1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1093 2010/11/10 14:44:19 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 $userloadpercent;
726: }
727:
728: # ------------------------------ Find server with least workload from spare.tab
729:
730: sub spareserver {
731: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
732: my $spare_server;
733: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
734: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
735: : $userloadpercent;
736: my ($uint_dom,$remotesessions);
737: if (($udom ne '') && (&domain($udom) ne '')) {
738: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
739: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
740: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
741: $remotesessions = $udomdefaults{'remotesessions'};
742: }
743: foreach my $try_server (@{ $spareid{'primary'} }) {
744: if ($uint_dom) {
745: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
746: $try_server));
747: }
748: ($spare_server, $lowest_load) =
749: &compare_server_load($try_server, $spare_server, $lowest_load);
750: }
751:
752: my $found_server = ($spare_server ne '' && $lowest_load < 100);
753:
754: if (!$found_server) {
755: foreach my $try_server (@{ $spareid{'default'} }) {
756: if ($uint_dom) {
757: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
758: $try_server));
759: }
760: ($spare_server, $lowest_load) =
761: &compare_server_load($try_server, $spare_server, $lowest_load);
762: }
763: }
764:
765: if (!$want_server_name) {
766: my $protocol = 'http';
767: if ($protocol{$spare_server} eq 'https') {
768: $protocol = $protocol{$spare_server};
769: }
770: if (defined($spare_server)) {
771: my $hostname = &hostname($spare_server);
772: if (defined($hostname)) {
773: $spare_server = $protocol.'://'.$hostname;
774: }
775: }
776: }
777: return $spare_server;
778: }
779:
780: sub compare_server_load {
781: my ($try_server, $spare_server, $lowest_load) = @_;
782:
783: my $loadans = &reply('load', $try_server);
784: my $userloadans = &reply('userload',$try_server);
785:
786: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
787: return; #didn't get a number from the server
788: }
789:
790: my $load;
791: if ($loadans =~ /\d/) {
792: if ($userloadans =~ /\d/) {
793: #both are numbers, pick the bigger one
794: $load = ($loadans > $userloadans) ? $loadans
795: : $userloadans;
796: } else {
797: $load = $loadans;
798: }
799: } else {
800: $load = $userloadans;
801: }
802:
803: if (($load =~ /\d/) && ($load < $lowest_load)) {
804: $spare_server = $try_server;
805: $lowest_load = $load;
806: }
807: return ($spare_server,$lowest_load);
808: }
809:
810: # --------------------------- ask offload servers if user already has a session
811: sub find_existing_session {
812: my ($udom,$uname) = @_;
813: foreach my $try_server (@{ $spareid{'primary'} },
814: @{ $spareid{'default'} }) {
815: return $try_server if (&has_user_session($try_server, $udom, $uname));
816: }
817: return;
818: }
819:
820: # -------------------------------- ask if server already has a session for user
821: sub has_user_session {
822: my ($lonid,$udom,$uname) = @_;
823: my $result = &reply(join(':','userhassession',
824: map {&escape($_)} ($udom,$uname)),$lonid);
825: return 1 if ($result eq 'ok');
826:
827: return 0;
828: }
829:
830: # --------- determine least loaded server in a user's domain which allows login
831:
832: sub choose_server {
833: my ($udom) = @_;
834: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
835: my %servers = &get_servers($udom);
836: my $lowest_load = 30000;
837: my ($login_host,$hostname);
838: foreach my $lonhost (keys(%servers)) {
839: my $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
840: if ($loginvia eq '') {
841: ($login_host, $lowest_load) =
842: &compare_server_load($lonhost, $login_host, $lowest_load);
843: }
844: }
845: if ($login_host ne '') {
846: $hostname = $servers{$login_host};
847: }
848: return ($login_host,$hostname);
849: }
850:
851: # --------------------------------------------- Try to change a user's password
852:
853: sub changepass {
854: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
855: $currentpass = &escape($currentpass);
856: $newpass = &escape($newpass);
857: my $lonhost = $perlvar{'lonHostID'};
858: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
859: $server);
860: if (! $answer) {
861: &logthis("No reply on password change request to $server ".
862: "by $uname in domain $udom.");
863: } elsif ($answer =~ "^ok") {
864: &logthis("$uname in $udom successfully changed their password ".
865: "on $server.");
866: } elsif ($answer =~ "^pwchange_failure") {
867: &logthis("$uname in $udom was unable to change their password ".
868: "on $server. The action was blocked by either lcpasswd ".
869: "or pwchange");
870: } elsif ($answer =~ "^non_authorized") {
871: &logthis("$uname in $udom did not get their password correct when ".
872: "attempting to change it on $server.");
873: } elsif ($answer =~ "^auth_mode_error") {
874: &logthis("$uname in $udom attempted to change their password despite ".
875: "not being locally or internally authenticated on $server.");
876: } elsif ($answer =~ "^unknown_user") {
877: &logthis("$uname in $udom attempted to change their password ".
878: "on $server but were unable to because $server is not ".
879: "their home server.");
880: } elsif ($answer =~ "^refused") {
881: &logthis("$server refused to change $uname in $udom password because ".
882: "it was sent an unencrypted request to change the password.");
883: } elsif ($answer =~ "invalid_client") {
884: &logthis("$server refused to change $uname in $udom password because ".
885: "it was a reset by e-mail originating from an invalid server.");
886: }
887: return $answer;
888: }
889:
890: # ----------------------- Try to determine user's current authentication scheme
891:
892: sub queryauthenticate {
893: my ($uname,$udom)=@_;
894: my $uhome=&homeserver($uname,$udom);
895: if (!$uhome) {
896: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
897: return 'no_host';
898: }
899: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
900: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
901: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
902: }
903: return $answer;
904: }
905:
906: # --------- Try to authenticate user from domain's lib servers (first this one)
907:
908: sub authenticate {
909: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
910: $upass=&escape($upass);
911: $uname= &LONCAPA::clean_username($uname);
912: my $uhome=&homeserver($uname,$udom,1);
913: my $newhome;
914: if ((!$uhome) || ($uhome eq 'no_host')) {
915: # Maybe the machine was offline and only re-appeared again recently?
916: &reconlonc();
917: # One more
918: $uhome=&homeserver($uname,$udom,1);
919: if (($uhome eq 'no_host') && $checkdefauth) {
920: if (defined(&domain($udom,'primary'))) {
921: $newhome=&domain($udom,'primary');
922: }
923: if ($newhome ne '') {
924: $uhome = $newhome;
925: }
926: }
927: if ((!$uhome) || ($uhome eq 'no_host')) {
928: &logthis("User $uname at $udom is unknown in authenticate");
929: return 'no_host';
930: }
931: }
932: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
933: if ($answer eq 'authorized') {
934: if ($newhome) {
935: &logthis("User $uname at $udom authorized by $uhome, but needs account");
936: return 'no_account_on_host';
937: } else {
938: &logthis("User $uname at $udom authorized by $uhome");
939: return $uhome;
940: }
941: }
942: if ($answer eq 'non_authorized') {
943: &logthis("User $uname at $udom rejected by $uhome");
944: return 'no_host';
945: }
946: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
947: return 'no_host';
948: }
949:
950: sub can_host_session {
951: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
952: my $canhost = 1;
953: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
954: if (ref($remotesessions) eq 'HASH') {
955: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
956: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
957: $canhost = 0;
958: } else {
959: $canhost = 1;
960: }
961: }
962: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
963: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
964: $canhost = 1;
965: } else {
966: $canhost = 0;
967: }
968: }
969: if ($canhost) {
970: if ($remotesessions->{'version'} ne '') {
971: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
972: if ($reqmajor ne '' && $reqminor ne '') {
973: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
974: my $major = $1;
975: my $minor = $2;
976: if (($major < $reqmajor ) ||
977: (($major == $reqmajor) && ($minor < $reqminor))) {
978: $canhost = 0;
979: }
980: } else {
981: $canhost = 0;
982: }
983: }
984: }
985: }
986: }
987: if ($canhost) {
988: if (ref($hostedsessions) eq 'HASH') {
989: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
990: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'excludedomain'}})) {
991: $canhost = 0;
992: } else {
993: $canhost = 1;
994: }
995: }
996: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
997: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'includedomain'}})) {
998: $canhost = 1;
999: } else {
1000: $canhost = 0;
1001: }
1002: }
1003: }
1004: }
1005: return $canhost;
1006: }
1007:
1008: sub spare_can_host {
1009: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1010: my $canhost=1;
1011: my @intdoms;
1012: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1013: if (ref($internet_names) eq 'ARRAY') {
1014: @intdoms = @{$internet_names};
1015: }
1016: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1017: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1018: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1019: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1020: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1021: $canhost = &can_host_session($udom,$try_server,$remoterev,
1022: $remotesessions,
1023: $defdomdefaults{'hostedsessions'});
1024: }
1025: return $canhost;
1026: }
1027:
1028: # ---------------------- Find the homebase for a user from domain's lib servers
1029:
1030: my %homecache;
1031: sub homeserver {
1032: my ($uname,$udom,$ignoreBadCache)=@_;
1033: my $index="$uname:$udom";
1034:
1035: if (exists($homecache{$index})) { return $homecache{$index}; }
1036:
1037: my %servers = &get_servers($udom,'library');
1038: foreach my $tryserver (keys(%servers)) {
1039: next if ($ignoreBadCache ne 'true' &&
1040: exists($badServerCache{$tryserver}));
1041:
1042: my $answer=reply("home:$udom:$uname",$tryserver);
1043: if ($answer eq 'found') {
1044: delete($badServerCache{$tryserver});
1045: return $homecache{$index}=$tryserver;
1046: } elsif ($answer eq 'no_host') {
1047: $badServerCache{$tryserver}=1;
1048: }
1049: }
1050: return 'no_host';
1051: }
1052:
1053: # ------------------------------------- Find the usernames behind a list of IDs
1054:
1055: sub idget {
1056: my ($udom,@ids)=@_;
1057: my %returnhash=();
1058:
1059: my %servers = &get_servers($udom,'library');
1060: foreach my $tryserver (keys(%servers)) {
1061: my $idlist=join('&',@ids);
1062: $idlist=~tr/A-Z/a-z/;
1063: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1064: my @answer=();
1065: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1066: @answer=split(/\&/,$reply);
1067: } ;
1068: my $i;
1069: for ($i=0;$i<=$#ids;$i++) {
1070: if ($answer[$i]) {
1071: $returnhash{$ids[$i]}=$answer[$i];
1072: }
1073: }
1074: }
1075: return %returnhash;
1076: }
1077:
1078: # ------------------------------------- Find the IDs behind a list of usernames
1079:
1080: sub idrget {
1081: my ($udom,@unames)=@_;
1082: my %returnhash=();
1083: foreach my $uname (@unames) {
1084: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1085: }
1086: return %returnhash;
1087: }
1088:
1089: # ------------------------------- Store away a list of names and associated IDs
1090:
1091: sub idput {
1092: my ($udom,%ids)=@_;
1093: my %servers=();
1094: foreach my $uname (keys(%ids)) {
1095: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1096: my $uhom=&homeserver($uname,$udom);
1097: if ($uhom ne 'no_host') {
1098: my $id=&escape($ids{$uname});
1099: $id=~tr/A-Z/a-z/;
1100: my $esc_unam=&escape($uname);
1101: if ($servers{$uhom}) {
1102: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1103: } else {
1104: $servers{$uhom}=$id.'='.$esc_unam;
1105: }
1106: }
1107: }
1108: foreach my $server (keys(%servers)) {
1109: &critical('idput:'.$udom.':'.$servers{$server},$server);
1110: }
1111: }
1112:
1113: # ------------------------------dump from db file owned by domainconfig user
1114: sub dump_dom {
1115: my ($namespace,$udom,$regexp,$range)=@_;
1116: if (!$udom) {
1117: $udom=$env{'user.domain'};
1118: }
1119: my %returnhash;
1120: if ($udom) {
1121: my $uname = &get_domainconfiguser($udom);
1122: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1123: }
1124: return %returnhash;
1125: }
1126:
1127: # ------------------------------------------ get items from domain db files
1128:
1129: sub get_dom {
1130: my ($namespace,$storearr,$udom,$uhome)=@_;
1131: my $items='';
1132: foreach my $item (@$storearr) {
1133: $items.=&escape($item).'&';
1134: }
1135: $items=~s/\&$//;
1136: if (!$udom) {
1137: $udom=$env{'user.domain'};
1138: if (defined(&domain($udom,'primary'))) {
1139: $uhome=&domain($udom,'primary');
1140: } else {
1141: undef($uhome);
1142: }
1143: } else {
1144: if (!$uhome) {
1145: if (defined(&domain($udom,'primary'))) {
1146: $uhome=&domain($udom,'primary');
1147: }
1148: }
1149: }
1150: if ($udom && $uhome && ($uhome ne 'no_host')) {
1151: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1152: my %returnhash;
1153: if ($rep eq '' || $rep =~ /^error: 2 /) {
1154: return %returnhash;
1155: }
1156: my @pairs=split(/\&/,$rep);
1157: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1158: return @pairs;
1159: }
1160: my $i=0;
1161: foreach my $item (@$storearr) {
1162: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1163: $i++;
1164: }
1165: return %returnhash;
1166: } else {
1167: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1168: }
1169: }
1170:
1171: # -------------------------------------------- put items in domain db files
1172:
1173: sub put_dom {
1174: my ($namespace,$storehash,$udom,$uhome)=@_;
1175: if (!$udom) {
1176: $udom=$env{'user.domain'};
1177: if (defined(&domain($udom,'primary'))) {
1178: $uhome=&domain($udom,'primary');
1179: } else {
1180: undef($uhome);
1181: }
1182: } else {
1183: if (!$uhome) {
1184: if (defined(&domain($udom,'primary'))) {
1185: $uhome=&domain($udom,'primary');
1186: }
1187: }
1188: }
1189: if ($udom && $uhome && ($uhome ne 'no_host')) {
1190: my $items='';
1191: foreach my $item (keys(%$storehash)) {
1192: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1193: }
1194: $items=~s/\&$//;
1195: return &reply("putdom:$udom:$namespace:$items",$uhome);
1196: } else {
1197: &logthis("put_dom failed - no homeserver and/or domain");
1198: }
1199: }
1200:
1201: # --------------------- newput for items in db file owned by domainconfig user
1202: sub newput_dom {
1203: my ($namespace,$storehash,$udom) = @_;
1204: my $result;
1205: if (!$udom) {
1206: $udom=$env{'user.domain'};
1207: }
1208: if ($udom) {
1209: my $uname = &get_domainconfiguser($udom);
1210: $result = &newput($namespace,$storehash,$udom,$uname);
1211: }
1212: return $result;
1213: }
1214:
1215: # --------------------- delete for items in db file owned by domainconfig user
1216: sub del_dom {
1217: my ($namespace,$storearr,$udom)=@_;
1218: if (ref($storearr) eq 'ARRAY') {
1219: if (!$udom) {
1220: $udom=$env{'user.domain'};
1221: }
1222: if ($udom) {
1223: my $uname = &get_domainconfiguser($udom);
1224: return &del($namespace,$storearr,$udom,$uname);
1225: }
1226: }
1227: }
1228:
1229: # ----------------------------------construct domainconfig user for a domain
1230: sub get_domainconfiguser {
1231: my ($udom) = @_;
1232: return $udom.'-domainconfig';
1233: }
1234:
1235: sub retrieve_inst_usertypes {
1236: my ($udom) = @_;
1237: my (%returnhash,@order);
1238: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1239: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1240: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1241: %returnhash = %{$domdefs{'inststatustypes'}};
1242: @order = @{$domdefs{'inststatusorder'}};
1243: } else {
1244: if (defined(&domain($udom,'primary'))) {
1245: my $uhome=&domain($udom,'primary');
1246: my $rep=&reply("inst_usertypes:$udom",$uhome);
1247: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1248: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1249: return (\%returnhash,\@order);
1250: }
1251: my ($hashitems,$orderitems) = split(/:/,$rep);
1252: my @pairs=split(/\&/,$hashitems);
1253: foreach my $item (@pairs) {
1254: my ($key,$value)=split(/=/,$item,2);
1255: $key = &unescape($key);
1256: next if ($key =~ /^error: 2 /);
1257: $returnhash{$key}=&thaw_unescape($value);
1258: }
1259: my @esc_order = split(/\&/,$orderitems);
1260: foreach my $item (@esc_order) {
1261: push(@order,&unescape($item));
1262: }
1263: } else {
1264: &logthis("get_dom failed - no primary domain server for $udom");
1265: }
1266: }
1267: return (\%returnhash,\@order);
1268: }
1269:
1270: sub is_domainimage {
1271: my ($url) = @_;
1272: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1273: if (&domain($1) ne '') {
1274: return '1';
1275: }
1276: }
1277: return;
1278: }
1279:
1280: sub inst_directory_query {
1281: my ($srch) = @_;
1282: my $udom = $srch->{'srchdomain'};
1283: my %results;
1284: my $homeserver = &domain($udom,'primary');
1285: my $outcome;
1286: if ($homeserver ne '') {
1287: my $queryid=&reply("querysend:instdirsearch:".
1288: &escape($srch->{'srchby'}).':'.
1289: &escape($srch->{'srchterm'}).':'.
1290: &escape($srch->{'srchtype'}),$homeserver);
1291: my $host=&hostname($homeserver);
1292: if ($queryid !~/^\Q$host\E\_/) {
1293: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1294: return;
1295: }
1296: my $response = &get_query_reply($queryid);
1297: my $maxtries = 5;
1298: my $tries = 1;
1299: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1300: $response = &get_query_reply($queryid);
1301: $tries ++;
1302: }
1303:
1304: if (!&error($response) && $response ne 'refused') {
1305: if ($response eq 'unavailable') {
1306: $outcome = $response;
1307: } else {
1308: $outcome = 'ok';
1309: my @matches = split(/\n/,$response);
1310: foreach my $match (@matches) {
1311: my ($key,$value) = split(/=/,$match);
1312: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1313: }
1314: }
1315: }
1316: }
1317: return ($outcome,%results);
1318: }
1319:
1320: sub usersearch {
1321: my ($srch) = @_;
1322: my $dom = $srch->{'srchdomain'};
1323: my %results;
1324: my %libserv = &all_library();
1325: my $query = 'usersearch';
1326: foreach my $tryserver (keys(%libserv)) {
1327: if (&host_domain($tryserver) eq $dom) {
1328: my $host=&hostname($tryserver);
1329: my $queryid=
1330: &reply("querysend:".&escape($query).':'.
1331: &escape($srch->{'srchby'}).':'.
1332: &escape($srch->{'srchtype'}).':'.
1333: &escape($srch->{'srchterm'}),$tryserver);
1334: if ($queryid !~/^\Q$host\E\_/) {
1335: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1336: next;
1337: }
1338: my $reply = &get_query_reply($queryid);
1339: my $maxtries = 1;
1340: my $tries = 1;
1341: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1342: $reply = &get_query_reply($queryid);
1343: $tries ++;
1344: }
1345: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1346: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1347: } else {
1348: my @matches;
1349: if ($reply =~ /\n/) {
1350: @matches = split(/\n/,$reply);
1351: } else {
1352: @matches = split(/\&/,$reply);
1353: }
1354: foreach my $match (@matches) {
1355: my ($uname,$udom,%userhash);
1356: foreach my $entry (split(/:/,$match)) {
1357: my ($key,$value) =
1358: map {&unescape($_);} split(/=/,$entry);
1359: $userhash{$key} = $value;
1360: if ($key eq 'username') {
1361: $uname = $value;
1362: } elsif ($key eq 'domain') {
1363: $udom = $value;
1364: }
1365: }
1366: $results{$uname.':'.$udom} = \%userhash;
1367: }
1368: }
1369: }
1370: }
1371: return %results;
1372: }
1373:
1374: sub get_instuser {
1375: my ($udom,$uname,$id) = @_;
1376: my $homeserver = &domain($udom,'primary');
1377: my ($outcome,%results);
1378: if ($homeserver ne '') {
1379: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1380: &escape($id).':'.&escape($udom),$homeserver);
1381: my $host=&hostname($homeserver);
1382: if ($queryid !~/^\Q$host\E\_/) {
1383: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1384: return;
1385: }
1386: my $response = &get_query_reply($queryid);
1387: my $maxtries = 5;
1388: my $tries = 1;
1389: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1390: $response = &get_query_reply($queryid);
1391: $tries ++;
1392: }
1393: if (!&error($response) && $response ne 'refused') {
1394: if ($response eq 'unavailable') {
1395: $outcome = $response;
1396: } else {
1397: $outcome = 'ok';
1398: my @matches = split(/\n/,$response);
1399: foreach my $match (@matches) {
1400: my ($key,$value) = split(/=/,$match);
1401: $results{&unescape($key)} = &thaw_unescape($value);
1402: }
1403: }
1404: }
1405: }
1406: my %userinfo;
1407: if (ref($results{$uname}) eq 'HASH') {
1408: %userinfo = %{$results{$uname}};
1409: }
1410: return ($outcome,%userinfo);
1411: }
1412:
1413: sub inst_rulecheck {
1414: my ($udom,$uname,$id,$item,$rules) = @_;
1415: my %returnhash;
1416: if ($udom ne '') {
1417: if (ref($rules) eq 'ARRAY') {
1418: @{$rules} = map {&escape($_);} (@{$rules});
1419: my $rulestr = join(':',@{$rules});
1420: my $homeserver=&domain($udom,'primary');
1421: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1422: my $response;
1423: if ($item eq 'username') {
1424: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1425: ':'.&escape($uname).':'.$rulestr,
1426: $homeserver));
1427: } elsif ($item eq 'id') {
1428: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1429: ':'.&escape($id).':'.$rulestr,
1430: $homeserver));
1431: } elsif ($item eq 'selfcreate') {
1432: $response=&unescape(&reply('instselfcreatecheck:'.
1433: &escape($udom).':'.&escape($uname).
1434: ':'.$rulestr,$homeserver));
1435: }
1436: if ($response ne 'refused') {
1437: my @pairs=split(/\&/,$response);
1438: foreach my $item (@pairs) {
1439: my ($key,$value)=split(/=/,$item,2);
1440: $key = &unescape($key);
1441: next if ($key =~ /^error: 2 /);
1442: $returnhash{$key}=&thaw_unescape($value);
1443: }
1444: }
1445: }
1446: }
1447: }
1448: return %returnhash;
1449: }
1450:
1451: sub inst_userrules {
1452: my ($udom,$check) = @_;
1453: my (%ruleshash,@ruleorder);
1454: if ($udom ne '') {
1455: my $homeserver=&domain($udom,'primary');
1456: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1457: my $response;
1458: if ($check eq 'id') {
1459: $response=&reply('instidrules:'.&escape($udom),
1460: $homeserver);
1461: } elsif ($check eq 'email') {
1462: $response=&reply('instemailrules:'.&escape($udom),
1463: $homeserver);
1464: } else {
1465: $response=&reply('instuserrules:'.&escape($udom),
1466: $homeserver);
1467: }
1468: if (($response ne 'refused') && ($response ne 'error') &&
1469: ($response ne 'unknown_cmd') &&
1470: ($response ne 'no_such_host')) {
1471: my ($hashitems,$orderitems) = split(/:/,$response);
1472: my @pairs=split(/\&/,$hashitems);
1473: foreach my $item (@pairs) {
1474: my ($key,$value)=split(/=/,$item,2);
1475: $key = &unescape($key);
1476: next if ($key =~ /^error: 2 /);
1477: $ruleshash{$key}=&thaw_unescape($value);
1478: }
1479: my @esc_order = split(/\&/,$orderitems);
1480: foreach my $item (@esc_order) {
1481: push(@ruleorder,&unescape($item));
1482: }
1483: }
1484: }
1485: }
1486: return (\%ruleshash,\@ruleorder);
1487: }
1488:
1489: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1490:
1491: sub get_domain_defaults {
1492: my ($domain) = @_;
1493: my $cachetime = 60*60*24;
1494: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1495: if (defined($cached)) {
1496: if (ref($result) eq 'HASH') {
1497: return %{$result};
1498: }
1499: }
1500: my %domdefaults;
1501: my %domconfig =
1502: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1503: 'requestcourses','inststatus',
1504: 'coursedefaults','usersessions'],$domain);
1505: if (ref($domconfig{'defaults'}) eq 'HASH') {
1506: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1507: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1508: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1509: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1510: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1511: } else {
1512: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1513: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1514: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1515: }
1516: if (ref($domconfig{'quotas'}) eq 'HASH') {
1517: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1518: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1519: } else {
1520: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1521: }
1522: my @usertools = ('aboutme','blog','portfolio');
1523: foreach my $item (@usertools) {
1524: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1525: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1526: }
1527: }
1528: }
1529: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1530: foreach my $item ('official','unofficial','community') {
1531: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1532: }
1533: }
1534: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1535: foreach my $item ('inststatustypes','inststatusorder') {
1536: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1537: }
1538: }
1539: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1540: foreach my $item ('canuse_pdfforms') {
1541: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1542: }
1543: }
1544: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1545: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1546: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1547: }
1548: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1549: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1550: }
1551: }
1552: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1553: $cachetime);
1554: return %domdefaults;
1555: }
1556:
1557: # --------------------------------------------------- Assign a key to a student
1558:
1559: sub assign_access_key {
1560: #
1561: # a valid key looks like uname:udom#comments
1562: # comments are being appended
1563: #
1564: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1565: $kdom=
1566: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1567: $knum=
1568: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1569: $cdom=
1570: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1571: $cnum=
1572: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1573: $udom=$env{'user.name'} unless (defined($udom));
1574: $uname=$env{'user.domain'} unless (defined($uname));
1575: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1576: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1577: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1578: # assigned to this person
1579: # - this should not happen,
1580: # unless something went wrong
1581: # the first time around
1582: # ready to assign
1583: $logentry=$1.'; '.$logentry;
1584: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1585: $kdom,$knum) eq 'ok') {
1586: # key now belongs to user
1587: my $envkey='key.'.$cdom.'_'.$cnum;
1588: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1589: &appenv({'environment.'.$envkey => $ckey});
1590: return 'ok';
1591: } else {
1592: return
1593: 'error: Count not permanently assign key, will need to be re-entered later.';
1594: }
1595: } else {
1596: return 'error: Could not assign key, try again later.';
1597: }
1598: } elsif (!$existing{$ckey}) {
1599: # the key does not exist
1600: return 'error: The key does not exist';
1601: } else {
1602: # the key is somebody else's
1603: return 'error: The key is already in use';
1604: }
1605: }
1606:
1607: # ------------------------------------------ put an additional comment on a key
1608:
1609: sub comment_access_key {
1610: #
1611: # a valid key looks like uname:udom#comments
1612: # comments are being appended
1613: #
1614: my ($ckey,$cdom,$cnum,$logentry)=@_;
1615: $cdom=
1616: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1617: $cnum=
1618: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1619: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1620: if ($existing{$ckey}) {
1621: $existing{$ckey}.='; '.$logentry;
1622: # ready to assign
1623: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1624: $cdom,$cnum) eq 'ok') {
1625: return 'ok';
1626: } else {
1627: return 'error: Count not store comment.';
1628: }
1629: } else {
1630: # the key does not exist
1631: return 'error: The key does not exist';
1632: }
1633: }
1634:
1635: # ------------------------------------------------------ Generate a set of keys
1636:
1637: sub generate_access_keys {
1638: my ($number,$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: unless (&allowed('mky',$cdom)) { return 0; }
1644: unless (($cdom) && ($cnum)) { return 0; }
1645: if ($number>10000) { return 0; }
1646: sleep(2); # make sure don't get same seed twice
1647: srand(time()^($$+($$<<15))); # from "Programming Perl"
1648: my $total=0;
1649: for (my $i=1;$i<=$number;$i++) {
1650: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1651: sprintf("%lx",int(100000*rand)).'-'.
1652: sprintf("%lx",int(100000*rand));
1653: $newkey=~s/1/g/g; # folks mix up 1 and l
1654: $newkey=~s/0/h/g; # and also 0 and O
1655: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1656: if ($existing{$newkey}) {
1657: $i--;
1658: } else {
1659: if (&put('accesskeys',
1660: { $newkey => '# generated '.localtime().
1661: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1662: '; '.$logentry },
1663: $cdom,$cnum) eq 'ok') {
1664: $total++;
1665: }
1666: }
1667: }
1668: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1669: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1670: return $total;
1671: }
1672:
1673: # ------------------------------------------------------- Validate an accesskey
1674:
1675: sub validate_access_key {
1676: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1677: $cdom=
1678: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1679: $cnum=
1680: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1681: $udom=$env{'user.domain'} unless (defined($udom));
1682: $uname=$env{'user.name'} unless (defined($uname));
1683: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1684: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1685: }
1686:
1687: # ------------------------------------- Find the section of student in a course
1688: sub devalidate_getsection_cache {
1689: my ($udom,$unam,$courseid)=@_;
1690: my $hashid="$udom:$unam:$courseid";
1691: &devalidate_cache_new('getsection',$hashid);
1692: }
1693:
1694: sub courseid_to_courseurl {
1695: my ($courseid) = @_;
1696: #already url style courseid
1697: return $courseid if ($courseid =~ m{^/});
1698:
1699: if (exists($env{'course.'.$courseid.'.num'})) {
1700: my $cnum = $env{'course.'.$courseid.'.num'};
1701: my $cdom = $env{'course.'.$courseid.'.domain'};
1702: return "/$cdom/$cnum";
1703: }
1704:
1705: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1706: if (exists($courseinfo{'num'})) {
1707: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1708: }
1709:
1710: return undef;
1711: }
1712:
1713: sub getsection {
1714: my ($udom,$unam,$courseid)=@_;
1715: my $cachetime=1800;
1716:
1717: my $hashid="$udom:$unam:$courseid";
1718: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1719: if (defined($cached)) { return $result; }
1720:
1721: my %Pending;
1722: my %Expired;
1723: #
1724: # Each role can either have not started yet (pending), be active,
1725: # or have expired.
1726: #
1727: # If there is an active role, we are done.
1728: #
1729: # If there is more than one role which has not started yet,
1730: # choose the one which will start sooner
1731: # If there is one role which has not started yet, return it.
1732: #
1733: # If there is more than one expired role, choose the one which ended last.
1734: # If there is a role which has expired, return it.
1735: #
1736: $courseid = &courseid_to_courseurl($courseid);
1737: my $extra = &freeze_escape({'skipcheck' => 1});
1738: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
1739: foreach my $key (keys(%roleshash)) {
1740: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1741: my $section=$1;
1742: if ($key eq $courseid.'_st') { $section=''; }
1743: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1744: my $now=time;
1745: if (defined($end) && $end && ($now > $end)) {
1746: $Expired{$end}=$section;
1747: next;
1748: }
1749: if (defined($start) && $start && ($now < $start)) {
1750: $Pending{$start}=$section;
1751: next;
1752: }
1753: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1754: }
1755: #
1756: # Presumedly there will be few matching roles from the above
1757: # loop and the sorting time will be negligible.
1758: if (scalar(keys(%Pending))) {
1759: my ($time) = sort {$a <=> $b} keys(%Pending);
1760: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1761: }
1762: if (scalar(keys(%Expired))) {
1763: my @sorted = sort {$a <=> $b} keys(%Expired);
1764: my $time = pop(@sorted);
1765: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1766: }
1767: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1768: }
1769:
1770: sub save_cache {
1771: &purge_remembered();
1772: #&Apache::loncommon::validate_page();
1773: undef(%env);
1774: undef($env_loaded);
1775: }
1776:
1777: my $to_remember=-1;
1778: my %remembered;
1779: my %accessed;
1780: my $kicks=0;
1781: my $hits=0;
1782: sub make_key {
1783: my ($name,$id) = @_;
1784: if (length($id) > 65
1785: && length(&escape($id)) > 200) {
1786: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1787: }
1788: return &escape($name.':'.$id);
1789: }
1790:
1791: sub devalidate_cache_new {
1792: my ($name,$id,$debug) = @_;
1793: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1794: $id=&make_key($name,$id);
1795: $memcache->delete($id);
1796: delete($remembered{$id});
1797: delete($accessed{$id});
1798: }
1799:
1800: sub is_cached_new {
1801: my ($name,$id,$debug) = @_;
1802: $id=&make_key($name,$id);
1803: if (exists($remembered{$id})) {
1804: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1805: $accessed{$id}=[&gettimeofday()];
1806: $hits++;
1807: return ($remembered{$id},1);
1808: }
1809: my $value = $memcache->get($id);
1810: if (!(defined($value))) {
1811: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1812: return (undef,undef);
1813: }
1814: if ($value eq '__undef__') {
1815: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1816: $value=undef;
1817: }
1818: &make_room($id,$value,$debug);
1819: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1820: return ($value,1);
1821: }
1822:
1823: sub do_cache_new {
1824: my ($name,$id,$value,$time,$debug) = @_;
1825: $id=&make_key($name,$id);
1826: my $setvalue=$value;
1827: if (!defined($setvalue)) {
1828: $setvalue='__undef__';
1829: }
1830: if (!defined($time) ) {
1831: $time=600;
1832: }
1833: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1834: my $result = $memcache->set($id,$setvalue,$time);
1835: if (! $result) {
1836: &logthis("caching of id -> $id failed");
1837: $memcache->disconnect_all();
1838: }
1839: # need to make a copy of $value
1840: &make_room($id,$value,$debug);
1841: return $value;
1842: }
1843:
1844: sub make_room {
1845: my ($id,$value,$debug)=@_;
1846:
1847: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1848: : $value;
1849: if ($to_remember<0) { return; }
1850: $accessed{$id}=[&gettimeofday()];
1851: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1852: my $to_kick;
1853: my $max_time=0;
1854: foreach my $other (keys(%accessed)) {
1855: if (&tv_interval($accessed{$other}) > $max_time) {
1856: $to_kick=$other;
1857: $max_time=&tv_interval($accessed{$other});
1858: }
1859: }
1860: delete($remembered{$to_kick});
1861: delete($accessed{$to_kick});
1862: $kicks++;
1863: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1864: return;
1865: }
1866:
1867: sub purge_remembered {
1868: #&logthis("Tossing ".scalar(keys(%remembered)));
1869: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1870: undef(%remembered);
1871: undef(%accessed);
1872: }
1873: # ------------------------------------- Read an entry from a user's environment
1874:
1875: sub userenvironment {
1876: my ($udom,$unam,@what)=@_;
1877: my $items;
1878: foreach my $item (@what) {
1879: $items.=&escape($item).'&';
1880: }
1881: $items=~s/\&$//;
1882: my %returnhash=();
1883: my $uhome = &homeserver($unam,$udom);
1884: unless ($uhome eq 'no_host') {
1885: my @answer=split(/\&/,
1886: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1887: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
1888: return %returnhash;
1889: }
1890: my $i;
1891: for ($i=0;$i<=$#what;$i++) {
1892: $returnhash{$what[$i]}=&unescape($answer[$i]);
1893: }
1894: }
1895: return %returnhash;
1896: }
1897:
1898: # ---------------------------------------------------------- Get a studentphoto
1899: sub studentphoto {
1900: my ($udom,$unam,$ext) = @_;
1901: my $home=&Apache::lonnet::homeserver($unam,$udom);
1902: if (defined($env{'request.course.id'})) {
1903: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1904: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1905: return(&retrievestudentphoto($udom,$unam,$ext));
1906: } else {
1907: my ($result,$perm_reqd)=
1908: &Apache::lonnet::auto_photo_permission($unam,$udom);
1909: if ($result eq 'ok') {
1910: if (!($perm_reqd eq 'yes')) {
1911: return(&retrievestudentphoto($udom,$unam,$ext));
1912: }
1913: }
1914: }
1915: }
1916: } else {
1917: my ($result,$perm_reqd) =
1918: &Apache::lonnet::auto_photo_permission($unam,$udom);
1919: if ($result eq 'ok') {
1920: if (!($perm_reqd eq 'yes')) {
1921: return(&retrievestudentphoto($udom,$unam,$ext));
1922: }
1923: }
1924: }
1925: return '/adm/lonKaputt/lonlogo_broken.gif';
1926: }
1927:
1928: sub retrievestudentphoto {
1929: my ($udom,$unam,$ext,$type) = @_;
1930: my $home=&Apache::lonnet::homeserver($unam,$udom);
1931: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1932: if ($ret eq 'ok') {
1933: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1934: if ($type eq 'thumbnail') {
1935: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1936: }
1937: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1938: return $tokenurl;
1939: } else {
1940: if ($type eq 'thumbnail') {
1941: return '/adm/lonKaputt/genericstudent_tn.gif';
1942: } else {
1943: return '/adm/lonKaputt/lonlogo_broken.gif';
1944: }
1945: }
1946: }
1947:
1948: # -------------------------------------------------------------------- New chat
1949:
1950: sub chatsend {
1951: my ($newentry,$anon,$group)=@_;
1952: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1953: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1954: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1955: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1956: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1957: &escape($newentry)).':'.$group,$chome);
1958: }
1959:
1960: # ------------------------------------------ Find current version of a resource
1961:
1962: sub getversion {
1963: my $fname=&clutter(shift);
1964: unless ($fname=~/^\/res\//) { return -1; }
1965: return ¤tversion(&filelocation('',$fname));
1966: }
1967:
1968: sub currentversion {
1969: my $fname=shift;
1970: my ($result,$cached)=&is_cached_new('resversion',$fname);
1971: if (defined($cached)) { return $result; }
1972: my $author=$fname;
1973: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1974: my ($udom,$uname)=split(/\//,$author);
1975: my $home=homeserver($uname,$udom);
1976: if ($home eq 'no_host') {
1977: return -1;
1978: }
1979: my $answer=reply("currentversion:$fname",$home);
1980: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1981: return -1;
1982: }
1983: return &do_cache_new('resversion',$fname,$answer,600);
1984: }
1985:
1986: # ----------------------------- Subscribe to a resource, return URL if possible
1987:
1988: sub subscribe {
1989: my $fname=shift;
1990: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1991: $fname=~s/[\n\r]//g;
1992: my $author=$fname;
1993: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1994: my ($udom,$uname)=split(/\//,$author);
1995: my $home=homeserver($uname,$udom);
1996: if ($home eq 'no_host') {
1997: return 'not_found';
1998: }
1999: my $answer=reply("sub:$fname",$home);
2000: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2001: $answer.=' by '.$home;
2002: }
2003: return $answer;
2004: }
2005:
2006: # -------------------------------------------------------------- Replicate file
2007:
2008: sub repcopy {
2009: my $filename=shift;
2010: $filename=~s/\/+/\//g;
2011: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2012: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2013: if ($filename=~m|^/home/httpd/html/userfiles/| or
2014: $filename=~m -^/*(uploaded|editupload)/-) {
2015: return &repcopy_userfile($filename);
2016: }
2017: $filename=~s/[\n\r]//g;
2018: my $transname="$filename.in.transfer";
2019: # FIXME: this should flock
2020: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2021: my $remoteurl=subscribe($filename);
2022: if ($remoteurl =~ /^con_lost by/) {
2023: &logthis("Subscribe returned $remoteurl: $filename");
2024: return 'unavailable';
2025: } elsif ($remoteurl eq 'not_found') {
2026: #&logthis("Subscribe returned not_found: $filename");
2027: return 'not_found';
2028: } elsif ($remoteurl =~ /^rejected by/) {
2029: &logthis("Subscribe returned $remoteurl: $filename");
2030: return 'forbidden';
2031: } elsif ($remoteurl eq 'directory') {
2032: return 'ok';
2033: } else {
2034: my $author=$filename;
2035: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2036: my ($udom,$uname)=split(/\//,$author);
2037: my $home=homeserver($uname,$udom);
2038: unless ($home eq $perlvar{'lonHostID'}) {
2039: my @parts=split(/\//,$filename);
2040: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2041: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2042: &logthis("Malconfiguration for replication: $filename");
2043: return 'bad_request';
2044: }
2045: my $count;
2046: for ($count=5;$count<$#parts;$count++) {
2047: $path.="/$parts[$count]";
2048: if ((-e $path)!=1) {
2049: mkdir($path,0777);
2050: }
2051: }
2052: my $ua=new LWP::UserAgent;
2053: my $request=new HTTP::Request('GET',"$remoteurl");
2054: my $response=$ua->request($request,$transname);
2055: if ($response->is_error()) {
2056: unlink($transname);
2057: my $message=$response->status_line;
2058: &logthis("<font color=\"blue\">WARNING:"
2059: ." LWP get: $message: $filename</font>");
2060: return 'unavailable';
2061: } else {
2062: if ($remoteurl!~/\.meta$/) {
2063: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2064: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2065: if ($mresponse->is_error()) {
2066: unlink($filename.'.meta');
2067: &logthis(
2068: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2069: }
2070: }
2071: rename($transname,$filename);
2072: return 'ok';
2073: }
2074: }
2075: }
2076: }
2077:
2078: # ------------------------------------------------ Get server side include body
2079: sub ssi_body {
2080: my ($filelink,%form)=@_;
2081: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2082: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2083: }
2084: my $output='';
2085: my $response;
2086: if ($filelink=~/^https?\:/) {
2087: ($output,$response)=&externalssi($filelink);
2088: } else {
2089: $filelink .= $filelink=~/\?/ ? '&' : '?';
2090: $filelink .= 'inhibitmenu=yes';
2091: ($output,$response)=&ssi($filelink,%form);
2092: }
2093: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2094: $output=~s/^.*?\<body[^\>]*\>//si;
2095: $output=~s/\<\/body\s*\>.*?$//si;
2096: if (wantarray) {
2097: return ($output, $response);
2098: } else {
2099: return $output;
2100: }
2101: }
2102:
2103: # --------------------------------------------------------- Server Side Include
2104:
2105: sub absolute_url {
2106: my ($host_name) = @_;
2107: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2108: if ($host_name eq '') {
2109: $host_name = $ENV{'SERVER_NAME'};
2110: }
2111: return $protocol.$host_name;
2112: }
2113:
2114: #
2115: # Server side include.
2116: # Parameters:
2117: # fn Possibly encrypted resource name/id.
2118: # form Hash that describes how the rendering should be done
2119: # and other things.
2120: # Returns:
2121: # Scalar context: The content of the response.
2122: # Array context: 2 element list of the content and the full response object.
2123: #
2124: sub ssi {
2125:
2126: my ($fn,%form)=@_;
2127: my $ua=new LWP::UserAgent;
2128: my $request;
2129:
2130: $form{'no_update_last_known'}=1;
2131: &Apache::lonenc::check_encrypt(\$fn);
2132: if (%form) {
2133: $request=new HTTP::Request('POST',&absolute_url().$fn);
2134: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2135: } else {
2136: $request=new HTTP::Request('GET',&absolute_url().$fn);
2137: }
2138:
2139: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2140: my $response=$ua->request($request);
2141:
2142: if (wantarray) {
2143: return ($response->content, $response);
2144: } else {
2145: return $response->content;
2146: }
2147: }
2148:
2149: sub externalssi {
2150: my ($url)=@_;
2151: my $ua=new LWP::UserAgent;
2152: my $request=new HTTP::Request('GET',$url);
2153: my $response=$ua->request($request);
2154: if (wantarray) {
2155: return ($response->content, $response);
2156: } else {
2157: return $response->content;
2158: }
2159: }
2160:
2161: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2162:
2163: sub allowuploaded {
2164: my ($srcurl,$url)=@_;
2165: $url=&clutter(&declutter($url));
2166: my $dir=$url;
2167: $dir=~s/\/[^\/]+$//;
2168: my %httpref=();
2169: my $httpurl=&hreflocation('',$url);
2170: $httpref{'httpref.'.$httpurl}=$srcurl;
2171: &Apache::lonnet::appenv(\%httpref);
2172: }
2173:
2174: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2175: # input: action, courseID, current domain, intended
2176: # path to file, source of file, instruction to parse file for objects,
2177: # ref to hash for embedded objects,
2178: # ref to hash for codebase of java objects.
2179: #
2180: # output: url to file (if action was uploaddoc),
2181: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2182: #
2183: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2184: # course.
2185: #
2186: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2187: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2188: # course's home server.
2189: #
2190: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2191: # be copied from $source (current location) to
2192: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2193: # and will then be copied to
2194: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2195: # course's home server.
2196: #
2197: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2198: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2199: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2200: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2201: # in course's home server.
2202: #
2203:
2204: sub process_coursefile {
2205: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
2206: my $fetchresult;
2207: my $home=&homeserver($docuname,$docudom);
2208: if ($action eq 'propagate') {
2209: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2210: $home);
2211: } else {
2212: my $fpath = '';
2213: my $fname = $file;
2214: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2215: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2216: my $filepath = &build_filepath($fpath);
2217: if ($action eq 'copy') {
2218: if ($source eq '') {
2219: $fetchresult = 'no source file';
2220: return $fetchresult;
2221: } else {
2222: my $destination = $filepath.'/'.$fname;
2223: rename($source,$destination);
2224: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2225: $home);
2226: }
2227: } elsif ($action eq 'uploaddoc') {
2228: open(my $fh,'>'.$filepath.'/'.$fname);
2229: print $fh $env{'form.'.$source};
2230: close($fh);
2231: if ($parser eq 'parse') {
2232: my $mm = new File::MMagic;
2233: my $mime_type = $mm->checktype_filename($filepath.'/'.$fname);
2234: if ($mime_type eq 'text/html') {
2235: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2236: unless ($parse_result eq 'ok') {
2237: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2238: }
2239: }
2240: }
2241: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2242: $home);
2243: if ($fetchresult eq 'ok') {
2244: return '/uploaded/'.$fpath.'/'.$fname;
2245: } else {
2246: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2247: ' to host '.$home.': '.$fetchresult);
2248: return '/adm/notfound.html';
2249: }
2250: }
2251: }
2252: unless ( $fetchresult eq 'ok') {
2253: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2254: ' to host '.$home.': '.$fetchresult);
2255: }
2256: return $fetchresult;
2257: }
2258:
2259: sub build_filepath {
2260: my ($fpath) = @_;
2261: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2262: unless ($fpath eq '') {
2263: my @parts=split('/',$fpath);
2264: foreach my $part (@parts) {
2265: $filepath.= '/'.$part;
2266: if ((-e $filepath)!=1) {
2267: mkdir($filepath,0777);
2268: }
2269: }
2270: }
2271: return $filepath;
2272: }
2273:
2274: sub store_edited_file {
2275: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2276: my $file = $primary_url;
2277: $file =~ s#^/uploaded/$docudom/$docuname/##;
2278: my $fpath = '';
2279: my $fname = $file;
2280: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2281: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2282: my $filepath = &build_filepath($fpath);
2283: open(my $fh,'>'.$filepath.'/'.$fname);
2284: print $fh $content;
2285: close($fh);
2286: my $home=&homeserver($docuname,$docudom);
2287: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2288: $home);
2289: if ($$fetchresult eq 'ok') {
2290: return '/uploaded/'.$fpath.'/'.$fname;
2291: } else {
2292: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2293: ' to host '.$home.': '.$$fetchresult);
2294: return '/adm/notfound.html';
2295: }
2296: }
2297:
2298: sub clean_filename {
2299: my ($fname,$args)=@_;
2300: # Replace Windows backslashes by forward slashes
2301: $fname=~s/\\/\//g;
2302: if (!$args->{'keep_path'}) {
2303: # Get rid of everything but the actual filename
2304: $fname=~s/^.*\/([^\/]+)$/$1/;
2305: }
2306: # Replace spaces by underscores
2307: $fname=~s/\s+/\_/g;
2308: # Replace all other weird characters by nothing
2309: $fname=~s{[^/\w\.\-]}{}g;
2310: # Replace all .\d. sequences with _\d. so they no longer look like version
2311: # numbers
2312: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2313: return $fname;
2314: }
2315: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2316: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2317: # image with the same aspect ratio as the original, but with dimensions which do
2318: # not exceed $resizewidth and $resizeheight.
2319:
2320: sub resizeImage {
2321: my ($img_path,$resizewidth,$resizeheight) = @_;
2322: my $ima = Image::Magick->new;
2323: my $resized;
2324: if (-e $img_path) {
2325: $ima->Read($img_path);
2326: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2327: my $width = $ima->Get('width');
2328: my $height = $ima->Get('height');
2329: if ($width > $resizewidth) {
2330: my $factor = $width/$resizewidth;
2331: my $newheight = $height/$factor;
2332: $ima->Scale(width=>$resizewidth,height=>$newheight);
2333: $resized = 1;
2334: }
2335: }
2336: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2337: my $width = $ima->Get('width');
2338: my $height = $ima->Get('height');
2339: if ($height > $resizeheight) {
2340: my $factor = $height/$resizeheight;
2341: my $newwidth = $width/$factor;
2342: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2343: $resized = 1;
2344: }
2345: }
2346: if ($resized) {
2347: $ima->Write($img_path);
2348: }
2349: }
2350: return;
2351: }
2352:
2353: # --------------- Take an uploaded file and put it into the userfiles directory
2354: # input: $formname - the contents of the file are in $env{"form.$formname"}
2355: # the desired filename is in $env{"form.$formname.filename"}
2356: # $context - possible values: coursedoc, existingfile, overwrite,
2357: # canceloverwrite, or ''.
2358: # if 'coursedoc': upload to the current course
2359: # if 'existingfile': write file to tmp/overwrites directory
2360: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2361: # $context is passed as argument to &finishuserfileupload
2362: # $subdir - directory in userfile to store the file into
2363: # $parser - instruction to parse file for objects ($parser = parse)
2364: # $allfiles - reference to hash for embedded objects
2365: # $codebase - reference to hash for codebase of java objects
2366: # $desuname - username for permanent storage of uploaded file
2367: # $dsetudom - domain for permanaent storage of uploaded file
2368: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2369: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2370: # $resizewidth - width (pixels) to which to resize uploaded image
2371: # $resizeheight - height (pixels) to which to resize uploaded image
2372: #
2373: # output: url of file in userspace, or error: <message>
2374: # or /adm/notfound.html if failure to upload occurse
2375:
2376: sub userfileupload {
2377: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2378: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight)=@_;
2379: if (!defined($subdir)) { $subdir='unknown'; }
2380: my $fname=$env{'form.'.$formname.'.filename'};
2381: $fname=&clean_filename($fname);
2382: # See if there is anything left
2383: unless ($fname) { return 'error: no uploaded file'; }
2384: chop($env{'form.'.$formname});
2385: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2386: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2387: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2388: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2389: my $now = time;
2390: my $filepath;
2391: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2392: $filepath = 'tmp/helprequests/'.$now;
2393: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2394: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2395: '_'.$env{'user.domain'}.'/pending';
2396: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2397: my ($docuname,$docudom);
2398: if ($destudom) {
2399: $docudom = $destudom;
2400: } else {
2401: $docudom = $env{'user.domain'};
2402: }
2403: if ($destuname) {
2404: $docuname = $destuname;
2405: } else {
2406: $docuname = $env{'user.name'};
2407: }
2408: if (exists($env{'form.group'})) {
2409: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2410: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2411: }
2412: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2413: if ($context eq 'canceloverwrite') {
2414: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2415: if (-e $tempfile) {
2416: my @info = stat($tempfile);
2417: if ($info[9] eq $env{'form.timestamp'}) {
2418: unlink($tempfile);
2419: }
2420: }
2421: return;
2422: }
2423: }
2424: # Create the directory if not present
2425: my @parts=split(/\//,$filepath);
2426: my $fullpath = $perlvar{'lonDaemons'};
2427: for (my $i=0;$i<@parts;$i++) {
2428: $fullpath .= '/'.$parts[$i];
2429: if ((-e $fullpath)!=1) {
2430: mkdir($fullpath,0777);
2431: }
2432: }
2433: open(my $fh,'>'.$fullpath.'/'.$fname);
2434: print $fh $env{'form.'.$formname};
2435: close($fh);
2436: if ($context eq 'existingfile') {
2437: my @info = stat($fullpath.'/'.$fname);
2438: return ($fullpath.'/'.$fname,$info[9]);
2439: } else {
2440: return $fullpath.'/'.$fname;
2441: }
2442: }
2443: if ($subdir eq 'scantron') {
2444: $fname = 'scantron_orig_'.$fname;
2445: } else {
2446: $fname="$subdir/$fname";
2447: }
2448: if ($context eq 'coursedoc') {
2449: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2450: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2451: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2452: return &finishuserfileupload($docuname,$docudom,
2453: $formname,$fname,$parser,$allfiles,
2454: $codebase,$thumbwidth,$thumbheight,
2455: $resizewidth,$resizeheight,$context);
2456: } else {
2457: $fname=$env{'form.folder'}.'/'.$fname;
2458: return &process_coursefile('uploaddoc',$docuname,$docudom,
2459: $fname,$formname,$parser,
2460: $allfiles,$codebase);
2461: }
2462: } elsif (defined($destuname)) {
2463: my $docuname=$destuname;
2464: my $docudom=$destudom;
2465: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2466: $parser,$allfiles,$codebase,
2467: $thumbwidth,$thumbheight,
2468: $resizewidth,$resizeheight,$context);
2469: } else {
2470: my $docuname=$env{'user.name'};
2471: my $docudom=$env{'user.domain'};
2472: if (exists($env{'form.group'})) {
2473: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2474: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2475: }
2476: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2477: $parser,$allfiles,$codebase,
2478: $thumbwidth,$thumbheight,
2479: $resizewidth,$resizeheight,$context);
2480: }
2481: }
2482:
2483: sub finishuserfileupload {
2484: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2485: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context) = @_;
2486: my $path=$docudom.'/'.$docuname.'/';
2487: my $filepath=$perlvar{'lonDocRoot'};
2488:
2489: my ($fnamepath,$file,$fetchthumb);
2490: $file=$fname;
2491: if ($fname=~m|/|) {
2492: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2493: $path.=$fnamepath.'/';
2494: }
2495: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2496: my $count;
2497: for ($count=4;$count<=$#parts;$count++) {
2498: $filepath.="/$parts[$count]";
2499: if ((-e $filepath)!=1) {
2500: mkdir($filepath,0777);
2501: }
2502: }
2503:
2504: # Save the file
2505: {
2506: if (!open(FH,'>'.$filepath.'/'.$file)) {
2507: &logthis('Failed to create '.$filepath.'/'.$file);
2508: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2509: return '/adm/notfound.html';
2510: }
2511: if ($context eq 'overwrite') {
2512: my $source = $perlvar{'lonDaemons'}.'/tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2513: my $target = $filepath.'/'.$file;
2514: if (-e $source) {
2515: my @info = stat($source);
2516: if ($info[9] eq $env{'form.timestamp'}) {
2517: unless (&File::Copy::move($source,$target)) {
2518: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2519: return "Moving from $source failed";
2520: }
2521: } else {
2522: return "Temporary file: $source had unexpected date/time for last modification";
2523: }
2524: } else {
2525: return "Temporary file: $source missing";
2526: }
2527: } elsif (!print FH ($env{'form.'.$formname})) {
2528: &logthis('Failed to write to '.$filepath.'/'.$file);
2529: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2530: return '/adm/notfound.html';
2531: }
2532: close(FH);
2533: if ($resizewidth && $resizeheight) {
2534: my $mm = new File::MMagic;
2535: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2536: if ($mime_type =~ m{^image/}) {
2537: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2538: }
2539: }
2540: }
2541: if ($parser eq 'parse') {
2542: my $mm = new File::MMagic;
2543: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2544: if ($mime_type eq 'text/html') {
2545: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2546: $allfiles,$codebase);
2547: unless ($parse_result eq 'ok') {
2548: &logthis('Failed to parse '.$filepath.$file.
2549: ' for embedded media: '.$parse_result);
2550: }
2551: }
2552: }
2553: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2554: my $input = $filepath.'/'.$file;
2555: my $output = $filepath.'/'.'tn-'.$file;
2556: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2557: system("convert -sample $thumbsize $input $output");
2558: if (-e $filepath.'/'.'tn-'.$file) {
2559: $fetchthumb = 1;
2560: }
2561: }
2562:
2563: # Notify homeserver to grep it
2564: #
2565: my $docuhome=&homeserver($docuname,$docudom);
2566: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2567: if ($fetchresult eq 'ok') {
2568: if ($fetchthumb) {
2569: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2570: if ($thumbresult ne 'ok') {
2571: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2572: $docuhome.': '.$thumbresult);
2573: }
2574: }
2575: #
2576: # Return the URL to it
2577: return '/uploaded/'.$path.$file;
2578: } else {
2579: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2580: ': '.$fetchresult);
2581: return '/adm/notfound.html';
2582: }
2583: }
2584:
2585: sub extract_embedded_items {
2586: my ($fullpath,$allfiles,$codebase,$content) = @_;
2587: my @state = ();
2588: my %javafiles = (
2589: codebase => '',
2590: code => '',
2591: archive => ''
2592: );
2593: my %mediafiles = (
2594: src => '',
2595: movie => '',
2596: );
2597: my $p;
2598: if ($content) {
2599: $p = HTML::LCParser->new($content);
2600: } else {
2601: $p = HTML::LCParser->new($fullpath);
2602: }
2603: while (my $t=$p->get_token()) {
2604: if ($t->[0] eq 'S') {
2605: my ($tagname, $attr) = ($t->[1],$t->[2]);
2606: push(@state, $tagname);
2607: if (lc($tagname) eq 'allow') {
2608: &add_filetype($allfiles,$attr->{'src'},'src');
2609: }
2610: if (lc($tagname) eq 'img') {
2611: &add_filetype($allfiles,$attr->{'src'},'src');
2612: }
2613: if (lc($tagname) eq 'a') {
2614: &add_filetype($allfiles,$attr->{'href'},'href');
2615: }
2616: if (lc($tagname) eq 'script') {
2617: if ($attr->{'archive'} =~ /\.jar$/i) {
2618: &add_filetype($allfiles,$attr->{'archive'},'archive');
2619: } else {
2620: &add_filetype($allfiles,$attr->{'src'},'src');
2621: }
2622: }
2623: if (lc($tagname) eq 'link') {
2624: if (lc($attr->{'rel'}) eq 'stylesheet') {
2625: &add_filetype($allfiles,$attr->{'href'},'href');
2626: }
2627: }
2628: if (lc($tagname) eq 'object' ||
2629: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2630: foreach my $item (keys(%javafiles)) {
2631: $javafiles{$item} = '';
2632: }
2633: }
2634: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2635: my $name = lc($attr->{'name'});
2636: foreach my $item (keys(%javafiles)) {
2637: if ($name eq $item) {
2638: $javafiles{$item} = $attr->{'value'};
2639: last;
2640: }
2641: }
2642: foreach my $item (keys(%mediafiles)) {
2643: if ($name eq $item) {
2644: &add_filetype($allfiles, $attr->{'value'}, 'value');
2645: last;
2646: }
2647: }
2648: }
2649: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2650: foreach my $item (keys(%javafiles)) {
2651: if ($attr->{$item}) {
2652: $javafiles{$item} = $attr->{$item};
2653: last;
2654: }
2655: }
2656: foreach my $item (keys(%mediafiles)) {
2657: if ($attr->{$item}) {
2658: &add_filetype($allfiles,$attr->{$item},$item);
2659: last;
2660: }
2661: }
2662: }
2663: } elsif ($t->[0] eq 'E') {
2664: my ($tagname) = ($t->[1]);
2665: if ($javafiles{'codebase'} ne '') {
2666: $javafiles{'codebase'} .= '/';
2667: }
2668: if (lc($tagname) eq 'applet' ||
2669: lc($tagname) eq 'object' ||
2670: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2671: ) {
2672: foreach my $item (keys(%javafiles)) {
2673: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2674: my $file=$javafiles{'codebase'}.$javafiles{$item};
2675: &add_filetype($allfiles,$file,$item);
2676: }
2677: }
2678: }
2679: pop @state;
2680: }
2681: }
2682: return 'ok';
2683: }
2684:
2685: sub add_filetype {
2686: my ($allfiles,$file,$type)=@_;
2687: if (exists($allfiles->{$file})) {
2688: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2689: push(@{$allfiles->{$file}}, &escape($type));
2690: }
2691: } else {
2692: @{$allfiles->{$file}} = (&escape($type));
2693: }
2694: }
2695:
2696: sub removeuploadedurl {
2697: my ($url)=@_;
2698: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2699: return &removeuserfile($uname,$udom,$fname);
2700: }
2701:
2702: sub removeuserfile {
2703: my ($docuname,$docudom,$fname)=@_;
2704: my $home=&homeserver($docuname,$docudom);
2705: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2706: if ($result eq 'ok') {
2707: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2708: my $metafile = $fname.'.meta';
2709: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2710: my $url = "/uploaded/$docudom/$docuname/$fname";
2711: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2712: my $sqlresult =
2713: &update_portfolio_table($docuname,$docudom,$file,
2714: 'portfolio_metadata',$group,
2715: 'delete');
2716: }
2717: }
2718: return $result;
2719: }
2720:
2721: sub mkdiruserfile {
2722: my ($docuname,$docudom,$dir)=@_;
2723: my $home=&homeserver($docuname,$docudom);
2724: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2725: }
2726:
2727: sub renameuserfile {
2728: my ($docuname,$docudom,$old,$new)=@_;
2729: my $home=&homeserver($docuname,$docudom);
2730: my $result = &reply("renameuserfile:$docudom:$docuname:".
2731: &escape("$old").':'.&escape("$new"),$home);
2732: if ($result eq 'ok') {
2733: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2734: my $oldmeta = $old.'.meta';
2735: my $newmeta = $new.'.meta';
2736: my $metaresult =
2737: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2738: my $url = "/uploaded/$docudom/$docuname/$old";
2739: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2740: my $sqlresult =
2741: &update_portfolio_table($docuname,$docudom,$file,
2742: 'portfolio_metadata',$group,
2743: 'delete');
2744: }
2745: }
2746: return $result;
2747: }
2748:
2749: # ------------------------------------------------------------------------- Log
2750:
2751: sub log {
2752: my ($dom,$nam,$hom,$what)=@_;
2753: return critical("log:$dom:$nam:$what",$hom);
2754: }
2755:
2756: # ------------------------------------------------------------------ Course Log
2757: #
2758: # This routine flushes several buffers of non-mission-critical nature
2759: #
2760:
2761: sub flushcourselogs {
2762: &logthis('Flushing log buffers');
2763: #
2764: # course logs
2765: # This is a log of all transactions in a course, which can be used
2766: # for data mining purposes
2767: #
2768: # It also collects the courseid database, which lists last transaction
2769: # times and course titles for all courseids
2770: #
2771: my %courseidbuffer=();
2772: foreach my $crsid (keys(%courselogs)) {
2773: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2774: &escape($courselogs{$crsid}),
2775: $coursehombuf{$crsid}) eq 'ok') {
2776: delete $courselogs{$crsid};
2777: } else {
2778: &logthis('Failed to flush log buffer for '.$crsid);
2779: if (length($courselogs{$crsid})>40000) {
2780: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2781: " exceeded maximum size, deleting.</font>");
2782: delete $courselogs{$crsid};
2783: }
2784: }
2785: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2786: 'description' => $coursedescrbuf{$crsid},
2787: 'inst_code' => $courseinstcodebuf{$crsid},
2788: 'type' => $coursetypebuf{$crsid},
2789: 'owner' => $courseownerbuf{$crsid},
2790: };
2791: }
2792: #
2793: # Write course id database (reverse lookup) to homeserver of courses
2794: # Is used in pickcourse
2795: #
2796: foreach my $crs_home (keys(%courseidbuffer)) {
2797: my $response = &courseidput(&host_domain($crs_home),
2798: $courseidbuffer{$crs_home},
2799: $crs_home,'timeonly');
2800: }
2801: #
2802: # File accesses
2803: # Writes to the dynamic metadata of resources to get hit counts, etc.
2804: #
2805: foreach my $entry (keys(%accesshash)) {
2806: if ($entry =~ /___count$/) {
2807: my ($dom,$name);
2808: ($dom,$name,undef)=
2809: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2810: if (! defined($dom) || $dom eq '' ||
2811: ! defined($name) || $name eq '') {
2812: my $cid = $env{'request.course.id'};
2813: $dom = $env{'request.'.$cid.'.domain'};
2814: $name = $env{'request.'.$cid.'.num'};
2815: }
2816: my $value = $accesshash{$entry};
2817: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2818: my %temphash=($url => $value);
2819: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2820: if ($result eq 'ok') {
2821: delete $accesshash{$entry};
2822: } elsif ($result eq 'unknown_cmd') {
2823: # Target server has old code running on it.
2824: my %temphash=($entry => $value);
2825: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2826: delete $accesshash{$entry};
2827: }
2828: }
2829: } else {
2830: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2831: my %temphash=($entry => $accesshash{$entry});
2832: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2833: delete $accesshash{$entry};
2834: }
2835: }
2836: }
2837: #
2838: # Roles
2839: # Reverse lookup of user roles for course faculty/staff and co-authorship
2840: #
2841: foreach my $entry (keys(%userrolehash)) {
2842: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2843: split(/\:/,$entry);
2844: if (&Apache::lonnet::put('nohist_userroles',
2845: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2846: $rudom,$runame) eq 'ok') {
2847: delete $userrolehash{$entry};
2848: }
2849: }
2850: #
2851: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2852: #
2853: my %domrolebuffer = ();
2854: foreach my $entry (keys(%domainrolehash)) {
2855: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2856: if ($domrolebuffer{$rudom}) {
2857: $domrolebuffer{$rudom}.='&'.&escape($entry).
2858: '='.&escape($domainrolehash{$entry});
2859: } else {
2860: $domrolebuffer{$rudom}.=&escape($entry).
2861: '='.&escape($domainrolehash{$entry});
2862: }
2863: delete $domainrolehash{$entry};
2864: }
2865: foreach my $dom (keys(%domrolebuffer)) {
2866: my %servers = &get_servers($dom,'library');
2867: foreach my $tryserver (keys(%servers)) {
2868: unless (&reply('domroleput:'.$dom.':'.
2869: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2870: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2871: }
2872: }
2873: }
2874: $dumpcount++;
2875: }
2876:
2877: sub courselog {
2878: my $what=shift;
2879: $what=time.':'.$what;
2880: unless ($env{'request.course.id'}) { return ''; }
2881: $coursedombuf{$env{'request.course.id'}}=
2882: $env{'course.'.$env{'request.course.id'}.'.domain'};
2883: $coursenumbuf{$env{'request.course.id'}}=
2884: $env{'course.'.$env{'request.course.id'}.'.num'};
2885: $coursehombuf{$env{'request.course.id'}}=
2886: $env{'course.'.$env{'request.course.id'}.'.home'};
2887: $coursedescrbuf{$env{'request.course.id'}}=
2888: $env{'course.'.$env{'request.course.id'}.'.description'};
2889: $courseinstcodebuf{$env{'request.course.id'}}=
2890: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2891: $courseownerbuf{$env{'request.course.id'}}=
2892: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2893: $coursetypebuf{$env{'request.course.id'}}=
2894: $env{'course.'.$env{'request.course.id'}.'.type'};
2895: if (defined $courselogs{$env{'request.course.id'}}) {
2896: $courselogs{$env{'request.course.id'}}.='&'.$what;
2897: } else {
2898: $courselogs{$env{'request.course.id'}}.=$what;
2899: }
2900: if (length($courselogs{$env{'request.course.id'}})>4048) {
2901: &flushcourselogs();
2902: }
2903: }
2904:
2905: sub courseacclog {
2906: my $fnsymb=shift;
2907: unless ($env{'request.course.id'}) { return ''; }
2908: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2909: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2910: $what.=':POST';
2911: # FIXME: Probably ought to escape things....
2912: foreach my $key (keys(%env)) {
2913: if ($key=~/^form\.(.*)/) {
2914: my $formitem = $1;
2915: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2916: $what.=':'.$formitem.'='.$env{$key};
2917: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2918: $what.=':'.$formitem.'='.$env{$key};
2919: }
2920: }
2921: }
2922: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2923: # FIXME: We should not be depending on a form parameter that someone
2924: # editing lonsearchcat.pm might change in the future.
2925: if ($env{'form.phase'} eq 'course_search') {
2926: $what.= ':POST';
2927: # FIXME: Probably ought to escape things....
2928: foreach my $element ('courseexp','crsfulltext','crsrelated',
2929: 'crsdiscuss') {
2930: $what.=':'.$element.'='.$env{'form.'.$element};
2931: }
2932: }
2933: }
2934: &courselog($what);
2935: }
2936:
2937: sub countacc {
2938: my $url=&declutter(shift);
2939: return if (! defined($url) || $url eq '');
2940: unless ($env{'request.course.id'}) { return ''; }
2941: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2942: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2943: $accesshash{$key}++;
2944: }
2945:
2946: sub linklog {
2947: my ($from,$to)=@_;
2948: $from=&declutter($from);
2949: $to=&declutter($to);
2950: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2951: $accesshash{$to.'___'.$from.'___goto'}=1;
2952: }
2953:
2954: sub userrolelog {
2955: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2956: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2957: ($trole=~/^in/) || ($trole=~/^cc/) ||
2958: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2959: ($trole=~/^ta/) || ($trole=~/^co/)) {
2960: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2961: $userrolehash
2962: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2963: =$tend.':'.$tstart;
2964: }
2965: if (($env{'request.role'} =~ /dc\./) &&
2966: (($trole=~/^au/) || ($trole=~/^in/) ||
2967: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2968: ($trole=~/^cr/) || ($trole=~/^ta/) ||
2969: ($trole=~/^co/))) {
2970: $userrolehash
2971: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2972: =$tend.':'.$tstart;
2973: }
2974: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2975: ($trole=~/^li/) || ($trole=~/^li/) ||
2976: ($trole=~/^au/) || ($trole=~/^dg/) ||
2977: ($trole=~/^sc/)) {
2978: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2979: $domainrolehash
2980: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2981: = $tend.':'.$tstart;
2982: }
2983: }
2984:
2985: sub courserolelog {
2986: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2987: if (($trole eq 'cc') || ($trole eq 'in') ||
2988: ($trole eq 'ep') || ($trole eq 'ad') ||
2989: ($trole eq 'ta') || ($trole eq 'st') ||
2990: ($trole=~/^cr/) || ($trole eq 'gr') ||
2991: ($trole eq 'co')) {
2992: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2993: my $cdom = $1;
2994: my $cnum = $2;
2995: my $sec = $3;
2996: my $namespace = 'rolelog';
2997: my %storehash = (
2998: role => $trole,
2999: start => $tstart,
3000: end => $tend,
3001: selfenroll => $selfenroll,
3002: context => $context,
3003: );
3004: if ($trole eq 'gr') {
3005: $namespace = 'groupslog';
3006: $storehash{'group'} = $sec;
3007: } else {
3008: $storehash{'section'} = $sec;
3009: }
3010: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3011: if (($trole ne 'st') || ($sec ne '')) {
3012: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3013: }
3014: }
3015: }
3016: return;
3017: }
3018:
3019: sub get_course_adv_roles {
3020: my ($cid,$codes) = @_;
3021: $cid=$env{'request.course.id'} unless (defined($cid));
3022: my %coursehash=&coursedescription($cid);
3023: my $crstype = &Apache::loncommon::course_type($cid);
3024: my %nothide=();
3025: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3026: if ($user !~ /:/) {
3027: $nothide{join(':',split(/[\@]/,$user))}=1;
3028: } else {
3029: $nothide{$user}=1;
3030: }
3031: }
3032: my %returnhash=();
3033: my %dumphash=
3034: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3035: my $now=time;
3036: my %privileged;
3037: foreach my $entry (keys(%dumphash)) {
3038: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3039: if (($tstart) && ($tstart<0)) { next; }
3040: if (($tend) && ($tend<$now)) { next; }
3041: if (($tstart) && ($now<$tstart)) { next; }
3042: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3043: if ($username eq '' || $domain eq '') { next; }
3044: unless (ref($privileged{$domain}) eq 'HASH') {
3045: my %dompersonnel =
3046: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3047: $privileged{$domain} = {};
3048: foreach my $server (keys(%dompersonnel)) {
3049: if (ref($dompersonnel{$server}) eq 'HASH') {
3050: foreach my $user (keys(%{$dompersonnel{$server}})) {
3051: my ($trole,$uname,$udom) = split(/:/,$user);
3052: $privileged{$udom}{$uname} = 1;
3053: }
3054: }
3055: }
3056: }
3057: if ((exists($privileged{$domain}{$username})) &&
3058: (!$nothide{$username.':'.$domain})) { next; }
3059: if ($role eq 'cr') { next; }
3060: if ($codes) {
3061: if ($section) { $role .= ':'.$section; }
3062: if ($returnhash{$role}) {
3063: $returnhash{$role}.=','.$username.':'.$domain;
3064: } else {
3065: $returnhash{$role}=$username.':'.$domain;
3066: }
3067: } else {
3068: my $key=&plaintext($role,$crstype);
3069: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3070: if ($returnhash{$key}) {
3071: $returnhash{$key}.=','.$username.':'.$domain;
3072: } else {
3073: $returnhash{$key}=$username.':'.$domain;
3074: }
3075: }
3076: }
3077: return %returnhash;
3078: }
3079:
3080: sub get_my_roles {
3081: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3082: unless (defined($uname)) { $uname=$env{'user.name'}; }
3083: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3084: my (%dumphash,%nothide);
3085: if ($context eq 'userroles') {
3086: my $extra = &freeze_escape({'skipcheck' => 1});
3087: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3088: } else {
3089: %dumphash=
3090: &dump('nohist_userroles',$udom,$uname);
3091: if ($hidepriv) {
3092: my %coursehash=&coursedescription($udom.'_'.$uname);
3093: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3094: if ($user !~ /:/) {
3095: $nothide{join(':',split(/[\@]/,$user))} = 1;
3096: } else {
3097: $nothide{$user} = 1;
3098: }
3099: }
3100: }
3101: }
3102: my %returnhash=();
3103: my $now=time;
3104: my %privileged;
3105: foreach my $entry (keys(%dumphash)) {
3106: my ($role,$tend,$tstart);
3107: if ($context eq 'userroles') {
3108: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3109: } else {
3110: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3111: }
3112: if (($tstart) && ($tstart<0)) { next; }
3113: my $status = 'active';
3114: if (($tend) && ($tend<=$now)) {
3115: $status = 'previous';
3116: }
3117: if (($tstart) && ($now<$tstart)) {
3118: $status = 'future';
3119: }
3120: if (ref($types) eq 'ARRAY') {
3121: if (!grep(/^\Q$status\E$/,@{$types})) {
3122: next;
3123: }
3124: } else {
3125: if ($status ne 'active') {
3126: next;
3127: }
3128: }
3129: my ($rolecode,$username,$domain,$section,$area);
3130: if ($context eq 'userroles') {
3131: ($area,$rolecode) = split(/_/,$entry);
3132: (undef,$domain,$username,$section) = split(/\//,$area);
3133: } else {
3134: ($role,$username,$domain,$section) = split(/\:/,$entry);
3135: }
3136: if (ref($roledoms) eq 'ARRAY') {
3137: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3138: next;
3139: }
3140: }
3141: if (ref($roles) eq 'ARRAY') {
3142: if (!grep(/^\Q$role\E$/,@{$roles})) {
3143: if ($role =~ /^cr\//) {
3144: if (!grep(/^cr$/,@{$roles})) {
3145: next;
3146: }
3147: } else {
3148: next;
3149: }
3150: }
3151: }
3152: if ($hidepriv) {
3153: if ($context eq 'userroles') {
3154: if ((&privileged($username,$domain)) &&
3155: (!$nothide{$username.':'.$domain})) {
3156: next;
3157: }
3158: } else {
3159: unless (ref($privileged{$domain}) eq 'HASH') {
3160: my %dompersonnel =
3161: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3162: $privileged{$domain} = {};
3163: if (keys(%dompersonnel)) {
3164: foreach my $server (keys(%dompersonnel)) {
3165: if (ref($dompersonnel{$server}) eq 'HASH') {
3166: foreach my $user (keys(%{$dompersonnel{$server}})) {
3167: my ($trole,$uname,$udom) = split(/:/,$user);
3168: $privileged{$udom}{$uname} = $trole;
3169: }
3170: }
3171: }
3172: }
3173: }
3174: if (exists($privileged{$domain}{$username})) {
3175: if (!$nothide{$username.':'.$domain}) {
3176: next;
3177: }
3178: }
3179: }
3180: }
3181: if ($withsec) {
3182: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3183: $tstart.':'.$tend;
3184: } else {
3185: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3186: }
3187: }
3188: return %returnhash;
3189: }
3190:
3191: # ----------------------------------------------------- Frontpage Announcements
3192: #
3193: #
3194:
3195: sub postannounce {
3196: my ($server,$text)=@_;
3197: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3198: unless ($text=~/\w/) { $text=''; }
3199: return &reply('setannounce:'.&escape($text),$server);
3200: }
3201:
3202: sub getannounce {
3203:
3204: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3205: my $announcement='';
3206: while (my $line = <$fh>) { $announcement .= $line; }
3207: close($fh);
3208: if ($announcement=~/\w/) {
3209: return
3210: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3211: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3212: } else {
3213: return '';
3214: }
3215: } else {
3216: return '';
3217: }
3218: }
3219:
3220: # ---------------------------------------------------------- Course ID routines
3221: # Deal with domain's nohist_courseid.db files
3222: #
3223:
3224: sub courseidput {
3225: my ($domain,$storehash,$coursehome,$caller) = @_;
3226: return unless (ref($storehash) eq 'HASH');
3227: my $outcome;
3228: if ($caller eq 'timeonly') {
3229: my $cids = '';
3230: foreach my $item (keys(%$storehash)) {
3231: $cids.=&escape($item).'&';
3232: }
3233: $cids=~s/\&$//;
3234: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3235: $coursehome);
3236: } else {
3237: my $items = '';
3238: foreach my $item (keys(%$storehash)) {
3239: $items.= &escape($item).'='.
3240: &freeze_escape($$storehash{$item}).'&';
3241: }
3242: $items=~s/\&$//;
3243: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3244: $coursehome);
3245: }
3246: if ($outcome eq 'unknown_cmd') {
3247: my $what;
3248: foreach my $cid (keys(%$storehash)) {
3249: $what .= &escape($cid).'=';
3250: foreach my $item ('description','inst_code','owner','type') {
3251: $what .= &escape($storehash->{$cid}{$item}).':';
3252: }
3253: $what =~ s/\:$/&/;
3254: }
3255: $what =~ s/\&$//;
3256: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3257: } else {
3258: return $outcome;
3259: }
3260: }
3261:
3262: sub courseiddump {
3263: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3264: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3265: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3266: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3267: my $as_hash = 1;
3268: my %returnhash;
3269: if (!$domfilter) { $domfilter=''; }
3270: my %libserv = &all_library();
3271: foreach my $tryserver (keys(%libserv)) {
3272: if ( ( $hostidflag == 1
3273: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3274: || (!defined($hostidflag)) ) {
3275:
3276: if (($domfilter eq '') ||
3277: (&host_domain($tryserver) eq $domfilter)) {
3278: my $rep =
3279: &reply('courseiddump:'.&host_domain($tryserver).':'.
3280: $sincefilter.':'.&escape($descfilter).':'.
3281: &escape($instcodefilter).':'.&escape($ownerfilter).
3282: ':'.&escape($coursefilter).':'.&escape($typefilter).
3283: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3284: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3285: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3286: &escape($cc_clone).':'.$cloneonly.':'.
3287: &escape($createdbefore).':'.&escape($createdafter).':'.
3288: &escape($creationcontext).':'.$domcloner,
3289: $tryserver);
3290: my @pairs=split(/\&/,$rep);
3291: foreach my $item (@pairs) {
3292: my ($key,$value)=split(/\=/,$item,2);
3293: $key = &unescape($key);
3294: next if ($key =~ /^error: 2 /);
3295: my $result = &thaw_unescape($value);
3296: if (ref($result) eq 'HASH') {
3297: $returnhash{$key}=$result;
3298: } else {
3299: my @responses = split(/:/,$value);
3300: my @items = ('description','inst_code','owner','type');
3301: for (my $i=0; $i<@responses; $i++) {
3302: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3303: }
3304: }
3305: }
3306: }
3307: }
3308: }
3309: return %returnhash;
3310: }
3311:
3312: sub courselastaccess {
3313: my ($cdom,$cnum,$hostidref) = @_;
3314: my %returnhash;
3315: if ($cdom && $cnum) {
3316: my $chome = &homeserver($cnum,$cdom);
3317: if ($chome ne 'no_host') {
3318: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3319: &extract_lastaccess(\%returnhash,$rep);
3320: }
3321: } else {
3322: if (!$cdom) { $cdom=''; }
3323: my %libserv = &all_library();
3324: foreach my $tryserver (keys(%libserv)) {
3325: if (ref($hostidref) eq 'ARRAY') {
3326: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3327: }
3328: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3329: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3330: &extract_lastaccess(\%returnhash,$rep);
3331: }
3332: }
3333: }
3334: return %returnhash;
3335: }
3336:
3337: sub extract_lastaccess {
3338: my ($returnhash,$rep) = @_;
3339: if (ref($returnhash) eq 'HASH') {
3340: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3341: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3342: $rep eq '') {
3343: my @pairs=split(/\&/,$rep);
3344: foreach my $item (@pairs) {
3345: my ($key,$value)=split(/\=/,$item,2);
3346: $key = &unescape($key);
3347: next if ($key =~ /^error: 2 /);
3348: $returnhash->{$key} = &thaw_unescape($value);
3349: }
3350: }
3351: }
3352: return;
3353: }
3354:
3355: # ---------------------------------------------------------- DC e-mail
3356:
3357: sub dcmailput {
3358: my ($domain,$msgid,$message,$server)=@_;
3359: my $status = &Apache::lonnet::critical(
3360: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3361: &escape($message),$server);
3362: return $status;
3363: }
3364:
3365: sub dcmaildump {
3366: my ($dom,$startdate,$enddate,$senders) = @_;
3367: my %returnhash=();
3368:
3369: if (defined(&domain($dom,'primary'))) {
3370: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3371: &escape($enddate).':';
3372: my @esc_senders=map { &escape($_)} @$senders;
3373: $cmd.=&escape(join('&',@esc_senders));
3374: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3375: my ($key,$value) = split(/\=/,$line,2);
3376: if (($key) && ($value)) {
3377: $returnhash{&unescape($key)} = &unescape($value);
3378: }
3379: }
3380: }
3381: return %returnhash;
3382: }
3383: # ---------------------------------------------------------- Domain roles
3384:
3385: sub get_domain_roles {
3386: my ($dom,$roles,$startdate,$enddate)=@_;
3387: if ((!defined($startdate)) || ($startdate eq '')) {
3388: $startdate = '.';
3389: }
3390: if ((!defined($enddate)) || ($enddate eq '')) {
3391: $enddate = '.';
3392: }
3393: my $rolelist;
3394: if (ref($roles) eq 'ARRAY') {
3395: $rolelist = join(':',@{$roles});
3396: }
3397: my %personnel = ();
3398:
3399: my %servers = &get_servers($dom,'library');
3400: foreach my $tryserver (keys(%servers)) {
3401: %{$personnel{$tryserver}}=();
3402: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3403: &escape($startdate).':'.
3404: &escape($enddate).':'.
3405: &escape($rolelist), $tryserver))) {
3406: my ($key,$value) = split(/\=/,$line,2);
3407: if (($key) && ($value)) {
3408: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3409: }
3410: }
3411: }
3412: return %personnel;
3413: }
3414:
3415: # ----------------------------------------------------------- Interval timing
3416:
3417: sub get_first_access {
3418: my ($type,$argsymb)=@_;
3419: my ($symb,$courseid,$udom,$uname)=&whichuser();
3420: if ($argsymb) { $symb=$argsymb; }
3421: my ($map,$id,$res)=&decode_symb($symb);
3422: if ($type eq 'course') {
3423: $res='course';
3424: } elsif ($type eq 'map') {
3425: $res=&symbread($map);
3426: } else {
3427: $res=$symb;
3428: }
3429: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3430: return $times{"$courseid\0$res"};
3431: }
3432:
3433: sub set_first_access {
3434: my ($type)=@_;
3435: my ($symb,$courseid,$udom,$uname)=&whichuser();
3436: my ($map,$id,$res)=&decode_symb($symb);
3437: if ($type eq 'course') {
3438: $res='course';
3439: } elsif ($type eq 'map') {
3440: $res=&symbread($map);
3441: } else {
3442: $res=$symb;
3443: }
3444: my $firstaccess=&get_first_access($type,$symb);
3445: if (!$firstaccess) {
3446: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3447: }
3448: return 'already_set';
3449: }
3450:
3451: # --------------------------------------------- Set Expire Date for Spreadsheet
3452:
3453: sub expirespread {
3454: my ($uname,$udom,$stype,$usymb)=@_;
3455: my $cid=$env{'request.course.id'};
3456: if ($cid) {
3457: my $now=time;
3458: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3459: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3460: $env{'course.'.$cid.'.num'}.
3461: ':nohist_expirationdates:'.
3462: &escape($key).'='.$now,
3463: $env{'course.'.$cid.'.home'})
3464: }
3465: return 'ok';
3466: }
3467:
3468: # ----------------------------------------------------- Devalidate Spreadsheets
3469:
3470: sub devalidate {
3471: my ($symb,$uname,$udom)=@_;
3472: my $cid=$env{'request.course.id'};
3473: if ($cid) {
3474: # delete the stored spreadsheets for
3475: # - the student level sheet of this user in course's homespace
3476: # - the assessment level sheet for this resource
3477: # for this user in user's homespace
3478: # - current conditional state info
3479: my $key=$uname.':'.$udom.':';
3480: my $status=
3481: &del('nohist_calculatedsheets',
3482: [$key.'studentcalc:'],
3483: $env{'course.'.$cid.'.domain'},
3484: $env{'course.'.$cid.'.num'})
3485: .' '.
3486: &del('nohist_calculatedsheets_'.$cid,
3487: [$key.'assesscalc:'.$symb],$udom,$uname);
3488: unless ($status eq 'ok ok') {
3489: &logthis('Could not devalidate spreadsheet '.
3490: $uname.' at '.$udom.' for '.
3491: $symb.': '.$status);
3492: }
3493: &delenv('user.state.'.$cid);
3494: }
3495: }
3496:
3497: sub get_scalar {
3498: my ($string,$end) = @_;
3499: my $value;
3500: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3501: $value = $1;
3502: } elsif ($$string =~ s/^([^&]*?)&//) {
3503: $value = $1;
3504: }
3505: return &unescape($value);
3506: }
3507:
3508: sub array2str {
3509: my (@array) = @_;
3510: my $result=&arrayref2str(\@array);
3511: $result=~s/^__ARRAY_REF__//;
3512: $result=~s/__END_ARRAY_REF__$//;
3513: return $result;
3514: }
3515:
3516: sub arrayref2str {
3517: my ($arrayref) = @_;
3518: my $result='__ARRAY_REF__';
3519: foreach my $elem (@$arrayref) {
3520: if(ref($elem) eq 'ARRAY') {
3521: $result.=&arrayref2str($elem).'&';
3522: } elsif(ref($elem) eq 'HASH') {
3523: $result.=&hashref2str($elem).'&';
3524: } elsif(ref($elem)) {
3525: #print("Got a ref of ".(ref($elem))." skipping.");
3526: } else {
3527: $result.=&escape($elem).'&';
3528: }
3529: }
3530: $result=~s/\&$//;
3531: $result .= '__END_ARRAY_REF__';
3532: return $result;
3533: }
3534:
3535: sub hash2str {
3536: my (%hash) = @_;
3537: my $result=&hashref2str(\%hash);
3538: $result=~s/^__HASH_REF__//;
3539: $result=~s/__END_HASH_REF__$//;
3540: return $result;
3541: }
3542:
3543: sub hashref2str {
3544: my ($hashref)=@_;
3545: my $result='__HASH_REF__';
3546: foreach my $key (sort(keys(%$hashref))) {
3547: if (ref($key) eq 'ARRAY') {
3548: $result.=&arrayref2str($key).'=';
3549: } elsif (ref($key) eq 'HASH') {
3550: $result.=&hashref2str($key).'=';
3551: } elsif (ref($key)) {
3552: $result.='=';
3553: #print("Got a ref of ".(ref($key))." skipping.");
3554: } else {
3555: if ($key) {$result.=&escape($key).'=';} else { last; }
3556: }
3557:
3558: if(ref($hashref->{$key}) eq 'ARRAY') {
3559: $result.=&arrayref2str($hashref->{$key}).'&';
3560: } elsif(ref($hashref->{$key}) eq 'HASH') {
3561: $result.=&hashref2str($hashref->{$key}).'&';
3562: } elsif(ref($hashref->{$key})) {
3563: $result.='&';
3564: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3565: } else {
3566: $result.=&escape($hashref->{$key}).'&';
3567: }
3568: }
3569: $result=~s/\&$//;
3570: $result .= '__END_HASH_REF__';
3571: return $result;
3572: }
3573:
3574: sub str2hash {
3575: my ($string)=@_;
3576: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3577: return %$hash;
3578: }
3579:
3580: sub str2hashref {
3581: my ($string) = @_;
3582:
3583: my %hash;
3584:
3585: if($string !~ /^__HASH_REF__/) {
3586: if (! ($string eq '' || !defined($string))) {
3587: $hash{'error'}='Not hash reference';
3588: }
3589: return (\%hash, $string);
3590: }
3591:
3592: $string =~ s/^__HASH_REF__//;
3593:
3594: while($string !~ /^__END_HASH_REF__/) {
3595: #key
3596: my $key='';
3597: if($string =~ /^__HASH_REF__/) {
3598: ($key, $string)=&str2hashref($string);
3599: if(defined($key->{'error'})) {
3600: $hash{'error'}='Bad data';
3601: return (\%hash, $string);
3602: }
3603: } elsif($string =~ /^__ARRAY_REF__/) {
3604: ($key, $string)=&str2arrayref($string);
3605: if($key->[0] eq 'Array reference error') {
3606: $hash{'error'}='Bad data';
3607: return (\%hash, $string);
3608: }
3609: } else {
3610: $string =~ s/^(.*?)=//;
3611: $key=&unescape($1);
3612: }
3613: $string =~ s/^=//;
3614:
3615: #value
3616: my $value='';
3617: if($string =~ /^__HASH_REF__/) {
3618: ($value, $string)=&str2hashref($string);
3619: if(defined($value->{'error'})) {
3620: $hash{'error'}='Bad data';
3621: return (\%hash, $string);
3622: }
3623: } elsif($string =~ /^__ARRAY_REF__/) {
3624: ($value, $string)=&str2arrayref($string);
3625: if($value->[0] eq 'Array reference error') {
3626: $hash{'error'}='Bad data';
3627: return (\%hash, $string);
3628: }
3629: } else {
3630: $value=&get_scalar(\$string,'__END_HASH_REF__');
3631: }
3632: $string =~ s/^&//;
3633:
3634: $hash{$key}=$value;
3635: }
3636:
3637: $string =~ s/^__END_HASH_REF__//;
3638:
3639: return (\%hash, $string);
3640: }
3641:
3642: sub str2array {
3643: my ($string)=@_;
3644: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3645: return @$array;
3646: }
3647:
3648: sub str2arrayref {
3649: my ($string) = @_;
3650: my @array;
3651:
3652: if($string !~ /^__ARRAY_REF__/) {
3653: if (! ($string eq '' || !defined($string))) {
3654: $array[0]='Array reference error';
3655: }
3656: return (\@array, $string);
3657: }
3658:
3659: $string =~ s/^__ARRAY_REF__//;
3660:
3661: while($string !~ /^__END_ARRAY_REF__/) {
3662: my $value='';
3663: if($string =~ /^__HASH_REF__/) {
3664: ($value, $string)=&str2hashref($string);
3665: if(defined($value->{'error'})) {
3666: $array[0] ='Array reference error';
3667: return (\@array, $string);
3668: }
3669: } elsif($string =~ /^__ARRAY_REF__/) {
3670: ($value, $string)=&str2arrayref($string);
3671: if($value->[0] eq 'Array reference error') {
3672: $array[0] ='Array reference error';
3673: return (\@array, $string);
3674: }
3675: } else {
3676: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3677: }
3678: $string =~ s/^&//;
3679:
3680: push(@array, $value);
3681: }
3682:
3683: $string =~ s/^__END_ARRAY_REF__//;
3684:
3685: return (\@array, $string);
3686: }
3687:
3688: # -------------------------------------------------------------------Temp Store
3689:
3690: sub tmpreset {
3691: my ($symb,$namespace,$domain,$stuname) = @_;
3692: if (!$symb) {
3693: $symb=&symbread();
3694: if (!$symb) { $symb= $env{'request.url'}; }
3695: }
3696: $symb=escape($symb);
3697:
3698: if (!$namespace) { $namespace=$env{'request.state'}; }
3699: $namespace=~s/\//\_/g;
3700: $namespace=~s/\W//g;
3701:
3702: if (!$domain) { $domain=$env{'user.domain'}; }
3703: if (!$stuname) { $stuname=$env{'user.name'}; }
3704: if ($domain eq 'public' && $stuname eq 'public') {
3705: $stuname=$ENV{'REMOTE_ADDR'};
3706: }
3707: my $path=$perlvar{'lonDaemons'}.'/tmp';
3708: my %hash;
3709: if (tie(%hash,'GDBM_File',
3710: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3711: &GDBM_WRCREAT(),0640)) {
3712: foreach my $key (keys(%hash)) {
3713: if ($key=~ /:$symb/) {
3714: delete($hash{$key});
3715: }
3716: }
3717: }
3718: }
3719:
3720: sub tmpstore {
3721: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3722:
3723: if (!$symb) {
3724: $symb=&symbread();
3725: if (!$symb) { $symb= $env{'request.url'}; }
3726: }
3727: $symb=escape($symb);
3728:
3729: if (!$namespace) {
3730: # I don't think we would ever want to store this for a course.
3731: # it seems this will only be used if we don't have a course.
3732: #$namespace=$env{'request.course.id'};
3733: #if (!$namespace) {
3734: $namespace=$env{'request.state'};
3735: #}
3736: }
3737: $namespace=~s/\//\_/g;
3738: $namespace=~s/\W//g;
3739: if (!$domain) { $domain=$env{'user.domain'}; }
3740: if (!$stuname) { $stuname=$env{'user.name'}; }
3741: if ($domain eq 'public' && $stuname eq 'public') {
3742: $stuname=$ENV{'REMOTE_ADDR'};
3743: }
3744: my $now=time;
3745: my %hash;
3746: my $path=$perlvar{'lonDaemons'}.'/tmp';
3747: if (tie(%hash,'GDBM_File',
3748: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3749: &GDBM_WRCREAT(),0640)) {
3750: $hash{"version:$symb"}++;
3751: my $version=$hash{"version:$symb"};
3752: my $allkeys='';
3753: foreach my $key (keys(%$storehash)) {
3754: $allkeys.=$key.':';
3755: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3756: }
3757: $hash{"$version:$symb:timestamp"}=$now;
3758: $allkeys.='timestamp';
3759: $hash{"$version:keys:$symb"}=$allkeys;
3760: if (untie(%hash)) {
3761: return 'ok';
3762: } else {
3763: return "error:$!";
3764: }
3765: } else {
3766: return "error:$!";
3767: }
3768: }
3769:
3770: # -----------------------------------------------------------------Temp Restore
3771:
3772: sub tmprestore {
3773: my ($symb,$namespace,$domain,$stuname) = @_;
3774:
3775: if (!$symb) {
3776: $symb=&symbread();
3777: if (!$symb) { $symb= $env{'request.url'}; }
3778: }
3779: $symb=escape($symb);
3780:
3781: if (!$namespace) { $namespace=$env{'request.state'}; }
3782:
3783: if (!$domain) { $domain=$env{'user.domain'}; }
3784: if (!$stuname) { $stuname=$env{'user.name'}; }
3785: if ($domain eq 'public' && $stuname eq 'public') {
3786: $stuname=$ENV{'REMOTE_ADDR'};
3787: }
3788: my %returnhash;
3789: $namespace=~s/\//\_/g;
3790: $namespace=~s/\W//g;
3791: my %hash;
3792: my $path=$perlvar{'lonDaemons'}.'/tmp';
3793: if (tie(%hash,'GDBM_File',
3794: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3795: &GDBM_READER(),0640)) {
3796: my $version=$hash{"version:$symb"};
3797: $returnhash{'version'}=$version;
3798: my $scope;
3799: for ($scope=1;$scope<=$version;$scope++) {
3800: my $vkeys=$hash{"$scope:keys:$symb"};
3801: my @keys=split(/:/,$vkeys);
3802: my $key;
3803: $returnhash{"$scope:keys"}=$vkeys;
3804: foreach $key (@keys) {
3805: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3806: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3807: }
3808: }
3809: if (!(untie(%hash))) {
3810: return "error:$!";
3811: }
3812: } else {
3813: return "error:$!";
3814: }
3815: return %returnhash;
3816: }
3817:
3818: # ----------------------------------------------------------------------- Store
3819:
3820: sub store {
3821: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3822: my $home='';
3823:
3824: if ($stuname) { $home=&homeserver($stuname,$domain); }
3825:
3826: $symb=&symbclean($symb);
3827: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3828:
3829: if (!$domain) { $domain=$env{'user.domain'}; }
3830: if (!$stuname) { $stuname=$env{'user.name'}; }
3831:
3832: &devalidate($symb,$stuname,$domain);
3833:
3834: $symb=escape($symb);
3835: if (!$namespace) {
3836: unless ($namespace=$env{'request.course.id'}) {
3837: return '';
3838: }
3839: }
3840: if (!$home) { $home=$env{'user.home'}; }
3841:
3842: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3843: $$storehash{'host'}=$perlvar{'lonHostID'};
3844:
3845: my $namevalue='';
3846: foreach my $key (keys(%$storehash)) {
3847: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3848: }
3849: $namevalue=~s/\&$//;
3850: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3851: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3852: }
3853:
3854: # -------------------------------------------------------------- Critical Store
3855:
3856: sub cstore {
3857: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3858: my $home='';
3859:
3860: if ($stuname) { $home=&homeserver($stuname,$domain); }
3861:
3862: $symb=&symbclean($symb);
3863: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3864:
3865: if (!$domain) { $domain=$env{'user.domain'}; }
3866: if (!$stuname) { $stuname=$env{'user.name'}; }
3867:
3868: &devalidate($symb,$stuname,$domain);
3869:
3870: $symb=escape($symb);
3871: if (!$namespace) {
3872: unless ($namespace=$env{'request.course.id'}) {
3873: return '';
3874: }
3875: }
3876: if (!$home) { $home=$env{'user.home'}; }
3877:
3878: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3879: $$storehash{'host'}=$perlvar{'lonHostID'};
3880:
3881: my $namevalue='';
3882: foreach my $key (keys(%$storehash)) {
3883: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3884: }
3885: $namevalue=~s/\&$//;
3886: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3887: return critical
3888: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3889: }
3890:
3891: # --------------------------------------------------------------------- Restore
3892:
3893: sub restore {
3894: my ($symb,$namespace,$domain,$stuname) = @_;
3895: my $home='';
3896:
3897: if ($stuname) { $home=&homeserver($stuname,$domain); }
3898:
3899: if (!$symb) {
3900: unless ($symb=escape(&symbread())) { return ''; }
3901: } else {
3902: $symb=&escape(&symbclean($symb));
3903: }
3904: if (!$namespace) {
3905: unless ($namespace=$env{'request.course.id'}) {
3906: return '';
3907: }
3908: }
3909: if (!$domain) { $domain=$env{'user.domain'}; }
3910: if (!$stuname) { $stuname=$env{'user.name'}; }
3911: if (!$home) { $home=$env{'user.home'}; }
3912: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3913:
3914: my %returnhash=();
3915: foreach my $line (split(/\&/,$answer)) {
3916: my ($name,$value)=split(/\=/,$line);
3917: $returnhash{&unescape($name)}=&thaw_unescape($value);
3918: }
3919: my $version;
3920: for ($version=1;$version<=$returnhash{'version'};$version++) {
3921: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3922: $returnhash{$item}=$returnhash{$version.':'.$item};
3923: }
3924: }
3925: return %returnhash;
3926: }
3927:
3928: # ---------------------------------------------------------- Course Description
3929:
3930: sub coursedescription {
3931: my ($courseid,$args)=@_;
3932: $courseid=~s/^\///;
3933: $courseid=~s/\_/\//g;
3934: my ($cdomain,$cnum)=split(/\//,$courseid);
3935: my $chome=&homeserver($cnum,$cdomain);
3936: my $normalid=$cdomain.'_'.$cnum;
3937: # need to always cache even if we get errors otherwise we keep
3938: # trying and trying and trying to get the course description.
3939: my %envhash=();
3940: my %returnhash=();
3941:
3942: my $expiretime=600;
3943: if ($env{'request.course.id'} eq $normalid) {
3944: $expiretime=120;
3945: }
3946:
3947: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3948: if (!$args->{'freshen_cache'}
3949: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3950: foreach my $key (keys(%env)) {
3951: next if ($key !~ /^\Q$prefix\E(.*)/);
3952: my ($setting) = $1;
3953: $returnhash{$setting} = $env{$key};
3954: }
3955: return %returnhash;
3956: }
3957:
3958: # get the data agin
3959: if (!$args->{'one_time'}) {
3960: $envhash{'course.'.$normalid.'.last_cache'}=time;
3961: }
3962:
3963: if ($chome ne 'no_host') {
3964: %returnhash=&dump('environment',$cdomain,$cnum);
3965: if (!exists($returnhash{'con_lost'})) {
3966: $returnhash{'home'}= $chome;
3967: $returnhash{'domain'} = $cdomain;
3968: $returnhash{'num'} = $cnum;
3969: if (!defined($returnhash{'type'})) {
3970: $returnhash{'type'} = 'Course';
3971: }
3972: while (my ($name,$value) = each %returnhash) {
3973: $envhash{'course.'.$normalid.'.'.$name}=$value;
3974: }
3975: $returnhash{'url'}=&clutter($returnhash{'url'});
3976: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3977: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3978: $envhash{'course.'.$normalid.'.home'}=$chome;
3979: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3980: $envhash{'course.'.$normalid.'.num'}=$cnum;
3981: }
3982: }
3983: if (!$args->{'one_time'}) {
3984: &appenv(\%envhash);
3985: }
3986: return %returnhash;
3987: }
3988:
3989: sub update_released_required {
3990: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
3991: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
3992: $cid = $env{'request.course.id'};
3993: $cdom = $env{'course.'.$cid.'.domain'};
3994: $cnum = $env{'course.'.$cid.'.num'};
3995: $chome = $env{'course.'.$cid.'.home'};
3996: }
3997: if ($needsrelease) {
3998: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
3999: my $needsupdate;
4000: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4001: $needsupdate = 1;
4002: } else {
4003: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4004: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4005: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4006: $needsupdate = 1;
4007: }
4008: }
4009: if ($needsupdate) {
4010: my %needshash = (
4011: 'internal.releaserequired' => $needsrelease,
4012: );
4013: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4014: if ($putresult eq 'ok') {
4015: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4016: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4017: if (ref($crsinfo{$cid}) eq 'HASH') {
4018: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4019: &courseidput($cdom,\%crsinfo,$chome,'notime');
4020: }
4021: }
4022: }
4023: }
4024: return;
4025: }
4026:
4027: # -------------------------------------------------See if a user is privileged
4028:
4029: sub privileged {
4030: my ($username,$domain)=@_;
4031: my $rolesdump=&reply("dump:$domain:$username:roles",
4032: &homeserver($username,$domain));
4033: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4034: ($rolesdump =~ /^error:/)) {
4035: return 0;
4036: }
4037: my $now=time;
4038: if ($rolesdump ne '') {
4039: foreach my $entry (split(/&/,$rolesdump)) {
4040: if ($entry!~/^rolesdef_/) {
4041: my ($area,$role)=split(/=/,$entry);
4042: $area=~s/\_\w\w$//;
4043: my ($trole,$tend,$tstart)=split(/_/,$role);
4044: if (($trole eq 'dc') || ($trole eq 'su')) {
4045: my $active=1;
4046: if ($tend) {
4047: if ($tend<$now) { $active=0; }
4048: }
4049: if ($tstart) {
4050: if ($tstart>$now) { $active=0; }
4051: }
4052: if ($active) { return 1; }
4053: }
4054: }
4055: }
4056: }
4057: return 0;
4058: }
4059:
4060: # -------------------------------------------------------- Get user privileges
4061:
4062: sub rolesinit {
4063: my ($domain,$username,$authhost)=@_;
4064: my $now=time;
4065: my %userroles = ('user.login.time' => $now);
4066: my $extra = &freeze_escape({'skipcheck' => 1});
4067: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4068: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4069: ($rolesdump =~ /^error:/)) {
4070: return \%userroles;
4071: }
4072: my %allroles=();
4073: my %allgroups=();
4074: my $group_privs;
4075:
4076: if ($rolesdump ne '') {
4077: foreach my $entry (split(/&/,$rolesdump)) {
4078: if ($entry!~/^rolesdef_/) {
4079: my ($area,$role)=split(/=/,$entry);
4080: $area=~s/\_\w\w$//;
4081: my ($trole,$tend,$tstart,$group_privs);
4082: if ($role=~/^cr/) {
4083: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4084: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4085: ($tend,$tstart)=split('_',$trest);
4086: } else {
4087: $trole=$role;
4088: }
4089: } elsif ($role =~ m|^gr/|) {
4090: ($trole,$tend,$tstart) = split(/_/,$role);
4091: ($trole,$group_privs) = split(/\//,$trole);
4092: $group_privs = &unescape($group_privs);
4093: } else {
4094: ($trole,$tend,$tstart)=split(/_/,$role);
4095: }
4096: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4097: $username);
4098: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4099: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4100: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4101: if (($area ne '') && ($trole ne '')) {
4102: my $spec=$trole.'.'.$area;
4103: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4104: if ($trole =~ /^cr\//) {
4105: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4106: } elsif ($trole eq 'gr') {
4107: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4108: } else {
4109: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4110: }
4111: }
4112: }
4113: }
4114: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4115: $userroles{'user.adv'} = $adv;
4116: $userroles{'user.author'} = $author;
4117: $env{'user.adv'}=$adv;
4118: }
4119: return \%userroles;
4120: }
4121:
4122: sub set_arearole {
4123: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4124: # log the associated role with the area
4125: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4126: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4127: }
4128:
4129: sub custom_roleprivs {
4130: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4131: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4132: my $homsvr=homeserver($rauthor,$rdomain);
4133: if (&hostname($homsvr) ne '') {
4134: my ($rdummy,$roledef)=
4135: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4136: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4137: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4138: if (defined($syspriv)) {
4139: if ($trest =~ /^$match_community$/) {
4140: $syspriv =~ s/bre\&S//;
4141: }
4142: $$allroles{'cm./'}.=':'.$syspriv;
4143: $$allroles{$spec.'./'}.=':'.$syspriv;
4144: }
4145: if ($tdomain ne '') {
4146: if (defined($dompriv)) {
4147: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4148: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4149: }
4150: if (($trest ne '') && (defined($coursepriv))) {
4151: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4152: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4153: }
4154: }
4155: }
4156: }
4157: }
4158:
4159: sub group_roleprivs {
4160: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4161: my $access = 1;
4162: my $now = time;
4163: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4164: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4165: if ($access) {
4166: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4167: $$allgroups{$course}{$group} .=':'.$group_privs;
4168: }
4169: }
4170:
4171: sub standard_roleprivs {
4172: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4173: if (defined($pr{$trole.':s'})) {
4174: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4175: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4176: }
4177: if ($tdomain ne '') {
4178: if (defined($pr{$trole.':d'})) {
4179: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4180: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4181: }
4182: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4183: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4184: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4185: }
4186: }
4187: }
4188:
4189: sub set_userprivs {
4190: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4191: my $author=0;
4192: my $adv=0;
4193: my %grouproles = ();
4194: if (keys(%{$allgroups}) > 0) {
4195: my @groupkeys;
4196: foreach my $role (keys(%{$allroles})) {
4197: push(@groupkeys,$role);
4198: }
4199: if (ref($groups_roles) eq 'HASH') {
4200: foreach my $key (keys(%{$groups_roles})) {
4201: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4202: push(@groupkeys,$key);
4203: }
4204: }
4205: }
4206: if (@groupkeys > 0) {
4207: foreach my $role (@groupkeys) {
4208: my ($trole,$area,$sec,$extendedarea);
4209: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4210: $trole = $1;
4211: $area = $2;
4212: $sec = $3;
4213: $extendedarea = $area.$sec;
4214: if (exists($$allgroups{$area})) {
4215: foreach my $group (keys(%{$$allgroups{$area}})) {
4216: my $spec = $trole.'.'.$extendedarea;
4217: $grouproles{$spec.'.'.$area.'/'.$group} =
4218: $$allgroups{$area}{$group};
4219: }
4220: }
4221: }
4222: }
4223: }
4224: }
4225: foreach my $group (keys(%grouproles)) {
4226: $$allroles{$group} = $grouproles{$group};
4227: }
4228: foreach my $role (keys(%{$allroles})) {
4229: my %thesepriv;
4230: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4231: foreach my $item (split(/:/,$$allroles{$role})) {
4232: if ($item ne '') {
4233: my ($privilege,$restrictions)=split(/&/,$item);
4234: if ($restrictions eq '') {
4235: $thesepriv{$privilege}='F';
4236: } elsif ($thesepriv{$privilege} ne 'F') {
4237: $thesepriv{$privilege}.=$restrictions;
4238: }
4239: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4240: }
4241: }
4242: my $thesestr='';
4243: foreach my $priv (keys(%thesepriv)) {
4244: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4245: }
4246: $userroles->{'user.priv.'.$role} = $thesestr;
4247: }
4248: return ($author,$adv);
4249: }
4250:
4251: sub role_status {
4252: my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4253: my @pwhere = ();
4254: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4255: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4256: unless (!defined($$role) || $$role eq '') {
4257: $$where=join('.',@pwhere);
4258: $$trolecode=$$role.'.'.$$where;
4259: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4260: $$tstatus='is';
4261: if ($$tstart && $$tstart>$then) {
4262: $$tstatus='future';
4263: if ($$tstart<$now) {
4264: if ($$tstart && $$tstart>$refresh) {
4265: if (($$where ne '') && ($$role ne '')) {
4266: my (%allroles,%allgroups,$group_privs,
4267: %groups_roles,@rolecodes);
4268: my %userroles = (
4269: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4270: );
4271: @rolecodes = ('cm');
4272: my $spec=$$role.'.'.$$where;
4273: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4274: if ($$role =~ /^cr\//) {
4275: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4276: push(@rolecodes,'cr');
4277: } elsif ($$role eq 'gr') {
4278: push(@rolecodes,$$role);
4279: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4280: $env{'user.name'});
4281: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4282: (undef,my $group_privs) = split(/\//,$trole);
4283: $group_privs = &unescape($group_privs);
4284: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4285: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4286: if (keys(%course_roles) > 0) {
4287: my ($tnum) = ($trest =~ /^($match_courseid)/);
4288: if ($tdomain ne '' && $tnum ne '') {
4289: foreach my $key (keys(%course_roles)) {
4290: if ($key =~ /^\Q$tnum\E:\Q$tdomain\E:([^:]+):?([^:]*)/) {
4291: my $crsrole = $1;
4292: my $crssec = $2;
4293: if ($crsrole =~ /^cr/) {
4294: unless (grep(/^cr$/,@rolecodes)) {
4295: push(@rolecodes,'cr');
4296: }
4297: } else {
4298: unless(grep(/^\Q$crsrole\E$/,@rolecodes)) {
4299: push(@rolecodes,$crsrole);
4300: }
4301: }
4302: my $rolekey = $crsrole.'./'.$tdomain.'/'.$tnum;
4303: if ($crssec ne '') {
4304: $rolekey .= '/'.$crssec;
4305: }
4306: $rolekey .= './';
4307: $groups_roles{$rolekey} = \@rolecodes;
4308: }
4309: }
4310: }
4311: }
4312: } else {
4313: push(@rolecodes,$$role);
4314: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4315: }
4316: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4317: &appenv(\%userroles,\@rolecodes);
4318: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4319: }
4320: }
4321: $$tstatus = 'is';
4322: }
4323: }
4324: if ($$tend) {
4325: if ($$tend<$then) {
4326: $$tstatus='expired';
4327: } elsif ($$tend<$now) {
4328: $$tstatus='will_not';
4329: }
4330: }
4331: }
4332: }
4333: }
4334:
4335: sub check_adhoc_privs {
4336: my ($cdom,$cnum,$then,$refresh,$now,$checkrole,$caller) = @_;
4337: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4338: if ($env{$cckey}) {
4339: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4340: &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4341: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4342: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4343: }
4344: } else {
4345: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4346: }
4347: }
4348:
4349: sub set_adhoc_privileges {
4350: # role can be cc or ca
4351: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4352: my $area = '/'.$dcdom.'/'.$pickedcourse;
4353: my $spec = $role.'.'.$area;
4354: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4355: $env{'user.name'});
4356: my %ccrole = ();
4357: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4358: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4359: &appenv(\%userroles,[$role,'cm']);
4360: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4361: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
4362: &appenv( {'request.role' => $spec,
4363: 'request.role.domain' => $dcdom,
4364: 'request.course.sec' => ''
4365: }
4366: );
4367: my $tadv=0;
4368: if (&allowed('adv') eq 'F') { $tadv=1; }
4369: &appenv({'request.role.adv' => $tadv});
4370: }
4371: }
4372:
4373: # --------------------------------------------------------------- get interface
4374:
4375: sub get {
4376: my ($namespace,$storearr,$udomain,$uname)=@_;
4377: my $items='';
4378: foreach my $item (@$storearr) {
4379: $items.=&escape($item).'&';
4380: }
4381: $items=~s/\&$//;
4382: if (!$udomain) { $udomain=$env{'user.domain'}; }
4383: if (!$uname) { $uname=$env{'user.name'}; }
4384: my $uhome=&homeserver($uname,$udomain);
4385:
4386: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4387: my @pairs=split(/\&/,$rep);
4388: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4389: return @pairs;
4390: }
4391: my %returnhash=();
4392: my $i=0;
4393: foreach my $item (@$storearr) {
4394: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4395: $i++;
4396: }
4397: return %returnhash;
4398: }
4399:
4400: # --------------------------------------------------------------- del interface
4401:
4402: sub del {
4403: my ($namespace,$storearr,$udomain,$uname)=@_;
4404: my $items='';
4405: foreach my $item (@$storearr) {
4406: $items.=&escape($item).'&';
4407: }
4408:
4409: $items=~s/\&$//;
4410: if (!$udomain) { $udomain=$env{'user.domain'}; }
4411: if (!$uname) { $uname=$env{'user.name'}; }
4412: my $uhome=&homeserver($uname,$udomain);
4413: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4414: }
4415:
4416: # -------------------------------------------------------------- dump interface
4417:
4418: sub dump {
4419: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
4420: if (!$udomain) { $udomain=$env{'user.domain'}; }
4421: if (!$uname) { $uname=$env{'user.name'}; }
4422: my $uhome=&homeserver($uname,$udomain);
4423: if ($regexp) {
4424: $regexp=&escape($regexp);
4425: } else {
4426: $regexp='.';
4427: }
4428: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
4429: my @pairs=split(/\&/,$rep);
4430: my %returnhash=();
4431: foreach my $item (@pairs) {
4432: my ($key,$value)=split(/=/,$item,2);
4433: $key = &unescape($key);
4434: next if ($key =~ /^error: 2 /);
4435: $returnhash{$key}=&thaw_unescape($value);
4436: }
4437: return %returnhash;
4438: }
4439:
4440: # --------------------------------------------------------- dumpstore interface
4441:
4442: sub dumpstore {
4443: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4444: if (!$udomain) { $udomain=$env{'user.domain'}; }
4445: if (!$uname) { $uname=$env{'user.name'}; }
4446: my $uhome=&homeserver($uname,$udomain);
4447: if ($regexp) {
4448: $regexp=&escape($regexp);
4449: } else {
4450: $regexp='.';
4451: }
4452: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4453: my @pairs=split(/\&/,$rep);
4454: my %returnhash=();
4455: foreach my $item (@pairs) {
4456: my ($key,$value)=split(/=/,$item,2);
4457: next if ($key =~ /^error: 2 /);
4458: $returnhash{$key}=&thaw_unescape($value);
4459: }
4460: return %returnhash;
4461: }
4462:
4463: # -------------------------------------------------------------- keys interface
4464:
4465: sub getkeys {
4466: my ($namespace,$udomain,$uname)=@_;
4467: if (!$udomain) { $udomain=$env{'user.domain'}; }
4468: if (!$uname) { $uname=$env{'user.name'}; }
4469: my $uhome=&homeserver($uname,$udomain);
4470: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4471: my @keyarray=();
4472: foreach my $key (split(/\&/,$rep)) {
4473: next if ($key =~ /^error: 2 /);
4474: push(@keyarray,&unescape($key));
4475: }
4476: return @keyarray;
4477: }
4478:
4479: # --------------------------------------------------------------- currentdump
4480: sub currentdump {
4481: my ($courseid,$sdom,$sname)=@_;
4482: $courseid = $env{'request.course.id'} if (! defined($courseid));
4483: $sdom = $env{'user.domain'} if (! defined($sdom));
4484: $sname = $env{'user.name'} if (! defined($sname));
4485: my $uhome = &homeserver($sname,$sdom);
4486: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4487: return if ($rep =~ /^(error:|no_such_host)/);
4488: #
4489: my %returnhash=();
4490: #
4491: if ($rep eq "unknown_cmd") {
4492: # an old lond will not know currentdump
4493: # Do a dump and make it look like a currentdump
4494: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4495: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4496: my %hash = @tmp;
4497: @tmp=();
4498: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4499: } else {
4500: my @pairs=split(/\&/,$rep);
4501: foreach my $pair (@pairs) {
4502: my ($key,$value)=split(/=/,$pair,2);
4503: my ($symb,$param) = split(/:/,$key);
4504: $returnhash{&unescape($symb)}->{&unescape($param)} =
4505: &thaw_unescape($value);
4506: }
4507: }
4508: return %returnhash;
4509: }
4510:
4511: sub convert_dump_to_currentdump{
4512: my %hash = %{shift()};
4513: my %returnhash;
4514: # Code ripped from lond, essentially. The only difference
4515: # here is the unescaping done by lonnet::dump(). Conceivably
4516: # we might run in to problems with parameter names =~ /^v\./
4517: while (my ($key,$value) = each(%hash)) {
4518: my ($v,$symb,$param) = split(/:/,$key);
4519: $symb = &unescape($symb);
4520: $param = &unescape($param);
4521: next if ($v eq 'version' || $symb eq 'keys');
4522: next if (exists($returnhash{$symb}) &&
4523: exists($returnhash{$symb}->{$param}) &&
4524: $returnhash{$symb}->{'v.'.$param} > $v);
4525: $returnhash{$symb}->{$param}=$value;
4526: $returnhash{$symb}->{'v.'.$param}=$v;
4527: }
4528: #
4529: # Remove all of the keys in the hashes which keep track of
4530: # the version of the parameter.
4531: while (my ($symb,$param_hash) = each(%returnhash)) {
4532: # use a foreach because we are going to delete from the hash.
4533: foreach my $key (keys(%$param_hash)) {
4534: delete($param_hash->{$key}) if ($key =~ /^v\./);
4535: }
4536: }
4537: return \%returnhash;
4538: }
4539:
4540: # ------------------------------------------------------ critical inc interface
4541:
4542: sub cinc {
4543: return &inc(@_,'critical');
4544: }
4545:
4546: # --------------------------------------------------------------- inc interface
4547:
4548: sub inc {
4549: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4550: if (!$udomain) { $udomain=$env{'user.domain'}; }
4551: if (!$uname) { $uname=$env{'user.name'}; }
4552: my $uhome=&homeserver($uname,$udomain);
4553: my $items='';
4554: if (! ref($store)) {
4555: # got a single value, so use that instead
4556: $items = &escape($store).'=&';
4557: } elsif (ref($store) eq 'SCALAR') {
4558: $items = &escape($$store).'=&';
4559: } elsif (ref($store) eq 'ARRAY') {
4560: $items = join('=&',map {&escape($_);} @{$store});
4561: } elsif (ref($store) eq 'HASH') {
4562: while (my($key,$value) = each(%{$store})) {
4563: $items.= &escape($key).'='.&escape($value).'&';
4564: }
4565: }
4566: $items=~s/\&$//;
4567: if ($critical) {
4568: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4569: } else {
4570: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4571: }
4572: }
4573:
4574: # --------------------------------------------------------------- put interface
4575:
4576: sub put {
4577: my ($namespace,$storehash,$udomain,$uname)=@_;
4578: if (!$udomain) { $udomain=$env{'user.domain'}; }
4579: if (!$uname) { $uname=$env{'user.name'}; }
4580: my $uhome=&homeserver($uname,$udomain);
4581: my $items='';
4582: foreach my $item (keys(%$storehash)) {
4583: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4584: }
4585: $items=~s/\&$//;
4586: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4587: }
4588:
4589: # ------------------------------------------------------------ newput interface
4590:
4591: sub newput {
4592: my ($namespace,$storehash,$udomain,$uname)=@_;
4593: if (!$udomain) { $udomain=$env{'user.domain'}; }
4594: if (!$uname) { $uname=$env{'user.name'}; }
4595: my $uhome=&homeserver($uname,$udomain);
4596: my $items='';
4597: foreach my $key (keys(%$storehash)) {
4598: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4599: }
4600: $items=~s/\&$//;
4601: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4602: }
4603:
4604: # --------------------------------------------------------- putstore interface
4605:
4606: sub putstore {
4607: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4608: if (!$udomain) { $udomain=$env{'user.domain'}; }
4609: if (!$uname) { $uname=$env{'user.name'}; }
4610: my $uhome=&homeserver($uname,$udomain);
4611: my $items='';
4612: foreach my $key (keys(%$storehash)) {
4613: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4614: }
4615: $items=~s/\&$//;
4616: my $esc_symb=&escape($symb);
4617: my $esc_v=&escape($version);
4618: my $reply =
4619: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4620: $uhome);
4621: if ($reply eq 'unknown_cmd') {
4622: # gfall back to way things use to be done
4623: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4624: $uname);
4625: }
4626: return $reply;
4627: }
4628:
4629: sub old_putstore {
4630: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4631: if (!$udomain) { $udomain=$env{'user.domain'}; }
4632: if (!$uname) { $uname=$env{'user.name'}; }
4633: my $uhome=&homeserver($uname,$udomain);
4634: my %newstorehash;
4635: foreach my $item (keys(%$storehash)) {
4636: my $key = $version.':'.&escape($symb).':'.$item;
4637: $newstorehash{$key} = $storehash->{$item};
4638: }
4639: my $items='';
4640: my %allitems = ();
4641: foreach my $item (keys(%newstorehash)) {
4642: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4643: my $key = $1.':keys:'.$2;
4644: $allitems{$key} .= $3.':';
4645: }
4646: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4647: }
4648: foreach my $item (keys(%allitems)) {
4649: $allitems{$item} =~ s/\:$//;
4650: $items.= $item.'='.$allitems{$item}.'&';
4651: }
4652: $items=~s/\&$//;
4653: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4654: }
4655:
4656: # ------------------------------------------------------ critical put interface
4657:
4658: sub cput {
4659: my ($namespace,$storehash,$udomain,$uname)=@_;
4660: if (!$udomain) { $udomain=$env{'user.domain'}; }
4661: if (!$uname) { $uname=$env{'user.name'}; }
4662: my $uhome=&homeserver($uname,$udomain);
4663: my $items='';
4664: foreach my $item (keys(%$storehash)) {
4665: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4666: }
4667: $items=~s/\&$//;
4668: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4669: }
4670:
4671: # -------------------------------------------------------------- eget interface
4672:
4673: sub eget {
4674: my ($namespace,$storearr,$udomain,$uname)=@_;
4675: my $items='';
4676: foreach my $item (@$storearr) {
4677: $items.=&escape($item).'&';
4678: }
4679: $items=~s/\&$//;
4680: if (!$udomain) { $udomain=$env{'user.domain'}; }
4681: if (!$uname) { $uname=$env{'user.name'}; }
4682: my $uhome=&homeserver($uname,$udomain);
4683: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4684: my @pairs=split(/\&/,$rep);
4685: my %returnhash=();
4686: my $i=0;
4687: foreach my $item (@$storearr) {
4688: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4689: $i++;
4690: }
4691: return %returnhash;
4692: }
4693:
4694: # ------------------------------------------------------------ tmpput interface
4695: sub tmpput {
4696: my ($storehash,$server,$context)=@_;
4697: my $items='';
4698: foreach my $item (keys(%$storehash)) {
4699: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4700: }
4701: $items=~s/\&$//;
4702: if (defined($context)) {
4703: $items .= ':'.&escape($context);
4704: }
4705: return &reply("tmpput:$items",$server);
4706: }
4707:
4708: # ------------------------------------------------------------ tmpget interface
4709: sub tmpget {
4710: my ($token,$server)=@_;
4711: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4712: my $rep=&reply("tmpget:$token",$server);
4713: my %returnhash;
4714: foreach my $item (split(/\&/,$rep)) {
4715: my ($key,$value)=split(/=/,$item);
4716: next if ($key =~ /^error: 2 /);
4717: $returnhash{&unescape($key)}=&thaw_unescape($value);
4718: }
4719: return %returnhash;
4720: }
4721:
4722: # ------------------------------------------------------------ tmpget interface
4723: sub tmpdel {
4724: my ($token,$server)=@_;
4725: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4726: return &reply("tmpdel:$token",$server);
4727: }
4728:
4729: # -------------------------------------------------- portfolio access checking
4730:
4731: sub portfolio_access {
4732: my ($requrl) = @_;
4733: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4734: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4735: if ($result) {
4736: my %setters;
4737: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4738: my ($startblock,$endblock) =
4739: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4740: if ($startblock && $endblock) {
4741: return 'B';
4742: }
4743: } else {
4744: my ($startblock,$endblock) =
4745: &Apache::loncommon::blockcheck(\%setters,'port');
4746: if ($startblock && $endblock) {
4747: return 'B';
4748: }
4749: }
4750: }
4751: if ($result eq 'ok') {
4752: return 'F';
4753: } elsif ($result =~ /^[^:]+:guest_/) {
4754: return 'A';
4755: }
4756: return '';
4757: }
4758:
4759: sub get_portfolio_access {
4760: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4761:
4762: if (!ref($access_hash)) {
4763: my $current_perms = &get_portfile_permissions($udom,$unum);
4764: my %access_controls = &get_access_controls($current_perms,$group,
4765: $file_name);
4766: $access_hash = $access_controls{$file_name};
4767: }
4768:
4769: my ($public,$guest,@domains,@users,@courses,@groups);
4770: my $now = time;
4771: if (ref($access_hash) eq 'HASH') {
4772: foreach my $key (keys(%{$access_hash})) {
4773: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4774: if ($start > $now) {
4775: next;
4776: }
4777: if ($end && $end<$now) {
4778: next;
4779: }
4780: if ($scope eq 'public') {
4781: $public = $key;
4782: last;
4783: } elsif ($scope eq 'guest') {
4784: $guest = $key;
4785: } elsif ($scope eq 'domains') {
4786: push(@domains,$key);
4787: } elsif ($scope eq 'users') {
4788: push(@users,$key);
4789: } elsif ($scope eq 'course') {
4790: push(@courses,$key);
4791: } elsif ($scope eq 'group') {
4792: push(@groups,$key);
4793: }
4794: }
4795: if ($public) {
4796: return 'ok';
4797: }
4798: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4799: if ($guest) {
4800: return $guest;
4801: }
4802: } else {
4803: if (@domains > 0) {
4804: foreach my $domkey (@domains) {
4805: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4806: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4807: return 'ok';
4808: }
4809: }
4810: }
4811: }
4812: if (@users > 0) {
4813: foreach my $userkey (@users) {
4814: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4815: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4816: if (ref($item) eq 'HASH') {
4817: if (($item->{'uname'} eq $env{'user.name'}) &&
4818: ($item->{'udom'} eq $env{'user.domain'})) {
4819: return 'ok';
4820: }
4821: }
4822: }
4823: }
4824: }
4825: }
4826: my %roleshash;
4827: my @courses_and_groups = @courses;
4828: push(@courses_and_groups,@groups);
4829: if (@courses_and_groups > 0) {
4830: my (%allgroups,%allroles);
4831: my ($start,$end,$role,$sec,$group);
4832: foreach my $envkey (%env) {
4833: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4834: my $cid = $2.'_'.$3;
4835: if ($1 eq 'gr') {
4836: $group = $4;
4837: $allgroups{$cid}{$group} = $env{$envkey};
4838: } else {
4839: if ($4 eq '') {
4840: $sec = 'none';
4841: } else {
4842: $sec = $4;
4843: }
4844: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4845: }
4846: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4847: my $cid = $2.'_'.$3;
4848: if ($4 eq '') {
4849: $sec = 'none';
4850: } else {
4851: $sec = $4;
4852: }
4853: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4854: }
4855: }
4856: if (keys(%allroles) == 0) {
4857: return;
4858: }
4859: foreach my $key (@courses_and_groups) {
4860: my %content = %{$$access_hash{$key}};
4861: my $cnum = $content{'number'};
4862: my $cdom = $content{'domain'};
4863: my $cid = $cdom.'_'.$cnum;
4864: if (!exists($allroles{$cid})) {
4865: next;
4866: }
4867: foreach my $role_id (keys(%{$content{'roles'}})) {
4868: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4869: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4870: my @status = @{$content{'roles'}{$role_id}{'access'}};
4871: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4872: foreach my $role (keys(%{$allroles{$cid}})) {
4873: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4874: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4875: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4876: if (grep/^all$/,@sections) {
4877: return 'ok';
4878: } else {
4879: if (grep/^$sec$/,@sections) {
4880: return 'ok';
4881: }
4882: }
4883: }
4884: }
4885: if (keys(%{$allgroups{$cid}}) == 0) {
4886: if (grep/^none$/,@groups) {
4887: return 'ok';
4888: }
4889: } else {
4890: if (grep/^all$/,@groups) {
4891: return 'ok';
4892: }
4893: foreach my $group (keys(%{$allgroups{$cid}})) {
4894: if (grep/^$group$/,@groups) {
4895: return 'ok';
4896: }
4897: }
4898: }
4899: }
4900: }
4901: }
4902: }
4903: }
4904: if ($guest) {
4905: return $guest;
4906: }
4907: }
4908: }
4909: return;
4910: }
4911:
4912: sub course_group_datechecker {
4913: my ($dates,$now,$status) = @_;
4914: my ($start,$end) = split(/\./,$dates);
4915: if (!$start && !$end) {
4916: return 'ok';
4917: }
4918: if (grep/^active$/,@{$status}) {
4919: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4920: return 'ok';
4921: }
4922: }
4923: if (grep/^previous$/,@{$status}) {
4924: if ($end > $now ) {
4925: return 'ok';
4926: }
4927: }
4928: if (grep/^future$/,@{$status}) {
4929: if ($start > $now) {
4930: return 'ok';
4931: }
4932: }
4933: return;
4934: }
4935:
4936: sub parse_portfolio_url {
4937: my ($url) = @_;
4938:
4939: my ($type,$udom,$unum,$group,$file_name);
4940:
4941: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4942: $type = 1;
4943: $udom = $1;
4944: $unum = $2;
4945: $file_name = $3;
4946: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4947: $type = 2;
4948: $udom = $1;
4949: $unum = $2;
4950: $group = $3;
4951: $file_name = $3.'/'.$4;
4952: }
4953: if (wantarray) {
4954: return ($type,$udom,$unum,$file_name,$group);
4955: }
4956: return $type;
4957: }
4958:
4959: sub is_portfolio_url {
4960: my ($url) = @_;
4961: return scalar(&parse_portfolio_url($url));
4962: }
4963:
4964: sub is_portfolio_file {
4965: my ($file) = @_;
4966: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4967: return 1;
4968: }
4969: return;
4970: }
4971:
4972: sub usertools_access {
4973: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
4974: my ($access,%tools);
4975: if ($context eq '') {
4976: $context = 'tools';
4977: }
4978: if ($context eq 'requestcourses') {
4979: %tools = (
4980: official => 1,
4981: unofficial => 1,
4982: community => 1,
4983: );
4984: } else {
4985: %tools = (
4986: aboutme => 1,
4987: blog => 1,
4988: portfolio => 1,
4989: );
4990: }
4991: return if (!defined($tools{$tool}));
4992:
4993: if ((!defined($udom)) || (!defined($uname))) {
4994: $udom = $env{'user.domain'};
4995: $uname = $env{'user.name'};
4996: }
4997:
4998: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
4999: if ($action ne 'reload') {
5000: if ($context eq 'requestcourses') {
5001: return $env{'environment.canrequest.'.$tool};
5002: } else {
5003: return $env{'environment.availabletools.'.$tool};
5004: }
5005: }
5006: }
5007:
5008: my ($toolstatus,$inststatus);
5009:
5010: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5011: ($action ne 'reload')) {
5012: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5013: $inststatus = $env{'environment.inststatus'};
5014: } else {
5015: if (ref($userenvref) eq 'HASH') {
5016: $toolstatus = $userenvref->{$context.'.'.$tool};
5017: $inststatus = $userenvref->{'inststatus'};
5018: } else {
5019: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5020: $toolstatus = $userenv{$context.'.'.$tool};
5021: $inststatus = $userenv{'inststatus'};
5022: }
5023: }
5024:
5025: if ($toolstatus ne '') {
5026: if ($toolstatus) {
5027: $access = 1;
5028: } else {
5029: $access = 0;
5030: }
5031: return $access;
5032: }
5033:
5034: my ($is_adv,%domdef);
5035: if (ref($is_advref) eq 'HASH') {
5036: $is_adv = $is_advref->{'is_adv'};
5037: } else {
5038: $is_adv = &is_advanced_user($udom,$uname);
5039: }
5040: if (ref($domdefref) eq 'HASH') {
5041: %domdef = %{$domdefref};
5042: } else {
5043: %domdef = &get_domain_defaults($udom);
5044: }
5045: if (ref($domdef{$tool}) eq 'HASH') {
5046: if ($is_adv) {
5047: if ($domdef{$tool}{'_LC_adv'} ne '') {
5048: if ($domdef{$tool}{'_LC_adv'}) {
5049: $access = 1;
5050: } else {
5051: $access = 0;
5052: }
5053: return $access;
5054: }
5055: }
5056: if ($inststatus ne '') {
5057: my ($hasaccess,$hasnoaccess);
5058: foreach my $affiliation (split(/:/,$inststatus)) {
5059: if ($domdef{$tool}{$affiliation} ne '') {
5060: if ($domdef{$tool}{$affiliation}) {
5061: $hasaccess = 1;
5062: } else {
5063: $hasnoaccess = 1;
5064: }
5065: }
5066: }
5067: if ($hasaccess || $hasnoaccess) {
5068: if ($hasaccess) {
5069: $access = 1;
5070: } elsif ($hasnoaccess) {
5071: $access = 0;
5072: }
5073: return $access;
5074: }
5075: } else {
5076: if ($domdef{$tool}{'default'} ne '') {
5077: if ($domdef{$tool}{'default'}) {
5078: $access = 1;
5079: } elsif ($domdef{$tool}{'default'} == 0) {
5080: $access = 0;
5081: }
5082: return $access;
5083: }
5084: }
5085: } else {
5086: if ($context eq 'tools') {
5087: $access = 1;
5088: } else {
5089: $access = 0;
5090: }
5091: return $access;
5092: }
5093: }
5094:
5095: sub is_course_owner {
5096: my ($cdom,$cnum,$udom,$uname) = @_;
5097: if (($udom eq '') || ($uname eq '')) {
5098: $udom = $env{'user.domain'};
5099: $uname = $env{'user.name'};
5100: }
5101: unless (($udom eq '') || ($uname eq '')) {
5102: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5103: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5104: return 1;
5105: } else {
5106: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5107: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5108: return 1;
5109: }
5110: }
5111: }
5112: }
5113: return;
5114: }
5115:
5116: sub is_advanced_user {
5117: my ($udom,$uname) = @_;
5118: if ($udom ne '' && $uname ne '') {
5119: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5120: return $env{'user.adv'};
5121: }
5122: }
5123: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5124: my %allroles;
5125: my $is_adv;
5126: foreach my $role (keys(%roleshash)) {
5127: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5128: my $area = '/'.$tdomain.'/'.$trest;
5129: if ($sec ne '') {
5130: $area .= '/'.$sec;
5131: }
5132: if (($area ne '') && ($trole ne '')) {
5133: my $spec=$trole.'.'.$area;
5134: if ($trole =~ /^cr\//) {
5135: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5136: } elsif ($trole ne 'gr') {
5137: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5138: }
5139: }
5140: }
5141: foreach my $role (keys(%allroles)) {
5142: last if ($is_adv);
5143: foreach my $item (split(/:/,$allroles{$role})) {
5144: if ($item ne '') {
5145: my ($privilege,$restrictions)=split(/&/,$item);
5146: if ($privilege eq 'adv') {
5147: $is_adv = 1;
5148: last;
5149: }
5150: }
5151: }
5152: }
5153: return $is_adv;
5154: }
5155:
5156: sub check_can_request {
5157: my ($dom,$can_request,$request_domains) = @_;
5158: my $canreq = 0;
5159: my ($types,$typename) = &Apache::loncommon::course_types();
5160: my @options = ('approval','validate','autolimit');
5161: my $optregex = join('|',@options);
5162: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5163: foreach my $type (@{$types}) {
5164: if (&usertools_access($env{'user.name'},
5165: $env{'user.domain'},
5166: $type,undef,'requestcourses')) {
5167: $canreq ++;
5168: if (ref($request_domains) eq 'HASH') {
5169: push(@{$request_domains->{$type}},$env{'user.domain'});
5170: }
5171: if ($dom eq $env{'user.domain'}) {
5172: $can_request->{$type} = 1;
5173: }
5174: }
5175: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5176: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5177: if (@curr > 0) {
5178: foreach my $item (@curr) {
5179: if (ref($request_domains) eq 'HASH') {
5180: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5181: if ($otherdom ne '') {
5182: if (ref($request_domains->{$type}) eq 'ARRAY') {
5183: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5184: push(@{$request_domains->{$type}},$otherdom);
5185: }
5186: } else {
5187: push(@{$request_domains->{$type}},$otherdom);
5188: }
5189: }
5190: }
5191: }
5192: unless($dom eq $env{'user.domain'}) {
5193: $canreq ++;
5194: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5195: $can_request->{$type} = 1;
5196: }
5197: }
5198: }
5199: }
5200: }
5201: }
5202: return $canreq;
5203: }
5204:
5205: # ---------------------------------------------- Custom access rule evaluation
5206:
5207: sub customaccess {
5208: my ($priv,$uri)=@_;
5209: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5210: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5211: $udom = &LONCAPA::clean_domain($udom);
5212: $ucrs = &LONCAPA::clean_username($ucrs);
5213: my $access=0;
5214: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5215: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5216: if ($type eq 'user') {
5217: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5218: my ($tdom,$tuname)=split(m{/},$scope);
5219: if ($tdom) {
5220: if ($tdom ne $env{'user.domain'}) { next; }
5221: }
5222: if ($tuname) {
5223: if ($tuname ne $env{'user.name'}) { next; }
5224: }
5225: $access=($effect eq 'allow');
5226: last;
5227: }
5228: } else {
5229: if ($role) {
5230: if ($role ne $urole) { next; }
5231: }
5232: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5233: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5234: if ($tdom) {
5235: if ($tdom ne $udom) { next; }
5236: }
5237: if ($tcrs) {
5238: if ($tcrs ne $ucrs) { next; }
5239: }
5240: if ($tsec) {
5241: if ($tsec ne $usec) { next; }
5242: }
5243: $access=($effect eq 'allow');
5244: last;
5245: }
5246: if ($realm eq '' && $role eq '') {
5247: $access=($effect eq 'allow');
5248: }
5249: }
5250: }
5251: return $access;
5252: }
5253:
5254: # ------------------------------------------------- Check for a user privilege
5255:
5256: sub allowed {
5257: my ($priv,$uri,$symb,$role)=@_;
5258: my $ver_orguri=$uri;
5259: $uri=&deversion($uri);
5260: my $orguri=$uri;
5261: $uri=&declutter($uri);
5262:
5263: if ($priv eq 'evb') {
5264: # Evade communication block restrictions for specified role in a course
5265: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5266: return $1;
5267: } else {
5268: return;
5269: }
5270: }
5271:
5272: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5273: # Free bre access to adm and meta resources
5274: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5275: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5276: && ($priv eq 'bre')) {
5277: return 'F';
5278: }
5279:
5280: # Free bre access to user's own portfolio contents
5281: my ($space,$domain,$name,@dir)=split('/',$uri);
5282: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5283: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5284: my %setters;
5285: my ($startblock,$endblock) =
5286: &Apache::loncommon::blockcheck(\%setters,'port');
5287: if ($startblock && $endblock) {
5288: return 'B';
5289: } else {
5290: return 'F';
5291: }
5292: }
5293:
5294: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5295: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5296: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5297: if (exists($env{'request.course.id'})) {
5298: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5299: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5300: if (($domain eq $cdom) && ($name eq $cnum)) {
5301: my $courseprivid=$env{'request.course.id'};
5302: $courseprivid=~s/\_/\//;
5303: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5304: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5305: return $1;
5306: } else {
5307: if ($env{'request.course.sec'}) {
5308: $courseprivid.='/'.$env{'request.course.sec'};
5309: }
5310: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5311: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5312: return $2;
5313: }
5314: }
5315: }
5316: }
5317: }
5318:
5319: # Free bre to public access
5320:
5321: if ($priv eq 'bre') {
5322: my $copyright=&metadata($uri,'copyright');
5323: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5324: return 'F';
5325: }
5326: if ($copyright eq 'priv') {
5327: $uri=~/([^\/]+)\/([^\/]+)\//;
5328: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5329: return '';
5330: }
5331: }
5332: if ($copyright eq 'domain') {
5333: $uri=~/([^\/]+)\/([^\/]+)\//;
5334: unless (($env{'user.domain'} eq $1) ||
5335: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5336: return '';
5337: }
5338: }
5339: if ($env{'request.role'}=~ /li\.\//) {
5340: # Library role, so allow browsing of resources in this domain.
5341: return 'F';
5342: }
5343: if ($copyright eq 'custom') {
5344: unless (&customaccess($priv,$uri)) { return ''; }
5345: }
5346: }
5347: # Domain coordinator is trying to create a course
5348: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5349: # uri is the requested domain in this case.
5350: # comparison to 'request.role.domain' shows if the user has selected
5351: # a role of dc for the domain in question.
5352: return 'F' if ($uri eq $env{'request.role.domain'});
5353: }
5354:
5355: my $thisallowed='';
5356: my $statecond=0;
5357: my $courseprivid='';
5358:
5359: my $ownaccess;
5360: # Community Coordinator or Assistant Co-author browsing resource space.
5361: if (($priv eq 'bro') && ($env{'user.author'})) {
5362: if ($uri eq '') {
5363: $ownaccess = 1;
5364: } else {
5365: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5366: my $udom = $env{'user.domain'};
5367: my $uname = $env{'user.name'};
5368: if ($uri =~ m{^\Q$udom\E/?$}) {
5369: $ownaccess = 1;
5370: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5371: unless ($uri =~ m{\.\./}) {
5372: $ownaccess = 1;
5373: }
5374: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5375: my $now = time;
5376: if ($uri =~ m{^([^/]+)/?$}) {
5377: my $adom = $1;
5378: foreach my $key (keys(%env)) {
5379: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5380: my ($start,$end) = split('.',$env{$key});
5381: if (($now >= $start) && (!$end || $end < $now)) {
5382: $ownaccess = 1;
5383: last;
5384: }
5385: }
5386: }
5387: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5388: my $adom = $1;
5389: my $aname = $2;
5390: foreach my $role ('ca','aa') {
5391: if ($env{"user.role.$role./$adom/$aname"}) {
5392: my ($start,$end) =
5393: split('.',$env{"user.role.$role./$adom/$aname"});
5394: if (($now >= $start) && (!$end || $end < $now)) {
5395: $ownaccess = 1;
5396: last;
5397: }
5398: }
5399: }
5400: }
5401: }
5402: }
5403: }
5404: }
5405:
5406: # Course
5407:
5408: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5409: unless (($priv eq 'bro') && (!$ownaccess)) {
5410: $thisallowed.=$1;
5411: }
5412: }
5413:
5414: # Domain
5415:
5416: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5417: =~/\Q$priv\E\&([^\:]*)/) {
5418: unless (($priv eq 'bro') && (!$ownaccess)) {
5419: $thisallowed.=$1;
5420: }
5421: }
5422:
5423: # Course: uri itself is a course
5424: my $courseuri=$uri;
5425: $courseuri=~s/\_(\d)/\/$1/;
5426: $courseuri=~s/^([^\/])/\/$1/;
5427:
5428: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5429: =~/\Q$priv\E\&([^\:]*)/) {
5430: unless (($priv eq 'bro') && (!$ownaccess)) {
5431: $thisallowed.=$1;
5432: }
5433: }
5434:
5435: # URI is an uploaded document for this course, default permissions don't matter
5436: # not allowing 'edit' access (editupload) to uploaded course docs
5437: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5438: $thisallowed='';
5439: my ($match)=&is_on_map($uri);
5440: if ($match) {
5441: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5442: =~/\Q$priv\E\&([^\:]*)/) {
5443: $thisallowed.=$1;
5444: }
5445: } else {
5446: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5447: if ($refuri) {
5448: if ($refuri =~ m|^/adm/|) {
5449: $thisallowed='F';
5450: } else {
5451: $refuri=&declutter($refuri);
5452: my ($match) = &is_on_map($refuri);
5453: if ($match) {
5454: $thisallowed='F';
5455: }
5456: }
5457: }
5458: }
5459: }
5460:
5461: if ($priv eq 'bre'
5462: && $thisallowed ne 'F'
5463: && $thisallowed ne '2'
5464: && &is_portfolio_url($uri)) {
5465: $thisallowed = &portfolio_access($uri);
5466: }
5467:
5468: # Full access at system, domain or course-wide level? Exit.
5469: if ($thisallowed=~/F/) {
5470: return 'F';
5471: }
5472:
5473: # If this is generating or modifying users, exit with special codes
5474:
5475: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5476: if (($priv eq 'cca') || ($priv eq 'caa')) {
5477: my ($audom,$auname)=split('/',$uri);
5478: # no author name given, so this just checks on the general right to make a co-author in this domain
5479: unless ($auname) { return $thisallowed; }
5480: # an author name is given, so we are about to actually make a co-author for a certain account
5481: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5482: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5483: ($audom ne $env{'request.role.domain'}))) { return ''; }
5484: }
5485: return $thisallowed;
5486: }
5487: #
5488: # Gathered so far: system, domain and course wide privileges
5489: #
5490: # Course: See if uri or referer is an individual resource that is part of
5491: # the course
5492:
5493: if ($env{'request.course.id'}) {
5494:
5495: $courseprivid=$env{'request.course.id'};
5496: if ($env{'request.course.sec'}) {
5497: $courseprivid.='/'.$env{'request.course.sec'};
5498: }
5499: $courseprivid=~s/\_/\//;
5500: my $checkreferer=1;
5501: my ($match,$cond)=&is_on_map($uri);
5502: if ($match) {
5503: $statecond=$cond;
5504: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5505: =~/\Q$priv\E\&([^\:]*)/) {
5506: $thisallowed.=$1;
5507: $checkreferer=0;
5508: }
5509: }
5510:
5511: if ($checkreferer) {
5512: my $refuri=$env{'httpref.'.$orguri};
5513: unless ($refuri) {
5514: foreach my $key (keys(%env)) {
5515: if ($key=~/^httpref\..*\*/) {
5516: my $pattern=$key;
5517: $pattern=~s/^httpref\.\/res\///;
5518: $pattern=~s/\*/\[\^\/\]\+/g;
5519: $pattern=~s/\//\\\//g;
5520: if ($orguri=~/$pattern/) {
5521: $refuri=$env{$key};
5522: }
5523: }
5524: }
5525: }
5526:
5527: if ($refuri) {
5528: $refuri=&declutter($refuri);
5529: my ($match,$cond)=&is_on_map($refuri);
5530: if ($match) {
5531: my $refstatecond=$cond;
5532: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5533: =~/\Q$priv\E\&([^\:]*)/) {
5534: $thisallowed.=$1;
5535: $uri=$refuri;
5536: $statecond=$refstatecond;
5537: }
5538: }
5539: }
5540: }
5541: }
5542:
5543: #
5544: # Gathered now: all privileges that could apply, and condition number
5545: #
5546: #
5547: # Full or no access?
5548: #
5549:
5550: if ($thisallowed=~/F/) {
5551: return 'F';
5552: }
5553:
5554: unless ($thisallowed) {
5555: return '';
5556: }
5557:
5558: # Restrictions exist, deal with them
5559: #
5560: # C:according to course preferences
5561: # R:according to resource settings
5562: # L:unless locked
5563: # X:according to user session state
5564: #
5565:
5566: # Possibly locked functionality, check all courses
5567: # Locks might take effect only after 10 minutes cache expiration for other
5568: # courses, and 2 minutes for current course
5569:
5570: my $envkey;
5571: if ($thisallowed=~/L/) {
5572: foreach $envkey (keys(%env)) {
5573: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5574: my $courseid=$2;
5575: my $roleid=$1.'.'.$2;
5576: $courseid=~s/^\///;
5577: my $expiretime=600;
5578: if ($env{'request.role'} eq $roleid) {
5579: $expiretime=120;
5580: }
5581: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5582: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5583: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5584: &coursedescription($courseid,{'freshen_cache' => 1});
5585: }
5586: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5587: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5588: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5589: &log($env{'user.domain'},$env{'user.name'},
5590: $env{'user.home'},
5591: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5592: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5593: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5594: return '';
5595: }
5596: }
5597: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5598: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5599: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5600: &log($env{'user.domain'},$env{'user.name'},
5601: $env{'user.home'},
5602: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5603: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5604: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5605: return '';
5606: }
5607: }
5608: }
5609: }
5610: }
5611:
5612: #
5613: # Rest of the restrictions depend on selected course
5614: #
5615:
5616: unless ($env{'request.course.id'}) {
5617: if ($thisallowed eq 'A') {
5618: return 'A';
5619: } elsif ($thisallowed eq 'B') {
5620: return 'B';
5621: } else {
5622: return '1';
5623: }
5624: }
5625:
5626: #
5627: # Now user is definitely in a course
5628: #
5629:
5630:
5631: # Course preferences
5632:
5633: if ($thisallowed=~/C/) {
5634: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5635: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5636: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5637: =~/\Q$rolecode\E/) {
5638: if ($priv ne 'pch') {
5639: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5640: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5641: $env{'request.course.id'});
5642: }
5643: return '';
5644: }
5645:
5646: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5647: =~/\Q$unamedom\E/) {
5648: if ($priv ne 'pch') {
5649: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5650: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5651: $env{'request.course.id'});
5652: }
5653: return '';
5654: }
5655: }
5656:
5657: # Resource preferences
5658:
5659: if ($thisallowed=~/R/) {
5660: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5661: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5662: if ($priv ne 'pch') {
5663: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5664: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5665: }
5666: return '';
5667: }
5668: }
5669:
5670: # Restricted by state or randomout?
5671:
5672: if ($thisallowed=~/X/) {
5673: if ($env{'acc.randomout'}) {
5674: if (!$symb) { $symb=&symbread($uri,1); }
5675: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5676: return '';
5677: }
5678: }
5679: if (&condval($statecond)) {
5680: return '2';
5681: } else {
5682: return '';
5683: }
5684: }
5685:
5686: if ($thisallowed eq 'A') {
5687: return 'A';
5688: } elsif ($thisallowed eq 'B') {
5689: return 'B';
5690: }
5691: return 'F';
5692: }
5693:
5694: sub split_uri_for_cond {
5695: my $uri=&deversion(&declutter(shift));
5696: my @uriparts=split(/\//,$uri);
5697: my $filename=pop(@uriparts);
5698: my $pathname=join('/',@uriparts);
5699: return ($pathname,$filename);
5700: }
5701: # --------------------------------------------------- Is a resource on the map?
5702:
5703: sub is_on_map {
5704: my ($pathname,$filename) = &split_uri_for_cond(shift);
5705: #Trying to find the conditional for the file
5706: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5707: /\&\Q$filename\E\:([\d\|]+)\&/);
5708: if ($match) {
5709: return (1,$1);
5710: } else {
5711: return (0,0);
5712: }
5713: }
5714:
5715: # --------------------------------------------------------- Get symb from alias
5716:
5717: sub get_symb_from_alias {
5718: my $symb=shift;
5719: my ($map,$resid,$url)=&decode_symb($symb);
5720: # Already is a symb
5721: if ($url) { return $symb; }
5722: # Must be an alias
5723: my $aliassymb='';
5724: my %bighash;
5725: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5726: &GDBM_READER(),0640)) {
5727: my $rid=$bighash{'mapalias_'.$symb};
5728: if ($rid) {
5729: my ($mapid,$resid)=split(/\./,$rid);
5730: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5731: $resid,$bighash{'src_'.$rid});
5732: }
5733: untie %bighash;
5734: }
5735: return $aliassymb;
5736: }
5737:
5738: # ----------------------------------------------------------------- Define Role
5739:
5740: sub definerole {
5741: if (allowed('mcr','/')) {
5742: my ($rolename,$sysrole,$domrole,$courole)=@_;
5743: foreach my $role (split(':',$sysrole)) {
5744: my ($crole,$cqual)=split(/\&/,$role);
5745: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5746: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5747: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5748: return "refused:s:$crole&$cqual";
5749: }
5750: }
5751: }
5752: foreach my $role (split(':',$domrole)) {
5753: my ($crole,$cqual)=split(/\&/,$role);
5754: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5755: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5756: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5757: return "refused:d:$crole&$cqual";
5758: }
5759: }
5760: }
5761: foreach my $role (split(':',$courole)) {
5762: my ($crole,$cqual)=split(/\&/,$role);
5763: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5764: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5765: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5766: return "refused:c:$crole&$cqual";
5767: }
5768: }
5769: }
5770: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5771: "$env{'user.domain'}:$env{'user.name'}:".
5772: "rolesdef_$rolename=".
5773: escape($sysrole.'_'.$domrole.'_'.$courole);
5774: return reply($command,$env{'user.home'});
5775: } else {
5776: return 'refused';
5777: }
5778: }
5779:
5780: # ---------------- Make a metadata query against the network of library servers
5781:
5782: sub metadata_query {
5783: my ($query,$custom,$customshow,$server_array)=@_;
5784: my %rhash;
5785: my %libserv = &all_library();
5786: my @server_list = (defined($server_array) ? @$server_array
5787: : keys(%libserv) );
5788: for my $server (@server_list) {
5789: unless ($custom or $customshow) {
5790: my $reply=&reply("querysend:".&escape($query),$server);
5791: $rhash{$server}=$reply;
5792: }
5793: else {
5794: my $reply=&reply("querysend:".&escape($query).':'.
5795: &escape($custom).':'.&escape($customshow),
5796: $server);
5797: $rhash{$server}=$reply;
5798: }
5799: }
5800: return \%rhash;
5801: }
5802:
5803: # ----------------------------------------- Send log queries and wait for reply
5804:
5805: sub log_query {
5806: my ($uname,$udom,$query,%filters)=@_;
5807: my $uhome=&homeserver($uname,$udom);
5808: if ($uhome eq 'no_host') { return 'error: no_host'; }
5809: my $uhost=&hostname($uhome);
5810: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5811: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5812: $uhome);
5813: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5814: return get_query_reply($queryid);
5815: }
5816:
5817: # -------------------------- Update MySQL table for portfolio file
5818:
5819: sub update_portfolio_table {
5820: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5821: if ($group ne '') {
5822: $file_name =~s /^\Q$group\E//;
5823: }
5824: my $homeserver = &homeserver($uname,$udom);
5825: my $queryid=
5826: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5827: ':'.&escape($file_name).':'.$action,$homeserver);
5828: my $reply = &get_query_reply($queryid);
5829: return $reply;
5830: }
5831:
5832: # -------------------------- Update MySQL allusers table
5833:
5834: sub update_allusers_table {
5835: my ($uname,$udom,$names) = @_;
5836: my $homeserver = &homeserver($uname,$udom);
5837: my $queryid=
5838: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5839: 'lastname='.&escape($names->{'lastname'}).'%%'.
5840: 'firstname='.&escape($names->{'firstname'}).'%%'.
5841: 'middlename='.&escape($names->{'middlename'}).'%%'.
5842: 'generation='.&escape($names->{'generation'}).'%%'.
5843: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5844: 'id='.&escape($names->{'id'}),$homeserver);
5845: return;
5846: }
5847:
5848: # ------- Request retrieval of institutional classlists for course(s)
5849:
5850: sub fetch_enrollment_query {
5851: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5852: my $homeserver;
5853: my $maxtries = 1;
5854: if ($context eq 'automated') {
5855: $homeserver = $perlvar{'lonHostID'};
5856: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5857: } else {
5858: $homeserver = &homeserver($cnum,$dom);
5859: }
5860: my $host=&hostname($homeserver);
5861: my $cmd = '';
5862: foreach my $affiliate (keys(%{$affiliatesref})) {
5863: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5864: }
5865: $cmd =~ s/%%$//;
5866: $cmd = &escape($cmd);
5867: my $query = 'fetchenrollment';
5868: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5869: unless ($queryid=~/^\Q$host\E\_/) {
5870: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5871: return 'error: '.$queryid;
5872: }
5873: my $reply = &get_query_reply($queryid);
5874: my $tries = 1;
5875: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5876: $reply = &get_query_reply($queryid);
5877: $tries ++;
5878: }
5879: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5880: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5881: } else {
5882: my @responses = split(/:/,$reply);
5883: if ($homeserver eq $perlvar{'lonHostID'}) {
5884: foreach my $line (@responses) {
5885: my ($key,$value) = split(/=/,$line,2);
5886: $$replyref{$key} = $value;
5887: }
5888: } else {
5889: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5890: foreach my $line (@responses) {
5891: my ($key,$value) = split(/=/,$line);
5892: $$replyref{$key} = $value;
5893: if ($value > 0) {
5894: foreach my $item (@{$$affiliatesref{$key}}) {
5895: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5896: my $destname = $pathname.'/'.$filename;
5897: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5898: if ($xml_classlist =~ /^error/) {
5899: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5900: } else {
5901: if ( open(FILE,">$destname") ) {
5902: print FILE &unescape($xml_classlist);
5903: close(FILE);
5904: } else {
5905: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
5906: }
5907: }
5908: }
5909: }
5910: }
5911: }
5912: return 'ok';
5913: }
5914: return 'error';
5915: }
5916:
5917: sub get_query_reply {
5918: my $queryid=shift;
5919: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
5920: my $reply='';
5921: for (1..100) {
5922: sleep 2;
5923: if (-e $replyfile.'.end') {
5924: if (open(my $fh,$replyfile)) {
5925: $reply = join('',<$fh>);
5926: close($fh);
5927: } else { return 'error: reply_file_error'; }
5928: return &unescape($reply);
5929: }
5930: }
5931: return 'timeout:'.$queryid;
5932: }
5933:
5934: sub courselog_query {
5935: #
5936: # possible filters:
5937: # url: url or symb
5938: # username
5939: # domain
5940: # action: view, submit, grade
5941: # start: timestamp
5942: # end: timestamp
5943: #
5944: my (%filters)=@_;
5945: unless ($env{'request.course.id'}) { return 'no_course'; }
5946: if ($filters{'url'}) {
5947: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5948: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5949: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5950: }
5951: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5952: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5953: return &log_query($cname,$cdom,'courselog',%filters);
5954: }
5955:
5956: sub userlog_query {
5957: #
5958: # possible filters:
5959: # action: log check role
5960: # start: timestamp
5961: # end: timestamp
5962: #
5963: my ($uname,$udom,%filters)=@_;
5964: return &log_query($uname,$udom,'userlog',%filters);
5965: }
5966:
5967: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5968:
5969: sub auto_run {
5970: my ($cnum,$cdom) = @_;
5971: my $response = 0;
5972: my $settings;
5973: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5974: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5975: $settings = $domconfig{'autoenroll'};
5976: if ($settings->{'run'} eq '1') {
5977: $response = 1;
5978: }
5979: } else {
5980: my $homeserver;
5981: if (&is_course($cdom,$cnum)) {
5982: $homeserver = &homeserver($cnum,$cdom);
5983: } else {
5984: $homeserver = &domain($cdom,'primary');
5985: }
5986: if ($homeserver ne 'no_host') {
5987: $response = &reply('autorun:'.$cdom,$homeserver);
5988: }
5989: }
5990: return $response;
5991: }
5992:
5993: sub auto_get_sections {
5994: my ($cnum,$cdom,$inst_coursecode) = @_;
5995: my $homeserver;
5996: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5997: $homeserver = &homeserver($cnum,$cdom);
5998: }
5999: if (!defined($homeserver)) {
6000: if ($cdom =~ /^$match_domain$/) {
6001: $homeserver = &domain($cdom,'primary');
6002: }
6003: }
6004: my @secs;
6005: if (defined($homeserver)) {
6006: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6007: unless ($response eq 'refused') {
6008: @secs = split(/:/,$response);
6009: }
6010: }
6011: return @secs;
6012: }
6013:
6014: sub auto_new_course {
6015: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
6016: my $homeserver = &homeserver($cnum,$cdom);
6017: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
6018: return $response;
6019: }
6020:
6021: sub auto_validate_courseID {
6022: my ($cnum,$cdom,$inst_course_id) = @_;
6023: my $homeserver = &homeserver($cnum,$cdom);
6024: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6025: return $response;
6026: }
6027:
6028: sub auto_validate_instcode {
6029: my ($cnum,$cdom,$instcode,$owner) = @_;
6030: my ($homeserver,$response);
6031: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6032: $homeserver = &homeserver($cnum,$cdom);
6033: }
6034: if (!defined($homeserver)) {
6035: if ($cdom =~ /^$match_domain$/) {
6036: $homeserver = &domain($cdom,'primary');
6037: }
6038: }
6039: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6040: &escape($instcode).':'.&escape($owner),$homeserver));
6041: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6042: return ($outcome,$description);
6043: }
6044:
6045: sub auto_create_password {
6046: my ($cnum,$cdom,$authparam,$udom) = @_;
6047: my ($homeserver,$response);
6048: my $create_passwd = 0;
6049: my $authchk = '';
6050: if ($udom =~ /^$match_domain$/) {
6051: $homeserver = &domain($udom,'primary');
6052: }
6053: if ($homeserver eq '') {
6054: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6055: $homeserver = &homeserver($cnum,$cdom);
6056: }
6057: }
6058: if ($homeserver eq '') {
6059: $authchk = 'nodomain';
6060: } else {
6061: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6062: if ($response eq 'refused') {
6063: $authchk = 'refused';
6064: } else {
6065: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6066: }
6067: }
6068: return ($authparam,$create_passwd,$authchk);
6069: }
6070:
6071: sub auto_photo_permission {
6072: my ($cnum,$cdom,$students) = @_;
6073: my $homeserver = &homeserver($cnum,$cdom);
6074: my ($outcome,$perm_reqd,$conditions) =
6075: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6076: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6077: return (undef,undef);
6078: }
6079: return ($outcome,$perm_reqd,$conditions);
6080: }
6081:
6082: sub auto_checkphotos {
6083: my ($uname,$udom,$pid) = @_;
6084: my $homeserver = &homeserver($uname,$udom);
6085: my ($result,$resulttype);
6086: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6087: &escape($uname).':'.&escape($pid),
6088: $homeserver));
6089: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6090: return (undef,undef);
6091: }
6092: if ($outcome) {
6093: ($result,$resulttype) = split(/:/,$outcome);
6094: }
6095: return ($result,$resulttype);
6096: }
6097:
6098: sub auto_photochoice {
6099: my ($cnum,$cdom) = @_;
6100: my $homeserver = &homeserver($cnum,$cdom);
6101: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6102: &escape($cdom),
6103: $homeserver)));
6104: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6105: return (undef,undef);
6106: }
6107: return ($update,$comment);
6108: }
6109:
6110: sub auto_photoupdate {
6111: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6112: my $homeserver = &homeserver($cnum,$dom);
6113: my $host=&hostname($homeserver);
6114: my $cmd = '';
6115: my $maxtries = 1;
6116: foreach my $affiliate (keys(%{$affiliatesref})) {
6117: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6118: }
6119: $cmd =~ s/%%$//;
6120: $cmd = &escape($cmd);
6121: my $query = 'institutionalphotos';
6122: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6123: unless ($queryid=~/^\Q$host\E\_/) {
6124: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6125: return 'error: '.$queryid;
6126: }
6127: my $reply = &get_query_reply($queryid);
6128: my $tries = 1;
6129: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6130: $reply = &get_query_reply($queryid);
6131: $tries ++;
6132: }
6133: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6134: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6135: } else {
6136: my @responses = split(/:/,$reply);
6137: my $outcome = shift(@responses);
6138: foreach my $item (@responses) {
6139: my ($key,$value) = split(/=/,$item);
6140: $$photo{$key} = $value;
6141: }
6142: return $outcome;
6143: }
6144: return 'error';
6145: }
6146:
6147: sub auto_instcode_format {
6148: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6149: $cat_order) = @_;
6150: my $courses = '';
6151: my @homeservers;
6152: if ($caller eq 'global') {
6153: my %servers = &get_servers($codedom,'library');
6154: foreach my $tryserver (keys(%servers)) {
6155: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6156: push(@homeservers,$tryserver);
6157: }
6158: }
6159: } elsif ($caller eq 'requests') {
6160: if ($codedom =~ /^$match_domain$/) {
6161: my $chome = &domain($codedom,'primary');
6162: unless ($chome eq 'no_host') {
6163: push(@homeservers,$chome);
6164: }
6165: }
6166: } else {
6167: push(@homeservers,&homeserver($caller,$codedom));
6168: }
6169: foreach my $code (keys(%{$instcodes})) {
6170: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6171: }
6172: chop($courses);
6173: my $ok_response = 0;
6174: my $response;
6175: while (@homeservers > 0 && $ok_response == 0) {
6176: my $server = shift(@homeservers);
6177: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6178: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6179: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6180: split(/:/,$response);
6181: %{$codes} = (%{$codes},&str2hash($codes_str));
6182: push(@{$codetitles},&str2array($codetitles_str));
6183: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6184: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6185: $ok_response = 1;
6186: }
6187: }
6188: if ($ok_response) {
6189: return 'ok';
6190: } else {
6191: return $response;
6192: }
6193: }
6194:
6195: sub auto_instcode_defaults {
6196: my ($domain,$returnhash,$code_order) = @_;
6197: my @homeservers;
6198:
6199: my %servers = &get_servers($domain,'library');
6200: foreach my $tryserver (keys(%servers)) {
6201: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6202: push(@homeservers,$tryserver);
6203: }
6204: }
6205:
6206: my $response;
6207: foreach my $server (@homeservers) {
6208: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6209: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6210:
6211: foreach my $pair (split(/\&/,$response)) {
6212: my ($name,$value)=split(/\=/,$pair);
6213: if ($name eq 'code_order') {
6214: @{$code_order} = split(/\&/,&unescape($value));
6215: } else {
6216: $returnhash->{&unescape($name)}=&unescape($value);
6217: }
6218: }
6219: return 'ok';
6220: }
6221:
6222: return $response;
6223: }
6224:
6225: sub auto_possible_instcodes {
6226: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6227: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6228: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6229: return;
6230: }
6231: my (@homeservers,$uhome);
6232: if (defined(&domain($domain,'primary'))) {
6233: $uhome=&domain($domain,'primary');
6234: push(@homeservers,&domain($domain,'primary'));
6235: } else {
6236: my %servers = &get_servers($domain,'library');
6237: foreach my $tryserver (keys(%servers)) {
6238: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6239: push(@homeservers,$tryserver);
6240: }
6241: }
6242: }
6243: my $response;
6244: foreach my $server (@homeservers) {
6245: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6246: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6247: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6248: split(':',$response);
6249: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6250: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6251: foreach my $item (split('&',$cat_title)) {
6252: my ($name,$value)=split('=',$item);
6253: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6254: }
6255: foreach my $item (split('&',$cat_order)) {
6256: my ($name,$value)=split('=',$item);
6257: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6258: }
6259: return 'ok';
6260: }
6261: return $response;
6262: }
6263:
6264: sub auto_courserequest_checks {
6265: my ($dom) = @_;
6266: my ($homeserver,%validations);
6267: if ($dom =~ /^$match_domain$/) {
6268: $homeserver = &domain($dom,'primary');
6269: }
6270: unless ($homeserver eq 'no_host') {
6271: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6272: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6273: my @items = split(/&/,$response);
6274: foreach my $item (@items) {
6275: my ($key,$value) = split('=',$item);
6276: $validations{&unescape($key)} = &thaw_unescape($value);
6277: }
6278: }
6279: }
6280: return %validations;
6281: }
6282:
6283: sub auto_courserequest_validation {
6284: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6285: my ($homeserver,$response);
6286: if ($dom =~ /^$match_domain$/) {
6287: $homeserver = &domain($dom,'primary');
6288: }
6289: unless ($homeserver eq 'no_host') {
6290:
6291: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6292: ':'.&escape($crstype).':'.&escape($inststatuslist).
6293: ':'.&escape($instcode).':'.&escape($instseclist),
6294: $homeserver));
6295: }
6296: return $response;
6297: }
6298:
6299: sub auto_validate_class_sec {
6300: my ($cdom,$cnum,$owners,$inst_class) = @_;
6301: my $homeserver = &homeserver($cnum,$cdom);
6302: my $ownerlist;
6303: if (ref($owners) eq 'ARRAY') {
6304: $ownerlist = join(',',@{$owners});
6305: } else {
6306: $ownerlist = $owners;
6307: }
6308: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6309: &escape($ownerlist).':'.$cdom,$homeserver);
6310: return $response;
6311: }
6312:
6313: # ------------------------------------------------------- Course Group routines
6314:
6315: sub get_coursegroups {
6316: my ($cdom,$cnum,$group,$namespace) = @_;
6317: return(&dump($namespace,$cdom,$cnum,$group));
6318: }
6319:
6320: sub modify_coursegroup {
6321: my ($cdom,$cnum,$groupsettings) = @_;
6322: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6323: }
6324:
6325: sub toggle_coursegroup_status {
6326: my ($cdom,$cnum,$group,$action) = @_;
6327: my ($from_namespace,$to_namespace);
6328: if ($action eq 'delete') {
6329: $from_namespace = 'coursegroups';
6330: $to_namespace = 'deleted_groups';
6331: } else {
6332: $from_namespace = 'deleted_groups';
6333: $to_namespace = 'coursegroups';
6334: }
6335: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6336: if (my $tmp = &error(%curr_group)) {
6337: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6338: return ('read error',$tmp);
6339: } else {
6340: my %savedsettings = %curr_group;
6341: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6342: my $deloutcome;
6343: if ($result eq 'ok') {
6344: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6345: } else {
6346: return ('write error',$result);
6347: }
6348: if ($deloutcome eq 'ok') {
6349: return 'ok';
6350: } else {
6351: return ('delete error',$deloutcome);
6352: }
6353: }
6354: }
6355:
6356: sub modify_group_roles {
6357: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6358: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6359: my $role = 'gr/'.&escape($userprivs);
6360: my ($uname,$udom) = split(/:/,$user);
6361: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6362: if ($result eq 'ok') {
6363: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6364: }
6365: return $result;
6366: }
6367:
6368: sub modify_coursegroup_membership {
6369: my ($cdom,$cnum,$membership) = @_;
6370: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6371: return $result;
6372: }
6373:
6374: sub get_active_groups {
6375: my ($udom,$uname,$cdom,$cnum) = @_;
6376: my $now = time;
6377: my %groups = ();
6378: foreach my $key (keys(%env)) {
6379: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6380: my ($start,$end) = split(/\./,$env{$key});
6381: if (($end!=0) && ($end<$now)) { next; }
6382: if (($start!=0) && ($start>$now)) { next; }
6383: if ($1 eq $cdom && $2 eq $cnum) {
6384: $groups{$3} = $env{$key} ;
6385: }
6386: }
6387: }
6388: return %groups;
6389: }
6390:
6391: sub get_group_membership {
6392: my ($cdom,$cnum,$group) = @_;
6393: return(&dump('groupmembership',$cdom,$cnum,$group));
6394: }
6395:
6396: sub get_users_groups {
6397: my ($udom,$uname,$courseid) = @_;
6398: my @usersgroups;
6399: my $cachetime=1800;
6400:
6401: my $hashid="$udom:$uname:$courseid";
6402: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6403: if (defined($cached)) {
6404: @usersgroups = split(/:/,$grouplist);
6405: } else {
6406: $grouplist = '';
6407: my $courseurl = &courseid_to_courseurl($courseid);
6408: my $extra = &freeze_escape({'skipcheck' => 1});
6409: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
6410: my $access_end = $env{'course.'.$courseid.
6411: '.default_enrollment_end_date'};
6412: my $now = time;
6413: foreach my $key (keys(%roleshash)) {
6414: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6415: my $group = $1;
6416: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6417: my $start = $2;
6418: my $end = $1;
6419: if ($start == -1) { next; } # deleted from group
6420: if (($start!=0) && ($start>$now)) { next; }
6421: if (($end!=0) && ($end<$now)) {
6422: if ($access_end && $access_end < $now) {
6423: if ($access_end - $end < 86400) {
6424: push(@usersgroups,$group);
6425: }
6426: }
6427: next;
6428: }
6429: push(@usersgroups,$group);
6430: }
6431: }
6432: }
6433: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6434: $grouplist = join(':',@usersgroups);
6435: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6436: }
6437: return @usersgroups;
6438: }
6439:
6440: sub devalidate_getgroups_cache {
6441: my ($udom,$uname,$cdom,$cnum)=@_;
6442: my $courseid = $cdom.'_'.$cnum;
6443:
6444: my $hashid="$udom:$uname:$courseid";
6445: &devalidate_cache_new('getgroups',$hashid);
6446: }
6447:
6448: # ------------------------------------------------------------------ Plain Text
6449:
6450: sub plaintext {
6451: my ($short,$type,$cid,$forcedefault) = @_;
6452: if ($short =~ m{^cr/}) {
6453: return (split('/',$short))[-1];
6454: }
6455: if (!defined($cid)) {
6456: $cid = $env{'request.course.id'};
6457: }
6458: my %rolenames = (
6459: Course => 'std',
6460: Community => 'alt1',
6461: );
6462: if ($cid ne '') {
6463: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6464: unless ($forcedefault) {
6465: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6466: &Apache::lonlocal::mt_escape(\$roletext);
6467: return &Apache::lonlocal::mt($roletext);
6468: }
6469: }
6470: }
6471: if ((defined($type)) && (defined($rolenames{$type})) &&
6472: (defined($rolenames{$type})) &&
6473: (defined($prp{$short}{$rolenames{$type}}))) {
6474: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6475: } elsif ($cid ne '') {
6476: my $crstype = $env{'course.'.$cid.'.type'};
6477: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6478: (defined($prp{$short}{$rolenames{$crstype}}))) {
6479: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6480: }
6481: }
6482: return &Apache::lonlocal::mt($prp{$short}{'std'});
6483: }
6484:
6485: # ----------------------------------------------------------------- Assign Role
6486:
6487: sub assignrole {
6488: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6489: $context)=@_;
6490: my $mrole;
6491: if ($role =~ /^cr\//) {
6492: my $cwosec=$url;
6493: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6494: unless (&allowed('ccr',$cwosec)) {
6495: my $refused = 1;
6496: if ($context eq 'requestcourses') {
6497: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6498: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6499: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6500: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6501: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6502: if ($crsenv{'internal.courseowner'} eq
6503: $env{'user.name'}.':'.$env{'user.domain'}) {
6504: $refused = '';
6505: }
6506: }
6507: }
6508: }
6509: }
6510: if ($refused) {
6511: &logthis('Refused custom assignrole: '.
6512: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6513: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6514: return 'refused';
6515: }
6516: }
6517: $mrole='cr';
6518: } elsif ($role =~ /^gr\//) {
6519: my $cwogrp=$url;
6520: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6521: unless (&allowed('mdg',$cwogrp)) {
6522: &logthis('Refused group assignrole: '.
6523: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6524: $env{'user.name'}.' at '.$env{'user.domain'});
6525: return 'refused';
6526: }
6527: $mrole='gr';
6528: } else {
6529: my $cwosec=$url;
6530: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6531: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6532: my $refused;
6533: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6534: if (!(&allowed('c'.$role,$url))) {
6535: $refused = 1;
6536: }
6537: } else {
6538: $refused = 1;
6539: }
6540: if ($refused) {
6541: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6542: if (!$selfenroll && $context eq 'course') {
6543: my %crsenv;
6544: if ($role eq 'cc' || $role eq 'co') {
6545: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6546: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6547: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6548: if ($crsenv{'internal.courseowner'} eq
6549: $env{'user.name'}.':'.$env{'user.domain'}) {
6550: $refused = '';
6551: }
6552: }
6553: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6554: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6555: if ($crsenv{'internal.courseowner'} eq
6556: $env{'user.name'}.':'.$env{'user.domain'}) {
6557: $refused = '';
6558: }
6559: }
6560: }
6561: }
6562: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6563: $refused = '';
6564: } elsif ($context eq 'requestcourses') {
6565: my @possroles = ('st','ta','ep','in','cc','co');
6566: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6567: my $wrongcc;
6568: if ($cnum =~ /^$match_community$/) {
6569: $wrongcc = 1 if ($role eq 'cc');
6570: } else {
6571: $wrongcc = 1 if ($role eq 'co');
6572: }
6573: unless ($wrongcc) {
6574: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6575: if ($crsenv{'internal.courseowner'} eq
6576: $env{'user.name'}.':'.$env{'user.domain'}) {
6577: $refused = '';
6578: }
6579: }
6580: }
6581: }
6582: if ($refused) {
6583: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6584: ' '.$role.' '.$end.' '.$start.' by '.
6585: $env{'user.name'}.' at '.$env{'user.domain'});
6586: return 'refused';
6587: }
6588: }
6589: }
6590: $mrole=$role;
6591: }
6592: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6593: "$udom:$uname:$url".'_'."$mrole=$role";
6594: if ($end) { $command.='_'.$end; }
6595: if ($start) {
6596: if ($end) {
6597: $command.='_'.$start;
6598: } else {
6599: $command.='_0_'.$start;
6600: }
6601: }
6602: my $origstart = $start;
6603: my $origend = $end;
6604: my $delflag;
6605: # actually delete
6606: if ($deleteflag) {
6607: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6608: # modify command to delete the role
6609: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6610: "$udom:$uname:$url".'_'."$mrole";
6611: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6612: # set start and finish to negative values for userrolelog
6613: $start=-1;
6614: $end=-1;
6615: $delflag = 1;
6616: }
6617: }
6618: # send command
6619: my $answer=&reply($command,&homeserver($uname,$udom));
6620: # log new user role if status is ok
6621: if ($answer eq 'ok') {
6622: &userrolelog($role,$uname,$udom,$url,$start,$end);
6623: # for course roles, perform group memberships changes triggered by role change.
6624: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6625: unless ($role =~ /^gr/) {
6626: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6627: $origstart,$selfenroll,$context);
6628: }
6629: if ($role eq 'cc') {
6630: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6631: }
6632: }
6633: return $answer;
6634: }
6635:
6636: sub autoupdate_coowners {
6637: my ($url,$end,$start,$uname,$udom) = @_;
6638: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6639: if (($cdom ne '') && ($cnum ne '')) {
6640: my $now = time;
6641: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6642: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6643: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6644: my $instcode = $coursehash{'internal.coursecode'};
6645: if ($instcode ne '') {
6646: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6647: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6648: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6649: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6650: if ($result eq 'valid') {
6651: if ($coursehash{'internal.co-owners'}) {
6652: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6653: push(@newcoowners,$coowner);
6654: }
6655: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6656: push(@newcoowners,$uname.':'.$udom);
6657: }
6658: @newcoowners = sort(@newcoowners);
6659: } else {
6660: push(@newcoowners,$uname.':'.$udom);
6661: }
6662: } else {
6663: if ($coursehash{'internal.co-owners'}) {
6664: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6665: unless ($coowner eq $uname.':'.$udom) {
6666: push(@newcoowners,$coowner);
6667: }
6668: }
6669: unless (@newcoowners > 0) {
6670: $delcoowners = 1;
6671: $coowners = '';
6672: }
6673: }
6674: }
6675: if (@newcoowners || $delcoowners) {
6676: &store_coowners($cdom,$cnum,$coursehash{'home'},
6677: $delcoowners,@newcoowners);
6678: }
6679: }
6680: }
6681: }
6682: }
6683: }
6684: }
6685:
6686: sub store_coowners {
6687: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6688: my $cid = $cdom.'_'.$cnum;
6689: my ($coowners,$delresult,$putresult);
6690: if (@newcoowners) {
6691: $coowners = join(',',@newcoowners);
6692: my %coownershash = (
6693: 'internal.co-owners' => $coowners,
6694: );
6695: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6696: if ($putresult eq 'ok') {
6697: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6698: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6699: }
6700: }
6701: }
6702: if ($delcoowners) {
6703: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6704: if ($delresult eq 'ok') {
6705: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6706: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6707: }
6708: }
6709: }
6710: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6711: my %crsinfo =
6712: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6713: if (ref($crsinfo{$cid}) eq 'HASH') {
6714: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6715: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6716: }
6717: }
6718: }
6719:
6720: # -------------------------------------------------- Modify user authentication
6721: # Overrides without validation
6722:
6723: sub modifyuserauth {
6724: my ($udom,$uname,$umode,$upass)=@_;
6725: my $uhome=&homeserver($uname,$udom);
6726: unless (&allowed('mau',$udom)) { return 'refused'; }
6727: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6728: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6729: ' in domain '.$env{'request.role.domain'});
6730: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6731: &escape($upass),$uhome);
6732: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6733: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6734: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6735: &log($udom,,$uname,$uhome,
6736: 'Authentication changed by '.$env{'user.domain'}.', '.
6737: $env{'user.name'}.', '.$umode.
6738: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6739: unless ($reply eq 'ok') {
6740: &logthis('Authentication mode error: '.$reply);
6741: return 'error: '.$reply;
6742: }
6743: return 'ok';
6744: }
6745:
6746: # --------------------------------------------------------------- Modify a user
6747:
6748: sub modifyuser {
6749: my ($udom, $uname, $uid,
6750: $umode, $upass, $first,
6751: $middle, $last, $gene,
6752: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
6753: $udom= &LONCAPA::clean_domain($udom);
6754: $uname=&LONCAPA::clean_username($uname);
6755: my $showcandelete = 'none';
6756: if (ref($candelete) eq 'ARRAY') {
6757: if (@{$candelete} > 0) {
6758: $showcandelete = join(', ',@{$candelete});
6759: }
6760: }
6761: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6762: $umode.', '.$first.', '.$middle.', '.
6763: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
6764: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6765: ' desiredhome not specified').
6766: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6767: ' in domain '.$env{'request.role.domain'});
6768: my $uhome=&homeserver($uname,$udom,'true');
6769: my $newuser;
6770: if ($uhome eq 'no_host') {
6771: $newuser = 1;
6772: }
6773: # ----------------------------------------------------------------- Create User
6774: if (($uhome eq 'no_host') &&
6775: (($umode && $upass) || ($umode eq 'localauth'))) {
6776: my $unhome='';
6777: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6778: $unhome = $desiredhome;
6779: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6780: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6781: } else { # load balancing routine for determining $unhome
6782: my $loadm=10000000;
6783: my %servers = &get_servers($udom,'library');
6784: foreach my $tryserver (keys(%servers)) {
6785: my $answer=reply('load',$tryserver);
6786: if (($answer=~/\d+/) && ($answer<$loadm)) {
6787: $loadm=$answer;
6788: $unhome=$tryserver;
6789: }
6790: }
6791: }
6792: if (($unhome eq '') || ($unhome eq 'no_host')) {
6793: return 'error: unable to find a home server for '.$uname.
6794: ' in domain '.$udom;
6795: }
6796: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6797: &escape($upass),$unhome);
6798: unless ($reply eq 'ok') {
6799: return 'error: '.$reply;
6800: }
6801: $uhome=&homeserver($uname,$udom,'true');
6802: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6803: return 'error: unable verify users home machine.';
6804: }
6805: } # End of creation of new user
6806: # ---------------------------------------------------------------------- Add ID
6807: if ($uid) {
6808: $uid=~tr/A-Z/a-z/;
6809: my %uidhash=&idrget($udom,$uname);
6810: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6811: && (!$forceid)) {
6812: unless ($uid eq $uidhash{$uname}) {
6813: return 'error: user id "'.$uid.'" does not match '.
6814: 'current user id "'.$uidhash{$uname}.'".';
6815: }
6816: } else {
6817: &idput($udom,($uname => $uid));
6818: }
6819: }
6820: # -------------------------------------------------------------- Add names, etc
6821: my @tmp=&get('environment',
6822: ['firstname','middlename','lastname','generation','id',
6823: 'permanentemail','inststatus'],
6824: $udom,$uname);
6825: my (%names,%oldnames);
6826: if ($tmp[0] =~ m/^error:.*/) {
6827: %names=();
6828: } else {
6829: %names = @tmp;
6830: %oldnames = %names;
6831: }
6832: #
6833: # If name, email and/or uid are blank (e.g., because an uploaded file
6834: # of users did not contain them), do not overwrite existing values
6835: # unless field is in $candelete array ref.
6836: #
6837:
6838: my @fields = ('firstname','middlename','lastname','generation',
6839: 'permanentemail','id');
6840: my %newvalues;
6841: if (ref($candelete) eq 'ARRAY') {
6842: foreach my $field (@fields) {
6843: if (grep(/^\Q$field\E$/,@{$candelete})) {
6844: if ($field eq 'firstname') {
6845: $names{$field} = $first;
6846: } elsif ($field eq 'middlename') {
6847: $names{$field} = $middle;
6848: } elsif ($field eq 'lastname') {
6849: $names{$field} = $last;
6850: } elsif ($field eq 'generation') {
6851: $names{$field} = $gene;
6852: } elsif ($field eq 'permanentemail') {
6853: $names{$field} = $email;
6854: } elsif ($field eq 'id') {
6855: $names{$field} = $uid;
6856: }
6857: }
6858: }
6859: }
6860: if ($first) { $names{'firstname'} = $first; }
6861: if (defined($middle)) { $names{'middlename'} = $middle; }
6862: if ($last) { $names{'lastname'} = $last; }
6863: if (defined($gene)) { $names{'generation'} = $gene; }
6864: if ($email) {
6865: $email=~s/[^\w\@\.\-\,]//gs;
6866: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6867: }
6868: if ($uid) { $names{'id'} = $uid; }
6869: if (defined($inststatus)) {
6870: $names{'inststatus'} = '';
6871: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6872: if (ref($usertypes) eq 'HASH') {
6873: my @okstatuses;
6874: foreach my $item (split(/:/,$inststatus)) {
6875: if (defined($usertypes->{$item})) {
6876: push(@okstatuses,$item);
6877: }
6878: }
6879: if (@okstatuses) {
6880: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6881: }
6882: }
6883: }
6884: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
6885: $umode.', '.$first.', '.$middle.', '.
6886: $last.', '.$gene.', '.$email.', '.$inststatus;
6887: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6888: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6889: } else {
6890: $logmsg .= ' during self creation';
6891: }
6892: my $changed;
6893: if ($newuser) {
6894: $changed = 1;
6895: } else {
6896: foreach my $field (@fields) {
6897: if ($names{$field} ne $oldnames{$field}) {
6898: $changed = 1;
6899: last;
6900: }
6901: }
6902: }
6903: unless ($changed) {
6904: $logmsg = 'No changes in user information needed for: '.$logmsg;
6905: &logthis($logmsg);
6906: return 'ok';
6907: }
6908: my $reply = &put('environment', \%names, $udom,$uname);
6909: if ($reply ne 'ok') {
6910: return 'error: '.$reply;
6911: }
6912: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
6913: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
6914: }
6915: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
6916: &devalidate_cache_new('namescache',$uname.':'.$udom);
6917: $logmsg = 'Success modifying user '.$logmsg;
6918: &logthis($logmsg);
6919: return 'ok';
6920: }
6921:
6922: # -------------------------------------------------------------- Modify student
6923:
6924: sub modifystudent {
6925: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
6926: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
6927: $selfenroll,$context,$inststatus)=@_;
6928: if (!$cid) {
6929: unless ($cid=$env{'request.course.id'}) {
6930: return 'not_in_class';
6931: }
6932: }
6933: # --------------------------------------------------------------- Make the user
6934: my $reply=&modifyuser
6935: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
6936: $desiredhome,$email,$inststatus);
6937: unless ($reply eq 'ok') { return $reply; }
6938: # This will cause &modify_student_enrollment to get the uid from the
6939: # students environment
6940: $uid = undef if (!$forceid);
6941: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
6942: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
6943: return $reply;
6944: }
6945:
6946: sub modify_student_enrollment {
6947: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
6948: my ($cdom,$cnum,$chome);
6949: if (!$cid) {
6950: unless ($cid=$env{'request.course.id'}) {
6951: return 'not_in_class';
6952: }
6953: $cdom=$env{'course.'.$cid.'.domain'};
6954: $cnum=$env{'course.'.$cid.'.num'};
6955: } else {
6956: ($cdom,$cnum)=split(/_/,$cid);
6957: }
6958: $chome=$env{'course.'.$cid.'.home'};
6959: if (!$chome) {
6960: $chome=&homeserver($cnum,$cdom);
6961: }
6962: if (!$chome) { return 'unknown_course'; }
6963: # Make sure the user exists
6964: my $uhome=&homeserver($uname,$udom);
6965: if (($uhome eq '') || ($uhome eq 'no_host')) {
6966: return 'error: no such user';
6967: }
6968: # Get student data if we were not given enough information
6969: if (!defined($first) || $first eq '' ||
6970: !defined($last) || $last eq '' ||
6971: !defined($uid) || $uid eq '' ||
6972: !defined($middle) || $middle eq '' ||
6973: !defined($gene) || $gene eq '') {
6974: # They did not supply us with enough data to enroll the student, so
6975: # we need to pick up more information.
6976: my %tmp = &get('environment',
6977: ['firstname','middlename','lastname', 'generation','id']
6978: ,$udom,$uname);
6979:
6980: #foreach my $key (keys(%tmp)) {
6981: # &logthis("key $key = ".$tmp{$key});
6982: #}
6983: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
6984: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
6985: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
6986: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
6987: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
6988: }
6989: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
6990: my $reply=cput('classlist',
6991: {"$uname:$udom" =>
6992: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
6993: $cdom,$cnum);
6994: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
6995: return 'error: '.$reply;
6996: } else {
6997: &devalidate_getsection_cache($udom,$uname,$cid);
6998: }
6999: # Add student role to user
7000: my $uurl='/'.$cid;
7001: $uurl=~s/\_/\//g;
7002: if ($usec) {
7003: $uurl.='/'.$usec;
7004: }
7005: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
7006: }
7007:
7008: sub format_name {
7009: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7010: my $name;
7011: if ($first ne 'lastname') {
7012: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7013: } else {
7014: if ($lastname=~/\S/) {
7015: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7016: $name=~s/\s+,/,/;
7017: } else {
7018: $name.= $firstname.' '.$middlename.' '.$generation;
7019: }
7020: }
7021: $name=~s/^\s+//;
7022: $name=~s/\s+$//;
7023: $name=~s/\s+/ /g;
7024: return $name;
7025: }
7026:
7027: # ------------------------------------------------- Write to course preferences
7028:
7029: sub writecoursepref {
7030: my ($courseid,%prefs)=@_;
7031: $courseid=~s/^\///;
7032: $courseid=~s/\_/\//g;
7033: my ($cdomain,$cnum)=split(/\//,$courseid);
7034: my $chome=homeserver($cnum,$cdomain);
7035: if (($chome eq '') || ($chome eq 'no_host')) {
7036: return 'error: no such course';
7037: }
7038: my $cstring='';
7039: foreach my $pref (keys(%prefs)) {
7040: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7041: }
7042: $cstring=~s/\&$//;
7043: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7044: }
7045:
7046: # ---------------------------------------------------------- Make/modify course
7047:
7048: sub createcourse {
7049: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7050: $course_owner,$crstype,$cnum,$context,$category)=@_;
7051: $url=&declutter($url);
7052: my $cid='';
7053: if ($context eq 'requestcourses') {
7054: my $can_create = 0;
7055: my ($ownername,$ownerdom) = split(':',$course_owner);
7056: if ($udom eq $ownerdom) {
7057: if (&usertools_access($ownername,$ownerdom,$category,undef,
7058: $context)) {
7059: $can_create = 1;
7060: }
7061: } else {
7062: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7063: $category);
7064: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7065: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7066: if (@curr > 0) {
7067: my @options = qw(approval validate autolimit);
7068: my $optregex = join('|',@options);
7069: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7070: $can_create = 1;
7071: }
7072: }
7073: }
7074: }
7075: if ($can_create) {
7076: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7077: unless (&allowed('ccc',$udom)) {
7078: return 'refused';
7079: }
7080: }
7081: } else {
7082: return 'refused';
7083: }
7084: } elsif (!&allowed('ccc',$udom)) {
7085: return 'refused';
7086: }
7087: # --------------------------------------------------------------- Get Unique ID
7088: my $uname;
7089: if ($cnum =~ /^$match_courseid$/) {
7090: my $chome=&homeserver($cnum,$udom,'true');
7091: if (($chome eq '') || ($chome eq 'no_host')) {
7092: $uname = $cnum;
7093: } else {
7094: $uname = &generate_coursenum($udom,$crstype);
7095: }
7096: } else {
7097: $uname = &generate_coursenum($udom,$crstype);
7098: }
7099: return $uname if ($uname =~ /^error/);
7100: # -------------------------------------------------- Check supplied server name
7101: if (!defined($course_server)) {
7102: if (defined(&domain($udom,'primary'))) {
7103: $course_server = &domain($udom,'primary');
7104: } else {
7105: $course_server = $env{'user.home'};
7106: }
7107: }
7108: my %host_servers =
7109: &Apache::lonnet::get_servers($udom,'library');
7110: unless ($host_servers{$course_server}) {
7111: return 'error: invalid home server for course: '.$course_server;
7112: }
7113: # ------------------------------------------------------------- Make the course
7114: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7115: $course_server);
7116: unless ($reply eq 'ok') { return 'error: '.$reply; }
7117: my $uhome=&homeserver($uname,$udom,'true');
7118: if (($uhome eq '') || ($uhome eq 'no_host')) {
7119: return 'error: no such course';
7120: }
7121: # ----------------------------------------------------------------- Course made
7122: # log existence
7123: my $now = time;
7124: my $newcourse = {
7125: $udom.'_'.$uname => {
7126: description => $description,
7127: inst_code => $inst_code,
7128: owner => $course_owner,
7129: type => $crstype,
7130: creator => $env{'user.name'}.':'.
7131: $env{'user.domain'},
7132: created => $now,
7133: context => $context,
7134: },
7135: };
7136: &courseidput($udom,$newcourse,$uhome,'notime');
7137: # set toplevel url
7138: my $topurl=$url;
7139: unless ($nonstandard) {
7140: # ------------------------------------------ For standard courses, make top url
7141: my $mapurl=&clutter($url);
7142: if ($mapurl eq '/res/') { $mapurl=''; }
7143: $env{'form.initmap'}=(<<ENDINITMAP);
7144: <map>
7145: <resource id="1" type="start"></resource>
7146: <resource id="2" src="$mapurl"></resource>
7147: <resource id="3" type="finish"></resource>
7148: <link index="1" from="1" to="2"></link>
7149: <link index="2" from="2" to="3"></link>
7150: </map>
7151: ENDINITMAP
7152: $topurl=&declutter(
7153: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7154: );
7155: }
7156: # ----------------------------------------------------------- Write preferences
7157: &writecoursepref($udom.'_'.$uname,
7158: ('description' => $description,
7159: 'url' => $topurl,
7160: 'internal.creator' => $env{'user.name'}.':'.
7161: $env{'user.domain'},
7162: 'internal.created' => $now,
7163: 'internal.creationcontext' => $context)
7164: );
7165: return '/'.$udom.'/'.$uname;
7166: }
7167:
7168: # ------------------------------------------------------------------- Create ID
7169: sub generate_coursenum {
7170: my ($udom,$crstype) = @_;
7171: my $domdesc = &domain($udom);
7172: return 'error: invalid domain' if ($domdesc eq '');
7173: my $first;
7174: if ($crstype eq 'Community') {
7175: $first = '0';
7176: } else {
7177: $first = int(1+rand(9));
7178: }
7179: my $uname=$first.
7180: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7181: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7182: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7183: # ----------------------------------------------- Make sure that does not exist
7184: my $uhome=&homeserver($uname,$udom,'true');
7185: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7186: if ($crstype eq 'Community') {
7187: $first = '0';
7188: } else {
7189: $first = int(1+rand(9));
7190: }
7191: $uname=$first.
7192: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7193: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7194: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7195: $uhome=&homeserver($uname,$udom,'true');
7196: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7197: return 'error: unable to generate unique course-ID';
7198: }
7199: }
7200: return $uname;
7201: }
7202:
7203: sub is_course {
7204: my ($cdom,$cnum) = @_;
7205: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7206: undef,'.');
7207: if (exists($courses{$cdom.'_'.$cnum})) {
7208: return 1;
7209: }
7210: return 0;
7211: }
7212:
7213: sub store_userdata {
7214: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7215: my $result;
7216: if ($datakey ne '') {
7217: if (ref($storehash) eq 'HASH') {
7218: if ($udom eq '' || $uname eq '') {
7219: $udom = $env{'user.domain'};
7220: $uname = $env{'user.name'};
7221: }
7222: my $uhome=&homeserver($uname,$udom);
7223: if (($uhome eq '') || ($uhome eq 'no_host')) {
7224: $result = 'error: no_host';
7225: } else {
7226: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7227: $storehash->{'host'} = $perlvar{'lonHostID'};
7228:
7229: my $namevalue='';
7230: foreach my $key (keys(%{$storehash})) {
7231: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7232: }
7233: $namevalue=~s/\&$//;
7234: $result = &reply("store:$env{'user.domain'}:$env{'user.name'}:".
7235: "$namespace:$datakey:$namevalue",$uhome);
7236: }
7237: } else {
7238: $result = 'error: data to store was not a hash reference';
7239: }
7240: } else {
7241: $result= 'error: invalid requestkey';
7242: }
7243: return $result;
7244: }
7245:
7246: # ---------------------------------------------------------- Assign Custom Role
7247:
7248: sub assigncustomrole {
7249: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7250: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7251: $end,$start,$deleteflag,$selfenroll,$context);
7252: }
7253:
7254: # ----------------------------------------------------------------- Revoke Role
7255:
7256: sub revokerole {
7257: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7258: my $now=time;
7259: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7260: }
7261:
7262: # ---------------------------------------------------------- Revoke Custom Role
7263:
7264: sub revokecustomrole {
7265: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7266: my $now=time;
7267: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7268: $deleteflag,$selfenroll,$context);
7269: }
7270:
7271: # ------------------------------------------------------------ Disk usage
7272: sub diskusage {
7273: my ($udom,$uname,$directorypath,$getpropath)=@_;
7274: $directorypath =~ s/\/$//;
7275: my $listing=&reply('du2:'.&escape($directorypath).':'
7276: .&escape($getpropath).':'.&escape($uname).':'
7277: .&escape($udom),homeserver($uname,$udom));
7278: if ($listing eq 'unknown_cmd') {
7279: if ($getpropath) {
7280: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7281: }
7282: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7283: }
7284: return $listing;
7285: }
7286:
7287: sub is_locked {
7288: my ($file_name, $domain, $user) = @_;
7289: my @check;
7290: my $is_locked;
7291: push (@check,$file_name);
7292: my %locked = &get('file_permissions',\@check,
7293: $env{'user.domain'},$env{'user.name'});
7294: my ($tmp)=keys(%locked);
7295: if ($tmp=~/^error:/) { undef(%locked); }
7296:
7297: if (ref($locked{$file_name}) eq 'ARRAY') {
7298: $is_locked = 'false';
7299: foreach my $entry (@{$locked{$file_name}}) {
7300: if (ref($entry) eq 'ARRAY') {
7301: $is_locked = 'true';
7302: last;
7303: }
7304: }
7305: } else {
7306: $is_locked = 'false';
7307: }
7308: return $is_locked;
7309: }
7310:
7311: sub declutter_portfile {
7312: my ($file) = @_;
7313: $file =~ s{^(/portfolio/|portfolio/)}{/};
7314: return $file;
7315: }
7316:
7317: # ------------------------------------------------------------- Mark as Read Only
7318:
7319: sub mark_as_readonly {
7320: my ($domain,$user,$files,$what) = @_;
7321: my %current_permissions = &dump('file_permissions',$domain,$user);
7322: my ($tmp)=keys(%current_permissions);
7323: if ($tmp=~/^error:/) { undef(%current_permissions); }
7324: foreach my $file (@{$files}) {
7325: $file = &declutter_portfile($file);
7326: push(@{$current_permissions{$file}},$what);
7327: }
7328: &put('file_permissions',\%current_permissions,$domain,$user);
7329: return;
7330: }
7331:
7332: # ------------------------------------------------------------Save Selected Files
7333:
7334: sub save_selected_files {
7335: my ($user, $path, @files) = @_;
7336: my $filename = $user."savedfiles";
7337: my @other_files = &files_not_in_path($user, $path);
7338: open (OUT, '>'.$tmpdir.$filename);
7339: foreach my $file (@files) {
7340: print (OUT $env{'form.currentpath'}.$file."\n");
7341: }
7342: foreach my $file (@other_files) {
7343: print (OUT $file."\n");
7344: }
7345: close (OUT);
7346: return 'ok';
7347: }
7348:
7349: sub clear_selected_files {
7350: my ($user) = @_;
7351: my $filename = $user."savedfiles";
7352: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7353: print (OUT undef);
7354: close (OUT);
7355: return ("ok");
7356: }
7357:
7358: sub files_in_path {
7359: my ($user, $path) = @_;
7360: my $filename = $user."savedfiles";
7361: my %return_files;
7362: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7363: while (my $line_in = <IN>) {
7364: chomp ($line_in);
7365: my @paths_and_file = split (m!/!, $line_in);
7366: my $file_part = pop (@paths_and_file);
7367: my $path_part = join ('/', @paths_and_file);
7368: $path_part.='/';
7369: my $path_and_file = $path_part.$file_part;
7370: if ($path_part eq $path) {
7371: $return_files{$file_part}= 'selected';
7372: }
7373: }
7374: close (IN);
7375: return (\%return_files);
7376: }
7377:
7378: # called in portfolio select mode, to show files selected NOT in current directory
7379: sub files_not_in_path {
7380: my ($user, $path) = @_;
7381: my $filename = $user."savedfiles";
7382: my @return_files;
7383: my $path_part;
7384: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7385: while (my $line = <IN>) {
7386: #ok, I know it's clunky, but I want it to work
7387: my @paths_and_file = split(m|/|, $line);
7388: my $file_part = pop(@paths_and_file);
7389: chomp($file_part);
7390: my $path_part = join('/', @paths_and_file);
7391: $path_part .= '/';
7392: my $path_and_file = $path_part.$file_part;
7393: if ($path_part ne $path) {
7394: push(@return_files, ($path_and_file));
7395: }
7396: }
7397: close(OUT);
7398: return (@return_files);
7399: }
7400:
7401: #----------------------------------------------Get portfolio file permissions
7402:
7403: sub get_portfile_permissions {
7404: my ($domain,$user) = @_;
7405: my %current_permissions = &dump('file_permissions',$domain,$user);
7406: my ($tmp)=keys(%current_permissions);
7407: if ($tmp=~/^error:/) { undef(%current_permissions); }
7408: return \%current_permissions;
7409: }
7410:
7411: #---------------------------------------------Get portfolio file access controls
7412:
7413: sub get_access_controls {
7414: my ($current_permissions,$group,$file) = @_;
7415: my %access;
7416: my $real_file = $file;
7417: $file =~ s/\.meta$//;
7418: if (defined($file)) {
7419: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7420: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7421: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7422: }
7423: }
7424: } else {
7425: foreach my $key (keys(%{$current_permissions})) {
7426: if ($key =~ /\0accesscontrol$/) {
7427: if (defined($group)) {
7428: if ($key !~ m-^\Q$group\E/-) {
7429: next;
7430: }
7431: }
7432: my ($fullpath) = split(/\0/,$key);
7433: if (ref($$current_permissions{$key}) eq 'HASH') {
7434: foreach my $control (keys(%{$$current_permissions{$key}})) {
7435: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7436: }
7437: }
7438: }
7439: }
7440: }
7441: return %access;
7442: }
7443:
7444: sub modify_access_controls {
7445: my ($file_name,$changes,$domain,$user)=@_;
7446: my ($outcome,$deloutcome);
7447: my %store_permissions;
7448: my %new_values;
7449: my %new_control;
7450: my %translation;
7451: my @deletions = ();
7452: my $now = time;
7453: if (exists($$changes{'activate'})) {
7454: if (ref($$changes{'activate'}) eq 'HASH') {
7455: my @newitems = sort(keys(%{$$changes{'activate'}}));
7456: my $numnew = scalar(@newitems);
7457: for (my $i=0; $i<$numnew; $i++) {
7458: my $newkey = $newitems[$i];
7459: my $newid = &Apache::loncommon::get_cgi_id();
7460: if ($newkey =~ /^\d+:/) {
7461: $newkey =~ s/^(\d+)/$newid/;
7462: $translation{$1} = $newid;
7463: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7464: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7465: $translation{$1} = $newid;
7466: }
7467: $new_values{$file_name."\0".$newkey} =
7468: $$changes{'activate'}{$newitems[$i]};
7469: $new_control{$newkey} = $now;
7470: }
7471: }
7472: }
7473: my %todelete;
7474: my %changed_items;
7475: foreach my $action ('delete','update') {
7476: if (exists($$changes{$action})) {
7477: if (ref($$changes{$action}) eq 'HASH') {
7478: foreach my $key (keys(%{$$changes{$action}})) {
7479: my ($itemnum) = ($key =~ /^([^:]+):/);
7480: if ($action eq 'delete') {
7481: $todelete{$itemnum} = 1;
7482: } else {
7483: $changed_items{$itemnum} = $key;
7484: }
7485: }
7486: }
7487: }
7488: }
7489: # get lock on access controls for file.
7490: my $lockhash = {
7491: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7492: ':'.$env{'user.domain'},
7493: };
7494: my $tries = 0;
7495: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7496:
7497: while (($gotlock ne 'ok') && $tries <3) {
7498: $tries ++;
7499: sleep 1;
7500: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7501: }
7502: if ($gotlock eq 'ok') {
7503: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7504: my ($tmp)=keys(%curr_permissions);
7505: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7506: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7507: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7508: if (ref($curr_controls) eq 'HASH') {
7509: foreach my $control_item (keys(%{$curr_controls})) {
7510: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7511: if (defined($todelete{$itemnum})) {
7512: push(@deletions,$file_name."\0".$control_item);
7513: } else {
7514: if (defined($changed_items{$itemnum})) {
7515: $new_control{$changed_items{$itemnum}} = $now;
7516: push(@deletions,$file_name."\0".$control_item);
7517: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7518: } else {
7519: $new_control{$control_item} = $$curr_controls{$control_item};
7520: }
7521: }
7522: }
7523: }
7524: }
7525: my ($group);
7526: if (&is_course($domain,$user)) {
7527: ($group,my $file) = split(/\//,$file_name,2);
7528: }
7529: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7530: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7531: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7532: # remove lock
7533: my @del_lock = ($file_name."\0".'locked_access_records');
7534: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7535: my $sqlresult =
7536: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7537: $group);
7538: } else {
7539: $outcome = "error: could not obtain lockfile\n";
7540: }
7541: return ($outcome,$deloutcome,\%new_values,\%translation);
7542: }
7543:
7544: sub make_public_indefinitely {
7545: my ($requrl) = @_;
7546: my $now = time;
7547: my $action = 'activate';
7548: my $aclnum = 0;
7549: if (&is_portfolio_url($requrl)) {
7550: my (undef,$udom,$unum,$file_name,$group) =
7551: &parse_portfolio_url($requrl);
7552: my $current_perms = &get_portfile_permissions($udom,$unum);
7553: my %access_controls = &get_access_controls($current_perms,
7554: $group,$file_name);
7555: foreach my $key (keys(%{$access_controls{$file_name}})) {
7556: my ($num,$scope,$end,$start) =
7557: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7558: if ($scope eq 'public') {
7559: if ($start <= $now && $end == 0) {
7560: $action = 'none';
7561: } else {
7562: $action = 'update';
7563: $aclnum = $num;
7564: }
7565: last;
7566: }
7567: }
7568: if ($action eq 'none') {
7569: return 'ok';
7570: } else {
7571: my %changes;
7572: my $newend = 0;
7573: my $newstart = $now;
7574: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7575: $changes{$action}{$newkey} = {
7576: type => 'public',
7577: time => {
7578: start => $newstart,
7579: end => $newend,
7580: },
7581: };
7582: my ($outcome,$deloutcome,$new_values,$translation) =
7583: &modify_access_controls($file_name,\%changes,$udom,$unum);
7584: return $outcome;
7585: }
7586: } else {
7587: return 'invalid';
7588: }
7589: }
7590:
7591: #------------------------------------------------------Get Marked as Read Only
7592:
7593: sub get_marked_as_readonly {
7594: my ($domain,$user,$what,$group) = @_;
7595: my $current_permissions = &get_portfile_permissions($domain,$user);
7596: my @readonly_files;
7597: my $cmp1=$what;
7598: if (ref($what)) { $cmp1=join('',@{$what}) };
7599: while (my ($file_name,$value) = each(%{$current_permissions})) {
7600: if (defined($group)) {
7601: if ($file_name !~ m-^\Q$group\E/-) {
7602: next;
7603: }
7604: }
7605: if (ref($value) eq "ARRAY"){
7606: foreach my $stored_what (@{$value}) {
7607: my $cmp2=$stored_what;
7608: if (ref($stored_what) eq 'ARRAY') {
7609: $cmp2=join('',@{$stored_what});
7610: }
7611: if ($cmp1 eq $cmp2) {
7612: push(@readonly_files, $file_name);
7613: last;
7614: } elsif (!defined($what)) {
7615: push(@readonly_files, $file_name);
7616: last;
7617: }
7618: }
7619: }
7620: }
7621: return @readonly_files;
7622: }
7623: #-----------------------------------------------------------Get Marked as Read Only Hash
7624:
7625: sub get_marked_as_readonly_hash {
7626: my ($current_permissions,$group,$what) = @_;
7627: my %readonly_files;
7628: while (my ($file_name,$value) = each(%{$current_permissions})) {
7629: if (defined($group)) {
7630: if ($file_name !~ m-^\Q$group\E/-) {
7631: next;
7632: }
7633: }
7634: if (ref($value) eq "ARRAY"){
7635: foreach my $stored_what (@{$value}) {
7636: if (ref($stored_what) eq 'ARRAY') {
7637: foreach my $lock_descriptor(@{$stored_what}) {
7638: if ($lock_descriptor eq 'graded') {
7639: $readonly_files{$file_name} = 'graded';
7640: } elsif ($lock_descriptor eq 'handback') {
7641: $readonly_files{$file_name} = 'handback';
7642: } else {
7643: if (!exists($readonly_files{$file_name})) {
7644: $readonly_files{$file_name} = 'locked';
7645: }
7646: }
7647: }
7648: }
7649: }
7650: }
7651: }
7652: return %readonly_files;
7653: }
7654: # ------------------------------------------------------------ Unmark as Read Only
7655:
7656: sub unmark_as_readonly {
7657: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7658: # for portfolio submissions, $what contains [$symb,$crsid]
7659: my ($domain,$user,$what,$file_name,$group) = @_;
7660: $file_name = &declutter_portfile($file_name);
7661: my $symb_crs = $what;
7662: if (ref($what)) { $symb_crs=join('',@$what); }
7663: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7664: my ($tmp)=keys(%current_permissions);
7665: if ($tmp=~/^error:/) { undef(%current_permissions); }
7666: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7667: foreach my $file (@readonly_files) {
7668: my $clean_file = &declutter_portfile($file);
7669: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7670: my $current_locks = $current_permissions{$file};
7671: my @new_locks;
7672: my @del_keys;
7673: if (ref($current_locks) eq "ARRAY"){
7674: foreach my $locker (@{$current_locks}) {
7675: my $compare=$locker;
7676: if (ref($locker) eq 'ARRAY') {
7677: $compare=join('',@{$locker});
7678: if ($compare ne $symb_crs) {
7679: push(@new_locks, $locker);
7680: }
7681: }
7682: }
7683: if (scalar(@new_locks) > 0) {
7684: $current_permissions{$file} = \@new_locks;
7685: } else {
7686: push(@del_keys, $file);
7687: &del('file_permissions',\@del_keys, $domain, $user);
7688: delete($current_permissions{$file});
7689: }
7690: }
7691: }
7692: &put('file_permissions',\%current_permissions,$domain,$user);
7693: return;
7694: }
7695:
7696: # ------------------------------------------------------------ Directory lister
7697:
7698: sub dirlist {
7699: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7700: $uri=~s/^\///;
7701: $uri=~s/\/$//;
7702: my ($udom, $uname);
7703: if ($getuserdir) {
7704: $udom = $userdomain;
7705: $uname = $username;
7706: } else {
7707: (undef,$udom,$uname)=split(/\//,$uri);
7708: if(defined($userdomain)) {
7709: $udom = $userdomain;
7710: }
7711: if(defined($username)) {
7712: $uname = $username;
7713: }
7714: }
7715: my ($dirRoot,$listing,@listing_results);
7716:
7717: $dirRoot = $perlvar{'lonDocRoot'};
7718: if (defined($getpropath)) {
7719: $dirRoot = &propath($udom,$uname);
7720: $dirRoot =~ s/\/$//;
7721: } elsif (defined($getuserdir)) {
7722: my $subdir=$uname.'__';
7723: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7724: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7725: ."/$udom/$subdir/$uname";
7726: } elsif (defined($alternateRoot)) {
7727: $dirRoot = $alternateRoot;
7728: }
7729:
7730: if($udom) {
7731: if($uname) {
7732: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7733: .$getuserdir.':'.&escape($dirRoot)
7734: .':'.&escape($uname).':'.&escape($udom),
7735: &homeserver($uname,$udom));
7736: if ($listing eq 'unknown_cmd') {
7737: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7738: &homeserver($uname,$udom));
7739: } else {
7740: @listing_results = map { &unescape($_); } split(/:/,$listing);
7741: }
7742: if ($listing eq 'unknown_cmd') {
7743: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7744: &homeserver($uname,$udom));
7745: @listing_results = split(/:/,$listing);
7746: } else {
7747: @listing_results = map { &unescape($_); } split(/:/,$listing);
7748: }
7749: return @listing_results;
7750: } elsif(!$alternateRoot) {
7751: my %allusers;
7752: my %servers = &get_servers($udom,'library');
7753: foreach my $tryserver (keys(%servers)) {
7754: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7755: &escape($udom),$tryserver);
7756: if ($listing eq 'unknown_cmd') {
7757: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7758: $udom, $tryserver);
7759: } else {
7760: @listing_results = map { &unescape($_); } split(/:/,$listing);
7761: }
7762: if ($listing eq 'unknown_cmd') {
7763: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7764: $udom, $tryserver);
7765: @listing_results = split(/:/,$listing);
7766: } else {
7767: @listing_results =
7768: map { &unescape($_); } split(/:/,$listing);
7769: }
7770: if ($listing_results[0] ne 'no_such_dir' &&
7771: $listing_results[0] ne 'empty' &&
7772: $listing_results[0] ne 'con_lost') {
7773: foreach my $line (@listing_results) {
7774: my ($entry) = split(/&/,$line,2);
7775: $allusers{$entry} = 1;
7776: }
7777: }
7778: }
7779: my $alluserstr='';
7780: foreach my $user (sort(keys(%allusers))) {
7781: $alluserstr.=$user.'&user:';
7782: }
7783: $alluserstr=~s/:$//;
7784: return split(/:/,$alluserstr);
7785: } else {
7786: return ('missing user name');
7787: }
7788: } elsif(!defined($getpropath)) {
7789: my @all_domains = sort(&all_domains());
7790: foreach my $domain (@all_domains) {
7791: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7792: }
7793: return @all_domains;
7794: } else {
7795: return ('missing domain');
7796: }
7797: }
7798:
7799: # --------------------------------------------- GetFileTimestamp
7800: # This function utilizes dirlist and returns the date stamp for
7801: # when it was last modified. It will also return an error of -1
7802: # if an error occurs
7803:
7804: sub GetFileTimestamp {
7805: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7806: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7807: $studentName = &LONCAPA::clean_username($studentName);
7808: my ($fileStat) =
7809: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7810: undef,$getuserdir);
7811: my @stats = split('&', $fileStat);
7812: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7813: # @stats contains first the filename, then the stat output
7814: return $stats[10]; # so this is 10 instead of 9.
7815: } else {
7816: return -1;
7817: }
7818: }
7819:
7820: sub stat_file {
7821: my ($uri) = @_;
7822: $uri = &clutter_with_no_wrapper($uri);
7823:
7824: my ($udom,$uname,$file);
7825: if ($uri =~ m-^/(uploaded|editupload)/-) {
7826: ($udom,$uname,$file) =
7827: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7828: $file = 'userfiles/'.$file;
7829: }
7830: if ($uri =~ m-^/res/-) {
7831: ($udom,$uname) =
7832: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7833: $file = $uri;
7834: }
7835:
7836: if (!$udom || !$uname || !$file) {
7837: # unable to handle the uri
7838: return ();
7839: }
7840: my $getpropath;
7841: if ($file =~ /^userfiles\//) {
7842: $getpropath = 1;
7843: }
7844: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7845: my @stats = split('&', $result);
7846:
7847: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7848: shift(@stats); #filename is first
7849: return @stats;
7850: }
7851: return ();
7852: }
7853:
7854: # -------------------------------------------------------- Value of a Condition
7855:
7856: # gets the value of a specific preevaluated condition
7857: # stored in the string $env{user.state.<cid>}
7858: # or looks up a condition reference in the bighash and if if hasn't
7859: # already been evaluated recurses into docondval to get the value of
7860: # the condition, then memoizing it to
7861: # $env{user.state.<cid>.<condition>}
7862: sub directcondval {
7863: my $number=shift;
7864: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7865: &Apache::lonuserstate::evalstate();
7866: }
7867: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7868: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7869: } elsif ($number =~ /^_/) {
7870: my $sub_condition;
7871: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7872: &GDBM_READER(),0640)) {
7873: $sub_condition=$bighash{'conditions'.$number};
7874: untie(%bighash);
7875: }
7876: my $value = &docondval($sub_condition);
7877: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7878: return $value;
7879: }
7880: if ($env{'user.state.'.$env{'request.course.id'}}) {
7881: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7882: } else {
7883: return 2;
7884: }
7885: }
7886:
7887: # get the collection of conditions for this resource
7888: sub condval {
7889: my $condidx=shift;
7890: my $allpathcond='';
7891: foreach my $cond (split(/\|/,$condidx)) {
7892: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7893: $allpathcond.=
7894: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7895: }
7896: }
7897: $allpathcond=~s/\|$//;
7898: return &docondval($allpathcond);
7899: }
7900:
7901: #evaluates an expression of conditions
7902: sub docondval {
7903: my ($allpathcond) = @_;
7904: my $result=0;
7905: if ($env{'request.course.id'}
7906: && defined($allpathcond)) {
7907: my $operand='|';
7908: my @stack;
7909: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
7910: if ($chunk eq '(') {
7911: push @stack,($operand,$result);
7912: } elsif ($chunk eq ')') {
7913: my $before=pop @stack;
7914: if (pop @stack eq '&') {
7915: $result=$result>$before?$before:$result;
7916: } else {
7917: $result=$result>$before?$result:$before;
7918: }
7919: } elsif (($chunk eq '&') || ($chunk eq '|')) {
7920: $operand=$chunk;
7921: } else {
7922: my $new=directcondval($chunk);
7923: if ($operand eq '&') {
7924: $result=$result>$new?$new:$result;
7925: } else {
7926: $result=$result>$new?$result:$new;
7927: }
7928: }
7929: }
7930: }
7931: return $result;
7932: }
7933:
7934: # ---------------------------------------------------- Devalidate courseresdata
7935:
7936: sub devalidatecourseresdata {
7937: my ($coursenum,$coursedomain)=@_;
7938: my $hashid=$coursenum.':'.$coursedomain;
7939: &devalidate_cache_new('courseres',$hashid);
7940: }
7941:
7942:
7943: # --------------------------------------------------- Course Resourcedata Query
7944: #
7945: # Parameters:
7946: # $coursenum - Number of the course.
7947: # $coursedomain - Domain at which the course was created.
7948: # Returns:
7949: # A hash of the course parameters along (I think) with timestamps
7950: # and version info.
7951:
7952: sub get_courseresdata {
7953: my ($coursenum,$coursedomain)=@_;
7954: my $coursehom=&homeserver($coursenum,$coursedomain);
7955: my $hashid=$coursenum.':'.$coursedomain;
7956: my ($result,$cached)=&is_cached_new('courseres',$hashid);
7957: my %dumpreply;
7958: unless (defined($cached)) {
7959: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
7960: $result=\%dumpreply;
7961: my ($tmp) = keys(%dumpreply);
7962: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
7963: &do_cache_new('courseres',$hashid,$result,600);
7964: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
7965: return $tmp;
7966: } elsif ($tmp =~ /^(error)/) {
7967: $result=undef;
7968: &do_cache_new('courseres',$hashid,$result,600);
7969: }
7970: }
7971: return $result;
7972: }
7973:
7974: sub devalidateuserresdata {
7975: my ($uname,$udom)=@_;
7976: my $hashid="$udom:$uname";
7977: &devalidate_cache_new('userres',$hashid);
7978: }
7979:
7980: sub get_userresdata {
7981: my ($uname,$udom)=@_;
7982: #most student don\'t have any data set, check if there is some data
7983: if (&EXT_cache_status($udom,$uname)) { return undef; }
7984:
7985: my $hashid="$udom:$uname";
7986: my ($result,$cached)=&is_cached_new('userres',$hashid);
7987: if (!defined($cached)) {
7988: my %resourcedata=&dump('resourcedata',$udom,$uname);
7989: $result=\%resourcedata;
7990: &do_cache_new('userres',$hashid,$result,600);
7991: }
7992: my ($tmp)=keys(%$result);
7993: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
7994: return $result;
7995: }
7996: #error 2 occurs when the .db doesn't exist
7997: if ($tmp!~/error: 2 /) {
7998: &logthis("<font color=\"blue\">WARNING:".
7999: " Trying to get resource data for ".
8000: $uname." at ".$udom.": ".
8001: $tmp."</font>");
8002: } elsif ($tmp=~/error: 2 /) {
8003: #&EXT_cache_set($udom,$uname);
8004: &do_cache_new('userres',$hashid,undef,600);
8005: undef($tmp); # not really an error so don't send it back
8006: }
8007: return $tmp;
8008: }
8009: #----------------------------------------------- resdata - return resource data
8010: # Purpose:
8011: # Return resource data for either users or for a course.
8012: # Parameters:
8013: # $name - Course/user name.
8014: # $domain - Name of the domain the user/course is registered on.
8015: # $type - Type of thing $name is (must be 'course' or 'user'
8016: # @which - Array of names of resources desired.
8017: # Returns:
8018: # The value of the first reasource in @which that is found in the
8019: # resource hash.
8020: # Exceptional Conditions:
8021: # If the $type passed in is not valid (not the string 'course' or
8022: # 'user', an undefined reference is returned.
8023: # If none of the resources are found, an undef is returned
8024: sub resdata {
8025: my ($name,$domain,$type,@which)=@_;
8026: my $result;
8027: if ($type eq 'course') {
8028: $result=&get_courseresdata($name,$domain);
8029: } elsif ($type eq 'user') {
8030: $result=&get_userresdata($name,$domain);
8031: }
8032: if (!ref($result)) { return $result; }
8033: foreach my $item (@which) {
8034: if (defined($result->{$item->[0]})) {
8035: return [$result->{$item->[0]},$item->[1]];
8036: }
8037: }
8038: return undef;
8039: }
8040:
8041: #
8042: # EXT resource caching routines
8043: #
8044:
8045: sub clear_EXT_cache_status {
8046: &delenv('cache.EXT.');
8047: }
8048:
8049: sub EXT_cache_status {
8050: my ($target_domain,$target_user) = @_;
8051: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8052: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8053: # We know already the user has no data
8054: return 1;
8055: } else {
8056: return 0;
8057: }
8058: }
8059:
8060: sub EXT_cache_set {
8061: my ($target_domain,$target_user) = @_;
8062: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8063: #&appenv({$cachename => time});
8064: }
8065:
8066: # --------------------------------------------------------- Value of a Variable
8067: sub EXT {
8068:
8069: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8070: unless ($varname) { return ''; }
8071: #get real user name/domain, courseid and symb
8072: my $courseid;
8073: my $publicuser;
8074: if ($symbparm) {
8075: $symbparm=&get_symb_from_alias($symbparm);
8076: }
8077: if (!($uname && $udom)) {
8078: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8079: if (!$symbparm) { $symbparm=$cursymb; }
8080: } else {
8081: $courseid=$env{'request.course.id'};
8082: }
8083: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8084: my $rest;
8085: if (defined($therest[0])) {
8086: $rest=join('.',@therest);
8087: } else {
8088: $rest='';
8089: }
8090:
8091: my $qualifierrest=$qualifier;
8092: if ($rest) { $qualifierrest.='.'.$rest; }
8093: my $spacequalifierrest=$space;
8094: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8095: if ($realm eq 'user') {
8096: # --------------------------------------------------------------- user.resource
8097: if ($space eq 'resource') {
8098: if ( (defined($Apache::lonhomework::parsing_a_problem)
8099: || defined($Apache::lonhomework::parsing_a_task))
8100: &&
8101: ($symbparm eq &symbread()) ) {
8102: # if we are in the middle of processing the resource the
8103: # get the value we are planning on committing
8104: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8105: return $Apache::lonhomework::results{$qualifierrest};
8106: } else {
8107: return $Apache::lonhomework::history{$qualifierrest};
8108: }
8109: } else {
8110: my %restored;
8111: if ($publicuser || $env{'request.state'} eq 'construct') {
8112: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8113: } else {
8114: %restored=&restore($symbparm,$courseid,$udom,$uname);
8115: }
8116: return $restored{$qualifierrest};
8117: }
8118: # ----------------------------------------------------------------- user.access
8119: } elsif ($space eq 'access') {
8120: # FIXME - not supporting calls for a specific user
8121: return &allowed($qualifier,$rest);
8122: # ------------------------------------------ user.preferences, user.environment
8123: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8124: if (($uname eq $env{'user.name'}) &&
8125: ($udom eq $env{'user.domain'})) {
8126: return $env{join('.',('environment',$qualifierrest))};
8127: } else {
8128: my %returnhash;
8129: if (!$publicuser) {
8130: %returnhash=&userenvironment($udom,$uname,
8131: $qualifierrest);
8132: }
8133: return $returnhash{$qualifierrest};
8134: }
8135: # ----------------------------------------------------------------- user.course
8136: } elsif ($space eq 'course') {
8137: # FIXME - not supporting calls for a specific user
8138: return $env{join('.',('request.course',$qualifier))};
8139: # ------------------------------------------------------------------- user.role
8140: } elsif ($space eq 'role') {
8141: # FIXME - not supporting calls for a specific user
8142: my ($role,$where)=split(/\./,$env{'request.role'});
8143: if ($qualifier eq 'value') {
8144: return $role;
8145: } elsif ($qualifier eq 'extent') {
8146: return $where;
8147: }
8148: # ----------------------------------------------------------------- user.domain
8149: } elsif ($space eq 'domain') {
8150: return $udom;
8151: # ------------------------------------------------------------------- user.name
8152: } elsif ($space eq 'name') {
8153: return $uname;
8154: # ---------------------------------------------------- Any other user namespace
8155: } else {
8156: my %reply;
8157: if (!$publicuser) {
8158: %reply=&get($space,[$qualifierrest],$udom,$uname);
8159: }
8160: return $reply{$qualifierrest};
8161: }
8162: } elsif ($realm eq 'query') {
8163: # ---------------------------------------------- pull stuff out of query string
8164: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8165: [$spacequalifierrest]);
8166: return $env{'form.'.$spacequalifierrest};
8167: } elsif ($realm eq 'request') {
8168: # ------------------------------------------------------------- request.browser
8169: if ($space eq 'browser') {
8170: if ($qualifier eq 'textremote') {
8171: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8172: return 1;
8173: } else {
8174: return 0;
8175: }
8176: } else {
8177: return $env{'browser.'.$qualifier};
8178: }
8179: # ------------------------------------------------------------ request.filename
8180: } else {
8181: return $env{'request.'.$spacequalifierrest};
8182: }
8183: } elsif ($realm eq 'course') {
8184: # ---------------------------------------------------------- course.description
8185: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8186: } elsif ($realm eq 'resource') {
8187:
8188: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8189: if (!$symbparm) { $symbparm=&symbread(); }
8190: }
8191:
8192: if ($space eq 'title') {
8193: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8194: return &gettitle($symbparm);
8195: }
8196:
8197: if ($space eq 'map') {
8198: my ($map) = &decode_symb($symbparm);
8199: return &symbread($map);
8200: }
8201: if ($space eq 'filename') {
8202: if ($symbparm) {
8203: return &clutter((&decode_symb($symbparm))[2]);
8204: }
8205: return &hreflocation('',$env{'request.filename'});
8206: }
8207:
8208: my ($section, $group, @groups);
8209: my ($courselevelm,$courselevel);
8210: if ($symbparm && defined($courseid) &&
8211: $courseid eq $env{'request.course.id'}) {
8212:
8213: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8214:
8215: # ----------------------------------------------------- Cascading lookup scheme
8216: my $symbp=$symbparm;
8217: my $mapp=&deversion((&decode_symb($symbp))[0]);
8218:
8219: my $symbparm=$symbp.'.'.$spacequalifierrest;
8220: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8221:
8222: if (($env{'user.name'} eq $uname) &&
8223: ($env{'user.domain'} eq $udom)) {
8224: $section=$env{'request.course.sec'};
8225: @groups = split(/:/,$env{'request.course.groups'});
8226: @groups=&sort_course_groups($courseid,@groups);
8227: } else {
8228: if (! defined($usection)) {
8229: $section=&getsection($udom,$uname,$courseid);
8230: } else {
8231: $section = $usection;
8232: }
8233: @groups = &get_users_groups($udom,$uname,$courseid);
8234: }
8235:
8236: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8237: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8238: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8239:
8240: $courselevel=$courseid.'.'.$spacequalifierrest;
8241: my $courselevelr=$courseid.'.'.$symbparm;
8242: $courselevelm=$courseid.'.'.$mapparm;
8243:
8244: # ----------------------------------------------------------- first, check user
8245:
8246: my $userreply=&resdata($uname,$udom,'user',
8247: ([$courselevelr,'resource'],
8248: [$courselevelm,'map' ],
8249: [$courselevel, 'course' ]));
8250: if (defined($userreply)) { return &get_reply($userreply); }
8251:
8252: # ------------------------------------------------ second, check some of course
8253: my $coursereply;
8254: if (@groups > 0) {
8255: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8256: $mapparm,$spacequalifierrest);
8257: if (defined($coursereply)) { return &get_reply($coursereply); }
8258: }
8259:
8260: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8261: $env{'course.'.$courseid.'.domain'},
8262: 'course',
8263: ([$seclevelr, 'resource'],
8264: [$seclevelm, 'map' ],
8265: [$seclevel, 'course' ],
8266: [$courselevelr,'resource']));
8267: if (defined($coursereply)) { return &get_reply($coursereply); }
8268:
8269: # ------------------------------------------------------ third, check map parms
8270: my %parmhash=();
8271: my $thisparm='';
8272: if (tie(%parmhash,'GDBM_File',
8273: $env{'request.course.fn'}.'_parms.db',
8274: &GDBM_READER(),0640)) {
8275: $thisparm=$parmhash{$symbparm};
8276: untie(%parmhash);
8277: }
8278: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8279: }
8280: # ------------------------------------------ fourth, look in resource metadata
8281:
8282: $spacequalifierrest=~s/\./\_/;
8283: my $filename;
8284: if (!$symbparm) { $symbparm=&symbread(); }
8285: if ($symbparm) {
8286: $filename=(&decode_symb($symbparm))[2];
8287: } else {
8288: $filename=$env{'request.filename'};
8289: }
8290: my $metadata=&metadata($filename,$spacequalifierrest);
8291: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8292: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8293: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8294:
8295: # ---------------------------------------------- fourth, look in rest of course
8296: if ($symbparm && defined($courseid) &&
8297: $courseid eq $env{'request.course.id'}) {
8298: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8299: $env{'course.'.$courseid.'.domain'},
8300: 'course',
8301: ([$courselevelm,'map' ],
8302: [$courselevel, 'course']));
8303: if (defined($coursereply)) { return &get_reply($coursereply); }
8304: }
8305: # ------------------------------------------------------------------ Cascade up
8306: unless ($space eq '0') {
8307: my @parts=split(/_/,$space);
8308: my $id=pop(@parts);
8309: my $part=join('_',@parts);
8310: if ($part eq '') { $part='0'; }
8311: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8312: $symbparm,$udom,$uname,$section,1);
8313: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8314: }
8315: if ($recurse) { return undef; }
8316: my $pack_def=&packages_tab_default($filename,$varname);
8317: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8318: # ---------------------------------------------------- Any other user namespace
8319: } elsif ($realm eq 'environment') {
8320: # ----------------------------------------------------------------- environment
8321: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8322: return $env{'environment.'.$spacequalifierrest};
8323: } else {
8324: if ($uname eq 'anonymous' && $udom eq '') {
8325: return '';
8326: }
8327: my %returnhash=&userenvironment($udom,$uname,
8328: $spacequalifierrest);
8329: return $returnhash{$spacequalifierrest};
8330: }
8331: } elsif ($realm eq 'system') {
8332: # ----------------------------------------------------------------- system.time
8333: if ($space eq 'time') {
8334: return time;
8335: }
8336: } elsif ($realm eq 'server') {
8337: # ----------------------------------------------------------------- system.time
8338: if ($space eq 'name') {
8339: return $ENV{'SERVER_NAME'};
8340: }
8341: }
8342: return '';
8343: }
8344:
8345: sub get_reply {
8346: my ($reply_value) = @_;
8347: if (ref($reply_value) eq 'ARRAY') {
8348: if (wantarray) {
8349: return @$reply_value;
8350: }
8351: return $reply_value->[0];
8352: } else {
8353: return $reply_value;
8354: }
8355: }
8356:
8357: sub check_group_parms {
8358: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8359: my @groupitems = ();
8360: my $resultitem;
8361: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8362: foreach my $group (@{$groups}) {
8363: foreach my $level (@levels) {
8364: my $item = $courseid.'.['.$group.'].'.$level->[0];
8365: push(@groupitems,[$item,$level->[1]]);
8366: }
8367: }
8368: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8369: $env{'course.'.$courseid.'.domain'},
8370: 'course',@groupitems);
8371: return $coursereply;
8372: }
8373:
8374: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8375: my ($courseid,@groups) = @_;
8376: @groups = sort(@groups);
8377: return @groups;
8378: }
8379:
8380: sub packages_tab_default {
8381: my ($uri,$varname)=@_;
8382: my (undef,$part,$name)=split(/\./,$varname);
8383:
8384: my (@extension,@specifics,$do_default);
8385: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8386: my ($pack_type,$pack_part)=split(/_/,$package,2);
8387: if ($pack_type eq 'default') {
8388: $do_default=1;
8389: } elsif ($pack_type eq 'extension') {
8390: push(@extension,[$package,$pack_type,$pack_part]);
8391: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8392: # only look at packages defaults for packages that this id is
8393: push(@specifics,[$package,$pack_type,$pack_part]);
8394: }
8395: }
8396: # first look for a package that matches the requested part id
8397: foreach my $package (@specifics) {
8398: my (undef,$pack_type,$pack_part)=@{$package};
8399: next if ($pack_part ne $part);
8400: if (defined($packagetab{"$pack_type&$name&default"})) {
8401: return $packagetab{"$pack_type&$name&default"};
8402: }
8403: }
8404: # look for any possible matching non extension_ package
8405: foreach my $package (@specifics) {
8406: my (undef,$pack_type,$pack_part)=@{$package};
8407: if (defined($packagetab{"$pack_type&$name&default"})) {
8408: return $packagetab{"$pack_type&$name&default"};
8409: }
8410: if ($pack_type eq 'part') { $pack_part='0'; }
8411: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8412: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8413: }
8414: }
8415: # look for any posible extension_ match
8416: foreach my $package (@extension) {
8417: my ($package,$pack_type)=@{$package};
8418: if (defined($packagetab{"$pack_type&$name&default"})) {
8419: return $packagetab{"$pack_type&$name&default"};
8420: }
8421: if (defined($packagetab{$package."&$name&default"})) {
8422: return $packagetab{$package."&$name&default"};
8423: }
8424: }
8425: # look for a global default setting
8426: if ($do_default && defined($packagetab{"default&$name&default"})) {
8427: return $packagetab{"default&$name&default"};
8428: }
8429: return undef;
8430: }
8431:
8432: sub add_prefix_and_part {
8433: my ($prefix,$part)=@_;
8434: my $keyroot;
8435: if (defined($prefix) && $prefix !~ /^__/) {
8436: # prefix that has a part already
8437: $keyroot=$prefix;
8438: } elsif (defined($prefix)) {
8439: # prefix that is missing a part
8440: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8441: } else {
8442: # no prefix at all
8443: if (defined($part)) { $keyroot='_'.$part; }
8444: }
8445: return $keyroot;
8446: }
8447:
8448: # ---------------------------------------------------------------- Get metadata
8449:
8450: my %metaentry;
8451: my %importedpartids;
8452: sub metadata {
8453: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8454: $uri=&declutter($uri);
8455: # if it is a non metadata possible uri return quickly
8456: if (($uri eq '') ||
8457: (($uri =~ m|^/*adm/|) &&
8458: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8459: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^\*uploaded\/.+\.sequence$/) ) {
8460: return undef;
8461: }
8462: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8463: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8464: return undef;
8465: }
8466: my $filename=$uri;
8467: $uri=~s/\.meta$//;
8468: #
8469: # Is the metadata already cached?
8470: # Look at timestamp of caching
8471: # Everything is cached by the main uri, libraries are never directly cached
8472: #
8473: if (!defined($liburi)) {
8474: my ($result,$cached)=&is_cached_new('meta',$uri);
8475: if (defined($cached)) { return $result->{':'.$what}; }
8476: }
8477: {
8478: # Imported parts would go here
8479: my %importedids=();
8480: my @origfileimportpartids=();
8481: my $importedparts=0;
8482: #
8483: # Is this a recursive call for a library?
8484: #
8485: # if (! exists($metacache{$uri})) {
8486: # $metacache{$uri}={};
8487: # }
8488: my $cachetime = 60*60;
8489: if ($liburi) {
8490: $liburi=&declutter($liburi);
8491: $filename=$liburi;
8492: } else {
8493: &devalidate_cache_new('meta',$uri);
8494: undef(%metaentry);
8495: }
8496: my %metathesekeys=();
8497: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8498: my $metastring;
8499: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8500: my $which = &hreflocation('','/'.($liburi || $uri));
8501: $metastring =
8502: &Apache::lonnet::ssi_body($which,
8503: ('grade_target' => 'meta'));
8504: $cachetime = 1; # only want this cached in the child not long term
8505: } elsif ($uri !~ m -^(editupload)/-) {
8506: my $file=&filelocation('',&clutter($filename));
8507: #push(@{$metaentry{$uri.'.file'}},$file);
8508: $metastring=&getfile($file);
8509: }
8510: my $parser=HTML::LCParser->new(\$metastring);
8511: my $token;
8512: undef %metathesekeys;
8513: while ($token=$parser->get_token) {
8514: if ($token->[0] eq 'S') {
8515: if (defined($token->[2]->{'package'})) {
8516: #
8517: # This is a package - get package info
8518: #
8519: my $package=$token->[2]->{'package'};
8520: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8521: if (defined($token->[2]->{'id'})) {
8522: $keyroot.='_'.$token->[2]->{'id'};
8523: }
8524: if ($metaentry{':packages'}) {
8525: $metaentry{':packages'}.=','.$package.$keyroot;
8526: } else {
8527: $metaentry{':packages'}=$package.$keyroot;
8528: }
8529: foreach my $pack_entry (keys(%packagetab)) {
8530: my $part=$keyroot;
8531: $part=~s/^\_//;
8532: if ($pack_entry=~/^\Q$package\E\&/ ||
8533: $pack_entry=~/^\Q$package\E_0\&/) {
8534: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8535: # ignore package.tab specified default values
8536: # here &package_tab_default() will fetch those
8537: if ($subp eq 'default') { next; }
8538: my $value=$packagetab{$pack_entry};
8539: my $unikey;
8540: if ($pack =~ /_0$/) {
8541: $unikey='parameter_0_'.$name;
8542: $part=0;
8543: } else {
8544: $unikey='parameter'.$keyroot.'_'.$name;
8545: }
8546: if ($subp eq 'display') {
8547: $value.=' [Part: '.$part.']';
8548: }
8549: $metaentry{':'.$unikey.'.part'}=$part;
8550: $metathesekeys{$unikey}=1;
8551: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8552: $metaentry{':'.$unikey.'.'.$subp}=$value;
8553: }
8554: if (defined($metaentry{':'.$unikey.'.default'})) {
8555: $metaentry{':'.$unikey}=
8556: $metaentry{':'.$unikey.'.default'};
8557: }
8558: }
8559: }
8560: } else {
8561: #
8562: # This is not a package - some other kind of start tag
8563: #
8564: my $entry=$token->[1];
8565: my $unikey='';
8566:
8567: if ($entry eq 'import') {
8568: #
8569: # Importing a library here
8570: #
8571: my $location=$parser->get_text('/import');
8572: my $dir=$filename;
8573: $dir=~s|[^/]*$||;
8574: $location=&filelocation($dir,$location);
8575:
8576: my $importmode=$token->[2]->{'importmode'};
8577: if ($importmode eq 'problem') {
8578: # Import as problem/response
8579: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8580: } elsif ($importmode eq 'part') {
8581: # Import as part(s)
8582: $importedparts=1;
8583: # We need to get the original file and the imported file to get the part order correct
8584: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
8585: # Load and inspect original file
8586: if ($#origfileimportpartids<0) {
8587: undef(%importedpartids);
8588: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
8589: my $origfile=&getfile($origfilelocation);
8590: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8591: }
8592:
8593: # Load and inspect imported file
8594: my $impfile=&getfile($location);
8595: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8596: if ($#impfilepartids>=0) {
8597: # This problem had parts
8598: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
8599: } else {
8600: # Importing by turning a single problem into a problem part
8601: # It gets the import-tags ID as part-ID
8602: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
8603: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
8604: }
8605: } else {
8606: # Normal import
8607: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8608: if (defined($token->[2]->{'id'})) {
8609: $unikey.='_'.$token->[2]->{'id'};
8610: }
8611: }
8612:
8613: if ($depthcount<20) {
8614: my $metadata =
8615: &metadata($uri,'keys', $location,$unikey,
8616: $depthcount+1);
8617: foreach my $meta (split(',',$metadata)) {
8618: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8619: $metathesekeys{$meta}=1;
8620: }
8621:
8622: }
8623: } else {
8624: #
8625: # Not importing, some other kind of non-package, non-library start tag
8626: #
8627: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
8628: if (defined($token->[2]->{'id'})) {
8629: $unikey.='_'.$token->[2]->{'id'};
8630: }
8631: if (defined($token->[2]->{'name'})) {
8632: $unikey.='_'.$token->[2]->{'name'};
8633: }
8634: $metathesekeys{$unikey}=1;
8635: foreach my $param (@{$token->[3]}) {
8636: $metaentry{':'.$unikey.'.'.$param} =
8637: $token->[2]->{$param};
8638: }
8639: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8640: my $default=$metaentry{':'.$unikey.'.default'};
8641: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8642: # only ws inside the tag, and not in default, so use default
8643: # as value
8644: $metaentry{':'.$unikey}=$default;
8645: } elsif ( $internaltext =~ /\S/ ) {
8646: # something interesting inside the tag
8647: $metaentry{':'.$unikey}=$internaltext;
8648: } else {
8649: # no interesting values, don't set a default
8650: }
8651: # end of not-a-package not-a-library import
8652: }
8653: # end of not-a-package start tag
8654: }
8655: # the next is the end of "start tag"
8656: }
8657: }
8658: my ($extension) = ($uri =~ /\.(\w+)$/);
8659: $extension = lc($extension);
8660: if ($extension eq 'htm') { $extension='html'; }
8661:
8662: foreach my $key (keys(%packagetab)) {
8663: #no specific packages #how's our extension
8664: if ($key!~/^extension_\Q$extension\E&/) { next; }
8665: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8666: \%metathesekeys);
8667: }
8668:
8669: if (!exists($metaentry{':packages'})
8670: || $packagetab{"import_defaults&extension_$extension"}) {
8671: foreach my $key (keys(%packagetab)) {
8672: #no specific packages well let's get default then
8673: if ($key!~/^default&/) { next; }
8674: &metadata_create_package_def($uri,$key,'default',
8675: \%metathesekeys);
8676: }
8677: }
8678: # are there custom rights to evaluate
8679: if ($metaentry{':copyright'} eq 'custom') {
8680:
8681: #
8682: # Importing a rights file here
8683: #
8684: unless ($depthcount) {
8685: my $location=$metaentry{':customdistributionfile'};
8686: my $dir=$filename;
8687: $dir=~s|[^/]*$||;
8688: $location=&filelocation($dir,$location);
8689: my $rights_metadata =
8690: &metadata($uri,'keys',$location,'_rights',
8691: $depthcount+1);
8692: foreach my $rights (split(',',$rights_metadata)) {
8693: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8694: $metathesekeys{$rights}=1;
8695: }
8696: }
8697: }
8698: # uniqifiy package listing
8699: my %seen;
8700: my @uniq_packages =
8701: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8702: $metaentry{':packages'} = join(',',@uniq_packages);
8703:
8704: if ($importedparts) {
8705: # We had imported parts and need to rebuild partorder
8706: $metaentry{':partorder'}='';
8707: $metathesekeys{'partorder'}=1;
8708: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
8709: if ($origfileimportpartids[$index] eq 'part') {
8710: # original part, part of the problem
8711: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
8712: } else {
8713: # we have imported parts at this position
8714: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
8715: }
8716: }
8717: $metaentry{':partorder'}=~s/^\,//;
8718: }
8719:
8720: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8721: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8722: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8723: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8724: # this is the end of "was not already recently cached
8725: }
8726: return $metaentry{':'.$what};
8727: }
8728:
8729: sub metadata_create_package_def {
8730: my ($uri,$key,$package,$metathesekeys)=@_;
8731: my ($pack,$name,$subp)=split(/\&/,$key);
8732: if ($subp eq 'default') { next; }
8733:
8734: if (defined($metaentry{':packages'})) {
8735: $metaentry{':packages'}.=','.$package;
8736: } else {
8737: $metaentry{':packages'}=$package;
8738: }
8739: my $value=$packagetab{$key};
8740: my $unikey;
8741: $unikey='parameter_0_'.$name;
8742: $metaentry{':'.$unikey.'.part'}=0;
8743: $$metathesekeys{$unikey}=1;
8744: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8745: $metaentry{':'.$unikey.'.'.$subp}=$value;
8746: }
8747: if (defined($metaentry{':'.$unikey.'.default'})) {
8748: $metaentry{':'.$unikey}=
8749: $metaentry{':'.$unikey.'.default'};
8750: }
8751: }
8752:
8753: sub metadata_generate_part0 {
8754: my ($metadata,$metacache,$uri) = @_;
8755: my %allnames;
8756: foreach my $metakey (keys(%$metadata)) {
8757: if ($metakey=~/^parameter\_(.*)/) {
8758: my $part=$$metacache{':'.$metakey.'.part'};
8759: my $name=$$metacache{':'.$metakey.'.name'};
8760: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8761: $allnames{$name}=$part;
8762: }
8763: }
8764: }
8765: foreach my $name (keys(%allnames)) {
8766: $$metadata{"parameter_0_$name"}=1;
8767: my $key=":parameter_0_$name";
8768: $$metacache{"$key.part"}='0';
8769: $$metacache{"$key.name"}=$name;
8770: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8771: $allnames{$name}.'_'.$name.
8772: '.type'};
8773: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8774: '.display'};
8775: my $expr='[Part: '.$allnames{$name}.']';
8776: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8777: $$metacache{"$key.display"}=$olddis;
8778: }
8779: }
8780:
8781: # ------------------------------------------------------ Devalidate title cache
8782:
8783: sub devalidate_title_cache {
8784: my ($url)=@_;
8785: if (!$env{'request.course.id'}) { return; }
8786: my $symb=&symbread($url);
8787: if (!$symb) { return; }
8788: my $key=$env{'request.course.id'}."\0".$symb;
8789: &devalidate_cache_new('title',$key);
8790: }
8791:
8792: # ------------------------------------------------- Get the title of a course
8793:
8794: sub current_course_title {
8795: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8796: }
8797: # ------------------------------------------------- Get the title of a resource
8798:
8799: sub gettitle {
8800: my $urlsymb=shift;
8801: my $symb=&symbread($urlsymb);
8802: if ($symb) {
8803: my $key=$env{'request.course.id'}."\0".$symb;
8804: my ($result,$cached)=&is_cached_new('title',$key);
8805: if (defined($cached)) {
8806: return $result;
8807: }
8808: my ($map,$resid,$url)=&decode_symb($symb);
8809: my $title='';
8810: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8811: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8812: } else {
8813: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8814: &GDBM_READER(),0640)) {
8815: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8816: $title=$bighash{'title_'.$mapid.'.'.$resid};
8817: untie(%bighash);
8818: }
8819: }
8820: $title=~s/\&colon\;/\:/gs;
8821: if ($title) {
8822: return &do_cache_new('title',$key,$title,600);
8823: }
8824: $urlsymb=$url;
8825: }
8826: my $title=&metadata($urlsymb,'title');
8827: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8828: return $title;
8829: }
8830:
8831: sub get_slot {
8832: my ($which,$cnum,$cdom)=@_;
8833: if (!$cnum || !$cdom) {
8834: (undef,my $courseid)=&whichuser();
8835: $cdom=$env{'course.'.$courseid.'.domain'};
8836: $cnum=$env{'course.'.$courseid.'.num'};
8837: }
8838: my $key=join("\0",'slots',$cdom,$cnum,$which);
8839: my %slotinfo;
8840: if (exists($remembered{$key})) {
8841: $slotinfo{$which} = $remembered{$key};
8842: } else {
8843: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8844: &Apache::lonhomework::showhash(%slotinfo);
8845: my ($tmp)=keys(%slotinfo);
8846: if ($tmp=~/^error:/) { return (); }
8847: $remembered{$key} = $slotinfo{$which};
8848: }
8849: if (ref($slotinfo{$which}) eq 'HASH') {
8850: return %{$slotinfo{$which}};
8851: }
8852: return $slotinfo{$which};
8853: }
8854: # ------------------------------------------------- Update symbolic store links
8855:
8856: sub symblist {
8857: my ($mapname,%newhash)=@_;
8858: $mapname=&deversion(&declutter($mapname));
8859: my %hash;
8860: if (($env{'request.course.fn'}) && (%newhash)) {
8861: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8862: &GDBM_WRCREAT(),0640)) {
8863: foreach my $url (keys(%newhash)) {
8864: next if ($url eq 'last_known'
8865: && $env{'form.no_update_last_known'});
8866: $hash{declutter($url)}=&encode_symb($mapname,
8867: $newhash{$url}->[1],
8868: $newhash{$url}->[0]);
8869: }
8870: if (untie(%hash)) {
8871: return 'ok';
8872: }
8873: }
8874: }
8875: return 'error';
8876: }
8877:
8878: # --------------------------------------------------------------- Verify a symb
8879:
8880: sub symbverify {
8881: my ($symb,$thisurl)=@_;
8882: my $thisfn=$thisurl;
8883: $thisfn=&declutter($thisfn);
8884: # direct jump to resource in page or to a sequence - will construct own symbs
8885: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8886: # check URL part
8887: my ($map,$resid,$url)=&decode_symb($symb);
8888:
8889: unless ($url eq $thisfn) { return 0; }
8890:
8891: $symb=&symbclean($symb);
8892: $thisurl=&deversion($thisurl);
8893: $thisfn=&deversion($thisfn);
8894:
8895: my %bighash;
8896: my $okay=0;
8897:
8898: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8899: &GDBM_READER(),0640)) {
8900: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
8901: $thisurl =~ s/\?.+$//;
8902: }
8903: my $ids=$bighash{'ids_'.&clutter($thisurl)};
8904: unless ($ids) {
8905: $ids=$bighash{'ids_/'.$thisurl};
8906: }
8907: if ($ids) {
8908: # ------------------------------------------------------------------- Has ID(s)
8909: foreach my $id (split(/\,/,$ids)) {
8910: my ($mapid,$resid)=split(/\./,$id);
8911: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
8912: $symb =~ s/\?.+$//;
8913: }
8914: if (
8915: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
8916: eq $symb) {
8917: if (($env{'request.role.adv'}) ||
8918: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
8919: $okay=1;
8920: }
8921: }
8922: }
8923: }
8924: untie(%bighash);
8925: }
8926: return $okay;
8927: }
8928:
8929: # --------------------------------------------------------------- Clean-up symb
8930:
8931: sub symbclean {
8932: my $symb=shift;
8933: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8934: # remove version from map
8935: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
8936:
8937: # remove version from URL
8938: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
8939:
8940: # remove wrapper
8941:
8942: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
8943: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
8944: return $symb;
8945: }
8946:
8947: # ---------------------------------------------- Split symb to find map and url
8948:
8949: sub encode_symb {
8950: my ($map,$resid,$url)=@_;
8951: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
8952: }
8953:
8954: sub decode_symb {
8955: my $symb=shift;
8956: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
8957: my ($map,$resid,$url)=split(/___/,$symb);
8958: return (&fixversion($map),$resid,&fixversion($url));
8959: }
8960:
8961: sub fixversion {
8962: my $fn=shift;
8963: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
8964: my %bighash;
8965: my $uri=&clutter($fn);
8966: my $key=$env{'request.course.id'}.'_'.$uri;
8967: # is this cached?
8968: my ($result,$cached)=&is_cached_new('courseresversion',$key);
8969: if (defined($cached)) { return $result; }
8970: # unfortunately not cached, or expired
8971: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8972: &GDBM_READER(),0640)) {
8973: if ($bighash{'version_'.$uri}) {
8974: my $version=$bighash{'version_'.$uri};
8975: unless (($version eq 'mostrecent') ||
8976: ($version==&getversion($uri))) {
8977: $uri=~s/\.(\w+)$/\.$version\.$1/;
8978: }
8979: }
8980: untie %bighash;
8981: }
8982: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
8983: }
8984:
8985: sub deversion {
8986: my $url=shift;
8987: $url=~s/\.\d+\.(\w+)$/\.$1/;
8988: return $url;
8989: }
8990:
8991: # ------------------------------------------------------ Return symb list entry
8992:
8993: sub symbread {
8994: my ($thisfn,$donotrecurse)=@_;
8995: my $cache_str='request.symbread.cached.'.$thisfn;
8996: if (defined($env{$cache_str})) { return $env{$cache_str}; }
8997: # no filename provided? try from environment
8998: unless ($thisfn) {
8999: if ($env{'request.symb'}) {
9000: return $env{$cache_str}=&symbclean($env{'request.symb'});
9001: }
9002: $thisfn=$env{'request.filename'};
9003: }
9004: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9005: # is that filename actually a symb? Verify, clean, and return
9006: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9007: if (&symbverify($thisfn,$1)) {
9008: return $env{$cache_str}=&symbclean($thisfn);
9009: }
9010: }
9011: $thisfn=declutter($thisfn);
9012: my %hash;
9013: my %bighash;
9014: my $syval='';
9015: if (($env{'request.course.fn'}) && ($thisfn)) {
9016: my $targetfn = $thisfn;
9017: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9018: $targetfn = 'adm/wrapper/'.$thisfn;
9019: }
9020: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9021: $targetfn=$1;
9022: }
9023: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9024: &GDBM_READER(),0640)) {
9025: $syval=$hash{$targetfn};
9026: untie(%hash);
9027: }
9028: # ---------------------------------------------------------- There was an entry
9029: if ($syval) {
9030: #unless ($syval=~/\_\d+$/) {
9031: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9032: #&appenv({'request.ambiguous' => $thisfn});
9033: #return $env{$cache_str}='';
9034: #}
9035: #$syval.=$1;
9036: #}
9037: } else {
9038: # ------------------------------------------------------- Was not in symb table
9039: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9040: &GDBM_READER(),0640)) {
9041: # ---------------------------------------------- Get ID(s) for current resource
9042: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9043: unless ($ids) {
9044: $ids=$bighash{'ids_/'.$thisfn};
9045: }
9046: unless ($ids) {
9047: # alias?
9048: $ids=$bighash{'mapalias_'.$thisfn};
9049: }
9050: if ($ids) {
9051: # ------------------------------------------------------------------- Has ID(s)
9052: my @possibilities=split(/\,/,$ids);
9053: if ($#possibilities==0) {
9054: # ----------------------------------------------- There is only one possibility
9055: my ($mapid,$resid)=split(/\./,$ids);
9056: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9057: $resid,$thisfn);
9058: } elsif (!$donotrecurse) {
9059: # ------------------------------------------ There is more than one possibility
9060: my $realpossible=0;
9061: foreach my $id (@possibilities) {
9062: my $file=$bighash{'src_'.$id};
9063: if (&allowed('bre',$file)) {
9064: my ($mapid,$resid)=split(/\./,$id);
9065: if ($bighash{'map_type_'.$mapid} ne 'page') {
9066: $realpossible++;
9067: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9068: $resid,$thisfn);
9069: }
9070: }
9071: }
9072: if ($realpossible!=1) { $syval=''; }
9073: } else {
9074: $syval='';
9075: }
9076: }
9077: untie(%bighash)
9078: }
9079: }
9080: if ($syval) {
9081: return $env{$cache_str}=$syval;
9082: }
9083: }
9084: &appenv({'request.ambiguous' => $thisfn});
9085: return $env{$cache_str}='';
9086: }
9087:
9088: # ---------------------------------------------------------- Return random seed
9089:
9090: sub numval {
9091: my $txt=shift;
9092: $txt=~tr/A-J/0-9/;
9093: $txt=~tr/a-j/0-9/;
9094: $txt=~tr/K-T/0-9/;
9095: $txt=~tr/k-t/0-9/;
9096: $txt=~tr/U-Z/0-5/;
9097: $txt=~tr/u-z/0-5/;
9098: $txt=~s/\D//g;
9099: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9100: return int($txt);
9101: }
9102:
9103: sub numval2 {
9104: my $txt=shift;
9105: $txt=~tr/A-J/0-9/;
9106: $txt=~tr/a-j/0-9/;
9107: $txt=~tr/K-T/0-9/;
9108: $txt=~tr/k-t/0-9/;
9109: $txt=~tr/U-Z/0-5/;
9110: $txt=~tr/u-z/0-5/;
9111: $txt=~s/\D//g;
9112: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9113: my $total;
9114: foreach my $val (@txts) { $total+=$val; }
9115: if ($_64bit) { if ($total > 2**32) { return -1; } }
9116: return int($total);
9117: }
9118:
9119: sub numval3 {
9120: use integer;
9121: my $txt=shift;
9122: $txt=~tr/A-J/0-9/;
9123: $txt=~tr/a-j/0-9/;
9124: $txt=~tr/K-T/0-9/;
9125: $txt=~tr/k-t/0-9/;
9126: $txt=~tr/U-Z/0-5/;
9127: $txt=~tr/u-z/0-5/;
9128: $txt=~s/\D//g;
9129: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9130: my $total;
9131: foreach my $val (@txts) { $total+=$val; }
9132: if ($_64bit) { $total=(($total<<32)>>32); }
9133: return $total;
9134: }
9135:
9136: sub digest {
9137: my ($data)=@_;
9138: my $digest=&Digest::MD5::md5($data);
9139: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9140: my ($e,$f);
9141: {
9142: use integer;
9143: $e=($a+$b);
9144: $f=($c+$d);
9145: if ($_64bit) {
9146: $e=(($e<<32)>>32);
9147: $f=(($f<<32)>>32);
9148: }
9149: }
9150: if (wantarray) {
9151: return ($e,$f);
9152: } else {
9153: my $g;
9154: {
9155: use integer;
9156: $g=($e+$f);
9157: if ($_64bit) {
9158: $g=(($g<<32)>>32);
9159: }
9160: }
9161: return $g;
9162: }
9163: }
9164:
9165: sub latest_rnd_algorithm_id {
9166: return '64bit5';
9167: }
9168:
9169: sub get_rand_alg {
9170: my ($courseid)=@_;
9171: if (!$courseid) { $courseid=(&whichuser())[1]; }
9172: if ($courseid) {
9173: return $env{"course.$courseid.rndseed"};
9174: }
9175: return &latest_rnd_algorithm_id();
9176: }
9177:
9178: sub validCODE {
9179: my ($CODE)=@_;
9180: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9181: return 0;
9182: }
9183:
9184: sub getCODE {
9185: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9186: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9187: defined($Apache::lonhomework::parsing_a_task) ) &&
9188: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9189: return $Apache::lonhomework::history{'resource.CODE'};
9190: }
9191: return undef;
9192: }
9193:
9194: sub rndseed {
9195: my ($symb,$courseid,$domain,$username)=@_;
9196: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9197: if (!defined($symb)) {
9198: unless ($symb=$wsymb) { return time; }
9199: }
9200: if (!$courseid) { $courseid=$wcourseid; }
9201: if (!$domain) { $domain=$wdomain; }
9202: if (!$username) { $username=$wusername }
9203: my $which=&get_rand_alg();
9204:
9205: if (defined(&getCODE())) {
9206: if ($which eq '64bit5') {
9207: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9208: } elsif ($which eq '64bit4') {
9209: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9210: } else {
9211: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9212: }
9213: } elsif ($which eq '64bit5') {
9214: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9215: } elsif ($which eq '64bit4') {
9216: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9217: } elsif ($which eq '64bit3') {
9218: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9219: } elsif ($which eq '64bit2') {
9220: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9221: } elsif ($which eq '64bit') {
9222: return &rndseed_64bit($symb,$courseid,$domain,$username);
9223: }
9224: return &rndseed_32bit($symb,$courseid,$domain,$username);
9225: }
9226:
9227: sub rndseed_32bit {
9228: my ($symb,$courseid,$domain,$username)=@_;
9229: {
9230: use integer;
9231: my $symbchck=unpack("%32C*",$symb) << 27;
9232: my $symbseed=numval($symb) << 22;
9233: my $namechck=unpack("%32C*",$username) << 17;
9234: my $nameseed=numval($username) << 12;
9235: my $domainseed=unpack("%32C*",$domain) << 7;
9236: my $courseseed=unpack("%32C*",$courseid);
9237: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9238: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9239: #&logthis("rndseed :$num:$symb");
9240: if ($_64bit) { $num=(($num<<32)>>32); }
9241: return $num;
9242: }
9243: }
9244:
9245: sub rndseed_64bit {
9246: my ($symb,$courseid,$domain,$username)=@_;
9247: {
9248: use integer;
9249: my $symbchck=unpack("%32S*",$symb) << 21;
9250: my $symbseed=numval($symb) << 10;
9251: my $namechck=unpack("%32S*",$username);
9252:
9253: my $nameseed=numval($username) << 21;
9254: my $domainseed=unpack("%32S*",$domain) << 10;
9255: my $courseseed=unpack("%32S*",$courseid);
9256:
9257: my $num1=$symbchck+$symbseed+$namechck;
9258: my $num2=$nameseed+$domainseed+$courseseed;
9259: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9260: #&logthis("rndseed :$num:$symb");
9261: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9262: return "$num1,$num2";
9263: }
9264: }
9265:
9266: sub rndseed_64bit2 {
9267: my ($symb,$courseid,$domain,$username)=@_;
9268: {
9269: use integer;
9270: # strings need to be an even # of cahracters long, it it is odd the
9271: # last characters gets thrown away
9272: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9273: my $symbseed=numval($symb) << 10;
9274: my $namechck=unpack("%32S*",$username.' ');
9275:
9276: my $nameseed=numval($username) << 21;
9277: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9278: my $courseseed=unpack("%32S*",$courseid.' ');
9279:
9280: my $num1=$symbchck+$symbseed+$namechck;
9281: my $num2=$nameseed+$domainseed+$courseseed;
9282: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9283: #&logthis("rndseed :$num:$symb");
9284: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9285: return "$num1,$num2";
9286: }
9287: }
9288:
9289: sub rndseed_64bit3 {
9290: my ($symb,$courseid,$domain,$username)=@_;
9291: {
9292: use integer;
9293: # strings need to be an even # of cahracters long, it it is odd the
9294: # last characters gets thrown away
9295: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9296: my $symbseed=numval2($symb) << 10;
9297: my $namechck=unpack("%32S*",$username.' ');
9298:
9299: my $nameseed=numval2($username) << 21;
9300: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9301: my $courseseed=unpack("%32S*",$courseid.' ');
9302:
9303: my $num1=$symbchck+$symbseed+$namechck;
9304: my $num2=$nameseed+$domainseed+$courseseed;
9305: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9306: #&logthis("rndseed :$num1:$num2:$_64bit");
9307: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9308:
9309: return "$num1:$num2";
9310: }
9311: }
9312:
9313: sub rndseed_64bit4 {
9314: my ($symb,$courseid,$domain,$username)=@_;
9315: {
9316: use integer;
9317: # strings need to be an even # of cahracters long, it it is odd the
9318: # last characters gets thrown away
9319: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9320: my $symbseed=numval3($symb) << 10;
9321: my $namechck=unpack("%32S*",$username.' ');
9322:
9323: my $nameseed=numval3($username) << 21;
9324: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9325: my $courseseed=unpack("%32S*",$courseid.' ');
9326:
9327: my $num1=$symbchck+$symbseed+$namechck;
9328: my $num2=$nameseed+$domainseed+$courseseed;
9329: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9330: #&logthis("rndseed :$num1:$num2:$_64bit");
9331: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9332:
9333: return "$num1:$num2";
9334: }
9335: }
9336:
9337: sub rndseed_64bit5 {
9338: my ($symb,$courseid,$domain,$username)=@_;
9339: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9340: return "$num1:$num2";
9341: }
9342:
9343: sub rndseed_CODE_64bit {
9344: my ($symb,$courseid,$domain,$username)=@_;
9345: {
9346: use integer;
9347: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9348: my $symbseed=numval2($symb);
9349: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9350: my $CODEseed=numval(&getCODE());
9351: my $courseseed=unpack("%32S*",$courseid.' ');
9352: my $num1=$symbseed+$CODEchck;
9353: my $num2=$CODEseed+$courseseed+$symbchck;
9354: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9355: #&logthis("rndseed :$num1:$num2:$symb");
9356: if ($_64bit) { $num1=(($num1<<32)>>32); }
9357: if ($_64bit) { $num2=(($num2<<32)>>32); }
9358: return "$num1:$num2";
9359: }
9360: }
9361:
9362: sub rndseed_CODE_64bit4 {
9363: my ($symb,$courseid,$domain,$username)=@_;
9364: {
9365: use integer;
9366: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9367: my $symbseed=numval3($symb);
9368: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9369: my $CODEseed=numval3(&getCODE());
9370: my $courseseed=unpack("%32S*",$courseid.' ');
9371: my $num1=$symbseed+$CODEchck;
9372: my $num2=$CODEseed+$courseseed+$symbchck;
9373: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9374: #&logthis("rndseed :$num1:$num2:$symb");
9375: if ($_64bit) { $num1=(($num1<<32)>>32); }
9376: if ($_64bit) { $num2=(($num2<<32)>>32); }
9377: return "$num1:$num2";
9378: }
9379: }
9380:
9381: sub rndseed_CODE_64bit5 {
9382: my ($symb,$courseid,$domain,$username)=@_;
9383: my $code = &getCODE();
9384: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9385: return "$num1:$num2";
9386: }
9387:
9388: sub setup_random_from_rndseed {
9389: my ($rndseed)=@_;
9390: if ($rndseed =~/([,:])/) {
9391: my ($num1,$num2)=split(/[,:]/,$rndseed);
9392: &Math::Random::random_set_seed(abs($num1),abs($num2));
9393: } else {
9394: &Math::Random::random_set_seed_from_phrase($rndseed);
9395: }
9396: }
9397:
9398: sub latest_receipt_algorithm_id {
9399: return 'receipt3';
9400: }
9401:
9402: sub recunique {
9403: my $fucourseid=shift;
9404: my $unique;
9405: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9406: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9407: $unique=$env{"course.$fucourseid.internal.encseed"};
9408: } else {
9409: $unique=$perlvar{'lonReceipt'};
9410: }
9411: return unpack("%32C*",$unique);
9412: }
9413:
9414: sub recprefix {
9415: my $fucourseid=shift;
9416: my $prefix;
9417: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9418: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9419: $prefix=$env{"course.$fucourseid.internal.encpref"};
9420: } else {
9421: $prefix=$perlvar{'lonHostID'};
9422: }
9423: return unpack("%32C*",$prefix);
9424: }
9425:
9426: sub ireceipt {
9427: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9428:
9429: my $return =&recprefix($fucourseid).'-';
9430:
9431: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9432: $env{'request.state'} eq 'construct') {
9433: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9434: return $return;
9435: }
9436:
9437: my $cuname=unpack("%32C*",$funame);
9438: my $cudom=unpack("%32C*",$fudom);
9439: my $cucourseid=unpack("%32C*",$fucourseid);
9440: my $cusymb=unpack("%32C*",$fusymb);
9441: my $cunique=&recunique($fucourseid);
9442: my $cpart=unpack("%32S*",$part);
9443: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9444:
9445: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9446:
9447: $return.= ($cunique%$cuname+
9448: $cunique%$cudom+
9449: $cusymb%$cuname+
9450: $cusymb%$cudom+
9451: $cucourseid%$cuname+
9452: $cucourseid%$cudom+
9453: $cpart%$cuname+
9454: $cpart%$cudom);
9455: } else {
9456: $return.= ($cunique%$cuname+
9457: $cunique%$cudom+
9458: $cusymb%$cuname+
9459: $cusymb%$cudom+
9460: $cucourseid%$cuname+
9461: $cucourseid%$cudom);
9462: }
9463: return $return;
9464: }
9465:
9466: sub receipt {
9467: my ($part)=@_;
9468: my ($symb,$courseid,$domain,$name) = &whichuser();
9469: return &ireceipt($name,$domain,$courseid,$symb,$part);
9470: }
9471:
9472: sub whichuser {
9473: my ($passedsymb)=@_;
9474: my ($symb,$courseid,$domain,$name,$publicuser);
9475: if (defined($env{'form.grade_symb'})) {
9476: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9477: my $allowed=&allowed('vgr',$tmp_courseid);
9478: if (!$allowed &&
9479: exists($env{'request.course.sec'}) &&
9480: $env{'request.course.sec'} !~ /^\s*$/) {
9481: $allowed=&allowed('vgr',$tmp_courseid.
9482: '/'.$env{'request.course.sec'});
9483: }
9484: if ($allowed) {
9485: ($symb)=&get_env_multiple('form.grade_symb');
9486: $courseid=$tmp_courseid;
9487: ($domain)=&get_env_multiple('form.grade_domain');
9488: ($name)=&get_env_multiple('form.grade_username');
9489: return ($symb,$courseid,$domain,$name,$publicuser);
9490: }
9491: }
9492: if (!$passedsymb) {
9493: $symb=&symbread();
9494: } else {
9495: $symb=$passedsymb;
9496: }
9497: $courseid=$env{'request.course.id'};
9498: $domain=$env{'user.domain'};
9499: $name=$env{'user.name'};
9500: if ($name eq 'public' && $domain eq 'public') {
9501: if (!defined($env{'form.username'})) {
9502: $env{'form.username'}.=time.rand(10000000);
9503: }
9504: $name.=$env{'form.username'};
9505: }
9506: return ($symb,$courseid,$domain,$name,$publicuser);
9507:
9508: }
9509:
9510: # ------------------------------------------------------------ Serves up a file
9511: # returns either the contents of the file or
9512: # -1 if the file doesn't exist
9513: #
9514: # if the target is a file that was uploaded via DOCS,
9515: # a check will be made to see if a current copy exists on the local server,
9516: # if it does this will be served, otherwise a copy will be retrieved from
9517: # the home server for the course and stored in /home/httpd/html/userfiles on
9518: # the local server.
9519:
9520: sub getfile {
9521: my ($file) = @_;
9522: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9523: &repcopy($file);
9524: return &readfile($file);
9525: }
9526:
9527: sub repcopy_userfile {
9528: my ($file)=@_;
9529: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9530: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9531: my ($cdom,$cnum,$filename) =
9532: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9533: my $uri="/uploaded/$cdom/$cnum/$filename";
9534: if (-e "$file") {
9535: # we already have a local copy, check it out
9536: my @fileinfo = stat($file);
9537: my $rtncode;
9538: my $info;
9539: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9540: if ($lwpresp ne 'ok') {
9541: # there is no such file anymore, even though we had a local copy
9542: if ($rtncode eq '404') {
9543: unlink($file);
9544: }
9545: return -1;
9546: }
9547: if ($info < $fileinfo[9]) {
9548: # nice, the file we have is up-to-date, just say okay
9549: return 'ok';
9550: } else {
9551: # the file is outdated, get rid of it
9552: unlink($file);
9553: }
9554: }
9555: # one way or the other, at this point, we don't have the file
9556: # construct the correct path for the file
9557: my @parts = ($cdom,$cnum);
9558: if ($filename =~ m|^(.+)/[^/]+$|) {
9559: push @parts, split(/\//,$1);
9560: }
9561: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9562: foreach my $part (@parts) {
9563: $path .= '/'.$part;
9564: if (!-e $path) {
9565: mkdir($path,0770);
9566: }
9567: }
9568: # now the path exists for sure
9569: # get a user agent
9570: my $ua=new LWP::UserAgent;
9571: my $transferfile=$file.'.in.transfer';
9572: # FIXME: this should flock
9573: if (-e $transferfile) { return 'ok'; }
9574: my $request;
9575: $uri=~s/^\///;
9576: my $homeserver = &homeserver($cnum,$cdom);
9577: my $protocol = $protocol{$homeserver};
9578: $protocol = 'http' if ($protocol ne 'https');
9579: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9580: my $response=$ua->request($request,$transferfile);
9581: # did it work?
9582: if ($response->is_error()) {
9583: unlink($transferfile);
9584: &logthis("Userfile repcopy failed for $uri");
9585: return -1;
9586: }
9587: # worked, rename the transfer file
9588: rename($transferfile,$file);
9589: return 'ok';
9590: }
9591:
9592: sub tokenwrapper {
9593: my $uri=shift;
9594: $uri=~s|^https?\://([^/]+)||;
9595: $uri=~s|^/||;
9596: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9597: my $token=$1;
9598: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9599: if ($udom && $uname && $file) {
9600: $file=~s|(\?\.*)*$||;
9601: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9602: my $homeserver = &homeserver($uname,$udom);
9603: my $protocol = $protocol{$homeserver};
9604: $protocol = 'http' if ($protocol ne 'https');
9605: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9606: (($uri=~/\?/)?'&':'?').'token='.$token.
9607: '&tokenissued='.$perlvar{'lonHostID'};
9608: } else {
9609: return '/adm/notfound.html';
9610: }
9611: }
9612:
9613: # call with reqtype HEAD: get last modification time
9614: # call with reqtype GET: get the file contents
9615: # Do not call this with reqtype GET for large files! It loads everything into memory
9616: #
9617: sub getuploaded {
9618: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9619: $uri=~s/^\///;
9620: my $homeserver = &homeserver($cnum,$cdom);
9621: my $protocol = $protocol{$homeserver};
9622: $protocol = 'http' if ($protocol ne 'https');
9623: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9624: my $ua=new LWP::UserAgent;
9625: my $request=new HTTP::Request($reqtype,$uri);
9626: my $response=$ua->request($request);
9627: $$rtncode = $response->code;
9628: if (! $response->is_success()) {
9629: return 'failed';
9630: }
9631: if ($reqtype eq 'HEAD') {
9632: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9633: } elsif ($reqtype eq 'GET') {
9634: $$info = $response->content;
9635: }
9636: return 'ok';
9637: }
9638:
9639: sub readfile {
9640: my $file = shift;
9641: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9642: my $fh;
9643: open($fh,"<$file");
9644: my $a='';
9645: while (my $line = <$fh>) { $a .= $line; }
9646: return $a;
9647: }
9648:
9649: sub filelocation {
9650: my ($dir,$file) = @_;
9651: my $location;
9652: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9653:
9654: if ($file =~ m-^/adm/-) {
9655: $file=~s-^/adm/wrapper/-/-;
9656: $file=~s-^/adm/coursedocs/showdoc/-/-;
9657: }
9658:
9659: if ($file=~m:^/~:) { # is a contruction space reference
9660: $location = $file;
9661: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9662: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9663: # is a correct contruction space reference
9664: $location = $file;
9665: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9666: $location = $file;
9667: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9668: my ($udom,$uname,$filename)=
9669: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9670: my $home=&homeserver($uname,$udom);
9671: my $is_me=0;
9672: my @ids=¤t_machine_ids();
9673: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9674: if ($is_me) {
9675: $location=&propath($udom,$uname).'/userfiles/'.$filename;
9676: } else {
9677: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9678: $udom.'/'.$uname.'/'.$filename;
9679: }
9680: } elsif ($file =~ m-^/adm/-) {
9681: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9682: } else {
9683: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9684: $file=~s:^/res/:/:;
9685: if ( !( $file =~ m:^/:) ) {
9686: $location = $dir. '/'.$file;
9687: } else {
9688: $location = '/home/httpd/html/res'.$file;
9689: }
9690: }
9691: $location=~s://+:/:g; # remove duplicate /
9692: while ($location=~m{/\.\./}) {
9693: if ($location =~ m{/[^/]+/\.\./}) {
9694: $location=~ s{/[^/]+/\.\./}{/}g;
9695: } else {
9696: $location=~ s{/\.\./}{/}g;
9697: }
9698: } #remove dir/..
9699: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9700: return $location;
9701: }
9702:
9703: sub hreflocation {
9704: my ($dir,$file)=@_;
9705: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9706: $file=filelocation($dir,$file);
9707: } elsif ($file=~m-^/adm/-) {
9708: $file=~s-^/adm/wrapper/-/-;
9709: $file=~s-^/adm/coursedocs/showdoc/-/-;
9710: }
9711: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9712: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9713: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9714: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9715: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9716: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9717: -/uploaded/$1/$2/-x;
9718: }
9719: if ($file=~ m{^/userfiles/}) {
9720: $file =~ s{^/userfiles/}{/uploaded/};
9721: }
9722: return $file;
9723: }
9724:
9725: sub current_machine_domains {
9726: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9727: }
9728:
9729: sub machine_domains {
9730: my ($hostname) = @_;
9731: my @domains;
9732: my %hostname = &all_hostnames();
9733: while( my($id, $name) = each(%hostname)) {
9734: # &logthis("-$id-$name-$hostname-");
9735: if ($hostname eq $name) {
9736: push(@domains,&host_domain($id));
9737: }
9738: }
9739: return @domains;
9740: }
9741:
9742: sub current_machine_ids {
9743: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9744: }
9745:
9746: sub machine_ids {
9747: my ($hostname) = @_;
9748: $hostname ||= &hostname($perlvar{'lonHostID'});
9749: my @ids;
9750: my %name_to_host = &all_names();
9751: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9752: return @{ $name_to_host{$hostname} };
9753: }
9754: return;
9755: }
9756:
9757: sub additional_machine_domains {
9758: my @domains;
9759: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9760: while( my $line = <$fh>) {
9761: $line =~ s/\s//g;
9762: push(@domains,$line);
9763: }
9764: return @domains;
9765: }
9766:
9767: sub default_login_domain {
9768: my $domain = $perlvar{'lonDefDomain'};
9769: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9770: foreach my $posdom (¤t_machine_domains(),
9771: &additional_machine_domains()) {
9772: if (lc($posdom) eq lc($testdomain)) {
9773: $domain=$posdom;
9774: last;
9775: }
9776: }
9777: return $domain;
9778: }
9779:
9780: # ------------------------------------------------------------- Declutters URLs
9781:
9782: sub declutter {
9783: my $thisfn=shift;
9784: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9785: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9786: $thisfn=~s/^\///;
9787: $thisfn=~s|^adm/wrapper/||;
9788: $thisfn=~s|^adm/coursedocs/showdoc/||;
9789: $thisfn=~s/^res\///;
9790: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9791: $thisfn=~s/\?.+$//;
9792: }
9793: return $thisfn;
9794: }
9795:
9796: # ------------------------------------------------------------- Clutter up URLs
9797:
9798: sub clutter {
9799: my $thisfn='/'.&declutter(shift);
9800: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9801: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9802: $thisfn='/res'.$thisfn;
9803: }
9804: if ($thisfn !~m|^/adm|) {
9805: if ($thisfn =~ m|^/ext/|) {
9806: $thisfn='/adm/wrapper'.$thisfn;
9807: } else {
9808: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9809: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9810: if ($embstyle eq 'ssi'
9811: || ($embstyle eq 'hdn')
9812: || ($embstyle eq 'rat')
9813: || ($embstyle eq 'prv')
9814: || ($embstyle eq 'ign')) {
9815: #do nothing with these
9816: } elsif (($embstyle eq 'img')
9817: || ($embstyle eq 'emb')
9818: || ($embstyle eq 'wrp')) {
9819: $thisfn='/adm/wrapper'.$thisfn;
9820: } elsif ($embstyle eq 'unk'
9821: && $thisfn!~/\.(sequence|page)$/) {
9822: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9823: } else {
9824: # &logthis("Got a blank emb style");
9825: }
9826: }
9827: }
9828: return $thisfn;
9829: }
9830:
9831: sub clutter_with_no_wrapper {
9832: my $uri = &clutter(shift);
9833: if ($uri =~ m-^/adm/-) {
9834: $uri =~ s-^/adm/wrapper/-/-;
9835: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9836: }
9837: return $uri;
9838: }
9839:
9840: sub freeze_escape {
9841: my ($value)=@_;
9842: if (ref($value)) {
9843: $value=&nfreeze($value);
9844: return '__FROZEN__'.&escape($value);
9845: }
9846: return &escape($value);
9847: }
9848:
9849:
9850: sub thaw_unescape {
9851: my ($value)=@_;
9852: if ($value =~ /^__FROZEN__/) {
9853: substr($value,0,10,undef);
9854: $value=&unescape($value);
9855: return &thaw($value);
9856: }
9857: return &unescape($value);
9858: }
9859:
9860: sub correct_line_ends {
9861: my ($result)=@_;
9862: $$result =~s/\r\n/\n/mg;
9863: $$result =~s/\r/\n/mg;
9864: }
9865: # ================================================================ Main Program
9866:
9867: sub goodbye {
9868: &logthis("Starting Shut down");
9869: #not converted to using infrastruture and probably shouldn't be
9870: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9871: #converted
9872: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9873: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9874: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9875: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9876: #1.1 only
9877: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9878: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9879: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9880: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9881: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9882: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9883: &logthis(sprintf("%-20s is %s",'hits',$hits));
9884: &flushcourselogs();
9885: &logthis("Shutting down");
9886: }
9887:
9888: sub get_dns {
9889: my ($url,$func,$ignore_cache) = @_;
9890: if (!$ignore_cache) {
9891: my ($content,$cached)=
9892: &Apache::lonnet::is_cached_new('dns',$url);
9893: if ($cached) {
9894: &$func($content);
9895: return;
9896: }
9897: }
9898:
9899: my %alldns;
9900: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
9901: foreach my $dns (<$config>) {
9902: next if ($dns !~ /^\^(\S*)/x);
9903: my $line = $1;
9904: my ($host,$protocol) = split(/:/,$line);
9905: if ($protocol ne 'https') {
9906: $protocol = 'http';
9907: }
9908: $alldns{$host} = $protocol;
9909: }
9910: while (%alldns) {
9911: my ($dns) = keys(%alldns);
9912: my $ua=new LWP::UserAgent;
9913: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
9914: my $response=$ua->request($request);
9915: delete($alldns{$dns});
9916: next if ($response->is_error());
9917: my @content = split("\n",$response->content);
9918: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
9919: &$func(\@content);
9920: return;
9921: }
9922: close($config);
9923: my $which = (split('/',$url))[3];
9924: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
9925: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
9926: my @content = <$config>;
9927: &$func(\@content);
9928: return;
9929: }
9930: # ------------------------------------------------------------ Read domain file
9931: {
9932: my $loaded;
9933: my %domain;
9934:
9935: sub parse_domain_tab {
9936: my ($lines) = @_;
9937: foreach my $line (@$lines) {
9938: next if ($line =~ /^(\#|\s*$ )/x);
9939:
9940: chomp($line);
9941: my ($name,@elements) = split(/:/,$line,9);
9942: my %this_domain;
9943: foreach my $field ('description', 'auth_def', 'auth_arg_def',
9944: 'lang_def', 'city', 'longi', 'lati',
9945: 'primary') {
9946: $this_domain{$field} = shift(@elements);
9947: }
9948: $domain{$name} = \%this_domain;
9949: }
9950: }
9951:
9952: sub reset_domain_info {
9953: undef($loaded);
9954: undef(%domain);
9955: }
9956:
9957: sub load_domain_tab {
9958: my ($ignore_cache) = @_;
9959: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
9960: my $fh;
9961: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
9962: my @lines = <$fh>;
9963: &parse_domain_tab(\@lines);
9964: }
9965: close($fh);
9966: $loaded = 1;
9967: }
9968:
9969: sub domain {
9970: &load_domain_tab() if (!$loaded);
9971:
9972: my ($name,$what) = @_;
9973: return if ( !exists($domain{$name}) );
9974:
9975: if (!$what) {
9976: return $domain{$name}{'description'};
9977: }
9978: return $domain{$name}{$what};
9979: }
9980:
9981: sub domain_info {
9982: &load_domain_tab() if (!$loaded);
9983: return %domain;
9984: }
9985:
9986: }
9987:
9988:
9989: # ------------------------------------------------------------- Read hosts file
9990: {
9991: my %hostname;
9992: my %hostdom;
9993: my %libserv;
9994: my $loaded;
9995: my %name_to_host;
9996: my %internetdom;
9997:
9998: sub parse_hosts_tab {
9999: my ($file) = @_;
10000: foreach my $configline (@$file) {
10001: next if ($configline =~ /^(\#|\s*$ )/x);
10002: next if ($configline =~ /^\^/);
10003: chomp($configline);
10004: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10005: $name=~s/\s//g;
10006: if ($id && $domain && $role && $name) {
10007: $hostname{$id}=$name;
10008: push(@{$name_to_host{$name}}, $id);
10009: $hostdom{$id}=$domain;
10010: if ($role eq 'library') { $libserv{$id}=$name; }
10011: if (defined($protocol)) {
10012: if ($protocol eq 'https') {
10013: $protocol{$id} = $protocol;
10014: } else {
10015: $protocol{$id} = 'http';
10016: }
10017: } else {
10018: $protocol{$id} = 'http';
10019: }
10020: if (defined($intdom)) {
10021: $internetdom{$id} = $intdom;
10022: }
10023: }
10024: }
10025: }
10026:
10027: sub reset_hosts_info {
10028: &purge_remembered();
10029: &reset_domain_info();
10030: &reset_hosts_ip_info();
10031: undef(%name_to_host);
10032: undef(%hostname);
10033: undef(%hostdom);
10034: undef(%libserv);
10035: undef($loaded);
10036: }
10037:
10038: sub load_hosts_tab {
10039: my ($ignore_cache) = @_;
10040: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
10041: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10042: my @config = <$config>;
10043: &parse_hosts_tab(\@config);
10044: close($config);
10045: $loaded=1;
10046: }
10047:
10048: sub hostname {
10049: &load_hosts_tab() if (!$loaded);
10050:
10051: my ($lonid) = @_;
10052: return $hostname{$lonid};
10053: }
10054:
10055: sub all_hostnames {
10056: &load_hosts_tab() if (!$loaded);
10057:
10058: return %hostname;
10059: }
10060:
10061: sub all_names {
10062: &load_hosts_tab() if (!$loaded);
10063:
10064: return %name_to_host;
10065: }
10066:
10067: sub all_host_domain {
10068: &load_hosts_tab() if (!$loaded);
10069: return %hostdom;
10070: }
10071:
10072: sub is_library {
10073: &load_hosts_tab() if (!$loaded);
10074:
10075: return exists($libserv{$_[0]});
10076: }
10077:
10078: sub all_library {
10079: &load_hosts_tab() if (!$loaded);
10080:
10081: return %libserv;
10082: }
10083:
10084: sub unique_library {
10085: #2x reverse removes all hostnames that appear more than once
10086: my %unique = reverse &all_library();
10087: return reverse %unique;
10088: }
10089:
10090: sub get_servers {
10091: &load_hosts_tab() if (!$loaded);
10092:
10093: my ($domain,$type) = @_;
10094: my %possible_hosts = ($type eq 'library') ? %libserv
10095: : %hostname;
10096: my %result;
10097: if (ref($domain) eq 'ARRAY') {
10098: while ( my ($host,$hostname) = each(%possible_hosts)) {
10099: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10100: $result{$host} = $hostname;
10101: }
10102: }
10103: } else {
10104: while ( my ($host,$hostname) = each(%possible_hosts)) {
10105: if ($hostdom{$host} eq $domain) {
10106: $result{$host} = $hostname;
10107: }
10108: }
10109: }
10110: return %result;
10111: }
10112:
10113: sub get_unique_servers {
10114: my %unique = reverse &get_servers(@_);
10115: return reverse %unique;
10116: }
10117:
10118: sub host_domain {
10119: &load_hosts_tab() if (!$loaded);
10120:
10121: my ($lonid) = @_;
10122: return $hostdom{$lonid};
10123: }
10124:
10125: sub all_domains {
10126: &load_hosts_tab() if (!$loaded);
10127:
10128: my %seen;
10129: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10130: return @uniq;
10131: }
10132:
10133: sub internet_dom {
10134: &load_hosts_tab() if (!$loaded);
10135:
10136: my ($lonid) = @_;
10137: return $internetdom{$lonid};
10138: }
10139: }
10140:
10141: {
10142: my %iphost;
10143: my %name_to_ip;
10144: my %lonid_to_ip;
10145:
10146: sub get_hosts_from_ip {
10147: my ($ip) = @_;
10148: my %iphosts = &get_iphost();
10149: if (ref($iphosts{$ip})) {
10150: return @{$iphosts{$ip}};
10151: }
10152: return;
10153: }
10154:
10155: sub reset_hosts_ip_info {
10156: undef(%iphost);
10157: undef(%name_to_ip);
10158: undef(%lonid_to_ip);
10159: }
10160:
10161: sub get_host_ip {
10162: my ($lonid) = @_;
10163: if (exists($lonid_to_ip{$lonid})) {
10164: return $lonid_to_ip{$lonid};
10165: }
10166: my $name=&hostname($lonid);
10167: my $ip = gethostbyname($name);
10168: return if (!$ip || length($ip) ne 4);
10169: $ip=inet_ntoa($ip);
10170: $name_to_ip{$name} = $ip;
10171: $lonid_to_ip{$lonid} = $ip;
10172: return $ip;
10173: }
10174:
10175: sub get_iphost {
10176: my ($ignore_cache) = @_;
10177:
10178: if (!$ignore_cache) {
10179: if (%iphost) {
10180: return %iphost;
10181: }
10182: my ($ip_info,$cached)=
10183: &Apache::lonnet::is_cached_new('iphost','iphost');
10184: if ($cached) {
10185: %iphost = %{$ip_info->[0]};
10186: %name_to_ip = %{$ip_info->[1]};
10187: %lonid_to_ip = %{$ip_info->[2]};
10188: return %iphost;
10189: }
10190: }
10191:
10192: # get yesterday's info for fallback
10193: my %old_name_to_ip;
10194: my ($ip_info,$cached)=
10195: &Apache::lonnet::is_cached_new('iphost','iphost');
10196: if ($cached) {
10197: %old_name_to_ip = %{$ip_info->[1]};
10198: }
10199:
10200: my %name_to_host = &all_names();
10201: foreach my $name (keys(%name_to_host)) {
10202: my $ip;
10203: if (!exists($name_to_ip{$name})) {
10204: $ip = gethostbyname($name);
10205: if (!$ip || length($ip) ne 4) {
10206: if (defined($old_name_to_ip{$name})) {
10207: $ip = $old_name_to_ip{$name};
10208: &logthis("Can't find $name defaulting to old $ip");
10209: } else {
10210: &logthis("Name $name no IP found");
10211: next;
10212: }
10213: } else {
10214: $ip=inet_ntoa($ip);
10215: }
10216: $name_to_ip{$name} = $ip;
10217: } else {
10218: $ip = $name_to_ip{$name};
10219: }
10220: foreach my $id (@{ $name_to_host{$name} }) {
10221: $lonid_to_ip{$id} = $ip;
10222: }
10223: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10224: }
10225: &Apache::lonnet::do_cache_new('iphost','iphost',
10226: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10227: 48*60*60);
10228:
10229: return %iphost;
10230: }
10231:
10232: #
10233: # Given a DNS returns the loncapa host name for that DNS
10234: #
10235: sub host_from_dns {
10236: my ($dns) = @_;
10237: my @hosts;
10238: my $ip;
10239:
10240: if (exists($name_to_ip{$dns})) {
10241: $ip = $name_to_ip{$dns};
10242: }
10243: if (!$ip) {
10244: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10245: if (length($ip) == 4) {
10246: $ip = &IO::Socket::inet_ntoa($ip);
10247: }
10248: }
10249: if ($ip) {
10250: @hosts = get_hosts_from_ip($ip);
10251: return $hosts[0];
10252: }
10253: return undef;
10254: }
10255:
10256: sub get_internet_names {
10257: my ($lonid) = @_;
10258: return if ($lonid eq '');
10259: my ($idnref,$cached)=
10260: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10261: if ($cached) {
10262: return $idnref;
10263: }
10264: my $ip = &get_host_ip($lonid);
10265: my @hosts = &get_hosts_from_ip($ip);
10266: my %iphost = &get_iphost();
10267: my (@idns,%seen);
10268: foreach my $id (@hosts) {
10269: my $dom = &host_domain($id);
10270: my $prim_id = &domain($dom,'primary');
10271: my $prim_ip = &get_host_ip($prim_id);
10272: next if ($seen{$prim_ip});
10273: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10274: foreach my $id (@{$iphost{$prim_ip}}) {
10275: my $intdom = &internet_dom($id);
10276: unless (grep(/^\Q$intdom\E$/,@idns)) {
10277: push(@idns,$intdom);
10278: }
10279: }
10280: }
10281: $seen{$prim_ip} = 1;
10282: }
10283: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10284: }
10285:
10286: }
10287:
10288: sub all_loncaparevs {
10289: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10290: }
10291:
10292: BEGIN {
10293:
10294: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10295: unless ($readit) {
10296: {
10297: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10298: %perlvar = (%perlvar,%{$configvars});
10299: }
10300:
10301:
10302: # ------------------------------------------------------ Read spare server file
10303: {
10304: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10305:
10306: while (my $configline=<$config>) {
10307: chomp($configline);
10308: if ($configline) {
10309: my ($host,$type) = split(':',$configline,2);
10310: if (!defined($type) || $type eq '') { $type = 'default' };
10311: push(@{ $spareid{$type} }, $host);
10312: }
10313: }
10314: close($config);
10315: }
10316: # ------------------------------------------------------------ Read permissions
10317: {
10318: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10319:
10320: while (my $configline=<$config>) {
10321: chomp($configline);
10322: if ($configline) {
10323: my ($role,$perm)=split(/ /,$configline);
10324: if ($perm ne '') { $pr{$role}=$perm; }
10325: }
10326: }
10327: close($config);
10328: }
10329:
10330: # -------------------------------------------- Read plain texts for permissions
10331: {
10332: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10333:
10334: while (my $configline=<$config>) {
10335: chomp($configline);
10336: if ($configline) {
10337: my ($short,@plain)=split(/:/,$configline);
10338: %{$prp{$short}} = ();
10339: if (@plain > 0) {
10340: $prp{$short}{'std'} = $plain[0];
10341: for (my $i=1; $i<@plain; $i++) {
10342: $prp{$short}{'alt'.$i} = $plain[$i];
10343: }
10344: }
10345: }
10346: }
10347: close($config);
10348: }
10349:
10350: # ---------------------------------------------------------- Read package table
10351: {
10352: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10353:
10354: while (my $configline=<$config>) {
10355: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10356: chomp($configline);
10357: my ($short,$plain)=split(/:/,$configline);
10358: my ($pack,$name)=split(/\&/,$short);
10359: if ($plain ne '') {
10360: $packagetab{$pack.'&'.$name.'&name'}=$name;
10361: $packagetab{$short}=$plain;
10362: }
10363: }
10364: close($config);
10365: }
10366:
10367: # ---------------------------------------------------------- Read loncaparev table
10368: {
10369: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10370: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10371: while (my $configline=<$config>) {
10372: chomp($configline);
10373: my ($hostid,$loncaparev)=split(/:/,$configline);
10374: $loncaparevs{$hostid}=$loncaparev;
10375: }
10376: close($config);
10377: }
10378: }
10379: }
10380:
10381: # ---------------------------------------------------------- Read serverhostID table
10382: {
10383: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10384: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10385: while (my $configline=<$config>) {
10386: chomp($configline);
10387: my ($name,$id)=split(/:/,$configline);
10388: $serverhomeIDs{$name}=$id;
10389: }
10390: close($config);
10391: }
10392: }
10393: }
10394:
10395: {
10396: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10397: if (-e $file) {
10398: my $parser = HTML::LCParser->new($file);
10399: while (my $token = $parser->get_token()) {
10400: if ($token->[0] eq 'S') {
10401: my $item = $token->[1];
10402: my $name = $token->[2]{'name'};
10403: my $value = $token->[2]{'value'};
10404: if ($item ne '' && $name ne '' && $value ne '') {
10405: my $release = $parser->get_text();
10406: $release =~ s/(^\s*|\s*$ )//gx;
10407: $needsrelease{$item.':'.$name.':'.$value} = $release;
10408: }
10409: }
10410: }
10411: }
10412: }
10413:
10414: # ------------- set up temporary directory
10415: {
10416: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
10417:
10418: }
10419:
10420: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10421: 'compress_threshold'=> 20_000,
10422: });
10423:
10424: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10425: $dumpcount=0;
10426: $locknum=0;
10427:
10428: &logtouch();
10429: &logthis('<font color="yellow">INFO: Read configuration</font>');
10430: $readit=1;
10431: {
10432: use integer;
10433: my $test=(2**32)+1;
10434: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10435: &logthis(" Detected 64bit platform ($_64bit)");
10436: }
10437: }
10438: }
10439:
10440: 1;
10441: __END__
10442:
10443: =pod
10444:
10445: =head1 NAME
10446:
10447: Apache::lonnet - Subroutines to ask questions about things in the network.
10448:
10449: =head1 SYNOPSIS
10450:
10451: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10452:
10453: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10454:
10455: Common parameters:
10456:
10457: =over 4
10458:
10459: =item *
10460:
10461: $uname : an internal username (if $cname expecting a course Id specifically)
10462:
10463: =item *
10464:
10465: $udom : a domain (if $cdom expecting a course's domain specifically)
10466:
10467: =item *
10468:
10469: $symb : a resource instance identifier
10470:
10471: =item *
10472:
10473: $namespace : the name of a .db file that contains the data needed or
10474: being set.
10475:
10476: =back
10477:
10478: =head1 OVERVIEW
10479:
10480: lonnet provides subroutines which interact with the
10481: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10482: about classes, users, and resources.
10483:
10484: For many of these objects you can also use this to store data about
10485: them or modify them in various ways.
10486:
10487: =head2 Symbs
10488:
10489: To identify a specific instance of a resource, LON-CAPA uses symbols
10490: or "symbs"X<symb>. These identifiers are built from the URL of the
10491: map, the resource number of the resource in the map, and the URL of
10492: the resource itself. The latter is somewhat redundant, but might help
10493: if maps change.
10494:
10495: An example is
10496:
10497: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10498:
10499: The respective map entry is
10500:
10501: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10502: title="Problem 2">
10503: </resource>
10504:
10505: Symbs are used by the random number generator, as well as to store and
10506: restore data specific to a certain instance of for example a problem.
10507:
10508: =head2 Storing And Retrieving Data
10509:
10510: X<store()>X<cstore()>X<restore()>Three of the most important functions
10511: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10512: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10513: is is the non-critical message twin of cstore. These functions are for
10514: handlers to store a perl hash to a user's permanent data space in an
10515: easy manner, and to retrieve it again on another call. It is expected
10516: that a handler would use this once at the beginning to retrieve data,
10517: and then again once at the end to send only the new data back.
10518:
10519: The data is stored in the user's data directory on the user's
10520: homeserver under the ID of the course.
10521:
10522: The hash that is returned by restore will have all of the previous
10523: value for all of the elements of the hash.
10524:
10525: Example:
10526:
10527: #creating a hash
10528: my %hash;
10529: $hash{'foo'}='bar';
10530:
10531: #storing it
10532: &Apache::lonnet::cstore(\%hash);
10533:
10534: #changing a value
10535: $hash{'foo'}='notbar';
10536:
10537: #adding a new value
10538: $hash{'bar'}='foo';
10539: &Apache::lonnet::cstore(\%hash);
10540:
10541: #retrieving the hash
10542: my %history=&Apache::lonnet::restore();
10543:
10544: #print the hash
10545: foreach my $key (sort(keys(%history))) {
10546: print("\%history{$key} = $history{$key}");
10547: }
10548:
10549: Will print out:
10550:
10551: %history{1:foo} = bar
10552: %history{1:keys} = foo:timestamp
10553: %history{1:timestamp} = 990455579
10554: %history{2:bar} = foo
10555: %history{2:foo} = notbar
10556: %history{2:keys} = foo:bar:timestamp
10557: %history{2:timestamp} = 990455580
10558: %history{bar} = foo
10559: %history{foo} = notbar
10560: %history{timestamp} = 990455580
10561: %history{version} = 2
10562:
10563: Note that the special hash entries C<keys>, C<version> and
10564: C<timestamp> were added to the hash. C<version> will be equal to the
10565: total number of versions of the data that have been stored. The
10566: C<timestamp> attribute will be the UNIX time the hash was
10567: stored. C<keys> is available in every historical section to list which
10568: keys were added or changed at a specific historical revision of a
10569: hash.
10570:
10571: B<Warning>: do not store the hash that restore returns directly. This
10572: will cause a mess since it will restore the historical keys as if the
10573: were new keys. I.E. 1:foo will become 1:1:foo etc.
10574:
10575: Calling convention:
10576:
10577: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10578: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10579:
10580: For more detailed information, see lonnet specific documentation.
10581:
10582: =head1 RETURN MESSAGES
10583:
10584: =over 4
10585:
10586: =item * B<con_lost>: unable to contact remote host
10587:
10588: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10589: when the connection is brought back up
10590:
10591: =item * B<con_failed>: unable to contact remote host and unable to save message
10592: for later delivery
10593:
10594: =item * B<error:>: an error a occurred, a description of the error follows the :
10595:
10596: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10597: that was requested
10598:
10599: =back
10600:
10601: =head1 PUBLIC SUBROUTINES
10602:
10603: =head2 Session Environment Functions
10604:
10605: =over 4
10606:
10607: =item *
10608: X<appenv()>
10609: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10610: the user envirnoment file, and will be restored for each access this
10611: user makes during this session, also modifies the %env for the current
10612: process. Optional rolesarrayref - if defined contains a reference to an array
10613: of roles which are exempt from the restriction on modifying user.role entries
10614: in the user's environment.db and in %env.
10615:
10616: =item *
10617: X<delenv()>
10618: B<delenv($delthis,$regexp)>: removes all items from the session
10619: environment file that begin with $delthis. If the
10620: optional second arg - $regexp - is true, $delthis is treated as a
10621: regular expression, otherwise \Q$delthis\E is used.
10622: The values are also deleted from the current processes %env.
10623:
10624: =item * get_env_multiple($name)
10625:
10626: gets $name from the %env hash, it seemlessly handles the cases where multiple
10627: values may be defined and end up as an array ref.
10628:
10629: returns an array of values
10630:
10631: =back
10632:
10633: =head2 User Information
10634:
10635: =over 4
10636:
10637: =item *
10638: X<queryauthenticate()>
10639: B<queryauthenticate($uname,$udom)>: try to determine user's current
10640: authentication scheme
10641:
10642: =item *
10643: X<authenticate()>
10644: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10645: authenticate user from domain's lib servers (first use the current
10646: one). C<$upass> should be the users password.
10647: $checkdefauth is optional (value is 1 if a check should be made to
10648: authenticate user using default authentication method, and allow
10649: account creation if username does not have account in the domain).
10650: $clientcancheckhost is optional (value is 1 if checking whether the
10651: server can host will occur on the client side in lonauth.pm).
10652:
10653: =item *
10654: X<homeserver()>
10655: B<homeserver($uname,$udom)>: find the server which has
10656: the user's directory and files (there must be only one), this caches
10657: the answer, and also caches if there is a borken connection.
10658:
10659: =item *
10660: X<idget()>
10661: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10662: (IDs are a unique resource in a domain, there must be only 1 ID per
10663: username, and only 1 username per ID in a specific domain) (returns
10664: hash: id=>name,id=>name)
10665:
10666: =item *
10667: X<idrget()>
10668: B<idrget($udom,@unames)>: find the IDs behind a list of
10669: usernames (returns hash: name=>id,name=>id)
10670:
10671: =item *
10672: X<idput()>
10673: B<idput($udom,%ids)>: store away a list of names and associated IDs
10674:
10675: =item *
10676: X<rolesinit()>
10677: B<rolesinit($udom,$username,$authhost)>: get user privileges
10678:
10679: =item *
10680: X<getsection()>
10681: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10682: course $cname, return section name/number or '' for "not in course"
10683: and '-1' for "no section"
10684:
10685: =item *
10686: X<userenvironment()>
10687: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10688: passed in @what from the requested user's environment, returns a hash
10689:
10690: =item *
10691: X<userlog_query()>
10692: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10693: activity.log file. %filters defines filters applied when parsing the
10694: log file. These can be start or end timestamps, or the type of action
10695: - log to look for Login or Logout events, check for Checkin or
10696: Checkout, role for role selection. The response is in the form
10697: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10698: escaped strings of the action recorded in the activity.log file.
10699:
10700: =back
10701:
10702: =head2 User Roles
10703:
10704: =over 4
10705:
10706: =item *
10707:
10708: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10709: F: full access
10710: U,I,K: authentication modes (cxx only)
10711: '': forbidden
10712: 1: user needs to choose course
10713: 2: browse allowed
10714: A: passphrase authentication needed
10715:
10716: =item *
10717:
10718: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10719: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10720: and course level
10721:
10722: =item *
10723:
10724: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10725: (rolesplain.tab); plain text explanation of a user role term.
10726: $type is Course (default) or Community.
10727: If $forcedefault evaluates to true, text returned will be default
10728: text for $type. Otherwise, if this is a course, the text returned
10729: will be a custom name for the role (if defined in the course's
10730: environment). If no custom name is defined the default is returned.
10731:
10732: =item *
10733:
10734: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10735: All arguments are optional. Returns a hash of a roles, either for
10736: co-author/assistant author roles for a user's Construction Space
10737: (default), or if $context is 'userroles', roles for the user himself,
10738: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10739: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10740: For each key, value is set to colon-separated start and end times for
10741: the role. If no username and domain are specified, will default to
10742: current user/domain. Types, roles, and roledoms are references to arrays
10743: of role statuses (active, future or previous), roles
10744: (e.g., cc,in, st etc.) and domains of the roles which can be used
10745: to restrict the list of roles reported. If no array ref is
10746: provided for types, will default to return only active roles.
10747:
10748: =back
10749:
10750: =head2 User Modification
10751:
10752: =over 4
10753:
10754: =item *
10755:
10756: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10757: user for the level given by URL. Optional start and end dates (leave empty
10758: string or zero for "no date")
10759:
10760: =item *
10761:
10762: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10763: change a users, password, possible return values are: ok,
10764: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10765: refused
10766:
10767: =item *
10768:
10769: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10770:
10771: =item *
10772:
10773: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
10774: $forceid,$desiredhome,$email,$inststatus,$candelete) :
10775:
10776: will update user information (firstname,middlename,lastname,generation,
10777: permanentemail), and if forceid is true, student/employee ID also.
10778: A user's institutional affiliation(s) can also be updated.
10779: User information fields will not be overwritten with empty entries
10780: unless the field is included in the $candelete array reference.
10781: This array is included when a single user is modified via "Manage Users",
10782: or when Autoupdate.pl is run by cron in a domain.
10783:
10784: =item *
10785:
10786: modifystudent
10787:
10788: modify a student's enrollment and identification information.
10789: The course id is resolved based on the current users environment.
10790: This means the envoking user must be a course coordinator or otherwise
10791: associated with a course.
10792:
10793: This call is essentially a wrapper for lonnet::modifyuser and
10794: lonnet::modify_student_enrollment
10795:
10796: Inputs:
10797:
10798: =over 4
10799:
10800: =item B<$udom> Student's loncapa domain
10801:
10802: =item B<$uname> Student's loncapa login name
10803:
10804: =item B<$uid> Student/Employee ID
10805:
10806: =item B<$umode> Student's authentication mode
10807:
10808: =item B<$upass> Student's password
10809:
10810: =item B<$first> Student's first name
10811:
10812: =item B<$middle> Student's middle name
10813:
10814: =item B<$last> Student's last name
10815:
10816: =item B<$gene> Student's generation
10817:
10818: =item B<$usec> Student's section in course
10819:
10820: =item B<$end> Unix time of the roles expiration
10821:
10822: =item B<$start> Unix time of the roles start date
10823:
10824: =item B<$forceid> If defined, allow $uid to be changed
10825:
10826: =item B<$desiredhome> server to use as home server for student
10827:
10828: =item B<$email> Student's permanent e-mail address
10829:
10830: =item B<$type> Type of enrollment (auto or manual)
10831:
10832: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10833:
10834: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10835:
10836: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10837:
10838: =item B<$context> role change context (shown in User Management Logs display in a course)
10839:
10840: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10841:
10842: =back
10843:
10844: =item *
10845:
10846: modify_student_enrollment
10847:
10848: Change a students enrollment status in a class. The environment variable
10849: 'role.request.course' must be defined for this function to proceed.
10850:
10851: Inputs:
10852:
10853: =over 4
10854:
10855: =item $udom, students domain
10856:
10857: =item $uname, students name
10858:
10859: =item $uid, students user id
10860:
10861: =item $first, students first name
10862:
10863: =item $middle
10864:
10865: =item $last
10866:
10867: =item $gene
10868:
10869: =item $usec
10870:
10871: =item $end
10872:
10873: =item $start
10874:
10875: =item $type
10876:
10877: =item $locktype
10878:
10879: =item $cid
10880:
10881: =item $selfenroll
10882:
10883: =item $context
10884:
10885: =back
10886:
10887:
10888: =item *
10889:
10890: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
10891: custom role; give a custom role to a user for the level given by URL. Specify
10892: name and domain of role author, and role name
10893:
10894: =item *
10895:
10896: revokerole($udom,$uname,$url,$role) : revoke a role for url
10897:
10898: =item *
10899:
10900: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
10901:
10902: =back
10903:
10904: =head2 Course Infomation
10905:
10906: =over 4
10907:
10908: =item *
10909:
10910: coursedescription($courseid) : returns a hash of information about the
10911: specified course id, including all environment settings for the
10912: course, the description of the course will be in the hash under the
10913: key 'description'
10914:
10915: =item *
10916:
10917: resdata($name,$domain,$type,@which) : request for current parameter
10918: setting for a specific $type, where $type is either 'course' or 'user',
10919: @what should be a list of parameters to ask about. This routine caches
10920: answers for 5 minutes.
10921:
10922: =item *
10923:
10924: get_courseresdata($courseid, $domain) : dump the entire course resource
10925: data base, returning a hash that is keyed by the resource name and has
10926: values that are the resource value. I believe that the timestamps and
10927: versions are also returned.
10928:
10929:
10930: =back
10931:
10932: =head2 Course Modification
10933:
10934: =over 4
10935:
10936: =item *
10937:
10938: writecoursepref($courseid,%prefs) : write preferences (environment
10939: database) for a course
10940:
10941: =item *
10942:
10943: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
10944:
10945: =item *
10946:
10947: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
10948:
10949: =back
10950:
10951: =head2 Resource Subroutines
10952:
10953: =over 4
10954:
10955: =item *
10956:
10957: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
10958:
10959: =item *
10960:
10961: repcopy($filename) : subscribes to the requested file, and attempts to
10962: replicate from the owning library server, Might return
10963: 'unavailable', 'not_found', 'forbidden', 'ok', or
10964: 'bad_request', also attempts to grab the metadata for the
10965: resource. Expects the local filesystem pathname
10966: (/home/httpd/html/res/....)
10967:
10968: =back
10969:
10970: =head2 Resource Information
10971:
10972: =over 4
10973:
10974: =item *
10975:
10976: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
10977: a vairety of different possible values, $varname should be a request
10978: string, and the other parameters can be used to specify who and what
10979: one is asking about.
10980:
10981: Possible values for $varname are environment.lastname (or other item
10982: from the envirnment hash), user.name (or someother aspect about the
10983: user), resource.0.maxtries (or some other part and parameter of a
10984: resource)
10985:
10986: =item *
10987:
10988: directcondval($number) : get current value of a condition; reads from a state
10989: string
10990:
10991: =item *
10992:
10993: condval($condidx) : value of condition index based on state
10994:
10995: =item *
10996:
10997: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
10998: resource's metadata, $what should be either a specific key, or either
10999: 'keys' (to get a list of possible keys) or 'packages' to get a list of
11000: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
11001:
11002: this function automatically caches all requests
11003:
11004: =item *
11005:
11006: metadata_query($query,$custom,$customshow) : make a metadata query against the
11007: network of library servers; returns file handle of where SQL and regex results
11008: will be stored for query
11009:
11010: =item *
11011:
11012: symbread($filename) : return symbolic list entry (filename argument optional);
11013: returns the data handle
11014:
11015: =item *
11016:
11017: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
11018: a possible symb for the URL in $thisfn, and if is an encryypted
11019: resource that the user accessed using /enc/ returns a 1 on success, 0
11020: on failure, user must be in a course, as it assumes the existance of
11021: the course initial hash, and uses $env('request.course.id'}
11022:
11023:
11024: =item *
11025:
11026: symbclean($symb) : removes versions numbers from a symb, returns the
11027: cleaned symb
11028:
11029: =item *
11030:
11031: is_on_map($uri) : checks if the $uri is somewhere on the current
11032: course map, user must be in a course for it to work.
11033:
11034: =item *
11035:
11036: numval($salt) : return random seed value (addend for rndseed)
11037:
11038: =item *
11039:
11040: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
11041: a random seed, all arguments are optional, if they aren't sent it uses the
11042: environment to derive them. Note: if symb isn't sent and it can't get one
11043: from &symbread it will use the current time as its return value
11044:
11045: =item *
11046:
11047: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
11048: unfakeable, receipt
11049:
11050: =item *
11051:
11052: receipt() : API to ireceipt working off of env values; given out to users
11053:
11054: =item *
11055:
11056: countacc($url) : count the number of accesses to a given URL
11057:
11058: =item *
11059:
11060: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
11061:
11062: =item *
11063:
11064: checkin($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 $tcrsid)
11065:
11066: =item *
11067:
11068: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
11069:
11070: =item *
11071:
11072: devalidate($symb) : devalidate temporary spreadsheet calculations,
11073: forcing spreadsheet to reevaluate the resource scores next time.
11074:
11075: =back
11076:
11077: =head2 Storing/Retreiving Data
11078:
11079: =over 4
11080:
11081: =item *
11082:
11083: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11084: for this url; hashref needs to be given and should be a \%hashname; the
11085: remaining args aren't required and if they aren't passed or are '' they will
11086: be derived from the env
11087:
11088: =item *
11089:
11090: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11091: uses critical subroutine
11092:
11093: =item *
11094:
11095: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11096: all args are optional
11097:
11098: =item *
11099:
11100: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11101: dumps the complete (or key matching regexp) namespace into a hash
11102: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11103: normally &store()ed into
11104:
11105: $range should be either an integer '100' (give me the first 100
11106: matching records)
11107: or be two integers sperated by a - with no spaces
11108: '30-50' (give me the 30th through the 50th matching
11109: records)
11110:
11111:
11112: =item *
11113:
11114: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11115: replaces a &store() version of data with a replacement set of data
11116: for a particular resource in a namespace passed in the $storehash hash
11117: reference
11118:
11119: =item *
11120:
11121: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11122: works very similar to store/cstore, but all data is stored in a
11123: temporary location and can be reset using tmpreset, $storehash should
11124: be a hash reference, returns nothing on success
11125:
11126: =item *
11127:
11128: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11129: similar to restore, but all data is stored in a temporary location and
11130: can be reset using tmpreset. Returns a hash of values on success,
11131: error string otherwise.
11132:
11133: =item *
11134:
11135: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11136: deltes all keys for $symb form the temporary storage hash.
11137:
11138: =item *
11139:
11140: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11141: reference filled in from namesp ($udom and $uname are optional)
11142:
11143: =item *
11144:
11145: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11146: namesp ($udom and $uname are optional)
11147:
11148: =item *
11149:
11150: dump($namespace,$udom,$uname,$regexp,$range) :
11151: dumps the complete (or key matching regexp) namespace into a hash
11152: ($udom, $uname, $regexp, $range are optional)
11153:
11154: $range should be either an integer '100' (give me the first 100
11155: matching records)
11156: or be two integers sperated by a - with no spaces
11157: '30-50' (give me the 30th through the 50th matching
11158: records)
11159: =item *
11160:
11161: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11162: $store can be a scalar, an array reference, or if the amount to be
11163: incremented is > 1, a hash reference.
11164:
11165: ($udom and $uname are optional)
11166:
11167: =item *
11168:
11169: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11170: ($udom and $uname are optional)
11171:
11172: =item *
11173:
11174: cput($namespace,$storehash,$udom,$uname) : critical put
11175: ($udom and $uname are optional)
11176:
11177: =item *
11178:
11179: newput($namespace,$storehash,$udom,$uname) :
11180:
11181: Attempts to store the items in the $storehash, but only if they don't
11182: currently exist, if this succeeds you can be certain that you have
11183: successfully created a new key value pair in the $namespace db.
11184:
11185:
11186: Args:
11187: $namespace: name of database to store values to
11188: $storehash: hashref to store to the db
11189: $udom: (optional) domain of user containing the db
11190: $uname: (optional) name of user caontaining the db
11191:
11192: Returns:
11193: 'ok' -> succeeded in storing all keys of $storehash
11194: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11195: least <key> already existed in the db (other
11196: requested keys may also already exist)
11197: 'error: <msg>' -> unable to tie the DB or other error occurred
11198: 'con_lost' -> unable to contact request server
11199: 'refused' -> action was not allowed by remote machine
11200:
11201:
11202: =item *
11203:
11204: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11205: reference filled in from namesp (encrypts the return communication)
11206: ($udom and $uname are optional)
11207:
11208: =item *
11209:
11210: log($udom,$name,$home,$message) : write to permanent log for user; use
11211: critical subroutine
11212:
11213: =item *
11214:
11215: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11216: array reference filled in from namespace found in domain level on either
11217: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11218:
11219: =item *
11220:
11221: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11222: domain level either on specified domain server ($uhome) or primary domain
11223: server ($udom and $uhome are optional)
11224:
11225: =item *
11226:
11227: get_domain_defaults($target_domain) : returns hash with defaults for
11228: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11229: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11230: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11231: Values are retrieved from cache (if current), or from domain's configuration.db
11232: (if available), or lastly from values in lonTabs/dns_domain,tab,
11233: or lonTabs/domain.tab.
11234:
11235: %domdefaults = &get_auth_defaults($target_domain);
11236:
11237: =back
11238:
11239: =head2 Network Status Functions
11240:
11241: =over 4
11242:
11243: =item *
11244:
11245: dirlist($uri) : return directory list based on URI
11246:
11247: =item *
11248:
11249: spareserver() : find server with least workload from spare.tab
11250:
11251:
11252: =item *
11253:
11254: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11255: if there is no corresponding loncapa host.
11256:
11257: =back
11258:
11259:
11260: =head2 Apache Request
11261:
11262: =over 4
11263:
11264: =item *
11265:
11266: ssi($url,%hash) : server side include, does a complete request cycle on url to
11267: localhost, posts hash
11268:
11269: =back
11270:
11271: =head2 Data to String to Data
11272:
11273: =over 4
11274:
11275: =item *
11276:
11277: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11278: and '&' separators, supports elements that are arrayrefs and hashrefs
11279:
11280: =item *
11281:
11282: hashref2str($hashref) : convert a hashref into a string complete with
11283: escaping and '=' and '&' separators, supports elements that are
11284: arrayrefs and hashrefs
11285:
11286: =item *
11287:
11288: arrayref2str($arrayref) : convert an arrayref into a string complete
11289: with escaping and '&' separators, supports elements that are arrayrefs
11290: and hashrefs
11291:
11292: =item *
11293:
11294: str2hash($string) : convert string to hash using unescaping and
11295: splitting on '=' and '&', supports elements that are arrayrefs and
11296: hashrefs
11297:
11298: =item *
11299:
11300: str2array($string) : convert string to hash using unescaping and
11301: splitting on '&', supports elements that are arrayrefs and hashrefs
11302:
11303: =back
11304:
11305: =head2 Logging Routines
11306:
11307: =over 4
11308:
11309: These routines allow one to make log messages in the lonnet.log and
11310: lonnet.perm logfiles.
11311:
11312: =item *
11313:
11314: logtouch() : make sure the logfile, lonnet.log, exists
11315:
11316: =item *
11317:
11318: logthis() : append message to the normal lonnet.log file, it gets
11319: preiodically rolled over and deleted.
11320:
11321: =item *
11322:
11323: logperm() : append a permanent message to lonnet.perm.log, this log
11324: file never gets deleted by any automated portion of the system, only
11325: messages of critical importance should go in here.
11326:
11327: =back
11328:
11329: =head2 General File Helper Routines
11330:
11331: =over 4
11332:
11333: =item *
11334:
11335: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11336: (a) files in /uploaded
11337: (i) If a local copy of the file exists -
11338: compares modification date of local copy with last-modified date for
11339: definitive version stored on home server for course. If local copy is
11340: stale, requests a new version from the home server and stores it.
11341: If the original has been removed from the home server, then local copy
11342: is unlinked.
11343: (ii) If local copy does not exist -
11344: requests the file from the home server and stores it.
11345:
11346: If $caller is 'uploadrep':
11347: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11348: for request for files originally uploaded via DOCS.
11349: - returns 'ok' if fresh local copy now available, -1 otherwise.
11350:
11351: Otherwise:
11352: This indicates a call from the content generation phase of the request.
11353: - returns the entire contents of the file or -1.
11354:
11355: (b) files in /res
11356: - returns the entire contents of a file or -1;
11357: it properly subscribes to and replicates the file if neccessary.
11358:
11359:
11360: =item *
11361:
11362: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11363: reference
11364:
11365: returns either a stat() list of data about the file or an empty list
11366: if the file doesn't exist or couldn't find out about it (connection
11367: problems or user unknown)
11368:
11369: =item *
11370:
11371: filelocation($dir,$file) : returns file system location of a file
11372: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11373: directory that relative $file lookups are to looked in ($dir of /a/dir
11374: and a file of ../bob will become /a/bob)
11375:
11376: =item *
11377:
11378: hreflocation($dir,$file) : returns file system location or a URL; same as
11379: filelocation except for hrefs
11380:
11381: =item *
11382:
11383: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11384:
11385: =back
11386:
11387: =head2 Usererfile file routines (/uploaded*)
11388:
11389: =over 4
11390:
11391: =item *
11392:
11393: userfileupload(): main rotine for putting a file in a user or course's
11394: filespace, arguments are,
11395:
11396: formname - required - this is the name of the element in $env where the
11397: filename, and the contents of the file to create/modifed exist
11398: the filename is in $env{'form.'.$formname.'.filename'} and the
11399: contents of the file is located in $env{'form.'.$formname}
11400: context - if coursedoc, store the file in the course of the active role
11401: of the current user;
11402: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
11403: if 'canceloverwrite': delete file in tmp/overwrites directory
11404: subdir - required - subdirectory to put the file in under ../userfiles/
11405: if undefined, it will be placed in "unknown"
11406:
11407: (This routine calls clean_filename() to remove any dangerous
11408: characters from the filename, and then calls finuserfileupload() to
11409: complete the transaction)
11410:
11411: returns either the url of the uploaded file (/uploaded/....) if successful
11412: and /adm/notfound.html if unsuccessful
11413:
11414: =item *
11415:
11416: clean_filename(): routine for cleaing a filename up for storage in
11417: userfile space, argument is:
11418:
11419: filename - proposed filename
11420:
11421: returns: the new clean filename
11422:
11423: =item *
11424:
11425: finishuserfileupload(): routine that creates and sends the file to
11426: userspace, probably shouldn't be called directly
11427:
11428: docuname: username or courseid of destination for the file
11429: docudom: domain of user/course of destination for the file
11430: formname: same as for userfileupload()
11431: fname: filename (including subdirectories) for the file
11432: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
11433: allfiles: reference to hash used to store objects found by parser
11434: codebase: reference to hash used for codebases of java objects found by parser
11435: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
11436: thumbheight: height (pixels) of thumbnail to be created for uploaded image
11437: resizewidth: width to be used to resize image using resizeImage from ImageMagick
11438: resizeheight: height to be used to resize image using resizeImage from ImageMagick
11439: context: if 'overwrite', will move the uploaded file from its temporary location to
11440: userfiles to facilitate overwriting a previously uploaded file with same name.
11441:
11442: returns either the url of the uploaded file (/uploaded/....) if successful
11443: and /adm/notfound.html if unsuccessful (or an error message if context
11444: was 'overwrite').
11445:
11446:
11447: =item *
11448:
11449: renameuserfile(): renames an existing userfile to a new name
11450:
11451: Args:
11452: docuname: username or courseid of destination for the file
11453: docudom: domain of user/course of destination for the file
11454: old: current file name (including any subdirs under userfiles)
11455: new: desired file name (including any subdirs under userfiles)
11456:
11457: =item *
11458:
11459: mkdiruserfile(): creates a directory is a userfiles dir
11460:
11461: Args:
11462: docuname: username or courseid of destination for the file
11463: docudom: domain of user/course of destination for the file
11464: dir: dir to create (including any subdirs under userfiles)
11465:
11466: =item *
11467:
11468: removeuserfile(): removes a file that exists in userfiles
11469:
11470: Args:
11471: docuname: username or courseid of destination for the file
11472: docudom: domain of user/course of destination for the file
11473: fname: filname to delete (including any subdirs under userfiles)
11474:
11475: =item *
11476:
11477: removeuploadedurl(): convience function for removeuserfile()
11478:
11479: Args:
11480: url: a full /uploaded/... url to delete
11481:
11482: =item *
11483:
11484: get_portfile_permissions():
11485: Args:
11486: domain: domain of user or course contain the portfolio files
11487: user: name of user or num of course contain the portfolio files
11488: Returns:
11489: hashref of a dump of the proper file_permissions.db
11490:
11491:
11492: =item *
11493:
11494: get_access_controls():
11495:
11496: Args:
11497: current_permissions: the hash ref returned from get_portfile_permissions()
11498: group: (optional) the group you want the files associated with
11499: file: (optional) the file you want access info on
11500:
11501: Returns:
11502: a hash (keys are file names) of hashes containing
11503: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11504: values are XML containing access control settings (see below)
11505:
11506: Internal notes:
11507:
11508: access controls are stored in file_permissions.db as key=value pairs.
11509: key -> path to file/file_name\0uniqueID:scope_end_start
11510: where scope -> public,guest,course,group,domains or users.
11511: end -> UNIX time for end of access (0 -> no end date)
11512: start -> UNIX time for start of access
11513:
11514: value -> XML description of access control
11515: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11516: <start></start>
11517: <end></end>
11518:
11519: <password></password> for scope type = guest
11520:
11521: <domain></domain> for scope type = course or group
11522: <number></number>
11523: <roles id="">
11524: <role></role>
11525: <access></access>
11526: <section></section>
11527: <group></group>
11528: </roles>
11529:
11530: <dom></dom> for scope type = domains
11531:
11532: <users> for scope type = users
11533: <user>
11534: <uname></uname>
11535: <udom></udom>
11536: </user>
11537: </users>
11538: </scope>
11539:
11540: Access data is also aggregated for each file in an additional key=value pair:
11541: key -> path to file/file_name\0accesscontrol
11542: value -> reference to hash
11543: hash contains key = value pairs
11544: where key = uniqueID:scope_end_start
11545: value = UNIX time record was last updated
11546:
11547: Used to improve speed of look-ups of access controls for each file.
11548:
11549: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11550:
11551: modify_access_controls():
11552:
11553: Modifies access controls for a portfolio file
11554: Args
11555: 1. file name
11556: 2. reference to hash of required changes,
11557: 3. domain
11558: 4. username
11559: where domain,username are the domain of the portfolio owner
11560: (either a user or a course)
11561:
11562: Returns:
11563: 1. result of additions or updates ('ok' or 'error', with error message).
11564: 2. result of deletions ('ok' or 'error', with error message).
11565: 3. reference to hash of any new or updated access controls.
11566: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11567: key = integer (inbound ID)
11568: value = uniqueID
11569:
11570: =back
11571:
11572: =head2 HTTP Helper Routines
11573:
11574: =over 4
11575:
11576: =item *
11577:
11578: escape() : unpack non-word characters into CGI-compatible hex codes
11579:
11580: =item *
11581:
11582: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11583:
11584: =back
11585:
11586: =head1 PRIVATE SUBROUTINES
11587:
11588: =head2 Underlying communication routines (Shouldn't call)
11589:
11590: =over 4
11591:
11592: =item *
11593:
11594: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11595:
11596: =item *
11597:
11598: reply() : uses subreply to send a message to remote machine, logs all failures
11599:
11600: =item *
11601:
11602: critical() : passes a critical message to another server; if cannot
11603: get through then place message in connection buffer directory and
11604: returns con_delayed, if incapable of saving message, returns
11605: con_failed
11606:
11607: =item *
11608:
11609: reconlonc() : tries to reconnect lonc client processes.
11610:
11611: =back
11612:
11613: =head2 Resource Access Logging
11614:
11615: =over 4
11616:
11617: =item *
11618:
11619: flushcourselogs() : flush (save) buffer logs and access logs
11620:
11621: =item *
11622:
11623: courselog($what) : save message for course in hash
11624:
11625: =item *
11626:
11627: courseacclog($what) : save message for course using &courselog(). Perform
11628: special processing for specific resource types (problems, exams, quizzes, etc).
11629:
11630: =item *
11631:
11632: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11633: as a PerlChildExitHandler
11634:
11635: =back
11636:
11637: =head2 Other
11638:
11639: =over 4
11640:
11641: =item *
11642:
11643: symblist($mapname,%newhash) : update symbolic storage links
11644:
11645: =back
11646:
11647: =cut
11648:
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