval );
92: use Cache::Memcached;
93: use Digest::MD5;
94: use Math::Random;
95: use File::MMagic;
96: use LONCAPA qw(:DEFAULT :match);
97: use LONCAPA::Configuration;
98: use File::Copy;
99:
100: my $readit;
101: my $max_connection_retries = 10; # Or some such value.
102:
103: require Exporter;
104:
105: our @ISA = qw (Exporter);
106: our @EXPORT = qw(%env);
107:
108:
109: # --------------------------------------------------------------------- Logging
110: {
111: my $logid;
112: sub instructor_log {
113: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
114: if (($cnum eq '') || ($cdom eq '')) {
115: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
116: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
117: }
118: $logid++;
119: my $now = time();
120: my $id=$now.'00000'.$$.'00000'.$logid;
121: return &Apache::lonnet::put('nohist_'.$hash_name,
122: { $id => {
123: 'exe_uname' => $env{'user.name'},
124: 'exe_udom' => $env{'user.domain'},
125: 'exe_time' => $now,
126: 'exe_ip' => $ENV{'REMOTE_ADDR'},
127: 'delflag' => $delflag,
128: 'logentry' => $storehash,
129: 'uname' => $uname,
130: 'udom' => $udom,
131: }
132: },$cdom,$cnum);
133: }
134: }
135:
136: sub logtouch {
137: my $execdir=$perlvar{'lonDaemons'};
138: unless (-e "$execdir/logs/lonnet.log") {
139: open(my $fh,">>$execdir/logs/lonnet.log");
140: close $fh;
141: }
142: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
143: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
144: }
145:
146: sub logthis {
147: my $message=shift;
148: my $execdir=$perlvar{'lonDaemons'};
149: my $now=time;
150: my $local=localtime($now);
151: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
152: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
153: print $fh $logstring;
154: close($fh);
155: }
156: return 1;
157: }
158:
159: sub logperm {
160: my $message=shift;
161: my $execdir=$perlvar{'lonDaemons'};
162: my $now=time;
163: my $local=localtime($now);
164: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
165: print $fh "$now:$message:$local\n";
166: close($fh);
167: }
168: return 1;
169: }
170:
171: sub create_connection {
172: my ($hostname,$lonid) = @_;
173: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
174: Type => SOCK_STREAM,
175: Timeout => 10);
176: return 0 if (!$client);
177: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
178: my $result = <$client>;
179: chomp($result);
180: return 1 if ($result eq 'done');
181: return 0;
182: }
183:
184: sub get_server_timezone {
185: my ($cnum,$cdom) = @_;
186: my $home=&homeserver($cnum,$cdom);
187: if ($home ne 'no_host') {
188: my $cachetime = 24*3600;
189: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
190: if (defined($cached)) {
191: return $timezone;
192: } else {
193: my $timezone = &reply('servertimezone',$home);
194: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
195: }
196: }
197: }
198:
199: sub get_server_loncaparev {
200: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
201: if (defined($lonhost)) {
202: if (!defined(&hostname($lonhost))) {
203: undef($lonhost);
204: }
205: }
206: if (!defined($lonhost)) {
207: if (defined(&domain($dom,'primary'))) {
208: $lonhost=&domain($dom,'primary');
209: if ($lonhost eq 'no_host') {
210: undef($lonhost);
211: }
212: }
213: }
214: if (defined($lonhost)) {
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
218: if (defined($cached)) {
219: return $loncaparev;
220: }
221: }
222: my ($answer,$loncaparev);
223: my @ids=¤t_machine_ids();
224: if (grep(/^\Q$lonhost\E$/,@ids)) {
225: $answer = $perlvar{'lonVersion'};
226: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
227: $loncaparev = $1;
228: }
229: } else {
230: $answer = &reply('serverloncaparev',$lonhost);
231: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
232: if ($caller eq 'loncron') {
233: my $ua=new LWP::UserAgent;
234: $ua->timeout(4);
235: my $protocol = $protocol{$lonhost};
236: $protocol = 'http' if ($protocol ne 'https');
237: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
238: my $request=new HTTP::Request('GET',$url);
239: my $response=$ua->request($request);
240: unless ($response->is_error()) {
241: my $content = $response->content;
242: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
243: $loncaparev = $1;
244: }
245: }
246: } else {
247: $loncaparev = $loncaparevs{$lonhost};
248: }
249: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
250: $loncaparev = $1;
251: }
252: }
253: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
254: }
255: }
256:
257: sub get_server_homeID {
258: my ($hostname,$ignore_cache,$caller) = @_;
259: unless ($ignore_cache) {
260: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
261: if (defined($cached)) {
262: return $serverhomeID;
263: }
264: }
265: my $cachetime = 12*3600;
266: my $serverhomeID;
267: if ($caller eq 'loncron') {
268: my @machine_ids = &machine_ids($hostname);
269: foreach my $id (@machine_ids) {
270: my $response = &reply('serverhomeID',$id);
271: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
272: $serverhomeID = $response;
273: last;
274: }
275: }
276: if ($serverhomeID eq '') {
277: $serverhomeID = $machine_ids[-1];
278: }
279: } else {
280: $serverhomeID = $serverhomeIDs{$hostname};
281: }
282: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
283: }
284:
285: # -------------------------------------------------- Non-critical communication
286: sub subreply {
287: my ($cmd,$server)=@_;
288: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
289: #
290: # With loncnew process trimming, there's a timing hole between lonc server
291: # process exit and the master server picking up the listen on the AF_UNIX
292: # socket. In that time interval, a lock file will exist:
293:
294: my $lockfile=$peerfile.".lock";
295: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
296: sleep(1);
297: }
298: # At this point, either a loncnew parent is listening or an old lonc
299: # or loncnew child is listening so we can connect or everything's dead.
300: #
301: # We'll give the connection a few tries before abandoning it. If
302: # connection is not possible, we'll con_lost back to the client.
303: #
304: my $client;
305: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
306: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
307: Type => SOCK_STREAM,
308: Timeout => 10);
309: if ($client) {
310: last; # Connected!
311: } else {
312: &create_connection(&hostname($server),$server);
313: }
314: sleep(1); # Try again later if failed connection.
315: }
316: my $answer;
317: if ($client) {
318: print $client "sethost:$server:$cmd\n";
319: $answer=<$client>;
320: if (!$answer) { $answer="con_lost"; }
321: chomp($answer);
322: } else {
323: $answer = 'con_lost'; # Failed connection.
324: }
325: return $answer;
326: }
327:
328: sub reply {
329: my ($cmd,$server)=@_;
330: unless (defined(&hostname($server))) { return 'no_such_host'; }
331: my $answer=subreply($cmd,$server);
332: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
333: &logthis("<font color=\"blue\">WARNING:".
334: " $cmd to $server returned $answer</font>");
335: }
336: return $answer;
337: }
338:
339: # ----------------------------------------------------------- Send USR1 to lonc
340:
341: sub reconlonc {
342: my ($lonid) = @_;
343: my $hostname = &hostname($lonid);
344: if ($lonid) {
345: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
346: if ($hostname && -e $peerfile) {
347: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
348: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
349: Type => SOCK_STREAM,
350: Timeout => 10);
351: if ($client) {
352: print $client ("reset_retries\n");
353: my $answer=<$client>;
354: #reset just this one.
355: }
356: }
357: return;
358: }
359:
360: &logthis("Trying to reconnect lonc");
361: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
362: if (open(my $fh,"<$loncfile")) {
363: my $loncpid=<$fh>;
364: chomp($loncpid);
365: if (kill 0 => $loncpid) {
366: &logthis("lonc at pid $loncpid responding, sending USR1");
367: kill USR1 => $loncpid;
368: sleep 1;
369: } else {
370: &logthis(
371: "<font color=\"blue\">WARNING:".
372: " lonc at pid $loncpid not responding, giving up</font>");
373: }
374: } else {
375: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
376: }
377: }
378:
379: # ------------------------------------------------------ Critical communication
380:
381: sub critical {
382: my ($cmd,$server)=@_;
383: unless (&hostname($server)) {
384: &logthis("<font color=\"blue\">WARNING:".
385: " Critical message to unknown server ($server)</font>");
386: return 'no_such_host';
387: }
388: my $answer=reply($cmd,$server);
389: if ($answer eq 'con_lost') {
390: &reconlonc("$perlvar{'lonSockDir'}/$server");
391: my $answer=reply($cmd,$server);
392: if ($answer eq 'con_lost') {
393: my $now=time;
394: my $middlename=$cmd;
395: $middlename=substr($middlename,0,16);
396: $middlename=~s/\W//g;
397: my $dfilename=
398: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
399: $dumpcount++;
400: {
401: my $dfh;
402: if (open($dfh,">$dfilename")) {
403: print $dfh "$cmd\n";
404: close($dfh);
405: }
406: }
407: sleep 2;
408: my $wcmd='';
409: {
410: my $dfh;
411: if (open($dfh,"<$dfilename")) {
412: $wcmd=<$dfh>;
413: close($dfh);
414: }
415: }
416: chomp($wcmd);
417: if ($wcmd eq $cmd) {
418: &logthis("<font color=\"blue\">WARNING: ".
419: "Connection buffer $dfilename: $cmd</font>");
420: &logperm("D:$server:$cmd");
421: return 'con_delayed';
422: } else {
423: &logthis("<font color=\"red\">CRITICAL:"
424: ." Critical connection failed: $server $cmd</font>");
425: &logperm("F:$server:$cmd");
426: return 'con_failed';
427: }
428: }
429: }
430: return $answer;
431: }
432:
433: # ------------------------------------------- check if return value is an error
434:
435: sub error {
436: my ($result) = @_;
437: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
438: if ($2 == 2) { return undef; }
439: return $1;
440: }
441: return undef;
442: }
443:
444: sub convert_and_load_session_env {
445: my ($lonidsdir,$handle)=@_;
446: my @profile;
447: {
448: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
449: if (!$opened) {
450: return 0;
451: }
452: flock($idf,LOCK_SH);
453: @profile=<$idf>;
454: close($idf);
455: }
456: my %temp_env;
457: foreach my $line (@profile) {
458: if ($line !~ m/=/) {
459: return 0;
460: }
461: chomp($line);
462: my ($envname,$envvalue)=split(/=/,$line,2);
463: $temp_env{&unescape($envname)} = &unescape($envvalue);
464: }
465: unlink("$lonidsdir/$handle.id");
466: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
467: 0640)) {
468: %disk_env = %temp_env;
469: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
470: untie(%disk_env);
471: }
472: return 1;
473: }
474:
475: # ------------------------------------------- Transfer profile into environment
476: my $env_loaded;
477: sub transfer_profile_to_env {
478: my ($lonidsdir,$handle,$force_transfer) = @_;
479: if (!$force_transfer && $env_loaded) { return; }
480:
481: if (!defined($lonidsdir)) {
482: $lonidsdir = $perlvar{'lonIDsDir'};
483: }
484: if (!defined($handle)) {
485: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
486: }
487:
488: my $convert;
489: {
490: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
491: if (!$opened) {
492: return;
493: }
494: flock($idf,LOCK_SH);
495: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
496: &GDBM_READER(),0640)) {
497: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
498: untie(%disk_env);
499: } else {
500: $convert = 1;
501: }
502: }
503: if ($convert) {
504: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
505: &logthis("Failed to load session, or convert session.");
506: }
507: }
508:
509: my %remove;
510: while ( my $envname = each(%env) ) {
511: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
512: if ($time < time-300) {
513: $remove{$key}++;
514: }
515: }
516: }
517:
518: $env{'user.environment'} = "$lonidsdir/$handle.id";
519: $env_loaded=1;
520: foreach my $expired_key (keys(%remove)) {
521: &delenv($expired_key);
522: }
523: }
524:
525: # ---------------------------------------------------- Check for valid session
526: sub check_for_valid_session {
527: my ($r) = @_;
528: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
529: my $lonid=$cookies{'lonID'};
530: return undef if (!$lonid);
531:
532: my $handle=&LONCAPA::clean_handle($lonid->value);
533: my $lonidsdir=$r->dir_config('lonIDsDir');
534: return undef if (!-e "$lonidsdir/$handle.id");
535:
536: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
537: return undef if (!$opened);
538:
539: flock($idf,LOCK_SH);
540: my %disk_env;
541: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
542: &GDBM_READER(),0640)) {
543: return undef;
544: }
545:
546: if (!defined($disk_env{'user.name'})
547: || !defined($disk_env{'user.domain'})) {
548: return undef;
549: }
550: return $handle;
551: }
552:
553: sub timed_flock {
554: my ($file,$lock_type) = @_;
555: my $failed=0;
556: eval {
557: local $SIG{__DIE__}='DEFAULT';
558: local $SIG{ALRM}=sub {
559: $failed=1;
560: die("failed lock");
561: };
562: alarm(13);
563: flock($file,$lock_type);
564: alarm(0);
565: };
566: if ($failed) {
567: return undef;
568: } else {
569: return 1;
570: }
571: }
572:
573: # ---------------------------------------------------------- Append Environment
574:
575: sub appenv {
576: my ($newenv,$roles) = @_;
577: if (ref($newenv) eq 'HASH') {
578: foreach my $key (keys(%{$newenv})) {
579: my $refused = 0;
580: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
581: $refused = 1;
582: if (ref($roles) eq 'ARRAY') {
583: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
584: if (grep(/^\Q$role\E$/,@{$roles})) {
585: $refused = 0;
586: }
587: }
588: }
589: if ($refused) {
590: &logthis("<font color=\"blue\">WARNING: ".
591: "Attempt to modify environment ".$key." to ".$newenv->{$key}
592: .'</font>');
593: delete($newenv->{$key});
594: } else {
595: $env{$key}=$newenv->{$key};
596: }
597: }
598: my $opened = open(my $env_file,'+<',$env{'user.environment'});
599: if ($opened
600: && &timed_flock($env_file,LOCK_EX)
601: &&
602: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
603: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
604: while (my ($key,$value) = each(%{$newenv})) {
605: $disk_env{$key} = $value;
606: }
607: untie(%disk_env);
608: }
609: }
610: return 'ok';
611: }
612: # ----------------------------------------------------- Delete from Environment
613:
614: sub delenv {
615: my ($delthis,$regexp) = @_;
616: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
617: &logthis("<font color=\"blue\">WARNING: ".
618: "Attempt to delete from environment ".$delthis);
619: return 'error';
620: }
621: my $opened = open(my $env_file,'+<',$env{'user.environment'});
622: if ($opened
623: && &timed_flock($env_file,LOCK_EX)
624: &&
625: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
626: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
627: foreach my $key (keys(%disk_env)) {
628: if ($regexp) {
629: if ($key=~/^$delthis/) {
630: delete($env{$key});
631: delete($disk_env{$key});
632: }
633: } else {
634: if ($key=~/^\Q$delthis\E/) {
635: delete($env{$key});
636: delete($disk_env{$key});
637: }
638: }
639: }
640: untie(%disk_env);
641: }
642: return 'ok';
643: }
644:
645: sub get_env_multiple {
646: my ($name) = @_;
647: my @values;
648: if (defined($env{$name})) {
649: # exists is it an array
650: if (ref($env{$name})) {
651: @values=@{ $env{$name} };
652: } else {
653: $values[0]=$env{$name};
654: }
655: }
656: return(@values);
657: }
658:
659: # ------------------------------------------------------------------- Locking
660:
661: sub set_lock {
662: my ($text)=@_;
663: $locknum++;
664: my $id=$$.'-'.$locknum;
665: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
666: 'session.lock.'.$id => $text});
667: return $id;
668: }
669:
670: sub get_locks {
671: my $num=0;
672: my %texts=();
673: foreach my $lock (split(/\,/,$env{'session.locks'})) {
674: if ($lock=~/\w/) {
675: $num++;
676: $texts{$lock}=$env{'session.lock.'.$lock};
677: }
678: }
679: return ($num,%texts);
680: }
681:
682: sub remove_lock {
683: my ($id)=@_;
684: my $newlocks='';
685: foreach my $lock (split(/\,/,$env{'session.locks'})) {
686: if (($lock=~/\w/) && ($lock ne $id)) {
687: $newlocks.=','.$lock;
688: }
689: }
690: &appenv({'session.locks' => $newlocks});
691: &delenv('session.lock.'.$id);
692: }
693:
694: sub remove_all_locks {
695: my $activelocks=$env{'session.locks'};
696: foreach my $lock (split(/\,/,$env{'session.locks'})) {
697: if ($lock=~/\w/) {
698: &remove_lock($lock);
699: }
700: }
701: }
702:
703:
704: # ------------------------------------------ Find out current server userload
705: sub userload {
706: my $numusers=0;
707: {
708: opendir(LONIDS,$perlvar{'lonIDsDir'});
709: my $filename;
710: my $curtime=time;
711: while ($filename=readdir(LONIDS)) {
712: next if ($filename eq '.' || $filename eq '..');
713: next if ($filename =~ /publicuser_\d+\.id/);
714: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
715: if ($curtime-$mtime < 1800) { $numusers++; }
716: }
717: closedir(LONIDS);
718: }
719: my $userloadpercent=0;
720: my $maxuserload=$perlvar{'lonUserLoadLim'};
721: if ($maxuserload) {
722: $userloadpercent=100*$numusers/$maxuserload;
723: }
724: $userloadpercent=sprintf("%.2f",$userloadpercent);
725: return $userloadpercent;
726: }
727:
728: # ------------------------------------------ Fight off request when overloaded
729:
730: sub overloaderror {
731: my ($r,$checkserver)=@_;
732: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
733: my $loadavg;
734: if ($checkserver eq $perlvar{'lonHostID'}) {
735: open(my $loadfile,'/proc/loadavg');
736: $loadavg=<$loadfile>;
737: $loadavg =~ s/\s.*//g;
738: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
739: close($loadfile);
740: } else {
741: $loadavg=&reply('load',$checkserver);
742: }
743: my $overload=$loadavg-100;
744: if ($overload>0) {
745: $r->err_headers_out->{'Retry-After'}=$overload;
746: $r->log_error('Overload of '.$overload.' on '.$checkserver);
747: return 413;
748: }
749: return '';
750: }
751:
752: # ------------------------------ Find server with least workload from spare.tab
753:
754: sub spareserver {
755: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
756: my $spare_server;
757: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
758: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
759: : $userloadpercent;
760: my ($uint_dom,$remotesessions);
761: if ($env{'user.domain'}) {
762: my $uprimary_id = &Apache::lonnet::domain($env{'user.domain'},'primary');
763: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
764: my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
765: $remotesessions = $udomdefaults{'remotesessions'};
766: }
767: foreach my $try_server (@{ $spareid{'primary'} }) {
768: if ($uint_dom) {
769: next unless (&spare_can_host($env{'user.domain'},$uint_dom,
770: $remotesessions,$try_server));
771: }
772: ($spare_server, $lowest_load) =
773: &compare_server_load($try_server, $spare_server, $lowest_load);
774: }
775:
776: my $found_server = ($spare_server ne '' && $lowest_load < 100);
777:
778: if (!$found_server) {
779: foreach my $try_server (@{ $spareid{'default'} }) {
780: if ($uint_dom) {
781: next unless (&spare_can_host($env{'user.domain'},$uint_dom,
782: $remotesessions,$try_server));
783: }
784: ($spare_server, $lowest_load) =
785: &compare_server_load($try_server, $spare_server, $lowest_load);
786: }
787: }
788:
789: if (!$want_server_name) {
790: my $protocol = 'http';
791: if ($protocol{$spare_server} eq 'https') {
792: $protocol = $protocol{$spare_server};
793: }
794: if (defined($spare_server)) {
795: my $hostname = &hostname($spare_server);
796: if (defined($hostname)) {
797: $spare_server = $protocol.'://'.$hostname;
798: }
799: }
800: }
801: return $spare_server;
802: }
803:
804: sub compare_server_load {
805: my ($try_server, $spare_server, $lowest_load) = @_;
806:
807: my $loadans = &reply('load', $try_server);
808: my $userloadans = &reply('userload',$try_server);
809:
810: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
811: return; #didn't get a number from the server
812: }
813:
814: my $load;
815: if ($loadans =~ /\d/) {
816: if ($userloadans =~ /\d/) {
817: #both are numbers, pick the bigger one
818: $load = ($loadans > $userloadans) ? $loadans
819: : $userloadans;
820: } else {
821: $load = $loadans;
822: }
823: } else {
824: $load = $userloadans;
825: }
826:
827: if (($load =~ /\d/) && ($load < $lowest_load)) {
828: $spare_server = $try_server;
829: $lowest_load = $load;
830: }
831: return ($spare_server,$lowest_load);
832: }
833:
834: # --------------------------- ask offload servers if user already has a session
835: sub find_existing_session {
836: my ($udom,$uname) = @_;
837: foreach my $try_server (@{ $spareid{'primary'} },
838: @{ $spareid{'default'} }) {
839: return $try_server if (&has_user_session($try_server, $udom, $uname));
840: }
841: return;
842: }
843:
844: # -------------------------------- ask if server already has a session for user
845: sub has_user_session {
846: my ($lonid,$udom,$uname) = @_;
847: my $result = &reply(join(':','userhassession',
848: map {&escape($_)} ($udom,$uname)),$lonid);
849: return 1 if ($result eq 'ok');
850:
851: return 0;
852: }
853:
854: # --------- determine least loaded server in a user's domain which allows login
855:
856: sub choose_server {
857: my ($udom) = @_;
858: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
859: my %servers = &get_servers($udom);
860: my $lowest_load = 30000;
861: my ($login_host,$hostname);
862: foreach my $lonhost (keys(%servers)) {
863: my $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
864: if ($loginvia eq '') {
865: ($login_host, $lowest_load) =
866: &compare_server_load($lonhost, $login_host, $lowest_load);
867: }
868: }
869: if ($login_host ne '') {
870: $hostname = $servers{$login_host};
871: }
872: return ($login_host,$hostname);
873: }
874:
875: # --------------------------------------------- Try to change a user's password
876:
877: sub changepass {
878: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
879: $currentpass = &escape($currentpass);
880: $newpass = &escape($newpass);
881: my $lonhost = $perlvar{'lonHostID'};
882: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
883: $server);
884: if (! $answer) {
885: &logthis("No reply on password change request to $server ".
886: "by $uname in domain $udom.");
887: } elsif ($answer =~ "^ok") {
888: &logthis("$uname in $udom successfully changed their password ".
889: "on $server.");
890: } elsif ($answer =~ "^pwchange_failure") {
891: &logthis("$uname in $udom was unable to change their password ".
892: "on $server. The action was blocked by either lcpasswd ".
893: "or pwchange");
894: } elsif ($answer =~ "^non_authorized") {
895: &logthis("$uname in $udom did not get their password correct when ".
896: "attempting to change it on $server.");
897: } elsif ($answer =~ "^auth_mode_error") {
898: &logthis("$uname in $udom attempted to change their password despite ".
899: "not being locally or internally authenticated on $server.");
900: } elsif ($answer =~ "^unknown_user") {
901: &logthis("$uname in $udom attempted to change their password ".
902: "on $server but were unable to because $server is not ".
903: "their home server.");
904: } elsif ($answer =~ "^refused") {
905: &logthis("$server refused to change $uname in $udom password because ".
906: "it was sent an unencrypted request to change the password.");
907: } elsif ($answer =~ "invalid_client") {
908: &logthis("$server refused to change $uname in $udom password because ".
909: "it was a reset by e-mail originating from an invalid server.");
910: }
911: return $answer;
912: }
913:
914: # ----------------------- Try to determine user's current authentication scheme
915:
916: sub queryauthenticate {
917: my ($uname,$udom)=@_;
918: my $uhome=&homeserver($uname,$udom);
919: if (!$uhome) {
920: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
921: return 'no_host';
922: }
923: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
924: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
925: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
926: }
927: return $answer;
928: }
929:
930: # --------- Try to authenticate user from domain's lib servers (first this one)
931:
932: sub authenticate {
933: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
934: $upass=&escape($upass);
935: $uname= &LONCAPA::clean_username($uname);
936: my $uhome=&homeserver($uname,$udom,1);
937: my $newhome;
938: if ((!$uhome) || ($uhome eq 'no_host')) {
939: # Maybe the machine was offline and only re-appeared again recently?
940: &reconlonc();
941: # One more
942: $uhome=&homeserver($uname,$udom,1);
943: if (($uhome eq 'no_host') && $checkdefauth) {
944: if (defined(&domain($udom,'primary'))) {
945: $newhome=&domain($udom,'primary');
946: }
947: if ($newhome ne '') {
948: $uhome = $newhome;
949: }
950: }
951: if ((!$uhome) || ($uhome eq 'no_host')) {
952: &logthis("User $uname at $udom is unknown in authenticate");
953: return 'no_host';
954: }
955: }
956: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
957: if ($answer eq 'authorized') {
958: if ($newhome) {
959: &logthis("User $uname at $udom authorized by $uhome, but needs account");
960: return 'no_account_on_host';
961: } else {
962: &logthis("User $uname at $udom authorized by $uhome");
963: return $uhome;
964: }
965: }
966: if ($answer eq 'non_authorized') {
967: &logthis("User $uname at $udom rejected by $uhome");
968: return 'no_host';
969: }
970: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
971: return 'no_host';
972: }
973:
974: sub can_host_session {
975: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
976: my $canhost = 1;
977: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
978: if (ref($remotesessions) eq 'HASH') {
979: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
980: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
981: $canhost = 0;
982: } else {
983: $canhost = 1;
984: }
985: }
986: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
987: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
988: $canhost = 1;
989: } else {
990: $canhost = 0;
991: }
992: }
993: if ($canhost) {
994: if ($remotesessions->{'version'} ne '') {
995: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
996: if ($reqmajor ne '' && $reqminor ne '') {
997: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
998: my $major = $1;
999: my $minor = $2;
1000: if (($major < $reqmajor ) ||
1001: (($major == $reqmajor) && ($minor < $reqminor))) {
1002: $canhost = 0;
1003: }
1004: } else {
1005: $canhost = 0;
1006: }
1007: }
1008: }
1009: }
1010: }
1011: if ($canhost) {
1012: if (ref($hostedsessions) eq 'HASH') {
1013: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1014: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'excludedomain'}})) {
1015: $canhost = 0;
1016: } else {
1017: $canhost = 1;
1018: }
1019: }
1020: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1021: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'includedomain'}})) {
1022: $canhost = 1;
1023: } else {
1024: $canhost = 0;
1025: }
1026: }
1027: }
1028: }
1029: return $canhost;
1030: }
1031:
1032: sub spare_can_host {
1033: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1034: my $canhost=1;
1035: my @intdoms;
1036: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1037: if (ref($internet_names) eq 'ARRAY') {
1038: @intdoms = @{$internet_names};
1039: }
1040: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1041: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1042: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1043: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1044: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1045: $canhost = &can_host_session($udom,$try_server,$remoterev,
1046: $remotesessions,
1047: $defdomdefaults{'hostedsessions'});
1048: }
1049: return $canhost;
1050: }
1051:
1052: # ---------------------- Find the homebase for a user from domain's lib servers
1053:
1054: my %homecache;
1055: sub homeserver {
1056: my ($uname,$udom,$ignoreBadCache)=@_;
1057: my $index="$uname:$udom";
1058:
1059: if (exists($homecache{$index})) { return $homecache{$index}; }
1060:
1061: my %servers = &get_servers($udom,'library');
1062: foreach my $tryserver (keys(%servers)) {
1063: next if ($ignoreBadCache ne 'true' &&
1064: exists($badServerCache{$tryserver}));
1065:
1066: my $answer=reply("home:$udom:$uname",$tryserver);
1067: if ($answer eq 'found') {
1068: delete($badServerCache{$tryserver});
1069: return $homecache{$index}=$tryserver;
1070: } elsif ($answer eq 'no_host') {
1071: $badServerCache{$tryserver}=1;
1072: }
1073: }
1074: return 'no_host';
1075: }
1076:
1077: # ------------------------------------- Find the usernames behind a list of IDs
1078:
1079: sub idget {
1080: my ($udom,@ids)=@_;
1081: my %returnhash=();
1082:
1083: my %servers = &get_servers($udom,'library');
1084: foreach my $tryserver (keys(%servers)) {
1085: my $idlist=join('&',@ids);
1086: $idlist=~tr/A-Z/a-z/;
1087: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1088: my @answer=();
1089: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1090: @answer=split(/\&/,$reply);
1091: } ;
1092: my $i;
1093: for ($i=0;$i<=$#ids;$i++) {
1094: if ($answer[$i]) {
1095: $returnhash{$ids[$i]}=$answer[$i];
1096: }
1097: }
1098: }
1099: return %returnhash;
1100: }
1101:
1102: # ------------------------------------- Find the IDs behind a list of usernames
1103:
1104: sub idrget {
1105: my ($udom,@unames)=@_;
1106: my %returnhash=();
1107: foreach my $uname (@unames) {
1108: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1109: }
1110: return %returnhash;
1111: }
1112:
1113: # ------------------------------- Store away a list of names and associated IDs
1114:
1115: sub idput {
1116: my ($udom,%ids)=@_;
1117: my %servers=();
1118: foreach my $uname (keys(%ids)) {
1119: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1120: my $uhom=&homeserver($uname,$udom);
1121: if ($uhom ne 'no_host') {
1122: my $id=&escape($ids{$uname});
1123: $id=~tr/A-Z/a-z/;
1124: my $esc_unam=&escape($uname);
1125: if ($servers{$uhom}) {
1126: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1127: } else {
1128: $servers{$uhom}=$id.'='.$esc_unam;
1129: }
1130: }
1131: }
1132: foreach my $server (keys(%servers)) {
1133: &critical('idput:'.$udom.':'.$servers{$server},$server);
1134: }
1135: }
1136:
1137: # ------------------------------dump from db file owned by domainconfig user
1138: sub dump_dom {
1139: my ($namespace,$udom,$regexp,$range)=@_;
1140: if (!$udom) {
1141: $udom=$env{'user.domain'};
1142: }
1143: my %returnhash;
1144: if ($udom) {
1145: my $uname = &get_domainconfiguser($udom);
1146: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1147: }
1148: return %returnhash;
1149: }
1150:
1151: # ------------------------------------------ get items from domain db files
1152:
1153: sub get_dom {
1154: my ($namespace,$storearr,$udom,$uhome)=@_;
1155: my $items='';
1156: foreach my $item (@$storearr) {
1157: $items.=&escape($item).'&';
1158: }
1159: $items=~s/\&$//;
1160: if (!$udom) {
1161: $udom=$env{'user.domain'};
1162: if (defined(&domain($udom,'primary'))) {
1163: $uhome=&domain($udom,'primary');
1164: } else {
1165: undef($uhome);
1166: }
1167: } else {
1168: if (!$uhome) {
1169: if (defined(&domain($udom,'primary'))) {
1170: $uhome=&domain($udom,'primary');
1171: }
1172: }
1173: }
1174: if ($udom && $uhome && ($uhome ne 'no_host')) {
1175: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1176: my %returnhash;
1177: if ($rep eq '' || $rep =~ /^error: 2 /) {
1178: return %returnhash;
1179: }
1180: my @pairs=split(/\&/,$rep);
1181: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1182: return @pairs;
1183: }
1184: my $i=0;
1185: foreach my $item (@$storearr) {
1186: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1187: $i++;
1188: }
1189: return %returnhash;
1190: } else {
1191: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1192: }
1193: }
1194:
1195: # -------------------------------------------- put items in domain db files
1196:
1197: sub put_dom {
1198: my ($namespace,$storehash,$udom,$uhome)=@_;
1199: if (!$udom) {
1200: $udom=$env{'user.domain'};
1201: if (defined(&domain($udom,'primary'))) {
1202: $uhome=&domain($udom,'primary');
1203: } else {
1204: undef($uhome);
1205: }
1206: } else {
1207: if (!$uhome) {
1208: if (defined(&domain($udom,'primary'))) {
1209: $uhome=&domain($udom,'primary');
1210: }
1211: }
1212: }
1213: if ($udom && $uhome && ($uhome ne 'no_host')) {
1214: my $items='';
1215: foreach my $item (keys(%$storehash)) {
1216: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1217: }
1218: $items=~s/\&$//;
1219: return &reply("putdom:$udom:$namespace:$items",$uhome);
1220: } else {
1221: &logthis("put_dom failed - no homeserver and/or domain");
1222: }
1223: }
1224:
1225: # --------------------- newput for items in db file owned by domainconfig user
1226: sub newput_dom {
1227: my ($namespace,$storehash,$udom) = @_;
1228: my $result;
1229: if (!$udom) {
1230: $udom=$env{'user.domain'};
1231: }
1232: if ($udom) {
1233: my $uname = &get_domainconfiguser($udom);
1234: $result = &newput($namespace,$storehash,$udom,$uname);
1235: }
1236: return $result;
1237: }
1238:
1239: # --------------------- delete for items in db file owned by domainconfig user
1240: sub del_dom {
1241: my ($namespace,$storearr,$udom)=@_;
1242: if (ref($storearr) eq 'ARRAY') {
1243: if (!$udom) {
1244: $udom=$env{'user.domain'};
1245: }
1246: if ($udom) {
1247: my $uname = &get_domainconfiguser($udom);
1248: return &del($namespace,$storearr,$udom,$uname);
1249: }
1250: }
1251: }
1252:
1253: # ----------------------------------construct domainconfig user for a domain
1254: sub get_domainconfiguser {
1255: my ($udom) = @_;
1256: return $udom.'-domainconfig';
1257: }
1258:
1259: sub retrieve_inst_usertypes {
1260: my ($udom) = @_;
1261: my (%returnhash,@order);
1262: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1263: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1264: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1265: %returnhash = %{$domdefs{'inststatustypes'}};
1266: @order = @{$domdefs{'inststatusorder'}};
1267: } else {
1268: if (defined(&domain($udom,'primary'))) {
1269: my $uhome=&domain($udom,'primary');
1270: my $rep=&reply("inst_usertypes:$udom",$uhome);
1271: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1272: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1273: return (\%returnhash,\@order);
1274: }
1275: my ($hashitems,$orderitems) = split(/:/,$rep);
1276: my @pairs=split(/\&/,$hashitems);
1277: foreach my $item (@pairs) {
1278: my ($key,$value)=split(/=/,$item,2);
1279: $key = &unescape($key);
1280: next if ($key =~ /^error: 2 /);
1281: $returnhash{$key}=&thaw_unescape($value);
1282: }
1283: my @esc_order = split(/\&/,$orderitems);
1284: foreach my $item (@esc_order) {
1285: push(@order,&unescape($item));
1286: }
1287: } else {
1288: &logthis("get_dom failed - no primary domain server for $udom");
1289: }
1290: }
1291: return (\%returnhash,\@order);
1292: }
1293:
1294: sub is_domainimage {
1295: my ($url) = @_;
1296: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1297: if (&domain($1) ne '') {
1298: return '1';
1299: }
1300: }
1301: return;
1302: }
1303:
1304: sub inst_directory_query {
1305: my ($srch) = @_;
1306: my $udom = $srch->{'srchdomain'};
1307: my %results;
1308: my $homeserver = &domain($udom,'primary');
1309: my $outcome;
1310: if ($homeserver ne '') {
1311: my $queryid=&reply("querysend:instdirsearch:".
1312: &escape($srch->{'srchby'}).':'.
1313: &escape($srch->{'srchterm'}).':'.
1314: &escape($srch->{'srchtype'}),$homeserver);
1315: my $host=&hostname($homeserver);
1316: if ($queryid !~/^\Q$host\E\_/) {
1317: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1318: return;
1319: }
1320: my $response = &get_query_reply($queryid);
1321: my $maxtries = 5;
1322: my $tries = 1;
1323: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1324: $response = &get_query_reply($queryid);
1325: $tries ++;
1326: }
1327:
1328: if (!&error($response) && $response ne 'refused') {
1329: if ($response eq 'unavailable') {
1330: $outcome = $response;
1331: } else {
1332: $outcome = 'ok';
1333: my @matches = split(/\n/,$response);
1334: foreach my $match (@matches) {
1335: my ($key,$value) = split(/=/,$match);
1336: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1337: }
1338: }
1339: }
1340: }
1341: return ($outcome,%results);
1342: }
1343:
1344: sub usersearch {
1345: my ($srch) = @_;
1346: my $dom = $srch->{'srchdomain'};
1347: my %results;
1348: my %libserv = &all_library();
1349: my $query = 'usersearch';
1350: foreach my $tryserver (keys(%libserv)) {
1351: if (&host_domain($tryserver) eq $dom) {
1352: my $host=&hostname($tryserver);
1353: my $queryid=
1354: &reply("querysend:".&escape($query).':'.
1355: &escape($srch->{'srchby'}).':'.
1356: &escape($srch->{'srchtype'}).':'.
1357: &escape($srch->{'srchterm'}),$tryserver);
1358: if ($queryid !~/^\Q$host\E\_/) {
1359: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1360: next;
1361: }
1362: my $reply = &get_query_reply($queryid);
1363: my $maxtries = 1;
1364: my $tries = 1;
1365: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1366: $reply = &get_query_reply($queryid);
1367: $tries ++;
1368: }
1369: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1370: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1371: } else {
1372: my @matches;
1373: if ($reply =~ /\n/) {
1374: @matches = split(/\n/,$reply);
1375: } else {
1376: @matches = split(/\&/,$reply);
1377: }
1378: foreach my $match (@matches) {
1379: my ($uname,$udom,%userhash);
1380: foreach my $entry (split(/:/,$match)) {
1381: my ($key,$value) =
1382: map {&unescape($_);} split(/=/,$entry);
1383: $userhash{$key} = $value;
1384: if ($key eq 'username') {
1385: $uname = $value;
1386: } elsif ($key eq 'domain') {
1387: $udom = $value;
1388: }
1389: }
1390: $results{$uname.':'.$udom} = \%userhash;
1391: }
1392: }
1393: }
1394: }
1395: return %results;
1396: }
1397:
1398: sub get_instuser {
1399: my ($udom,$uname,$id) = @_;
1400: my $homeserver = &domain($udom,'primary');
1401: my ($outcome,%results);
1402: if ($homeserver ne '') {
1403: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1404: &escape($id).':'.&escape($udom),$homeserver);
1405: my $host=&hostname($homeserver);
1406: if ($queryid !~/^\Q$host\E\_/) {
1407: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1408: return;
1409: }
1410: my $response = &get_query_reply($queryid);
1411: my $maxtries = 5;
1412: my $tries = 1;
1413: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1414: $response = &get_query_reply($queryid);
1415: $tries ++;
1416: }
1417: if (!&error($response) && $response ne 'refused') {
1418: if ($response eq 'unavailable') {
1419: $outcome = $response;
1420: } else {
1421: $outcome = 'ok';
1422: my @matches = split(/\n/,$response);
1423: foreach my $match (@matches) {
1424: my ($key,$value) = split(/=/,$match);
1425: $results{&unescape($key)} = &thaw_unescape($value);
1426: }
1427: }
1428: }
1429: }
1430: my %userinfo;
1431: if (ref($results{$uname}) eq 'HASH') {
1432: %userinfo = %{$results{$uname}};
1433: }
1434: return ($outcome,%userinfo);
1435: }
1436:
1437: sub inst_rulecheck {
1438: my ($udom,$uname,$id,$item,$rules) = @_;
1439: my %returnhash;
1440: if ($udom ne '') {
1441: if (ref($rules) eq 'ARRAY') {
1442: @{$rules} = map {&escape($_);} (@{$rules});
1443: my $rulestr = join(':',@{$rules});
1444: my $homeserver=&domain($udom,'primary');
1445: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1446: my $response;
1447: if ($item eq 'username') {
1448: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1449: ':'.&escape($uname).':'.$rulestr,
1450: $homeserver));
1451: } elsif ($item eq 'id') {
1452: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1453: ':'.&escape($id).':'.$rulestr,
1454: $homeserver));
1455: } elsif ($item eq 'selfcreate') {
1456: $response=&unescape(&reply('instselfcreatecheck:'.
1457: &escape($udom).':'.&escape($uname).
1458: ':'.$rulestr,$homeserver));
1459: }
1460: if ($response ne 'refused') {
1461: my @pairs=split(/\&/,$response);
1462: foreach my $item (@pairs) {
1463: my ($key,$value)=split(/=/,$item,2);
1464: $key = &unescape($key);
1465: next if ($key =~ /^error: 2 /);
1466: $returnhash{$key}=&thaw_unescape($value);
1467: }
1468: }
1469: }
1470: }
1471: }
1472: return %returnhash;
1473: }
1474:
1475: sub inst_userrules {
1476: my ($udom,$check) = @_;
1477: my (%ruleshash,@ruleorder);
1478: if ($udom ne '') {
1479: my $homeserver=&domain($udom,'primary');
1480: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1481: my $response;
1482: if ($check eq 'id') {
1483: $response=&reply('instidrules:'.&escape($udom),
1484: $homeserver);
1485: } elsif ($check eq 'email') {
1486: $response=&reply('instemailrules:'.&escape($udom),
1487: $homeserver);
1488: } else {
1489: $response=&reply('instuserrules:'.&escape($udom),
1490: $homeserver);
1491: }
1492: if (($response ne 'refused') && ($response ne 'error') &&
1493: ($response ne 'unknown_cmd') &&
1494: ($response ne 'no_such_host')) {
1495: my ($hashitems,$orderitems) = split(/:/,$response);
1496: my @pairs=split(/\&/,$hashitems);
1497: foreach my $item (@pairs) {
1498: my ($key,$value)=split(/=/,$item,2);
1499: $key = &unescape($key);
1500: next if ($key =~ /^error: 2 /);
1501: $ruleshash{$key}=&thaw_unescape($value);
1502: }
1503: my @esc_order = split(/\&/,$orderitems);
1504: foreach my $item (@esc_order) {
1505: push(@ruleorder,&unescape($item));
1506: }
1507: }
1508: }
1509: }
1510: return (\%ruleshash,\@ruleorder);
1511: }
1512:
1513: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1514:
1515: sub get_domain_defaults {
1516: my ($domain) = @_;
1517: my $cachetime = 60*60*24;
1518: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1519: if (defined($cached)) {
1520: if (ref($result) eq 'HASH') {
1521: return %{$result};
1522: }
1523: }
1524: my %domdefaults;
1525: my %domconfig =
1526: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1527: 'requestcourses','inststatus',
1528: 'coursedefaults','usersessions'],$domain);
1529: if (ref($domconfig{'defaults'}) eq 'HASH') {
1530: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1531: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1532: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1533: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1534: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1535: } else {
1536: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1537: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1538: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1539: }
1540: if (ref($domconfig{'quotas'}) eq 'HASH') {
1541: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1542: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1543: } else {
1544: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1545: }
1546: my @usertools = ('aboutme','blog','portfolio');
1547: foreach my $item (@usertools) {
1548: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1549: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1550: }
1551: }
1552: }
1553: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1554: foreach my $item ('official','unofficial','community') {
1555: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1556: }
1557: }
1558: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1559: foreach my $item ('inststatustypes','inststatusorder') {
1560: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1561: }
1562: }
1563: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1564: foreach my $item ('canuse_pdfforms') {
1565: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1566: }
1567: }
1568: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1569: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1570: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1571: }
1572: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1573: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1574: }
1575: }
1576: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1577: $cachetime);
1578: return %domdefaults;
1579: }
1580:
1581: # --------------------------------------------------- Assign a key to a student
1582:
1583: sub assign_access_key {
1584: #
1585: # a valid key looks like uname:udom#comments
1586: # comments are being appended
1587: #
1588: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1589: $kdom=
1590: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1591: $knum=
1592: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1593: $cdom=
1594: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1595: $cnum=
1596: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1597: $udom=$env{'user.name'} unless (defined($udom));
1598: $uname=$env{'user.domain'} unless (defined($uname));
1599: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1600: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1601: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1602: # assigned to this person
1603: # - this should not happen,
1604: # unless something went wrong
1605: # the first time around
1606: # ready to assign
1607: $logentry=$1.'; '.$logentry;
1608: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1609: $kdom,$knum) eq 'ok') {
1610: # key now belongs to user
1611: my $envkey='key.'.$cdom.'_'.$cnum;
1612: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1613: &appenv({'environment.'.$envkey => $ckey});
1614: return 'ok';
1615: } else {
1616: return
1617: 'error: Count not permanently assign key, will need to be re-entered later.';
1618: }
1619: } else {
1620: return 'error: Could not assign key, try again later.';
1621: }
1622: } elsif (!$existing{$ckey}) {
1623: # the key does not exist
1624: return 'error: The key does not exist';
1625: } else {
1626: # the key is somebody else's
1627: return 'error: The key is already in use';
1628: }
1629: }
1630:
1631: # ------------------------------------------ put an additional comment on a key
1632:
1633: sub comment_access_key {
1634: #
1635: # a valid key looks like uname:udom#comments
1636: # comments are being appended
1637: #
1638: my ($ckey,$cdom,$cnum,$logentry)=@_;
1639: $cdom=
1640: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1641: $cnum=
1642: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1643: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1644: if ($existing{$ckey}) {
1645: $existing{$ckey}.='; '.$logentry;
1646: # ready to assign
1647: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1648: $cdom,$cnum) eq 'ok') {
1649: return 'ok';
1650: } else {
1651: return 'error: Count not store comment.';
1652: }
1653: } else {
1654: # the key does not exist
1655: return 'error: The key does not exist';
1656: }
1657: }
1658:
1659: # ------------------------------------------------------ Generate a set of keys
1660:
1661: sub generate_access_keys {
1662: my ($number,$cdom,$cnum,$logentry)=@_;
1663: $cdom=
1664: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1665: $cnum=
1666: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1667: unless (&allowed('mky',$cdom)) { return 0; }
1668: unless (($cdom) && ($cnum)) { return 0; }
1669: if ($number>10000) { return 0; }
1670: sleep(2); # make sure don't get same seed twice
1671: srand(time()^($$+($$<<15))); # from "Programming Perl"
1672: my $total=0;
1673: for (my $i=1;$i<=$number;$i++) {
1674: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1675: sprintf("%lx",int(100000*rand)).'-'.
1676: sprintf("%lx",int(100000*rand));
1677: $newkey=~s/1/g/g; # folks mix up 1 and l
1678: $newkey=~s/0/h/g; # and also 0 and O
1679: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1680: if ($existing{$newkey}) {
1681: $i--;
1682: } else {
1683: if (&put('accesskeys',
1684: { $newkey => '# generated '.localtime().
1685: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1686: '; '.$logentry },
1687: $cdom,$cnum) eq 'ok') {
1688: $total++;
1689: }
1690: }
1691: }
1692: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1693: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1694: return $total;
1695: }
1696:
1697: # ------------------------------------------------------- Validate an accesskey
1698:
1699: sub validate_access_key {
1700: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1701: $cdom=
1702: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1703: $cnum=
1704: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1705: $udom=$env{'user.domain'} unless (defined($udom));
1706: $uname=$env{'user.name'} unless (defined($uname));
1707: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1708: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1709: }
1710:
1711: # ------------------------------------- Find the section of student in a course
1712: sub devalidate_getsection_cache {
1713: my ($udom,$unam,$courseid)=@_;
1714: my $hashid="$udom:$unam:$courseid";
1715: &devalidate_cache_new('getsection',$hashid);
1716: }
1717:
1718: sub courseid_to_courseurl {
1719: my ($courseid) = @_;
1720: #already url style courseid
1721: return $courseid if ($courseid =~ m{^/});
1722:
1723: if (exists($env{'course.'.$courseid.'.num'})) {
1724: my $cnum = $env{'course.'.$courseid.'.num'};
1725: my $cdom = $env{'course.'.$courseid.'.domain'};
1726: return "/$cdom/$cnum";
1727: }
1728:
1729: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1730: if (exists($courseinfo{'num'})) {
1731: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1732: }
1733:
1734: return undef;
1735: }
1736:
1737: sub getsection {
1738: my ($udom,$unam,$courseid)=@_;
1739: my $cachetime=1800;
1740:
1741: my $hashid="$udom:$unam:$courseid";
1742: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1743: if (defined($cached)) { return $result; }
1744:
1745: my %Pending;
1746: my %Expired;
1747: #
1748: # Each role can either have not started yet (pending), be active,
1749: # or have expired.
1750: #
1751: # If there is an active role, we are done.
1752: #
1753: # If there is more than one role which has not started yet,
1754: # choose the one which will start sooner
1755: # If there is one role which has not started yet, return it.
1756: #
1757: # If there is more than one expired role, choose the one which ended last.
1758: # If there is a role which has expired, return it.
1759: #
1760: $courseid = &courseid_to_courseurl($courseid);
1761: my $extra = &freeze_escape({'skipcheck' => 1});
1762: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
1763: foreach my $key (keys(%roleshash)) {
1764: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1765: my $section=$1;
1766: if ($key eq $courseid.'_st') { $section=''; }
1767: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1768: my $now=time;
1769: if (defined($end) && $end && ($now > $end)) {
1770: $Expired{$end}=$section;
1771: next;
1772: }
1773: if (defined($start) && $start && ($now < $start)) {
1774: $Pending{$start}=$section;
1775: next;
1776: }
1777: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1778: }
1779: #
1780: # Presumedly there will be few matching roles from the above
1781: # loop and the sorting time will be negligible.
1782: if (scalar(keys(%Pending))) {
1783: my ($time) = sort {$a <=> $b} keys(%Pending);
1784: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1785: }
1786: if (scalar(keys(%Expired))) {
1787: my @sorted = sort {$a <=> $b} keys(%Expired);
1788: my $time = pop(@sorted);
1789: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1790: }
1791: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1792: }
1793:
1794: sub save_cache {
1795: &purge_remembered();
1796: #&Apache::loncommon::validate_page();
1797: undef(%env);
1798: undef($env_loaded);
1799: }
1800:
1801: my $to_remember=-1;
1802: my %remembered;
1803: my %accessed;
1804: my $kicks=0;
1805: my $hits=0;
1806: sub make_key {
1807: my ($name,$id) = @_;
1808: if (length($id) > 65
1809: && length(&escape($id)) > 200) {
1810: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1811: }
1812: return &escape($name.':'.$id);
1813: }
1814:
1815: sub devalidate_cache_new {
1816: my ($name,$id,$debug) = @_;
1817: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1818: $id=&make_key($name,$id);
1819: $memcache->delete($id);
1820: delete($remembered{$id});
1821: delete($accessed{$id});
1822: }
1823:
1824: sub is_cached_new {
1825: my ($name,$id,$debug) = @_;
1826: $id=&make_key($name,$id);
1827: if (exists($remembered{$id})) {
1828: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1829: $accessed{$id}=[&gettimeofday()];
1830: $hits++;
1831: return ($remembered{$id},1);
1832: }
1833: my $value = $memcache->get($id);
1834: if (!(defined($value))) {
1835: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1836: return (undef,undef);
1837: }
1838: if ($value eq '__undef__') {
1839: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1840: $value=undef;
1841: }
1842: &make_room($id,$value,$debug);
1843: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1844: return ($value,1);
1845: }
1846:
1847: sub do_cache_new {
1848: my ($name,$id,$value,$time,$debug) = @_;
1849: $id=&make_key($name,$id);
1850: my $setvalue=$value;
1851: if (!defined($setvalue)) {
1852: $setvalue='__undef__';
1853: }
1854: if (!defined($time) ) {
1855: $time=600;
1856: }
1857: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1858: my $result = $memcache->set($id,$setvalue,$time);
1859: if (! $result) {
1860: &logthis("caching of id -> $id failed");
1861: $memcache->disconnect_all();
1862: }
1863: # need to make a copy of $value
1864: &make_room($id,$value,$debug);
1865: return $value;
1866: }
1867:
1868: sub make_room {
1869: my ($id,$value,$debug)=@_;
1870:
1871: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1872: : $value;
1873: if ($to_remember<0) { return; }
1874: $accessed{$id}=[&gettimeofday()];
1875: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1876: my $to_kick;
1877: my $max_time=0;
1878: foreach my $other (keys(%accessed)) {
1879: if (&tv_interval($accessed{$other}) > $max_time) {
1880: $to_kick=$other;
1881: $max_time=&tv_interval($accessed{$other});
1882: }
1883: }
1884: delete($remembered{$to_kick});
1885: delete($accessed{$to_kick});
1886: $kicks++;
1887: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1888: return;
1889: }
1890:
1891: sub purge_remembered {
1892: #&logthis("Tossing ".scalar(keys(%remembered)));
1893: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1894: undef(%remembered);
1895: undef(%accessed);
1896: }
1897: # ------------------------------------- Read an entry from a user's environment
1898:
1899: sub userenvironment {
1900: my ($udom,$unam,@what)=@_;
1901: my $items;
1902: foreach my $item (@what) {
1903: $items.=&escape($item).'&';
1904: }
1905: $items=~s/\&$//;
1906: my %returnhash=();
1907: my $uhome = &homeserver($unam,$udom);
1908: unless ($uhome eq 'no_host') {
1909: my @answer=split(/\&/,
1910: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1911: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
1912: return %returnhash;
1913: }
1914: my $i;
1915: for ($i=0;$i<=$#what;$i++) {
1916: $returnhash{$what[$i]}=&unescape($answer[$i]);
1917: }
1918: }
1919: return %returnhash;
1920: }
1921:
1922: # ---------------------------------------------------------- Get a studentphoto
1923: sub studentphoto {
1924: my ($udom,$unam,$ext) = @_;
1925: my $home=&Apache::lonnet::homeserver($unam,$udom);
1926: if (defined($env{'request.course.id'})) {
1927: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1928: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1929: return(&retrievestudentphoto($udom,$unam,$ext));
1930: } else {
1931: my ($result,$perm_reqd)=
1932: &Apache::lonnet::auto_photo_permission($unam,$udom);
1933: if ($result eq 'ok') {
1934: if (!($perm_reqd eq 'yes')) {
1935: return(&retrievestudentphoto($udom,$unam,$ext));
1936: }
1937: }
1938: }
1939: }
1940: } else {
1941: my ($result,$perm_reqd) =
1942: &Apache::lonnet::auto_photo_permission($unam,$udom);
1943: if ($result eq 'ok') {
1944: if (!($perm_reqd eq 'yes')) {
1945: return(&retrievestudentphoto($udom,$unam,$ext));
1946: }
1947: }
1948: }
1949: return '/adm/lonKaputt/lonlogo_broken.gif';
1950: }
1951:
1952: sub retrievestudentphoto {
1953: my ($udom,$unam,$ext,$type) = @_;
1954: my $home=&Apache::lonnet::homeserver($unam,$udom);
1955: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1956: if ($ret eq 'ok') {
1957: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1958: if ($type eq 'thumbnail') {
1959: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1960: }
1961: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1962: return $tokenurl;
1963: } else {
1964: if ($type eq 'thumbnail') {
1965: return '/adm/lonKaputt/genericstudent_tn.gif';
1966: } else {
1967: return '/adm/lonKaputt/lonlogo_broken.gif';
1968: }
1969: }
1970: }
1971:
1972: # -------------------------------------------------------------------- New chat
1973:
1974: sub chatsend {
1975: my ($newentry,$anon,$group)=@_;
1976: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1977: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1978: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1979: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1980: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1981: &escape($newentry)).':'.$group,$chome);
1982: }
1983:
1984: # ------------------------------------------ Find current version of a resource
1985:
1986: sub getversion {
1987: my $fname=&clutter(shift);
1988: unless ($fname=~/^\/res\//) { return -1; }
1989: return ¤tversion(&filelocation('',$fname));
1990: }
1991:
1992: sub currentversion {
1993: my $fname=shift;
1994: my ($result,$cached)=&is_cached_new('resversion',$fname);
1995: if (defined($cached)) { return $result; }
1996: my $author=$fname;
1997: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1998: my ($udom,$uname)=split(/\//,$author);
1999: my $home=homeserver($uname,$udom);
2000: if ($home eq 'no_host') {
2001: return -1;
2002: }
2003: my $answer=reply("currentversion:$fname",$home);
2004: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2005: return -1;
2006: }
2007: return &do_cache_new('resversion',$fname,$answer,600);
2008: }
2009:
2010: # ----------------------------- Subscribe to a resource, return URL if possible
2011:
2012: sub subscribe {
2013: my $fname=shift;
2014: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2015: $fname=~s/[\n\r]//g;
2016: my $author=$fname;
2017: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2018: my ($udom,$uname)=split(/\//,$author);
2019: my $home=homeserver($uname,$udom);
2020: if ($home eq 'no_host') {
2021: return 'not_found';
2022: }
2023: my $answer=reply("sub:$fname",$home);
2024: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2025: $answer.=' by '.$home;
2026: }
2027: return $answer;
2028: }
2029:
2030: # -------------------------------------------------------------- Replicate file
2031:
2032: sub repcopy {
2033: my $filename=shift;
2034: $filename=~s/\/+/\//g;
2035: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2036: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2037: if ($filename=~m|^/home/httpd/html/userfiles/| or
2038: $filename=~m -^/*(uploaded|editupload)/-) {
2039: return &repcopy_userfile($filename);
2040: }
2041: $filename=~s/[\n\r]//g;
2042: my $transname="$filename.in.transfer";
2043: # FIXME: this should flock
2044: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2045: my $remoteurl=subscribe($filename);
2046: if ($remoteurl =~ /^con_lost by/) {
2047: &logthis("Subscribe returned $remoteurl: $filename");
2048: return 'unavailable';
2049: } elsif ($remoteurl eq 'not_found') {
2050: #&logthis("Subscribe returned not_found: $filename");
2051: return 'not_found';
2052: } elsif ($remoteurl =~ /^rejected by/) {
2053: &logthis("Subscribe returned $remoteurl: $filename");
2054: return 'forbidden';
2055: } elsif ($remoteurl eq 'directory') {
2056: return 'ok';
2057: } else {
2058: my $author=$filename;
2059: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2060: my ($udom,$uname)=split(/\//,$author);
2061: my $home=homeserver($uname,$udom);
2062: unless ($home eq $perlvar{'lonHostID'}) {
2063: my @parts=split(/\//,$filename);
2064: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2065: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2066: &logthis("Malconfiguration for replication: $filename");
2067: return 'bad_request';
2068: }
2069: my $count;
2070: for ($count=5;$count<$#parts;$count++) {
2071: $path.="/$parts[$count]";
2072: if ((-e $path)!=1) {
2073: mkdir($path,0777);
2074: }
2075: }
2076: my $ua=new LWP::UserAgent;
2077: my $request=new HTTP::Request('GET',"$remoteurl");
2078: my $response=$ua->request($request,$transname);
2079: if ($response->is_error()) {
2080: unlink($transname);
2081: my $message=$response->status_line;
2082: &logthis("<font color=\"blue\">WARNING:"
2083: ." LWP get: $message: $filename</font>");
2084: return 'unavailable';
2085: } else {
2086: if ($remoteurl!~/\.meta$/) {
2087: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2088: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2089: if ($mresponse->is_error()) {
2090: unlink($filename.'.meta');
2091: &logthis(
2092: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2093: }
2094: }
2095: rename($transname,$filename);
2096: return 'ok';
2097: }
2098: }
2099: }
2100: }
2101:
2102: # ------------------------------------------------ Get server side include body
2103: sub ssi_body {
2104: my ($filelink,%form)=@_;
2105: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2106: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2107: }
2108: my $output='';
2109: my $response;
2110: if ($filelink=~/^https?\:/) {
2111: ($output,$response)=&externalssi($filelink);
2112: } else {
2113: $filelink .= $filelink=~/\?/ ? '&' : '?';
2114: $filelink .= 'inhibitmenu=yes';
2115: ($output,$response)=&ssi($filelink,%form);
2116: }
2117: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2118: $output=~s/^.*?\<body[^\>]*\>//si;
2119: $output=~s/\<\/body\s*\>.*?$//si;
2120: if (wantarray) {
2121: return ($output, $response);
2122: } else {
2123: return $output;
2124: }
2125: }
2126:
2127: # --------------------------------------------------------- Server Side Include
2128:
2129: sub absolute_url {
2130: my ($host_name) = @_;
2131: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2132: if ($host_name eq '') {
2133: $host_name = $ENV{'SERVER_NAME'};
2134: }
2135: return $protocol.$host_name;
2136: }
2137:
2138: #
2139: # Server side include.
2140: # Parameters:
2141: # fn Possibly encrypted resource name/id.
2142: # form Hash that describes how the rendering should be done
2143: # and other things.
2144: # Returns:
2145: # Scalar context: The content of the response.
2146: # Array context: 2 element list of the content and the full response object.
2147: #
2148: sub ssi {
2149:
2150: my ($fn,%form)=@_;
2151: my $ua=new LWP::UserAgent;
2152: my $request;
2153:
2154: $form{'no_update_last_known'}=1;
2155: &Apache::lonenc::check_encrypt(\$fn);
2156: if (%form) {
2157: $request=new HTTP::Request('POST',&absolute_url().$fn);
2158: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2159: } else {
2160: $request=new HTTP::Request('GET',&absolute_url().$fn);
2161: }
2162:
2163: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2164: my $response=$ua->request($request);
2165:
2166: if (wantarray) {
2167: return ($response->content, $response);
2168: } else {
2169: return $response->content;
2170: }
2171: }
2172:
2173: sub externalssi {
2174: my ($url)=@_;
2175: my $ua=new LWP::UserAgent;
2176: my $request=new HTTP::Request('GET',$url);
2177: my $response=$ua->request($request);
2178: if (wantarray) {
2179: return ($response->content, $response);
2180: } else {
2181: return $response->content;
2182: }
2183: }
2184:
2185: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2186:
2187: sub allowuploaded {
2188: my ($srcurl,$url)=@_;
2189: $url=&clutter(&declutter($url));
2190: my $dir=$url;
2191: $dir=~s/\/[^\/]+$//;
2192: my %httpref=();
2193: my $httpurl=&hreflocation('',$url);
2194: $httpref{'httpref.'.$httpurl}=$srcurl;
2195: &Apache::lonnet::appenv(\%httpref);
2196: }
2197:
2198: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2199: # input: action, courseID, current domain, intended
2200: # path to file, source of file, instruction to parse file for objects,
2201: # ref to hash for embedded objects,
2202: # ref to hash for codebase of java objects.
2203: # reference to scalar to accommodate mime type determined
2204: # from File::MMagic if $parser = parse.
2205: #
2206: # output: url to file (if action was uploaddoc),
2207: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2208: #
2209: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2210: # course.
2211: #
2212: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2213: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2214: # course's home server.
2215: #
2216: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2217: # be copied from $source (current location) to
2218: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2219: # and will then be copied to
2220: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2221: # course's home server.
2222: #
2223: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2224: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2225: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2226: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2227: # in course's home server.
2228: #
2229:
2230: sub process_coursefile {
2231: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2232: $mimetype)=@_;
2233: my $fetchresult;
2234: my $home=&homeserver($docuname,$docudom);
2235: if ($action eq 'propagate') {
2236: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2237: $home);
2238: } else {
2239: my $fpath = '';
2240: my $fname = $file;
2241: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2242: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2243: my $filepath = &build_filepath($fpath);
2244: if ($action eq 'copy') {
2245: if ($source eq '') {
2246: $fetchresult = 'no source file';
2247: return $fetchresult;
2248: } else {
2249: my $destination = $filepath.'/'.$fname;
2250: rename($source,$destination);
2251: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2252: $home);
2253: }
2254: } elsif ($action eq 'uploaddoc') {
2255: open(my $fh,'>'.$filepath.'/'.$fname);
2256: print $fh $env{'form.'.$source};
2257: close($fh);
2258: if ($parser eq 'parse') {
2259: my $mm = new File::MMagic;
2260: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2261: if ($type eq 'text/html') {
2262: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2263: unless ($parse_result eq 'ok') {
2264: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2265: }
2266: }
2267: if (ref($mimetype)) {
2268: $$mimetype = $type;
2269: }
2270: }
2271: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2272: $home);
2273: if ($fetchresult eq 'ok') {
2274: return '/uploaded/'.$fpath.'/'.$fname;
2275: } else {
2276: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2277: ' to host '.$home.': '.$fetchresult);
2278: return '/adm/notfound.html';
2279: }
2280: }
2281: }
2282: unless ( $fetchresult eq 'ok') {
2283: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2284: ' to host '.$home.': '.$fetchresult);
2285: }
2286: return $fetchresult;
2287: }
2288:
2289: sub build_filepath {
2290: my ($fpath) = @_;
2291: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2292: unless ($fpath eq '') {
2293: my @parts=split('/',$fpath);
2294: foreach my $part (@parts) {
2295: $filepath.= '/'.$part;
2296: if ((-e $filepath)!=1) {
2297: mkdir($filepath,0777);
2298: }
2299: }
2300: }
2301: return $filepath;
2302: }
2303:
2304: sub store_edited_file {
2305: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2306: my $file = $primary_url;
2307: $file =~ s#^/uploaded/$docudom/$docuname/##;
2308: my $fpath = '';
2309: my $fname = $file;
2310: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2311: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2312: my $filepath = &build_filepath($fpath);
2313: open(my $fh,'>'.$filepath.'/'.$fname);
2314: print $fh $content;
2315: close($fh);
2316: my $home=&homeserver($docuname,$docudom);
2317: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2318: $home);
2319: if ($$fetchresult eq 'ok') {
2320: return '/uploaded/'.$fpath.'/'.$fname;
2321: } else {
2322: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2323: ' to host '.$home.': '.$$fetchresult);
2324: return '/adm/notfound.html';
2325: }
2326: }
2327:
2328: sub clean_filename {
2329: my ($fname,$args)=@_;
2330: # Replace Windows backslashes by forward slashes
2331: $fname=~s/\\/\//g;
2332: if (!$args->{'keep_path'}) {
2333: # Get rid of everything but the actual filename
2334: $fname=~s/^.*\/([^\/]+)$/$1/;
2335: }
2336: # Replace spaces by underscores
2337: $fname=~s/\s+/\_/g;
2338: # Replace all other weird characters by nothing
2339: $fname=~s{[^/\w\.\-]}{}g;
2340: # Replace all .\d. sequences with _\d. so they no longer look like version
2341: # numbers
2342: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2343: return $fname;
2344: }
2345: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2346: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2347: # image with the same aspect ratio as the original, but with dimensions which do
2348: # not exceed $resizewidth and $resizeheight.
2349:
2350: sub resizeImage {
2351: my ($img_path,$resizewidth,$resizeheight) = @_;
2352: my $ima = Image::Magick->new;
2353: my $resized;
2354: if (-e $img_path) {
2355: $ima->Read($img_path);
2356: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2357: my $width = $ima->Get('width');
2358: my $height = $ima->Get('height');
2359: if ($width > $resizewidth) {
2360: my $factor = $width/$resizewidth;
2361: my $newheight = $height/$factor;
2362: $ima->Scale(width=>$resizewidth,height=>$newheight);
2363: $resized = 1;
2364: }
2365: }
2366: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2367: my $width = $ima->Get('width');
2368: my $height = $ima->Get('height');
2369: if ($height > $resizeheight) {
2370: my $factor = $height/$resizeheight;
2371: my $newwidth = $width/$factor;
2372: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2373: $resized = 1;
2374: }
2375: }
2376: if ($resized) {
2377: $ima->Write($img_path);
2378: }
2379: }
2380: return;
2381: }
2382:
2383: # --------------- Take an uploaded file and put it into the userfiles directory
2384: # input: $formname - the contents of the file are in $env{"form.$formname"}
2385: # the desired filename is in $env{"form.$formname.filename"}
2386: # $context - possible values: coursedoc, existingfile, overwrite,
2387: # canceloverwrite, or ''.
2388: # if 'coursedoc': upload to the current course
2389: # if 'existingfile': write file to tmp/overwrites directory
2390: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2391: # $context is passed as argument to &finishuserfileupload
2392: # $subdir - directory in userfile to store the file into
2393: # $parser - instruction to parse file for objects ($parser = parse)
2394: # $allfiles - reference to hash for embedded objects
2395: # $codebase - reference to hash for codebase of java objects
2396: # $desuname - username for permanent storage of uploaded file
2397: # $dsetudom - domain for permanaent storage of uploaded file
2398: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2399: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2400: # $resizewidth - width (pixels) to which to resize uploaded image
2401: # $resizeheight - height (pixels) to which to resize uploaded image
2402: # $mimetype - reference to scalar to accommodate mime type determined
2403: # from File::MMagic if $parser = parse.
2404: #
2405: # output: url of file in userspace, or error: <message>
2406: # or /adm/notfound.html if failure to upload occurse
2407:
2408: sub userfileupload {
2409: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2410: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2411: if (!defined($subdir)) { $subdir='unknown'; }
2412: my $fname=$env{'form.'.$formname.'.filename'};
2413: $fname=&clean_filename($fname);
2414: # See if there is anything left
2415: unless ($fname) { return 'error: no uploaded file'; }
2416: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2417: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2418: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2419: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2420: my $now = time;
2421: my $filepath;
2422: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2423: $filepath = 'tmp/helprequests/'.$now;
2424: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2425: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2426: '_'.$env{'user.domain'}.'/pending';
2427: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2428: my ($docuname,$docudom);
2429: if ($destudom) {
2430: $docudom = $destudom;
2431: } else {
2432: $docudom = $env{'user.domain'};
2433: }
2434: if ($destuname) {
2435: $docuname = $destuname;
2436: } else {
2437: $docuname = $env{'user.name'};
2438: }
2439: if (exists($env{'form.group'})) {
2440: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2441: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2442: }
2443: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2444: if ($context eq 'canceloverwrite') {
2445: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2446: if (-e $tempfile) {
2447: my @info = stat($tempfile);
2448: if ($info[9] eq $env{'form.timestamp'}) {
2449: unlink($tempfile);
2450: }
2451: }
2452: return;
2453: }
2454: }
2455: # Create the directory if not present
2456: my @parts=split(/\//,$filepath);
2457: my $fullpath = $perlvar{'lonDaemons'};
2458: for (my $i=0;$i<@parts;$i++) {
2459: $fullpath .= '/'.$parts[$i];
2460: if ((-e $fullpath)!=1) {
2461: mkdir($fullpath,0777);
2462: }
2463: }
2464: open(my $fh,'>'.$fullpath.'/'.$fname);
2465: print $fh $env{'form.'.$formname};
2466: close($fh);
2467: if ($context eq 'existingfile') {
2468: my @info = stat($fullpath.'/'.$fname);
2469: return ($fullpath.'/'.$fname,$info[9]);
2470: } else {
2471: return $fullpath.'/'.$fname;
2472: }
2473: }
2474: if ($subdir eq 'scantron') {
2475: $fname = 'scantron_orig_'.$fname;
2476: } else {
2477: $fname="$subdir/$fname";
2478: }
2479: if ($context eq 'coursedoc') {
2480: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2481: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2482: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2483: return &finishuserfileupload($docuname,$docudom,
2484: $formname,$fname,$parser,$allfiles,
2485: $codebase,$thumbwidth,$thumbheight,
2486: $resizewidth,$resizeheight,$context,$mimetype);
2487: } else {
2488: $fname=$env{'form.folder'}.'/'.$fname;
2489: return &process_coursefile('uploaddoc',$docuname,$docudom,
2490: $fname,$formname,$parser,
2491: $allfiles,$codebase,$mimetype);
2492: }
2493: } elsif (defined($destuname)) {
2494: my $docuname=$destuname;
2495: my $docudom=$destudom;
2496: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2497: $parser,$allfiles,$codebase,
2498: $thumbwidth,$thumbheight,
2499: $resizewidth,$resizeheight,$context,$mimetype);
2500: } else {
2501: my $docuname=$env{'user.name'};
2502: my $docudom=$env{'user.domain'};
2503: if (exists($env{'form.group'})) {
2504: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2505: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2506: }
2507: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2508: $parser,$allfiles,$codebase,
2509: $thumbwidth,$thumbheight,
2510: $resizewidth,$resizeheight,$context,$mimetype);
2511: }
2512: }
2513:
2514: sub finishuserfileupload {
2515: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2516: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2517: my $path=$docudom.'/'.$docuname.'/';
2518: my $filepath=$perlvar{'lonDocRoot'};
2519:
2520: my ($fnamepath,$file,$fetchthumb);
2521: $file=$fname;
2522: if ($fname=~m|/|) {
2523: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2524: $path.=$fnamepath.'/';
2525: }
2526: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2527: my $count;
2528: for ($count=4;$count<=$#parts;$count++) {
2529: $filepath.="/$parts[$count]";
2530: if ((-e $filepath)!=1) {
2531: mkdir($filepath,0777);
2532: }
2533: }
2534:
2535: # Save the file
2536: {
2537: if (!open(FH,'>'.$filepath.'/'.$file)) {
2538: &logthis('Failed to create '.$filepath.'/'.$file);
2539: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2540: return '/adm/notfound.html';
2541: }
2542: if ($context eq 'overwrite') {
2543: my $source = $perlvar{'lonDaemons'}.'/tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2544: my $target = $filepath.'/'.$file;
2545: if (-e $source) {
2546: my @info = stat($source);
2547: if ($info[9] eq $env{'form.timestamp'}) {
2548: unless (&File::Copy::move($source,$target)) {
2549: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2550: return "Moving from $source failed";
2551: }
2552: } else {
2553: return "Temporary file: $source had unexpected date/time for last modification";
2554: }
2555: } else {
2556: return "Temporary file: $source missing";
2557: }
2558: } elsif (!print FH ($env{'form.'.$formname})) {
2559: &logthis('Failed to write to '.$filepath.'/'.$file);
2560: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2561: return '/adm/notfound.html';
2562: }
2563: close(FH);
2564: if ($resizewidth && $resizeheight) {
2565: my $mm = new File::MMagic;
2566: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2567: if ($mime_type =~ m{^image/}) {
2568: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2569: }
2570: }
2571: }
2572: if ($parser eq 'parse') {
2573: my $mm = new File::MMagic;
2574: my $type = $mm->checktype_filename($filepath.'/'.$file);
2575: if ($type eq 'text/html') {
2576: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2577: $allfiles,$codebase);
2578: unless ($parse_result eq 'ok') {
2579: &logthis('Failed to parse '.$filepath.$file.
2580: ' for embedded media: '.$parse_result);
2581: }
2582: }
2583: if (ref($mimetype)) {
2584: $$mimetype = $type;
2585: }
2586: }
2587: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2588: my $input = $filepath.'/'.$file;
2589: my $output = $filepath.'/'.'tn-'.$file;
2590: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2591: system("convert -sample $thumbsize $input $output");
2592: if (-e $filepath.'/'.'tn-'.$file) {
2593: $fetchthumb = 1;
2594: }
2595: }
2596:
2597: # Notify homeserver to grep it
2598: #
2599: my $docuhome=&homeserver($docuname,$docudom);
2600: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2601: if ($fetchresult eq 'ok') {
2602: if ($fetchthumb) {
2603: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2604: if ($thumbresult ne 'ok') {
2605: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2606: $docuhome.': '.$thumbresult);
2607: }
2608: }
2609: #
2610: # Return the URL to it
2611: return '/uploaded/'.$path.$file;
2612: } else {
2613: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2614: ': '.$fetchresult);
2615: return '/adm/notfound.html';
2616: }
2617: }
2618:
2619: sub extract_embedded_items {
2620: my ($fullpath,$allfiles,$codebase,$content) = @_;
2621: my @state = ();
2622: my %javafiles = (
2623: codebase => '',
2624: code => '',
2625: archive => ''
2626: );
2627: my %mediafiles = (
2628: src => '',
2629: movie => '',
2630: );
2631: my $p;
2632: if ($content) {
2633: $p = HTML::LCParser->new($content);
2634: } else {
2635: $p = HTML::LCParser->new($fullpath);
2636: }
2637: while (my $t=$p->get_token()) {
2638: if ($t->[0] eq 'S') {
2639: my ($tagname, $attr) = ($t->[1],$t->[2]);
2640: push(@state, $tagname);
2641: if (lc($tagname) eq 'allow') {
2642: &add_filetype($allfiles,$attr->{'src'},'src');
2643: }
2644: if (lc($tagname) eq 'img') {
2645: &add_filetype($allfiles,$attr->{'src'},'src');
2646: }
2647: if (lc($tagname) eq 'a') {
2648: &add_filetype($allfiles,$attr->{'href'},'href');
2649: }
2650: if (lc($tagname) eq 'script') {
2651: if ($attr->{'archive'} =~ /\.jar$/i) {
2652: &add_filetype($allfiles,$attr->{'archive'},'archive');
2653: } else {
2654: &add_filetype($allfiles,$attr->{'src'},'src');
2655: }
2656: }
2657: if (lc($tagname) eq 'link') {
2658: if (lc($attr->{'rel'}) eq 'stylesheet') {
2659: &add_filetype($allfiles,$attr->{'href'},'href');
2660: }
2661: }
2662: if (lc($tagname) eq 'object' ||
2663: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2664: foreach my $item (keys(%javafiles)) {
2665: $javafiles{$item} = '';
2666: }
2667: }
2668: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2669: my $name = lc($attr->{'name'});
2670: foreach my $item (keys(%javafiles)) {
2671: if ($name eq $item) {
2672: $javafiles{$item} = $attr->{'value'};
2673: last;
2674: }
2675: }
2676: foreach my $item (keys(%mediafiles)) {
2677: if ($name eq $item) {
2678: &add_filetype($allfiles, $attr->{'value'}, 'value');
2679: last;
2680: }
2681: }
2682: }
2683: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2684: foreach my $item (keys(%javafiles)) {
2685: if ($attr->{$item}) {
2686: $javafiles{$item} = $attr->{$item};
2687: last;
2688: }
2689: }
2690: foreach my $item (keys(%mediafiles)) {
2691: if ($attr->{$item}) {
2692: &add_filetype($allfiles,$attr->{$item},$item);
2693: last;
2694: }
2695: }
2696: }
2697: } elsif ($t->[0] eq 'E') {
2698: my ($tagname) = ($t->[1]);
2699: if ($javafiles{'codebase'} ne '') {
2700: $javafiles{'codebase'} .= '/';
2701: }
2702: if (lc($tagname) eq 'applet' ||
2703: lc($tagname) eq 'object' ||
2704: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2705: ) {
2706: foreach my $item (keys(%javafiles)) {
2707: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2708: my $file=$javafiles{'codebase'}.$javafiles{$item};
2709: &add_filetype($allfiles,$file,$item);
2710: }
2711: }
2712: }
2713: pop @state;
2714: }
2715: }
2716: return 'ok';
2717: }
2718:
2719: sub add_filetype {
2720: my ($allfiles,$file,$type)=@_;
2721: if (exists($allfiles->{$file})) {
2722: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2723: push(@{$allfiles->{$file}}, &escape($type));
2724: }
2725: } else {
2726: @{$allfiles->{$file}} = (&escape($type));
2727: }
2728: }
2729:
2730: sub removeuploadedurl {
2731: my ($url)=@_;
2732: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2733: return &removeuserfile($uname,$udom,$fname);
2734: }
2735:
2736: sub removeuserfile {
2737: my ($docuname,$docudom,$fname)=@_;
2738: my $home=&homeserver($docuname,$docudom);
2739: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2740: if ($result eq 'ok') {
2741: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2742: my $metafile = $fname.'.meta';
2743: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2744: my $url = "/uploaded/$docudom/$docuname/$fname";
2745: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2746: my $sqlresult =
2747: &update_portfolio_table($docuname,$docudom,$file,
2748: 'portfolio_metadata',$group,
2749: 'delete');
2750: }
2751: }
2752: return $result;
2753: }
2754:
2755: sub mkdiruserfile {
2756: my ($docuname,$docudom,$dir)=@_;
2757: my $home=&homeserver($docuname,$docudom);
2758: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2759: }
2760:
2761: sub renameuserfile {
2762: my ($docuname,$docudom,$old,$new)=@_;
2763: my $home=&homeserver($docuname,$docudom);
2764: my $result = &reply("renameuserfile:$docudom:$docuname:".
2765: &escape("$old").':'.&escape("$new"),$home);
2766: if ($result eq 'ok') {
2767: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2768: my $oldmeta = $old.'.meta';
2769: my $newmeta = $new.'.meta';
2770: my $metaresult =
2771: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2772: my $url = "/uploaded/$docudom/$docuname/$old";
2773: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2774: my $sqlresult =
2775: &update_portfolio_table($docuname,$docudom,$file,
2776: 'portfolio_metadata',$group,
2777: 'delete');
2778: }
2779: }
2780: return $result;
2781: }
2782:
2783: # ------------------------------------------------------------------------- Log
2784:
2785: sub log {
2786: my ($dom,$nam,$hom,$what)=@_;
2787: return critical("log:$dom:$nam:$what",$hom);
2788: }
2789:
2790: # ------------------------------------------------------------------ Course Log
2791: #
2792: # This routine flushes several buffers of non-mission-critical nature
2793: #
2794:
2795: sub flushcourselogs {
2796: &logthis('Flushing log buffers');
2797: #
2798: # course logs
2799: # This is a log of all transactions in a course, which can be used
2800: # for data mining purposes
2801: #
2802: # It also collects the courseid database, which lists last transaction
2803: # times and course titles for all courseids
2804: #
2805: my %courseidbuffer=();
2806: foreach my $crsid (keys(%courselogs)) {
2807: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2808: &escape($courselogs{$crsid}),
2809: $coursehombuf{$crsid}) eq 'ok') {
2810: delete $courselogs{$crsid};
2811: } else {
2812: &logthis('Failed to flush log buffer for '.$crsid);
2813: if (length($courselogs{$crsid})>40000) {
2814: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2815: " exceeded maximum size, deleting.</font>");
2816: delete $courselogs{$crsid};
2817: }
2818: }
2819: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2820: 'description' => $coursedescrbuf{$crsid},
2821: 'inst_code' => $courseinstcodebuf{$crsid},
2822: 'type' => $coursetypebuf{$crsid},
2823: 'owner' => $courseownerbuf{$crsid},
2824: };
2825: }
2826: #
2827: # Write course id database (reverse lookup) to homeserver of courses
2828: # Is used in pickcourse
2829: #
2830: foreach my $crs_home (keys(%courseidbuffer)) {
2831: my $response = &courseidput(&host_domain($crs_home),
2832: $courseidbuffer{$crs_home},
2833: $crs_home,'timeonly');
2834: }
2835: #
2836: # File accesses
2837: # Writes to the dynamic metadata of resources to get hit counts, etc.
2838: #
2839: foreach my $entry (keys(%accesshash)) {
2840: if ($entry =~ /___count$/) {
2841: my ($dom,$name);
2842: ($dom,$name,undef)=
2843: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2844: if (! defined($dom) || $dom eq '' ||
2845: ! defined($name) || $name eq '') {
2846: my $cid = $env{'request.course.id'};
2847: $dom = $env{'request.'.$cid.'.domain'};
2848: $name = $env{'request.'.$cid.'.num'};
2849: }
2850: my $value = $accesshash{$entry};
2851: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2852: my %temphash=($url => $value);
2853: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2854: if ($result eq 'ok') {
2855: delete $accesshash{$entry};
2856: } elsif ($result eq 'unknown_cmd') {
2857: # Target server has old code running on it.
2858: my %temphash=($entry => $value);
2859: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2860: delete $accesshash{$entry};
2861: }
2862: }
2863: } else {
2864: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2865: my %temphash=($entry => $accesshash{$entry});
2866: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2867: delete $accesshash{$entry};
2868: }
2869: }
2870: }
2871: #
2872: # Roles
2873: # Reverse lookup of user roles for course faculty/staff and co-authorship
2874: #
2875: foreach my $entry (keys(%userrolehash)) {
2876: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2877: split(/\:/,$entry);
2878: if (&Apache::lonnet::put('nohist_userroles',
2879: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2880: $rudom,$runame) eq 'ok') {
2881: delete $userrolehash{$entry};
2882: }
2883: }
2884: #
2885: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2886: #
2887: my %domrolebuffer = ();
2888: foreach my $entry (keys(%domainrolehash)) {
2889: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2890: if ($domrolebuffer{$rudom}) {
2891: $domrolebuffer{$rudom}.='&'.&escape($entry).
2892: '='.&escape($domainrolehash{$entry});
2893: } else {
2894: $domrolebuffer{$rudom}.=&escape($entry).
2895: '='.&escape($domainrolehash{$entry});
2896: }
2897: delete $domainrolehash{$entry};
2898: }
2899: foreach my $dom (keys(%domrolebuffer)) {
2900: my %servers = &get_servers($dom,'library');
2901: foreach my $tryserver (keys(%servers)) {
2902: unless (&reply('domroleput:'.$dom.':'.
2903: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2904: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2905: }
2906: }
2907: }
2908: $dumpcount++;
2909: }
2910:
2911: sub courselog {
2912: my $what=shift;
2913: $what=time.':'.$what;
2914: unless ($env{'request.course.id'}) { return ''; }
2915: $coursedombuf{$env{'request.course.id'}}=
2916: $env{'course.'.$env{'request.course.id'}.'.domain'};
2917: $coursenumbuf{$env{'request.course.id'}}=
2918: $env{'course.'.$env{'request.course.id'}.'.num'};
2919: $coursehombuf{$env{'request.course.id'}}=
2920: $env{'course.'.$env{'request.course.id'}.'.home'};
2921: $coursedescrbuf{$env{'request.course.id'}}=
2922: $env{'course.'.$env{'request.course.id'}.'.description'};
2923: $courseinstcodebuf{$env{'request.course.id'}}=
2924: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2925: $courseownerbuf{$env{'request.course.id'}}=
2926: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2927: $coursetypebuf{$env{'request.course.id'}}=
2928: $env{'course.'.$env{'request.course.id'}.'.type'};
2929: if (defined $courselogs{$env{'request.course.id'}}) {
2930: $courselogs{$env{'request.course.id'}}.='&'.$what;
2931: } else {
2932: $courselogs{$env{'request.course.id'}}.=$what;
2933: }
2934: if (length($courselogs{$env{'request.course.id'}})>4048) {
2935: &flushcourselogs();
2936: }
2937: }
2938:
2939: sub courseacclog {
2940: my $fnsymb=shift;
2941: unless ($env{'request.course.id'}) { return ''; }
2942: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2943: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2944: $what.=':POST';
2945: # FIXME: Probably ought to escape things....
2946: foreach my $key (keys(%env)) {
2947: if ($key=~/^form\.(.*)/) {
2948: my $formitem = $1;
2949: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2950: $what.=':'.$formitem.'='.$env{$key};
2951: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2952: $what.=':'.$formitem.'='.$env{$key};
2953: }
2954: }
2955: }
2956: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2957: # FIXME: We should not be depending on a form parameter that someone
2958: # editing lonsearchcat.pm might change in the future.
2959: if ($env{'form.phase'} eq 'course_search') {
2960: $what.= ':POST';
2961: # FIXME: Probably ought to escape things....
2962: foreach my $element ('courseexp','crsfulltext','crsrelated',
2963: 'crsdiscuss') {
2964: $what.=':'.$element.'='.$env{'form.'.$element};
2965: }
2966: }
2967: }
2968: &courselog($what);
2969: }
2970:
2971: sub countacc {
2972: my $url=&declutter(shift);
2973: return if (! defined($url) || $url eq '');
2974: unless ($env{'request.course.id'}) { return ''; }
2975: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2976: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2977: $accesshash{$key}++;
2978: }
2979:
2980: sub linklog {
2981: my ($from,$to)=@_;
2982: $from=&declutter($from);
2983: $to=&declutter($to);
2984: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2985: $accesshash{$to.'___'.$from.'___goto'}=1;
2986: }
2987:
2988: sub userrolelog {
2989: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2990: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2991: ($trole=~/^in/) || ($trole=~/^cc/) ||
2992: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2993: ($trole=~/^ta/) || ($trole=~/^co/)) {
2994: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2995: $userrolehash
2996: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2997: =$tend.':'.$tstart;
2998: }
2999: if (($env{'request.role'} =~ /dc\./) &&
3000: (($trole=~/^au/) || ($trole=~/^in/) ||
3001: ($trole=~/^cc/) || ($trole=~/^ep/) ||
3002: ($trole=~/^cr/) || ($trole=~/^ta/) ||
3003: ($trole=~/^co/))) {
3004: $userrolehash
3005: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3006: =$tend.':'.$tstart;
3007: }
3008: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
3009: ($trole=~/^li/) || ($trole=~/^li/) ||
3010: ($trole=~/^au/) || ($trole=~/^dg/) ||
3011: ($trole=~/^sc/)) {
3012: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3013: $domainrolehash
3014: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3015: = $tend.':'.$tstart;
3016: }
3017: }
3018:
3019: sub courserolelog {
3020: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3021: if (($trole eq 'cc') || ($trole eq 'in') ||
3022: ($trole eq 'ep') || ($trole eq 'ad') ||
3023: ($trole eq 'ta') || ($trole eq 'st') ||
3024: ($trole=~/^cr/) || ($trole eq 'gr') ||
3025: ($trole eq 'co')) {
3026: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3027: my $cdom = $1;
3028: my $cnum = $2;
3029: my $sec = $3;
3030: my $namespace = 'rolelog';
3031: my %storehash = (
3032: role => $trole,
3033: start => $tstart,
3034: end => $tend,
3035: selfenroll => $selfenroll,
3036: context => $context,
3037: );
3038: if ($trole eq 'gr') {
3039: $namespace = 'groupslog';
3040: $storehash{'group'} = $sec;
3041: } else {
3042: $storehash{'section'} = $sec;
3043: }
3044: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3045: if (($trole ne 'st') || ($sec ne '')) {
3046: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3047: }
3048: }
3049: }
3050: return;
3051: }
3052:
3053: sub get_course_adv_roles {
3054: my ($cid,$codes) = @_;
3055: $cid=$env{'request.course.id'} unless (defined($cid));
3056: my %coursehash=&coursedescription($cid);
3057: my $crstype = &Apache::loncommon::course_type($cid);
3058: my %nothide=();
3059: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3060: if ($user !~ /:/) {
3061: $nothide{join(':',split(/[\@]/,$user))}=1;
3062: } else {
3063: $nothide{$user}=1;
3064: }
3065: }
3066: my %returnhash=();
3067: my %dumphash=
3068: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3069: my $now=time;
3070: my %privileged;
3071: foreach my $entry (keys(%dumphash)) {
3072: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3073: if (($tstart) && ($tstart<0)) { next; }
3074: if (($tend) && ($tend<$now)) { next; }
3075: if (($tstart) && ($now<$tstart)) { next; }
3076: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3077: if ($username eq '' || $domain eq '') { next; }
3078: unless (ref($privileged{$domain}) eq 'HASH') {
3079: my %dompersonnel =
3080: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3081: $privileged{$domain} = {};
3082: foreach my $server (keys(%dompersonnel)) {
3083: if (ref($dompersonnel{$server}) eq 'HASH') {
3084: foreach my $user (keys(%{$dompersonnel{$server}})) {
3085: my ($trole,$uname,$udom) = split(/:/,$user);
3086: $privileged{$udom}{$uname} = 1;
3087: }
3088: }
3089: }
3090: }
3091: if ((exists($privileged{$domain}{$username})) &&
3092: (!$nothide{$username.':'.$domain})) { next; }
3093: if ($role eq 'cr') { next; }
3094: if ($codes) {
3095: if ($section) { $role .= ':'.$section; }
3096: if ($returnhash{$role}) {
3097: $returnhash{$role}.=','.$username.':'.$domain;
3098: } else {
3099: $returnhash{$role}=$username.':'.$domain;
3100: }
3101: } else {
3102: my $key=&plaintext($role,$crstype);
3103: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3104: if ($returnhash{$key}) {
3105: $returnhash{$key}.=','.$username.':'.$domain;
3106: } else {
3107: $returnhash{$key}=$username.':'.$domain;
3108: }
3109: }
3110: }
3111: return %returnhash;
3112: }
3113:
3114: sub get_my_roles {
3115: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3116: unless (defined($uname)) { $uname=$env{'user.name'}; }
3117: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3118: my (%dumphash,%nothide);
3119: if ($context eq 'userroles') {
3120: my $extra = &freeze_escape({'skipcheck' => 1});
3121: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3122: } else {
3123: %dumphash=
3124: &dump('nohist_userroles',$udom,$uname);
3125: if ($hidepriv) {
3126: my %coursehash=&coursedescription($udom.'_'.$uname);
3127: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3128: if ($user !~ /:/) {
3129: $nothide{join(':',split(/[\@]/,$user))} = 1;
3130: } else {
3131: $nothide{$user} = 1;
3132: }
3133: }
3134: }
3135: }
3136: my %returnhash=();
3137: my $now=time;
3138: my %privileged;
3139: foreach my $entry (keys(%dumphash)) {
3140: my ($role,$tend,$tstart);
3141: if ($context eq 'userroles') {
3142: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3143: } else {
3144: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3145: }
3146: if (($tstart) && ($tstart<0)) { next; }
3147: my $status = 'active';
3148: if (($tend) && ($tend<=$now)) {
3149: $status = 'previous';
3150: }
3151: if (($tstart) && ($now<$tstart)) {
3152: $status = 'future';
3153: }
3154: if (ref($types) eq 'ARRAY') {
3155: if (!grep(/^\Q$status\E$/,@{$types})) {
3156: next;
3157: }
3158: } else {
3159: if ($status ne 'active') {
3160: next;
3161: }
3162: }
3163: my ($rolecode,$username,$domain,$section,$area);
3164: if ($context eq 'userroles') {
3165: ($area,$rolecode) = split(/_/,$entry);
3166: (undef,$domain,$username,$section) = split(/\//,$area);
3167: } else {
3168: ($role,$username,$domain,$section) = split(/\:/,$entry);
3169: }
3170: if (ref($roledoms) eq 'ARRAY') {
3171: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3172: next;
3173: }
3174: }
3175: if (ref($roles) eq 'ARRAY') {
3176: if (!grep(/^\Q$role\E$/,@{$roles})) {
3177: if ($role =~ /^cr\//) {
3178: if (!grep(/^cr$/,@{$roles})) {
3179: next;
3180: }
3181: } else {
3182: next;
3183: }
3184: }
3185: }
3186: if ($hidepriv) {
3187: if ($context eq 'userroles') {
3188: if ((&privileged($username,$domain)) &&
3189: (!$nothide{$username.':'.$domain})) {
3190: next;
3191: }
3192: } else {
3193: unless (ref($privileged{$domain}) eq 'HASH') {
3194: my %dompersonnel =
3195: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3196: $privileged{$domain} = {};
3197: if (keys(%dompersonnel)) {
3198: foreach my $server (keys(%dompersonnel)) {
3199: if (ref($dompersonnel{$server}) eq 'HASH') {
3200: foreach my $user (keys(%{$dompersonnel{$server}})) {
3201: my ($trole,$uname,$udom) = split(/:/,$user);
3202: $privileged{$udom}{$uname} = $trole;
3203: }
3204: }
3205: }
3206: }
3207: }
3208: if (exists($privileged{$domain}{$username})) {
3209: if (!$nothide{$username.':'.$domain}) {
3210: next;
3211: }
3212: }
3213: }
3214: }
3215: if ($withsec) {
3216: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3217: $tstart.':'.$tend;
3218: } else {
3219: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3220: }
3221: }
3222: return %returnhash;
3223: }
3224:
3225: # ----------------------------------------------------- Frontpage Announcements
3226: #
3227: #
3228:
3229: sub postannounce {
3230: my ($server,$text)=@_;
3231: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3232: unless ($text=~/\w/) { $text=''; }
3233: return &reply('setannounce:'.&escape($text),$server);
3234: }
3235:
3236: sub getannounce {
3237:
3238: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3239: my $announcement='';
3240: while (my $line = <$fh>) { $announcement .= $line; }
3241: close($fh);
3242: if ($announcement=~/\w/) {
3243: return
3244: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3245: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3246: } else {
3247: return '';
3248: }
3249: } else {
3250: return '';
3251: }
3252: }
3253:
3254: # ---------------------------------------------------------- Course ID routines
3255: # Deal with domain's nohist_courseid.db files
3256: #
3257:
3258: sub courseidput {
3259: my ($domain,$storehash,$coursehome,$caller) = @_;
3260: return unless (ref($storehash) eq 'HASH');
3261: my $outcome;
3262: if ($caller eq 'timeonly') {
3263: my $cids = '';
3264: foreach my $item (keys(%$storehash)) {
3265: $cids.=&escape($item).'&';
3266: }
3267: $cids=~s/\&$//;
3268: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3269: $coursehome);
3270: } else {
3271: my $items = '';
3272: foreach my $item (keys(%$storehash)) {
3273: $items.= &escape($item).'='.
3274: &freeze_escape($$storehash{$item}).'&';
3275: }
3276: $items=~s/\&$//;
3277: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3278: $coursehome);
3279: }
3280: if ($outcome eq 'unknown_cmd') {
3281: my $what;
3282: foreach my $cid (keys(%$storehash)) {
3283: $what .= &escape($cid).'=';
3284: foreach my $item ('description','inst_code','owner','type') {
3285: $what .= &escape($storehash->{$cid}{$item}).':';
3286: }
3287: $what =~ s/\:$/&/;
3288: }
3289: $what =~ s/\&$//;
3290: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3291: } else {
3292: return $outcome;
3293: }
3294: }
3295:
3296: sub courseiddump {
3297: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3298: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3299: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3300: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3301: my $as_hash = 1;
3302: my %returnhash;
3303: if (!$domfilter) { $domfilter=''; }
3304: my %libserv = &all_library();
3305: foreach my $tryserver (keys(%libserv)) {
3306: if ( ( $hostidflag == 1
3307: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3308: || (!defined($hostidflag)) ) {
3309:
3310: if (($domfilter eq '') ||
3311: (&host_domain($tryserver) eq $domfilter)) {
3312: my $rep =
3313: &reply('courseiddump:'.&host_domain($tryserver).':'.
3314: $sincefilter.':'.&escape($descfilter).':'.
3315: &escape($instcodefilter).':'.&escape($ownerfilter).
3316: ':'.&escape($coursefilter).':'.&escape($typefilter).
3317: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3318: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3319: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3320: &escape($cc_clone).':'.$cloneonly.':'.
3321: &escape($createdbefore).':'.&escape($createdafter).':'.
3322: &escape($creationcontext).':'.$domcloner,
3323: $tryserver);
3324: my @pairs=split(/\&/,$rep);
3325: foreach my $item (@pairs) {
3326: my ($key,$value)=split(/\=/,$item,2);
3327: $key = &unescape($key);
3328: next if ($key =~ /^error: 2 /);
3329: my $result = &thaw_unescape($value);
3330: if (ref($result) eq 'HASH') {
3331: $returnhash{$key}=$result;
3332: } else {
3333: my @responses = split(/:/,$value);
3334: my @items = ('description','inst_code','owner','type');
3335: for (my $i=0; $i<@responses; $i++) {
3336: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3337: }
3338: }
3339: }
3340: }
3341: }
3342: }
3343: return %returnhash;
3344: }
3345:
3346: sub courselastaccess {
3347: my ($cdom,$cnum,$hostidref) = @_;
3348: my %returnhash;
3349: if ($cdom && $cnum) {
3350: my $chome = &homeserver($cnum,$cdom);
3351: if ($chome ne 'no_host') {
3352: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3353: &extract_lastaccess(\%returnhash,$rep);
3354: }
3355: } else {
3356: if (!$cdom) { $cdom=''; }
3357: my %libserv = &all_library();
3358: foreach my $tryserver (keys(%libserv)) {
3359: if (ref($hostidref) eq 'ARRAY') {
3360: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3361: }
3362: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3363: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3364: &extract_lastaccess(\%returnhash,$rep);
3365: }
3366: }
3367: }
3368: return %returnhash;
3369: }
3370:
3371: sub extract_lastaccess {
3372: my ($returnhash,$rep) = @_;
3373: if (ref($returnhash) eq 'HASH') {
3374: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3375: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3376: $rep eq '') {
3377: my @pairs=split(/\&/,$rep);
3378: foreach my $item (@pairs) {
3379: my ($key,$value)=split(/\=/,$item,2);
3380: $key = &unescape($key);
3381: next if ($key =~ /^error: 2 /);
3382: $returnhash->{$key} = &thaw_unescape($value);
3383: }
3384: }
3385: }
3386: return;
3387: }
3388:
3389: # ---------------------------------------------------------- DC e-mail
3390:
3391: sub dcmailput {
3392: my ($domain,$msgid,$message,$server)=@_;
3393: my $status = &Apache::lonnet::critical(
3394: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3395: &escape($message),$server);
3396: return $status;
3397: }
3398:
3399: sub dcmaildump {
3400: my ($dom,$startdate,$enddate,$senders) = @_;
3401: my %returnhash=();
3402:
3403: if (defined(&domain($dom,'primary'))) {
3404: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3405: &escape($enddate).':';
3406: my @esc_senders=map { &escape($_)} @$senders;
3407: $cmd.=&escape(join('&',@esc_senders));
3408: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3409: my ($key,$value) = split(/\=/,$line,2);
3410: if (($key) && ($value)) {
3411: $returnhash{&unescape($key)} = &unescape($value);
3412: }
3413: }
3414: }
3415: return %returnhash;
3416: }
3417: # ---------------------------------------------------------- Domain roles
3418:
3419: sub get_domain_roles {
3420: my ($dom,$roles,$startdate,$enddate)=@_;
3421: if ((!defined($startdate)) || ($startdate eq '')) {
3422: $startdate = '.';
3423: }
3424: if ((!defined($enddate)) || ($enddate eq '')) {
3425: $enddate = '.';
3426: }
3427: my $rolelist;
3428: if (ref($roles) eq 'ARRAY') {
3429: $rolelist = join(':',@{$roles});
3430: }
3431: my %personnel = ();
3432:
3433: my %servers = &get_servers($dom,'library');
3434: foreach my $tryserver (keys(%servers)) {
3435: %{$personnel{$tryserver}}=();
3436: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3437: &escape($startdate).':'.
3438: &escape($enddate).':'.
3439: &escape($rolelist), $tryserver))) {
3440: my ($key,$value) = split(/\=/,$line,2);
3441: if (($key) && ($value)) {
3442: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3443: }
3444: }
3445: }
3446: return %personnel;
3447: }
3448:
3449: # ----------------------------------------------------------- Check out an item
3450:
3451: sub get_first_access {
3452: my ($type,$argsymb)=@_;
3453: my ($symb,$courseid,$udom,$uname)=&whichuser();
3454: if ($argsymb) { $symb=$argsymb; }
3455: my ($map,$id,$res)=&decode_symb($symb);
3456: if ($type eq 'course') {
3457: $res='course';
3458: } elsif ($type eq 'map') {
3459: $res=&symbread($map);
3460: } else {
3461: $res=$symb;
3462: }
3463: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3464: return $times{"$courseid\0$res"};
3465: }
3466:
3467: sub set_first_access {
3468: my ($type)=@_;
3469: my ($symb,$courseid,$udom,$uname)=&whichuser();
3470: my ($map,$id,$res)=&decode_symb($symb);
3471: if ($type eq 'course') {
3472: $res='course';
3473: } elsif ($type eq 'map') {
3474: $res=&symbread($map);
3475: } else {
3476: $res=$symb;
3477: }
3478: my $firstaccess=&get_first_access($type,$symb);
3479: if (!$firstaccess) {
3480: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3481: }
3482: return 'already_set';
3483: }
3484:
3485: sub checkout {
3486: my ($symb,$tuname,$tudom,$tcrsid)=@_;
3487: my $now=time;
3488: my $lonhost=$perlvar{'lonHostID'};
3489: my $infostr=&escape(
3490: 'CHECKOUTTOKEN&'.
3491: $tuname.'&'.
3492: $tudom.'&'.
3493: $tcrsid.'&'.
3494: $symb.'&'.
3495: $now.'&'.$ENV{'REMOTE_ADDR'});
3496: my $token=&reply('tmpput:'.$infostr,$lonhost);
3497: if ($token=~/^error\:/) {
3498: &logthis("<font color=\"blue\">WARNING: ".
3499: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
3500: "</font>");
3501: return '';
3502: }
3503:
3504: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
3505: $token=~tr/a-z/A-Z/;
3506:
3507: my %infohash=('resource.0.outtoken' => $token,
3508: 'resource.0.checkouttime' => $now,
3509: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
3510:
3511: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3512: return '';
3513: } else {
3514: &logthis("<font color=\"blue\">WARNING: ".
3515: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
3516: "</font>");
3517: }
3518:
3519: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3520: &escape('Checkout '.$infostr.' - '.
3521: $token)) ne 'ok') {
3522: return '';
3523: } else {
3524: &logthis("<font color=\"blue\">WARNING: ".
3525: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
3526: "</font>");
3527: }
3528: return $token;
3529: }
3530:
3531: # ------------------------------------------------------------ Check in an item
3532:
3533: sub checkin {
3534: my $token=shift;
3535: my $now=time;
3536: my ($ta,$tb,$lonhost)=split(/\*/,$token);
3537: $lonhost=~tr/A-Z/a-z/;
3538: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
3539: $dtoken=~s/\W/\_/g;
3540: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
3541: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
3542:
3543: unless (($tuname) && ($tudom)) {
3544: &logthis('Check in '.$token.' ('.$dtoken.') failed');
3545: return '';
3546: }
3547:
3548: unless (&allowed('mgr',$tcrsid)) {
3549: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
3550: $env{'user.name'}.' - '.$env{'user.domain'});
3551: return '';
3552: }
3553:
3554: my %infohash=('resource.0.intoken' => $token,
3555: 'resource.0.checkintime' => $now,
3556: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
3557:
3558: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
3559: return '';
3560: }
3561:
3562: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
3563: &escape('Checkin - '.$token)) ne 'ok') {
3564: return '';
3565: }
3566:
3567: return ($symb,$tuname,$tudom,$tcrsid);
3568: }
3569:
3570: # --------------------------------------------- Set Expire Date for Spreadsheet
3571:
3572: sub expirespread {
3573: my ($uname,$udom,$stype,$usymb)=@_;
3574: my $cid=$env{'request.course.id'};
3575: if ($cid) {
3576: my $now=time;
3577: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3578: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3579: $env{'course.'.$cid.'.num'}.
3580: ':nohist_expirationdates:'.
3581: &escape($key).'='.$now,
3582: $env{'course.'.$cid.'.home'})
3583: }
3584: return 'ok';
3585: }
3586:
3587: # ----------------------------------------------------- Devalidate Spreadsheets
3588:
3589: sub devalidate {
3590: my ($symb,$uname,$udom)=@_;
3591: my $cid=$env{'request.course.id'};
3592: if ($cid) {
3593: # delete the stored spreadsheets for
3594: # - the student level sheet of this user in course's homespace
3595: # - the assessment level sheet for this resource
3596: # for this user in user's homespace
3597: # - current conditional state info
3598: my $key=$uname.':'.$udom.':';
3599: my $status=
3600: &del('nohist_calculatedsheets',
3601: [$key.'studentcalc:'],
3602: $env{'course.'.$cid.'.domain'},
3603: $env{'course.'.$cid.'.num'})
3604: .' '.
3605: &del('nohist_calculatedsheets_'.$cid,
3606: [$key.'assesscalc:'.$symb],$udom,$uname);
3607: unless ($status eq 'ok ok') {
3608: &logthis('Could not devalidate spreadsheet '.
3609: $uname.' at '.$udom.' for '.
3610: $symb.': '.$status);
3611: }
3612: &delenv('user.state.'.$cid);
3613: }
3614: }
3615:
3616: sub get_scalar {
3617: my ($string,$end) = @_;
3618: my $value;
3619: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3620: $value = $1;
3621: } elsif ($$string =~ s/^([^&]*?)&//) {
3622: $value = $1;
3623: }
3624: return &unescape($value);
3625: }
3626:
3627: sub array2str {
3628: my (@array) = @_;
3629: my $result=&arrayref2str(\@array);
3630: $result=~s/^__ARRAY_REF__//;
3631: $result=~s/__END_ARRAY_REF__$//;
3632: return $result;
3633: }
3634:
3635: sub arrayref2str {
3636: my ($arrayref) = @_;
3637: my $result='__ARRAY_REF__';
3638: foreach my $elem (@$arrayref) {
3639: if(ref($elem) eq 'ARRAY') {
3640: $result.=&arrayref2str($elem).'&';
3641: } elsif(ref($elem) eq 'HASH') {
3642: $result.=&hashref2str($elem).'&';
3643: } elsif(ref($elem)) {
3644: #print("Got a ref of ".(ref($elem))." skipping.");
3645: } else {
3646: $result.=&escape($elem).'&';
3647: }
3648: }
3649: $result=~s/\&$//;
3650: $result .= '__END_ARRAY_REF__';
3651: return $result;
3652: }
3653:
3654: sub hash2str {
3655: my (%hash) = @_;
3656: my $result=&hashref2str(\%hash);
3657: $result=~s/^__HASH_REF__//;
3658: $result=~s/__END_HASH_REF__$//;
3659: return $result;
3660: }
3661:
3662: sub hashref2str {
3663: my ($hashref)=@_;
3664: my $result='__HASH_REF__';
3665: foreach my $key (sort(keys(%$hashref))) {
3666: if (ref($key) eq 'ARRAY') {
3667: $result.=&arrayref2str($key).'=';
3668: } elsif (ref($key) eq 'HASH') {
3669: $result.=&hashref2str($key).'=';
3670: } elsif (ref($key)) {
3671: $result.='=';
3672: #print("Got a ref of ".(ref($key))." skipping.");
3673: } else {
3674: if ($key) {$result.=&escape($key).'=';} else { last; }
3675: }
3676:
3677: if(ref($hashref->{$key}) eq 'ARRAY') {
3678: $result.=&arrayref2str($hashref->{$key}).'&';
3679: } elsif(ref($hashref->{$key}) eq 'HASH') {
3680: $result.=&hashref2str($hashref->{$key}).'&';
3681: } elsif(ref($hashref->{$key})) {
3682: $result.='&';
3683: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3684: } else {
3685: $result.=&escape($hashref->{$key}).'&';
3686: }
3687: }
3688: $result=~s/\&$//;
3689: $result .= '__END_HASH_REF__';
3690: return $result;
3691: }
3692:
3693: sub str2hash {
3694: my ($string)=@_;
3695: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3696: return %$hash;
3697: }
3698:
3699: sub str2hashref {
3700: my ($string) = @_;
3701:
3702: my %hash;
3703:
3704: if($string !~ /^__HASH_REF__/) {
3705: if (! ($string eq '' || !defined($string))) {
3706: $hash{'error'}='Not hash reference';
3707: }
3708: return (\%hash, $string);
3709: }
3710:
3711: $string =~ s/^__HASH_REF__//;
3712:
3713: while($string !~ /^__END_HASH_REF__/) {
3714: #key
3715: my $key='';
3716: if($string =~ /^__HASH_REF__/) {
3717: ($key, $string)=&str2hashref($string);
3718: if(defined($key->{'error'})) {
3719: $hash{'error'}='Bad data';
3720: return (\%hash, $string);
3721: }
3722: } elsif($string =~ /^__ARRAY_REF__/) {
3723: ($key, $string)=&str2arrayref($string);
3724: if($key->[0] eq 'Array reference error') {
3725: $hash{'error'}='Bad data';
3726: return (\%hash, $string);
3727: }
3728: } else {
3729: $string =~ s/^(.*?)=//;
3730: $key=&unescape($1);
3731: }
3732: $string =~ s/^=//;
3733:
3734: #value
3735: my $value='';
3736: if($string =~ /^__HASH_REF__/) {
3737: ($value, $string)=&str2hashref($string);
3738: if(defined($value->{'error'})) {
3739: $hash{'error'}='Bad data';
3740: return (\%hash, $string);
3741: }
3742: } elsif($string =~ /^__ARRAY_REF__/) {
3743: ($value, $string)=&str2arrayref($string);
3744: if($value->[0] eq 'Array reference error') {
3745: $hash{'error'}='Bad data';
3746: return (\%hash, $string);
3747: }
3748: } else {
3749: $value=&get_scalar(\$string,'__END_HASH_REF__');
3750: }
3751: $string =~ s/^&//;
3752:
3753: $hash{$key}=$value;
3754: }
3755:
3756: $string =~ s/^__END_HASH_REF__//;
3757:
3758: return (\%hash, $string);
3759: }
3760:
3761: sub str2array {
3762: my ($string)=@_;
3763: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3764: return @$array;
3765: }
3766:
3767: sub str2arrayref {
3768: my ($string) = @_;
3769: my @array;
3770:
3771: if($string !~ /^__ARRAY_REF__/) {
3772: if (! ($string eq '' || !defined($string))) {
3773: $array[0]='Array reference error';
3774: }
3775: return (\@array, $string);
3776: }
3777:
3778: $string =~ s/^__ARRAY_REF__//;
3779:
3780: while($string !~ /^__END_ARRAY_REF__/) {
3781: my $value='';
3782: if($string =~ /^__HASH_REF__/) {
3783: ($value, $string)=&str2hashref($string);
3784: if(defined($value->{'error'})) {
3785: $array[0] ='Array reference error';
3786: return (\@array, $string);
3787: }
3788: } elsif($string =~ /^__ARRAY_REF__/) {
3789: ($value, $string)=&str2arrayref($string);
3790: if($value->[0] eq 'Array reference error') {
3791: $array[0] ='Array reference error';
3792: return (\@array, $string);
3793: }
3794: } else {
3795: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3796: }
3797: $string =~ s/^&//;
3798:
3799: push(@array, $value);
3800: }
3801:
3802: $string =~ s/^__END_ARRAY_REF__//;
3803:
3804: return (\@array, $string);
3805: }
3806:
3807: # -------------------------------------------------------------------Temp Store
3808:
3809: sub tmpreset {
3810: my ($symb,$namespace,$domain,$stuname) = @_;
3811: if (!$symb) {
3812: $symb=&symbread();
3813: if (!$symb) { $symb= $env{'request.url'}; }
3814: }
3815: $symb=escape($symb);
3816:
3817: if (!$namespace) { $namespace=$env{'request.state'}; }
3818: $namespace=~s/\//\_/g;
3819: $namespace=~s/\W//g;
3820:
3821: if (!$domain) { $domain=$env{'user.domain'}; }
3822: if (!$stuname) { $stuname=$env{'user.name'}; }
3823: if ($domain eq 'public' && $stuname eq 'public') {
3824: $stuname=$ENV{'REMOTE_ADDR'};
3825: }
3826: my $path=$perlvar{'lonDaemons'}.'/tmp';
3827: my %hash;
3828: if (tie(%hash,'GDBM_File',
3829: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3830: &GDBM_WRCREAT(),0640)) {
3831: foreach my $key (keys(%hash)) {
3832: if ($key=~ /:$symb/) {
3833: delete($hash{$key});
3834: }
3835: }
3836: }
3837: }
3838:
3839: sub tmpstore {
3840: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3841:
3842: if (!$symb) {
3843: $symb=&symbread();
3844: if (!$symb) { $symb= $env{'request.url'}; }
3845: }
3846: $symb=escape($symb);
3847:
3848: if (!$namespace) {
3849: # I don't think we would ever want to store this for a course.
3850: # it seems this will only be used if we don't have a course.
3851: #$namespace=$env{'request.course.id'};
3852: #if (!$namespace) {
3853: $namespace=$env{'request.state'};
3854: #}
3855: }
3856: $namespace=~s/\//\_/g;
3857: $namespace=~s/\W//g;
3858: if (!$domain) { $domain=$env{'user.domain'}; }
3859: if (!$stuname) { $stuname=$env{'user.name'}; }
3860: if ($domain eq 'public' && $stuname eq 'public') {
3861: $stuname=$ENV{'REMOTE_ADDR'};
3862: }
3863: my $now=time;
3864: my %hash;
3865: my $path=$perlvar{'lonDaemons'}.'/tmp';
3866: if (tie(%hash,'GDBM_File',
3867: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3868: &GDBM_WRCREAT(),0640)) {
3869: $hash{"version:$symb"}++;
3870: my $version=$hash{"version:$symb"};
3871: my $allkeys='';
3872: foreach my $key (keys(%$storehash)) {
3873: $allkeys.=$key.':';
3874: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3875: }
3876: $hash{"$version:$symb:timestamp"}=$now;
3877: $allkeys.='timestamp';
3878: $hash{"$version:keys:$symb"}=$allkeys;
3879: if (untie(%hash)) {
3880: return 'ok';
3881: } else {
3882: return "error:$!";
3883: }
3884: } else {
3885: return "error:$!";
3886: }
3887: }
3888:
3889: # -----------------------------------------------------------------Temp Restore
3890:
3891: sub tmprestore {
3892: my ($symb,$namespace,$domain,$stuname) = @_;
3893:
3894: if (!$symb) {
3895: $symb=&symbread();
3896: if (!$symb) { $symb= $env{'request.url'}; }
3897: }
3898: $symb=escape($symb);
3899:
3900: if (!$namespace) { $namespace=$env{'request.state'}; }
3901:
3902: if (!$domain) { $domain=$env{'user.domain'}; }
3903: if (!$stuname) { $stuname=$env{'user.name'}; }
3904: if ($domain eq 'public' && $stuname eq 'public') {
3905: $stuname=$ENV{'REMOTE_ADDR'};
3906: }
3907: my %returnhash;
3908: $namespace=~s/\//\_/g;
3909: $namespace=~s/\W//g;
3910: my %hash;
3911: my $path=$perlvar{'lonDaemons'}.'/tmp';
3912: if (tie(%hash,'GDBM_File',
3913: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3914: &GDBM_READER(),0640)) {
3915: my $version=$hash{"version:$symb"};
3916: $returnhash{'version'}=$version;
3917: my $scope;
3918: for ($scope=1;$scope<=$version;$scope++) {
3919: my $vkeys=$hash{"$scope:keys:$symb"};
3920: my @keys=split(/:/,$vkeys);
3921: my $key;
3922: $returnhash{"$scope:keys"}=$vkeys;
3923: foreach $key (@keys) {
3924: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3925: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3926: }
3927: }
3928: if (!(untie(%hash))) {
3929: return "error:$!";
3930: }
3931: } else {
3932: return "error:$!";
3933: }
3934: return %returnhash;
3935: }
3936:
3937: # ----------------------------------------------------------------------- Store
3938:
3939: sub store {
3940: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3941: my $home='';
3942:
3943: if ($stuname) { $home=&homeserver($stuname,$domain); }
3944:
3945: $symb=&symbclean($symb);
3946: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3947:
3948: if (!$domain) { $domain=$env{'user.domain'}; }
3949: if (!$stuname) { $stuname=$env{'user.name'}; }
3950:
3951: &devalidate($symb,$stuname,$domain);
3952:
3953: $symb=escape($symb);
3954: if (!$namespace) {
3955: unless ($namespace=$env{'request.course.id'}) {
3956: return '';
3957: }
3958: }
3959: if (!$home) { $home=$env{'user.home'}; }
3960:
3961: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3962: $$storehash{'host'}=$perlvar{'lonHostID'};
3963:
3964: my $namevalue='';
3965: foreach my $key (keys(%$storehash)) {
3966: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3967: }
3968: $namevalue=~s/\&$//;
3969: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3970: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3971: }
3972:
3973: # -------------------------------------------------------------- Critical Store
3974:
3975: sub cstore {
3976: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3977: my $home='';
3978:
3979: if ($stuname) { $home=&homeserver($stuname,$domain); }
3980:
3981: $symb=&symbclean($symb);
3982: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3983:
3984: if (!$domain) { $domain=$env{'user.domain'}; }
3985: if (!$stuname) { $stuname=$env{'user.name'}; }
3986:
3987: &devalidate($symb,$stuname,$domain);
3988:
3989: $symb=escape($symb);
3990: if (!$namespace) {
3991: unless ($namespace=$env{'request.course.id'}) {
3992: return '';
3993: }
3994: }
3995: if (!$home) { $home=$env{'user.home'}; }
3996:
3997: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3998: $$storehash{'host'}=$perlvar{'lonHostID'};
3999:
4000: my $namevalue='';
4001: foreach my $key (keys(%$storehash)) {
4002: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4003: }
4004: $namevalue=~s/\&$//;
4005: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4006: return critical
4007: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4008: }
4009:
4010: # --------------------------------------------------------------------- Restore
4011:
4012: sub restore {
4013: my ($symb,$namespace,$domain,$stuname) = @_;
4014: my $home='';
4015:
4016: if ($stuname) { $home=&homeserver($stuname,$domain); }
4017:
4018: if (!$symb) {
4019: unless ($symb=escape(&symbread())) { return ''; }
4020: } else {
4021: $symb=&escape(&symbclean($symb));
4022: }
4023: if (!$namespace) {
4024: unless ($namespace=$env{'request.course.id'}) {
4025: return '';
4026: }
4027: }
4028: if (!$domain) { $domain=$env{'user.domain'}; }
4029: if (!$stuname) { $stuname=$env{'user.name'}; }
4030: if (!$home) { $home=$env{'user.home'}; }
4031: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4032:
4033: my %returnhash=();
4034: foreach my $line (split(/\&/,$answer)) {
4035: my ($name,$value)=split(/\=/,$line);
4036: $returnhash{&unescape($name)}=&thaw_unescape($value);
4037: }
4038: my $version;
4039: for ($version=1;$version<=$returnhash{'version'};$version++) {
4040: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4041: $returnhash{$item}=$returnhash{$version.':'.$item};
4042: }
4043: }
4044: return %returnhash;
4045: }
4046:
4047: # ---------------------------------------------------------- Course Description
4048:
4049: sub coursedescription {
4050: my ($courseid,$args)=@_;
4051: $courseid=~s/^\///;
4052: $courseid=~s/\_/\//g;
4053: my ($cdomain,$cnum)=split(/\//,$courseid);
4054: my $chome=&homeserver($cnum,$cdomain);
4055: my $normalid=$cdomain.'_'.$cnum;
4056: # need to always cache even if we get errors otherwise we keep
4057: # trying and trying and trying to get the course description.
4058: my %envhash=();
4059: my %returnhash=();
4060:
4061: my $expiretime=600;
4062: if ($env{'request.course.id'} eq $normalid) {
4063: $expiretime=120;
4064: }
4065:
4066: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4067: if (!$args->{'freshen_cache'}
4068: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4069: foreach my $key (keys(%env)) {
4070: next if ($key !~ /^\Q$prefix\E(.*)/);
4071: my ($setting) = $1;
4072: $returnhash{$setting} = $env{$key};
4073: }
4074: return %returnhash;
4075: }
4076:
4077: # get the data agin
4078: if (!$args->{'one_time'}) {
4079: $envhash{'course.'.$normalid.'.last_cache'}=time;
4080: }
4081:
4082: if ($chome ne 'no_host') {
4083: %returnhash=&dump('environment',$cdomain,$cnum);
4084: if (!exists($returnhash{'con_lost'})) {
4085: $returnhash{'home'}= $chome;
4086: $returnhash{'domain'} = $cdomain;
4087: $returnhash{'num'} = $cnum;
4088: if (!defined($returnhash{'type'})) {
4089: $returnhash{'type'} = 'Course';
4090: }
4091: while (my ($name,$value) = each %returnhash) {
4092: $envhash{'course.'.$normalid.'.'.$name}=$value;
4093: }
4094: $returnhash{'url'}=&clutter($returnhash{'url'});
4095: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
4096: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
4097: $envhash{'course.'.$normalid.'.home'}=$chome;
4098: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4099: $envhash{'course.'.$normalid.'.num'}=$cnum;
4100: }
4101: }
4102: if (!$args->{'one_time'}) {
4103: &appenv(\%envhash);
4104: }
4105: return %returnhash;
4106: }
4107:
4108: sub update_released_required {
4109: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4110: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4111: $cid = $env{'request.course.id'};
4112: $cdom = $env{'course.'.$cid.'.domain'};
4113: $cnum = $env{'course.'.$cid.'.num'};
4114: $chome = $env{'course.'.$cid.'.home'};
4115: }
4116: if ($needsrelease) {
4117: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4118: my $needsupdate;
4119: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4120: $needsupdate = 1;
4121: } else {
4122: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4123: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4124: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4125: $needsupdate = 1;
4126: }
4127: }
4128: if ($needsupdate) {
4129: my %needshash = (
4130: 'internal.releaserequired' => $needsrelease,
4131: );
4132: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4133: if ($putresult eq 'ok') {
4134: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4135: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4136: if (ref($crsinfo{$cid}) eq 'HASH') {
4137: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4138: &courseidput($cdom,\%crsinfo,$chome,'notime');
4139: }
4140: }
4141: }
4142: }
4143: return;
4144: }
4145:
4146: # -------------------------------------------------See if a user is privileged
4147:
4148: sub privileged {
4149: my ($username,$domain)=@_;
4150: my $rolesdump=&reply("dump:$domain:$username:roles",
4151: &homeserver($username,$domain));
4152: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4153: ($rolesdump =~ /^error:/)) {
4154: return 0;
4155: }
4156: my $now=time;
4157: if ($rolesdump ne '') {
4158: foreach my $entry (split(/&/,$rolesdump)) {
4159: if ($entry!~/^rolesdef_/) {
4160: my ($area,$role)=split(/=/,$entry);
4161: $area=~s/\_\w\w$//;
4162: my ($trole,$tend,$tstart)=split(/_/,$role);
4163: if (($trole eq 'dc') || ($trole eq 'su')) {
4164: my $active=1;
4165: if ($tend) {
4166: if ($tend<$now) { $active=0; }
4167: }
4168: if ($tstart) {
4169: if ($tstart>$now) { $active=0; }
4170: }
4171: if ($active) { return 1; }
4172: }
4173: }
4174: }
4175: }
4176: return 0;
4177: }
4178:
4179: # -------------------------------------------------------- Get user privileges
4180:
4181: sub rolesinit {
4182: my ($domain,$username,$authhost)=@_;
4183: my $now=time;
4184: my %userroles = ('user.login.time' => $now);
4185: my $extra = &freeze_escape({'skipcheck' => 1});
4186: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4187: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4188: ($rolesdump =~ /^error:/)) {
4189: return \%userroles;
4190: }
4191: my %allroles=();
4192: my %allgroups=();
4193: my $group_privs;
4194:
4195: if ($rolesdump ne '') {
4196: foreach my $entry (split(/&/,$rolesdump)) {
4197: if ($entry!~/^rolesdef_/) {
4198: my ($area,$role)=split(/=/,$entry);
4199: $area=~s/\_\w\w$//;
4200: my ($trole,$tend,$tstart,$group_privs);
4201: if ($role=~/^cr/) {
4202: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4203: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4204: ($tend,$tstart)=split('_',$trest);
4205: } else {
4206: $trole=$role;
4207: }
4208: } elsif ($role =~ m|^gr/|) {
4209: ($trole,$tend,$tstart) = split(/_/,$role);
4210: ($trole,$group_privs) = split(/\//,$trole);
4211: $group_privs = &unescape($group_privs);
4212: } else {
4213: ($trole,$tend,$tstart)=split(/_/,$role);
4214: }
4215: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4216: $username);
4217: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4218: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4219: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4220: if (($area ne '') && ($trole ne '')) {
4221: my $spec=$trole.'.'.$area;
4222: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4223: if ($trole =~ /^cr\//) {
4224: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4225: } elsif ($trole eq 'gr') {
4226: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4227: } else {
4228: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4229: }
4230: }
4231: }
4232: }
4233: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4234: $userroles{'user.adv'} = $adv;
4235: $userroles{'user.author'} = $author;
4236: $env{'user.adv'}=$adv;
4237: }
4238: return \%userroles;
4239: }
4240:
4241: sub set_arearole {
4242: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4243: # log the associated role with the area
4244: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4245: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4246: }
4247:
4248: sub custom_roleprivs {
4249: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4250: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4251: my $homsvr=homeserver($rauthor,$rdomain);
4252: if (&hostname($homsvr) ne '') {
4253: my ($rdummy,$roledef)=
4254: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4255: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4256: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4257: if (defined($syspriv)) {
4258: if ($trest =~ /^$match_community$/) {
4259: $syspriv =~ s/bre\&S//;
4260: }
4261: $$allroles{'cm./'}.=':'.$syspriv;
4262: $$allroles{$spec.'./'}.=':'.$syspriv;
4263: }
4264: if ($tdomain ne '') {
4265: if (defined($dompriv)) {
4266: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4267: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4268: }
4269: if (($trest ne '') && (defined($coursepriv))) {
4270: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4271: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4272: }
4273: }
4274: }
4275: }
4276: }
4277:
4278: sub group_roleprivs {
4279: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4280: my $access = 1;
4281: my $now = time;
4282: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4283: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4284: if ($access) {
4285: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4286: $$allgroups{$course}{$group} .=':'.$group_privs;
4287: }
4288: }
4289:
4290: sub standard_roleprivs {
4291: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4292: if (defined($pr{$trole.':s'})) {
4293: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4294: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4295: }
4296: if ($tdomain ne '') {
4297: if (defined($pr{$trole.':d'})) {
4298: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4299: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4300: }
4301: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4302: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4303: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4304: }
4305: }
4306: }
4307:
4308: sub set_userprivs {
4309: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4310: my $author=0;
4311: my $adv=0;
4312: my %grouproles = ();
4313: if (keys(%{$allgroups}) > 0) {
4314: my @groupkeys;
4315: foreach my $role (keys(%{$allroles})) {
4316: push(@groupkeys,$role);
4317: }
4318: if (ref($groups_roles) eq 'HASH') {
4319: foreach my $key (keys(%{$groups_roles})) {
4320: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4321: push(@groupkeys,$key);
4322: }
4323: }
4324: }
4325: if (@groupkeys > 0) {
4326: foreach my $role (@groupkeys) {
4327: my ($trole,$area,$sec,$extendedarea);
4328: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4329: $trole = $1;
4330: $area = $2;
4331: $sec = $3;
4332: $extendedarea = $area.$sec;
4333: if (exists($$allgroups{$area})) {
4334: foreach my $group (keys(%{$$allgroups{$area}})) {
4335: my $spec = $trole.'.'.$extendedarea;
4336: $grouproles{$spec.'.'.$area.'/'.$group} =
4337: $$allgroups{$area}{$group};
4338: }
4339: }
4340: }
4341: }
4342: }
4343: }
4344: foreach my $group (keys(%grouproles)) {
4345: $$allroles{$group} = $grouproles{$group};
4346: }
4347: foreach my $role (keys(%{$allroles})) {
4348: my %thesepriv;
4349: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4350: foreach my $item (split(/:/,$$allroles{$role})) {
4351: if ($item ne '') {
4352: my ($privilege,$restrictions)=split(/&/,$item);
4353: if ($restrictions eq '') {
4354: $thesepriv{$privilege}='F';
4355: } elsif ($thesepriv{$privilege} ne 'F') {
4356: $thesepriv{$privilege}.=$restrictions;
4357: }
4358: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4359: }
4360: }
4361: my $thesestr='';
4362: foreach my $priv (keys(%thesepriv)) {
4363: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4364: }
4365: $userroles->{'user.priv.'.$role} = $thesestr;
4366: }
4367: return ($author,$adv);
4368: }
4369:
4370: sub role_status {
4371: my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4372: my @pwhere = ();
4373: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4374: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4375: unless (!defined($$role) || $$role eq '') {
4376: $$where=join('.',@pwhere);
4377: $$trolecode=$$role.'.'.$$where;
4378: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4379: $$tstatus='is';
4380: if ($$tstart && $$tstart>$then) {
4381: $$tstatus='future';
4382: if ($$tstart<$now) {
4383: if ($$tstart && $$tstart>$refresh) {
4384: if (($$where ne '') && ($$role ne '')) {
4385: my (%allroles,%allgroups,$group_privs,
4386: %groups_roles,@rolecodes);
4387: my %userroles = (
4388: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4389: );
4390: @rolecodes = ('cm');
4391: my $spec=$$role.'.'.$$where;
4392: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4393: if ($$role =~ /^cr\//) {
4394: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4395: push(@rolecodes,'cr');
4396: } elsif ($$role eq 'gr') {
4397: push(@rolecodes,$$role);
4398: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4399: $env{'user.name'});
4400: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4401: (undef,my $group_privs) = split(/\//,$trole);
4402: $group_privs = &unescape($group_privs);
4403: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4404: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4405: if (keys(%course_roles) > 0) {
4406: my ($tnum) = ($trest =~ /^($match_courseid)/);
4407: if ($tdomain ne '' && $tnum ne '') {
4408: foreach my $key (keys(%course_roles)) {
4409: if ($key =~ /^\Q$tnum\E:\Q$tdomain\E:([^:]+):?([^:]*)/) {
4410: my $crsrole = $1;
4411: my $crssec = $2;
4412: if ($crsrole =~ /^cr/) {
4413: unless (grep(/^cr$/,@rolecodes)) {
4414: push(@rolecodes,'cr');
4415: }
4416: } else {
4417: unless(grep(/^\Q$crsrole\E$/,@rolecodes)) {
4418: push(@rolecodes,$crsrole);
4419: }
4420: }
4421: my $rolekey = $crsrole.'./'.$tdomain.'/'.$tnum;
4422: if ($crssec ne '') {
4423: $rolekey .= '/'.$crssec;
4424: }
4425: $rolekey .= './';
4426: $groups_roles{$rolekey} = \@rolecodes;
4427: }
4428: }
4429: }
4430: }
4431: } else {
4432: push(@rolecodes,$$role);
4433: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4434: }
4435: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4436: &appenv(\%userroles,\@rolecodes);
4437: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4438: }
4439: }
4440: $$tstatus = 'is';
4441: }
4442: }
4443: if ($$tend) {
4444: if ($$tend<$then) {
4445: $$tstatus='expired';
4446: } elsif ($$tend<$now) {
4447: $$tstatus='will_not';
4448: }
4449: }
4450: }
4451: }
4452: }
4453:
4454: sub check_adhoc_privs {
4455: my ($cdom,$cnum,$then,$refresh,$now,$checkrole,$caller) = @_;
4456: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4457: if ($env{$cckey}) {
4458: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4459: &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4460: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4461: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4462: }
4463: } else {
4464: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4465: }
4466: }
4467:
4468: sub set_adhoc_privileges {
4469: # role can be cc or ca
4470: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4471: my $area = '/'.$dcdom.'/'.$pickedcourse;
4472: my $spec = $role.'.'.$area;
4473: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4474: $env{'user.name'});
4475: my %ccrole = ();
4476: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4477: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4478: &appenv(\%userroles,[$role,'cm']);
4479: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4480: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
4481: &appenv( {'request.role' => $spec,
4482: 'request.role.domain' => $dcdom,
4483: 'request.course.sec' => ''
4484: }
4485: );
4486: my $tadv=0;
4487: if (&allowed('adv') eq 'F') { $tadv=1; }
4488: &appenv({'request.role.adv' => $tadv});
4489: }
4490: }
4491:
4492: # --------------------------------------------------------------- get interface
4493:
4494: sub get {
4495: my ($namespace,$storearr,$udomain,$uname)=@_;
4496: my $items='';
4497: foreach my $item (@$storearr) {
4498: $items.=&escape($item).'&';
4499: }
4500: $items=~s/\&$//;
4501: if (!$udomain) { $udomain=$env{'user.domain'}; }
4502: if (!$uname) { $uname=$env{'user.name'}; }
4503: my $uhome=&homeserver($uname,$udomain);
4504:
4505: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4506: my @pairs=split(/\&/,$rep);
4507: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4508: return @pairs;
4509: }
4510: my %returnhash=();
4511: my $i=0;
4512: foreach my $item (@$storearr) {
4513: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4514: $i++;
4515: }
4516: return %returnhash;
4517: }
4518:
4519: # --------------------------------------------------------------- del interface
4520:
4521: sub del {
4522: my ($namespace,$storearr,$udomain,$uname)=@_;
4523: my $items='';
4524: foreach my $item (@$storearr) {
4525: $items.=&escape($item).'&';
4526: }
4527:
4528: $items=~s/\&$//;
4529: if (!$udomain) { $udomain=$env{'user.domain'}; }
4530: if (!$uname) { $uname=$env{'user.name'}; }
4531: my $uhome=&homeserver($uname,$udomain);
4532: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4533: }
4534:
4535: # -------------------------------------------------------------- dump interface
4536:
4537: sub dump {
4538: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
4539: if (!$udomain) { $udomain=$env{'user.domain'}; }
4540: if (!$uname) { $uname=$env{'user.name'}; }
4541: my $uhome=&homeserver($uname,$udomain);
4542: if ($regexp) {
4543: $regexp=&escape($regexp);
4544: } else {
4545: $regexp='.';
4546: }
4547: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
4548: my @pairs=split(/\&/,$rep);
4549: my %returnhash=();
4550: foreach my $item (@pairs) {
4551: my ($key,$value)=split(/=/,$item,2);
4552: $key = &unescape($key);
4553: next if ($key =~ /^error: 2 /);
4554: $returnhash{$key}=&thaw_unescape($value);
4555: }
4556: return %returnhash;
4557: }
4558:
4559: # --------------------------------------------------------- dumpstore interface
4560:
4561: sub dumpstore {
4562: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4563: if (!$udomain) { $udomain=$env{'user.domain'}; }
4564: if (!$uname) { $uname=$env{'user.name'}; }
4565: my $uhome=&homeserver($uname,$udomain);
4566: if ($regexp) {
4567: $regexp=&escape($regexp);
4568: } else {
4569: $regexp='.';
4570: }
4571: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4572: my @pairs=split(/\&/,$rep);
4573: my %returnhash=();
4574: foreach my $item (@pairs) {
4575: my ($key,$value)=split(/=/,$item,2);
4576: next if ($key =~ /^error: 2 /);
4577: $returnhash{$key}=&thaw_unescape($value);
4578: }
4579: return %returnhash;
4580: }
4581:
4582: # -------------------------------------------------------------- keys interface
4583:
4584: sub getkeys {
4585: my ($namespace,$udomain,$uname)=@_;
4586: if (!$udomain) { $udomain=$env{'user.domain'}; }
4587: if (!$uname) { $uname=$env{'user.name'}; }
4588: my $uhome=&homeserver($uname,$udomain);
4589: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4590: my @keyarray=();
4591: foreach my $key (split(/\&/,$rep)) {
4592: next if ($key =~ /^error: 2 /);
4593: push(@keyarray,&unescape($key));
4594: }
4595: return @keyarray;
4596: }
4597:
4598: # --------------------------------------------------------------- currentdump
4599: sub currentdump {
4600: my ($courseid,$sdom,$sname)=@_;
4601: $courseid = $env{'request.course.id'} if (! defined($courseid));
4602: $sdom = $env{'user.domain'} if (! defined($sdom));
4603: $sname = $env{'user.name'} if (! defined($sname));
4604: my $uhome = &homeserver($sname,$sdom);
4605: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4606: return if ($rep =~ /^(error:|no_such_host)/);
4607: #
4608: my %returnhash=();
4609: #
4610: if ($rep eq "unknown_cmd") {
4611: # an old lond will not know currentdump
4612: # Do a dump and make it look like a currentdump
4613: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4614: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4615: my %hash = @tmp;
4616: @tmp=();
4617: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4618: } else {
4619: my @pairs=split(/\&/,$rep);
4620: foreach my $pair (@pairs) {
4621: my ($key,$value)=split(/=/,$pair,2);
4622: my ($symb,$param) = split(/:/,$key);
4623: $returnhash{&unescape($symb)}->{&unescape($param)} =
4624: &thaw_unescape($value);
4625: }
4626: }
4627: return %returnhash;
4628: }
4629:
4630: sub convert_dump_to_currentdump{
4631: my %hash = %{shift()};
4632: my %returnhash;
4633: # Code ripped from lond, essentially. The only difference
4634: # here is the unescaping done by lonnet::dump(). Conceivably
4635: # we might run in to problems with parameter names =~ /^v\./
4636: while (my ($key,$value) = each(%hash)) {
4637: my ($v,$symb,$param) = split(/:/,$key);
4638: $symb = &unescape($symb);
4639: $param = &unescape($param);
4640: next if ($v eq 'version' || $symb eq 'keys');
4641: next if (exists($returnhash{$symb}) &&
4642: exists($returnhash{$symb}->{$param}) &&
4643: $returnhash{$symb}->{'v.'.$param} > $v);
4644: $returnhash{$symb}->{$param}=$value;
4645: $returnhash{$symb}->{'v.'.$param}=$v;
4646: }
4647: #
4648: # Remove all of the keys in the hashes which keep track of
4649: # the version of the parameter.
4650: while (my ($symb,$param_hash) = each(%returnhash)) {
4651: # use a foreach because we are going to delete from the hash.
4652: foreach my $key (keys(%$param_hash)) {
4653: delete($param_hash->{$key}) if ($key =~ /^v\./);
4654: }
4655: }
4656: return \%returnhash;
4657: }
4658:
4659: # ------------------------------------------------------ critical inc interface
4660:
4661: sub cinc {
4662: return &inc(@_,'critical');
4663: }
4664:
4665: # --------------------------------------------------------------- inc interface
4666:
4667: sub inc {
4668: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4669: if (!$udomain) { $udomain=$env{'user.domain'}; }
4670: if (!$uname) { $uname=$env{'user.name'}; }
4671: my $uhome=&homeserver($uname,$udomain);
4672: my $items='';
4673: if (! ref($store)) {
4674: # got a single value, so use that instead
4675: $items = &escape($store).'=&';
4676: } elsif (ref($store) eq 'SCALAR') {
4677: $items = &escape($$store).'=&';
4678: } elsif (ref($store) eq 'ARRAY') {
4679: $items = join('=&',map {&escape($_);} @{$store});
4680: } elsif (ref($store) eq 'HASH') {
4681: while (my($key,$value) = each(%{$store})) {
4682: $items.= &escape($key).'='.&escape($value).'&';
4683: }
4684: }
4685: $items=~s/\&$//;
4686: if ($critical) {
4687: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4688: } else {
4689: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4690: }
4691: }
4692:
4693: # --------------------------------------------------------------- put interface
4694:
4695: sub put {
4696: my ($namespace,$storehash,$udomain,$uname)=@_;
4697: if (!$udomain) { $udomain=$env{'user.domain'}; }
4698: if (!$uname) { $uname=$env{'user.name'}; }
4699: my $uhome=&homeserver($uname,$udomain);
4700: my $items='';
4701: foreach my $item (keys(%$storehash)) {
4702: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4703: }
4704: $items=~s/\&$//;
4705: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4706: }
4707:
4708: # ------------------------------------------------------------ newput interface
4709:
4710: sub newput {
4711: my ($namespace,$storehash,$udomain,$uname)=@_;
4712: if (!$udomain) { $udomain=$env{'user.domain'}; }
4713: if (!$uname) { $uname=$env{'user.name'}; }
4714: my $uhome=&homeserver($uname,$udomain);
4715: my $items='';
4716: foreach my $key (keys(%$storehash)) {
4717: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4718: }
4719: $items=~s/\&$//;
4720: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4721: }
4722:
4723: # --------------------------------------------------------- putstore interface
4724:
4725: sub putstore {
4726: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4727: if (!$udomain) { $udomain=$env{'user.domain'}; }
4728: if (!$uname) { $uname=$env{'user.name'}; }
4729: my $uhome=&homeserver($uname,$udomain);
4730: my $items='';
4731: foreach my $key (keys(%$storehash)) {
4732: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4733: }
4734: $items=~s/\&$//;
4735: my $esc_symb=&escape($symb);
4736: my $esc_v=&escape($version);
4737: my $reply =
4738: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4739: $uhome);
4740: if ($reply eq 'unknown_cmd') {
4741: # gfall back to way things use to be done
4742: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4743: $uname);
4744: }
4745: return $reply;
4746: }
4747:
4748: sub old_putstore {
4749: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4750: if (!$udomain) { $udomain=$env{'user.domain'}; }
4751: if (!$uname) { $uname=$env{'user.name'}; }
4752: my $uhome=&homeserver($uname,$udomain);
4753: my %newstorehash;
4754: foreach my $item (keys(%$storehash)) {
4755: my $key = $version.':'.&escape($symb).':'.$item;
4756: $newstorehash{$key} = $storehash->{$item};
4757: }
4758: my $items='';
4759: my %allitems = ();
4760: foreach my $item (keys(%newstorehash)) {
4761: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4762: my $key = $1.':keys:'.$2;
4763: $allitems{$key} .= $3.':';
4764: }
4765: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4766: }
4767: foreach my $item (keys(%allitems)) {
4768: $allitems{$item} =~ s/\:$//;
4769: $items.= $item.'='.$allitems{$item}.'&';
4770: }
4771: $items=~s/\&$//;
4772: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4773: }
4774:
4775: # ------------------------------------------------------ critical put interface
4776:
4777: sub cput {
4778: my ($namespace,$storehash,$udomain,$uname)=@_;
4779: if (!$udomain) { $udomain=$env{'user.domain'}; }
4780: if (!$uname) { $uname=$env{'user.name'}; }
4781: my $uhome=&homeserver($uname,$udomain);
4782: my $items='';
4783: foreach my $item (keys(%$storehash)) {
4784: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4785: }
4786: $items=~s/\&$//;
4787: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4788: }
4789:
4790: # -------------------------------------------------------------- eget interface
4791:
4792: sub eget {
4793: my ($namespace,$storearr,$udomain,$uname)=@_;
4794: my $items='';
4795: foreach my $item (@$storearr) {
4796: $items.=&escape($item).'&';
4797: }
4798: $items=~s/\&$//;
4799: if (!$udomain) { $udomain=$env{'user.domain'}; }
4800: if (!$uname) { $uname=$env{'user.name'}; }
4801: my $uhome=&homeserver($uname,$udomain);
4802: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4803: my @pairs=split(/\&/,$rep);
4804: my %returnhash=();
4805: my $i=0;
4806: foreach my $item (@$storearr) {
4807: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4808: $i++;
4809: }
4810: return %returnhash;
4811: }
4812:
4813: # ------------------------------------------------------------ tmpput interface
4814: sub tmpput {
4815: my ($storehash,$server,$context)=@_;
4816: my $items='';
4817: foreach my $item (keys(%$storehash)) {
4818: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4819: }
4820: $items=~s/\&$//;
4821: if (defined($context)) {
4822: $items .= ':'.&escape($context);
4823: }
4824: return &reply("tmpput:$items",$server);
4825: }
4826:
4827: # ------------------------------------------------------------ tmpget interface
4828: sub tmpget {
4829: my ($token,$server)=@_;
4830: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4831: my $rep=&reply("tmpget:$token",$server);
4832: my %returnhash;
4833: foreach my $item (split(/\&/,$rep)) {
4834: my ($key,$value)=split(/=/,$item);
4835: next if ($key =~ /^error: 2 /);
4836: $returnhash{&unescape($key)}=&thaw_unescape($value);
4837: }
4838: return %returnhash;
4839: }
4840:
4841: # ------------------------------------------------------------ tmpget interface
4842: sub tmpdel {
4843: my ($token,$server)=@_;
4844: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4845: return &reply("tmpdel:$token",$server);
4846: }
4847:
4848: # -------------------------------------------------- portfolio access checking
4849:
4850: sub portfolio_access {
4851: my ($requrl) = @_;
4852: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4853: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4854: if ($result) {
4855: my %setters;
4856: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4857: my ($startblock,$endblock) =
4858: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4859: if ($startblock && $endblock) {
4860: return 'B';
4861: }
4862: } else {
4863: my ($startblock,$endblock) =
4864: &Apache::loncommon::blockcheck(\%setters,'port');
4865: if ($startblock && $endblock) {
4866: return 'B';
4867: }
4868: }
4869: }
4870: if ($result eq 'ok') {
4871: return 'F';
4872: } elsif ($result =~ /^[^:]+:guest_/) {
4873: return 'A';
4874: }
4875: return '';
4876: }
4877:
4878: sub get_portfolio_access {
4879: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4880:
4881: if (!ref($access_hash)) {
4882: my $current_perms = &get_portfile_permissions($udom,$unum);
4883: my %access_controls = &get_access_controls($current_perms,$group,
4884: $file_name);
4885: $access_hash = $access_controls{$file_name};
4886: }
4887:
4888: my ($public,$guest,@domains,@users,@courses,@groups);
4889: my $now = time;
4890: if (ref($access_hash) eq 'HASH') {
4891: foreach my $key (keys(%{$access_hash})) {
4892: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4893: if ($start > $now) {
4894: next;
4895: }
4896: if ($end && $end<$now) {
4897: next;
4898: }
4899: if ($scope eq 'public') {
4900: $public = $key;
4901: last;
4902: } elsif ($scope eq 'guest') {
4903: $guest = $key;
4904: } elsif ($scope eq 'domains') {
4905: push(@domains,$key);
4906: } elsif ($scope eq 'users') {
4907: push(@users,$key);
4908: } elsif ($scope eq 'course') {
4909: push(@courses,$key);
4910: } elsif ($scope eq 'group') {
4911: push(@groups,$key);
4912: }
4913: }
4914: if ($public) {
4915: return 'ok';
4916: }
4917: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4918: if ($guest) {
4919: return $guest;
4920: }
4921: } else {
4922: if (@domains > 0) {
4923: foreach my $domkey (@domains) {
4924: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4925: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4926: return 'ok';
4927: }
4928: }
4929: }
4930: }
4931: if (@users > 0) {
4932: foreach my $userkey (@users) {
4933: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4934: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4935: if (ref($item) eq 'HASH') {
4936: if (($item->{'uname'} eq $env{'user.name'}) &&
4937: ($item->{'udom'} eq $env{'user.domain'})) {
4938: return 'ok';
4939: }
4940: }
4941: }
4942: }
4943: }
4944: }
4945: my %roleshash;
4946: my @courses_and_groups = @courses;
4947: push(@courses_and_groups,@groups);
4948: if (@courses_and_groups > 0) {
4949: my (%allgroups,%allroles);
4950: my ($start,$end,$role,$sec,$group);
4951: foreach my $envkey (%env) {
4952: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4953: my $cid = $2.'_'.$3;
4954: if ($1 eq 'gr') {
4955: $group = $4;
4956: $allgroups{$cid}{$group} = $env{$envkey};
4957: } else {
4958: if ($4 eq '') {
4959: $sec = 'none';
4960: } else {
4961: $sec = $4;
4962: }
4963: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4964: }
4965: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4966: my $cid = $2.'_'.$3;
4967: if ($4 eq '') {
4968: $sec = 'none';
4969: } else {
4970: $sec = $4;
4971: }
4972: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4973: }
4974: }
4975: if (keys(%allroles) == 0) {
4976: return;
4977: }
4978: foreach my $key (@courses_and_groups) {
4979: my %content = %{$$access_hash{$key}};
4980: my $cnum = $content{'number'};
4981: my $cdom = $content{'domain'};
4982: my $cid = $cdom.'_'.$cnum;
4983: if (!exists($allroles{$cid})) {
4984: next;
4985: }
4986: foreach my $role_id (keys(%{$content{'roles'}})) {
4987: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4988: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4989: my @status = @{$content{'roles'}{$role_id}{'access'}};
4990: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4991: foreach my $role (keys(%{$allroles{$cid}})) {
4992: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4993: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4994: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4995: if (grep/^all$/,@sections) {
4996: return 'ok';
4997: } else {
4998: if (grep/^$sec$/,@sections) {
4999: return 'ok';
5000: }
5001: }
5002: }
5003: }
5004: if (keys(%{$allgroups{$cid}}) == 0) {
5005: if (grep/^none$/,@groups) {
5006: return 'ok';
5007: }
5008: } else {
5009: if (grep/^all$/,@groups) {
5010: return 'ok';
5011: }
5012: foreach my $group (keys(%{$allgroups{$cid}})) {
5013: if (grep/^$group$/,@groups) {
5014: return 'ok';
5015: }
5016: }
5017: }
5018: }
5019: }
5020: }
5021: }
5022: }
5023: if ($guest) {
5024: return $guest;
5025: }
5026: }
5027: }
5028: return;
5029: }
5030:
5031: sub course_group_datechecker {
5032: my ($dates,$now,$status) = @_;
5033: my ($start,$end) = split(/\./,$dates);
5034: if (!$start && !$end) {
5035: return 'ok';
5036: }
5037: if (grep/^active$/,@{$status}) {
5038: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5039: return 'ok';
5040: }
5041: }
5042: if (grep/^previous$/,@{$status}) {
5043: if ($end > $now ) {
5044: return 'ok';
5045: }
5046: }
5047: if (grep/^future$/,@{$status}) {
5048: if ($start > $now) {
5049: return 'ok';
5050: }
5051: }
5052: return;
5053: }
5054:
5055: sub parse_portfolio_url {
5056: my ($url) = @_;
5057:
5058: my ($type,$udom,$unum,$group,$file_name);
5059:
5060: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5061: $type = 1;
5062: $udom = $1;
5063: $unum = $2;
5064: $file_name = $3;
5065: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5066: $type = 2;
5067: $udom = $1;
5068: $unum = $2;
5069: $group = $3;
5070: $file_name = $3.'/'.$4;
5071: }
5072: if (wantarray) {
5073: return ($type,$udom,$unum,$file_name,$group);
5074: }
5075: return $type;
5076: }
5077:
5078: sub is_portfolio_url {
5079: my ($url) = @_;
5080: return scalar(&parse_portfolio_url($url));
5081: }
5082:
5083: sub is_portfolio_file {
5084: my ($file) = @_;
5085: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5086: return 1;
5087: }
5088: return;
5089: }
5090:
5091: sub usertools_access {
5092: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref) = @_;
5093: my ($access,%tools);
5094: if ($context eq '') {
5095: $context = 'tools';
5096: }
5097: if ($context eq 'requestcourses') {
5098: %tools = (
5099: official => 1,
5100: unofficial => 1,
5101: community => 1,
5102: );
5103: } else {
5104: %tools = (
5105: aboutme => 1,
5106: blog => 1,
5107: portfolio => 1,
5108: );
5109: }
5110: return if (!defined($tools{$tool}));
5111:
5112: if ((!defined($udom)) || (!defined($uname))) {
5113: $udom = $env{'user.domain'};
5114: $uname = $env{'user.name'};
5115: }
5116:
5117: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5118: if ($action ne 'reload') {
5119: if ($context eq 'requestcourses') {
5120: return $env{'environment.canrequest.'.$tool};
5121: } else {
5122: return $env{'environment.availabletools.'.$tool};
5123: }
5124: }
5125: }
5126:
5127: my ($toolstatus,$inststatus);
5128:
5129: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5130: ($action ne 'reload')) {
5131: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5132: $inststatus = $env{'environment.inststatus'};
5133: } else {
5134: if (ref($userenvref) eq 'HASH') {
5135: $toolstatus = $userenvref->{$context.'.'.$tool};
5136: $inststatus = $userenvref->{'inststatus'};
5137: } else {
5138: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5139: $toolstatus = $userenv{$context.'.'.$tool};
5140: $inststatus = $userenv{'inststatus'};
5141: }
5142: }
5143:
5144: if ($toolstatus ne '') {
5145: if ($toolstatus) {
5146: $access = 1;
5147: } else {
5148: $access = 0;
5149: }
5150: return $access;
5151: }
5152:
5153: my ($is_adv,%domdef);
5154: if (ref($is_advref) eq 'HASH') {
5155: $is_adv = $is_advref->{'is_adv'};
5156: } else {
5157: $is_adv = &is_advanced_user($udom,$uname);
5158: }
5159: if (ref($domdefref) eq 'HASH') {
5160: %domdef = %{$domdefref};
5161: } else {
5162: %domdef = &get_domain_defaults($udom);
5163: }
5164: if (ref($domdef{$tool}) eq 'HASH') {
5165: if ($is_adv) {
5166: if ($domdef{$tool}{'_LC_adv'} ne '') {
5167: if ($domdef{$tool}{'_LC_adv'}) {
5168: $access = 1;
5169: } else {
5170: $access = 0;
5171: }
5172: return $access;
5173: }
5174: }
5175: if ($inststatus ne '') {
5176: my ($hasaccess,$hasnoaccess);
5177: foreach my $affiliation (split(/:/,$inststatus)) {
5178: if ($domdef{$tool}{$affiliation} ne '') {
5179: if ($domdef{$tool}{$affiliation}) {
5180: $hasaccess = 1;
5181: } else {
5182: $hasnoaccess = 1;
5183: }
5184: }
5185: }
5186: if ($hasaccess || $hasnoaccess) {
5187: if ($hasaccess) {
5188: $access = 1;
5189: } elsif ($hasnoaccess) {
5190: $access = 0;
5191: }
5192: return $access;
5193: }
5194: } else {
5195: if ($domdef{$tool}{'default'} ne '') {
5196: if ($domdef{$tool}{'default'}) {
5197: $access = 1;
5198: } elsif ($domdef{$tool}{'default'} == 0) {
5199: $access = 0;
5200: }
5201: return $access;
5202: }
5203: }
5204: } else {
5205: if ($context eq 'tools') {
5206: $access = 1;
5207: } else {
5208: $access = 0;
5209: }
5210: return $access;
5211: }
5212: }
5213:
5214: sub is_course_owner {
5215: my ($cdom,$cnum,$udom,$uname) = @_;
5216: if (($udom eq '') || ($uname eq '')) {
5217: $udom = $env{'user.domain'};
5218: $uname = $env{'user.name'};
5219: }
5220: unless (($udom eq '') || ($uname eq '')) {
5221: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5222: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5223: return 1;
5224: } else {
5225: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5226: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5227: return 1;
5228: }
5229: }
5230: }
5231: }
5232: return;
5233: }
5234:
5235: sub is_advanced_user {
5236: my ($udom,$uname) = @_;
5237: if ($udom ne '' && $uname ne '') {
5238: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5239: return $env{'user.adv'};
5240: }
5241: }
5242: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5243: my %allroles;
5244: my $is_adv;
5245: foreach my $role (keys(%roleshash)) {
5246: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5247: my $area = '/'.$tdomain.'/'.$trest;
5248: if ($sec ne '') {
5249: $area .= '/'.$sec;
5250: }
5251: if (($area ne '') && ($trole ne '')) {
5252: my $spec=$trole.'.'.$area;
5253: if ($trole =~ /^cr\//) {
5254: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5255: } elsif ($trole ne 'gr') {
5256: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5257: }
5258: }
5259: }
5260: foreach my $role (keys(%allroles)) {
5261: last if ($is_adv);
5262: foreach my $item (split(/:/,$allroles{$role})) {
5263: if ($item ne '') {
5264: my ($privilege,$restrictions)=split(/&/,$item);
5265: if ($privilege eq 'adv') {
5266: $is_adv = 1;
5267: last;
5268: }
5269: }
5270: }
5271: }
5272: return $is_adv;
5273: }
5274:
5275: sub check_can_request {
5276: my ($dom,$can_request,$request_domains) = @_;
5277: my $canreq = 0;
5278: my ($types,$typename) = &Apache::loncommon::course_types();
5279: my @options = ('approval','validate','autolimit');
5280: my $optregex = join('|',@options);
5281: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5282: foreach my $type (@{$types}) {
5283: if (&usertools_access($env{'user.name'},
5284: $env{'user.domain'},
5285: $type,undef,'requestcourses')) {
5286: $canreq ++;
5287: if (ref($request_domains) eq 'HASH') {
5288: push(@{$request_domains->{$type}},$env{'user.domain'});
5289: }
5290: if ($dom eq $env{'user.domain'}) {
5291: $can_request->{$type} = 1;
5292: }
5293: }
5294: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5295: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5296: if (@curr > 0) {
5297: foreach my $item (@curr) {
5298: if (ref($request_domains) eq 'HASH') {
5299: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5300: if ($otherdom ne '') {
5301: if (ref($request_domains->{$type}) eq 'ARRAY') {
5302: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5303: push(@{$request_domains->{$type}},$otherdom);
5304: }
5305: } else {
5306: push(@{$request_domains->{$type}},$otherdom);
5307: }
5308: }
5309: }
5310: }
5311: unless($dom eq $env{'user.domain'}) {
5312: $canreq ++;
5313: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5314: $can_request->{$type} = 1;
5315: }
5316: }
5317: }
5318: }
5319: }
5320: }
5321: return $canreq;
5322: }
5323:
5324: # ---------------------------------------------- Custom access rule evaluation
5325:
5326: sub customaccess {
5327: my ($priv,$uri)=@_;
5328: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5329: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5330: $udom = &LONCAPA::clean_domain($udom);
5331: $ucrs = &LONCAPA::clean_username($ucrs);
5332: my $access=0;
5333: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5334: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5335: if ($type eq 'user') {
5336: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5337: my ($tdom,$tuname)=split(m{/},$scope);
5338: if ($tdom) {
5339: if ($tdom ne $env{'user.domain'}) { next; }
5340: }
5341: if ($tuname) {
5342: if ($tuname ne $env{'user.name'}) { next; }
5343: }
5344: $access=($effect eq 'allow');
5345: last;
5346: }
5347: } else {
5348: if ($role) {
5349: if ($role ne $urole) { next; }
5350: }
5351: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5352: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5353: if ($tdom) {
5354: if ($tdom ne $udom) { next; }
5355: }
5356: if ($tcrs) {
5357: if ($tcrs ne $ucrs) { next; }
5358: }
5359: if ($tsec) {
5360: if ($tsec ne $usec) { next; }
5361: }
5362: $access=($effect eq 'allow');
5363: last;
5364: }
5365: if ($realm eq '' && $role eq '') {
5366: $access=($effect eq 'allow');
5367: }
5368: }
5369: }
5370: return $access;
5371: }
5372:
5373: # ------------------------------------------------- Check for a user privilege
5374:
5375: sub allowed {
5376: my ($priv,$uri,$symb,$role)=@_;
5377: my $ver_orguri=$uri;
5378: $uri=&deversion($uri);
5379: my $orguri=$uri;
5380: $uri=&declutter($uri);
5381:
5382: if ($priv eq 'evb') {
5383: # Evade communication block restrictions for specified role in a course
5384: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5385: return $1;
5386: } else {
5387: return;
5388: }
5389: }
5390:
5391: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5392: # Free bre access to adm and meta resources
5393: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5394: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5395: && ($priv eq 'bre')) {
5396: return 'F';
5397: }
5398:
5399: # Free bre access to user's own portfolio contents
5400: my ($space,$domain,$name,@dir)=split('/',$uri);
5401: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5402: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5403: my %setters;
5404: my ($startblock,$endblock) =
5405: &Apache::loncommon::blockcheck(\%setters,'port');
5406: if ($startblock && $endblock) {
5407: return 'B';
5408: } else {
5409: return 'F';
5410: }
5411: }
5412:
5413: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5414: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5415: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5416: if (exists($env{'request.course.id'})) {
5417: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5418: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5419: if (($domain eq $cdom) && ($name eq $cnum)) {
5420: my $courseprivid=$env{'request.course.id'};
5421: $courseprivid=~s/\_/\//;
5422: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5423: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5424: return $1;
5425: } else {
5426: if ($env{'request.course.sec'}) {
5427: $courseprivid.='/'.$env{'request.course.sec'};
5428: }
5429: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5430: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5431: return $2;
5432: }
5433: }
5434: }
5435: }
5436: }
5437:
5438: # Free bre to public access
5439:
5440: if ($priv eq 'bre') {
5441: my $copyright=&metadata($uri,'copyright');
5442: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5443: return 'F';
5444: }
5445: if ($copyright eq 'priv') {
5446: $uri=~/([^\/]+)\/([^\/]+)\//;
5447: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5448: return '';
5449: }
5450: }
5451: if ($copyright eq 'domain') {
5452: $uri=~/([^\/]+)\/([^\/]+)\//;
5453: unless (($env{'user.domain'} eq $1) ||
5454: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5455: return '';
5456: }
5457: }
5458: if ($env{'request.role'}=~ /li\.\//) {
5459: # Library role, so allow browsing of resources in this domain.
5460: return 'F';
5461: }
5462: if ($copyright eq 'custom') {
5463: unless (&customaccess($priv,$uri)) { return ''; }
5464: }
5465: }
5466: # Domain coordinator is trying to create a course
5467: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5468: # uri is the requested domain in this case.
5469: # comparison to 'request.role.domain' shows if the user has selected
5470: # a role of dc for the domain in question.
5471: return 'F' if ($uri eq $env{'request.role.domain'});
5472: }
5473:
5474: my $thisallowed='';
5475: my $statecond=0;
5476: my $courseprivid='';
5477:
5478: my $ownaccess;
5479: # Community Coordinator or Assistant Co-author browsing resource space.
5480: if (($priv eq 'bro') && ($env{'user.author'})) {
5481: if ($uri eq '') {
5482: $ownaccess = 1;
5483: } else {
5484: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5485: my $udom = $env{'user.domain'};
5486: my $uname = $env{'user.name'};
5487: if ($uri =~ m{^\Q$udom\E/?$}) {
5488: $ownaccess = 1;
5489: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5490: unless ($uri =~ m{\.\./}) {
5491: $ownaccess = 1;
5492: }
5493: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5494: my $now = time;
5495: if ($uri =~ m{^([^/]+)/?$}) {
5496: my $adom = $1;
5497: foreach my $key (keys(%env)) {
5498: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5499: my ($start,$end) = split('.',$env{$key});
5500: if (($now >= $start) && (!$end || $end < $now)) {
5501: $ownaccess = 1;
5502: last;
5503: }
5504: }
5505: }
5506: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5507: my $adom = $1;
5508: my $aname = $2;
5509: foreach my $role ('ca','aa') {
5510: if ($env{"user.role.$role./$adom/$aname"}) {
5511: my ($start,$end) =
5512: split('.',$env{"user.role.$role./$adom/$aname"});
5513: if (($now >= $start) && (!$end || $end < $now)) {
5514: $ownaccess = 1;
5515: last;
5516: }
5517: }
5518: }
5519: }
5520: }
5521: }
5522: }
5523: }
5524:
5525: # Course
5526:
5527: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5528: unless (($priv eq 'bro') && (!$ownaccess)) {
5529: $thisallowed.=$1;
5530: }
5531: }
5532:
5533: # Domain
5534:
5535: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5536: =~/\Q$priv\E\&([^\:]*)/) {
5537: unless (($priv eq 'bro') && (!$ownaccess)) {
5538: $thisallowed.=$1;
5539: }
5540: }
5541:
5542: # Course: uri itself is a course
5543: my $courseuri=$uri;
5544: $courseuri=~s/\_(\d)/\/$1/;
5545: $courseuri=~s/^([^\/])/\/$1/;
5546:
5547: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5548: =~/\Q$priv\E\&([^\:]*)/) {
5549: unless (($priv eq 'bro') && (!$ownaccess)) {
5550: $thisallowed.=$1;
5551: }
5552: }
5553:
5554: # URI is an uploaded document for this course, default permissions don't matter
5555: # not allowing 'edit' access (editupload) to uploaded course docs
5556: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5557: $thisallowed='';
5558: my ($match)=&is_on_map($uri);
5559: if ($match) {
5560: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5561: =~/\Q$priv\E\&([^\:]*)/) {
5562: $thisallowed.=$1;
5563: }
5564: } else {
5565: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5566: if ($refuri) {
5567: if ($refuri =~ m|^/adm/|) {
5568: $thisallowed='F';
5569: } else {
5570: $refuri=&declutter($refuri);
5571: my ($match) = &is_on_map($refuri);
5572: if ($match) {
5573: $thisallowed='F';
5574: }
5575: }
5576: }
5577: }
5578: }
5579:
5580: if ($priv eq 'bre'
5581: && $thisallowed ne 'F'
5582: && $thisallowed ne '2'
5583: && &is_portfolio_url($uri)) {
5584: $thisallowed = &portfolio_access($uri);
5585: }
5586:
5587: # Full access at system, domain or course-wide level? Exit.
5588: if ($thisallowed=~/F/) {
5589: return 'F';
5590: }
5591:
5592: # If this is generating or modifying users, exit with special codes
5593:
5594: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5595: if (($priv eq 'cca') || ($priv eq 'caa')) {
5596: my ($audom,$auname)=split('/',$uri);
5597: # no author name given, so this just checks on the general right to make a co-author in this domain
5598: unless ($auname) { return $thisallowed; }
5599: # an author name is given, so we are about to actually make a co-author for a certain account
5600: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5601: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5602: ($audom ne $env{'request.role.domain'}))) { return ''; }
5603: }
5604: return $thisallowed;
5605: }
5606: #
5607: # Gathered so far: system, domain and course wide privileges
5608: #
5609: # Course: See if uri or referer is an individual resource that is part of
5610: # the course
5611:
5612: if ($env{'request.course.id'}) {
5613:
5614: $courseprivid=$env{'request.course.id'};
5615: if ($env{'request.course.sec'}) {
5616: $courseprivid.='/'.$env{'request.course.sec'};
5617: }
5618: $courseprivid=~s/\_/\//;
5619: my $checkreferer=1;
5620: my ($match,$cond)=&is_on_map($uri);
5621: if ($match) {
5622: $statecond=$cond;
5623: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5624: =~/\Q$priv\E\&([^\:]*)/) {
5625: $thisallowed.=$1;
5626: $checkreferer=0;
5627: }
5628: }
5629:
5630: if ($checkreferer) {
5631: my $refuri=$env{'httpref.'.$orguri};
5632: unless ($refuri) {
5633: foreach my $key (keys(%env)) {
5634: if ($key=~/^httpref\..*\*/) {
5635: my $pattern=$key;
5636: $pattern=~s/^httpref\.\/res\///;
5637: $pattern=~s/\*/\[\^\/\]\+/g;
5638: $pattern=~s/\//\\\//g;
5639: if ($orguri=~/$pattern/) {
5640: $refuri=$env{$key};
5641: }
5642: }
5643: }
5644: }
5645:
5646: if ($refuri) {
5647: $refuri=&declutter($refuri);
5648: my ($match,$cond)=&is_on_map($refuri);
5649: if ($match) {
5650: my $refstatecond=$cond;
5651: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5652: =~/\Q$priv\E\&([^\:]*)/) {
5653: $thisallowed.=$1;
5654: $uri=$refuri;
5655: $statecond=$refstatecond;
5656: }
5657: }
5658: }
5659: }
5660: }
5661:
5662: #
5663: # Gathered now: all privileges that could apply, and condition number
5664: #
5665: #
5666: # Full or no access?
5667: #
5668:
5669: if ($thisallowed=~/F/) {
5670: return 'F';
5671: }
5672:
5673: unless ($thisallowed) {
5674: return '';
5675: }
5676:
5677: # Restrictions exist, deal with them
5678: #
5679: # C:according to course preferences
5680: # R:according to resource settings
5681: # L:unless locked
5682: # X:according to user session state
5683: #
5684:
5685: # Possibly locked functionality, check all courses
5686: # Locks might take effect only after 10 minutes cache expiration for other
5687: # courses, and 2 minutes for current course
5688:
5689: my $envkey;
5690: if ($thisallowed=~/L/) {
5691: foreach $envkey (keys(%env)) {
5692: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5693: my $courseid=$2;
5694: my $roleid=$1.'.'.$2;
5695: $courseid=~s/^\///;
5696: my $expiretime=600;
5697: if ($env{'request.role'} eq $roleid) {
5698: $expiretime=120;
5699: }
5700: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5701: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5702: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5703: &coursedescription($courseid,{'freshen_cache' => 1});
5704: }
5705: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5706: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5707: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5708: &log($env{'user.domain'},$env{'user.name'},
5709: $env{'user.home'},
5710: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5711: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5712: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5713: return '';
5714: }
5715: }
5716: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5717: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5718: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5719: &log($env{'user.domain'},$env{'user.name'},
5720: $env{'user.home'},
5721: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5722: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5723: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5724: return '';
5725: }
5726: }
5727: }
5728: }
5729: }
5730:
5731: #
5732: # Rest of the restrictions depend on selected course
5733: #
5734:
5735: unless ($env{'request.course.id'}) {
5736: if ($thisallowed eq 'A') {
5737: return 'A';
5738: } elsif ($thisallowed eq 'B') {
5739: return 'B';
5740: } else {
5741: return '1';
5742: }
5743: }
5744:
5745: #
5746: # Now user is definitely in a course
5747: #
5748:
5749:
5750: # Course preferences
5751:
5752: if ($thisallowed=~/C/) {
5753: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5754: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5755: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5756: =~/\Q$rolecode\E/) {
5757: if ($priv ne 'pch') {
5758: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5759: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5760: $env{'request.course.id'});
5761: }
5762: return '';
5763: }
5764:
5765: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5766: =~/\Q$unamedom\E/) {
5767: if ($priv ne 'pch') {
5768: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5769: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5770: $env{'request.course.id'});
5771: }
5772: return '';
5773: }
5774: }
5775:
5776: # Resource preferences
5777:
5778: if ($thisallowed=~/R/) {
5779: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5780: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5781: if ($priv ne 'pch') {
5782: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5783: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5784: }
5785: return '';
5786: }
5787: }
5788:
5789: # Restricted by state or randomout?
5790:
5791: if ($thisallowed=~/X/) {
5792: if ($env{'acc.randomout'}) {
5793: if (!$symb) { $symb=&symbread($uri,1); }
5794: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5795: return '';
5796: }
5797: }
5798: if (&condval($statecond)) {
5799: return '2';
5800: } else {
5801: return '';
5802: }
5803: }
5804:
5805: if ($thisallowed eq 'A') {
5806: return 'A';
5807: } elsif ($thisallowed eq 'B') {
5808: return 'B';
5809: }
5810: return 'F';
5811: }
5812:
5813: sub split_uri_for_cond {
5814: my $uri=&deversion(&declutter(shift));
5815: my @uriparts=split(/\//,$uri);
5816: my $filename=pop(@uriparts);
5817: my $pathname=join('/',@uriparts);
5818: return ($pathname,$filename);
5819: }
5820: # --------------------------------------------------- Is a resource on the map?
5821:
5822: sub is_on_map {
5823: my ($pathname,$filename) = &split_uri_for_cond(shift);
5824: #Trying to find the conditional for the file
5825: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5826: /\&\Q$filename\E\:([\d\|]+)\&/);
5827: if ($match) {
5828: return (1,$1);
5829: } else {
5830: return (0,0);
5831: }
5832: }
5833:
5834: # --------------------------------------------------------- Get symb from alias
5835:
5836: sub get_symb_from_alias {
5837: my $symb=shift;
5838: my ($map,$resid,$url)=&decode_symb($symb);
5839: # Already is a symb
5840: if ($url) { return $symb; }
5841: # Must be an alias
5842: my $aliassymb='';
5843: my %bighash;
5844: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5845: &GDBM_READER(),0640)) {
5846: my $rid=$bighash{'mapalias_'.$symb};
5847: if ($rid) {
5848: my ($mapid,$resid)=split(/\./,$rid);
5849: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5850: $resid,$bighash{'src_'.$rid});
5851: }
5852: untie %bighash;
5853: }
5854: return $aliassymb;
5855: }
5856:
5857: # ----------------------------------------------------------------- Define Role
5858:
5859: sub definerole {
5860: if (allowed('mcr','/')) {
5861: my ($rolename,$sysrole,$domrole,$courole)=@_;
5862: foreach my $role (split(':',$sysrole)) {
5863: my ($crole,$cqual)=split(/\&/,$role);
5864: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5865: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5866: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5867: return "refused:s:$crole&$cqual";
5868: }
5869: }
5870: }
5871: foreach my $role (split(':',$domrole)) {
5872: my ($crole,$cqual)=split(/\&/,$role);
5873: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5874: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5875: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5876: return "refused:d:$crole&$cqual";
5877: }
5878: }
5879: }
5880: foreach my $role (split(':',$courole)) {
5881: my ($crole,$cqual)=split(/\&/,$role);
5882: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5883: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5884: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5885: return "refused:c:$crole&$cqual";
5886: }
5887: }
5888: }
5889: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5890: "$env{'user.domain'}:$env{'user.name'}:".
5891: "rolesdef_$rolename=".
5892: escape($sysrole.'_'.$domrole.'_'.$courole);
5893: return reply($command,$env{'user.home'});
5894: } else {
5895: return 'refused';
5896: }
5897: }
5898:
5899: # ---------------- Make a metadata query against the network of library servers
5900:
5901: sub metadata_query {
5902: my ($query,$custom,$customshow,$server_array)=@_;
5903: my %rhash;
5904: my %libserv = &all_library();
5905: my @server_list = (defined($server_array) ? @$server_array
5906: : keys(%libserv) );
5907: for my $server (@server_list) {
5908: unless ($custom or $customshow) {
5909: my $reply=&reply("querysend:".&escape($query),$server);
5910: $rhash{$server}=$reply;
5911: }
5912: else {
5913: my $reply=&reply("querysend:".&escape($query).':'.
5914: &escape($custom).':'.&escape($customshow),
5915: $server);
5916: $rhash{$server}=$reply;
5917: }
5918: }
5919: return \%rhash;
5920: }
5921:
5922: # ----------------------------------------- Send log queries and wait for reply
5923:
5924: sub log_query {
5925: my ($uname,$udom,$query,%filters)=@_;
5926: my $uhome=&homeserver($uname,$udom);
5927: if ($uhome eq 'no_host') { return 'error: no_host'; }
5928: my $uhost=&hostname($uhome);
5929: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5930: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5931: $uhome);
5932: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5933: return get_query_reply($queryid);
5934: }
5935:
5936: # -------------------------- Update MySQL table for portfolio file
5937:
5938: sub update_portfolio_table {
5939: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5940: if ($group ne '') {
5941: $file_name =~s /^\Q$group\E//;
5942: }
5943: my $homeserver = &homeserver($uname,$udom);
5944: my $queryid=
5945: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5946: ':'.&escape($file_name).':'.$action,$homeserver);
5947: my $reply = &get_query_reply($queryid);
5948: return $reply;
5949: }
5950:
5951: # -------------------------- Update MySQL allusers table
5952:
5953: sub update_allusers_table {
5954: my ($uname,$udom,$names) = @_;
5955: my $homeserver = &homeserver($uname,$udom);
5956: my $queryid=
5957: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5958: 'lastname='.&escape($names->{'lastname'}).'%%'.
5959: 'firstname='.&escape($names->{'firstname'}).'%%'.
5960: 'middlename='.&escape($names->{'middlename'}).'%%'.
5961: 'generation='.&escape($names->{'generation'}).'%%'.
5962: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5963: 'id='.&escape($names->{'id'}),$homeserver);
5964: return;
5965: }
5966:
5967: # ------- Request retrieval of institutional classlists for course(s)
5968:
5969: sub fetch_enrollment_query {
5970: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5971: my $homeserver;
5972: my $maxtries = 1;
5973: if ($context eq 'automated') {
5974: $homeserver = $perlvar{'lonHostID'};
5975: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5976: } else {
5977: $homeserver = &homeserver($cnum,$dom);
5978: }
5979: my $host=&hostname($homeserver);
5980: my $cmd = '';
5981: foreach my $affiliate (keys(%{$affiliatesref})) {
5982: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5983: }
5984: $cmd =~ s/%%$//;
5985: $cmd = &escape($cmd);
5986: my $query = 'fetchenrollment';
5987: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5988: unless ($queryid=~/^\Q$host\E\_/) {
5989: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5990: return 'error: '.$queryid;
5991: }
5992: my $reply = &get_query_reply($queryid);
5993: my $tries = 1;
5994: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5995: $reply = &get_query_reply($queryid);
5996: $tries ++;
5997: }
5998: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5999: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6000: } else {
6001: my @responses = split(/:/,$reply);
6002: if ($homeserver eq $perlvar{'lonHostID'}) {
6003: foreach my $line (@responses) {
6004: my ($key,$value) = split(/=/,$line,2);
6005: $$replyref{$key} = $value;
6006: }
6007: } else {
6008: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
6009: foreach my $line (@responses) {
6010: my ($key,$value) = split(/=/,$line);
6011: $$replyref{$key} = $value;
6012: if ($value > 0) {
6013: foreach my $item (@{$$affiliatesref{$key}}) {
6014: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6015: my $destname = $pathname.'/'.$filename;
6016: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6017: if ($xml_classlist =~ /^error/) {
6018: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6019: } else {
6020: if ( open(FILE,">$destname") ) {
6021: print FILE &unescape($xml_classlist);
6022: close(FILE);
6023: } else {
6024: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6025: }
6026: }
6027: }
6028: }
6029: }
6030: }
6031: return 'ok';
6032: }
6033: return 'error';
6034: }
6035:
6036: sub get_query_reply {
6037: my $queryid=shift;
6038: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
6039: my $reply='';
6040: for (1..100) {
6041: sleep 2;
6042: if (-e $replyfile.'.end') {
6043: if (open(my $fh,$replyfile)) {
6044: $reply = join('',<$fh>);
6045: close($fh);
6046: } else { return 'error: reply_file_error'; }
6047: return &unescape($reply);
6048: }
6049: }
6050: return 'timeout:'.$queryid;
6051: }
6052:
6053: sub courselog_query {
6054: #
6055: # possible filters:
6056: # url: url or symb
6057: # username
6058: # domain
6059: # action: view, submit, grade
6060: # start: timestamp
6061: # end: timestamp
6062: #
6063: my (%filters)=@_;
6064: unless ($env{'request.course.id'}) { return 'no_course'; }
6065: if ($filters{'url'}) {
6066: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6067: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6068: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6069: }
6070: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6071: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6072: return &log_query($cname,$cdom,'courselog',%filters);
6073: }
6074:
6075: sub userlog_query {
6076: #
6077: # possible filters:
6078: # action: log check role
6079: # start: timestamp
6080: # end: timestamp
6081: #
6082: my ($uname,$udom,%filters)=@_;
6083: return &log_query($uname,$udom,'userlog',%filters);
6084: }
6085:
6086: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6087:
6088: sub auto_run {
6089: my ($cnum,$cdom) = @_;
6090: my $response = 0;
6091: my $settings;
6092: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6093: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6094: $settings = $domconfig{'autoenroll'};
6095: if ($settings->{'run'} eq '1') {
6096: $response = 1;
6097: }
6098: } else {
6099: my $homeserver;
6100: if (&is_course($cdom,$cnum)) {
6101: $homeserver = &homeserver($cnum,$cdom);
6102: } else {
6103: $homeserver = &domain($cdom,'primary');
6104: }
6105: if ($homeserver ne 'no_host') {
6106: $response = &reply('autorun:'.$cdom,$homeserver);
6107: }
6108: }
6109: return $response;
6110: }
6111:
6112: sub auto_get_sections {
6113: my ($cnum,$cdom,$inst_coursecode) = @_;
6114: my $homeserver;
6115: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6116: $homeserver = &homeserver($cnum,$cdom);
6117: }
6118: if (!defined($homeserver)) {
6119: if ($cdom =~ /^$match_domain$/) {
6120: $homeserver = &domain($cdom,'primary');
6121: }
6122: }
6123: my @secs;
6124: if (defined($homeserver)) {
6125: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6126: unless ($response eq 'refused') {
6127: @secs = split(/:/,$response);
6128: }
6129: }
6130: return @secs;
6131: }
6132:
6133: sub auto_new_course {
6134: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
6135: my $homeserver = &homeserver($cnum,$cdom);
6136: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
6137: return $response;
6138: }
6139:
6140: sub auto_validate_courseID {
6141: my ($cnum,$cdom,$inst_course_id) = @_;
6142: my $homeserver = &homeserver($cnum,$cdom);
6143: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6144: return $response;
6145: }
6146:
6147: sub auto_validate_instcode {
6148: my ($cnum,$cdom,$instcode,$owner) = @_;
6149: my ($homeserver,$response);
6150: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6151: $homeserver = &homeserver($cnum,$cdom);
6152: }
6153: if (!defined($homeserver)) {
6154: if ($cdom =~ /^$match_domain$/) {
6155: $homeserver = &domain($cdom,'primary');
6156: }
6157: }
6158: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6159: &escape($instcode).':'.&escape($owner),$homeserver));
6160: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6161: return ($outcome,$description);
6162: }
6163:
6164: sub auto_create_password {
6165: my ($cnum,$cdom,$authparam,$udom) = @_;
6166: my ($homeserver,$response);
6167: my $create_passwd = 0;
6168: my $authchk = '';
6169: if ($udom =~ /^$match_domain$/) {
6170: $homeserver = &domain($udom,'primary');
6171: }
6172: if ($homeserver eq '') {
6173: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6174: $homeserver = &homeserver($cnum,$cdom);
6175: }
6176: }
6177: if ($homeserver eq '') {
6178: $authchk = 'nodomain';
6179: } else {
6180: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6181: if ($response eq 'refused') {
6182: $authchk = 'refused';
6183: } else {
6184: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6185: }
6186: }
6187: return ($authparam,$create_passwd,$authchk);
6188: }
6189:
6190: sub auto_photo_permission {
6191: my ($cnum,$cdom,$students) = @_;
6192: my $homeserver = &homeserver($cnum,$cdom);
6193: my ($outcome,$perm_reqd,$conditions) =
6194: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6195: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6196: return (undef,undef);
6197: }
6198: return ($outcome,$perm_reqd,$conditions);
6199: }
6200:
6201: sub auto_checkphotos {
6202: my ($uname,$udom,$pid) = @_;
6203: my $homeserver = &homeserver($uname,$udom);
6204: my ($result,$resulttype);
6205: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6206: &escape($uname).':'.&escape($pid),
6207: $homeserver));
6208: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6209: return (undef,undef);
6210: }
6211: if ($outcome) {
6212: ($result,$resulttype) = split(/:/,$outcome);
6213: }
6214: return ($result,$resulttype);
6215: }
6216:
6217: sub auto_photochoice {
6218: my ($cnum,$cdom) = @_;
6219: my $homeserver = &homeserver($cnum,$cdom);
6220: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6221: &escape($cdom),
6222: $homeserver)));
6223: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6224: return (undef,undef);
6225: }
6226: return ($update,$comment);
6227: }
6228:
6229: sub auto_photoupdate {
6230: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6231: my $homeserver = &homeserver($cnum,$dom);
6232: my $host=&hostname($homeserver);
6233: my $cmd = '';
6234: my $maxtries = 1;
6235: foreach my $affiliate (keys(%{$affiliatesref})) {
6236: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6237: }
6238: $cmd =~ s/%%$//;
6239: $cmd = &escape($cmd);
6240: my $query = 'institutionalphotos';
6241: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6242: unless ($queryid=~/^\Q$host\E\_/) {
6243: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6244: return 'error: '.$queryid;
6245: }
6246: my $reply = &get_query_reply($queryid);
6247: my $tries = 1;
6248: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6249: $reply = &get_query_reply($queryid);
6250: $tries ++;
6251: }
6252: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6253: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6254: } else {
6255: my @responses = split(/:/,$reply);
6256: my $outcome = shift(@responses);
6257: foreach my $item (@responses) {
6258: my ($key,$value) = split(/=/,$item);
6259: $$photo{$key} = $value;
6260: }
6261: return $outcome;
6262: }
6263: return 'error';
6264: }
6265:
6266: sub auto_instcode_format {
6267: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6268: $cat_order) = @_;
6269: my $courses = '';
6270: my @homeservers;
6271: if ($caller eq 'global') {
6272: my %servers = &get_servers($codedom,'library');
6273: foreach my $tryserver (keys(%servers)) {
6274: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6275: push(@homeservers,$tryserver);
6276: }
6277: }
6278: } elsif ($caller eq 'requests') {
6279: if ($codedom =~ /^$match_domain$/) {
6280: my $chome = &domain($codedom,'primary');
6281: unless ($chome eq 'no_host') {
6282: push(@homeservers,$chome);
6283: }
6284: }
6285: } else {
6286: push(@homeservers,&homeserver($caller,$codedom));
6287: }
6288: foreach my $code (keys(%{$instcodes})) {
6289: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6290: }
6291: chop($courses);
6292: my $ok_response = 0;
6293: my $response;
6294: while (@homeservers > 0 && $ok_response == 0) {
6295: my $server = shift(@homeservers);
6296: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6297: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6298: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6299: split(/:/,$response);
6300: %{$codes} = (%{$codes},&str2hash($codes_str));
6301: push(@{$codetitles},&str2array($codetitles_str));
6302: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6303: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6304: $ok_response = 1;
6305: }
6306: }
6307: if ($ok_response) {
6308: return 'ok';
6309: } else {
6310: return $response;
6311: }
6312: }
6313:
6314: sub auto_instcode_defaults {
6315: my ($domain,$returnhash,$code_order) = @_;
6316: my @homeservers;
6317:
6318: my %servers = &get_servers($domain,'library');
6319: foreach my $tryserver (keys(%servers)) {
6320: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6321: push(@homeservers,$tryserver);
6322: }
6323: }
6324:
6325: my $response;
6326: foreach my $server (@homeservers) {
6327: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6328: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6329:
6330: foreach my $pair (split(/\&/,$response)) {
6331: my ($name,$value)=split(/\=/,$pair);
6332: if ($name eq 'code_order') {
6333: @{$code_order} = split(/\&/,&unescape($value));
6334: } else {
6335: $returnhash->{&unescape($name)}=&unescape($value);
6336: }
6337: }
6338: return 'ok';
6339: }
6340:
6341: return $response;
6342: }
6343:
6344: sub auto_possible_instcodes {
6345: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6346: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6347: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6348: return;
6349: }
6350: my (@homeservers,$uhome);
6351: if (defined(&domain($domain,'primary'))) {
6352: $uhome=&domain($domain,'primary');
6353: push(@homeservers,&domain($domain,'primary'));
6354: } else {
6355: my %servers = &get_servers($domain,'library');
6356: foreach my $tryserver (keys(%servers)) {
6357: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6358: push(@homeservers,$tryserver);
6359: }
6360: }
6361: }
6362: my $response;
6363: foreach my $server (@homeservers) {
6364: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6365: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6366: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6367: split(':',$response);
6368: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6369: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6370: foreach my $item (split('&',$cat_title)) {
6371: my ($name,$value)=split('=',$item);
6372: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6373: }
6374: foreach my $item (split('&',$cat_order)) {
6375: my ($name,$value)=split('=',$item);
6376: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6377: }
6378: return 'ok';
6379: }
6380: return $response;
6381: }
6382:
6383: sub auto_courserequest_checks {
6384: my ($dom) = @_;
6385: my ($homeserver,%validations);
6386: if ($dom =~ /^$match_domain$/) {
6387: $homeserver = &domain($dom,'primary');
6388: }
6389: unless ($homeserver eq 'no_host') {
6390: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6391: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6392: my @items = split(/&/,$response);
6393: foreach my $item (@items) {
6394: my ($key,$value) = split('=',$item);
6395: $validations{&unescape($key)} = &thaw_unescape($value);
6396: }
6397: }
6398: }
6399: return %validations;
6400: }
6401:
6402: sub auto_courserequest_validation {
6403: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6404: my ($homeserver,$response);
6405: if ($dom =~ /^$match_domain$/) {
6406: $homeserver = &domain($dom,'primary');
6407: }
6408: unless ($homeserver eq 'no_host') {
6409:
6410: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6411: ':'.&escape($crstype).':'.&escape($inststatuslist).
6412: ':'.&escape($instcode).':'.&escape($instseclist),
6413: $homeserver));
6414: }
6415: return $response;
6416: }
6417:
6418: sub auto_validate_class_sec {
6419: my ($cdom,$cnum,$owners,$inst_class) = @_;
6420: my $homeserver = &homeserver($cnum,$cdom);
6421: my $ownerlist;
6422: if (ref($owners) eq 'ARRAY') {
6423: $ownerlist = join(',',@{$owners});
6424: } else {
6425: $ownerlist = $owners;
6426: }
6427: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6428: &escape($ownerlist).':'.$cdom,$homeserver);
6429: return $response;
6430: }
6431:
6432: # ------------------------------------------------------- Course Group routines
6433:
6434: sub get_coursegroups {
6435: my ($cdom,$cnum,$group,$namespace) = @_;
6436: return(&dump($namespace,$cdom,$cnum,$group));
6437: }
6438:
6439: sub modify_coursegroup {
6440: my ($cdom,$cnum,$groupsettings) = @_;
6441: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6442: }
6443:
6444: sub toggle_coursegroup_status {
6445: my ($cdom,$cnum,$group,$action) = @_;
6446: my ($from_namespace,$to_namespace);
6447: if ($action eq 'delete') {
6448: $from_namespace = 'coursegroups';
6449: $to_namespace = 'deleted_groups';
6450: } else {
6451: $from_namespace = 'deleted_groups';
6452: $to_namespace = 'coursegroups';
6453: }
6454: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6455: if (my $tmp = &error(%curr_group)) {
6456: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6457: return ('read error',$tmp);
6458: } else {
6459: my %savedsettings = %curr_group;
6460: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6461: my $deloutcome;
6462: if ($result eq 'ok') {
6463: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6464: } else {
6465: return ('write error',$result);
6466: }
6467: if ($deloutcome eq 'ok') {
6468: return 'ok';
6469: } else {
6470: return ('delete error',$deloutcome);
6471: }
6472: }
6473: }
6474:
6475: sub modify_group_roles {
6476: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6477: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6478: my $role = 'gr/'.&escape($userprivs);
6479: my ($uname,$udom) = split(/:/,$user);
6480: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6481: if ($result eq 'ok') {
6482: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6483: }
6484: return $result;
6485: }
6486:
6487: sub modify_coursegroup_membership {
6488: my ($cdom,$cnum,$membership) = @_;
6489: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6490: return $result;
6491: }
6492:
6493: sub get_active_groups {
6494: my ($udom,$uname,$cdom,$cnum) = @_;
6495: my $now = time;
6496: my %groups = ();
6497: foreach my $key (keys(%env)) {
6498: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6499: my ($start,$end) = split(/\./,$env{$key});
6500: if (($end!=0) && ($end<$now)) { next; }
6501: if (($start!=0) && ($start>$now)) { next; }
6502: if ($1 eq $cdom && $2 eq $cnum) {
6503: $groups{$3} = $env{$key} ;
6504: }
6505: }
6506: }
6507: return %groups;
6508: }
6509:
6510: sub get_group_membership {
6511: my ($cdom,$cnum,$group) = @_;
6512: return(&dump('groupmembership',$cdom,$cnum,$group));
6513: }
6514:
6515: sub get_users_groups {
6516: my ($udom,$uname,$courseid) = @_;
6517: my @usersgroups;
6518: my $cachetime=1800;
6519:
6520: my $hashid="$udom:$uname:$courseid";
6521: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6522: if (defined($cached)) {
6523: @usersgroups = split(/:/,$grouplist);
6524: } else {
6525: $grouplist = '';
6526: my $courseurl = &courseid_to_courseurl($courseid);
6527: my $extra = &freeze_escape({'skipcheck' => 1});
6528: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
6529: my $access_end = $env{'course.'.$courseid.
6530: '.default_enrollment_end_date'};
6531: my $now = time;
6532: foreach my $key (keys(%roleshash)) {
6533: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6534: my $group = $1;
6535: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6536: my $start = $2;
6537: my $end = $1;
6538: if ($start == -1) { next; } # deleted from group
6539: if (($start!=0) && ($start>$now)) { next; }
6540: if (($end!=0) && ($end<$now)) {
6541: if ($access_end && $access_end < $now) {
6542: if ($access_end - $end < 86400) {
6543: push(@usersgroups,$group);
6544: }
6545: }
6546: next;
6547: }
6548: push(@usersgroups,$group);
6549: }
6550: }
6551: }
6552: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6553: $grouplist = join(':',@usersgroups);
6554: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6555: }
6556: return @usersgroups;
6557: }
6558:
6559: sub devalidate_getgroups_cache {
6560: my ($udom,$uname,$cdom,$cnum)=@_;
6561: my $courseid = $cdom.'_'.$cnum;
6562:
6563: my $hashid="$udom:$uname:$courseid";
6564: &devalidate_cache_new('getgroups',$hashid);
6565: }
6566:
6567: # ------------------------------------------------------------------ Plain Text
6568:
6569: sub plaintext {
6570: my ($short,$type,$cid,$forcedefault) = @_;
6571: if ($short =~ m{^cr/}) {
6572: return (split('/',$short))[-1];
6573: }
6574: if (!defined($cid)) {
6575: $cid = $env{'request.course.id'};
6576: }
6577: my %rolenames = (
6578: Course => 'std',
6579: Community => 'alt1',
6580: );
6581: if ($cid ne '') {
6582: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6583: unless ($forcedefault) {
6584: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6585: &Apache::lonlocal::mt_escape(\$roletext);
6586: return &Apache::lonlocal::mt($roletext);
6587: }
6588: }
6589: }
6590: if ((defined($type)) && (defined($rolenames{$type})) &&
6591: (defined($rolenames{$type})) &&
6592: (defined($prp{$short}{$rolenames{$type}}))) {
6593: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6594: } elsif ($cid ne '') {
6595: my $crstype = $env{'course.'.$cid.'.type'};
6596: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6597: (defined($prp{$short}{$rolenames{$crstype}}))) {
6598: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6599: }
6600: }
6601: return &Apache::lonlocal::mt($prp{$short}{'std'});
6602: }
6603:
6604: # ----------------------------------------------------------------- Assign Role
6605:
6606: sub assignrole {
6607: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6608: $context)=@_;
6609: my $mrole;
6610: if ($role =~ /^cr\//) {
6611: my $cwosec=$url;
6612: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6613: unless (&allowed('ccr',$cwosec)) {
6614: my $refused = 1;
6615: if ($context eq 'requestcourses') {
6616: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6617: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6618: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6619: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6620: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6621: if ($crsenv{'internal.courseowner'} eq
6622: $env{'user.name'}.':'.$env{'user.domain'}) {
6623: $refused = '';
6624: }
6625: }
6626: }
6627: }
6628: }
6629: if ($refused) {
6630: &logthis('Refused custom assignrole: '.
6631: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6632: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6633: return 'refused';
6634: }
6635: }
6636: $mrole='cr';
6637: } elsif ($role =~ /^gr\//) {
6638: my $cwogrp=$url;
6639: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6640: unless (&allowed('mdg',$cwogrp)) {
6641: &logthis('Refused group assignrole: '.
6642: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6643: $env{'user.name'}.' at '.$env{'user.domain'});
6644: return 'refused';
6645: }
6646: $mrole='gr';
6647: } else {
6648: my $cwosec=$url;
6649: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6650: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6651: my $refused;
6652: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6653: if (!(&allowed('c'.$role,$url))) {
6654: $refused = 1;
6655: }
6656: } else {
6657: $refused = 1;
6658: }
6659: if ($refused) {
6660: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6661: if (!$selfenroll && $context eq 'course') {
6662: my %crsenv;
6663: if ($role eq 'cc' || $role eq 'co') {
6664: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6665: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6666: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6667: if ($crsenv{'internal.courseowner'} eq
6668: $env{'user.name'}.':'.$env{'user.domain'}) {
6669: $refused = '';
6670: }
6671: }
6672: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6673: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6674: if ($crsenv{'internal.courseowner'} eq
6675: $env{'user.name'}.':'.$env{'user.domain'}) {
6676: $refused = '';
6677: }
6678: }
6679: }
6680: }
6681: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6682: $refused = '';
6683: } elsif ($context eq 'requestcourses') {
6684: my @possroles = ('st','ta','ep','in','cc','co');
6685: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6686: my $wrongcc;
6687: if ($cnum =~ /^$match_community$/) {
6688: $wrongcc = 1 if ($role eq 'cc');
6689: } else {
6690: $wrongcc = 1 if ($role eq 'co');
6691: }
6692: unless ($wrongcc) {
6693: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6694: if ($crsenv{'internal.courseowner'} eq
6695: $env{'user.name'}.':'.$env{'user.domain'}) {
6696: $refused = '';
6697: }
6698: }
6699: }
6700: }
6701: if ($refused) {
6702: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6703: ' '.$role.' '.$end.' '.$start.' by '.
6704: $env{'user.name'}.' at '.$env{'user.domain'});
6705: return 'refused';
6706: }
6707: }
6708: }
6709: $mrole=$role;
6710: }
6711: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6712: "$udom:$uname:$url".'_'."$mrole=$role";
6713: if ($end) { $command.='_'.$end; }
6714: if ($start) {
6715: if ($end) {
6716: $command.='_'.$start;
6717: } else {
6718: $command.='_0_'.$start;
6719: }
6720: }
6721: my $origstart = $start;
6722: my $origend = $end;
6723: my $delflag;
6724: # actually delete
6725: if ($deleteflag) {
6726: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6727: # modify command to delete the role
6728: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6729: "$udom:$uname:$url".'_'."$mrole";
6730: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6731: # set start and finish to negative values for userrolelog
6732: $start=-1;
6733: $end=-1;
6734: $delflag = 1;
6735: }
6736: }
6737: # send command
6738: my $answer=&reply($command,&homeserver($uname,$udom));
6739: # log new user role if status is ok
6740: if ($answer eq 'ok') {
6741: &userrolelog($role,$uname,$udom,$url,$start,$end);
6742: # for course roles, perform group memberships changes triggered by role change.
6743: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6744: unless ($role =~ /^gr/) {
6745: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6746: $origstart,$selfenroll,$context);
6747: }
6748: if ($role eq 'cc') {
6749: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6750: }
6751: }
6752: return $answer;
6753: }
6754:
6755: sub autoupdate_coowners {
6756: my ($url,$end,$start,$uname,$udom) = @_;
6757: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6758: if (($cdom ne '') && ($cnum ne '')) {
6759: my $now = time;
6760: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6761: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6762: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6763: my $instcode = $coursehash{'internal.coursecode'};
6764: if ($instcode ne '') {
6765: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6766: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6767: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6768: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6769: if ($result eq 'valid') {
6770: if ($coursehash{'internal.co-owners'}) {
6771: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6772: push(@newcoowners,$coowner);
6773: }
6774: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6775: push(@newcoowners,$uname.':'.$udom);
6776: }
6777: @newcoowners = sort(@newcoowners);
6778: } else {
6779: push(@newcoowners,$uname.':'.$udom);
6780: }
6781: } else {
6782: if ($coursehash{'internal.co-owners'}) {
6783: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6784: unless ($coowner eq $uname.':'.$udom) {
6785: push(@newcoowners,$coowner);
6786: }
6787: }
6788: unless (@newcoowners > 0) {
6789: $delcoowners = 1;
6790: $coowners = '';
6791: }
6792: }
6793: }
6794: if (@newcoowners || $delcoowners) {
6795: &store_coowners($cdom,$cnum,$coursehash{'home'},
6796: $delcoowners,@newcoowners);
6797: }
6798: }
6799: }
6800: }
6801: }
6802: }
6803: }
6804:
6805: sub store_coowners {
6806: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6807: my $cid = $cdom.'_'.$cnum;
6808: my ($coowners,$delresult,$putresult);
6809: if (@newcoowners) {
6810: $coowners = join(',',@newcoowners);
6811: my %coownershash = (
6812: 'internal.co-owners' => $coowners,
6813: );
6814: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6815: if ($putresult eq 'ok') {
6816: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6817: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6818: }
6819: }
6820: }
6821: if ($delcoowners) {
6822: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6823: if ($delresult eq 'ok') {
6824: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6825: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6826: }
6827: }
6828: }
6829: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6830: my %crsinfo =
6831: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6832: if (ref($crsinfo{$cid}) eq 'HASH') {
6833: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6834: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6835: }
6836: }
6837: }
6838:
6839: # -------------------------------------------------- Modify user authentication
6840: # Overrides without validation
6841:
6842: sub modifyuserauth {
6843: my ($udom,$uname,$umode,$upass)=@_;
6844: my $uhome=&homeserver($uname,$udom);
6845: unless (&allowed('mau',$udom)) { return 'refused'; }
6846: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6847: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6848: ' in domain '.$env{'request.role.domain'});
6849: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6850: &escape($upass),$uhome);
6851: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6852: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6853: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6854: &log($udom,,$uname,$uhome,
6855: 'Authentication changed by '.$env{'user.domain'}.', '.
6856: $env{'user.name'}.', '.$umode.
6857: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6858: unless ($reply eq 'ok') {
6859: &logthis('Authentication mode error: '.$reply);
6860: return 'error: '.$reply;
6861: }
6862: return 'ok';
6863: }
6864:
6865: # --------------------------------------------------------------- Modify a user
6866:
6867: sub modifyuser {
6868: my ($udom, $uname, $uid,
6869: $umode, $upass, $first,
6870: $middle, $last, $gene,
6871: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
6872: $udom= &LONCAPA::clean_domain($udom);
6873: $uname=&LONCAPA::clean_username($uname);
6874: my $showcandelete = 'none';
6875: if (ref($candelete) eq 'ARRAY') {
6876: if (@{$candelete} > 0) {
6877: $showcandelete = join(', ',@{$candelete});
6878: }
6879: }
6880: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6881: $umode.', '.$first.', '.$middle.', '.
6882: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
6883: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6884: ' desiredhome not specified').
6885: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6886: ' in domain '.$env{'request.role.domain'});
6887: my $uhome=&homeserver($uname,$udom,'true');
6888: my $newuser;
6889: if ($uhome eq 'no_host') {
6890: $newuser = 1;
6891: }
6892: # ----------------------------------------------------------------- Create User
6893: if (($uhome eq 'no_host') &&
6894: (($umode && $upass) || ($umode eq 'localauth'))) {
6895: my $unhome='';
6896: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6897: $unhome = $desiredhome;
6898: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6899: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6900: } else { # load balancing routine for determining $unhome
6901: my $loadm=10000000;
6902: my %servers = &get_servers($udom,'library');
6903: foreach my $tryserver (keys(%servers)) {
6904: my $answer=reply('load',$tryserver);
6905: if (($answer=~/\d+/) && ($answer<$loadm)) {
6906: $loadm=$answer;
6907: $unhome=$tryserver;
6908: }
6909: }
6910: }
6911: if (($unhome eq '') || ($unhome eq 'no_host')) {
6912: return 'error: unable to find a home server for '.$uname.
6913: ' in domain '.$udom;
6914: }
6915: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6916: &escape($upass),$unhome);
6917: unless ($reply eq 'ok') {
6918: return 'error: '.$reply;
6919: }
6920: $uhome=&homeserver($uname,$udom,'true');
6921: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6922: return 'error: unable verify users home machine.';
6923: }
6924: } # End of creation of new user
6925: # ---------------------------------------------------------------------- Add ID
6926: if ($uid) {
6927: $uid=~tr/A-Z/a-z/;
6928: my %uidhash=&idrget($udom,$uname);
6929: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6930: && (!$forceid)) {
6931: unless ($uid eq $uidhash{$uname}) {
6932: return 'error: user id "'.$uid.'" does not match '.
6933: 'current user id "'.$uidhash{$uname}.'".';
6934: }
6935: } else {
6936: &idput($udom,($uname => $uid));
6937: }
6938: }
6939: # -------------------------------------------------------------- Add names, etc
6940: my @tmp=&get('environment',
6941: ['firstname','middlename','lastname','generation','id',
6942: 'permanentemail','inststatus'],
6943: $udom,$uname);
6944: my (%names,%oldnames);
6945: if ($tmp[0] =~ m/^error:.*/) {
6946: %names=();
6947: } else {
6948: %names = @tmp;
6949: %oldnames = %names;
6950: }
6951: #
6952: # If name, email and/or uid are blank (e.g., because an uploaded file
6953: # of users did not contain them), do not overwrite existing values
6954: # unless field is in $candelete array ref.
6955: #
6956:
6957: my @fields = ('firstname','middlename','lastname','generation',
6958: 'permanentemail','id');
6959: my %newvalues;
6960: if (ref($candelete) eq 'ARRAY') {
6961: foreach my $field (@fields) {
6962: if (grep(/^\Q$field\E$/,@{$candelete})) {
6963: if ($field eq 'firstname') {
6964: $names{$field} = $first;
6965: } elsif ($field eq 'middlename') {
6966: $names{$field} = $middle;
6967: } elsif ($field eq 'lastname') {
6968: $names{$field} = $last;
6969: } elsif ($field eq 'generation') {
6970: $names{$field} = $gene;
6971: } elsif ($field eq 'permanentemail') {
6972: $names{$field} = $email;
6973: } elsif ($field eq 'id') {
6974: $names{$field} = $uid;
6975: }
6976: }
6977: }
6978: }
6979: if ($first) { $names{'firstname'} = $first; }
6980: if (defined($middle)) { $names{'middlename'} = $middle; }
6981: if ($last) { $names{'lastname'} = $last; }
6982: if (defined($gene)) { $names{'generation'} = $gene; }
6983: if ($email) {
6984: $email=~s/[^\w\@\.\-\,]//gs;
6985: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6986: }
6987: if ($uid) { $names{'id'} = $uid; }
6988: if (defined($inststatus)) {
6989: $names{'inststatus'} = '';
6990: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6991: if (ref($usertypes) eq 'HASH') {
6992: my @okstatuses;
6993: foreach my $item (split(/:/,$inststatus)) {
6994: if (defined($usertypes->{$item})) {
6995: push(@okstatuses,$item);
6996: }
6997: }
6998: if (@okstatuses) {
6999: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7000: }
7001: }
7002: }
7003: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7004: $umode.', '.$first.', '.$middle.', '.
7005: $last.', '.$gene.', '.$email.', '.$inststatus;
7006: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7007: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7008: } else {
7009: $logmsg .= ' during self creation';
7010: }
7011: my $changed;
7012: if ($newuser) {
7013: $changed = 1;
7014: } else {
7015: foreach my $field (@fields) {
7016: if ($names{$field} ne $oldnames{$field}) {
7017: $changed = 1;
7018: last;
7019: }
7020: }
7021: }
7022: unless ($changed) {
7023: $logmsg = 'No changes in user information needed for: '.$logmsg;
7024: &logthis($logmsg);
7025: return 'ok';
7026: }
7027: my $reply = &put('environment', \%names, $udom,$uname);
7028: if ($reply ne 'ok') {
7029: return 'error: '.$reply;
7030: }
7031: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7032: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7033: }
7034: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7035: &devalidate_cache_new('namescache',$uname.':'.$udom);
7036: $logmsg = 'Success modifying user '.$logmsg;
7037: &logthis($logmsg);
7038: return 'ok';
7039: }
7040:
7041: # -------------------------------------------------------------- Modify student
7042:
7043: sub modifystudent {
7044: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7045: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7046: $selfenroll,$context,$inststatus)=@_;
7047: if (!$cid) {
7048: unless ($cid=$env{'request.course.id'}) {
7049: return 'not_in_class';
7050: }
7051: }
7052: # --------------------------------------------------------------- Make the user
7053: my $reply=&modifyuser
7054: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7055: $desiredhome,$email,$inststatus);
7056: unless ($reply eq 'ok') { return $reply; }
7057: # This will cause &modify_student_enrollment to get the uid from the
7058: # students environment
7059: $uid = undef if (!$forceid);
7060: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7061: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7062: return $reply;
7063: }
7064:
7065: sub modify_student_enrollment {
7066: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7067: my ($cdom,$cnum,$chome);
7068: if (!$cid) {
7069: unless ($cid=$env{'request.course.id'}) {
7070: return 'not_in_class';
7071: }
7072: $cdom=$env{'course.'.$cid.'.domain'};
7073: $cnum=$env{'course.'.$cid.'.num'};
7074: } else {
7075: ($cdom,$cnum)=split(/_/,$cid);
7076: }
7077: $chome=$env{'course.'.$cid.'.home'};
7078: if (!$chome) {
7079: $chome=&homeserver($cnum,$cdom);
7080: }
7081: if (!$chome) { return 'unknown_course'; }
7082: # Make sure the user exists
7083: my $uhome=&homeserver($uname,$udom);
7084: if (($uhome eq '') || ($uhome eq 'no_host')) {
7085: return 'error: no such user';
7086: }
7087: # Get student data if we were not given enough information
7088: if (!defined($first) || $first eq '' ||
7089: !defined($last) || $last eq '' ||
7090: !defined($uid) || $uid eq '' ||
7091: !defined($middle) || $middle eq '' ||
7092: !defined($gene) || $gene eq '') {
7093: # They did not supply us with enough data to enroll the student, so
7094: # we need to pick up more information.
7095: my %tmp = &get('environment',
7096: ['firstname','middlename','lastname', 'generation','id']
7097: ,$udom,$uname);
7098:
7099: #foreach my $key (keys(%tmp)) {
7100: # &logthis("key $key = ".$tmp{$key});
7101: #}
7102: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7103: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7104: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7105: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7106: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7107: }
7108: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7109: my $reply=cput('classlist',
7110: {"$uname:$udom" =>
7111: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7112: $cdom,$cnum);
7113: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
7114: return 'error: '.$reply;
7115: } else {
7116: &devalidate_getsection_cache($udom,$uname,$cid);
7117: }
7118: # Add student role to user
7119: my $uurl='/'.$cid;
7120: $uurl=~s/\_/\//g;
7121: if ($usec) {
7122: $uurl.='/'.$usec;
7123: }
7124: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
7125: }
7126:
7127: sub format_name {
7128: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7129: my $name;
7130: if ($first ne 'lastname') {
7131: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7132: } else {
7133: if ($lastname=~/\S/) {
7134: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7135: $name=~s/\s+,/,/;
7136: } else {
7137: $name.= $firstname.' '.$middlename.' '.$generation;
7138: }
7139: }
7140: $name=~s/^\s+//;
7141: $name=~s/\s+$//;
7142: $name=~s/\s+/ /g;
7143: return $name;
7144: }
7145:
7146: # ------------------------------------------------- Write to course preferences
7147:
7148: sub writecoursepref {
7149: my ($courseid,%prefs)=@_;
7150: $courseid=~s/^\///;
7151: $courseid=~s/\_/\//g;
7152: my ($cdomain,$cnum)=split(/\//,$courseid);
7153: my $chome=homeserver($cnum,$cdomain);
7154: if (($chome eq '') || ($chome eq 'no_host')) {
7155: return 'error: no such course';
7156: }
7157: my $cstring='';
7158: foreach my $pref (keys(%prefs)) {
7159: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7160: }
7161: $cstring=~s/\&$//;
7162: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7163: }
7164:
7165: # ---------------------------------------------------------- Make/modify course
7166:
7167: sub createcourse {
7168: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7169: $course_owner,$crstype,$cnum,$context,$category)=@_;
7170: $url=&declutter($url);
7171: my $cid='';
7172: if ($context eq 'requestcourses') {
7173: my $can_create = 0;
7174: my ($ownername,$ownerdom) = split(':',$course_owner);
7175: if ($udom eq $ownerdom) {
7176: if (&usertools_access($ownername,$ownerdom,$category,undef,
7177: $context)) {
7178: $can_create = 1;
7179: }
7180: } else {
7181: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7182: $category);
7183: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7184: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7185: if (@curr > 0) {
7186: my @options = qw(approval validate autolimit);
7187: my $optregex = join('|',@options);
7188: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7189: $can_create = 1;
7190: }
7191: }
7192: }
7193: }
7194: if ($can_create) {
7195: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7196: unless (&allowed('ccc',$udom)) {
7197: return 'refused';
7198: }
7199: }
7200: } else {
7201: return 'refused';
7202: }
7203: } elsif (!&allowed('ccc',$udom)) {
7204: return 'refused';
7205: }
7206: # --------------------------------------------------------------- Get Unique ID
7207: my $uname;
7208: if ($cnum =~ /^$match_courseid$/) {
7209: my $chome=&homeserver($cnum,$udom,'true');
7210: if (($chome eq '') || ($chome eq 'no_host')) {
7211: $uname = $cnum;
7212: } else {
7213: $uname = &generate_coursenum($udom,$crstype);
7214: }
7215: } else {
7216: $uname = &generate_coursenum($udom,$crstype);
7217: }
7218: return $uname if ($uname =~ /^error/);
7219: # -------------------------------------------------- Check supplied server name
7220: if (!defined($course_server)) {
7221: if (defined(&domain($udom,'primary'))) {
7222: $course_server = &domain($udom,'primary');
7223: } else {
7224: $course_server = $env{'user.home'};
7225: }
7226: }
7227: my %host_servers =
7228: &Apache::lonnet::get_servers($udom,'library');
7229: unless ($host_servers{$course_server}) {
7230: return 'error: invalid home server for course: '.$course_server;
7231: }
7232: # ------------------------------------------------------------- Make the course
7233: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7234: $course_server);
7235: unless ($reply eq 'ok') { return 'error: '.$reply; }
7236: my $uhome=&homeserver($uname,$udom,'true');
7237: if (($uhome eq '') || ($uhome eq 'no_host')) {
7238: return 'error: no such course';
7239: }
7240: # ----------------------------------------------------------------- Course made
7241: # log existence
7242: my $now = time;
7243: my $newcourse = {
7244: $udom.'_'.$uname => {
7245: description => $description,
7246: inst_code => $inst_code,
7247: owner => $course_owner,
7248: type => $crstype,
7249: creator => $env{'user.name'}.':'.
7250: $env{'user.domain'},
7251: created => $now,
7252: context => $context,
7253: },
7254: };
7255: &courseidput($udom,$newcourse,$uhome,'notime');
7256: # set toplevel url
7257: my $topurl=$url;
7258: unless ($nonstandard) {
7259: # ------------------------------------------ For standard courses, make top url
7260: my $mapurl=&clutter($url);
7261: if ($mapurl eq '/res/') { $mapurl=''; }
7262: $env{'form.initmap'}=(<<ENDINITMAP);
7263: <map>
7264: <resource id="1" type="start"></resource>
7265: <resource id="2" src="$mapurl"></resource>
7266: <resource id="3" type="finish"></resource>
7267: <link index="1" from="1" to="2"></link>
7268: <link index="2" from="2" to="3"></link>
7269: </map>
7270: ENDINITMAP
7271: $topurl=&declutter(
7272: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7273: );
7274: }
7275: # ----------------------------------------------------------- Write preferences
7276: &writecoursepref($udom.'_'.$uname,
7277: ('description' => $description,
7278: 'url' => $topurl,
7279: 'internal.creator' => $env{'user.name'}.':'.
7280: $env{'user.domain'},
7281: 'internal.created' => $now,
7282: 'internal.creationcontext' => $context)
7283: );
7284: return '/'.$udom.'/'.$uname;
7285: }
7286:
7287: # ------------------------------------------------------------------- Create ID
7288: sub generate_coursenum {
7289: my ($udom,$crstype) = @_;
7290: my $domdesc = &domain($udom);
7291: return 'error: invalid domain' if ($domdesc eq '');
7292: my $first;
7293: if ($crstype eq 'Community') {
7294: $first = '0';
7295: } else {
7296: $first = int(1+rand(9));
7297: }
7298: my $uname=$first.
7299: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7300: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7301: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7302: # ----------------------------------------------- Make sure that does not exist
7303: my $uhome=&homeserver($uname,$udom,'true');
7304: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7305: if ($crstype eq 'Community') {
7306: $first = '0';
7307: } else {
7308: $first = int(1+rand(9));
7309: }
7310: $uname=$first.
7311: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7312: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7313: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7314: $uhome=&homeserver($uname,$udom,'true');
7315: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7316: return 'error: unable to generate unique course-ID';
7317: }
7318: }
7319: return $uname;
7320: }
7321:
7322: sub is_course {
7323: my ($cdom,$cnum) = @_;
7324: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7325: undef,'.');
7326: if (exists($courses{$cdom.'_'.$cnum})) {
7327: return 1;
7328: }
7329: return 0;
7330: }
7331:
7332: sub store_userdata {
7333: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7334: my $result;
7335: if ($datakey ne '') {
7336: if (ref($storehash) eq 'HASH') {
7337: if ($udom eq '' || $uname eq '') {
7338: $udom = $env{'user.domain'};
7339: $uname = $env{'user.name'};
7340: }
7341: my $uhome=&homeserver($uname,$udom);
7342: if (($uhome eq '') || ($uhome eq 'no_host')) {
7343: $result = 'error: no_host';
7344: } else {
7345: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7346: $storehash->{'host'} = $perlvar{'lonHostID'};
7347:
7348: my $namevalue='';
7349: foreach my $key (keys(%{$storehash})) {
7350: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7351: }
7352: $namevalue=~s/\&$//;
7353: $result = &reply("store:$env{'user.domain'}:$env{'user.name'}:".
7354: "$namespace:$datakey:$namevalue",$uhome);
7355: }
7356: } else {
7357: $result = 'error: data to store was not a hash reference';
7358: }
7359: } else {
7360: $result= 'error: invalid requestkey';
7361: }
7362: return $result;
7363: }
7364:
7365: # ---------------------------------------------------------- Assign Custom Role
7366:
7367: sub assigncustomrole {
7368: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7369: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7370: $end,$start,$deleteflag,$selfenroll,$context);
7371: }
7372:
7373: # ----------------------------------------------------------------- Revoke Role
7374:
7375: sub revokerole {
7376: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7377: my $now=time;
7378: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7379: }
7380:
7381: # ---------------------------------------------------------- Revoke Custom Role
7382:
7383: sub revokecustomrole {
7384: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7385: my $now=time;
7386: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7387: $deleteflag,$selfenroll,$context);
7388: }
7389:
7390: # ------------------------------------------------------------ Disk usage
7391: sub diskusage {
7392: my ($udom,$uname,$directorypath,$getpropath)=@_;
7393: $directorypath =~ s/\/$//;
7394: my $listing=&reply('du2:'.&escape($directorypath).':'
7395: .&escape($getpropath).':'.&escape($uname).':'
7396: .&escape($udom),homeserver($uname,$udom));
7397: if ($listing eq 'unknown_cmd') {
7398: if ($getpropath) {
7399: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7400: }
7401: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7402: }
7403: return $listing;
7404: }
7405:
7406: sub is_locked {
7407: my ($file_name, $domain, $user, $which) = @_;
7408: my @check;
7409: my $is_locked;
7410: push(@check,$file_name);
7411: my %locked = &get('file_permissions',\@check,
7412: $env{'user.domain'},$env{'user.name'});
7413: my ($tmp)=keys(%locked);
7414: if ($tmp=~/^error:/) { undef(%locked); }
7415:
7416: if (ref($locked{$file_name}) eq 'ARRAY') {
7417: $is_locked = 'false';
7418: foreach my $entry (@{$locked{$file_name}}) {
7419: if (ref($entry) eq 'ARRAY') {
7420: $is_locked = 'true';
7421: if (ref($which) eq 'ARRAY') {
7422: push(@{$which},$entry);
7423: } else {
7424: last;
7425: }
7426: }
7427: }
7428: } else {
7429: $is_locked = 'false';
7430: }
7431: return $is_locked;
7432: }
7433:
7434: sub declutter_portfile {
7435: my ($file) = @_;
7436: $file =~ s{^(/portfolio/|portfolio/)}{/};
7437: return $file;
7438: }
7439:
7440: # ------------------------------------------------------------- Mark as Read Only
7441:
7442: sub mark_as_readonly {
7443: my ($domain,$user,$files,$what) = @_;
7444: my %current_permissions = &dump('file_permissions',$domain,$user);
7445: my ($tmp)=keys(%current_permissions);
7446: if ($tmp=~/^error:/) { undef(%current_permissions); }
7447: foreach my $file (@{$files}) {
7448: $file = &declutter_portfile($file);
7449: push(@{$current_permissions{$file}},$what);
7450: }
7451: &put('file_permissions',\%current_permissions,$domain,$user);
7452: return;
7453: }
7454:
7455: # ------------------------------------------------------------Save Selected Files
7456:
7457: sub save_selected_files {
7458: my ($user, $path, @files) = @_;
7459: my $filename = $user."savedfiles";
7460: my @other_files = &files_not_in_path($user, $path);
7461: open (OUT, '>'.$tmpdir.$filename);
7462: foreach my $file (@files) {
7463: print (OUT $env{'form.currentpath'}.$file."\n");
7464: }
7465: foreach my $file (@other_files) {
7466: print (OUT $file."\n");
7467: }
7468: close (OUT);
7469: return 'ok';
7470: }
7471:
7472: sub clear_selected_files {
7473: my ($user) = @_;
7474: my $filename = $user."savedfiles";
7475: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7476: print (OUT undef);
7477: close (OUT);
7478: return ("ok");
7479: }
7480:
7481: sub files_in_path {
7482: my ($user, $path) = @_;
7483: my $filename = $user."savedfiles";
7484: my %return_files;
7485: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7486: while (my $line_in = <IN>) {
7487: chomp ($line_in);
7488: my @paths_and_file = split (m!/!, $line_in);
7489: my $file_part = pop (@paths_and_file);
7490: my $path_part = join ('/', @paths_and_file);
7491: $path_part.='/';
7492: my $path_and_file = $path_part.$file_part;
7493: if ($path_part eq $path) {
7494: $return_files{$file_part}= 'selected';
7495: }
7496: }
7497: close (IN);
7498: return (\%return_files);
7499: }
7500:
7501: # called in portfolio select mode, to show files selected NOT in current directory
7502: sub files_not_in_path {
7503: my ($user, $path) = @_;
7504: my $filename = $user."savedfiles";
7505: my @return_files;
7506: my $path_part;
7507: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7508: while (my $line = <IN>) {
7509: #ok, I know it's clunky, but I want it to work
7510: my @paths_and_file = split(m|/|, $line);
7511: my $file_part = pop(@paths_and_file);
7512: chomp($file_part);
7513: my $path_part = join('/', @paths_and_file);
7514: $path_part .= '/';
7515: my $path_and_file = $path_part.$file_part;
7516: if ($path_part ne $path) {
7517: push(@return_files, ($path_and_file));
7518: }
7519: }
7520: close(OUT);
7521: return (@return_files);
7522: }
7523:
7524: #----------------------------------------------Get portfolio file permissions
7525:
7526: sub get_portfile_permissions {
7527: my ($domain,$user) = @_;
7528: my %current_permissions = &dump('file_permissions',$domain,$user);
7529: my ($tmp)=keys(%current_permissions);
7530: if ($tmp=~/^error:/) { undef(%current_permissions); }
7531: return \%current_permissions;
7532: }
7533:
7534: #---------------------------------------------Get portfolio file access controls
7535:
7536: sub get_access_controls {
7537: my ($current_permissions,$group,$file) = @_;
7538: my %access;
7539: my $real_file = $file;
7540: $file =~ s/\.meta$//;
7541: if (defined($file)) {
7542: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7543: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7544: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7545: }
7546: }
7547: } else {
7548: foreach my $key (keys(%{$current_permissions})) {
7549: if ($key =~ /\0accesscontrol$/) {
7550: if (defined($group)) {
7551: if ($key !~ m-^\Q$group\E/-) {
7552: next;
7553: }
7554: }
7555: my ($fullpath) = split(/\0/,$key);
7556: if (ref($$current_permissions{$key}) eq 'HASH') {
7557: foreach my $control (keys(%{$$current_permissions{$key}})) {
7558: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7559: }
7560: }
7561: }
7562: }
7563: }
7564: return %access;
7565: }
7566:
7567: sub modify_access_controls {
7568: my ($file_name,$changes,$domain,$user)=@_;
7569: my ($outcome,$deloutcome);
7570: my %store_permissions;
7571: my %new_values;
7572: my %new_control;
7573: my %translation;
7574: my @deletions = ();
7575: my $now = time;
7576: if (exists($$changes{'activate'})) {
7577: if (ref($$changes{'activate'}) eq 'HASH') {
7578: my @newitems = sort(keys(%{$$changes{'activate'}}));
7579: my $numnew = scalar(@newitems);
7580: for (my $i=0; $i<$numnew; $i++) {
7581: my $newkey = $newitems[$i];
7582: my $newid = &Apache::loncommon::get_cgi_id();
7583: if ($newkey =~ /^\d+:/) {
7584: $newkey =~ s/^(\d+)/$newid/;
7585: $translation{$1} = $newid;
7586: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7587: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7588: $translation{$1} = $newid;
7589: }
7590: $new_values{$file_name."\0".$newkey} =
7591: $$changes{'activate'}{$newitems[$i]};
7592: $new_control{$newkey} = $now;
7593: }
7594: }
7595: }
7596: my %todelete;
7597: my %changed_items;
7598: foreach my $action ('delete','update') {
7599: if (exists($$changes{$action})) {
7600: if (ref($$changes{$action}) eq 'HASH') {
7601: foreach my $key (keys(%{$$changes{$action}})) {
7602: my ($itemnum) = ($key =~ /^([^:]+):/);
7603: if ($action eq 'delete') {
7604: $todelete{$itemnum} = 1;
7605: } else {
7606: $changed_items{$itemnum} = $key;
7607: }
7608: }
7609: }
7610: }
7611: }
7612: # get lock on access controls for file.
7613: my $lockhash = {
7614: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7615: ':'.$env{'user.domain'},
7616: };
7617: my $tries = 0;
7618: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7619:
7620: while (($gotlock ne 'ok') && $tries <3) {
7621: $tries ++;
7622: sleep 1;
7623: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7624: }
7625: if ($gotlock eq 'ok') {
7626: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7627: my ($tmp)=keys(%curr_permissions);
7628: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7629: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7630: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7631: if (ref($curr_controls) eq 'HASH') {
7632: foreach my $control_item (keys(%{$curr_controls})) {
7633: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7634: if (defined($todelete{$itemnum})) {
7635: push(@deletions,$file_name."\0".$control_item);
7636: } else {
7637: if (defined($changed_items{$itemnum})) {
7638: $new_control{$changed_items{$itemnum}} = $now;
7639: push(@deletions,$file_name."\0".$control_item);
7640: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7641: } else {
7642: $new_control{$control_item} = $$curr_controls{$control_item};
7643: }
7644: }
7645: }
7646: }
7647: }
7648: my ($group);
7649: if (&is_course($domain,$user)) {
7650: ($group,my $file) = split(/\//,$file_name,2);
7651: }
7652: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7653: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7654: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7655: # remove lock
7656: my @del_lock = ($file_name."\0".'locked_access_records');
7657: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7658: my $sqlresult =
7659: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7660: $group);
7661: } else {
7662: $outcome = "error: could not obtain lockfile\n";
7663: }
7664: return ($outcome,$deloutcome,\%new_values,\%translation);
7665: }
7666:
7667: sub make_public_indefinitely {
7668: my ($requrl) = @_;
7669: my $now = time;
7670: my $action = 'activate';
7671: my $aclnum = 0;
7672: if (&is_portfolio_url($requrl)) {
7673: my (undef,$udom,$unum,$file_name,$group) =
7674: &parse_portfolio_url($requrl);
7675: my $current_perms = &get_portfile_permissions($udom,$unum);
7676: my %access_controls = &get_access_controls($current_perms,
7677: $group,$file_name);
7678: foreach my $key (keys(%{$access_controls{$file_name}})) {
7679: my ($num,$scope,$end,$start) =
7680: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7681: if ($scope eq 'public') {
7682: if ($start <= $now && $end == 0) {
7683: $action = 'none';
7684: } else {
7685: $action = 'update';
7686: $aclnum = $num;
7687: }
7688: last;
7689: }
7690: }
7691: if ($action eq 'none') {
7692: return 'ok';
7693: } else {
7694: my %changes;
7695: my $newend = 0;
7696: my $newstart = $now;
7697: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7698: $changes{$action}{$newkey} = {
7699: type => 'public',
7700: time => {
7701: start => $newstart,
7702: end => $newend,
7703: },
7704: };
7705: my ($outcome,$deloutcome,$new_values,$translation) =
7706: &modify_access_controls($file_name,\%changes,$udom,$unum);
7707: return $outcome;
7708: }
7709: } else {
7710: return 'invalid';
7711: }
7712: }
7713:
7714: #------------------------------------------------------Get Marked as Read Only
7715:
7716: sub get_marked_as_readonly {
7717: my ($domain,$user,$what,$group) = @_;
7718: my $current_permissions = &get_portfile_permissions($domain,$user);
7719: my @readonly_files;
7720: my $cmp1=$what;
7721: if (ref($what)) { $cmp1=join('',@{$what}) };
7722: while (my ($file_name,$value) = each(%{$current_permissions})) {
7723: if (defined($group)) {
7724: if ($file_name !~ m-^\Q$group\E/-) {
7725: next;
7726: }
7727: }
7728: if (ref($value) eq "ARRAY"){
7729: foreach my $stored_what (@{$value}) {
7730: my $cmp2=$stored_what;
7731: if (ref($stored_what) eq 'ARRAY') {
7732: $cmp2=join('',@{$stored_what});
7733: }
7734: if ($cmp1 eq $cmp2) {
7735: push(@readonly_files, $file_name);
7736: last;
7737: } elsif (!defined($what)) {
7738: push(@readonly_files, $file_name);
7739: last;
7740: }
7741: }
7742: }
7743: }
7744: return @readonly_files;
7745: }
7746: #-----------------------------------------------------------Get Marked as Read Only Hash
7747:
7748: sub get_marked_as_readonly_hash {
7749: my ($current_permissions,$group,$what) = @_;
7750: my %readonly_files;
7751: while (my ($file_name,$value) = each(%{$current_permissions})) {
7752: if (defined($group)) {
7753: if ($file_name !~ m-^\Q$group\E/-) {
7754: next;
7755: }
7756: }
7757: if (ref($value) eq "ARRAY"){
7758: foreach my $stored_what (@{$value}) {
7759: if (ref($stored_what) eq 'ARRAY') {
7760: foreach my $lock_descriptor(@{$stored_what}) {
7761: if ($lock_descriptor eq 'graded') {
7762: $readonly_files{$file_name} = 'graded';
7763: } elsif ($lock_descriptor eq 'handback') {
7764: $readonly_files{$file_name} = 'handback';
7765: } else {
7766: if (!exists($readonly_files{$file_name})) {
7767: $readonly_files{$file_name} = 'locked';
7768: }
7769: }
7770: }
7771: }
7772: }
7773: }
7774: }
7775: return %readonly_files;
7776: }
7777: # ------------------------------------------------------------ Unmark as Read Only
7778:
7779: sub unmark_as_readonly {
7780: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7781: # for portfolio submissions, $what contains [$symb,$crsid]
7782: my ($domain,$user,$what,$file_name,$group) = @_;
7783: $file_name = &declutter_portfile($file_name);
7784: my $symb_crs = $what;
7785: if (ref($what)) { $symb_crs=join('',@$what); }
7786: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7787: my ($tmp)=keys(%current_permissions);
7788: if ($tmp=~/^error:/) { undef(%current_permissions); }
7789: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7790: foreach my $file (@readonly_files) {
7791: my $clean_file = &declutter_portfile($file);
7792: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7793: my $current_locks = $current_permissions{$file};
7794: my @new_locks;
7795: my @del_keys;
7796: if (ref($current_locks) eq "ARRAY"){
7797: foreach my $locker (@{$current_locks}) {
7798: my $compare=$locker;
7799: if (ref($locker) eq 'ARRAY') {
7800: $compare=join('',@{$locker});
7801: if ($compare ne $symb_crs) {
7802: push(@new_locks, $locker);
7803: }
7804: }
7805: }
7806: if (scalar(@new_locks) > 0) {
7807: $current_permissions{$file} = \@new_locks;
7808: } else {
7809: push(@del_keys, $file);
7810: &del('file_permissions',\@del_keys, $domain, $user);
7811: delete($current_permissions{$file});
7812: }
7813: }
7814: }
7815: &put('file_permissions',\%current_permissions,$domain,$user);
7816: return;
7817: }
7818:
7819: # ------------------------------------------------------------ Directory lister
7820:
7821: sub dirlist {
7822: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7823: $uri=~s/^\///;
7824: $uri=~s/\/$//;
7825: my ($udom, $uname);
7826: if ($getuserdir) {
7827: $udom = $userdomain;
7828: $uname = $username;
7829: } else {
7830: (undef,$udom,$uname)=split(/\//,$uri);
7831: if(defined($userdomain)) {
7832: $udom = $userdomain;
7833: }
7834: if(defined($username)) {
7835: $uname = $username;
7836: }
7837: }
7838: my ($dirRoot,$listing,@listing_results);
7839:
7840: $dirRoot = $perlvar{'lonDocRoot'};
7841: if (defined($getpropath)) {
7842: $dirRoot = &propath($udom,$uname);
7843: $dirRoot =~ s/\/$//;
7844: } elsif (defined($getuserdir)) {
7845: my $subdir=$uname.'__';
7846: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7847: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7848: ."/$udom/$subdir/$uname";
7849: } elsif (defined($alternateRoot)) {
7850: $dirRoot = $alternateRoot;
7851: }
7852:
7853: if($udom) {
7854: if($uname) {
7855: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7856: .$getuserdir.':'.&escape($dirRoot)
7857: .':'.&escape($uname).':'.&escape($udom),
7858: &homeserver($uname,$udom));
7859: if ($listing eq 'unknown_cmd') {
7860: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7861: &homeserver($uname,$udom));
7862: } else {
7863: @listing_results = map { &unescape($_); } split(/:/,$listing);
7864: }
7865: if ($listing eq 'unknown_cmd') {
7866: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7867: &homeserver($uname,$udom));
7868: @listing_results = split(/:/,$listing);
7869: } else {
7870: @listing_results = map { &unescape($_); } split(/:/,$listing);
7871: }
7872: return @listing_results;
7873: } elsif(!$alternateRoot) {
7874: my %allusers;
7875: my %servers = &get_servers($udom,'library');
7876: foreach my $tryserver (keys(%servers)) {
7877: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7878: &escape($udom),$tryserver);
7879: if ($listing eq 'unknown_cmd') {
7880: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7881: $udom, $tryserver);
7882: } else {
7883: @listing_results = map { &unescape($_); } split(/:/,$listing);
7884: }
7885: if ($listing eq 'unknown_cmd') {
7886: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7887: $udom, $tryserver);
7888: @listing_results = split(/:/,$listing);
7889: } else {
7890: @listing_results =
7891: map { &unescape($_); } split(/:/,$listing);
7892: }
7893: if ($listing_results[0] ne 'no_such_dir' &&
7894: $listing_results[0] ne 'empty' &&
7895: $listing_results[0] ne 'con_lost') {
7896: foreach my $line (@listing_results) {
7897: my ($entry) = split(/&/,$line,2);
7898: $allusers{$entry} = 1;
7899: }
7900: }
7901: }
7902: my $alluserstr='';
7903: foreach my $user (sort(keys(%allusers))) {
7904: $alluserstr.=$user.'&user:';
7905: }
7906: $alluserstr=~s/:$//;
7907: return split(/:/,$alluserstr);
7908: } else {
7909: return ('missing user name');
7910: }
7911: } elsif(!defined($getpropath)) {
7912: my @all_domains = sort(&all_domains());
7913: foreach my $domain (@all_domains) {
7914: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7915: }
7916: return @all_domains;
7917: } else {
7918: return ('missing domain');
7919: }
7920: }
7921:
7922: # --------------------------------------------- GetFileTimestamp
7923: # This function utilizes dirlist and returns the date stamp for
7924: # when it was last modified. It will also return an error of -1
7925: # if an error occurs
7926:
7927: sub GetFileTimestamp {
7928: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7929: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7930: $studentName = &LONCAPA::clean_username($studentName);
7931: my ($fileStat) =
7932: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7933: undef,$getuserdir);
7934: my @stats = split('&', $fileStat);
7935: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7936: # @stats contains first the filename, then the stat output
7937: return $stats[10]; # so this is 10 instead of 9.
7938: } else {
7939: return -1;
7940: }
7941: }
7942:
7943: sub stat_file {
7944: my ($uri) = @_;
7945: $uri = &clutter_with_no_wrapper($uri);
7946:
7947: my ($udom,$uname,$file);
7948: if ($uri =~ m-^/(uploaded|editupload)/-) {
7949: ($udom,$uname,$file) =
7950: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7951: $file = 'userfiles/'.$file;
7952: }
7953: if ($uri =~ m-^/res/-) {
7954: ($udom,$uname) =
7955: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7956: $file = $uri;
7957: }
7958:
7959: if (!$udom || !$uname || !$file) {
7960: # unable to handle the uri
7961: return ();
7962: }
7963: my $getpropath;
7964: if ($file =~ /^userfiles\//) {
7965: $getpropath = 1;
7966: }
7967: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7968: my @stats = split('&', $result);
7969:
7970: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7971: shift(@stats); #filename is first
7972: return @stats;
7973: }
7974: return ();
7975: }
7976:
7977: # -------------------------------------------------------- Value of a Condition
7978:
7979: # gets the value of a specific preevaluated condition
7980: # stored in the string $env{user.state.<cid>}
7981: # or looks up a condition reference in the bighash and if if hasn't
7982: # already been evaluated recurses into docondval to get the value of
7983: # the condition, then memoizing it to
7984: # $env{user.state.<cid>.<condition>}
7985: sub directcondval {
7986: my $number=shift;
7987: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7988: &Apache::lonuserstate::evalstate();
7989: }
7990: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7991: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7992: } elsif ($number =~ /^_/) {
7993: my $sub_condition;
7994: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7995: &GDBM_READER(),0640)) {
7996: $sub_condition=$bighash{'conditions'.$number};
7997: untie(%bighash);
7998: }
7999: my $value = &docondval($sub_condition);
8000: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8001: return $value;
8002: }
8003: if ($env{'user.state.'.$env{'request.course.id'}}) {
8004: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8005: } else {
8006: return 2;
8007: }
8008: }
8009:
8010: # get the collection of conditions for this resource
8011: sub condval {
8012: my $condidx=shift;
8013: my $allpathcond='';
8014: foreach my $cond (split(/\|/,$condidx)) {
8015: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8016: $allpathcond.=
8017: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8018: }
8019: }
8020: $allpathcond=~s/\|$//;
8021: return &docondval($allpathcond);
8022: }
8023:
8024: #evaluates an expression of conditions
8025: sub docondval {
8026: my ($allpathcond) = @_;
8027: my $result=0;
8028: if ($env{'request.course.id'}
8029: && defined($allpathcond)) {
8030: my $operand='|';
8031: my @stack;
8032: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8033: if ($chunk eq '(') {
8034: push @stack,($operand,$result);
8035: } elsif ($chunk eq ')') {
8036: my $before=pop @stack;
8037: if (pop @stack eq '&') {
8038: $result=$result>$before?$before:$result;
8039: } else {
8040: $result=$result>$before?$result:$before;
8041: }
8042: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8043: $operand=$chunk;
8044: } else {
8045: my $new=directcondval($chunk);
8046: if ($operand eq '&') {
8047: $result=$result>$new?$new:$result;
8048: } else {
8049: $result=$result>$new?$result:$new;
8050: }
8051: }
8052: }
8053: }
8054: return $result;
8055: }
8056:
8057: # ---------------------------------------------------- Devalidate courseresdata
8058:
8059: sub devalidatecourseresdata {
8060: my ($coursenum,$coursedomain)=@_;
8061: my $hashid=$coursenum.':'.$coursedomain;
8062: &devalidate_cache_new('courseres',$hashid);
8063: }
8064:
8065:
8066: # --------------------------------------------------- Course Resourcedata Query
8067: #
8068: # Parameters:
8069: # $coursenum - Number of the course.
8070: # $coursedomain - Domain at which the course was created.
8071: # Returns:
8072: # A hash of the course parameters along (I think) with timestamps
8073: # and version info.
8074:
8075: sub get_courseresdata {
8076: my ($coursenum,$coursedomain)=@_;
8077: my $coursehom=&homeserver($coursenum,$coursedomain);
8078: my $hashid=$coursenum.':'.$coursedomain;
8079: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8080: my %dumpreply;
8081: unless (defined($cached)) {
8082: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8083: $result=\%dumpreply;
8084: my ($tmp) = keys(%dumpreply);
8085: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8086: &do_cache_new('courseres',$hashid,$result,600);
8087: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8088: return $tmp;
8089: } elsif ($tmp =~ /^(error)/) {
8090: $result=undef;
8091: &do_cache_new('courseres',$hashid,$result,600);
8092: }
8093: }
8094: return $result;
8095: }
8096:
8097: sub devalidateuserresdata {
8098: my ($uname,$udom)=@_;
8099: my $hashid="$udom:$uname";
8100: &devalidate_cache_new('userres',$hashid);
8101: }
8102:
8103: sub get_userresdata {
8104: my ($uname,$udom)=@_;
8105: #most student don\'t have any data set, check if there is some data
8106: if (&EXT_cache_status($udom,$uname)) { return undef; }
8107:
8108: my $hashid="$udom:$uname";
8109: my ($result,$cached)=&is_cached_new('userres',$hashid);
8110: if (!defined($cached)) {
8111: my %resourcedata=&dump('resourcedata',$udom,$uname);
8112: $result=\%resourcedata;
8113: &do_cache_new('userres',$hashid,$result,600);
8114: }
8115: my ($tmp)=keys(%$result);
8116: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8117: return $result;
8118: }
8119: #error 2 occurs when the .db doesn't exist
8120: if ($tmp!~/error: 2 /) {
8121: &logthis("<font color=\"blue\">WARNING:".
8122: " Trying to get resource data for ".
8123: $uname." at ".$udom.": ".
8124: $tmp."</font>");
8125: } elsif ($tmp=~/error: 2 /) {
8126: #&EXT_cache_set($udom,$uname);
8127: &do_cache_new('userres',$hashid,undef,600);
8128: undef($tmp); # not really an error so don't send it back
8129: }
8130: return $tmp;
8131: }
8132: #----------------------------------------------- resdata - return resource data
8133: # Purpose:
8134: # Return resource data for either users or for a course.
8135: # Parameters:
8136: # $name - Course/user name.
8137: # $domain - Name of the domain the user/course is registered on.
8138: # $type - Type of thing $name is (must be 'course' or 'user'
8139: # @which - Array of names of resources desired.
8140: # Returns:
8141: # The value of the first reasource in @which that is found in the
8142: # resource hash.
8143: # Exceptional Conditions:
8144: # If the $type passed in is not valid (not the string 'course' or
8145: # 'user', an undefined reference is returned.
8146: # If none of the resources are found, an undef is returned
8147: sub resdata {
8148: my ($name,$domain,$type,@which)=@_;
8149: my $result;
8150: if ($type eq 'course') {
8151: $result=&get_courseresdata($name,$domain);
8152: } elsif ($type eq 'user') {
8153: $result=&get_userresdata($name,$domain);
8154: }
8155: if (!ref($result)) { return $result; }
8156: foreach my $item (@which) {
8157: if (defined($result->{$item->[0]})) {
8158: return [$result->{$item->[0]},$item->[1]];
8159: }
8160: }
8161: return undef;
8162: }
8163:
8164: #
8165: # EXT resource caching routines
8166: #
8167:
8168: sub clear_EXT_cache_status {
8169: &delenv('cache.EXT.');
8170: }
8171:
8172: sub EXT_cache_status {
8173: my ($target_domain,$target_user) = @_;
8174: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8175: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8176: # We know already the user has no data
8177: return 1;
8178: } else {
8179: return 0;
8180: }
8181: }
8182:
8183: sub EXT_cache_set {
8184: my ($target_domain,$target_user) = @_;
8185: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8186: #&appenv({$cachename => time});
8187: }
8188:
8189: # --------------------------------------------------------- Value of a Variable
8190: sub EXT {
8191:
8192: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8193: unless ($varname) { return ''; }
8194: #get real user name/domain, courseid and symb
8195: my $courseid;
8196: my $publicuser;
8197: if ($symbparm) {
8198: $symbparm=&get_symb_from_alias($symbparm);
8199: }
8200: if (!($uname && $udom)) {
8201: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8202: if (!$symbparm) { $symbparm=$cursymb; }
8203: } else {
8204: $courseid=$env{'request.course.id'};
8205: }
8206: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8207: my $rest;
8208: if (defined($therest[0])) {
8209: $rest=join('.',@therest);
8210: } else {
8211: $rest='';
8212: }
8213:
8214: my $qualifierrest=$qualifier;
8215: if ($rest) { $qualifierrest.='.'.$rest; }
8216: my $spacequalifierrest=$space;
8217: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8218: if ($realm eq 'user') {
8219: # --------------------------------------------------------------- user.resource
8220: if ($space eq 'resource') {
8221: if ( (defined($Apache::lonhomework::parsing_a_problem)
8222: || defined($Apache::lonhomework::parsing_a_task))
8223: &&
8224: ($symbparm eq &symbread()) ) {
8225: # if we are in the middle of processing the resource the
8226: # get the value we are planning on committing
8227: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8228: return $Apache::lonhomework::results{$qualifierrest};
8229: } else {
8230: return $Apache::lonhomework::history{$qualifierrest};
8231: }
8232: } else {
8233: my %restored;
8234: if ($publicuser || $env{'request.state'} eq 'construct') {
8235: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8236: } else {
8237: %restored=&restore($symbparm,$courseid,$udom,$uname);
8238: }
8239: return $restored{$qualifierrest};
8240: }
8241: # ----------------------------------------------------------------- user.access
8242: } elsif ($space eq 'access') {
8243: # FIXME - not supporting calls for a specific user
8244: return &allowed($qualifier,$rest);
8245: # ------------------------------------------ user.preferences, user.environment
8246: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8247: if (($uname eq $env{'user.name'}) &&
8248: ($udom eq $env{'user.domain'})) {
8249: return $env{join('.',('environment',$qualifierrest))};
8250: } else {
8251: my %returnhash;
8252: if (!$publicuser) {
8253: %returnhash=&userenvironment($udom,$uname,
8254: $qualifierrest);
8255: }
8256: return $returnhash{$qualifierrest};
8257: }
8258: # ----------------------------------------------------------------- user.course
8259: } elsif ($space eq 'course') {
8260: # FIXME - not supporting calls for a specific user
8261: return $env{join('.',('request.course',$qualifier))};
8262: # ------------------------------------------------------------------- user.role
8263: } elsif ($space eq 'role') {
8264: # FIXME - not supporting calls for a specific user
8265: my ($role,$where)=split(/\./,$env{'request.role'});
8266: if ($qualifier eq 'value') {
8267: return $role;
8268: } elsif ($qualifier eq 'extent') {
8269: return $where;
8270: }
8271: # ----------------------------------------------------------------- user.domain
8272: } elsif ($space eq 'domain') {
8273: return $udom;
8274: # ------------------------------------------------------------------- user.name
8275: } elsif ($space eq 'name') {
8276: return $uname;
8277: # ---------------------------------------------------- Any other user namespace
8278: } else {
8279: my %reply;
8280: if (!$publicuser) {
8281: %reply=&get($space,[$qualifierrest],$udom,$uname);
8282: }
8283: return $reply{$qualifierrest};
8284: }
8285: } elsif ($realm eq 'query') {
8286: # ---------------------------------------------- pull stuff out of query string
8287: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8288: [$spacequalifierrest]);
8289: return $env{'form.'.$spacequalifierrest};
8290: } elsif ($realm eq 'request') {
8291: # ------------------------------------------------------------- request.browser
8292: if ($space eq 'browser') {
8293: if ($qualifier eq 'textremote') {
8294: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8295: return 1;
8296: } else {
8297: return 0;
8298: }
8299: } else {
8300: return $env{'browser.'.$qualifier};
8301: }
8302: # ------------------------------------------------------------ request.filename
8303: } else {
8304: return $env{'request.'.$spacequalifierrest};
8305: }
8306: } elsif ($realm eq 'course') {
8307: # ---------------------------------------------------------- course.description
8308: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8309: } elsif ($realm eq 'resource') {
8310:
8311: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8312: if (!$symbparm) { $symbparm=&symbread(); }
8313: }
8314:
8315: if ($space eq 'title') {
8316: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8317: return &gettitle($symbparm);
8318: }
8319:
8320: if ($space eq 'map') {
8321: my ($map) = &decode_symb($symbparm);
8322: return &symbread($map);
8323: }
8324: if ($space eq 'filename') {
8325: if ($symbparm) {
8326: return &clutter((&decode_symb($symbparm))[2]);
8327: }
8328: return &hreflocation('',$env{'request.filename'});
8329: }
8330:
8331: my ($section, $group, @groups);
8332: my ($courselevelm,$courselevel);
8333: if ($symbparm && defined($courseid) &&
8334: $courseid eq $env{'request.course.id'}) {
8335:
8336: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8337:
8338: # ----------------------------------------------------- Cascading lookup scheme
8339: my $symbp=$symbparm;
8340: my $mapp=&deversion((&decode_symb($symbp))[0]);
8341:
8342: my $symbparm=$symbp.'.'.$spacequalifierrest;
8343: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8344:
8345: if (($env{'user.name'} eq $uname) &&
8346: ($env{'user.domain'} eq $udom)) {
8347: $section=$env{'request.course.sec'};
8348: @groups = split(/:/,$env{'request.course.groups'});
8349: @groups=&sort_course_groups($courseid,@groups);
8350: } else {
8351: if (! defined($usection)) {
8352: $section=&getsection($udom,$uname,$courseid);
8353: } else {
8354: $section = $usection;
8355: }
8356: @groups = &get_users_groups($udom,$uname,$courseid);
8357: }
8358:
8359: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8360: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8361: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8362:
8363: $courselevel=$courseid.'.'.$spacequalifierrest;
8364: my $courselevelr=$courseid.'.'.$symbparm;
8365: $courselevelm=$courseid.'.'.$mapparm;
8366:
8367: # ----------------------------------------------------------- first, check user
8368:
8369: my $userreply=&resdata($uname,$udom,'user',
8370: ([$courselevelr,'resource'],
8371: [$courselevelm,'map' ],
8372: [$courselevel, 'course' ]));
8373: if (defined($userreply)) { return &get_reply($userreply); }
8374:
8375: # ------------------------------------------------ second, check some of course
8376: my $coursereply;
8377: if (@groups > 0) {
8378: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8379: $mapparm,$spacequalifierrest);
8380: if (defined($coursereply)) { return &get_reply($coursereply); }
8381: }
8382:
8383: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8384: $env{'course.'.$courseid.'.domain'},
8385: 'course',
8386: ([$seclevelr, 'resource'],
8387: [$seclevelm, 'map' ],
8388: [$seclevel, 'course' ],
8389: [$courselevelr,'resource']));
8390: if (defined($coursereply)) { return &get_reply($coursereply); }
8391:
8392: # ------------------------------------------------------ third, check map parms
8393: my %parmhash=();
8394: my $thisparm='';
8395: if (tie(%parmhash,'GDBM_File',
8396: $env{'request.course.fn'}.'_parms.db',
8397: &GDBM_READER(),0640)) {
8398: $thisparm=$parmhash{$symbparm};
8399: untie(%parmhash);
8400: }
8401: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8402: }
8403: # ------------------------------------------ fourth, look in resource metadata
8404:
8405: $spacequalifierrest=~s/\./\_/;
8406: my $filename;
8407: if (!$symbparm) { $symbparm=&symbread(); }
8408: if ($symbparm) {
8409: $filename=(&decode_symb($symbparm))[2];
8410: } else {
8411: $filename=$env{'request.filename'};
8412: }
8413: my $metadata=&metadata($filename,$spacequalifierrest);
8414: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8415: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8416: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8417:
8418: # ---------------------------------------------- fourth, look in rest of course
8419: if ($symbparm && defined($courseid) &&
8420: $courseid eq $env{'request.course.id'}) {
8421: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8422: $env{'course.'.$courseid.'.domain'},
8423: 'course',
8424: ([$courselevelm,'map' ],
8425: [$courselevel, 'course']));
8426: if (defined($coursereply)) { return &get_reply($coursereply); }
8427: }
8428: # ------------------------------------------------------------------ Cascade up
8429: unless ($space eq '0') {
8430: my @parts=split(/_/,$space);
8431: my $id=pop(@parts);
8432: my $part=join('_',@parts);
8433: if ($part eq '') { $part='0'; }
8434: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8435: $symbparm,$udom,$uname,$section,1);
8436: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8437: }
8438: if ($recurse) { return undef; }
8439: my $pack_def=&packages_tab_default($filename,$varname);
8440: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8441: # ---------------------------------------------------- Any other user namespace
8442: } elsif ($realm eq 'environment') {
8443: # ----------------------------------------------------------------- environment
8444: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8445: return $env{'environment.'.$spacequalifierrest};
8446: } else {
8447: if ($uname eq 'anonymous' && $udom eq '') {
8448: return '';
8449: }
8450: my %returnhash=&userenvironment($udom,$uname,
8451: $spacequalifierrest);
8452: return $returnhash{$spacequalifierrest};
8453: }
8454: } elsif ($realm eq 'system') {
8455: # ----------------------------------------------------------------- system.time
8456: if ($space eq 'time') {
8457: return time;
8458: }
8459: } elsif ($realm eq 'server') {
8460: # ----------------------------------------------------------------- system.time
8461: if ($space eq 'name') {
8462: return $ENV{'SERVER_NAME'};
8463: }
8464: }
8465: return '';
8466: }
8467:
8468: sub get_reply {
8469: my ($reply_value) = @_;
8470: if (ref($reply_value) eq 'ARRAY') {
8471: if (wantarray) {
8472: return @$reply_value;
8473: }
8474: return $reply_value->[0];
8475: } else {
8476: return $reply_value;
8477: }
8478: }
8479:
8480: sub check_group_parms {
8481: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8482: my @groupitems = ();
8483: my $resultitem;
8484: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8485: foreach my $group (@{$groups}) {
8486: foreach my $level (@levels) {
8487: my $item = $courseid.'.['.$group.'].'.$level->[0];
8488: push(@groupitems,[$item,$level->[1]]);
8489: }
8490: }
8491: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8492: $env{'course.'.$courseid.'.domain'},
8493: 'course',@groupitems);
8494: return $coursereply;
8495: }
8496:
8497: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8498: my ($courseid,@groups) = @_;
8499: @groups = sort(@groups);
8500: return @groups;
8501: }
8502:
8503: sub packages_tab_default {
8504: my ($uri,$varname)=@_;
8505: my (undef,$part,$name)=split(/\./,$varname);
8506:
8507: my (@extension,@specifics,$do_default);
8508: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8509: my ($pack_type,$pack_part)=split(/_/,$package,2);
8510: if ($pack_type eq 'default') {
8511: $do_default=1;
8512: } elsif ($pack_type eq 'extension') {
8513: push(@extension,[$package,$pack_type,$pack_part]);
8514: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8515: # only look at packages defaults for packages that this id is
8516: push(@specifics,[$package,$pack_type,$pack_part]);
8517: }
8518: }
8519: # first look for a package that matches the requested part id
8520: foreach my $package (@specifics) {
8521: my (undef,$pack_type,$pack_part)=@{$package};
8522: next if ($pack_part ne $part);
8523: if (defined($packagetab{"$pack_type&$name&default"})) {
8524: return $packagetab{"$pack_type&$name&default"};
8525: }
8526: }
8527: # look for any possible matching non extension_ package
8528: foreach my $package (@specifics) {
8529: my (undef,$pack_type,$pack_part)=@{$package};
8530: if (defined($packagetab{"$pack_type&$name&default"})) {
8531: return $packagetab{"$pack_type&$name&default"};
8532: }
8533: if ($pack_type eq 'part') { $pack_part='0'; }
8534: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8535: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8536: }
8537: }
8538: # look for any posible extension_ match
8539: foreach my $package (@extension) {
8540: my ($package,$pack_type)=@{$package};
8541: if (defined($packagetab{"$pack_type&$name&default"})) {
8542: return $packagetab{"$pack_type&$name&default"};
8543: }
8544: if (defined($packagetab{$package."&$name&default"})) {
8545: return $packagetab{$package."&$name&default"};
8546: }
8547: }
8548: # look for a global default setting
8549: if ($do_default && defined($packagetab{"default&$name&default"})) {
8550: return $packagetab{"default&$name&default"};
8551: }
8552: return undef;
8553: }
8554:
8555: sub add_prefix_and_part {
8556: my ($prefix,$part)=@_;
8557: my $keyroot;
8558: if (defined($prefix) && $prefix !~ /^__/) {
8559: # prefix that has a part already
8560: $keyroot=$prefix;
8561: } elsif (defined($prefix)) {
8562: # prefix that is missing a part
8563: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8564: } else {
8565: # no prefix at all
8566: if (defined($part)) { $keyroot='_'.$part; }
8567: }
8568: return $keyroot;
8569: }
8570:
8571: # ---------------------------------------------------------------- Get metadata
8572:
8573: my %metaentry;
8574: sub metadata {
8575: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8576: $uri=&declutter($uri);
8577: # if it is a non metadata possible uri return quickly
8578: if (($uri eq '') ||
8579: (($uri =~ m|^/*adm/|) &&
8580: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8581: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^\*uploaded\/.+\.sequence$/) ) {
8582: return undef;
8583: }
8584: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8585: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8586: return undef;
8587: }
8588: my $filename=$uri;
8589: $uri=~s/\.meta$//;
8590: #
8591: # Is the metadata already cached?
8592: # Look at timestamp of caching
8593: # Everything is cached by the main uri, libraries are never directly cached
8594: #
8595: if (!defined($liburi)) {
8596: my ($result,$cached)=&is_cached_new('meta',$uri);
8597: if (defined($cached)) { return $result->{':'.$what}; }
8598: }
8599: {
8600: #
8601: # Is this a recursive call for a library?
8602: #
8603: # if (! exists($metacache{$uri})) {
8604: # $metacache{$uri}={};
8605: # }
8606: my $cachetime = 60*60;
8607: if ($liburi) {
8608: $liburi=&declutter($liburi);
8609: $filename=$liburi;
8610: } else {
8611: &devalidate_cache_new('meta',$uri);
8612: undef(%metaentry);
8613: }
8614: my %metathesekeys=();
8615: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8616: my $metastring;
8617: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8618: my $which = &hreflocation('','/'.($liburi || $uri));
8619: $metastring =
8620: &Apache::lonnet::ssi_body($which,
8621: ('grade_target' => 'meta'));
8622: $cachetime = 1; # only want this cached in the child not long term
8623: } elsif ($uri !~ m -^(editupload)/-) {
8624: my $file=&filelocation('',&clutter($filename));
8625: #push(@{$metaentry{$uri.'.file'}},$file);
8626: $metastring=&getfile($file);
8627: }
8628: my $parser=HTML::LCParser->new(\$metastring);
8629: my $token;
8630: undef %metathesekeys;
8631: while ($token=$parser->get_token) {
8632: if ($token->[0] eq 'S') {
8633: if (defined($token->[2]->{'package'})) {
8634: #
8635: # This is a package - get package info
8636: #
8637: my $package=$token->[2]->{'package'};
8638: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8639: if (defined($token->[2]->{'id'})) {
8640: $keyroot.='_'.$token->[2]->{'id'};
8641: }
8642: if ($metaentry{':packages'}) {
8643: $metaentry{':packages'}.=','.$package.$keyroot;
8644: } else {
8645: $metaentry{':packages'}=$package.$keyroot;
8646: }
8647: foreach my $pack_entry (keys(%packagetab)) {
8648: my $part=$keyroot;
8649: $part=~s/^\_//;
8650: if ($pack_entry=~/^\Q$package\E\&/ ||
8651: $pack_entry=~/^\Q$package\E_0\&/) {
8652: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8653: # ignore package.tab specified default values
8654: # here &package_tab_default() will fetch those
8655: if ($subp eq 'default') { next; }
8656: my $value=$packagetab{$pack_entry};
8657: my $unikey;
8658: if ($pack =~ /_0$/) {
8659: $unikey='parameter_0_'.$name;
8660: $part=0;
8661: } else {
8662: $unikey='parameter'.$keyroot.'_'.$name;
8663: }
8664: if ($subp eq 'display') {
8665: $value.=' [Part: '.$part.']';
8666: }
8667: $metaentry{':'.$unikey.'.part'}=$part;
8668: $metathesekeys{$unikey}=1;
8669: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8670: $metaentry{':'.$unikey.'.'.$subp}=$value;
8671: }
8672: if (defined($metaentry{':'.$unikey.'.default'})) {
8673: $metaentry{':'.$unikey}=
8674: $metaentry{':'.$unikey.'.default'};
8675: }
8676: }
8677: }
8678: } else {
8679: #
8680: # This is not a package - some other kind of start tag
8681: #
8682: my $entry=$token->[1];
8683: my $unikey;
8684: if ($entry eq 'import') {
8685: $unikey='';
8686: } else {
8687: $unikey=$entry;
8688: }
8689: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8690:
8691: if (defined($token->[2]->{'id'})) {
8692: $unikey.='_'.$token->[2]->{'id'};
8693: }
8694:
8695: if ($entry eq 'import') {
8696: #
8697: # Importing a library here
8698: #
8699: if ($depthcount<20) {
8700: my $location=$parser->get_text('/import');
8701: my $dir=$filename;
8702: $dir=~s|[^/]*$||;
8703: $location=&filelocation($dir,$location);
8704: my $metadata =
8705: &metadata($uri,'keys', $location,$unikey,
8706: $depthcount+1);
8707: foreach my $meta (split(',',$metadata)) {
8708: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8709: $metathesekeys{$meta}=1;
8710: }
8711: }
8712: } else {
8713: if (defined($token->[2]->{'name'})) {
8714: $unikey.='_'.$token->[2]->{'name'};
8715: }
8716: $metathesekeys{$unikey}=1;
8717: foreach my $param (@{$token->[3]}) {
8718: $metaentry{':'.$unikey.'.'.$param} =
8719: $token->[2]->{$param};
8720: }
8721: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8722: my $default=$metaentry{':'.$unikey.'.default'};
8723: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8724: # only ws inside the tag, and not in default, so use default
8725: # as value
8726: $metaentry{':'.$unikey}=$default;
8727: } elsif ( $internaltext =~ /\S/ ) {
8728: # something interesting inside the tag
8729: $metaentry{':'.$unikey}=$internaltext;
8730: } else {
8731: # no interesting values, don't set a default
8732: }
8733: # end of not-a-package not-a-library import
8734: }
8735: # end of not-a-package start tag
8736: }
8737: # the next is the end of "start tag"
8738: }
8739: }
8740: my ($extension) = ($uri =~ /\.(\w+)$/);
8741: $extension = lc($extension);
8742: if ($extension eq 'htm') { $extension='html'; }
8743:
8744: foreach my $key (keys(%packagetab)) {
8745: #no specific packages #how's our extension
8746: if ($key!~/^extension_\Q$extension\E&/) { next; }
8747: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8748: \%metathesekeys);
8749: }
8750:
8751: if (!exists($metaentry{':packages'})
8752: || $packagetab{"import_defaults&extension_$extension"}) {
8753: foreach my $key (keys(%packagetab)) {
8754: #no specific packages well let's get default then
8755: if ($key!~/^default&/) { next; }
8756: &metadata_create_package_def($uri,$key,'default',
8757: \%metathesekeys);
8758: }
8759: }
8760: # are there custom rights to evaluate
8761: if ($metaentry{':copyright'} eq 'custom') {
8762:
8763: #
8764: # Importing a rights file here
8765: #
8766: unless ($depthcount) {
8767: my $location=$metaentry{':customdistributionfile'};
8768: my $dir=$filename;
8769: $dir=~s|[^/]*$||;
8770: $location=&filelocation($dir,$location);
8771: my $rights_metadata =
8772: &metadata($uri,'keys',$location,'_rights',
8773: $depthcount+1);
8774: foreach my $rights (split(',',$rights_metadata)) {
8775: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8776: $metathesekeys{$rights}=1;
8777: }
8778: }
8779: }
8780: # uniqifiy package listing
8781: my %seen;
8782: my @uniq_packages =
8783: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8784: $metaentry{':packages'} = join(',',@uniq_packages);
8785:
8786: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8787: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8788: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8789: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8790: # this is the end of "was not already recently cached
8791: }
8792: return $metaentry{':'.$what};
8793: }
8794:
8795: sub metadata_create_package_def {
8796: my ($uri,$key,$package,$metathesekeys)=@_;
8797: my ($pack,$name,$subp)=split(/\&/,$key);
8798: if ($subp eq 'default') { next; }
8799:
8800: if (defined($metaentry{':packages'})) {
8801: $metaentry{':packages'}.=','.$package;
8802: } else {
8803: $metaentry{':packages'}=$package;
8804: }
8805: my $value=$packagetab{$key};
8806: my $unikey;
8807: $unikey='parameter_0_'.$name;
8808: $metaentry{':'.$unikey.'.part'}=0;
8809: $$metathesekeys{$unikey}=1;
8810: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8811: $metaentry{':'.$unikey.'.'.$subp}=$value;
8812: }
8813: if (defined($metaentry{':'.$unikey.'.default'})) {
8814: $metaentry{':'.$unikey}=
8815: $metaentry{':'.$unikey.'.default'};
8816: }
8817: }
8818:
8819: sub metadata_generate_part0 {
8820: my ($metadata,$metacache,$uri) = @_;
8821: my %allnames;
8822: foreach my $metakey (keys(%$metadata)) {
8823: if ($metakey=~/^parameter\_(.*)/) {
8824: my $part=$$metacache{':'.$metakey.'.part'};
8825: my $name=$$metacache{':'.$metakey.'.name'};
8826: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8827: $allnames{$name}=$part;
8828: }
8829: }
8830: }
8831: foreach my $name (keys(%allnames)) {
8832: $$metadata{"parameter_0_$name"}=1;
8833: my $key=":parameter_0_$name";
8834: $$metacache{"$key.part"}='0';
8835: $$metacache{"$key.name"}=$name;
8836: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8837: $allnames{$name}.'_'.$name.
8838: '.type'};
8839: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8840: '.display'};
8841: my $expr='[Part: '.$allnames{$name}.']';
8842: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8843: $$metacache{"$key.display"}=$olddis;
8844: }
8845: }
8846:
8847: # ------------------------------------------------------ Devalidate title cache
8848:
8849: sub devalidate_title_cache {
8850: my ($url)=@_;
8851: if (!$env{'request.course.id'}) { return; }
8852: my $symb=&symbread($url);
8853: if (!$symb) { return; }
8854: my $key=$env{'request.course.id'}."\0".$symb;
8855: &devalidate_cache_new('title',$key);
8856: }
8857:
8858: # ------------------------------------------------- Get the title of a course
8859:
8860: sub current_course_title {
8861: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8862: }
8863: # ------------------------------------------------- Get the title of a resource
8864:
8865: sub gettitle {
8866: my $urlsymb=shift;
8867: my $symb=&symbread($urlsymb);
8868: if ($symb) {
8869: my $key=$env{'request.course.id'}."\0".$symb;
8870: my ($result,$cached)=&is_cached_new('title',$key);
8871: if (defined($cached)) {
8872: return $result;
8873: }
8874: my ($map,$resid,$url)=&decode_symb($symb);
8875: my $title='';
8876: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8877: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8878: } else {
8879: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8880: &GDBM_READER(),0640)) {
8881: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8882: $title=$bighash{'title_'.$mapid.'.'.$resid};
8883: untie(%bighash);
8884: }
8885: }
8886: $title=~s/\&colon\;/\:/gs;
8887: if ($title) {
8888: return &do_cache_new('title',$key,$title,600);
8889: }
8890: $urlsymb=$url;
8891: }
8892: my $title=&metadata($urlsymb,'title');
8893: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8894: return $title;
8895: }
8896:
8897: sub get_slot {
8898: my ($which,$cnum,$cdom)=@_;
8899: if (!$cnum || !$cdom) {
8900: (undef,my $courseid)=&whichuser();
8901: $cdom=$env{'course.'.$courseid.'.domain'};
8902: $cnum=$env{'course.'.$courseid.'.num'};
8903: }
8904: my $key=join("\0",'slots',$cdom,$cnum,$which);
8905: my %slotinfo;
8906: if (exists($remembered{$key})) {
8907: $slotinfo{$which} = $remembered{$key};
8908: } else {
8909: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8910: &Apache::lonhomework::showhash(%slotinfo);
8911: my ($tmp)=keys(%slotinfo);
8912: if ($tmp=~/^error:/) { return (); }
8913: $remembered{$key} = $slotinfo{$which};
8914: }
8915: if (ref($slotinfo{$which}) eq 'HASH') {
8916: return %{$slotinfo{$which}};
8917: }
8918: return $slotinfo{$which};
8919: }
8920: # ------------------------------------------------- Update symbolic store links
8921:
8922: sub symblist {
8923: my ($mapname,%newhash)=@_;
8924: $mapname=&deversion(&declutter($mapname));
8925: my %hash;
8926: if (($env{'request.course.fn'}) && (%newhash)) {
8927: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8928: &GDBM_WRCREAT(),0640)) {
8929: foreach my $url (keys(%newhash)) {
8930: next if ($url eq 'last_known'
8931: && $env{'form.no_update_last_known'});
8932: $hash{declutter($url)}=&encode_symb($mapname,
8933: $newhash{$url}->[1],
8934: $newhash{$url}->[0]);
8935: }
8936: if (untie(%hash)) {
8937: return 'ok';
8938: }
8939: }
8940: }
8941: return 'error';
8942: }
8943:
8944: # --------------------------------------------------------------- Verify a symb
8945:
8946: sub symbverify {
8947: my ($symb,$thisurl)=@_;
8948: my $thisfn=$thisurl;
8949: $thisfn=&declutter($thisfn);
8950: # direct jump to resource in page or to a sequence - will construct own symbs
8951: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8952: # check URL part
8953: my ($map,$resid,$url)=&decode_symb($symb);
8954:
8955: unless ($url eq $thisfn) { return 0; }
8956:
8957: $symb=&symbclean($symb);
8958: $thisurl=&deversion($thisurl);
8959: $thisfn=&deversion($thisfn);
8960:
8961: my %bighash;
8962: my $okay=0;
8963:
8964: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8965: &GDBM_READER(),0640)) {
8966: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
8967: $thisurl =~ s/\?.+$//;
8968: }
8969: my $ids=$bighash{'ids_'.&clutter($thisurl)};
8970: unless ($ids) {
8971: $ids=$bighash{'ids_/'.$thisurl};
8972: }
8973: if ($ids) {
8974: # ------------------------------------------------------------------- Has ID(s)
8975: foreach my $id (split(/\,/,$ids)) {
8976: my ($mapid,$resid)=split(/\./,$id);
8977: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
8978: $symb =~ s/\?.+$//;
8979: }
8980: if (
8981: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
8982: eq $symb) {
8983: if (($env{'request.role.adv'}) ||
8984: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
8985: $okay=1;
8986: }
8987: }
8988: }
8989: }
8990: untie(%bighash);
8991: }
8992: return $okay;
8993: }
8994:
8995: # --------------------------------------------------------------- Clean-up symb
8996:
8997: sub symbclean {
8998: my $symb=shift;
8999: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9000: # remove version from map
9001: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9002:
9003: # remove version from URL
9004: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9005:
9006: # remove wrapper
9007:
9008: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9009: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9010: return $symb;
9011: }
9012:
9013: # ---------------------------------------------- Split symb to find map and url
9014:
9015: sub encode_symb {
9016: my ($map,$resid,$url)=@_;
9017: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9018: }
9019:
9020: sub decode_symb {
9021: my $symb=shift;
9022: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9023: my ($map,$resid,$url)=split(/___/,$symb);
9024: return (&fixversion($map),$resid,&fixversion($url));
9025: }
9026:
9027: sub fixversion {
9028: my $fn=shift;
9029: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9030: my %bighash;
9031: my $uri=&clutter($fn);
9032: my $key=$env{'request.course.id'}.'_'.$uri;
9033: # is this cached?
9034: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9035: if (defined($cached)) { return $result; }
9036: # unfortunately not cached, or expired
9037: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9038: &GDBM_READER(),0640)) {
9039: if ($bighash{'version_'.$uri}) {
9040: my $version=$bighash{'version_'.$uri};
9041: unless (($version eq 'mostrecent') ||
9042: ($version==&getversion($uri))) {
9043: $uri=~s/\.(\w+)$/\.$version\.$1/;
9044: }
9045: }
9046: untie %bighash;
9047: }
9048: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9049: }
9050:
9051: sub deversion {
9052: my $url=shift;
9053: $url=~s/\.\d+\.(\w+)$/\.$1/;
9054: return $url;
9055: }
9056:
9057: # ------------------------------------------------------ Return symb list entry
9058:
9059: sub symbread {
9060: my ($thisfn,$donotrecurse)=@_;
9061: my $cache_str='request.symbread.cached.'.$thisfn;
9062: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9063: # no filename provided? try from environment
9064: unless ($thisfn) {
9065: if ($env{'request.symb'}) {
9066: return $env{$cache_str}=&symbclean($env{'request.symb'});
9067: }
9068: $thisfn=$env{'request.filename'};
9069: }
9070: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9071: # is that filename actually a symb? Verify, clean, and return
9072: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9073: if (&symbverify($thisfn,$1)) {
9074: return $env{$cache_str}=&symbclean($thisfn);
9075: }
9076: }
9077: $thisfn=declutter($thisfn);
9078: my %hash;
9079: my %bighash;
9080: my $syval='';
9081: if (($env{'request.course.fn'}) && ($thisfn)) {
9082: my $targetfn = $thisfn;
9083: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9084: $targetfn = 'adm/wrapper/'.$thisfn;
9085: }
9086: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9087: $targetfn=$1;
9088: }
9089: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9090: &GDBM_READER(),0640)) {
9091: $syval=$hash{$targetfn};
9092: untie(%hash);
9093: }
9094: # ---------------------------------------------------------- There was an entry
9095: if ($syval) {
9096: #unless ($syval=~/\_\d+$/) {
9097: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9098: #&appenv({'request.ambiguous' => $thisfn});
9099: #return $env{$cache_str}='';
9100: #}
9101: #$syval.=$1;
9102: #}
9103: } else {
9104: # ------------------------------------------------------- Was not in symb table
9105: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9106: &GDBM_READER(),0640)) {
9107: # ---------------------------------------------- Get ID(s) for current resource
9108: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9109: unless ($ids) {
9110: $ids=$bighash{'ids_/'.$thisfn};
9111: }
9112: unless ($ids) {
9113: # alias?
9114: $ids=$bighash{'mapalias_'.$thisfn};
9115: }
9116: if ($ids) {
9117: # ------------------------------------------------------------------- Has ID(s)
9118: my @possibilities=split(/\,/,$ids);
9119: if ($#possibilities==0) {
9120: # ----------------------------------------------- There is only one possibility
9121: my ($mapid,$resid)=split(/\./,$ids);
9122: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9123: $resid,$thisfn);
9124: } elsif (!$donotrecurse) {
9125: # ------------------------------------------ There is more than one possibility
9126: my $realpossible=0;
9127: foreach my $id (@possibilities) {
9128: my $file=$bighash{'src_'.$id};
9129: if (&allowed('bre',$file)) {
9130: my ($mapid,$resid)=split(/\./,$id);
9131: if ($bighash{'map_type_'.$mapid} ne 'page') {
9132: $realpossible++;
9133: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9134: $resid,$thisfn);
9135: }
9136: }
9137: }
9138: if ($realpossible!=1) { $syval=''; }
9139: } else {
9140: $syval='';
9141: }
9142: }
9143: untie(%bighash)
9144: }
9145: }
9146: if ($syval) {
9147: return $env{$cache_str}=$syval;
9148: }
9149: }
9150: &appenv({'request.ambiguous' => $thisfn});
9151: return $env{$cache_str}='';
9152: }
9153:
9154: # ---------------------------------------------------------- Return random seed
9155:
9156: sub numval {
9157: my $txt=shift;
9158: $txt=~tr/A-J/0-9/;
9159: $txt=~tr/a-j/0-9/;
9160: $txt=~tr/K-T/0-9/;
9161: $txt=~tr/k-t/0-9/;
9162: $txt=~tr/U-Z/0-5/;
9163: $txt=~tr/u-z/0-5/;
9164: $txt=~s/\D//g;
9165: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9166: return int($txt);
9167: }
9168:
9169: sub numval2 {
9170: my $txt=shift;
9171: $txt=~tr/A-J/0-9/;
9172: $txt=~tr/a-j/0-9/;
9173: $txt=~tr/K-T/0-9/;
9174: $txt=~tr/k-t/0-9/;
9175: $txt=~tr/U-Z/0-5/;
9176: $txt=~tr/u-z/0-5/;
9177: $txt=~s/\D//g;
9178: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9179: my $total;
9180: foreach my $val (@txts) { $total+=$val; }
9181: if ($_64bit) { if ($total > 2**32) { return -1; } }
9182: return int($total);
9183: }
9184:
9185: sub numval3 {
9186: use integer;
9187: my $txt=shift;
9188: $txt=~tr/A-J/0-9/;
9189: $txt=~tr/a-j/0-9/;
9190: $txt=~tr/K-T/0-9/;
9191: $txt=~tr/k-t/0-9/;
9192: $txt=~tr/U-Z/0-5/;
9193: $txt=~tr/u-z/0-5/;
9194: $txt=~s/\D//g;
9195: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9196: my $total;
9197: foreach my $val (@txts) { $total+=$val; }
9198: if ($_64bit) { $total=(($total<<32)>>32); }
9199: return $total;
9200: }
9201:
9202: sub digest {
9203: my ($data)=@_;
9204: my $digest=&Digest::MD5::md5($data);
9205: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9206: my ($e,$f);
9207: {
9208: use integer;
9209: $e=($a+$b);
9210: $f=($c+$d);
9211: if ($_64bit) {
9212: $e=(($e<<32)>>32);
9213: $f=(($f<<32)>>32);
9214: }
9215: }
9216: if (wantarray) {
9217: return ($e,$f);
9218: } else {
9219: my $g;
9220: {
9221: use integer;
9222: $g=($e+$f);
9223: if ($_64bit) {
9224: $g=(($g<<32)>>32);
9225: }
9226: }
9227: return $g;
9228: }
9229: }
9230:
9231: sub latest_rnd_algorithm_id {
9232: return '64bit5';
9233: }
9234:
9235: sub get_rand_alg {
9236: my ($courseid)=@_;
9237: if (!$courseid) { $courseid=(&whichuser())[1]; }
9238: if ($courseid) {
9239: return $env{"course.$courseid.rndseed"};
9240: }
9241: return &latest_rnd_algorithm_id();
9242: }
9243:
9244: sub validCODE {
9245: my ($CODE)=@_;
9246: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9247: return 0;
9248: }
9249:
9250: sub getCODE {
9251: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9252: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9253: defined($Apache::lonhomework::parsing_a_task) ) &&
9254: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9255: return $Apache::lonhomework::history{'resource.CODE'};
9256: }
9257: return undef;
9258: }
9259:
9260: sub rndseed {
9261: my ($symb,$courseid,$domain,$username)=@_;
9262: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9263: if (!defined($symb)) {
9264: unless ($symb=$wsymb) { return time; }
9265: }
9266: if (!$courseid) { $courseid=$wcourseid; }
9267: if (!$domain) { $domain=$wdomain; }
9268: if (!$username) { $username=$wusername }
9269: my $which=&get_rand_alg();
9270:
9271: if (defined(&getCODE())) {
9272: if ($which eq '64bit5') {
9273: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9274: } elsif ($which eq '64bit4') {
9275: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9276: } else {
9277: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9278: }
9279: } elsif ($which eq '64bit5') {
9280: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9281: } elsif ($which eq '64bit4') {
9282: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9283: } elsif ($which eq '64bit3') {
9284: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9285: } elsif ($which eq '64bit2') {
9286: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9287: } elsif ($which eq '64bit') {
9288: return &rndseed_64bit($symb,$courseid,$domain,$username);
9289: }
9290: return &rndseed_32bit($symb,$courseid,$domain,$username);
9291: }
9292:
9293: sub rndseed_32bit {
9294: my ($symb,$courseid,$domain,$username)=@_;
9295: {
9296: use integer;
9297: my $symbchck=unpack("%32C*",$symb) << 27;
9298: my $symbseed=numval($symb) << 22;
9299: my $namechck=unpack("%32C*",$username) << 17;
9300: my $nameseed=numval($username) << 12;
9301: my $domainseed=unpack("%32C*",$domain) << 7;
9302: my $courseseed=unpack("%32C*",$courseid);
9303: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9304: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9305: #&logthis("rndseed :$num:$symb");
9306: if ($_64bit) { $num=(($num<<32)>>32); }
9307: return $num;
9308: }
9309: }
9310:
9311: sub rndseed_64bit {
9312: my ($symb,$courseid,$domain,$username)=@_;
9313: {
9314: use integer;
9315: my $symbchck=unpack("%32S*",$symb) << 21;
9316: my $symbseed=numval($symb) << 10;
9317: my $namechck=unpack("%32S*",$username);
9318:
9319: my $nameseed=numval($username) << 21;
9320: my $domainseed=unpack("%32S*",$domain) << 10;
9321: my $courseseed=unpack("%32S*",$courseid);
9322:
9323: my $num1=$symbchck+$symbseed+$namechck;
9324: my $num2=$nameseed+$domainseed+$courseseed;
9325: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9326: #&logthis("rndseed :$num:$symb");
9327: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9328: return "$num1,$num2";
9329: }
9330: }
9331:
9332: sub rndseed_64bit2 {
9333: my ($symb,$courseid,$domain,$username)=@_;
9334: {
9335: use integer;
9336: # strings need to be an even # of cahracters long, it it is odd the
9337: # last characters gets thrown away
9338: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9339: my $symbseed=numval($symb) << 10;
9340: my $namechck=unpack("%32S*",$username.' ');
9341:
9342: my $nameseed=numval($username) << 21;
9343: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9344: my $courseseed=unpack("%32S*",$courseid.' ');
9345:
9346: my $num1=$symbchck+$symbseed+$namechck;
9347: my $num2=$nameseed+$domainseed+$courseseed;
9348: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9349: #&logthis("rndseed :$num:$symb");
9350: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9351: return "$num1,$num2";
9352: }
9353: }
9354:
9355: sub rndseed_64bit3 {
9356: my ($symb,$courseid,$domain,$username)=@_;
9357: {
9358: use integer;
9359: # strings need to be an even # of cahracters long, it it is odd the
9360: # last characters gets thrown away
9361: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9362: my $symbseed=numval2($symb) << 10;
9363: my $namechck=unpack("%32S*",$username.' ');
9364:
9365: my $nameseed=numval2($username) << 21;
9366: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9367: my $courseseed=unpack("%32S*",$courseid.' ');
9368:
9369: my $num1=$symbchck+$symbseed+$namechck;
9370: my $num2=$nameseed+$domainseed+$courseseed;
9371: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9372: #&logthis("rndseed :$num1:$num2:$_64bit");
9373: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9374:
9375: return "$num1:$num2";
9376: }
9377: }
9378:
9379: sub rndseed_64bit4 {
9380: my ($symb,$courseid,$domain,$username)=@_;
9381: {
9382: use integer;
9383: # strings need to be an even # of cahracters long, it it is odd the
9384: # last characters gets thrown away
9385: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9386: my $symbseed=numval3($symb) << 10;
9387: my $namechck=unpack("%32S*",$username.' ');
9388:
9389: my $nameseed=numval3($username) << 21;
9390: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9391: my $courseseed=unpack("%32S*",$courseid.' ');
9392:
9393: my $num1=$symbchck+$symbseed+$namechck;
9394: my $num2=$nameseed+$domainseed+$courseseed;
9395: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9396: #&logthis("rndseed :$num1:$num2:$_64bit");
9397: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9398:
9399: return "$num1:$num2";
9400: }
9401: }
9402:
9403: sub rndseed_64bit5 {
9404: my ($symb,$courseid,$domain,$username)=@_;
9405: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9406: return "$num1:$num2";
9407: }
9408:
9409: sub rndseed_CODE_64bit {
9410: my ($symb,$courseid,$domain,$username)=@_;
9411: {
9412: use integer;
9413: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9414: my $symbseed=numval2($symb);
9415: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9416: my $CODEseed=numval(&getCODE());
9417: my $courseseed=unpack("%32S*",$courseid.' ');
9418: my $num1=$symbseed+$CODEchck;
9419: my $num2=$CODEseed+$courseseed+$symbchck;
9420: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9421: #&logthis("rndseed :$num1:$num2:$symb");
9422: if ($_64bit) { $num1=(($num1<<32)>>32); }
9423: if ($_64bit) { $num2=(($num2<<32)>>32); }
9424: return "$num1:$num2";
9425: }
9426: }
9427:
9428: sub rndseed_CODE_64bit4 {
9429: my ($symb,$courseid,$domain,$username)=@_;
9430: {
9431: use integer;
9432: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9433: my $symbseed=numval3($symb);
9434: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9435: my $CODEseed=numval3(&getCODE());
9436: my $courseseed=unpack("%32S*",$courseid.' ');
9437: my $num1=$symbseed+$CODEchck;
9438: my $num2=$CODEseed+$courseseed+$symbchck;
9439: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9440: #&logthis("rndseed :$num1:$num2:$symb");
9441: if ($_64bit) { $num1=(($num1<<32)>>32); }
9442: if ($_64bit) { $num2=(($num2<<32)>>32); }
9443: return "$num1:$num2";
9444: }
9445: }
9446:
9447: sub rndseed_CODE_64bit5 {
9448: my ($symb,$courseid,$domain,$username)=@_;
9449: my $code = &getCODE();
9450: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9451: return "$num1:$num2";
9452: }
9453:
9454: sub setup_random_from_rndseed {
9455: my ($rndseed)=@_;
9456: if ($rndseed =~/([,:])/) {
9457: my ($num1,$num2)=split(/[,:]/,$rndseed);
9458: &Math::Random::random_set_seed(abs($num1),abs($num2));
9459: } else {
9460: &Math::Random::random_set_seed_from_phrase($rndseed);
9461: }
9462: }
9463:
9464: sub latest_receipt_algorithm_id {
9465: return 'receipt3';
9466: }
9467:
9468: sub recunique {
9469: my $fucourseid=shift;
9470: my $unique;
9471: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9472: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9473: $unique=$env{"course.$fucourseid.internal.encseed"};
9474: } else {
9475: $unique=$perlvar{'lonReceipt'};
9476: }
9477: return unpack("%32C*",$unique);
9478: }
9479:
9480: sub recprefix {
9481: my $fucourseid=shift;
9482: my $prefix;
9483: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9484: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9485: $prefix=$env{"course.$fucourseid.internal.encpref"};
9486: } else {
9487: $prefix=$perlvar{'lonHostID'};
9488: }
9489: return unpack("%32C*",$prefix);
9490: }
9491:
9492: sub ireceipt {
9493: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9494:
9495: my $return =&recprefix($fucourseid).'-';
9496:
9497: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9498: $env{'request.state'} eq 'construct') {
9499: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9500: return $return;
9501: }
9502:
9503: my $cuname=unpack("%32C*",$funame);
9504: my $cudom=unpack("%32C*",$fudom);
9505: my $cucourseid=unpack("%32C*",$fucourseid);
9506: my $cusymb=unpack("%32C*",$fusymb);
9507: my $cunique=&recunique($fucourseid);
9508: my $cpart=unpack("%32S*",$part);
9509: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9510:
9511: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9512:
9513: $return.= ($cunique%$cuname+
9514: $cunique%$cudom+
9515: $cusymb%$cuname+
9516: $cusymb%$cudom+
9517: $cucourseid%$cuname+
9518: $cucourseid%$cudom+
9519: $cpart%$cuname+
9520: $cpart%$cudom);
9521: } else {
9522: $return.= ($cunique%$cuname+
9523: $cunique%$cudom+
9524: $cusymb%$cuname+
9525: $cusymb%$cudom+
9526: $cucourseid%$cuname+
9527: $cucourseid%$cudom);
9528: }
9529: return $return;
9530: }
9531:
9532: sub receipt {
9533: my ($part)=@_;
9534: my ($symb,$courseid,$domain,$name) = &whichuser();
9535: return &ireceipt($name,$domain,$courseid,$symb,$part);
9536: }
9537:
9538: sub whichuser {
9539: my ($passedsymb)=@_;
9540: my ($symb,$courseid,$domain,$name,$publicuser);
9541: if (defined($env{'form.grade_symb'})) {
9542: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9543: my $allowed=&allowed('vgr',$tmp_courseid);
9544: if (!$allowed &&
9545: exists($env{'request.course.sec'}) &&
9546: $env{'request.course.sec'} !~ /^\s*$/) {
9547: $allowed=&allowed('vgr',$tmp_courseid.
9548: '/'.$env{'request.course.sec'});
9549: }
9550: if ($allowed) {
9551: ($symb)=&get_env_multiple('form.grade_symb');
9552: $courseid=$tmp_courseid;
9553: ($domain)=&get_env_multiple('form.grade_domain');
9554: ($name)=&get_env_multiple('form.grade_username');
9555: return ($symb,$courseid,$domain,$name,$publicuser);
9556: }
9557: }
9558: if (!$passedsymb) {
9559: $symb=&symbread();
9560: } else {
9561: $symb=$passedsymb;
9562: }
9563: $courseid=$env{'request.course.id'};
9564: $domain=$env{'user.domain'};
9565: $name=$env{'user.name'};
9566: if ($name eq 'public' && $domain eq 'public') {
9567: if (!defined($env{'form.username'})) {
9568: $env{'form.username'}.=time.rand(10000000);
9569: }
9570: $name.=$env{'form.username'};
9571: }
9572: return ($symb,$courseid,$domain,$name,$publicuser);
9573:
9574: }
9575:
9576: # ------------------------------------------------------------ Serves up a file
9577: # returns either the contents of the file or
9578: # -1 if the file doesn't exist
9579: #
9580: # if the target is a file that was uploaded via DOCS,
9581: # a check will be made to see if a current copy exists on the local server,
9582: # if it does this will be served, otherwise a copy will be retrieved from
9583: # the home server for the course and stored in /home/httpd/html/userfiles on
9584: # the local server.
9585:
9586: sub getfile {
9587: my ($file) = @_;
9588: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9589: &repcopy($file);
9590: return &readfile($file);
9591: }
9592:
9593: sub repcopy_userfile {
9594: my ($file)=@_;
9595: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9596: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9597: my ($cdom,$cnum,$filename) =
9598: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9599: my $uri="/uploaded/$cdom/$cnum/$filename";
9600: if (-e "$file") {
9601: # we already have a local copy, check it out
9602: my @fileinfo = stat($file);
9603: my $rtncode;
9604: my $info;
9605: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9606: if ($lwpresp ne 'ok') {
9607: # there is no such file anymore, even though we had a local copy
9608: if ($rtncode eq '404') {
9609: unlink($file);
9610: }
9611: return -1;
9612: }
9613: if ($info < $fileinfo[9]) {
9614: # nice, the file we have is up-to-date, just say okay
9615: return 'ok';
9616: } else {
9617: # the file is outdated, get rid of it
9618: unlink($file);
9619: }
9620: }
9621: # one way or the other, at this point, we don't have the file
9622: # construct the correct path for the file
9623: my @parts = ($cdom,$cnum);
9624: if ($filename =~ m|^(.+)/[^/]+$|) {
9625: push @parts, split(/\//,$1);
9626: }
9627: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9628: foreach my $part (@parts) {
9629: $path .= '/'.$part;
9630: if (!-e $path) {
9631: mkdir($path,0770);
9632: }
9633: }
9634: # now the path exists for sure
9635: # get a user agent
9636: my $ua=new LWP::UserAgent;
9637: my $transferfile=$file.'.in.transfer';
9638: # FIXME: this should flock
9639: if (-e $transferfile) { return 'ok'; }
9640: my $request;
9641: $uri=~s/^\///;
9642: my $homeserver = &homeserver($cnum,$cdom);
9643: my $protocol = $protocol{$homeserver};
9644: $protocol = 'http' if ($protocol ne 'https');
9645: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9646: my $response=$ua->request($request,$transferfile);
9647: # did it work?
9648: if ($response->is_error()) {
9649: unlink($transferfile);
9650: &logthis("Userfile repcopy failed for $uri");
9651: return -1;
9652: }
9653: # worked, rename the transfer file
9654: rename($transferfile,$file);
9655: return 'ok';
9656: }
9657:
9658: sub tokenwrapper {
9659: my $uri=shift;
9660: $uri=~s|^https?\://([^/]+)||;
9661: $uri=~s|^/||;
9662: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9663: my $token=$1;
9664: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9665: if ($udom && $uname && $file) {
9666: $file=~s|(\?\.*)*$||;
9667: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9668: my $homeserver = &homeserver($uname,$udom);
9669: my $protocol = $protocol{$homeserver};
9670: $protocol = 'http' if ($protocol ne 'https');
9671: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9672: (($uri=~/\?/)?'&':'?').'token='.$token.
9673: '&tokenissued='.$perlvar{'lonHostID'};
9674: } else {
9675: return '/adm/notfound.html';
9676: }
9677: }
9678:
9679: # call with reqtype HEAD: get last modification time
9680: # call with reqtype GET: get the file contents
9681: # Do not call this with reqtype GET for large files! It loads everything into memory
9682: #
9683: sub getuploaded {
9684: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9685: $uri=~s/^\///;
9686: my $homeserver = &homeserver($cnum,$cdom);
9687: my $protocol = $protocol{$homeserver};
9688: $protocol = 'http' if ($protocol ne 'https');
9689: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9690: my $ua=new LWP::UserAgent;
9691: my $request=new HTTP::Request($reqtype,$uri);
9692: my $response=$ua->request($request);
9693: $$rtncode = $response->code;
9694: if (! $response->is_success()) {
9695: return 'failed';
9696: }
9697: if ($reqtype eq 'HEAD') {
9698: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9699: } elsif ($reqtype eq 'GET') {
9700: $$info = $response->content;
9701: }
9702: return 'ok';
9703: }
9704:
9705: sub readfile {
9706: my $file = shift;
9707: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9708: my $fh;
9709: open($fh,"<$file");
9710: my $a='';
9711: while (my $line = <$fh>) { $a .= $line; }
9712: return $a;
9713: }
9714:
9715: sub filelocation {
9716: my ($dir,$file) = @_;
9717: my $location;
9718: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9719:
9720: if ($file =~ m-^/adm/-) {
9721: $file=~s-^/adm/wrapper/-/-;
9722: $file=~s-^/adm/coursedocs/showdoc/-/-;
9723: }
9724:
9725: if ($file=~m:^/~:) { # is a contruction space reference
9726: $location = $file;
9727: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9728: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9729: # is a correct contruction space reference
9730: $location = $file;
9731: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9732: $location = $file;
9733: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9734: my ($udom,$uname,$filename)=
9735: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9736: my $home=&homeserver($uname,$udom);
9737: my $is_me=0;
9738: my @ids=¤t_machine_ids();
9739: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9740: if ($is_me) {
9741: $location=&propath($udom,$uname).'/userfiles/'.$filename;
9742: } else {
9743: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9744: $udom.'/'.$uname.'/'.$filename;
9745: }
9746: } elsif ($file =~ m-^/adm/-) {
9747: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9748: } else {
9749: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9750: $file=~s:^/res/:/:;
9751: if ( !( $file =~ m:^/:) ) {
9752: $location = $dir. '/'.$file;
9753: } else {
9754: $location = '/home/httpd/html/res'.$file;
9755: }
9756: }
9757: $location=~s://+:/:g; # remove duplicate /
9758: while ($location=~m{/\.\./}) {
9759: if ($location =~ m{/[^/]+/\.\./}) {
9760: $location=~ s{/[^/]+/\.\./}{/}g;
9761: } else {
9762: $location=~ s{/\.\./}{/}g;
9763: }
9764: } #remove dir/..
9765: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9766: return $location;
9767: }
9768:
9769: sub hreflocation {
9770: my ($dir,$file)=@_;
9771: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9772: $file=filelocation($dir,$file);
9773: } elsif ($file=~m-^/adm/-) {
9774: $file=~s-^/adm/wrapper/-/-;
9775: $file=~s-^/adm/coursedocs/showdoc/-/-;
9776: }
9777: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9778: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9779: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9780: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9781: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9782: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9783: -/uploaded/$1/$2/-x;
9784: }
9785: if ($file=~ m{^/userfiles/}) {
9786: $file =~ s{^/userfiles/}{/uploaded/};
9787: }
9788: return $file;
9789: }
9790:
9791: sub current_machine_domains {
9792: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9793: }
9794:
9795: sub machine_domains {
9796: my ($hostname) = @_;
9797: my @domains;
9798: my %hostname = &all_hostnames();
9799: while( my($id, $name) = each(%hostname)) {
9800: # &logthis("-$id-$name-$hostname-");
9801: if ($hostname eq $name) {
9802: push(@domains,&host_domain($id));
9803: }
9804: }
9805: return @domains;
9806: }
9807:
9808: sub current_machine_ids {
9809: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9810: }
9811:
9812: sub machine_ids {
9813: my ($hostname) = @_;
9814: $hostname ||= &hostname($perlvar{'lonHostID'});
9815: my @ids;
9816: my %name_to_host = &all_names();
9817: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9818: return @{ $name_to_host{$hostname} };
9819: }
9820: return;
9821: }
9822:
9823: sub additional_machine_domains {
9824: my @domains;
9825: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9826: while( my $line = <$fh>) {
9827: $line =~ s/\s//g;
9828: push(@domains,$line);
9829: }
9830: return @domains;
9831: }
9832:
9833: sub default_login_domain {
9834: my $domain = $perlvar{'lonDefDomain'};
9835: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9836: foreach my $posdom (¤t_machine_domains(),
9837: &additional_machine_domains()) {
9838: if (lc($posdom) eq lc($testdomain)) {
9839: $domain=$posdom;
9840: last;
9841: }
9842: }
9843: return $domain;
9844: }
9845:
9846: # ------------------------------------------------------------- Declutters URLs
9847:
9848: sub declutter {
9849: my $thisfn=shift;
9850: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9851: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9852: $thisfn=~s/^\///;
9853: $thisfn=~s|^adm/wrapper/||;
9854: $thisfn=~s|^adm/coursedocs/showdoc/||;
9855: $thisfn=~s/^res\///;
9856: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9857: $thisfn=~s/\?.+$//;
9858: }
9859: return $thisfn;
9860: }
9861:
9862: # ------------------------------------------------------------- Clutter up URLs
9863:
9864: sub clutter {
9865: my $thisfn='/'.&declutter(shift);
9866: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9867: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9868: $thisfn='/res'.$thisfn;
9869: }
9870: if ($thisfn !~m|^/adm|) {
9871: if ($thisfn =~ m|^/ext/|) {
9872: $thisfn='/adm/wrapper'.$thisfn;
9873: } else {
9874: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9875: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9876: if ($embstyle eq 'ssi'
9877: || ($embstyle eq 'hdn')
9878: || ($embstyle eq 'rat')
9879: || ($embstyle eq 'prv')
9880: || ($embstyle eq 'ign')) {
9881: #do nothing with these
9882: } elsif (($embstyle eq 'img')
9883: || ($embstyle eq 'emb')
9884: || ($embstyle eq 'wrp')) {
9885: $thisfn='/adm/wrapper'.$thisfn;
9886: } elsif ($embstyle eq 'unk'
9887: && $thisfn!~/\.(sequence|page)$/) {
9888: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9889: } else {
9890: # &logthis("Got a blank emb style");
9891: }
9892: }
9893: }
9894: return $thisfn;
9895: }
9896:
9897: sub clutter_with_no_wrapper {
9898: my $uri = &clutter(shift);
9899: if ($uri =~ m-^/adm/-) {
9900: $uri =~ s-^/adm/wrapper/-/-;
9901: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9902: }
9903: return $uri;
9904: }
9905:
9906: sub freeze_escape {
9907: my ($value)=@_;
9908: if (ref($value)) {
9909: $value=&nfreeze($value);
9910: return '__FROZEN__'.&escape($value);
9911: }
9912: return &escape($value);
9913: }
9914:
9915:
9916: sub thaw_unescape {
9917: my ($value)=@_;
9918: if ($value =~ /^__FROZEN__/) {
9919: substr($value,0,10,undef);
9920: $value=&unescape($value);
9921: return &thaw($value);
9922: }
9923: return &unescape($value);
9924: }
9925:
9926: sub correct_line_ends {
9927: my ($result)=@_;
9928: $$result =~s/\r\n/\n/mg;
9929: $$result =~s/\r/\n/mg;
9930: }
9931: # ================================================================ Main Program
9932:
9933: sub goodbye {
9934: &logthis("Starting Shut down");
9935: #not converted to using infrastruture and probably shouldn't be
9936: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9937: #converted
9938: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9939: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9940: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9941: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9942: #1.1 only
9943: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9944: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9945: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9946: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9947: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9948: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9949: &logthis(sprintf("%-20s is %s",'hits',$hits));
9950: &flushcourselogs();
9951: &logthis("Shutting down");
9952: }
9953:
9954: sub get_dns {
9955: my ($url,$func,$ignore_cache) = @_;
9956: if (!$ignore_cache) {
9957: my ($content,$cached)=
9958: &Apache::lonnet::is_cached_new('dns',$url);
9959: if ($cached) {
9960: &$func($content);
9961: return;
9962: }
9963: }
9964:
9965: my %alldns;
9966: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9967: foreach my $dns (<$config>) {
9968: next if ($dns !~ /^\^(\S*)/x);
9969: my $line = $1;
9970: my ($host,$protocol) = split(/:/,$line);
9971: if ($protocol ne 'https') {
9972: $protocol = 'http';
9973: }
9974: $alldns{$host} = $protocol;
9975: }
9976: while (%alldns) {
9977: my ($dns) = keys(%alldns);
9978: my $ua=new LWP::UserAgent;
9979: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
9980: my $response=$ua->request($request);
9981: delete($alldns{$dns});
9982: next if ($response->is_error());
9983: my @content = split("\n",$response->content);
9984: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
9985: &$func(\@content);
9986: return;
9987: }
9988: close($config);
9989: my $which = (split('/',$url))[3];
9990: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9991: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9992: my @content = <$config>;
9993: &$func(\@content);
9994: return;
9995: }
9996: # ------------------------------------------------------------ Read domain file
9997: {
9998: my $loaded;
9999: my %domain;
10000:
10001: sub parse_domain_tab {
10002: my ($lines) = @_;
10003: foreach my $line (@$lines) {
10004: next if ($line =~ /^(\#|\s*$ )/x);
10005:
10006: chomp($line);
10007: my ($name,@elements) = split(/:/,$line,9);
10008: my %this_domain;
10009: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10010: 'lang_def', 'city', 'longi', 'lati',
10011: 'primary') {
10012: $this_domain{$field} = shift(@elements);
10013: }
10014: $domain{$name} = \%this_domain;
10015: }
10016: }
10017:
10018: sub reset_domain_info {
10019: undef($loaded);
10020: undef(%domain);
10021: }
10022:
10023: sub load_domain_tab {
10024: my ($ignore_cache) = @_;
10025: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10026: my $fh;
10027: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10028: my @lines = <$fh>;
10029: &parse_domain_tab(\@lines);
10030: }
10031: close($fh);
10032: $loaded = 1;
10033: }
10034:
10035: sub domain {
10036: &load_domain_tab() if (!$loaded);
10037:
10038: my ($name,$what) = @_;
10039: return if ( !exists($domain{$name}) );
10040:
10041: if (!$what) {
10042: return $domain{$name}{'description'};
10043: }
10044: return $domain{$name}{$what};
10045: }
10046:
10047: sub domain_info {
10048: &load_domain_tab() if (!$loaded);
10049: return %domain;
10050: }
10051:
10052: }
10053:
10054:
10055: # ------------------------------------------------------------- Read hosts file
10056: {
10057: my %hostname;
10058: my %hostdom;
10059: my %libserv;
10060: my $loaded;
10061: my %name_to_host;
10062: my %internetdom;
10063:
10064: sub parse_hosts_tab {
10065: my ($file) = @_;
10066: foreach my $configline (@$file) {
10067: next if ($configline =~ /^(\#|\s*$ )/x);
10068: next if ($configline =~ /^\^/);
10069: chomp($configline);
10070: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10071: $name=~s/\s//g;
10072: if ($id && $domain && $role && $name) {
10073: $hostname{$id}=$name;
10074: push(@{$name_to_host{$name}}, $id);
10075: $hostdom{$id}=$domain;
10076: if ($role eq 'library') { $libserv{$id}=$name; }
10077: if (defined($protocol)) {
10078: if ($protocol eq 'https') {
10079: $protocol{$id} = $protocol;
10080: } else {
10081: $protocol{$id} = 'http';
10082: }
10083: } else {
10084: $protocol{$id} = 'http';
10085: }
10086: if (defined($intdom)) {
10087: $internetdom{$id} = $intdom;
10088: }
10089: }
10090: }
10091: }
10092:
10093: sub reset_hosts_info {
10094: &purge_remembered();
10095: &reset_domain_info();
10096: &reset_hosts_ip_info();
10097: undef(%name_to_host);
10098: undef(%hostname);
10099: undef(%hostdom);
10100: undef(%libserv);
10101: undef($loaded);
10102: }
10103:
10104: sub load_hosts_tab {
10105: my ($ignore_cache) = @_;
10106: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
10107: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10108: my @config = <$config>;
10109: &parse_hosts_tab(\@config);
10110: close($config);
10111: $loaded=1;
10112: }
10113:
10114: sub hostname {
10115: &load_hosts_tab() if (!$loaded);
10116:
10117: my ($lonid) = @_;
10118: return $hostname{$lonid};
10119: }
10120:
10121: sub all_hostnames {
10122: &load_hosts_tab() if (!$loaded);
10123:
10124: return %hostname;
10125: }
10126:
10127: sub all_names {
10128: &load_hosts_tab() if (!$loaded);
10129:
10130: return %name_to_host;
10131: }
10132:
10133: sub all_host_domain {
10134: &load_hosts_tab() if (!$loaded);
10135: return %hostdom;
10136: }
10137:
10138: sub is_library {
10139: &load_hosts_tab() if (!$loaded);
10140:
10141: return exists($libserv{$_[0]});
10142: }
10143:
10144: sub all_library {
10145: &load_hosts_tab() if (!$loaded);
10146:
10147: return %libserv;
10148: }
10149:
10150: sub unique_library {
10151: #2x reverse removes all hostnames that appear more than once
10152: my %unique = reverse &all_library();
10153: return reverse %unique;
10154: }
10155:
10156: sub get_servers {
10157: &load_hosts_tab() if (!$loaded);
10158:
10159: my ($domain,$type) = @_;
10160: my %possible_hosts = ($type eq 'library') ? %libserv
10161: : %hostname;
10162: my %result;
10163: if (ref($domain) eq 'ARRAY') {
10164: while ( my ($host,$hostname) = each(%possible_hosts)) {
10165: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10166: $result{$host} = $hostname;
10167: }
10168: }
10169: } else {
10170: while ( my ($host,$hostname) = each(%possible_hosts)) {
10171: if ($hostdom{$host} eq $domain) {
10172: $result{$host} = $hostname;
10173: }
10174: }
10175: }
10176: return %result;
10177: }
10178:
10179: sub get_unique_servers {
10180: my %unique = reverse &get_servers(@_);
10181: return reverse %unique;
10182: }
10183:
10184: sub host_domain {
10185: &load_hosts_tab() if (!$loaded);
10186:
10187: my ($lonid) = @_;
10188: return $hostdom{$lonid};
10189: }
10190:
10191: sub all_domains {
10192: &load_hosts_tab() if (!$loaded);
10193:
10194: my %seen;
10195: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10196: return @uniq;
10197: }
10198:
10199: sub internet_dom {
10200: &load_hosts_tab() if (!$loaded);
10201:
10202: my ($lonid) = @_;
10203: return $internetdom{$lonid};
10204: }
10205: }
10206:
10207: {
10208: my %iphost;
10209: my %name_to_ip;
10210: my %lonid_to_ip;
10211:
10212: sub get_hosts_from_ip {
10213: my ($ip) = @_;
10214: my %iphosts = &get_iphost();
10215: if (ref($iphosts{$ip})) {
10216: return @{$iphosts{$ip}};
10217: }
10218: return;
10219: }
10220:
10221: sub reset_hosts_ip_info {
10222: undef(%iphost);
10223: undef(%name_to_ip);
10224: undef(%lonid_to_ip);
10225: }
10226:
10227: sub get_host_ip {
10228: my ($lonid) = @_;
10229: if (exists($lonid_to_ip{$lonid})) {
10230: return $lonid_to_ip{$lonid};
10231: }
10232: my $name=&hostname($lonid);
10233: my $ip = gethostbyname($name);
10234: return if (!$ip || length($ip) ne 4);
10235: $ip=inet_ntoa($ip);
10236: $name_to_ip{$name} = $ip;
10237: $lonid_to_ip{$lonid} = $ip;
10238: return $ip;
10239: }
10240:
10241: sub get_iphost {
10242: my ($ignore_cache) = @_;
10243:
10244: if (!$ignore_cache) {
10245: if (%iphost) {
10246: return %iphost;
10247: }
10248: my ($ip_info,$cached)=
10249: &Apache::lonnet::is_cached_new('iphost','iphost');
10250: if ($cached) {
10251: %iphost = %{$ip_info->[0]};
10252: %name_to_ip = %{$ip_info->[1]};
10253: %lonid_to_ip = %{$ip_info->[2]};
10254: return %iphost;
10255: }
10256: }
10257:
10258: # get yesterday's info for fallback
10259: my %old_name_to_ip;
10260: my ($ip_info,$cached)=
10261: &Apache::lonnet::is_cached_new('iphost','iphost');
10262: if ($cached) {
10263: %old_name_to_ip = %{$ip_info->[1]};
10264: }
10265:
10266: my %name_to_host = &all_names();
10267: foreach my $name (keys(%name_to_host)) {
10268: my $ip;
10269: if (!exists($name_to_ip{$name})) {
10270: $ip = gethostbyname($name);
10271: if (!$ip || length($ip) ne 4) {
10272: if (defined($old_name_to_ip{$name})) {
10273: $ip = $old_name_to_ip{$name};
10274: &logthis("Can't find $name defaulting to old $ip");
10275: } else {
10276: &logthis("Name $name no IP found");
10277: next;
10278: }
10279: } else {
10280: $ip=inet_ntoa($ip);
10281: }
10282: $name_to_ip{$name} = $ip;
10283: } else {
10284: $ip = $name_to_ip{$name};
10285: }
10286: foreach my $id (@{ $name_to_host{$name} }) {
10287: $lonid_to_ip{$id} = $ip;
10288: }
10289: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10290: }
10291: &Apache::lonnet::do_cache_new('iphost','iphost',
10292: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10293: 48*60*60);
10294:
10295: return %iphost;
10296: }
10297:
10298: #
10299: # Given a DNS returns the loncapa host name for that DNS
10300: #
10301: sub host_from_dns {
10302: my ($dns) = @_;
10303: my @hosts;
10304: my $ip;
10305:
10306: if (exists($name_to_ip{$dns})) {
10307: $ip = $name_to_ip{$dns};
10308: }
10309: if (!$ip) {
10310: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10311: if (length($ip) == 4) {
10312: $ip = &IO::Socket::inet_ntoa($ip);
10313: }
10314: }
10315: if ($ip) {
10316: @hosts = get_hosts_from_ip($ip);
10317: return $hosts[0];
10318: }
10319: return undef;
10320: }
10321:
10322: sub get_internet_names {
10323: my ($lonid) = @_;
10324: return if ($lonid eq '');
10325: my ($idnref,$cached)=
10326: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10327: if ($cached) {
10328: return $idnref;
10329: }
10330: my $ip = &get_host_ip($lonid);
10331: my @hosts = &get_hosts_from_ip($ip);
10332: my %iphost = &get_iphost();
10333: my (@idns,%seen);
10334: foreach my $id (@hosts) {
10335: my $dom = &host_domain($id);
10336: my $prim_id = &domain($dom,'primary');
10337: my $prim_ip = &get_host_ip($prim_id);
10338: next if ($seen{$prim_ip});
10339: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10340: foreach my $id (@{$iphost{$prim_ip}}) {
10341: my $intdom = &internet_dom($id);
10342: unless (grep(/^\Q$intdom\E$/,@idns)) {
10343: push(@idns,$intdom);
10344: }
10345: }
10346: }
10347: $seen{$prim_ip} = 1;
10348: }
10349: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10350: }
10351:
10352: }
10353:
10354: sub all_loncaparevs {
10355: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10356: }
10357:
10358: BEGIN {
10359:
10360: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10361: unless ($readit) {
10362: {
10363: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10364: %perlvar = (%perlvar,%{$configvars});
10365: }
10366:
10367:
10368: # ------------------------------------------------------ Read spare server file
10369: {
10370: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10371:
10372: while (my $configline=<$config>) {
10373: chomp($configline);
10374: if ($configline) {
10375: my ($host,$type) = split(':',$configline,2);
10376: if (!defined($type) || $type eq '') { $type = 'default' };
10377: push(@{ $spareid{$type} }, $host);
10378: }
10379: }
10380: close($config);
10381: }
10382: # ------------------------------------------------------------ Read permissions
10383: {
10384: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10385:
10386: while (my $configline=<$config>) {
10387: chomp($configline);
10388: if ($configline) {
10389: my ($role,$perm)=split(/ /,$configline);
10390: if ($perm ne '') { $pr{$role}=$perm; }
10391: }
10392: }
10393: close($config);
10394: }
10395:
10396: # -------------------------------------------- Read plain texts for permissions
10397: {
10398: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10399:
10400: while (my $configline=<$config>) {
10401: chomp($configline);
10402: if ($configline) {
10403: my ($short,@plain)=split(/:/,$configline);
10404: %{$prp{$short}} = ();
10405: if (@plain > 0) {
10406: $prp{$short}{'std'} = $plain[0];
10407: for (my $i=1; $i<@plain; $i++) {
10408: $prp{$short}{'alt'.$i} = $plain[$i];
10409: }
10410: }
10411: }
10412: }
10413: close($config);
10414: }
10415:
10416: # ---------------------------------------------------------- Read package table
10417: {
10418: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10419:
10420: while (my $configline=<$config>) {
10421: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10422: chomp($configline);
10423: my ($short,$plain)=split(/:/,$configline);
10424: my ($pack,$name)=split(/\&/,$short);
10425: if ($plain ne '') {
10426: $packagetab{$pack.'&'.$name.'&name'}=$name;
10427: $packagetab{$short}=$plain;
10428: }
10429: }
10430: close($config);
10431: }
10432:
10433: # ---------------------------------------------------------- Read loncaparev table
10434: {
10435: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10436: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10437: while (my $configline=<$config>) {
10438: chomp($configline);
10439: my ($hostid,$loncaparev)=split(/:/,$configline);
10440: $loncaparevs{$hostid}=$loncaparev;
10441: }
10442: close($config);
10443: }
10444: }
10445: }
10446:
10447: # ---------------------------------------------------------- Read serverhostID table
10448: {
10449: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10450: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10451: while (my $configline=<$config>) {
10452: chomp($configline);
10453: my ($name,$id)=split(/:/,$configline);
10454: $serverhomeIDs{$name}=$id;
10455: }
10456: close($config);
10457: }
10458: }
10459: }
10460:
10461: {
10462: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10463: if (-e $file) {
10464: my $parser = HTML::LCParser->new($file);
10465: while (my $token = $parser->get_token()) {
10466: if ($token->[0] eq 'S') {
10467: my $item = $token->[1];
10468: my $name = $token->[2]{'name'};
10469: my $value = $token->[2]{'value'};
10470: if ($item ne '' && $name ne '' && $value ne '') {
10471: my $release = $parser->get_text();
10472: $release =~ s/(^\s*|\s*$ )//gx;
10473: $needsrelease{$item.':'.$name.':'.$value} = $release;
10474: }
10475: }
10476: }
10477: }
10478: }
10479:
10480: # ------------- set up temporary directory
10481: {
10482: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
10483:
10484: }
10485:
10486: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10487: 'compress_threshold'=> 20_000,
10488: });
10489:
10490: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10491: $dumpcount=0;
10492: $locknum=0;
10493:
10494: &logtouch();
10495: &logthis('<font color="yellow">INFO: Read configuration</font>');
10496: $readit=1;
10497: {
10498: use integer;
10499: my $test=(2**32)+1;
10500: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10501: &logthis(" Detected 64bit platform ($_64bit)");
10502: }
10503: }
10504: }
10505:
10506: 1;
10507: __END__
10508:
10509: =pod
10510:
10511: =head1 NAME
10512:
10513: Apache::lonnet - Subroutines to ask questions about things in the network.
10514:
10515: =head1 SYNOPSIS
10516:
10517: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10518:
10519: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10520:
10521: Common parameters:
10522:
10523: =over 4
10524:
10525: =item *
10526:
10527: $uname : an internal username (if $cname expecting a course Id specifically)
10528:
10529: =item *
10530:
10531: $udom : a domain (if $cdom expecting a course's domain specifically)
10532:
10533: =item *
10534:
10535: $symb : a resource instance identifier
10536:
10537: =item *
10538:
10539: $namespace : the name of a .db file that contains the data needed or
10540: being set.
10541:
10542: =back
10543:
10544: =head1 OVERVIEW
10545:
10546: lonnet provides subroutines which interact with the
10547: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10548: about classes, users, and resources.
10549:
10550: For many of these objects you can also use this to store data about
10551: them or modify them in various ways.
10552:
10553: =head2 Symbs
10554:
10555: To identify a specific instance of a resource, LON-CAPA uses symbols
10556: or "symbs"X<symb>. These identifiers are built from the URL of the
10557: map, the resource number of the resource in the map, and the URL of
10558: the resource itself. The latter is somewhat redundant, but might help
10559: if maps change.
10560:
10561: An example is
10562:
10563: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10564:
10565: The respective map entry is
10566:
10567: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10568: title="Problem 2">
10569: </resource>
10570:
10571: Symbs are used by the random number generator, as well as to store and
10572: restore data specific to a certain instance of for example a problem.
10573:
10574: =head2 Storing And Retrieving Data
10575:
10576: X<store()>X<cstore()>X<restore()>Three of the most important functions
10577: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10578: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10579: is is the non-critical message twin of cstore. These functions are for
10580: handlers to store a perl hash to a user's permanent data space in an
10581: easy manner, and to retrieve it again on another call. It is expected
10582: that a handler would use this once at the beginning to retrieve data,
10583: and then again once at the end to send only the new data back.
10584:
10585: The data is stored in the user's data directory on the user's
10586: homeserver under the ID of the course.
10587:
10588: The hash that is returned by restore will have all of the previous
10589: value for all of the elements of the hash.
10590:
10591: Example:
10592:
10593: #creating a hash
10594: my %hash;
10595: $hash{'foo'}='bar';
10596:
10597: #storing it
10598: &Apache::lonnet::cstore(\%hash);
10599:
10600: #changing a value
10601: $hash{'foo'}='notbar';
10602:
10603: #adding a new value
10604: $hash{'bar'}='foo';
10605: &Apache::lonnet::cstore(\%hash);
10606:
10607: #retrieving the hash
10608: my %history=&Apache::lonnet::restore();
10609:
10610: #print the hash
10611: foreach my $key (sort(keys(%history))) {
10612: print("\%history{$key} = $history{$key}");
10613: }
10614:
10615: Will print out:
10616:
10617: %history{1:foo} = bar
10618: %history{1:keys} = foo:timestamp
10619: %history{1:timestamp} = 990455579
10620: %history{2:bar} = foo
10621: %history{2:foo} = notbar
10622: %history{2:keys} = foo:bar:timestamp
10623: %history{2:timestamp} = 990455580
10624: %history{bar} = foo
10625: %history{foo} = notbar
10626: %history{timestamp} = 990455580
10627: %history{version} = 2
10628:
10629: Note that the special hash entries C<keys>, C<version> and
10630: C<timestamp> were added to the hash. C<version> will be equal to the
10631: total number of versions of the data that have been stored. The
10632: C<timestamp> attribute will be the UNIX time the hash was
10633: stored. C<keys> is available in every historical section to list which
10634: keys were added or changed at a specific historical revision of a
10635: hash.
10636:
10637: B<Warning>: do not store the hash that restore returns directly. This
10638: will cause a mess since it will restore the historical keys as if the
10639: were new keys. I.E. 1:foo will become 1:1:foo etc.
10640:
10641: Calling convention:
10642:
10643: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10644: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10645:
10646: For more detailed information, see lonnet specific documentation.
10647:
10648: =head1 RETURN MESSAGES
10649:
10650: =over 4
10651:
10652: =item * B<con_lost>: unable to contact remote host
10653:
10654: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10655: when the connection is brought back up
10656:
10657: =item * B<con_failed>: unable to contact remote host and unable to save message
10658: for later delivery
10659:
10660: =item * B<error:>: an error a occurred, a description of the error follows the :
10661:
10662: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10663: that was requested
10664:
10665: =back
10666:
10667: =head1 PUBLIC SUBROUTINES
10668:
10669: =head2 Session Environment Functions
10670:
10671: =over 4
10672:
10673: =item *
10674: X<appenv()>
10675: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10676: the user envirnoment file, and will be restored for each access this
10677: user makes during this session, also modifies the %env for the current
10678: process. Optional rolesarrayref - if defined contains a reference to an array
10679: of roles which are exempt from the restriction on modifying user.role entries
10680: in the user's environment.db and in %env.
10681:
10682: =item *
10683: X<delenv()>
10684: B<delenv($delthis,$regexp)>: removes all items from the session
10685: environment file that begin with $delthis. If the
10686: optional second arg - $regexp - is true, $delthis is treated as a
10687: regular expression, otherwise \Q$delthis\E is used.
10688: The values are also deleted from the current processes %env.
10689:
10690: =item * get_env_multiple($name)
10691:
10692: gets $name from the %env hash, it seemlessly handles the cases where multiple
10693: values may be defined and end up as an array ref.
10694:
10695: returns an array of values
10696:
10697: =back
10698:
10699: =head2 User Information
10700:
10701: =over 4
10702:
10703: =item *
10704: X<queryauthenticate()>
10705: B<queryauthenticate($uname,$udom)>: try to determine user's current
10706: authentication scheme
10707:
10708: =item *
10709: X<authenticate()>
10710: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10711: authenticate user from domain's lib servers (first use the current
10712: one). C<$upass> should be the users password.
10713: $checkdefauth is optional (value is 1 if a check should be made to
10714: authenticate user using default authentication method, and allow
10715: account creation if username does not have account in the domain).
10716: $clientcancheckhost is optional (value is 1 if checking whether the
10717: server can host will occur on the client side in lonauth.pm).
10718:
10719: =item *
10720: X<homeserver()>
10721: B<homeserver($uname,$udom)>: find the server which has
10722: the user's directory and files (there must be only one), this caches
10723: the answer, and also caches if there is a borken connection.
10724:
10725: =item *
10726: X<idget()>
10727: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10728: (IDs are a unique resource in a domain, there must be only 1 ID per
10729: username, and only 1 username per ID in a specific domain) (returns
10730: hash: id=>name,id=>name)
10731:
10732: =item *
10733: X<idrget()>
10734: B<idrget($udom,@unames)>: find the IDs behind a list of
10735: usernames (returns hash: name=>id,name=>id)
10736:
10737: =item *
10738: X<idput()>
10739: B<idput($udom,%ids)>: store away a list of names and associated IDs
10740:
10741: =item *
10742: X<rolesinit()>
10743: B<rolesinit($udom,$username,$authhost)>: get user privileges
10744:
10745: =item *
10746: X<getsection()>
10747: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10748: course $cname, return section name/number or '' for "not in course"
10749: and '-1' for "no section"
10750:
10751: =item *
10752: X<userenvironment()>
10753: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10754: passed in @what from the requested user's environment, returns a hash
10755:
10756: =item *
10757: X<userlog_query()>
10758: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10759: activity.log file. %filters defines filters applied when parsing the
10760: log file. These can be start or end timestamps, or the type of action
10761: - log to look for Login or Logout events, check for Checkin or
10762: Checkout, role for role selection. The response is in the form
10763: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10764: escaped strings of the action recorded in the activity.log file.
10765:
10766: =back
10767:
10768: =head2 User Roles
10769:
10770: =over 4
10771:
10772: =item *
10773:
10774: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10775: F: full access
10776: U,I,K: authentication modes (cxx only)
10777: '': forbidden
10778: 1: user needs to choose course
10779: 2: browse allowed
10780: A: passphrase authentication needed
10781:
10782: =item *
10783:
10784: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10785: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10786: and course level
10787:
10788: =item *
10789:
10790: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10791: (rolesplain.tab); plain text explanation of a user role term.
10792: $type is Course (default) or Community.
10793: If $forcedefault evaluates to true, text returned will be default
10794: text for $type. Otherwise, if this is a course, the text returned
10795: will be a custom name for the role (if defined in the course's
10796: environment). If no custom name is defined the default is returned.
10797:
10798: =item *
10799:
10800: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10801: All arguments are optional. Returns a hash of a roles, either for
10802: co-author/assistant author roles for a user's Construction Space
10803: (default), or if $context is 'userroles', roles for the user himself,
10804: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10805: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10806: For each key, value is set to colon-separated start and end times for
10807: the role. If no username and domain are specified, will default to
10808: current user/domain. Types, roles, and roledoms are references to arrays
10809: of role statuses (active, future or previous), roles
10810: (e.g., cc,in, st etc.) and domains of the roles which can be used
10811: to restrict the list of roles reported. If no array ref is
10812: provided for types, will default to return only active roles.
10813:
10814: =back
10815:
10816: =head2 User Modification
10817:
10818: =over 4
10819:
10820: =item *
10821:
10822: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10823: user for the level given by URL. Optional start and end dates (leave empty
10824: string or zero for "no date")
10825:
10826: =item *
10827:
10828: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10829: change a users, password, possible return values are: ok,
10830: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10831: refused
10832:
10833: =item *
10834:
10835: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10836:
10837: =item *
10838:
10839: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
10840: $forceid,$desiredhome,$email,$inststatus,$candelete) :
10841:
10842: will update user information (firstname,middlename,lastname,generation,
10843: permanentemail), and if forceid is true, student/employee ID also.
10844: A user's institutional affiliation(s) can also be updated.
10845: User information fields will not be overwritten with empty entries
10846: unless the field is included in the $candelete array reference.
10847: This array is included when a single user is modified via "Manage Users",
10848: or when Autoupdate.pl is run by cron in a domain.
10849:
10850: =item *
10851:
10852: modifystudent
10853:
10854: modify a student's enrollment and identification information.
10855: The course id is resolved based on the current users environment.
10856: This means the envoking user must be a course coordinator or otherwise
10857: associated with a course.
10858:
10859: This call is essentially a wrapper for lonnet::modifyuser and
10860: lonnet::modify_student_enrollment
10861:
10862: Inputs:
10863:
10864: =over 4
10865:
10866: =item B<$udom> Student's loncapa domain
10867:
10868: =item B<$uname> Student's loncapa login name
10869:
10870: =item B<$uid> Student/Employee ID
10871:
10872: =item B<$umode> Student's authentication mode
10873:
10874: =item B<$upass> Student's password
10875:
10876: =item B<$first> Student's first name
10877:
10878: =item B<$middle> Student's middle name
10879:
10880: =item B<$last> Student's last name
10881:
10882: =item B<$gene> Student's generation
10883:
10884: =item B<$usec> Student's section in course
10885:
10886: =item B<$end> Unix time of the roles expiration
10887:
10888: =item B<$start> Unix time of the roles start date
10889:
10890: =item B<$forceid> If defined, allow $uid to be changed
10891:
10892: =item B<$desiredhome> server to use as home server for student
10893:
10894: =item B<$email> Student's permanent e-mail address
10895:
10896: =item B<$type> Type of enrollment (auto or manual)
10897:
10898: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10899:
10900: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10901:
10902: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10903:
10904: =item B<$context> role change context (shown in User Management Logs display in a course)
10905:
10906: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10907:
10908: =back
10909:
10910: =item *
10911:
10912: modify_student_enrollment
10913:
10914: Change a students enrollment status in a class. The environment variable
10915: 'role.request.course' must be defined for this function to proceed.
10916:
10917: Inputs:
10918:
10919: =over 4
10920:
10921: =item $udom, students domain
10922:
10923: =item $uname, students name
10924:
10925: =item $uid, students user id
10926:
10927: =item $first, students first name
10928:
10929: =item $middle
10930:
10931: =item $last
10932:
10933: =item $gene
10934:
10935: =item $usec
10936:
10937: =item $end
10938:
10939: =item $start
10940:
10941: =item $type
10942:
10943: =item $locktype
10944:
10945: =item $cid
10946:
10947: =item $selfenroll
10948:
10949: =item $context
10950:
10951: =back
10952:
10953:
10954: =item *
10955:
10956: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
10957: custom role; give a custom role to a user for the level given by URL. Specify
10958: name and domain of role author, and role name
10959:
10960: =item *
10961:
10962: revokerole($udom,$uname,$url,$role) : revoke a role for url
10963:
10964: =item *
10965:
10966: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
10967:
10968: =back
10969:
10970: =head2 Course Infomation
10971:
10972: =over 4
10973:
10974: =item *
10975:
10976: coursedescription($courseid) : returns a hash of information about the
10977: specified course id, including all environment settings for the
10978: course, the description of the course will be in the hash under the
10979: key 'description'
10980:
10981: =item *
10982:
10983: resdata($name,$domain,$type,@which) : request for current parameter
10984: setting for a specific $type, where $type is either 'course' or 'user',
10985: @what should be a list of parameters to ask about. This routine caches
10986: answers for 5 minutes.
10987:
10988: =item *
10989:
10990: get_courseresdata($courseid, $domain) : dump the entire course resource
10991: data base, returning a hash that is keyed by the resource name and has
10992: values that are the resource value. I believe that the timestamps and
10993: versions are also returned.
10994:
10995:
10996: =back
10997:
10998: =head2 Course Modification
10999:
11000: =over 4
11001:
11002: =item *
11003:
11004: writecoursepref($courseid,%prefs) : write preferences (environment
11005: database) for a course
11006:
11007: =item *
11008:
11009: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11010:
11011: =item *
11012:
11013: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11014:
11015: =back
11016:
11017: =head2 Resource Subroutines
11018:
11019: =over 4
11020:
11021: =item *
11022:
11023: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11024:
11025: =item *
11026:
11027: repcopy($filename) : subscribes to the requested file, and attempts to
11028: replicate from the owning library server, Might return
11029: 'unavailable', 'not_found', 'forbidden', 'ok', or
11030: 'bad_request', also attempts to grab the metadata for the
11031: resource. Expects the local filesystem pathname
11032: (/home/httpd/html/res/....)
11033:
11034: =back
11035:
11036: =head2 Resource Information
11037:
11038: =over 4
11039:
11040: =item *
11041:
11042: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
11043: a vairety of different possible values, $varname should be a request
11044: string, and the other parameters can be used to specify who and what
11045: one is asking about.
11046:
11047: Possible values for $varname are environment.lastname (or other item
11048: from the envirnment hash), user.name (or someother aspect about the
11049: user), resource.0.maxtries (or some other part and parameter of a
11050: resource)
11051:
11052: =item *
11053:
11054: directcondval($number) : get current value of a condition; reads from a state
11055: string
11056:
11057: =item *
11058:
11059: condval($condidx) : value of condition index based on state
11060:
11061: =item *
11062:
11063: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
11064: resource's metadata, $what should be either a specific key, or either
11065: 'keys' (to get a list of possible keys) or 'packages' to get a list of
11066: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
11067:
11068: this function automatically caches all requests
11069:
11070: =item *
11071:
11072: metadata_query($query,$custom,$customshow) : make a metadata query against the
11073: network of library servers; returns file handle of where SQL and regex results
11074: will be stored for query
11075:
11076: =item *
11077:
11078: symbread($filename) : return symbolic list entry (filename argument optional);
11079: returns the data handle
11080:
11081: =item *
11082:
11083: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
11084: a possible symb for the URL in $thisfn, and if is an encryypted
11085: resource that the user accessed using /enc/ returns a 1 on success, 0
11086: on failure, user must be in a course, as it assumes the existance of
11087: the course initial hash, and uses $env('request.course.id'}
11088:
11089:
11090: =item *
11091:
11092: symbclean($symb) : removes versions numbers from a symb, returns the
11093: cleaned symb
11094:
11095: =item *
11096:
11097: is_on_map($uri) : checks if the $uri is somewhere on the current
11098: course map, user must be in a course for it to work.
11099:
11100: =item *
11101:
11102: numval($salt) : return random seed value (addend for rndseed)
11103:
11104: =item *
11105:
11106: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
11107: a random seed, all arguments are optional, if they aren't sent it uses the
11108: environment to derive them. Note: if symb isn't sent and it can't get one
11109: from &symbread it will use the current time as its return value
11110:
11111: =item *
11112:
11113: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
11114: unfakeable, receipt
11115:
11116: =item *
11117:
11118: receipt() : API to ireceipt working off of env values; given out to users
11119:
11120: =item *
11121:
11122: countacc($url) : count the number of accesses to a given URL
11123:
11124: =item *
11125:
11126: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
11127:
11128: =item *
11129:
11130: checkin($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 $tcrsid)
11131:
11132: =item *
11133:
11134: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
11135:
11136: =item *
11137:
11138: devalidate($symb) : devalidate temporary spreadsheet calculations,
11139: forcing spreadsheet to reevaluate the resource scores next time.
11140:
11141: =back
11142:
11143: =head2 Storing/Retreiving Data
11144:
11145: =over 4
11146:
11147: =item *
11148:
11149: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11150: for this url; hashref needs to be given and should be a \%hashname; the
11151: remaining args aren't required and if they aren't passed or are '' they will
11152: be derived from the env
11153:
11154: =item *
11155:
11156: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11157: uses critical subroutine
11158:
11159: =item *
11160:
11161: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11162: all args are optional
11163:
11164: =item *
11165:
11166: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11167: dumps the complete (or key matching regexp) namespace into a hash
11168: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11169: normally &store()ed into
11170:
11171: $range should be either an integer '100' (give me the first 100
11172: matching records)
11173: or be two integers sperated by a - with no spaces
11174: '30-50' (give me the 30th through the 50th matching
11175: records)
11176:
11177:
11178: =item *
11179:
11180: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11181: replaces a &store() version of data with a replacement set of data
11182: for a particular resource in a namespace passed in the $storehash hash
11183: reference
11184:
11185: =item *
11186:
11187: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11188: works very similar to store/cstore, but all data is stored in a
11189: temporary location and can be reset using tmpreset, $storehash should
11190: be a hash reference, returns nothing on success
11191:
11192: =item *
11193:
11194: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11195: similar to restore, but all data is stored in a temporary location and
11196: can be reset using tmpreset. Returns a hash of values on success,
11197: error string otherwise.
11198:
11199: =item *
11200:
11201: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11202: deltes all keys for $symb form the temporary storage hash.
11203:
11204: =item *
11205:
11206: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11207: reference filled in from namesp ($udom and $uname are optional)
11208:
11209: =item *
11210:
11211: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11212: namesp ($udom and $uname are optional)
11213:
11214: =item *
11215:
11216: dump($namespace,$udom,$uname,$regexp,$range) :
11217: dumps the complete (or key matching regexp) namespace into a hash
11218: ($udom, $uname, $regexp, $range are optional)
11219:
11220: $range should be either an integer '100' (give me the first 100
11221: matching records)
11222: or be two integers sperated by a - with no spaces
11223: '30-50' (give me the 30th through the 50th matching
11224: records)
11225: =item *
11226:
11227: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11228: $store can be a scalar, an array reference, or if the amount to be
11229: incremented is > 1, a hash reference.
11230:
11231: ($udom and $uname are optional)
11232:
11233: =item *
11234:
11235: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11236: ($udom and $uname are optional)
11237:
11238: =item *
11239:
11240: cput($namespace,$storehash,$udom,$uname) : critical put
11241: ($udom and $uname are optional)
11242:
11243: =item *
11244:
11245: newput($namespace,$storehash,$udom,$uname) :
11246:
11247: Attempts to store the items in the $storehash, but only if they don't
11248: currently exist, if this succeeds you can be certain that you have
11249: successfully created a new key value pair in the $namespace db.
11250:
11251:
11252: Args:
11253: $namespace: name of database to store values to
11254: $storehash: hashref to store to the db
11255: $udom: (optional) domain of user containing the db
11256: $uname: (optional) name of user caontaining the db
11257:
11258: Returns:
11259: 'ok' -> succeeded in storing all keys of $storehash
11260: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11261: least <key> already existed in the db (other
11262: requested keys may also already exist)
11263: 'error: <msg>' -> unable to tie the DB or other error occurred
11264: 'con_lost' -> unable to contact request server
11265: 'refused' -> action was not allowed by remote machine
11266:
11267:
11268: =item *
11269:
11270: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11271: reference filled in from namesp (encrypts the return communication)
11272: ($udom and $uname are optional)
11273:
11274: =item *
11275:
11276: log($udom,$name,$home,$message) : write to permanent log for user; use
11277: critical subroutine
11278:
11279: =item *
11280:
11281: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11282: array reference filled in from namespace found in domain level on either
11283: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11284:
11285: =item *
11286:
11287: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11288: domain level either on specified domain server ($uhome) or primary domain
11289: server ($udom and $uhome are optional)
11290:
11291: =item *
11292:
11293: get_domain_defaults($target_domain) : returns hash with defaults for
11294: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11295: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11296: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11297: Values are retrieved from cache (if current), or from domain's configuration.db
11298: (if available), or lastly from values in lonTabs/dns_domain,tab,
11299: or lonTabs/domain.tab.
11300:
11301: %domdefaults = &get_auth_defaults($target_domain);
11302:
11303: =back
11304:
11305: =head2 Network Status Functions
11306:
11307: =over 4
11308:
11309: =item *
11310:
11311: dirlist($uri) : return directory list based on URI
11312:
11313: =item *
11314:
11315: spareserver() : find server with least workload from spare.tab
11316:
11317:
11318: =item *
11319:
11320: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11321: if there is no corresponding loncapa host.
11322:
11323: =back
11324:
11325:
11326: =head2 Apache Request
11327:
11328: =over 4
11329:
11330: =item *
11331:
11332: ssi($url,%hash) : server side include, does a complete request cycle on url to
11333: localhost, posts hash
11334:
11335: =back
11336:
11337: =head2 Data to String to Data
11338:
11339: =over 4
11340:
11341: =item *
11342:
11343: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11344: and '&' separators, supports elements that are arrayrefs and hashrefs
11345:
11346: =item *
11347:
11348: hashref2str($hashref) : convert a hashref into a string complete with
11349: escaping and '=' and '&' separators, supports elements that are
11350: arrayrefs and hashrefs
11351:
11352: =item *
11353:
11354: arrayref2str($arrayref) : convert an arrayref into a string complete
11355: with escaping and '&' separators, supports elements that are arrayrefs
11356: and hashrefs
11357:
11358: =item *
11359:
11360: str2hash($string) : convert string to hash using unescaping and
11361: splitting on '=' and '&', supports elements that are arrayrefs and
11362: hashrefs
11363:
11364: =item *
11365:
11366: str2array($string) : convert string to hash using unescaping and
11367: splitting on '&', supports elements that are arrayrefs and hashrefs
11368:
11369: =back
11370:
11371: =head2 Logging Routines
11372:
11373: =over 4
11374:
11375: These routines allow one to make log messages in the lonnet.log and
11376: lonnet.perm logfiles.
11377:
11378: =item *
11379:
11380: logtouch() : make sure the logfile, lonnet.log, exists
11381:
11382: =item *
11383:
11384: logthis() : append message to the normal lonnet.log file, it gets
11385: preiodically rolled over and deleted.
11386:
11387: =item *
11388:
11389: logperm() : append a permanent message to lonnet.perm.log, this log
11390: file never gets deleted by any automated portion of the system, only
11391: messages of critical importance should go in here.
11392:
11393: =back
11394:
11395: =head2 General File Helper Routines
11396:
11397: =over 4
11398:
11399: =item *
11400:
11401: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11402: (a) files in /uploaded
11403: (i) If a local copy of the file exists -
11404: compares modification date of local copy with last-modified date for
11405: definitive version stored on home server for course. If local copy is
11406: stale, requests a new version from the home server and stores it.
11407: If the original has been removed from the home server, then local copy
11408: is unlinked.
11409: (ii) If local copy does not exist -
11410: requests the file from the home server and stores it.
11411:
11412: If $caller is 'uploadrep':
11413: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11414: for request for files originally uploaded via DOCS.
11415: - returns 'ok' if fresh local copy now available, -1 otherwise.
11416:
11417: Otherwise:
11418: This indicates a call from the content generation phase of the request.
11419: - returns the entire contents of the file or -1.
11420:
11421: (b) files in /res
11422: - returns the entire contents of a file or -1;
11423: it properly subscribes to and replicates the file if neccessary.
11424:
11425:
11426: =item *
11427:
11428: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11429: reference
11430:
11431: returns either a stat() list of data about the file or an empty list
11432: if the file doesn't exist or couldn't find out about it (connection
11433: problems or user unknown)
11434:
11435: =item *
11436:
11437: filelocation($dir,$file) : returns file system location of a file
11438: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11439: directory that relative $file lookups are to looked in ($dir of /a/dir
11440: and a file of ../bob will become /a/bob)
11441:
11442: =item *
11443:
11444: hreflocation($dir,$file) : returns file system location or a URL; same as
11445: filelocation except for hrefs
11446:
11447: =item *
11448:
11449: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11450:
11451: =back
11452:
11453: =head2 Usererfile file routines (/uploaded*)
11454:
11455: =over 4
11456:
11457: =item *
11458:
11459: userfileupload(): main rotine for putting a file in a user or course's
11460: filespace, arguments are,
11461:
11462: formname - required - this is the name of the element in $env where the
11463: filename, and the contents of the file to create/modifed exist
11464: the filename is in $env{'form.'.$formname.'.filename'} and the
11465: contents of the file is located in $env{'form.'.$formname}
11466: context - if coursedoc, store the file in the course of the active role
11467: of the current user;
11468: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
11469: if 'canceloverwrite': delete file in tmp/overwrites directory
11470: subdir - required - subdirectory to put the file in under ../userfiles/
11471: if undefined, it will be placed in "unknown"
11472:
11473: (This routine calls clean_filename() to remove any dangerous
11474: characters from the filename, and then calls finuserfileupload() to
11475: complete the transaction)
11476:
11477: returns either the url of the uploaded file (/uploaded/....) if successful
11478: and /adm/notfound.html if unsuccessful
11479:
11480: =item *
11481:
11482: clean_filename(): routine for cleaing a filename up for storage in
11483: userfile space, argument is:
11484:
11485: filename - proposed filename
11486:
11487: returns: the new clean filename
11488:
11489: =item *
11490:
11491: finishuserfileupload(): routine that creates and sends the file to
11492: userspace, probably shouldn't be called directly
11493:
11494: docuname: username or courseid of destination for the file
11495: docudom: domain of user/course of destination for the file
11496: formname: same as for userfileupload()
11497: fname: filename (including subdirectories) for the file
11498: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
11499: allfiles: reference to hash used to store objects found by parser
11500: codebase: reference to hash used for codebases of java objects found by parser
11501: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
11502: thumbheight: height (pixels) of thumbnail to be created for uploaded image
11503: resizewidth: width to be used to resize image using resizeImage from ImageMagick
11504: resizeheight: height to be used to resize image using resizeImage from ImageMagick
11505: context: if 'overwrite', will move the uploaded file from its temporary location to
11506: userfiles to facilitate overwriting a previously uploaded file with same name.
11507: mimetype: reference to scalar to accommodate mime type determined
11508: from File::MMagic if $parser = parse.
11509:
11510: returns either the url of the uploaded file (/uploaded/....) if successful
11511: and /adm/notfound.html if unsuccessful (or an error message if context
11512: was 'overwrite').
11513:
11514:
11515: =item *
11516:
11517: renameuserfile(): renames an existing userfile to a new name
11518:
11519: Args:
11520: docuname: username or courseid of destination for the file
11521: docudom: domain of user/course of destination for the file
11522: old: current file name (including any subdirs under userfiles)
11523: new: desired file name (including any subdirs under userfiles)
11524:
11525: =item *
11526:
11527: mkdiruserfile(): creates a directory is a userfiles dir
11528:
11529: Args:
11530: docuname: username or courseid of destination for the file
11531: docudom: domain of user/course of destination for the file
11532: dir: dir to create (including any subdirs under userfiles)
11533:
11534: =item *
11535:
11536: removeuserfile(): removes a file that exists in userfiles
11537:
11538: Args:
11539: docuname: username or courseid of destination for the file
11540: docudom: domain of user/course of destination for the file
11541: fname: filname to delete (including any subdirs under userfiles)
11542:
11543: =item *
11544:
11545: removeuploadedurl(): convience function for removeuserfile()
11546:
11547: Args:
11548: url: a full /uploaded/... url to delete
11549:
11550: =item *
11551:
11552: get_portfile_permissions():
11553: Args:
11554: domain: domain of user or course contain the portfolio files
11555: user: name of user or num of course contain the portfolio files
11556: Returns:
11557: hashref of a dump of the proper file_permissions.db
11558:
11559:
11560: =item *
11561:
11562: get_access_controls():
11563:
11564: Args:
11565: current_permissions: the hash ref returned from get_portfile_permissions()
11566: group: (optional) the group you want the files associated with
11567: file: (optional) the file you want access info on
11568:
11569: Returns:
11570: a hash (keys are file names) of hashes containing
11571: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11572: values are XML containing access control settings (see below)
11573:
11574: Internal notes:
11575:
11576: access controls are stored in file_permissions.db as key=value pairs.
11577: key -> path to file/file_name\0uniqueID:scope_end_start
11578: where scope -> public,guest,course,group,domains or users.
11579: end -> UNIX time for end of access (0 -> no end date)
11580: start -> UNIX time for start of access
11581:
11582: value -> XML description of access control
11583: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11584: <start></start>
11585: <end></end>
11586:
11587: <password></password> for scope type = guest
11588:
11589: <domain></domain> for scope type = course or group
11590: <number></number>
11591: <roles id="">
11592: <role></role>
11593: <access></access>
11594: <section></section>
11595: <group></group>
11596: </roles>
11597:
11598: <dom></dom> for scope type = domains
11599:
11600: <users> for scope type = users
11601: <user>
11602: <uname></uname>
11603: <udom></udom>
11604: </user>
11605: </users>
11606: </scope>
11607:
11608: Access data is also aggregated for each file in an additional key=value pair:
11609: key -> path to file/file_name\0accesscontrol
11610: value -> reference to hash
11611: hash contains key = value pairs
11612: where key = uniqueID:scope_end_start
11613: value = UNIX time record was last updated
11614:
11615: Used to improve speed of look-ups of access controls for each file.
11616:
11617: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11618:
11619: modify_access_controls():
11620:
11621: Modifies access controls for a portfolio file
11622: Args
11623: 1. file name
11624: 2. reference to hash of required changes,
11625: 3. domain
11626: 4. username
11627: where domain,username are the domain of the portfolio owner
11628: (either a user or a course)
11629:
11630: Returns:
11631: 1. result of additions or updates ('ok' or 'error', with error message).
11632: 2. result of deletions ('ok' or 'error', with error message).
11633: 3. reference to hash of any new or updated access controls.
11634: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11635: key = integer (inbound ID)
11636: value = uniqueID
11637:
11638: =back
11639:
11640: =head2 HTTP Helper Routines
11641:
11642: =over 4
11643:
11644: =item *
11645:
11646: escape() : unpack non-word characters into CGI-compatible hex codes
11647:
11648: =item *
11649:
11650: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11651:
11652: =back
11653:
11654: =head1 PRIVATE SUBROUTINES
11655:
11656: =head2 Underlying communication routines (Shouldn't call)
11657:
11658: =over 4
11659:
11660: =item *
11661:
11662: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11663:
11664: =item *
11665:
11666: reply() : uses subreply to send a message to remote machine, logs all failures
11667:
11668: =item *
11669:
11670: critical() : passes a critical message to another server; if cannot
11671: get through then place message in connection buffer directory and
11672: returns con_delayed, if incapable of saving message, returns
11673: con_failed
11674:
11675: =item *
11676:
11677: reconlonc() : tries to reconnect lonc client processes.
11678:
11679: =back
11680:
11681: =head2 Resource Access Logging
11682:
11683: =over 4
11684:
11685: =item *
11686:
11687: flushcourselogs() : flush (save) buffer logs and access logs
11688:
11689: =item *
11690:
11691: courselog($what) : save message for course in hash
11692:
11693: =item *
11694:
11695: courseacclog($what) : save message for course using &courselog(). Perform
11696: special processing for specific resource types (problems, exams, quizzes, etc).
11697:
11698: =item *
11699:
11700: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11701: as a PerlChildExitHandler
11702:
11703: =back
11704:
11705: =head2 Other
11706:
11707: =over 4
11708:
11709: =item *
11710:
11711: symblist($mapname,%newhash) : update symbolic storage links
11712:
11713: =back
11714:
11715: =cut
11716:
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