1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1111 2011/06/06 23:28:48 www 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,$cachetime);
195: }
196: }
197: }
198:
199: sub get_server_distarch {
200: my ($lonhost,$ignore_cache) = @_;
201: if (defined($lonhost)) {
202: if (!defined(&hostname($lonhost))) {
203: return;
204: }
205: my $cachetime = 12*3600;
206: if (!$ignore_cache) {
207: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
208: if (defined($cached)) {
209: return $distarch;
210: }
211: }
212: my $rep = &reply('serverdistarch',$lonhost);
213: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
214: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
215: $rep eq '') {
216: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
217: }
218: }
219: return;
220: }
221:
222: sub get_server_loncaparev {
223: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
224: if (defined($lonhost)) {
225: if (!defined(&hostname($lonhost))) {
226: undef($lonhost);
227: }
228: }
229: if (!defined($lonhost)) {
230: if (defined(&domain($dom,'primary'))) {
231: $lonhost=&domain($dom,'primary');
232: if ($lonhost eq 'no_host') {
233: undef($lonhost);
234: }
235: }
236: }
237: if (defined($lonhost)) {
238: my $cachetime = 12*3600;
239: if (!$ignore_cache) {
240: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
241: if (defined($cached)) {
242: return $loncaparev;
243: }
244: }
245: my ($answer,$loncaparev);
246: my @ids=¤t_machine_ids();
247: if (grep(/^\Q$lonhost\E$/,@ids)) {
248: $answer = $perlvar{'lonVersion'};
249: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
250: $loncaparev = $1;
251: }
252: } else {
253: $answer = &reply('serverloncaparev',$lonhost);
254: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
255: if ($caller eq 'loncron') {
256: my $ua=new LWP::UserAgent;
257: $ua->timeout(4);
258: my $protocol = $protocol{$lonhost};
259: $protocol = 'http' if ($protocol ne 'https');
260: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
261: my $request=new HTTP::Request('GET',$url);
262: my $response=$ua->request($request);
263: unless ($response->is_error()) {
264: my $content = $response->content;
265: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
266: $loncaparev = $1;
267: }
268: }
269: } else {
270: $loncaparev = $loncaparevs{$lonhost};
271: }
272: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
273: $loncaparev = $1;
274: }
275: }
276: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
277: }
278: }
279:
280: sub get_server_homeID {
281: my ($hostname,$ignore_cache,$caller) = @_;
282: unless ($ignore_cache) {
283: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
284: if (defined($cached)) {
285: return $serverhomeID;
286: }
287: }
288: my $cachetime = 12*3600;
289: my $serverhomeID;
290: if ($caller eq 'loncron') {
291: my @machine_ids = &machine_ids($hostname);
292: foreach my $id (@machine_ids) {
293: my $response = &reply('serverhomeID',$id);
294: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
295: $serverhomeID = $response;
296: last;
297: }
298: }
299: if ($serverhomeID eq '') {
300: $serverhomeID = $machine_ids[-1];
301: }
302: } else {
303: $serverhomeID = $serverhomeIDs{$hostname};
304: }
305: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
306: }
307:
308: # -------------------------------------------------- Non-critical communication
309: sub subreply {
310: my ($cmd,$server)=@_;
311: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
312: #
313: # With loncnew process trimming, there's a timing hole between lonc server
314: # process exit and the master server picking up the listen on the AF_UNIX
315: # socket. In that time interval, a lock file will exist:
316:
317: my $lockfile=$peerfile.".lock";
318: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
319: sleep(1);
320: }
321: # At this point, either a loncnew parent is listening or an old lonc
322: # or loncnew child is listening so we can connect or everything's dead.
323: #
324: # We'll give the connection a few tries before abandoning it. If
325: # connection is not possible, we'll con_lost back to the client.
326: #
327: my $client;
328: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
329: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
330: Type => SOCK_STREAM,
331: Timeout => 10);
332: if ($client) {
333: last; # Connected!
334: } else {
335: &create_connection(&hostname($server),$server);
336: }
337: sleep(1); # Try again later if failed connection.
338: }
339: my $answer;
340: if ($client) {
341: print $client "sethost:$server:$cmd\n";
342: $answer=<$client>;
343: if (!$answer) { $answer="con_lost"; }
344: chomp($answer);
345: } else {
346: $answer = 'con_lost'; # Failed connection.
347: }
348: return $answer;
349: }
350:
351: sub reply {
352: my ($cmd,$server)=@_;
353: unless (defined(&hostname($server))) { return 'no_such_host'; }
354: my $answer=subreply($cmd,$server);
355: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
356: &logthis("<font color=\"blue\">WARNING:".
357: " $cmd to $server returned $answer</font>");
358: }
359: return $answer;
360: }
361:
362: # ----------------------------------------------------------- Send USR1 to lonc
363:
364: sub reconlonc {
365: my ($lonid) = @_;
366: my $hostname = &hostname($lonid);
367: if ($lonid) {
368: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
369: if ($hostname && -e $peerfile) {
370: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
371: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
372: Type => SOCK_STREAM,
373: Timeout => 10);
374: if ($client) {
375: print $client ("reset_retries\n");
376: my $answer=<$client>;
377: #reset just this one.
378: }
379: }
380: return;
381: }
382:
383: &logthis("Trying to reconnect lonc");
384: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
385: if (open(my $fh,"<$loncfile")) {
386: my $loncpid=<$fh>;
387: chomp($loncpid);
388: if (kill 0 => $loncpid) {
389: &logthis("lonc at pid $loncpid responding, sending USR1");
390: kill USR1 => $loncpid;
391: sleep 1;
392: } else {
393: &logthis(
394: "<font color=\"blue\">WARNING:".
395: " lonc at pid $loncpid not responding, giving up</font>");
396: }
397: } else {
398: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
399: }
400: }
401:
402: # ------------------------------------------------------ Critical communication
403:
404: sub critical {
405: my ($cmd,$server)=@_;
406: unless (&hostname($server)) {
407: &logthis("<font color=\"blue\">WARNING:".
408: " Critical message to unknown server ($server)</font>");
409: return 'no_such_host';
410: }
411: my $answer=reply($cmd,$server);
412: if ($answer eq 'con_lost') {
413: &reconlonc("$perlvar{'lonSockDir'}/$server");
414: my $answer=reply($cmd,$server);
415: if ($answer eq 'con_lost') {
416: my $now=time;
417: my $middlename=$cmd;
418: $middlename=substr($middlename,0,16);
419: $middlename=~s/\W//g;
420: my $dfilename=
421: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
422: $dumpcount++;
423: {
424: my $dfh;
425: if (open($dfh,">$dfilename")) {
426: print $dfh "$cmd\n";
427: close($dfh);
428: }
429: }
430: sleep 2;
431: my $wcmd='';
432: {
433: my $dfh;
434: if (open($dfh,"<$dfilename")) {
435: $wcmd=<$dfh>;
436: close($dfh);
437: }
438: }
439: chomp($wcmd);
440: if ($wcmd eq $cmd) {
441: &logthis("<font color=\"blue\">WARNING: ".
442: "Connection buffer $dfilename: $cmd</font>");
443: &logperm("D:$server:$cmd");
444: return 'con_delayed';
445: } else {
446: &logthis("<font color=\"red\">CRITICAL:"
447: ." Critical connection failed: $server $cmd</font>");
448: &logperm("F:$server:$cmd");
449: return 'con_failed';
450: }
451: }
452: }
453: return $answer;
454: }
455:
456: # ------------------------------------------- check if return value is an error
457:
458: sub error {
459: my ($result) = @_;
460: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
461: if ($2 == 2) { return undef; }
462: return $1;
463: }
464: return undef;
465: }
466:
467: sub convert_and_load_session_env {
468: my ($lonidsdir,$handle)=@_;
469: my @profile;
470: {
471: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
472: if (!$opened) {
473: return 0;
474: }
475: flock($idf,LOCK_SH);
476: @profile=<$idf>;
477: close($idf);
478: }
479: my %temp_env;
480: foreach my $line (@profile) {
481: if ($line !~ m/=/) {
482: return 0;
483: }
484: chomp($line);
485: my ($envname,$envvalue)=split(/=/,$line,2);
486: $temp_env{&unescape($envname)} = &unescape($envvalue);
487: }
488: unlink("$lonidsdir/$handle.id");
489: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
490: 0640)) {
491: %disk_env = %temp_env;
492: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
493: untie(%disk_env);
494: }
495: return 1;
496: }
497:
498: # ------------------------------------------- Transfer profile into environment
499: my $env_loaded;
500: sub transfer_profile_to_env {
501: my ($lonidsdir,$handle,$force_transfer) = @_;
502: if (!$force_transfer && $env_loaded) { return; }
503:
504: if (!defined($lonidsdir)) {
505: $lonidsdir = $perlvar{'lonIDsDir'};
506: }
507: if (!defined($handle)) {
508: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
509: }
510:
511: my $convert;
512: {
513: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
514: if (!$opened) {
515: return;
516: }
517: flock($idf,LOCK_SH);
518: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
519: &GDBM_READER(),0640)) {
520: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
521: untie(%disk_env);
522: } else {
523: $convert = 1;
524: }
525: }
526: if ($convert) {
527: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
528: &logthis("Failed to load session, or convert session.");
529: }
530: }
531:
532: my %remove;
533: while ( my $envname = each(%env) ) {
534: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
535: if ($time < time-300) {
536: $remove{$key}++;
537: }
538: }
539: }
540:
541: $env{'user.environment'} = "$lonidsdir/$handle.id";
542: $env_loaded=1;
543: foreach my $expired_key (keys(%remove)) {
544: &delenv($expired_key);
545: }
546: }
547:
548: # ---------------------------------------------------- Check for valid session
549: sub check_for_valid_session {
550: my ($r) = @_;
551: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
552: my $lonid=$cookies{'lonID'};
553: return undef if (!$lonid);
554:
555: my $handle=&LONCAPA::clean_handle($lonid->value);
556: my $lonidsdir=$r->dir_config('lonIDsDir');
557: return undef if (!-e "$lonidsdir/$handle.id");
558:
559: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
560: return undef if (!$opened);
561:
562: flock($idf,LOCK_SH);
563: my %disk_env;
564: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
565: &GDBM_READER(),0640)) {
566: return undef;
567: }
568:
569: if (!defined($disk_env{'user.name'})
570: || !defined($disk_env{'user.domain'})) {
571: return undef;
572: }
573: return $handle;
574: }
575:
576: sub timed_flock {
577: my ($file,$lock_type) = @_;
578: my $failed=0;
579: eval {
580: local $SIG{__DIE__}='DEFAULT';
581: local $SIG{ALRM}=sub {
582: $failed=1;
583: die("failed lock");
584: };
585: alarm(13);
586: flock($file,$lock_type);
587: alarm(0);
588: };
589: if ($failed) {
590: return undef;
591: } else {
592: return 1;
593: }
594: }
595:
596: # ---------------------------------------------------------- Append Environment
597:
598: sub appenv {
599: my ($newenv,$roles) = @_;
600: if (ref($newenv) eq 'HASH') {
601: foreach my $key (keys(%{$newenv})) {
602: my $refused = 0;
603: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
604: $refused = 1;
605: if (ref($roles) eq 'ARRAY') {
606: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
607: if (grep(/^\Q$role\E$/,@{$roles})) {
608: $refused = 0;
609: }
610: }
611: }
612: if ($refused) {
613: &logthis("<font color=\"blue\">WARNING: ".
614: "Attempt to modify environment ".$key." to ".$newenv->{$key}
615: .'</font>');
616: delete($newenv->{$key});
617: } else {
618: $env{$key}=$newenv->{$key};
619: }
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: while (my ($key,$value) = each(%{$newenv})) {
628: $disk_env{$key} = $value;
629: }
630: untie(%disk_env);
631: }
632: }
633: return 'ok';
634: }
635: # ----------------------------------------------------- Delete from Environment
636:
637: sub delenv {
638: my ($delthis,$regexp,$roles) = @_;
639: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
640: my $refused = 1;
641: if (ref($roles) eq 'ARRAY') {
642: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
643: if (grep(/^\Q$role\E$/,@{$roles})) {
644: $refused = 0;
645: }
646: }
647: if ($refused) {
648: &logthis("<font color=\"blue\">WARNING: ".
649: "Attempt to delete from environment ".$delthis);
650: return 'error';
651: }
652: }
653: my $opened = open(my $env_file,'+<',$env{'user.environment'});
654: if ($opened
655: && &timed_flock($env_file,LOCK_EX)
656: &&
657: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
658: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
659: foreach my $key (keys(%disk_env)) {
660: if ($regexp) {
661: if ($key=~/^$delthis/) {
662: delete($env{$key});
663: delete($disk_env{$key});
664: }
665: } else {
666: if ($key=~/^\Q$delthis\E/) {
667: delete($env{$key});
668: delete($disk_env{$key});
669: }
670: }
671: }
672: untie(%disk_env);
673: }
674: return 'ok';
675: }
676:
677: sub get_env_multiple {
678: my ($name) = @_;
679: my @values;
680: if (defined($env{$name})) {
681: # exists is it an array
682: if (ref($env{$name})) {
683: @values=@{ $env{$name} };
684: } else {
685: $values[0]=$env{$name};
686: }
687: }
688: return(@values);
689: }
690:
691: # ------------------------------------------------------------------- Locking
692:
693: sub set_lock {
694: my ($text)=@_;
695: $locknum++;
696: my $id=$$.'-'.$locknum;
697: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
698: 'session.lock.'.$id => $text});
699: return $id;
700: }
701:
702: sub get_locks {
703: my $num=0;
704: my %texts=();
705: foreach my $lock (split(/\,/,$env{'session.locks'})) {
706: if ($lock=~/\w/) {
707: $num++;
708: $texts{$lock}=$env{'session.lock.'.$lock};
709: }
710: }
711: return ($num,%texts);
712: }
713:
714: sub remove_lock {
715: my ($id)=@_;
716: my $newlocks='';
717: foreach my $lock (split(/\,/,$env{'session.locks'})) {
718: if (($lock=~/\w/) && ($lock ne $id)) {
719: $newlocks.=','.$lock;
720: }
721: }
722: &appenv({'session.locks' => $newlocks});
723: &delenv('session.lock.'.$id);
724: }
725:
726: sub remove_all_locks {
727: my $activelocks=$env{'session.locks'};
728: foreach my $lock (split(/\,/,$env{'session.locks'})) {
729: if ($lock=~/\w/) {
730: &remove_lock($lock);
731: }
732: }
733: }
734:
735:
736: # ------------------------------------------ Find out current server userload
737: sub userload {
738: my $numusers=0;
739: {
740: opendir(LONIDS,$perlvar{'lonIDsDir'});
741: my $filename;
742: my $curtime=time;
743: while ($filename=readdir(LONIDS)) {
744: next if ($filename eq '.' || $filename eq '..');
745: next if ($filename =~ /publicuser_\d+\.id/);
746: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
747: if ($curtime-$mtime < 1800) { $numusers++; }
748: }
749: closedir(LONIDS);
750: }
751: my $userloadpercent=0;
752: my $maxuserload=$perlvar{'lonUserLoadLim'};
753: if ($maxuserload) {
754: $userloadpercent=100*$numusers/$maxuserload;
755: }
756: $userloadpercent=sprintf("%.2f",$userloadpercent);
757: return $userloadpercent;
758: }
759:
760: # ------------------------------ Find server with least workload from spare.tab
761:
762: sub spareserver {
763: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
764: my $spare_server;
765: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
766: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
767: : $userloadpercent;
768: my ($uint_dom,$remotesessions);
769: if (($udom ne '') && (&domain($udom) ne '')) {
770: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
771: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
772: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
773: $remotesessions = $udomdefaults{'remotesessions'};
774: }
775: foreach my $try_server (@{ $spareid{'primary'} }) {
776: if ($uint_dom) {
777: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
778: $try_server));
779: }
780: ($spare_server, $lowest_load) =
781: &compare_server_load($try_server, $spare_server, $lowest_load);
782: }
783:
784: my $found_server = ($spare_server ne '' && $lowest_load < 100);
785:
786: if (!$found_server) {
787: foreach my $try_server (@{ $spareid{'default'} }) {
788: if ($uint_dom) {
789: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
790: $try_server));
791: }
792: ($spare_server, $lowest_load) =
793: &compare_server_load($try_server, $spare_server, $lowest_load);
794: }
795: }
796:
797: if (!$want_server_name) {
798: my $protocol = 'http';
799: if ($protocol{$spare_server} eq 'https') {
800: $protocol = $protocol{$spare_server};
801: }
802: if (defined($spare_server)) {
803: my $hostname = &hostname($spare_server);
804: if (defined($hostname)) {
805: $spare_server = $protocol.'://'.$hostname;
806: }
807: }
808: }
809: return $spare_server;
810: }
811:
812: sub compare_server_load {
813: my ($try_server, $spare_server, $lowest_load) = @_;
814:
815: my $loadans = &reply('load', $try_server);
816: my $userloadans = &reply('userload',$try_server);
817:
818: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
819: return; #didn't get a number from the server
820: }
821:
822: my $load;
823: if ($loadans =~ /\d/) {
824: if ($userloadans =~ /\d/) {
825: #both are numbers, pick the bigger one
826: $load = ($loadans > $userloadans) ? $loadans
827: : $userloadans;
828: } else {
829: $load = $loadans;
830: }
831: } else {
832: $load = $userloadans;
833: }
834:
835: if (($load =~ /\d/) && ($load < $lowest_load)) {
836: $spare_server = $try_server;
837: $lowest_load = $load;
838: }
839: return ($spare_server,$lowest_load);
840: }
841:
842: # --------------------------- ask offload servers if user already has a session
843: sub find_existing_session {
844: my ($udom,$uname) = @_;
845: foreach my $try_server (@{ $spareid{'primary'} },
846: @{ $spareid{'default'} }) {
847: return $try_server if (&has_user_session($try_server, $udom, $uname));
848: }
849: return;
850: }
851:
852: # -------------------------------- ask if server already has a session for user
853: sub has_user_session {
854: my ($lonid,$udom,$uname) = @_;
855: my $result = &reply(join(':','userhassession',
856: map {&escape($_)} ($udom,$uname)),$lonid);
857: return 1 if ($result eq 'ok');
858:
859: return 0;
860: }
861:
862: # --------- determine least loaded server in a user's domain which allows login
863:
864: sub choose_server {
865: my ($udom) = @_;
866: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
867: my %servers = &get_servers($udom);
868: my $lowest_load = 30000;
869: my ($login_host,$hostname);
870: foreach my $lonhost (keys(%servers)) {
871: my $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
872: if ($loginvia eq '') {
873: ($login_host, $lowest_load) =
874: &compare_server_load($lonhost, $login_host, $lowest_load);
875: }
876: }
877: if ($login_host ne '') {
878: $hostname = $servers{$login_host};
879: }
880: return ($login_host,$hostname);
881: }
882:
883: # --------------------------------------------- Try to change a user's password
884:
885: sub changepass {
886: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
887: $currentpass = &escape($currentpass);
888: $newpass = &escape($newpass);
889: my $lonhost = $perlvar{'lonHostID'};
890: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
891: $server);
892: if (! $answer) {
893: &logthis("No reply on password change request to $server ".
894: "by $uname in domain $udom.");
895: } elsif ($answer =~ "^ok") {
896: &logthis("$uname in $udom successfully changed their password ".
897: "on $server.");
898: } elsif ($answer =~ "^pwchange_failure") {
899: &logthis("$uname in $udom was unable to change their password ".
900: "on $server. The action was blocked by either lcpasswd ".
901: "or pwchange");
902: } elsif ($answer =~ "^non_authorized") {
903: &logthis("$uname in $udom did not get their password correct when ".
904: "attempting to change it on $server.");
905: } elsif ($answer =~ "^auth_mode_error") {
906: &logthis("$uname in $udom attempted to change their password despite ".
907: "not being locally or internally authenticated on $server.");
908: } elsif ($answer =~ "^unknown_user") {
909: &logthis("$uname in $udom attempted to change their password ".
910: "on $server but were unable to because $server is not ".
911: "their home server.");
912: } elsif ($answer =~ "^refused") {
913: &logthis("$server refused to change $uname in $udom password because ".
914: "it was sent an unencrypted request to change the password.");
915: } elsif ($answer =~ "invalid_client") {
916: &logthis("$server refused to change $uname in $udom password because ".
917: "it was a reset by e-mail originating from an invalid server.");
918: }
919: return $answer;
920: }
921:
922: # ----------------------- Try to determine user's current authentication scheme
923:
924: sub queryauthenticate {
925: my ($uname,$udom)=@_;
926: my $uhome=&homeserver($uname,$udom);
927: if (!$uhome) {
928: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
929: return 'no_host';
930: }
931: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
932: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
933: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
934: }
935: return $answer;
936: }
937:
938: # --------- Try to authenticate user from domain's lib servers (first this one)
939:
940: sub authenticate {
941: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
942: $upass=&escape($upass);
943: $uname= &LONCAPA::clean_username($uname);
944: my $uhome=&homeserver($uname,$udom,1);
945: my $newhome;
946: if ((!$uhome) || ($uhome eq 'no_host')) {
947: # Maybe the machine was offline and only re-appeared again recently?
948: &reconlonc();
949: # One more
950: $uhome=&homeserver($uname,$udom,1);
951: if (($uhome eq 'no_host') && $checkdefauth) {
952: if (defined(&domain($udom,'primary'))) {
953: $newhome=&domain($udom,'primary');
954: }
955: if ($newhome ne '') {
956: $uhome = $newhome;
957: }
958: }
959: if ((!$uhome) || ($uhome eq 'no_host')) {
960: &logthis("User $uname at $udom is unknown in authenticate");
961: return 'no_host';
962: }
963: }
964: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
965: if ($answer eq 'authorized') {
966: if ($newhome) {
967: &logthis("User $uname at $udom authorized by $uhome, but needs account");
968: return 'no_account_on_host';
969: } else {
970: &logthis("User $uname at $udom authorized by $uhome");
971: return $uhome;
972: }
973: }
974: if ($answer eq 'non_authorized') {
975: &logthis("User $uname at $udom rejected by $uhome");
976: return 'no_host';
977: }
978: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
979: return 'no_host';
980: }
981:
982: sub can_host_session {
983: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
984: my $canhost = 1;
985: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
986: if (ref($remotesessions) eq 'HASH') {
987: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
988: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
989: $canhost = 0;
990: } else {
991: $canhost = 1;
992: }
993: }
994: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
995: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
996: $canhost = 1;
997: } else {
998: $canhost = 0;
999: }
1000: }
1001: if ($canhost) {
1002: if ($remotesessions->{'version'} ne '') {
1003: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1004: if ($reqmajor ne '' && $reqminor ne '') {
1005: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1006: my $major = $1;
1007: my $minor = $2;
1008: if (($major < $reqmajor ) ||
1009: (($major == $reqmajor) && ($minor < $reqminor))) {
1010: $canhost = 0;
1011: }
1012: } else {
1013: $canhost = 0;
1014: }
1015: }
1016: }
1017: }
1018: }
1019: if ($canhost) {
1020: if (ref($hostedsessions) eq 'HASH') {
1021: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1022: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'excludedomain'}})) {
1023: $canhost = 0;
1024: } else {
1025: $canhost = 1;
1026: }
1027: }
1028: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1029: if (grep(/^\Q$udom\E$/,@{$hostedsessions->{'includedomain'}})) {
1030: $canhost = 1;
1031: } else {
1032: $canhost = 0;
1033: }
1034: }
1035: }
1036: }
1037: return $canhost;
1038: }
1039:
1040: sub spare_can_host {
1041: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1042: my $canhost=1;
1043: my @intdoms;
1044: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1045: if (ref($internet_names) eq 'ARRAY') {
1046: @intdoms = @{$internet_names};
1047: }
1048: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1049: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1050: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1051: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1052: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1053: $canhost = &can_host_session($udom,$try_server,$remoterev,
1054: $remotesessions,
1055: $defdomdefaults{'hostedsessions'});
1056: }
1057: return $canhost;
1058: }
1059:
1060: # ---------------------- Find the homebase for a user from domain's lib servers
1061:
1062: my %homecache;
1063: sub homeserver {
1064: my ($uname,$udom,$ignoreBadCache)=@_;
1065: my $index="$uname:$udom";
1066:
1067: if (exists($homecache{$index})) { return $homecache{$index}; }
1068:
1069: my %servers = &get_servers($udom,'library');
1070: foreach my $tryserver (keys(%servers)) {
1071: next if ($ignoreBadCache ne 'true' &&
1072: exists($badServerCache{$tryserver}));
1073:
1074: my $answer=reply("home:$udom:$uname",$tryserver);
1075: if ($answer eq 'found') {
1076: delete($badServerCache{$tryserver});
1077: return $homecache{$index}=$tryserver;
1078: } elsif ($answer eq 'no_host') {
1079: $badServerCache{$tryserver}=1;
1080: }
1081: }
1082: return 'no_host';
1083: }
1084:
1085: # ------------------------------------- Find the usernames behind a list of IDs
1086:
1087: sub idget {
1088: my ($udom,@ids)=@_;
1089: my %returnhash=();
1090:
1091: my %servers = &get_servers($udom,'library');
1092: foreach my $tryserver (keys(%servers)) {
1093: my $idlist=join('&',@ids);
1094: $idlist=~tr/A-Z/a-z/;
1095: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1096: my @answer=();
1097: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1098: @answer=split(/\&/,$reply);
1099: } ;
1100: my $i;
1101: for ($i=0;$i<=$#ids;$i++) {
1102: if ($answer[$i]) {
1103: $returnhash{$ids[$i]}=$answer[$i];
1104: }
1105: }
1106: }
1107: return %returnhash;
1108: }
1109:
1110: # ------------------------------------- Find the IDs behind a list of usernames
1111:
1112: sub idrget {
1113: my ($udom,@unames)=@_;
1114: my %returnhash=();
1115: foreach my $uname (@unames) {
1116: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1117: }
1118: return %returnhash;
1119: }
1120:
1121: # ------------------------------- Store away a list of names and associated IDs
1122:
1123: sub idput {
1124: my ($udom,%ids)=@_;
1125: my %servers=();
1126: foreach my $uname (keys(%ids)) {
1127: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1128: my $uhom=&homeserver($uname,$udom);
1129: if ($uhom ne 'no_host') {
1130: my $id=&escape($ids{$uname});
1131: $id=~tr/A-Z/a-z/;
1132: my $esc_unam=&escape($uname);
1133: if ($servers{$uhom}) {
1134: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1135: } else {
1136: $servers{$uhom}=$id.'='.$esc_unam;
1137: }
1138: }
1139: }
1140: foreach my $server (keys(%servers)) {
1141: &critical('idput:'.$udom.':'.$servers{$server},$server);
1142: }
1143: }
1144:
1145: # ------------------------------dump from db file owned by domainconfig user
1146: sub dump_dom {
1147: my ($namespace,$udom,$regexp,$range)=@_;
1148: if (!$udom) {
1149: $udom=$env{'user.domain'};
1150: }
1151: my %returnhash;
1152: if ($udom) {
1153: my $uname = &get_domainconfiguser($udom);
1154: %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
1155: }
1156: return %returnhash;
1157: }
1158:
1159: # ------------------------------------------ get items from domain db files
1160:
1161: sub get_dom {
1162: my ($namespace,$storearr,$udom,$uhome)=@_;
1163: my $items='';
1164: foreach my $item (@$storearr) {
1165: $items.=&escape($item).'&';
1166: }
1167: $items=~s/\&$//;
1168: if (!$udom) {
1169: $udom=$env{'user.domain'};
1170: if (defined(&domain($udom,'primary'))) {
1171: $uhome=&domain($udom,'primary');
1172: } else {
1173: undef($uhome);
1174: }
1175: } else {
1176: if (!$uhome) {
1177: if (defined(&domain($udom,'primary'))) {
1178: $uhome=&domain($udom,'primary');
1179: }
1180: }
1181: }
1182: if ($udom && $uhome && ($uhome ne 'no_host')) {
1183: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1184: my %returnhash;
1185: if ($rep eq '' || $rep =~ /^error: 2 /) {
1186: return %returnhash;
1187: }
1188: my @pairs=split(/\&/,$rep);
1189: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1190: return @pairs;
1191: }
1192: my $i=0;
1193: foreach my $item (@$storearr) {
1194: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1195: $i++;
1196: }
1197: return %returnhash;
1198: } else {
1199: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1200: }
1201: }
1202:
1203: # -------------------------------------------- put items in domain db files
1204:
1205: sub put_dom {
1206: my ($namespace,$storehash,$udom,$uhome)=@_;
1207: if (!$udom) {
1208: $udom=$env{'user.domain'};
1209: if (defined(&domain($udom,'primary'))) {
1210: $uhome=&domain($udom,'primary');
1211: } else {
1212: undef($uhome);
1213: }
1214: } else {
1215: if (!$uhome) {
1216: if (defined(&domain($udom,'primary'))) {
1217: $uhome=&domain($udom,'primary');
1218: }
1219: }
1220: }
1221: if ($udom && $uhome && ($uhome ne 'no_host')) {
1222: my $items='';
1223: foreach my $item (keys(%$storehash)) {
1224: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1225: }
1226: $items=~s/\&$//;
1227: return &reply("putdom:$udom:$namespace:$items",$uhome);
1228: } else {
1229: &logthis("put_dom failed - no homeserver and/or domain");
1230: }
1231: }
1232:
1233: # --------------------- newput for items in db file owned by domainconfig user
1234: sub newput_dom {
1235: my ($namespace,$storehash,$udom) = @_;
1236: my $result;
1237: if (!$udom) {
1238: $udom=$env{'user.domain'};
1239: }
1240: if ($udom) {
1241: my $uname = &get_domainconfiguser($udom);
1242: $result = &newput($namespace,$storehash,$udom,$uname);
1243: }
1244: return $result;
1245: }
1246:
1247: # --------------------- delete for items in db file owned by domainconfig user
1248: sub del_dom {
1249: my ($namespace,$storearr,$udom)=@_;
1250: if (ref($storearr) eq 'ARRAY') {
1251: if (!$udom) {
1252: $udom=$env{'user.domain'};
1253: }
1254: if ($udom) {
1255: my $uname = &get_domainconfiguser($udom);
1256: return &del($namespace,$storearr,$udom,$uname);
1257: }
1258: }
1259: }
1260:
1261: # ----------------------------------construct domainconfig user for a domain
1262: sub get_domainconfiguser {
1263: my ($udom) = @_;
1264: return $udom.'-domainconfig';
1265: }
1266:
1267: sub retrieve_inst_usertypes {
1268: my ($udom) = @_;
1269: my (%returnhash,@order);
1270: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1271: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1272: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1273: %returnhash = %{$domdefs{'inststatustypes'}};
1274: @order = @{$domdefs{'inststatusorder'}};
1275: } else {
1276: if (defined(&domain($udom,'primary'))) {
1277: my $uhome=&domain($udom,'primary');
1278: my $rep=&reply("inst_usertypes:$udom",$uhome);
1279: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1280: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1281: return (\%returnhash,\@order);
1282: }
1283: my ($hashitems,$orderitems) = split(/:/,$rep);
1284: my @pairs=split(/\&/,$hashitems);
1285: foreach my $item (@pairs) {
1286: my ($key,$value)=split(/=/,$item,2);
1287: $key = &unescape($key);
1288: next if ($key =~ /^error: 2 /);
1289: $returnhash{$key}=&thaw_unescape($value);
1290: }
1291: my @esc_order = split(/\&/,$orderitems);
1292: foreach my $item (@esc_order) {
1293: push(@order,&unescape($item));
1294: }
1295: } else {
1296: &logthis("get_dom failed - no primary domain server for $udom");
1297: }
1298: }
1299: return (\%returnhash,\@order);
1300: }
1301:
1302: sub is_domainimage {
1303: my ($url) = @_;
1304: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1305: if (&domain($1) ne '') {
1306: return '1';
1307: }
1308: }
1309: return;
1310: }
1311:
1312: sub inst_directory_query {
1313: my ($srch) = @_;
1314: my $udom = $srch->{'srchdomain'};
1315: my %results;
1316: my $homeserver = &domain($udom,'primary');
1317: my $outcome;
1318: if ($homeserver ne '') {
1319: my $queryid=&reply("querysend:instdirsearch:".
1320: &escape($srch->{'srchby'}).':'.
1321: &escape($srch->{'srchterm'}).':'.
1322: &escape($srch->{'srchtype'}),$homeserver);
1323: my $host=&hostname($homeserver);
1324: if ($queryid !~/^\Q$host\E\_/) {
1325: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1326: return;
1327: }
1328: my $response = &get_query_reply($queryid);
1329: my $maxtries = 5;
1330: my $tries = 1;
1331: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1332: $response = &get_query_reply($queryid);
1333: $tries ++;
1334: }
1335:
1336: if (!&error($response) && $response ne 'refused') {
1337: if ($response eq 'unavailable') {
1338: $outcome = $response;
1339: } else {
1340: $outcome = 'ok';
1341: my @matches = split(/\n/,$response);
1342: foreach my $match (@matches) {
1343: my ($key,$value) = split(/=/,$match);
1344: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1345: }
1346: }
1347: }
1348: }
1349: return ($outcome,%results);
1350: }
1351:
1352: sub usersearch {
1353: my ($srch) = @_;
1354: my $dom = $srch->{'srchdomain'};
1355: my %results;
1356: my %libserv = &all_library();
1357: my $query = 'usersearch';
1358: foreach my $tryserver (keys(%libserv)) {
1359: if (&host_domain($tryserver) eq $dom) {
1360: my $host=&hostname($tryserver);
1361: my $queryid=
1362: &reply("querysend:".&escape($query).':'.
1363: &escape($srch->{'srchby'}).':'.
1364: &escape($srch->{'srchtype'}).':'.
1365: &escape($srch->{'srchterm'}),$tryserver);
1366: if ($queryid !~/^\Q$host\E\_/) {
1367: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1368: next;
1369: }
1370: my $reply = &get_query_reply($queryid);
1371: my $maxtries = 1;
1372: my $tries = 1;
1373: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1374: $reply = &get_query_reply($queryid);
1375: $tries ++;
1376: }
1377: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1378: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1379: } else {
1380: my @matches;
1381: if ($reply =~ /\n/) {
1382: @matches = split(/\n/,$reply);
1383: } else {
1384: @matches = split(/\&/,$reply);
1385: }
1386: foreach my $match (@matches) {
1387: my ($uname,$udom,%userhash);
1388: foreach my $entry (split(/:/,$match)) {
1389: my ($key,$value) =
1390: map {&unescape($_);} split(/=/,$entry);
1391: $userhash{$key} = $value;
1392: if ($key eq 'username') {
1393: $uname = $value;
1394: } elsif ($key eq 'domain') {
1395: $udom = $value;
1396: }
1397: }
1398: $results{$uname.':'.$udom} = \%userhash;
1399: }
1400: }
1401: }
1402: }
1403: return %results;
1404: }
1405:
1406: sub get_instuser {
1407: my ($udom,$uname,$id) = @_;
1408: my $homeserver = &domain($udom,'primary');
1409: my ($outcome,%results);
1410: if ($homeserver ne '') {
1411: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1412: &escape($id).':'.&escape($udom),$homeserver);
1413: my $host=&hostname($homeserver);
1414: if ($queryid !~/^\Q$host\E\_/) {
1415: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1416: return;
1417: }
1418: my $response = &get_query_reply($queryid);
1419: my $maxtries = 5;
1420: my $tries = 1;
1421: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1422: $response = &get_query_reply($queryid);
1423: $tries ++;
1424: }
1425: if (!&error($response) && $response ne 'refused') {
1426: if ($response eq 'unavailable') {
1427: $outcome = $response;
1428: } else {
1429: $outcome = 'ok';
1430: my @matches = split(/\n/,$response);
1431: foreach my $match (@matches) {
1432: my ($key,$value) = split(/=/,$match);
1433: $results{&unescape($key)} = &thaw_unescape($value);
1434: }
1435: }
1436: }
1437: }
1438: my %userinfo;
1439: if (ref($results{$uname}) eq 'HASH') {
1440: %userinfo = %{$results{$uname}};
1441: }
1442: return ($outcome,%userinfo);
1443: }
1444:
1445: sub inst_rulecheck {
1446: my ($udom,$uname,$id,$item,$rules) = @_;
1447: my %returnhash;
1448: if ($udom ne '') {
1449: if (ref($rules) eq 'ARRAY') {
1450: @{$rules} = map {&escape($_);} (@{$rules});
1451: my $rulestr = join(':',@{$rules});
1452: my $homeserver=&domain($udom,'primary');
1453: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1454: my $response;
1455: if ($item eq 'username') {
1456: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1457: ':'.&escape($uname).':'.$rulestr,
1458: $homeserver));
1459: } elsif ($item eq 'id') {
1460: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1461: ':'.&escape($id).':'.$rulestr,
1462: $homeserver));
1463: } elsif ($item eq 'selfcreate') {
1464: $response=&unescape(&reply('instselfcreatecheck:'.
1465: &escape($udom).':'.&escape($uname).
1466: ':'.$rulestr,$homeserver));
1467: }
1468: if ($response ne 'refused') {
1469: my @pairs=split(/\&/,$response);
1470: foreach my $item (@pairs) {
1471: my ($key,$value)=split(/=/,$item,2);
1472: $key = &unescape($key);
1473: next if ($key =~ /^error: 2 /);
1474: $returnhash{$key}=&thaw_unescape($value);
1475: }
1476: }
1477: }
1478: }
1479: }
1480: return %returnhash;
1481: }
1482:
1483: sub inst_userrules {
1484: my ($udom,$check) = @_;
1485: my (%ruleshash,@ruleorder);
1486: if ($udom ne '') {
1487: my $homeserver=&domain($udom,'primary');
1488: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1489: my $response;
1490: if ($check eq 'id') {
1491: $response=&reply('instidrules:'.&escape($udom),
1492: $homeserver);
1493: } elsif ($check eq 'email') {
1494: $response=&reply('instemailrules:'.&escape($udom),
1495: $homeserver);
1496: } else {
1497: $response=&reply('instuserrules:'.&escape($udom),
1498: $homeserver);
1499: }
1500: if (($response ne 'refused') && ($response ne 'error') &&
1501: ($response ne 'unknown_cmd') &&
1502: ($response ne 'no_such_host')) {
1503: my ($hashitems,$orderitems) = split(/:/,$response);
1504: my @pairs=split(/\&/,$hashitems);
1505: foreach my $item (@pairs) {
1506: my ($key,$value)=split(/=/,$item,2);
1507: $key = &unescape($key);
1508: next if ($key =~ /^error: 2 /);
1509: $ruleshash{$key}=&thaw_unescape($value);
1510: }
1511: my @esc_order = split(/\&/,$orderitems);
1512: foreach my $item (@esc_order) {
1513: push(@ruleorder,&unescape($item));
1514: }
1515: }
1516: }
1517: }
1518: return (\%ruleshash,\@ruleorder);
1519: }
1520:
1521: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1522:
1523: sub get_domain_defaults {
1524: my ($domain) = @_;
1525: my $cachetime = 60*60*24;
1526: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1527: if (defined($cached)) {
1528: if (ref($result) eq 'HASH') {
1529: return %{$result};
1530: }
1531: }
1532: my %domdefaults;
1533: my %domconfig =
1534: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1535: 'requestcourses','inststatus',
1536: 'coursedefaults','usersessions'],$domain);
1537: if (ref($domconfig{'defaults'}) eq 'HASH') {
1538: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1539: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1540: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1541: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1542: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1543: } else {
1544: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1545: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1546: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1547: }
1548: if (ref($domconfig{'quotas'}) eq 'HASH') {
1549: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1550: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1551: } else {
1552: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1553: }
1554: my @usertools = ('aboutme','blog','portfolio');
1555: foreach my $item (@usertools) {
1556: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1557: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1558: }
1559: }
1560: }
1561: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1562: foreach my $item ('official','unofficial','community') {
1563: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1564: }
1565: }
1566: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1567: foreach my $item ('inststatustypes','inststatusorder') {
1568: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1569: }
1570: }
1571: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1572: foreach my $item ('canuse_pdfforms') {
1573: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1574: }
1575: }
1576: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1577: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1578: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1579: }
1580: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1581: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1582: }
1583: }
1584: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1585: $cachetime);
1586: return %domdefaults;
1587: }
1588:
1589: # --------------------------------------------------- Assign a key to a student
1590:
1591: sub assign_access_key {
1592: #
1593: # a valid key looks like uname:udom#comments
1594: # comments are being appended
1595: #
1596: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1597: $kdom=
1598: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1599: $knum=
1600: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1601: $cdom=
1602: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1603: $cnum=
1604: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1605: $udom=$env{'user.name'} unless (defined($udom));
1606: $uname=$env{'user.domain'} unless (defined($uname));
1607: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1608: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1609: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1610: # assigned to this person
1611: # - this should not happen,
1612: # unless something went wrong
1613: # the first time around
1614: # ready to assign
1615: $logentry=$1.'; '.$logentry;
1616: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1617: $kdom,$knum) eq 'ok') {
1618: # key now belongs to user
1619: my $envkey='key.'.$cdom.'_'.$cnum;
1620: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1621: &appenv({'environment.'.$envkey => $ckey});
1622: return 'ok';
1623: } else {
1624: return
1625: 'error: Count not permanently assign key, will need to be re-entered later.';
1626: }
1627: } else {
1628: return 'error: Could not assign key, try again later.';
1629: }
1630: } elsif (!$existing{$ckey}) {
1631: # the key does not exist
1632: return 'error: The key does not exist';
1633: } else {
1634: # the key is somebody else's
1635: return 'error: The key is already in use';
1636: }
1637: }
1638:
1639: # ------------------------------------------ put an additional comment on a key
1640:
1641: sub comment_access_key {
1642: #
1643: # a valid key looks like uname:udom#comments
1644: # comments are being appended
1645: #
1646: my ($ckey,$cdom,$cnum,$logentry)=@_;
1647: $cdom=
1648: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1649: $cnum=
1650: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1651: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1652: if ($existing{$ckey}) {
1653: $existing{$ckey}.='; '.$logentry;
1654: # ready to assign
1655: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1656: $cdom,$cnum) eq 'ok') {
1657: return 'ok';
1658: } else {
1659: return 'error: Count not store comment.';
1660: }
1661: } else {
1662: # the key does not exist
1663: return 'error: The key does not exist';
1664: }
1665: }
1666:
1667: # ------------------------------------------------------ Generate a set of keys
1668:
1669: sub generate_access_keys {
1670: my ($number,$cdom,$cnum,$logentry)=@_;
1671: $cdom=
1672: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1673: $cnum=
1674: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1675: unless (&allowed('mky',$cdom)) { return 0; }
1676: unless (($cdom) && ($cnum)) { return 0; }
1677: if ($number>10000) { return 0; }
1678: sleep(2); # make sure don't get same seed twice
1679: srand(time()^($$+($$<<15))); # from "Programming Perl"
1680: my $total=0;
1681: for (my $i=1;$i<=$number;$i++) {
1682: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1683: sprintf("%lx",int(100000*rand)).'-'.
1684: sprintf("%lx",int(100000*rand));
1685: $newkey=~s/1/g/g; # folks mix up 1 and l
1686: $newkey=~s/0/h/g; # and also 0 and O
1687: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1688: if ($existing{$newkey}) {
1689: $i--;
1690: } else {
1691: if (&put('accesskeys',
1692: { $newkey => '# generated '.localtime().
1693: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1694: '; '.$logentry },
1695: $cdom,$cnum) eq 'ok') {
1696: $total++;
1697: }
1698: }
1699: }
1700: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1701: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1702: return $total;
1703: }
1704:
1705: # ------------------------------------------------------- Validate an accesskey
1706:
1707: sub validate_access_key {
1708: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1709: $cdom=
1710: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1711: $cnum=
1712: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1713: $udom=$env{'user.domain'} unless (defined($udom));
1714: $uname=$env{'user.name'} unless (defined($uname));
1715: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1716: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1717: }
1718:
1719: # ------------------------------------- Find the section of student in a course
1720: sub devalidate_getsection_cache {
1721: my ($udom,$unam,$courseid)=@_;
1722: my $hashid="$udom:$unam:$courseid";
1723: &devalidate_cache_new('getsection',$hashid);
1724: }
1725:
1726: sub courseid_to_courseurl {
1727: my ($courseid) = @_;
1728: #already url style courseid
1729: return $courseid if ($courseid =~ m{^/});
1730:
1731: if (exists($env{'course.'.$courseid.'.num'})) {
1732: my $cnum = $env{'course.'.$courseid.'.num'};
1733: my $cdom = $env{'course.'.$courseid.'.domain'};
1734: return "/$cdom/$cnum";
1735: }
1736:
1737: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1738: if (exists($courseinfo{'num'})) {
1739: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1740: }
1741:
1742: return undef;
1743: }
1744:
1745: sub getsection {
1746: my ($udom,$unam,$courseid)=@_;
1747: my $cachetime=1800;
1748:
1749: my $hashid="$udom:$unam:$courseid";
1750: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1751: if (defined($cached)) { return $result; }
1752:
1753: my %Pending;
1754: my %Expired;
1755: #
1756: # Each role can either have not started yet (pending), be active,
1757: # or have expired.
1758: #
1759: # If there is an active role, we are done.
1760: #
1761: # If there is more than one role which has not started yet,
1762: # choose the one which will start sooner
1763: # If there is one role which has not started yet, return it.
1764: #
1765: # If there is more than one expired role, choose the one which ended last.
1766: # If there is a role which has expired, return it.
1767: #
1768: $courseid = &courseid_to_courseurl($courseid);
1769: my $extra = &freeze_escape({'skipcheck' => 1});
1770: my %roleshash = &dump('roles',$udom,$unam,$courseid,undef,$extra);
1771: foreach my $key (keys(%roleshash)) {
1772: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1773: my $section=$1;
1774: if ($key eq $courseid.'_st') { $section=''; }
1775: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1776: my $now=time;
1777: if (defined($end) && $end && ($now > $end)) {
1778: $Expired{$end}=$section;
1779: next;
1780: }
1781: if (defined($start) && $start && ($now < $start)) {
1782: $Pending{$start}=$section;
1783: next;
1784: }
1785: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1786: }
1787: #
1788: # Presumedly there will be few matching roles from the above
1789: # loop and the sorting time will be negligible.
1790: if (scalar(keys(%Pending))) {
1791: my ($time) = sort {$a <=> $b} keys(%Pending);
1792: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1793: }
1794: if (scalar(keys(%Expired))) {
1795: my @sorted = sort {$a <=> $b} keys(%Expired);
1796: my $time = pop(@sorted);
1797: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1798: }
1799: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1800: }
1801:
1802: sub save_cache {
1803: &purge_remembered();
1804: #&Apache::loncommon::validate_page();
1805: undef(%env);
1806: undef($env_loaded);
1807: }
1808:
1809: my $to_remember=-1;
1810: my %remembered;
1811: my %accessed;
1812: my $kicks=0;
1813: my $hits=0;
1814: sub make_key {
1815: my ($name,$id) = @_;
1816: if (length($id) > 65
1817: && length(&escape($id)) > 200) {
1818: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1819: }
1820: return &escape($name.':'.$id);
1821: }
1822:
1823: sub devalidate_cache_new {
1824: my ($name,$id,$debug) = @_;
1825: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1826: $id=&make_key($name,$id);
1827: $memcache->delete($id);
1828: delete($remembered{$id});
1829: delete($accessed{$id});
1830: }
1831:
1832: sub is_cached_new {
1833: my ($name,$id,$debug) = @_;
1834: $id=&make_key($name,$id);
1835: if (exists($remembered{$id})) {
1836: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1837: $accessed{$id}=[&gettimeofday()];
1838: $hits++;
1839: return ($remembered{$id},1);
1840: }
1841: my $value = $memcache->get($id);
1842: if (!(defined($value))) {
1843: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1844: return (undef,undef);
1845: }
1846: if ($value eq '__undef__') {
1847: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1848: $value=undef;
1849: }
1850: &make_room($id,$value,$debug);
1851: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1852: return ($value,1);
1853: }
1854:
1855: sub do_cache_new {
1856: my ($name,$id,$value,$time,$debug) = @_;
1857: $id=&make_key($name,$id);
1858: my $setvalue=$value;
1859: if (!defined($setvalue)) {
1860: $setvalue='__undef__';
1861: }
1862: if (!defined($time) ) {
1863: $time=600;
1864: }
1865: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1866: my $result = $memcache->set($id,$setvalue,$time);
1867: if (! $result) {
1868: &logthis("caching of id -> $id failed");
1869: $memcache->disconnect_all();
1870: }
1871: # need to make a copy of $value
1872: &make_room($id,$value,$debug);
1873: return $value;
1874: }
1875:
1876: sub make_room {
1877: my ($id,$value,$debug)=@_;
1878:
1879: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1880: : $value;
1881: if ($to_remember<0) { return; }
1882: $accessed{$id}=[&gettimeofday()];
1883: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1884: my $to_kick;
1885: my $max_time=0;
1886: foreach my $other (keys(%accessed)) {
1887: if (&tv_interval($accessed{$other}) > $max_time) {
1888: $to_kick=$other;
1889: $max_time=&tv_interval($accessed{$other});
1890: }
1891: }
1892: delete($remembered{$to_kick});
1893: delete($accessed{$to_kick});
1894: $kicks++;
1895: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1896: return;
1897: }
1898:
1899: sub purge_remembered {
1900: #&logthis("Tossing ".scalar(keys(%remembered)));
1901: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1902: undef(%remembered);
1903: undef(%accessed);
1904: }
1905: # ------------------------------------- Read an entry from a user's environment
1906:
1907: sub userenvironment {
1908: my ($udom,$unam,@what)=@_;
1909: my $items;
1910: foreach my $item (@what) {
1911: $items.=&escape($item).'&';
1912: }
1913: $items=~s/\&$//;
1914: my %returnhash=();
1915: my $uhome = &homeserver($unam,$udom);
1916: unless ($uhome eq 'no_host') {
1917: my @answer=split(/\&/,
1918: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
1919: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
1920: return %returnhash;
1921: }
1922: my $i;
1923: for ($i=0;$i<=$#what;$i++) {
1924: $returnhash{$what[$i]}=&unescape($answer[$i]);
1925: }
1926: }
1927: return %returnhash;
1928: }
1929:
1930: # ---------------------------------------------------------- Get a studentphoto
1931: sub studentphoto {
1932: my ($udom,$unam,$ext) = @_;
1933: my $home=&Apache::lonnet::homeserver($unam,$udom);
1934: if (defined($env{'request.course.id'})) {
1935: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1936: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1937: return(&retrievestudentphoto($udom,$unam,$ext));
1938: } else {
1939: my ($result,$perm_reqd)=
1940: &Apache::lonnet::auto_photo_permission($unam,$udom);
1941: if ($result eq 'ok') {
1942: if (!($perm_reqd eq 'yes')) {
1943: return(&retrievestudentphoto($udom,$unam,$ext));
1944: }
1945: }
1946: }
1947: }
1948: } else {
1949: my ($result,$perm_reqd) =
1950: &Apache::lonnet::auto_photo_permission($unam,$udom);
1951: if ($result eq 'ok') {
1952: if (!($perm_reqd eq 'yes')) {
1953: return(&retrievestudentphoto($udom,$unam,$ext));
1954: }
1955: }
1956: }
1957: return '/adm/lonKaputt/lonlogo_broken.gif';
1958: }
1959:
1960: sub retrievestudentphoto {
1961: my ($udom,$unam,$ext,$type) = @_;
1962: my $home=&Apache::lonnet::homeserver($unam,$udom);
1963: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1964: if ($ret eq 'ok') {
1965: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1966: if ($type eq 'thumbnail') {
1967: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1968: }
1969: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1970: return $tokenurl;
1971: } else {
1972: if ($type eq 'thumbnail') {
1973: return '/adm/lonKaputt/genericstudent_tn.gif';
1974: } else {
1975: return '/adm/lonKaputt/lonlogo_broken.gif';
1976: }
1977: }
1978: }
1979:
1980: # -------------------------------------------------------------------- New chat
1981:
1982: sub chatsend {
1983: my ($newentry,$anon,$group)=@_;
1984: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1985: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1986: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1987: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1988: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1989: &escape($newentry)).':'.$group,$chome);
1990: }
1991:
1992: # ------------------------------------------ Find current version of a resource
1993:
1994: sub getversion {
1995: my $fname=&clutter(shift);
1996: unless ($fname=~/^\/res\//) { return -1; }
1997: return ¤tversion(&filelocation('',$fname));
1998: }
1999:
2000: sub currentversion {
2001: my $fname=shift;
2002: my ($result,$cached)=&is_cached_new('resversion',$fname);
2003: if (defined($cached)) { return $result; }
2004: my $author=$fname;
2005: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2006: my ($udom,$uname)=split(/\//,$author);
2007: my $home=homeserver($uname,$udom);
2008: if ($home eq 'no_host') {
2009: return -1;
2010: }
2011: my $answer=reply("currentversion:$fname",$home);
2012: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2013: return -1;
2014: }
2015: return &do_cache_new('resversion',$fname,$answer,600);
2016: }
2017:
2018: #
2019: # Return special version number of resource if set by override, empty otherwise
2020: #
2021: sub usedversion {
2022: my $fname=shift;
2023: unless ($fname) { $fname=$env{'request.uri'}; }
2024: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2025: if ($urlversion) { return $urlversion; }
2026: return '';
2027: }
2028:
2029: # ----------------------------- Subscribe to a resource, return URL if possible
2030:
2031: sub subscribe {
2032: my $fname=shift;
2033: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2034: $fname=~s/[\n\r]//g;
2035: my $author=$fname;
2036: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2037: my ($udom,$uname)=split(/\//,$author);
2038: my $home=homeserver($uname,$udom);
2039: if ($home eq 'no_host') {
2040: return 'not_found';
2041: }
2042: my $answer=reply("sub:$fname",$home);
2043: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2044: $answer.=' by '.$home;
2045: }
2046: return $answer;
2047: }
2048:
2049: # -------------------------------------------------------------- Replicate file
2050:
2051: sub repcopy {
2052: my $filename=shift;
2053: $filename=~s/\/+/\//g;
2054: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
2055: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
2056: if ($filename=~m|^/home/httpd/html/userfiles/| or
2057: $filename=~m -^/*(uploaded|editupload)/-) {
2058: return &repcopy_userfile($filename);
2059: }
2060: $filename=~s/[\n\r]//g;
2061: my $transname="$filename.in.transfer";
2062: # FIXME: this should flock
2063: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2064: my $remoteurl=subscribe($filename);
2065: if ($remoteurl =~ /^con_lost by/) {
2066: &logthis("Subscribe returned $remoteurl: $filename");
2067: return 'unavailable';
2068: } elsif ($remoteurl eq 'not_found') {
2069: #&logthis("Subscribe returned not_found: $filename");
2070: return 'not_found';
2071: } elsif ($remoteurl =~ /^rejected by/) {
2072: &logthis("Subscribe returned $remoteurl: $filename");
2073: return 'forbidden';
2074: } elsif ($remoteurl eq 'directory') {
2075: return 'ok';
2076: } else {
2077: my $author=$filename;
2078: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2079: my ($udom,$uname)=split(/\//,$author);
2080: my $home=homeserver($uname,$udom);
2081: unless ($home eq $perlvar{'lonHostID'}) {
2082: my @parts=split(/\//,$filename);
2083: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2084: if ($path ne "$perlvar{'lonDocRoot'}/res") {
2085: &logthis("Malconfiguration for replication: $filename");
2086: return 'bad_request';
2087: }
2088: my $count;
2089: for ($count=5;$count<$#parts;$count++) {
2090: $path.="/$parts[$count]";
2091: if ((-e $path)!=1) {
2092: mkdir($path,0777);
2093: }
2094: }
2095: my $ua=new LWP::UserAgent;
2096: my $request=new HTTP::Request('GET',"$remoteurl");
2097: my $response=$ua->request($request,$transname);
2098: if ($response->is_error()) {
2099: unlink($transname);
2100: my $message=$response->status_line;
2101: &logthis("<font color=\"blue\">WARNING:"
2102: ." LWP get: $message: $filename</font>");
2103: return 'unavailable';
2104: } else {
2105: if ($remoteurl!~/\.meta$/) {
2106: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2107: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2108: if ($mresponse->is_error()) {
2109: unlink($filename.'.meta');
2110: &logthis(
2111: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2112: }
2113: }
2114: rename($transname,$filename);
2115: return 'ok';
2116: }
2117: }
2118: }
2119: }
2120:
2121: # ------------------------------------------------ Get server side include body
2122: sub ssi_body {
2123: my ($filelink,%form)=@_;
2124: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2125: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2126: }
2127: my $output='';
2128: my $response;
2129: if ($filelink=~/^https?\:/) {
2130: ($output,$response)=&externalssi($filelink);
2131: } else {
2132: $filelink .= $filelink=~/\?/ ? '&' : '?';
2133: $filelink .= 'inhibitmenu=yes';
2134: ($output,$response)=&ssi($filelink,%form);
2135: }
2136: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2137: $output=~s/^.*?\<body[^\>]*\>//si;
2138: $output=~s/\<\/body\s*\>.*?$//si;
2139: if (wantarray) {
2140: return ($output, $response);
2141: } else {
2142: return $output;
2143: }
2144: }
2145:
2146: # --------------------------------------------------------- Server Side Include
2147:
2148: sub absolute_url {
2149: my ($host_name) = @_;
2150: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2151: if ($host_name eq '') {
2152: $host_name = $ENV{'SERVER_NAME'};
2153: }
2154: return $protocol.$host_name;
2155: }
2156:
2157: #
2158: # Server side include.
2159: # Parameters:
2160: # fn Possibly encrypted resource name/id.
2161: # form Hash that describes how the rendering should be done
2162: # and other things.
2163: # Returns:
2164: # Scalar context: The content of the response.
2165: # Array context: 2 element list of the content and the full response object.
2166: #
2167: sub ssi {
2168:
2169: my ($fn,%form)=@_;
2170: my $ua=new LWP::UserAgent;
2171: my $request;
2172:
2173: $form{'no_update_last_known'}=1;
2174: &Apache::lonenc::check_encrypt(\$fn);
2175: if (%form) {
2176: $request=new HTTP::Request('POST',&absolute_url().$fn);
2177: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2178: } else {
2179: $request=new HTTP::Request('GET',&absolute_url().$fn);
2180: }
2181:
2182: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2183: my $response=$ua->request($request);
2184:
2185: if (wantarray) {
2186: return ($response->content, $response);
2187: } else {
2188: return $response->content;
2189: }
2190: }
2191:
2192: sub externalssi {
2193: my ($url)=@_;
2194: my $ua=new LWP::UserAgent;
2195: my $request=new HTTP::Request('GET',$url);
2196: my $response=$ua->request($request);
2197: if (wantarray) {
2198: return ($response->content, $response);
2199: } else {
2200: return $response->content;
2201: }
2202: }
2203:
2204: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2205:
2206: sub allowuploaded {
2207: my ($srcurl,$url)=@_;
2208: $url=&clutter(&declutter($url));
2209: my $dir=$url;
2210: $dir=~s/\/[^\/]+$//;
2211: my %httpref=();
2212: my $httpurl=&hreflocation('',$url);
2213: $httpref{'httpref.'.$httpurl}=$srcurl;
2214: &Apache::lonnet::appenv(\%httpref);
2215: }
2216:
2217: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2218: # input: action, courseID, current domain, intended
2219: # path to file, source of file, instruction to parse file for objects,
2220: # ref to hash for embedded objects,
2221: # ref to hash for codebase of java objects.
2222: # reference to scalar to accommodate mime type determined
2223: # from File::MMagic if $parser = parse.
2224: #
2225: # output: url to file (if action was uploaddoc),
2226: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2227: #
2228: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2229: # course.
2230: #
2231: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2232: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2233: # course's home server.
2234: #
2235: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2236: # be copied from $source (current location) to
2237: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2238: # and will then be copied to
2239: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2240: # course's home server.
2241: #
2242: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2243: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2244: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2245: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2246: # in course's home server.
2247: #
2248:
2249: sub process_coursefile {
2250: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2251: $mimetype)=@_;
2252: my $fetchresult;
2253: my $home=&homeserver($docuname,$docudom);
2254: if ($action eq 'propagate') {
2255: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2256: $home);
2257: } else {
2258: my $fpath = '';
2259: my $fname = $file;
2260: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2261: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2262: my $filepath = &build_filepath($fpath);
2263: if ($action eq 'copy') {
2264: if ($source eq '') {
2265: $fetchresult = 'no source file';
2266: return $fetchresult;
2267: } else {
2268: my $destination = $filepath.'/'.$fname;
2269: rename($source,$destination);
2270: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2271: $home);
2272: }
2273: } elsif ($action eq 'uploaddoc') {
2274: open(my $fh,'>'.$filepath.'/'.$fname);
2275: print $fh $env{'form.'.$source};
2276: close($fh);
2277: if ($parser eq 'parse') {
2278: my $mm = new File::MMagic;
2279: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2280: if ($type eq 'text/html') {
2281: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2282: unless ($parse_result eq 'ok') {
2283: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2284: }
2285: }
2286: if (ref($mimetype)) {
2287: $$mimetype = $type;
2288: }
2289: }
2290: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2291: $home);
2292: if ($fetchresult eq 'ok') {
2293: return '/uploaded/'.$fpath.'/'.$fname;
2294: } else {
2295: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2296: ' to host '.$home.': '.$fetchresult);
2297: return '/adm/notfound.html';
2298: }
2299: }
2300: }
2301: unless ( $fetchresult eq 'ok') {
2302: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2303: ' to host '.$home.': '.$fetchresult);
2304: }
2305: return $fetchresult;
2306: }
2307:
2308: sub build_filepath {
2309: my ($fpath) = @_;
2310: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2311: unless ($fpath eq '') {
2312: my @parts=split('/',$fpath);
2313: foreach my $part (@parts) {
2314: $filepath.= '/'.$part;
2315: if ((-e $filepath)!=1) {
2316: mkdir($filepath,0777);
2317: }
2318: }
2319: }
2320: return $filepath;
2321: }
2322:
2323: sub store_edited_file {
2324: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2325: my $file = $primary_url;
2326: $file =~ s#^/uploaded/$docudom/$docuname/##;
2327: my $fpath = '';
2328: my $fname = $file;
2329: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2330: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2331: my $filepath = &build_filepath($fpath);
2332: open(my $fh,'>'.$filepath.'/'.$fname);
2333: print $fh $content;
2334: close($fh);
2335: my $home=&homeserver($docuname,$docudom);
2336: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2337: $home);
2338: if ($$fetchresult eq 'ok') {
2339: return '/uploaded/'.$fpath.'/'.$fname;
2340: } else {
2341: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2342: ' to host '.$home.': '.$$fetchresult);
2343: return '/adm/notfound.html';
2344: }
2345: }
2346:
2347: sub clean_filename {
2348: my ($fname,$args)=@_;
2349: # Replace Windows backslashes by forward slashes
2350: $fname=~s/\\/\//g;
2351: if (!$args->{'keep_path'}) {
2352: # Get rid of everything but the actual filename
2353: $fname=~s/^.*\/([^\/]+)$/$1/;
2354: }
2355: # Replace spaces by underscores
2356: $fname=~s/\s+/\_/g;
2357: # Replace all other weird characters by nothing
2358: $fname=~s{[^/\w\.\-]}{}g;
2359: # Replace all .\d. sequences with _\d. so they no longer look like version
2360: # numbers
2361: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2362: return $fname;
2363: }
2364: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2365: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2366: # image with the same aspect ratio as the original, but with dimensions which do
2367: # not exceed $resizewidth and $resizeheight.
2368:
2369: sub resizeImage {
2370: my ($img_path,$resizewidth,$resizeheight) = @_;
2371: my $ima = Image::Magick->new;
2372: my $resized;
2373: if (-e $img_path) {
2374: $ima->Read($img_path);
2375: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2376: my $width = $ima->Get('width');
2377: my $height = $ima->Get('height');
2378: if ($width > $resizewidth) {
2379: my $factor = $width/$resizewidth;
2380: my $newheight = $height/$factor;
2381: $ima->Scale(width=>$resizewidth,height=>$newheight);
2382: $resized = 1;
2383: }
2384: }
2385: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2386: my $width = $ima->Get('width');
2387: my $height = $ima->Get('height');
2388: if ($height > $resizeheight) {
2389: my $factor = $height/$resizeheight;
2390: my $newwidth = $width/$factor;
2391: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2392: $resized = 1;
2393: }
2394: }
2395: if ($resized) {
2396: $ima->Write($img_path);
2397: }
2398: }
2399: return;
2400: }
2401:
2402: # --------------- Take an uploaded file and put it into the userfiles directory
2403: # input: $formname - the contents of the file are in $env{"form.$formname"}
2404: # the desired filename is in $env{"form.$formname.filename"}
2405: # $context - possible values: coursedoc, existingfile, overwrite,
2406: # canceloverwrite, or ''.
2407: # if 'coursedoc': upload to the current course
2408: # if 'existingfile': write file to tmp/overwrites directory
2409: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2410: # $context is passed as argument to &finishuserfileupload
2411: # $subdir - directory in userfile to store the file into
2412: # $parser - instruction to parse file for objects ($parser = parse)
2413: # $allfiles - reference to hash for embedded objects
2414: # $codebase - reference to hash for codebase of java objects
2415: # $desuname - username for permanent storage of uploaded file
2416: # $dsetudom - domain for permanaent storage of uploaded file
2417: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2418: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2419: # $resizewidth - width (pixels) to which to resize uploaded image
2420: # $resizeheight - height (pixels) to which to resize uploaded image
2421: # $mimetype - reference to scalar to accommodate mime type determined
2422: # from File::MMagic if $parser = parse.
2423: #
2424: # output: url of file in userspace, or error: <message>
2425: # or /adm/notfound.html if failure to upload occurse
2426:
2427: sub userfileupload {
2428: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2429: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2430: if (!defined($subdir)) { $subdir='unknown'; }
2431: my $fname=$env{'form.'.$formname.'.filename'};
2432: $fname=&clean_filename($fname);
2433: # See if there is anything left
2434: unless ($fname) { return 'error: no uploaded file'; }
2435: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2436: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2437: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2438: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2439: my $now = time;
2440: my $filepath;
2441: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2442: $filepath = 'tmp/helprequests/'.$now;
2443: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2444: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2445: '_'.$env{'user.domain'}.'/pending';
2446: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2447: my ($docuname,$docudom);
2448: if ($destudom) {
2449: $docudom = $destudom;
2450: } else {
2451: $docudom = $env{'user.domain'};
2452: }
2453: if ($destuname) {
2454: $docuname = $destuname;
2455: } else {
2456: $docuname = $env{'user.name'};
2457: }
2458: if (exists($env{'form.group'})) {
2459: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2460: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2461: }
2462: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2463: if ($context eq 'canceloverwrite') {
2464: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2465: if (-e $tempfile) {
2466: my @info = stat($tempfile);
2467: if ($info[9] eq $env{'form.timestamp'}) {
2468: unlink($tempfile);
2469: }
2470: }
2471: return;
2472: }
2473: }
2474: # Create the directory if not present
2475: my @parts=split(/\//,$filepath);
2476: my $fullpath = $perlvar{'lonDaemons'};
2477: for (my $i=0;$i<@parts;$i++) {
2478: $fullpath .= '/'.$parts[$i];
2479: if ((-e $fullpath)!=1) {
2480: mkdir($fullpath,0777);
2481: }
2482: }
2483: open(my $fh,'>'.$fullpath.'/'.$fname);
2484: print $fh $env{'form.'.$formname};
2485: close($fh);
2486: if ($context eq 'existingfile') {
2487: my @info = stat($fullpath.'/'.$fname);
2488: return ($fullpath.'/'.$fname,$info[9]);
2489: } else {
2490: return $fullpath.'/'.$fname;
2491: }
2492: }
2493: if ($subdir eq 'scantron') {
2494: $fname = 'scantron_orig_'.$fname;
2495: } else {
2496: $fname="$subdir/$fname";
2497: }
2498: if ($context eq 'coursedoc') {
2499: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2500: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2501: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2502: return &finishuserfileupload($docuname,$docudom,
2503: $formname,$fname,$parser,$allfiles,
2504: $codebase,$thumbwidth,$thumbheight,
2505: $resizewidth,$resizeheight,$context,$mimetype);
2506: } else {
2507: $fname=$env{'form.folder'}.'/'.$fname;
2508: return &process_coursefile('uploaddoc',$docuname,$docudom,
2509: $fname,$formname,$parser,
2510: $allfiles,$codebase,$mimetype);
2511: }
2512: } elsif (defined($destuname)) {
2513: my $docuname=$destuname;
2514: my $docudom=$destudom;
2515: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2516: $parser,$allfiles,$codebase,
2517: $thumbwidth,$thumbheight,
2518: $resizewidth,$resizeheight,$context,$mimetype);
2519: } else {
2520: my $docuname=$env{'user.name'};
2521: my $docudom=$env{'user.domain'};
2522: if (exists($env{'form.group'})) {
2523: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2524: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2525: }
2526: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2527: $parser,$allfiles,$codebase,
2528: $thumbwidth,$thumbheight,
2529: $resizewidth,$resizeheight,$context,$mimetype);
2530: }
2531: }
2532:
2533: sub finishuserfileupload {
2534: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2535: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2536: my $path=$docudom.'/'.$docuname.'/';
2537: my $filepath=$perlvar{'lonDocRoot'};
2538:
2539: my ($fnamepath,$file,$fetchthumb);
2540: $file=$fname;
2541: if ($fname=~m|/|) {
2542: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2543: $path.=$fnamepath.'/';
2544: }
2545: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2546: my $count;
2547: for ($count=4;$count<=$#parts;$count++) {
2548: $filepath.="/$parts[$count]";
2549: if ((-e $filepath)!=1) {
2550: mkdir($filepath,0777);
2551: }
2552: }
2553:
2554: # Save the file
2555: {
2556: if (!open(FH,'>'.$filepath.'/'.$file)) {
2557: &logthis('Failed to create '.$filepath.'/'.$file);
2558: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2559: return '/adm/notfound.html';
2560: }
2561: if ($context eq 'overwrite') {
2562: my $source = $perlvar{'lonDaemons'}.'/tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2563: my $target = $filepath.'/'.$file;
2564: if (-e $source) {
2565: my @info = stat($source);
2566: if ($info[9] eq $env{'form.timestamp'}) {
2567: unless (&File::Copy::move($source,$target)) {
2568: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2569: return "Moving from $source failed";
2570: }
2571: } else {
2572: return "Temporary file: $source had unexpected date/time for last modification";
2573: }
2574: } else {
2575: return "Temporary file: $source missing";
2576: }
2577: } elsif (!print FH ($env{'form.'.$formname})) {
2578: &logthis('Failed to write to '.$filepath.'/'.$file);
2579: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2580: return '/adm/notfound.html';
2581: }
2582: close(FH);
2583: if ($resizewidth && $resizeheight) {
2584: my $mm = new File::MMagic;
2585: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2586: if ($mime_type =~ m{^image/}) {
2587: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2588: }
2589: }
2590: }
2591: if ($parser eq 'parse') {
2592: my $mm = new File::MMagic;
2593: my $type = $mm->checktype_filename($filepath.'/'.$file);
2594: if ($type eq 'text/html') {
2595: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
2596: $allfiles,$codebase);
2597: unless ($parse_result eq 'ok') {
2598: &logthis('Failed to parse '.$filepath.$file.
2599: ' for embedded media: '.$parse_result);
2600: }
2601: }
2602: if (ref($mimetype)) {
2603: $$mimetype = $type;
2604: }
2605: }
2606: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2607: my $input = $filepath.'/'.$file;
2608: my $output = $filepath.'/'.'tn-'.$file;
2609: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2610: system("convert -sample $thumbsize $input $output");
2611: if (-e $filepath.'/'.'tn-'.$file) {
2612: $fetchthumb = 1;
2613: }
2614: }
2615:
2616: # Notify homeserver to grep it
2617: #
2618: my $docuhome=&homeserver($docuname,$docudom);
2619: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2620: if ($fetchresult eq 'ok') {
2621: if ($fetchthumb) {
2622: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2623: if ($thumbresult ne 'ok') {
2624: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2625: $docuhome.': '.$thumbresult);
2626: }
2627: }
2628: #
2629: # Return the URL to it
2630: return '/uploaded/'.$path.$file;
2631: } else {
2632: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2633: ': '.$fetchresult);
2634: return '/adm/notfound.html';
2635: }
2636: }
2637:
2638: sub extract_embedded_items {
2639: my ($fullpath,$allfiles,$codebase,$content) = @_;
2640: my @state = ();
2641: my %javafiles = (
2642: codebase => '',
2643: code => '',
2644: archive => ''
2645: );
2646: my %mediafiles = (
2647: src => '',
2648: movie => '',
2649: );
2650: my $p;
2651: if ($content) {
2652: $p = HTML::LCParser->new($content);
2653: } else {
2654: $p = HTML::LCParser->new($fullpath);
2655: }
2656: while (my $t=$p->get_token()) {
2657: if ($t->[0] eq 'S') {
2658: my ($tagname, $attr) = ($t->[1],$t->[2]);
2659: push(@state, $tagname);
2660: if (lc($tagname) eq 'allow') {
2661: &add_filetype($allfiles,$attr->{'src'},'src');
2662: }
2663: if (lc($tagname) eq 'img') {
2664: &add_filetype($allfiles,$attr->{'src'},'src');
2665: }
2666: if (lc($tagname) eq 'a') {
2667: &add_filetype($allfiles,$attr->{'href'},'href');
2668: }
2669: if (lc($tagname) eq 'script') {
2670: if ($attr->{'archive'} =~ /\.jar$/i) {
2671: &add_filetype($allfiles,$attr->{'archive'},'archive');
2672: } else {
2673: &add_filetype($allfiles,$attr->{'src'},'src');
2674: }
2675: }
2676: if (lc($tagname) eq 'link') {
2677: if (lc($attr->{'rel'}) eq 'stylesheet') {
2678: &add_filetype($allfiles,$attr->{'href'},'href');
2679: }
2680: }
2681: if (lc($tagname) eq 'object' ||
2682: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2683: foreach my $item (keys(%javafiles)) {
2684: $javafiles{$item} = '';
2685: }
2686: }
2687: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2688: my $name = lc($attr->{'name'});
2689: foreach my $item (keys(%javafiles)) {
2690: if ($name eq $item) {
2691: $javafiles{$item} = $attr->{'value'};
2692: last;
2693: }
2694: }
2695: foreach my $item (keys(%mediafiles)) {
2696: if ($name eq $item) {
2697: &add_filetype($allfiles, $attr->{'value'}, 'value');
2698: last;
2699: }
2700: }
2701: }
2702: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2703: foreach my $item (keys(%javafiles)) {
2704: if ($attr->{$item}) {
2705: $javafiles{$item} = $attr->{$item};
2706: last;
2707: }
2708: }
2709: foreach my $item (keys(%mediafiles)) {
2710: if ($attr->{$item}) {
2711: &add_filetype($allfiles,$attr->{$item},$item);
2712: last;
2713: }
2714: }
2715: }
2716: } elsif ($t->[0] eq 'E') {
2717: my ($tagname) = ($t->[1]);
2718: if ($javafiles{'codebase'} ne '') {
2719: $javafiles{'codebase'} .= '/';
2720: }
2721: if (lc($tagname) eq 'applet' ||
2722: lc($tagname) eq 'object' ||
2723: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2724: ) {
2725: foreach my $item (keys(%javafiles)) {
2726: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2727: my $file=$javafiles{'codebase'}.$javafiles{$item};
2728: &add_filetype($allfiles,$file,$item);
2729: }
2730: }
2731: }
2732: pop @state;
2733: }
2734: }
2735: return 'ok';
2736: }
2737:
2738: sub add_filetype {
2739: my ($allfiles,$file,$type)=@_;
2740: if (exists($allfiles->{$file})) {
2741: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2742: push(@{$allfiles->{$file}}, &escape($type));
2743: }
2744: } else {
2745: @{$allfiles->{$file}} = (&escape($type));
2746: }
2747: }
2748:
2749: sub removeuploadedurl {
2750: my ($url)=@_;
2751: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2752: return &removeuserfile($uname,$udom,$fname);
2753: }
2754:
2755: sub removeuserfile {
2756: my ($docuname,$docudom,$fname)=@_;
2757: my $home=&homeserver($docuname,$docudom);
2758: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2759: if ($result eq 'ok') {
2760: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2761: my $metafile = $fname.'.meta';
2762: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2763: my $url = "/uploaded/$docudom/$docuname/$fname";
2764: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2765: my $sqlresult =
2766: &update_portfolio_table($docuname,$docudom,$file,
2767: 'portfolio_metadata',$group,
2768: 'delete');
2769: }
2770: }
2771: return $result;
2772: }
2773:
2774: sub mkdiruserfile {
2775: my ($docuname,$docudom,$dir)=@_;
2776: my $home=&homeserver($docuname,$docudom);
2777: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2778: }
2779:
2780: sub renameuserfile {
2781: my ($docuname,$docudom,$old,$new)=@_;
2782: my $home=&homeserver($docuname,$docudom);
2783: my $result = &reply("renameuserfile:$docudom:$docuname:".
2784: &escape("$old").':'.&escape("$new"),$home);
2785: if ($result eq 'ok') {
2786: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2787: my $oldmeta = $old.'.meta';
2788: my $newmeta = $new.'.meta';
2789: my $metaresult =
2790: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2791: my $url = "/uploaded/$docudom/$docuname/$old";
2792: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2793: my $sqlresult =
2794: &update_portfolio_table($docuname,$docudom,$file,
2795: 'portfolio_metadata',$group,
2796: 'delete');
2797: }
2798: }
2799: return $result;
2800: }
2801:
2802: # ------------------------------------------------------------------------- Log
2803:
2804: sub log {
2805: my ($dom,$nam,$hom,$what)=@_;
2806: return critical("log:$dom:$nam:$what",$hom);
2807: }
2808:
2809: # ------------------------------------------------------------------ Course Log
2810: #
2811: # This routine flushes several buffers of non-mission-critical nature
2812: #
2813:
2814: sub flushcourselogs {
2815: &logthis('Flushing log buffers');
2816: #
2817: # course logs
2818: # This is a log of all transactions in a course, which can be used
2819: # for data mining purposes
2820: #
2821: # It also collects the courseid database, which lists last transaction
2822: # times and course titles for all courseids
2823: #
2824: my %courseidbuffer=();
2825: foreach my $crsid (keys(%courselogs)) {
2826: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2827: &escape($courselogs{$crsid}),
2828: $coursehombuf{$crsid}) eq 'ok') {
2829: delete $courselogs{$crsid};
2830: } else {
2831: &logthis('Failed to flush log buffer for '.$crsid);
2832: if (length($courselogs{$crsid})>40000) {
2833: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2834: " exceeded maximum size, deleting.</font>");
2835: delete $courselogs{$crsid};
2836: }
2837: }
2838: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2839: 'description' => $coursedescrbuf{$crsid},
2840: 'inst_code' => $courseinstcodebuf{$crsid},
2841: 'type' => $coursetypebuf{$crsid},
2842: 'owner' => $courseownerbuf{$crsid},
2843: };
2844: }
2845: #
2846: # Write course id database (reverse lookup) to homeserver of courses
2847: # Is used in pickcourse
2848: #
2849: foreach my $crs_home (keys(%courseidbuffer)) {
2850: my $response = &courseidput(&host_domain($crs_home),
2851: $courseidbuffer{$crs_home},
2852: $crs_home,'timeonly');
2853: }
2854: #
2855: # File accesses
2856: # Writes to the dynamic metadata of resources to get hit counts, etc.
2857: #
2858: foreach my $entry (keys(%accesshash)) {
2859: if ($entry =~ /___count$/) {
2860: my ($dom,$name);
2861: ($dom,$name,undef)=
2862: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2863: if (! defined($dom) || $dom eq '' ||
2864: ! defined($name) || $name eq '') {
2865: my $cid = $env{'request.course.id'};
2866: $dom = $env{'request.'.$cid.'.domain'};
2867: $name = $env{'request.'.$cid.'.num'};
2868: }
2869: my $value = $accesshash{$entry};
2870: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2871: my %temphash=($url => $value);
2872: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2873: if ($result eq 'ok') {
2874: delete $accesshash{$entry};
2875: } elsif ($result eq 'unknown_cmd') {
2876: # Target server has old code running on it.
2877: my %temphash=($entry => $value);
2878: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2879: delete $accesshash{$entry};
2880: }
2881: }
2882: } else {
2883: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2884: my %temphash=($entry => $accesshash{$entry});
2885: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2886: delete $accesshash{$entry};
2887: }
2888: }
2889: }
2890: #
2891: # Roles
2892: # Reverse lookup of user roles for course faculty/staff and co-authorship
2893: #
2894: foreach my $entry (keys(%userrolehash)) {
2895: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2896: split(/\:/,$entry);
2897: if (&Apache::lonnet::put('nohist_userroles',
2898: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2899: $rudom,$runame) eq 'ok') {
2900: delete $userrolehash{$entry};
2901: }
2902: }
2903: #
2904: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2905: #
2906: my %domrolebuffer = ();
2907: foreach my $entry (keys(%domainrolehash)) {
2908: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2909: if ($domrolebuffer{$rudom}) {
2910: $domrolebuffer{$rudom}.='&'.&escape($entry).
2911: '='.&escape($domainrolehash{$entry});
2912: } else {
2913: $domrolebuffer{$rudom}.=&escape($entry).
2914: '='.&escape($domainrolehash{$entry});
2915: }
2916: delete $domainrolehash{$entry};
2917: }
2918: foreach my $dom (keys(%domrolebuffer)) {
2919: my %servers = &get_servers($dom,'library');
2920: foreach my $tryserver (keys(%servers)) {
2921: unless (&reply('domroleput:'.$dom.':'.
2922: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2923: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2924: }
2925: }
2926: }
2927: $dumpcount++;
2928: }
2929:
2930: sub courselog {
2931: my $what=shift;
2932: $what=time.':'.$what;
2933: unless ($env{'request.course.id'}) { return ''; }
2934: $coursedombuf{$env{'request.course.id'}}=
2935: $env{'course.'.$env{'request.course.id'}.'.domain'};
2936: $coursenumbuf{$env{'request.course.id'}}=
2937: $env{'course.'.$env{'request.course.id'}.'.num'};
2938: $coursehombuf{$env{'request.course.id'}}=
2939: $env{'course.'.$env{'request.course.id'}.'.home'};
2940: $coursedescrbuf{$env{'request.course.id'}}=
2941: $env{'course.'.$env{'request.course.id'}.'.description'};
2942: $courseinstcodebuf{$env{'request.course.id'}}=
2943: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2944: $courseownerbuf{$env{'request.course.id'}}=
2945: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2946: $coursetypebuf{$env{'request.course.id'}}=
2947: $env{'course.'.$env{'request.course.id'}.'.type'};
2948: if (defined $courselogs{$env{'request.course.id'}}) {
2949: $courselogs{$env{'request.course.id'}}.='&'.$what;
2950: } else {
2951: $courselogs{$env{'request.course.id'}}.=$what;
2952: }
2953: if (length($courselogs{$env{'request.course.id'}})>4048) {
2954: &flushcourselogs();
2955: }
2956: }
2957:
2958: sub courseacclog {
2959: my $fnsymb=shift;
2960: unless ($env{'request.course.id'}) { return ''; }
2961: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2962: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2963: $what.=':POST';
2964: # FIXME: Probably ought to escape things....
2965: foreach my $key (keys(%env)) {
2966: if ($key=~/^form\.(.*)/) {
2967: my $formitem = $1;
2968: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
2969: $what.=':'.$formitem.'='.$env{$key};
2970: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
2971: $what.=':'.$formitem.'='.$env{$key};
2972: }
2973: }
2974: }
2975: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2976: # FIXME: We should not be depending on a form parameter that someone
2977: # editing lonsearchcat.pm might change in the future.
2978: if ($env{'form.phase'} eq 'course_search') {
2979: $what.= ':POST';
2980: # FIXME: Probably ought to escape things....
2981: foreach my $element ('courseexp','crsfulltext','crsrelated',
2982: 'crsdiscuss') {
2983: $what.=':'.$element.'='.$env{'form.'.$element};
2984: }
2985: }
2986: }
2987: &courselog($what);
2988: }
2989:
2990: sub countacc {
2991: my $url=&declutter(shift);
2992: return if (! defined($url) || $url eq '');
2993: unless ($env{'request.course.id'}) { return ''; }
2994: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2995: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2996: $accesshash{$key}++;
2997: }
2998:
2999: sub linklog {
3000: my ($from,$to)=@_;
3001: $from=&declutter($from);
3002: $to=&declutter($to);
3003: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3004: $accesshash{$to.'___'.$from.'___goto'}=1;
3005: }
3006:
3007: sub userrolelog {
3008: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3009: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
3010: ($trole=~/^in/) || ($trole=~/^cc/) ||
3011: ($trole=~/^ep/) || ($trole=~/^cr/) ||
3012: ($trole=~/^ta/) || ($trole=~/^co/)) {
3013: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3014: $userrolehash
3015: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3016: =$tend.':'.$tstart;
3017: }
3018: if (($env{'request.role'} =~ /dc\./) &&
3019: (($trole=~/^au/) || ($trole=~/^in/) ||
3020: ($trole=~/^cc/) || ($trole=~/^ep/) ||
3021: ($trole=~/^cr/) || ($trole=~/^ta/) ||
3022: ($trole=~/^co/))) {
3023: $userrolehash
3024: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3025: =$tend.':'.$tstart;
3026: }
3027: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
3028: ($trole=~/^li/) || ($trole=~/^li/) ||
3029: ($trole=~/^au/) || ($trole=~/^dg/) ||
3030: ($trole=~/^sc/)) {
3031: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3032: $domainrolehash
3033: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3034: = $tend.':'.$tstart;
3035: }
3036: }
3037:
3038: sub courserolelog {
3039: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3040: if (($trole eq 'cc') || ($trole eq 'in') ||
3041: ($trole eq 'ep') || ($trole eq 'ad') ||
3042: ($trole eq 'ta') || ($trole eq 'st') ||
3043: ($trole=~/^cr/) || ($trole eq 'gr') ||
3044: ($trole eq 'co')) {
3045: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3046: my $cdom = $1;
3047: my $cnum = $2;
3048: my $sec = $3;
3049: my $namespace = 'rolelog';
3050: my %storehash = (
3051: role => $trole,
3052: start => $tstart,
3053: end => $tend,
3054: selfenroll => $selfenroll,
3055: context => $context,
3056: );
3057: if ($trole eq 'gr') {
3058: $namespace = 'groupslog';
3059: $storehash{'group'} = $sec;
3060: } else {
3061: $storehash{'section'} = $sec;
3062: }
3063: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3064: if (($trole ne 'st') || ($sec ne '')) {
3065: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3066: }
3067: }
3068: }
3069: return;
3070: }
3071:
3072: sub get_course_adv_roles {
3073: my ($cid,$codes) = @_;
3074: $cid=$env{'request.course.id'} unless (defined($cid));
3075: my %coursehash=&coursedescription($cid);
3076: my $crstype = &Apache::loncommon::course_type($cid);
3077: my %nothide=();
3078: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3079: if ($user !~ /:/) {
3080: $nothide{join(':',split(/[\@]/,$user))}=1;
3081: } else {
3082: $nothide{$user}=1;
3083: }
3084: }
3085: my %returnhash=();
3086: my %dumphash=
3087: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3088: my $now=time;
3089: my %privileged;
3090: foreach my $entry (keys(%dumphash)) {
3091: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3092: if (($tstart) && ($tstart<0)) { next; }
3093: if (($tend) && ($tend<$now)) { next; }
3094: if (($tstart) && ($now<$tstart)) { next; }
3095: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3096: if ($username eq '' || $domain eq '') { next; }
3097: unless (ref($privileged{$domain}) eq 'HASH') {
3098: my %dompersonnel =
3099: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3100: $privileged{$domain} = {};
3101: foreach my $server (keys(%dompersonnel)) {
3102: if (ref($dompersonnel{$server}) eq 'HASH') {
3103: foreach my $user (keys(%{$dompersonnel{$server}})) {
3104: my ($trole,$uname,$udom) = split(/:/,$user);
3105: $privileged{$udom}{$uname} = 1;
3106: }
3107: }
3108: }
3109: }
3110: if ((exists($privileged{$domain}{$username})) &&
3111: (!$nothide{$username.':'.$domain})) { next; }
3112: if ($role eq 'cr') { next; }
3113: if ($codes) {
3114: if ($section) { $role .= ':'.$section; }
3115: if ($returnhash{$role}) {
3116: $returnhash{$role}.=','.$username.':'.$domain;
3117: } else {
3118: $returnhash{$role}=$username.':'.$domain;
3119: }
3120: } else {
3121: my $key=&plaintext($role,$crstype);
3122: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3123: if ($returnhash{$key}) {
3124: $returnhash{$key}.=','.$username.':'.$domain;
3125: } else {
3126: $returnhash{$key}=$username.':'.$domain;
3127: }
3128: }
3129: }
3130: return %returnhash;
3131: }
3132:
3133: sub get_my_roles {
3134: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3135: unless (defined($uname)) { $uname=$env{'user.name'}; }
3136: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3137: my (%dumphash,%nothide);
3138: if ($context eq 'userroles') {
3139: my $extra = &freeze_escape({'skipcheck' => 1});
3140: %dumphash = &dump('roles',$udom,$uname,'.',undef,$extra);
3141: } else {
3142: %dumphash=
3143: &dump('nohist_userroles',$udom,$uname);
3144: if ($hidepriv) {
3145: my %coursehash=&coursedescription($udom.'_'.$uname);
3146: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3147: if ($user !~ /:/) {
3148: $nothide{join(':',split(/[\@]/,$user))} = 1;
3149: } else {
3150: $nothide{$user} = 1;
3151: }
3152: }
3153: }
3154: }
3155: my %returnhash=();
3156: my $now=time;
3157: my %privileged;
3158: foreach my $entry (keys(%dumphash)) {
3159: my ($role,$tend,$tstart);
3160: if ($context eq 'userroles') {
3161: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3162: } else {
3163: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3164: }
3165: if (($tstart) && ($tstart<0)) { next; }
3166: my $status = 'active';
3167: if (($tend) && ($tend<=$now)) {
3168: $status = 'previous';
3169: }
3170: if (($tstart) && ($now<$tstart)) {
3171: $status = 'future';
3172: }
3173: if (ref($types) eq 'ARRAY') {
3174: if (!grep(/^\Q$status\E$/,@{$types})) {
3175: next;
3176: }
3177: } else {
3178: if ($status ne 'active') {
3179: next;
3180: }
3181: }
3182: my ($rolecode,$username,$domain,$section,$area);
3183: if ($context eq 'userroles') {
3184: ($area,$rolecode) = split(/_/,$entry);
3185: (undef,$domain,$username,$section) = split(/\//,$area);
3186: } else {
3187: ($role,$username,$domain,$section) = split(/\:/,$entry);
3188: }
3189: if (ref($roledoms) eq 'ARRAY') {
3190: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3191: next;
3192: }
3193: }
3194: if (ref($roles) eq 'ARRAY') {
3195: if (!grep(/^\Q$role\E$/,@{$roles})) {
3196: if ($role =~ /^cr\//) {
3197: if (!grep(/^cr$/,@{$roles})) {
3198: next;
3199: }
3200: } elsif ($role =~ /^gr\//) {
3201: if (!grep(/^gr$/,@{$roles})) {
3202: next;
3203: }
3204: } else {
3205: next;
3206: }
3207: }
3208: }
3209: if ($hidepriv) {
3210: if ($context eq 'userroles') {
3211: if ((&privileged($username,$domain)) &&
3212: (!$nothide{$username.':'.$domain})) {
3213: next;
3214: }
3215: } else {
3216: unless (ref($privileged{$domain}) eq 'HASH') {
3217: my %dompersonnel =
3218: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3219: $privileged{$domain} = {};
3220: if (keys(%dompersonnel)) {
3221: foreach my $server (keys(%dompersonnel)) {
3222: if (ref($dompersonnel{$server}) eq 'HASH') {
3223: foreach my $user (keys(%{$dompersonnel{$server}})) {
3224: my ($trole,$uname,$udom) = split(/:/,$user);
3225: $privileged{$udom}{$uname} = $trole;
3226: }
3227: }
3228: }
3229: }
3230: }
3231: if (exists($privileged{$domain}{$username})) {
3232: if (!$nothide{$username.':'.$domain}) {
3233: next;
3234: }
3235: }
3236: }
3237: }
3238: if ($withsec) {
3239: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3240: $tstart.':'.$tend;
3241: } else {
3242: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3243: }
3244: }
3245: return %returnhash;
3246: }
3247:
3248: # ----------------------------------------------------- Frontpage Announcements
3249: #
3250: #
3251:
3252: sub postannounce {
3253: my ($server,$text)=@_;
3254: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3255: unless ($text=~/\w/) { $text=''; }
3256: return &reply('setannounce:'.&escape($text),$server);
3257: }
3258:
3259: sub getannounce {
3260:
3261: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3262: my $announcement='';
3263: while (my $line = <$fh>) { $announcement .= $line; }
3264: close($fh);
3265: if ($announcement=~/\w/) {
3266: return
3267: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3268: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3269: } else {
3270: return '';
3271: }
3272: } else {
3273: return '';
3274: }
3275: }
3276:
3277: # ---------------------------------------------------------- Course ID routines
3278: # Deal with domain's nohist_courseid.db files
3279: #
3280:
3281: sub courseidput {
3282: my ($domain,$storehash,$coursehome,$caller) = @_;
3283: return unless (ref($storehash) eq 'HASH');
3284: my $outcome;
3285: if ($caller eq 'timeonly') {
3286: my $cids = '';
3287: foreach my $item (keys(%$storehash)) {
3288: $cids.=&escape($item).'&';
3289: }
3290: $cids=~s/\&$//;
3291: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3292: $coursehome);
3293: } else {
3294: my $items = '';
3295: foreach my $item (keys(%$storehash)) {
3296: $items.= &escape($item).'='.
3297: &freeze_escape($$storehash{$item}).'&';
3298: }
3299: $items=~s/\&$//;
3300: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3301: $coursehome);
3302: }
3303: if ($outcome eq 'unknown_cmd') {
3304: my $what;
3305: foreach my $cid (keys(%$storehash)) {
3306: $what .= &escape($cid).'=';
3307: foreach my $item ('description','inst_code','owner','type') {
3308: $what .= &escape($storehash->{$cid}{$item}).':';
3309: }
3310: $what =~ s/\:$/&/;
3311: }
3312: $what =~ s/\&$//;
3313: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3314: } else {
3315: return $outcome;
3316: }
3317: }
3318:
3319: sub courseiddump {
3320: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3321: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3322: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3323: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3324: my $as_hash = 1;
3325: my %returnhash;
3326: if (!$domfilter) { $domfilter=''; }
3327: my %libserv = &all_library();
3328: foreach my $tryserver (keys(%libserv)) {
3329: if ( ( $hostidflag == 1
3330: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3331: || (!defined($hostidflag)) ) {
3332:
3333: if (($domfilter eq '') ||
3334: (&host_domain($tryserver) eq $domfilter)) {
3335: my $rep =
3336: &reply('courseiddump:'.&host_domain($tryserver).':'.
3337: $sincefilter.':'.&escape($descfilter).':'.
3338: &escape($instcodefilter).':'.&escape($ownerfilter).
3339: ':'.&escape($coursefilter).':'.&escape($typefilter).
3340: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3341: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3342: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3343: &escape($cc_clone).':'.$cloneonly.':'.
3344: &escape($createdbefore).':'.&escape($createdafter).':'.
3345: &escape($creationcontext).':'.$domcloner,
3346: $tryserver);
3347: my @pairs=split(/\&/,$rep);
3348: foreach my $item (@pairs) {
3349: my ($key,$value)=split(/\=/,$item,2);
3350: $key = &unescape($key);
3351: next if ($key =~ /^error: 2 /);
3352: my $result = &thaw_unescape($value);
3353: if (ref($result) eq 'HASH') {
3354: $returnhash{$key}=$result;
3355: } else {
3356: my @responses = split(/:/,$value);
3357: my @items = ('description','inst_code','owner','type');
3358: for (my $i=0; $i<@responses; $i++) {
3359: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3360: }
3361: }
3362: }
3363: }
3364: }
3365: }
3366: return %returnhash;
3367: }
3368:
3369: sub courselastaccess {
3370: my ($cdom,$cnum,$hostidref) = @_;
3371: my %returnhash;
3372: if ($cdom && $cnum) {
3373: my $chome = &homeserver($cnum,$cdom);
3374: if ($chome ne 'no_host') {
3375: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3376: &extract_lastaccess(\%returnhash,$rep);
3377: }
3378: } else {
3379: if (!$cdom) { $cdom=''; }
3380: my %libserv = &all_library();
3381: foreach my $tryserver (keys(%libserv)) {
3382: if (ref($hostidref) eq 'ARRAY') {
3383: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3384: }
3385: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3386: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3387: &extract_lastaccess(\%returnhash,$rep);
3388: }
3389: }
3390: }
3391: return %returnhash;
3392: }
3393:
3394: sub extract_lastaccess {
3395: my ($returnhash,$rep) = @_;
3396: if (ref($returnhash) eq 'HASH') {
3397: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3398: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3399: $rep eq '') {
3400: my @pairs=split(/\&/,$rep);
3401: foreach my $item (@pairs) {
3402: my ($key,$value)=split(/\=/,$item,2);
3403: $key = &unescape($key);
3404: next if ($key =~ /^error: 2 /);
3405: $returnhash->{$key} = &thaw_unescape($value);
3406: }
3407: }
3408: }
3409: return;
3410: }
3411:
3412: # ---------------------------------------------------------- DC e-mail
3413:
3414: sub dcmailput {
3415: my ($domain,$msgid,$message,$server)=@_;
3416: my $status = &Apache::lonnet::critical(
3417: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3418: &escape($message),$server);
3419: return $status;
3420: }
3421:
3422: sub dcmaildump {
3423: my ($dom,$startdate,$enddate,$senders) = @_;
3424: my %returnhash=();
3425:
3426: if (defined(&domain($dom,'primary'))) {
3427: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3428: &escape($enddate).':';
3429: my @esc_senders=map { &escape($_)} @$senders;
3430: $cmd.=&escape(join('&',@esc_senders));
3431: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3432: my ($key,$value) = split(/\=/,$line,2);
3433: if (($key) && ($value)) {
3434: $returnhash{&unescape($key)} = &unescape($value);
3435: }
3436: }
3437: }
3438: return %returnhash;
3439: }
3440: # ---------------------------------------------------------- Domain roles
3441:
3442: sub get_domain_roles {
3443: my ($dom,$roles,$startdate,$enddate)=@_;
3444: if ((!defined($startdate)) || ($startdate eq '')) {
3445: $startdate = '.';
3446: }
3447: if ((!defined($enddate)) || ($enddate eq '')) {
3448: $enddate = '.';
3449: }
3450: my $rolelist;
3451: if (ref($roles) eq 'ARRAY') {
3452: $rolelist = join(':',@{$roles});
3453: }
3454: my %personnel = ();
3455:
3456: my %servers = &get_servers($dom,'library');
3457: foreach my $tryserver (keys(%servers)) {
3458: %{$personnel{$tryserver}}=();
3459: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3460: &escape($startdate).':'.
3461: &escape($enddate).':'.
3462: &escape($rolelist), $tryserver))) {
3463: my ($key,$value) = split(/\=/,$line,2);
3464: if (($key) && ($value)) {
3465: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3466: }
3467: }
3468: }
3469: return %personnel;
3470: }
3471:
3472: # ----------------------------------------------------------- Interval timing
3473:
3474: sub get_first_access {
3475: my ($type,$argsymb)=@_;
3476: my ($symb,$courseid,$udom,$uname)=&whichuser();
3477: if ($argsymb) { $symb=$argsymb; }
3478: my ($map,$id,$res)=&decode_symb($symb);
3479: if ($type eq 'course') {
3480: $res='course';
3481: } elsif ($type eq 'map') {
3482: $res=&symbread($map);
3483: } else {
3484: $res=$symb;
3485: }
3486: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
3487: return $times{"$courseid\0$res"};
3488: }
3489:
3490: sub set_first_access {
3491: my ($type)=@_;
3492: my ($symb,$courseid,$udom,$uname)=&whichuser();
3493: my ($map,$id,$res)=&decode_symb($symb);
3494: if ($type eq 'course') {
3495: $res='course';
3496: } elsif ($type eq 'map') {
3497: $res=&symbread($map);
3498: } else {
3499: $res=$symb;
3500: }
3501: my $firstaccess=&get_first_access($type,$symb);
3502: if (!$firstaccess) {
3503: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
3504: }
3505: return 'already_set';
3506: }
3507:
3508: # --------------------------------------------- Set Expire Date for Spreadsheet
3509:
3510: sub expirespread {
3511: my ($uname,$udom,$stype,$usymb)=@_;
3512: my $cid=$env{'request.course.id'};
3513: if ($cid) {
3514: my $now=time;
3515: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3516: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3517: $env{'course.'.$cid.'.num'}.
3518: ':nohist_expirationdates:'.
3519: &escape($key).'='.$now,
3520: $env{'course.'.$cid.'.home'})
3521: }
3522: return 'ok';
3523: }
3524:
3525: # ----------------------------------------------------- Devalidate Spreadsheets
3526:
3527: sub devalidate {
3528: my ($symb,$uname,$udom)=@_;
3529: my $cid=$env{'request.course.id'};
3530: if ($cid) {
3531: # delete the stored spreadsheets for
3532: # - the student level sheet of this user in course's homespace
3533: # - the assessment level sheet for this resource
3534: # for this user in user's homespace
3535: # - current conditional state info
3536: my $key=$uname.':'.$udom.':';
3537: my $status=
3538: &del('nohist_calculatedsheets',
3539: [$key.'studentcalc:'],
3540: $env{'course.'.$cid.'.domain'},
3541: $env{'course.'.$cid.'.num'})
3542: .' '.
3543: &del('nohist_calculatedsheets_'.$cid,
3544: [$key.'assesscalc:'.$symb],$udom,$uname);
3545: unless ($status eq 'ok ok') {
3546: &logthis('Could not devalidate spreadsheet '.
3547: $uname.' at '.$udom.' for '.
3548: $symb.': '.$status);
3549: }
3550: &delenv('user.state.'.$cid);
3551: }
3552: }
3553:
3554: sub get_scalar {
3555: my ($string,$end) = @_;
3556: my $value;
3557: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3558: $value = $1;
3559: } elsif ($$string =~ s/^([^&]*?)&//) {
3560: $value = $1;
3561: }
3562: return &unescape($value);
3563: }
3564:
3565: sub array2str {
3566: my (@array) = @_;
3567: my $result=&arrayref2str(\@array);
3568: $result=~s/^__ARRAY_REF__//;
3569: $result=~s/__END_ARRAY_REF__$//;
3570: return $result;
3571: }
3572:
3573: sub arrayref2str {
3574: my ($arrayref) = @_;
3575: my $result='__ARRAY_REF__';
3576: foreach my $elem (@$arrayref) {
3577: if(ref($elem) eq 'ARRAY') {
3578: $result.=&arrayref2str($elem).'&';
3579: } elsif(ref($elem) eq 'HASH') {
3580: $result.=&hashref2str($elem).'&';
3581: } elsif(ref($elem)) {
3582: #print("Got a ref of ".(ref($elem))." skipping.");
3583: } else {
3584: $result.=&escape($elem).'&';
3585: }
3586: }
3587: $result=~s/\&$//;
3588: $result .= '__END_ARRAY_REF__';
3589: return $result;
3590: }
3591:
3592: sub hash2str {
3593: my (%hash) = @_;
3594: my $result=&hashref2str(\%hash);
3595: $result=~s/^__HASH_REF__//;
3596: $result=~s/__END_HASH_REF__$//;
3597: return $result;
3598: }
3599:
3600: sub hashref2str {
3601: my ($hashref)=@_;
3602: my $result='__HASH_REF__';
3603: foreach my $key (sort(keys(%$hashref))) {
3604: if (ref($key) eq 'ARRAY') {
3605: $result.=&arrayref2str($key).'=';
3606: } elsif (ref($key) eq 'HASH') {
3607: $result.=&hashref2str($key).'=';
3608: } elsif (ref($key)) {
3609: $result.='=';
3610: #print("Got a ref of ".(ref($key))." skipping.");
3611: } else {
3612: if ($key) {$result.=&escape($key).'=';} else { last; }
3613: }
3614:
3615: if(ref($hashref->{$key}) eq 'ARRAY') {
3616: $result.=&arrayref2str($hashref->{$key}).'&';
3617: } elsif(ref($hashref->{$key}) eq 'HASH') {
3618: $result.=&hashref2str($hashref->{$key}).'&';
3619: } elsif(ref($hashref->{$key})) {
3620: $result.='&';
3621: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3622: } else {
3623: $result.=&escape($hashref->{$key}).'&';
3624: }
3625: }
3626: $result=~s/\&$//;
3627: $result .= '__END_HASH_REF__';
3628: return $result;
3629: }
3630:
3631: sub str2hash {
3632: my ($string)=@_;
3633: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3634: return %$hash;
3635: }
3636:
3637: sub str2hashref {
3638: my ($string) = @_;
3639:
3640: my %hash;
3641:
3642: if($string !~ /^__HASH_REF__/) {
3643: if (! ($string eq '' || !defined($string))) {
3644: $hash{'error'}='Not hash reference';
3645: }
3646: return (\%hash, $string);
3647: }
3648:
3649: $string =~ s/^__HASH_REF__//;
3650:
3651: while($string !~ /^__END_HASH_REF__/) {
3652: #key
3653: my $key='';
3654: if($string =~ /^__HASH_REF__/) {
3655: ($key, $string)=&str2hashref($string);
3656: if(defined($key->{'error'})) {
3657: $hash{'error'}='Bad data';
3658: return (\%hash, $string);
3659: }
3660: } elsif($string =~ /^__ARRAY_REF__/) {
3661: ($key, $string)=&str2arrayref($string);
3662: if($key->[0] eq 'Array reference error') {
3663: $hash{'error'}='Bad data';
3664: return (\%hash, $string);
3665: }
3666: } else {
3667: $string =~ s/^(.*?)=//;
3668: $key=&unescape($1);
3669: }
3670: $string =~ s/^=//;
3671:
3672: #value
3673: my $value='';
3674: if($string =~ /^__HASH_REF__/) {
3675: ($value, $string)=&str2hashref($string);
3676: if(defined($value->{'error'})) {
3677: $hash{'error'}='Bad data';
3678: return (\%hash, $string);
3679: }
3680: } elsif($string =~ /^__ARRAY_REF__/) {
3681: ($value, $string)=&str2arrayref($string);
3682: if($value->[0] eq 'Array reference error') {
3683: $hash{'error'}='Bad data';
3684: return (\%hash, $string);
3685: }
3686: } else {
3687: $value=&get_scalar(\$string,'__END_HASH_REF__');
3688: }
3689: $string =~ s/^&//;
3690:
3691: $hash{$key}=$value;
3692: }
3693:
3694: $string =~ s/^__END_HASH_REF__//;
3695:
3696: return (\%hash, $string);
3697: }
3698:
3699: sub str2array {
3700: my ($string)=@_;
3701: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3702: return @$array;
3703: }
3704:
3705: sub str2arrayref {
3706: my ($string) = @_;
3707: my @array;
3708:
3709: if($string !~ /^__ARRAY_REF__/) {
3710: if (! ($string eq '' || !defined($string))) {
3711: $array[0]='Array reference error';
3712: }
3713: return (\@array, $string);
3714: }
3715:
3716: $string =~ s/^__ARRAY_REF__//;
3717:
3718: while($string !~ /^__END_ARRAY_REF__/) {
3719: my $value='';
3720: if($string =~ /^__HASH_REF__/) {
3721: ($value, $string)=&str2hashref($string);
3722: if(defined($value->{'error'})) {
3723: $array[0] ='Array reference error';
3724: return (\@array, $string);
3725: }
3726: } elsif($string =~ /^__ARRAY_REF__/) {
3727: ($value, $string)=&str2arrayref($string);
3728: if($value->[0] eq 'Array reference error') {
3729: $array[0] ='Array reference error';
3730: return (\@array, $string);
3731: }
3732: } else {
3733: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3734: }
3735: $string =~ s/^&//;
3736:
3737: push(@array, $value);
3738: }
3739:
3740: $string =~ s/^__END_ARRAY_REF__//;
3741:
3742: return (\@array, $string);
3743: }
3744:
3745: # -------------------------------------------------------------------Temp Store
3746:
3747: sub tmpreset {
3748: my ($symb,$namespace,$domain,$stuname) = @_;
3749: if (!$symb) {
3750: $symb=&symbread();
3751: if (!$symb) { $symb= $env{'request.url'}; }
3752: }
3753: $symb=escape($symb);
3754:
3755: if (!$namespace) { $namespace=$env{'request.state'}; }
3756: $namespace=~s/\//\_/g;
3757: $namespace=~s/\W//g;
3758:
3759: if (!$domain) { $domain=$env{'user.domain'}; }
3760: if (!$stuname) { $stuname=$env{'user.name'}; }
3761: if ($domain eq 'public' && $stuname eq 'public') {
3762: $stuname=$ENV{'REMOTE_ADDR'};
3763: }
3764: my $path=$perlvar{'lonDaemons'}.'/tmp';
3765: my %hash;
3766: if (tie(%hash,'GDBM_File',
3767: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3768: &GDBM_WRCREAT(),0640)) {
3769: foreach my $key (keys(%hash)) {
3770: if ($key=~ /:$symb/) {
3771: delete($hash{$key});
3772: }
3773: }
3774: }
3775: }
3776:
3777: sub tmpstore {
3778: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3779:
3780: if (!$symb) {
3781: $symb=&symbread();
3782: if (!$symb) { $symb= $env{'request.url'}; }
3783: }
3784: $symb=escape($symb);
3785:
3786: if (!$namespace) {
3787: # I don't think we would ever want to store this for a course.
3788: # it seems this will only be used if we don't have a course.
3789: #$namespace=$env{'request.course.id'};
3790: #if (!$namespace) {
3791: $namespace=$env{'request.state'};
3792: #}
3793: }
3794: $namespace=~s/\//\_/g;
3795: $namespace=~s/\W//g;
3796: if (!$domain) { $domain=$env{'user.domain'}; }
3797: if (!$stuname) { $stuname=$env{'user.name'}; }
3798: if ($domain eq 'public' && $stuname eq 'public') {
3799: $stuname=$ENV{'REMOTE_ADDR'};
3800: }
3801: my $now=time;
3802: my %hash;
3803: my $path=$perlvar{'lonDaemons'}.'/tmp';
3804: if (tie(%hash,'GDBM_File',
3805: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3806: &GDBM_WRCREAT(),0640)) {
3807: $hash{"version:$symb"}++;
3808: my $version=$hash{"version:$symb"};
3809: my $allkeys='';
3810: foreach my $key (keys(%$storehash)) {
3811: $allkeys.=$key.':';
3812: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3813: }
3814: $hash{"$version:$symb:timestamp"}=$now;
3815: $allkeys.='timestamp';
3816: $hash{"$version:keys:$symb"}=$allkeys;
3817: if (untie(%hash)) {
3818: return 'ok';
3819: } else {
3820: return "error:$!";
3821: }
3822: } else {
3823: return "error:$!";
3824: }
3825: }
3826:
3827: # -----------------------------------------------------------------Temp Restore
3828:
3829: sub tmprestore {
3830: my ($symb,$namespace,$domain,$stuname) = @_;
3831:
3832: if (!$symb) {
3833: $symb=&symbread();
3834: if (!$symb) { $symb= $env{'request.url'}; }
3835: }
3836: $symb=escape($symb);
3837:
3838: if (!$namespace) { $namespace=$env{'request.state'}; }
3839:
3840: if (!$domain) { $domain=$env{'user.domain'}; }
3841: if (!$stuname) { $stuname=$env{'user.name'}; }
3842: if ($domain eq 'public' && $stuname eq 'public') {
3843: $stuname=$ENV{'REMOTE_ADDR'};
3844: }
3845: my %returnhash;
3846: $namespace=~s/\//\_/g;
3847: $namespace=~s/\W//g;
3848: my %hash;
3849: my $path=$perlvar{'lonDaemons'}.'/tmp';
3850: if (tie(%hash,'GDBM_File',
3851: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3852: &GDBM_READER(),0640)) {
3853: my $version=$hash{"version:$symb"};
3854: $returnhash{'version'}=$version;
3855: my $scope;
3856: for ($scope=1;$scope<=$version;$scope++) {
3857: my $vkeys=$hash{"$scope:keys:$symb"};
3858: my @keys=split(/:/,$vkeys);
3859: my $key;
3860: $returnhash{"$scope:keys"}=$vkeys;
3861: foreach $key (@keys) {
3862: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3863: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3864: }
3865: }
3866: if (!(untie(%hash))) {
3867: return "error:$!";
3868: }
3869: } else {
3870: return "error:$!";
3871: }
3872: return %returnhash;
3873: }
3874:
3875: # ----------------------------------------------------------------------- Store
3876:
3877: sub store {
3878: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3879: my $home='';
3880:
3881: if ($stuname) { $home=&homeserver($stuname,$domain); }
3882:
3883: $symb=&symbclean($symb);
3884: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3885:
3886: if (!$domain) { $domain=$env{'user.domain'}; }
3887: if (!$stuname) { $stuname=$env{'user.name'}; }
3888:
3889: &devalidate($symb,$stuname,$domain);
3890:
3891: $symb=escape($symb);
3892: if (!$namespace) {
3893: unless ($namespace=$env{'request.course.id'}) {
3894: return '';
3895: }
3896: }
3897: if (!$home) { $home=$env{'user.home'}; }
3898:
3899: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3900: $$storehash{'host'}=$perlvar{'lonHostID'};
3901:
3902: my $namevalue='';
3903: foreach my $key (keys(%$storehash)) {
3904: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3905: }
3906: $namevalue=~s/\&$//;
3907: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3908: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3909: }
3910:
3911: # -------------------------------------------------------------- Critical Store
3912:
3913: sub cstore {
3914: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3915: my $home='';
3916:
3917: if ($stuname) { $home=&homeserver($stuname,$domain); }
3918:
3919: $symb=&symbclean($symb);
3920: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3921:
3922: if (!$domain) { $domain=$env{'user.domain'}; }
3923: if (!$stuname) { $stuname=$env{'user.name'}; }
3924:
3925: &devalidate($symb,$stuname,$domain);
3926:
3927: $symb=escape($symb);
3928: if (!$namespace) {
3929: unless ($namespace=$env{'request.course.id'}) {
3930: return '';
3931: }
3932: }
3933: if (!$home) { $home=$env{'user.home'}; }
3934:
3935: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3936: $$storehash{'host'}=$perlvar{'lonHostID'};
3937:
3938: my $namevalue='';
3939: foreach my $key (keys(%$storehash)) {
3940: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3941: }
3942: $namevalue=~s/\&$//;
3943: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3944: return critical
3945: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3946: }
3947:
3948: # --------------------------------------------------------------------- Restore
3949:
3950: sub restore {
3951: my ($symb,$namespace,$domain,$stuname) = @_;
3952: my $home='';
3953:
3954: if ($stuname) { $home=&homeserver($stuname,$domain); }
3955:
3956: if (!$symb) {
3957: unless ($symb=escape(&symbread())) { return ''; }
3958: } else {
3959: $symb=&escape(&symbclean($symb));
3960: }
3961: if (!$namespace) {
3962: unless ($namespace=$env{'request.course.id'}) {
3963: return '';
3964: }
3965: }
3966: if (!$domain) { $domain=$env{'user.domain'}; }
3967: if (!$stuname) { $stuname=$env{'user.name'}; }
3968: if (!$home) { $home=$env{'user.home'}; }
3969: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3970:
3971: my %returnhash=();
3972: foreach my $line (split(/\&/,$answer)) {
3973: my ($name,$value)=split(/\=/,$line);
3974: $returnhash{&unescape($name)}=&thaw_unescape($value);
3975: }
3976: my $version;
3977: for ($version=1;$version<=$returnhash{'version'};$version++) {
3978: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3979: $returnhash{$item}=$returnhash{$version.':'.$item};
3980: }
3981: }
3982: return %returnhash;
3983: }
3984:
3985: # ---------------------------------------------------------- Course Description
3986:
3987: sub coursedescription {
3988: my ($courseid,$args)=@_;
3989: $courseid=~s/^\///;
3990: $courseid=~s/\_/\//g;
3991: my ($cdomain,$cnum)=split(/\//,$courseid);
3992: my $chome=&homeserver($cnum,$cdomain);
3993: my $normalid=$cdomain.'_'.$cnum;
3994: # need to always cache even if we get errors otherwise we keep
3995: # trying and trying and trying to get the course description.
3996: my %envhash=();
3997: my %returnhash=();
3998:
3999: my $expiretime=600;
4000: if ($env{'request.course.id'} eq $normalid) {
4001: $expiretime=120;
4002: }
4003:
4004: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4005: if (!$args->{'freshen_cache'}
4006: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4007: foreach my $key (keys(%env)) {
4008: next if ($key !~ /^\Q$prefix\E(.*)/);
4009: my ($setting) = $1;
4010: $returnhash{$setting} = $env{$key};
4011: }
4012: return %returnhash;
4013: }
4014:
4015: # get the data agin
4016: if (!$args->{'one_time'}) {
4017: $envhash{'course.'.$normalid.'.last_cache'}=time;
4018: }
4019:
4020: if ($chome ne 'no_host') {
4021: %returnhash=&dump('environment',$cdomain,$cnum);
4022: if (!exists($returnhash{'con_lost'})) {
4023: $returnhash{'home'}= $chome;
4024: $returnhash{'domain'} = $cdomain;
4025: $returnhash{'num'} = $cnum;
4026: if (!defined($returnhash{'type'})) {
4027: $returnhash{'type'} = 'Course';
4028: }
4029: while (my ($name,$value) = each %returnhash) {
4030: $envhash{'course.'.$normalid.'.'.$name}=$value;
4031: }
4032: $returnhash{'url'}=&clutter($returnhash{'url'});
4033: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
4034: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
4035: $envhash{'course.'.$normalid.'.home'}=$chome;
4036: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4037: $envhash{'course.'.$normalid.'.num'}=$cnum;
4038: }
4039: }
4040: if (!$args->{'one_time'}) {
4041: &appenv(\%envhash);
4042: }
4043: return %returnhash;
4044: }
4045:
4046: sub update_released_required {
4047: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4048: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4049: $cid = $env{'request.course.id'};
4050: $cdom = $env{'course.'.$cid.'.domain'};
4051: $cnum = $env{'course.'.$cid.'.num'};
4052: $chome = $env{'course.'.$cid.'.home'};
4053: }
4054: if ($needsrelease) {
4055: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4056: my $needsupdate;
4057: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4058: $needsupdate = 1;
4059: } else {
4060: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4061: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4062: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4063: $needsupdate = 1;
4064: }
4065: }
4066: if ($needsupdate) {
4067: my %needshash = (
4068: 'internal.releaserequired' => $needsrelease,
4069: );
4070: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4071: if ($putresult eq 'ok') {
4072: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4073: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4074: if (ref($crsinfo{$cid}) eq 'HASH') {
4075: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4076: &courseidput($cdom,\%crsinfo,$chome,'notime');
4077: }
4078: }
4079: }
4080: }
4081: return;
4082: }
4083:
4084: # -------------------------------------------------See if a user is privileged
4085:
4086: sub privileged {
4087: my ($username,$domain)=@_;
4088: my $rolesdump=&reply("dump:$domain:$username:roles",
4089: &homeserver($username,$domain));
4090: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4091: ($rolesdump =~ /^error:/)) {
4092: return 0;
4093: }
4094: my $now=time;
4095: if ($rolesdump ne '') {
4096: foreach my $entry (split(/&/,$rolesdump)) {
4097: if ($entry!~/^rolesdef_/) {
4098: my ($area,$role)=split(/=/,$entry);
4099: $area=~s/\_\w\w$//;
4100: my ($trole,$tend,$tstart)=split(/_/,$role);
4101: if (($trole eq 'dc') || ($trole eq 'su')) {
4102: my $active=1;
4103: if ($tend) {
4104: if ($tend<$now) { $active=0; }
4105: }
4106: if ($tstart) {
4107: if ($tstart>$now) { $active=0; }
4108: }
4109: if ($active) { return 1; }
4110: }
4111: }
4112: }
4113: }
4114: return 0;
4115: }
4116:
4117: # -------------------------------------------------------- Get user privileges
4118:
4119: sub rolesinit {
4120: my ($domain,$username,$authhost)=@_;
4121: my $now=time;
4122: my %userroles = ('user.login.time' => $now);
4123: my $extra = &freeze_escape({'skipcheck' => 1});
4124: my $rolesdump=reply("dump:$domain:$username:roles:.::$extra",$authhost);
4125: if (($rolesdump eq 'con_lost') || ($rolesdump eq '') ||
4126: ($rolesdump =~ /^error:/)) {
4127: return \%userroles;
4128: }
4129: my %allroles=();
4130: my %allgroups=();
4131:
4132: if ($rolesdump ne '') {
4133: foreach my $entry (split(/&/,$rolesdump)) {
4134: if ($entry!~/^rolesdef_/) {
4135: my ($area,$role)=split(/=/,$entry);
4136: $area=~s/\_\w\w$//;
4137: my ($trole,$tend,$tstart,$group_privs);
4138: if ($role=~/^cr/) {
4139: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4140: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
4141: ($tend,$tstart)=split('_',$trest);
4142: } else {
4143: $trole=$role;
4144: }
4145: } elsif ($role =~ m|^gr/|) {
4146: ($trole,$tend,$tstart) = split(/_/,$role);
4147: next if ($tstart eq '-1');
4148: ($trole,$group_privs) = split(/\//,$trole);
4149: $group_privs = &unescape($group_privs);
4150: } else {
4151: ($trole,$tend,$tstart)=split(/_/,$role);
4152: }
4153: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4154: $username);
4155: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4156: if (($tend!=0) && ($tend<$now)) { $trole=''; }
4157: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
4158: if (($area ne '') && ($trole ne '')) {
4159: my $spec=$trole.'.'.$area;
4160: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
4161: if ($trole =~ /^cr\//) {
4162: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4163: } elsif ($trole eq 'gr') {
4164: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4165: } else {
4166: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4167: }
4168: }
4169: }
4170: }
4171: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
4172: $userroles{'user.adv'} = $adv;
4173: $userroles{'user.author'} = $author;
4174: $env{'user.adv'}=$adv;
4175: }
4176: return \%userroles;
4177: }
4178:
4179: sub set_arearole {
4180: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4181: # log the associated role with the area
4182: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4183: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4184: }
4185:
4186: sub custom_roleprivs {
4187: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4188: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4189: my $homsvr=homeserver($rauthor,$rdomain);
4190: if (&hostname($homsvr) ne '') {
4191: my ($rdummy,$roledef)=
4192: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4193: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4194: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4195: if (defined($syspriv)) {
4196: if ($trest =~ /^$match_community$/) {
4197: $syspriv =~ s/bre\&S//;
4198: }
4199: $$allroles{'cm./'}.=':'.$syspriv;
4200: $$allroles{$spec.'./'}.=':'.$syspriv;
4201: }
4202: if ($tdomain ne '') {
4203: if (defined($dompriv)) {
4204: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4205: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4206: }
4207: if (($trest ne '') && (defined($coursepriv))) {
4208: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4209: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4210: }
4211: }
4212: }
4213: }
4214: }
4215:
4216: sub group_roleprivs {
4217: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4218: my $access = 1;
4219: my $now = time;
4220: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4221: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4222: if ($access) {
4223: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4224: $$allgroups{$course}{$group} .=':'.$group_privs;
4225: }
4226: }
4227:
4228: sub standard_roleprivs {
4229: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4230: if (defined($pr{$trole.':s'})) {
4231: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4232: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4233: }
4234: if ($tdomain ne '') {
4235: if (defined($pr{$trole.':d'})) {
4236: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4237: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4238: }
4239: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4240: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4241: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4242: }
4243: }
4244: }
4245:
4246: sub set_userprivs {
4247: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4248: my $author=0;
4249: my $adv=0;
4250: my %grouproles = ();
4251: if (keys(%{$allgroups}) > 0) {
4252: my @groupkeys;
4253: foreach my $role (keys(%{$allroles})) {
4254: push(@groupkeys,$role);
4255: }
4256: if (ref($groups_roles) eq 'HASH') {
4257: foreach my $key (keys(%{$groups_roles})) {
4258: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4259: push(@groupkeys,$key);
4260: }
4261: }
4262: }
4263: if (@groupkeys > 0) {
4264: foreach my $role (@groupkeys) {
4265: my ($trole,$area,$sec,$extendedarea);
4266: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4267: $trole = $1;
4268: $area = $2;
4269: $sec = $3;
4270: $extendedarea = $area.$sec;
4271: if (exists($$allgroups{$area})) {
4272: foreach my $group (keys(%{$$allgroups{$area}})) {
4273: my $spec = $trole.'.'.$extendedarea;
4274: $grouproles{$spec.'.'.$area.'/'.$group} =
4275: $$allgroups{$area}{$group};
4276: }
4277: }
4278: }
4279: }
4280: }
4281: }
4282: foreach my $group (keys(%grouproles)) {
4283: $$allroles{$group} = $grouproles{$group};
4284: }
4285: foreach my $role (keys(%{$allroles})) {
4286: my %thesepriv;
4287: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4288: foreach my $item (split(/:/,$$allroles{$role})) {
4289: if ($item ne '') {
4290: my ($privilege,$restrictions)=split(/&/,$item);
4291: if ($restrictions eq '') {
4292: $thesepriv{$privilege}='F';
4293: } elsif ($thesepriv{$privilege} ne 'F') {
4294: $thesepriv{$privilege}.=$restrictions;
4295: }
4296: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4297: }
4298: }
4299: my $thesestr='';
4300: foreach my $priv (sort(keys(%thesepriv))) {
4301: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4302: }
4303: $userroles->{'user.priv.'.$role} = $thesestr;
4304: }
4305: return ($author,$adv);
4306: }
4307:
4308: sub role_status {
4309: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4310: my @pwhere = ();
4311: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4312: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4313: unless (!defined($$role) || $$role eq '') {
4314: $$where=join('.',@pwhere);
4315: $$trolecode=$$role.'.'.$$where;
4316: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4317: $$tstatus='is';
4318: if ($$tstart && $$tstart>$update) {
4319: $$tstatus='future';
4320: if ($$tstart<$now) {
4321: if ($$tstart && $$tstart>$refresh) {
4322: if (($$where ne '') && ($$role ne '')) {
4323: my (%allroles,%allgroups,$group_privs,
4324: %groups_roles,@rolecodes);
4325: my %userroles = (
4326: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4327: );
4328: @rolecodes = ('cm');
4329: my $spec=$$role.'.'.$$where;
4330: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4331: if ($$role =~ /^cr\//) {
4332: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4333: push(@rolecodes,'cr');
4334: } elsif ($$role eq 'gr') {
4335: push(@rolecodes,$$role);
4336: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4337: $env{'user.name'});
4338: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4339: (undef,my $group_privs) = split(/\//,$trole);
4340: $group_privs = &unescape($group_privs);
4341: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4342: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4343: &get_groups_roles($tdomain,$trest,
4344: \%course_roles,\@rolecodes,
4345: \%groups_roles);
4346: } else {
4347: push(@rolecodes,$$role);
4348: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4349: }
4350: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4351: &appenv(\%userroles,\@rolecodes);
4352: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4353: }
4354: }
4355: $$tstatus = 'is';
4356: }
4357: }
4358: if ($$tend) {
4359: if ($$tend<$update) {
4360: $$tstatus='expired';
4361: } elsif ($$tend<$now) {
4362: $$tstatus='will_not';
4363: }
4364: }
4365: }
4366: }
4367: }
4368:
4369: sub get_groups_roles {
4370: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4371: return unless((ref($cdom_courseroles) eq 'HASH') &&
4372: (ref($rolecodes) eq 'ARRAY') &&
4373: (ref($groups_roles) eq 'HASH'));
4374: if (keys(%{$cdom_courseroles}) > 0) {
4375: my ($cnum) = ($rest =~ /^($match_courseid)/);
4376: if ($cdom ne '' && $cnum ne '') {
4377: foreach my $key (keys(%{$cdom_courseroles})) {
4378: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4379: my $crsrole = $1;
4380: my $crssec = $2;
4381: if ($crsrole =~ /^cr/) {
4382: unless (grep(/^cr$/,@{$rolecodes})) {
4383: push(@{$rolecodes},'cr');
4384: }
4385: } else {
4386: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4387: push(@{$rolecodes},$crsrole);
4388: }
4389: }
4390: my $rolekey = "$crsrole./$cdom/$cnum";
4391: if ($crssec ne '') {
4392: $rolekey .= "/$crssec";
4393: }
4394: $rolekey .= './';
4395: $groups_roles->{$rolekey} = $rolecodes;
4396: }
4397: }
4398: }
4399: }
4400: return;
4401: }
4402:
4403: sub delete_env_groupprivs {
4404: my ($where,$courseroles,$possroles) = @_;
4405: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4406: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4407: unless (ref($courseroles->{$udom}) eq 'HASH') {
4408: %{$courseroles->{$udom}} =
4409: &get_my_roles('','','userroles',['active'],
4410: $possroles,[$udom],1);
4411: }
4412: if (ref($courseroles->{$udom}) eq 'HASH') {
4413: foreach my $item (keys(%{$courseroles->{$udom}})) {
4414: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4415: my $area = '/'.$cdom.'/'.$cnum;
4416: my $privkey = "user.priv.$crsrole.$area";
4417: if ($crssec ne '') {
4418: $privkey .= '/'.$crssec;
4419: }
4420: $privkey .= ".$area/$group";
4421: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
4422: }
4423: }
4424: return;
4425: }
4426:
4427: sub check_adhoc_privs {
4428: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
4429: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
4430: if ($env{$cckey}) {
4431: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
4432: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
4433: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
4434: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4435: }
4436: } else {
4437: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
4438: }
4439: }
4440:
4441: sub set_adhoc_privileges {
4442: # role can be cc or ca
4443: my ($dcdom,$pickedcourse,$role,$caller) = @_;
4444: my $area = '/'.$dcdom.'/'.$pickedcourse;
4445: my $spec = $role.'.'.$area;
4446: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
4447: $env{'user.name'});
4448: my %ccrole = ();
4449: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
4450: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
4451: &appenv(\%userroles,[$role,'cm']);
4452: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4453: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
4454: &appenv( {'request.role' => $spec,
4455: 'request.role.domain' => $dcdom,
4456: 'request.course.sec' => ''
4457: }
4458: );
4459: my $tadv=0;
4460: if (&allowed('adv') eq 'F') { $tadv=1; }
4461: &appenv({'request.role.adv' => $tadv});
4462: }
4463: }
4464:
4465: # --------------------------------------------------------------- get interface
4466:
4467: sub get {
4468: my ($namespace,$storearr,$udomain,$uname)=@_;
4469: my $items='';
4470: foreach my $item (@$storearr) {
4471: $items.=&escape($item).'&';
4472: }
4473: $items=~s/\&$//;
4474: if (!$udomain) { $udomain=$env{'user.domain'}; }
4475: if (!$uname) { $uname=$env{'user.name'}; }
4476: my $uhome=&homeserver($uname,$udomain);
4477:
4478: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
4479: my @pairs=split(/\&/,$rep);
4480: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
4481: return @pairs;
4482: }
4483: my %returnhash=();
4484: my $i=0;
4485: foreach my $item (@$storearr) {
4486: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4487: $i++;
4488: }
4489: return %returnhash;
4490: }
4491:
4492: # --------------------------------------------------------------- del interface
4493:
4494: sub del {
4495: my ($namespace,$storearr,$udomain,$uname)=@_;
4496: my $items='';
4497: foreach my $item (@$storearr) {
4498: $items.=&escape($item).'&';
4499: }
4500:
4501: $items=~s/\&$//;
4502: if (!$udomain) { $udomain=$env{'user.domain'}; }
4503: if (!$uname) { $uname=$env{'user.name'}; }
4504: my $uhome=&homeserver($uname,$udomain);
4505: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
4506: }
4507:
4508: # -------------------------------------------------------------- dump interface
4509:
4510: sub dump {
4511: my ($namespace,$udomain,$uname,$regexp,$range,$extra)=@_;
4512: if (!$udomain) { $udomain=$env{'user.domain'}; }
4513: if (!$uname) { $uname=$env{'user.name'}; }
4514: my $uhome=&homeserver($uname,$udomain);
4515: if ($regexp) {
4516: $regexp=&escape($regexp);
4517: } else {
4518: $regexp='.';
4519: }
4520: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range:$extra",$uhome);
4521: my @pairs=split(/\&/,$rep);
4522: my %returnhash=();
4523: if (!($rep =~ /^error/ )) {
4524: foreach my $item (@pairs) {
4525: my ($key,$value)=split(/=/,$item,2);
4526: $key = &unescape($key);
4527: next if ($key =~ /^error: 2 /);
4528: $returnhash{$key}=&thaw_unescape($value);
4529: }
4530: }
4531: return %returnhash;
4532: }
4533:
4534:
4535: # --------------------------------------------------------- dumpstore interface
4536:
4537: sub dumpstore {
4538: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
4539: if (!$udomain) { $udomain=$env{'user.domain'}; }
4540: if (!$uname) { $uname=$env{'user.name'}; }
4541: my $uhome=&homeserver($uname,$udomain);
4542: if ($regexp) {
4543: $regexp=&escape($regexp);
4544: } else {
4545: $regexp='.';
4546: }
4547: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
4548: my @pairs=split(/\&/,$rep);
4549: my %returnhash=();
4550: foreach my $item (@pairs) {
4551: my ($key,$value)=split(/=/,$item,2);
4552: next if ($key =~ /^error: 2 /);
4553: $returnhash{$key}=&thaw_unescape($value);
4554: }
4555: return %returnhash;
4556: }
4557:
4558: # -------------------------------------------------------------- keys interface
4559:
4560: sub getkeys {
4561: my ($namespace,$udomain,$uname)=@_;
4562: if (!$udomain) { $udomain=$env{'user.domain'}; }
4563: if (!$uname) { $uname=$env{'user.name'}; }
4564: my $uhome=&homeserver($uname,$udomain);
4565: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
4566: my @keyarray=();
4567: foreach my $key (split(/\&/,$rep)) {
4568: next if ($key =~ /^error: 2 /);
4569: push(@keyarray,&unescape($key));
4570: }
4571: return @keyarray;
4572: }
4573:
4574: # --------------------------------------------------------------- currentdump
4575: sub currentdump {
4576: my ($courseid,$sdom,$sname)=@_;
4577: $courseid = $env{'request.course.id'} if (! defined($courseid));
4578: $sdom = $env{'user.domain'} if (! defined($sdom));
4579: $sname = $env{'user.name'} if (! defined($sname));
4580: my $uhome = &homeserver($sname,$sdom);
4581: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
4582: return if ($rep =~ /^(error:|no_such_host)/);
4583: #
4584: my %returnhash=();
4585: #
4586: if ($rep eq "unknown_cmd") {
4587: # an old lond will not know currentdump
4588: # Do a dump and make it look like a currentdump
4589: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
4590: return if ($tmp[0] =~ /^(error:|no_such_host)/);
4591: my %hash = @tmp;
4592: @tmp=();
4593: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
4594: } else {
4595: my @pairs=split(/\&/,$rep);
4596: foreach my $pair (@pairs) {
4597: my ($key,$value)=split(/=/,$pair,2);
4598: my ($symb,$param) = split(/:/,$key);
4599: $returnhash{&unescape($symb)}->{&unescape($param)} =
4600: &thaw_unescape($value);
4601: }
4602: }
4603: return %returnhash;
4604: }
4605:
4606: sub convert_dump_to_currentdump{
4607: my %hash = %{shift()};
4608: my %returnhash;
4609: # Code ripped from lond, essentially. The only difference
4610: # here is the unescaping done by lonnet::dump(). Conceivably
4611: # we might run in to problems with parameter names =~ /^v\./
4612: while (my ($key,$value) = each(%hash)) {
4613: my ($v,$symb,$param) = split(/:/,$key);
4614: $symb = &unescape($symb);
4615: $param = &unescape($param);
4616: next if ($v eq 'version' || $symb eq 'keys');
4617: next if (exists($returnhash{$symb}) &&
4618: exists($returnhash{$symb}->{$param}) &&
4619: $returnhash{$symb}->{'v.'.$param} > $v);
4620: $returnhash{$symb}->{$param}=$value;
4621: $returnhash{$symb}->{'v.'.$param}=$v;
4622: }
4623: #
4624: # Remove all of the keys in the hashes which keep track of
4625: # the version of the parameter.
4626: while (my ($symb,$param_hash) = each(%returnhash)) {
4627: # use a foreach because we are going to delete from the hash.
4628: foreach my $key (keys(%$param_hash)) {
4629: delete($param_hash->{$key}) if ($key =~ /^v\./);
4630: }
4631: }
4632: return \%returnhash;
4633: }
4634:
4635: # ------------------------------------------------------ critical inc interface
4636:
4637: sub cinc {
4638: return &inc(@_,'critical');
4639: }
4640:
4641: # --------------------------------------------------------------- inc interface
4642:
4643: sub inc {
4644: my ($namespace,$store,$udomain,$uname,$critical) = @_;
4645: if (!$udomain) { $udomain=$env{'user.domain'}; }
4646: if (!$uname) { $uname=$env{'user.name'}; }
4647: my $uhome=&homeserver($uname,$udomain);
4648: my $items='';
4649: if (! ref($store)) {
4650: # got a single value, so use that instead
4651: $items = &escape($store).'=&';
4652: } elsif (ref($store) eq 'SCALAR') {
4653: $items = &escape($$store).'=&';
4654: } elsif (ref($store) eq 'ARRAY') {
4655: $items = join('=&',map {&escape($_);} @{$store});
4656: } elsif (ref($store) eq 'HASH') {
4657: while (my($key,$value) = each(%{$store})) {
4658: $items.= &escape($key).'='.&escape($value).'&';
4659: }
4660: }
4661: $items=~s/\&$//;
4662: if ($critical) {
4663: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
4664: } else {
4665: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
4666: }
4667: }
4668:
4669: # --------------------------------------------------------------- put interface
4670:
4671: sub put {
4672: my ($namespace,$storehash,$udomain,$uname)=@_;
4673: if (!$udomain) { $udomain=$env{'user.domain'}; }
4674: if (!$uname) { $uname=$env{'user.name'}; }
4675: my $uhome=&homeserver($uname,$udomain);
4676: my $items='';
4677: foreach my $item (keys(%$storehash)) {
4678: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4679: }
4680: $items=~s/\&$//;
4681: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4682: }
4683:
4684: # ------------------------------------------------------------ newput interface
4685:
4686: sub newput {
4687: my ($namespace,$storehash,$udomain,$uname)=@_;
4688: if (!$udomain) { $udomain=$env{'user.domain'}; }
4689: if (!$uname) { $uname=$env{'user.name'}; }
4690: my $uhome=&homeserver($uname,$udomain);
4691: my $items='';
4692: foreach my $key (keys(%$storehash)) {
4693: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4694: }
4695: $items=~s/\&$//;
4696: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
4697: }
4698:
4699: # --------------------------------------------------------- putstore interface
4700:
4701: sub putstore {
4702: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4703: if (!$udomain) { $udomain=$env{'user.domain'}; }
4704: if (!$uname) { $uname=$env{'user.name'}; }
4705: my $uhome=&homeserver($uname,$udomain);
4706: my $items='';
4707: foreach my $key (keys(%$storehash)) {
4708: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
4709: }
4710: $items=~s/\&$//;
4711: my $esc_symb=&escape($symb);
4712: my $esc_v=&escape($version);
4713: my $reply =
4714: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
4715: $uhome);
4716: if ($reply eq 'unknown_cmd') {
4717: # gfall back to way things use to be done
4718: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
4719: $uname);
4720: }
4721: return $reply;
4722: }
4723:
4724: sub old_putstore {
4725: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
4726: if (!$udomain) { $udomain=$env{'user.domain'}; }
4727: if (!$uname) { $uname=$env{'user.name'}; }
4728: my $uhome=&homeserver($uname,$udomain);
4729: my %newstorehash;
4730: foreach my $item (keys(%$storehash)) {
4731: my $key = $version.':'.&escape($symb).':'.$item;
4732: $newstorehash{$key} = $storehash->{$item};
4733: }
4734: my $items='';
4735: my %allitems = ();
4736: foreach my $item (keys(%newstorehash)) {
4737: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4738: my $key = $1.':keys:'.$2;
4739: $allitems{$key} .= $3.':';
4740: }
4741: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4742: }
4743: foreach my $item (keys(%allitems)) {
4744: $allitems{$item} =~ s/\:$//;
4745: $items.= $item.'='.$allitems{$item}.'&';
4746: }
4747: $items=~s/\&$//;
4748: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4749: }
4750:
4751: # ------------------------------------------------------ critical put interface
4752:
4753: sub cput {
4754: my ($namespace,$storehash,$udomain,$uname)=@_;
4755: if (!$udomain) { $udomain=$env{'user.domain'}; }
4756: if (!$uname) { $uname=$env{'user.name'}; }
4757: my $uhome=&homeserver($uname,$udomain);
4758: my $items='';
4759: foreach my $item (keys(%$storehash)) {
4760: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4761: }
4762: $items=~s/\&$//;
4763: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4764: }
4765:
4766: # -------------------------------------------------------------- eget interface
4767:
4768: sub eget {
4769: my ($namespace,$storearr,$udomain,$uname)=@_;
4770: my $items='';
4771: foreach my $item (@$storearr) {
4772: $items.=&escape($item).'&';
4773: }
4774: $items=~s/\&$//;
4775: if (!$udomain) { $udomain=$env{'user.domain'}; }
4776: if (!$uname) { $uname=$env{'user.name'}; }
4777: my $uhome=&homeserver($uname,$udomain);
4778: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4779: my @pairs=split(/\&/,$rep);
4780: my %returnhash=();
4781: my $i=0;
4782: foreach my $item (@$storearr) {
4783: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4784: $i++;
4785: }
4786: return %returnhash;
4787: }
4788:
4789: # ------------------------------------------------------------ tmpput interface
4790: sub tmpput {
4791: my ($storehash,$server,$context)=@_;
4792: my $items='';
4793: foreach my $item (keys(%$storehash)) {
4794: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4795: }
4796: $items=~s/\&$//;
4797: if (defined($context)) {
4798: $items .= ':'.&escape($context);
4799: }
4800: return &reply("tmpput:$items",$server);
4801: }
4802:
4803: # ------------------------------------------------------------ tmpget interface
4804: sub tmpget {
4805: my ($token,$server)=@_;
4806: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4807: my $rep=&reply("tmpget:$token",$server);
4808: my %returnhash;
4809: foreach my $item (split(/\&/,$rep)) {
4810: my ($key,$value)=split(/=/,$item);
4811: next if ($key =~ /^error: 2 /);
4812: $returnhash{&unescape($key)}=&thaw_unescape($value);
4813: }
4814: return %returnhash;
4815: }
4816:
4817: # ------------------------------------------------------------ tmpget interface
4818: sub tmpdel {
4819: my ($token,$server)=@_;
4820: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4821: return &reply("tmpdel:$token",$server);
4822: }
4823:
4824: # -------------------------------------------------- portfolio access checking
4825:
4826: sub portfolio_access {
4827: my ($requrl) = @_;
4828: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4829: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4830: if ($result) {
4831: my %setters;
4832: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4833: my ($startblock,$endblock) =
4834: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4835: if ($startblock && $endblock) {
4836: return 'B';
4837: }
4838: } else {
4839: my ($startblock,$endblock) =
4840: &Apache::loncommon::blockcheck(\%setters,'port');
4841: if ($startblock && $endblock) {
4842: return 'B';
4843: }
4844: }
4845: }
4846: if ($result eq 'ok') {
4847: return 'F';
4848: } elsif ($result =~ /^[^:]+:guest_/) {
4849: return 'A';
4850: }
4851: return '';
4852: }
4853:
4854: sub get_portfolio_access {
4855: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4856:
4857: if (!ref($access_hash)) {
4858: my $current_perms = &get_portfile_permissions($udom,$unum);
4859: my %access_controls = &get_access_controls($current_perms,$group,
4860: $file_name);
4861: $access_hash = $access_controls{$file_name};
4862: }
4863:
4864: my ($public,$guest,@domains,@users,@courses,@groups);
4865: my $now = time;
4866: if (ref($access_hash) eq 'HASH') {
4867: foreach my $key (keys(%{$access_hash})) {
4868: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4869: if ($start > $now) {
4870: next;
4871: }
4872: if ($end && $end<$now) {
4873: next;
4874: }
4875: if ($scope eq 'public') {
4876: $public = $key;
4877: last;
4878: } elsif ($scope eq 'guest') {
4879: $guest = $key;
4880: } elsif ($scope eq 'domains') {
4881: push(@domains,$key);
4882: } elsif ($scope eq 'users') {
4883: push(@users,$key);
4884: } elsif ($scope eq 'course') {
4885: push(@courses,$key);
4886: } elsif ($scope eq 'group') {
4887: push(@groups,$key);
4888: }
4889: }
4890: if ($public) {
4891: return 'ok';
4892: }
4893: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4894: if ($guest) {
4895: return $guest;
4896: }
4897: } else {
4898: if (@domains > 0) {
4899: foreach my $domkey (@domains) {
4900: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4901: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4902: return 'ok';
4903: }
4904: }
4905: }
4906: }
4907: if (@users > 0) {
4908: foreach my $userkey (@users) {
4909: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4910: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4911: if (ref($item) eq 'HASH') {
4912: if (($item->{'uname'} eq $env{'user.name'}) &&
4913: ($item->{'udom'} eq $env{'user.domain'})) {
4914: return 'ok';
4915: }
4916: }
4917: }
4918: }
4919: }
4920: }
4921: my %roleshash;
4922: my @courses_and_groups = @courses;
4923: push(@courses_and_groups,@groups);
4924: if (@courses_and_groups > 0) {
4925: my (%allgroups,%allroles);
4926: my ($start,$end,$role,$sec,$group);
4927: foreach my $envkey (%env) {
4928: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4929: my $cid = $2.'_'.$3;
4930: if ($1 eq 'gr') {
4931: $group = $4;
4932: $allgroups{$cid}{$group} = $env{$envkey};
4933: } else {
4934: if ($4 eq '') {
4935: $sec = 'none';
4936: } else {
4937: $sec = $4;
4938: }
4939: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4940: }
4941: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4942: my $cid = $2.'_'.$3;
4943: if ($4 eq '') {
4944: $sec = 'none';
4945: } else {
4946: $sec = $4;
4947: }
4948: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4949: }
4950: }
4951: if (keys(%allroles) == 0) {
4952: return;
4953: }
4954: foreach my $key (@courses_and_groups) {
4955: my %content = %{$$access_hash{$key}};
4956: my $cnum = $content{'number'};
4957: my $cdom = $content{'domain'};
4958: my $cid = $cdom.'_'.$cnum;
4959: if (!exists($allroles{$cid})) {
4960: next;
4961: }
4962: foreach my $role_id (keys(%{$content{'roles'}})) {
4963: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4964: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4965: my @status = @{$content{'roles'}{$role_id}{'access'}};
4966: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4967: foreach my $role (keys(%{$allroles{$cid}})) {
4968: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4969: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4970: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4971: if (grep/^all$/,@sections) {
4972: return 'ok';
4973: } else {
4974: if (grep/^$sec$/,@sections) {
4975: return 'ok';
4976: }
4977: }
4978: }
4979: }
4980: if (keys(%{$allgroups{$cid}}) == 0) {
4981: if (grep/^none$/,@groups) {
4982: return 'ok';
4983: }
4984: } else {
4985: if (grep/^all$/,@groups) {
4986: return 'ok';
4987: }
4988: foreach my $group (keys(%{$allgroups{$cid}})) {
4989: if (grep/^$group$/,@groups) {
4990: return 'ok';
4991: }
4992: }
4993: }
4994: }
4995: }
4996: }
4997: }
4998: }
4999: if ($guest) {
5000: return $guest;
5001: }
5002: }
5003: }
5004: return;
5005: }
5006:
5007: sub course_group_datechecker {
5008: my ($dates,$now,$status) = @_;
5009: my ($start,$end) = split(/\./,$dates);
5010: if (!$start && !$end) {
5011: return 'ok';
5012: }
5013: if (grep/^active$/,@{$status}) {
5014: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5015: return 'ok';
5016: }
5017: }
5018: if (grep/^previous$/,@{$status}) {
5019: if ($end > $now ) {
5020: return 'ok';
5021: }
5022: }
5023: if (grep/^future$/,@{$status}) {
5024: if ($start > $now) {
5025: return 'ok';
5026: }
5027: }
5028: return;
5029: }
5030:
5031: sub parse_portfolio_url {
5032: my ($url) = @_;
5033:
5034: my ($type,$udom,$unum,$group,$file_name);
5035:
5036: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5037: $type = 1;
5038: $udom = $1;
5039: $unum = $2;
5040: $file_name = $3;
5041: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5042: $type = 2;
5043: $udom = $1;
5044: $unum = $2;
5045: $group = $3;
5046: $file_name = $3.'/'.$4;
5047: }
5048: if (wantarray) {
5049: return ($type,$udom,$unum,$file_name,$group);
5050: }
5051: return $type;
5052: }
5053:
5054: sub is_portfolio_url {
5055: my ($url) = @_;
5056: return scalar(&parse_portfolio_url($url));
5057: }
5058:
5059: sub is_portfolio_file {
5060: my ($file) = @_;
5061: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5062: return 1;
5063: }
5064: return;
5065: }
5066:
5067: sub usertools_access {
5068: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5069: my ($access,%tools);
5070: if ($context eq '') {
5071: $context = 'tools';
5072: }
5073: if ($context eq 'requestcourses') {
5074: %tools = (
5075: official => 1,
5076: unofficial => 1,
5077: community => 1,
5078: );
5079: } else {
5080: %tools = (
5081: aboutme => 1,
5082: blog => 1,
5083: portfolio => 1,
5084: );
5085: }
5086: return if (!defined($tools{$tool}));
5087:
5088: if ((!defined($udom)) || (!defined($uname))) {
5089: $udom = $env{'user.domain'};
5090: $uname = $env{'user.name'};
5091: }
5092:
5093: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5094: if ($action ne 'reload') {
5095: if ($context eq 'requestcourses') {
5096: return $env{'environment.canrequest.'.$tool};
5097: } else {
5098: return $env{'environment.availabletools.'.$tool};
5099: }
5100: }
5101: }
5102:
5103: my ($toolstatus,$inststatus);
5104:
5105: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5106: ($action ne 'reload')) {
5107: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5108: $inststatus = $env{'environment.inststatus'};
5109: } else {
5110: if (ref($userenvref) eq 'HASH') {
5111: $toolstatus = $userenvref->{$context.'.'.$tool};
5112: $inststatus = $userenvref->{'inststatus'};
5113: } else {
5114: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5115: $toolstatus = $userenv{$context.'.'.$tool};
5116: $inststatus = $userenv{'inststatus'};
5117: }
5118: }
5119:
5120: if ($toolstatus ne '') {
5121: if ($toolstatus) {
5122: $access = 1;
5123: } else {
5124: $access = 0;
5125: }
5126: return $access;
5127: }
5128:
5129: my ($is_adv,%domdef);
5130: if (ref($is_advref) eq 'HASH') {
5131: $is_adv = $is_advref->{'is_adv'};
5132: } else {
5133: $is_adv = &is_advanced_user($udom,$uname);
5134: }
5135: if (ref($domdefref) eq 'HASH') {
5136: %domdef = %{$domdefref};
5137: } else {
5138: %domdef = &get_domain_defaults($udom);
5139: }
5140: if (ref($domdef{$tool}) eq 'HASH') {
5141: if ($is_adv) {
5142: if ($domdef{$tool}{'_LC_adv'} ne '') {
5143: if ($domdef{$tool}{'_LC_adv'}) {
5144: $access = 1;
5145: } else {
5146: $access = 0;
5147: }
5148: return $access;
5149: }
5150: }
5151: if ($inststatus ne '') {
5152: my ($hasaccess,$hasnoaccess);
5153: foreach my $affiliation (split(/:/,$inststatus)) {
5154: if ($domdef{$tool}{$affiliation} ne '') {
5155: if ($domdef{$tool}{$affiliation}) {
5156: $hasaccess = 1;
5157: } else {
5158: $hasnoaccess = 1;
5159: }
5160: }
5161: }
5162: if ($hasaccess || $hasnoaccess) {
5163: if ($hasaccess) {
5164: $access = 1;
5165: } elsif ($hasnoaccess) {
5166: $access = 0;
5167: }
5168: return $access;
5169: }
5170: } else {
5171: if ($domdef{$tool}{'default'} ne '') {
5172: if ($domdef{$tool}{'default'}) {
5173: $access = 1;
5174: } elsif ($domdef{$tool}{'default'} == 0) {
5175: $access = 0;
5176: }
5177: return $access;
5178: }
5179: }
5180: } else {
5181: if ($context eq 'tools') {
5182: $access = 1;
5183: } else {
5184: $access = 0;
5185: }
5186: return $access;
5187: }
5188: }
5189:
5190: sub is_course_owner {
5191: my ($cdom,$cnum,$udom,$uname) = @_;
5192: if (($udom eq '') || ($uname eq '')) {
5193: $udom = $env{'user.domain'};
5194: $uname = $env{'user.name'};
5195: }
5196: unless (($udom eq '') || ($uname eq '')) {
5197: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5198: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5199: return 1;
5200: } else {
5201: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5202: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5203: return 1;
5204: }
5205: }
5206: }
5207: }
5208: return;
5209: }
5210:
5211: sub is_advanced_user {
5212: my ($udom,$uname) = @_;
5213: if ($udom ne '' && $uname ne '') {
5214: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5215: return $env{'user.adv'};
5216: }
5217: }
5218: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5219: my %allroles;
5220: my $is_adv;
5221: foreach my $role (keys(%roleshash)) {
5222: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5223: my $area = '/'.$tdomain.'/'.$trest;
5224: if ($sec ne '') {
5225: $area .= '/'.$sec;
5226: }
5227: if (($area ne '') && ($trole ne '')) {
5228: my $spec=$trole.'.'.$area;
5229: if ($trole =~ /^cr\//) {
5230: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5231: } elsif ($trole ne 'gr') {
5232: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5233: }
5234: }
5235: }
5236: foreach my $role (keys(%allroles)) {
5237: last if ($is_adv);
5238: foreach my $item (split(/:/,$allroles{$role})) {
5239: if ($item ne '') {
5240: my ($privilege,$restrictions)=split(/&/,$item);
5241: if ($privilege eq 'adv') {
5242: $is_adv = 1;
5243: last;
5244: }
5245: }
5246: }
5247: }
5248: return $is_adv;
5249: }
5250:
5251: sub check_can_request {
5252: my ($dom,$can_request,$request_domains) = @_;
5253: my $canreq = 0;
5254: my ($types,$typename) = &Apache::loncommon::course_types();
5255: my @options = ('approval','validate','autolimit');
5256: my $optregex = join('|',@options);
5257: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5258: foreach my $type (@{$types}) {
5259: if (&usertools_access($env{'user.name'},
5260: $env{'user.domain'},
5261: $type,undef,'requestcourses')) {
5262: $canreq ++;
5263: if (ref($request_domains) eq 'HASH') {
5264: push(@{$request_domains->{$type}},$env{'user.domain'});
5265: }
5266: if ($dom eq $env{'user.domain'}) {
5267: $can_request->{$type} = 1;
5268: }
5269: }
5270: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5271: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5272: if (@curr > 0) {
5273: foreach my $item (@curr) {
5274: if (ref($request_domains) eq 'HASH') {
5275: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5276: if ($otherdom ne '') {
5277: if (ref($request_domains->{$type}) eq 'ARRAY') {
5278: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5279: push(@{$request_domains->{$type}},$otherdom);
5280: }
5281: } else {
5282: push(@{$request_domains->{$type}},$otherdom);
5283: }
5284: }
5285: }
5286: }
5287: unless($dom eq $env{'user.domain'}) {
5288: $canreq ++;
5289: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5290: $can_request->{$type} = 1;
5291: }
5292: }
5293: }
5294: }
5295: }
5296: }
5297: return $canreq;
5298: }
5299:
5300: # ---------------------------------------------- Custom access rule evaluation
5301:
5302: sub customaccess {
5303: my ($priv,$uri)=@_;
5304: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5305: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5306: $udom = &LONCAPA::clean_domain($udom);
5307: $ucrs = &LONCAPA::clean_username($ucrs);
5308: my $access=0;
5309: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5310: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5311: if ($type eq 'user') {
5312: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5313: my ($tdom,$tuname)=split(m{/},$scope);
5314: if ($tdom) {
5315: if ($tdom ne $env{'user.domain'}) { next; }
5316: }
5317: if ($tuname) {
5318: if ($tuname ne $env{'user.name'}) { next; }
5319: }
5320: $access=($effect eq 'allow');
5321: last;
5322: }
5323: } else {
5324: if ($role) {
5325: if ($role ne $urole) { next; }
5326: }
5327: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5328: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5329: if ($tdom) {
5330: if ($tdom ne $udom) { next; }
5331: }
5332: if ($tcrs) {
5333: if ($tcrs ne $ucrs) { next; }
5334: }
5335: if ($tsec) {
5336: if ($tsec ne $usec) { next; }
5337: }
5338: $access=($effect eq 'allow');
5339: last;
5340: }
5341: if ($realm eq '' && $role eq '') {
5342: $access=($effect eq 'allow');
5343: }
5344: }
5345: }
5346: return $access;
5347: }
5348:
5349: # ------------------------------------------------- Check for a user privilege
5350:
5351: sub allowed {
5352: my ($priv,$uri,$symb,$role)=@_;
5353: my $ver_orguri=$uri;
5354: $uri=&deversion($uri);
5355: my $orguri=$uri;
5356: $uri=&declutter($uri);
5357:
5358: if ($priv eq 'evb') {
5359: # Evade communication block restrictions for specified role in a course
5360: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5361: return $1;
5362: } else {
5363: return;
5364: }
5365: }
5366:
5367: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5368: # Free bre access to adm and meta resources
5369: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5370: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5371: && ($priv eq 'bre')) {
5372: return 'F';
5373: }
5374:
5375: # Free bre access to user's own portfolio contents
5376: my ($space,$domain,$name,@dir)=split('/',$uri);
5377: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5378: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5379: my %setters;
5380: my ($startblock,$endblock) =
5381: &Apache::loncommon::blockcheck(\%setters,'port');
5382: if ($startblock && $endblock) {
5383: return 'B';
5384: } else {
5385: return 'F';
5386: }
5387: }
5388:
5389: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
5390: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
5391: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
5392: if (exists($env{'request.course.id'})) {
5393: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5394: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5395: if (($domain eq $cdom) && ($name eq $cnum)) {
5396: my $courseprivid=$env{'request.course.id'};
5397: $courseprivid=~s/\_/\//;
5398: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
5399: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
5400: return $1;
5401: } else {
5402: if ($env{'request.course.sec'}) {
5403: $courseprivid.='/'.$env{'request.course.sec'};
5404: }
5405: if ($env{'user.priv.'.$env{'request.role'}.'./'.
5406: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
5407: return $2;
5408: }
5409: }
5410: }
5411: }
5412: }
5413:
5414: # Free bre to public access
5415:
5416: if ($priv eq 'bre') {
5417: my $copyright=&metadata($uri,'copyright');
5418: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
5419: return 'F';
5420: }
5421: if ($copyright eq 'priv') {
5422: $uri=~/([^\/]+)\/([^\/]+)\//;
5423: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
5424: return '';
5425: }
5426: }
5427: if ($copyright eq 'domain') {
5428: $uri=~/([^\/]+)\/([^\/]+)\//;
5429: unless (($env{'user.domain'} eq $1) ||
5430: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
5431: return '';
5432: }
5433: }
5434: if ($env{'request.role'}=~ /li\.\//) {
5435: # Library role, so allow browsing of resources in this domain.
5436: return 'F';
5437: }
5438: if ($copyright eq 'custom') {
5439: unless (&customaccess($priv,$uri)) { return ''; }
5440: }
5441: }
5442: # Domain coordinator is trying to create a course
5443: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
5444: # uri is the requested domain in this case.
5445: # comparison to 'request.role.domain' shows if the user has selected
5446: # a role of dc for the domain in question.
5447: return 'F' if ($uri eq $env{'request.role.domain'});
5448: }
5449:
5450: my $thisallowed='';
5451: my $statecond=0;
5452: my $courseprivid='';
5453:
5454: my $ownaccess;
5455: # Community Coordinator or Assistant Co-author browsing resource space.
5456: if (($priv eq 'bro') && ($env{'user.author'})) {
5457: if ($uri eq '') {
5458: $ownaccess = 1;
5459: } else {
5460: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
5461: my $udom = $env{'user.domain'};
5462: my $uname = $env{'user.name'};
5463: if ($uri =~ m{^\Q$udom\E/?$}) {
5464: $ownaccess = 1;
5465: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
5466: unless ($uri =~ m{\.\./}) {
5467: $ownaccess = 1;
5468: }
5469: } elsif (($udom ne 'public') && ($uname ne 'public')) {
5470: my $now = time;
5471: if ($uri =~ m{^([^/]+)/?$}) {
5472: my $adom = $1;
5473: foreach my $key (keys(%env)) {
5474: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
5475: my ($start,$end) = split('.',$env{$key});
5476: if (($now >= $start) && (!$end || $end < $now)) {
5477: $ownaccess = 1;
5478: last;
5479: }
5480: }
5481: }
5482: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
5483: my $adom = $1;
5484: my $aname = $2;
5485: foreach my $role ('ca','aa') {
5486: if ($env{"user.role.$role./$adom/$aname"}) {
5487: my ($start,$end) =
5488: split('.',$env{"user.role.$role./$adom/$aname"});
5489: if (($now >= $start) && (!$end || $end < $now)) {
5490: $ownaccess = 1;
5491: last;
5492: }
5493: }
5494: }
5495: }
5496: }
5497: }
5498: }
5499: }
5500:
5501: # Course
5502:
5503: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
5504: unless (($priv eq 'bro') && (!$ownaccess)) {
5505: $thisallowed.=$1;
5506: }
5507: }
5508:
5509: # Domain
5510:
5511: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
5512: =~/\Q$priv\E\&([^\:]*)/) {
5513: unless (($priv eq 'bro') && (!$ownaccess)) {
5514: $thisallowed.=$1;
5515: }
5516: }
5517:
5518: # Course: uri itself is a course
5519: my $courseuri=$uri;
5520: $courseuri=~s/\_(\d)/\/$1/;
5521: $courseuri=~s/^([^\/])/\/$1/;
5522:
5523: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
5524: =~/\Q$priv\E\&([^\:]*)/) {
5525: unless (($priv eq 'bro') && (!$ownaccess)) {
5526: $thisallowed.=$1;
5527: }
5528: }
5529:
5530: # URI is an uploaded document for this course, default permissions don't matter
5531: # not allowing 'edit' access (editupload) to uploaded course docs
5532: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
5533: $thisallowed='';
5534: my ($match)=&is_on_map($uri);
5535: if ($match) {
5536: if ($env{'user.priv.'.$env{'request.role'}.'./'}
5537: =~/\Q$priv\E\&([^\:]*)/) {
5538: $thisallowed.=$1;
5539: }
5540: } else {
5541: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
5542: if ($refuri) {
5543: if ($refuri =~ m|^/adm/|) {
5544: $thisallowed='F';
5545: } else {
5546: $refuri=&declutter($refuri);
5547: my ($match) = &is_on_map($refuri);
5548: if ($match) {
5549: $thisallowed='F';
5550: }
5551: }
5552: }
5553: }
5554: }
5555:
5556: if ($priv eq 'bre'
5557: && $thisallowed ne 'F'
5558: && $thisallowed ne '2'
5559: && &is_portfolio_url($uri)) {
5560: $thisallowed = &portfolio_access($uri);
5561: }
5562:
5563: # Full access at system, domain or course-wide level? Exit.
5564: if ($thisallowed=~/F/) {
5565: return 'F';
5566: }
5567:
5568: # If this is generating or modifying users, exit with special codes
5569:
5570: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
5571: if (($priv eq 'cca') || ($priv eq 'caa')) {
5572: my ($audom,$auname)=split('/',$uri);
5573: # no author name given, so this just checks on the general right to make a co-author in this domain
5574: unless ($auname) { return $thisallowed; }
5575: # an author name is given, so we are about to actually make a co-author for a certain account
5576: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
5577: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
5578: ($audom ne $env{'request.role.domain'}))) { return ''; }
5579: }
5580: return $thisallowed;
5581: }
5582: #
5583: # Gathered so far: system, domain and course wide privileges
5584: #
5585: # Course: See if uri or referer is an individual resource that is part of
5586: # the course
5587:
5588: if ($env{'request.course.id'}) {
5589:
5590: $courseprivid=$env{'request.course.id'};
5591: if ($env{'request.course.sec'}) {
5592: $courseprivid.='/'.$env{'request.course.sec'};
5593: }
5594: $courseprivid=~s/\_/\//;
5595: my $checkreferer=1;
5596: my ($match,$cond)=&is_on_map($uri);
5597: if ($match) {
5598: $statecond=$cond;
5599: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5600: =~/\Q$priv\E\&([^\:]*)/) {
5601: $thisallowed.=$1;
5602: $checkreferer=0;
5603: }
5604: }
5605:
5606: if ($checkreferer) {
5607: my $refuri=$env{'httpref.'.$orguri};
5608: unless ($refuri) {
5609: foreach my $key (keys(%env)) {
5610: if ($key=~/^httpref\..*\*/) {
5611: my $pattern=$key;
5612: $pattern=~s/^httpref\.\/res\///;
5613: $pattern=~s/\*/\[\^\/\]\+/g;
5614: $pattern=~s/\//\\\//g;
5615: if ($orguri=~/$pattern/) {
5616: $refuri=$env{$key};
5617: }
5618: }
5619: }
5620: }
5621:
5622: if ($refuri) {
5623: $refuri=&declutter($refuri);
5624: my ($match,$cond)=&is_on_map($refuri);
5625: if ($match) {
5626: my $refstatecond=$cond;
5627: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
5628: =~/\Q$priv\E\&([^\:]*)/) {
5629: $thisallowed.=$1;
5630: $uri=$refuri;
5631: $statecond=$refstatecond;
5632: }
5633: }
5634: }
5635: }
5636: }
5637:
5638: #
5639: # Gathered now: all privileges that could apply, and condition number
5640: #
5641: #
5642: # Full or no access?
5643: #
5644:
5645: if ($thisallowed=~/F/) {
5646: return 'F';
5647: }
5648:
5649: unless ($thisallowed) {
5650: return '';
5651: }
5652:
5653: # Restrictions exist, deal with them
5654: #
5655: # C:according to course preferences
5656: # R:according to resource settings
5657: # L:unless locked
5658: # X:according to user session state
5659: #
5660:
5661: # Possibly locked functionality, check all courses
5662: # Locks might take effect only after 10 minutes cache expiration for other
5663: # courses, and 2 minutes for current course
5664:
5665: my $envkey;
5666: if ($thisallowed=~/L/) {
5667: foreach $envkey (keys(%env)) {
5668: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
5669: my $courseid=$2;
5670: my $roleid=$1.'.'.$2;
5671: $courseid=~s/^\///;
5672: my $expiretime=600;
5673: if ($env{'request.role'} eq $roleid) {
5674: $expiretime=120;
5675: }
5676: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
5677: my $prefix='course.'.$cdom.'_'.$cnum.'.';
5678: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
5679: &coursedescription($courseid,{'freshen_cache' => 1});
5680: }
5681: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
5682: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
5683: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
5684: &log($env{'user.domain'},$env{'user.name'},
5685: $env{'user.home'},
5686: 'Locked by res: '.$priv.' for '.$uri.' due to '.
5687: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5688: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5689: return '';
5690: }
5691: }
5692: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
5693: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
5694: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
5695: &log($env{'user.domain'},$env{'user.name'},
5696: $env{'user.home'},
5697: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
5698: $cdom.'/'.$cnum.'/'.$csec.' expire '.
5699: $env{$prefix.'priv.'.$priv.'.lock.expire'});
5700: return '';
5701: }
5702: }
5703: }
5704: }
5705: }
5706:
5707: #
5708: # Rest of the restrictions depend on selected course
5709: #
5710:
5711: unless ($env{'request.course.id'}) {
5712: if ($thisallowed eq 'A') {
5713: return 'A';
5714: } elsif ($thisallowed eq 'B') {
5715: return 'B';
5716: } else {
5717: return '1';
5718: }
5719: }
5720:
5721: #
5722: # Now user is definitely in a course
5723: #
5724:
5725:
5726: # Course preferences
5727:
5728: if ($thisallowed=~/C/) {
5729: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5730: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
5731: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
5732: =~/\Q$rolecode\E/) {
5733: if (($priv ne 'pch') && ($priv ne 'plc')) {
5734: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5735: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
5736: $env{'request.course.id'});
5737: }
5738: return '';
5739: }
5740:
5741: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
5742: =~/\Q$unamedom\E/) {
5743: if (($priv ne 'pch') && ($priv ne 'plc')) {
5744: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
5745: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
5746: $env{'request.course.id'});
5747: }
5748: return '';
5749: }
5750: }
5751:
5752: # Resource preferences
5753:
5754: if ($thisallowed=~/R/) {
5755: my $rolecode=(split(/\./,$env{'request.role'}))[0];
5756: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
5757: if (($priv ne 'pch') && ($priv ne 'plc')) {
5758: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
5759: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
5760: }
5761: return '';
5762: }
5763: }
5764:
5765: # Restricted by state or randomout?
5766:
5767: if ($thisallowed=~/X/) {
5768: if ($env{'acc.randomout'}) {
5769: if (!$symb) { $symb=&symbread($uri,1); }
5770: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
5771: return '';
5772: }
5773: }
5774: if (&condval($statecond)) {
5775: return '2';
5776: } else {
5777: return '';
5778: }
5779: }
5780:
5781: if ($thisallowed eq 'A') {
5782: return 'A';
5783: } elsif ($thisallowed eq 'B') {
5784: return 'B';
5785: }
5786: return 'F';
5787: }
5788:
5789: sub split_uri_for_cond {
5790: my $uri=&deversion(&declutter(shift));
5791: my @uriparts=split(/\//,$uri);
5792: my $filename=pop(@uriparts);
5793: my $pathname=join('/',@uriparts);
5794: return ($pathname,$filename);
5795: }
5796: # --------------------------------------------------- Is a resource on the map?
5797:
5798: sub is_on_map {
5799: my ($pathname,$filename) = &split_uri_for_cond(shift);
5800: #Trying to find the conditional for the file
5801: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
5802: /\&\Q$filename\E\:([\d\|]+)\&/);
5803: if ($match) {
5804: return (1,$1);
5805: } else {
5806: return (0,0);
5807: }
5808: }
5809:
5810: # --------------------------------------------------------- Get symb from alias
5811:
5812: sub get_symb_from_alias {
5813: my $symb=shift;
5814: my ($map,$resid,$url)=&decode_symb($symb);
5815: # Already is a symb
5816: if ($url) { return $symb; }
5817: # Must be an alias
5818: my $aliassymb='';
5819: my %bighash;
5820: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5821: &GDBM_READER(),0640)) {
5822: my $rid=$bighash{'mapalias_'.$symb};
5823: if ($rid) {
5824: my ($mapid,$resid)=split(/\./,$rid);
5825: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
5826: $resid,$bighash{'src_'.$rid});
5827: }
5828: untie %bighash;
5829: }
5830: return $aliassymb;
5831: }
5832:
5833: # ----------------------------------------------------------------- Define Role
5834:
5835: sub definerole {
5836: if (allowed('mcr','/')) {
5837: my ($rolename,$sysrole,$domrole,$courole)=@_;
5838: foreach my $role (split(':',$sysrole)) {
5839: my ($crole,$cqual)=split(/\&/,$role);
5840: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
5841: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
5842: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5843: return "refused:s:$crole&$cqual";
5844: }
5845: }
5846: }
5847: foreach my $role (split(':',$domrole)) {
5848: my ($crole,$cqual)=split(/\&/,$role);
5849: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
5850: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
5851: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
5852: return "refused:d:$crole&$cqual";
5853: }
5854: }
5855: }
5856: foreach my $role (split(':',$courole)) {
5857: my ($crole,$cqual)=split(/\&/,$role);
5858: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
5859: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
5860: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
5861: return "refused:c:$crole&$cqual";
5862: }
5863: }
5864: }
5865: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5866: "$env{'user.domain'}:$env{'user.name'}:".
5867: "rolesdef_$rolename=".
5868: escape($sysrole.'_'.$domrole.'_'.$courole);
5869: return reply($command,$env{'user.home'});
5870: } else {
5871: return 'refused';
5872: }
5873: }
5874:
5875: # ---------------- Make a metadata query against the network of library servers
5876:
5877: sub metadata_query {
5878: my ($query,$custom,$customshow,$server_array)=@_;
5879: my %rhash;
5880: my %libserv = &all_library();
5881: my @server_list = (defined($server_array) ? @$server_array
5882: : keys(%libserv) );
5883: for my $server (@server_list) {
5884: unless ($custom or $customshow) {
5885: my $reply=&reply("querysend:".&escape($query),$server);
5886: $rhash{$server}=$reply;
5887: }
5888: else {
5889: my $reply=&reply("querysend:".&escape($query).':'.
5890: &escape($custom).':'.&escape($customshow),
5891: $server);
5892: $rhash{$server}=$reply;
5893: }
5894: }
5895: return \%rhash;
5896: }
5897:
5898: # ----------------------------------------- Send log queries and wait for reply
5899:
5900: sub log_query {
5901: my ($uname,$udom,$query,%filters)=@_;
5902: my $uhome=&homeserver($uname,$udom);
5903: if ($uhome eq 'no_host') { return 'error: no_host'; }
5904: my $uhost=&hostname($uhome);
5905: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
5906: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
5907: $uhome);
5908: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
5909: return get_query_reply($queryid);
5910: }
5911:
5912: # -------------------------- Update MySQL table for portfolio file
5913:
5914: sub update_portfolio_table {
5915: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
5916: if ($group ne '') {
5917: $file_name =~s /^\Q$group\E//;
5918: }
5919: my $homeserver = &homeserver($uname,$udom);
5920: my $queryid=
5921: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
5922: ':'.&escape($file_name).':'.$action,$homeserver);
5923: my $reply = &get_query_reply($queryid);
5924: return $reply;
5925: }
5926:
5927: # -------------------------- Update MySQL allusers table
5928:
5929: sub update_allusers_table {
5930: my ($uname,$udom,$names) = @_;
5931: my $homeserver = &homeserver($uname,$udom);
5932: my $queryid=
5933: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
5934: 'lastname='.&escape($names->{'lastname'}).'%%'.
5935: 'firstname='.&escape($names->{'firstname'}).'%%'.
5936: 'middlename='.&escape($names->{'middlename'}).'%%'.
5937: 'generation='.&escape($names->{'generation'}).'%%'.
5938: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
5939: 'id='.&escape($names->{'id'}),$homeserver);
5940: return;
5941: }
5942:
5943: # ------- Request retrieval of institutional classlists for course(s)
5944:
5945: sub fetch_enrollment_query {
5946: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
5947: my $homeserver;
5948: my $maxtries = 1;
5949: if ($context eq 'automated') {
5950: $homeserver = $perlvar{'lonHostID'};
5951: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
5952: } else {
5953: $homeserver = &homeserver($cnum,$dom);
5954: }
5955: my $host=&hostname($homeserver);
5956: my $cmd = '';
5957: foreach my $affiliate (keys(%{$affiliatesref})) {
5958: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5959: }
5960: $cmd =~ s/%%$//;
5961: $cmd = &escape($cmd);
5962: my $query = 'fetchenrollment';
5963: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
5964: unless ($queryid=~/^\Q$host\E\_/) {
5965: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
5966: return 'error: '.$queryid;
5967: }
5968: my $reply = &get_query_reply($queryid);
5969: my $tries = 1;
5970: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5971: $reply = &get_query_reply($queryid);
5972: $tries ++;
5973: }
5974: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5975: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5976: } else {
5977: my @responses = split(/:/,$reply);
5978: if ($homeserver eq $perlvar{'lonHostID'}) {
5979: foreach my $line (@responses) {
5980: my ($key,$value) = split(/=/,$line,2);
5981: $$replyref{$key} = $value;
5982: }
5983: } else {
5984: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
5985: foreach my $line (@responses) {
5986: my ($key,$value) = split(/=/,$line);
5987: $$replyref{$key} = $value;
5988: if ($value > 0) {
5989: foreach my $item (@{$$affiliatesref{$key}}) {
5990: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
5991: my $destname = $pathname.'/'.$filename;
5992: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
5993: if ($xml_classlist =~ /^error/) {
5994: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
5995: } else {
5996: if ( open(FILE,">$destname") ) {
5997: print FILE &unescape($xml_classlist);
5998: close(FILE);
5999: } else {
6000: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6001: }
6002: }
6003: }
6004: }
6005: }
6006: }
6007: return 'ok';
6008: }
6009: return 'error';
6010: }
6011:
6012: sub get_query_reply {
6013: my $queryid=shift;
6014: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
6015: my $reply='';
6016: for (1..100) {
6017: sleep 2;
6018: if (-e $replyfile.'.end') {
6019: if (open(my $fh,$replyfile)) {
6020: $reply = join('',<$fh>);
6021: close($fh);
6022: } else { return 'error: reply_file_error'; }
6023: return &unescape($reply);
6024: }
6025: }
6026: return 'timeout:'.$queryid;
6027: }
6028:
6029: sub courselog_query {
6030: #
6031: # possible filters:
6032: # url: url or symb
6033: # username
6034: # domain
6035: # action: view, submit, grade
6036: # start: timestamp
6037: # end: timestamp
6038: #
6039: my (%filters)=@_;
6040: unless ($env{'request.course.id'}) { return 'no_course'; }
6041: if ($filters{'url'}) {
6042: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6043: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6044: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6045: }
6046: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6047: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6048: return &log_query($cname,$cdom,'courselog',%filters);
6049: }
6050:
6051: sub userlog_query {
6052: #
6053: # possible filters:
6054: # action: log check role
6055: # start: timestamp
6056: # end: timestamp
6057: #
6058: my ($uname,$udom,%filters)=@_;
6059: return &log_query($uname,$udom,'userlog',%filters);
6060: }
6061:
6062: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6063:
6064: sub auto_run {
6065: my ($cnum,$cdom) = @_;
6066: my $response = 0;
6067: my $settings;
6068: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6069: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6070: $settings = $domconfig{'autoenroll'};
6071: if ($settings->{'run'} eq '1') {
6072: $response = 1;
6073: }
6074: } else {
6075: my $homeserver;
6076: if (&is_course($cdom,$cnum)) {
6077: $homeserver = &homeserver($cnum,$cdom);
6078: } else {
6079: $homeserver = &domain($cdom,'primary');
6080: }
6081: if ($homeserver ne 'no_host') {
6082: $response = &reply('autorun:'.$cdom,$homeserver);
6083: }
6084: }
6085: return $response;
6086: }
6087:
6088: sub auto_get_sections {
6089: my ($cnum,$cdom,$inst_coursecode) = @_;
6090: my $homeserver;
6091: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6092: $homeserver = &homeserver($cnum,$cdom);
6093: }
6094: if (!defined($homeserver)) {
6095: if ($cdom =~ /^$match_domain$/) {
6096: $homeserver = &domain($cdom,'primary');
6097: }
6098: }
6099: my @secs;
6100: if (defined($homeserver)) {
6101: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6102: unless ($response eq 'refused') {
6103: @secs = split(/:/,$response);
6104: }
6105: }
6106: return @secs;
6107: }
6108:
6109: sub auto_new_course {
6110: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6111: my $homeserver = &homeserver($cnum,$cdom);
6112: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6113: return $response;
6114: }
6115:
6116: sub auto_validate_courseID {
6117: my ($cnum,$cdom,$inst_course_id) = @_;
6118: my $homeserver = &homeserver($cnum,$cdom);
6119: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6120: return $response;
6121: }
6122:
6123: sub auto_validate_instcode {
6124: my ($cnum,$cdom,$instcode,$owner) = @_;
6125: my ($homeserver,$response);
6126: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6127: $homeserver = &homeserver($cnum,$cdom);
6128: }
6129: if (!defined($homeserver)) {
6130: if ($cdom =~ /^$match_domain$/) {
6131: $homeserver = &domain($cdom,'primary');
6132: }
6133: }
6134: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6135: &escape($instcode).':'.&escape($owner),$homeserver));
6136: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6137: return ($outcome,$description);
6138: }
6139:
6140: sub auto_create_password {
6141: my ($cnum,$cdom,$authparam,$udom) = @_;
6142: my ($homeserver,$response);
6143: my $create_passwd = 0;
6144: my $authchk = '';
6145: if ($udom =~ /^$match_domain$/) {
6146: $homeserver = &domain($udom,'primary');
6147: }
6148: if ($homeserver eq '') {
6149: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6150: $homeserver = &homeserver($cnum,$cdom);
6151: }
6152: }
6153: if ($homeserver eq '') {
6154: $authchk = 'nodomain';
6155: } else {
6156: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6157: if ($response eq 'refused') {
6158: $authchk = 'refused';
6159: } else {
6160: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6161: }
6162: }
6163: return ($authparam,$create_passwd,$authchk);
6164: }
6165:
6166: sub auto_photo_permission {
6167: my ($cnum,$cdom,$students) = @_;
6168: my $homeserver = &homeserver($cnum,$cdom);
6169: my ($outcome,$perm_reqd,$conditions) =
6170: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
6171: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6172: return (undef,undef);
6173: }
6174: return ($outcome,$perm_reqd,$conditions);
6175: }
6176:
6177: sub auto_checkphotos {
6178: my ($uname,$udom,$pid) = @_;
6179: my $homeserver = &homeserver($uname,$udom);
6180: my ($result,$resulttype);
6181: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
6182: &escape($uname).':'.&escape($pid),
6183: $homeserver));
6184: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6185: return (undef,undef);
6186: }
6187: if ($outcome) {
6188: ($result,$resulttype) = split(/:/,$outcome);
6189: }
6190: return ($result,$resulttype);
6191: }
6192:
6193: sub auto_photochoice {
6194: my ($cnum,$cdom) = @_;
6195: my $homeserver = &homeserver($cnum,$cdom);
6196: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
6197: &escape($cdom),
6198: $homeserver)));
6199: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
6200: return (undef,undef);
6201: }
6202: return ($update,$comment);
6203: }
6204:
6205: sub auto_photoupdate {
6206: my ($affiliatesref,$dom,$cnum,$photo) = @_;
6207: my $homeserver = &homeserver($cnum,$dom);
6208: my $host=&hostname($homeserver);
6209: my $cmd = '';
6210: my $maxtries = 1;
6211: foreach my $affiliate (keys(%{$affiliatesref})) {
6212: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6213: }
6214: $cmd =~ s/%%$//;
6215: $cmd = &escape($cmd);
6216: my $query = 'institutionalphotos';
6217: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
6218: unless ($queryid=~/^\Q$host\E\_/) {
6219: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
6220: return 'error: '.$queryid;
6221: }
6222: my $reply = &get_query_reply($queryid);
6223: my $tries = 1;
6224: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6225: $reply = &get_query_reply($queryid);
6226: $tries ++;
6227: }
6228: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6229: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6230: } else {
6231: my @responses = split(/:/,$reply);
6232: my $outcome = shift(@responses);
6233: foreach my $item (@responses) {
6234: my ($key,$value) = split(/=/,$item);
6235: $$photo{$key} = $value;
6236: }
6237: return $outcome;
6238: }
6239: return 'error';
6240: }
6241:
6242: sub auto_instcode_format {
6243: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
6244: $cat_order) = @_;
6245: my $courses = '';
6246: my @homeservers;
6247: if ($caller eq 'global') {
6248: my %servers = &get_servers($codedom,'library');
6249: foreach my $tryserver (keys(%servers)) {
6250: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6251: push(@homeservers,$tryserver);
6252: }
6253: }
6254: } elsif ($caller eq 'requests') {
6255: if ($codedom =~ /^$match_domain$/) {
6256: my $chome = &domain($codedom,'primary');
6257: unless ($chome eq 'no_host') {
6258: push(@homeservers,$chome);
6259: }
6260: }
6261: } else {
6262: push(@homeservers,&homeserver($caller,$codedom));
6263: }
6264: foreach my $code (keys(%{$instcodes})) {
6265: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
6266: }
6267: chop($courses);
6268: my $ok_response = 0;
6269: my $response;
6270: while (@homeservers > 0 && $ok_response == 0) {
6271: my $server = shift(@homeservers);
6272: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
6273: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
6274: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
6275: split(/:/,$response);
6276: %{$codes} = (%{$codes},&str2hash($codes_str));
6277: push(@{$codetitles},&str2array($codetitles_str));
6278: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
6279: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
6280: $ok_response = 1;
6281: }
6282: }
6283: if ($ok_response) {
6284: return 'ok';
6285: } else {
6286: return $response;
6287: }
6288: }
6289:
6290: sub auto_instcode_defaults {
6291: my ($domain,$returnhash,$code_order) = @_;
6292: my @homeservers;
6293:
6294: my %servers = &get_servers($domain,'library');
6295: foreach my $tryserver (keys(%servers)) {
6296: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6297: push(@homeservers,$tryserver);
6298: }
6299: }
6300:
6301: my $response;
6302: foreach my $server (@homeservers) {
6303: $response=&reply('autoinstcodedefaults:'.$domain,$server);
6304: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6305:
6306: foreach my $pair (split(/\&/,$response)) {
6307: my ($name,$value)=split(/\=/,$pair);
6308: if ($name eq 'code_order') {
6309: @{$code_order} = split(/\&/,&unescape($value));
6310: } else {
6311: $returnhash->{&unescape($name)}=&unescape($value);
6312: }
6313: }
6314: return 'ok';
6315: }
6316:
6317: return $response;
6318: }
6319:
6320: sub auto_possible_instcodes {
6321: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
6322: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
6323: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
6324: return;
6325: }
6326: my (@homeservers,$uhome);
6327: if (defined(&domain($domain,'primary'))) {
6328: $uhome=&domain($domain,'primary');
6329: push(@homeservers,&domain($domain,'primary'));
6330: } else {
6331: my %servers = &get_servers($domain,'library');
6332: foreach my $tryserver (keys(%servers)) {
6333: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
6334: push(@homeservers,$tryserver);
6335: }
6336: }
6337: }
6338: my $response;
6339: foreach my $server (@homeservers) {
6340: $response=&reply('autopossibleinstcodes:'.$domain,$server);
6341: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
6342: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
6343: split(':',$response);
6344: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
6345: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
6346: foreach my $item (split('&',$cat_title)) {
6347: my ($name,$value)=split('=',$item);
6348: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
6349: }
6350: foreach my $item (split('&',$cat_order)) {
6351: my ($name,$value)=split('=',$item);
6352: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
6353: }
6354: return 'ok';
6355: }
6356: return $response;
6357: }
6358:
6359: sub auto_courserequest_checks {
6360: my ($dom) = @_;
6361: my ($homeserver,%validations);
6362: if ($dom =~ /^$match_domain$/) {
6363: $homeserver = &domain($dom,'primary');
6364: }
6365: unless ($homeserver eq 'no_host') {
6366: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
6367: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
6368: my @items = split(/&/,$response);
6369: foreach my $item (@items) {
6370: my ($key,$value) = split('=',$item);
6371: $validations{&unescape($key)} = &thaw_unescape($value);
6372: }
6373: }
6374: }
6375: return %validations;
6376: }
6377:
6378: sub auto_courserequest_validation {
6379: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
6380: my ($homeserver,$response);
6381: if ($dom =~ /^$match_domain$/) {
6382: $homeserver = &domain($dom,'primary');
6383: }
6384: unless ($homeserver eq 'no_host') {
6385:
6386: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
6387: ':'.&escape($crstype).':'.&escape($inststatuslist).
6388: ':'.&escape($instcode).':'.&escape($instseclist),
6389: $homeserver));
6390: }
6391: return $response;
6392: }
6393:
6394: sub auto_validate_class_sec {
6395: my ($cdom,$cnum,$owners,$inst_class) = @_;
6396: my $homeserver = &homeserver($cnum,$cdom);
6397: my $ownerlist;
6398: if (ref($owners) eq 'ARRAY') {
6399: $ownerlist = join(',',@{$owners});
6400: } else {
6401: $ownerlist = $owners;
6402: }
6403: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
6404: &escape($ownerlist).':'.$cdom,$homeserver);
6405: return $response;
6406: }
6407:
6408: # ------------------------------------------------------- Course Group routines
6409:
6410: sub get_coursegroups {
6411: my ($cdom,$cnum,$group,$namespace) = @_;
6412: return(&dump($namespace,$cdom,$cnum,$group));
6413: }
6414:
6415: sub modify_coursegroup {
6416: my ($cdom,$cnum,$groupsettings) = @_;
6417: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
6418: }
6419:
6420: sub toggle_coursegroup_status {
6421: my ($cdom,$cnum,$group,$action) = @_;
6422: my ($from_namespace,$to_namespace);
6423: if ($action eq 'delete') {
6424: $from_namespace = 'coursegroups';
6425: $to_namespace = 'deleted_groups';
6426: } else {
6427: $from_namespace = 'deleted_groups';
6428: $to_namespace = 'coursegroups';
6429: }
6430: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
6431: if (my $tmp = &error(%curr_group)) {
6432: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
6433: return ('read error',$tmp);
6434: } else {
6435: my %savedsettings = %curr_group;
6436: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
6437: my $deloutcome;
6438: if ($result eq 'ok') {
6439: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
6440: } else {
6441: return ('write error',$result);
6442: }
6443: if ($deloutcome eq 'ok') {
6444: return 'ok';
6445: } else {
6446: return ('delete error',$deloutcome);
6447: }
6448: }
6449: }
6450:
6451: sub modify_group_roles {
6452: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
6453: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
6454: my $role = 'gr/'.&escape($userprivs);
6455: my ($uname,$udom) = split(/:/,$user);
6456: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
6457: if ($result eq 'ok') {
6458: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
6459: }
6460: return $result;
6461: }
6462:
6463: sub modify_coursegroup_membership {
6464: my ($cdom,$cnum,$membership) = @_;
6465: my $result = &put('groupmembership',$membership,$cdom,$cnum);
6466: return $result;
6467: }
6468:
6469: sub get_active_groups {
6470: my ($udom,$uname,$cdom,$cnum) = @_;
6471: my $now = time;
6472: my %groups = ();
6473: foreach my $key (keys(%env)) {
6474: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
6475: my ($start,$end) = split(/\./,$env{$key});
6476: if (($end!=0) && ($end<$now)) { next; }
6477: if (($start!=0) && ($start>$now)) { next; }
6478: if ($1 eq $cdom && $2 eq $cnum) {
6479: $groups{$3} = $env{$key} ;
6480: }
6481: }
6482: }
6483: return %groups;
6484: }
6485:
6486: sub get_group_membership {
6487: my ($cdom,$cnum,$group) = @_;
6488: return(&dump('groupmembership',$cdom,$cnum,$group));
6489: }
6490:
6491: sub get_users_groups {
6492: my ($udom,$uname,$courseid) = @_;
6493: my @usersgroups;
6494: my $cachetime=1800;
6495:
6496: my $hashid="$udom:$uname:$courseid";
6497: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
6498: if (defined($cached)) {
6499: @usersgroups = split(/:/,$grouplist);
6500: } else {
6501: $grouplist = '';
6502: my $courseurl = &courseid_to_courseurl($courseid);
6503: my $extra = &freeze_escape({'skipcheck' => 1});
6504: my %roleshash = &dump('roles',$udom,$uname,$courseurl,undef,$extra);
6505: my $access_end = $env{'course.'.$courseid.
6506: '.default_enrollment_end_date'};
6507: my $now = time;
6508: foreach my $key (keys(%roleshash)) {
6509: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
6510: my $group = $1;
6511: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
6512: my $start = $2;
6513: my $end = $1;
6514: if ($start == -1) { next; } # deleted from group
6515: if (($start!=0) && ($start>$now)) { next; }
6516: if (($end!=0) && ($end<$now)) {
6517: if ($access_end && $access_end < $now) {
6518: if ($access_end - $end < 86400) {
6519: push(@usersgroups,$group);
6520: }
6521: }
6522: next;
6523: }
6524: push(@usersgroups,$group);
6525: }
6526: }
6527: }
6528: @usersgroups = &sort_course_groups($courseid,@usersgroups);
6529: $grouplist = join(':',@usersgroups);
6530: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
6531: }
6532: return @usersgroups;
6533: }
6534:
6535: sub devalidate_getgroups_cache {
6536: my ($udom,$uname,$cdom,$cnum)=@_;
6537: my $courseid = $cdom.'_'.$cnum;
6538:
6539: my $hashid="$udom:$uname:$courseid";
6540: &devalidate_cache_new('getgroups',$hashid);
6541: }
6542:
6543: # ------------------------------------------------------------------ Plain Text
6544:
6545: sub plaintext {
6546: my ($short,$type,$cid,$forcedefault) = @_;
6547: if ($short =~ m{^cr/}) {
6548: return (split('/',$short))[-1];
6549: }
6550: if (!defined($cid)) {
6551: $cid = $env{'request.course.id'};
6552: }
6553: my %rolenames = (
6554: Course => 'std',
6555: Community => 'alt1',
6556: );
6557: if ($cid ne '') {
6558: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
6559: unless ($forcedefault) {
6560: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
6561: &Apache::lonlocal::mt_escape(\$roletext);
6562: return &Apache::lonlocal::mt($roletext);
6563: }
6564: }
6565: }
6566: if ((defined($type)) && (defined($rolenames{$type})) &&
6567: (defined($rolenames{$type})) &&
6568: (defined($prp{$short}{$rolenames{$type}}))) {
6569: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
6570: } elsif ($cid ne '') {
6571: my $crstype = $env{'course.'.$cid.'.type'};
6572: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
6573: (defined($prp{$short}{$rolenames{$crstype}}))) {
6574: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
6575: }
6576: }
6577: return &Apache::lonlocal::mt($prp{$short}{'std'});
6578: }
6579:
6580: # ----------------------------------------------------------------- Assign Role
6581:
6582: sub assignrole {
6583: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
6584: $context)=@_;
6585: my $mrole;
6586: if ($role =~ /^cr\//) {
6587: my $cwosec=$url;
6588: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6589: unless (&allowed('ccr',$cwosec)) {
6590: my $refused = 1;
6591: if ($context eq 'requestcourses') {
6592: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
6593: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
6594: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
6595: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6596: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6597: if ($crsenv{'internal.courseowner'} eq
6598: $env{'user.name'}.':'.$env{'user.domain'}) {
6599: $refused = '';
6600: }
6601: }
6602: }
6603: }
6604: }
6605: if ($refused) {
6606: &logthis('Refused custom assignrole: '.
6607: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
6608: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
6609: return 'refused';
6610: }
6611: }
6612: $mrole='cr';
6613: } elsif ($role =~ /^gr\//) {
6614: my $cwogrp=$url;
6615: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
6616: unless (&allowed('mdg',$cwogrp)) {
6617: &logthis('Refused group assignrole: '.
6618: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
6619: $env{'user.name'}.' at '.$env{'user.domain'});
6620: return 'refused';
6621: }
6622: $mrole='gr';
6623: } else {
6624: my $cwosec=$url;
6625: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
6626: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
6627: my $refused;
6628: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
6629: if (!(&allowed('c'.$role,$url))) {
6630: $refused = 1;
6631: }
6632: } else {
6633: $refused = 1;
6634: }
6635: if ($refused) {
6636: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
6637: if (!$selfenroll && $context eq 'course') {
6638: my %crsenv;
6639: if ($role eq 'cc' || $role eq 'co') {
6640: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6641: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
6642: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
6643: if ($crsenv{'internal.courseowner'} eq
6644: $env{'user.name'}.':'.$env{'user.domain'}) {
6645: $refused = '';
6646: }
6647: }
6648: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
6649: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
6650: if ($crsenv{'internal.courseowner'} eq
6651: $env{'user.name'}.':'.$env{'user.domain'}) {
6652: $refused = '';
6653: }
6654: }
6655: }
6656: }
6657: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6658: $refused = '';
6659: } elsif ($context eq 'requestcourses') {
6660: my @possroles = ('st','ta','ep','in','cc','co');
6661: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
6662: my $wrongcc;
6663: if ($cnum =~ /^$match_community$/) {
6664: $wrongcc = 1 if ($role eq 'cc');
6665: } else {
6666: $wrongcc = 1 if ($role eq 'co');
6667: }
6668: unless ($wrongcc) {
6669: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
6670: if ($crsenv{'internal.courseowner'} eq
6671: $env{'user.name'}.':'.$env{'user.domain'}) {
6672: $refused = '';
6673: }
6674: }
6675: }
6676: }
6677: if ($refused) {
6678: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
6679: ' '.$role.' '.$end.' '.$start.' by '.
6680: $env{'user.name'}.' at '.$env{'user.domain'});
6681: return 'refused';
6682: }
6683: }
6684: }
6685: $mrole=$role;
6686: }
6687: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6688: "$udom:$uname:$url".'_'."$mrole=$role";
6689: if ($end) { $command.='_'.$end; }
6690: if ($start) {
6691: if ($end) {
6692: $command.='_'.$start;
6693: } else {
6694: $command.='_0_'.$start;
6695: }
6696: }
6697: my $origstart = $start;
6698: my $origend = $end;
6699: my $delflag;
6700: # actually delete
6701: if ($deleteflag) {
6702: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
6703: # modify command to delete the role
6704: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
6705: "$udom:$uname:$url".'_'."$mrole";
6706: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
6707: # set start and finish to negative values for userrolelog
6708: $start=-1;
6709: $end=-1;
6710: $delflag = 1;
6711: }
6712: }
6713: # send command
6714: my $answer=&reply($command,&homeserver($uname,$udom));
6715: # log new user role if status is ok
6716: if ($answer eq 'ok') {
6717: &userrolelog($role,$uname,$udom,$url,$start,$end);
6718: # for course roles, perform group memberships changes triggered by role change.
6719: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
6720: unless ($role =~ /^gr/) {
6721: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
6722: $origstart,$selfenroll,$context);
6723: }
6724: if ($role eq 'cc') {
6725: &autoupdate_coowners($url,$end,$start,$uname,$udom);
6726: }
6727: }
6728: return $answer;
6729: }
6730:
6731: sub autoupdate_coowners {
6732: my ($url,$end,$start,$uname,$udom) = @_;
6733: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
6734: if (($cdom ne '') && ($cnum ne '')) {
6735: my $now = time;
6736: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
6737: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
6738: my %coursehash = &coursedescription($cdom.'_'.$cnum);
6739: my $instcode = $coursehash{'internal.coursecode'};
6740: if ($instcode ne '') {
6741: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
6742: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
6743: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
6744: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
6745: if ($result eq 'valid') {
6746: if ($coursehash{'internal.co-owners'}) {
6747: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6748: push(@newcoowners,$coowner);
6749: }
6750: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
6751: push(@newcoowners,$uname.':'.$udom);
6752: }
6753: @newcoowners = sort(@newcoowners);
6754: } else {
6755: push(@newcoowners,$uname.':'.$udom);
6756: }
6757: } else {
6758: if ($coursehash{'internal.co-owners'}) {
6759: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
6760: unless ($coowner eq $uname.':'.$udom) {
6761: push(@newcoowners,$coowner);
6762: }
6763: }
6764: unless (@newcoowners > 0) {
6765: $delcoowners = 1;
6766: $coowners = '';
6767: }
6768: }
6769: }
6770: if (@newcoowners || $delcoowners) {
6771: &store_coowners($cdom,$cnum,$coursehash{'home'},
6772: $delcoowners,@newcoowners);
6773: }
6774: }
6775: }
6776: }
6777: }
6778: }
6779: }
6780:
6781: sub store_coowners {
6782: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
6783: my $cid = $cdom.'_'.$cnum;
6784: my ($coowners,$delresult,$putresult);
6785: if (@newcoowners) {
6786: $coowners = join(',',@newcoowners);
6787: my %coownershash = (
6788: 'internal.co-owners' => $coowners,
6789: );
6790: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
6791: if ($putresult eq 'ok') {
6792: if ($env{'course.'.$cid.'.num'} eq $cnum) {
6793: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
6794: }
6795: }
6796: }
6797: if ($delcoowners) {
6798: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
6799: if ($delresult eq 'ok') {
6800: if ($env{'course.'.$cid.'.internal.co-owners'}) {
6801: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
6802: }
6803: }
6804: }
6805: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
6806: my %crsinfo =
6807: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6808: if (ref($crsinfo{$cid}) eq 'HASH') {
6809: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
6810: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
6811: }
6812: }
6813: }
6814:
6815: # -------------------------------------------------- Modify user authentication
6816: # Overrides without validation
6817:
6818: sub modifyuserauth {
6819: my ($udom,$uname,$umode,$upass)=@_;
6820: my $uhome=&homeserver($uname,$udom);
6821: unless (&allowed('mau',$udom)) { return 'refused'; }
6822: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
6823: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6824: ' in domain '.$env{'request.role.domain'});
6825: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
6826: &escape($upass),$uhome);
6827: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
6828: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
6829: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6830: &log($udom,,$uname,$uhome,
6831: 'Authentication changed by '.$env{'user.domain'}.', '.
6832: $env{'user.name'}.', '.$umode.
6833: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
6834: unless ($reply eq 'ok') {
6835: &logthis('Authentication mode error: '.$reply);
6836: return 'error: '.$reply;
6837: }
6838: return 'ok';
6839: }
6840:
6841: # --------------------------------------------------------------- Modify a user
6842:
6843: sub modifyuser {
6844: my ($udom, $uname, $uid,
6845: $umode, $upass, $first,
6846: $middle, $last, $gene,
6847: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
6848: $udom= &LONCAPA::clean_domain($udom);
6849: $uname=&LONCAPA::clean_username($uname);
6850: my $showcandelete = 'none';
6851: if (ref($candelete) eq 'ARRAY') {
6852: if (@{$candelete} > 0) {
6853: $showcandelete = join(', ',@{$candelete});
6854: }
6855: }
6856: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
6857: $umode.', '.$first.', '.$middle.', '.
6858: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
6859: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
6860: ' desiredhome not specified').
6861: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
6862: ' in domain '.$env{'request.role.domain'});
6863: my $uhome=&homeserver($uname,$udom,'true');
6864: my $newuser;
6865: if ($uhome eq 'no_host') {
6866: $newuser = 1;
6867: }
6868: # ----------------------------------------------------------------- Create User
6869: if (($uhome eq 'no_host') &&
6870: (($umode && $upass) || ($umode eq 'localauth'))) {
6871: my $unhome='';
6872: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
6873: $unhome = $desiredhome;
6874: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
6875: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
6876: } else { # load balancing routine for determining $unhome
6877: my $loadm=10000000;
6878: my %servers = &get_servers($udom,'library');
6879: foreach my $tryserver (keys(%servers)) {
6880: my $answer=reply('load',$tryserver);
6881: if (($answer=~/\d+/) && ($answer<$loadm)) {
6882: $loadm=$answer;
6883: $unhome=$tryserver;
6884: }
6885: }
6886: }
6887: if (($unhome eq '') || ($unhome eq 'no_host')) {
6888: return 'error: unable to find a home server for '.$uname.
6889: ' in domain '.$udom;
6890: }
6891: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
6892: &escape($upass),$unhome);
6893: unless ($reply eq 'ok') {
6894: return 'error: '.$reply;
6895: }
6896: $uhome=&homeserver($uname,$udom,'true');
6897: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
6898: return 'error: unable verify users home machine.';
6899: }
6900: } # End of creation of new user
6901: # ---------------------------------------------------------------------- Add ID
6902: if ($uid) {
6903: $uid=~tr/A-Z/a-z/;
6904: my %uidhash=&idrget($udom,$uname);
6905: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
6906: && (!$forceid)) {
6907: unless ($uid eq $uidhash{$uname}) {
6908: return 'error: user id "'.$uid.'" does not match '.
6909: 'current user id "'.$uidhash{$uname}.'".';
6910: }
6911: } else {
6912: &idput($udom,($uname => $uid));
6913: }
6914: }
6915: # -------------------------------------------------------------- Add names, etc
6916: my @tmp=&get('environment',
6917: ['firstname','middlename','lastname','generation','id',
6918: 'permanentemail','inststatus'],
6919: $udom,$uname);
6920: my (%names,%oldnames);
6921: if ($tmp[0] =~ m/^error:.*/) {
6922: %names=();
6923: } else {
6924: %names = @tmp;
6925: %oldnames = %names;
6926: }
6927: #
6928: # If name, email and/or uid are blank (e.g., because an uploaded file
6929: # of users did not contain them), do not overwrite existing values
6930: # unless field is in $candelete array ref.
6931: #
6932:
6933: my @fields = ('firstname','middlename','lastname','generation',
6934: 'permanentemail','id');
6935: my %newvalues;
6936: if (ref($candelete) eq 'ARRAY') {
6937: foreach my $field (@fields) {
6938: if (grep(/^\Q$field\E$/,@{$candelete})) {
6939: if ($field eq 'firstname') {
6940: $names{$field} = $first;
6941: } elsif ($field eq 'middlename') {
6942: $names{$field} = $middle;
6943: } elsif ($field eq 'lastname') {
6944: $names{$field} = $last;
6945: } elsif ($field eq 'generation') {
6946: $names{$field} = $gene;
6947: } elsif ($field eq 'permanentemail') {
6948: $names{$field} = $email;
6949: } elsif ($field eq 'id') {
6950: $names{$field} = $uid;
6951: }
6952: }
6953: }
6954: }
6955: if ($first) { $names{'firstname'} = $first; }
6956: if (defined($middle)) { $names{'middlename'} = $middle; }
6957: if ($last) { $names{'lastname'} = $last; }
6958: if (defined($gene)) { $names{'generation'} = $gene; }
6959: if ($email) {
6960: $email=~s/[^\w\@\.\-\,]//gs;
6961: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
6962: }
6963: if ($uid) { $names{'id'} = $uid; }
6964: if (defined($inststatus)) {
6965: $names{'inststatus'} = '';
6966: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
6967: if (ref($usertypes) eq 'HASH') {
6968: my @okstatuses;
6969: foreach my $item (split(/:/,$inststatus)) {
6970: if (defined($usertypes->{$item})) {
6971: push(@okstatuses,$item);
6972: }
6973: }
6974: if (@okstatuses) {
6975: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
6976: }
6977: }
6978: }
6979: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
6980: $umode.', '.$first.', '.$middle.', '.
6981: $last.', '.$gene.', '.$email.', '.$inststatus;
6982: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
6983: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
6984: } else {
6985: $logmsg .= ' during self creation';
6986: }
6987: my $changed;
6988: if ($newuser) {
6989: $changed = 1;
6990: } else {
6991: foreach my $field (@fields) {
6992: if ($names{$field} ne $oldnames{$field}) {
6993: $changed = 1;
6994: last;
6995: }
6996: }
6997: }
6998: unless ($changed) {
6999: $logmsg = 'No changes in user information needed for: '.$logmsg;
7000: &logthis($logmsg);
7001: return 'ok';
7002: }
7003: my $reply = &put('environment', \%names, $udom,$uname);
7004: if ($reply ne 'ok') {
7005: return 'error: '.$reply;
7006: }
7007: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7008: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7009: }
7010: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7011: &devalidate_cache_new('namescache',$uname.':'.$udom);
7012: $logmsg = 'Success modifying user '.$logmsg;
7013: &logthis($logmsg);
7014: return 'ok';
7015: }
7016:
7017: # -------------------------------------------------------------- Modify student
7018:
7019: sub modifystudent {
7020: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7021: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7022: $selfenroll,$context,$inststatus)=@_;
7023: if (!$cid) {
7024: unless ($cid=$env{'request.course.id'}) {
7025: return 'not_in_class';
7026: }
7027: }
7028: # --------------------------------------------------------------- Make the user
7029: my $reply=&modifyuser
7030: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7031: $desiredhome,$email,$inststatus);
7032: unless ($reply eq 'ok') { return $reply; }
7033: # This will cause &modify_student_enrollment to get the uid from the
7034: # students environment
7035: $uid = undef if (!$forceid);
7036: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7037: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7038: return $reply;
7039: }
7040:
7041: sub modify_student_enrollment {
7042: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7043: my ($cdom,$cnum,$chome);
7044: if (!$cid) {
7045: unless ($cid=$env{'request.course.id'}) {
7046: return 'not_in_class';
7047: }
7048: $cdom=$env{'course.'.$cid.'.domain'};
7049: $cnum=$env{'course.'.$cid.'.num'};
7050: } else {
7051: ($cdom,$cnum)=split(/_/,$cid);
7052: }
7053: $chome=$env{'course.'.$cid.'.home'};
7054: if (!$chome) {
7055: $chome=&homeserver($cnum,$cdom);
7056: }
7057: if (!$chome) { return 'unknown_course'; }
7058: # Make sure the user exists
7059: my $uhome=&homeserver($uname,$udom);
7060: if (($uhome eq '') || ($uhome eq 'no_host')) {
7061: return 'error: no such user';
7062: }
7063: # Get student data if we were not given enough information
7064: if (!defined($first) || $first eq '' ||
7065: !defined($last) || $last eq '' ||
7066: !defined($uid) || $uid eq '' ||
7067: !defined($middle) || $middle eq '' ||
7068: !defined($gene) || $gene eq '') {
7069: # They did not supply us with enough data to enroll the student, so
7070: # we need to pick up more information.
7071: my %tmp = &get('environment',
7072: ['firstname','middlename','lastname', 'generation','id']
7073: ,$udom,$uname);
7074:
7075: #foreach my $key (keys(%tmp)) {
7076: # &logthis("key $key = ".$tmp{$key});
7077: #}
7078: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7079: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7080: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7081: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7082: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7083: }
7084: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7085: my $reply=cput('classlist',
7086: {"$uname:$udom" =>
7087: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7088: $cdom,$cnum);
7089: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
7090: return 'error: '.$reply;
7091: } else {
7092: &devalidate_getsection_cache($udom,$uname,$cid);
7093: }
7094: # Add student role to user
7095: my $uurl='/'.$cid;
7096: $uurl=~s/\_/\//g;
7097: if ($usec) {
7098: $uurl.='/'.$usec;
7099: }
7100: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
7101: }
7102:
7103: sub format_name {
7104: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7105: my $name;
7106: if ($first ne 'lastname') {
7107: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7108: } else {
7109: if ($lastname=~/\S/) {
7110: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7111: $name=~s/\s+,/,/;
7112: } else {
7113: $name.= $firstname.' '.$middlename.' '.$generation;
7114: }
7115: }
7116: $name=~s/^\s+//;
7117: $name=~s/\s+$//;
7118: $name=~s/\s+/ /g;
7119: return $name;
7120: }
7121:
7122: # ------------------------------------------------- Write to course preferences
7123:
7124: sub writecoursepref {
7125: my ($courseid,%prefs)=@_;
7126: $courseid=~s/^\///;
7127: $courseid=~s/\_/\//g;
7128: my ($cdomain,$cnum)=split(/\//,$courseid);
7129: my $chome=homeserver($cnum,$cdomain);
7130: if (($chome eq '') || ($chome eq 'no_host')) {
7131: return 'error: no such course';
7132: }
7133: my $cstring='';
7134: foreach my $pref (keys(%prefs)) {
7135: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7136: }
7137: $cstring=~s/\&$//;
7138: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7139: }
7140:
7141: # ---------------------------------------------------------- Make/modify course
7142:
7143: sub createcourse {
7144: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7145: $course_owner,$crstype,$cnum,$context,$category)=@_;
7146: $url=&declutter($url);
7147: my $cid='';
7148: if ($context eq 'requestcourses') {
7149: my $can_create = 0;
7150: my ($ownername,$ownerdom) = split(':',$course_owner);
7151: if ($udom eq $ownerdom) {
7152: if (&usertools_access($ownername,$ownerdom,$category,undef,
7153: $context)) {
7154: $can_create = 1;
7155: }
7156: } else {
7157: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
7158: $category);
7159: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
7160: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
7161: if (@curr > 0) {
7162: my @options = qw(approval validate autolimit);
7163: my $optregex = join('|',@options);
7164: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
7165: $can_create = 1;
7166: }
7167: }
7168: }
7169: }
7170: if ($can_create) {
7171: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
7172: unless (&allowed('ccc',$udom)) {
7173: return 'refused';
7174: }
7175: }
7176: } else {
7177: return 'refused';
7178: }
7179: } elsif (!&allowed('ccc',$udom)) {
7180: return 'refused';
7181: }
7182: # --------------------------------------------------------------- Get Unique ID
7183: my $uname;
7184: if ($cnum =~ /^$match_courseid$/) {
7185: my $chome=&homeserver($cnum,$udom,'true');
7186: if (($chome eq '') || ($chome eq 'no_host')) {
7187: $uname = $cnum;
7188: } else {
7189: $uname = &generate_coursenum($udom,$crstype);
7190: }
7191: } else {
7192: $uname = &generate_coursenum($udom,$crstype);
7193: }
7194: return $uname if ($uname =~ /^error/);
7195: # -------------------------------------------------- Check supplied server name
7196: if (!defined($course_server)) {
7197: if (defined(&domain($udom,'primary'))) {
7198: $course_server = &domain($udom,'primary');
7199: } else {
7200: $course_server = $env{'user.home'};
7201: }
7202: }
7203: my %host_servers =
7204: &Apache::lonnet::get_servers($udom,'library');
7205: unless ($host_servers{$course_server}) {
7206: return 'error: invalid home server for course: '.$course_server;
7207: }
7208: # ------------------------------------------------------------- Make the course
7209: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
7210: $course_server);
7211: unless ($reply eq 'ok') { return 'error: '.$reply; }
7212: my $uhome=&homeserver($uname,$udom,'true');
7213: if (($uhome eq '') || ($uhome eq 'no_host')) {
7214: return 'error: no such course';
7215: }
7216: # ----------------------------------------------------------------- Course made
7217: # log existence
7218: my $now = time;
7219: my $newcourse = {
7220: $udom.'_'.$uname => {
7221: description => $description,
7222: inst_code => $inst_code,
7223: owner => $course_owner,
7224: type => $crstype,
7225: creator => $env{'user.name'}.':'.
7226: $env{'user.domain'},
7227: created => $now,
7228: context => $context,
7229: },
7230: };
7231: &courseidput($udom,$newcourse,$uhome,'notime');
7232: # set toplevel url
7233: my $topurl=$url;
7234: unless ($nonstandard) {
7235: # ------------------------------------------ For standard courses, make top url
7236: my $mapurl=&clutter($url);
7237: if ($mapurl eq '/res/') { $mapurl=''; }
7238: $env{'form.initmap'}=(<<ENDINITMAP);
7239: <map>
7240: <resource id="1" type="start"></resource>
7241: <resource id="2" src="$mapurl"></resource>
7242: <resource id="3" type="finish"></resource>
7243: <link index="1" from="1" to="2"></link>
7244: <link index="2" from="2" to="3"></link>
7245: </map>
7246: ENDINITMAP
7247: $topurl=&declutter(
7248: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
7249: );
7250: }
7251: # ----------------------------------------------------------- Write preferences
7252: &writecoursepref($udom.'_'.$uname,
7253: ('description' => $description,
7254: 'url' => $topurl,
7255: 'internal.creator' => $env{'user.name'}.':'.
7256: $env{'user.domain'},
7257: 'internal.created' => $now,
7258: 'internal.creationcontext' => $context)
7259: );
7260: return '/'.$udom.'/'.$uname;
7261: }
7262:
7263: # ------------------------------------------------------------------- Create ID
7264: sub generate_coursenum {
7265: my ($udom,$crstype) = @_;
7266: my $domdesc = &domain($udom);
7267: return 'error: invalid domain' if ($domdesc eq '');
7268: my $first;
7269: if ($crstype eq 'Community') {
7270: $first = '0';
7271: } else {
7272: $first = int(1+rand(9));
7273: }
7274: my $uname=$first.
7275: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7276: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7277: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7278: # ----------------------------------------------- Make sure that does not exist
7279: my $uhome=&homeserver($uname,$udom,'true');
7280: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7281: if ($crstype eq 'Community') {
7282: $first = '0';
7283: } else {
7284: $first = int(1+rand(9));
7285: }
7286: $uname=$first.
7287: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
7288: substr($$.time,0,5).unpack("H8",pack("I32",time)).
7289: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
7290: $uhome=&homeserver($uname,$udom,'true');
7291: unless (($uhome eq '') || ($uhome eq 'no_host')) {
7292: return 'error: unable to generate unique course-ID';
7293: }
7294: }
7295: return $uname;
7296: }
7297:
7298: sub is_course {
7299: my ($cdom,$cnum) = @_;
7300: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
7301: undef,'.');
7302: if (exists($courses{$cdom.'_'.$cnum})) {
7303: return 1;
7304: }
7305: return 0;
7306: }
7307:
7308: sub store_userdata {
7309: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
7310: my $result;
7311: if ($datakey ne '') {
7312: if (ref($storehash) eq 'HASH') {
7313: if ($udom eq '' || $uname eq '') {
7314: $udom = $env{'user.domain'};
7315: $uname = $env{'user.name'};
7316: }
7317: my $uhome=&homeserver($uname,$udom);
7318: if (($uhome eq '') || ($uhome eq 'no_host')) {
7319: $result = 'error: no_host';
7320: } else {
7321: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
7322: $storehash->{'host'} = $perlvar{'lonHostID'};
7323:
7324: my $namevalue='';
7325: foreach my $key (keys(%{$storehash})) {
7326: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7327: }
7328: $namevalue=~s/\&$//;
7329: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
7330: $namevalue,$uhome);
7331: }
7332: } else {
7333: $result = 'error: data to store was not a hash reference';
7334: }
7335: } else {
7336: $result= 'error: invalid requestkey';
7337: }
7338: return $result;
7339: }
7340:
7341: # ---------------------------------------------------------- Assign Custom Role
7342:
7343: sub assigncustomrole {
7344: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
7345: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
7346: $end,$start,$deleteflag,$selfenroll,$context);
7347: }
7348:
7349: # ----------------------------------------------------------------- Revoke Role
7350:
7351: sub revokerole {
7352: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
7353: my $now=time;
7354: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
7355: }
7356:
7357: # ---------------------------------------------------------- Revoke Custom Role
7358:
7359: sub revokecustomrole {
7360: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
7361: my $now=time;
7362: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
7363: $deleteflag,$selfenroll,$context);
7364: }
7365:
7366: # ------------------------------------------------------------ Disk usage
7367: sub diskusage {
7368: my ($udom,$uname,$directorypath,$getpropath)=@_;
7369: $directorypath =~ s/\/$//;
7370: my $listing=&reply('du2:'.&escape($directorypath).':'
7371: .&escape($getpropath).':'.&escape($uname).':'
7372: .&escape($udom),homeserver($uname,$udom));
7373: if ($listing eq 'unknown_cmd') {
7374: if ($getpropath) {
7375: $directorypath = &propath($udom,$uname).'/'.$directorypath;
7376: }
7377: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
7378: }
7379: return $listing;
7380: }
7381:
7382: sub is_locked {
7383: my ($file_name, $domain, $user, $which) = @_;
7384: my @check;
7385: my $is_locked;
7386: push (@check,$file_name);
7387: my %locked = &get('file_permissions',\@check,
7388: $env{'user.domain'},$env{'user.name'});
7389: my ($tmp)=keys(%locked);
7390: if ($tmp=~/^error:/) { undef(%locked); }
7391:
7392: if (ref($locked{$file_name}) eq 'ARRAY') {
7393: $is_locked = 'false';
7394: foreach my $entry (@{$locked{$file_name}}) {
7395: if (ref($entry) eq 'ARRAY') {
7396: $is_locked = 'true';
7397: if (ref($which) eq 'ARRAY') {
7398: push(@{$which},$entry);
7399: } else {
7400: last;
7401: }
7402: }
7403: }
7404: } else {
7405: $is_locked = 'false';
7406: }
7407: return $is_locked;
7408: }
7409:
7410: sub declutter_portfile {
7411: my ($file) = @_;
7412: $file =~ s{^(/portfolio/|portfolio/)}{/};
7413: return $file;
7414: }
7415:
7416: # ------------------------------------------------------------- Mark as Read Only
7417:
7418: sub mark_as_readonly {
7419: my ($domain,$user,$files,$what) = @_;
7420: my %current_permissions = &dump('file_permissions',$domain,$user);
7421: my ($tmp)=keys(%current_permissions);
7422: if ($tmp=~/^error:/) { undef(%current_permissions); }
7423: foreach my $file (@{$files}) {
7424: $file = &declutter_portfile($file);
7425: push(@{$current_permissions{$file}},$what);
7426: }
7427: &put('file_permissions',\%current_permissions,$domain,$user);
7428: return;
7429: }
7430:
7431: # ------------------------------------------------------------Save Selected Files
7432:
7433: sub save_selected_files {
7434: my ($user, $path, @files) = @_;
7435: my $filename = $user."savedfiles";
7436: my @other_files = &files_not_in_path($user, $path);
7437: open (OUT, '>'.$tmpdir.$filename);
7438: foreach my $file (@files) {
7439: print (OUT $env{'form.currentpath'}.$file."\n");
7440: }
7441: foreach my $file (@other_files) {
7442: print (OUT $file."\n");
7443: }
7444: close (OUT);
7445: return 'ok';
7446: }
7447:
7448: sub clear_selected_files {
7449: my ($user) = @_;
7450: my $filename = $user."savedfiles";
7451: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7452: print (OUT undef);
7453: close (OUT);
7454: return ("ok");
7455: }
7456:
7457: sub files_in_path {
7458: my ($user, $path) = @_;
7459: my $filename = $user."savedfiles";
7460: my %return_files;
7461: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7462: while (my $line_in = <IN>) {
7463: chomp ($line_in);
7464: my @paths_and_file = split (m!/!, $line_in);
7465: my $file_part = pop (@paths_and_file);
7466: my $path_part = join ('/', @paths_and_file);
7467: $path_part.='/';
7468: my $path_and_file = $path_part.$file_part;
7469: if ($path_part eq $path) {
7470: $return_files{$file_part}= 'selected';
7471: }
7472: }
7473: close (IN);
7474: return (\%return_files);
7475: }
7476:
7477: # called in portfolio select mode, to show files selected NOT in current directory
7478: sub files_not_in_path {
7479: my ($user, $path) = @_;
7480: my $filename = $user."savedfiles";
7481: my @return_files;
7482: my $path_part;
7483: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
7484: while (my $line = <IN>) {
7485: #ok, I know it's clunky, but I want it to work
7486: my @paths_and_file = split(m|/|, $line);
7487: my $file_part = pop(@paths_and_file);
7488: chomp($file_part);
7489: my $path_part = join('/', @paths_and_file);
7490: $path_part .= '/';
7491: my $path_and_file = $path_part.$file_part;
7492: if ($path_part ne $path) {
7493: push(@return_files, ($path_and_file));
7494: }
7495: }
7496: close(OUT);
7497: return (@return_files);
7498: }
7499:
7500: #----------------------------------------------Get portfolio file permissions
7501:
7502: sub get_portfile_permissions {
7503: my ($domain,$user) = @_;
7504: my %current_permissions = &dump('file_permissions',$domain,$user);
7505: my ($tmp)=keys(%current_permissions);
7506: if ($tmp=~/^error:/) { undef(%current_permissions); }
7507: return \%current_permissions;
7508: }
7509:
7510: #---------------------------------------------Get portfolio file access controls
7511:
7512: sub get_access_controls {
7513: my ($current_permissions,$group,$file) = @_;
7514: my %access;
7515: my $real_file = $file;
7516: $file =~ s/\.meta$//;
7517: if (defined($file)) {
7518: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
7519: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
7520: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
7521: }
7522: }
7523: } else {
7524: foreach my $key (keys(%{$current_permissions})) {
7525: if ($key =~ /\0accesscontrol$/) {
7526: if (defined($group)) {
7527: if ($key !~ m-^\Q$group\E/-) {
7528: next;
7529: }
7530: }
7531: my ($fullpath) = split(/\0/,$key);
7532: if (ref($$current_permissions{$key}) eq 'HASH') {
7533: foreach my $control (keys(%{$$current_permissions{$key}})) {
7534: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
7535: }
7536: }
7537: }
7538: }
7539: }
7540: return %access;
7541: }
7542:
7543: sub modify_access_controls {
7544: my ($file_name,$changes,$domain,$user)=@_;
7545: my ($outcome,$deloutcome);
7546: my %store_permissions;
7547: my %new_values;
7548: my %new_control;
7549: my %translation;
7550: my @deletions = ();
7551: my $now = time;
7552: if (exists($$changes{'activate'})) {
7553: if (ref($$changes{'activate'}) eq 'HASH') {
7554: my @newitems = sort(keys(%{$$changes{'activate'}}));
7555: my $numnew = scalar(@newitems);
7556: for (my $i=0; $i<$numnew; $i++) {
7557: my $newkey = $newitems[$i];
7558: my $newid = &Apache::loncommon::get_cgi_id();
7559: if ($newkey =~ /^\d+:/) {
7560: $newkey =~ s/^(\d+)/$newid/;
7561: $translation{$1} = $newid;
7562: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
7563: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
7564: $translation{$1} = $newid;
7565: }
7566: $new_values{$file_name."\0".$newkey} =
7567: $$changes{'activate'}{$newitems[$i]};
7568: $new_control{$newkey} = $now;
7569: }
7570: }
7571: }
7572: my %todelete;
7573: my %changed_items;
7574: foreach my $action ('delete','update') {
7575: if (exists($$changes{$action})) {
7576: if (ref($$changes{$action}) eq 'HASH') {
7577: foreach my $key (keys(%{$$changes{$action}})) {
7578: my ($itemnum) = ($key =~ /^([^:]+):/);
7579: if ($action eq 'delete') {
7580: $todelete{$itemnum} = 1;
7581: } else {
7582: $changed_items{$itemnum} = $key;
7583: }
7584: }
7585: }
7586: }
7587: }
7588: # get lock on access controls for file.
7589: my $lockhash = {
7590: $file_name."\0".'locked_access_records' => $env{'user.name'}.
7591: ':'.$env{'user.domain'},
7592: };
7593: my $tries = 0;
7594: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7595:
7596: while (($gotlock ne 'ok') && $tries <3) {
7597: $tries ++;
7598: sleep 1;
7599: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
7600: }
7601: if ($gotlock eq 'ok') {
7602: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
7603: my ($tmp)=keys(%curr_permissions);
7604: if ($tmp=~/^error:/) { undef(%curr_permissions); }
7605: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
7606: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
7607: if (ref($curr_controls) eq 'HASH') {
7608: foreach my $control_item (keys(%{$curr_controls})) {
7609: my ($itemnum) = ($control_item =~ /^([^:]+):/);
7610: if (defined($todelete{$itemnum})) {
7611: push(@deletions,$file_name."\0".$control_item);
7612: } else {
7613: if (defined($changed_items{$itemnum})) {
7614: $new_control{$changed_items{$itemnum}} = $now;
7615: push(@deletions,$file_name."\0".$control_item);
7616: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
7617: } else {
7618: $new_control{$control_item} = $$curr_controls{$control_item};
7619: }
7620: }
7621: }
7622: }
7623: }
7624: my ($group);
7625: if (&is_course($domain,$user)) {
7626: ($group,my $file) = split(/\//,$file_name,2);
7627: }
7628: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
7629: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
7630: $outcome = &put('file_permissions',\%new_values,$domain,$user);
7631: # remove lock
7632: my @del_lock = ($file_name."\0".'locked_access_records');
7633: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
7634: my $sqlresult =
7635: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
7636: $group);
7637: } else {
7638: $outcome = "error: could not obtain lockfile\n";
7639: }
7640: return ($outcome,$deloutcome,\%new_values,\%translation);
7641: }
7642:
7643: sub make_public_indefinitely {
7644: my ($requrl) = @_;
7645: my $now = time;
7646: my $action = 'activate';
7647: my $aclnum = 0;
7648: if (&is_portfolio_url($requrl)) {
7649: my (undef,$udom,$unum,$file_name,$group) =
7650: &parse_portfolio_url($requrl);
7651: my $current_perms = &get_portfile_permissions($udom,$unum);
7652: my %access_controls = &get_access_controls($current_perms,
7653: $group,$file_name);
7654: foreach my $key (keys(%{$access_controls{$file_name}})) {
7655: my ($num,$scope,$end,$start) =
7656: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7657: if ($scope eq 'public') {
7658: if ($start <= $now && $end == 0) {
7659: $action = 'none';
7660: } else {
7661: $action = 'update';
7662: $aclnum = $num;
7663: }
7664: last;
7665: }
7666: }
7667: if ($action eq 'none') {
7668: return 'ok';
7669: } else {
7670: my %changes;
7671: my $newend = 0;
7672: my $newstart = $now;
7673: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
7674: $changes{$action}{$newkey} = {
7675: type => 'public',
7676: time => {
7677: start => $newstart,
7678: end => $newend,
7679: },
7680: };
7681: my ($outcome,$deloutcome,$new_values,$translation) =
7682: &modify_access_controls($file_name,\%changes,$udom,$unum);
7683: return $outcome;
7684: }
7685: } else {
7686: return 'invalid';
7687: }
7688: }
7689:
7690: #------------------------------------------------------Get Marked as Read Only
7691:
7692: sub get_marked_as_readonly {
7693: my ($domain,$user,$what,$group) = @_;
7694: my $current_permissions = &get_portfile_permissions($domain,$user);
7695: my @readonly_files;
7696: my $cmp1=$what;
7697: if (ref($what)) { $cmp1=join('',@{$what}) };
7698: while (my ($file_name,$value) = each(%{$current_permissions})) {
7699: if (defined($group)) {
7700: if ($file_name !~ m-^\Q$group\E/-) {
7701: next;
7702: }
7703: }
7704: if (ref($value) eq "ARRAY"){
7705: foreach my $stored_what (@{$value}) {
7706: my $cmp2=$stored_what;
7707: if (ref($stored_what) eq 'ARRAY') {
7708: $cmp2=join('',@{$stored_what});
7709: }
7710: if ($cmp1 eq $cmp2) {
7711: push(@readonly_files, $file_name);
7712: last;
7713: } elsif (!defined($what)) {
7714: push(@readonly_files, $file_name);
7715: last;
7716: }
7717: }
7718: }
7719: }
7720: return @readonly_files;
7721: }
7722: #-----------------------------------------------------------Get Marked as Read Only Hash
7723:
7724: sub get_marked_as_readonly_hash {
7725: my ($current_permissions,$group,$what) = @_;
7726: my %readonly_files;
7727: while (my ($file_name,$value) = each(%{$current_permissions})) {
7728: if (defined($group)) {
7729: if ($file_name !~ m-^\Q$group\E/-) {
7730: next;
7731: }
7732: }
7733: if (ref($value) eq "ARRAY"){
7734: foreach my $stored_what (@{$value}) {
7735: if (ref($stored_what) eq 'ARRAY') {
7736: foreach my $lock_descriptor(@{$stored_what}) {
7737: if ($lock_descriptor eq 'graded') {
7738: $readonly_files{$file_name} = 'graded';
7739: } elsif ($lock_descriptor eq 'handback') {
7740: $readonly_files{$file_name} = 'handback';
7741: } else {
7742: if (!exists($readonly_files{$file_name})) {
7743: $readonly_files{$file_name} = 'locked';
7744: }
7745: }
7746: }
7747: }
7748: }
7749: }
7750: }
7751: return %readonly_files;
7752: }
7753: # ------------------------------------------------------------ Unmark as Read Only
7754:
7755: sub unmark_as_readonly {
7756: # unmarks $file_name (if $file_name is defined), or all files locked by $what
7757: # for portfolio submissions, $what contains [$symb,$crsid]
7758: my ($domain,$user,$what,$file_name,$group) = @_;
7759: $file_name = &declutter_portfile($file_name);
7760: my $symb_crs = $what;
7761: if (ref($what)) { $symb_crs=join('',@$what); }
7762: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
7763: my ($tmp)=keys(%current_permissions);
7764: if ($tmp=~/^error:/) { undef(%current_permissions); }
7765: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
7766: foreach my $file (@readonly_files) {
7767: my $clean_file = &declutter_portfile($file);
7768: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
7769: my $current_locks = $current_permissions{$file};
7770: my @new_locks;
7771: my @del_keys;
7772: if (ref($current_locks) eq "ARRAY"){
7773: foreach my $locker (@{$current_locks}) {
7774: my $compare=$locker;
7775: if (ref($locker) eq 'ARRAY') {
7776: $compare=join('',@{$locker});
7777: if ($compare ne $symb_crs) {
7778: push(@new_locks, $locker);
7779: }
7780: }
7781: }
7782: if (scalar(@new_locks) > 0) {
7783: $current_permissions{$file} = \@new_locks;
7784: } else {
7785: push(@del_keys, $file);
7786: &del('file_permissions',\@del_keys, $domain, $user);
7787: delete($current_permissions{$file});
7788: }
7789: }
7790: }
7791: &put('file_permissions',\%current_permissions,$domain,$user);
7792: return;
7793: }
7794:
7795: # ------------------------------------------------------------ Directory lister
7796:
7797: sub dirlist {
7798: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
7799: $uri=~s/^\///;
7800: $uri=~s/\/$//;
7801: my ($udom, $uname);
7802: if ($getuserdir) {
7803: $udom = $userdomain;
7804: $uname = $username;
7805: } else {
7806: (undef,$udom,$uname)=split(/\//,$uri);
7807: if(defined($userdomain)) {
7808: $udom = $userdomain;
7809: }
7810: if(defined($username)) {
7811: $uname = $username;
7812: }
7813: }
7814: my ($dirRoot,$listing,@listing_results);
7815:
7816: $dirRoot = $perlvar{'lonDocRoot'};
7817: if (defined($getpropath)) {
7818: $dirRoot = &propath($udom,$uname);
7819: $dirRoot =~ s/\/$//;
7820: } elsif (defined($getuserdir)) {
7821: my $subdir=$uname.'__';
7822: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
7823: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
7824: ."/$udom/$subdir/$uname";
7825: } elsif (defined($alternateRoot)) {
7826: $dirRoot = $alternateRoot;
7827: }
7828:
7829: if($udom) {
7830: if($uname) {
7831: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
7832: .$getuserdir.':'.&escape($dirRoot)
7833: .':'.&escape($uname).':'.&escape($udom),
7834: &homeserver($uname,$udom));
7835: if ($listing eq 'unknown_cmd') {
7836: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
7837: &homeserver($uname,$udom));
7838: } else {
7839: @listing_results = map { &unescape($_); } split(/:/,$listing);
7840: }
7841: if ($listing eq 'unknown_cmd') {
7842: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
7843: &homeserver($uname,$udom));
7844: @listing_results = split(/:/,$listing);
7845: } else {
7846: @listing_results = map { &unescape($_); } split(/:/,$listing);
7847: }
7848: return @listing_results;
7849: } elsif(!$alternateRoot) {
7850: my %allusers;
7851: my %servers = &get_servers($udom,'library');
7852: foreach my $tryserver (keys(%servers)) {
7853: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
7854: &escape($udom),$tryserver);
7855: if ($listing eq 'unknown_cmd') {
7856: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
7857: $udom, $tryserver);
7858: } else {
7859: @listing_results = map { &unescape($_); } split(/:/,$listing);
7860: }
7861: if ($listing eq 'unknown_cmd') {
7862: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
7863: $udom, $tryserver);
7864: @listing_results = split(/:/,$listing);
7865: } else {
7866: @listing_results =
7867: map { &unescape($_); } split(/:/,$listing);
7868: }
7869: if ($listing_results[0] ne 'no_such_dir' &&
7870: $listing_results[0] ne 'empty' &&
7871: $listing_results[0] ne 'con_lost') {
7872: foreach my $line (@listing_results) {
7873: my ($entry) = split(/&/,$line,2);
7874: $allusers{$entry} = 1;
7875: }
7876: }
7877: }
7878: my $alluserstr='';
7879: foreach my $user (sort(keys(%allusers))) {
7880: $alluserstr.=$user.'&user:';
7881: }
7882: $alluserstr=~s/:$//;
7883: return split(/:/,$alluserstr);
7884: } else {
7885: return ('missing user name');
7886: }
7887: } elsif(!defined($getpropath)) {
7888: my @all_domains = sort(&all_domains());
7889: foreach my $domain (@all_domains) {
7890: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
7891: }
7892: return @all_domains;
7893: } else {
7894: return ('missing domain');
7895: }
7896: }
7897:
7898: # --------------------------------------------- GetFileTimestamp
7899: # This function utilizes dirlist and returns the date stamp for
7900: # when it was last modified. It will also return an error of -1
7901: # if an error occurs
7902:
7903: sub GetFileTimestamp {
7904: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
7905: $studentDomain = &LONCAPA::clean_domain($studentDomain);
7906: $studentName = &LONCAPA::clean_username($studentName);
7907: my ($fileStat) =
7908: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
7909: undef,$getuserdir);
7910: my @stats = split('&', $fileStat);
7911: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7912: # @stats contains first the filename, then the stat output
7913: return $stats[10]; # so this is 10 instead of 9.
7914: } else {
7915: return -1;
7916: }
7917: }
7918:
7919: sub stat_file {
7920: my ($uri) = @_;
7921: $uri = &clutter_with_no_wrapper($uri);
7922:
7923: my ($udom,$uname,$file);
7924: if ($uri =~ m-^/(uploaded|editupload)/-) {
7925: ($udom,$uname,$file) =
7926: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
7927: $file = 'userfiles/'.$file;
7928: }
7929: if ($uri =~ m-^/res/-) {
7930: ($udom,$uname) =
7931: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
7932: $file = $uri;
7933: }
7934:
7935: if (!$udom || !$uname || !$file) {
7936: # unable to handle the uri
7937: return ();
7938: }
7939: my $getpropath;
7940: if ($file =~ /^userfiles\//) {
7941: $getpropath = 1;
7942: }
7943: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
7944: my @stats = split('&', $result);
7945:
7946: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
7947: shift(@stats); #filename is first
7948: return @stats;
7949: }
7950: return ();
7951: }
7952:
7953: # -------------------------------------------------------- Value of a Condition
7954:
7955: # gets the value of a specific preevaluated condition
7956: # stored in the string $env{user.state.<cid>}
7957: # or looks up a condition reference in the bighash and if if hasn't
7958: # already been evaluated recurses into docondval to get the value of
7959: # the condition, then memoizing it to
7960: # $env{user.state.<cid>.<condition>}
7961: sub directcondval {
7962: my $number=shift;
7963: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
7964: &Apache::lonuserstate::evalstate();
7965: }
7966: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
7967: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
7968: } elsif ($number =~ /^_/) {
7969: my $sub_condition;
7970: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7971: &GDBM_READER(),0640)) {
7972: $sub_condition=$bighash{'conditions'.$number};
7973: untie(%bighash);
7974: }
7975: my $value = &docondval($sub_condition);
7976: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
7977: return $value;
7978: }
7979: if ($env{'user.state.'.$env{'request.course.id'}}) {
7980: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
7981: } else {
7982: return 2;
7983: }
7984: }
7985:
7986: # get the collection of conditions for this resource
7987: sub condval {
7988: my $condidx=shift;
7989: my $allpathcond='';
7990: foreach my $cond (split(/\|/,$condidx)) {
7991: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
7992: $allpathcond.=
7993: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
7994: }
7995: }
7996: $allpathcond=~s/\|$//;
7997: return &docondval($allpathcond);
7998: }
7999:
8000: #evaluates an expression of conditions
8001: sub docondval {
8002: my ($allpathcond) = @_;
8003: my $result=0;
8004: if ($env{'request.course.id'}
8005: && defined($allpathcond)) {
8006: my $operand='|';
8007: my @stack;
8008: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8009: if ($chunk eq '(') {
8010: push @stack,($operand,$result);
8011: } elsif ($chunk eq ')') {
8012: my $before=pop @stack;
8013: if (pop @stack eq '&') {
8014: $result=$result>$before?$before:$result;
8015: } else {
8016: $result=$result>$before?$result:$before;
8017: }
8018: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8019: $operand=$chunk;
8020: } else {
8021: my $new=directcondval($chunk);
8022: if ($operand eq '&') {
8023: $result=$result>$new?$new:$result;
8024: } else {
8025: $result=$result>$new?$result:$new;
8026: }
8027: }
8028: }
8029: }
8030: return $result;
8031: }
8032:
8033: # ---------------------------------------------------- Devalidate courseresdata
8034:
8035: sub devalidatecourseresdata {
8036: my ($coursenum,$coursedomain)=@_;
8037: my $hashid=$coursenum.':'.$coursedomain;
8038: &devalidate_cache_new('courseres',$hashid);
8039: }
8040:
8041:
8042: # --------------------------------------------------- Course Resourcedata Query
8043: #
8044: # Parameters:
8045: # $coursenum - Number of the course.
8046: # $coursedomain - Domain at which the course was created.
8047: # Returns:
8048: # A hash of the course parameters along (I think) with timestamps
8049: # and version info.
8050:
8051: sub get_courseresdata {
8052: my ($coursenum,$coursedomain)=@_;
8053: my $coursehom=&homeserver($coursenum,$coursedomain);
8054: my $hashid=$coursenum.':'.$coursedomain;
8055: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8056: my %dumpreply;
8057: unless (defined($cached)) {
8058: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8059: $result=\%dumpreply;
8060: my ($tmp) = keys(%dumpreply);
8061: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8062: &do_cache_new('courseres',$hashid,$result,600);
8063: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8064: return $tmp;
8065: } elsif ($tmp =~ /^(error)/) {
8066: $result=undef;
8067: &do_cache_new('courseres',$hashid,$result,600);
8068: }
8069: }
8070: return $result;
8071: }
8072:
8073: sub devalidateuserresdata {
8074: my ($uname,$udom)=@_;
8075: my $hashid="$udom:$uname";
8076: &devalidate_cache_new('userres',$hashid);
8077: }
8078:
8079: sub get_userresdata {
8080: my ($uname,$udom)=@_;
8081: #most student don\'t have any data set, check if there is some data
8082: if (&EXT_cache_status($udom,$uname)) { return undef; }
8083:
8084: my $hashid="$udom:$uname";
8085: my ($result,$cached)=&is_cached_new('userres',$hashid);
8086: if (!defined($cached)) {
8087: my %resourcedata=&dump('resourcedata',$udom,$uname);
8088: $result=\%resourcedata;
8089: &do_cache_new('userres',$hashid,$result,600);
8090: }
8091: my ($tmp)=keys(%$result);
8092: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8093: return $result;
8094: }
8095: #error 2 occurs when the .db doesn't exist
8096: if ($tmp!~/error: 2 /) {
8097: &logthis("<font color=\"blue\">WARNING:".
8098: " Trying to get resource data for ".
8099: $uname." at ".$udom.": ".
8100: $tmp."</font>");
8101: } elsif ($tmp=~/error: 2 /) {
8102: #&EXT_cache_set($udom,$uname);
8103: &do_cache_new('userres',$hashid,undef,600);
8104: undef($tmp); # not really an error so don't send it back
8105: }
8106: return $tmp;
8107: }
8108: #----------------------------------------------- resdata - return resource data
8109: # Purpose:
8110: # Return resource data for either users or for a course.
8111: # Parameters:
8112: # $name - Course/user name.
8113: # $domain - Name of the domain the user/course is registered on.
8114: # $type - Type of thing $name is (must be 'course' or 'user'
8115: # @which - Array of names of resources desired.
8116: # Returns:
8117: # The value of the first reasource in @which that is found in the
8118: # resource hash.
8119: # Exceptional Conditions:
8120: # If the $type passed in is not valid (not the string 'course' or
8121: # 'user', an undefined reference is returned.
8122: # If none of the resources are found, an undef is returned
8123: sub resdata {
8124: my ($name,$domain,$type,@which)=@_;
8125: my $result;
8126: if ($type eq 'course') {
8127: $result=&get_courseresdata($name,$domain);
8128: } elsif ($type eq 'user') {
8129: $result=&get_userresdata($name,$domain);
8130: }
8131: if (!ref($result)) { return $result; }
8132: foreach my $item (@which) {
8133: if (defined($result->{$item->[0]})) {
8134: return [$result->{$item->[0]},$item->[1]];
8135: }
8136: }
8137: return undef;
8138: }
8139:
8140: #
8141: # EXT resource caching routines
8142: #
8143:
8144: sub clear_EXT_cache_status {
8145: &delenv('cache.EXT.');
8146: }
8147:
8148: sub EXT_cache_status {
8149: my ($target_domain,$target_user) = @_;
8150: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8151: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
8152: # We know already the user has no data
8153: return 1;
8154: } else {
8155: return 0;
8156: }
8157: }
8158:
8159: sub EXT_cache_set {
8160: my ($target_domain,$target_user) = @_;
8161: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
8162: #&appenv({$cachename => time});
8163: }
8164:
8165: # --------------------------------------------------------- Value of a Variable
8166: sub EXT {
8167:
8168: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
8169: unless ($varname) { return ''; }
8170: #get real user name/domain, courseid and symb
8171: my $courseid;
8172: my $publicuser;
8173: if ($symbparm) {
8174: $symbparm=&get_symb_from_alias($symbparm);
8175: }
8176: if (!($uname && $udom)) {
8177: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
8178: if (!$symbparm) { $symbparm=$cursymb; }
8179: } else {
8180: $courseid=$env{'request.course.id'};
8181: }
8182: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
8183: my $rest;
8184: if (defined($therest[0])) {
8185: $rest=join('.',@therest);
8186: } else {
8187: $rest='';
8188: }
8189:
8190: my $qualifierrest=$qualifier;
8191: if ($rest) { $qualifierrest.='.'.$rest; }
8192: my $spacequalifierrest=$space;
8193: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
8194: if ($realm eq 'user') {
8195: # --------------------------------------------------------------- user.resource
8196: if ($space eq 'resource') {
8197: if ( (defined($Apache::lonhomework::parsing_a_problem)
8198: || defined($Apache::lonhomework::parsing_a_task))
8199: &&
8200: ($symbparm eq &symbread()) ) {
8201: # if we are in the middle of processing the resource the
8202: # get the value we are planning on committing
8203: if (defined($Apache::lonhomework::results{$qualifierrest})) {
8204: return $Apache::lonhomework::results{$qualifierrest};
8205: } else {
8206: return $Apache::lonhomework::history{$qualifierrest};
8207: }
8208: } else {
8209: my %restored;
8210: if ($publicuser || $env{'request.state'} eq 'construct') {
8211: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
8212: } else {
8213: %restored=&restore($symbparm,$courseid,$udom,$uname);
8214: }
8215: return $restored{$qualifierrest};
8216: }
8217: # ----------------------------------------------------------------- user.access
8218: } elsif ($space eq 'access') {
8219: # FIXME - not supporting calls for a specific user
8220: return &allowed($qualifier,$rest);
8221: # ------------------------------------------ user.preferences, user.environment
8222: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
8223: if (($uname eq $env{'user.name'}) &&
8224: ($udom eq $env{'user.domain'})) {
8225: return $env{join('.',('environment',$qualifierrest))};
8226: } else {
8227: my %returnhash;
8228: if (!$publicuser) {
8229: %returnhash=&userenvironment($udom,$uname,
8230: $qualifierrest);
8231: }
8232: return $returnhash{$qualifierrest};
8233: }
8234: # ----------------------------------------------------------------- user.course
8235: } elsif ($space eq 'course') {
8236: # FIXME - not supporting calls for a specific user
8237: return $env{join('.',('request.course',$qualifier))};
8238: # ------------------------------------------------------------------- user.role
8239: } elsif ($space eq 'role') {
8240: # FIXME - not supporting calls for a specific user
8241: my ($role,$where)=split(/\./,$env{'request.role'});
8242: if ($qualifier eq 'value') {
8243: return $role;
8244: } elsif ($qualifier eq 'extent') {
8245: return $where;
8246: }
8247: # ----------------------------------------------------------------- user.domain
8248: } elsif ($space eq 'domain') {
8249: return $udom;
8250: # ------------------------------------------------------------------- user.name
8251: } elsif ($space eq 'name') {
8252: return $uname;
8253: # ---------------------------------------------------- Any other user namespace
8254: } else {
8255: my %reply;
8256: if (!$publicuser) {
8257: %reply=&get($space,[$qualifierrest],$udom,$uname);
8258: }
8259: return $reply{$qualifierrest};
8260: }
8261: } elsif ($realm eq 'query') {
8262: # ---------------------------------------------- pull stuff out of query string
8263: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
8264: [$spacequalifierrest]);
8265: return $env{'form.'.$spacequalifierrest};
8266: } elsif ($realm eq 'request') {
8267: # ------------------------------------------------------------- request.browser
8268: if ($space eq 'browser') {
8269: if ($qualifier eq 'textremote') {
8270: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
8271: return 1;
8272: } else {
8273: return 0;
8274: }
8275: } else {
8276: return $env{'browser.'.$qualifier};
8277: }
8278: # ------------------------------------------------------------ request.filename
8279: } else {
8280: return $env{'request.'.$spacequalifierrest};
8281: }
8282: } elsif ($realm eq 'course') {
8283: # ---------------------------------------------------------- course.description
8284: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
8285: } elsif ($realm eq 'resource') {
8286:
8287: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
8288: if (!$symbparm) { $symbparm=&symbread(); }
8289: }
8290:
8291: if ($space eq 'title') {
8292: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
8293: return &gettitle($symbparm);
8294: }
8295:
8296: if ($space eq 'map') {
8297: my ($map) = &decode_symb($symbparm);
8298: return &symbread($map);
8299: }
8300: if ($space eq 'filename') {
8301: if ($symbparm) {
8302: return &clutter((&decode_symb($symbparm))[2]);
8303: }
8304: return &hreflocation('',$env{'request.filename'});
8305: }
8306:
8307: my ($section, $group, @groups);
8308: my ($courselevelm,$courselevel);
8309: if ($symbparm && defined($courseid) &&
8310: $courseid eq $env{'request.course.id'}) {
8311:
8312: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
8313:
8314: # ----------------------------------------------------- Cascading lookup scheme
8315: my $symbp=$symbparm;
8316: my $mapp=&deversion((&decode_symb($symbp))[0]);
8317:
8318: my $symbparm=$symbp.'.'.$spacequalifierrest;
8319: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
8320:
8321: if (($env{'user.name'} eq $uname) &&
8322: ($env{'user.domain'} eq $udom)) {
8323: $section=$env{'request.course.sec'};
8324: @groups = split(/:/,$env{'request.course.groups'});
8325: @groups=&sort_course_groups($courseid,@groups);
8326: } else {
8327: if (! defined($usection)) {
8328: $section=&getsection($udom,$uname,$courseid);
8329: } else {
8330: $section = $usection;
8331: }
8332: @groups = &get_users_groups($udom,$uname,$courseid);
8333: }
8334:
8335: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
8336: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
8337: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
8338:
8339: $courselevel=$courseid.'.'.$spacequalifierrest;
8340: my $courselevelr=$courseid.'.'.$symbparm;
8341: $courselevelm=$courseid.'.'.$mapparm;
8342:
8343: # ----------------------------------------------------------- first, check user
8344:
8345: my $userreply=&resdata($uname,$udom,'user',
8346: ([$courselevelr,'resource'],
8347: [$courselevelm,'map' ],
8348: [$courselevel, 'course' ]));
8349: if (defined($userreply)) { return &get_reply($userreply); }
8350:
8351: # ------------------------------------------------ second, check some of course
8352: my $coursereply;
8353: if (@groups > 0) {
8354: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
8355: $mapparm,$spacequalifierrest);
8356: if (defined($coursereply)) { return &get_reply($coursereply); }
8357: }
8358:
8359: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8360: $env{'course.'.$courseid.'.domain'},
8361: 'course',
8362: ([$seclevelr, 'resource'],
8363: [$seclevelm, 'map' ],
8364: [$seclevel, 'course' ],
8365: [$courselevelr,'resource']));
8366: if (defined($coursereply)) { return &get_reply($coursereply); }
8367:
8368: # ------------------------------------------------------ third, check map parms
8369: my %parmhash=();
8370: my $thisparm='';
8371: if (tie(%parmhash,'GDBM_File',
8372: $env{'request.course.fn'}.'_parms.db',
8373: &GDBM_READER(),0640)) {
8374: $thisparm=$parmhash{$symbparm};
8375: untie(%parmhash);
8376: }
8377: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
8378: }
8379: # ------------------------------------------ fourth, look in resource metadata
8380:
8381: $spacequalifierrest=~s/\./\_/;
8382: my $filename;
8383: if (!$symbparm) { $symbparm=&symbread(); }
8384: if ($symbparm) {
8385: $filename=(&decode_symb($symbparm))[2];
8386: } else {
8387: $filename=$env{'request.filename'};
8388: }
8389: my $metadata=&metadata($filename,$spacequalifierrest);
8390: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8391: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
8392: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
8393:
8394: # ---------------------------------------------- fourth, look in rest of course
8395: if ($symbparm && defined($courseid) &&
8396: $courseid eq $env{'request.course.id'}) {
8397: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
8398: $env{'course.'.$courseid.'.domain'},
8399: 'course',
8400: ([$courselevelm,'map' ],
8401: [$courselevel, 'course']));
8402: if (defined($coursereply)) { return &get_reply($coursereply); }
8403: }
8404: # ------------------------------------------------------------------ Cascade up
8405: unless ($space eq '0') {
8406: my @parts=split(/_/,$space);
8407: my $id=pop(@parts);
8408: my $part=join('_',@parts);
8409: if ($part eq '') { $part='0'; }
8410: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
8411: $symbparm,$udom,$uname,$section,1);
8412: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
8413: }
8414: if ($recurse) { return undef; }
8415: my $pack_def=&packages_tab_default($filename,$varname);
8416: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
8417: # ---------------------------------------------------- Any other user namespace
8418: } elsif ($realm eq 'environment') {
8419: # ----------------------------------------------------------------- environment
8420: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
8421: return $env{'environment.'.$spacequalifierrest};
8422: } else {
8423: if ($uname eq 'anonymous' && $udom eq '') {
8424: return '';
8425: }
8426: my %returnhash=&userenvironment($udom,$uname,
8427: $spacequalifierrest);
8428: return $returnhash{$spacequalifierrest};
8429: }
8430: } elsif ($realm eq 'system') {
8431: # ----------------------------------------------------------------- system.time
8432: if ($space eq 'time') {
8433: return time;
8434: }
8435: } elsif ($realm eq 'server') {
8436: # ----------------------------------------------------------------- system.time
8437: if ($space eq 'name') {
8438: return $ENV{'SERVER_NAME'};
8439: }
8440: }
8441: return '';
8442: }
8443:
8444: sub get_reply {
8445: my ($reply_value) = @_;
8446: if (ref($reply_value) eq 'ARRAY') {
8447: if (wantarray) {
8448: return @$reply_value;
8449: }
8450: return $reply_value->[0];
8451: } else {
8452: return $reply_value;
8453: }
8454: }
8455:
8456: sub check_group_parms {
8457: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
8458: my @groupitems = ();
8459: my $resultitem;
8460: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
8461: foreach my $group (@{$groups}) {
8462: foreach my $level (@levels) {
8463: my $item = $courseid.'.['.$group.'].'.$level->[0];
8464: push(@groupitems,[$item,$level->[1]]);
8465: }
8466: }
8467: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
8468: $env{'course.'.$courseid.'.domain'},
8469: 'course',@groupitems);
8470: return $coursereply;
8471: }
8472:
8473: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
8474: my ($courseid,@groups) = @_;
8475: @groups = sort(@groups);
8476: return @groups;
8477: }
8478:
8479: sub packages_tab_default {
8480: my ($uri,$varname)=@_;
8481: my (undef,$part,$name)=split(/\./,$varname);
8482:
8483: my (@extension,@specifics,$do_default);
8484: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
8485: my ($pack_type,$pack_part)=split(/_/,$package,2);
8486: if ($pack_type eq 'default') {
8487: $do_default=1;
8488: } elsif ($pack_type eq 'extension') {
8489: push(@extension,[$package,$pack_type,$pack_part]);
8490: } elsif ($pack_part eq $part || $pack_type eq 'part') {
8491: # only look at packages defaults for packages that this id is
8492: push(@specifics,[$package,$pack_type,$pack_part]);
8493: }
8494: }
8495: # first look for a package that matches the requested part id
8496: foreach my $package (@specifics) {
8497: my (undef,$pack_type,$pack_part)=@{$package};
8498: next if ($pack_part ne $part);
8499: if (defined($packagetab{"$pack_type&$name&default"})) {
8500: return $packagetab{"$pack_type&$name&default"};
8501: }
8502: }
8503: # look for any possible matching non extension_ package
8504: foreach my $package (@specifics) {
8505: my (undef,$pack_type,$pack_part)=@{$package};
8506: if (defined($packagetab{"$pack_type&$name&default"})) {
8507: return $packagetab{"$pack_type&$name&default"};
8508: }
8509: if ($pack_type eq 'part') { $pack_part='0'; }
8510: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
8511: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
8512: }
8513: }
8514: # look for any posible extension_ match
8515: foreach my $package (@extension) {
8516: my ($package,$pack_type)=@{$package};
8517: if (defined($packagetab{"$pack_type&$name&default"})) {
8518: return $packagetab{"$pack_type&$name&default"};
8519: }
8520: if (defined($packagetab{$package."&$name&default"})) {
8521: return $packagetab{$package."&$name&default"};
8522: }
8523: }
8524: # look for a global default setting
8525: if ($do_default && defined($packagetab{"default&$name&default"})) {
8526: return $packagetab{"default&$name&default"};
8527: }
8528: return undef;
8529: }
8530:
8531: sub add_prefix_and_part {
8532: my ($prefix,$part)=@_;
8533: my $keyroot;
8534: if (defined($prefix) && $prefix !~ /^__/) {
8535: # prefix that has a part already
8536: $keyroot=$prefix;
8537: } elsif (defined($prefix)) {
8538: # prefix that is missing a part
8539: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
8540: } else {
8541: # no prefix at all
8542: if (defined($part)) { $keyroot='_'.$part; }
8543: }
8544: return $keyroot;
8545: }
8546:
8547: # ---------------------------------------------------------------- Get metadata
8548:
8549: my %metaentry;
8550: my %importedpartids;
8551: sub metadata {
8552: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
8553: $uri=&declutter($uri);
8554: # if it is a non metadata possible uri return quickly
8555: if (($uri eq '') ||
8556: (($uri =~ m|^/*adm/|) &&
8557: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
8558: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
8559: return undef;
8560: }
8561: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
8562: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
8563: return undef;
8564: }
8565: my $filename=$uri;
8566: $uri=~s/\.meta$//;
8567: #
8568: # Is the metadata already cached?
8569: # Look at timestamp of caching
8570: # Everything is cached by the main uri, libraries are never directly cached
8571: #
8572: if (!defined($liburi)) {
8573: my ($result,$cached)=&is_cached_new('meta',$uri);
8574: if (defined($cached)) { return $result->{':'.$what}; }
8575: }
8576: {
8577: # Imported parts would go here
8578: my %importedids=();
8579: my @origfileimportpartids=();
8580: my $importedparts=0;
8581: #
8582: # Is this a recursive call for a library?
8583: #
8584: # if (! exists($metacache{$uri})) {
8585: # $metacache{$uri}={};
8586: # }
8587: my $cachetime = 60*60;
8588: if ($liburi) {
8589: $liburi=&declutter($liburi);
8590: $filename=$liburi;
8591: } else {
8592: &devalidate_cache_new('meta',$uri);
8593: undef(%metaentry);
8594: }
8595: my %metathesekeys=();
8596: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
8597: my $metastring;
8598: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
8599: my $which = &hreflocation('','/'.($liburi || $uri));
8600: $metastring =
8601: &Apache::lonnet::ssi_body($which,
8602: ('grade_target' => 'meta'));
8603: $cachetime = 1; # only want this cached in the child not long term
8604: } elsif (($uri !~ m -^(editupload)/-) &&
8605: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
8606: my $file=&filelocation('',&clutter($filename));
8607: #push(@{$metaentry{$uri.'.file'}},$file);
8608: $metastring=&getfile($file);
8609: }
8610: my $parser=HTML::LCParser->new(\$metastring);
8611: my $token;
8612: undef %metathesekeys;
8613: while ($token=$parser->get_token) {
8614: if ($token->[0] eq 'S') {
8615: if (defined($token->[2]->{'package'})) {
8616: #
8617: # This is a package - get package info
8618: #
8619: my $package=$token->[2]->{'package'};
8620: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8621: if (defined($token->[2]->{'id'})) {
8622: $keyroot.='_'.$token->[2]->{'id'};
8623: }
8624: if ($metaentry{':packages'}) {
8625: $metaentry{':packages'}.=','.$package.$keyroot;
8626: } else {
8627: $metaentry{':packages'}=$package.$keyroot;
8628: }
8629: foreach my $pack_entry (keys(%packagetab)) {
8630: my $part=$keyroot;
8631: $part=~s/^\_//;
8632: if ($pack_entry=~/^\Q$package\E\&/ ||
8633: $pack_entry=~/^\Q$package\E_0\&/) {
8634: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
8635: # ignore package.tab specified default values
8636: # here &package_tab_default() will fetch those
8637: if ($subp eq 'default') { next; }
8638: my $value=$packagetab{$pack_entry};
8639: my $unikey;
8640: if ($pack =~ /_0$/) {
8641: $unikey='parameter_0_'.$name;
8642: $part=0;
8643: } else {
8644: $unikey='parameter'.$keyroot.'_'.$name;
8645: }
8646: if ($subp eq 'display') {
8647: $value.=' [Part: '.$part.']';
8648: }
8649: $metaentry{':'.$unikey.'.part'}=$part;
8650: $metathesekeys{$unikey}=1;
8651: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8652: $metaentry{':'.$unikey.'.'.$subp}=$value;
8653: }
8654: if (defined($metaentry{':'.$unikey.'.default'})) {
8655: $metaentry{':'.$unikey}=
8656: $metaentry{':'.$unikey.'.default'};
8657: }
8658: }
8659: }
8660: } else {
8661: #
8662: # This is not a package - some other kind of start tag
8663: #
8664: my $entry=$token->[1];
8665: my $unikey='';
8666:
8667: if ($entry eq 'import') {
8668: #
8669: # Importing a library here
8670: #
8671: my $location=$parser->get_text('/import');
8672: my $dir=$filename;
8673: $dir=~s|[^/]*$||;
8674: $location=&filelocation($dir,$location);
8675:
8676: my $importmode=$token->[2]->{'importmode'};
8677: if ($importmode eq 'problem') {
8678: # Import as problem/response
8679: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8680: } elsif ($importmode eq 'part') {
8681: # Import as part(s)
8682: $importedparts=1;
8683: # We need to get the original file and the imported file to get the part order correct
8684: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
8685: # Load and inspect original file
8686: if ($#origfileimportpartids<0) {
8687: undef(%importedpartids);
8688: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
8689: my $origfile=&getfile($origfilelocation);
8690: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8691: }
8692:
8693: # Load and inspect imported file
8694: my $impfile=&getfile($location);
8695: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
8696: if ($#impfilepartids>=0) {
8697: # This problem had parts
8698: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
8699: } else {
8700: # Importing by turning a single problem into a problem part
8701: # It gets the import-tags ID as part-ID
8702: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
8703: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
8704: }
8705: } else {
8706: # Normal import
8707: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
8708: if (defined($token->[2]->{'id'})) {
8709: $unikey.='_'.$token->[2]->{'id'};
8710: }
8711: }
8712:
8713: if ($depthcount<20) {
8714: my $metadata =
8715: &metadata($uri,'keys', $location,$unikey,
8716: $depthcount+1);
8717: foreach my $meta (split(',',$metadata)) {
8718: $metaentry{':'.$meta}=$metaentry{':'.$meta};
8719: $metathesekeys{$meta}=1;
8720: }
8721:
8722: }
8723: } else {
8724: #
8725: # Not importing, some other kind of non-package, non-library start tag
8726: #
8727: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
8728: if (defined($token->[2]->{'id'})) {
8729: $unikey.='_'.$token->[2]->{'id'};
8730: }
8731: if (defined($token->[2]->{'name'})) {
8732: $unikey.='_'.$token->[2]->{'name'};
8733: }
8734: $metathesekeys{$unikey}=1;
8735: foreach my $param (@{$token->[3]}) {
8736: $metaentry{':'.$unikey.'.'.$param} =
8737: $token->[2]->{$param};
8738: }
8739: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
8740: my $default=$metaentry{':'.$unikey.'.default'};
8741: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
8742: # only ws inside the tag, and not in default, so use default
8743: # as value
8744: $metaentry{':'.$unikey}=$default;
8745: } elsif ( $internaltext =~ /\S/ ) {
8746: # something interesting inside the tag
8747: $metaentry{':'.$unikey}=$internaltext;
8748: } else {
8749: # no interesting values, don't set a default
8750: }
8751: # end of not-a-package not-a-library import
8752: }
8753: # end of not-a-package start tag
8754: }
8755: # the next is the end of "start tag"
8756: }
8757: }
8758: my ($extension) = ($uri =~ /\.(\w+)$/);
8759: $extension = lc($extension);
8760: if ($extension eq 'htm') { $extension='html'; }
8761:
8762: foreach my $key (keys(%packagetab)) {
8763: #no specific packages #how's our extension
8764: if ($key!~/^extension_\Q$extension\E&/) { next; }
8765: &metadata_create_package_def($uri,$key,'extension_'.$extension,
8766: \%metathesekeys);
8767: }
8768:
8769: if (!exists($metaentry{':packages'})
8770: || $packagetab{"import_defaults&extension_$extension"}) {
8771: foreach my $key (keys(%packagetab)) {
8772: #no specific packages well let's get default then
8773: if ($key!~/^default&/) { next; }
8774: &metadata_create_package_def($uri,$key,'default',
8775: \%metathesekeys);
8776: }
8777: }
8778: # are there custom rights to evaluate
8779: if ($metaentry{':copyright'} eq 'custom') {
8780:
8781: #
8782: # Importing a rights file here
8783: #
8784: unless ($depthcount) {
8785: my $location=$metaentry{':customdistributionfile'};
8786: my $dir=$filename;
8787: $dir=~s|[^/]*$||;
8788: $location=&filelocation($dir,$location);
8789: my $rights_metadata =
8790: &metadata($uri,'keys',$location,'_rights',
8791: $depthcount+1);
8792: foreach my $rights (split(',',$rights_metadata)) {
8793: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
8794: $metathesekeys{$rights}=1;
8795: }
8796: }
8797: }
8798: # uniqifiy package listing
8799: my %seen;
8800: my @uniq_packages =
8801: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
8802: $metaentry{':packages'} = join(',',@uniq_packages);
8803:
8804: if ($importedparts) {
8805: # We had imported parts and need to rebuild partorder
8806: $metaentry{':partorder'}='';
8807: $metathesekeys{'partorder'}=1;
8808: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
8809: if ($origfileimportpartids[$index] eq 'part') {
8810: # original part, part of the problem
8811: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
8812: } else {
8813: # we have imported parts at this position
8814: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
8815: }
8816: }
8817: $metaentry{':partorder'}=~s/^\,//;
8818: }
8819:
8820: $metaentry{':keys'} = join(',',keys(%metathesekeys));
8821: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
8822: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
8823: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
8824: # this is the end of "was not already recently cached
8825: }
8826: return $metaentry{':'.$what};
8827: }
8828:
8829: sub metadata_create_package_def {
8830: my ($uri,$key,$package,$metathesekeys)=@_;
8831: my ($pack,$name,$subp)=split(/\&/,$key);
8832: if ($subp eq 'default') { next; }
8833:
8834: if (defined($metaentry{':packages'})) {
8835: $metaentry{':packages'}.=','.$package;
8836: } else {
8837: $metaentry{':packages'}=$package;
8838: }
8839: my $value=$packagetab{$key};
8840: my $unikey;
8841: $unikey='parameter_0_'.$name;
8842: $metaentry{':'.$unikey.'.part'}=0;
8843: $$metathesekeys{$unikey}=1;
8844: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
8845: $metaentry{':'.$unikey.'.'.$subp}=$value;
8846: }
8847: if (defined($metaentry{':'.$unikey.'.default'})) {
8848: $metaentry{':'.$unikey}=
8849: $metaentry{':'.$unikey.'.default'};
8850: }
8851: }
8852:
8853: sub metadata_generate_part0 {
8854: my ($metadata,$metacache,$uri) = @_;
8855: my %allnames;
8856: foreach my $metakey (keys(%$metadata)) {
8857: if ($metakey=~/^parameter\_(.*)/) {
8858: my $part=$$metacache{':'.$metakey.'.part'};
8859: my $name=$$metacache{':'.$metakey.'.name'};
8860: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
8861: $allnames{$name}=$part;
8862: }
8863: }
8864: }
8865: foreach my $name (keys(%allnames)) {
8866: $$metadata{"parameter_0_$name"}=1;
8867: my $key=":parameter_0_$name";
8868: $$metacache{"$key.part"}='0';
8869: $$metacache{"$key.name"}=$name;
8870: $$metacache{"$key.type"}=$$metacache{':parameter_'.
8871: $allnames{$name}.'_'.$name.
8872: '.type'};
8873: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
8874: '.display'};
8875: my $expr='[Part: '.$allnames{$name}.']';
8876: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
8877: $$metacache{"$key.display"}=$olddis;
8878: }
8879: }
8880:
8881: # ------------------------------------------------------ Devalidate title cache
8882:
8883: sub devalidate_title_cache {
8884: my ($url)=@_;
8885: if (!$env{'request.course.id'}) { return; }
8886: my $symb=&symbread($url);
8887: if (!$symb) { return; }
8888: my $key=$env{'request.course.id'}."\0".$symb;
8889: &devalidate_cache_new('title',$key);
8890: }
8891:
8892: # ------------------------------------------------- Get the title of a course
8893:
8894: sub current_course_title {
8895: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
8896: }
8897: # ------------------------------------------------- Get the title of a resource
8898:
8899: sub gettitle {
8900: my $urlsymb=shift;
8901: my $symb=&symbread($urlsymb);
8902: if ($symb) {
8903: my $key=$env{'request.course.id'}."\0".$symb;
8904: my ($result,$cached)=&is_cached_new('title',$key);
8905: if (defined($cached)) {
8906: return $result;
8907: }
8908: my ($map,$resid,$url)=&decode_symb($symb);
8909: my $title='';
8910: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
8911: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
8912: } else {
8913: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8914: &GDBM_READER(),0640)) {
8915: my $mapid=$bighash{'map_pc_'.&clutter($map)};
8916: $title=$bighash{'title_'.$mapid.'.'.$resid};
8917: untie(%bighash);
8918: }
8919: }
8920: $title=~s/\&colon\;/\:/gs;
8921: if ($title) {
8922: return &do_cache_new('title',$key,$title,600);
8923: }
8924: $urlsymb=$url;
8925: }
8926: my $title=&metadata($urlsymb,'title');
8927: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
8928: return $title;
8929: }
8930:
8931: sub get_slot {
8932: my ($which,$cnum,$cdom)=@_;
8933: if (!$cnum || !$cdom) {
8934: (undef,my $courseid)=&whichuser();
8935: $cdom=$env{'course.'.$courseid.'.domain'};
8936: $cnum=$env{'course.'.$courseid.'.num'};
8937: }
8938: my $key=join("\0",'slots',$cdom,$cnum,$which);
8939: my %slotinfo;
8940: if (exists($remembered{$key})) {
8941: $slotinfo{$which} = $remembered{$key};
8942: } else {
8943: %slotinfo=&get('slots',[$which],$cdom,$cnum);
8944: &Apache::lonhomework::showhash(%slotinfo);
8945: my ($tmp)=keys(%slotinfo);
8946: if ($tmp=~/^error:/) { return (); }
8947: $remembered{$key} = $slotinfo{$which};
8948: }
8949: if (ref($slotinfo{$which}) eq 'HASH') {
8950: return %{$slotinfo{$which}};
8951: }
8952: return $slotinfo{$which};
8953: }
8954: # ------------------------------------------------- Update symbolic store links
8955:
8956: sub symblist {
8957: my ($mapname,%newhash)=@_;
8958: $mapname=&deversion(&declutter($mapname));
8959: my %hash;
8960: if (($env{'request.course.fn'}) && (%newhash)) {
8961: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
8962: &GDBM_WRCREAT(),0640)) {
8963: foreach my $url (keys(%newhash)) {
8964: next if ($url eq 'last_known'
8965: && $env{'form.no_update_last_known'});
8966: $hash{declutter($url)}=&encode_symb($mapname,
8967: $newhash{$url}->[1],
8968: $newhash{$url}->[0]);
8969: }
8970: if (untie(%hash)) {
8971: return 'ok';
8972: }
8973: }
8974: }
8975: return 'error';
8976: }
8977:
8978: # --------------------------------------------------------------- Verify a symb
8979:
8980: sub symbverify {
8981: my ($symb,$thisurl)=@_;
8982: my $thisfn=$thisurl;
8983: $thisfn=&declutter($thisfn);
8984: # direct jump to resource in page or to a sequence - will construct own symbs
8985: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
8986: # check URL part
8987: my ($map,$resid,$url)=&decode_symb($symb);
8988:
8989: unless ($url eq $thisfn) { return 0; }
8990:
8991: $symb=&symbclean($symb);
8992: $thisurl=&deversion($thisurl);
8993: $thisfn=&deversion($thisfn);
8994:
8995: my %bighash;
8996: my $okay=0;
8997:
8998: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8999: &GDBM_READER(),0640)) {
9000: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9001: $thisurl =~ s/\?.+$//;
9002: }
9003: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9004: unless ($ids) {
9005: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9006: $ids=$bighash{$idkey};
9007: }
9008: if ($ids) {
9009: # ------------------------------------------------------------------- Has ID(s)
9010: foreach my $id (split(/\,/,$ids)) {
9011: my ($mapid,$resid)=split(/\./,$id);
9012: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9013: $symb =~ s/\?.+$//;
9014: }
9015: if (
9016: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9017: eq $symb) {
9018: if (($env{'request.role.adv'}) ||
9019: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9020: ($thisurl eq '/adm/navmaps')) {
9021: $okay=1;
9022: }
9023: }
9024: }
9025: }
9026: untie(%bighash);
9027: }
9028: return $okay;
9029: }
9030:
9031: # --------------------------------------------------------------- Clean-up symb
9032:
9033: sub symbclean {
9034: my $symb=shift;
9035: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9036: # remove version from map
9037: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9038:
9039: # remove version from URL
9040: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9041:
9042: # remove wrapper
9043:
9044: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9045: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9046: return $symb;
9047: }
9048:
9049: # ---------------------------------------------- Split symb to find map and url
9050:
9051: sub encode_symb {
9052: my ($map,$resid,$url)=@_;
9053: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9054: }
9055:
9056: sub decode_symb {
9057: my $symb=shift;
9058: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9059: my ($map,$resid,$url)=split(/___/,$symb);
9060: return (&fixversion($map),$resid,&fixversion($url));
9061: }
9062:
9063: sub fixversion {
9064: my $fn=shift;
9065: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
9066: my %bighash;
9067: my $uri=&clutter($fn);
9068: my $key=$env{'request.course.id'}.'_'.$uri;
9069: # is this cached?
9070: my ($result,$cached)=&is_cached_new('courseresversion',$key);
9071: if (defined($cached)) { return $result; }
9072: # unfortunately not cached, or expired
9073: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9074: &GDBM_READER(),0640)) {
9075: if ($bighash{'version_'.$uri}) {
9076: my $version=$bighash{'version_'.$uri};
9077: unless (($version eq 'mostrecent') ||
9078: ($version==&getversion($uri))) {
9079: $uri=~s/\.(\w+)$/\.$version\.$1/;
9080: }
9081: }
9082: untie %bighash;
9083: }
9084: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
9085: }
9086:
9087: sub deversion {
9088: my $url=shift;
9089: $url=~s/\.\d+\.(\w+)$/\.$1/;
9090: return $url;
9091: }
9092:
9093: # ------------------------------------------------------ Return symb list entry
9094:
9095: sub symbread {
9096: my ($thisfn,$donotrecurse)=@_;
9097: my $cache_str='request.symbread.cached.'.$thisfn;
9098: if (defined($env{$cache_str})) { return $env{$cache_str}; }
9099: # no filename provided? try from environment
9100: unless ($thisfn) {
9101: if ($env{'request.symb'}) {
9102: return $env{$cache_str}=&symbclean($env{'request.symb'});
9103: }
9104: $thisfn=$env{'request.filename'};
9105: }
9106: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9107: # is that filename actually a symb? Verify, clean, and return
9108: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
9109: if (&symbverify($thisfn,$1)) {
9110: return $env{$cache_str}=&symbclean($thisfn);
9111: }
9112: }
9113: $thisfn=declutter($thisfn);
9114: my %hash;
9115: my %bighash;
9116: my $syval='';
9117: if (($env{'request.course.fn'}) && ($thisfn)) {
9118: my $targetfn = $thisfn;
9119: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
9120: $targetfn = 'adm/wrapper/'.$thisfn;
9121: }
9122: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
9123: $targetfn=$1;
9124: }
9125: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9126: &GDBM_READER(),0640)) {
9127: $syval=$hash{$targetfn};
9128: untie(%hash);
9129: }
9130: # ---------------------------------------------------------- There was an entry
9131: if ($syval) {
9132: #unless ($syval=~/\_\d+$/) {
9133: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
9134: #&appenv({'request.ambiguous' => $thisfn});
9135: #return $env{$cache_str}='';
9136: #}
9137: #$syval.=$1;
9138: #}
9139: } else {
9140: # ------------------------------------------------------- Was not in symb table
9141: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9142: &GDBM_READER(),0640)) {
9143: # ---------------------------------------------- Get ID(s) for current resource
9144: my $ids=$bighash{'ids_'.&clutter($thisfn)};
9145: unless ($ids) {
9146: $ids=$bighash{'ids_/'.$thisfn};
9147: }
9148: unless ($ids) {
9149: # alias?
9150: $ids=$bighash{'mapalias_'.$thisfn};
9151: }
9152: if ($ids) {
9153: # ------------------------------------------------------------------- Has ID(s)
9154: my @possibilities=split(/\,/,$ids);
9155: if ($#possibilities==0) {
9156: # ----------------------------------------------- There is only one possibility
9157: my ($mapid,$resid)=split(/\./,$ids);
9158: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9159: $resid,$thisfn);
9160: } elsif (!$donotrecurse) {
9161: # ------------------------------------------ There is more than one possibility
9162: my $realpossible=0;
9163: foreach my $id (@possibilities) {
9164: my $file=$bighash{'src_'.$id};
9165: if (&allowed('bre',$file)) {
9166: my ($mapid,$resid)=split(/\./,$id);
9167: if ($bighash{'map_type_'.$mapid} ne 'page') {
9168: $realpossible++;
9169: $syval=&encode_symb($bighash{'map_id_'.$mapid},
9170: $resid,$thisfn);
9171: }
9172: }
9173: }
9174: if ($realpossible!=1) { $syval=''; }
9175: } else {
9176: $syval='';
9177: }
9178: }
9179: untie(%bighash)
9180: }
9181: }
9182: if ($syval) {
9183: return $env{$cache_str}=$syval;
9184: }
9185: }
9186: &appenv({'request.ambiguous' => $thisfn});
9187: return $env{$cache_str}='';
9188: }
9189:
9190: # ---------------------------------------------------------- Return random seed
9191:
9192: sub numval {
9193: my $txt=shift;
9194: $txt=~tr/A-J/0-9/;
9195: $txt=~tr/a-j/0-9/;
9196: $txt=~tr/K-T/0-9/;
9197: $txt=~tr/k-t/0-9/;
9198: $txt=~tr/U-Z/0-5/;
9199: $txt=~tr/u-z/0-5/;
9200: $txt=~s/\D//g;
9201: if ($_64bit) { if ($txt > 2**32) { return -1; } }
9202: return int($txt);
9203: }
9204:
9205: sub numval2 {
9206: my $txt=shift;
9207: $txt=~tr/A-J/0-9/;
9208: $txt=~tr/a-j/0-9/;
9209: $txt=~tr/K-T/0-9/;
9210: $txt=~tr/k-t/0-9/;
9211: $txt=~tr/U-Z/0-5/;
9212: $txt=~tr/u-z/0-5/;
9213: $txt=~s/\D//g;
9214: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9215: my $total;
9216: foreach my $val (@txts) { $total+=$val; }
9217: if ($_64bit) { if ($total > 2**32) { return -1; } }
9218: return int($total);
9219: }
9220:
9221: sub numval3 {
9222: use integer;
9223: my $txt=shift;
9224: $txt=~tr/A-J/0-9/;
9225: $txt=~tr/a-j/0-9/;
9226: $txt=~tr/K-T/0-9/;
9227: $txt=~tr/k-t/0-9/;
9228: $txt=~tr/U-Z/0-5/;
9229: $txt=~tr/u-z/0-5/;
9230: $txt=~s/\D//g;
9231: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
9232: my $total;
9233: foreach my $val (@txts) { $total+=$val; }
9234: if ($_64bit) { $total=(($total<<32)>>32); }
9235: return $total;
9236: }
9237:
9238: sub digest {
9239: my ($data)=@_;
9240: my $digest=&Digest::MD5::md5($data);
9241: my ($a,$b,$c,$d)=unpack("iiii",$digest);
9242: my ($e,$f);
9243: {
9244: use integer;
9245: $e=($a+$b);
9246: $f=($c+$d);
9247: if ($_64bit) {
9248: $e=(($e<<32)>>32);
9249: $f=(($f<<32)>>32);
9250: }
9251: }
9252: if (wantarray) {
9253: return ($e,$f);
9254: } else {
9255: my $g;
9256: {
9257: use integer;
9258: $g=($e+$f);
9259: if ($_64bit) {
9260: $g=(($g<<32)>>32);
9261: }
9262: }
9263: return $g;
9264: }
9265: }
9266:
9267: sub latest_rnd_algorithm_id {
9268: return '64bit5';
9269: }
9270:
9271: sub get_rand_alg {
9272: my ($courseid)=@_;
9273: if (!$courseid) { $courseid=(&whichuser())[1]; }
9274: if ($courseid) {
9275: return $env{"course.$courseid.rndseed"};
9276: }
9277: return &latest_rnd_algorithm_id();
9278: }
9279:
9280: sub validCODE {
9281: my ($CODE)=@_;
9282: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
9283: return 0;
9284: }
9285:
9286: sub getCODE {
9287: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
9288: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
9289: defined($Apache::lonhomework::parsing_a_task) ) &&
9290: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
9291: return $Apache::lonhomework::history{'resource.CODE'};
9292: }
9293: return undef;
9294: }
9295:
9296: sub rndseed {
9297: my ($symb,$courseid,$domain,$username)=@_;
9298: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
9299: if (!defined($symb)) {
9300: unless ($symb=$wsymb) { return time; }
9301: }
9302: if (!$courseid) { $courseid=$wcourseid; }
9303: if (!$domain) { $domain=$wdomain; }
9304: if (!$username) { $username=$wusername }
9305: my $which=&get_rand_alg();
9306:
9307: if (defined(&getCODE())) {
9308: if ($which eq '64bit5') {
9309: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
9310: } elsif ($which eq '64bit4') {
9311: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
9312: } else {
9313: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
9314: }
9315: } elsif ($which eq '64bit5') {
9316: return &rndseed_64bit5($symb,$courseid,$domain,$username);
9317: } elsif ($which eq '64bit4') {
9318: return &rndseed_64bit4($symb,$courseid,$domain,$username);
9319: } elsif ($which eq '64bit3') {
9320: return &rndseed_64bit3($symb,$courseid,$domain,$username);
9321: } elsif ($which eq '64bit2') {
9322: return &rndseed_64bit2($symb,$courseid,$domain,$username);
9323: } elsif ($which eq '64bit') {
9324: return &rndseed_64bit($symb,$courseid,$domain,$username);
9325: }
9326: return &rndseed_32bit($symb,$courseid,$domain,$username);
9327: }
9328:
9329: sub rndseed_32bit {
9330: my ($symb,$courseid,$domain,$username)=@_;
9331: {
9332: use integer;
9333: my $symbchck=unpack("%32C*",$symb) << 27;
9334: my $symbseed=numval($symb) << 22;
9335: my $namechck=unpack("%32C*",$username) << 17;
9336: my $nameseed=numval($username) << 12;
9337: my $domainseed=unpack("%32C*",$domain) << 7;
9338: my $courseseed=unpack("%32C*",$courseid);
9339: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
9340: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9341: #&logthis("rndseed :$num:$symb");
9342: if ($_64bit) { $num=(($num<<32)>>32); }
9343: return $num;
9344: }
9345: }
9346:
9347: sub rndseed_64bit {
9348: my ($symb,$courseid,$domain,$username)=@_;
9349: {
9350: use integer;
9351: my $symbchck=unpack("%32S*",$symb) << 21;
9352: my $symbseed=numval($symb) << 10;
9353: my $namechck=unpack("%32S*",$username);
9354:
9355: my $nameseed=numval($username) << 21;
9356: my $domainseed=unpack("%32S*",$domain) << 10;
9357: my $courseseed=unpack("%32S*",$courseid);
9358:
9359: my $num1=$symbchck+$symbseed+$namechck;
9360: my $num2=$nameseed+$domainseed+$courseseed;
9361: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9362: #&logthis("rndseed :$num:$symb");
9363: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9364: return "$num1,$num2";
9365: }
9366: }
9367:
9368: sub rndseed_64bit2 {
9369: my ($symb,$courseid,$domain,$username)=@_;
9370: {
9371: use integer;
9372: # strings need to be an even # of cahracters long, it it is odd the
9373: # last characters gets thrown away
9374: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9375: my $symbseed=numval($symb) << 10;
9376: my $namechck=unpack("%32S*",$username.' ');
9377:
9378: my $nameseed=numval($username) << 21;
9379: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9380: my $courseseed=unpack("%32S*",$courseid.' ');
9381:
9382: my $num1=$symbchck+$symbseed+$namechck;
9383: my $num2=$nameseed+$domainseed+$courseseed;
9384: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9385: #&logthis("rndseed :$num:$symb");
9386: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9387: return "$num1,$num2";
9388: }
9389: }
9390:
9391: sub rndseed_64bit3 {
9392: my ($symb,$courseid,$domain,$username)=@_;
9393: {
9394: use integer;
9395: # strings need to be an even # of cahracters long, it it is odd the
9396: # last characters gets thrown away
9397: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9398: my $symbseed=numval2($symb) << 10;
9399: my $namechck=unpack("%32S*",$username.' ');
9400:
9401: my $nameseed=numval2($username) << 21;
9402: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9403: my $courseseed=unpack("%32S*",$courseid.' ');
9404:
9405: my $num1=$symbchck+$symbseed+$namechck;
9406: my $num2=$nameseed+$domainseed+$courseseed;
9407: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9408: #&logthis("rndseed :$num1:$num2:$_64bit");
9409: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9410:
9411: return "$num1:$num2";
9412: }
9413: }
9414:
9415: sub rndseed_64bit4 {
9416: my ($symb,$courseid,$domain,$username)=@_;
9417: {
9418: use integer;
9419: # strings need to be an even # of cahracters long, it it is odd the
9420: # last characters gets thrown away
9421: my $symbchck=unpack("%32S*",$symb.' ') << 21;
9422: my $symbseed=numval3($symb) << 10;
9423: my $namechck=unpack("%32S*",$username.' ');
9424:
9425: my $nameseed=numval3($username) << 21;
9426: my $domainseed=unpack("%32S*",$domain.' ') << 10;
9427: my $courseseed=unpack("%32S*",$courseid.' ');
9428:
9429: my $num1=$symbchck+$symbseed+$namechck;
9430: my $num2=$nameseed+$domainseed+$courseseed;
9431: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
9432: #&logthis("rndseed :$num1:$num2:$_64bit");
9433: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
9434:
9435: return "$num1:$num2";
9436: }
9437: }
9438:
9439: sub rndseed_64bit5 {
9440: my ($symb,$courseid,$domain,$username)=@_;
9441: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
9442: return "$num1:$num2";
9443: }
9444:
9445: sub rndseed_CODE_64bit {
9446: my ($symb,$courseid,$domain,$username)=@_;
9447: {
9448: use integer;
9449: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9450: my $symbseed=numval2($symb);
9451: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9452: my $CODEseed=numval(&getCODE());
9453: my $courseseed=unpack("%32S*",$courseid.' ');
9454: my $num1=$symbseed+$CODEchck;
9455: my $num2=$CODEseed+$courseseed+$symbchck;
9456: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9457: #&logthis("rndseed :$num1:$num2:$symb");
9458: if ($_64bit) { $num1=(($num1<<32)>>32); }
9459: if ($_64bit) { $num2=(($num2<<32)>>32); }
9460: return "$num1:$num2";
9461: }
9462: }
9463:
9464: sub rndseed_CODE_64bit4 {
9465: my ($symb,$courseid,$domain,$username)=@_;
9466: {
9467: use integer;
9468: my $symbchck=unpack("%32S*",$symb.' ') << 16;
9469: my $symbseed=numval3($symb);
9470: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
9471: my $CODEseed=numval3(&getCODE());
9472: my $courseseed=unpack("%32S*",$courseid.' ');
9473: my $num1=$symbseed+$CODEchck;
9474: my $num2=$CODEseed+$courseseed+$symbchck;
9475: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
9476: #&logthis("rndseed :$num1:$num2:$symb");
9477: if ($_64bit) { $num1=(($num1<<32)>>32); }
9478: if ($_64bit) { $num2=(($num2<<32)>>32); }
9479: return "$num1:$num2";
9480: }
9481: }
9482:
9483: sub rndseed_CODE_64bit5 {
9484: my ($symb,$courseid,$domain,$username)=@_;
9485: my $code = &getCODE();
9486: my ($num1,$num2)=&digest("$symb,$courseid,$code");
9487: return "$num1:$num2";
9488: }
9489:
9490: sub setup_random_from_rndseed {
9491: my ($rndseed)=@_;
9492: if ($rndseed =~/([,:])/) {
9493: my ($num1,$num2)=split(/[,:]/,$rndseed);
9494: &Math::Random::random_set_seed(abs($num1),abs($num2));
9495: } else {
9496: &Math::Random::random_set_seed_from_phrase($rndseed);
9497: }
9498: }
9499:
9500: sub latest_receipt_algorithm_id {
9501: return 'receipt3';
9502: }
9503:
9504: sub recunique {
9505: my $fucourseid=shift;
9506: my $unique;
9507: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
9508: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9509: $unique=$env{"course.$fucourseid.internal.encseed"};
9510: } else {
9511: $unique=$perlvar{'lonReceipt'};
9512: }
9513: return unpack("%32C*",$unique);
9514: }
9515:
9516: sub recprefix {
9517: my $fucourseid=shift;
9518: my $prefix;
9519: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
9520: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
9521: $prefix=$env{"course.$fucourseid.internal.encpref"};
9522: } else {
9523: $prefix=$perlvar{'lonHostID'};
9524: }
9525: return unpack("%32C*",$prefix);
9526: }
9527:
9528: sub ireceipt {
9529: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
9530:
9531: my $return =&recprefix($fucourseid).'-';
9532:
9533: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
9534: $env{'request.state'} eq 'construct') {
9535: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
9536: return $return;
9537: }
9538:
9539: my $cuname=unpack("%32C*",$funame);
9540: my $cudom=unpack("%32C*",$fudom);
9541: my $cucourseid=unpack("%32C*",$fucourseid);
9542: my $cusymb=unpack("%32C*",$fusymb);
9543: my $cunique=&recunique($fucourseid);
9544: my $cpart=unpack("%32S*",$part);
9545: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
9546:
9547: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
9548:
9549: $return.= ($cunique%$cuname+
9550: $cunique%$cudom+
9551: $cusymb%$cuname+
9552: $cusymb%$cudom+
9553: $cucourseid%$cuname+
9554: $cucourseid%$cudom+
9555: $cpart%$cuname+
9556: $cpart%$cudom);
9557: } else {
9558: $return.= ($cunique%$cuname+
9559: $cunique%$cudom+
9560: $cusymb%$cuname+
9561: $cusymb%$cudom+
9562: $cucourseid%$cuname+
9563: $cucourseid%$cudom);
9564: }
9565: return $return;
9566: }
9567:
9568: sub receipt {
9569: my ($part)=@_;
9570: my ($symb,$courseid,$domain,$name) = &whichuser();
9571: return &ireceipt($name,$domain,$courseid,$symb,$part);
9572: }
9573:
9574: sub whichuser {
9575: my ($passedsymb)=@_;
9576: my ($symb,$courseid,$domain,$name,$publicuser);
9577: if (defined($env{'form.grade_symb'})) {
9578: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
9579: my $allowed=&allowed('vgr',$tmp_courseid);
9580: if (!$allowed &&
9581: exists($env{'request.course.sec'}) &&
9582: $env{'request.course.sec'} !~ /^\s*$/) {
9583: $allowed=&allowed('vgr',$tmp_courseid.
9584: '/'.$env{'request.course.sec'});
9585: }
9586: if ($allowed) {
9587: ($symb)=&get_env_multiple('form.grade_symb');
9588: $courseid=$tmp_courseid;
9589: ($domain)=&get_env_multiple('form.grade_domain');
9590: ($name)=&get_env_multiple('form.grade_username');
9591: return ($symb,$courseid,$domain,$name,$publicuser);
9592: }
9593: }
9594: if (!$passedsymb) {
9595: $symb=&symbread();
9596: } else {
9597: $symb=$passedsymb;
9598: }
9599: $courseid=$env{'request.course.id'};
9600: $domain=$env{'user.domain'};
9601: $name=$env{'user.name'};
9602: if ($name eq 'public' && $domain eq 'public') {
9603: if (!defined($env{'form.username'})) {
9604: $env{'form.username'}.=time.rand(10000000);
9605: }
9606: $name.=$env{'form.username'};
9607: }
9608: return ($symb,$courseid,$domain,$name,$publicuser);
9609:
9610: }
9611:
9612: # ------------------------------------------------------------ Serves up a file
9613: # returns either the contents of the file or
9614: # -1 if the file doesn't exist
9615: #
9616: # if the target is a file that was uploaded via DOCS,
9617: # a check will be made to see if a current copy exists on the local server,
9618: # if it does this will be served, otherwise a copy will be retrieved from
9619: # the home server for the course and stored in /home/httpd/html/userfiles on
9620: # the local server.
9621:
9622: sub getfile {
9623: my ($file) = @_;
9624: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9625: &repcopy($file);
9626: return &readfile($file);
9627: }
9628:
9629: sub repcopy_userfile {
9630: my ($file)=@_;
9631: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
9632: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
9633: my ($cdom,$cnum,$filename) =
9634: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
9635: my $uri="/uploaded/$cdom/$cnum/$filename";
9636: if (-e "$file") {
9637: # we already have a local copy, check it out
9638: my @fileinfo = stat($file);
9639: my $rtncode;
9640: my $info;
9641: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
9642: if ($lwpresp ne 'ok') {
9643: # there is no such file anymore, even though we had a local copy
9644: if ($rtncode eq '404') {
9645: unlink($file);
9646: }
9647: return -1;
9648: }
9649: if ($info < $fileinfo[9]) {
9650: # nice, the file we have is up-to-date, just say okay
9651: return 'ok';
9652: } else {
9653: # the file is outdated, get rid of it
9654: unlink($file);
9655: }
9656: }
9657: # one way or the other, at this point, we don't have the file
9658: # construct the correct path for the file
9659: my @parts = ($cdom,$cnum);
9660: if ($filename =~ m|^(.+)/[^/]+$|) {
9661: push @parts, split(/\//,$1);
9662: }
9663: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
9664: foreach my $part (@parts) {
9665: $path .= '/'.$part;
9666: if (!-e $path) {
9667: mkdir($path,0770);
9668: }
9669: }
9670: # now the path exists for sure
9671: # get a user agent
9672: my $ua=new LWP::UserAgent;
9673: my $transferfile=$file.'.in.transfer';
9674: # FIXME: this should flock
9675: if (-e $transferfile) { return 'ok'; }
9676: my $request;
9677: $uri=~s/^\///;
9678: my $homeserver = &homeserver($cnum,$cdom);
9679: my $protocol = $protocol{$homeserver};
9680: $protocol = 'http' if ($protocol ne 'https');
9681: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
9682: my $response=$ua->request($request,$transferfile);
9683: # did it work?
9684: if ($response->is_error()) {
9685: unlink($transferfile);
9686: &logthis("Userfile repcopy failed for $uri");
9687: return -1;
9688: }
9689: # worked, rename the transfer file
9690: rename($transferfile,$file);
9691: return 'ok';
9692: }
9693:
9694: sub tokenwrapper {
9695: my $uri=shift;
9696: $uri=~s|^https?\://([^/]+)||;
9697: $uri=~s|^/||;
9698: $env{'user.environment'}=~/\/([^\/]+)\.id/;
9699: my $token=$1;
9700: my (undef,$udom,$uname,$file)=split('/',$uri,4);
9701: if ($udom && $uname && $file) {
9702: $file=~s|(\?\.*)*$||;
9703: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
9704: my $homeserver = &homeserver($uname,$udom);
9705: my $protocol = $protocol{$homeserver};
9706: $protocol = 'http' if ($protocol ne 'https');
9707: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
9708: (($uri=~/\?/)?'&':'?').'token='.$token.
9709: '&tokenissued='.$perlvar{'lonHostID'};
9710: } else {
9711: return '/adm/notfound.html';
9712: }
9713: }
9714:
9715: # call with reqtype HEAD: get last modification time
9716: # call with reqtype GET: get the file contents
9717: # Do not call this with reqtype GET for large files! It loads everything into memory
9718: #
9719: sub getuploaded {
9720: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
9721: $uri=~s/^\///;
9722: my $homeserver = &homeserver($cnum,$cdom);
9723: my $protocol = $protocol{$homeserver};
9724: $protocol = 'http' if ($protocol ne 'https');
9725: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
9726: my $ua=new LWP::UserAgent;
9727: my $request=new HTTP::Request($reqtype,$uri);
9728: my $response=$ua->request($request);
9729: $$rtncode = $response->code;
9730: if (! $response->is_success()) {
9731: return 'failed';
9732: }
9733: if ($reqtype eq 'HEAD') {
9734: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
9735: } elsif ($reqtype eq 'GET') {
9736: $$info = $response->content;
9737: }
9738: return 'ok';
9739: }
9740:
9741: sub readfile {
9742: my $file = shift;
9743: if ( (! -e $file ) || ($file eq '') ) { return -1; };
9744: my $fh;
9745: open($fh,"<$file");
9746: my $a='';
9747: while (my $line = <$fh>) { $a .= $line; }
9748: return $a;
9749: }
9750:
9751: sub filelocation {
9752: my ($dir,$file) = @_;
9753: my $location;
9754: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
9755:
9756: if ($file =~ m-^/adm/-) {
9757: $file=~s-^/adm/wrapper/-/-;
9758: $file=~s-^/adm/coursedocs/showdoc/-/-;
9759: }
9760:
9761: if ($file=~m:^/~:) { # is a contruction space reference
9762: $location = $file;
9763: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
9764: } elsif ($file=~m{^/home/$match_username/public_html/}) {
9765: # is a correct contruction space reference
9766: $location = $file;
9767: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
9768: $location = $file;
9769: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
9770: my ($udom,$uname,$filename)=
9771: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
9772: my $home=&homeserver($uname,$udom);
9773: my $is_me=0;
9774: my @ids=¤t_machine_ids();
9775: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
9776: if ($is_me) {
9777: $location=&propath($udom,$uname).'/userfiles/'.$filename;
9778: } else {
9779: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
9780: $udom.'/'.$uname.'/'.$filename;
9781: }
9782: } elsif ($file =~ m-^/adm/-) {
9783: $location = $perlvar{'lonDocRoot'}.'/'.$file;
9784: } else {
9785: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9786: $file=~s:^/res/:/:;
9787: if ( !( $file =~ m:^/:) ) {
9788: $location = $dir. '/'.$file;
9789: } else {
9790: $location = '/home/httpd/html/res'.$file;
9791: }
9792: }
9793: $location=~s://+:/:g; # remove duplicate /
9794: while ($location=~m{/\.\./}) {
9795: if ($location =~ m{/[^/]+/\.\./}) {
9796: $location=~ s{/[^/]+/\.\./}{/}g;
9797: } else {
9798: $location=~ s{/\.\./}{/}g;
9799: }
9800: } #remove dir/..
9801: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
9802: return $location;
9803: }
9804:
9805: sub hreflocation {
9806: my ($dir,$file)=@_;
9807: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
9808: $file=filelocation($dir,$file);
9809: } elsif ($file=~m-^/adm/-) {
9810: $file=~s-^/adm/wrapper/-/-;
9811: $file=~s-^/adm/coursedocs/showdoc/-/-;
9812: }
9813: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
9814: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
9815: } elsif ($file=~m-/home/($match_username)/public_html/-) {
9816: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
9817: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
9818: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
9819: -/uploaded/$1/$2/-x;
9820: }
9821: if ($file=~ m{^/userfiles/}) {
9822: $file =~ s{^/userfiles/}{/uploaded/};
9823: }
9824: return $file;
9825: }
9826:
9827: sub current_machine_domains {
9828: return &machine_domains(&hostname($perlvar{'lonHostID'}));
9829: }
9830:
9831: sub machine_domains {
9832: my ($hostname) = @_;
9833: my @domains;
9834: my %hostname = &all_hostnames();
9835: while( my($id, $name) = each(%hostname)) {
9836: # &logthis("-$id-$name-$hostname-");
9837: if ($hostname eq $name) {
9838: push(@domains,&host_domain($id));
9839: }
9840: }
9841: return @domains;
9842: }
9843:
9844: sub current_machine_ids {
9845: return &machine_ids(&hostname($perlvar{'lonHostID'}));
9846: }
9847:
9848: sub machine_ids {
9849: my ($hostname) = @_;
9850: $hostname ||= &hostname($perlvar{'lonHostID'});
9851: my @ids;
9852: my %name_to_host = &all_names();
9853: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
9854: return @{ $name_to_host{$hostname} };
9855: }
9856: return;
9857: }
9858:
9859: sub additional_machine_domains {
9860: my @domains;
9861: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
9862: while( my $line = <$fh>) {
9863: $line =~ s/\s//g;
9864: push(@domains,$line);
9865: }
9866: return @domains;
9867: }
9868:
9869: sub default_login_domain {
9870: my $domain = $perlvar{'lonDefDomain'};
9871: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
9872: foreach my $posdom (¤t_machine_domains(),
9873: &additional_machine_domains()) {
9874: if (lc($posdom) eq lc($testdomain)) {
9875: $domain=$posdom;
9876: last;
9877: }
9878: }
9879: return $domain;
9880: }
9881:
9882: # ------------------------------------------------------------- Declutters URLs
9883:
9884: sub declutter {
9885: my $thisfn=shift;
9886: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
9887: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
9888: $thisfn=~s/^\///;
9889: $thisfn=~s|^adm/wrapper/||;
9890: $thisfn=~s|^adm/coursedocs/showdoc/||;
9891: $thisfn=~s/^res\///;
9892: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
9893: $thisfn=~s/\?.+$//;
9894: }
9895: return $thisfn;
9896: }
9897:
9898: # ------------------------------------------------------------- Clutter up URLs
9899:
9900: sub clutter {
9901: my $thisfn='/'.&declutter(shift);
9902: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
9903: || $thisfn =~ m{^/adm/(includes|pages)} ) {
9904: $thisfn='/res'.$thisfn;
9905: }
9906: if ($thisfn !~m|^/adm|) {
9907: if ($thisfn =~ m|^/ext/|) {
9908: $thisfn='/adm/wrapper'.$thisfn;
9909: } else {
9910: my ($ext) = ($thisfn =~ /\.(\w+)$/);
9911: my $embstyle=&Apache::loncommon::fileembstyle($ext);
9912: if ($embstyle eq 'ssi'
9913: || ($embstyle eq 'hdn')
9914: || ($embstyle eq 'rat')
9915: || ($embstyle eq 'prv')
9916: || ($embstyle eq 'ign')) {
9917: #do nothing with these
9918: } elsif (($embstyle eq 'img')
9919: || ($embstyle eq 'emb')
9920: || ($embstyle eq 'wrp')) {
9921: $thisfn='/adm/wrapper'.$thisfn;
9922: } elsif ($embstyle eq 'unk'
9923: && $thisfn!~/\.(sequence|page)$/) {
9924: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
9925: } else {
9926: # &logthis("Got a blank emb style");
9927: }
9928: }
9929: }
9930: return $thisfn;
9931: }
9932:
9933: sub clutter_with_no_wrapper {
9934: my $uri = &clutter(shift);
9935: if ($uri =~ m-^/adm/-) {
9936: $uri =~ s-^/adm/wrapper/-/-;
9937: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
9938: }
9939: return $uri;
9940: }
9941:
9942: sub freeze_escape {
9943: my ($value)=@_;
9944: if (ref($value)) {
9945: $value=&nfreeze($value);
9946: return '__FROZEN__'.&escape($value);
9947: }
9948: return &escape($value);
9949: }
9950:
9951:
9952: sub thaw_unescape {
9953: my ($value)=@_;
9954: if ($value =~ /^__FROZEN__/) {
9955: substr($value,0,10,undef);
9956: $value=&unescape($value);
9957: return &thaw($value);
9958: }
9959: return &unescape($value);
9960: }
9961:
9962: sub correct_line_ends {
9963: my ($result)=@_;
9964: $$result =~s/\r\n/\n/mg;
9965: $$result =~s/\r/\n/mg;
9966: }
9967: # ================================================================ Main Program
9968:
9969: sub goodbye {
9970: &logthis("Starting Shut down");
9971: #not converted to using infrastruture and probably shouldn't be
9972: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
9973: #converted
9974: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
9975: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
9976: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
9977: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
9978: #1.1 only
9979: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
9980: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
9981: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
9982: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
9983: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
9984: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
9985: &logthis(sprintf("%-20s is %s",'hits',$hits));
9986: &flushcourselogs();
9987: &logthis("Shutting down");
9988: }
9989:
9990: sub get_dns {
9991: my ($url,$func,$ignore_cache) = @_;
9992: if (!$ignore_cache) {
9993: my ($content,$cached)=
9994: &Apache::lonnet::is_cached_new('dns',$url);
9995: if ($cached) {
9996: &$func($content);
9997: return;
9998: }
9999: }
10000:
10001: my %alldns;
10002: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10003: foreach my $dns (<$config>) {
10004: next if ($dns !~ /^\^(\S*)/x);
10005: my $line = $1;
10006: my ($host,$protocol) = split(/:/,$line);
10007: if ($protocol ne 'https') {
10008: $protocol = 'http';
10009: }
10010: $alldns{$host} = $protocol;
10011: }
10012: while (%alldns) {
10013: my ($dns) = keys(%alldns);
10014: my $ua=new LWP::UserAgent;
10015: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10016: my $response=$ua->request($request);
10017: delete($alldns{$dns});
10018: next if ($response->is_error());
10019: my @content = split("\n",$response->content);
10020: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10021: &$func(\@content);
10022: return;
10023: }
10024: close($config);
10025: my $which = (split('/',$url))[3];
10026: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10027: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10028: my @content = <$config>;
10029: &$func(\@content);
10030: return;
10031: }
10032: # ------------------------------------------------------------ Read domain file
10033: {
10034: my $loaded;
10035: my %domain;
10036:
10037: sub parse_domain_tab {
10038: my ($lines) = @_;
10039: foreach my $line (@$lines) {
10040: next if ($line =~ /^(\#|\s*$ )/x);
10041:
10042: chomp($line);
10043: my ($name,@elements) = split(/:/,$line,9);
10044: my %this_domain;
10045: foreach my $field ('description', 'auth_def', 'auth_arg_def',
10046: 'lang_def', 'city', 'longi', 'lati',
10047: 'primary') {
10048: $this_domain{$field} = shift(@elements);
10049: }
10050: $domain{$name} = \%this_domain;
10051: }
10052: }
10053:
10054: sub reset_domain_info {
10055: undef($loaded);
10056: undef(%domain);
10057: }
10058:
10059: sub load_domain_tab {
10060: my ($ignore_cache) = @_;
10061: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
10062: my $fh;
10063: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
10064: my @lines = <$fh>;
10065: &parse_domain_tab(\@lines);
10066: }
10067: close($fh);
10068: $loaded = 1;
10069: }
10070:
10071: sub domain {
10072: &load_domain_tab() if (!$loaded);
10073:
10074: my ($name,$what) = @_;
10075: return if ( !exists($domain{$name}) );
10076:
10077: if (!$what) {
10078: return $domain{$name}{'description'};
10079: }
10080: return $domain{$name}{$what};
10081: }
10082:
10083: sub domain_info {
10084: &load_domain_tab() if (!$loaded);
10085: return %domain;
10086: }
10087:
10088: }
10089:
10090:
10091: # ------------------------------------------------------------- Read hosts file
10092: {
10093: my %hostname;
10094: my %hostdom;
10095: my %libserv;
10096: my $loaded;
10097: my %name_to_host;
10098: my %internetdom;
10099: my %LC_dns_serv;
10100:
10101: sub parse_hosts_tab {
10102: my ($file) = @_;
10103: foreach my $configline (@$file) {
10104: next if ($configline =~ /^(\#|\s*$ )/x);
10105: chomp($configline);
10106: if ($configline =~ /^\^/) {
10107: if ($configline =~ /^\^([\w.\-]+)/) {
10108: $LC_dns_serv{$1} = 1;
10109: }
10110: next;
10111: }
10112: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
10113: $name=~s/\s//g;
10114: if ($id && $domain && $role && $name) {
10115: $hostname{$id}=$name;
10116: push(@{$name_to_host{$name}}, $id);
10117: $hostdom{$id}=$domain;
10118: if ($role eq 'library') { $libserv{$id}=$name; }
10119: if (defined($protocol)) {
10120: if ($protocol eq 'https') {
10121: $protocol{$id} = $protocol;
10122: } else {
10123: $protocol{$id} = 'http';
10124: }
10125: } else {
10126: $protocol{$id} = 'http';
10127: }
10128: if (defined($intdom)) {
10129: $internetdom{$id} = $intdom;
10130: }
10131: }
10132: }
10133: }
10134:
10135: sub reset_hosts_info {
10136: &purge_remembered();
10137: &reset_domain_info();
10138: &reset_hosts_ip_info();
10139: undef(%name_to_host);
10140: undef(%hostname);
10141: undef(%hostdom);
10142: undef(%libserv);
10143: undef($loaded);
10144: }
10145:
10146: sub load_hosts_tab {
10147: my ($ignore_cache) = @_;
10148: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
10149: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10150: my @config = <$config>;
10151: &parse_hosts_tab(\@config);
10152: close($config);
10153: $loaded=1;
10154: }
10155:
10156: sub hostname {
10157: &load_hosts_tab() if (!$loaded);
10158:
10159: my ($lonid) = @_;
10160: return $hostname{$lonid};
10161: }
10162:
10163: sub all_hostnames {
10164: &load_hosts_tab() if (!$loaded);
10165:
10166: return %hostname;
10167: }
10168:
10169: sub all_names {
10170: &load_hosts_tab() if (!$loaded);
10171:
10172: return %name_to_host;
10173: }
10174:
10175: sub all_host_domain {
10176: &load_hosts_tab() if (!$loaded);
10177: return %hostdom;
10178: }
10179:
10180: sub is_library {
10181: &load_hosts_tab() if (!$loaded);
10182:
10183: return exists($libserv{$_[0]});
10184: }
10185:
10186: sub all_library {
10187: &load_hosts_tab() if (!$loaded);
10188:
10189: return %libserv;
10190: }
10191:
10192: sub unique_library {
10193: #2x reverse removes all hostnames that appear more than once
10194: my %unique = reverse &all_library();
10195: return reverse %unique;
10196: }
10197:
10198: sub get_servers {
10199: &load_hosts_tab() if (!$loaded);
10200:
10201: my ($domain,$type) = @_;
10202: my %possible_hosts = ($type eq 'library') ? %libserv
10203: : %hostname;
10204: my %result;
10205: if (ref($domain) eq 'ARRAY') {
10206: while ( my ($host,$hostname) = each(%possible_hosts)) {
10207: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
10208: $result{$host} = $hostname;
10209: }
10210: }
10211: } else {
10212: while ( my ($host,$hostname) = each(%possible_hosts)) {
10213: if ($hostdom{$host} eq $domain) {
10214: $result{$host} = $hostname;
10215: }
10216: }
10217: }
10218: return %result;
10219: }
10220:
10221: sub get_unique_servers {
10222: my %unique = reverse &get_servers(@_);
10223: return reverse %unique;
10224: }
10225:
10226: sub host_domain {
10227: &load_hosts_tab() if (!$loaded);
10228:
10229: my ($lonid) = @_;
10230: return $hostdom{$lonid};
10231: }
10232:
10233: sub all_domains {
10234: &load_hosts_tab() if (!$loaded);
10235:
10236: my %seen;
10237: my @uniq = grep(!$seen{$_}++, values(%hostdom));
10238: return @uniq;
10239: }
10240:
10241: sub internet_dom {
10242: &load_hosts_tab() if (!$loaded);
10243:
10244: my ($lonid) = @_;
10245: return $internetdom{$lonid};
10246: }
10247:
10248: sub is_LC_dns {
10249: &load_hosts_tab() if (!$loaded);
10250:
10251: my ($hostname) = @_;
10252: return exists($LC_dns_serv{$hostname});
10253: }
10254:
10255: }
10256:
10257: {
10258: my %iphost;
10259: my %name_to_ip;
10260: my %lonid_to_ip;
10261:
10262: sub get_hosts_from_ip {
10263: my ($ip) = @_;
10264: my %iphosts = &get_iphost();
10265: if (ref($iphosts{$ip})) {
10266: return @{$iphosts{$ip}};
10267: }
10268: return;
10269: }
10270:
10271: sub reset_hosts_ip_info {
10272: undef(%iphost);
10273: undef(%name_to_ip);
10274: undef(%lonid_to_ip);
10275: }
10276:
10277: sub get_host_ip {
10278: my ($lonid) = @_;
10279: if (exists($lonid_to_ip{$lonid})) {
10280: return $lonid_to_ip{$lonid};
10281: }
10282: my $name=&hostname($lonid);
10283: my $ip = gethostbyname($name);
10284: return if (!$ip || length($ip) ne 4);
10285: $ip=inet_ntoa($ip);
10286: $name_to_ip{$name} = $ip;
10287: $lonid_to_ip{$lonid} = $ip;
10288: return $ip;
10289: }
10290:
10291: sub get_iphost {
10292: my ($ignore_cache) = @_;
10293:
10294: if (!$ignore_cache) {
10295: if (%iphost) {
10296: return %iphost;
10297: }
10298: my ($ip_info,$cached)=
10299: &Apache::lonnet::is_cached_new('iphost','iphost');
10300: if ($cached) {
10301: %iphost = %{$ip_info->[0]};
10302: %name_to_ip = %{$ip_info->[1]};
10303: %lonid_to_ip = %{$ip_info->[2]};
10304: return %iphost;
10305: }
10306: }
10307:
10308: # get yesterday's info for fallback
10309: my %old_name_to_ip;
10310: my ($ip_info,$cached)=
10311: &Apache::lonnet::is_cached_new('iphost','iphost');
10312: if ($cached) {
10313: %old_name_to_ip = %{$ip_info->[1]};
10314: }
10315:
10316: my %name_to_host = &all_names();
10317: foreach my $name (keys(%name_to_host)) {
10318: my $ip;
10319: if (!exists($name_to_ip{$name})) {
10320: $ip = gethostbyname($name);
10321: if (!$ip || length($ip) ne 4) {
10322: if (defined($old_name_to_ip{$name})) {
10323: $ip = $old_name_to_ip{$name};
10324: &logthis("Can't find $name defaulting to old $ip");
10325: } else {
10326: &logthis("Name $name no IP found");
10327: next;
10328: }
10329: } else {
10330: $ip=inet_ntoa($ip);
10331: }
10332: $name_to_ip{$name} = $ip;
10333: } else {
10334: $ip = $name_to_ip{$name};
10335: }
10336: foreach my $id (@{ $name_to_host{$name} }) {
10337: $lonid_to_ip{$id} = $ip;
10338: }
10339: push(@{$iphost{$ip}},@{$name_to_host{$name}});
10340: }
10341: &Apache::lonnet::do_cache_new('iphost','iphost',
10342: [\%iphost,\%name_to_ip,\%lonid_to_ip],
10343: 48*60*60);
10344:
10345: return %iphost;
10346: }
10347:
10348: #
10349: # Given a DNS returns the loncapa host name for that DNS
10350: #
10351: sub host_from_dns {
10352: my ($dns) = @_;
10353: my @hosts;
10354: my $ip;
10355:
10356: if (exists($name_to_ip{$dns})) {
10357: $ip = $name_to_ip{$dns};
10358: }
10359: if (!$ip) {
10360: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
10361: if (length($ip) == 4) {
10362: $ip = &IO::Socket::inet_ntoa($ip);
10363: }
10364: }
10365: if ($ip) {
10366: @hosts = get_hosts_from_ip($ip);
10367: return $hosts[0];
10368: }
10369: return undef;
10370: }
10371:
10372: sub get_internet_names {
10373: my ($lonid) = @_;
10374: return if ($lonid eq '');
10375: my ($idnref,$cached)=
10376: &Apache::lonnet::is_cached_new('internetnames',$lonid);
10377: if ($cached) {
10378: return $idnref;
10379: }
10380: my $ip = &get_host_ip($lonid);
10381: my @hosts = &get_hosts_from_ip($ip);
10382: my %iphost = &get_iphost();
10383: my (@idns,%seen);
10384: foreach my $id (@hosts) {
10385: my $dom = &host_domain($id);
10386: my $prim_id = &domain($dom,'primary');
10387: my $prim_ip = &get_host_ip($prim_id);
10388: next if ($seen{$prim_ip});
10389: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
10390: foreach my $id (@{$iphost{$prim_ip}}) {
10391: my $intdom = &internet_dom($id);
10392: unless (grep(/^\Q$intdom\E$/,@idns)) {
10393: push(@idns,$intdom);
10394: }
10395: }
10396: }
10397: $seen{$prim_ip} = 1;
10398: }
10399: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
10400: }
10401:
10402: }
10403:
10404: sub all_loncaparevs {
10405: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
10406: }
10407:
10408: BEGIN {
10409:
10410: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
10411: unless ($readit) {
10412: {
10413: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
10414: %perlvar = (%perlvar,%{$configvars});
10415: }
10416:
10417:
10418: # ------------------------------------------------------ Read spare server file
10419: {
10420: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
10421:
10422: while (my $configline=<$config>) {
10423: chomp($configline);
10424: if ($configline) {
10425: my ($host,$type) = split(':',$configline,2);
10426: if (!defined($type) || $type eq '') { $type = 'default' };
10427: push(@{ $spareid{$type} }, $host);
10428: }
10429: }
10430: close($config);
10431: }
10432: # ------------------------------------------------------------ Read permissions
10433: {
10434: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
10435:
10436: while (my $configline=<$config>) {
10437: chomp($configline);
10438: if ($configline) {
10439: my ($role,$perm)=split(/ /,$configline);
10440: if ($perm ne '') { $pr{$role}=$perm; }
10441: }
10442: }
10443: close($config);
10444: }
10445:
10446: # -------------------------------------------- Read plain texts for permissions
10447: {
10448: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
10449:
10450: while (my $configline=<$config>) {
10451: chomp($configline);
10452: if ($configline) {
10453: my ($short,@plain)=split(/:/,$configline);
10454: %{$prp{$short}} = ();
10455: if (@plain > 0) {
10456: $prp{$short}{'std'} = $plain[0];
10457: for (my $i=1; $i<@plain; $i++) {
10458: $prp{$short}{'alt'.$i} = $plain[$i];
10459: }
10460: }
10461: }
10462: }
10463: close($config);
10464: }
10465:
10466: # ---------------------------------------------------------- Read package table
10467: {
10468: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
10469:
10470: while (my $configline=<$config>) {
10471: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
10472: chomp($configline);
10473: my ($short,$plain)=split(/:/,$configline);
10474: my ($pack,$name)=split(/\&/,$short);
10475: if ($plain ne '') {
10476: $packagetab{$pack.'&'.$name.'&name'}=$name;
10477: $packagetab{$short}=$plain;
10478: }
10479: }
10480: close($config);
10481: }
10482:
10483: # ---------------------------------------------------------- Read loncaparev table
10484: {
10485: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
10486: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
10487: while (my $configline=<$config>) {
10488: chomp($configline);
10489: my ($hostid,$loncaparev)=split(/:/,$configline);
10490: $loncaparevs{$hostid}=$loncaparev;
10491: }
10492: close($config);
10493: }
10494: }
10495: }
10496:
10497: # ---------------------------------------------------------- Read serverhostID table
10498: {
10499: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
10500: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
10501: while (my $configline=<$config>) {
10502: chomp($configline);
10503: my ($name,$id)=split(/:/,$configline);
10504: $serverhomeIDs{$name}=$id;
10505: }
10506: close($config);
10507: }
10508: }
10509: }
10510:
10511: {
10512: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
10513: if (-e $file) {
10514: my $parser = HTML::LCParser->new($file);
10515: while (my $token = $parser->get_token()) {
10516: if ($token->[0] eq 'S') {
10517: my $item = $token->[1];
10518: my $name = $token->[2]{'name'};
10519: my $value = $token->[2]{'value'};
10520: if ($item ne '' && $name ne '' && $value ne '') {
10521: my $release = $parser->get_text();
10522: $release =~ s/(^\s*|\s*$ )//gx;
10523: $needsrelease{$item.':'.$name.':'.$value} = $release;
10524: }
10525: }
10526: }
10527: }
10528: }
10529:
10530: # ------------- set up temporary directory
10531: {
10532: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
10533:
10534: }
10535:
10536: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
10537: 'compress_threshold'=> 20_000,
10538: });
10539:
10540: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
10541: $dumpcount=0;
10542: $locknum=0;
10543:
10544: &logtouch();
10545: &logthis('<font color="yellow">INFO: Read configuration</font>');
10546: $readit=1;
10547: {
10548: use integer;
10549: my $test=(2**32)+1;
10550: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
10551: &logthis(" Detected 64bit platform ($_64bit)");
10552: }
10553: }
10554: }
10555:
10556: 1;
10557: __END__
10558:
10559: =pod
10560:
10561: =head1 NAME
10562:
10563: Apache::lonnet - Subroutines to ask questions about things in the network.
10564:
10565: =head1 SYNOPSIS
10566:
10567: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
10568:
10569: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
10570:
10571: Common parameters:
10572:
10573: =over 4
10574:
10575: =item *
10576:
10577: $uname : an internal username (if $cname expecting a course Id specifically)
10578:
10579: =item *
10580:
10581: $udom : a domain (if $cdom expecting a course's domain specifically)
10582:
10583: =item *
10584:
10585: $symb : a resource instance identifier
10586:
10587: =item *
10588:
10589: $namespace : the name of a .db file that contains the data needed or
10590: being set.
10591:
10592: =back
10593:
10594: =head1 OVERVIEW
10595:
10596: lonnet provides subroutines which interact with the
10597: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
10598: about classes, users, and resources.
10599:
10600: For many of these objects you can also use this to store data about
10601: them or modify them in various ways.
10602:
10603: =head2 Symbs
10604:
10605: To identify a specific instance of a resource, LON-CAPA uses symbols
10606: or "symbs"X<symb>. These identifiers are built from the URL of the
10607: map, the resource number of the resource in the map, and the URL of
10608: the resource itself. The latter is somewhat redundant, but might help
10609: if maps change.
10610:
10611: An example is
10612:
10613: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
10614:
10615: The respective map entry is
10616:
10617: <resource id="19" src="/res/msu/korte/tests/part12.problem"
10618: title="Problem 2">
10619: </resource>
10620:
10621: Symbs are used by the random number generator, as well as to store and
10622: restore data specific to a certain instance of for example a problem.
10623:
10624: =head2 Storing And Retrieving Data
10625:
10626: X<store()>X<cstore()>X<restore()>Three of the most important functions
10627: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
10628: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
10629: is is the non-critical message twin of cstore. These functions are for
10630: handlers to store a perl hash to a user's permanent data space in an
10631: easy manner, and to retrieve it again on another call. It is expected
10632: that a handler would use this once at the beginning to retrieve data,
10633: and then again once at the end to send only the new data back.
10634:
10635: The data is stored in the user's data directory on the user's
10636: homeserver under the ID of the course.
10637:
10638: The hash that is returned by restore will have all of the previous
10639: value for all of the elements of the hash.
10640:
10641: Example:
10642:
10643: #creating a hash
10644: my %hash;
10645: $hash{'foo'}='bar';
10646:
10647: #storing it
10648: &Apache::lonnet::cstore(\%hash);
10649:
10650: #changing a value
10651: $hash{'foo'}='notbar';
10652:
10653: #adding a new value
10654: $hash{'bar'}='foo';
10655: &Apache::lonnet::cstore(\%hash);
10656:
10657: #retrieving the hash
10658: my %history=&Apache::lonnet::restore();
10659:
10660: #print the hash
10661: foreach my $key (sort(keys(%history))) {
10662: print("\%history{$key} = $history{$key}");
10663: }
10664:
10665: Will print out:
10666:
10667: %history{1:foo} = bar
10668: %history{1:keys} = foo:timestamp
10669: %history{1:timestamp} = 990455579
10670: %history{2:bar} = foo
10671: %history{2:foo} = notbar
10672: %history{2:keys} = foo:bar:timestamp
10673: %history{2:timestamp} = 990455580
10674: %history{bar} = foo
10675: %history{foo} = notbar
10676: %history{timestamp} = 990455580
10677: %history{version} = 2
10678:
10679: Note that the special hash entries C<keys>, C<version> and
10680: C<timestamp> were added to the hash. C<version> will be equal to the
10681: total number of versions of the data that have been stored. The
10682: C<timestamp> attribute will be the UNIX time the hash was
10683: stored. C<keys> is available in every historical section to list which
10684: keys were added or changed at a specific historical revision of a
10685: hash.
10686:
10687: B<Warning>: do not store the hash that restore returns directly. This
10688: will cause a mess since it will restore the historical keys as if the
10689: were new keys. I.E. 1:foo will become 1:1:foo etc.
10690:
10691: Calling convention:
10692:
10693: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
10694: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
10695:
10696: For more detailed information, see lonnet specific documentation.
10697:
10698: =head1 RETURN MESSAGES
10699:
10700: =over 4
10701:
10702: =item * B<con_lost>: unable to contact remote host
10703:
10704: =item * B<con_delayed>: unable to contact remote host, message will be delivered
10705: when the connection is brought back up
10706:
10707: =item * B<con_failed>: unable to contact remote host and unable to save message
10708: for later delivery
10709:
10710: =item * B<error:>: an error a occurred, a description of the error follows the :
10711:
10712: =item * B<no_such_host>: unable to fund a host associated with the user/domain
10713: that was requested
10714:
10715: =back
10716:
10717: =head1 PUBLIC SUBROUTINES
10718:
10719: =head2 Session Environment Functions
10720:
10721: =over 4
10722:
10723: =item *
10724: X<appenv()>
10725: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
10726: the user envirnoment file, and will be restored for each access this
10727: user makes during this session, also modifies the %env for the current
10728: process. Optional rolesarrayref - if defined contains a reference to an array
10729: of roles which are exempt from the restriction on modifying user.role entries
10730: in the user's environment.db and in %env.
10731:
10732: =item *
10733: X<delenv()>
10734: B<delenv($delthis,$regexp)>: removes all items from the session
10735: environment file that begin with $delthis. If the
10736: optional second arg - $regexp - is true, $delthis is treated as a
10737: regular expression, otherwise \Q$delthis\E is used.
10738: The values are also deleted from the current processes %env.
10739:
10740: =item * get_env_multiple($name)
10741:
10742: gets $name from the %env hash, it seemlessly handles the cases where multiple
10743: values may be defined and end up as an array ref.
10744:
10745: returns an array of values
10746:
10747: =back
10748:
10749: =head2 User Information
10750:
10751: =over 4
10752:
10753: =item *
10754: X<queryauthenticate()>
10755: B<queryauthenticate($uname,$udom)>: try to determine user's current
10756: authentication scheme
10757:
10758: =item *
10759: X<authenticate()>
10760: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
10761: authenticate user from domain's lib servers (first use the current
10762: one). C<$upass> should be the users password.
10763: $checkdefauth is optional (value is 1 if a check should be made to
10764: authenticate user using default authentication method, and allow
10765: account creation if username does not have account in the domain).
10766: $clientcancheckhost is optional (value is 1 if checking whether the
10767: server can host will occur on the client side in lonauth.pm).
10768:
10769: =item *
10770: X<homeserver()>
10771: B<homeserver($uname,$udom)>: find the server which has
10772: the user's directory and files (there must be only one), this caches
10773: the answer, and also caches if there is a borken connection.
10774:
10775: =item *
10776: X<idget()>
10777: B<idget($udom,@ids)>: find the usernames behind a list of IDs
10778: (IDs are a unique resource in a domain, there must be only 1 ID per
10779: username, and only 1 username per ID in a specific domain) (returns
10780: hash: id=>name,id=>name)
10781:
10782: =item *
10783: X<idrget()>
10784: B<idrget($udom,@unames)>: find the IDs behind a list of
10785: usernames (returns hash: name=>id,name=>id)
10786:
10787: =item *
10788: X<idput()>
10789: B<idput($udom,%ids)>: store away a list of names and associated IDs
10790:
10791: =item *
10792: X<rolesinit()>
10793: B<rolesinit($udom,$username,$authhost)>: get user privileges
10794:
10795: =item *
10796: X<getsection()>
10797: B<getsection($udom,$uname,$cname)>: finds the section of student in the
10798: course $cname, return section name/number or '' for "not in course"
10799: and '-1' for "no section"
10800:
10801: =item *
10802: X<userenvironment()>
10803: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
10804: passed in @what from the requested user's environment, returns a hash
10805:
10806: =item *
10807: X<userlog_query()>
10808: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
10809: activity.log file. %filters defines filters applied when parsing the
10810: log file. These can be start or end timestamps, or the type of action
10811: - log to look for Login or Logout events, check for Checkin or
10812: Checkout, role for role selection. The response is in the form
10813: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
10814: escaped strings of the action recorded in the activity.log file.
10815:
10816: =back
10817:
10818: =head2 User Roles
10819:
10820: =over 4
10821:
10822: =item *
10823:
10824: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
10825: F: full access
10826: U,I,K: authentication modes (cxx only)
10827: '': forbidden
10828: 1: user needs to choose course
10829: 2: browse allowed
10830: A: passphrase authentication needed
10831:
10832: =item *
10833:
10834: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
10835: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
10836: and course level
10837:
10838: =item *
10839:
10840: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
10841: (rolesplain.tab); plain text explanation of a user role term.
10842: $type is Course (default) or Community.
10843: If $forcedefault evaluates to true, text returned will be default
10844: text for $type. Otherwise, if this is a course, the text returned
10845: will be a custom name for the role (if defined in the course's
10846: environment). If no custom name is defined the default is returned.
10847:
10848: =item *
10849:
10850: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
10851: All arguments are optional. Returns a hash of a roles, either for
10852: co-author/assistant author roles for a user's Construction Space
10853: (default), or if $context is 'userroles', roles for the user himself,
10854: In the hash, keys are set to colon-separated $uname,$udom,$role, and
10855: (optionally) if $withsec is true, a fourth colon-separated item - $section.
10856: For each key, value is set to colon-separated start and end times for
10857: the role. If no username and domain are specified, will default to
10858: current user/domain. Types, roles, and roledoms are references to arrays
10859: of role statuses (active, future or previous), roles
10860: (e.g., cc,in, st etc.) and domains of the roles which can be used
10861: to restrict the list of roles reported. If no array ref is
10862: provided for types, will default to return only active roles.
10863:
10864: =back
10865:
10866: =head2 User Modification
10867:
10868: =over 4
10869:
10870: =item *
10871:
10872: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
10873: user for the level given by URL. Optional start and end dates (leave empty
10874: string or zero for "no date")
10875:
10876: =item *
10877:
10878: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
10879: change a users, password, possible return values are: ok,
10880: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
10881: refused
10882:
10883: =item *
10884:
10885: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
10886:
10887: =item *
10888:
10889: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
10890: $forceid,$desiredhome,$email,$inststatus,$candelete) :
10891:
10892: will update user information (firstname,middlename,lastname,generation,
10893: permanentemail), and if forceid is true, student/employee ID also.
10894: A user's institutional affiliation(s) can also be updated.
10895: User information fields will not be overwritten with empty entries
10896: unless the field is included in the $candelete array reference.
10897: This array is included when a single user is modified via "Manage Users",
10898: or when Autoupdate.pl is run by cron in a domain.
10899:
10900: =item *
10901:
10902: modifystudent
10903:
10904: modify a student's enrollment and identification information.
10905: The course id is resolved based on the current users environment.
10906: This means the envoking user must be a course coordinator or otherwise
10907: associated with a course.
10908:
10909: This call is essentially a wrapper for lonnet::modifyuser and
10910: lonnet::modify_student_enrollment
10911:
10912: Inputs:
10913:
10914: =over 4
10915:
10916: =item B<$udom> Student's loncapa domain
10917:
10918: =item B<$uname> Student's loncapa login name
10919:
10920: =item B<$uid> Student/Employee ID
10921:
10922: =item B<$umode> Student's authentication mode
10923:
10924: =item B<$upass> Student's password
10925:
10926: =item B<$first> Student's first name
10927:
10928: =item B<$middle> Student's middle name
10929:
10930: =item B<$last> Student's last name
10931:
10932: =item B<$gene> Student's generation
10933:
10934: =item B<$usec> Student's section in course
10935:
10936: =item B<$end> Unix time of the roles expiration
10937:
10938: =item B<$start> Unix time of the roles start date
10939:
10940: =item B<$forceid> If defined, allow $uid to be changed
10941:
10942: =item B<$desiredhome> server to use as home server for student
10943:
10944: =item B<$email> Student's permanent e-mail address
10945:
10946: =item B<$type> Type of enrollment (auto or manual)
10947:
10948: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
10949:
10950: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
10951:
10952: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
10953:
10954: =item B<$context> role change context (shown in User Management Logs display in a course)
10955:
10956: =item B<$inststatus> institutional status of user - : separated string of escaped status types
10957:
10958: =back
10959:
10960: =item *
10961:
10962: modify_student_enrollment
10963:
10964: Change a students enrollment status in a class. The environment variable
10965: 'role.request.course' must be defined for this function to proceed.
10966:
10967: Inputs:
10968:
10969: =over 4
10970:
10971: =item $udom, students domain
10972:
10973: =item $uname, students name
10974:
10975: =item $uid, students user id
10976:
10977: =item $first, students first name
10978:
10979: =item $middle
10980:
10981: =item $last
10982:
10983: =item $gene
10984:
10985: =item $usec
10986:
10987: =item $end
10988:
10989: =item $start
10990:
10991: =item $type
10992:
10993: =item $locktype
10994:
10995: =item $cid
10996:
10997: =item $selfenroll
10998:
10999: =item $context
11000:
11001: =back
11002:
11003:
11004: =item *
11005:
11006: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11007: custom role; give a custom role to a user for the level given by URL. Specify
11008: name and domain of role author, and role name
11009:
11010: =item *
11011:
11012: revokerole($udom,$uname,$url,$role) : revoke a role for url
11013:
11014: =item *
11015:
11016: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
11017:
11018: =back
11019:
11020: =head2 Course Infomation
11021:
11022: =over 4
11023:
11024: =item *
11025:
11026: coursedescription($courseid) : returns a hash of information about the
11027: specified course id, including all environment settings for the
11028: course, the description of the course will be in the hash under the
11029: key 'description'
11030:
11031: =item *
11032:
11033: resdata($name,$domain,$type,@which) : request for current parameter
11034: setting for a specific $type, where $type is either 'course' or 'user',
11035: @what should be a list of parameters to ask about. This routine caches
11036: answers for 5 minutes.
11037:
11038: =item *
11039:
11040: get_courseresdata($courseid, $domain) : dump the entire course resource
11041: data base, returning a hash that is keyed by the resource name and has
11042: values that are the resource value. I believe that the timestamps and
11043: versions are also returned.
11044:
11045:
11046: =back
11047:
11048: =head2 Course Modification
11049:
11050: =over 4
11051:
11052: =item *
11053:
11054: writecoursepref($courseid,%prefs) : write preferences (environment
11055: database) for a course
11056:
11057: =item *
11058:
11059: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
11060:
11061: =item *
11062:
11063: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
11064:
11065: =back
11066:
11067: =head2 Resource Subroutines
11068:
11069: =over 4
11070:
11071: =item *
11072:
11073: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
11074:
11075: =item *
11076:
11077: repcopy($filename) : subscribes to the requested file, and attempts to
11078: replicate from the owning library server, Might return
11079: 'unavailable', 'not_found', 'forbidden', 'ok', or
11080: 'bad_request', also attempts to grab the metadata for the
11081: resource. Expects the local filesystem pathname
11082: (/home/httpd/html/res/....)
11083:
11084: =back
11085:
11086: =head2 Resource Information
11087:
11088: =over 4
11089:
11090: =item *
11091:
11092: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
11093: a vairety of different possible values, $varname should be a request
11094: string, and the other parameters can be used to specify who and what
11095: one is asking about.
11096:
11097: Possible values for $varname are environment.lastname (or other item
11098: from the envirnment hash), user.name (or someother aspect about the
11099: user), resource.0.maxtries (or some other part and parameter of a
11100: resource)
11101:
11102: =item *
11103:
11104: directcondval($number) : get current value of a condition; reads from a state
11105: string
11106:
11107: =item *
11108:
11109: condval($condidx) : value of condition index based on state
11110:
11111: =item *
11112:
11113: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
11114: resource's metadata, $what should be either a specific key, or either
11115: 'keys' (to get a list of possible keys) or 'packages' to get a list of
11116: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
11117:
11118: this function automatically caches all requests
11119:
11120: =item *
11121:
11122: metadata_query($query,$custom,$customshow) : make a metadata query against the
11123: network of library servers; returns file handle of where SQL and regex results
11124: will be stored for query
11125:
11126: =item *
11127:
11128: symbread($filename) : return symbolic list entry (filename argument optional);
11129: returns the data handle
11130:
11131: =item *
11132:
11133: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
11134: a possible symb for the URL in $thisfn, and if is an encryypted
11135: resource that the user accessed using /enc/ returns a 1 on success, 0
11136: on failure, user must be in a course, as it assumes the existance of
11137: the course initial hash, and uses $env('request.course.id'}
11138:
11139:
11140: =item *
11141:
11142: symbclean($symb) : removes versions numbers from a symb, returns the
11143: cleaned symb
11144:
11145: =item *
11146:
11147: is_on_map($uri) : checks if the $uri is somewhere on the current
11148: course map, user must be in a course for it to work.
11149:
11150: =item *
11151:
11152: numval($salt) : return random seed value (addend for rndseed)
11153:
11154: =item *
11155:
11156: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
11157: a random seed, all arguments are optional, if they aren't sent it uses the
11158: environment to derive them. Note: if symb isn't sent and it can't get one
11159: from &symbread it will use the current time as its return value
11160:
11161: =item *
11162:
11163: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
11164: unfakeable, receipt
11165:
11166: =item *
11167:
11168: receipt() : API to ireceipt working off of env values; given out to users
11169:
11170: =item *
11171:
11172: countacc($url) : count the number of accesses to a given URL
11173:
11174: =item *
11175:
11176: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
11177:
11178: =item *
11179:
11180: checkin($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 $tcrsid)
11181:
11182: =item *
11183:
11184: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
11185:
11186: =item *
11187:
11188: devalidate($symb) : devalidate temporary spreadsheet calculations,
11189: forcing spreadsheet to reevaluate the resource scores next time.
11190:
11191: =back
11192:
11193: =head2 Storing/Retreiving Data
11194:
11195: =over 4
11196:
11197: =item *
11198:
11199: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
11200: for this url; hashref needs to be given and should be a \%hashname; the
11201: remaining args aren't required and if they aren't passed or are '' they will
11202: be derived from the env
11203:
11204: =item *
11205:
11206: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
11207: uses critical subroutine
11208:
11209: =item *
11210:
11211: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
11212: all args are optional
11213:
11214: =item *
11215:
11216: dumpstore($namespace,$udom,$uname,$regexp,$range) :
11217: dumps the complete (or key matching regexp) namespace into a hash
11218: ($udom, $uname, $regexp, $range are optional) for a namespace that is
11219: normally &store()ed into
11220:
11221: $range should be either an integer '100' (give me the first 100
11222: matching records)
11223: or be two integers sperated by a - with no spaces
11224: '30-50' (give me the 30th through the 50th matching
11225: records)
11226:
11227:
11228: =item *
11229:
11230: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
11231: replaces a &store() version of data with a replacement set of data
11232: for a particular resource in a namespace passed in the $storehash hash
11233: reference
11234:
11235: =item *
11236:
11237: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
11238: works very similar to store/cstore, but all data is stored in a
11239: temporary location and can be reset using tmpreset, $storehash should
11240: be a hash reference, returns nothing on success
11241:
11242: =item *
11243:
11244: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
11245: similar to restore, but all data is stored in a temporary location and
11246: can be reset using tmpreset. Returns a hash of values on success,
11247: error string otherwise.
11248:
11249: =item *
11250:
11251: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
11252: deltes all keys for $symb form the temporary storage hash.
11253:
11254: =item *
11255:
11256: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11257: reference filled in from namesp ($udom and $uname are optional)
11258:
11259: =item *
11260:
11261: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
11262: namesp ($udom and $uname are optional)
11263:
11264: =item *
11265:
11266: dump($namespace,$udom,$uname,$regexp,$range) :
11267: dumps the complete (or key matching regexp) namespace into a hash
11268: ($udom, $uname, $regexp, $range are optional)
11269:
11270: $range should be either an integer '100' (give me the first 100
11271: matching records)
11272: or be two integers sperated by a - with no spaces
11273: '30-50' (give me the 30th through the 50th matching
11274: records)
11275: =item *
11276:
11277: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
11278: $store can be a scalar, an array reference, or if the amount to be
11279: incremented is > 1, a hash reference.
11280:
11281: ($udom and $uname are optional)
11282:
11283: =item *
11284:
11285: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
11286: ($udom and $uname are optional)
11287:
11288: =item *
11289:
11290: cput($namespace,$storehash,$udom,$uname) : critical put
11291: ($udom and $uname are optional)
11292:
11293: =item *
11294:
11295: newput($namespace,$storehash,$udom,$uname) :
11296:
11297: Attempts to store the items in the $storehash, but only if they don't
11298: currently exist, if this succeeds you can be certain that you have
11299: successfully created a new key value pair in the $namespace db.
11300:
11301:
11302: Args:
11303: $namespace: name of database to store values to
11304: $storehash: hashref to store to the db
11305: $udom: (optional) domain of user containing the db
11306: $uname: (optional) name of user caontaining the db
11307:
11308: Returns:
11309: 'ok' -> succeeded in storing all keys of $storehash
11310: 'key_exists: <key>' -> failed to anything out of $storehash, as at
11311: least <key> already existed in the db (other
11312: requested keys may also already exist)
11313: 'error: <msg>' -> unable to tie the DB or other error occurred
11314: 'con_lost' -> unable to contact request server
11315: 'refused' -> action was not allowed by remote machine
11316:
11317:
11318: =item *
11319:
11320: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
11321: reference filled in from namesp (encrypts the return communication)
11322: ($udom and $uname are optional)
11323:
11324: =item *
11325:
11326: log($udom,$name,$home,$message) : write to permanent log for user; use
11327: critical subroutine
11328:
11329: =item *
11330:
11331: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
11332: array reference filled in from namespace found in domain level on either
11333: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
11334:
11335: =item *
11336:
11337: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
11338: domain level either on specified domain server ($uhome) or primary domain
11339: server ($udom and $uhome are optional)
11340:
11341: =item *
11342:
11343: get_domain_defaults($target_domain) : returns hash with defaults for
11344: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
11345: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
11346: or localauth), initial password or a kerberos realm, language (e.g., en-us).
11347: Values are retrieved from cache (if current), or from domain's configuration.db
11348: (if available), or lastly from values in lonTabs/dns_domain,tab,
11349: or lonTabs/domain.tab.
11350:
11351: %domdefaults = &get_auth_defaults($target_domain);
11352:
11353: =back
11354:
11355: =head2 Network Status Functions
11356:
11357: =over 4
11358:
11359: =item *
11360:
11361: dirlist($uri) : return directory list based on URI
11362:
11363: =item *
11364:
11365: spareserver() : find server with least workload from spare.tab
11366:
11367:
11368: =item *
11369:
11370: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
11371: if there is no corresponding loncapa host.
11372:
11373: =back
11374:
11375:
11376: =head2 Apache Request
11377:
11378: =over 4
11379:
11380: =item *
11381:
11382: ssi($url,%hash) : server side include, does a complete request cycle on url to
11383: localhost, posts hash
11384:
11385: =back
11386:
11387: =head2 Data to String to Data
11388:
11389: =over 4
11390:
11391: =item *
11392:
11393: hash2str(%hash) : convert a hash into a string complete with escaping and '='
11394: and '&' separators, supports elements that are arrayrefs and hashrefs
11395:
11396: =item *
11397:
11398: hashref2str($hashref) : convert a hashref into a string complete with
11399: escaping and '=' and '&' separators, supports elements that are
11400: arrayrefs and hashrefs
11401:
11402: =item *
11403:
11404: arrayref2str($arrayref) : convert an arrayref into a string complete
11405: with escaping and '&' separators, supports elements that are arrayrefs
11406: and hashrefs
11407:
11408: =item *
11409:
11410: str2hash($string) : convert string to hash using unescaping and
11411: splitting on '=' and '&', supports elements that are arrayrefs and
11412: hashrefs
11413:
11414: =item *
11415:
11416: str2array($string) : convert string to hash using unescaping and
11417: splitting on '&', supports elements that are arrayrefs and hashrefs
11418:
11419: =back
11420:
11421: =head2 Logging Routines
11422:
11423: =over 4
11424:
11425: These routines allow one to make log messages in the lonnet.log and
11426: lonnet.perm logfiles.
11427:
11428: =item *
11429:
11430: logtouch() : make sure the logfile, lonnet.log, exists
11431:
11432: =item *
11433:
11434: logthis() : append message to the normal lonnet.log file, it gets
11435: preiodically rolled over and deleted.
11436:
11437: =item *
11438:
11439: logperm() : append a permanent message to lonnet.perm.log, this log
11440: file never gets deleted by any automated portion of the system, only
11441: messages of critical importance should go in here.
11442:
11443: =back
11444:
11445: =head2 General File Helper Routines
11446:
11447: =over 4
11448:
11449: =item *
11450:
11451: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
11452: (a) files in /uploaded
11453: (i) If a local copy of the file exists -
11454: compares modification date of local copy with last-modified date for
11455: definitive version stored on home server for course. If local copy is
11456: stale, requests a new version from the home server and stores it.
11457: If the original has been removed from the home server, then local copy
11458: is unlinked.
11459: (ii) If local copy does not exist -
11460: requests the file from the home server and stores it.
11461:
11462: If $caller is 'uploadrep':
11463: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
11464: for request for files originally uploaded via DOCS.
11465: - returns 'ok' if fresh local copy now available, -1 otherwise.
11466:
11467: Otherwise:
11468: This indicates a call from the content generation phase of the request.
11469: - returns the entire contents of the file or -1.
11470:
11471: (b) files in /res
11472: - returns the entire contents of a file or -1;
11473: it properly subscribes to and replicates the file if neccessary.
11474:
11475:
11476: =item *
11477:
11478: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
11479: reference
11480:
11481: returns either a stat() list of data about the file or an empty list
11482: if the file doesn't exist or couldn't find out about it (connection
11483: problems or user unknown)
11484:
11485: =item *
11486:
11487: filelocation($dir,$file) : returns file system location of a file
11488: based on URI; meant to be "fairly clean" absolute reference, $dir is a
11489: directory that relative $file lookups are to looked in ($dir of /a/dir
11490: and a file of ../bob will become /a/bob)
11491:
11492: =item *
11493:
11494: hreflocation($dir,$file) : returns file system location or a URL; same as
11495: filelocation except for hrefs
11496:
11497: =item *
11498:
11499: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
11500:
11501: =back
11502:
11503: =head2 Usererfile file routines (/uploaded*)
11504:
11505: =over 4
11506:
11507: =item *
11508:
11509: userfileupload(): main rotine for putting a file in a user or course's
11510: filespace, arguments are,
11511:
11512: formname - required - this is the name of the element in $env where the
11513: filename, and the contents of the file to create/modifed exist
11514: the filename is in $env{'form.'.$formname.'.filename'} and the
11515: contents of the file is located in $env{'form.'.$formname}
11516: context - if coursedoc, store the file in the course of the active role
11517: of the current user;
11518: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
11519: if 'canceloverwrite': delete file in tmp/overwrites directory
11520: subdir - required - subdirectory to put the file in under ../userfiles/
11521: if undefined, it will be placed in "unknown"
11522:
11523: (This routine calls clean_filename() to remove any dangerous
11524: characters from the filename, and then calls finuserfileupload() to
11525: complete the transaction)
11526:
11527: returns either the url of the uploaded file (/uploaded/....) if successful
11528: and /adm/notfound.html if unsuccessful
11529:
11530: =item *
11531:
11532: clean_filename(): routine for cleaing a filename up for storage in
11533: userfile space, argument is:
11534:
11535: filename - proposed filename
11536:
11537: returns: the new clean filename
11538:
11539: =item *
11540:
11541: finishuserfileupload(): routine that creates and sends the file to
11542: userspace, probably shouldn't be called directly
11543:
11544: docuname: username or courseid of destination for the file
11545: docudom: domain of user/course of destination for the file
11546: formname: same as for userfileupload()
11547: fname: filename (including subdirectories) for the file
11548: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
11549: allfiles: reference to hash used to store objects found by parser
11550: codebase: reference to hash used for codebases of java objects found by parser
11551: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
11552: thumbheight: height (pixels) of thumbnail to be created for uploaded image
11553: resizewidth: width to be used to resize image using resizeImage from ImageMagick
11554: resizeheight: height to be used to resize image using resizeImage from ImageMagick
11555: context: if 'overwrite', will move the uploaded file from its temporary location to
11556: userfiles to facilitate overwriting a previously uploaded file with same name.
11557: mimetype: reference to scalar to accommodate mime type determined
11558: from File::MMagic if $parser = parse.
11559:
11560: returns either the url of the uploaded file (/uploaded/....) if successful
11561: and /adm/notfound.html if unsuccessful (or an error message if context
11562: was 'overwrite').
11563:
11564:
11565: =item *
11566:
11567: renameuserfile(): renames an existing userfile to a new name
11568:
11569: Args:
11570: docuname: username or courseid of destination for the file
11571: docudom: domain of user/course of destination for the file
11572: old: current file name (including any subdirs under userfiles)
11573: new: desired file name (including any subdirs under userfiles)
11574:
11575: =item *
11576:
11577: mkdiruserfile(): creates a directory is a userfiles dir
11578:
11579: Args:
11580: docuname: username or courseid of destination for the file
11581: docudom: domain of user/course of destination for the file
11582: dir: dir to create (including any subdirs under userfiles)
11583:
11584: =item *
11585:
11586: removeuserfile(): removes a file that exists in userfiles
11587:
11588: Args:
11589: docuname: username or courseid of destination for the file
11590: docudom: domain of user/course of destination for the file
11591: fname: filname to delete (including any subdirs under userfiles)
11592:
11593: =item *
11594:
11595: removeuploadedurl(): convience function for removeuserfile()
11596:
11597: Args:
11598: url: a full /uploaded/... url to delete
11599:
11600: =item *
11601:
11602: get_portfile_permissions():
11603: Args:
11604: domain: domain of user or course contain the portfolio files
11605: user: name of user or num of course contain the portfolio files
11606: Returns:
11607: hashref of a dump of the proper file_permissions.db
11608:
11609:
11610: =item *
11611:
11612: get_access_controls():
11613:
11614: Args:
11615: current_permissions: the hash ref returned from get_portfile_permissions()
11616: group: (optional) the group you want the files associated with
11617: file: (optional) the file you want access info on
11618:
11619: Returns:
11620: a hash (keys are file names) of hashes containing
11621: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
11622: values are XML containing access control settings (see below)
11623:
11624: Internal notes:
11625:
11626: access controls are stored in file_permissions.db as key=value pairs.
11627: key -> path to file/file_name\0uniqueID:scope_end_start
11628: where scope -> public,guest,course,group,domains or users.
11629: end -> UNIX time for end of access (0 -> no end date)
11630: start -> UNIX time for start of access
11631:
11632: value -> XML description of access control
11633: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
11634: <start></start>
11635: <end></end>
11636:
11637: <password></password> for scope type = guest
11638:
11639: <domain></domain> for scope type = course or group
11640: <number></number>
11641: <roles id="">
11642: <role></role>
11643: <access></access>
11644: <section></section>
11645: <group></group>
11646: </roles>
11647:
11648: <dom></dom> for scope type = domains
11649:
11650: <users> for scope type = users
11651: <user>
11652: <uname></uname>
11653: <udom></udom>
11654: </user>
11655: </users>
11656: </scope>
11657:
11658: Access data is also aggregated for each file in an additional key=value pair:
11659: key -> path to file/file_name\0accesscontrol
11660: value -> reference to hash
11661: hash contains key = value pairs
11662: where key = uniqueID:scope_end_start
11663: value = UNIX time record was last updated
11664:
11665: Used to improve speed of look-ups of access controls for each file.
11666:
11667: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
11668:
11669: modify_access_controls():
11670:
11671: Modifies access controls for a portfolio file
11672: Args
11673: 1. file name
11674: 2. reference to hash of required changes,
11675: 3. domain
11676: 4. username
11677: where domain,username are the domain of the portfolio owner
11678: (either a user or a course)
11679:
11680: Returns:
11681: 1. result of additions or updates ('ok' or 'error', with error message).
11682: 2. result of deletions ('ok' or 'error', with error message).
11683: 3. reference to hash of any new or updated access controls.
11684: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
11685: key = integer (inbound ID)
11686: value = uniqueID
11687:
11688: =back
11689:
11690: =head2 HTTP Helper Routines
11691:
11692: =over 4
11693:
11694: =item *
11695:
11696: escape() : unpack non-word characters into CGI-compatible hex codes
11697:
11698: =item *
11699:
11700: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
11701:
11702: =back
11703:
11704: =head1 PRIVATE SUBROUTINES
11705:
11706: =head2 Underlying communication routines (Shouldn't call)
11707:
11708: =over 4
11709:
11710: =item *
11711:
11712: subreply() : tries to pass a message to lonc, returns con_lost if incapable
11713:
11714: =item *
11715:
11716: reply() : uses subreply to send a message to remote machine, logs all failures
11717:
11718: =item *
11719:
11720: critical() : passes a critical message to another server; if cannot
11721: get through then place message in connection buffer directory and
11722: returns con_delayed, if incapable of saving message, returns
11723: con_failed
11724:
11725: =item *
11726:
11727: reconlonc() : tries to reconnect lonc client processes.
11728:
11729: =back
11730:
11731: =head2 Resource Access Logging
11732:
11733: =over 4
11734:
11735: =item *
11736:
11737: flushcourselogs() : flush (save) buffer logs and access logs
11738:
11739: =item *
11740:
11741: courselog($what) : save message for course in hash
11742:
11743: =item *
11744:
11745: courseacclog($what) : save message for course using &courselog(). Perform
11746: special processing for specific resource types (problems, exams, quizzes, etc).
11747:
11748: =item *
11749:
11750: goodbye() : flush course logs and log shutting down; it is called in srm.conf
11751: as a PerlChildExitHandler
11752:
11753: =back
11754:
11755: =head2 Other
11756:
11757: =over 4
11758:
11759: =item *
11760:
11761: symblist($mapname,%newhash) : update symbolic storage links
11762:
11763: =back
11764:
11765: =cut
11766:
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