1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1239 2013/09/29 14:15:08 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $apache
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$name,$id) = @_;
360: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
361: return $response;
362: }
363:
364: # -------------------------------------------------- Non-critical communication
365: sub subreply {
366: my ($cmd,$server)=@_;
367: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
368: #
369: # With loncnew process trimming, there's a timing hole between lonc server
370: # process exit and the master server picking up the listen on the AF_UNIX
371: # socket. In that time interval, a lock file will exist:
372:
373: my $lockfile=$peerfile.".lock";
374: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
375: sleep(1);
376: }
377: # At this point, either a loncnew parent is listening or an old lonc
378: # or loncnew child is listening so we can connect or everything's dead.
379: #
380: # We'll give the connection a few tries before abandoning it. If
381: # connection is not possible, we'll con_lost back to the client.
382: #
383: my $client;
384: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
385: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
386: Type => SOCK_STREAM,
387: Timeout => 10);
388: if ($client) {
389: last; # Connected!
390: } else {
391: &create_connection(&hostname($server),$server);
392: }
393: sleep(1); # Try again later if failed connection.
394: }
395: my $answer;
396: if ($client) {
397: print $client "sethost:$server:$cmd\n";
398: $answer=<$client>;
399: if (!$answer) { $answer="con_lost"; }
400: chomp($answer);
401: } else {
402: $answer = 'con_lost'; # Failed connection.
403: }
404: return $answer;
405: }
406:
407: sub reply {
408: my ($cmd,$server)=@_;
409: unless (defined(&hostname($server))) { return 'no_such_host'; }
410: my $answer=subreply($cmd,$server);
411: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
412: &logthis("<font color=\"blue\">WARNING:".
413: " $cmd to $server returned $answer</font>");
414: }
415: return $answer;
416: }
417:
418: # ----------------------------------------------------------- Send USR1 to lonc
419:
420: sub reconlonc {
421: my ($lonid) = @_;
422: my $hostname = &hostname($lonid);
423: if ($lonid) {
424: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
425: if ($hostname && -e $peerfile) {
426: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
427: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
428: Type => SOCK_STREAM,
429: Timeout => 10);
430: if ($client) {
431: print $client ("reset_retries\n");
432: my $answer=<$client>;
433: #reset just this one.
434: }
435: }
436: return;
437: }
438:
439: &logthis("Trying to reconnect lonc");
440: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
441: if (open(my $fh,"<$loncfile")) {
442: my $loncpid=<$fh>;
443: chomp($loncpid);
444: if (kill 0 => $loncpid) {
445: &logthis("lonc at pid $loncpid responding, sending USR1");
446: kill USR1 => $loncpid;
447: sleep 1;
448: } else {
449: &logthis(
450: "<font color=\"blue\">WARNING:".
451: " lonc at pid $loncpid not responding, giving up</font>");
452: }
453: } else {
454: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
455: }
456: }
457:
458: # ------------------------------------------------------ Critical communication
459:
460: sub critical {
461: my ($cmd,$server)=@_;
462: unless (&hostname($server)) {
463: &logthis("<font color=\"blue\">WARNING:".
464: " Critical message to unknown server ($server)</font>");
465: return 'no_such_host';
466: }
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: &reconlonc("$perlvar{'lonSockDir'}/$server");
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: my $now=time;
473: my $middlename=$cmd;
474: $middlename=substr($middlename,0,16);
475: $middlename=~s/\W//g;
476: my $dfilename=
477: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
478: $dumpcount++;
479: {
480: my $dfh;
481: if (open($dfh,">$dfilename")) {
482: print $dfh "$cmd\n";
483: close($dfh);
484: }
485: }
486: sleep 2;
487: my $wcmd='';
488: {
489: my $dfh;
490: if (open($dfh,"<$dfilename")) {
491: $wcmd=<$dfh>;
492: close($dfh);
493: }
494: }
495: chomp($wcmd);
496: if ($wcmd eq $cmd) {
497: &logthis("<font color=\"blue\">WARNING: ".
498: "Connection buffer $dfilename: $cmd</font>");
499: &logperm("D:$server:$cmd");
500: return 'con_delayed';
501: } else {
502: &logthis("<font color=\"red\">CRITICAL:"
503: ." Critical connection failed: $server $cmd</font>");
504: &logperm("F:$server:$cmd");
505: return 'con_failed';
506: }
507: }
508: }
509: return $answer;
510: }
511:
512: # ------------------------------------------- check if return value is an error
513:
514: sub error {
515: my ($result) = @_;
516: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
517: if ($2 == 2) { return undef; }
518: return $1;
519: }
520: return undef;
521: }
522:
523: sub convert_and_load_session_env {
524: my ($lonidsdir,$handle)=@_;
525: my @profile;
526: {
527: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
528: if (!$opened) {
529: return 0;
530: }
531: flock($idf,LOCK_SH);
532: @profile=<$idf>;
533: close($idf);
534: }
535: my %temp_env;
536: foreach my $line (@profile) {
537: if ($line !~ m/=/) {
538: return 0;
539: }
540: chomp($line);
541: my ($envname,$envvalue)=split(/=/,$line,2);
542: $temp_env{&unescape($envname)} = &unescape($envvalue);
543: }
544: unlink("$lonidsdir/$handle.id");
545: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
546: 0640)) {
547: %disk_env = %temp_env;
548: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
549: untie(%disk_env);
550: }
551: return 1;
552: }
553:
554: # ------------------------------------------- Transfer profile into environment
555: my $env_loaded;
556: sub transfer_profile_to_env {
557: my ($lonidsdir,$handle,$force_transfer) = @_;
558: if (!$force_transfer && $env_loaded) { return; }
559:
560: if (!defined($lonidsdir)) {
561: $lonidsdir = $perlvar{'lonIDsDir'};
562: }
563: if (!defined($handle)) {
564: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
565: }
566:
567: my $convert;
568: {
569: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
570: if (!$opened) {
571: return;
572: }
573: flock($idf,LOCK_SH);
574: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
575: &GDBM_READER(),0640)) {
576: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
577: untie(%disk_env);
578: } else {
579: $convert = 1;
580: }
581: }
582: if ($convert) {
583: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
584: &logthis("Failed to load session, or convert session.");
585: }
586: }
587:
588: my %remove;
589: while ( my $envname = each(%env) ) {
590: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
591: if ($time < time-300) {
592: $remove{$key}++;
593: }
594: }
595: }
596:
597: $env{'user.environment'} = "$lonidsdir/$handle.id";
598: $env_loaded=1;
599: foreach my $expired_key (keys(%remove)) {
600: &delenv($expired_key);
601: }
602: }
603:
604: # ---------------------------------------------------- Check for valid session
605: sub check_for_valid_session {
606: my ($r,$name) = @_;
607: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
608: if ($name eq '') {
609: $name = 'lonID';
610: }
611: my $lonid=$cookies{$name};
612: return undef if (!$lonid);
613:
614: my $handle=&LONCAPA::clean_handle($lonid->value);
615: my $lonidsdir;
616: if ($name eq 'lonDAV') {
617: $lonidsdir=$r->dir_config('lonDAVsessDir');
618: } else {
619: $lonidsdir=$r->dir_config('lonIDsDir');
620: }
621: return undef if (!-e "$lonidsdir/$handle.id");
622:
623: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
624: return undef if (!$opened);
625:
626: flock($idf,LOCK_SH);
627: my %disk_env;
628: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
629: &GDBM_READER(),0640)) {
630: return undef;
631: }
632:
633: if (!defined($disk_env{'user.name'})
634: || !defined($disk_env{'user.domain'})) {
635: return undef;
636: }
637: if (($r->user() eq '') && ($apache >= 2.4)) {
638: if ($disk_env{'user.domain'} eq $r->dir_config('lonDefDomain')) {
639: $r->user($disk_env{'user.name'});
640: } else {
641: $r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});
642: }
643: }
644: return $handle;
645: }
646:
647: sub timed_flock {
648: my ($file,$lock_type) = @_;
649: my $failed=0;
650: eval {
651: local $SIG{__DIE__}='DEFAULT';
652: local $SIG{ALRM}=sub {
653: $failed=1;
654: die("failed lock");
655: };
656: alarm(13);
657: flock($file,$lock_type);
658: alarm(0);
659: };
660: if ($failed) {
661: return undef;
662: } else {
663: return 1;
664: }
665: }
666:
667: # ---------------------------------------------------------- Append Environment
668:
669: sub appenv {
670: my ($newenv,$roles) = @_;
671: if (ref($newenv) eq 'HASH') {
672: foreach my $key (keys(%{$newenv})) {
673: my $refused = 0;
674: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
675: $refused = 1;
676: if (ref($roles) eq 'ARRAY') {
677: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
678: if (grep(/^\Q$role\E$/,@{$roles})) {
679: $refused = 0;
680: }
681: }
682: }
683: if ($refused) {
684: &logthis("<font color=\"blue\">WARNING: ".
685: "Attempt to modify environment ".$key." to ".$newenv->{$key}
686: .'</font>');
687: delete($newenv->{$key});
688: } else {
689: $env{$key}=$newenv->{$key};
690: }
691: }
692: my $opened = open(my $env_file,'+<',$env{'user.environment'});
693: if ($opened
694: && &timed_flock($env_file,LOCK_EX)
695: &&
696: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
697: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
698: while (my ($key,$value) = each(%{$newenv})) {
699: $disk_env{$key} = $value;
700: }
701: untie(%disk_env);
702: }
703: }
704: return 'ok';
705: }
706: # ----------------------------------------------------- Delete from Environment
707:
708: sub delenv {
709: my ($delthis,$regexp,$roles) = @_;
710: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
711: my $refused = 1;
712: if (ref($roles) eq 'ARRAY') {
713: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
714: if (grep(/^\Q$role\E$/,@{$roles})) {
715: $refused = 0;
716: }
717: }
718: if ($refused) {
719: &logthis("<font color=\"blue\">WARNING: ".
720: "Attempt to delete from environment ".$delthis);
721: return 'error';
722: }
723: }
724: my $opened = open(my $env_file,'+<',$env{'user.environment'});
725: if ($opened
726: && &timed_flock($env_file,LOCK_EX)
727: &&
728: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
729: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
730: foreach my $key (keys(%disk_env)) {
731: if ($regexp) {
732: if ($key=~/^$delthis/) {
733: delete($env{$key});
734: delete($disk_env{$key});
735: }
736: } else {
737: if ($key=~/^\Q$delthis\E/) {
738: delete($env{$key});
739: delete($disk_env{$key});
740: }
741: }
742: }
743: untie(%disk_env);
744: }
745: return 'ok';
746: }
747:
748: sub get_env_multiple {
749: my ($name) = @_;
750: my @values;
751: if (defined($env{$name})) {
752: # exists is it an array
753: if (ref($env{$name})) {
754: @values=@{ $env{$name} };
755: } else {
756: $values[0]=$env{$name};
757: }
758: }
759: return(@values);
760: }
761:
762: # ------------------------------------------------------------------- Locking
763:
764: sub set_lock {
765: my ($text)=@_;
766: $locknum++;
767: my $id=$$.'-'.$locknum;
768: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
769: 'session.lock.'.$id => $text});
770: return $id;
771: }
772:
773: sub get_locks {
774: my $num=0;
775: my %texts=();
776: foreach my $lock (split(/\,/,$env{'session.locks'})) {
777: if ($lock=~/\w/) {
778: $num++;
779: $texts{$lock}=$env{'session.lock.'.$lock};
780: }
781: }
782: return ($num,%texts);
783: }
784:
785: sub remove_lock {
786: my ($id)=@_;
787: my $newlocks='';
788: foreach my $lock (split(/\,/,$env{'session.locks'})) {
789: if (($lock=~/\w/) && ($lock ne $id)) {
790: $newlocks.=','.$lock;
791: }
792: }
793: &appenv({'session.locks' => $newlocks});
794: &delenv('session.lock.'.$id);
795: }
796:
797: sub remove_all_locks {
798: my $activelocks=$env{'session.locks'};
799: foreach my $lock (split(/\,/,$env{'session.locks'})) {
800: if ($lock=~/\w/) {
801: &remove_lock($lock);
802: }
803: }
804: }
805:
806:
807: # ------------------------------------------ Find out current server userload
808: sub userload {
809: my $numusers=0;
810: {
811: opendir(LONIDS,$perlvar{'lonIDsDir'});
812: my $filename;
813: my $curtime=time;
814: while ($filename=readdir(LONIDS)) {
815: next if ($filename eq '.' || $filename eq '..');
816: next if ($filename =~ /publicuser_\d+\.id/);
817: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
818: if ($curtime-$mtime < 1800) { $numusers++; }
819: }
820: closedir(LONIDS);
821: }
822: my $userloadpercent=0;
823: my $maxuserload=$perlvar{'lonUserLoadLim'};
824: if ($maxuserload) {
825: $userloadpercent=100*$numusers/$maxuserload;
826: }
827: $userloadpercent=sprintf("%.2f",$userloadpercent);
828: return $userloadpercent;
829: }
830:
831: # ------------------------------ Find server with least workload from spare.tab
832:
833: sub spareserver {
834: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
835: my $spare_server;
836: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
837: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
838: : $userloadpercent;
839: my ($uint_dom,$remotesessions);
840: if (($udom ne '') && (&domain($udom) ne '')) {
841: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
842: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
843: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
844: $remotesessions = $udomdefaults{'remotesessions'};
845: }
846: my $spareshash = &this_host_spares($udom);
847: if (ref($spareshash) eq 'HASH') {
848: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
849: foreach my $try_server (@{ $spareshash->{'primary'} }) {
850: if ($uint_dom) {
851: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
852: $try_server));
853: }
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858:
859: my $found_server = ($spare_server ne '' && $lowest_load < 100);
860:
861: if (!$found_server) {
862: if (ref($spareshash->{'default'}) eq 'ARRAY') {
863: foreach my $try_server (@{ $spareshash->{'default'} }) {
864: if ($uint_dom) {
865: next unless (&spare_can_host($udom,$uint_dom,
866: $remotesessions,$try_server));
867: }
868: ($spare_server, $lowest_load) =
869: &compare_server_load($try_server, $spare_server, $lowest_load);
870: }
871: }
872: }
873: }
874:
875: if (!$want_server_name) {
876: my $protocol = 'http';
877: if ($protocol{$spare_server} eq 'https') {
878: $protocol = $protocol{$spare_server};
879: }
880: if (defined($spare_server)) {
881: my $hostname = &hostname($spare_server);
882: if (defined($hostname)) {
883: $spare_server = $protocol.'://'.$hostname;
884: }
885: }
886: }
887: return $spare_server;
888: }
889:
890: sub compare_server_load {
891: my ($try_server, $spare_server, $lowest_load) = @_;
892:
893: my $loadans = &reply('load', $try_server);
894: my $userloadans = &reply('userload',$try_server);
895:
896: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
897: return ($spare_server, $lowest_load); #didn't get a number from the server
898: }
899:
900: my $load;
901: if ($loadans =~ /\d/) {
902: if ($userloadans =~ /\d/) {
903: #both are numbers, pick the bigger one
904: $load = ($loadans > $userloadans) ? $loadans
905: : $userloadans;
906: } else {
907: $load = $loadans;
908: }
909: } else {
910: $load = $userloadans;
911: }
912:
913: if (($load =~ /\d/) && ($load < $lowest_load)) {
914: $spare_server = $try_server;
915: $lowest_load = $load;
916: }
917: return ($spare_server,$lowest_load);
918: }
919:
920: # --------------------------- ask offload servers if user already has a session
921: sub find_existing_session {
922: my ($udom,$uname) = @_;
923: my $spareshash = &this_host_spares($udom);
924: if (ref($spareshash) eq 'HASH') {
925: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
926: foreach my $try_server (@{ $spareshash->{'primary'} }) {
927: return $try_server if (&has_user_session($try_server, $udom, $uname));
928: }
929: }
930: if (ref($spareshash->{'default'}) eq 'ARRAY') {
931: foreach my $try_server (@{ $spareshash->{'default'} }) {
932: return $try_server if (&has_user_session($try_server, $udom, $uname));
933: }
934: }
935: }
936: return;
937: }
938:
939: # -------------------------------- ask if server already has a session for user
940: sub has_user_session {
941: my ($lonid,$udom,$uname) = @_;
942: my $result = &reply(join(':','userhassession',
943: map {&escape($_)} ($udom,$uname)),$lonid);
944: return 1 if ($result eq 'ok');
945:
946: return 0;
947: }
948:
949: # --------- determine least loaded server in a user's domain which allows login
950:
951: sub choose_server {
952: my ($udom,$checkloginvia) = @_;
953: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
954: my %servers = &get_servers($udom);
955: my $lowest_load = 30000;
956: my ($login_host,$hostname,$portal_path,$isredirect);
957: foreach my $lonhost (keys(%servers)) {
958: my $loginvia;
959: if ($checkloginvia) {
960: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
961: if ($loginvia) {
962: my ($server,$path) = split(/:/,$loginvia);
963: ($login_host, $lowest_load) =
964: &compare_server_load($server, $login_host, $lowest_load);
965: if ($login_host eq $server) {
966: $portal_path = $path;
967: $isredirect = 1;
968: }
969: } else {
970: ($login_host, $lowest_load) =
971: &compare_server_load($lonhost, $login_host, $lowest_load);
972: if ($login_host eq $lonhost) {
973: $portal_path = '';
974: $isredirect = '';
975: }
976: }
977: } else {
978: ($login_host, $lowest_load) =
979: &compare_server_load($lonhost, $login_host, $lowest_load);
980: }
981: }
982: if ($login_host ne '') {
983: $hostname = &hostname($login_host);
984: }
985: return ($login_host,$hostname,$portal_path,$isredirect);
986: }
987:
988: # --------------------------------------------- Try to change a user's password
989:
990: sub changepass {
991: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
992: $currentpass = &escape($currentpass);
993: $newpass = &escape($newpass);
994: my $lonhost = $perlvar{'lonHostID'};
995: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
996: $server);
997: if (! $answer) {
998: &logthis("No reply on password change request to $server ".
999: "by $uname in domain $udom.");
1000: } elsif ($answer =~ "^ok") {
1001: &logthis("$uname in $udom successfully changed their password ".
1002: "on $server.");
1003: } elsif ($answer =~ "^pwchange_failure") {
1004: &logthis("$uname in $udom was unable to change their password ".
1005: "on $server. The action was blocked by either lcpasswd ".
1006: "or pwchange");
1007: } elsif ($answer =~ "^non_authorized") {
1008: &logthis("$uname in $udom did not get their password correct when ".
1009: "attempting to change it on $server.");
1010: } elsif ($answer =~ "^auth_mode_error") {
1011: &logthis("$uname in $udom attempted to change their password despite ".
1012: "not being locally or internally authenticated on $server.");
1013: } elsif ($answer =~ "^unknown_user") {
1014: &logthis("$uname in $udom attempted to change their password ".
1015: "on $server but were unable to because $server is not ".
1016: "their home server.");
1017: } elsif ($answer =~ "^refused") {
1018: &logthis("$server refused to change $uname in $udom password because ".
1019: "it was sent an unencrypted request to change the password.");
1020: } elsif ($answer =~ "invalid_client") {
1021: &logthis("$server refused to change $uname in $udom password because ".
1022: "it was a reset by e-mail originating from an invalid server.");
1023: }
1024: return $answer;
1025: }
1026:
1027: # ----------------------- Try to determine user's current authentication scheme
1028:
1029: sub queryauthenticate {
1030: my ($uname,$udom)=@_;
1031: my $uhome=&homeserver($uname,$udom);
1032: if (!$uhome) {
1033: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1034: return 'no_host';
1035: }
1036: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1037: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1038: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1039: }
1040: return $answer;
1041: }
1042:
1043: # --------- Try to authenticate user from domain's lib servers (first this one)
1044:
1045: sub authenticate {
1046: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1047: $upass=&escape($upass);
1048: $uname= &LONCAPA::clean_username($uname);
1049: my $uhome=&homeserver($uname,$udom,1);
1050: my $newhome;
1051: if ((!$uhome) || ($uhome eq 'no_host')) {
1052: # Maybe the machine was offline and only re-appeared again recently?
1053: &reconlonc();
1054: # One more
1055: $uhome=&homeserver($uname,$udom,1);
1056: if (($uhome eq 'no_host') && $checkdefauth) {
1057: if (defined(&domain($udom,'primary'))) {
1058: $newhome=&domain($udom,'primary');
1059: }
1060: if ($newhome ne '') {
1061: $uhome = $newhome;
1062: }
1063: }
1064: if ((!$uhome) || ($uhome eq 'no_host')) {
1065: &logthis("User $uname at $udom is unknown in authenticate");
1066: return 'no_host';
1067: }
1068: }
1069: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1070: if ($answer eq 'authorized') {
1071: if ($newhome) {
1072: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1073: return 'no_account_on_host';
1074: } else {
1075: &logthis("User $uname at $udom authorized by $uhome");
1076: return $uhome;
1077: }
1078: }
1079: if ($answer eq 'non_authorized') {
1080: &logthis("User $uname at $udom rejected by $uhome");
1081: return 'no_host';
1082: }
1083: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1084: return 'no_host';
1085: }
1086:
1087: sub can_host_session {
1088: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1089: my $canhost = 1;
1090: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1091: if (ref($remotesessions) eq 'HASH') {
1092: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1094: $canhost = 0;
1095: } else {
1096: $canhost = 1;
1097: }
1098: }
1099: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1100: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1101: $canhost = 1;
1102: } else {
1103: $canhost = 0;
1104: }
1105: }
1106: if ($canhost) {
1107: if ($remotesessions->{'version'} ne '') {
1108: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1109: if ($reqmajor ne '' && $reqminor ne '') {
1110: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1111: my $major = $1;
1112: my $minor = $2;
1113: if (($major < $reqmajor ) ||
1114: (($major == $reqmajor) && ($minor < $reqminor))) {
1115: $canhost = 0;
1116: }
1117: } else {
1118: $canhost = 0;
1119: }
1120: }
1121: }
1122: }
1123: }
1124: if ($canhost) {
1125: if (ref($hostedsessions) eq 'HASH') {
1126: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1127: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1128: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1129: if (($uint_dom ne '') &&
1130: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1131: $canhost = 0;
1132: } else {
1133: $canhost = 1;
1134: }
1135: }
1136: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1137: if (($uint_dom ne '') &&
1138: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1139: $canhost = 1;
1140: } else {
1141: $canhost = 0;
1142: }
1143: }
1144: }
1145: }
1146: return $canhost;
1147: }
1148:
1149: sub spare_can_host {
1150: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1151: my $canhost=1;
1152: my @intdoms;
1153: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1154: if (ref($internet_names) eq 'ARRAY') {
1155: @intdoms = @{$internet_names};
1156: }
1157: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1158: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1159: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1160: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1161: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1162: $canhost = &can_host_session($udom,$try_server,$remoterev,
1163: $remotesessions,
1164: $defdomdefaults{'hostedsessions'});
1165: }
1166: return $canhost;
1167: }
1168:
1169: sub this_host_spares {
1170: my ($dom) = @_;
1171: my ($dom_in_use,$lonhost_in_use,$result);
1172: my @hosts = ¤t_machine_ids();
1173: foreach my $lonhost (@hosts) {
1174: if (&host_domain($lonhost) eq $dom) {
1175: $dom_in_use = $dom;
1176: $lonhost_in_use = $lonhost;
1177: last;
1178: }
1179: }
1180: if ($dom_in_use ne '') {
1181: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1182: }
1183: if (ref($result) ne 'HASH') {
1184: $lonhost_in_use = $perlvar{'lonHostID'};
1185: $dom_in_use = &host_domain($lonhost_in_use);
1186: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1187: if (ref($result) ne 'HASH') {
1188: $result = \%spareid;
1189: }
1190: }
1191: return $result;
1192: }
1193:
1194: sub spares_for_offload {
1195: my ($dom_in_use,$lonhost_in_use) = @_;
1196: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1197: if (defined($cached)) {
1198: return $result;
1199: } else {
1200: my $cachetime = 60*60*24;
1201: my %domconfig =
1202: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1203: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1204: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1205: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1206: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1207: }
1208: }
1209: }
1210: }
1211: return;
1212: }
1213:
1214: sub get_lonbalancer_config {
1215: my ($servers) = @_;
1216: my ($currbalancer,$currtargets);
1217: if (ref($servers) eq 'HASH') {
1218: foreach my $server (keys(%{$servers})) {
1219: my %what = (
1220: spareid => 1,
1221: perlvar => 1,
1222: );
1223: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1224: if ($result eq 'ok') {
1225: if (ref($returnhash) eq 'HASH') {
1226: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1227: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1228: $currbalancer = $server;
1229: $currtargets = {};
1230: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1231: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1232: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1233: }
1234: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1235: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1236: }
1237: }
1238: last;
1239: }
1240: }
1241: }
1242: }
1243: }
1244: }
1245: return ($currbalancer,$currtargets);
1246: }
1247:
1248: sub check_loadbalancing {
1249: my ($uname,$udom) = @_;
1250: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1251: $rule_in_effect,$offloadto,$otherserver);
1252: my $lonhost = $perlvar{'lonHostID'};
1253: my @hosts = ¤t_machine_ids();
1254: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1255: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1256: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1257: my $serverhomedom = &host_domain($lonhost);
1258:
1259: my $cachetime = 60*60*24;
1260:
1261: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1262: $dom_in_use = $udom;
1263: $homeintdom = 1;
1264: } else {
1265: $dom_in_use = $serverhomedom;
1266: }
1267: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1268: unless (defined($cached)) {
1269: my %domconfig =
1270: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1271: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1272: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1273: }
1274: }
1275: if (ref($result) eq 'HASH') {
1276: ($is_balancer,$currtargets,$currrules) =
1277: &check_balancer_result($result,@hosts);
1278: if ($is_balancer) {
1279: if (ref($currrules) eq 'HASH') {
1280: if ($homeintdom) {
1281: if ($uname ne '') {
1282: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1283: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1284: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1285: $rule_in_effect = $currrules->{'_LC_author'};
1286: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1287: $rule_in_effect = $currrules->{'_LC_adv'}
1288: }
1289: }
1290: if ($rule_in_effect eq '') {
1291: my %userenv = &userenvironment($udom,$uname,'inststatus');
1292: if ($userenv{'inststatus'} ne '') {
1293: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1294: my ($othertitle,$usertypes,$types) =
1295: &Apache::loncommon::sorted_inst_types($udom);
1296: if (ref($types) eq 'ARRAY') {
1297: foreach my $type (@{$types}) {
1298: if (grep(/^\Q$type\E$/,@statuses)) {
1299: if (exists($currrules->{$type})) {
1300: $rule_in_effect = $currrules->{$type};
1301: }
1302: }
1303: }
1304: }
1305: } else {
1306: if (exists($currrules->{'default'})) {
1307: $rule_in_effect = $currrules->{'default'};
1308: }
1309: }
1310: }
1311: } else {
1312: if (exists($currrules->{'default'})) {
1313: $rule_in_effect = $currrules->{'default'};
1314: }
1315: }
1316: } else {
1317: if ($currrules->{'_LC_external'} ne '') {
1318: $rule_in_effect = $currrules->{'_LC_external'};
1319: }
1320: }
1321: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1322: $uname,$udom);
1323: }
1324: }
1325: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1326: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1327: unless (defined($cached)) {
1328: my %domconfig =
1329: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1330: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1331: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1332: }
1333: }
1334: if (ref($result) eq 'HASH') {
1335: ($is_balancer,$currtargets,$currrules) =
1336: &check_balancer_result($result,@hosts);
1337: if ($is_balancer) {
1338: if (ref($currrules) eq 'HASH') {
1339: if ($currrules->{'_LC_internetdom'} ne '') {
1340: $rule_in_effect = $currrules->{'_LC_internetdom'};
1341: }
1342: }
1343: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1344: $uname,$udom);
1345: }
1346: } else {
1347: if ($perlvar{'lonBalancer'} eq 'yes') {
1348: $is_balancer = 1;
1349: $offloadto = &this_host_spares($dom_in_use);
1350: }
1351: }
1352: } else {
1353: if ($perlvar{'lonBalancer'} eq 'yes') {
1354: $is_balancer = 1;
1355: $offloadto = &this_host_spares($dom_in_use);
1356: }
1357: }
1358: if ($is_balancer) {
1359: my $lowest_load = 30000;
1360: if (ref($offloadto) eq 'HASH') {
1361: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1362: foreach my $try_server (@{$offloadto->{'primary'}}) {
1363: ($otherserver,$lowest_load) =
1364: &compare_server_load($try_server,$otherserver,$lowest_load);
1365: }
1366: }
1367: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1368:
1369: if (!$found_server) {
1370: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1371: foreach my $try_server (@{$offloadto->{'default'}}) {
1372: ($otherserver,$lowest_load) =
1373: &compare_server_load($try_server,$otherserver,$lowest_load);
1374: }
1375: }
1376: }
1377: } elsif (ref($offloadto) eq 'ARRAY') {
1378: if (@{$offloadto} == 1) {
1379: $otherserver = $offloadto->[0];
1380: } elsif (@{$offloadto} > 1) {
1381: foreach my $try_server (@{$offloadto}) {
1382: ($otherserver,$lowest_load) =
1383: &compare_server_load($try_server,$otherserver,$lowest_load);
1384: }
1385: }
1386: }
1387: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1388: $is_balancer = 0;
1389: if ($uname ne '' && $udom ne '') {
1390: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1391:
1392: &appenv({'user.loadbalexempt' => $lonhost,
1393: 'user.loadbalcheck.time' => time});
1394: }
1395: }
1396: }
1397: }
1398: return ($is_balancer,$otherserver);
1399: }
1400:
1401: sub check_balancer_result {
1402: my ($result,@hosts) = @_;
1403: my ($is_balancer,$currtargets,$currrules);
1404: if (ref($result) eq 'HASH') {
1405: if ($result->{'lonhost'} ne '') {
1406: my $currbalancer = $result->{'lonhost'};
1407: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1408: $is_balancer = 1;
1409: $currtargets = $result->{'targets'};
1410: $currrules = $result->{'rules'};
1411: }
1412: } else {
1413: foreach my $key (keys(%{$result})) {
1414: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1415: (ref($result->{$key}) eq 'HASH')) {
1416: $is_balancer = 1;
1417: $currrules = $result->{$key}{'rules'};
1418: $currtargets = $result->{$key}{'targets'};
1419: last;
1420: }
1421: }
1422: }
1423: }
1424: return ($is_balancer,$currtargets,$currrules);
1425: }
1426:
1427: sub get_loadbalancer_targets {
1428: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1429: my $offloadto;
1430: if ($rule_in_effect eq 'none') {
1431: return [$perlvar{'lonHostID'}];
1432: } elsif ($rule_in_effect eq '') {
1433: $offloadto = $currtargets;
1434: } else {
1435: if ($rule_in_effect eq 'homeserver') {
1436: my $homeserver = &homeserver($uname,$udom);
1437: if ($homeserver ne 'no_host') {
1438: $offloadto = [$homeserver];
1439: }
1440: } elsif ($rule_in_effect eq 'externalbalancer') {
1441: my %domconfig =
1442: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1443: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1444: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1445: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1446: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1447: }
1448: }
1449: } else {
1450: my %servers = &internet_dom_servers($udom);
1451: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1452: if (&hostname($remotebalancer) ne '') {
1453: $offloadto = [$remotebalancer];
1454: }
1455: }
1456: } elsif (&hostname($rule_in_effect) ne '') {
1457: $offloadto = [$rule_in_effect];
1458: }
1459: }
1460: return $offloadto;
1461: }
1462:
1463: sub internet_dom_servers {
1464: my ($dom) = @_;
1465: my (%uniqservers,%servers);
1466: my $primaryserver = &hostname(&domain($dom,'primary'));
1467: my @machinedoms = &machine_domains($primaryserver);
1468: foreach my $mdom (@machinedoms) {
1469: my %currservers = %servers;
1470: my %server = &get_servers($mdom);
1471: %servers = (%currservers,%server);
1472: }
1473: my %by_hostname;
1474: foreach my $id (keys(%servers)) {
1475: push(@{$by_hostname{$servers{$id}}},$id);
1476: }
1477: foreach my $hostname (sort(keys(%by_hostname))) {
1478: if (@{$by_hostname{$hostname}} > 1) {
1479: my $match = 0;
1480: foreach my $id (@{$by_hostname{$hostname}}) {
1481: if (&host_domain($id) eq $dom) {
1482: $uniqservers{$id} = $hostname;
1483: $match = 1;
1484: }
1485: }
1486: unless ($match) {
1487: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1488: }
1489: } else {
1490: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1491: }
1492: }
1493: return %uniqservers;
1494: }
1495:
1496: # ---------------------- Find the homebase for a user from domain's lib servers
1497:
1498: my %homecache;
1499: sub homeserver {
1500: my ($uname,$udom,$ignoreBadCache)=@_;
1501: my $index="$uname:$udom";
1502:
1503: if (exists($homecache{$index})) { return $homecache{$index}; }
1504:
1505: my %servers = &get_servers($udom,'library');
1506: foreach my $tryserver (keys(%servers)) {
1507: next if ($ignoreBadCache ne 'true' &&
1508: exists($badServerCache{$tryserver}));
1509:
1510: my $answer=reply("home:$udom:$uname",$tryserver);
1511: if ($answer eq 'found') {
1512: delete($badServerCache{$tryserver});
1513: return $homecache{$index}=$tryserver;
1514: } elsif ($answer eq 'no_host') {
1515: $badServerCache{$tryserver}=1;
1516: }
1517: }
1518: return 'no_host';
1519: }
1520:
1521: # ------------------------------------- Find the usernames behind a list of IDs
1522:
1523: sub idget {
1524: my ($udom,@ids)=@_;
1525: my %returnhash=();
1526:
1527: my %servers = &get_servers($udom,'library');
1528: foreach my $tryserver (keys(%servers)) {
1529: my $idlist=join('&',@ids);
1530: $idlist=~tr/A-Z/a-z/;
1531: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1532: my @answer=();
1533: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1534: @answer=split(/\&/,$reply);
1535: } ;
1536: my $i;
1537: for ($i=0;$i<=$#ids;$i++) {
1538: if ($answer[$i]) {
1539: $returnhash{$ids[$i]}=$answer[$i];
1540: }
1541: }
1542: }
1543: return %returnhash;
1544: }
1545:
1546: # ------------------------------------- Find the IDs behind a list of usernames
1547:
1548: sub idrget {
1549: my ($udom,@unames)=@_;
1550: my %returnhash=();
1551: foreach my $uname (@unames) {
1552: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1553: }
1554: return %returnhash;
1555: }
1556:
1557: # ------------------------------- Store away a list of names and associated IDs
1558:
1559: sub idput {
1560: my ($udom,%ids)=@_;
1561: my %servers=();
1562: foreach my $uname (keys(%ids)) {
1563: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1564: my $uhom=&homeserver($uname,$udom);
1565: if ($uhom ne 'no_host') {
1566: my $id=&escape($ids{$uname});
1567: $id=~tr/A-Z/a-z/;
1568: my $esc_unam=&escape($uname);
1569: if ($servers{$uhom}) {
1570: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1571: } else {
1572: $servers{$uhom}=$id.'='.$esc_unam;
1573: }
1574: }
1575: }
1576: foreach my $server (keys(%servers)) {
1577: &critical('idput:'.$udom.':'.$servers{$server},$server);
1578: }
1579: }
1580:
1581: # ---------------------------------------- Delete unwanted IDs from ids.db file
1582:
1583: sub iddel {
1584: my ($udom,$idshashref,$uhome)=@_;
1585: my %result=();
1586: unless (ref($idshashref) eq 'HASH') {
1587: return %result;
1588: }
1589: my %servers=();
1590: while (my ($id,$uname) = each(%{$idshashref})) {
1591: my $uhom;
1592: if ($uhome) {
1593: $uhom = $uhome;
1594: } else {
1595: $uhom=&homeserver($uname,$udom);
1596: }
1597: if ($uhom ne 'no_host') {
1598: if ($servers{$uhom}) {
1599: $servers{$uhom}.='&'.&escape($id);
1600: } else {
1601: $servers{$uhom}=&escape($id);
1602: }
1603: }
1604: }
1605: foreach my $server (keys(%servers)) {
1606: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1607: }
1608: return %result;
1609: }
1610:
1611: # ------------------------------dump from db file owned by domainconfig user
1612: sub dump_dom {
1613: my ($namespace, $udom, $regexp) = @_;
1614:
1615: $udom ||= $env{'user.domain'};
1616:
1617: return () unless $udom;
1618:
1619: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1620: }
1621:
1622: # ------------------------------------------ get items from domain db files
1623:
1624: sub get_dom {
1625: my ($namespace,$storearr,$udom,$uhome)=@_;
1626: my $items='';
1627: foreach my $item (@$storearr) {
1628: $items.=&escape($item).'&';
1629: }
1630: $items=~s/\&$//;
1631: if (!$udom) {
1632: $udom=$env{'user.domain'};
1633: if (defined(&domain($udom,'primary'))) {
1634: $uhome=&domain($udom,'primary');
1635: } else {
1636: undef($uhome);
1637: }
1638: } else {
1639: if (!$uhome) {
1640: if (defined(&domain($udom,'primary'))) {
1641: $uhome=&domain($udom,'primary');
1642: }
1643: }
1644: }
1645: if ($udom && $uhome && ($uhome ne 'no_host')) {
1646: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1647: my %returnhash;
1648: if ($rep eq '' || $rep =~ /^error: 2 /) {
1649: return %returnhash;
1650: }
1651: my @pairs=split(/\&/,$rep);
1652: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1653: return @pairs;
1654: }
1655: my $i=0;
1656: foreach my $item (@$storearr) {
1657: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1658: $i++;
1659: }
1660: return %returnhash;
1661: } else {
1662: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1663: }
1664: }
1665:
1666: # -------------------------------------------- put items in domain db files
1667:
1668: sub put_dom {
1669: my ($namespace,$storehash,$udom,$uhome)=@_;
1670: if (!$udom) {
1671: $udom=$env{'user.domain'};
1672: if (defined(&domain($udom,'primary'))) {
1673: $uhome=&domain($udom,'primary');
1674: } else {
1675: undef($uhome);
1676: }
1677: } else {
1678: if (!$uhome) {
1679: if (defined(&domain($udom,'primary'))) {
1680: $uhome=&domain($udom,'primary');
1681: }
1682: }
1683: }
1684: if ($udom && $uhome && ($uhome ne 'no_host')) {
1685: my $items='';
1686: foreach my $item (keys(%$storehash)) {
1687: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1688: }
1689: $items=~s/\&$//;
1690: return &reply("putdom:$udom:$namespace:$items",$uhome);
1691: } else {
1692: &logthis("put_dom failed - no homeserver and/or domain");
1693: }
1694: }
1695:
1696: # --------------------- newput for items in db file owned by domainconfig user
1697: sub newput_dom {
1698: my ($namespace,$storehash,$udom) = @_;
1699: my $result;
1700: if (!$udom) {
1701: $udom=$env{'user.domain'};
1702: }
1703: if ($udom) {
1704: my $uname = &get_domainconfiguser($udom);
1705: $result = &newput($namespace,$storehash,$udom,$uname);
1706: }
1707: return $result;
1708: }
1709:
1710: # --------------------- delete for items in db file owned by domainconfig user
1711: sub del_dom {
1712: my ($namespace,$storearr,$udom)=@_;
1713: if (ref($storearr) eq 'ARRAY') {
1714: if (!$udom) {
1715: $udom=$env{'user.domain'};
1716: }
1717: if ($udom) {
1718: my $uname = &get_domainconfiguser($udom);
1719: return &del($namespace,$storearr,$udom,$uname);
1720: }
1721: }
1722: }
1723:
1724: # ----------------------------------construct domainconfig user for a domain
1725: sub get_domainconfiguser {
1726: my ($udom) = @_;
1727: return $udom.'-domainconfig';
1728: }
1729:
1730: sub retrieve_inst_usertypes {
1731: my ($udom) = @_;
1732: my (%returnhash,@order);
1733: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1734: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1735: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1736: %returnhash = %{$domdefs{'inststatustypes'}};
1737: @order = @{$domdefs{'inststatusorder'}};
1738: } else {
1739: if (defined(&domain($udom,'primary'))) {
1740: my $uhome=&domain($udom,'primary');
1741: my $rep=&reply("inst_usertypes:$udom",$uhome);
1742: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1743: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1744: return (\%returnhash,\@order);
1745: }
1746: my ($hashitems,$orderitems) = split(/:/,$rep);
1747: my @pairs=split(/\&/,$hashitems);
1748: foreach my $item (@pairs) {
1749: my ($key,$value)=split(/=/,$item,2);
1750: $key = &unescape($key);
1751: next if ($key =~ /^error: 2 /);
1752: $returnhash{$key}=&thaw_unescape($value);
1753: }
1754: my @esc_order = split(/\&/,$orderitems);
1755: foreach my $item (@esc_order) {
1756: push(@order,&unescape($item));
1757: }
1758: } else {
1759: &logthis("get_dom failed - no primary domain server for $udom");
1760: }
1761: }
1762: return (\%returnhash,\@order);
1763: }
1764:
1765: sub is_domainimage {
1766: my ($url) = @_;
1767: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1768: if (&domain($1) ne '') {
1769: return '1';
1770: }
1771: }
1772: return;
1773: }
1774:
1775: sub inst_directory_query {
1776: my ($srch) = @_;
1777: my $udom = $srch->{'srchdomain'};
1778: my %results;
1779: my $homeserver = &domain($udom,'primary');
1780: my $outcome;
1781: if ($homeserver ne '') {
1782: my $queryid=&reply("querysend:instdirsearch:".
1783: &escape($srch->{'srchby'}).':'.
1784: &escape($srch->{'srchterm'}).':'.
1785: &escape($srch->{'srchtype'}),$homeserver);
1786: my $host=&hostname($homeserver);
1787: if ($queryid !~/^\Q$host\E\_/) {
1788: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1789: return;
1790: }
1791: my $response = &get_query_reply($queryid);
1792: my $maxtries = 5;
1793: my $tries = 1;
1794: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1795: $response = &get_query_reply($queryid);
1796: $tries ++;
1797: }
1798:
1799: if (!&error($response) && $response ne 'refused') {
1800: if ($response eq 'unavailable') {
1801: $outcome = $response;
1802: } else {
1803: $outcome = 'ok';
1804: my @matches = split(/\n/,$response);
1805: foreach my $match (@matches) {
1806: my ($key,$value) = split(/=/,$match);
1807: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1808: }
1809: }
1810: }
1811: }
1812: return ($outcome,%results);
1813: }
1814:
1815: sub usersearch {
1816: my ($srch) = @_;
1817: my $dom = $srch->{'srchdomain'};
1818: my %results;
1819: my %libserv = &all_library();
1820: my $query = 'usersearch';
1821: foreach my $tryserver (keys(%libserv)) {
1822: if (&host_domain($tryserver) eq $dom) {
1823: my $host=&hostname($tryserver);
1824: my $queryid=
1825: &reply("querysend:".&escape($query).':'.
1826: &escape($srch->{'srchby'}).':'.
1827: &escape($srch->{'srchtype'}).':'.
1828: &escape($srch->{'srchterm'}),$tryserver);
1829: if ($queryid !~/^\Q$host\E\_/) {
1830: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1831: next;
1832: }
1833: my $reply = &get_query_reply($queryid);
1834: my $maxtries = 1;
1835: my $tries = 1;
1836: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1837: $reply = &get_query_reply($queryid);
1838: $tries ++;
1839: }
1840: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1841: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1842: } else {
1843: my @matches;
1844: if ($reply =~ /\n/) {
1845: @matches = split(/\n/,$reply);
1846: } else {
1847: @matches = split(/\&/,$reply);
1848: }
1849: foreach my $match (@matches) {
1850: my ($uname,$udom,%userhash);
1851: foreach my $entry (split(/:/,$match)) {
1852: my ($key,$value) =
1853: map {&unescape($_);} split(/=/,$entry);
1854: $userhash{$key} = $value;
1855: if ($key eq 'username') {
1856: $uname = $value;
1857: } elsif ($key eq 'domain') {
1858: $udom = $value;
1859: }
1860: }
1861: $results{$uname.':'.$udom} = \%userhash;
1862: }
1863: }
1864: }
1865: }
1866: return %results;
1867: }
1868:
1869: sub get_instuser {
1870: my ($udom,$uname,$id) = @_;
1871: my $homeserver = &domain($udom,'primary');
1872: my ($outcome,%results);
1873: if ($homeserver ne '') {
1874: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1875: &escape($id).':'.&escape($udom),$homeserver);
1876: my $host=&hostname($homeserver);
1877: if ($queryid !~/^\Q$host\E\_/) {
1878: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1879: return;
1880: }
1881: my $response = &get_query_reply($queryid);
1882: my $maxtries = 5;
1883: my $tries = 1;
1884: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1885: $response = &get_query_reply($queryid);
1886: $tries ++;
1887: }
1888: if (!&error($response) && $response ne 'refused') {
1889: if ($response eq 'unavailable') {
1890: $outcome = $response;
1891: } else {
1892: $outcome = 'ok';
1893: my @matches = split(/\n/,$response);
1894: foreach my $match (@matches) {
1895: my ($key,$value) = split(/=/,$match);
1896: $results{&unescape($key)} = &thaw_unescape($value);
1897: }
1898: }
1899: }
1900: }
1901: my %userinfo;
1902: if (ref($results{$uname}) eq 'HASH') {
1903: %userinfo = %{$results{$uname}};
1904: }
1905: return ($outcome,%userinfo);
1906: }
1907:
1908: sub inst_rulecheck {
1909: my ($udom,$uname,$id,$item,$rules) = @_;
1910: my %returnhash;
1911: if ($udom ne '') {
1912: if (ref($rules) eq 'ARRAY') {
1913: @{$rules} = map {&escape($_);} (@{$rules});
1914: my $rulestr = join(':',@{$rules});
1915: my $homeserver=&domain($udom,'primary');
1916: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1917: my $response;
1918: if ($item eq 'username') {
1919: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1920: ':'.&escape($uname).':'.$rulestr,
1921: $homeserver));
1922: } elsif ($item eq 'id') {
1923: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1924: ':'.&escape($id).':'.$rulestr,
1925: $homeserver));
1926: } elsif ($item eq 'selfcreate') {
1927: $response=&unescape(&reply('instselfcreatecheck:'.
1928: &escape($udom).':'.&escape($uname).
1929: ':'.$rulestr,$homeserver));
1930: }
1931: if ($response ne 'refused') {
1932: my @pairs=split(/\&/,$response);
1933: foreach my $item (@pairs) {
1934: my ($key,$value)=split(/=/,$item,2);
1935: $key = &unescape($key);
1936: next if ($key =~ /^error: 2 /);
1937: $returnhash{$key}=&thaw_unescape($value);
1938: }
1939: }
1940: }
1941: }
1942: }
1943: return %returnhash;
1944: }
1945:
1946: sub inst_userrules {
1947: my ($udom,$check) = @_;
1948: my (%ruleshash,@ruleorder);
1949: if ($udom ne '') {
1950: my $homeserver=&domain($udom,'primary');
1951: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1952: my $response;
1953: if ($check eq 'id') {
1954: $response=&reply('instidrules:'.&escape($udom),
1955: $homeserver);
1956: } elsif ($check eq 'email') {
1957: $response=&reply('instemailrules:'.&escape($udom),
1958: $homeserver);
1959: } else {
1960: $response=&reply('instuserrules:'.&escape($udom),
1961: $homeserver);
1962: }
1963: if (($response ne 'refused') && ($response ne 'error') &&
1964: ($response ne 'unknown_cmd') &&
1965: ($response ne 'no_such_host')) {
1966: my ($hashitems,$orderitems) = split(/:/,$response);
1967: my @pairs=split(/\&/,$hashitems);
1968: foreach my $item (@pairs) {
1969: my ($key,$value)=split(/=/,$item,2);
1970: $key = &unescape($key);
1971: next if ($key =~ /^error: 2 /);
1972: $ruleshash{$key}=&thaw_unescape($value);
1973: }
1974: my @esc_order = split(/\&/,$orderitems);
1975: foreach my $item (@esc_order) {
1976: push(@ruleorder,&unescape($item));
1977: }
1978: }
1979: }
1980: }
1981: return (\%ruleshash,\@ruleorder);
1982: }
1983:
1984: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1985:
1986: sub get_domain_defaults {
1987: my ($domain) = @_;
1988: my $cachetime = 60*60*24;
1989: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1990: if (defined($cached)) {
1991: if (ref($result) eq 'HASH') {
1992: return %{$result};
1993: }
1994: }
1995: my %domdefaults;
1996: my %domconfig =
1997: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1998: 'requestcourses','inststatus',
1999: 'coursedefaults','usersessions',
2000: 'requestauthor'],$domain);
2001: if (ref($domconfig{'defaults'}) eq 'HASH') {
2002: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2003: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2004: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2005: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2006: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2007: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2008: } else {
2009: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2010: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2011: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2012: }
2013: if (ref($domconfig{'quotas'}) eq 'HASH') {
2014: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2015: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2016: } else {
2017: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2018: }
2019: my @usertools = ('aboutme','blog','webdav','portfolio');
2020: foreach my $item (@usertools) {
2021: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2022: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2023: }
2024: }
2025: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2026: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2027: }
2028: }
2029: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2030: foreach my $item ('official','unofficial','community') {
2031: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2032: }
2033: }
2034: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2035: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2036: }
2037: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2038: foreach my $item ('inststatustypes','inststatusorder') {
2039: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2040: }
2041: }
2042: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2043: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2044: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2045: $domdefaults{'officialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'official'};
2046: $domdefaults{'unofficialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'unofficial'};
2047: }
2048: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2049: $domdefaults{'officialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'official'};
2050: $domdefaults{'unofficialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'unofficial'};
2051: $domdefaults{'communityquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'community'};
2052: }
2053: }
2054: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2055: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2056: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2057: }
2058: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2059: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2060: }
2061: }
2062: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2063: return %domdefaults;
2064: }
2065:
2066: # --------------------------------------------------- Assign a key to a student
2067:
2068: sub assign_access_key {
2069: #
2070: # a valid key looks like uname:udom#comments
2071: # comments are being appended
2072: #
2073: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2074: $kdom=
2075: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2076: $knum=
2077: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2078: $cdom=
2079: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2080: $cnum=
2081: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2082: $udom=$env{'user.name'} unless (defined($udom));
2083: $uname=$env{'user.domain'} unless (defined($uname));
2084: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2085: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2086: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2087: # assigned to this person
2088: # - this should not happen,
2089: # unless something went wrong
2090: # the first time around
2091: # ready to assign
2092: $logentry=$1.'; '.$logentry;
2093: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2094: $kdom,$knum) eq 'ok') {
2095: # key now belongs to user
2096: my $envkey='key.'.$cdom.'_'.$cnum;
2097: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2098: &appenv({'environment.'.$envkey => $ckey});
2099: return 'ok';
2100: } else {
2101: return
2102: 'error: Count not permanently assign key, will need to be re-entered later.';
2103: }
2104: } else {
2105: return 'error: Could not assign key, try again later.';
2106: }
2107: } elsif (!$existing{$ckey}) {
2108: # the key does not exist
2109: return 'error: The key does not exist';
2110: } else {
2111: # the key is somebody else's
2112: return 'error: The key is already in use';
2113: }
2114: }
2115:
2116: # ------------------------------------------ put an additional comment on a key
2117:
2118: sub comment_access_key {
2119: #
2120: # a valid key looks like uname:udom#comments
2121: # comments are being appended
2122: #
2123: my ($ckey,$cdom,$cnum,$logentry)=@_;
2124: $cdom=
2125: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2126: $cnum=
2127: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2128: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2129: if ($existing{$ckey}) {
2130: $existing{$ckey}.='; '.$logentry;
2131: # ready to assign
2132: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2133: $cdom,$cnum) eq 'ok') {
2134: return 'ok';
2135: } else {
2136: return 'error: Count not store comment.';
2137: }
2138: } else {
2139: # the key does not exist
2140: return 'error: The key does not exist';
2141: }
2142: }
2143:
2144: # ------------------------------------------------------ Generate a set of keys
2145:
2146: sub generate_access_keys {
2147: my ($number,$cdom,$cnum,$logentry)=@_;
2148: $cdom=
2149: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2150: $cnum=
2151: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2152: unless (&allowed('mky',$cdom)) { return 0; }
2153: unless (($cdom) && ($cnum)) { return 0; }
2154: if ($number>10000) { return 0; }
2155: sleep(2); # make sure don't get same seed twice
2156: srand(time()^($$+($$<<15))); # from "Programming Perl"
2157: my $total=0;
2158: for (my $i=1;$i<=$number;$i++) {
2159: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2160: sprintf("%lx",int(100000*rand)).'-'.
2161: sprintf("%lx",int(100000*rand));
2162: $newkey=~s/1/g/g; # folks mix up 1 and l
2163: $newkey=~s/0/h/g; # and also 0 and O
2164: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2165: if ($existing{$newkey}) {
2166: $i--;
2167: } else {
2168: if (&put('accesskeys',
2169: { $newkey => '# generated '.localtime().
2170: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2171: '; '.$logentry },
2172: $cdom,$cnum) eq 'ok') {
2173: $total++;
2174: }
2175: }
2176: }
2177: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2178: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2179: return $total;
2180: }
2181:
2182: # ------------------------------------------------------- Validate an accesskey
2183:
2184: sub validate_access_key {
2185: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2186: $cdom=
2187: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2188: $cnum=
2189: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2190: $udom=$env{'user.domain'} unless (defined($udom));
2191: $uname=$env{'user.name'} unless (defined($uname));
2192: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2193: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2194: }
2195:
2196: # ------------------------------------- Find the section of student in a course
2197: sub devalidate_getsection_cache {
2198: my ($udom,$unam,$courseid)=@_;
2199: my $hashid="$udom:$unam:$courseid";
2200: &devalidate_cache_new('getsection',$hashid);
2201: }
2202:
2203: sub courseid_to_courseurl {
2204: my ($courseid) = @_;
2205: #already url style courseid
2206: return $courseid if ($courseid =~ m{^/});
2207:
2208: if (exists($env{'course.'.$courseid.'.num'})) {
2209: my $cnum = $env{'course.'.$courseid.'.num'};
2210: my $cdom = $env{'course.'.$courseid.'.domain'};
2211: return "/$cdom/$cnum";
2212: }
2213:
2214: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2215: if (exists($courseinfo{'num'})) {
2216: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2217: }
2218:
2219: return undef;
2220: }
2221:
2222: sub getsection {
2223: my ($udom,$unam,$courseid)=@_;
2224: my $cachetime=1800;
2225:
2226: my $hashid="$udom:$unam:$courseid";
2227: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2228: if (defined($cached)) { return $result; }
2229:
2230: my %Pending;
2231: my %Expired;
2232: #
2233: # Each role can either have not started yet (pending), be active,
2234: # or have expired.
2235: #
2236: # If there is an active role, we are done.
2237: #
2238: # If there is more than one role which has not started yet,
2239: # choose the one which will start sooner
2240: # If there is one role which has not started yet, return it.
2241: #
2242: # If there is more than one expired role, choose the one which ended last.
2243: # If there is a role which has expired, return it.
2244: #
2245: $courseid = &courseid_to_courseurl($courseid);
2246: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2247: foreach my $key (keys(%roleshash)) {
2248: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2249: my $section=$1;
2250: if ($key eq $courseid.'_st') { $section=''; }
2251: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2252: my $now=time;
2253: if (defined($end) && $end && ($now > $end)) {
2254: $Expired{$end}=$section;
2255: next;
2256: }
2257: if (defined($start) && $start && ($now < $start)) {
2258: $Pending{$start}=$section;
2259: next;
2260: }
2261: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2262: }
2263: #
2264: # Presumedly there will be few matching roles from the above
2265: # loop and the sorting time will be negligible.
2266: if (scalar(keys(%Pending))) {
2267: my ($time) = sort {$a <=> $b} keys(%Pending);
2268: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2269: }
2270: if (scalar(keys(%Expired))) {
2271: my @sorted = sort {$a <=> $b} keys(%Expired);
2272: my $time = pop(@sorted);
2273: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2274: }
2275: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2276: }
2277:
2278: sub save_cache {
2279: &purge_remembered();
2280: #&Apache::loncommon::validate_page();
2281: undef(%env);
2282: undef($env_loaded);
2283: }
2284:
2285: my $to_remember=-1;
2286: my %remembered;
2287: my %accessed;
2288: my $kicks=0;
2289: my $hits=0;
2290: sub make_key {
2291: my ($name,$id) = @_;
2292: if (length($id) > 65
2293: && length(&escape($id)) > 200) {
2294: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2295: }
2296: return &escape($name.':'.$id);
2297: }
2298:
2299: sub devalidate_cache_new {
2300: my ($name,$id,$debug) = @_;
2301: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2302: $id=&make_key($name,$id);
2303: $memcache->delete($id);
2304: delete($remembered{$id});
2305: delete($accessed{$id});
2306: }
2307:
2308: sub is_cached_new {
2309: my ($name,$id,$debug) = @_;
2310: $id=&make_key($name,$id);
2311: if (exists($remembered{$id})) {
2312: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2313: $accessed{$id}=[&gettimeofday()];
2314: $hits++;
2315: return ($remembered{$id},1);
2316: }
2317: my $value = $memcache->get($id);
2318: if (!(defined($value))) {
2319: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2320: return (undef,undef);
2321: }
2322: if ($value eq '__undef__') {
2323: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2324: $value=undef;
2325: }
2326: &make_room($id,$value,$debug);
2327: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2328: return ($value,1);
2329: }
2330:
2331: sub do_cache_new {
2332: my ($name,$id,$value,$time,$debug) = @_;
2333: $id=&make_key($name,$id);
2334: my $setvalue=$value;
2335: if (!defined($setvalue)) {
2336: $setvalue='__undef__';
2337: }
2338: if (!defined($time) ) {
2339: $time=600;
2340: }
2341: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2342: my $result = $memcache->set($id,$setvalue,$time);
2343: if (! $result) {
2344: &logthis("caching of id -> $id failed");
2345: $memcache->disconnect_all();
2346: }
2347: # need to make a copy of $value
2348: &make_room($id,$value,$debug);
2349: return $value;
2350: }
2351:
2352: sub make_room {
2353: my ($id,$value,$debug)=@_;
2354:
2355: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2356: : $value;
2357: if ($to_remember<0) { return; }
2358: $accessed{$id}=[&gettimeofday()];
2359: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2360: my $to_kick;
2361: my $max_time=0;
2362: foreach my $other (keys(%accessed)) {
2363: if (&tv_interval($accessed{$other}) > $max_time) {
2364: $to_kick=$other;
2365: $max_time=&tv_interval($accessed{$other});
2366: }
2367: }
2368: delete($remembered{$to_kick});
2369: delete($accessed{$to_kick});
2370: $kicks++;
2371: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2372: return;
2373: }
2374:
2375: sub purge_remembered {
2376: #&logthis("Tossing ".scalar(keys(%remembered)));
2377: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2378: undef(%remembered);
2379: undef(%accessed);
2380: }
2381: # ------------------------------------- Read an entry from a user's environment
2382:
2383: sub userenvironment {
2384: my ($udom,$unam,@what)=@_;
2385: my $items;
2386: foreach my $item (@what) {
2387: $items.=&escape($item).'&';
2388: }
2389: $items=~s/\&$//;
2390: my %returnhash=();
2391: my $uhome = &homeserver($unam,$udom);
2392: unless ($uhome eq 'no_host') {
2393: my @answer=split(/\&/,
2394: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2395: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2396: return %returnhash;
2397: }
2398: my $i;
2399: for ($i=0;$i<=$#what;$i++) {
2400: $returnhash{$what[$i]}=&unescape($answer[$i]);
2401: }
2402: }
2403: return %returnhash;
2404: }
2405:
2406: # ---------------------------------------------------------- Get a studentphoto
2407: sub studentphoto {
2408: my ($udom,$unam,$ext) = @_;
2409: my $home=&Apache::lonnet::homeserver($unam,$udom);
2410: if (defined($env{'request.course.id'})) {
2411: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2412: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2413: return(&retrievestudentphoto($udom,$unam,$ext));
2414: } else {
2415: my ($result,$perm_reqd)=
2416: &Apache::lonnet::auto_photo_permission($unam,$udom);
2417: if ($result eq 'ok') {
2418: if (!($perm_reqd eq 'yes')) {
2419: return(&retrievestudentphoto($udom,$unam,$ext));
2420: }
2421: }
2422: }
2423: }
2424: } else {
2425: my ($result,$perm_reqd) =
2426: &Apache::lonnet::auto_photo_permission($unam,$udom);
2427: if ($result eq 'ok') {
2428: if (!($perm_reqd eq 'yes')) {
2429: return(&retrievestudentphoto($udom,$unam,$ext));
2430: }
2431: }
2432: }
2433: return '/adm/lonKaputt/lonlogo_broken.gif';
2434: }
2435:
2436: sub retrievestudentphoto {
2437: my ($udom,$unam,$ext,$type) = @_;
2438: my $home=&Apache::lonnet::homeserver($unam,$udom);
2439: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2440: if ($ret eq 'ok') {
2441: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2442: if ($type eq 'thumbnail') {
2443: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2444: }
2445: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2446: return $tokenurl;
2447: } else {
2448: if ($type eq 'thumbnail') {
2449: return '/adm/lonKaputt/genericstudent_tn.gif';
2450: } else {
2451: return '/adm/lonKaputt/lonlogo_broken.gif';
2452: }
2453: }
2454: }
2455:
2456: # -------------------------------------------------------------------- New chat
2457:
2458: sub chatsend {
2459: my ($newentry,$anon,$group)=@_;
2460: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2461: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2462: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2463: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2464: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2465: &escape($newentry)).':'.$group,$chome);
2466: }
2467:
2468: # ------------------------------------------ Find current version of a resource
2469:
2470: sub getversion {
2471: my $fname=&clutter(shift);
2472: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2473: return ¤tversion(&filelocation('',$fname));
2474: }
2475:
2476: sub currentversion {
2477: my $fname=shift;
2478: my $author=$fname;
2479: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2480: my ($udom,$uname)=split(/\//,$author);
2481: my $home=&homeserver($uname,$udom);
2482: if ($home eq 'no_host') {
2483: return -1;
2484: }
2485: my $answer=&reply("currentversion:$fname",$home);
2486: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2487: return -1;
2488: }
2489: return $answer;
2490: }
2491:
2492: #
2493: # Return special version number of resource if set by override, empty otherwise
2494: #
2495: sub usedversion {
2496: my $fname=shift;
2497: unless ($fname) { $fname=$env{'request.uri'}; }
2498: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2499: if ($urlversion) { return $urlversion; }
2500: return '';
2501: }
2502:
2503: # ----------------------------- Subscribe to a resource, return URL if possible
2504:
2505: sub subscribe {
2506: my $fname=shift;
2507: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2508: $fname=~s/[\n\r]//g;
2509: my $author=$fname;
2510: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2511: my ($udom,$uname)=split(/\//,$author);
2512: my $home=homeserver($uname,$udom);
2513: if ($home eq 'no_host') {
2514: return 'not_found';
2515: }
2516: my $answer=reply("sub:$fname",$home);
2517: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2518: $answer.=' by '.$home;
2519: }
2520: return $answer;
2521: }
2522:
2523: # -------------------------------------------------------------- Replicate file
2524:
2525: sub repcopy {
2526: my $filename=shift;
2527: $filename=~s/\/+/\//g;
2528: my $londocroot = $perlvar{'lonDocRoot'};
2529: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2530: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2531: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2532: $filename=~m{^/*(uploaded|editupload)/}) {
2533: return &repcopy_userfile($filename);
2534: }
2535: $filename=~s/[\n\r]//g;
2536: my $transname="$filename.in.transfer";
2537: # FIXME: this should flock
2538: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2539: my $remoteurl=subscribe($filename);
2540: if ($remoteurl =~ /^con_lost by/) {
2541: &logthis("Subscribe returned $remoteurl: $filename");
2542: return 'unavailable';
2543: } elsif ($remoteurl eq 'not_found') {
2544: #&logthis("Subscribe returned not_found: $filename");
2545: return 'not_found';
2546: } elsif ($remoteurl =~ /^rejected by/) {
2547: &logthis("Subscribe returned $remoteurl: $filename");
2548: return 'forbidden';
2549: } elsif ($remoteurl eq 'directory') {
2550: return 'ok';
2551: } else {
2552: my $author=$filename;
2553: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2554: my ($udom,$uname)=split(/\//,$author);
2555: my $home=homeserver($uname,$udom);
2556: unless ($home eq $perlvar{'lonHostID'}) {
2557: my @parts=split(/\//,$filename);
2558: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2559: if ($path ne "$londocroot/res") {
2560: &logthis("Malconfiguration for replication: $filename");
2561: return 'bad_request';
2562: }
2563: my $count;
2564: for ($count=5;$count<$#parts;$count++) {
2565: $path.="/$parts[$count]";
2566: if ((-e $path)!=1) {
2567: mkdir($path,0777);
2568: }
2569: }
2570: my $ua=new LWP::UserAgent;
2571: my $request=new HTTP::Request('GET',"$remoteurl");
2572: my $response=$ua->request($request,$transname);
2573: if ($response->is_error()) {
2574: unlink($transname);
2575: my $message=$response->status_line;
2576: &logthis("<font color=\"blue\">WARNING:"
2577: ." LWP get: $message: $filename</font>");
2578: return 'unavailable';
2579: } else {
2580: if ($remoteurl!~/\.meta$/) {
2581: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2582: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2583: if ($mresponse->is_error()) {
2584: unlink($filename.'.meta');
2585: &logthis(
2586: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2587: }
2588: }
2589: rename($transname,$filename);
2590: return 'ok';
2591: }
2592: }
2593: }
2594: }
2595:
2596: # ------------------------------------------------ Get server side include body
2597: sub ssi_body {
2598: my ($filelink,%form)=@_;
2599: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2600: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2601: }
2602: my $output='';
2603: my $response;
2604: if ($filelink=~/^https?\:/) {
2605: ($output,$response)=&externalssi($filelink);
2606: } else {
2607: $filelink .= $filelink=~/\?/ ? '&' : '?';
2608: $filelink .= 'inhibitmenu=yes';
2609: ($output,$response)=&ssi($filelink,%form);
2610: }
2611: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2612: $output=~s/^.*?\<body[^\>]*\>//si;
2613: $output=~s/\<\/body\s*\>.*?$//si;
2614: if (wantarray) {
2615: return ($output, $response);
2616: } else {
2617: return $output;
2618: }
2619: }
2620:
2621: # --------------------------------------------------------- Server Side Include
2622:
2623: sub absolute_url {
2624: my ($host_name) = @_;
2625: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2626: if ($host_name eq '') {
2627: $host_name = $ENV{'SERVER_NAME'};
2628: }
2629: return $protocol.$host_name;
2630: }
2631:
2632: #
2633: # Server side include.
2634: # Parameters:
2635: # fn Possibly encrypted resource name/id.
2636: # form Hash that describes how the rendering should be done
2637: # and other things.
2638: # Returns:
2639: # Scalar context: The content of the response.
2640: # Array context: 2 element list of the content and the full response object.
2641: #
2642: sub ssi {
2643:
2644: my ($fn,%form)=@_;
2645: my $ua=new LWP::UserAgent;
2646: my $request;
2647:
2648: $form{'no_update_last_known'}=1;
2649: &Apache::lonenc::check_encrypt(\$fn);
2650: if (%form) {
2651: $request=new HTTP::Request('POST',&absolute_url().$fn);
2652: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2653: } else {
2654: $request=new HTTP::Request('GET',&absolute_url().$fn);
2655: }
2656:
2657: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2658: my $response= $ua->request($request);
2659: my $content = $response->content;
2660:
2661:
2662: if (wantarray) {
2663: return ($content, $response);
2664: } else {
2665: return $content;
2666: }
2667: }
2668:
2669: sub externalssi {
2670: my ($url)=@_;
2671: my $ua=new LWP::UserAgent;
2672: my $request=new HTTP::Request('GET',$url);
2673: my $response=$ua->request($request);
2674: if (wantarray) {
2675: return ($response->content, $response);
2676: } else {
2677: return $response->content;
2678: }
2679: }
2680:
2681: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2682:
2683: sub allowuploaded {
2684: my ($srcurl,$url)=@_;
2685: $url=&clutter(&declutter($url));
2686: my $dir=$url;
2687: $dir=~s/\/[^\/]+$//;
2688: my %httpref=();
2689: my $httpurl=&hreflocation('',$url);
2690: $httpref{'httpref.'.$httpurl}=$srcurl;
2691: &Apache::lonnet::appenv(\%httpref);
2692: }
2693:
2694: #
2695: # Determine if the current user should be able to edit a particular resource,
2696: # when viewing in course context.
2697: # (a) When viewing resource used to determine if "Edit" item is included in
2698: # Functions.
2699: # (b) When displaying folder contents in course editor, used to determine if
2700: # "Edit" link will be displayed alongside resource.
2701: #
2702: # input: six args -- filename (decluttered), course number, course domain,
2703: # url, symb (if registered) and group (if this is a group
2704: # item -- e.g., bulletin board, group page etc.).
2705: # output: array of five scalars --
2706: # $cfile -- url for file editing if editable on current server
2707: # $home -- homeserver of resource (i.e., for author if published,
2708: # or course if uploaded.).
2709: # $switchserver -- 1 if server switch will be needed.
2710: # $forceedit -- 1 if icon/link should be to go to edit mode
2711: # $forceview -- 1 if icon/link should be to go to view mode
2712: #
2713:
2714: sub can_edit_resource {
2715: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2716: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2717: #
2718: # For aboutme pages user can only edit his/her own.
2719: #
2720: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2721: my ($sdom,$sname) = ($1,$2);
2722: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2723: $home = $env{'user.home'};
2724: $cfile = $resurl;
2725: if ($env{'form.forceedit'}) {
2726: $forceview = 1;
2727: } else {
2728: $forceedit = 1;
2729: }
2730: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2731: } else {
2732: return;
2733: }
2734: }
2735:
2736: if ($env{'request.course.id'}) {
2737: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2738: if ($group ne '') {
2739: # if this is a group homepage or group bulletin board, check group privs
2740: my $allowed = 0;
2741: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2742: if ((&allowed('mdg',$env{'request.course.id'}.
2743: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2744: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2745: $allowed = 1;
2746: }
2747: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2748: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2749: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2750: $allowed = 1;
2751: }
2752: }
2753: if ($allowed) {
2754: $home=&homeserver($cnum,$cdom);
2755: if ($env{'form.forceedit'}) {
2756: $forceview = 1;
2757: } else {
2758: $forceedit = 1;
2759: }
2760: $cfile = $resurl;
2761: } else {
2762: return;
2763: }
2764: } else {
2765: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2766: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2767: return;
2768: }
2769: } elsif (!$crsedit) {
2770: #
2771: # No edit allowed where CC has switched to student role.
2772: #
2773: return;
2774: }
2775: }
2776: }
2777:
2778: if ($file ne '') {
2779: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2780: if (&is_course_upload($file,$cnum,$cdom)) {
2781: $uploaded = 1;
2782: $incourse = 1;
2783: if ($file =~/\.(htm|html|css|js|txt)$/) {
2784: $cfile = &hreflocation('',$file);
2785: if ($env{'form.forceedit'}) {
2786: $forceview = 1;
2787: } else {
2788: $forceedit = 1;
2789: }
2790: }
2791: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2792: $incourse = 1;
2793: if ($env{'form.forceedit'}) {
2794: $forceview = 1;
2795: } else {
2796: $forceedit = 1;
2797: }
2798: $cfile = $resurl;
2799: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2800: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2801: $incourse = 1;
2802: if ($env{'form.forceedit'}) {
2803: $forceview = 1;
2804: } else {
2805: $forceedit = 1;
2806: }
2807: $cfile = $resurl;
2808: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2809: $incourse = 1;
2810: $cfile = $resurl.'/smpedit';
2811: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2812: $incourse = 1;
2813: if ($env{'form.forceedit'}) {
2814: $forceview = 1;
2815: } else {
2816: $forceedit = 1;
2817: }
2818: $cfile = $resurl;
2819: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2820: $incourse = 1;
2821: if ($env{'form.forceedit'}) {
2822: $forceview = 1;
2823: } else {
2824: $forceedit = 1;
2825: }
2826: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2827: }
2828: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2829: my $template = '/res/lib/templates/simpleproblem.problem';
2830: if (&is_on_map($template)) {
2831: $incourse = 1;
2832: $forceview = 1;
2833: $cfile = $template;
2834: }
2835: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2836: $incourse = 1;
2837: if ($env{'form.forceedit'}) {
2838: $forceview = 1;
2839: } else {
2840: $forceedit = 1;
2841: }
2842: $cfile = $resurl;
2843: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2844: $incourse = 1;
2845: $forceview = 1;
2846: if ($symb) {
2847: my ($map,$id,$res)=&decode_symb($symb);
2848: $env{'request.symb'} = $symb;
2849: $cfile = &clutter($res);
2850: } else {
2851: $cfile = $env{'form.suppurl'};
2852: $cfile =~ s{^http://}{};
2853: $cfile = '/adm/wrapper/ext/'.$cfile;
2854: }
2855: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2856: if ($env{'form.forceedit'}) {
2857: $forceview = 1;
2858: } else {
2859: $forceedit = 1;
2860: }
2861: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2862: }
2863: }
2864: if ($uploaded || $incourse) {
2865: $home=&homeserver($cnum,$cdom);
2866: } elsif ($file !~ m{/$}) {
2867: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2868: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2869: # Check that the user has permission to edit this resource
2870: my $setpriv = 1;
2871: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2872: if (defined($cfudom)) {
2873: $home=&homeserver($cfuname,$cfudom);
2874: $cfile=$file;
2875: }
2876: }
2877: if (($cfile ne '') && (!$incourse || $uploaded) &&
2878: (($home ne '') && ($home ne 'no_host'))) {
2879: my @ids=¤t_machine_ids();
2880: unless (grep(/^\Q$home\E$/,@ids)) {
2881: $switchserver=1;
2882: }
2883: }
2884: }
2885: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2886: }
2887:
2888: sub is_course_upload {
2889: my ($file,$cnum,$cdom) = @_;
2890: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2891: $uploadpath =~ s{^\/}{};
2892: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2893: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2894: return 1;
2895: }
2896: return;
2897: }
2898:
2899: sub in_course {
2900: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2901: if ($hideprivileged) {
2902: my $skipuser;
2903: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2904: my @possdoms = ($cdom);
2905: if ($coursehash{'checkforpriv'}) {
2906: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
2907: }
2908: if (&privileged($uname,$udom,\@possdoms)) {
2909: $skipuser = 1;
2910: if ($coursehash{'nothideprivileged'}) {
2911: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2912: my $user;
2913: if ($item =~ /:/) {
2914: $user = $item;
2915: } else {
2916: $user = join(':',split(/[\@]/,$item));
2917: }
2918: if ($user eq $uname.':'.$udom) {
2919: undef($skipuser);
2920: last;
2921: }
2922: }
2923: }
2924: if ($skipuser) {
2925: return 0;
2926: }
2927: }
2928: }
2929: $type ||= 'any';
2930: if (!defined($cdom) || !defined($cnum)) {
2931: my $cid = $env{'request.course.id'};
2932: $cdom = $env{'course.'.$cid.'.domain'};
2933: $cnum = $env{'course.'.$cid.'.num'};
2934: }
2935: my $typesref;
2936: if (($type eq 'any') || ($type eq 'all')) {
2937: $typesref = ['active','previous','future'];
2938: } elsif ($type eq 'previous' || $type eq 'future') {
2939: $typesref = [$type];
2940: }
2941: my %roles = &get_my_roles($uname,$udom,'userroles',
2942: $typesref,undef,[$cdom]);
2943: my ($tmp) = keys(%roles);
2944: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2945: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2946: if (@course_roles > 0) {
2947: return 1;
2948: }
2949: return 0;
2950: }
2951:
2952: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2953: # input: action, courseID, current domain, intended
2954: # path to file, source of file, instruction to parse file for objects,
2955: # ref to hash for embedded objects,
2956: # ref to hash for codebase of java objects.
2957: # reference to scalar to accommodate mime type determined
2958: # from File::MMagic if $parser = parse.
2959: #
2960: # output: url to file (if action was uploaddoc),
2961: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2962: #
2963: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2964: # course.
2965: #
2966: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2967: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2968: # course's home server.
2969: #
2970: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2971: # be copied from $source (current location) to
2972: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2973: # and will then be copied to
2974: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2975: # course's home server.
2976: #
2977: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2978: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2979: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2980: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2981: # in course's home server.
2982: #
2983:
2984: sub process_coursefile {
2985: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2986: $mimetype)=@_;
2987: my $fetchresult;
2988: my $home=&homeserver($docuname,$docudom);
2989: if ($action eq 'propagate') {
2990: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2991: $home);
2992: } else {
2993: my $fpath = '';
2994: my $fname = $file;
2995: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2996: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2997: my $filepath = &build_filepath($fpath);
2998: if ($action eq 'copy') {
2999: if ($source eq '') {
3000: $fetchresult = 'no source file';
3001: return $fetchresult;
3002: } else {
3003: my $destination = $filepath.'/'.$fname;
3004: rename($source,$destination);
3005: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3006: $home);
3007: }
3008: } elsif ($action eq 'uploaddoc') {
3009: open(my $fh,'>'.$filepath.'/'.$fname);
3010: print $fh $env{'form.'.$source};
3011: close($fh);
3012: if ($parser eq 'parse') {
3013: my $mm = new File::MMagic;
3014: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3015: if ($type eq 'text/html') {
3016: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3017: unless ($parse_result eq 'ok') {
3018: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3019: }
3020: }
3021: if (ref($mimetype)) {
3022: $$mimetype = $type;
3023: }
3024: }
3025: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3026: $home);
3027: if ($fetchresult eq 'ok') {
3028: return '/uploaded/'.$fpath.'/'.$fname;
3029: } else {
3030: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3031: ' to host '.$home.': '.$fetchresult);
3032: return '/adm/notfound.html';
3033: }
3034: }
3035: }
3036: unless ( $fetchresult eq 'ok') {
3037: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3038: ' to host '.$home.': '.$fetchresult);
3039: }
3040: return $fetchresult;
3041: }
3042:
3043: sub build_filepath {
3044: my ($fpath) = @_;
3045: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3046: unless ($fpath eq '') {
3047: my @parts=split('/',$fpath);
3048: foreach my $part (@parts) {
3049: $filepath.= '/'.$part;
3050: if ((-e $filepath)!=1) {
3051: mkdir($filepath,0777);
3052: }
3053: }
3054: }
3055: return $filepath;
3056: }
3057:
3058: sub store_edited_file {
3059: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3060: my $file = $primary_url;
3061: $file =~ s#^/uploaded/$docudom/$docuname/##;
3062: my $fpath = '';
3063: my $fname = $file;
3064: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3065: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3066: my $filepath = &build_filepath($fpath);
3067: open(my $fh,'>'.$filepath.'/'.$fname);
3068: print $fh $content;
3069: close($fh);
3070: my $home=&homeserver($docuname,$docudom);
3071: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3072: $home);
3073: if ($$fetchresult eq 'ok') {
3074: return '/uploaded/'.$fpath.'/'.$fname;
3075: } else {
3076: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3077: ' to host '.$home.': '.$$fetchresult);
3078: return '/adm/notfound.html';
3079: }
3080: }
3081:
3082: sub clean_filename {
3083: my ($fname,$args)=@_;
3084: # Replace Windows backslashes by forward slashes
3085: $fname=~s/\\/\//g;
3086: if (!$args->{'keep_path'}) {
3087: # Get rid of everything but the actual filename
3088: $fname=~s/^.*\/([^\/]+)$/$1/;
3089: }
3090: # Replace spaces by underscores
3091: $fname=~s/\s+/\_/g;
3092: # Replace all other weird characters by nothing
3093: $fname=~s{[^/\w\.\-]}{}g;
3094: # Replace all .\d. sequences with _\d. so they no longer look like version
3095: # numbers
3096: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3097: return $fname;
3098: }
3099: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3100: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3101: # image with the same aspect ratio as the original, but with dimensions which do
3102: # not exceed $resizewidth and $resizeheight.
3103:
3104: sub resizeImage {
3105: my ($img_path,$resizewidth,$resizeheight) = @_;
3106: my $ima = Image::Magick->new;
3107: my $resized;
3108: if (-e $img_path) {
3109: $ima->Read($img_path);
3110: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3111: my $width = $ima->Get('width');
3112: my $height = $ima->Get('height');
3113: if ($width > $resizewidth) {
3114: my $factor = $width/$resizewidth;
3115: my $newheight = $height/$factor;
3116: $ima->Scale(width=>$resizewidth,height=>$newheight);
3117: $resized = 1;
3118: }
3119: }
3120: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3121: my $width = $ima->Get('width');
3122: my $height = $ima->Get('height');
3123: if ($height > $resizeheight) {
3124: my $factor = $height/$resizeheight;
3125: my $newwidth = $width/$factor;
3126: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3127: $resized = 1;
3128: }
3129: }
3130: if ($resized) {
3131: $ima->Write($img_path);
3132: }
3133: }
3134: return;
3135: }
3136:
3137: # --------------- Take an uploaded file and put it into the userfiles directory
3138: # input: $formname - the contents of the file are in $env{"form.$formname"}
3139: # the desired filename is in $env{"form.$formname.filename"}
3140: # $context - possible values: coursedoc, existingfile, overwrite,
3141: # canceloverwrite, or ''.
3142: # if 'coursedoc': upload to the current course
3143: # if 'existingfile': write file to tmp/overwrites directory
3144: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3145: # $context is passed as argument to &finishuserfileupload
3146: # $subdir - directory in userfile to store the file into
3147: # $parser - instruction to parse file for objects ($parser = parse)
3148: # $allfiles - reference to hash for embedded objects
3149: # $codebase - reference to hash for codebase of java objects
3150: # $desuname - username for permanent storage of uploaded file
3151: # $dsetudom - domain for permanaent storage of uploaded file
3152: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3153: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3154: # $resizewidth - width (pixels) to which to resize uploaded image
3155: # $resizeheight - height (pixels) to which to resize uploaded image
3156: # $mimetype - reference to scalar to accommodate mime type determined
3157: # from File::MMagic.
3158: #
3159: # output: url of file in userspace, or error: <message>
3160: # or /adm/notfound.html if failure to upload occurse
3161:
3162: sub userfileupload {
3163: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3164: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3165: if (!defined($subdir)) { $subdir='unknown'; }
3166: my $fname=$env{'form.'.$formname.'.filename'};
3167: $fname=&clean_filename($fname);
3168: # See if there is anything left
3169: unless ($fname) { return 'error: no uploaded file'; }
3170: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3171: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3172: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3173: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3174: my $now = time;
3175: my $filepath;
3176: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3177: $filepath = 'tmp/helprequests/'.$now;
3178: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3179: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3180: '_'.$env{'user.domain'}.'/pending';
3181: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3182: my ($docuname,$docudom);
3183: if ($destudom) {
3184: $docudom = $destudom;
3185: } else {
3186: $docudom = $env{'user.domain'};
3187: }
3188: if ($destuname) {
3189: $docuname = $destuname;
3190: } else {
3191: $docuname = $env{'user.name'};
3192: }
3193: if (exists($env{'form.group'})) {
3194: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3195: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3196: }
3197: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3198: if ($context eq 'canceloverwrite') {
3199: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3200: if (-e $tempfile) {
3201: my @info = stat($tempfile);
3202: if ($info[9] eq $env{'form.timestamp'}) {
3203: unlink($tempfile);
3204: }
3205: }
3206: return;
3207: }
3208: }
3209: # Create the directory if not present
3210: my @parts=split(/\//,$filepath);
3211: my $fullpath = $perlvar{'lonDaemons'};
3212: for (my $i=0;$i<@parts;$i++) {
3213: $fullpath .= '/'.$parts[$i];
3214: if ((-e $fullpath)!=1) {
3215: mkdir($fullpath,0777);
3216: }
3217: }
3218: open(my $fh,'>'.$fullpath.'/'.$fname);
3219: print $fh $env{'form.'.$formname};
3220: close($fh);
3221: if ($context eq 'existingfile') {
3222: my @info = stat($fullpath.'/'.$fname);
3223: return ($fullpath.'/'.$fname,$info[9]);
3224: } else {
3225: return $fullpath.'/'.$fname;
3226: }
3227: }
3228: if ($subdir eq 'scantron') {
3229: $fname = 'scantron_orig_'.$fname;
3230: } else {
3231: $fname="$subdir/$fname";
3232: }
3233: if ($context eq 'coursedoc') {
3234: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3235: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3236: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3237: return &finishuserfileupload($docuname,$docudom,
3238: $formname,$fname,$parser,$allfiles,
3239: $codebase,$thumbwidth,$thumbheight,
3240: $resizewidth,$resizeheight,$context,$mimetype);
3241: } else {
3242: if ($env{'form.folder'}) {
3243: $fname=$env{'form.folder'}.'/'.$fname;
3244: }
3245: return &process_coursefile('uploaddoc',$docuname,$docudom,
3246: $fname,$formname,$parser,
3247: $allfiles,$codebase,$mimetype);
3248: }
3249: } elsif (defined($destuname)) {
3250: my $docuname=$destuname;
3251: my $docudom=$destudom;
3252: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3253: $parser,$allfiles,$codebase,
3254: $thumbwidth,$thumbheight,
3255: $resizewidth,$resizeheight,$context,$mimetype);
3256: } else {
3257: my $docuname=$env{'user.name'};
3258: my $docudom=$env{'user.domain'};
3259: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3260: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3261: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3262: }
3263: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3264: $parser,$allfiles,$codebase,
3265: $thumbwidth,$thumbheight,
3266: $resizewidth,$resizeheight,$context,$mimetype);
3267: }
3268: }
3269:
3270: sub finishuserfileupload {
3271: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3272: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3273: my $path=$docudom.'/'.$docuname.'/';
3274: my $filepath=$perlvar{'lonDocRoot'};
3275:
3276: my ($fnamepath,$file,$fetchthumb);
3277: $file=$fname;
3278: if ($fname=~m|/|) {
3279: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3280: $path.=$fnamepath.'/';
3281: }
3282: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3283: my $count;
3284: for ($count=4;$count<=$#parts;$count++) {
3285: $filepath.="/$parts[$count]";
3286: if ((-e $filepath)!=1) {
3287: mkdir($filepath,0777);
3288: }
3289: }
3290:
3291: # Save the file
3292: {
3293: if (!open(FH,'>'.$filepath.'/'.$file)) {
3294: &logthis('Failed to create '.$filepath.'/'.$file);
3295: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3296: return '/adm/notfound.html';
3297: }
3298: if ($context eq 'overwrite') {
3299: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3300: my $target = $filepath.'/'.$file;
3301: if (-e $source) {
3302: my @info = stat($source);
3303: if ($info[9] eq $env{'form.timestamp'}) {
3304: unless (&File::Copy::move($source,$target)) {
3305: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3306: return "Moving from $source failed";
3307: }
3308: } else {
3309: return "Temporary file: $source had unexpected date/time for last modification";
3310: }
3311: } else {
3312: return "Temporary file: $source missing";
3313: }
3314: } elsif (!print FH ($env{'form.'.$formname})) {
3315: &logthis('Failed to write to '.$filepath.'/'.$file);
3316: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3317: return '/adm/notfound.html';
3318: }
3319: close(FH);
3320: if ($resizewidth && $resizeheight) {
3321: my $mm = new File::MMagic;
3322: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3323: if ($mime_type =~ m{^image/}) {
3324: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3325: }
3326: }
3327: }
3328: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3329: if (ref($mimetype)) {
3330: if ($$mimetype eq '') {
3331: my $mm = new File::MMagic;
3332: my $type = $mm->checktype_filename($filepath.'/'.$file);
3333: $$mimetype = $type;
3334: }
3335: }
3336: }
3337: if ($parser eq 'parse') {
3338: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3339: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3340: $allfiles,$codebase);
3341: unless ($parse_result eq 'ok') {
3342: &logthis('Failed to parse '.$filepath.$file.
3343: ' for embedded media: '.$parse_result);
3344: }
3345: }
3346: }
3347: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3348: my $input = $filepath.'/'.$file;
3349: my $output = $filepath.'/'.'tn-'.$file;
3350: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3351: system("convert -sample $thumbsize $input $output");
3352: if (-e $filepath.'/'.'tn-'.$file) {
3353: $fetchthumb = 1;
3354: }
3355: }
3356:
3357: # Notify homeserver to grep it
3358: #
3359: my $docuhome=&homeserver($docuname,$docudom);
3360: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3361: if ($fetchresult eq 'ok') {
3362: if ($fetchthumb) {
3363: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3364: if ($thumbresult ne 'ok') {
3365: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3366: $docuhome.': '.$thumbresult);
3367: }
3368: }
3369: #
3370: # Return the URL to it
3371: return '/uploaded/'.$path.$file;
3372: } else {
3373: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3374: ': '.$fetchresult);
3375: return '/adm/notfound.html';
3376: }
3377: }
3378:
3379: sub extract_embedded_items {
3380: my ($fullpath,$allfiles,$codebase,$content) = @_;
3381: my @state = ();
3382: my (%lastids,%related,%shockwave,%flashvars);
3383: my %javafiles = (
3384: codebase => '',
3385: code => '',
3386: archive => ''
3387: );
3388: my %mediafiles = (
3389: src => '',
3390: movie => '',
3391: );
3392: my $p;
3393: if ($content) {
3394: $p = HTML::LCParser->new($content);
3395: } else {
3396: $p = HTML::LCParser->new($fullpath);
3397: }
3398: while (my $t=$p->get_token()) {
3399: if ($t->[0] eq 'S') {
3400: my ($tagname, $attr) = ($t->[1],$t->[2]);
3401: push(@state, $tagname);
3402: if (lc($tagname) eq 'allow') {
3403: &add_filetype($allfiles,$attr->{'src'},'src');
3404: }
3405: if (lc($tagname) eq 'img') {
3406: &add_filetype($allfiles,$attr->{'src'},'src');
3407: }
3408: if (lc($tagname) eq 'a') {
3409: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3410: &add_filetype($allfiles,$attr->{'href'},'href');
3411: }
3412: }
3413: if (lc($tagname) eq 'script') {
3414: my $src;
3415: if ($attr->{'archive'} =~ /\.jar$/i) {
3416: &add_filetype($allfiles,$attr->{'archive'},'archive');
3417: } else {
3418: if ($attr->{'src'} ne '') {
3419: $src = $attr->{'src'};
3420: &add_filetype($allfiles,$src,'src');
3421: }
3422: }
3423: my $text = $p->get_trimmed_text();
3424: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3425: my @swfargs = split(/,/,$1);
3426: foreach my $item (@swfargs) {
3427: $item =~ s/["']//g;
3428: $item =~ s/^\s+//;
3429: $item =~ s/\s+$//;
3430: }
3431: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3432: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3433: push(@{$related{$swfargs[0]}},$swfargs[2]);
3434: } else {
3435: $related{$swfargs[0]} = [$swfargs[2]];
3436: }
3437: }
3438: }
3439: }
3440: if (lc($tagname) eq 'link') {
3441: if (lc($attr->{'rel'}) eq 'stylesheet') {
3442: &add_filetype($allfiles,$attr->{'href'},'href');
3443: }
3444: }
3445: if (lc($tagname) eq 'object' ||
3446: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3447: foreach my $item (keys(%javafiles)) {
3448: $javafiles{$item} = '';
3449: }
3450: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3451: $lastids{lc($tagname)} = $attr->{'id'};
3452: }
3453: }
3454: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3455: my $name = lc($attr->{'name'});
3456: foreach my $item (keys(%javafiles)) {
3457: if ($name eq $item) {
3458: $javafiles{$item} = $attr->{'value'};
3459: last;
3460: }
3461: }
3462: my $pathfrom;
3463: foreach my $item (keys(%mediafiles)) {
3464: if ($name eq $item) {
3465: $pathfrom = $attr->{'value'};
3466: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3467: &add_filetype($allfiles,$pathfrom,$name);
3468: last;
3469: }
3470: }
3471: if ($name eq 'flashvars') {
3472: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3473: }
3474: if ($pathfrom ne '') {
3475: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3476: $pathfrom);
3477: }
3478: }
3479: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3480: foreach my $item (keys(%javafiles)) {
3481: if ($attr->{$item}) {
3482: $javafiles{$item} = $attr->{$item};
3483: last;
3484: }
3485: }
3486: foreach my $item (keys(%mediafiles)) {
3487: if ($attr->{$item}) {
3488: &add_filetype($allfiles,$attr->{$item},$item);
3489: last;
3490: }
3491: }
3492: if (lc($tagname) eq 'embed') {
3493: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3494: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3495: $attr->{'src'});
3496: }
3497: }
3498: }
3499: if ($t->[4] =~ m{/>$}) {
3500: pop(@state);
3501: }
3502: } elsif ($t->[0] eq 'E') {
3503: my ($tagname) = ($t->[1]);
3504: if ($javafiles{'codebase'} ne '') {
3505: $javafiles{'codebase'} .= '/';
3506: }
3507: if (lc($tagname) eq 'applet' ||
3508: lc($tagname) eq 'object' ||
3509: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3510: ) {
3511: foreach my $item (keys(%javafiles)) {
3512: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3513: my $file=$javafiles{'codebase'}.$javafiles{$item};
3514: &add_filetype($allfiles,$file,$item);
3515: }
3516: }
3517: }
3518: pop @state;
3519: }
3520: }
3521: foreach my $id (sort(keys(%flashvars))) {
3522: if ($shockwave{$id} ne '') {
3523: my @pairs = split(/\&/,$flashvars{$id});
3524: foreach my $pair (@pairs) {
3525: my ($key,$value) = split(/\=/,$pair);
3526: if ($key eq 'thumb') {
3527: &add_filetype($allfiles,$value,$key);
3528: } elsif ($key eq 'content') {
3529: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3530: my ($ext) = ($value =~ /\.([^.]+)$/);
3531: if ($ext ne '') {
3532: &add_filetype($allfiles,$path.$value,$ext);
3533: }
3534: }
3535: }
3536: }
3537: }
3538: return 'ok';
3539: }
3540:
3541: sub add_filetype {
3542: my ($allfiles,$file,$type)=@_;
3543: if (exists($allfiles->{$file})) {
3544: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3545: push(@{$allfiles->{$file}}, &escape($type));
3546: }
3547: } else {
3548: @{$allfiles->{$file}} = (&escape($type));
3549: }
3550: }
3551:
3552: sub embedded_dependency {
3553: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3554: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3555: if (($identifier ne '') &&
3556: (ref($related->{$identifier}) eq 'ARRAY') &&
3557: ($pathfrom ne '')) {
3558: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3559: foreach my $dep (@{$related->{$identifier}}) {
3560: &add_filetype($allfiles,$path.$dep,'object');
3561: }
3562: }
3563: }
3564: return;
3565: }
3566:
3567: sub removeuploadedurl {
3568: my ($url)=@_;
3569: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3570: return &removeuserfile($uname,$udom,$fname);
3571: }
3572:
3573: sub removeuserfile {
3574: my ($docuname,$docudom,$fname)=@_;
3575: my $home=&homeserver($docuname,$docudom);
3576: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3577: if ($result eq 'ok') {
3578: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3579: my $metafile = $fname.'.meta';
3580: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3581: my $url = "/uploaded/$docudom/$docuname/$fname";
3582: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3583: my $sqlresult =
3584: &update_portfolio_table($docuname,$docudom,$file,
3585: 'portfolio_metadata',$group,
3586: 'delete');
3587: }
3588: }
3589: return $result;
3590: }
3591:
3592: sub mkdiruserfile {
3593: my ($docuname,$docudom,$dir)=@_;
3594: my $home=&homeserver($docuname,$docudom);
3595: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3596: }
3597:
3598: sub renameuserfile {
3599: my ($docuname,$docudom,$old,$new)=@_;
3600: my $home=&homeserver($docuname,$docudom);
3601: my $result = &reply("renameuserfile:$docudom:$docuname:".
3602: &escape("$old").':'.&escape("$new"),$home);
3603: if ($result eq 'ok') {
3604: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3605: my $oldmeta = $old.'.meta';
3606: my $newmeta = $new.'.meta';
3607: my $metaresult =
3608: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3609: my $url = "/uploaded/$docudom/$docuname/$old";
3610: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3611: my $sqlresult =
3612: &update_portfolio_table($docuname,$docudom,$file,
3613: 'portfolio_metadata',$group,
3614: 'delete');
3615: }
3616: }
3617: return $result;
3618: }
3619:
3620: # ------------------------------------------------------------------------- Log
3621:
3622: sub log {
3623: my ($dom,$nam,$hom,$what)=@_;
3624: return critical("log:$dom:$nam:$what",$hom);
3625: }
3626:
3627: # ------------------------------------------------------------------ Course Log
3628: #
3629: # This routine flushes several buffers of non-mission-critical nature
3630: #
3631:
3632: sub flushcourselogs {
3633: &logthis('Flushing log buffers');
3634: #
3635: # course logs
3636: # This is a log of all transactions in a course, which can be used
3637: # for data mining purposes
3638: #
3639: # It also collects the courseid database, which lists last transaction
3640: # times and course titles for all courseids
3641: #
3642: my %courseidbuffer=();
3643: foreach my $crsid (keys(%courselogs)) {
3644: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3645: &escape($courselogs{$crsid}),
3646: $coursehombuf{$crsid}) eq 'ok') {
3647: delete $courselogs{$crsid};
3648: } else {
3649: &logthis('Failed to flush log buffer for '.$crsid);
3650: if (length($courselogs{$crsid})>40000) {
3651: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3652: " exceeded maximum size, deleting.</font>");
3653: delete $courselogs{$crsid};
3654: }
3655: }
3656: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3657: 'description' => $coursedescrbuf{$crsid},
3658: 'inst_code' => $courseinstcodebuf{$crsid},
3659: 'type' => $coursetypebuf{$crsid},
3660: 'owner' => $courseownerbuf{$crsid},
3661: };
3662: }
3663: #
3664: # Write course id database (reverse lookup) to homeserver of courses
3665: # Is used in pickcourse
3666: #
3667: foreach my $crs_home (keys(%courseidbuffer)) {
3668: my $response = &courseidput(&host_domain($crs_home),
3669: $courseidbuffer{$crs_home},
3670: $crs_home,'timeonly');
3671: }
3672: #
3673: # File accesses
3674: # Writes to the dynamic metadata of resources to get hit counts, etc.
3675: #
3676: foreach my $entry (keys(%accesshash)) {
3677: if ($entry =~ /___count$/) {
3678: my ($dom,$name);
3679: ($dom,$name,undef)=
3680: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3681: if (! defined($dom) || $dom eq '' ||
3682: ! defined($name) || $name eq '') {
3683: my $cid = $env{'request.course.id'};
3684: $dom = $env{'request.'.$cid.'.domain'};
3685: $name = $env{'request.'.$cid.'.num'};
3686: }
3687: my $value = $accesshash{$entry};
3688: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3689: my %temphash=($url => $value);
3690: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3691: if ($result eq 'ok') {
3692: delete $accesshash{$entry};
3693: }
3694: } else {
3695: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3696: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3697: my %temphash=($entry => $accesshash{$entry});
3698: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3699: delete $accesshash{$entry};
3700: }
3701: }
3702: }
3703: #
3704: # Roles
3705: # Reverse lookup of user roles for course faculty/staff and co-authorship
3706: #
3707: foreach my $entry (keys(%userrolehash)) {
3708: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3709: split(/\:/,$entry);
3710: if (&Apache::lonnet::put('nohist_userroles',
3711: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3712: $rudom,$runame) eq 'ok') {
3713: delete $userrolehash{$entry};
3714: }
3715: }
3716: #
3717: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3718: #
3719: my %domrolebuffer = ();
3720: foreach my $entry (keys(%domainrolehash)) {
3721: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3722: if ($domrolebuffer{$rudom}) {
3723: $domrolebuffer{$rudom}.='&'.&escape($entry).
3724: '='.&escape($domainrolehash{$entry});
3725: } else {
3726: $domrolebuffer{$rudom}.=&escape($entry).
3727: '='.&escape($domainrolehash{$entry});
3728: }
3729: delete $domainrolehash{$entry};
3730: }
3731: foreach my $dom (keys(%domrolebuffer)) {
3732: my %servers = &get_servers($dom,'library');
3733: foreach my $tryserver (keys(%servers)) {
3734: unless (&reply('domroleput:'.$dom.':'.
3735: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3736: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3737: }
3738: }
3739: }
3740: $dumpcount++;
3741: }
3742:
3743: sub courselog {
3744: my $what=shift;
3745: $what=time.':'.$what;
3746: unless ($env{'request.course.id'}) { return ''; }
3747: $coursedombuf{$env{'request.course.id'}}=
3748: $env{'course.'.$env{'request.course.id'}.'.domain'};
3749: $coursenumbuf{$env{'request.course.id'}}=
3750: $env{'course.'.$env{'request.course.id'}.'.num'};
3751: $coursehombuf{$env{'request.course.id'}}=
3752: $env{'course.'.$env{'request.course.id'}.'.home'};
3753: $coursedescrbuf{$env{'request.course.id'}}=
3754: $env{'course.'.$env{'request.course.id'}.'.description'};
3755: $courseinstcodebuf{$env{'request.course.id'}}=
3756: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3757: $courseownerbuf{$env{'request.course.id'}}=
3758: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3759: $coursetypebuf{$env{'request.course.id'}}=
3760: $env{'course.'.$env{'request.course.id'}.'.type'};
3761: if (defined $courselogs{$env{'request.course.id'}}) {
3762: $courselogs{$env{'request.course.id'}}.='&'.$what;
3763: } else {
3764: $courselogs{$env{'request.course.id'}}.=$what;
3765: }
3766: if (length($courselogs{$env{'request.course.id'}})>4048) {
3767: &flushcourselogs();
3768: }
3769: }
3770:
3771: sub courseacclog {
3772: my $fnsymb=shift;
3773: unless ($env{'request.course.id'}) { return ''; }
3774: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3775: if ($fnsymb=~/$LONCAPA::assess_re/) {
3776: $what.=':POST';
3777: # FIXME: Probably ought to escape things....
3778: foreach my $key (keys(%env)) {
3779: if ($key=~/^form\.(.*)/) {
3780: my $formitem = $1;
3781: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3782: $what.=':'.$formitem.'='.$env{$key};
3783: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3784: $what.=':'.$formitem.'='.$env{$key};
3785: }
3786: }
3787: }
3788: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3789: # FIXME: We should not be depending on a form parameter that someone
3790: # editing lonsearchcat.pm might change in the future.
3791: if ($env{'form.phase'} eq 'course_search') {
3792: $what.= ':POST';
3793: # FIXME: Probably ought to escape things....
3794: foreach my $element ('courseexp','crsfulltext','crsrelated',
3795: 'crsdiscuss') {
3796: $what.=':'.$element.'='.$env{'form.'.$element};
3797: }
3798: }
3799: }
3800: &courselog($what);
3801: }
3802:
3803: sub countacc {
3804: my $url=&declutter(shift);
3805: return if (! defined($url) || $url eq '');
3806: unless ($env{'request.course.id'}) { return ''; }
3807: #
3808: # Mark that this url was used in this course
3809: #
3810: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3811: #
3812: # Increase the access count for this resource in this child process
3813: #
3814: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3815: $accesshash{$key}++;
3816: }
3817:
3818: sub linklog {
3819: my ($from,$to)=@_;
3820: $from=&declutter($from);
3821: $to=&declutter($to);
3822: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3823: $accesshash{$to.'___'.$from.'___goto'}=1;
3824: }
3825:
3826: sub statslog {
3827: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3828: if ($users<2) { return; }
3829: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3830: 'course' => $env{'request.course.id'},
3831: 'sections' => '"all"',
3832: 'num_students' => $users,
3833: 'part' => $part,
3834: 'symb' => $symb,
3835: 'mean_tries' => $av_attempts,
3836: 'deg_of_diff' => $degdiff});
3837: foreach my $key (keys(%dynstore)) {
3838: $accesshash{$key}=$dynstore{$key};
3839: }
3840: }
3841:
3842: sub userrolelog {
3843: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3844: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3845: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3846: $userrolehash
3847: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3848: =$tend.':'.$tstart;
3849: }
3850: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3851: $userrolehash
3852: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3853: =$tend.':'.$tstart;
3854: }
3855: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3856: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3857: $domainrolehash
3858: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3859: = $tend.':'.$tstart;
3860: }
3861: }
3862:
3863: sub courserolelog {
3864: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3865: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3866: my $cdom = $1;
3867: my $cnum = $2;
3868: my $sec = $3;
3869: my $namespace = 'rolelog';
3870: my %storehash = (
3871: role => $trole,
3872: start => $tstart,
3873: end => $tend,
3874: selfenroll => $selfenroll,
3875: context => $context,
3876: );
3877: if ($trole eq 'gr') {
3878: $namespace = 'groupslog';
3879: $storehash{'group'} = $sec;
3880: } else {
3881: $storehash{'section'} = $sec;
3882: }
3883: &write_log('course',$namespace,\%storehash,$delflag,$username,
3884: $domain,$cnum,$cdom);
3885: if (($trole ne 'st') || ($sec ne '')) {
3886: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3887: }
3888: }
3889: return;
3890: }
3891:
3892: sub domainrolelog {
3893: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3894: if ($area =~ m{^/($match_domain)/$}) {
3895: my $cdom = $1;
3896: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3897: my $namespace = 'rolelog';
3898: my %storehash = (
3899: role => $trole,
3900: start => $tstart,
3901: end => $tend,
3902: context => $context,
3903: );
3904: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3905: $domain,$domconfiguser,$cdom);
3906: }
3907: return;
3908:
3909: }
3910:
3911: sub coauthorrolelog {
3912: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3913: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3914: my $audom = $1;
3915: my $auname = $2;
3916: my $namespace = 'rolelog';
3917: my %storehash = (
3918: role => $trole,
3919: start => $tstart,
3920: end => $tend,
3921: context => $context,
3922: );
3923: &write_log('author',$namespace,\%storehash,$delflag,$username,
3924: $domain,$auname,$audom);
3925: }
3926: return;
3927: }
3928:
3929: sub get_course_adv_roles {
3930: my ($cid,$codes) = @_;
3931: $cid=$env{'request.course.id'} unless (defined($cid));
3932: my %coursehash=&coursedescription($cid);
3933: my $crstype = &Apache::loncommon::course_type($cid);
3934: my %nothide=();
3935: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3936: if ($user !~ /:/) {
3937: $nothide{join(':',split(/[\@]/,$user))}=1;
3938: } else {
3939: $nothide{$user}=1;
3940: }
3941: }
3942: my @possdoms = ($coursehash{'domain'});
3943: if ($coursehash{'checkforpriv'}) {
3944: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3945: }
3946: my %returnhash=();
3947: my %dumphash=
3948: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3949: my $now=time;
3950: my %privileged;
3951: foreach my $entry (keys(%dumphash)) {
3952: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3953: if (($tstart) && ($tstart<0)) { next; }
3954: if (($tend) && ($tend<$now)) { next; }
3955: if (($tstart) && ($now<$tstart)) { next; }
3956: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3957: if ($username eq '' || $domain eq '') { next; }
3958: if ((&privileged($username,$domain,\@possdoms)) &&
3959: (!$nothide{$username.':'.$domain})) { next; }
3960: if ($role eq 'cr') { next; }
3961: if ($codes) {
3962: if ($section) { $role .= ':'.$section; }
3963: if ($returnhash{$role}) {
3964: $returnhash{$role}.=','.$username.':'.$domain;
3965: } else {
3966: $returnhash{$role}=$username.':'.$domain;
3967: }
3968: } else {
3969: my $key=&plaintext($role,$crstype);
3970: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3971: if ($returnhash{$key}) {
3972: $returnhash{$key}.=','.$username.':'.$domain;
3973: } else {
3974: $returnhash{$key}=$username.':'.$domain;
3975: }
3976: }
3977: }
3978: return %returnhash;
3979: }
3980:
3981: sub get_my_roles {
3982: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3983: unless (defined($uname)) { $uname=$env{'user.name'}; }
3984: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3985: my (%dumphash,%nothide);
3986: if ($context eq 'userroles') {
3987: %dumphash = &dump('roles',$udom,$uname);
3988: } else {
3989: %dumphash = &dump('nohist_userroles',$udom,$uname);
3990: if ($hidepriv) {
3991: my %coursehash=&coursedescription($udom.'_'.$uname);
3992: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3993: if ($user !~ /:/) {
3994: $nothide{join(':',split(/[\@]/,$user))} = 1;
3995: } else {
3996: $nothide{$user} = 1;
3997: }
3998: }
3999: }
4000: }
4001: my %returnhash=();
4002: my $now=time;
4003: my %privileged;
4004: foreach my $entry (keys(%dumphash)) {
4005: my ($role,$tend,$tstart);
4006: if ($context eq 'userroles') {
4007: next if ($entry =~ /^rolesdef/);
4008: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4009: } else {
4010: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4011: }
4012: if (($tstart) && ($tstart<0)) { next; }
4013: my $status = 'active';
4014: if (($tend) && ($tend<=$now)) {
4015: $status = 'previous';
4016: }
4017: if (($tstart) && ($now<$tstart)) {
4018: $status = 'future';
4019: }
4020: if (ref($types) eq 'ARRAY') {
4021: if (!grep(/^\Q$status\E$/,@{$types})) {
4022: next;
4023: }
4024: } else {
4025: if ($status ne 'active') {
4026: next;
4027: }
4028: }
4029: my ($rolecode,$username,$domain,$section,$area);
4030: if ($context eq 'userroles') {
4031: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4032: (undef,$domain,$username,$section) = split(/\//,$area);
4033: } else {
4034: ($role,$username,$domain,$section) = split(/\:/,$entry);
4035: }
4036: if (ref($roledoms) eq 'ARRAY') {
4037: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4038: next;
4039: }
4040: }
4041: if (ref($roles) eq 'ARRAY') {
4042: if (!grep(/^\Q$role\E$/,@{$roles})) {
4043: if ($role =~ /^cr\//) {
4044: if (!grep(/^cr$/,@{$roles})) {
4045: next;
4046: }
4047: } elsif ($role =~ /^gr\//) {
4048: if (!grep(/^gr$/,@{$roles})) {
4049: next;
4050: }
4051: } else {
4052: next;
4053: }
4054: }
4055: }
4056: if ($hidepriv) {
4057: my @privroles = ('dc','su');
4058: if ($context eq 'userroles') {
4059: next if (grep(/^\Q$role\E$/,@privroles));
4060: } else {
4061: my $possdoms = [$domain];
4062: if (ref($roledoms) eq 'ARRAY') {
4063: push(@{$possdoms},@{$roledoms});
4064: }
4065: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4066: if (!$nothide{$username.':'.$domain}) {
4067: next;
4068: }
4069: }
4070: }
4071: }
4072: if ($withsec) {
4073: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4074: $tstart.':'.$tend;
4075: } else {
4076: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4077: }
4078: }
4079: return %returnhash;
4080: }
4081:
4082: # ----------------------------------------------------- Frontpage Announcements
4083: #
4084: #
4085:
4086: sub postannounce {
4087: my ($server,$text)=@_;
4088: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4089: unless ($text=~/\w/) { $text=''; }
4090: return &reply('setannounce:'.&escape($text),$server);
4091: }
4092:
4093: sub getannounce {
4094:
4095: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4096: my $announcement='';
4097: while (my $line = <$fh>) { $announcement .= $line; }
4098: close($fh);
4099: if ($announcement=~/\w/) {
4100: return
4101: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4102: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4103: } else {
4104: return '';
4105: }
4106: } else {
4107: return '';
4108: }
4109: }
4110:
4111: # ---------------------------------------------------------- Course ID routines
4112: # Deal with domain's nohist_courseid.db files
4113: #
4114:
4115: sub courseidput {
4116: my ($domain,$storehash,$coursehome,$caller) = @_;
4117: return unless (ref($storehash) eq 'HASH');
4118: my $outcome;
4119: if ($caller eq 'timeonly') {
4120: my $cids = '';
4121: foreach my $item (keys(%$storehash)) {
4122: $cids.=&escape($item).'&';
4123: }
4124: $cids=~s/\&$//;
4125: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4126: $coursehome);
4127: } else {
4128: my $items = '';
4129: foreach my $item (keys(%$storehash)) {
4130: $items.= &escape($item).'='.
4131: &freeze_escape($$storehash{$item}).'&';
4132: }
4133: $items=~s/\&$//;
4134: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4135: $coursehome);
4136: }
4137: if ($outcome eq 'unknown_cmd') {
4138: my $what;
4139: foreach my $cid (keys(%$storehash)) {
4140: $what .= &escape($cid).'=';
4141: foreach my $item ('description','inst_code','owner','type') {
4142: $what .= &escape($storehash->{$cid}{$item}).':';
4143: }
4144: $what =~ s/\:$/&/;
4145: }
4146: $what =~ s/\&$//;
4147: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4148: } else {
4149: return $outcome;
4150: }
4151: }
4152:
4153: sub courseiddump {
4154: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4155: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4156: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4157: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4158: my $as_hash = 1;
4159: my %returnhash;
4160: if (!$domfilter) { $domfilter=''; }
4161: my %libserv = &all_library();
4162: foreach my $tryserver (keys(%libserv)) {
4163: if ( ( $hostidflag == 1
4164: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4165: || (!defined($hostidflag)) ) {
4166:
4167: if (($domfilter eq '') ||
4168: (&host_domain($tryserver) eq $domfilter)) {
4169: my $rep;
4170: if (grep { $_ eq $tryserver } current_machine_ids()) {
4171: $rep = LONCAPA::Lond::dump_course_id_handler(
4172: join(":", (&host_domain($tryserver), $sincefilter,
4173: &escape($descfilter), &escape($instcodefilter),
4174: &escape($ownerfilter), &escape($coursefilter),
4175: &escape($typefilter), &escape($regexp_ok),
4176: $as_hash, &escape($selfenrollonly),
4177: &escape($catfilter), $showhidden, $caller,
4178: &escape($cloner), &escape($cc_clone), $cloneonly,
4179: &escape($createdbefore), &escape($createdafter),
4180: &escape($creationcontext), $domcloner)));
4181: } else {
4182: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4183: $sincefilter.':'.&escape($descfilter).':'.
4184: &escape($instcodefilter).':'.&escape($ownerfilter).
4185: ':'.&escape($coursefilter).':'.&escape($typefilter).
4186: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4187: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4188: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4189: &escape($cc_clone).':'.$cloneonly.':'.
4190: &escape($createdbefore).':'.&escape($createdafter).':'.
4191: &escape($creationcontext).':'.$domcloner,
4192: $tryserver);
4193: }
4194:
4195: my @pairs=split(/\&/,$rep);
4196: foreach my $item (@pairs) {
4197: my ($key,$value)=split(/\=/,$item,2);
4198: $key = &unescape($key);
4199: next if ($key =~ /^error: 2 /);
4200: my $result = &thaw_unescape($value);
4201: if (ref($result) eq 'HASH') {
4202: $returnhash{$key}=$result;
4203: } else {
4204: my @responses = split(/:/,$value);
4205: my @items = ('description','inst_code','owner','type');
4206: for (my $i=0; $i<@responses; $i++) {
4207: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4208: }
4209: }
4210: }
4211: }
4212: }
4213: }
4214: return %returnhash;
4215: }
4216:
4217: sub courselastaccess {
4218: my ($cdom,$cnum,$hostidref) = @_;
4219: my %returnhash;
4220: if ($cdom && $cnum) {
4221: my $chome = &homeserver($cnum,$cdom);
4222: if ($chome ne 'no_host') {
4223: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4224: &extract_lastaccess(\%returnhash,$rep);
4225: }
4226: } else {
4227: if (!$cdom) { $cdom=''; }
4228: my %libserv = &all_library();
4229: foreach my $tryserver (keys(%libserv)) {
4230: if (ref($hostidref) eq 'ARRAY') {
4231: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4232: }
4233: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4234: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4235: &extract_lastaccess(\%returnhash,$rep);
4236: }
4237: }
4238: }
4239: return %returnhash;
4240: }
4241:
4242: sub extract_lastaccess {
4243: my ($returnhash,$rep) = @_;
4244: if (ref($returnhash) eq 'HASH') {
4245: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4246: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4247: $rep eq '') {
4248: my @pairs=split(/\&/,$rep);
4249: foreach my $item (@pairs) {
4250: my ($key,$value)=split(/\=/,$item,2);
4251: $key = &unescape($key);
4252: next if ($key =~ /^error: 2 /);
4253: $returnhash->{$key} = &thaw_unescape($value);
4254: }
4255: }
4256: }
4257: return;
4258: }
4259:
4260: # ---------------------------------------------------------- DC e-mail
4261:
4262: sub dcmailput {
4263: my ($domain,$msgid,$message,$server)=@_;
4264: my $status = &Apache::lonnet::critical(
4265: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4266: &escape($message),$server);
4267: return $status;
4268: }
4269:
4270: sub dcmaildump {
4271: my ($dom,$startdate,$enddate,$senders) = @_;
4272: my %returnhash=();
4273:
4274: if (defined(&domain($dom,'primary'))) {
4275: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4276: &escape($enddate).':';
4277: my @esc_senders=map { &escape($_)} @$senders;
4278: $cmd.=&escape(join('&',@esc_senders));
4279: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4280: my ($key,$value) = split(/\=/,$line,2);
4281: if (($key) && ($value)) {
4282: $returnhash{&unescape($key)} = &unescape($value);
4283: }
4284: }
4285: }
4286: return %returnhash;
4287: }
4288: # ---------------------------------------------------------- Domain roles
4289:
4290: sub get_domain_roles {
4291: my ($dom,$roles,$startdate,$enddate)=@_;
4292: if ((!defined($startdate)) || ($startdate eq '')) {
4293: $startdate = '.';
4294: }
4295: if ((!defined($enddate)) || ($enddate eq '')) {
4296: $enddate = '.';
4297: }
4298: my $rolelist;
4299: if (ref($roles) eq 'ARRAY') {
4300: $rolelist = join('&',@{$roles});
4301: }
4302: my %personnel = ();
4303:
4304: my %servers = &get_servers($dom,'library');
4305: foreach my $tryserver (keys(%servers)) {
4306: %{$personnel{$tryserver}}=();
4307: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4308: &escape($startdate).':'.
4309: &escape($enddate).':'.
4310: &escape($rolelist), $tryserver))) {
4311: my ($key,$value) = split(/\=/,$line,2);
4312: if (($key) && ($value)) {
4313: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4314: }
4315: }
4316: }
4317: return %personnel;
4318: }
4319:
4320: # ----------------------------------------------------------- Interval timing
4321:
4322: {
4323: # Caches needed for speedup of navmaps
4324: # We don't want to cache this for very long at all (5 seconds at most)
4325: #
4326: # The user for whom we cache
4327: my $cachedkey='';
4328: # The cached times for this user
4329: my %cachedtimes=();
4330: # When this was last done
4331: my $cachedtime=();
4332:
4333: sub load_all_first_access {
4334: my ($uname,$udom)=@_;
4335: if (($cachedkey eq $uname.':'.$udom) &&
4336: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4337: return;
4338: }
4339: $cachedtime=time;
4340: $cachedkey=$uname.':'.$udom;
4341: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4342: }
4343:
4344: sub get_first_access {
4345: my ($type,$argsymb,$argmap)=@_;
4346: my ($symb,$courseid,$udom,$uname)=&whichuser();
4347: if ($argsymb) { $symb=$argsymb; }
4348: my ($map,$id,$res)=&decode_symb($symb);
4349: if ($argmap) { $map = $argmap; }
4350: if ($type eq 'course') {
4351: $res='course';
4352: } elsif ($type eq 'map') {
4353: $res=&symbread($map);
4354: } else {
4355: $res=$symb;
4356: }
4357: &load_all_first_access($uname,$udom);
4358: return $cachedtimes{"$courseid\0$res"};
4359: }
4360:
4361: sub set_first_access {
4362: my ($type,$interval)=@_;
4363: my ($symb,$courseid,$udom,$uname)=&whichuser();
4364: my ($map,$id,$res)=&decode_symb($symb);
4365: if ($type eq 'course') {
4366: $res='course';
4367: } elsif ($type eq 'map') {
4368: $res=&symbread($map);
4369: } else {
4370: $res=$symb;
4371: }
4372: $cachedkey='';
4373: my $firstaccess=&get_first_access($type,$symb,$map);
4374: if (!$firstaccess) {
4375: my $start = time;
4376: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4377: $udom,$uname);
4378: if ($putres eq 'ok') {
4379: &put('timerinterval',{"$courseid\0$res"=>$interval},
4380: $udom,$uname);
4381: &appenv(
4382: {
4383: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4384: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4385: }
4386: );
4387: }
4388: return $putres;
4389: }
4390: return 'already_set';
4391: }
4392: }
4393: # --------------------------------------------- Set Expire Date for Spreadsheet
4394:
4395: sub expirespread {
4396: my ($uname,$udom,$stype,$usymb)=@_;
4397: my $cid=$env{'request.course.id'};
4398: if ($cid) {
4399: my $now=time;
4400: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4401: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4402: $env{'course.'.$cid.'.num'}.
4403: ':nohist_expirationdates:'.
4404: &escape($key).'='.$now,
4405: $env{'course.'.$cid.'.home'})
4406: }
4407: return 'ok';
4408: }
4409:
4410: # ----------------------------------------------------- Devalidate Spreadsheets
4411:
4412: sub devalidate {
4413: my ($symb,$uname,$udom)=@_;
4414: my $cid=$env{'request.course.id'};
4415: if ($cid) {
4416: # delete the stored spreadsheets for
4417: # - the student level sheet of this user in course's homespace
4418: # - the assessment level sheet for this resource
4419: # for this user in user's homespace
4420: # - current conditional state info
4421: my $key=$uname.':'.$udom.':';
4422: my $status=
4423: &del('nohist_calculatedsheets',
4424: [$key.'studentcalc:'],
4425: $env{'course.'.$cid.'.domain'},
4426: $env{'course.'.$cid.'.num'})
4427: .' '.
4428: &del('nohist_calculatedsheets_'.$cid,
4429: [$key.'assesscalc:'.$symb],$udom,$uname);
4430: unless ($status eq 'ok ok') {
4431: &logthis('Could not devalidate spreadsheet '.
4432: $uname.' at '.$udom.' for '.
4433: $symb.': '.$status);
4434: }
4435: &delenv('user.state.'.$cid);
4436: }
4437: }
4438:
4439: sub get_scalar {
4440: my ($string,$end) = @_;
4441: my $value;
4442: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4443: $value = $1;
4444: } elsif ($$string =~ s/^([^&]*?)&//) {
4445: $value = $1;
4446: }
4447: return &unescape($value);
4448: }
4449:
4450: sub array2str {
4451: my (@array) = @_;
4452: my $result=&arrayref2str(\@array);
4453: $result=~s/^__ARRAY_REF__//;
4454: $result=~s/__END_ARRAY_REF__$//;
4455: return $result;
4456: }
4457:
4458: sub arrayref2str {
4459: my ($arrayref) = @_;
4460: my $result='__ARRAY_REF__';
4461: foreach my $elem (@$arrayref) {
4462: if(ref($elem) eq 'ARRAY') {
4463: $result.=&arrayref2str($elem).'&';
4464: } elsif(ref($elem) eq 'HASH') {
4465: $result.=&hashref2str($elem).'&';
4466: } elsif(ref($elem)) {
4467: #print("Got a ref of ".(ref($elem))." skipping.");
4468: } else {
4469: $result.=&escape($elem).'&';
4470: }
4471: }
4472: $result=~s/\&$//;
4473: $result .= '__END_ARRAY_REF__';
4474: return $result;
4475: }
4476:
4477: sub hash2str {
4478: my (%hash) = @_;
4479: my $result=&hashref2str(\%hash);
4480: $result=~s/^__HASH_REF__//;
4481: $result=~s/__END_HASH_REF__$//;
4482: return $result;
4483: }
4484:
4485: sub hashref2str {
4486: my ($hashref)=@_;
4487: my $result='__HASH_REF__';
4488: foreach my $key (sort(keys(%$hashref))) {
4489: if (ref($key) eq 'ARRAY') {
4490: $result.=&arrayref2str($key).'=';
4491: } elsif (ref($key) eq 'HASH') {
4492: $result.=&hashref2str($key).'=';
4493: } elsif (ref($key)) {
4494: $result.='=';
4495: #print("Got a ref of ".(ref($key))." skipping.");
4496: } else {
4497: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4498: }
4499:
4500: if(ref($hashref->{$key}) eq 'ARRAY') {
4501: $result.=&arrayref2str($hashref->{$key}).'&';
4502: } elsif(ref($hashref->{$key}) eq 'HASH') {
4503: $result.=&hashref2str($hashref->{$key}).'&';
4504: } elsif(ref($hashref->{$key})) {
4505: $result.='&';
4506: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4507: } else {
4508: $result.=&escape($hashref->{$key}).'&';
4509: }
4510: }
4511: $result=~s/\&$//;
4512: $result .= '__END_HASH_REF__';
4513: return $result;
4514: }
4515:
4516: sub str2hash {
4517: my ($string)=@_;
4518: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4519: return %$hash;
4520: }
4521:
4522: sub str2hashref {
4523: my ($string) = @_;
4524:
4525: my %hash;
4526:
4527: if($string !~ /^__HASH_REF__/) {
4528: if (! ($string eq '' || !defined($string))) {
4529: $hash{'error'}='Not hash reference';
4530: }
4531: return (\%hash, $string);
4532: }
4533:
4534: $string =~ s/^__HASH_REF__//;
4535:
4536: while($string !~ /^__END_HASH_REF__/) {
4537: #key
4538: my $key='';
4539: if($string =~ /^__HASH_REF__/) {
4540: ($key, $string)=&str2hashref($string);
4541: if(defined($key->{'error'})) {
4542: $hash{'error'}='Bad data';
4543: return (\%hash, $string);
4544: }
4545: } elsif($string =~ /^__ARRAY_REF__/) {
4546: ($key, $string)=&str2arrayref($string);
4547: if($key->[0] eq 'Array reference error') {
4548: $hash{'error'}='Bad data';
4549: return (\%hash, $string);
4550: }
4551: } else {
4552: $string =~ s/^(.*?)=//;
4553: $key=&unescape($1);
4554: }
4555: $string =~ s/^=//;
4556:
4557: #value
4558: my $value='';
4559: if($string =~ /^__HASH_REF__/) {
4560: ($value, $string)=&str2hashref($string);
4561: if(defined($value->{'error'})) {
4562: $hash{'error'}='Bad data';
4563: return (\%hash, $string);
4564: }
4565: } elsif($string =~ /^__ARRAY_REF__/) {
4566: ($value, $string)=&str2arrayref($string);
4567: if($value->[0] eq 'Array reference error') {
4568: $hash{'error'}='Bad data';
4569: return (\%hash, $string);
4570: }
4571: } else {
4572: $value=&get_scalar(\$string,'__END_HASH_REF__');
4573: }
4574: $string =~ s/^&//;
4575:
4576: $hash{$key}=$value;
4577: }
4578:
4579: $string =~ s/^__END_HASH_REF__//;
4580:
4581: return (\%hash, $string);
4582: }
4583:
4584: sub str2array {
4585: my ($string)=@_;
4586: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4587: return @$array;
4588: }
4589:
4590: sub str2arrayref {
4591: my ($string) = @_;
4592: my @array;
4593:
4594: if($string !~ /^__ARRAY_REF__/) {
4595: if (! ($string eq '' || !defined($string))) {
4596: $array[0]='Array reference error';
4597: }
4598: return (\@array, $string);
4599: }
4600:
4601: $string =~ s/^__ARRAY_REF__//;
4602:
4603: while($string !~ /^__END_ARRAY_REF__/) {
4604: my $value='';
4605: if($string =~ /^__HASH_REF__/) {
4606: ($value, $string)=&str2hashref($string);
4607: if(defined($value->{'error'})) {
4608: $array[0] ='Array reference error';
4609: return (\@array, $string);
4610: }
4611: } elsif($string =~ /^__ARRAY_REF__/) {
4612: ($value, $string)=&str2arrayref($string);
4613: if($value->[0] eq 'Array reference error') {
4614: $array[0] ='Array reference error';
4615: return (\@array, $string);
4616: }
4617: } else {
4618: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4619: }
4620: $string =~ s/^&//;
4621:
4622: push(@array, $value);
4623: }
4624:
4625: $string =~ s/^__END_ARRAY_REF__//;
4626:
4627: return (\@array, $string);
4628: }
4629:
4630: # -------------------------------------------------------------------Temp Store
4631:
4632: sub tmpreset {
4633: my ($symb,$namespace,$domain,$stuname) = @_;
4634: if (!$symb) {
4635: $symb=&symbread();
4636: if (!$symb) { $symb= $env{'request.url'}; }
4637: }
4638: $symb=escape($symb);
4639:
4640: if (!$namespace) { $namespace=$env{'request.state'}; }
4641: $namespace=~s/\//\_/g;
4642: $namespace=~s/\W//g;
4643:
4644: if (!$domain) { $domain=$env{'user.domain'}; }
4645: if (!$stuname) { $stuname=$env{'user.name'}; }
4646: if ($domain eq 'public' && $stuname eq 'public') {
4647: $stuname=$ENV{'REMOTE_ADDR'};
4648: }
4649: my $path=LONCAPA::tempdir();
4650: my %hash;
4651: if (tie(%hash,'GDBM_File',
4652: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4653: &GDBM_WRCREAT(),0640)) {
4654: foreach my $key (keys(%hash)) {
4655: if ($key=~ /:$symb/) {
4656: delete($hash{$key});
4657: }
4658: }
4659: }
4660: }
4661:
4662: sub tmpstore {
4663: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4664:
4665: if (!$symb) {
4666: $symb=&symbread();
4667: if (!$symb) { $symb= $env{'request.url'}; }
4668: }
4669: $symb=escape($symb);
4670:
4671: if (!$namespace) {
4672: # I don't think we would ever want to store this for a course.
4673: # it seems this will only be used if we don't have a course.
4674: #$namespace=$env{'request.course.id'};
4675: #if (!$namespace) {
4676: $namespace=$env{'request.state'};
4677: #}
4678: }
4679: $namespace=~s/\//\_/g;
4680: $namespace=~s/\W//g;
4681: if (!$domain) { $domain=$env{'user.domain'}; }
4682: if (!$stuname) { $stuname=$env{'user.name'}; }
4683: if ($domain eq 'public' && $stuname eq 'public') {
4684: $stuname=$ENV{'REMOTE_ADDR'};
4685: }
4686: my $now=time;
4687: my %hash;
4688: my $path=LONCAPA::tempdir();
4689: if (tie(%hash,'GDBM_File',
4690: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4691: &GDBM_WRCREAT(),0640)) {
4692: $hash{"version:$symb"}++;
4693: my $version=$hash{"version:$symb"};
4694: my $allkeys='';
4695: foreach my $key (keys(%$storehash)) {
4696: $allkeys.=$key.':';
4697: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4698: }
4699: $hash{"$version:$symb:timestamp"}=$now;
4700: $allkeys.='timestamp';
4701: $hash{"$version:keys:$symb"}=$allkeys;
4702: if (untie(%hash)) {
4703: return 'ok';
4704: } else {
4705: return "error:$!";
4706: }
4707: } else {
4708: return "error:$!";
4709: }
4710: }
4711:
4712: # -----------------------------------------------------------------Temp Restore
4713:
4714: sub tmprestore {
4715: my ($symb,$namespace,$domain,$stuname) = @_;
4716:
4717: if (!$symb) {
4718: $symb=&symbread();
4719: if (!$symb) { $symb= $env{'request.url'}; }
4720: }
4721: $symb=escape($symb);
4722:
4723: if (!$namespace) { $namespace=$env{'request.state'}; }
4724:
4725: if (!$domain) { $domain=$env{'user.domain'}; }
4726: if (!$stuname) { $stuname=$env{'user.name'}; }
4727: if ($domain eq 'public' && $stuname eq 'public') {
4728: $stuname=$ENV{'REMOTE_ADDR'};
4729: }
4730: my %returnhash;
4731: $namespace=~s/\//\_/g;
4732: $namespace=~s/\W//g;
4733: my %hash;
4734: my $path=LONCAPA::tempdir();
4735: if (tie(%hash,'GDBM_File',
4736: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4737: &GDBM_READER(),0640)) {
4738: my $version=$hash{"version:$symb"};
4739: $returnhash{'version'}=$version;
4740: my $scope;
4741: for ($scope=1;$scope<=$version;$scope++) {
4742: my $vkeys=$hash{"$scope:keys:$symb"};
4743: my @keys=split(/:/,$vkeys);
4744: my $key;
4745: $returnhash{"$scope:keys"}=$vkeys;
4746: foreach $key (@keys) {
4747: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4748: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4749: }
4750: }
4751: if (!(untie(%hash))) {
4752: return "error:$!";
4753: }
4754: } else {
4755: return "error:$!";
4756: }
4757: return %returnhash;
4758: }
4759:
4760: # ----------------------------------------------------------------------- Store
4761:
4762: sub store {
4763: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4764: my $home='';
4765:
4766: if ($stuname) { $home=&homeserver($stuname,$domain); }
4767:
4768: $symb=&symbclean($symb);
4769: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4770:
4771: if (!$domain) { $domain=$env{'user.domain'}; }
4772: if (!$stuname) { $stuname=$env{'user.name'}; }
4773:
4774: &devalidate($symb,$stuname,$domain);
4775:
4776: $symb=escape($symb);
4777: if (!$namespace) {
4778: unless ($namespace=$env{'request.course.id'}) {
4779: return '';
4780: }
4781: }
4782: if (!$home) { $home=$env{'user.home'}; }
4783:
4784: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4785: $$storehash{'host'}=$perlvar{'lonHostID'};
4786:
4787: my $namevalue='';
4788: foreach my $key (keys(%$storehash)) {
4789: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4790: }
4791: $namevalue=~s/\&$//;
4792: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4793: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4794: }
4795:
4796: # -------------------------------------------------------------- Critical Store
4797:
4798: sub cstore {
4799: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4800: my $home='';
4801:
4802: if ($stuname) { $home=&homeserver($stuname,$domain); }
4803:
4804: $symb=&symbclean($symb);
4805: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4806:
4807: if (!$domain) { $domain=$env{'user.domain'}; }
4808: if (!$stuname) { $stuname=$env{'user.name'}; }
4809:
4810: &devalidate($symb,$stuname,$domain);
4811:
4812: $symb=escape($symb);
4813: if (!$namespace) {
4814: unless ($namespace=$env{'request.course.id'}) {
4815: return '';
4816: }
4817: }
4818: if (!$home) { $home=$env{'user.home'}; }
4819:
4820: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4821: $$storehash{'host'}=$perlvar{'lonHostID'};
4822:
4823: my $namevalue='';
4824: foreach my $key (keys(%$storehash)) {
4825: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4826: }
4827: $namevalue=~s/\&$//;
4828: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4829: return critical
4830: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4831: }
4832:
4833: # --------------------------------------------------------------------- Restore
4834:
4835: sub restore {
4836: my ($symb,$namespace,$domain,$stuname) = @_;
4837: my $home='';
4838:
4839: if ($stuname) { $home=&homeserver($stuname,$domain); }
4840:
4841: if (!$symb) {
4842: return if ($namespace eq 'courserequests');
4843: unless ($symb=escape(&symbread())) { return ''; }
4844: } else {
4845: unless ($namespace eq 'courserequests') {
4846: $symb=&escape(&symbclean($symb));
4847: }
4848: }
4849: if (!$namespace) {
4850: unless ($namespace=$env{'request.course.id'}) {
4851: return '';
4852: }
4853: }
4854: if (!$domain) { $domain=$env{'user.domain'}; }
4855: if (!$stuname) { $stuname=$env{'user.name'}; }
4856: if (!$home) { $home=$env{'user.home'}; }
4857: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4858:
4859: my %returnhash=();
4860: foreach my $line (split(/\&/,$answer)) {
4861: my ($name,$value)=split(/\=/,$line);
4862: $returnhash{&unescape($name)}=&thaw_unescape($value);
4863: }
4864: my $version;
4865: for ($version=1;$version<=$returnhash{'version'};$version++) {
4866: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4867: $returnhash{$item}=$returnhash{$version.':'.$item};
4868: }
4869: }
4870: return %returnhash;
4871: }
4872:
4873: # ---------------------------------------------------------- Course Description
4874: #
4875: #
4876:
4877: sub coursedescription {
4878: my ($courseid,$args)=@_;
4879: $courseid=~s/^\///;
4880: $courseid=~s/\_/\//g;
4881: my ($cdomain,$cnum)=split(/\//,$courseid);
4882: my $chome=&homeserver($cnum,$cdomain);
4883: my $normalid=$cdomain.'_'.$cnum;
4884: # need to always cache even if we get errors otherwise we keep
4885: # trying and trying and trying to get the course description.
4886: my %envhash=();
4887: my %returnhash=();
4888:
4889: my $expiretime=600;
4890: if ($env{'request.course.id'} eq $normalid) {
4891: $expiretime=120;
4892: }
4893:
4894: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4895: if (!$args->{'freshen_cache'}
4896: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4897: foreach my $key (keys(%env)) {
4898: next if ($key !~ /^\Q$prefix\E(.*)/);
4899: my ($setting) = $1;
4900: $returnhash{$setting} = $env{$key};
4901: }
4902: return %returnhash;
4903: }
4904:
4905: # get the data again
4906:
4907: if (!$args->{'one_time'}) {
4908: $envhash{'course.'.$normalid.'.last_cache'}=time;
4909: }
4910:
4911: if ($chome ne 'no_host') {
4912: %returnhash=&dump('environment',$cdomain,$cnum);
4913: if (!exists($returnhash{'con_lost'})) {
4914: my $username = $env{'user.name'}; # Defult username
4915: if(defined $args->{'user'}) {
4916: $username = $args->{'user'};
4917: }
4918: $returnhash{'home'}= $chome;
4919: $returnhash{'domain'} = $cdomain;
4920: $returnhash{'num'} = $cnum;
4921: if (!defined($returnhash{'type'})) {
4922: $returnhash{'type'} = 'Course';
4923: }
4924: while (my ($name,$value) = each %returnhash) {
4925: $envhash{'course.'.$normalid.'.'.$name}=$value;
4926: }
4927: $returnhash{'url'}=&clutter($returnhash{'url'});
4928: $returnhash{'fn'}=LONCAPA::tempdir() .
4929: $username.'_'.$cdomain.'_'.$cnum;
4930: $envhash{'course.'.$normalid.'.home'}=$chome;
4931: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4932: $envhash{'course.'.$normalid.'.num'}=$cnum;
4933: }
4934: }
4935: if (!$args->{'one_time'}) {
4936: &appenv(\%envhash);
4937: }
4938: return %returnhash;
4939: }
4940:
4941: sub update_released_required {
4942: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4943: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4944: $cid = $env{'request.course.id'};
4945: $cdom = $env{'course.'.$cid.'.domain'};
4946: $cnum = $env{'course.'.$cid.'.num'};
4947: $chome = $env{'course.'.$cid.'.home'};
4948: }
4949: if ($needsrelease) {
4950: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4951: my $needsupdate;
4952: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4953: $needsupdate = 1;
4954: } else {
4955: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4956: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4957: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4958: $needsupdate = 1;
4959: }
4960: }
4961: if ($needsupdate) {
4962: my %needshash = (
4963: 'internal.releaserequired' => $needsrelease,
4964: );
4965: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4966: if ($putresult eq 'ok') {
4967: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4968: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4969: if (ref($crsinfo{$cid}) eq 'HASH') {
4970: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4971: &courseidput($cdom,\%crsinfo,$chome,'notime');
4972: }
4973: }
4974: }
4975: }
4976: return;
4977: }
4978:
4979: # -------------------------------------------------See if a user is privileged
4980:
4981: sub privileged {
4982: my ($username,$domain,$possdomains,$possroles)=@_;
4983: my $now = time;
4984: my $roles;
4985: if (ref($possroles) eq 'ARRAY') {
4986: $roles = $possroles;
4987: } else {
4988: $roles = ['dc','su'];
4989: }
4990: if (ref($possdomains) eq 'ARRAY') {
4991: my %privileged = &privileged_by_domain($possdomains,$roles);
4992: foreach my $dom (@{$possdomains}) {
4993: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
4994: (ref($privileged{$dom}) eq 'HASH')) {
4995: foreach my $role (@{$roles}) {
4996: if (ref($privileged{$dom}{$role}) eq 'HASH') {
4997: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
4998: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
4999: return 1 unless (($end && $end < $now) ||
5000: ($start && $start > $now));
5001: }
5002: }
5003: }
5004: }
5005: }
5006: } else {
5007: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5008: my $now = time;
5009:
5010: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
5011: my ($trole, $tend, $tstart) = split(/_/, $role);
5012: if (grep(/^\Q$trole\E$/,@{$roles})) {
5013: return 1 unless ($tend && $tend < $now)
5014: or ($tstart && $tstart > $now);
5015: }
5016: }
5017: }
5018: return 0;
5019: }
5020:
5021: sub privileged_by_domain {
5022: my ($domains,$roles) = @_;
5023: my %privileged = ();
5024: my $cachetime = 60*60*24;
5025: my $now = time;
5026: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5027: return %privileged;
5028: }
5029: foreach my $dom (@{$domains}) {
5030: next if (ref($privileged{$dom}) eq 'HASH');
5031: my $needroles;
5032: foreach my $role (@{$roles}) {
5033: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5034: if (defined($cached)) {
5035: if (ref($result) eq 'HASH') {
5036: $privileged{$dom}{$role} = $result;
5037: }
5038: } else {
5039: $needroles = 1;
5040: }
5041: }
5042: if ($needroles) {
5043: my %dompersonnel = &get_domain_roles($dom,$roles);
5044: $privileged{$dom} = {};
5045: foreach my $server (keys(%dompersonnel)) {
5046: if (ref($dompersonnel{$server}) eq 'HASH') {
5047: foreach my $item (keys(%{$dompersonnel{$server}})) {
5048: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5049: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5050: next if ($end && $end < $now);
5051: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5052: $dompersonnel{$server}{$item};
5053: }
5054: }
5055: }
5056: if (ref($privileged{$dom}) eq 'HASH') {
5057: foreach my $role (@{$roles}) {
5058: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5059: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5060: } else {
5061: my %hash = ();
5062: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5063: }
5064: }
5065: }
5066: }
5067: }
5068: return %privileged;
5069: }
5070:
5071: # -------------------------------------------------------- Get user privileges
5072:
5073: sub rolesinit {
5074: my ($domain, $username) = @_;
5075: my %userroles = ('user.login.time' => time);
5076: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5077:
5078: # firstaccess and timerinterval are related to timed maps/resources.
5079: # also, blocking can be triggered by an activating timer
5080: # it's saved in the user's %env.
5081: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5082: my %timerinterval = &dump('timerinterval', $domain, $username);
5083: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5084: %timerintchk, %timerintenv);
5085:
5086: foreach my $key (keys(%firstaccess)) {
5087: my ($cid, $rest) = split(/\0/, $key);
5088: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5089: }
5090:
5091: foreach my $key (keys(%timerinterval)) {
5092: my ($cid,$rest) = split(/\0/,$key);
5093: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5094: }
5095:
5096: my %allroles=();
5097: my %allgroups=();
5098:
5099: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
5100: my $role = $rolesdump{$area};
5101: $area =~ s/\_\w\w$//;
5102:
5103: my ($trole, $tend, $tstart, $group_privs);
5104:
5105: if ($role =~ /^cr/) {
5106: # Custom role, defined by a user
5107: # e.g., user.role.cr/msu/smith/mynewrole
5108: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5109: $trole = $1;
5110: ($tend, $tstart) = split('_', $2);
5111: } else {
5112: $trole = $role;
5113: }
5114: } elsif ($role =~ m|^gr/|) {
5115: # Role of member in a group, defined within a course/community
5116: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5117: ($trole, $tend, $tstart) = split(/_/, $role);
5118: next if $tstart eq '-1';
5119: ($trole, $group_privs) = split(/\//, $trole);
5120: $group_privs = &unescape($group_privs);
5121: } else {
5122: # Just a normal role, defined in roles.tab
5123: ($trole, $tend, $tstart) = split(/_/,$role);
5124: }
5125:
5126: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5127: $username);
5128: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5129:
5130: # role expired or not available yet?
5131: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5132: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5133:
5134: next if $area eq '' or $trole eq '';
5135:
5136: my $spec = "$trole.$area";
5137: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5138:
5139: if ($trole =~ /^cr\//) {
5140: # Custom role, defined by a user
5141: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5142: } elsif ($trole eq 'gr') {
5143: # Role of a member in a group, defined within a course/community
5144: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5145: next;
5146: } else {
5147: # Normal role, defined in roles.tab
5148: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5149: }
5150:
5151: my $cid = $tdomain.'_'.$trest;
5152: unless ($firstaccchk{$cid}) {
5153: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5154: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5155: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5156: $coursetimerstarts{$cid}{$item};
5157: }
5158: }
5159: $firstaccchk{$cid} = 1;
5160: }
5161: unless ($timerintchk{$cid}) {
5162: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5163: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5164: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5165: $coursetimerintervals{$cid}{$item};
5166: }
5167: }
5168: $timerintchk{$cid} = 1;
5169: }
5170: }
5171:
5172: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5173: \%allroles, \%allgroups);
5174: $env{'user.adv'} = $userroles{'user.adv'};
5175:
5176: return (\%userroles,\%firstaccenv,\%timerintenv);
5177: }
5178:
5179: sub set_arearole {
5180: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5181: unless ($nolog) {
5182: # log the associated role with the area
5183: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5184: }
5185: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5186: }
5187:
5188: sub custom_roleprivs {
5189: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5190: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5191: my $homsvr=homeserver($rauthor,$rdomain);
5192: if (&hostname($homsvr) ne '') {
5193: my ($rdummy,$roledef)=
5194: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5195: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5196: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5197: if (defined($syspriv)) {
5198: if ($trest =~ /^$match_community$/) {
5199: $syspriv =~ s/bre\&S//;
5200: }
5201: $$allroles{'cm./'}.=':'.$syspriv;
5202: $$allroles{$spec.'./'}.=':'.$syspriv;
5203: }
5204: if ($tdomain ne '') {
5205: if (defined($dompriv)) {
5206: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5207: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5208: }
5209: if (($trest ne '') && (defined($coursepriv))) {
5210: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5211: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5212: }
5213: }
5214: }
5215: }
5216: }
5217:
5218: sub group_roleprivs {
5219: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5220: my $access = 1;
5221: my $now = time;
5222: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5223: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5224: if ($access) {
5225: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5226: $$allgroups{$course}{$group} .=':'.$group_privs;
5227: }
5228: }
5229:
5230: sub standard_roleprivs {
5231: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5232: if (defined($pr{$trole.':s'})) {
5233: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5234: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5235: }
5236: if ($tdomain ne '') {
5237: if (defined($pr{$trole.':d'})) {
5238: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5239: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5240: }
5241: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5242: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5243: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5244: }
5245: }
5246: }
5247:
5248: sub set_userprivs {
5249: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5250: my $author=0;
5251: my $adv=0;
5252: my %grouproles = ();
5253: if (keys(%{$allgroups}) > 0) {
5254: my @groupkeys;
5255: foreach my $role (keys(%{$allroles})) {
5256: push(@groupkeys,$role);
5257: }
5258: if (ref($groups_roles) eq 'HASH') {
5259: foreach my $key (keys(%{$groups_roles})) {
5260: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5261: push(@groupkeys,$key);
5262: }
5263: }
5264: }
5265: if (@groupkeys > 0) {
5266: foreach my $role (@groupkeys) {
5267: my ($trole,$area,$sec,$extendedarea);
5268: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5269: $trole = $1;
5270: $area = $2;
5271: $sec = $3;
5272: $extendedarea = $area.$sec;
5273: if (exists($$allgroups{$area})) {
5274: foreach my $group (keys(%{$$allgroups{$area}})) {
5275: my $spec = $trole.'.'.$extendedarea;
5276: $grouproles{$spec.'.'.$area.'/'.$group} =
5277: $$allgroups{$area}{$group};
5278: }
5279: }
5280: }
5281: }
5282: }
5283: }
5284: foreach my $group (keys(%grouproles)) {
5285: $$allroles{$group} = $grouproles{$group};
5286: }
5287: foreach my $role (keys(%{$allroles})) {
5288: my %thesepriv;
5289: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5290: foreach my $item (split(/:/,$$allroles{$role})) {
5291: if ($item ne '') {
5292: my ($privilege,$restrictions)=split(/&/,$item);
5293: if ($restrictions eq '') {
5294: $thesepriv{$privilege}='F';
5295: } elsif ($thesepriv{$privilege} ne 'F') {
5296: $thesepriv{$privilege}.=$restrictions;
5297: }
5298: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5299: }
5300: }
5301: my $thesestr='';
5302: foreach my $priv (sort(keys(%thesepriv))) {
5303: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5304: }
5305: $userroles->{'user.priv.'.$role} = $thesestr;
5306: }
5307: return ($author,$adv);
5308: }
5309:
5310: sub role_status {
5311: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5312: my @pwhere = ();
5313: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5314: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5315: unless (!defined($$role) || $$role eq '') {
5316: $$where=join('.',@pwhere);
5317: $$trolecode=$$role.'.'.$$where;
5318: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5319: $$tstatus='is';
5320: if ($$tstart && $$tstart>$update) {
5321: $$tstatus='future';
5322: if ($$tstart<$now) {
5323: if ($$tstart && $$tstart>$refresh) {
5324: if (($$where ne '') && ($$role ne '')) {
5325: my (%allroles,%allgroups,$group_privs,
5326: %groups_roles,@rolecodes);
5327: my %userroles = (
5328: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5329: );
5330: @rolecodes = ('cm');
5331: my $spec=$$role.'.'.$$where;
5332: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5333: if ($$role =~ /^cr\//) {
5334: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5335: push(@rolecodes,'cr');
5336: } elsif ($$role eq 'gr') {
5337: push(@rolecodes,$$role);
5338: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5339: $env{'user.name'});
5340: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5341: (undef,my $group_privs) = split(/\//,$trole);
5342: $group_privs = &unescape($group_privs);
5343: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5344: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5345: &get_groups_roles($tdomain,$trest,
5346: \%course_roles,\@rolecodes,
5347: \%groups_roles);
5348: } else {
5349: push(@rolecodes,$$role);
5350: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5351: }
5352: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5353: &appenv(\%userroles,\@rolecodes);
5354: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5355: }
5356: }
5357: $$tstatus = 'is';
5358: }
5359: }
5360: if ($$tend) {
5361: if ($$tend<$update) {
5362: $$tstatus='expired';
5363: } elsif ($$tend<$now) {
5364: $$tstatus='will_not';
5365: }
5366: }
5367: }
5368: }
5369: }
5370:
5371: sub get_groups_roles {
5372: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5373: return unless((ref($cdom_courseroles) eq 'HASH') &&
5374: (ref($rolecodes) eq 'ARRAY') &&
5375: (ref($groups_roles) eq 'HASH'));
5376: if (keys(%{$cdom_courseroles}) > 0) {
5377: my ($cnum) = ($rest =~ /^($match_courseid)/);
5378: if ($cdom ne '' && $cnum ne '') {
5379: foreach my $key (keys(%{$cdom_courseroles})) {
5380: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5381: my $crsrole = $1;
5382: my $crssec = $2;
5383: if ($crsrole =~ /^cr/) {
5384: unless (grep(/^cr$/,@{$rolecodes})) {
5385: push(@{$rolecodes},'cr');
5386: }
5387: } else {
5388: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5389: push(@{$rolecodes},$crsrole);
5390: }
5391: }
5392: my $rolekey = "$crsrole./$cdom/$cnum";
5393: if ($crssec ne '') {
5394: $rolekey .= "/$crssec";
5395: }
5396: $rolekey .= './';
5397: $groups_roles->{$rolekey} = $rolecodes;
5398: }
5399: }
5400: }
5401: }
5402: return;
5403: }
5404:
5405: sub delete_env_groupprivs {
5406: my ($where,$courseroles,$possroles) = @_;
5407: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5408: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5409: unless (ref($courseroles->{$udom}) eq 'HASH') {
5410: %{$courseroles->{$udom}} =
5411: &get_my_roles('','','userroles',['active'],
5412: $possroles,[$udom],1);
5413: }
5414: if (ref($courseroles->{$udom}) eq 'HASH') {
5415: foreach my $item (keys(%{$courseroles->{$udom}})) {
5416: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5417: my $area = '/'.$cdom.'/'.$cnum;
5418: my $privkey = "user.priv.$crsrole.$area";
5419: if ($crssec ne '') {
5420: $privkey .= '/'.$crssec;
5421: }
5422: $privkey .= ".$area/$group";
5423: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5424: }
5425: }
5426: return;
5427: }
5428:
5429: sub check_adhoc_privs {
5430: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5431: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5432: my $setprivs;
5433: if ($env{$cckey}) {
5434: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5435: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5436: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5437: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5438: $setprivs = 1;
5439: }
5440: } else {
5441: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5442: $setprivs = 1;
5443: }
5444: return $setprivs;
5445: }
5446:
5447: sub set_adhoc_privileges {
5448: # role can be cc or ca
5449: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5450: my $area = '/'.$dcdom.'/'.$pickedcourse;
5451: my $spec = $role.'.'.$area;
5452: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5453: $env{'user.name'},1);
5454: my %ccrole = ();
5455: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5456: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5457: &appenv(\%userroles,[$role,'cm']);
5458: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5459: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5460: &appenv( {'request.role' => $spec,
5461: 'request.role.domain' => $dcdom,
5462: 'request.course.sec' => ''
5463: }
5464: );
5465: my $tadv=0;
5466: if (&allowed('adv') eq 'F') { $tadv=1; }
5467: &appenv({'request.role.adv' => $tadv});
5468: }
5469: }
5470:
5471: # --------------------------------------------------------------- get interface
5472:
5473: sub get {
5474: my ($namespace,$storearr,$udomain,$uname)=@_;
5475: my $items='';
5476: foreach my $item (@$storearr) {
5477: $items.=&escape($item).'&';
5478: }
5479: $items=~s/\&$//;
5480: if (!$udomain) { $udomain=$env{'user.domain'}; }
5481: if (!$uname) { $uname=$env{'user.name'}; }
5482: my $uhome=&homeserver($uname,$udomain);
5483:
5484: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5485: my @pairs=split(/\&/,$rep);
5486: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5487: return @pairs;
5488: }
5489: my %returnhash=();
5490: my $i=0;
5491: foreach my $item (@$storearr) {
5492: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5493: $i++;
5494: }
5495: return %returnhash;
5496: }
5497:
5498: # --------------------------------------------------------------- del interface
5499:
5500: sub del {
5501: my ($namespace,$storearr,$udomain,$uname)=@_;
5502: my $items='';
5503: foreach my $item (@$storearr) {
5504: $items.=&escape($item).'&';
5505: }
5506:
5507: $items=~s/\&$//;
5508: if (!$udomain) { $udomain=$env{'user.domain'}; }
5509: if (!$uname) { $uname=$env{'user.name'}; }
5510: my $uhome=&homeserver($uname,$udomain);
5511: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5512: }
5513:
5514: # -------------------------------------------------------------- dump interface
5515:
5516: sub unserialize {
5517: my ($rep, $escapedkeys) = @_;
5518:
5519: return {} if $rep =~ /^error/;
5520:
5521: my %returnhash=();
5522: foreach my $item (split /\&/, $rep) {
5523: my ($key, $value) = split(/=/, $item, 2);
5524: $key = unescape($key) unless $escapedkeys;
5525: next if $key =~ /^error: 2 /;
5526: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5527: }
5528: #return %returnhash;
5529: return \%returnhash;
5530: }
5531:
5532: # see Lond::dump_with_regexp
5533: # if $escapedkeys hash keys won't get unescaped.
5534: sub dump {
5535: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5536: if (!$udomain) { $udomain=$env{'user.domain'}; }
5537: if (!$uname) { $uname=$env{'user.name'}; }
5538: my $uhome=&homeserver($uname,$udomain);
5539:
5540: my $reply;
5541: if (grep { $_ eq $uhome } current_machine_ids()) {
5542: # user is hosted on this machine
5543: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5544: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5545: return %{unserialize($reply, $escapedkeys)};
5546: }
5547: if ($regexp) {
5548: $regexp=&escape($regexp);
5549: } else {
5550: $regexp='.';
5551: }
5552: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5553: my @pairs=split(/\&/,$rep);
5554: my %returnhash=();
5555: if (!($rep =~ /^error/ )) {
5556: foreach my $item (@pairs) {
5557: my ($key,$value)=split(/=/,$item,2);
5558: $key = unescape($key) unless $escapedkeys;
5559: #$key = &unescape($key);
5560: next if ($key =~ /^error: 2 /);
5561: $returnhash{$key}=&thaw_unescape($value);
5562: }
5563: }
5564: return %returnhash;
5565: }
5566:
5567:
5568: # --------------------------------------------------------- dumpstore interface
5569:
5570: sub dumpstore {
5571: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5572: # same as dump but keys must be escaped. They may contain colon separated
5573: # lists of values that may themself contain colons (e.g. symbs).
5574: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5575: }
5576:
5577: # -------------------------------------------------------------- keys interface
5578:
5579: sub getkeys {
5580: my ($namespace,$udomain,$uname)=@_;
5581: if (!$udomain) { $udomain=$env{'user.domain'}; }
5582: if (!$uname) { $uname=$env{'user.name'}; }
5583: my $uhome=&homeserver($uname,$udomain);
5584: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5585: my @keyarray=();
5586: foreach my $key (split(/\&/,$rep)) {
5587: next if ($key =~ /^error: 2 /);
5588: push(@keyarray,&unescape($key));
5589: }
5590: return @keyarray;
5591: }
5592:
5593: # --------------------------------------------------------------- currentdump
5594: sub currentdump {
5595: my ($courseid,$sdom,$sname)=@_;
5596: $courseid = $env{'request.course.id'} if (! defined($courseid));
5597: $sdom = $env{'user.domain'} if (! defined($sdom));
5598: $sname = $env{'user.name'} if (! defined($sname));
5599: my $uhome = &homeserver($sname,$sdom);
5600: my $rep;
5601:
5602: if (grep { $_ eq $uhome } current_machine_ids()) {
5603: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5604: $courseid)));
5605: } else {
5606: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5607: }
5608:
5609: return if ($rep =~ /^(error:|no_such_host)/);
5610: #
5611: my %returnhash=();
5612: #
5613: if ($rep eq "unknown_cmd") {
5614: # an old lond will not know currentdump
5615: # Do a dump and make it look like a currentdump
5616: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5617: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5618: my %hash = @tmp;
5619: @tmp=();
5620: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5621: } else {
5622: my @pairs=split(/\&/,$rep);
5623: foreach my $pair (@pairs) {
5624: my ($key,$value)=split(/=/,$pair,2);
5625: my ($symb,$param) = split(/:/,$key);
5626: $returnhash{&unescape($symb)}->{&unescape($param)} =
5627: &thaw_unescape($value);
5628: }
5629: }
5630: return %returnhash;
5631: }
5632:
5633: sub convert_dump_to_currentdump{
5634: my %hash = %{shift()};
5635: my %returnhash;
5636: # Code ripped from lond, essentially. The only difference
5637: # here is the unescaping done by lonnet::dump(). Conceivably
5638: # we might run in to problems with parameter names =~ /^v\./
5639: while (my ($key,$value) = each(%hash)) {
5640: my ($v,$symb,$param) = split(/:/,$key);
5641: $symb = &unescape($symb);
5642: $param = &unescape($param);
5643: next if ($v eq 'version' || $symb eq 'keys');
5644: next if (exists($returnhash{$symb}) &&
5645: exists($returnhash{$symb}->{$param}) &&
5646: $returnhash{$symb}->{'v.'.$param} > $v);
5647: $returnhash{$symb}->{$param}=$value;
5648: $returnhash{$symb}->{'v.'.$param}=$v;
5649: }
5650: #
5651: # Remove all of the keys in the hashes which keep track of
5652: # the version of the parameter.
5653: while (my ($symb,$param_hash) = each(%returnhash)) {
5654: # use a foreach because we are going to delete from the hash.
5655: foreach my $key (keys(%$param_hash)) {
5656: delete($param_hash->{$key}) if ($key =~ /^v\./);
5657: }
5658: }
5659: return \%returnhash;
5660: }
5661:
5662: # ------------------------------------------------------ critical inc interface
5663:
5664: sub cinc {
5665: return &inc(@_,'critical');
5666: }
5667:
5668: # --------------------------------------------------------------- inc interface
5669:
5670: sub inc {
5671: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5672: if (!$udomain) { $udomain=$env{'user.domain'}; }
5673: if (!$uname) { $uname=$env{'user.name'}; }
5674: my $uhome=&homeserver($uname,$udomain);
5675: my $items='';
5676: if (! ref($store)) {
5677: # got a single value, so use that instead
5678: $items = &escape($store).'=&';
5679: } elsif (ref($store) eq 'SCALAR') {
5680: $items = &escape($$store).'=&';
5681: } elsif (ref($store) eq 'ARRAY') {
5682: $items = join('=&',map {&escape($_);} @{$store});
5683: } elsif (ref($store) eq 'HASH') {
5684: while (my($key,$value) = each(%{$store})) {
5685: $items.= &escape($key).'='.&escape($value).'&';
5686: }
5687: }
5688: $items=~s/\&$//;
5689: if ($critical) {
5690: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5691: } else {
5692: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5693: }
5694: }
5695:
5696: # --------------------------------------------------------------- put interface
5697:
5698: sub put {
5699: my ($namespace,$storehash,$udomain,$uname)=@_;
5700: if (!$udomain) { $udomain=$env{'user.domain'}; }
5701: if (!$uname) { $uname=$env{'user.name'}; }
5702: my $uhome=&homeserver($uname,$udomain);
5703: my $items='';
5704: foreach my $item (keys(%$storehash)) {
5705: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5706: }
5707: $items=~s/\&$//;
5708: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5709: }
5710:
5711: # ------------------------------------------------------------ newput interface
5712:
5713: sub newput {
5714: my ($namespace,$storehash,$udomain,$uname)=@_;
5715: if (!$udomain) { $udomain=$env{'user.domain'}; }
5716: if (!$uname) { $uname=$env{'user.name'}; }
5717: my $uhome=&homeserver($uname,$udomain);
5718: my $items='';
5719: foreach my $key (keys(%$storehash)) {
5720: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5721: }
5722: $items=~s/\&$//;
5723: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5724: }
5725:
5726: # --------------------------------------------------------- putstore interface
5727:
5728: sub putstore {
5729: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5730: if (!$udomain) { $udomain=$env{'user.domain'}; }
5731: if (!$uname) { $uname=$env{'user.name'}; }
5732: my $uhome=&homeserver($uname,$udomain);
5733: my $items='';
5734: foreach my $key (keys(%$storehash)) {
5735: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5736: }
5737: $items=~s/\&$//;
5738: my $esc_symb=&escape($symb);
5739: my $esc_v=&escape($version);
5740: my $reply =
5741: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5742: $uhome);
5743: if ($reply eq 'unknown_cmd') {
5744: # gfall back to way things use to be done
5745: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5746: $uname);
5747: }
5748: return $reply;
5749: }
5750:
5751: sub old_putstore {
5752: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5753: if (!$udomain) { $udomain=$env{'user.domain'}; }
5754: if (!$uname) { $uname=$env{'user.name'}; }
5755: my $uhome=&homeserver($uname,$udomain);
5756: my %newstorehash;
5757: foreach my $item (keys(%$storehash)) {
5758: my $key = $version.':'.&escape($symb).':'.$item;
5759: $newstorehash{$key} = $storehash->{$item};
5760: }
5761: my $items='';
5762: my %allitems = ();
5763: foreach my $item (keys(%newstorehash)) {
5764: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5765: my $key = $1.':keys:'.$2;
5766: $allitems{$key} .= $3.':';
5767: }
5768: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5769: }
5770: foreach my $item (keys(%allitems)) {
5771: $allitems{$item} =~ s/\:$//;
5772: $items.= $item.'='.$allitems{$item}.'&';
5773: }
5774: $items=~s/\&$//;
5775: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5776: }
5777:
5778: # ------------------------------------------------------ critical put interface
5779:
5780: sub cput {
5781: my ($namespace,$storehash,$udomain,$uname)=@_;
5782: if (!$udomain) { $udomain=$env{'user.domain'}; }
5783: if (!$uname) { $uname=$env{'user.name'}; }
5784: my $uhome=&homeserver($uname,$udomain);
5785: my $items='';
5786: foreach my $item (keys(%$storehash)) {
5787: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5788: }
5789: $items=~s/\&$//;
5790: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5791: }
5792:
5793: # -------------------------------------------------------------- eget interface
5794:
5795: sub eget {
5796: my ($namespace,$storearr,$udomain,$uname)=@_;
5797: my $items='';
5798: foreach my $item (@$storearr) {
5799: $items.=&escape($item).'&';
5800: }
5801: $items=~s/\&$//;
5802: if (!$udomain) { $udomain=$env{'user.domain'}; }
5803: if (!$uname) { $uname=$env{'user.name'}; }
5804: my $uhome=&homeserver($uname,$udomain);
5805: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5806: my @pairs=split(/\&/,$rep);
5807: my %returnhash=();
5808: my $i=0;
5809: foreach my $item (@$storearr) {
5810: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5811: $i++;
5812: }
5813: return %returnhash;
5814: }
5815:
5816: # ------------------------------------------------------------ tmpput interface
5817: sub tmpput {
5818: my ($storehash,$server,$context)=@_;
5819: my $items='';
5820: foreach my $item (keys(%$storehash)) {
5821: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5822: }
5823: $items=~s/\&$//;
5824: if (defined($context)) {
5825: $items .= ':'.&escape($context);
5826: }
5827: return &reply("tmpput:$items",$server);
5828: }
5829:
5830: # ------------------------------------------------------------ tmpget interface
5831: sub tmpget {
5832: my ($token,$server)=@_;
5833: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5834: my $rep=&reply("tmpget:$token",$server);
5835: my %returnhash;
5836: foreach my $item (split(/\&/,$rep)) {
5837: my ($key,$value)=split(/=/,$item);
5838: next if ($key =~ /^error: 2 /);
5839: $returnhash{&unescape($key)}=&thaw_unescape($value);
5840: }
5841: return %returnhash;
5842: }
5843:
5844: # ------------------------------------------------------------ tmpdel interface
5845: sub tmpdel {
5846: my ($token,$server)=@_;
5847: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5848: return &reply("tmpdel:$token",$server);
5849: }
5850:
5851: # ------------------------------------------------------------ get_timebased_id
5852:
5853: sub get_timebased_id {
5854: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5855: $maxtries) = @_;
5856: my ($newid,$error,$dellock);
5857: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5858: return ('','ok','invalid call to get suffix');
5859: }
5860:
5861: # set defaults for any optional args for which values were not supplied
5862: if ($who eq '') {
5863: $who = $env{'user.name'}.':'.$env{'user.domain'};
5864: }
5865: if (!$locktries) {
5866: $locktries = 3;
5867: }
5868: if (!$maxtries) {
5869: $maxtries = 10;
5870: }
5871:
5872: if (($cdom eq '') || ($cnum eq '')) {
5873: if ($env{'request.course.id'}) {
5874: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5875: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5876: }
5877: if (($cdom eq '') || ($cnum eq '')) {
5878: return ('','ok','call to get suffix not in course context');
5879: }
5880: }
5881:
5882: # construct locking item
5883: my $lockhash = {
5884: $prefix."\0".'locked_'.$keyid => $who,
5885: };
5886: my $tries = 0;
5887:
5888: # attempt to get lock on nohist_$namespace file
5889: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5890: while (($gotlock ne 'ok') && $tries <$locktries) {
5891: $tries ++;
5892: sleep 1;
5893: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5894: }
5895:
5896: # attempt to get unique identifier, based on current timestamp
5897: if ($gotlock eq 'ok') {
5898: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
5899: my $id = time;
5900: $newid = $id;
5901: my $idtries = 0;
5902: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
5903: if ($idtype eq 'concat') {
5904: $newid = $id.$idtries;
5905: } else {
5906: $newid ++;
5907: }
5908: $idtries ++;
5909: }
5910: if (!exists($inuse{$prefix."\0".$newid})) {
5911: my %new_item = (
5912: $prefix."\0".$newid => $who,
5913: );
5914: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
5915: $cdom,$cnum);
5916: if ($putresult ne 'ok') {
5917: undef($newid);
5918: $error = 'error saving new item: '.$putresult;
5919: }
5920: } else {
5921: $error = ('error: no unique suffix available for the new item ');
5922: }
5923: # remove lock
5924: my @del_lock = ($prefix."\0".'locked_'.$keyid);
5925: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
5926: } else {
5927: $error = "error: could not obtain lockfile\n";
5928: $dellock = 'ok';
5929: }
5930: return ($newid,$dellock,$error);
5931: }
5932:
5933: # -------------------------------------------------- portfolio access checking
5934:
5935: sub portfolio_access {
5936: my ($requrl) = @_;
5937: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5938: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5939: if ($result) {
5940: my %setters;
5941: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5942: my ($startblock,$endblock) =
5943: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5944: if ($startblock && $endblock) {
5945: return 'B';
5946: }
5947: } else {
5948: my ($startblock,$endblock) =
5949: &Apache::loncommon::blockcheck(\%setters,'port');
5950: if ($startblock && $endblock) {
5951: return 'B';
5952: }
5953: }
5954: }
5955: if ($result eq 'ok') {
5956: return 'F';
5957: } elsif ($result =~ /^[^:]+:guest_/) {
5958: return 'A';
5959: }
5960: return '';
5961: }
5962:
5963: sub get_portfolio_access {
5964: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5965:
5966: if (!ref($access_hash)) {
5967: my $current_perms = &get_portfile_permissions($udom,$unum);
5968: my %access_controls = &get_access_controls($current_perms,$group,
5969: $file_name);
5970: $access_hash = $access_controls{$file_name};
5971: }
5972:
5973: my ($public,$guest,@domains,@users,@courses,@groups);
5974: my $now = time;
5975: if (ref($access_hash) eq 'HASH') {
5976: foreach my $key (keys(%{$access_hash})) {
5977: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5978: if ($start > $now) {
5979: next;
5980: }
5981: if ($end && $end<$now) {
5982: next;
5983: }
5984: if ($scope eq 'public') {
5985: $public = $key;
5986: last;
5987: } elsif ($scope eq 'guest') {
5988: $guest = $key;
5989: } elsif ($scope eq 'domains') {
5990: push(@domains,$key);
5991: } elsif ($scope eq 'users') {
5992: push(@users,$key);
5993: } elsif ($scope eq 'course') {
5994: push(@courses,$key);
5995: } elsif ($scope eq 'group') {
5996: push(@groups,$key);
5997: }
5998: }
5999: if ($public) {
6000: return 'ok';
6001: }
6002: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6003: if ($guest) {
6004: return $guest;
6005: }
6006: } else {
6007: if (@domains > 0) {
6008: foreach my $domkey (@domains) {
6009: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6010: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6011: return 'ok';
6012: }
6013: }
6014: }
6015: }
6016: if (@users > 0) {
6017: foreach my $userkey (@users) {
6018: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6019: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6020: if (ref($item) eq 'HASH') {
6021: if (($item->{'uname'} eq $env{'user.name'}) &&
6022: ($item->{'udom'} eq $env{'user.domain'})) {
6023: return 'ok';
6024: }
6025: }
6026: }
6027: }
6028: }
6029: }
6030: my %roleshash;
6031: my @courses_and_groups = @courses;
6032: push(@courses_and_groups,@groups);
6033: if (@courses_and_groups > 0) {
6034: my (%allgroups,%allroles);
6035: my ($start,$end,$role,$sec,$group);
6036: foreach my $envkey (%env) {
6037: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6038: my $cid = $2.'_'.$3;
6039: if ($1 eq 'gr') {
6040: $group = $4;
6041: $allgroups{$cid}{$group} = $env{$envkey};
6042: } else {
6043: if ($4 eq '') {
6044: $sec = 'none';
6045: } else {
6046: $sec = $4;
6047: }
6048: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6049: }
6050: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6051: my $cid = $2.'_'.$3;
6052: if ($4 eq '') {
6053: $sec = 'none';
6054: } else {
6055: $sec = $4;
6056: }
6057: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6058: }
6059: }
6060: if (keys(%allroles) == 0) {
6061: return;
6062: }
6063: foreach my $key (@courses_and_groups) {
6064: my %content = %{$$access_hash{$key}};
6065: my $cnum = $content{'number'};
6066: my $cdom = $content{'domain'};
6067: my $cid = $cdom.'_'.$cnum;
6068: if (!exists($allroles{$cid})) {
6069: next;
6070: }
6071: foreach my $role_id (keys(%{$content{'roles'}})) {
6072: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6073: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6074: my @status = @{$content{'roles'}{$role_id}{'access'}};
6075: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6076: foreach my $role (keys(%{$allroles{$cid}})) {
6077: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6078: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6079: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6080: if (grep/^all$/,@sections) {
6081: return 'ok';
6082: } else {
6083: if (grep/^$sec$/,@sections) {
6084: return 'ok';
6085: }
6086: }
6087: }
6088: }
6089: if (keys(%{$allgroups{$cid}}) == 0) {
6090: if (grep/^none$/,@groups) {
6091: return 'ok';
6092: }
6093: } else {
6094: if (grep/^all$/,@groups) {
6095: return 'ok';
6096: }
6097: foreach my $group (keys(%{$allgroups{$cid}})) {
6098: if (grep/^$group$/,@groups) {
6099: return 'ok';
6100: }
6101: }
6102: }
6103: }
6104: }
6105: }
6106: }
6107: }
6108: if ($guest) {
6109: return $guest;
6110: }
6111: }
6112: }
6113: return;
6114: }
6115:
6116: sub course_group_datechecker {
6117: my ($dates,$now,$status) = @_;
6118: my ($start,$end) = split(/\./,$dates);
6119: if (!$start && !$end) {
6120: return 'ok';
6121: }
6122: if (grep/^active$/,@{$status}) {
6123: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6124: return 'ok';
6125: }
6126: }
6127: if (grep/^previous$/,@{$status}) {
6128: if ($end > $now ) {
6129: return 'ok';
6130: }
6131: }
6132: if (grep/^future$/,@{$status}) {
6133: if ($start > $now) {
6134: return 'ok';
6135: }
6136: }
6137: return;
6138: }
6139:
6140: sub parse_portfolio_url {
6141: my ($url) = @_;
6142:
6143: my ($type,$udom,$unum,$group,$file_name);
6144:
6145: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6146: $type = 1;
6147: $udom = $1;
6148: $unum = $2;
6149: $file_name = $3;
6150: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6151: $type = 2;
6152: $udom = $1;
6153: $unum = $2;
6154: $group = $3;
6155: $file_name = $3.'/'.$4;
6156: }
6157: if (wantarray) {
6158: return ($type,$udom,$unum,$file_name,$group);
6159: }
6160: return $type;
6161: }
6162:
6163: sub is_portfolio_url {
6164: my ($url) = @_;
6165: return scalar(&parse_portfolio_url($url));
6166: }
6167:
6168: sub is_portfolio_file {
6169: my ($file) = @_;
6170: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6171: return 1;
6172: }
6173: return;
6174: }
6175:
6176: sub usertools_access {
6177: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6178: my ($access,%tools);
6179: if ($context eq '') {
6180: $context = 'tools';
6181: }
6182: if ($context eq 'requestcourses') {
6183: %tools = (
6184: official => 1,
6185: unofficial => 1,
6186: community => 1,
6187: );
6188: } elsif ($context eq 'requestauthor') {
6189: %tools = (
6190: requestauthor => 1,
6191: );
6192: } else {
6193: %tools = (
6194: aboutme => 1,
6195: blog => 1,
6196: webdav => 1,
6197: portfolio => 1,
6198: );
6199: }
6200: return if (!defined($tools{$tool}));
6201:
6202: if ((!defined($udom)) || (!defined($uname))) {
6203: $udom = $env{'user.domain'};
6204: $uname = $env{'user.name'};
6205: }
6206:
6207: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6208: if ($action ne 'reload') {
6209: if ($context eq 'requestcourses') {
6210: return $env{'environment.canrequest.'.$tool};
6211: } elsif ($context eq 'requestauthor') {
6212: return $env{'environment.canrequest.author'};
6213: } else {
6214: return $env{'environment.availabletools.'.$tool};
6215: }
6216: }
6217: }
6218:
6219: my ($toolstatus,$inststatus,$envkey);
6220: if ($context eq 'requestauthor') {
6221: $envkey = $context;
6222: } else {
6223: $envkey = $context.'.'.$tool;
6224: }
6225:
6226: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6227: ($action ne 'reload')) {
6228: $toolstatus = $env{'environment.'.$envkey};
6229: $inststatus = $env{'environment.inststatus'};
6230: } else {
6231: if (ref($userenvref) eq 'HASH') {
6232: $toolstatus = $userenvref->{$envkey};
6233: $inststatus = $userenvref->{'inststatus'};
6234: } else {
6235: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6236: $toolstatus = $userenv{$envkey};
6237: $inststatus = $userenv{'inststatus'};
6238: }
6239: }
6240:
6241: if ($toolstatus ne '') {
6242: if ($toolstatus) {
6243: $access = 1;
6244: } else {
6245: $access = 0;
6246: }
6247: return $access;
6248: }
6249:
6250: my ($is_adv,%domdef);
6251: if (ref($is_advref) eq 'HASH') {
6252: $is_adv = $is_advref->{'is_adv'};
6253: } else {
6254: $is_adv = &is_advanced_user($udom,$uname);
6255: }
6256: if (ref($domdefref) eq 'HASH') {
6257: %domdef = %{$domdefref};
6258: } else {
6259: %domdef = &get_domain_defaults($udom);
6260: }
6261: if (ref($domdef{$tool}) eq 'HASH') {
6262: if ($is_adv) {
6263: if ($domdef{$tool}{'_LC_adv'} ne '') {
6264: if ($domdef{$tool}{'_LC_adv'}) {
6265: $access = 1;
6266: } else {
6267: $access = 0;
6268: }
6269: return $access;
6270: }
6271: }
6272: if ($inststatus ne '') {
6273: my ($hasaccess,$hasnoaccess);
6274: foreach my $affiliation (split(/:/,$inststatus)) {
6275: if ($domdef{$tool}{$affiliation} ne '') {
6276: if ($domdef{$tool}{$affiliation}) {
6277: $hasaccess = 1;
6278: } else {
6279: $hasnoaccess = 1;
6280: }
6281: }
6282: }
6283: if ($hasaccess || $hasnoaccess) {
6284: if ($hasaccess) {
6285: $access = 1;
6286: } elsif ($hasnoaccess) {
6287: $access = 0;
6288: }
6289: return $access;
6290: }
6291: } else {
6292: if ($domdef{$tool}{'default'} ne '') {
6293: if ($domdef{$tool}{'default'}) {
6294: $access = 1;
6295: } elsif ($domdef{$tool}{'default'} == 0) {
6296: $access = 0;
6297: }
6298: return $access;
6299: }
6300: }
6301: } else {
6302: if (($context eq 'tools') && ($tool ne 'webdav')) {
6303: $access = 1;
6304: } else {
6305: $access = 0;
6306: }
6307: return $access;
6308: }
6309: }
6310:
6311: sub is_course_owner {
6312: my ($cdom,$cnum,$udom,$uname) = @_;
6313: if (($udom eq '') || ($uname eq '')) {
6314: $udom = $env{'user.domain'};
6315: $uname = $env{'user.name'};
6316: }
6317: unless (($udom eq '') || ($uname eq '')) {
6318: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6319: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6320: return 1;
6321: } else {
6322: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6323: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6324: return 1;
6325: }
6326: }
6327: }
6328: }
6329: return;
6330: }
6331:
6332: sub is_advanced_user {
6333: my ($udom,$uname) = @_;
6334: if ($udom ne '' && $uname ne '') {
6335: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6336: if (wantarray) {
6337: return ($env{'user.adv'},$env{'user.author'});
6338: } else {
6339: return $env{'user.adv'};
6340: }
6341: }
6342: }
6343: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6344: my %allroles;
6345: my ($is_adv,$is_author);
6346: foreach my $role (keys(%roleshash)) {
6347: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6348: my $area = '/'.$tdomain.'/'.$trest;
6349: if ($sec ne '') {
6350: $area .= '/'.$sec;
6351: }
6352: if (($area ne '') && ($trole ne '')) {
6353: my $spec=$trole.'.'.$area;
6354: if ($trole =~ /^cr\//) {
6355: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6356: } elsif ($trole ne 'gr') {
6357: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6358: }
6359: if ($trole eq 'au') {
6360: $is_author = 1;
6361: }
6362: }
6363: }
6364: foreach my $role (keys(%allroles)) {
6365: last if ($is_adv);
6366: foreach my $item (split(/:/,$allroles{$role})) {
6367: if ($item ne '') {
6368: my ($privilege,$restrictions)=split(/&/,$item);
6369: if ($privilege eq 'adv') {
6370: $is_adv = 1;
6371: last;
6372: }
6373: }
6374: }
6375: }
6376: if (wantarray) {
6377: return ($is_adv,$is_author);
6378: }
6379: return $is_adv;
6380: }
6381:
6382: sub check_can_request {
6383: my ($dom,$can_request,$request_domains) = @_;
6384: my $canreq = 0;
6385: my ($types,$typename) = &Apache::loncommon::course_types();
6386: my @options = ('approval','validate','autolimit');
6387: my $optregex = join('|',@options);
6388: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6389: foreach my $type (@{$types}) {
6390: if (&usertools_access($env{'user.name'},
6391: $env{'user.domain'},
6392: $type,undef,'requestcourses')) {
6393: $canreq ++;
6394: if (ref($request_domains) eq 'HASH') {
6395: push(@{$request_domains->{$type}},$env{'user.domain'});
6396: }
6397: if ($dom eq $env{'user.domain'}) {
6398: $can_request->{$type} = 1;
6399: }
6400: }
6401: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6402: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6403: if (@curr > 0) {
6404: foreach my $item (@curr) {
6405: if (ref($request_domains) eq 'HASH') {
6406: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6407: if ($otherdom ne '') {
6408: if (ref($request_domains->{$type}) eq 'ARRAY') {
6409: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6410: push(@{$request_domains->{$type}},$otherdom);
6411: }
6412: } else {
6413: push(@{$request_domains->{$type}},$otherdom);
6414: }
6415: }
6416: }
6417: }
6418: unless($dom eq $env{'user.domain'}) {
6419: $canreq ++;
6420: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6421: $can_request->{$type} = 1;
6422: }
6423: }
6424: }
6425: }
6426: }
6427: }
6428: return $canreq;
6429: }
6430:
6431: # ---------------------------------------------- Custom access rule evaluation
6432:
6433: sub customaccess {
6434: my ($priv,$uri)=@_;
6435: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6436: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6437: $udom = &LONCAPA::clean_domain($udom);
6438: $ucrs = &LONCAPA::clean_username($ucrs);
6439: my $access=0;
6440: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6441: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6442: if ($type eq 'user') {
6443: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6444: my ($tdom,$tuname)=split(m{/},$scope);
6445: if ($tdom) {
6446: if ($tdom ne $env{'user.domain'}) { next; }
6447: }
6448: if ($tuname) {
6449: if ($tuname ne $env{'user.name'}) { next; }
6450: }
6451: $access=($effect eq 'allow');
6452: last;
6453: }
6454: } else {
6455: if ($role) {
6456: if ($role ne $urole) { next; }
6457: }
6458: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6459: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6460: if ($tdom) {
6461: if ($tdom ne $udom) { next; }
6462: }
6463: if ($tcrs) {
6464: if ($tcrs ne $ucrs) { next; }
6465: }
6466: if ($tsec) {
6467: if ($tsec ne $usec) { next; }
6468: }
6469: $access=($effect eq 'allow');
6470: last;
6471: }
6472: if ($realm eq '' && $role eq '') {
6473: $access=($effect eq 'allow');
6474: }
6475: }
6476: }
6477: return $access;
6478: }
6479:
6480: # ------------------------------------------------- Check for a user privilege
6481:
6482: sub allowed {
6483: my ($priv,$uri,$symb,$role)=@_;
6484: my $ver_orguri=$uri;
6485: $uri=&deversion($uri);
6486: my $orguri=$uri;
6487: $uri=&declutter($uri);
6488:
6489: if ($priv eq 'evb') {
6490: # Evade communication block restrictions for specified role in a course
6491: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6492: return $1;
6493: } else {
6494: return;
6495: }
6496: }
6497:
6498: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6499: # Free bre access to adm and meta resources
6500: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6501: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6502: && ($priv eq 'bre')) {
6503: return 'F';
6504: }
6505:
6506: # Free bre access to user's own portfolio contents
6507: my ($space,$domain,$name,@dir)=split('/',$uri);
6508: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6509: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6510: my %setters;
6511: my ($startblock,$endblock) =
6512: &Apache::loncommon::blockcheck(\%setters,'port');
6513: if ($startblock && $endblock) {
6514: return 'B';
6515: } else {
6516: return 'F';
6517: }
6518: }
6519:
6520: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6521: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6522: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6523: if (exists($env{'request.course.id'})) {
6524: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6525: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6526: if (($domain eq $cdom) && ($name eq $cnum)) {
6527: my $courseprivid=$env{'request.course.id'};
6528: $courseprivid=~s/\_/\//;
6529: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6530: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6531: return $1;
6532: } else {
6533: if ($env{'request.course.sec'}) {
6534: $courseprivid.='/'.$env{'request.course.sec'};
6535: }
6536: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6537: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6538: return $2;
6539: }
6540: }
6541: }
6542: }
6543: }
6544:
6545: # Free bre to public access
6546:
6547: if ($priv eq 'bre') {
6548: my $copyright=&metadata($uri,'copyright');
6549: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6550: return 'F';
6551: }
6552: if ($copyright eq 'priv') {
6553: $uri=~/([^\/]+)\/([^\/]+)\//;
6554: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6555: return '';
6556: }
6557: }
6558: if ($copyright eq 'domain') {
6559: $uri=~/([^\/]+)\/([^\/]+)\//;
6560: unless (($env{'user.domain'} eq $1) ||
6561: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6562: return '';
6563: }
6564: }
6565: if ($env{'request.role'}=~ /li\.\//) {
6566: # Library role, so allow browsing of resources in this domain.
6567: return 'F';
6568: }
6569: if ($copyright eq 'custom') {
6570: unless (&customaccess($priv,$uri)) { return ''; }
6571: }
6572: }
6573: # Domain coordinator is trying to create a course
6574: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6575: # uri is the requested domain in this case.
6576: # comparison to 'request.role.domain' shows if the user has selected
6577: # a role of dc for the domain in question.
6578: return 'F' if ($uri eq $env{'request.role.domain'});
6579: }
6580:
6581: my $thisallowed='';
6582: my $statecond=0;
6583: my $courseprivid='';
6584:
6585: my $ownaccess;
6586: # Community Coordinator or Assistant Co-author browsing resource space.
6587: if (($priv eq 'bro') && ($env{'user.author'})) {
6588: if ($uri eq '') {
6589: $ownaccess = 1;
6590: } else {
6591: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6592: my $udom = $env{'user.domain'};
6593: my $uname = $env{'user.name'};
6594: if ($uri =~ m{^\Q$udom\E/?$}) {
6595: $ownaccess = 1;
6596: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6597: unless ($uri =~ m{\.\./}) {
6598: $ownaccess = 1;
6599: }
6600: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6601: my $now = time;
6602: if ($uri =~ m{^([^/]+)/?$}) {
6603: my $adom = $1;
6604: foreach my $key (keys(%env)) {
6605: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6606: my ($start,$end) = split('.',$env{$key});
6607: if (($now >= $start) && (!$end || $end < $now)) {
6608: $ownaccess = 1;
6609: last;
6610: }
6611: }
6612: }
6613: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6614: my $adom = $1;
6615: my $aname = $2;
6616: foreach my $role ('ca','aa') {
6617: if ($env{"user.role.$role./$adom/$aname"}) {
6618: my ($start,$end) =
6619: split('.',$env{"user.role.$role./$adom/$aname"});
6620: if (($now >= $start) && (!$end || $end < $now)) {
6621: $ownaccess = 1;
6622: last;
6623: }
6624: }
6625: }
6626: }
6627: }
6628: }
6629: }
6630: }
6631:
6632: # Course
6633:
6634: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6635: unless (($priv eq 'bro') && (!$ownaccess)) {
6636: $thisallowed.=$1;
6637: }
6638: }
6639:
6640: # Domain
6641:
6642: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6643: =~/\Q$priv\E\&([^\:]*)/) {
6644: unless (($priv eq 'bro') && (!$ownaccess)) {
6645: $thisallowed.=$1;
6646: }
6647: }
6648:
6649: # User who is not author or co-author might still be able to edit
6650: # resource of an author in the domain (e.g., if Domain Coordinator).
6651: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6652: (&allowed('mdc',$env{'request.course.id'}))) {
6653: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6654: $thisallowed.=$1;
6655: }
6656: }
6657:
6658: # Course: uri itself is a course
6659: my $courseuri=$uri;
6660: $courseuri=~s/\_(\d)/\/$1/;
6661: $courseuri=~s/^([^\/])/\/$1/;
6662:
6663: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6664: =~/\Q$priv\E\&([^\:]*)/) {
6665: unless (($priv eq 'bro') && (!$ownaccess)) {
6666: $thisallowed.=$1;
6667: }
6668: }
6669:
6670: # URI is an uploaded document for this course, default permissions don't matter
6671: # not allowing 'edit' access (editupload) to uploaded course docs
6672: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6673: $thisallowed='';
6674: my ($match)=&is_on_map($uri);
6675: if ($match) {
6676: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6677: =~/\Q$priv\E\&([^\:]*)/) {
6678: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6679: if (@blockers > 0) {
6680: $thisallowed = 'B';
6681: } else {
6682: $thisallowed.=$1;
6683: }
6684: }
6685: } else {
6686: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6687: if ($refuri) {
6688: if ($refuri =~ m|^/adm/|) {
6689: $thisallowed='F';
6690: } else {
6691: $refuri=&declutter($refuri);
6692: my ($match) = &is_on_map($refuri);
6693: if ($match) {
6694: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6695: if (@blockers > 0) {
6696: $thisallowed = 'B';
6697: } else {
6698: $thisallowed='F';
6699: }
6700: }
6701: }
6702: }
6703: }
6704: }
6705:
6706: if ($priv eq 'bre'
6707: && $thisallowed ne 'F'
6708: && $thisallowed ne '2'
6709: && &is_portfolio_url($uri)) {
6710: $thisallowed = &portfolio_access($uri);
6711: }
6712:
6713: # Full access at system, domain or course-wide level? Exit.
6714: if ($thisallowed=~/F/) {
6715: return 'F';
6716: }
6717:
6718: # If this is generating or modifying users, exit with special codes
6719:
6720: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6721: if (($priv eq 'cca') || ($priv eq 'caa')) {
6722: my ($audom,$auname)=split('/',$uri);
6723: # no author name given, so this just checks on the general right to make a co-author in this domain
6724: unless ($auname) { return $thisallowed; }
6725: # an author name is given, so we are about to actually make a co-author for a certain account
6726: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6727: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6728: ($audom ne $env{'request.role.domain'}))) { return ''; }
6729: }
6730: return $thisallowed;
6731: }
6732: #
6733: # Gathered so far: system, domain and course wide privileges
6734: #
6735: # Course: See if uri or referer is an individual resource that is part of
6736: # the course
6737:
6738: if ($env{'request.course.id'}) {
6739:
6740: $courseprivid=$env{'request.course.id'};
6741: if ($env{'request.course.sec'}) {
6742: $courseprivid.='/'.$env{'request.course.sec'};
6743: }
6744: $courseprivid=~s/\_/\//;
6745: my $checkreferer=1;
6746: my ($match,$cond)=&is_on_map($uri);
6747: if ($match) {
6748: $statecond=$cond;
6749: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6750: =~/\Q$priv\E\&([^\:]*)/) {
6751: my $value = $1;
6752: if ($priv eq 'bre') {
6753: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6754: if (@blockers > 0) {
6755: $thisallowed = 'B';
6756: } else {
6757: $thisallowed.=$value;
6758: }
6759: } else {
6760: $thisallowed.=$value;
6761: }
6762: $checkreferer=0;
6763: }
6764: }
6765:
6766: if ($checkreferer) {
6767: my $refuri=$env{'httpref.'.$orguri};
6768: unless ($refuri) {
6769: foreach my $key (keys(%env)) {
6770: if ($key=~/^httpref\..*\*/) {
6771: my $pattern=$key;
6772: $pattern=~s/^httpref\.\/res\///;
6773: $pattern=~s/\*/\[\^\/\]\+/g;
6774: $pattern=~s/\//\\\//g;
6775: if ($orguri=~/$pattern/) {
6776: $refuri=$env{$key};
6777: }
6778: }
6779: }
6780: }
6781:
6782: if ($refuri) {
6783: $refuri=&declutter($refuri);
6784: my ($match,$cond)=&is_on_map($refuri);
6785: if ($match) {
6786: my $refstatecond=$cond;
6787: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6788: =~/\Q$priv\E\&([^\:]*)/) {
6789: my $value = $1;
6790: if ($priv eq 'bre') {
6791: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6792: if (@blockers > 0) {
6793: $thisallowed = 'B';
6794: } else {
6795: $thisallowed.=$value;
6796: }
6797: } else {
6798: $thisallowed.=$value;
6799: }
6800: $uri=$refuri;
6801: $statecond=$refstatecond;
6802: }
6803: }
6804: }
6805: }
6806: }
6807:
6808: #
6809: # Gathered now: all privileges that could apply, and condition number
6810: #
6811: #
6812: # Full or no access?
6813: #
6814:
6815: if ($thisallowed=~/F/) {
6816: return 'F';
6817: }
6818:
6819: unless ($thisallowed) {
6820: return '';
6821: }
6822:
6823: # Restrictions exist, deal with them
6824: #
6825: # C:according to course preferences
6826: # R:according to resource settings
6827: # L:unless locked
6828: # X:according to user session state
6829: #
6830:
6831: # Possibly locked functionality, check all courses
6832: # Locks might take effect only after 10 minutes cache expiration for other
6833: # courses, and 2 minutes for current course
6834:
6835: my $envkey;
6836: if ($thisallowed=~/L/) {
6837: foreach $envkey (keys(%env)) {
6838: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6839: my $courseid=$2;
6840: my $roleid=$1.'.'.$2;
6841: $courseid=~s/^\///;
6842: my $expiretime=600;
6843: if ($env{'request.role'} eq $roleid) {
6844: $expiretime=120;
6845: }
6846: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6847: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6848: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6849: &coursedescription($courseid,{'freshen_cache' => 1});
6850: }
6851: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6852: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6853: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6854: &log($env{'user.domain'},$env{'user.name'},
6855: $env{'user.home'},
6856: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6857: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6858: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6859: return '';
6860: }
6861: }
6862: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6863: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6864: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6865: &log($env{'user.domain'},$env{'user.name'},
6866: $env{'user.home'},
6867: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6868: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6869: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6870: return '';
6871: }
6872: }
6873: }
6874: }
6875: }
6876:
6877: #
6878: # Rest of the restrictions depend on selected course
6879: #
6880:
6881: unless ($env{'request.course.id'}) {
6882: if ($thisallowed eq 'A') {
6883: return 'A';
6884: } elsif ($thisallowed eq 'B') {
6885: return 'B';
6886: } else {
6887: return '1';
6888: }
6889: }
6890:
6891: #
6892: # Now user is definitely in a course
6893: #
6894:
6895:
6896: # Course preferences
6897:
6898: if ($thisallowed=~/C/) {
6899: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6900: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6901: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6902: =~/\Q$rolecode\E/) {
6903: if (($priv ne 'pch') && ($priv ne 'plc')) {
6904: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6905: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6906: $env{'request.course.id'});
6907: }
6908: return '';
6909: }
6910:
6911: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6912: =~/\Q$unamedom\E/) {
6913: if (($priv ne 'pch') && ($priv ne 'plc')) {
6914: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6915: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6916: $env{'request.course.id'});
6917: }
6918: return '';
6919: }
6920: }
6921:
6922: # Resource preferences
6923:
6924: if ($thisallowed=~/R/) {
6925: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6926: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6927: if (($priv ne 'pch') && ($priv ne 'plc')) {
6928: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6929: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6930: }
6931: return '';
6932: }
6933: }
6934:
6935: # Restricted by state or randomout?
6936:
6937: if ($thisallowed=~/X/) {
6938: if ($env{'acc.randomout'}) {
6939: if (!$symb) { $symb=&symbread($uri,1); }
6940: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6941: return '';
6942: }
6943: }
6944: if (&condval($statecond)) {
6945: return '2';
6946: } else {
6947: return '';
6948: }
6949: }
6950:
6951: if ($thisallowed eq 'A') {
6952: return 'A';
6953: } elsif ($thisallowed eq 'B') {
6954: return 'B';
6955: }
6956: return 'F';
6957: }
6958:
6959: # ------------------------------------------- Check construction space access
6960:
6961: sub constructaccess {
6962: my ($url,$setpriv)=@_;
6963:
6964: # We do not allow editing of previous versions of files
6965: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6966:
6967: # Get username and domain from URL
6968: my ($ownername,$ownerdomain,$ownerhome);
6969:
6970: ($ownerdomain,$ownername) =
6971: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6972:
6973: # The URL does not really point to any authorspace, forget it
6974: unless (($ownername) && ($ownerdomain)) { return ''; }
6975:
6976: # Now we need to see if the user has access to the authorspace of
6977: # $ownername at $ownerdomain
6978:
6979: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6980: # Real author for this?
6981: $ownerhome = $env{'user.home'};
6982: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6983: return ($ownername,$ownerdomain,$ownerhome);
6984: }
6985: } else {
6986: # Co-author for this?
6987: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6988: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6989: $ownerhome = &homeserver($ownername,$ownerdomain);
6990: return ($ownername,$ownerdomain,$ownerhome);
6991: }
6992: }
6993:
6994: # We don't have any access right now. If we are not possibly going to do anything about this,
6995: # we might as well leave
6996: unless ($setpriv) { return ''; }
6997:
6998: # Backdoor access?
6999: my $allowed=&allowed('eco',$ownerdomain);
7000: # Nope
7001: unless ($allowed) { return ''; }
7002: # Looks like we may have access, but could be locked by the owner of the construction space
7003: if ($allowed eq 'U') {
7004: my %blocked=&get('environment',['domcoord.author'],
7005: $ownerdomain,$ownername);
7006: # Is blocked by owner
7007: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7008: }
7009: if (($allowed eq 'F') || ($allowed eq 'U')) {
7010: # Grant temporary access
7011: my $then=$env{'user.login.time'};
7012: my $update=$env{'user.update.time'};
7013: if (!$update) { $update = $then; }
7014: my $refresh=$env{'user.refresh.time'};
7015: if (!$refresh) { $refresh = $update; }
7016: my $now = time;
7017: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7018: $now,'ca','constructaccess');
7019: $ownerhome = &homeserver($ownername,$ownerdomain);
7020: return($ownername,$ownerdomain,$ownerhome);
7021: }
7022: # No business here
7023: return '';
7024: }
7025:
7026: sub get_comm_blocks {
7027: my ($cdom,$cnum) = @_;
7028: if ($cdom eq '' || $cnum eq '') {
7029: return unless ($env{'request.course.id'});
7030: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7031: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7032: }
7033: my %commblocks;
7034: my $hashid=$cdom.'_'.$cnum;
7035: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7036: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7037: %commblocks = %{$blocksref};
7038: } else {
7039: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7040: my $cachetime = 600;
7041: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7042: }
7043: return %commblocks;
7044: }
7045:
7046: sub has_comm_blocking {
7047: my ($priv,$symb,$uri,$blocks) = @_;
7048: return unless ($env{'request.course.id'});
7049: return unless ($priv eq 'bre');
7050: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7051: my %commblocks;
7052: if (ref($blocks) eq 'HASH') {
7053: %commblocks = %{$blocks};
7054: } else {
7055: %commblocks = &get_comm_blocks();
7056: }
7057: return unless (keys(%commblocks) > 0);
7058: if (!$symb) { $symb=&symbread($uri,1); }
7059: my ($map,$resid,undef)=&decode_symb($symb);
7060: my %tocheck = (
7061: maps => $map,
7062: resources => $symb,
7063: );
7064: my @blockers;
7065: my $now = time;
7066: my $navmap = Apache::lonnavmaps::navmap->new();
7067: foreach my $block (keys(%commblocks)) {
7068: if ($block =~ /^(\d+)____(\d+)$/) {
7069: my ($start,$end) = ($1,$2);
7070: if ($start <= $now && $end >= $now) {
7071: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7072: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7073: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7074: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
7075: unless (grep(/^\Q$block\E$/,@blockers)) {
7076: push(@blockers,$block);
7077: }
7078: }
7079: }
7080: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7081: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
7082: unless (grep(/^\Q$block\E$/,@blockers)) {
7083: push(@blockers,$block);
7084: }
7085: }
7086: }
7087: }
7088: }
7089: }
7090: } elsif ($block =~ /^firstaccess____(.+)$/) {
7091: my $item = $1;
7092: my @to_test;
7093: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7094: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7095: my $check_interval;
7096: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
7097: my @interval;
7098: my $type = 'map';
7099: if ($item eq 'course') {
7100: $type = 'course';
7101: @interval=&EXT("resource.0.interval");
7102: } else {
7103: if ($item =~ /___\d+___/) {
7104: $type = 'resource';
7105: @interval=&EXT("resource.0.interval",$item);
7106: if (ref($navmap)) {
7107: my $res = $navmap->getBySymb($item);
7108: push(@to_test,$res);
7109: }
7110: } else {
7111: my $mapsymb = &symbread($item,1);
7112: if ($mapsymb) {
7113: if (ref($navmap)) {
7114: my $mapres = $navmap->getBySymb($mapsymb);
7115: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7116: foreach my $res (@to_test) {
7117: my $symb = $res->symb();
7118: next if ($symb eq $mapsymb);
7119: if ($symb ne '') {
7120: @interval=&EXT("resource.0.interval",$symb);
7121: last;
7122: }
7123: }
7124: }
7125: }
7126: }
7127: }
7128: if ($interval[0] =~ /\d+/) {
7129: my $first_access;
7130: if ($type eq 'resource') {
7131: $first_access=&get_first_access($interval[1],$item);
7132: } elsif ($type eq 'map') {
7133: $first_access=&get_first_access($interval[1],undef,$item);
7134: } else {
7135: $first_access=&get_first_access($interval[1]);
7136: }
7137: if ($first_access) {
7138: my $timesup = $first_access+$interval[0];
7139: if ($timesup > $now) {
7140: foreach my $res (@to_test) {
7141: if ($res->is_problem()) {
7142: if ($res->completable()) {
7143: unless (grep(/^\Q$block\E$/,@blockers)) {
7144: push(@blockers,$block);
7145: }
7146: last;
7147: }
7148: }
7149: }
7150: }
7151: }
7152: }
7153: }
7154: }
7155: }
7156: }
7157: }
7158: return @blockers;
7159: }
7160:
7161: sub check_docs_block {
7162: my ($docsblock,$tocheck) =@_;
7163: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7164: return;
7165: }
7166: if (ref($docsblock->{'maps'}) eq 'HASH') {
7167: if ($tocheck->{'maps'}) {
7168: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7169: return 1;
7170: }
7171: }
7172: }
7173: if (ref($docsblock->{'resources'}) eq 'HASH') {
7174: if ($tocheck->{'resources'}) {
7175: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7176: return 1;
7177: }
7178: }
7179: }
7180: return;
7181: }
7182:
7183: #
7184: # Removes the versino from a URI and
7185: # splits it in to its filename and path to the filename.
7186: # Seems like File::Basename could have done this more clearly.
7187: # Parameters:
7188: # $uri - input URI
7189: # Returns:
7190: # Two element list consisting of
7191: # $pathname - the URI up to and excluding the trailing /
7192: # $filename - The part of the URI following the last /
7193: # NOTE:
7194: # Another realization of this is simply:
7195: # use File::Basename;
7196: # ...
7197: # $uri = shift;
7198: # $filename = basename($uri);
7199: # $path = dirname($uri);
7200: # return ($filename, $path);
7201: #
7202: # The implementation below is probably faster however.
7203: #
7204: sub split_uri_for_cond {
7205: my $uri=&deversion(&declutter(shift));
7206: my @uriparts=split(/\//,$uri);
7207: my $filename=pop(@uriparts);
7208: my $pathname=join('/',@uriparts);
7209: return ($pathname,$filename);
7210: }
7211: # --------------------------------------------------- Is a resource on the map?
7212:
7213: sub is_on_map {
7214: my ($pathname,$filename) = &split_uri_for_cond(shift);
7215: #Trying to find the conditional for the file
7216: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7217: /\&\Q$filename\E\:([\d\|]+)\&/);
7218: if ($match) {
7219: return (1,$1);
7220: } else {
7221: return (0,0);
7222: }
7223: }
7224:
7225: # --------------------------------------------------------- Get symb from alias
7226:
7227: sub get_symb_from_alias {
7228: my $symb=shift;
7229: my ($map,$resid,$url)=&decode_symb($symb);
7230: # Already is a symb
7231: if ($url) { return $symb; }
7232: # Must be an alias
7233: my $aliassymb='';
7234: my %bighash;
7235: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7236: &GDBM_READER(),0640)) {
7237: my $rid=$bighash{'mapalias_'.$symb};
7238: if ($rid) {
7239: my ($mapid,$resid)=split(/\./,$rid);
7240: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7241: $resid,$bighash{'src_'.$rid});
7242: }
7243: untie %bighash;
7244: }
7245: return $aliassymb;
7246: }
7247:
7248: # ----------------------------------------------------------------- Define Role
7249:
7250: sub definerole {
7251: if (allowed('mcr','/')) {
7252: my ($rolename,$sysrole,$domrole,$courole)=@_;
7253: foreach my $role (split(':',$sysrole)) {
7254: my ($crole,$cqual)=split(/\&/,$role);
7255: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7256: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7257: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7258: return "refused:s:$crole&$cqual";
7259: }
7260: }
7261: }
7262: foreach my $role (split(':',$domrole)) {
7263: my ($crole,$cqual)=split(/\&/,$role);
7264: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7265: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7266: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7267: return "refused:d:$crole&$cqual";
7268: }
7269: }
7270: }
7271: foreach my $role (split(':',$courole)) {
7272: my ($crole,$cqual)=split(/\&/,$role);
7273: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7274: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7275: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7276: return "refused:c:$crole&$cqual";
7277: }
7278: }
7279: }
7280: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7281: "$env{'user.domain'}:$env{'user.name'}:".
7282: "rolesdef_$rolename=".
7283: escape($sysrole.'_'.$domrole.'_'.$courole);
7284: return reply($command,$env{'user.home'});
7285: } else {
7286: return 'refused';
7287: }
7288: }
7289:
7290: # ---------------- Make a metadata query against the network of library servers
7291:
7292: sub metadata_query {
7293: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7294: my %rhash;
7295: my %libserv = &all_library();
7296: my @server_list = (defined($server_array) ? @$server_array
7297: : keys(%libserv) );
7298: for my $server (@server_list) {
7299: my $domains = '';
7300: if (ref($domains_hash) eq 'HASH') {
7301: $domains = $domains_hash->{$server};
7302: }
7303: unless ($custom or $customshow) {
7304: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7305: $rhash{$server}=$reply;
7306: }
7307: else {
7308: my $reply=&reply("querysend:".&escape($query).':'.
7309: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7310: $server);
7311: $rhash{$server}=$reply;
7312: }
7313: }
7314: return \%rhash;
7315: }
7316:
7317: # ----------------------------------------- Send log queries and wait for reply
7318:
7319: sub log_query {
7320: my ($uname,$udom,$query,%filters)=@_;
7321: my $uhome=&homeserver($uname,$udom);
7322: if ($uhome eq 'no_host') { return 'error: no_host'; }
7323: my $uhost=&hostname($uhome);
7324: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7325: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7326: $uhome);
7327: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7328: return get_query_reply($queryid);
7329: }
7330:
7331: # -------------------------- Update MySQL table for portfolio file
7332:
7333: sub update_portfolio_table {
7334: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7335: if ($group ne '') {
7336: $file_name =~s /^\Q$group\E//;
7337: }
7338: my $homeserver = &homeserver($uname,$udom);
7339: my $queryid=
7340: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7341: ':'.&escape($file_name).':'.$action,$homeserver);
7342: my $reply = &get_query_reply($queryid);
7343: return $reply;
7344: }
7345:
7346: # -------------------------- Update MySQL allusers table
7347:
7348: sub update_allusers_table {
7349: my ($uname,$udom,$names) = @_;
7350: my $homeserver = &homeserver($uname,$udom);
7351: my $queryid=
7352: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7353: 'lastname='.&escape($names->{'lastname'}).'%%'.
7354: 'firstname='.&escape($names->{'firstname'}).'%%'.
7355: 'middlename='.&escape($names->{'middlename'}).'%%'.
7356: 'generation='.&escape($names->{'generation'}).'%%'.
7357: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7358: 'id='.&escape($names->{'id'}),$homeserver);
7359: return;
7360: }
7361:
7362: # ------- Request retrieval of institutional classlists for course(s)
7363:
7364: sub fetch_enrollment_query {
7365: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7366: my $homeserver;
7367: my $maxtries = 1;
7368: if ($context eq 'automated') {
7369: $homeserver = $perlvar{'lonHostID'};
7370: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7371: } else {
7372: $homeserver = &homeserver($cnum,$dom);
7373: }
7374: my $host=&hostname($homeserver);
7375: my $cmd = '';
7376: foreach my $affiliate (keys(%{$affiliatesref})) {
7377: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7378: }
7379: $cmd =~ s/%%$//;
7380: $cmd = &escape($cmd);
7381: my $query = 'fetchenrollment';
7382: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7383: unless ($queryid=~/^\Q$host\E\_/) {
7384: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7385: return 'error: '.$queryid;
7386: }
7387: my $reply = &get_query_reply($queryid);
7388: my $tries = 1;
7389: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7390: $reply = &get_query_reply($queryid);
7391: $tries ++;
7392: }
7393: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7394: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7395: } else {
7396: my @responses = split(/:/,$reply);
7397: if ($homeserver eq $perlvar{'lonHostID'}) {
7398: foreach my $line (@responses) {
7399: my ($key,$value) = split(/=/,$line,2);
7400: $$replyref{$key} = $value;
7401: }
7402: } else {
7403: my $pathname = LONCAPA::tempdir();
7404: foreach my $line (@responses) {
7405: my ($key,$value) = split(/=/,$line);
7406: $$replyref{$key} = $value;
7407: if ($value > 0) {
7408: foreach my $item (@{$$affiliatesref{$key}}) {
7409: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7410: my $destname = $pathname.'/'.$filename;
7411: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7412: if ($xml_classlist =~ /^error/) {
7413: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7414: } else {
7415: if ( open(FILE,">$destname") ) {
7416: print FILE &unescape($xml_classlist);
7417: close(FILE);
7418: } else {
7419: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7420: }
7421: }
7422: }
7423: }
7424: }
7425: }
7426: return 'ok';
7427: }
7428: return 'error';
7429: }
7430:
7431: sub get_query_reply {
7432: my $queryid=shift;
7433: my $replyfile=LONCAPA::tempdir().$queryid;
7434: my $reply='';
7435: for (1..100) {
7436: sleep 2;
7437: if (-e $replyfile.'.end') {
7438: if (open(my $fh,$replyfile)) {
7439: $reply = join('',<$fh>);
7440: close($fh);
7441: } else { return 'error: reply_file_error'; }
7442: return &unescape($reply);
7443: }
7444: }
7445: return 'timeout:'.$queryid;
7446: }
7447:
7448: sub courselog_query {
7449: #
7450: # possible filters:
7451: # url: url or symb
7452: # username
7453: # domain
7454: # action: view, submit, grade
7455: # start: timestamp
7456: # end: timestamp
7457: #
7458: my (%filters)=@_;
7459: unless ($env{'request.course.id'}) { return 'no_course'; }
7460: if ($filters{'url'}) {
7461: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7462: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7463: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7464: }
7465: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7466: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7467: return &log_query($cname,$cdom,'courselog',%filters);
7468: }
7469:
7470: sub userlog_query {
7471: #
7472: # possible filters:
7473: # action: log check role
7474: # start: timestamp
7475: # end: timestamp
7476: #
7477: my ($uname,$udom,%filters)=@_;
7478: return &log_query($uname,$udom,'userlog',%filters);
7479: }
7480:
7481: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7482:
7483: sub auto_run {
7484: my ($cnum,$cdom) = @_;
7485: my $response = 0;
7486: my $settings;
7487: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7488: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7489: $settings = $domconfig{'autoenroll'};
7490: if ($settings->{'run'} eq '1') {
7491: $response = 1;
7492: }
7493: } else {
7494: my $homeserver;
7495: if (&is_course($cdom,$cnum)) {
7496: $homeserver = &homeserver($cnum,$cdom);
7497: } else {
7498: $homeserver = &domain($cdom,'primary');
7499: }
7500: if ($homeserver ne 'no_host') {
7501: $response = &reply('autorun:'.$cdom,$homeserver);
7502: }
7503: }
7504: return $response;
7505: }
7506:
7507: sub auto_get_sections {
7508: my ($cnum,$cdom,$inst_coursecode) = @_;
7509: my $homeserver;
7510: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7511: $homeserver = &homeserver($cnum,$cdom);
7512: }
7513: if (!defined($homeserver)) {
7514: if ($cdom =~ /^$match_domain$/) {
7515: $homeserver = &domain($cdom,'primary');
7516: }
7517: }
7518: my @secs;
7519: if (defined($homeserver)) {
7520: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7521: unless ($response eq 'refused') {
7522: @secs = split(/:/,$response);
7523: }
7524: }
7525: return @secs;
7526: }
7527:
7528: sub auto_new_course {
7529: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7530: my $homeserver = &homeserver($cnum,$cdom);
7531: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7532: return $response;
7533: }
7534:
7535: sub auto_validate_courseID {
7536: my ($cnum,$cdom,$inst_course_id) = @_;
7537: my $homeserver = &homeserver($cnum,$cdom);
7538: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7539: return $response;
7540: }
7541:
7542: sub auto_validate_instcode {
7543: my ($cnum,$cdom,$instcode,$owner) = @_;
7544: my ($homeserver,$response);
7545: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7546: $homeserver = &homeserver($cnum,$cdom);
7547: }
7548: if (!defined($homeserver)) {
7549: if ($cdom =~ /^$match_domain$/) {
7550: $homeserver = &domain($cdom,'primary');
7551: }
7552: }
7553: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7554: &escape($instcode).':'.&escape($owner),$homeserver));
7555: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7556: return ($outcome,$description,$defaultcredits);
7557: }
7558:
7559: sub auto_create_password {
7560: my ($cnum,$cdom,$authparam,$udom) = @_;
7561: my ($homeserver,$response);
7562: my $create_passwd = 0;
7563: my $authchk = '';
7564: if ($udom =~ /^$match_domain$/) {
7565: $homeserver = &domain($udom,'primary');
7566: }
7567: if ($homeserver eq '') {
7568: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7569: $homeserver = &homeserver($cnum,$cdom);
7570: }
7571: }
7572: if ($homeserver eq '') {
7573: $authchk = 'nodomain';
7574: } else {
7575: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7576: if ($response eq 'refused') {
7577: $authchk = 'refused';
7578: } else {
7579: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7580: }
7581: }
7582: return ($authparam,$create_passwd,$authchk);
7583: }
7584:
7585: sub auto_photo_permission {
7586: my ($cnum,$cdom,$students) = @_;
7587: my $homeserver = &homeserver($cnum,$cdom);
7588: my ($outcome,$perm_reqd,$conditions) =
7589: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7590: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7591: return (undef,undef);
7592: }
7593: return ($outcome,$perm_reqd,$conditions);
7594: }
7595:
7596: sub auto_checkphotos {
7597: my ($uname,$udom,$pid) = @_;
7598: my $homeserver = &homeserver($uname,$udom);
7599: my ($result,$resulttype);
7600: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7601: &escape($uname).':'.&escape($pid),
7602: $homeserver));
7603: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7604: return (undef,undef);
7605: }
7606: if ($outcome) {
7607: ($result,$resulttype) = split(/:/,$outcome);
7608: }
7609: return ($result,$resulttype);
7610: }
7611:
7612: sub auto_photochoice {
7613: my ($cnum,$cdom) = @_;
7614: my $homeserver = &homeserver($cnum,$cdom);
7615: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7616: &escape($cdom),
7617: $homeserver)));
7618: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7619: return (undef,undef);
7620: }
7621: return ($update,$comment);
7622: }
7623:
7624: sub auto_photoupdate {
7625: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7626: my $homeserver = &homeserver($cnum,$dom);
7627: my $host=&hostname($homeserver);
7628: my $cmd = '';
7629: my $maxtries = 1;
7630: foreach my $affiliate (keys(%{$affiliatesref})) {
7631: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7632: }
7633: $cmd =~ s/%%$//;
7634: $cmd = &escape($cmd);
7635: my $query = 'institutionalphotos';
7636: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7637: unless ($queryid=~/^\Q$host\E\_/) {
7638: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7639: return 'error: '.$queryid;
7640: }
7641: my $reply = &get_query_reply($queryid);
7642: my $tries = 1;
7643: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7644: $reply = &get_query_reply($queryid);
7645: $tries ++;
7646: }
7647: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7648: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7649: } else {
7650: my @responses = split(/:/,$reply);
7651: my $outcome = shift(@responses);
7652: foreach my $item (@responses) {
7653: my ($key,$value) = split(/=/,$item);
7654: $$photo{$key} = $value;
7655: }
7656: return $outcome;
7657: }
7658: return 'error';
7659: }
7660:
7661: sub auto_instcode_format {
7662: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7663: $cat_order) = @_;
7664: my $courses = '';
7665: my @homeservers;
7666: if ($caller eq 'global') {
7667: my %servers = &get_servers($codedom,'library');
7668: foreach my $tryserver (keys(%servers)) {
7669: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7670: push(@homeservers,$tryserver);
7671: }
7672: }
7673: } elsif ($caller eq 'requests') {
7674: if ($codedom =~ /^$match_domain$/) {
7675: my $chome = &domain($codedom,'primary');
7676: unless ($chome eq 'no_host') {
7677: push(@homeservers,$chome);
7678: }
7679: }
7680: } else {
7681: push(@homeservers,&homeserver($caller,$codedom));
7682: }
7683: foreach my $code (keys(%{$instcodes})) {
7684: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7685: }
7686: chop($courses);
7687: my $ok_response = 0;
7688: my $response;
7689: while (@homeservers > 0 && $ok_response == 0) {
7690: my $server = shift(@homeservers);
7691: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7692: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7693: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7694: split(/:/,$response);
7695: %{$codes} = (%{$codes},&str2hash($codes_str));
7696: push(@{$codetitles},&str2array($codetitles_str));
7697: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7698: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7699: $ok_response = 1;
7700: }
7701: }
7702: if ($ok_response) {
7703: return 'ok';
7704: } else {
7705: return $response;
7706: }
7707: }
7708:
7709: sub auto_instcode_defaults {
7710: my ($domain,$returnhash,$code_order) = @_;
7711: my @homeservers;
7712:
7713: my %servers = &get_servers($domain,'library');
7714: foreach my $tryserver (keys(%servers)) {
7715: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7716: push(@homeservers,$tryserver);
7717: }
7718: }
7719:
7720: my $response;
7721: foreach my $server (@homeservers) {
7722: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7723: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7724:
7725: foreach my $pair (split(/\&/,$response)) {
7726: my ($name,$value)=split(/\=/,$pair);
7727: if ($name eq 'code_order') {
7728: @{$code_order} = split(/\&/,&unescape($value));
7729: } else {
7730: $returnhash->{&unescape($name)}=&unescape($value);
7731: }
7732: }
7733: return 'ok';
7734: }
7735:
7736: return $response;
7737: }
7738:
7739: sub auto_possible_instcodes {
7740: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7741: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7742: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7743: return;
7744: }
7745: my (@homeservers,$uhome);
7746: if (defined(&domain($domain,'primary'))) {
7747: $uhome=&domain($domain,'primary');
7748: push(@homeservers,&domain($domain,'primary'));
7749: } else {
7750: my %servers = &get_servers($domain,'library');
7751: foreach my $tryserver (keys(%servers)) {
7752: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7753: push(@homeservers,$tryserver);
7754: }
7755: }
7756: }
7757: my $response;
7758: foreach my $server (@homeservers) {
7759: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7760: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7761: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7762: split(':',$response);
7763: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7764: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7765: foreach my $item (split('&',$cat_title)) {
7766: my ($name,$value)=split('=',$item);
7767: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7768: }
7769: foreach my $item (split('&',$cat_order)) {
7770: my ($name,$value)=split('=',$item);
7771: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7772: }
7773: return 'ok';
7774: }
7775: return $response;
7776: }
7777:
7778: sub auto_courserequest_checks {
7779: my ($dom) = @_;
7780: my ($homeserver,%validations);
7781: if ($dom =~ /^$match_domain$/) {
7782: $homeserver = &domain($dom,'primary');
7783: }
7784: unless ($homeserver eq 'no_host') {
7785: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7786: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7787: my @items = split(/&/,$response);
7788: foreach my $item (@items) {
7789: my ($key,$value) = split('=',$item);
7790: $validations{&unescape($key)} = &thaw_unescape($value);
7791: }
7792: }
7793: }
7794: return %validations;
7795: }
7796:
7797: sub auto_courserequest_validation {
7798: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7799: my ($homeserver,$response);
7800: if ($dom =~ /^$match_domain$/) {
7801: $homeserver = &domain($dom,'primary');
7802: }
7803: unless ($homeserver eq 'no_host') {
7804:
7805: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7806: ':'.&escape($crstype).':'.&escape($inststatuslist).
7807: ':'.&escape($instcode).':'.&escape($instseclist),
7808: $homeserver));
7809: }
7810: return $response;
7811: }
7812:
7813: sub auto_validate_class_sec {
7814: my ($cdom,$cnum,$owners,$inst_class) = @_;
7815: my $homeserver = &homeserver($cnum,$cdom);
7816: my $ownerlist;
7817: if (ref($owners) eq 'ARRAY') {
7818: $ownerlist = join(',',@{$owners});
7819: } else {
7820: $ownerlist = $owners;
7821: }
7822: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7823: &escape($ownerlist).':'.$cdom,$homeserver);
7824: return $response;
7825: }
7826:
7827: # ------------------------------------------------------- Course Group routines
7828:
7829: sub get_coursegroups {
7830: my ($cdom,$cnum,$group,$namespace) = @_;
7831: return(&dump($namespace,$cdom,$cnum,$group));
7832: }
7833:
7834: sub modify_coursegroup {
7835: my ($cdom,$cnum,$groupsettings) = @_;
7836: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7837: }
7838:
7839: sub toggle_coursegroup_status {
7840: my ($cdom,$cnum,$group,$action) = @_;
7841: my ($from_namespace,$to_namespace);
7842: if ($action eq 'delete') {
7843: $from_namespace = 'coursegroups';
7844: $to_namespace = 'deleted_groups';
7845: } else {
7846: $from_namespace = 'deleted_groups';
7847: $to_namespace = 'coursegroups';
7848: }
7849: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7850: if (my $tmp = &error(%curr_group)) {
7851: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7852: return ('read error',$tmp);
7853: } else {
7854: my %savedsettings = %curr_group;
7855: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7856: my $deloutcome;
7857: if ($result eq 'ok') {
7858: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7859: } else {
7860: return ('write error',$result);
7861: }
7862: if ($deloutcome eq 'ok') {
7863: return 'ok';
7864: } else {
7865: return ('delete error',$deloutcome);
7866: }
7867: }
7868: }
7869:
7870: sub modify_group_roles {
7871: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7872: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7873: my $role = 'gr/'.&escape($userprivs);
7874: my ($uname,$udom) = split(/:/,$user);
7875: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7876: if ($result eq 'ok') {
7877: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7878: }
7879: return $result;
7880: }
7881:
7882: sub modify_coursegroup_membership {
7883: my ($cdom,$cnum,$membership) = @_;
7884: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7885: return $result;
7886: }
7887:
7888: sub get_active_groups {
7889: my ($udom,$uname,$cdom,$cnum) = @_;
7890: my $now = time;
7891: my %groups = ();
7892: foreach my $key (keys(%env)) {
7893: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7894: my ($start,$end) = split(/\./,$env{$key});
7895: if (($end!=0) && ($end<$now)) { next; }
7896: if (($start!=0) && ($start>$now)) { next; }
7897: if ($1 eq $cdom && $2 eq $cnum) {
7898: $groups{$3} = $env{$key} ;
7899: }
7900: }
7901: }
7902: return %groups;
7903: }
7904:
7905: sub get_group_membership {
7906: my ($cdom,$cnum,$group) = @_;
7907: return(&dump('groupmembership',$cdom,$cnum,$group));
7908: }
7909:
7910: sub get_users_groups {
7911: my ($udom,$uname,$courseid) = @_;
7912: my @usersgroups;
7913: my $cachetime=1800;
7914:
7915: my $hashid="$udom:$uname:$courseid";
7916: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7917: if (defined($cached)) {
7918: @usersgroups = split(/:/,$grouplist);
7919: } else {
7920: $grouplist = '';
7921: my $courseurl = &courseid_to_courseurl($courseid);
7922: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7923: my $access_end = $env{'course.'.$courseid.
7924: '.default_enrollment_end_date'};
7925: my $now = time;
7926: foreach my $key (keys(%roleshash)) {
7927: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7928: my $group = $1;
7929: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7930: my $start = $2;
7931: my $end = $1;
7932: if ($start == -1) { next; } # deleted from group
7933: if (($start!=0) && ($start>$now)) { next; }
7934: if (($end!=0) && ($end<$now)) {
7935: if ($access_end && $access_end < $now) {
7936: if ($access_end - $end < 86400) {
7937: push(@usersgroups,$group);
7938: }
7939: }
7940: next;
7941: }
7942: push(@usersgroups,$group);
7943: }
7944: }
7945: }
7946: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7947: $grouplist = join(':',@usersgroups);
7948: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7949: }
7950: return @usersgroups;
7951: }
7952:
7953: sub devalidate_getgroups_cache {
7954: my ($udom,$uname,$cdom,$cnum)=@_;
7955: my $courseid = $cdom.'_'.$cnum;
7956:
7957: my $hashid="$udom:$uname:$courseid";
7958: &devalidate_cache_new('getgroups',$hashid);
7959: }
7960:
7961: # ------------------------------------------------------------------ Plain Text
7962:
7963: sub plaintext {
7964: my ($short,$type,$cid,$forcedefault) = @_;
7965: if ($short =~ m{^cr/}) {
7966: return (split('/',$short))[-1];
7967: }
7968: if (!defined($cid)) {
7969: $cid = $env{'request.course.id'};
7970: }
7971: my %rolenames = (
7972: Course => 'std',
7973: Community => 'alt1',
7974: );
7975: if ($cid ne '') {
7976: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7977: unless ($forcedefault) {
7978: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7979: &Apache::lonlocal::mt_escape(\$roletext);
7980: return &Apache::lonlocal::mt($roletext);
7981: }
7982: }
7983: }
7984: if ((defined($type)) && (defined($rolenames{$type})) &&
7985: (defined($rolenames{$type})) &&
7986: (defined($prp{$short}{$rolenames{$type}}))) {
7987: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7988: } elsif ($cid ne '') {
7989: my $crstype = $env{'course.'.$cid.'.type'};
7990: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7991: (defined($prp{$short}{$rolenames{$crstype}}))) {
7992: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7993: }
7994: }
7995: return &Apache::lonlocal::mt($prp{$short}{'std'});
7996: }
7997:
7998: # ----------------------------------------------------------------- Assign Role
7999:
8000: sub assignrole {
8001: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8002: $context)=@_;
8003: my $mrole;
8004: if ($role =~ /^cr\//) {
8005: my $cwosec=$url;
8006: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8007: unless (&allowed('ccr',$cwosec)) {
8008: my $refused = 1;
8009: if ($context eq 'requestcourses') {
8010: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8011: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8012: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8013: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8014: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8015: if ($crsenv{'internal.courseowner'} eq
8016: $env{'user.name'}.':'.$env{'user.domain'}) {
8017: $refused = '';
8018: }
8019: }
8020: }
8021: }
8022: }
8023: if ($refused) {
8024: &logthis('Refused custom assignrole: '.
8025: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8026: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8027: return 'refused';
8028: }
8029: }
8030: $mrole='cr';
8031: } elsif ($role =~ /^gr\//) {
8032: my $cwogrp=$url;
8033: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8034: unless (&allowed('mdg',$cwogrp)) {
8035: &logthis('Refused group assignrole: '.
8036: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8037: $env{'user.name'}.' at '.$env{'user.domain'});
8038: return 'refused';
8039: }
8040: $mrole='gr';
8041: } else {
8042: my $cwosec=$url;
8043: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8044: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8045: my $refused;
8046: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8047: if (!(&allowed('c'.$role,$url))) {
8048: $refused = 1;
8049: }
8050: } else {
8051: $refused = 1;
8052: }
8053: if ($refused) {
8054: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8055: if (!$selfenroll && $context eq 'course') {
8056: my %crsenv;
8057: if ($role eq 'cc' || $role eq 'co') {
8058: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8059: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8060: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8061: if ($crsenv{'internal.courseowner'} eq
8062: $env{'user.name'}.':'.$env{'user.domain'}) {
8063: $refused = '';
8064: }
8065: }
8066: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8067: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8068: if ($crsenv{'internal.courseowner'} eq
8069: $env{'user.name'}.':'.$env{'user.domain'}) {
8070: $refused = '';
8071: }
8072: }
8073: }
8074: }
8075: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8076: $refused = '';
8077: } elsif ($context eq 'requestcourses') {
8078: my @possroles = ('st','ta','ep','in','cc','co');
8079: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8080: my $wrongcc;
8081: if ($cnum =~ /^$match_community$/) {
8082: $wrongcc = 1 if ($role eq 'cc');
8083: } else {
8084: $wrongcc = 1 if ($role eq 'co');
8085: }
8086: unless ($wrongcc) {
8087: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8088: if ($crsenv{'internal.courseowner'} eq
8089: $env{'user.name'}.':'.$env{'user.domain'}) {
8090: $refused = '';
8091: }
8092: }
8093: }
8094: } elsif ($context eq 'requestauthor') {
8095: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8096: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8097: if ($env{'environment.requestauthor'} eq 'automatic') {
8098: $refused = '';
8099: } else {
8100: my %domdefaults = &get_domain_defaults($udom);
8101: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8102: my $checkbystatus;
8103: if ($env{'user.adv'}) {
8104: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8105: if ($disposition eq 'automatic') {
8106: $refused = '';
8107: } elsif ($disposition eq '') {
8108: $checkbystatus = 1;
8109: }
8110: } else {
8111: $checkbystatus = 1;
8112: }
8113: if ($checkbystatus) {
8114: if ($env{'environment.inststatus'}) {
8115: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8116: foreach my $type (@inststatuses) {
8117: if (($type ne '') &&
8118: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8119: $refused = '';
8120: }
8121: }
8122: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8123: $refused = '';
8124: }
8125: }
8126: }
8127: }
8128: }
8129: }
8130: if ($refused) {
8131: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8132: ' '.$role.' '.$end.' '.$start.' by '.
8133: $env{'user.name'}.' at '.$env{'user.domain'});
8134: return 'refused';
8135: }
8136: }
8137: } elsif ($role eq 'au') {
8138: if ($url ne '/'.$udom.'/') {
8139: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8140: ' to assign author role for '.$uname.':'.$udom.
8141: ' in domain: '.$url.' refused (wrong domain).');
8142: return 'refused';
8143: }
8144: }
8145: $mrole=$role;
8146: }
8147: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8148: "$udom:$uname:$url".'_'."$mrole=$role";
8149: if ($end) { $command.='_'.$end; }
8150: if ($start) {
8151: if ($end) {
8152: $command.='_'.$start;
8153: } else {
8154: $command.='_0_'.$start;
8155: }
8156: }
8157: my $origstart = $start;
8158: my $origend = $end;
8159: my $delflag;
8160: # actually delete
8161: if ($deleteflag) {
8162: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8163: # modify command to delete the role
8164: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8165: "$udom:$uname:$url".'_'."$mrole";
8166: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8167: # set start and finish to negative values for userrolelog
8168: $start=-1;
8169: $end=-1;
8170: $delflag = 1;
8171: }
8172: }
8173: # send command
8174: my $answer=&reply($command,&homeserver($uname,$udom));
8175: # log new user role if status is ok
8176: if ($answer eq 'ok') {
8177: &userrolelog($role,$uname,$udom,$url,$start,$end);
8178: if (($role eq 'cc') || ($role eq 'in') ||
8179: ($role eq 'ep') || ($role eq 'ad') ||
8180: ($role eq 'ta') || ($role eq 'st') ||
8181: ($role=~/^cr/) || ($role eq 'gr') ||
8182: ($role eq 'co')) {
8183: # for course roles, perform group memberships changes triggered by role change.
8184: unless ($role =~ /^gr/) {
8185: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8186: $origstart,$selfenroll,$context);
8187: }
8188: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8189: $selfenroll,$context);
8190: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8191: ($role eq 'au') || ($role eq 'dc')) {
8192: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8193: $context);
8194: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8195: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8196: $context);
8197: }
8198: if ($role eq 'cc') {
8199: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8200: }
8201: }
8202: return $answer;
8203: }
8204:
8205: sub autoupdate_coowners {
8206: my ($url,$end,$start,$uname,$udom) = @_;
8207: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8208: if (($cdom ne '') && ($cnum ne '')) {
8209: my $now = time;
8210: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8211: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8212: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8213: my $instcode = $coursehash{'internal.coursecode'};
8214: if ($instcode ne '') {
8215: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8216: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8217: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8218: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8219: if ($result eq 'valid') {
8220: if ($coursehash{'internal.co-owners'}) {
8221: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8222: push(@newcoowners,$coowner);
8223: }
8224: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8225: push(@newcoowners,$uname.':'.$udom);
8226: }
8227: @newcoowners = sort(@newcoowners);
8228: } else {
8229: push(@newcoowners,$uname.':'.$udom);
8230: }
8231: } else {
8232: if ($coursehash{'internal.co-owners'}) {
8233: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8234: unless ($coowner eq $uname.':'.$udom) {
8235: push(@newcoowners,$coowner);
8236: }
8237: }
8238: unless (@newcoowners > 0) {
8239: $delcoowners = 1;
8240: $coowners = '';
8241: }
8242: }
8243: }
8244: if (@newcoowners || $delcoowners) {
8245: &store_coowners($cdom,$cnum,$coursehash{'home'},
8246: $delcoowners,@newcoowners);
8247: }
8248: }
8249: }
8250: }
8251: }
8252: }
8253: }
8254:
8255: sub store_coowners {
8256: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8257: my $cid = $cdom.'_'.$cnum;
8258: my ($coowners,$delresult,$putresult);
8259: if (@newcoowners) {
8260: $coowners = join(',',@newcoowners);
8261: my %coownershash = (
8262: 'internal.co-owners' => $coowners,
8263: );
8264: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8265: if ($putresult eq 'ok') {
8266: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8267: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8268: }
8269: }
8270: }
8271: if ($delcoowners) {
8272: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8273: if ($delresult eq 'ok') {
8274: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8275: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8276: }
8277: }
8278: }
8279: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8280: my %crsinfo =
8281: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8282: if (ref($crsinfo{$cid}) eq 'HASH') {
8283: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8284: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8285: }
8286: }
8287: }
8288:
8289: # -------------------------------------------------- Modify user authentication
8290: # Overrides without validation
8291:
8292: sub modifyuserauth {
8293: my ($udom,$uname,$umode,$upass)=@_;
8294: my $uhome=&homeserver($uname,$udom);
8295: unless (&allowed('mau',$udom)) { return 'refused'; }
8296: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8297: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8298: ' in domain '.$env{'request.role.domain'});
8299: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8300: &escape($upass),$uhome);
8301: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8302: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8303: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8304: &log($udom,,$uname,$uhome,
8305: 'Authentication changed by '.$env{'user.domain'}.', '.
8306: $env{'user.name'}.', '.$umode.
8307: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8308: unless ($reply eq 'ok') {
8309: &logthis('Authentication mode error: '.$reply);
8310: return 'error: '.$reply;
8311: }
8312: return 'ok';
8313: }
8314:
8315: # --------------------------------------------------------------- Modify a user
8316:
8317: sub modifyuser {
8318: my ($udom, $uname, $uid,
8319: $umode, $upass, $first,
8320: $middle, $last, $gene,
8321: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8322: $udom= &LONCAPA::clean_domain($udom);
8323: $uname=&LONCAPA::clean_username($uname);
8324: my $showcandelete = 'none';
8325: if (ref($candelete) eq 'ARRAY') {
8326: if (@{$candelete} > 0) {
8327: $showcandelete = join(', ',@{$candelete});
8328: }
8329: }
8330: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8331: $umode.', '.$first.', '.$middle.', '.
8332: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8333: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8334: ' desiredhome not specified').
8335: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8336: ' in domain '.$env{'request.role.domain'});
8337: my $uhome=&homeserver($uname,$udom,'true');
8338: my $newuser;
8339: if ($uhome eq 'no_host') {
8340: $newuser = 1;
8341: }
8342: # ----------------------------------------------------------------- Create User
8343: if (($uhome eq 'no_host') &&
8344: (($umode && $upass) || ($umode eq 'localauth'))) {
8345: my $unhome='';
8346: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8347: $unhome = $desiredhome;
8348: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8349: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8350: } else { # load balancing routine for determining $unhome
8351: my $loadm=10000000;
8352: my %servers = &get_servers($udom,'library');
8353: foreach my $tryserver (keys(%servers)) {
8354: my $answer=reply('load',$tryserver);
8355: if (($answer=~/\d+/) && ($answer<$loadm)) {
8356: $loadm=$answer;
8357: $unhome=$tryserver;
8358: }
8359: }
8360: }
8361: if (($unhome eq '') || ($unhome eq 'no_host')) {
8362: return 'error: unable to find a home server for '.$uname.
8363: ' in domain '.$udom;
8364: }
8365: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8366: &escape($upass),$unhome);
8367: unless ($reply eq 'ok') {
8368: return 'error: '.$reply;
8369: }
8370: $uhome=&homeserver($uname,$udom,'true');
8371: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8372: return 'error: unable verify users home machine.';
8373: }
8374: } # End of creation of new user
8375: # ---------------------------------------------------------------------- Add ID
8376: if ($uid) {
8377: $uid=~tr/A-Z/a-z/;
8378: my %uidhash=&idrget($udom,$uname);
8379: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8380: && (!$forceid)) {
8381: unless ($uid eq $uidhash{$uname}) {
8382: return 'error: user id "'.$uid.'" does not match '.
8383: 'current user id "'.$uidhash{$uname}.'".';
8384: }
8385: } else {
8386: &idput($udom,($uname => $uid));
8387: }
8388: }
8389: # -------------------------------------------------------------- Add names, etc
8390: my @tmp=&get('environment',
8391: ['firstname','middlename','lastname','generation','id',
8392: 'permanentemail','inststatus'],
8393: $udom,$uname);
8394: my (%names,%oldnames);
8395: if ($tmp[0] =~ m/^error:.*/) {
8396: %names=();
8397: } else {
8398: %names = @tmp;
8399: %oldnames = %names;
8400: }
8401: #
8402: # If name, email and/or uid are blank (e.g., because an uploaded file
8403: # of users did not contain them), do not overwrite existing values
8404: # unless field is in $candelete array ref.
8405: #
8406:
8407: my @fields = ('firstname','middlename','lastname','generation',
8408: 'permanentemail','id');
8409: my %newvalues;
8410: if (ref($candelete) eq 'ARRAY') {
8411: foreach my $field (@fields) {
8412: if (grep(/^\Q$field\E$/,@{$candelete})) {
8413: if ($field eq 'firstname') {
8414: $names{$field} = $first;
8415: } elsif ($field eq 'middlename') {
8416: $names{$field} = $middle;
8417: } elsif ($field eq 'lastname') {
8418: $names{$field} = $last;
8419: } elsif ($field eq 'generation') {
8420: $names{$field} = $gene;
8421: } elsif ($field eq 'permanentemail') {
8422: $names{$field} = $email;
8423: } elsif ($field eq 'id') {
8424: $names{$field} = $uid;
8425: }
8426: }
8427: }
8428: }
8429: if ($first) { $names{'firstname'} = $first; }
8430: if (defined($middle)) { $names{'middlename'} = $middle; }
8431: if ($last) { $names{'lastname'} = $last; }
8432: if (defined($gene)) { $names{'generation'} = $gene; }
8433: if ($email) {
8434: $email=~s/[^\w\@\.\-\,]//gs;
8435: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8436: }
8437: if ($uid) { $names{'id'} = $uid; }
8438: if (defined($inststatus)) {
8439: $names{'inststatus'} = '';
8440: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8441: if (ref($usertypes) eq 'HASH') {
8442: my @okstatuses;
8443: foreach my $item (split(/:/,$inststatus)) {
8444: if (defined($usertypes->{$item})) {
8445: push(@okstatuses,$item);
8446: }
8447: }
8448: if (@okstatuses) {
8449: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8450: }
8451: }
8452: }
8453: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8454: $umode.', '.$first.', '.$middle.', '.
8455: $last.', '.$gene.', '.$email.', '.$inststatus;
8456: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8457: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8458: } else {
8459: $logmsg .= ' during self creation';
8460: }
8461: my $changed;
8462: if ($newuser) {
8463: $changed = 1;
8464: } else {
8465: foreach my $field (@fields) {
8466: if ($names{$field} ne $oldnames{$field}) {
8467: $changed = 1;
8468: last;
8469: }
8470: }
8471: }
8472: unless ($changed) {
8473: $logmsg = 'No changes in user information needed for: '.$logmsg;
8474: &logthis($logmsg);
8475: return 'ok';
8476: }
8477: my $reply = &put('environment', \%names, $udom,$uname);
8478: if ($reply ne 'ok') {
8479: return 'error: '.$reply;
8480: }
8481: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8482: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8483: }
8484: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8485: &devalidate_cache_new('namescache',$uname.':'.$udom);
8486: $logmsg = 'Success modifying user '.$logmsg;
8487: &logthis($logmsg);
8488: return 'ok';
8489: }
8490:
8491: # -------------------------------------------------------------- Modify student
8492:
8493: sub modifystudent {
8494: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8495: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8496: $selfenroll,$context,$inststatus,$credits)=@_;
8497: if (!$cid) {
8498: unless ($cid=$env{'request.course.id'}) {
8499: return 'not_in_class';
8500: }
8501: }
8502: # --------------------------------------------------------------- Make the user
8503: my $reply=&modifyuser
8504: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8505: $desiredhome,$email,$inststatus);
8506: unless ($reply eq 'ok') { return $reply; }
8507: # This will cause &modify_student_enrollment to get the uid from the
8508: # student's environment
8509: $uid = undef if (!$forceid);
8510: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8511: $gene,$usec,$end,$start,$type,$locktype,
8512: $cid,$selfenroll,$context,$credits);
8513: return $reply;
8514: }
8515:
8516: sub modify_student_enrollment {
8517: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8518: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8519: my ($cdom,$cnum,$chome);
8520: if (!$cid) {
8521: unless ($cid=$env{'request.course.id'}) {
8522: return 'not_in_class';
8523: }
8524: $cdom=$env{'course.'.$cid.'.domain'};
8525: $cnum=$env{'course.'.$cid.'.num'};
8526: } else {
8527: ($cdom,$cnum)=split(/_/,$cid);
8528: }
8529: $chome=$env{'course.'.$cid.'.home'};
8530: if (!$chome) {
8531: $chome=&homeserver($cnum,$cdom);
8532: }
8533: if (!$chome) { return 'unknown_course'; }
8534: # Make sure the user exists
8535: my $uhome=&homeserver($uname,$udom);
8536: if (($uhome eq '') || ($uhome eq 'no_host')) {
8537: return 'error: no such user';
8538: }
8539: # Get student data if we were not given enough information
8540: if (!defined($first) || $first eq '' ||
8541: !defined($last) || $last eq '' ||
8542: !defined($uid) || $uid eq '' ||
8543: !defined($middle) || $middle eq '' ||
8544: !defined($gene) || $gene eq '') {
8545: # They did not supply us with enough data to enroll the student, so
8546: # we need to pick up more information.
8547: my %tmp = &get('environment',
8548: ['firstname','middlename','lastname', 'generation','id']
8549: ,$udom,$uname);
8550:
8551: #foreach my $key (keys(%tmp)) {
8552: # &logthis("key $key = ".$tmp{$key});
8553: #}
8554: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8555: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8556: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8557: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8558: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8559: }
8560: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8561: my $user = "$uname:$udom";
8562: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8563: my $reply=cput('classlist',
8564: {$user =>
8565: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8566: $cdom,$cnum);
8567: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8568: &devalidate_getsection_cache($udom,$uname,$cid);
8569: } else {
8570: return 'error: '.$reply;
8571: }
8572: # Add student role to user
8573: my $uurl='/'.$cid;
8574: $uurl=~s/\_/\//g;
8575: if ($usec) {
8576: $uurl.='/'.$usec;
8577: }
8578: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8579: $selfenroll,$context);
8580: if ($result ne 'ok') {
8581: if ($old_entry{$user} ne '') {
8582: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8583: } else {
8584: $reply = &del('classlist',[$user],$cdom,$cnum);
8585: }
8586: }
8587: return $result;
8588: }
8589:
8590: sub format_name {
8591: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8592: my $name;
8593: if ($first ne 'lastname') {
8594: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8595: } else {
8596: if ($lastname=~/\S/) {
8597: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8598: $name=~s/\s+,/,/;
8599: } else {
8600: $name.= $firstname.' '.$middlename.' '.$generation;
8601: }
8602: }
8603: $name=~s/^\s+//;
8604: $name=~s/\s+$//;
8605: $name=~s/\s+/ /g;
8606: return $name;
8607: }
8608:
8609: # ------------------------------------------------- Write to course preferences
8610:
8611: sub writecoursepref {
8612: my ($courseid,%prefs)=@_;
8613: $courseid=~s/^\///;
8614: $courseid=~s/\_/\//g;
8615: my ($cdomain,$cnum)=split(/\//,$courseid);
8616: my $chome=homeserver($cnum,$cdomain);
8617: if (($chome eq '') || ($chome eq 'no_host')) {
8618: return 'error: no such course';
8619: }
8620: my $cstring='';
8621: foreach my $pref (keys(%prefs)) {
8622: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8623: }
8624: $cstring=~s/\&$//;
8625: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8626: }
8627:
8628: # ---------------------------------------------------------- Make/modify course
8629:
8630: sub createcourse {
8631: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8632: $course_owner,$crstype,$cnum,$context,$category)=@_;
8633: $url=&declutter($url);
8634: my $cid='';
8635: if ($context eq 'requestcourses') {
8636: my $can_create = 0;
8637: my ($ownername,$ownerdom) = split(':',$course_owner);
8638: if ($udom eq $ownerdom) {
8639: if (&usertools_access($ownername,$ownerdom,$category,undef,
8640: $context)) {
8641: $can_create = 1;
8642: }
8643: } else {
8644: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8645: $category);
8646: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8647: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8648: if (@curr > 0) {
8649: my @options = qw(approval validate autolimit);
8650: my $optregex = join('|',@options);
8651: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8652: $can_create = 1;
8653: }
8654: }
8655: }
8656: }
8657: if ($can_create) {
8658: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8659: unless (&allowed('ccc',$udom)) {
8660: return 'refused';
8661: }
8662: }
8663: } else {
8664: return 'refused';
8665: }
8666: } elsif (!&allowed('ccc',$udom)) {
8667: return 'refused';
8668: }
8669: # --------------------------------------------------------------- Get Unique ID
8670: my $uname;
8671: if ($cnum =~ /^$match_courseid$/) {
8672: my $chome=&homeserver($cnum,$udom,'true');
8673: if (($chome eq '') || ($chome eq 'no_host')) {
8674: $uname = $cnum;
8675: } else {
8676: $uname = &generate_coursenum($udom,$crstype);
8677: }
8678: } else {
8679: $uname = &generate_coursenum($udom,$crstype);
8680: }
8681: return $uname if ($uname =~ /^error/);
8682: # -------------------------------------------------- Check supplied server name
8683: if (!defined($course_server)) {
8684: if (defined(&domain($udom,'primary'))) {
8685: $course_server = &domain($udom,'primary');
8686: } else {
8687: $course_server = $env{'user.home'};
8688: }
8689: }
8690: my %host_servers =
8691: &Apache::lonnet::get_servers($udom,'library');
8692: unless ($host_servers{$course_server}) {
8693: return 'error: invalid home server for course: '.$course_server;
8694: }
8695: # ------------------------------------------------------------- Make the course
8696: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8697: $course_server);
8698: unless ($reply eq 'ok') { return 'error: '.$reply; }
8699: my $uhome=&homeserver($uname,$udom,'true');
8700: if (($uhome eq '') || ($uhome eq 'no_host')) {
8701: return 'error: no such course';
8702: }
8703: # ----------------------------------------------------------------- Course made
8704: # log existence
8705: my $now = time;
8706: my $newcourse = {
8707: $udom.'_'.$uname => {
8708: description => $description,
8709: inst_code => $inst_code,
8710: owner => $course_owner,
8711: type => $crstype,
8712: creator => $env{'user.name'}.':'.
8713: $env{'user.domain'},
8714: created => $now,
8715: context => $context,
8716: },
8717: };
8718: &courseidput($udom,$newcourse,$uhome,'notime');
8719: # set toplevel url
8720: my $topurl=$url;
8721: unless ($nonstandard) {
8722: # ------------------------------------------ For standard courses, make top url
8723: my $mapurl=&clutter($url);
8724: if ($mapurl eq '/res/') { $mapurl=''; }
8725: $env{'form.initmap'}=(<<ENDINITMAP);
8726: <map>
8727: <resource id="1" type="start"></resource>
8728: <resource id="2" src="$mapurl"></resource>
8729: <resource id="3" type="finish"></resource>
8730: <link index="1" from="1" to="2"></link>
8731: <link index="2" from="2" to="3"></link>
8732: </map>
8733: ENDINITMAP
8734: $topurl=&declutter(
8735: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8736: );
8737: }
8738: # ----------------------------------------------------------- Write preferences
8739: &writecoursepref($udom.'_'.$uname,
8740: ('description' => $description,
8741: 'url' => $topurl,
8742: 'internal.creator' => $env{'user.name'}.':'.
8743: $env{'user.domain'},
8744: 'internal.created' => $now,
8745: 'internal.creationcontext' => $context)
8746: );
8747: return '/'.$udom.'/'.$uname;
8748: }
8749:
8750: # ------------------------------------------------------------------- Create ID
8751: sub generate_coursenum {
8752: my ($udom,$crstype) = @_;
8753: my $domdesc = &domain($udom);
8754: return 'error: invalid domain' if ($domdesc eq '');
8755: my $first;
8756: if ($crstype eq 'Community') {
8757: $first = '0';
8758: } else {
8759: $first = int(1+rand(9));
8760: }
8761: my $uname=$first.
8762: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8763: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8764: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8765: # ----------------------------------------------- Make sure that does not exist
8766: my $uhome=&homeserver($uname,$udom,'true');
8767: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8768: if ($crstype eq 'Community') {
8769: $first = '0';
8770: } else {
8771: $first = int(1+rand(9));
8772: }
8773: $uname=$first.
8774: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8775: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8776: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8777: $uhome=&homeserver($uname,$udom,'true');
8778: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8779: return 'error: unable to generate unique course-ID';
8780: }
8781: }
8782: return $uname;
8783: }
8784:
8785: sub is_course {
8786: my ($cdom, $cnum) = scalar(@_) == 1 ?
8787: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8788:
8789: return unless $cdom and $cnum;
8790:
8791: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8792: '.');
8793:
8794: return unless(exists($courses{$cdom.'_'.$cnum}));
8795: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8796: }
8797:
8798: sub store_userdata {
8799: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8800: my $result;
8801: if ($datakey ne '') {
8802: if (ref($storehash) eq 'HASH') {
8803: if ($udom eq '' || $uname eq '') {
8804: $udom = $env{'user.domain'};
8805: $uname = $env{'user.name'};
8806: }
8807: my $uhome=&homeserver($uname,$udom);
8808: if (($uhome eq '') || ($uhome eq 'no_host')) {
8809: $result = 'error: no_host';
8810: } else {
8811: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8812: $storehash->{'host'} = $perlvar{'lonHostID'};
8813:
8814: my $namevalue='';
8815: foreach my $key (keys(%{$storehash})) {
8816: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8817: }
8818: $namevalue=~s/\&$//;
8819: unless ($namespace eq 'courserequests') {
8820: $datakey = &escape($datakey);
8821: }
8822: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8823: $namevalue,$uhome);
8824: }
8825: } else {
8826: $result = 'error: data to store was not a hash reference';
8827: }
8828: } else {
8829: $result= 'error: invalid requestkey';
8830: }
8831: return $result;
8832: }
8833:
8834: # ---------------------------------------------------------- Assign Custom Role
8835:
8836: sub assigncustomrole {
8837: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8838: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8839: $end,$start,$deleteflag,$selfenroll,$context);
8840: }
8841:
8842: # ----------------------------------------------------------------- Revoke Role
8843:
8844: sub revokerole {
8845: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8846: my $now=time;
8847: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8848: }
8849:
8850: # ---------------------------------------------------------- Revoke Custom Role
8851:
8852: sub revokecustomrole {
8853: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8854: my $now=time;
8855: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8856: $deleteflag,$selfenroll,$context);
8857: }
8858:
8859: # ------------------------------------------------------------ Disk usage
8860: sub diskusage {
8861: my ($udom,$uname,$directorypath,$getpropath)=@_;
8862: $directorypath =~ s/\/$//;
8863: my $listing=&reply('du2:'.&escape($directorypath).':'
8864: .&escape($getpropath).':'.&escape($uname).':'
8865: .&escape($udom),homeserver($uname,$udom));
8866: if ($listing eq 'unknown_cmd') {
8867: if ($getpropath) {
8868: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8869: }
8870: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8871: }
8872: return $listing;
8873: }
8874:
8875: sub is_locked {
8876: my ($file_name, $domain, $user, $which) = @_;
8877: my @check;
8878: my $is_locked;
8879: push (@check,$file_name);
8880: my %locked = &get('file_permissions',\@check,
8881: $env{'user.domain'},$env{'user.name'});
8882: my ($tmp)=keys(%locked);
8883: if ($tmp=~/^error:/) { undef(%locked); }
8884:
8885: if (ref($locked{$file_name}) eq 'ARRAY') {
8886: $is_locked = 'false';
8887: foreach my $entry (@{$locked{$file_name}}) {
8888: if (ref($entry) eq 'ARRAY') {
8889: $is_locked = 'true';
8890: if (ref($which) eq 'ARRAY') {
8891: push(@{$which},$entry);
8892: } else {
8893: last;
8894: }
8895: }
8896: }
8897: } else {
8898: $is_locked = 'false';
8899: }
8900: return $is_locked;
8901: }
8902:
8903: sub declutter_portfile {
8904: my ($file) = @_;
8905: $file =~ s{^(/portfolio/|portfolio/)}{/};
8906: return $file;
8907: }
8908:
8909: # ------------------------------------------------------------- Mark as Read Only
8910:
8911: sub mark_as_readonly {
8912: my ($domain,$user,$files,$what) = @_;
8913: my %current_permissions = &dump('file_permissions',$domain,$user);
8914: my ($tmp)=keys(%current_permissions);
8915: if ($tmp=~/^error:/) { undef(%current_permissions); }
8916: foreach my $file (@{$files}) {
8917: $file = &declutter_portfile($file);
8918: push(@{$current_permissions{$file}},$what);
8919: }
8920: &put('file_permissions',\%current_permissions,$domain,$user);
8921: return;
8922: }
8923:
8924: # ------------------------------------------------------------Save Selected Files
8925:
8926: sub save_selected_files {
8927: my ($user, $path, @files) = @_;
8928: my $filename = $user."savedfiles";
8929: my @other_files = &files_not_in_path($user, $path);
8930: open (OUT, '>'.$tmpdir.$filename);
8931: foreach my $file (@files) {
8932: print (OUT $env{'form.currentpath'}.$file."\n");
8933: }
8934: foreach my $file (@other_files) {
8935: print (OUT $file."\n");
8936: }
8937: close (OUT);
8938: return 'ok';
8939: }
8940:
8941: sub clear_selected_files {
8942: my ($user) = @_;
8943: my $filename = $user."savedfiles";
8944: open (OUT, '>'.LONCAPA::tempdir().$filename);
8945: print (OUT undef);
8946: close (OUT);
8947: return ("ok");
8948: }
8949:
8950: sub files_in_path {
8951: my ($user, $path) = @_;
8952: my $filename = $user."savedfiles";
8953: my %return_files;
8954: open (IN, '<'.LONCAPA::tempdir().$filename);
8955: while (my $line_in = <IN>) {
8956: chomp ($line_in);
8957: my @paths_and_file = split (m!/!, $line_in);
8958: my $file_part = pop (@paths_and_file);
8959: my $path_part = join ('/', @paths_and_file);
8960: $path_part.='/';
8961: my $path_and_file = $path_part.$file_part;
8962: if ($path_part eq $path) {
8963: $return_files{$file_part}= 'selected';
8964: }
8965: }
8966: close (IN);
8967: return (\%return_files);
8968: }
8969:
8970: # called in portfolio select mode, to show files selected NOT in current directory
8971: sub files_not_in_path {
8972: my ($user, $path) = @_;
8973: my $filename = $user."savedfiles";
8974: my @return_files;
8975: my $path_part;
8976: open(IN, '<'.LONCAPA::.$filename);
8977: while (my $line = <IN>) {
8978: #ok, I know it's clunky, but I want it to work
8979: my @paths_and_file = split(m|/|, $line);
8980: my $file_part = pop(@paths_and_file);
8981: chomp($file_part);
8982: my $path_part = join('/', @paths_and_file);
8983: $path_part .= '/';
8984: my $path_and_file = $path_part.$file_part;
8985: if ($path_part ne $path) {
8986: push(@return_files, ($path_and_file));
8987: }
8988: }
8989: close(OUT);
8990: return (@return_files);
8991: }
8992:
8993: #----------------------------------------------Get portfolio file permissions
8994:
8995: sub get_portfile_permissions {
8996: my ($domain,$user) = @_;
8997: my %current_permissions = &dump('file_permissions',$domain,$user);
8998: my ($tmp)=keys(%current_permissions);
8999: if ($tmp=~/^error:/) { undef(%current_permissions); }
9000: return \%current_permissions;
9001: }
9002:
9003: #---------------------------------------------Get portfolio file access controls
9004:
9005: sub get_access_controls {
9006: my ($current_permissions,$group,$file) = @_;
9007: my %access;
9008: my $real_file = $file;
9009: $file =~ s/\.meta$//;
9010: if (defined($file)) {
9011: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9012: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9013: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9014: }
9015: }
9016: } else {
9017: foreach my $key (keys(%{$current_permissions})) {
9018: if ($key =~ /\0accesscontrol$/) {
9019: if (defined($group)) {
9020: if ($key !~ m-^\Q$group\E/-) {
9021: next;
9022: }
9023: }
9024: my ($fullpath) = split(/\0/,$key);
9025: if (ref($$current_permissions{$key}) eq 'HASH') {
9026: foreach my $control (keys(%{$$current_permissions{$key}})) {
9027: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9028: }
9029: }
9030: }
9031: }
9032: }
9033: return %access;
9034: }
9035:
9036: sub modify_access_controls {
9037: my ($file_name,$changes,$domain,$user)=@_;
9038: my ($outcome,$deloutcome);
9039: my %store_permissions;
9040: my %new_values;
9041: my %new_control;
9042: my %translation;
9043: my @deletions = ();
9044: my $now = time;
9045: if (exists($$changes{'activate'})) {
9046: if (ref($$changes{'activate'}) eq 'HASH') {
9047: my @newitems = sort(keys(%{$$changes{'activate'}}));
9048: my $numnew = scalar(@newitems);
9049: for (my $i=0; $i<$numnew; $i++) {
9050: my $newkey = $newitems[$i];
9051: my $newid = &Apache::loncommon::get_cgi_id();
9052: if ($newkey =~ /^\d+:/) {
9053: $newkey =~ s/^(\d+)/$newid/;
9054: $translation{$1} = $newid;
9055: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9056: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9057: $translation{$1} = $newid;
9058: }
9059: $new_values{$file_name."\0".$newkey} =
9060: $$changes{'activate'}{$newitems[$i]};
9061: $new_control{$newkey} = $now;
9062: }
9063: }
9064: }
9065: my %todelete;
9066: my %changed_items;
9067: foreach my $action ('delete','update') {
9068: if (exists($$changes{$action})) {
9069: if (ref($$changes{$action}) eq 'HASH') {
9070: foreach my $key (keys(%{$$changes{$action}})) {
9071: my ($itemnum) = ($key =~ /^([^:]+):/);
9072: if ($action eq 'delete') {
9073: $todelete{$itemnum} = 1;
9074: } else {
9075: $changed_items{$itemnum} = $key;
9076: }
9077: }
9078: }
9079: }
9080: }
9081: # get lock on access controls for file.
9082: my $lockhash = {
9083: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9084: ':'.$env{'user.domain'},
9085: };
9086: my $tries = 0;
9087: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9088:
9089: while (($gotlock ne 'ok') && $tries <3) {
9090: $tries ++;
9091: sleep 1;
9092: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9093: }
9094: if ($gotlock eq 'ok') {
9095: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9096: my ($tmp)=keys(%curr_permissions);
9097: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9098: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9099: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9100: if (ref($curr_controls) eq 'HASH') {
9101: foreach my $control_item (keys(%{$curr_controls})) {
9102: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9103: if (defined($todelete{$itemnum})) {
9104: push(@deletions,$file_name."\0".$control_item);
9105: } else {
9106: if (defined($changed_items{$itemnum})) {
9107: $new_control{$changed_items{$itemnum}} = $now;
9108: push(@deletions,$file_name."\0".$control_item);
9109: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9110: } else {
9111: $new_control{$control_item} = $$curr_controls{$control_item};
9112: }
9113: }
9114: }
9115: }
9116: }
9117: my ($group);
9118: if (&is_course($domain,$user)) {
9119: ($group,my $file) = split(/\//,$file_name,2);
9120: }
9121: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9122: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9123: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9124: # remove lock
9125: my @del_lock = ($file_name."\0".'locked_access_records');
9126: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9127: my $sqlresult =
9128: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9129: $group);
9130: } else {
9131: $outcome = "error: could not obtain lockfile\n";
9132: }
9133: return ($outcome,$deloutcome,\%new_values,\%translation);
9134: }
9135:
9136: sub make_public_indefinitely {
9137: my ($requrl) = @_;
9138: my $now = time;
9139: my $action = 'activate';
9140: my $aclnum = 0;
9141: if (&is_portfolio_url($requrl)) {
9142: my (undef,$udom,$unum,$file_name,$group) =
9143: &parse_portfolio_url($requrl);
9144: my $current_perms = &get_portfile_permissions($udom,$unum);
9145: my %access_controls = &get_access_controls($current_perms,
9146: $group,$file_name);
9147: foreach my $key (keys(%{$access_controls{$file_name}})) {
9148: my ($num,$scope,$end,$start) =
9149: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9150: if ($scope eq 'public') {
9151: if ($start <= $now && $end == 0) {
9152: $action = 'none';
9153: } else {
9154: $action = 'update';
9155: $aclnum = $num;
9156: }
9157: last;
9158: }
9159: }
9160: if ($action eq 'none') {
9161: return 'ok';
9162: } else {
9163: my %changes;
9164: my $newend = 0;
9165: my $newstart = $now;
9166: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9167: $changes{$action}{$newkey} = {
9168: type => 'public',
9169: time => {
9170: start => $newstart,
9171: end => $newend,
9172: },
9173: };
9174: my ($outcome,$deloutcome,$new_values,$translation) =
9175: &modify_access_controls($file_name,\%changes,$udom,$unum);
9176: return $outcome;
9177: }
9178: } else {
9179: return 'invalid';
9180: }
9181: }
9182:
9183: #------------------------------------------------------Get Marked as Read Only
9184:
9185: sub get_marked_as_readonly {
9186: my ($domain,$user,$what,$group) = @_;
9187: my $current_permissions = &get_portfile_permissions($domain,$user);
9188: my @readonly_files;
9189: my $cmp1=$what;
9190: if (ref($what)) { $cmp1=join('',@{$what}) };
9191: while (my ($file_name,$value) = each(%{$current_permissions})) {
9192: if (defined($group)) {
9193: if ($file_name !~ m-^\Q$group\E/-) {
9194: next;
9195: }
9196: }
9197: if (ref($value) eq "ARRAY"){
9198: foreach my $stored_what (@{$value}) {
9199: my $cmp2=$stored_what;
9200: if (ref($stored_what) eq 'ARRAY') {
9201: $cmp2=join('',@{$stored_what});
9202: }
9203: if ($cmp1 eq $cmp2) {
9204: push(@readonly_files, $file_name);
9205: last;
9206: } elsif (!defined($what)) {
9207: push(@readonly_files, $file_name);
9208: last;
9209: }
9210: }
9211: }
9212: }
9213: return @readonly_files;
9214: }
9215: #-----------------------------------------------------------Get Marked as Read Only Hash
9216:
9217: sub get_marked_as_readonly_hash {
9218: my ($current_permissions,$group,$what) = @_;
9219: my %readonly_files;
9220: while (my ($file_name,$value) = each(%{$current_permissions})) {
9221: if (defined($group)) {
9222: if ($file_name !~ m-^\Q$group\E/-) {
9223: next;
9224: }
9225: }
9226: if (ref($value) eq "ARRAY"){
9227: foreach my $stored_what (@{$value}) {
9228: if (ref($stored_what) eq 'ARRAY') {
9229: foreach my $lock_descriptor(@{$stored_what}) {
9230: if ($lock_descriptor eq 'graded') {
9231: $readonly_files{$file_name} = 'graded';
9232: } elsif ($lock_descriptor eq 'handback') {
9233: $readonly_files{$file_name} = 'handback';
9234: } else {
9235: if (!exists($readonly_files{$file_name})) {
9236: $readonly_files{$file_name} = 'locked';
9237: }
9238: }
9239: }
9240: }
9241: }
9242: }
9243: }
9244: return %readonly_files;
9245: }
9246: # ------------------------------------------------------------ Unmark as Read Only
9247:
9248: sub unmark_as_readonly {
9249: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9250: # for portfolio submissions, $what contains [$symb,$crsid]
9251: my ($domain,$user,$what,$file_name,$group) = @_;
9252: $file_name = &declutter_portfile($file_name);
9253: my $symb_crs = $what;
9254: if (ref($what)) { $symb_crs=join('',@$what); }
9255: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9256: my ($tmp)=keys(%current_permissions);
9257: if ($tmp=~/^error:/) { undef(%current_permissions); }
9258: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9259: foreach my $file (@readonly_files) {
9260: my $clean_file = &declutter_portfile($file);
9261: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9262: my $current_locks = $current_permissions{$file};
9263: my @new_locks;
9264: my @del_keys;
9265: if (ref($current_locks) eq "ARRAY"){
9266: foreach my $locker (@{$current_locks}) {
9267: my $compare=$locker;
9268: if (ref($locker) eq 'ARRAY') {
9269: $compare=join('',@{$locker});
9270: if ($compare ne $symb_crs) {
9271: push(@new_locks, $locker);
9272: }
9273: }
9274: }
9275: if (scalar(@new_locks) > 0) {
9276: $current_permissions{$file} = \@new_locks;
9277: } else {
9278: push(@del_keys, $file);
9279: &del('file_permissions',\@del_keys, $domain, $user);
9280: delete($current_permissions{$file});
9281: }
9282: }
9283: }
9284: &put('file_permissions',\%current_permissions,$domain,$user);
9285: return;
9286: }
9287:
9288: # ------------------------------------------------------------ Directory lister
9289:
9290: sub dirlist {
9291: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9292: $uri=~s/^\///;
9293: $uri=~s/\/$//;
9294: my ($udom, $uname);
9295: if ($getuserdir) {
9296: $udom = $userdomain;
9297: $uname = $username;
9298: } else {
9299: (undef,$udom,$uname)=split(/\//,$uri);
9300: if(defined($userdomain)) {
9301: $udom = $userdomain;
9302: }
9303: if(defined($username)) {
9304: $uname = $username;
9305: }
9306: }
9307: my ($dirRoot,$listing,@listing_results);
9308:
9309: $dirRoot = $perlvar{'lonDocRoot'};
9310: if (defined($getpropath)) {
9311: $dirRoot = &propath($udom,$uname);
9312: $dirRoot =~ s/\/$//;
9313: } elsif (defined($getuserdir)) {
9314: my $subdir=$uname.'__';
9315: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9316: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9317: ."/$udom/$subdir/$uname";
9318: } elsif (defined($alternateRoot)) {
9319: $dirRoot = $alternateRoot;
9320: }
9321:
9322: if($udom) {
9323: if($uname) {
9324: my $uhome = &homeserver($uname,$udom);
9325: if ($uhome eq 'no_host') {
9326: return ([],'no_host');
9327: }
9328: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9329: .$getuserdir.':'.&escape($dirRoot)
9330: .':'.&escape($uname).':'.&escape($udom),$uhome);
9331: if ($listing eq 'unknown_cmd') {
9332: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9333: } else {
9334: @listing_results = map { &unescape($_); } split(/:/,$listing);
9335: }
9336: if ($listing eq 'unknown_cmd') {
9337: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9338: @listing_results = split(/:/,$listing);
9339: } else {
9340: @listing_results = map { &unescape($_); } split(/:/,$listing);
9341: }
9342: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9343: ($listing eq 'rejected') || ($listing eq 'refused') ||
9344: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9345: return ([],$listing);
9346: } else {
9347: return (\@listing_results);
9348: }
9349: } elsif(!$alternateRoot) {
9350: my (%allusers,%listerror);
9351: my %servers = &get_servers($udom,'library');
9352: foreach my $tryserver (keys(%servers)) {
9353: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9354: &escape($udom),$tryserver);
9355: if ($listing eq 'unknown_cmd') {
9356: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9357: $udom, $tryserver);
9358: } else {
9359: @listing_results = map { &unescape($_); } split(/:/,$listing);
9360: }
9361: if ($listing eq 'unknown_cmd') {
9362: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9363: $udom, $tryserver);
9364: @listing_results = split(/:/,$listing);
9365: } else {
9366: @listing_results =
9367: map { &unescape($_); } split(/:/,$listing);
9368: }
9369: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9370: ($listing eq 'rejected') || ($listing eq 'refused') ||
9371: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9372: $listerror{$tryserver} = $listing;
9373: } else {
9374: foreach my $line (@listing_results) {
9375: my ($entry) = split(/&/,$line,2);
9376: $allusers{$entry} = 1;
9377: }
9378: }
9379: }
9380: my @alluserslist=();
9381: foreach my $user (sort(keys(%allusers))) {
9382: push(@alluserslist,$user.'&user');
9383: }
9384: return (\@alluserslist);
9385: } else {
9386: return ([],'missing username');
9387: }
9388: } elsif(!defined($getpropath)) {
9389: my $path = $perlvar{'lonDocRoot'}.'/res/';
9390: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9391: return (\@all_domains);
9392: } else {
9393: return ([],'missing domain');
9394: }
9395: }
9396:
9397: # --------------------------------------------- GetFileTimestamp
9398: # This function utilizes dirlist and returns the date stamp for
9399: # when it was last modified. It will also return an error of -1
9400: # if an error occurs
9401:
9402: sub GetFileTimestamp {
9403: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9404: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9405: $studentName = &LONCAPA::clean_username($studentName);
9406: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9407: undef,$getuserdir);
9408: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9409: return -1;
9410: }
9411: if (ref($fileref) eq 'ARRAY') {
9412: my @stats = split('&',$fileref->[0]);
9413: # @stats contains first the filename, then the stat output
9414: return $stats[10]; # so this is 10 instead of 9.
9415: } else {
9416: return -1;
9417: }
9418: }
9419:
9420: sub stat_file {
9421: my ($uri) = @_;
9422: $uri = &clutter_with_no_wrapper($uri);
9423:
9424: my ($udom,$uname,$file);
9425: if ($uri =~ m-^/(uploaded|editupload)/-) {
9426: ($udom,$uname,$file) =
9427: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9428: $file = 'userfiles/'.$file;
9429: }
9430: if ($uri =~ m-^/res/-) {
9431: ($udom,$uname) =
9432: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9433: $file = $uri;
9434: }
9435:
9436: if (!$udom || !$uname || !$file) {
9437: # unable to handle the uri
9438: return ();
9439: }
9440: my $getpropath;
9441: if ($file =~ /^userfiles\//) {
9442: $getpropath = 1;
9443: }
9444: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9445: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9446: return ();
9447: } else {
9448: if (ref($listref) eq 'ARRAY') {
9449: my @stats = split('&',$listref->[0]);
9450: shift(@stats); #filename is first
9451: return @stats;
9452: }
9453: }
9454: return ();
9455: }
9456:
9457: # -------------------------------------------------------- Value of a Condition
9458:
9459: # gets the value of a specific preevaluated condition
9460: # stored in the string $env{user.state.<cid>}
9461: # or looks up a condition reference in the bighash and if if hasn't
9462: # already been evaluated recurses into docondval to get the value of
9463: # the condition, then memoizing it to
9464: # $env{user.state.<cid>.<condition>}
9465: sub directcondval {
9466: my $number=shift;
9467: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9468: &Apache::lonuserstate::evalstate();
9469: }
9470: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9471: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9472: } elsif ($number =~ /^_/) {
9473: my $sub_condition;
9474: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9475: &GDBM_READER(),0640)) {
9476: $sub_condition=$bighash{'conditions'.$number};
9477: untie(%bighash);
9478: }
9479: my $value = &docondval($sub_condition);
9480: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9481: return $value;
9482: }
9483: if ($env{'user.state.'.$env{'request.course.id'}}) {
9484: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9485: } else {
9486: return 2;
9487: }
9488: }
9489:
9490: # get the collection of conditions for this resource
9491: sub condval {
9492: my $condidx=shift;
9493: my $allpathcond='';
9494: foreach my $cond (split(/\|/,$condidx)) {
9495: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9496: $allpathcond.=
9497: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9498: }
9499: }
9500: $allpathcond=~s/\|$//;
9501: return &docondval($allpathcond);
9502: }
9503:
9504: #evaluates an expression of conditions
9505: sub docondval {
9506: my ($allpathcond) = @_;
9507: my $result=0;
9508: if ($env{'request.course.id'}
9509: && defined($allpathcond)) {
9510: my $operand='|';
9511: my @stack;
9512: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9513: if ($chunk eq '(') {
9514: push @stack,($operand,$result);
9515: } elsif ($chunk eq ')') {
9516: my $before=pop @stack;
9517: if (pop @stack eq '&') {
9518: $result=$result>$before?$before:$result;
9519: } else {
9520: $result=$result>$before?$result:$before;
9521: }
9522: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9523: $operand=$chunk;
9524: } else {
9525: my $new=directcondval($chunk);
9526: if ($operand eq '&') {
9527: $result=$result>$new?$new:$result;
9528: } else {
9529: $result=$result>$new?$result:$new;
9530: }
9531: }
9532: }
9533: }
9534: return $result;
9535: }
9536:
9537: # ---------------------------------------------------- Devalidate courseresdata
9538:
9539: sub devalidatecourseresdata {
9540: my ($coursenum,$coursedomain)=@_;
9541: my $hashid=$coursenum.':'.$coursedomain;
9542: &devalidate_cache_new('courseres',$hashid);
9543: }
9544:
9545:
9546: # --------------------------------------------------- Course Resourcedata Query
9547: #
9548: # Parameters:
9549: # $coursenum - Number of the course.
9550: # $coursedomain - Domain at which the course was created.
9551: # Returns:
9552: # A hash of the course parameters along (I think) with timestamps
9553: # and version info.
9554:
9555: sub get_courseresdata {
9556: my ($coursenum,$coursedomain)=@_;
9557: my $coursehom=&homeserver($coursenum,$coursedomain);
9558: my $hashid=$coursenum.':'.$coursedomain;
9559: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9560: my %dumpreply;
9561: unless (defined($cached)) {
9562: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9563: $result=\%dumpreply;
9564: my ($tmp) = keys(%dumpreply);
9565: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9566: &do_cache_new('courseres',$hashid,$result,600);
9567: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9568: return $tmp;
9569: } elsif ($tmp =~ /^(error)/) {
9570: $result=undef;
9571: &do_cache_new('courseres',$hashid,$result,600);
9572: }
9573: }
9574: return $result;
9575: }
9576:
9577: sub devalidateuserresdata {
9578: my ($uname,$udom)=@_;
9579: my $hashid="$udom:$uname";
9580: &devalidate_cache_new('userres',$hashid);
9581: }
9582:
9583: sub get_userresdata {
9584: my ($uname,$udom)=@_;
9585: #most student don\'t have any data set, check if there is some data
9586: if (&EXT_cache_status($udom,$uname)) { return undef; }
9587:
9588: my $hashid="$udom:$uname";
9589: my ($result,$cached)=&is_cached_new('userres',$hashid);
9590: if (!defined($cached)) {
9591: my %resourcedata=&dump('resourcedata',$udom,$uname);
9592: $result=\%resourcedata;
9593: &do_cache_new('userres',$hashid,$result,600);
9594: }
9595: my ($tmp)=keys(%$result);
9596: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9597: return $result;
9598: }
9599: #error 2 occurs when the .db doesn't exist
9600: if ($tmp!~/error: 2 /) {
9601: &logthis("<font color=\"blue\">WARNING:".
9602: " Trying to get resource data for ".
9603: $uname." at ".$udom.": ".
9604: $tmp."</font>");
9605: } elsif ($tmp=~/error: 2 /) {
9606: #&EXT_cache_set($udom,$uname);
9607: &do_cache_new('userres',$hashid,undef,600);
9608: undef($tmp); # not really an error so don't send it back
9609: }
9610: return $tmp;
9611: }
9612: #----------------------------------------------- resdata - return resource data
9613: # Purpose:
9614: # Return resource data for either users or for a course.
9615: # Parameters:
9616: # $name - Course/user name.
9617: # $domain - Name of the domain the user/course is registered on.
9618: # $type - Type of thing $name is (must be 'course' or 'user'
9619: # @which - Array of names of resources desired.
9620: # Returns:
9621: # The value of the first reasource in @which that is found in the
9622: # resource hash.
9623: # Exceptional Conditions:
9624: # If the $type passed in is not valid (not the string 'course' or
9625: # 'user', an undefined reference is returned.
9626: # If none of the resources are found, an undef is returned
9627: sub resdata {
9628: my ($name,$domain,$type,@which)=@_;
9629: my $result;
9630: if ($type eq 'course') {
9631: $result=&get_courseresdata($name,$domain);
9632: } elsif ($type eq 'user') {
9633: $result=&get_userresdata($name,$domain);
9634: }
9635: if (!ref($result)) { return $result; }
9636: foreach my $item (@which) {
9637: if (defined($result->{$item->[0]})) {
9638: return [$result->{$item->[0]},$item->[1]];
9639: }
9640: }
9641: return undef;
9642: }
9643:
9644: sub get_numsuppfiles {
9645: my ($cnum,$cdom,$ignorecache)=@_;
9646: my $hashid=$cnum.':'.$cdom;
9647: my ($suppcount,$cached);
9648: unless ($ignorecache) {
9649: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
9650: }
9651: unless (defined($cached)) {
9652: my $chome=&homeserver($cnum,$cdom);
9653: unless ($chome eq 'no_host') {
9654: ($suppcount,my $errors) = (0,0);
9655: my $suppmap = 'supplemental.sequence';
9656: ($suppcount,$errors) =
9657: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
9658: }
9659: &do_cache_new('suppcount',$hashid,$suppcount,600);
9660: }
9661: return $suppcount;
9662: }
9663:
9664: #
9665: # EXT resource caching routines
9666: #
9667:
9668: sub clear_EXT_cache_status {
9669: &delenv('cache.EXT.');
9670: }
9671:
9672: sub EXT_cache_status {
9673: my ($target_domain,$target_user) = @_;
9674: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9675: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9676: # We know already the user has no data
9677: return 1;
9678: } else {
9679: return 0;
9680: }
9681: }
9682:
9683: sub EXT_cache_set {
9684: my ($target_domain,$target_user) = @_;
9685: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9686: #&appenv({$cachename => time});
9687: }
9688:
9689: # --------------------------------------------------------- Value of a Variable
9690: sub EXT {
9691:
9692: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
9693: unless ($varname) { return ''; }
9694: #get real user name/domain, courseid and symb
9695: my $courseid;
9696: my $publicuser;
9697: if ($symbparm) {
9698: $symbparm=&get_symb_from_alias($symbparm);
9699: }
9700: if (!($uname && $udom)) {
9701: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9702: if (!$symbparm) { $symbparm=$cursymb; }
9703: } else {
9704: $courseid=$env{'request.course.id'};
9705: }
9706: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9707: my $rest;
9708: if (defined($therest[0])) {
9709: $rest=join('.',@therest);
9710: } else {
9711: $rest='';
9712: }
9713:
9714: my $qualifierrest=$qualifier;
9715: if ($rest) { $qualifierrest.='.'.$rest; }
9716: my $spacequalifierrest=$space;
9717: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9718: if ($realm eq 'user') {
9719: # --------------------------------------------------------------- user.resource
9720: if ($space eq 'resource') {
9721: if ( (defined($Apache::lonhomework::parsing_a_problem)
9722: || defined($Apache::lonhomework::parsing_a_task))
9723: &&
9724: ($symbparm eq &symbread()) ) {
9725: # if we are in the middle of processing the resource the
9726: # get the value we are planning on committing
9727: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9728: return $Apache::lonhomework::results{$qualifierrest};
9729: } else {
9730: return $Apache::lonhomework::history{$qualifierrest};
9731: }
9732: } else {
9733: my %restored;
9734: if ($publicuser || $env{'request.state'} eq 'construct') {
9735: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9736: } else {
9737: %restored=&restore($symbparm,$courseid,$udom,$uname);
9738: }
9739: return $restored{$qualifierrest};
9740: }
9741: # ----------------------------------------------------------------- user.access
9742: } elsif ($space eq 'access') {
9743: # FIXME - not supporting calls for a specific user
9744: return &allowed($qualifier,$rest);
9745: # ------------------------------------------ user.preferences, user.environment
9746: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9747: if (($uname eq $env{'user.name'}) &&
9748: ($udom eq $env{'user.domain'})) {
9749: return $env{join('.',('environment',$qualifierrest))};
9750: } else {
9751: my %returnhash;
9752: if (!$publicuser) {
9753: %returnhash=&userenvironment($udom,$uname,
9754: $qualifierrest);
9755: }
9756: return $returnhash{$qualifierrest};
9757: }
9758: # ----------------------------------------------------------------- user.course
9759: } elsif ($space eq 'course') {
9760: # FIXME - not supporting calls for a specific user
9761: return $env{join('.',('request.course',$qualifier))};
9762: # ------------------------------------------------------------------- user.role
9763: } elsif ($space eq 'role') {
9764: # FIXME - not supporting calls for a specific user
9765: my ($role,$where)=split(/\./,$env{'request.role'});
9766: if ($qualifier eq 'value') {
9767: return $role;
9768: } elsif ($qualifier eq 'extent') {
9769: return $where;
9770: }
9771: # ----------------------------------------------------------------- user.domain
9772: } elsif ($space eq 'domain') {
9773: return $udom;
9774: # ------------------------------------------------------------------- user.name
9775: } elsif ($space eq 'name') {
9776: return $uname;
9777: # ---------------------------------------------------- Any other user namespace
9778: } else {
9779: my %reply;
9780: if (!$publicuser) {
9781: %reply=&get($space,[$qualifierrest],$udom,$uname);
9782: }
9783: return $reply{$qualifierrest};
9784: }
9785: } elsif ($realm eq 'query') {
9786: # ---------------------------------------------- pull stuff out of query string
9787: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9788: [$spacequalifierrest]);
9789: return $env{'form.'.$spacequalifierrest};
9790: } elsif ($realm eq 'request') {
9791: # ------------------------------------------------------------- request.browser
9792: if ($space eq 'browser') {
9793: return $env{'browser.'.$qualifier};
9794: # ------------------------------------------------------------ request.filename
9795: } else {
9796: return $env{'request.'.$spacequalifierrest};
9797: }
9798: } elsif ($realm eq 'course') {
9799: # ---------------------------------------------------------- course.description
9800: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9801: } elsif ($realm eq 'resource') {
9802:
9803: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9804: if (!$symbparm) { $symbparm=&symbread(); }
9805: }
9806:
9807: if ($qualifier eq '') {
9808: if ($space eq 'title') {
9809: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9810: return &gettitle($symbparm);
9811: }
9812:
9813: if ($space eq 'map') {
9814: my ($map) = &decode_symb($symbparm);
9815: return &symbread($map);
9816: }
9817: if ($space eq 'maptitle') {
9818: my ($map) = &decode_symb($symbparm);
9819: return &gettitle($map);
9820: }
9821: if ($space eq 'filename') {
9822: if ($symbparm) {
9823: return &clutter((&decode_symb($symbparm))[2]);
9824: }
9825: return &hreflocation('',$env{'request.filename'});
9826: }
9827:
9828: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
9829: if ($space eq 'visibleparts') {
9830: my $navmap = Apache::lonnavmaps::navmap->new();
9831: my $item;
9832: if (ref($navmap)) {
9833: my $res = $navmap->getBySymb($symbparm);
9834: my $parts = $res->parts();
9835: if (ref($parts) eq 'ARRAY') {
9836: $item = join(',',@{$parts});
9837: }
9838: undef($navmap);
9839: }
9840: return $item;
9841: }
9842: }
9843: }
9844:
9845: my ($section, $group, @groups);
9846: my ($courselevelm,$courselevel);
9847: if (($courseid eq '') && ($cid)) {
9848: $courseid = $cid;
9849: }
9850: if (($symbparm && $courseid) &&
9851: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
9852:
9853: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9854:
9855: # ----------------------------------------------------- Cascading lookup scheme
9856: my $symbp=$symbparm;
9857: my $mapp=&deversion((&decode_symb($symbp))[0]);
9858:
9859: my $symbparm=$symbp.'.'.$spacequalifierrest;
9860: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9861:
9862: if (($env{'user.name'} eq $uname) &&
9863: ($env{'user.domain'} eq $udom)) {
9864: $section=$env{'request.course.sec'};
9865: @groups = split(/:/,$env{'request.course.groups'});
9866: @groups=&sort_course_groups($courseid,@groups);
9867: } else {
9868: if (! defined($usection)) {
9869: $section=&getsection($udom,$uname,$courseid);
9870: } else {
9871: $section = $usection;
9872: }
9873: @groups = &get_users_groups($udom,$uname,$courseid);
9874: }
9875:
9876: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9877: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9878: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9879:
9880: $courselevel=$courseid.'.'.$spacequalifierrest;
9881: my $courselevelr=$courseid.'.'.$symbparm;
9882: $courselevelm=$courseid.'.'.$mapparm;
9883:
9884: # ----------------------------------------------------------- first, check user
9885:
9886: my $userreply=&resdata($uname,$udom,'user',
9887: ([$courselevelr,'resource'],
9888: [$courselevelm,'map' ],
9889: [$courselevel, 'course' ]));
9890: if (defined($userreply)) { return &get_reply($userreply); }
9891:
9892: # ------------------------------------------------ second, check some of course
9893: my $coursereply;
9894: if (@groups > 0) {
9895: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9896: $mapparm,$spacequalifierrest);
9897: if (defined($coursereply)) { return &get_reply($coursereply); }
9898: }
9899:
9900: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9901: $env{'course.'.$courseid.'.domain'},
9902: 'course',
9903: ([$seclevelr, 'resource'],
9904: [$seclevelm, 'map' ],
9905: [$seclevel, 'course' ],
9906: [$courselevelr,'resource']));
9907: if (defined($coursereply)) { return &get_reply($coursereply); }
9908:
9909: # ------------------------------------------------------ third, check map parms
9910: my %parmhash=();
9911: my $thisparm='';
9912: if (tie(%parmhash,'GDBM_File',
9913: $env{'request.course.fn'}.'_parms.db',
9914: &GDBM_READER(),0640)) {
9915: $thisparm=$parmhash{$symbparm};
9916: untie(%parmhash);
9917: }
9918: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9919: }
9920: # ------------------------------------------ fourth, look in resource metadata
9921:
9922: $spacequalifierrest=~s/\./\_/;
9923: my $filename;
9924: if (!$symbparm) { $symbparm=&symbread(); }
9925: if ($symbparm) {
9926: $filename=(&decode_symb($symbparm))[2];
9927: } else {
9928: $filename=$env{'request.filename'};
9929: }
9930: my $metadata=&metadata($filename,$spacequalifierrest);
9931: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9932: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9933: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9934:
9935: # ---------------------------------------------- fourth, look in rest of course
9936: if ($symbparm && defined($courseid) &&
9937: $courseid eq $env{'request.course.id'}) {
9938: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9939: $env{'course.'.$courseid.'.domain'},
9940: 'course',
9941: ([$courselevelm,'map' ],
9942: [$courselevel, 'course']));
9943: if (defined($coursereply)) { return &get_reply($coursereply); }
9944: }
9945: # ------------------------------------------------------------------ Cascade up
9946: unless ($space eq '0') {
9947: my @parts=split(/_/,$space);
9948: my $id=pop(@parts);
9949: my $part=join('_',@parts);
9950: if ($part eq '') { $part='0'; }
9951: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9952: $symbparm,$udom,$uname,$section,1);
9953: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9954: }
9955: if ($recurse) { return undef; }
9956: my $pack_def=&packages_tab_default($filename,$varname);
9957: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9958: # ---------------------------------------------------- Any other user namespace
9959: } elsif ($realm eq 'environment') {
9960: # ----------------------------------------------------------------- environment
9961: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9962: return $env{'environment.'.$spacequalifierrest};
9963: } else {
9964: if ($uname eq 'anonymous' && $udom eq '') {
9965: return '';
9966: }
9967: my %returnhash=&userenvironment($udom,$uname,
9968: $spacequalifierrest);
9969: return $returnhash{$spacequalifierrest};
9970: }
9971: } elsif ($realm eq 'system') {
9972: # ----------------------------------------------------------------- system.time
9973: if ($space eq 'time') {
9974: return time;
9975: }
9976: } elsif ($realm eq 'server') {
9977: # ----------------------------------------------------------------- system.time
9978: if ($space eq 'name') {
9979: return $ENV{'SERVER_NAME'};
9980: }
9981: }
9982: return '';
9983: }
9984:
9985: sub get_reply {
9986: my ($reply_value) = @_;
9987: if (ref($reply_value) eq 'ARRAY') {
9988: if (wantarray) {
9989: return @$reply_value;
9990: }
9991: return $reply_value->[0];
9992: } else {
9993: return $reply_value;
9994: }
9995: }
9996:
9997: sub check_group_parms {
9998: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9999: my @groupitems = ();
10000: my $resultitem;
10001: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
10002: foreach my $group (@{$groups}) {
10003: foreach my $level (@levels) {
10004: my $item = $courseid.'.['.$group.'].'.$level->[0];
10005: push(@groupitems,[$item,$level->[1]]);
10006: }
10007: }
10008: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10009: $env{'course.'.$courseid.'.domain'},
10010: 'course',@groupitems);
10011: return $coursereply;
10012: }
10013:
10014: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10015: my ($courseid,@groups) = @_;
10016: @groups = sort(@groups);
10017: return @groups;
10018: }
10019:
10020: sub packages_tab_default {
10021: my ($uri,$varname)=@_;
10022: my (undef,$part,$name)=split(/\./,$varname);
10023:
10024: my (@extension,@specifics,$do_default);
10025: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10026: my ($pack_type,$pack_part)=split(/_/,$package,2);
10027: if ($pack_type eq 'default') {
10028: $do_default=1;
10029: } elsif ($pack_type eq 'extension') {
10030: push(@extension,[$package,$pack_type,$pack_part]);
10031: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10032: # only look at packages defaults for packages that this id is
10033: push(@specifics,[$package,$pack_type,$pack_part]);
10034: }
10035: }
10036: # first look for a package that matches the requested part id
10037: foreach my $package (@specifics) {
10038: my (undef,$pack_type,$pack_part)=@{$package};
10039: next if ($pack_part ne $part);
10040: if (defined($packagetab{"$pack_type&$name&default"})) {
10041: return $packagetab{"$pack_type&$name&default"};
10042: }
10043: }
10044: # look for any possible matching non extension_ package
10045: foreach my $package (@specifics) {
10046: my (undef,$pack_type,$pack_part)=@{$package};
10047: if (defined($packagetab{"$pack_type&$name&default"})) {
10048: return $packagetab{"$pack_type&$name&default"};
10049: }
10050: if ($pack_type eq 'part') { $pack_part='0'; }
10051: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10052: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10053: }
10054: }
10055: # look for any posible extension_ match
10056: foreach my $package (@extension) {
10057: my ($package,$pack_type)=@{$package};
10058: if (defined($packagetab{"$pack_type&$name&default"})) {
10059: return $packagetab{"$pack_type&$name&default"};
10060: }
10061: if (defined($packagetab{$package."&$name&default"})) {
10062: return $packagetab{$package."&$name&default"};
10063: }
10064: }
10065: # look for a global default setting
10066: if ($do_default && defined($packagetab{"default&$name&default"})) {
10067: return $packagetab{"default&$name&default"};
10068: }
10069: return undef;
10070: }
10071:
10072: sub add_prefix_and_part {
10073: my ($prefix,$part)=@_;
10074: my $keyroot;
10075: if (defined($prefix) && $prefix !~ /^__/) {
10076: # prefix that has a part already
10077: $keyroot=$prefix;
10078: } elsif (defined($prefix)) {
10079: # prefix that is missing a part
10080: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10081: } else {
10082: # no prefix at all
10083: if (defined($part)) { $keyroot='_'.$part; }
10084: }
10085: return $keyroot;
10086: }
10087:
10088: # ---------------------------------------------------------------- Get metadata
10089:
10090: my %metaentry;
10091: my %importedpartids;
10092: sub metadata {
10093: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10094: $uri=&declutter($uri);
10095: # if it is a non metadata possible uri return quickly
10096: if (($uri eq '') ||
10097: (($uri =~ m|^/*adm/|) &&
10098: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10099: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10100: return undef;
10101: }
10102: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
10103: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10104: return undef;
10105: }
10106: my $filename=$uri;
10107: $uri=~s/\.meta$//;
10108: #
10109: # Is the metadata already cached?
10110: # Look at timestamp of caching
10111: # Everything is cached by the main uri, libraries are never directly cached
10112: #
10113: if (!defined($liburi)) {
10114: my ($result,$cached)=&is_cached_new('meta',$uri);
10115: if (defined($cached)) { return $result->{':'.$what}; }
10116: }
10117: {
10118: # Imported parts would go here
10119: my %importedids=();
10120: my @origfileimportpartids=();
10121: my $importedparts=0;
10122: #
10123: # Is this a recursive call for a library?
10124: #
10125: # if (! exists($metacache{$uri})) {
10126: # $metacache{$uri}={};
10127: # }
10128: my $cachetime = 60*60;
10129: if ($liburi) {
10130: $liburi=&declutter($liburi);
10131: $filename=$liburi;
10132: } else {
10133: &devalidate_cache_new('meta',$uri);
10134: undef(%metaentry);
10135: }
10136: my %metathesekeys=();
10137: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10138: my $metastring;
10139: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10140: my $which = &hreflocation('','/'.($liburi || $uri));
10141: $metastring =
10142: &Apache::lonnet::ssi_body($which,
10143: ('grade_target' => 'meta'));
10144: $cachetime = 1; # only want this cached in the child not long term
10145: } elsif (($uri !~ m -^(editupload)/-) &&
10146: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10147: my $file=&filelocation('',&clutter($filename));
10148: #push(@{$metaentry{$uri.'.file'}},$file);
10149: $metastring=&getfile($file);
10150: }
10151: my $parser=HTML::LCParser->new(\$metastring);
10152: my $token;
10153: undef %metathesekeys;
10154: while ($token=$parser->get_token) {
10155: if ($token->[0] eq 'S') {
10156: if (defined($token->[2]->{'package'})) {
10157: #
10158: # This is a package - get package info
10159: #
10160: my $package=$token->[2]->{'package'};
10161: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10162: if (defined($token->[2]->{'id'})) {
10163: $keyroot.='_'.$token->[2]->{'id'};
10164: }
10165: if ($metaentry{':packages'}) {
10166: $metaentry{':packages'}.=','.$package.$keyroot;
10167: } else {
10168: $metaentry{':packages'}=$package.$keyroot;
10169: }
10170: foreach my $pack_entry (keys(%packagetab)) {
10171: my $part=$keyroot;
10172: $part=~s/^\_//;
10173: if ($pack_entry=~/^\Q$package\E\&/ ||
10174: $pack_entry=~/^\Q$package\E_0\&/) {
10175: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10176: # ignore package.tab specified default values
10177: # here &package_tab_default() will fetch those
10178: if ($subp eq 'default') { next; }
10179: my $value=$packagetab{$pack_entry};
10180: my $unikey;
10181: if ($pack =~ /_0$/) {
10182: $unikey='parameter_0_'.$name;
10183: $part=0;
10184: } else {
10185: $unikey='parameter'.$keyroot.'_'.$name;
10186: }
10187: if ($subp eq 'display') {
10188: $value.=' [Part: '.$part.']';
10189: }
10190: $metaentry{':'.$unikey.'.part'}=$part;
10191: $metathesekeys{$unikey}=1;
10192: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10193: $metaentry{':'.$unikey.'.'.$subp}=$value;
10194: }
10195: if (defined($metaentry{':'.$unikey.'.default'})) {
10196: $metaentry{':'.$unikey}=
10197: $metaentry{':'.$unikey.'.default'};
10198: }
10199: }
10200: }
10201: } else {
10202: #
10203: # This is not a package - some other kind of start tag
10204: #
10205: my $entry=$token->[1];
10206: my $unikey='';
10207:
10208: if ($entry eq 'import') {
10209: #
10210: # Importing a library here
10211: #
10212: my $location=$parser->get_text('/import');
10213: my $dir=$filename;
10214: $dir=~s|[^/]*$||;
10215: $location=&filelocation($dir,$location);
10216:
10217: my $importmode=$token->[2]->{'importmode'};
10218: if ($importmode eq 'problem') {
10219: # Import as problem/response
10220: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10221: } elsif ($importmode eq 'part') {
10222: # Import as part(s)
10223: $importedparts=1;
10224: # We need to get the original file and the imported file to get the part order correct
10225: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10226: # Load and inspect original file
10227: if ($#origfileimportpartids<0) {
10228: undef(%importedpartids);
10229: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10230: my $origfile=&getfile($origfilelocation);
10231: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10232: }
10233:
10234: # Load and inspect imported file
10235: my $impfile=&getfile($location);
10236: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10237: if ($#impfilepartids>=0) {
10238: # This problem had parts
10239: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10240: } else {
10241: # Importing by turning a single problem into a problem part
10242: # It gets the import-tags ID as part-ID
10243: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10244: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10245: }
10246: } else {
10247: # Normal import
10248: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10249: if (defined($token->[2]->{'id'})) {
10250: $unikey.='_'.$token->[2]->{'id'};
10251: }
10252: }
10253:
10254: if ($depthcount<20) {
10255: my $metadata =
10256: &metadata($uri,'keys', $location,$unikey,
10257: $depthcount+1);
10258: foreach my $meta (split(',',$metadata)) {
10259: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10260: $metathesekeys{$meta}=1;
10261: }
10262:
10263: }
10264: } else {
10265: #
10266: # Not importing, some other kind of non-package, non-library start tag
10267: #
10268: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10269: if (defined($token->[2]->{'id'})) {
10270: $unikey.='_'.$token->[2]->{'id'};
10271: }
10272: if (defined($token->[2]->{'name'})) {
10273: $unikey.='_'.$token->[2]->{'name'};
10274: }
10275: $metathesekeys{$unikey}=1;
10276: foreach my $param (@{$token->[3]}) {
10277: $metaentry{':'.$unikey.'.'.$param} =
10278: $token->[2]->{$param};
10279: }
10280: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10281: my $default=$metaentry{':'.$unikey.'.default'};
10282: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10283: # only ws inside the tag, and not in default, so use default
10284: # as value
10285: $metaentry{':'.$unikey}=$default;
10286: } elsif ( $internaltext =~ /\S/ ) {
10287: # something interesting inside the tag
10288: $metaentry{':'.$unikey}=$internaltext;
10289: } else {
10290: # no interesting values, don't set a default
10291: }
10292: # end of not-a-package not-a-library import
10293: }
10294: # end of not-a-package start tag
10295: }
10296: # the next is the end of "start tag"
10297: }
10298: }
10299: my ($extension) = ($uri =~ /\.(\w+)$/);
10300: $extension = lc($extension);
10301: if ($extension eq 'htm') { $extension='html'; }
10302:
10303: foreach my $key (keys(%packagetab)) {
10304: #no specific packages #how's our extension
10305: if ($key!~/^extension_\Q$extension\E&/) { next; }
10306: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10307: \%metathesekeys);
10308: }
10309:
10310: if (!exists($metaentry{':packages'})
10311: || $packagetab{"import_defaults&extension_$extension"}) {
10312: foreach my $key (keys(%packagetab)) {
10313: #no specific packages well let's get default then
10314: if ($key!~/^default&/) { next; }
10315: &metadata_create_package_def($uri,$key,'default',
10316: \%metathesekeys);
10317: }
10318: }
10319: # are there custom rights to evaluate
10320: if ($metaentry{':copyright'} eq 'custom') {
10321:
10322: #
10323: # Importing a rights file here
10324: #
10325: unless ($depthcount) {
10326: my $location=$metaentry{':customdistributionfile'};
10327: my $dir=$filename;
10328: $dir=~s|[^/]*$||;
10329: $location=&filelocation($dir,$location);
10330: my $rights_metadata =
10331: &metadata($uri,'keys',$location,'_rights',
10332: $depthcount+1);
10333: foreach my $rights (split(',',$rights_metadata)) {
10334: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10335: $metathesekeys{$rights}=1;
10336: }
10337: }
10338: }
10339: # uniqifiy package listing
10340: my %seen;
10341: my @uniq_packages =
10342: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10343: $metaentry{':packages'} = join(',',@uniq_packages);
10344:
10345: if ($importedparts) {
10346: # We had imported parts and need to rebuild partorder
10347: $metaentry{':partorder'}='';
10348: $metathesekeys{'partorder'}=1;
10349: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10350: if ($origfileimportpartids[$index] eq 'part') {
10351: # original part, part of the problem
10352: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10353: } else {
10354: # we have imported parts at this position
10355: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10356: }
10357: }
10358: $metaentry{':partorder'}=~s/^\,//;
10359: }
10360:
10361: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10362: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10363: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10364: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10365: # this is the end of "was not already recently cached
10366: }
10367: return $metaentry{':'.$what};
10368: }
10369:
10370: sub metadata_create_package_def {
10371: my ($uri,$key,$package,$metathesekeys)=@_;
10372: my ($pack,$name,$subp)=split(/\&/,$key);
10373: if ($subp eq 'default') { next; }
10374:
10375: if (defined($metaentry{':packages'})) {
10376: $metaentry{':packages'}.=','.$package;
10377: } else {
10378: $metaentry{':packages'}=$package;
10379: }
10380: my $value=$packagetab{$key};
10381: my $unikey;
10382: $unikey='parameter_0_'.$name;
10383: $metaentry{':'.$unikey.'.part'}=0;
10384: $$metathesekeys{$unikey}=1;
10385: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10386: $metaentry{':'.$unikey.'.'.$subp}=$value;
10387: }
10388: if (defined($metaentry{':'.$unikey.'.default'})) {
10389: $metaentry{':'.$unikey}=
10390: $metaentry{':'.$unikey.'.default'};
10391: }
10392: }
10393:
10394: sub metadata_generate_part0 {
10395: my ($metadata,$metacache,$uri) = @_;
10396: my %allnames;
10397: foreach my $metakey (keys(%$metadata)) {
10398: if ($metakey=~/^parameter\_(.*)/) {
10399: my $part=$$metacache{':'.$metakey.'.part'};
10400: my $name=$$metacache{':'.$metakey.'.name'};
10401: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10402: $allnames{$name}=$part;
10403: }
10404: }
10405: }
10406: foreach my $name (keys(%allnames)) {
10407: $$metadata{"parameter_0_$name"}=1;
10408: my $key=":parameter_0_$name";
10409: $$metacache{"$key.part"}='0';
10410: $$metacache{"$key.name"}=$name;
10411: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10412: $allnames{$name}.'_'.$name.
10413: '.type'};
10414: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10415: '.display'};
10416: my $expr='[Part: '.$allnames{$name}.']';
10417: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10418: $$metacache{"$key.display"}=$olddis;
10419: }
10420: }
10421:
10422: # ------------------------------------------------------ Devalidate title cache
10423:
10424: sub devalidate_title_cache {
10425: my ($url)=@_;
10426: if (!$env{'request.course.id'}) { return; }
10427: my $symb=&symbread($url);
10428: if (!$symb) { return; }
10429: my $key=$env{'request.course.id'}."\0".$symb;
10430: &devalidate_cache_new('title',$key);
10431: }
10432:
10433: # ------------------------------------------------- Get the title of a course
10434:
10435: sub current_course_title {
10436: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10437: }
10438: # ------------------------------------------------- Get the title of a resource
10439:
10440: sub gettitle {
10441: my $urlsymb=shift;
10442: my $symb=&symbread($urlsymb);
10443: if ($symb) {
10444: my $key=$env{'request.course.id'}."\0".$symb;
10445: my ($result,$cached)=&is_cached_new('title',$key);
10446: if (defined($cached)) {
10447: return $result;
10448: }
10449: my ($map,$resid,$url)=&decode_symb($symb);
10450: my $title='';
10451: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10452: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10453: } else {
10454: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10455: &GDBM_READER(),0640)) {
10456: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10457: $title=$bighash{'title_'.$mapid.'.'.$resid};
10458: untie(%bighash);
10459: }
10460: }
10461: $title=~s/\&colon\;/\:/gs;
10462: if ($title) {
10463: # Remember both $symb and $title for dynamic metadata
10464: $accesshash{$symb.'___crstitle'}=$title;
10465: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10466: # Cache this title and then return it
10467: return &do_cache_new('title',$key,$title,600);
10468: }
10469: $urlsymb=$url;
10470: }
10471: my $title=&metadata($urlsymb,'title');
10472: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10473: return $title;
10474: }
10475:
10476: sub get_slot {
10477: my ($which,$cnum,$cdom)=@_;
10478: if (!$cnum || !$cdom) {
10479: (undef,my $courseid)=&whichuser();
10480: $cdom=$env{'course.'.$courseid.'.domain'};
10481: $cnum=$env{'course.'.$courseid.'.num'};
10482: }
10483: my $key=join("\0",'slots',$cdom,$cnum,$which);
10484: my %slotinfo;
10485: if (exists($remembered{$key})) {
10486: $slotinfo{$which} = $remembered{$key};
10487: } else {
10488: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10489: &Apache::lonhomework::showhash(%slotinfo);
10490: my ($tmp)=keys(%slotinfo);
10491: if ($tmp=~/^error:/) { return (); }
10492: $remembered{$key} = $slotinfo{$which};
10493: }
10494: if (ref($slotinfo{$which}) eq 'HASH') {
10495: return %{$slotinfo{$which}};
10496: }
10497: return $slotinfo{$which};
10498: }
10499:
10500: sub get_reservable_slots {
10501: my ($cnum,$cdom,$uname,$udom) = @_;
10502: my $now = time;
10503: my $reservable_info;
10504: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10505: if (exists($remembered{$key})) {
10506: $reservable_info = $remembered{$key};
10507: } else {
10508: my %resv;
10509: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10510: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10511: $reservable_info = \%resv;
10512: $remembered{$key} = $reservable_info;
10513: }
10514: return $reservable_info;
10515: }
10516:
10517: sub get_course_slots {
10518: my ($cnum,$cdom) = @_;
10519: my $hashid=$cnum.':'.$cdom;
10520: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10521: if (defined($cached)) {
10522: if (ref($result) eq 'HASH') {
10523: return %{$result};
10524: }
10525: } else {
10526: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10527: my ($tmp) = keys(%slots);
10528: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10529: &do_cache_new('allslots',$hashid,\%slots,600);
10530: return %slots;
10531: }
10532: }
10533: return;
10534: }
10535:
10536: sub devalidate_slots_cache {
10537: my ($cnum,$cdom)=@_;
10538: my $hashid=$cnum.':'.$cdom;
10539: &devalidate_cache_new('allslots',$hashid);
10540: }
10541:
10542: sub get_coursechange {
10543: my ($cdom,$cnum) = @_;
10544: if ($cdom eq '' || $cnum eq '') {
10545: return unless ($env{'request.course.id'});
10546: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10547: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10548: }
10549: my $hashid=$cdom.'_'.$cnum;
10550: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10551: if ((defined($cached)) && ($change ne '')) {
10552: return $change;
10553: } else {
10554: my %crshash;
10555: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10556: if ($crshash{'internal.contentchange'} eq '') {
10557: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10558: if ($change eq '') {
10559: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10560: $change = $crshash{'internal.created'};
10561: }
10562: } else {
10563: $change = $crshash{'internal.contentchange'};
10564: }
10565: my $cachetime = 600;
10566: &do_cache_new('crschange',$hashid,$change,$cachetime);
10567: }
10568: return $change;
10569: }
10570:
10571: sub devalidate_coursechange_cache {
10572: my ($cnum,$cdom)=@_;
10573: my $hashid=$cnum.':'.$cdom;
10574: &devalidate_cache_new('crschange',$hashid);
10575: }
10576:
10577: # ------------------------------------------------- Update symbolic store links
10578:
10579: sub symblist {
10580: my ($mapname,%newhash)=@_;
10581: $mapname=&deversion(&declutter($mapname));
10582: my %hash;
10583: if (($env{'request.course.fn'}) && (%newhash)) {
10584: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10585: &GDBM_WRCREAT(),0640)) {
10586: foreach my $url (keys(%newhash)) {
10587: next if ($url eq 'last_known'
10588: && $env{'form.no_update_last_known'});
10589: $hash{declutter($url)}=&encode_symb($mapname,
10590: $newhash{$url}->[1],
10591: $newhash{$url}->[0]);
10592: }
10593: if (untie(%hash)) {
10594: return 'ok';
10595: }
10596: }
10597: }
10598: return 'error';
10599: }
10600:
10601: # --------------------------------------------------------------- Verify a symb
10602:
10603: sub symbverify {
10604: my ($symb,$thisurl,$encstate)=@_;
10605: my $thisfn=$thisurl;
10606: $thisfn=&declutter($thisfn);
10607: # direct jump to resource in page or to a sequence - will construct own symbs
10608: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10609: # check URL part
10610: my ($map,$resid,$url)=&decode_symb($symb);
10611:
10612: unless ($url eq $thisfn) { return 0; }
10613:
10614: $symb=&symbclean($symb);
10615: $thisurl=&deversion($thisurl);
10616: $thisfn=&deversion($thisfn);
10617:
10618: my %bighash;
10619: my $okay=0;
10620:
10621: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10622: &GDBM_READER(),0640)) {
10623: my $noclutter;
10624: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10625: $thisurl =~ s/\?.+$//;
10626: if ($map =~ m{^uploaded/.+\.page$}) {
10627: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10628: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10629: $noclutter = 1;
10630: }
10631: }
10632: my $ids;
10633: if ($noclutter) {
10634: $ids=$bighash{'ids_'.$thisurl};
10635: } else {
10636: $ids=$bighash{'ids_'.&clutter($thisurl)};
10637: }
10638: unless ($ids) {
10639: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10640: $ids=$bighash{$idkey};
10641: }
10642: if ($ids) {
10643: # ------------------------------------------------------------------- Has ID(s)
10644: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10645: $symb =~ s/\?.+$//;
10646: }
10647: foreach my $id (split(/\,/,$ids)) {
10648: my ($mapid,$resid)=split(/\./,$id);
10649: if (
10650: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10651: eq $symb) {
10652: if (ref($encstate)) {
10653: $$encstate = $bighash{'encrypted_'.$id};
10654: }
10655: if (($env{'request.role.adv'}) ||
10656: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10657: ($thisurl eq '/adm/navmaps')) {
10658: $okay=1;
10659: last;
10660: }
10661: }
10662: }
10663: }
10664: untie(%bighash);
10665: }
10666: return $okay;
10667: }
10668:
10669: # --------------------------------------------------------------- Clean-up symb
10670:
10671: sub symbclean {
10672: my $symb=shift;
10673: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10674: # remove version from map
10675: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10676:
10677: # remove version from URL
10678: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10679:
10680: # remove wrapper
10681:
10682: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10683: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10684: return $symb;
10685: }
10686:
10687: # ---------------------------------------------- Split symb to find map and url
10688:
10689: sub encode_symb {
10690: my ($map,$resid,$url)=@_;
10691: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10692: }
10693:
10694: sub decode_symb {
10695: my $symb=shift;
10696: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10697: my ($map,$resid,$url)=split(/___/,$symb);
10698: return (&fixversion($map),$resid,&fixversion($url));
10699: }
10700:
10701: sub fixversion {
10702: my $fn=shift;
10703: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10704: my %bighash;
10705: my $uri=&clutter($fn);
10706: my $key=$env{'request.course.id'}.'_'.$uri;
10707: # is this cached?
10708: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10709: if (defined($cached)) { return $result; }
10710: # unfortunately not cached, or expired
10711: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10712: &GDBM_READER(),0640)) {
10713: if ($bighash{'version_'.$uri}) {
10714: my $version=$bighash{'version_'.$uri};
10715: unless (($version eq 'mostrecent') ||
10716: ($version==&getversion($uri))) {
10717: $uri=~s/\.(\w+)$/\.$version\.$1/;
10718: }
10719: }
10720: untie %bighash;
10721: }
10722: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10723: }
10724:
10725: sub deversion {
10726: my $url=shift;
10727: $url=~s/\.\d+\.(\w+)$/\.$1/;
10728: return $url;
10729: }
10730:
10731: # ------------------------------------------------------ Return symb list entry
10732:
10733: sub symbread {
10734: my ($thisfn,$donotrecurse)=@_;
10735: my $cache_str;
10736: if ($thisfn ne '') {
10737: $cache_str='request.symbread.cached.'.$thisfn;
10738: if ($env{$cache_str} ne '') {
10739: return $env{$cache_str};
10740: }
10741: } else {
10742: # no filename provided? try from environment
10743: if ($env{'request.symb'}) {
10744: return $env{$cache_str}=&symbclean($env{'request.symb'});
10745: }
10746: $thisfn=$env{'request.filename'};
10747: }
10748: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10749: # is that filename actually a symb? Verify, clean, and return
10750: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10751: if (&symbverify($thisfn,$1)) {
10752: return $env{$cache_str}=&symbclean($thisfn);
10753: }
10754: }
10755: $thisfn=declutter($thisfn);
10756: my %hash;
10757: my %bighash;
10758: my $syval='';
10759: if (($env{'request.course.fn'}) && ($thisfn)) {
10760: my $targetfn = $thisfn;
10761: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10762: $targetfn = 'adm/wrapper/'.$thisfn;
10763: }
10764: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10765: $targetfn=$1;
10766: }
10767: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10768: &GDBM_READER(),0640)) {
10769: $syval=$hash{$targetfn};
10770: untie(%hash);
10771: }
10772: # ---------------------------------------------------------- There was an entry
10773: if ($syval) {
10774: #unless ($syval=~/\_\d+$/) {
10775: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10776: #&appenv({'request.ambiguous' => $thisfn});
10777: #return $env{$cache_str}='';
10778: #}
10779: #$syval.=$1;
10780: #}
10781: } else {
10782: # ------------------------------------------------------- Was not in symb table
10783: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10784: &GDBM_READER(),0640)) {
10785: # ---------------------------------------------- Get ID(s) for current resource
10786: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10787: unless ($ids) {
10788: $ids=$bighash{'ids_/'.$thisfn};
10789: }
10790: unless ($ids) {
10791: # alias?
10792: $ids=$bighash{'mapalias_'.$thisfn};
10793: }
10794: if ($ids) {
10795: # ------------------------------------------------------------------- Has ID(s)
10796: my @possibilities=split(/\,/,$ids);
10797: if ($#possibilities==0) {
10798: # ----------------------------------------------- There is only one possibility
10799: my ($mapid,$resid)=split(/\./,$ids);
10800: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10801: $resid,$thisfn);
10802: } elsif (!$donotrecurse) {
10803: # ------------------------------------------ There is more than one possibility
10804: my $realpossible=0;
10805: foreach my $id (@possibilities) {
10806: my $file=$bighash{'src_'.$id};
10807: if (&allowed('bre',$file)) {
10808: my ($mapid,$resid)=split(/\./,$id);
10809: if ($bighash{'map_type_'.$mapid} ne 'page') {
10810: $realpossible++;
10811: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10812: $resid,$thisfn);
10813: }
10814: }
10815: }
10816: if ($realpossible!=1) { $syval=''; }
10817: } else {
10818: $syval='';
10819: }
10820: }
10821: untie(%bighash)
10822: }
10823: }
10824: if ($syval) {
10825: return $env{$cache_str}=$syval;
10826: }
10827: }
10828: &appenv({'request.ambiguous' => $thisfn});
10829: return $env{$cache_str}='';
10830: }
10831:
10832: # ---------------------------------------------------------- Return random seed
10833:
10834: sub numval {
10835: my $txt=shift;
10836: $txt=~tr/A-J/0-9/;
10837: $txt=~tr/a-j/0-9/;
10838: $txt=~tr/K-T/0-9/;
10839: $txt=~tr/k-t/0-9/;
10840: $txt=~tr/U-Z/0-5/;
10841: $txt=~tr/u-z/0-5/;
10842: $txt=~s/\D//g;
10843: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10844: return int($txt);
10845: }
10846:
10847: sub numval2 {
10848: my $txt=shift;
10849: $txt=~tr/A-J/0-9/;
10850: $txt=~tr/a-j/0-9/;
10851: $txt=~tr/K-T/0-9/;
10852: $txt=~tr/k-t/0-9/;
10853: $txt=~tr/U-Z/0-5/;
10854: $txt=~tr/u-z/0-5/;
10855: $txt=~s/\D//g;
10856: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10857: my $total;
10858: foreach my $val (@txts) { $total+=$val; }
10859: if ($_64bit) { if ($total > 2**32) { return -1; } }
10860: return int($total);
10861: }
10862:
10863: sub numval3 {
10864: use integer;
10865: my $txt=shift;
10866: $txt=~tr/A-J/0-9/;
10867: $txt=~tr/a-j/0-9/;
10868: $txt=~tr/K-T/0-9/;
10869: $txt=~tr/k-t/0-9/;
10870: $txt=~tr/U-Z/0-5/;
10871: $txt=~tr/u-z/0-5/;
10872: $txt=~s/\D//g;
10873: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10874: my $total;
10875: foreach my $val (@txts) { $total+=$val; }
10876: if ($_64bit) { $total=(($total<<32)>>32); }
10877: return $total;
10878: }
10879:
10880: sub digest {
10881: my ($data)=@_;
10882: my $digest=&Digest::MD5::md5($data);
10883: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10884: my ($e,$f);
10885: {
10886: use integer;
10887: $e=($a+$b);
10888: $f=($c+$d);
10889: if ($_64bit) {
10890: $e=(($e<<32)>>32);
10891: $f=(($f<<32)>>32);
10892: }
10893: }
10894: if (wantarray) {
10895: return ($e,$f);
10896: } else {
10897: my $g;
10898: {
10899: use integer;
10900: $g=($e+$f);
10901: if ($_64bit) {
10902: $g=(($g<<32)>>32);
10903: }
10904: }
10905: return $g;
10906: }
10907: }
10908:
10909: sub latest_rnd_algorithm_id {
10910: return '64bit5';
10911: }
10912:
10913: sub get_rand_alg {
10914: my ($courseid)=@_;
10915: if (!$courseid) { $courseid=(&whichuser())[1]; }
10916: if ($courseid) {
10917: return $env{"course.$courseid.rndseed"};
10918: }
10919: return &latest_rnd_algorithm_id();
10920: }
10921:
10922: sub validCODE {
10923: my ($CODE)=@_;
10924: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10925: return 0;
10926: }
10927:
10928: sub getCODE {
10929: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10930: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10931: defined($Apache::lonhomework::parsing_a_task) ) &&
10932: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10933: return $Apache::lonhomework::history{'resource.CODE'};
10934: }
10935: return undef;
10936: }
10937: #
10938: # Determines the random seed for a specific context:
10939: #
10940: # parameters:
10941: # symb - in course context the symb for the seed.
10942: # course_id - The course id of the form domain_coursenum.
10943: # domain - Domain for the user.
10944: # course - Course for the user.
10945: # cenv - environment of the course.
10946: #
10947: # NOTE:
10948: # All parameters are picked out of the environment if missing
10949: # or not defined.
10950: # If a symb cannot be determined the current time is used instead.
10951: #
10952: # For a given well defined symb, courside, domain, username,
10953: # and course environment, the seed is reproducible.
10954: #
10955: sub rndseed {
10956: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10957: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10958: if (!defined($symb)) {
10959: unless ($symb=$wsymb) { return time; }
10960: }
10961: if (!defined $courseid) {
10962: $courseid=$wcourseid;
10963: }
10964: if (!defined $domain) { $domain=$wdomain; }
10965: if (!defined $username) { $username=$wusername }
10966:
10967: my $which;
10968: if (defined($cenv->{'rndseed'})) {
10969: $which = $cenv->{'rndseed'};
10970: } else {
10971: $which =&get_rand_alg($courseid);
10972: }
10973: if (defined(&getCODE())) {
10974:
10975: if ($which eq '64bit5') {
10976: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10977: } elsif ($which eq '64bit4') {
10978: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10979: } else {
10980: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10981: }
10982: } elsif ($which eq '64bit5') {
10983: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10984: } elsif ($which eq '64bit4') {
10985: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10986: } elsif ($which eq '64bit3') {
10987: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10988: } elsif ($which eq '64bit2') {
10989: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10990: } elsif ($which eq '64bit') {
10991: return &rndseed_64bit($symb,$courseid,$domain,$username);
10992: }
10993: return &rndseed_32bit($symb,$courseid,$domain,$username);
10994: }
10995:
10996: sub rndseed_32bit {
10997: my ($symb,$courseid,$domain,$username)=@_;
10998: {
10999: use integer;
11000: my $symbchck=unpack("%32C*",$symb) << 27;
11001: my $symbseed=numval($symb) << 22;
11002: my $namechck=unpack("%32C*",$username) << 17;
11003: my $nameseed=numval($username) << 12;
11004: my $domainseed=unpack("%32C*",$domain) << 7;
11005: my $courseseed=unpack("%32C*",$courseid);
11006: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11007: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11008: #&logthis("rndseed :$num:$symb");
11009: if ($_64bit) { $num=(($num<<32)>>32); }
11010: return $num;
11011: }
11012: }
11013:
11014: sub rndseed_64bit {
11015: my ($symb,$courseid,$domain,$username)=@_;
11016: {
11017: use integer;
11018: my $symbchck=unpack("%32S*",$symb) << 21;
11019: my $symbseed=numval($symb) << 10;
11020: my $namechck=unpack("%32S*",$username);
11021:
11022: my $nameseed=numval($username) << 21;
11023: my $domainseed=unpack("%32S*",$domain) << 10;
11024: my $courseseed=unpack("%32S*",$courseid);
11025:
11026: my $num1=$symbchck+$symbseed+$namechck;
11027: my $num2=$nameseed+$domainseed+$courseseed;
11028: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11029: #&logthis("rndseed :$num:$symb");
11030: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11031: return "$num1,$num2";
11032: }
11033: }
11034:
11035: sub rndseed_64bit2 {
11036: my ($symb,$courseid,$domain,$username)=@_;
11037: {
11038: use integer;
11039: # strings need to be an even # of cahracters long, it it is odd the
11040: # last characters gets thrown away
11041: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11042: my $symbseed=numval($symb) << 10;
11043: my $namechck=unpack("%32S*",$username.' ');
11044:
11045: my $nameseed=numval($username) << 21;
11046: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11047: my $courseseed=unpack("%32S*",$courseid.' ');
11048:
11049: my $num1=$symbchck+$symbseed+$namechck;
11050: my $num2=$nameseed+$domainseed+$courseseed;
11051: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11052: #&logthis("rndseed :$num:$symb");
11053: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11054: return "$num1,$num2";
11055: }
11056: }
11057:
11058: sub rndseed_64bit3 {
11059: my ($symb,$courseid,$domain,$username)=@_;
11060: {
11061: use integer;
11062: # strings need to be an even # of cahracters long, it it is odd the
11063: # last characters gets thrown away
11064: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11065: my $symbseed=numval2($symb) << 10;
11066: my $namechck=unpack("%32S*",$username.' ');
11067:
11068: my $nameseed=numval2($username) << 21;
11069: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11070: my $courseseed=unpack("%32S*",$courseid.' ');
11071:
11072: my $num1=$symbchck+$symbseed+$namechck;
11073: my $num2=$nameseed+$domainseed+$courseseed;
11074: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11075: #&logthis("rndseed :$num1:$num2:$_64bit");
11076: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11077:
11078: return "$num1:$num2";
11079: }
11080: }
11081:
11082: sub rndseed_64bit4 {
11083: my ($symb,$courseid,$domain,$username)=@_;
11084: {
11085: use integer;
11086: # strings need to be an even # of cahracters long, it it is odd the
11087: # last characters gets thrown away
11088: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11089: my $symbseed=numval3($symb) << 10;
11090: my $namechck=unpack("%32S*",$username.' ');
11091:
11092: my $nameseed=numval3($username) << 21;
11093: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11094: my $courseseed=unpack("%32S*",$courseid.' ');
11095:
11096: my $num1=$symbchck+$symbseed+$namechck;
11097: my $num2=$nameseed+$domainseed+$courseseed;
11098: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11099: #&logthis("rndseed :$num1:$num2:$_64bit");
11100: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11101:
11102: return "$num1:$num2";
11103: }
11104: }
11105:
11106: sub rndseed_64bit5 {
11107: my ($symb,$courseid,$domain,$username)=@_;
11108: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11109: return "$num1:$num2";
11110: }
11111:
11112: sub rndseed_CODE_64bit {
11113: my ($symb,$courseid,$domain,$username)=@_;
11114: {
11115: use integer;
11116: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11117: my $symbseed=numval2($symb);
11118: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11119: my $CODEseed=numval(&getCODE());
11120: my $courseseed=unpack("%32S*",$courseid.' ');
11121: my $num1=$symbseed+$CODEchck;
11122: my $num2=$CODEseed+$courseseed+$symbchck;
11123: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11124: #&logthis("rndseed :$num1:$num2:$symb");
11125: if ($_64bit) { $num1=(($num1<<32)>>32); }
11126: if ($_64bit) { $num2=(($num2<<32)>>32); }
11127: return "$num1:$num2";
11128: }
11129: }
11130:
11131: sub rndseed_CODE_64bit4 {
11132: my ($symb,$courseid,$domain,$username)=@_;
11133: {
11134: use integer;
11135: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11136: my $symbseed=numval3($symb);
11137: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11138: my $CODEseed=numval3(&getCODE());
11139: my $courseseed=unpack("%32S*",$courseid.' ');
11140: my $num1=$symbseed+$CODEchck;
11141: my $num2=$CODEseed+$courseseed+$symbchck;
11142: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11143: #&logthis("rndseed :$num1:$num2:$symb");
11144: if ($_64bit) { $num1=(($num1<<32)>>32); }
11145: if ($_64bit) { $num2=(($num2<<32)>>32); }
11146: return "$num1:$num2";
11147: }
11148: }
11149:
11150: sub rndseed_CODE_64bit5 {
11151: my ($symb,$courseid,$domain,$username)=@_;
11152: my $code = &getCODE();
11153: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11154: return "$num1:$num2";
11155: }
11156:
11157: sub setup_random_from_rndseed {
11158: my ($rndseed)=@_;
11159: if ($rndseed =~/([,:])/) {
11160: my ($num1,$num2)=split(/[,:]/,$rndseed);
11161: &Math::Random::random_set_seed(abs($num1),abs($num2));
11162: } else {
11163: &Math::Random::random_set_seed_from_phrase($rndseed);
11164: }
11165: }
11166:
11167: sub latest_receipt_algorithm_id {
11168: return 'receipt3';
11169: }
11170:
11171: sub recunique {
11172: my $fucourseid=shift;
11173: my $unique;
11174: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11175: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11176: $unique=$env{"course.$fucourseid.internal.encseed"};
11177: } else {
11178: $unique=$perlvar{'lonReceipt'};
11179: }
11180: return unpack("%32C*",$unique);
11181: }
11182:
11183: sub recprefix {
11184: my $fucourseid=shift;
11185: my $prefix;
11186: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11187: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11188: $prefix=$env{"course.$fucourseid.internal.encpref"};
11189: } else {
11190: $prefix=$perlvar{'lonHostID'};
11191: }
11192: return unpack("%32C*",$prefix);
11193: }
11194:
11195: sub ireceipt {
11196: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11197:
11198: my $return =&recprefix($fucourseid).'-';
11199:
11200: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11201: $env{'request.state'} eq 'construct') {
11202: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11203: return $return;
11204: }
11205:
11206: my $cuname=unpack("%32C*",$funame);
11207: my $cudom=unpack("%32C*",$fudom);
11208: my $cucourseid=unpack("%32C*",$fucourseid);
11209: my $cusymb=unpack("%32C*",$fusymb);
11210: my $cunique=&recunique($fucourseid);
11211: my $cpart=unpack("%32S*",$part);
11212: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11213:
11214: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11215:
11216: $return.= ($cunique%$cuname+
11217: $cunique%$cudom+
11218: $cusymb%$cuname+
11219: $cusymb%$cudom+
11220: $cucourseid%$cuname+
11221: $cucourseid%$cudom+
11222: $cpart%$cuname+
11223: $cpart%$cudom);
11224: } else {
11225: $return.= ($cunique%$cuname+
11226: $cunique%$cudom+
11227: $cusymb%$cuname+
11228: $cusymb%$cudom+
11229: $cucourseid%$cuname+
11230: $cucourseid%$cudom);
11231: }
11232: return $return;
11233: }
11234:
11235: sub receipt {
11236: my ($part)=@_;
11237: my ($symb,$courseid,$domain,$name) = &whichuser();
11238: return &ireceipt($name,$domain,$courseid,$symb,$part);
11239: }
11240:
11241: sub whichuser {
11242: my ($passedsymb)=@_;
11243: my ($symb,$courseid,$domain,$name,$publicuser);
11244: if (defined($env{'form.grade_symb'})) {
11245: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11246: my $allowed=&allowed('vgr',$tmp_courseid);
11247: if (!$allowed &&
11248: exists($env{'request.course.sec'}) &&
11249: $env{'request.course.sec'} !~ /^\s*$/) {
11250: $allowed=&allowed('vgr',$tmp_courseid.
11251: '/'.$env{'request.course.sec'});
11252: }
11253: if ($allowed) {
11254: ($symb)=&get_env_multiple('form.grade_symb');
11255: $courseid=$tmp_courseid;
11256: ($domain)=&get_env_multiple('form.grade_domain');
11257: ($name)=&get_env_multiple('form.grade_username');
11258: return ($symb,$courseid,$domain,$name,$publicuser);
11259: }
11260: }
11261: if (!$passedsymb) {
11262: $symb=&symbread();
11263: } else {
11264: $symb=$passedsymb;
11265: }
11266: $courseid=$env{'request.course.id'};
11267: $domain=$env{'user.domain'};
11268: $name=$env{'user.name'};
11269: if ($name eq 'public' && $domain eq 'public') {
11270: if (!defined($env{'form.username'})) {
11271: $env{'form.username'}.=time.rand(10000000);
11272: }
11273: $name.=$env{'form.username'};
11274: }
11275: return ($symb,$courseid,$domain,$name,$publicuser);
11276:
11277: }
11278:
11279: # ------------------------------------------------------------ Serves up a file
11280: # returns either the contents of the file or
11281: # -1 if the file doesn't exist
11282: #
11283: # if the target is a file that was uploaded via DOCS,
11284: # a check will be made to see if a current copy exists on the local server,
11285: # if it does this will be served, otherwise a copy will be retrieved from
11286: # the home server for the course and stored in /home/httpd/html/userfiles on
11287: # the local server.
11288:
11289: sub getfile {
11290: my ($file) = @_;
11291: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11292: &repcopy($file);
11293: return &readfile($file);
11294: }
11295:
11296: sub repcopy_userfile {
11297: my ($file)=@_;
11298: my $londocroot = $perlvar{'lonDocRoot'};
11299: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11300: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11301: my ($cdom,$cnum,$filename) =
11302: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11303: my $uri="/uploaded/$cdom/$cnum/$filename";
11304: if (-e "$file") {
11305: # we already have a local copy, check it out
11306: my @fileinfo = stat($file);
11307: my $rtncode;
11308: my $info;
11309: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11310: if ($lwpresp ne 'ok') {
11311: # there is no such file anymore, even though we had a local copy
11312: if ($rtncode eq '404') {
11313: unlink($file);
11314: }
11315: return -1;
11316: }
11317: if ($info < $fileinfo[9]) {
11318: # nice, the file we have is up-to-date, just say okay
11319: return 'ok';
11320: } else {
11321: # the file is outdated, get rid of it
11322: unlink($file);
11323: }
11324: }
11325: # one way or the other, at this point, we don't have the file
11326: # construct the correct path for the file
11327: my @parts = ($cdom,$cnum);
11328: if ($filename =~ m|^(.+)/[^/]+$|) {
11329: push @parts, split(/\//,$1);
11330: }
11331: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11332: foreach my $part (@parts) {
11333: $path .= '/'.$part;
11334: if (!-e $path) {
11335: mkdir($path,0770);
11336: }
11337: }
11338: # now the path exists for sure
11339: # get a user agent
11340: my $ua=new LWP::UserAgent;
11341: my $transferfile=$file.'.in.transfer';
11342: # FIXME: this should flock
11343: if (-e $transferfile) { return 'ok'; }
11344: my $request;
11345: $uri=~s/^\///;
11346: my $homeserver = &homeserver($cnum,$cdom);
11347: my $protocol = $protocol{$homeserver};
11348: $protocol = 'http' if ($protocol ne 'https');
11349: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11350: my $response=$ua->request($request,$transferfile);
11351: # did it work?
11352: if ($response->is_error()) {
11353: unlink($transferfile);
11354: &logthis("Userfile repcopy failed for $uri");
11355: return -1;
11356: }
11357: # worked, rename the transfer file
11358: rename($transferfile,$file);
11359: return 'ok';
11360: }
11361:
11362: sub tokenwrapper {
11363: my $uri=shift;
11364: $uri=~s|^https?\://([^/]+)||;
11365: $uri=~s|^/||;
11366: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11367: my $token=$1;
11368: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11369: if ($udom && $uname && $file) {
11370: $file=~s|(\?\.*)*$||;
11371: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11372: my $homeserver = &homeserver($uname,$udom);
11373: my $protocol = $protocol{$homeserver};
11374: $protocol = 'http' if ($protocol ne 'https');
11375: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11376: (($uri=~/\?/)?'&':'?').'token='.$token.
11377: '&tokenissued='.$perlvar{'lonHostID'};
11378: } else {
11379: return '/adm/notfound.html';
11380: }
11381: }
11382:
11383: # call with reqtype HEAD: get last modification time
11384: # call with reqtype GET: get the file contents
11385: # Do not call this with reqtype GET for large files! It loads everything into memory
11386: #
11387: sub getuploaded {
11388: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11389: $uri=~s/^\///;
11390: my $homeserver = &homeserver($cnum,$cdom);
11391: my $protocol = $protocol{$homeserver};
11392: $protocol = 'http' if ($protocol ne 'https');
11393: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11394: my $ua=new LWP::UserAgent;
11395: my $request=new HTTP::Request($reqtype,$uri);
11396: my $response=$ua->request($request);
11397: $$rtncode = $response->code;
11398: if (! $response->is_success()) {
11399: return 'failed';
11400: }
11401: if ($reqtype eq 'HEAD') {
11402: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11403: } elsif ($reqtype eq 'GET') {
11404: $$info = $response->content;
11405: }
11406: return 'ok';
11407: }
11408:
11409: sub readfile {
11410: my $file = shift;
11411: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11412: my $fh;
11413: open($fh,"<$file");
11414: my $a='';
11415: while (my $line = <$fh>) { $a .= $line; }
11416: return $a;
11417: }
11418:
11419: sub filelocation {
11420: my ($dir,$file) = @_;
11421: my $location;
11422: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11423:
11424: if ($file =~ m-^/adm/-) {
11425: $file=~s-^/adm/wrapper/-/-;
11426: $file=~s-^/adm/coursedocs/showdoc/-/-;
11427: }
11428:
11429: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11430: $location = $file;
11431: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11432: my ($udom,$uname,$filename)=
11433: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11434: my $home=&homeserver($uname,$udom);
11435: my $is_me=0;
11436: my @ids=¤t_machine_ids();
11437: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11438: if ($is_me) {
11439: $location=propath($udom,$uname).'/userfiles/'.$filename;
11440: } else {
11441: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11442: $udom.'/'.$uname.'/'.$filename;
11443: }
11444: } elsif ($file =~ m-^/adm/-) {
11445: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11446: } else {
11447: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11448: $file=~s:^/(res|priv)/:/:;
11449: my $space=$1;
11450: if ( !( $file =~ m:^/:) ) {
11451: $location = $dir. '/'.$file;
11452: } else {
11453: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11454: }
11455: }
11456: $location=~s://+:/:g; # remove duplicate /
11457: while ($location=~m{/\.\./}) {
11458: if ($location =~ m{/[^/]+/\.\./}) {
11459: $location=~ s{/[^/]+/\.\./}{/}g;
11460: } else {
11461: $location=~ s{/\.\./}{/}g;
11462: }
11463: } #remove dir/..
11464: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11465: return $location;
11466: }
11467:
11468: sub hreflocation {
11469: my ($dir,$file)=@_;
11470: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11471: $file=filelocation($dir,$file);
11472: } elsif ($file=~m-^/adm/-) {
11473: $file=~s-^/adm/wrapper/-/-;
11474: $file=~s-^/adm/coursedocs/showdoc/-/-;
11475: }
11476: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11477: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11478: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11479: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11480: {/uploaded/$1/$2/}x;
11481: }
11482: if ($file=~ m{^/userfiles/}) {
11483: $file =~ s{^/userfiles/}{/uploaded/};
11484: }
11485: return $file;
11486: }
11487:
11488:
11489:
11490:
11491:
11492: sub current_machine_domains {
11493: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11494: }
11495:
11496: sub machine_domains {
11497: my ($hostname) = @_;
11498: my @domains;
11499: my %hostname = &all_hostnames();
11500: while( my($id, $name) = each(%hostname)) {
11501: # &logthis("-$id-$name-$hostname-");
11502: if ($hostname eq $name) {
11503: push(@domains,&host_domain($id));
11504: }
11505: }
11506: return @domains;
11507: }
11508:
11509: sub current_machine_ids {
11510: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11511: }
11512:
11513: sub machine_ids {
11514: my ($hostname) = @_;
11515: $hostname ||= &hostname($perlvar{'lonHostID'});
11516: my @ids;
11517: my %name_to_host = &all_names();
11518: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11519: return @{ $name_to_host{$hostname} };
11520: }
11521: return;
11522: }
11523:
11524: sub additional_machine_domains {
11525: my @domains;
11526: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11527: while( my $line = <$fh>) {
11528: $line =~ s/\s//g;
11529: push(@domains,$line);
11530: }
11531: return @domains;
11532: }
11533:
11534: sub default_login_domain {
11535: my $domain = $perlvar{'lonDefDomain'};
11536: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11537: foreach my $posdom (¤t_machine_domains(),
11538: &additional_machine_domains()) {
11539: if (lc($posdom) eq lc($testdomain)) {
11540: $domain=$posdom;
11541: last;
11542: }
11543: }
11544: return $domain;
11545: }
11546:
11547: # ------------------------------------------------------------- Declutters URLs
11548:
11549: sub declutter {
11550: my $thisfn=shift;
11551: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11552: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11553: $thisfn=~s/^\///;
11554: $thisfn=~s|^adm/wrapper/||;
11555: $thisfn=~s|^adm/coursedocs/showdoc/||;
11556: $thisfn=~s/^res\///;
11557: $thisfn=~s/^priv\///;
11558: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11559: $thisfn=~s/\?.+$//;
11560: }
11561: return $thisfn;
11562: }
11563:
11564: # ------------------------------------------------------------- Clutter up URLs
11565:
11566: sub clutter {
11567: my $thisfn='/'.&declutter(shift);
11568: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11569: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11570: $thisfn='/res'.$thisfn;
11571: }
11572: if ($thisfn !~m|^/adm|) {
11573: if ($thisfn =~ m|^/ext/|) {
11574: $thisfn='/adm/wrapper'.$thisfn;
11575: } else {
11576: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11577: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11578: if ($embstyle eq 'ssi'
11579: || ($embstyle eq 'hdn')
11580: || ($embstyle eq 'rat')
11581: || ($embstyle eq 'prv')
11582: || ($embstyle eq 'ign')) {
11583: #do nothing with these
11584: } elsif (($embstyle eq 'img')
11585: || ($embstyle eq 'emb')
11586: || ($embstyle eq 'wrp')) {
11587: $thisfn='/adm/wrapper'.$thisfn;
11588: } elsif ($embstyle eq 'unk'
11589: && $thisfn!~/\.(sequence|page)$/) {
11590: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11591: } else {
11592: # &logthis("Got a blank emb style");
11593: }
11594: }
11595: }
11596: return $thisfn;
11597: }
11598:
11599: sub clutter_with_no_wrapper {
11600: my $uri = &clutter(shift);
11601: if ($uri =~ m-^/adm/-) {
11602: $uri =~ s-^/adm/wrapper/-/-;
11603: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11604: }
11605: return $uri;
11606: }
11607:
11608: sub freeze_escape {
11609: my ($value)=@_;
11610: if (ref($value)) {
11611: $value=&nfreeze($value);
11612: return '__FROZEN__'.&escape($value);
11613: }
11614: return &escape($value);
11615: }
11616:
11617:
11618: sub thaw_unescape {
11619: my ($value)=@_;
11620: if ($value =~ /^__FROZEN__/) {
11621: substr($value,0,10,undef);
11622: $value=&unescape($value);
11623: return &thaw($value);
11624: }
11625: return &unescape($value);
11626: }
11627:
11628: sub correct_line_ends {
11629: my ($result)=@_;
11630: $$result =~s/\r\n/\n/mg;
11631: $$result =~s/\r/\n/mg;
11632: }
11633: # ================================================================ Main Program
11634:
11635: sub goodbye {
11636: &logthis("Starting Shut down");
11637: #not converted to using infrastruture and probably shouldn't be
11638: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11639: #converted
11640: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11641: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11642: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11643: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11644: #1.1 only
11645: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11646: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11647: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11648: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11649: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11650: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11651: &logthis(sprintf("%-20s is %s",'hits',$hits));
11652: &flushcourselogs();
11653: &logthis("Shutting down");
11654: }
11655:
11656: sub get_dns {
11657: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11658: if (!$ignore_cache) {
11659: my ($content,$cached)=
11660: &Apache::lonnet::is_cached_new('dns',$url);
11661: if ($cached) {
11662: &$func($content,$hashref);
11663: return;
11664: }
11665: }
11666:
11667: my %alldns;
11668: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11669: foreach my $dns (<$config>) {
11670: next if ($dns !~ /^\^(\S*)/x);
11671: my $line = $1;
11672: my ($host,$protocol) = split(/:/,$line);
11673: if ($protocol ne 'https') {
11674: $protocol = 'http';
11675: }
11676: $alldns{$host} = $protocol;
11677: }
11678: while (%alldns) {
11679: my ($dns) = keys(%alldns);
11680: my $ua=new LWP::UserAgent;
11681: $ua->timeout(30);
11682: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11683: my $response=$ua->request($request);
11684: delete($alldns{$dns});
11685: next if ($response->is_error());
11686: my @content = split("\n",$response->content);
11687: unless ($nocache) {
11688: &do_cache_new('dns',$url,\@content,30*24*60*60);
11689: }
11690: &$func(\@content,$hashref);
11691: return;
11692: }
11693: close($config);
11694: my $which = (split('/',$url))[3];
11695: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11696: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11697: my @content = <$config>;
11698: &$func(\@content,$hashref);
11699: return;
11700: }
11701:
11702: # ------------------------------------------------------Get DNS checksums file
11703: sub parse_dns_checksums_tab {
11704: my ($lines,$hashref) = @_;
11705: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11706: my $loncaparev = &get_server_loncaparev($machine_dom);
11707: my ($release,$timestamp) = split(/\-/,$loncaparev);
11708: my (%chksum,%revnum);
11709: if (ref($lines) eq 'ARRAY') {
11710: chomp(@{$lines});
11711: my $version = shift(@{$lines});
11712: if ($version eq $release) {
11713: foreach my $line (@{$lines}) {
11714: my ($file,$version,$shasum) = split(/,/,$line);
11715: $chksum{$file} = $shasum;
11716: $revnum{$file} = $version;
11717: }
11718: if (ref($hashref) eq 'HASH') {
11719: %{$hashref} = (
11720: sums => \%chksum,
11721: versions => \%revnum,
11722: );
11723: }
11724: }
11725: }
11726: return;
11727: }
11728:
11729: sub fetch_dns_checksums {
11730: my %checksums;
11731: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11732: my $loncaparev = &get_server_loncaparev($machine_dom);
11733: my ($release,$timestamp) = split(/\-/,$loncaparev);
11734: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
11735: \%checksums);
11736: return \%checksums;
11737: }
11738:
11739: # ------------------------------------------------------------ Read domain file
11740: {
11741: my $loaded;
11742: my %domain;
11743:
11744: sub parse_domain_tab {
11745: my ($lines) = @_;
11746: foreach my $line (@$lines) {
11747: next if ($line =~ /^(\#|\s*$ )/x);
11748:
11749: chomp($line);
11750: my ($name,@elements) = split(/:/,$line,9);
11751: my %this_domain;
11752: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11753: 'lang_def', 'city', 'longi', 'lati',
11754: 'primary') {
11755: $this_domain{$field} = shift(@elements);
11756: }
11757: $domain{$name} = \%this_domain;
11758: }
11759: }
11760:
11761: sub reset_domain_info {
11762: undef($loaded);
11763: undef(%domain);
11764: }
11765:
11766: sub load_domain_tab {
11767: my ($ignore_cache) = @_;
11768: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11769: my $fh;
11770: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11771: my @lines = <$fh>;
11772: &parse_domain_tab(\@lines);
11773: }
11774: close($fh);
11775: $loaded = 1;
11776: }
11777:
11778: sub domain {
11779: &load_domain_tab() if (!$loaded);
11780:
11781: my ($name,$what) = @_;
11782: return if ( !exists($domain{$name}) );
11783:
11784: if (!$what) {
11785: return $domain{$name}{'description'};
11786: }
11787: return $domain{$name}{$what};
11788: }
11789:
11790: sub domain_info {
11791: &load_domain_tab() if (!$loaded);
11792: return %domain;
11793: }
11794:
11795: }
11796:
11797:
11798: # ------------------------------------------------------------- Read hosts file
11799: {
11800: my %hostname;
11801: my %hostdom;
11802: my %libserv;
11803: my $loaded;
11804: my %name_to_host;
11805: my %internetdom;
11806: my %LC_dns_serv;
11807:
11808: sub parse_hosts_tab {
11809: my ($file) = @_;
11810: foreach my $configline (@$file) {
11811: next if ($configline =~ /^(\#|\s*$ )/x);
11812: chomp($configline);
11813: if ($configline =~ /^\^/) {
11814: if ($configline =~ /^\^([\w.\-]+)/) {
11815: $LC_dns_serv{$1} = 1;
11816: }
11817: next;
11818: }
11819: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11820: $name=~s/\s//g;
11821: if ($id && $domain && $role && $name) {
11822: $hostname{$id}=$name;
11823: push(@{$name_to_host{$name}}, $id);
11824: $hostdom{$id}=$domain;
11825: if ($role eq 'library') { $libserv{$id}=$name; }
11826: if (defined($protocol)) {
11827: if ($protocol eq 'https') {
11828: $protocol{$id} = $protocol;
11829: } else {
11830: $protocol{$id} = 'http';
11831: }
11832: } else {
11833: $protocol{$id} = 'http';
11834: }
11835: if (defined($intdom)) {
11836: $internetdom{$id} = $intdom;
11837: }
11838: }
11839: }
11840: }
11841:
11842: sub reset_hosts_info {
11843: &purge_remembered();
11844: &reset_domain_info();
11845: &reset_hosts_ip_info();
11846: undef(%name_to_host);
11847: undef(%hostname);
11848: undef(%hostdom);
11849: undef(%libserv);
11850: undef($loaded);
11851: }
11852:
11853: sub load_hosts_tab {
11854: my ($ignore_cache) = @_;
11855: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11856: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11857: my @config = <$config>;
11858: &parse_hosts_tab(\@config);
11859: close($config);
11860: $loaded=1;
11861: }
11862:
11863: sub hostname {
11864: &load_hosts_tab() if (!$loaded);
11865:
11866: my ($lonid) = @_;
11867: return $hostname{$lonid};
11868: }
11869:
11870: sub all_hostnames {
11871: &load_hosts_tab() if (!$loaded);
11872:
11873: return %hostname;
11874: }
11875:
11876: sub all_names {
11877: &load_hosts_tab() if (!$loaded);
11878:
11879: return %name_to_host;
11880: }
11881:
11882: sub all_host_domain {
11883: &load_hosts_tab() if (!$loaded);
11884: return %hostdom;
11885: }
11886:
11887: sub is_library {
11888: &load_hosts_tab() if (!$loaded);
11889:
11890: return exists($libserv{$_[0]});
11891: }
11892:
11893: sub all_library {
11894: &load_hosts_tab() if (!$loaded);
11895:
11896: return %libserv;
11897: }
11898:
11899: sub unique_library {
11900: #2x reverse removes all hostnames that appear more than once
11901: my %unique = reverse &all_library();
11902: return reverse %unique;
11903: }
11904:
11905: sub get_servers {
11906: &load_hosts_tab() if (!$loaded);
11907:
11908: my ($domain,$type) = @_;
11909: my %possible_hosts = ($type eq 'library') ? %libserv
11910: : %hostname;
11911: my %result;
11912: if (ref($domain) eq 'ARRAY') {
11913: while ( my ($host,$hostname) = each(%possible_hosts)) {
11914: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11915: $result{$host} = $hostname;
11916: }
11917: }
11918: } else {
11919: while ( my ($host,$hostname) = each(%possible_hosts)) {
11920: if ($hostdom{$host} eq $domain) {
11921: $result{$host} = $hostname;
11922: }
11923: }
11924: }
11925: return %result;
11926: }
11927:
11928: sub get_unique_servers {
11929: my %unique = reverse &get_servers(@_);
11930: return reverse %unique;
11931: }
11932:
11933: sub host_domain {
11934: &load_hosts_tab() if (!$loaded);
11935:
11936: my ($lonid) = @_;
11937: return $hostdom{$lonid};
11938: }
11939:
11940: sub all_domains {
11941: &load_hosts_tab() if (!$loaded);
11942:
11943: my %seen;
11944: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11945: return @uniq;
11946: }
11947:
11948: sub internet_dom {
11949: &load_hosts_tab() if (!$loaded);
11950:
11951: my ($lonid) = @_;
11952: return $internetdom{$lonid};
11953: }
11954:
11955: sub is_LC_dns {
11956: &load_hosts_tab() if (!$loaded);
11957:
11958: my ($hostname) = @_;
11959: return exists($LC_dns_serv{$hostname});
11960: }
11961:
11962: }
11963:
11964: {
11965: my %iphost;
11966: my %name_to_ip;
11967: my %lonid_to_ip;
11968:
11969: sub get_hosts_from_ip {
11970: my ($ip) = @_;
11971: my %iphosts = &get_iphost();
11972: if (ref($iphosts{$ip})) {
11973: return @{$iphosts{$ip}};
11974: }
11975: return;
11976: }
11977:
11978: sub reset_hosts_ip_info {
11979: undef(%iphost);
11980: undef(%name_to_ip);
11981: undef(%lonid_to_ip);
11982: }
11983:
11984: sub get_host_ip {
11985: my ($lonid) = @_;
11986: if (exists($lonid_to_ip{$lonid})) {
11987: return $lonid_to_ip{$lonid};
11988: }
11989: my $name=&hostname($lonid);
11990: my $ip = gethostbyname($name);
11991: return if (!$ip || length($ip) ne 4);
11992: $ip=inet_ntoa($ip);
11993: $name_to_ip{$name} = $ip;
11994: $lonid_to_ip{$lonid} = $ip;
11995: return $ip;
11996: }
11997:
11998: sub get_iphost {
11999: my ($ignore_cache) = @_;
12000:
12001: if (!$ignore_cache) {
12002: if (%iphost) {
12003: return %iphost;
12004: }
12005: my ($ip_info,$cached)=
12006: &Apache::lonnet::is_cached_new('iphost','iphost');
12007: if ($cached) {
12008: %iphost = %{$ip_info->[0]};
12009: %name_to_ip = %{$ip_info->[1]};
12010: %lonid_to_ip = %{$ip_info->[2]};
12011: return %iphost;
12012: }
12013: }
12014:
12015: # get yesterday's info for fallback
12016: my %old_name_to_ip;
12017: my ($ip_info,$cached)=
12018: &Apache::lonnet::is_cached_new('iphost','iphost');
12019: if ($cached) {
12020: %old_name_to_ip = %{$ip_info->[1]};
12021: }
12022:
12023: my %name_to_host = &all_names();
12024: foreach my $name (keys(%name_to_host)) {
12025: my $ip;
12026: if (!exists($name_to_ip{$name})) {
12027: $ip = gethostbyname($name);
12028: if (!$ip || length($ip) ne 4) {
12029: if (defined($old_name_to_ip{$name})) {
12030: $ip = $old_name_to_ip{$name};
12031: &logthis("Can't find $name defaulting to old $ip");
12032: } else {
12033: &logthis("Name $name no IP found");
12034: next;
12035: }
12036: } else {
12037: $ip=inet_ntoa($ip);
12038: }
12039: $name_to_ip{$name} = $ip;
12040: } else {
12041: $ip = $name_to_ip{$name};
12042: }
12043: foreach my $id (@{ $name_to_host{$name} }) {
12044: $lonid_to_ip{$id} = $ip;
12045: }
12046: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12047: }
12048: &do_cache_new('iphost','iphost',
12049: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12050: 48*60*60);
12051:
12052: return %iphost;
12053: }
12054:
12055: #
12056: # Given a DNS returns the loncapa host name for that DNS
12057: #
12058: sub host_from_dns {
12059: my ($dns) = @_;
12060: my @hosts;
12061: my $ip;
12062:
12063: if (exists($name_to_ip{$dns})) {
12064: $ip = $name_to_ip{$dns};
12065: }
12066: if (!$ip) {
12067: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12068: if (length($ip) == 4) {
12069: $ip = &IO::Socket::inet_ntoa($ip);
12070: }
12071: }
12072: if ($ip) {
12073: @hosts = get_hosts_from_ip($ip);
12074: return $hosts[0];
12075: }
12076: return undef;
12077: }
12078:
12079: sub get_internet_names {
12080: my ($lonid) = @_;
12081: return if ($lonid eq '');
12082: my ($idnref,$cached)=
12083: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12084: if ($cached) {
12085: return $idnref;
12086: }
12087: my $ip = &get_host_ip($lonid);
12088: my @hosts = &get_hosts_from_ip($ip);
12089: my %iphost = &get_iphost();
12090: my (@idns,%seen);
12091: foreach my $id (@hosts) {
12092: my $dom = &host_domain($id);
12093: my $prim_id = &domain($dom,'primary');
12094: my $prim_ip = &get_host_ip($prim_id);
12095: next if ($seen{$prim_ip});
12096: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12097: foreach my $id (@{$iphost{$prim_ip}}) {
12098: my $intdom = &internet_dom($id);
12099: unless (grep(/^\Q$intdom\E$/,@idns)) {
12100: push(@idns,$intdom);
12101: }
12102: }
12103: }
12104: $seen{$prim_ip} = 1;
12105: }
12106: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12107: }
12108:
12109: }
12110:
12111: sub all_loncaparevs {
12112: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
12113: }
12114:
12115: # ---------------------------------------------------------- Read loncaparev table
12116: {
12117: sub load_loncaparevs {
12118: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12119: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12120: while (my $configline=<$config>) {
12121: chomp($configline);
12122: my ($hostid,$loncaparev)=split(/:/,$configline);
12123: $loncaparevs{$hostid}=$loncaparev;
12124: }
12125: close($config);
12126: }
12127: }
12128: }
12129: }
12130:
12131: # ---------------------------------------------------------- Read serverhostID table
12132: {
12133: sub load_serverhomeIDs {
12134: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12135: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12136: while (my $configline=<$config>) {
12137: chomp($configline);
12138: my ($name,$id)=split(/:/,$configline);
12139: $serverhomeIDs{$name}=$id;
12140: }
12141: close($config);
12142: }
12143: }
12144: }
12145: }
12146:
12147:
12148: BEGIN {
12149:
12150: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12151: unless ($readit) {
12152: {
12153: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12154: %perlvar = (%perlvar,%{$configvars});
12155: }
12156:
12157:
12158: # ------------------------------------------------------ Read spare server file
12159: {
12160: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12161:
12162: while (my $configline=<$config>) {
12163: chomp($configline);
12164: if ($configline) {
12165: my ($host,$type) = split(':',$configline,2);
12166: if (!defined($type) || $type eq '') { $type = 'default' };
12167: push(@{ $spareid{$type} }, $host);
12168: }
12169: }
12170: close($config);
12171: }
12172: # ------------------------------------------------------------ Read permissions
12173: {
12174: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12175:
12176: while (my $configline=<$config>) {
12177: chomp($configline);
12178: if ($configline) {
12179: my ($role,$perm)=split(/ /,$configline);
12180: if ($perm ne '') { $pr{$role}=$perm; }
12181: }
12182: }
12183: close($config);
12184: }
12185:
12186: # -------------------------------------------- Read plain texts for permissions
12187: {
12188: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12189:
12190: while (my $configline=<$config>) {
12191: chomp($configline);
12192: if ($configline) {
12193: my ($short,@plain)=split(/:/,$configline);
12194: %{$prp{$short}} = ();
12195: if (@plain > 0) {
12196: $prp{$short}{'std'} = $plain[0];
12197: for (my $i=1; $i<@plain; $i++) {
12198: $prp{$short}{'alt'.$i} = $plain[$i];
12199: }
12200: }
12201: }
12202: }
12203: close($config);
12204: }
12205:
12206: # ---------------------------------------------------------- Read package table
12207: {
12208: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12209:
12210: while (my $configline=<$config>) {
12211: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12212: chomp($configline);
12213: my ($short,$plain)=split(/:/,$configline);
12214: my ($pack,$name)=split(/\&/,$short);
12215: if ($plain ne '') {
12216: $packagetab{$pack.'&'.$name.'&name'}=$name;
12217: $packagetab{$short}=$plain;
12218: }
12219: }
12220: close($config);
12221: }
12222:
12223: # ---------------------------------------------------------- Read loncaparev table
12224:
12225: &load_loncaparevs();
12226:
12227: # ---------------------------------------------------------- Read serverhostID table
12228:
12229: &load_serverhomeIDs();
12230:
12231: # ---------------------------------------------------------- Read releaseslist XML
12232: {
12233: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12234: if (-e $file) {
12235: my $parser = HTML::LCParser->new($file);
12236: while (my $token = $parser->get_token()) {
12237: if ($token->[0] eq 'S') {
12238: my $item = $token->[1];
12239: my $name = $token->[2]{'name'};
12240: my $value = $token->[2]{'value'};
12241: if ($item ne '' && $name ne '' && $value ne '') {
12242: my $release = $parser->get_text();
12243: $release =~ s/(^\s*|\s*$ )//gx;
12244: $needsrelease{$item.':'.$name.':'.$value} = $release;
12245: }
12246: }
12247: }
12248: }
12249: }
12250:
12251: # ---------------------------------------------------------- Read managers table
12252: {
12253: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12254: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12255: while (my $configline=<$config>) {
12256: chomp($configline);
12257: next if ($configline =~ /^\#/);
12258: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12259: $managerstab{$configline} = 1;
12260: }
12261: }
12262: close($config);
12263: }
12264: }
12265: }
12266:
12267: # ------------- set up temporary directory
12268: {
12269: $tmpdir = LONCAPA::tempdir();
12270:
12271: }
12272:
12273: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12274: 'compress_threshold'=> 20_000,
12275: });
12276:
12277: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12278: $dumpcount=0;
12279: $locknum=0;
12280:
12281: &logtouch();
12282: &logthis('<font color="yellow">INFO: Read configuration</font>');
12283: $readit=1;
12284: {
12285: use integer;
12286: my $test=(2**32)+1;
12287: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12288: &logthis(" Detected 64bit platform ($_64bit)");
12289: }
12290:
12291: {
12292: eval {
12293: ($apache) =
12294: (Apache2::ServerUtil::get_server_version() =~ m{Apache/(\d+\.\d+)});
12295: };
12296: if ($@) {
12297: $apache = 1.3;
12298: }
12299: }
12300:
12301: }
12302: }
12303:
12304: 1;
12305: __END__
12306:
12307: =pod
12308:
12309: =head1 NAME
12310:
12311: Apache::lonnet - Subroutines to ask questions about things in the network.
12312:
12313: =head1 SYNOPSIS
12314:
12315: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12316:
12317: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12318:
12319: Common parameters:
12320:
12321: =over 4
12322:
12323: =item *
12324:
12325: $uname : an internal username (if $cname expecting a course Id specifically)
12326:
12327: =item *
12328:
12329: $udom : a domain (if $cdom expecting a course's domain specifically)
12330:
12331: =item *
12332:
12333: $symb : a resource instance identifier
12334:
12335: =item *
12336:
12337: $namespace : the name of a .db file that contains the data needed or
12338: being set.
12339:
12340: =back
12341:
12342: =head1 OVERVIEW
12343:
12344: lonnet provides subroutines which interact with the
12345: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12346: about classes, users, and resources.
12347:
12348: For many of these objects you can also use this to store data about
12349: them or modify them in various ways.
12350:
12351: =head2 Symbs
12352:
12353: To identify a specific instance of a resource, LON-CAPA uses symbols
12354: or "symbs"X<symb>. These identifiers are built from the URL of the
12355: map, the resource number of the resource in the map, and the URL of
12356: the resource itself. The latter is somewhat redundant, but might help
12357: if maps change.
12358:
12359: An example is
12360:
12361: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12362:
12363: The respective map entry is
12364:
12365: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12366: title="Problem 2">
12367: </resource>
12368:
12369: Symbs are used by the random number generator, as well as to store and
12370: restore data specific to a certain instance of for example a problem.
12371:
12372: =head2 Storing And Retrieving Data
12373:
12374: X<store()>X<cstore()>X<restore()>Three of the most important functions
12375: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12376: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12377: is is the non-critical message twin of cstore. These functions are for
12378: handlers to store a perl hash to a user's permanent data space in an
12379: easy manner, and to retrieve it again on another call. It is expected
12380: that a handler would use this once at the beginning to retrieve data,
12381: and then again once at the end to send only the new data back.
12382:
12383: The data is stored in the user's data directory on the user's
12384: homeserver under the ID of the course.
12385:
12386: The hash that is returned by restore will have all of the previous
12387: value for all of the elements of the hash.
12388:
12389: Example:
12390:
12391: #creating a hash
12392: my %hash;
12393: $hash{'foo'}='bar';
12394:
12395: #storing it
12396: &Apache::lonnet::cstore(\%hash);
12397:
12398: #changing a value
12399: $hash{'foo'}='notbar';
12400:
12401: #adding a new value
12402: $hash{'bar'}='foo';
12403: &Apache::lonnet::cstore(\%hash);
12404:
12405: #retrieving the hash
12406: my %history=&Apache::lonnet::restore();
12407:
12408: #print the hash
12409: foreach my $key (sort(keys(%history))) {
12410: print("\%history{$key} = $history{$key}");
12411: }
12412:
12413: Will print out:
12414:
12415: %history{1:foo} = bar
12416: %history{1:keys} = foo:timestamp
12417: %history{1:timestamp} = 990455579
12418: %history{2:bar} = foo
12419: %history{2:foo} = notbar
12420: %history{2:keys} = foo:bar:timestamp
12421: %history{2:timestamp} = 990455580
12422: %history{bar} = foo
12423: %history{foo} = notbar
12424: %history{timestamp} = 990455580
12425: %history{version} = 2
12426:
12427: Note that the special hash entries C<keys>, C<version> and
12428: C<timestamp> were added to the hash. C<version> will be equal to the
12429: total number of versions of the data that have been stored. The
12430: C<timestamp> attribute will be the UNIX time the hash was
12431: stored. C<keys> is available in every historical section to list which
12432: keys were added or changed at a specific historical revision of a
12433: hash.
12434:
12435: B<Warning>: do not store the hash that restore returns directly. This
12436: will cause a mess since it will restore the historical keys as if the
12437: were new keys. I.E. 1:foo will become 1:1:foo etc.
12438:
12439: Calling convention:
12440:
12441: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
12442: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname);
12443:
12444: For more detailed information, see lonnet specific documentation.
12445:
12446: =head1 RETURN MESSAGES
12447:
12448: =over 4
12449:
12450: =item * B<con_lost>: unable to contact remote host
12451:
12452: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12453: when the connection is brought back up
12454:
12455: =item * B<con_failed>: unable to contact remote host and unable to save message
12456: for later delivery
12457:
12458: =item * B<error:>: an error a occurred, a description of the error follows the :
12459:
12460: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12461: that was requested
12462:
12463: =back
12464:
12465: =head1 PUBLIC SUBROUTINES
12466:
12467: =head2 Session Environment Functions
12468:
12469: =over 4
12470:
12471: =item *
12472: X<appenv()>
12473: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12474: the user envirnoment file, and will be restored for each access this
12475: user makes during this session, also modifies the %env for the current
12476: process. Optional rolesarrayref - if defined contains a reference to an array
12477: of roles which are exempt from the restriction on modifying user.role entries
12478: in the user's environment.db and in %env.
12479:
12480: =item *
12481: X<delenv()>
12482: B<delenv($delthis,$regexp)>: removes all items from the session
12483: environment file that begin with $delthis. If the
12484: optional second arg - $regexp - is true, $delthis is treated as a
12485: regular expression, otherwise \Q$delthis\E is used.
12486: The values are also deleted from the current processes %env.
12487:
12488: =item * get_env_multiple($name)
12489:
12490: gets $name from the %env hash, it seemlessly handles the cases where multiple
12491: values may be defined and end up as an array ref.
12492:
12493: returns an array of values
12494:
12495: =back
12496:
12497: =head2 User Information
12498:
12499: =over 4
12500:
12501: =item *
12502: X<queryauthenticate()>
12503: B<queryauthenticate($uname,$udom)>: try to determine user's current
12504: authentication scheme
12505:
12506: =item *
12507: X<authenticate()>
12508: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12509: authenticate user from domain's lib servers (first use the current
12510: one). C<$upass> should be the users password.
12511: $checkdefauth is optional (value is 1 if a check should be made to
12512: authenticate user using default authentication method, and allow
12513: account creation if username does not have account in the domain).
12514: $clientcancheckhost is optional (value is 1 if checking whether the
12515: server can host will occur on the client side in lonauth.pm).
12516:
12517: =item *
12518: X<homeserver()>
12519: B<homeserver($uname,$udom)>: find the server which has
12520: the user's directory and files (there must be only one), this caches
12521: the answer, and also caches if there is a borken connection.
12522:
12523: =item *
12524: X<idget()>
12525: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12526: (IDs are a unique resource in a domain, there must be only 1 ID per
12527: username, and only 1 username per ID in a specific domain) (returns
12528: hash: id=>name,id=>name)
12529:
12530: =item *
12531: X<idrget()>
12532: B<idrget($udom,@unames)>: find the IDs behind a list of
12533: usernames (returns hash: name=>id,name=>id)
12534:
12535: =item *
12536: X<idput()>
12537: B<idput($udom,%ids)>: store away a list of names and associated IDs
12538:
12539: =item *
12540: X<rolesinit()>
12541: B<rolesinit($udom,$username)>: get user privileges.
12542: returns user role, first access and timer interval hashes
12543:
12544: =item *
12545: X<privileged()>
12546: B<privileged($username,$domain)>: returns a true if user has a
12547: privileged and active role (i.e. su or dc), false otherwise.
12548:
12549: =item *
12550: X<getsection()>
12551: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12552: course $cname, return section name/number or '' for "not in course"
12553: and '-1' for "no section"
12554:
12555: =item *
12556: X<userenvironment()>
12557: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12558: passed in @what from the requested user's environment, returns a hash
12559:
12560: =item *
12561: X<userlog_query()>
12562: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12563: activity.log file. %filters defines filters applied when parsing the
12564: log file. These can be start or end timestamps, or the type of action
12565: - log to look for Login or Logout events, check for Checkin or
12566: Checkout, role for role selection. The response is in the form
12567: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12568: escaped strings of the action recorded in the activity.log file.
12569:
12570: =back
12571:
12572: =head2 User Roles
12573:
12574: =over 4
12575:
12576: =item *
12577:
12578: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12579: F: full access
12580: U,I,K: authentication modes (cxx only)
12581: '': forbidden
12582: 1: user needs to choose course
12583: 2: browse allowed
12584: A: passphrase authentication needed
12585:
12586: =item *
12587:
12588: constructaccess($url,$setpriv) : check for access to construction space URL
12589:
12590: See if the owner domain and name in the URL match those in the
12591: expected environment. If so, return three element list
12592: ($ownername,$ownerdomain,$ownerhome).
12593:
12594: Otherwise return the null string.
12595:
12596: If second argument 'setpriv' is true, it assigns the privileges,
12597: and returns the same three element list, unless the owner has
12598: blocked "ad hoc" Domain Coordinator access to the Author Space,
12599: in which case the null string is returned.
12600:
12601: =item *
12602:
12603: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12604: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12605: and course level
12606:
12607: =item *
12608:
12609: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12610: (rolesplain.tab); plain text explanation of a user role term.
12611: $type is Course (default) or Community.
12612: If $forcedefault evaluates to true, text returned will be default
12613: text for $type. Otherwise, if this is a course, the text returned
12614: will be a custom name for the role (if defined in the course's
12615: environment). If no custom name is defined the default is returned.
12616:
12617: =item *
12618:
12619: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
12620: All arguments are optional. Returns a hash of a roles, either for
12621: co-author/assistant author roles for a user's Construction Space
12622: (default), or if $context is 'userroles', roles for the user himself,
12623: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12624: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12625: For each key, value is set to colon-separated start and end times for
12626: the role. If no username and domain are specified, will default to
12627: current user/domain. Types, roles, and roledoms are references to arrays
12628: of role statuses (active, future or previous), roles
12629: (e.g., cc,in, st etc.) and domains of the roles which can be used
12630: to restrict the list of roles reported. If no array ref is
12631: provided for types, will default to return only active roles.
12632:
12633: =item *
12634:
12635: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12636: user: $uname:$udom has a role in the course: $cdom_$cnum.
12637:
12638: Additional optional arguments are: $type (if role checking is to be restricted
12639: to certain user status types -- previous (expired roles), active (currently
12640: available roles) or future (roles available in the future), and
12641: $hideprivileged -- if true will not report course roles for users who
12642: have active Domain Coordinator role in course's domain or in additional
12643: domains (specified in 'Domains to check for privileged users' in course
12644: environment -- set via: Course Settings -> Classlists and staff listing).
12645:
12646: =item *
12647:
12648: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
12649: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
12650: $possdomains and $possroles are optional array refs -- to domains to check and
12651: roles to check. If $possdomains is not specified, a dump will be done of the
12652: users' roles.db to check for a dc or su role in any domain. This can be
12653: time consuming if &privileged is called repeatedly (e.g., when displaying a
12654: classlist), so in such cases, supplying a $possdomains array is preferred, as
12655: this then allows &privileged_by_domain() to be used, which caches the identity
12656: of privileged users, eliminating the need for repeated calls to &dump().
12657:
12658: =item *
12659:
12660: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
12661: where the outer hash keys are domains specified in the $possdomains array ref,
12662: next inner hash keys are privileged roles specified in the $roles array ref,
12663: and the innermost hash contains key = value pairs for username:domain = end:start
12664: for active or future "privileged" users with that role in that domain. To avoid
12665: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
12666: innerhash are cached using priv_$role and $dom as the identifiers.
12667:
12668: =back
12669:
12670: =head2 User Modification
12671:
12672: =over 4
12673:
12674: =item *
12675:
12676: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12677: user for the level given by URL. Optional start and end dates (leave empty
12678: string or zero for "no date")
12679:
12680: =item *
12681:
12682: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12683: change a users, password, possible return values are: ok,
12684: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12685: refused
12686:
12687: =item *
12688:
12689: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12690:
12691: =item *
12692:
12693: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12694: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12695:
12696: will update user information (firstname,middlename,lastname,generation,
12697: permanentemail), and if forceid is true, student/employee ID also.
12698: A user's institutional affiliation(s) can also be updated.
12699: User information fields will not be overwritten with empty entries
12700: unless the field is included in the $candelete array reference.
12701: This array is included when a single user is modified via "Manage Users",
12702: or when Autoupdate.pl is run by cron in a domain.
12703:
12704: =item *
12705:
12706: modifystudent
12707:
12708: modify a student's enrollment and identification information.
12709: The course id is resolved based on the current user's environment.
12710: This means the invoking user must be a course coordinator or otherwise
12711: associated with a course.
12712:
12713: This call is essentially a wrapper for lonnet::modifyuser and
12714: lonnet::modify_student_enrollment
12715:
12716: Inputs:
12717:
12718: =over 4
12719:
12720: =item B<$udom> Student's loncapa domain
12721:
12722: =item B<$uname> Student's loncapa login name
12723:
12724: =item B<$uid> Student/Employee ID
12725:
12726: =item B<$umode> Student's authentication mode
12727:
12728: =item B<$upass> Student's password
12729:
12730: =item B<$first> Student's first name
12731:
12732: =item B<$middle> Student's middle name
12733:
12734: =item B<$last> Student's last name
12735:
12736: =item B<$gene> Student's generation
12737:
12738: =item B<$usec> Student's section in course
12739:
12740: =item B<$end> Unix time of the roles expiration
12741:
12742: =item B<$start> Unix time of the roles start date
12743:
12744: =item B<$forceid> If defined, allow $uid to be changed
12745:
12746: =item B<$desiredhome> server to use as home server for student
12747:
12748: =item B<$email> Student's permanent e-mail address
12749:
12750: =item B<$type> Type of enrollment (auto or manual)
12751:
12752: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12753:
12754: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12755:
12756: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12757:
12758: =item B<$context> role change context (shown in User Management Logs display in a course)
12759:
12760: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12761:
12762: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
12763:
12764: =back
12765:
12766: =item *
12767:
12768: modify_student_enrollment
12769:
12770: Change a student's enrollment status in a class. The environment variable
12771: 'role.request.course' must be defined for this function to proceed.
12772:
12773: Inputs:
12774:
12775: =over 4
12776:
12777: =item $udom, student's domain
12778:
12779: =item $uname, student's name
12780:
12781: =item $uid, student's user id
12782:
12783: =item $first, student's first name
12784:
12785: =item $middle
12786:
12787: =item $last
12788:
12789: =item $gene
12790:
12791: =item $usec
12792:
12793: =item $end
12794:
12795: =item $start
12796:
12797: =item $type
12798:
12799: =item $locktype
12800:
12801: =item $cid
12802:
12803: =item $selfenroll
12804:
12805: =item $context
12806:
12807: =item $credits, number of credits student will earn from this class
12808:
12809: =back
12810:
12811:
12812: =item *
12813:
12814: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12815: custom role; give a custom role to a user for the level given by URL. Specify
12816: name and domain of role author, and role name
12817:
12818: =item *
12819:
12820: revokerole($udom,$uname,$url,$role) : revoke a role for url
12821:
12822: =item *
12823:
12824: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12825:
12826: =back
12827:
12828: =head2 Course Infomation
12829:
12830: =over 4
12831:
12832: =item *
12833:
12834: coursedescription($courseid,$options) : returns a hash of information about the
12835: specified course id, including all environment settings for the
12836: course, the description of the course will be in the hash under the
12837: key 'description'
12838:
12839: $options is an optional parameter that if supplied is a hash reference that controls
12840: what how this function works. It has the following key/values:
12841:
12842: =over 4
12843:
12844: =item freshen_cache
12845:
12846: If defined, and the environment cache for the course is valid, it is
12847: returned in the returned hash.
12848:
12849: =item one_time
12850:
12851: If defined, the last cache time is set to _now_
12852:
12853: =item user
12854:
12855: If defined, the supplied username is used instead of the current user.
12856:
12857:
12858: =back
12859:
12860: =item *
12861:
12862: resdata($name,$domain,$type,@which) : request for current parameter
12863: setting for a specific $type, where $type is either 'course' or 'user',
12864: @what should be a list of parameters to ask about. This routine caches
12865: answers for 10 minutes.
12866:
12867: =item *
12868:
12869: get_courseresdata($courseid, $domain) : dump the entire course resource
12870: data base, returning a hash that is keyed by the resource name and has
12871: values that are the resource value. I believe that the timestamps and
12872: versions are also returned.
12873:
12874: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
12875: supplemental content area. This routine caches the number of files for
12876: 10 minutes.
12877:
12878: =back
12879:
12880: =head2 Course Modification
12881:
12882: =over 4
12883:
12884: =item *
12885:
12886: writecoursepref($courseid,%prefs) : write preferences (environment
12887: database) for a course
12888:
12889: =item *
12890:
12891: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12892:
12893: =item *
12894:
12895: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12896:
12897: =item *
12898:
12899: is_course($courseid), is_course($cdom, $cnum)
12900:
12901: Accepts either a combined $courseid (in the form of domain_courseid) or the
12902: two component version $cdom, $cnum. It checks if the specified course exists.
12903:
12904: Returns:
12905: undef if the course doesn't exist, otherwise
12906: in scalar context the combined courseid.
12907: in list context the two components of the course identifier, domain and
12908: courseid.
12909:
12910: =back
12911:
12912: =head2 Resource Subroutines
12913:
12914: =over 4
12915:
12916: =item *
12917:
12918: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12919:
12920: =item *
12921:
12922: repcopy($filename) : subscribes to the requested file, and attempts to
12923: replicate from the owning library server, Might return
12924: 'unavailable', 'not_found', 'forbidden', 'ok', or
12925: 'bad_request', also attempts to grab the metadata for the
12926: resource. Expects the local filesystem pathname
12927: (/home/httpd/html/res/....)
12928:
12929: =back
12930:
12931: =head2 Resource Information
12932:
12933: =over 4
12934:
12935: =item *
12936:
12937: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
12938: and returns the value of a variety of different possible values,
12939: $varname should be a request string, and the other parameters can be
12940: used to specify who and what one is asking about. Ordinarily, $cid
12941: does not need to be specified, as it is retrived from
12942: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
12943: within lonuserstate::loadmap() when initializing a course, before
12944: $env{'request.course.id'} has been set, so it needs to be provided
12945: in that one case.
12946:
12947: Possible values for $varname are environment.lastname (or other item
12948: from the envirnment hash), user.name (or someother aspect about the
12949: user), resource.0.maxtries (or some other part and parameter of a
12950: resource)
12951:
12952: =item *
12953:
12954: directcondval($number) : get current value of a condition; reads from a state
12955: string
12956:
12957: =item *
12958:
12959: condval($condidx) : value of condition index based on state
12960:
12961: =item *
12962:
12963: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12964: resource's metadata, $what should be either a specific key, or either
12965: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12966: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12967:
12968: this function automatically caches all requests
12969:
12970: =item *
12971:
12972: metadata_query($query,$custom,$customshow) : make a metadata query against the
12973: network of library servers; returns file handle of where SQL and regex results
12974: will be stored for query
12975:
12976: =item *
12977:
12978: symbread($filename) : return symbolic list entry (filename argument optional);
12979: returns the data handle
12980:
12981: =item *
12982:
12983: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12984: and is a possible symb for the URL in $thisfn, and if is an encrypted
12985: resource that the user accessed using /enc/ returns a 1 on success, 0
12986: on failure, user must be in a course, as it assumes the existence of
12987: the course initial hash, and uses $env('request.course.id'}. The third
12988: arg is an optional reference to a scalar. If this arg is passed in the
12989: call to symbverify, it will be set to 1 if the symb has been set to be
12990: encrypted; otherwise it will be null.
12991:
12992: =item *
12993:
12994: symbclean($symb) : removes versions numbers from a symb, returns the
12995: cleaned symb
12996:
12997: =item *
12998:
12999: is_on_map($uri) : checks if the $uri is somewhere on the current
13000: course map, user must be in a course for it to work.
13001:
13002: =item *
13003:
13004: numval($salt) : return random seed value (addend for rndseed)
13005:
13006: =item *
13007:
13008: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13009: a random seed, all arguments are optional, if they aren't sent it uses the
13010: environment to derive them. Note: if symb isn't sent and it can't get one
13011: from &symbread it will use the current time as its return value
13012:
13013: =item *
13014:
13015: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13016: unfakeable, receipt
13017:
13018: =item *
13019:
13020: receipt() : API to ireceipt working off of env values; given out to users
13021:
13022: =item *
13023:
13024: countacc($url) : count the number of accesses to a given URL
13025:
13026: =item *
13027:
13028: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13029:
13030: =item *
13031:
13032: checkin($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 $tcrsid)
13033:
13034: =item *
13035:
13036: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13037:
13038: =item *
13039:
13040: devalidate($symb) : devalidate temporary spreadsheet calculations,
13041: forcing spreadsheet to reevaluate the resource scores next time.
13042:
13043: =item *
13044:
13045: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13046: when viewing in course context.
13047:
13048: input: six args -- filename (decluttered), course number, course domain,
13049: url, symb (if registered) and group (if this is a
13050: group item -- e.g., bulletin board, group page etc.).
13051:
13052: output: array of five scalars --
13053: $cfile -- url for file editing if editable on current server
13054: $home -- homeserver of resource (i.e., for author if published,
13055: or course if uploaded.).
13056: $switchserver -- 1 if server switch will be needed.
13057: $forceedit -- 1 if icon/link should be to go to edit mode
13058: $forceview -- 1 if icon/link should be to go to view mode
13059:
13060: =item *
13061:
13062: is_course_upload($file,$cnum,$cdom)
13063:
13064: Used in course context to determine if current file was uploaded to
13065: the course (i.e., would be found in /userfiles/docs on the course's
13066: homeserver.
13067:
13068: input: 3 args -- filename (decluttered), course number and course domain.
13069: output: boolean -- 1 if file was uploaded.
13070:
13071: =back
13072:
13073: =head2 Storing/Retreiving Data
13074:
13075: =over 4
13076:
13077: =item *
13078:
13079: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
13080: for this url; hashref needs to be given and should be a \%hashname; the
13081: remaining args aren't required and if they aren't passed or are '' they will
13082: be derived from the env
13083:
13084: =item *
13085:
13086: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
13087: uses critical subroutine
13088:
13089: =item *
13090:
13091: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13092: all args are optional
13093:
13094: =item *
13095:
13096: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13097: dumps the complete (or key matching regexp) namespace into a hash
13098: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13099: normally &store()ed into
13100:
13101: $range should be either an integer '100' (give me the first 100
13102: matching records)
13103: or be two integers sperated by a - with no spaces
13104: '30-50' (give me the 30th through the 50th matching
13105: records)
13106:
13107:
13108: =item *
13109:
13110: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
13111: replaces a &store() version of data with a replacement set of data
13112: for a particular resource in a namespace passed in the $storehash hash
13113: reference
13114:
13115: =item *
13116:
13117: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13118: works very similar to store/cstore, but all data is stored in a
13119: temporary location and can be reset using tmpreset, $storehash should
13120: be a hash reference, returns nothing on success
13121:
13122: =item *
13123:
13124: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13125: similar to restore, but all data is stored in a temporary location and
13126: can be reset using tmpreset. Returns a hash of values on success,
13127: error string otherwise.
13128:
13129: =item *
13130:
13131: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13132: deltes all keys for $symb form the temporary storage hash.
13133:
13134: =item *
13135:
13136: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13137: reference filled in from namesp ($udom and $uname are optional)
13138:
13139: =item *
13140:
13141: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13142: namesp ($udom and $uname are optional)
13143:
13144: =item *
13145:
13146: dump($namespace,$udom,$uname,$regexp,$range) :
13147: dumps the complete (or key matching regexp) namespace into a hash
13148: ($udom, $uname, $regexp, $range are optional)
13149:
13150: $range should be either an integer '100' (give me the first 100
13151: matching records)
13152: or be two integers sperated by a - with no spaces
13153: '30-50' (give me the 30th through the 50th matching
13154: records)
13155: =item *
13156:
13157: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13158: $store can be a scalar, an array reference, or if the amount to be
13159: incremented is > 1, a hash reference.
13160:
13161: ($udom and $uname are optional)
13162:
13163: =item *
13164:
13165: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13166: ($udom and $uname are optional)
13167:
13168: =item *
13169:
13170: cput($namespace,$storehash,$udom,$uname) : critical put
13171: ($udom and $uname are optional)
13172:
13173: =item *
13174:
13175: newput($namespace,$storehash,$udom,$uname) :
13176:
13177: Attempts to store the items in the $storehash, but only if they don't
13178: currently exist, if this succeeds you can be certain that you have
13179: successfully created a new key value pair in the $namespace db.
13180:
13181:
13182: Args:
13183: $namespace: name of database to store values to
13184: $storehash: hashref to store to the db
13185: $udom: (optional) domain of user containing the db
13186: $uname: (optional) name of user caontaining the db
13187:
13188: Returns:
13189: 'ok' -> succeeded in storing all keys of $storehash
13190: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13191: least <key> already existed in the db (other
13192: requested keys may also already exist)
13193: 'error: <msg>' -> unable to tie the DB or other error occurred
13194: 'con_lost' -> unable to contact request server
13195: 'refused' -> action was not allowed by remote machine
13196:
13197:
13198: =item *
13199:
13200: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13201: reference filled in from namesp (encrypts the return communication)
13202: ($udom and $uname are optional)
13203:
13204: =item *
13205:
13206: log($udom,$name,$home,$message) : write to permanent log for user; use
13207: critical subroutine
13208:
13209: =item *
13210:
13211: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13212: array reference filled in from namespace found in domain level on either
13213: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13214:
13215: =item *
13216:
13217: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13218: domain level either on specified domain server ($uhome) or primary domain
13219: server ($udom and $uhome are optional)
13220:
13221: =item *
13222:
13223: get_domain_defaults($target_domain) : returns hash with defaults for
13224: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
13225: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
13226: or localauth), initial password or a kerberos realm, language (e.g., en-us).
13227: Values are retrieved from cache (if current), or from domain's configuration.db
13228: (if available), or lastly from values in lonTabs/dns_domain,tab,
13229: or lonTabs/domain.tab.
13230:
13231: %domdefaults = &get_auth_defaults($target_domain);
13232:
13233: =back
13234:
13235: =head2 Network Status Functions
13236:
13237: =over 4
13238:
13239: =item *
13240:
13241: dirlist() : return directory list based on URI (first arg).
13242:
13243: Inputs: 1 required, 5 optional.
13244:
13245: =over
13246:
13247: =item
13248: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13249:
13250: =item
13251: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13252:
13253: =item
13254: $username - username of user/course to be listed. Extracted from $uri if absent.
13255:
13256: =item
13257: $getpropath - boolean: 1 if prepend path using &propath().
13258:
13259: =item
13260: $getuserdir - boolean: 1 if prepend path for "userfiles".
13261:
13262: =item
13263: $alternateRoot - path to prepend in place of path from $uri.
13264:
13265: =back
13266:
13267: Returns: Array of up to two items.
13268:
13269: =over
13270:
13271: a reference to an array of files/subdirectories
13272:
13273: =over
13274:
13275: Each element in the array of files/subdirectories is a & separated list of
13276: item name and the result of running stat on the item. If dirlist was requested
13277: for a file instead of a directory, the item name will be ''. For a directory
13278: listing, if the item is a metadata file, the element will end &N&M
13279: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13280: default copyright set (1).
13281:
13282: =back
13283:
13284: a scalar containing error condition (if encountered).
13285:
13286: =over
13287:
13288: =item
13289: no_host (no homeserver identified for $username:$domain).
13290:
13291: =item
13292: no_such_host (server contacted for listing not identified as valid host).
13293:
13294: =item
13295: con_lost (connection to remote server failed).
13296:
13297: =item
13298: refused (invalid $username:$domain received on lond side).
13299:
13300: =item
13301: no_such_dir (directory at specified path on lond side does not exist).
13302:
13303: =item
13304: empty (directory at specified path on lond side is empty).
13305:
13306: =over
13307:
13308: This is currently not encountered because the &ls3, &ls2,
13309: &ls (_handler) routines on the lond side do not filter out
13310: . and .. from a directory listing.
13311:
13312: =back
13313:
13314: =back
13315:
13316: =back
13317:
13318: =item *
13319:
13320: spareserver() : find server with least workload from spare.tab
13321:
13322:
13323: =item *
13324:
13325: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13326: if there is no corresponding loncapa host.
13327:
13328: =back
13329:
13330:
13331: =head2 Apache Request
13332:
13333: =over 4
13334:
13335: =item *
13336:
13337: ssi($url,%hash) : server side include, does a complete request cycle on url to
13338: localhost, posts hash
13339:
13340: =back
13341:
13342: =head2 Data to String to Data
13343:
13344: =over 4
13345:
13346: =item *
13347:
13348: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13349: and '&' separators, supports elements that are arrayrefs and hashrefs
13350:
13351: =item *
13352:
13353: hashref2str($hashref) : convert a hashref into a string complete with
13354: escaping and '=' and '&' separators, supports elements that are
13355: arrayrefs and hashrefs
13356:
13357: =item *
13358:
13359: arrayref2str($arrayref) : convert an arrayref into a string complete
13360: with escaping and '&' separators, supports elements that are arrayrefs
13361: and hashrefs
13362:
13363: =item *
13364:
13365: str2hash($string) : convert string to hash using unescaping and
13366: splitting on '=' and '&', supports elements that are arrayrefs and
13367: hashrefs
13368:
13369: =item *
13370:
13371: str2array($string) : convert string to hash using unescaping and
13372: splitting on '&', supports elements that are arrayrefs and hashrefs
13373:
13374: =back
13375:
13376: =head2 Logging Routines
13377:
13378:
13379: These routines allow one to make log messages in the lonnet.log and
13380: lonnet.perm logfiles.
13381:
13382: =over 4
13383:
13384: =item *
13385:
13386: logtouch() : make sure the logfile, lonnet.log, exists
13387:
13388: =item *
13389:
13390: logthis() : append message to the normal lonnet.log file, it gets
13391: preiodically rolled over and deleted.
13392:
13393: =item *
13394:
13395: logperm() : append a permanent message to lonnet.perm.log, this log
13396: file never gets deleted by any automated portion of the system, only
13397: messages of critical importance should go in here.
13398:
13399:
13400: =back
13401:
13402: =head2 General File Helper Routines
13403:
13404: =over 4
13405:
13406: =item *
13407:
13408: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13409: (a) files in /uploaded
13410: (i) If a local copy of the file exists -
13411: compares modification date of local copy with last-modified date for
13412: definitive version stored on home server for course. If local copy is
13413: stale, requests a new version from the home server and stores it.
13414: If the original has been removed from the home server, then local copy
13415: is unlinked.
13416: (ii) If local copy does not exist -
13417: requests the file from the home server and stores it.
13418:
13419: If $caller is 'uploadrep':
13420: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13421: for request for files originally uploaded via DOCS.
13422: - returns 'ok' if fresh local copy now available, -1 otherwise.
13423:
13424: Otherwise:
13425: This indicates a call from the content generation phase of the request.
13426: - returns the entire contents of the file or -1.
13427:
13428: (b) files in /res
13429: - returns the entire contents of a file or -1;
13430: it properly subscribes to and replicates the file if neccessary.
13431:
13432:
13433: =item *
13434:
13435: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13436: reference
13437:
13438: returns either a stat() list of data about the file or an empty list
13439: if the file doesn't exist or couldn't find out about it (connection
13440: problems or user unknown)
13441:
13442: =item *
13443:
13444: filelocation($dir,$file) : returns file system location of a file
13445: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13446: directory that relative $file lookups are to looked in ($dir of /a/dir
13447: and a file of ../bob will become /a/bob)
13448:
13449: =item *
13450:
13451: hreflocation($dir,$file) : returns file system location or a URL; same as
13452: filelocation except for hrefs
13453:
13454: =item *
13455:
13456: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13457:
13458: =back
13459:
13460: =head2 Usererfile file routines (/uploaded*)
13461:
13462: =over 4
13463:
13464: =item *
13465:
13466: userfileupload(): main rotine for putting a file in a user or course's
13467: filespace, arguments are,
13468:
13469: formname - required - this is the name of the element in $env where the
13470: filename, and the contents of the file to create/modifed exist
13471: the filename is in $env{'form.'.$formname.'.filename'} and the
13472: contents of the file is located in $env{'form.'.$formname}
13473: context - if coursedoc, store the file in the course of the active role
13474: of the current user;
13475: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13476: if 'canceloverwrite': delete file in tmp/overwrites directory
13477: subdir - required - subdirectory to put the file in under ../userfiles/
13478: if undefined, it will be placed in "unknown"
13479:
13480: (This routine calls clean_filename() to remove any dangerous
13481: characters from the filename, and then calls finuserfileupload() to
13482: complete the transaction)
13483:
13484: returns either the url of the uploaded file (/uploaded/....) if successful
13485: and /adm/notfound.html if unsuccessful
13486:
13487: =item *
13488:
13489: clean_filename(): routine for cleaing a filename up for storage in
13490: userfile space, argument is:
13491:
13492: filename - proposed filename
13493:
13494: returns: the new clean filename
13495:
13496: =item *
13497:
13498: finishuserfileupload(): routine that creates and sends the file to
13499: userspace, probably shouldn't be called directly
13500:
13501: docuname: username or courseid of destination for the file
13502: docudom: domain of user/course of destination for the file
13503: formname: same as for userfileupload()
13504: fname: filename (including subdirectories) for the file
13505: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13506: allfiles: reference to hash used to store objects found by parser
13507: codebase: reference to hash used for codebases of java objects found by parser
13508: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13509: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13510: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13511: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13512: context: if 'overwrite', will move the uploaded file from its temporary location to
13513: userfiles to facilitate overwriting a previously uploaded file with same name.
13514: mimetype: reference to scalar to accommodate mime type determined
13515: from File::MMagic if $parser = parse.
13516:
13517: returns either the url of the uploaded file (/uploaded/....) if successful
13518: and /adm/notfound.html if unsuccessful (or an error message if context
13519: was 'overwrite').
13520:
13521:
13522: =item *
13523:
13524: renameuserfile(): renames an existing userfile to a new name
13525:
13526: Args:
13527: docuname: username or courseid of destination for the file
13528: docudom: domain of user/course of destination for the file
13529: old: current file name (including any subdirs under userfiles)
13530: new: desired file name (including any subdirs under userfiles)
13531:
13532: =item *
13533:
13534: mkdiruserfile(): creates a directory is a userfiles dir
13535:
13536: Args:
13537: docuname: username or courseid of destination for the file
13538: docudom: domain of user/course of destination for the file
13539: dir: dir to create (including any subdirs under userfiles)
13540:
13541: =item *
13542:
13543: removeuserfile(): removes a file that exists in userfiles
13544:
13545: Args:
13546: docuname: username or courseid of destination for the file
13547: docudom: domain of user/course of destination for the file
13548: fname: filname to delete (including any subdirs under userfiles)
13549:
13550: =item *
13551:
13552: removeuploadedurl(): convience function for removeuserfile()
13553:
13554: Args:
13555: url: a full /uploaded/... url to delete
13556:
13557: =item *
13558:
13559: get_portfile_permissions():
13560: Args:
13561: domain: domain of user or course contain the portfolio files
13562: user: name of user or num of course contain the portfolio files
13563: Returns:
13564: hashref of a dump of the proper file_permissions.db
13565:
13566:
13567: =item *
13568:
13569: get_access_controls():
13570:
13571: Args:
13572: current_permissions: the hash ref returned from get_portfile_permissions()
13573: group: (optional) the group you want the files associated with
13574: file: (optional) the file you want access info on
13575:
13576: Returns:
13577: a hash (keys are file names) of hashes containing
13578: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13579: values are XML containing access control settings (see below)
13580:
13581: Internal notes:
13582:
13583: access controls are stored in file_permissions.db as key=value pairs.
13584: key -> path to file/file_name\0uniqueID:scope_end_start
13585: where scope -> public,guest,course,group,domains or users.
13586: end -> UNIX time for end of access (0 -> no end date)
13587: start -> UNIX time for start of access
13588:
13589: value -> XML description of access control
13590: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13591: <start></start>
13592: <end></end>
13593:
13594: <password></password> for scope type = guest
13595:
13596: <domain></domain> for scope type = course or group
13597: <number></number>
13598: <roles id="">
13599: <role></role>
13600: <access></access>
13601: <section></section>
13602: <group></group>
13603: </roles>
13604:
13605: <dom></dom> for scope type = domains
13606:
13607: <users> for scope type = users
13608: <user>
13609: <uname></uname>
13610: <udom></udom>
13611: </user>
13612: </users>
13613: </scope>
13614:
13615: Access data is also aggregated for each file in an additional key=value pair:
13616: key -> path to file/file_name\0accesscontrol
13617: value -> reference to hash
13618: hash contains key = value pairs
13619: where key = uniqueID:scope_end_start
13620: value = UNIX time record was last updated
13621:
13622: Used to improve speed of look-ups of access controls for each file.
13623:
13624: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13625:
13626: =item *
13627:
13628: modify_access_controls():
13629:
13630: Modifies access controls for a portfolio file
13631: Args
13632: 1. file name
13633: 2. reference to hash of required changes,
13634: 3. domain
13635: 4. username
13636: where domain,username are the domain of the portfolio owner
13637: (either a user or a course)
13638:
13639: Returns:
13640: 1. result of additions or updates ('ok' or 'error', with error message).
13641: 2. result of deletions ('ok' or 'error', with error message).
13642: 3. reference to hash of any new or updated access controls.
13643: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13644: key = integer (inbound ID)
13645: value = uniqueID
13646:
13647: =item *
13648:
13649: get_timebased_id():
13650:
13651: Attempts to get a unique timestamp-based suffix for use with items added to a
13652: course via the Course Editor (e.g., folders, composite pages,
13653: group bulletin boards).
13654:
13655: Args: (first three required; six others optional)
13656:
13657: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13658: docssequence, or name of group
13659:
13660: 2. keyid (alphanumeric): name of temporary locking key in hash,
13661: e.g., num, boardids
13662:
13663: 3. namespace: name of gdbm file used to store suffixes already assigned;
13664: file will be named nohist_namespace.db
13665:
13666: 4. cdom: domain of course; default is current course domain from %env
13667:
13668: 5. cnum: course number; default is current course number from %env
13669:
13670: 6. idtype: set to concat if an additional digit is to be appended to the
13671: unix timestamp to form the suffix, if the plain timestamp is already
13672: in use. Default is to not do this, but simply increment the unix
13673: timestamp by 1 until a unique key is obtained.
13674:
13675: 7. who: holder of locking key; defaults to user:domain for user.
13676:
13677: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
13678: retrying); default is 3.
13679:
13680: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
13681:
13682: Returns:
13683:
13684: 1. suffix obtained (numeric)
13685:
13686: 2. result of deleting locking key (ok if deleted, or lock never obtained)
13687:
13688: 3. error: contains (localized) error message if an error occurred.
13689:
13690:
13691: =back
13692:
13693: =head2 HTTP Helper Routines
13694:
13695: =over 4
13696:
13697: =item *
13698:
13699: escape() : unpack non-word characters into CGI-compatible hex codes
13700:
13701: =item *
13702:
13703: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13704:
13705: =back
13706:
13707: =head1 PRIVATE SUBROUTINES
13708:
13709: =head2 Underlying communication routines (Shouldn't call)
13710:
13711: =over 4
13712:
13713: =item *
13714:
13715: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13716:
13717: =item *
13718:
13719: reply() : uses subreply to send a message to remote machine, logs all failures
13720:
13721: =item *
13722:
13723: critical() : passes a critical message to another server; if cannot
13724: get through then place message in connection buffer directory and
13725: returns con_delayed, if incapable of saving message, returns
13726: con_failed
13727:
13728: =item *
13729:
13730: reconlonc() : tries to reconnect lonc client processes.
13731:
13732: =back
13733:
13734: =head2 Resource Access Logging
13735:
13736: =over 4
13737:
13738: =item *
13739:
13740: flushcourselogs() : flush (save) buffer logs and access logs
13741:
13742: =item *
13743:
13744: courselog($what) : save message for course in hash
13745:
13746: =item *
13747:
13748: courseacclog($what) : save message for course using &courselog(). Perform
13749: special processing for specific resource types (problems, exams, quizzes, etc).
13750:
13751: =item *
13752:
13753: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13754: as a PerlChildExitHandler
13755:
13756: =back
13757:
13758: =head2 Other
13759:
13760: =over 4
13761:
13762: =item *
13763:
13764: symblist($mapname,%newhash) : update symbolic storage links
13765:
13766: =back
13767:
13768: =cut
13769:
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