1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1197 2012/11/11 01:48:33 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( 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: return $handle;
638: }
639:
640: sub timed_flock {
641: my ($file,$lock_type) = @_;
642: my $failed=0;
643: eval {
644: local $SIG{__DIE__}='DEFAULT';
645: local $SIG{ALRM}=sub {
646: $failed=1;
647: die("failed lock");
648: };
649: alarm(13);
650: flock($file,$lock_type);
651: alarm(0);
652: };
653: if ($failed) {
654: return undef;
655: } else {
656: return 1;
657: }
658: }
659:
660: # ---------------------------------------------------------- Append Environment
661:
662: sub appenv {
663: my ($newenv,$roles) = @_;
664: if (ref($newenv) eq 'HASH') {
665: foreach my $key (keys(%{$newenv})) {
666: my $refused = 0;
667: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
668: $refused = 1;
669: if (ref($roles) eq 'ARRAY') {
670: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
671: if (grep(/^\Q$role\E$/,@{$roles})) {
672: $refused = 0;
673: }
674: }
675: }
676: if ($refused) {
677: &logthis("<font color=\"blue\">WARNING: ".
678: "Attempt to modify environment ".$key." to ".$newenv->{$key}
679: .'</font>');
680: delete($newenv->{$key});
681: } else {
682: $env{$key}=$newenv->{$key};
683: }
684: }
685: my $opened = open(my $env_file,'+<',$env{'user.environment'});
686: if ($opened
687: && &timed_flock($env_file,LOCK_EX)
688: &&
689: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
690: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
691: while (my ($key,$value) = each(%{$newenv})) {
692: $disk_env{$key} = $value;
693: }
694: untie(%disk_env);
695: }
696: }
697: return 'ok';
698: }
699: # ----------------------------------------------------- Delete from Environment
700:
701: sub delenv {
702: my ($delthis,$regexp,$roles) = @_;
703: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
704: my $refused = 1;
705: if (ref($roles) eq 'ARRAY') {
706: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
707: if (grep(/^\Q$role\E$/,@{$roles})) {
708: $refused = 0;
709: }
710: }
711: if ($refused) {
712: &logthis("<font color=\"blue\">WARNING: ".
713: "Attempt to delete from environment ".$delthis);
714: return 'error';
715: }
716: }
717: my $opened = open(my $env_file,'+<',$env{'user.environment'});
718: if ($opened
719: && &timed_flock($env_file,LOCK_EX)
720: &&
721: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
722: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
723: foreach my $key (keys(%disk_env)) {
724: if ($regexp) {
725: if ($key=~/^$delthis/) {
726: delete($env{$key});
727: delete($disk_env{$key});
728: }
729: } else {
730: if ($key=~/^\Q$delthis\E/) {
731: delete($env{$key});
732: delete($disk_env{$key});
733: }
734: }
735: }
736: untie(%disk_env);
737: }
738: return 'ok';
739: }
740:
741: sub get_env_multiple {
742: my ($name) = @_;
743: my @values;
744: if (defined($env{$name})) {
745: # exists is it an array
746: if (ref($env{$name})) {
747: @values=@{ $env{$name} };
748: } else {
749: $values[0]=$env{$name};
750: }
751: }
752: return(@values);
753: }
754:
755: # ------------------------------------------------------------------- Locking
756:
757: sub set_lock {
758: my ($text)=@_;
759: $locknum++;
760: my $id=$$.'-'.$locknum;
761: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
762: 'session.lock.'.$id => $text});
763: return $id;
764: }
765:
766: sub get_locks {
767: my $num=0;
768: my %texts=();
769: foreach my $lock (split(/\,/,$env{'session.locks'})) {
770: if ($lock=~/\w/) {
771: $num++;
772: $texts{$lock}=$env{'session.lock.'.$lock};
773: }
774: }
775: return ($num,%texts);
776: }
777:
778: sub remove_lock {
779: my ($id)=@_;
780: my $newlocks='';
781: foreach my $lock (split(/\,/,$env{'session.locks'})) {
782: if (($lock=~/\w/) && ($lock ne $id)) {
783: $newlocks.=','.$lock;
784: }
785: }
786: &appenv({'session.locks' => $newlocks});
787: &delenv('session.lock.'.$id);
788: }
789:
790: sub remove_all_locks {
791: my $activelocks=$env{'session.locks'};
792: foreach my $lock (split(/\,/,$env{'session.locks'})) {
793: if ($lock=~/\w/) {
794: &remove_lock($lock);
795: }
796: }
797: }
798:
799:
800: # ------------------------------------------ Find out current server userload
801: sub userload {
802: my $numusers=0;
803: {
804: opendir(LONIDS,$perlvar{'lonIDsDir'});
805: my $filename;
806: my $curtime=time;
807: while ($filename=readdir(LONIDS)) {
808: next if ($filename eq '.' || $filename eq '..');
809: next if ($filename =~ /publicuser_\d+\.id/);
810: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
811: if ($curtime-$mtime < 1800) { $numusers++; }
812: }
813: closedir(LONIDS);
814: }
815: my $userloadpercent=0;
816: my $maxuserload=$perlvar{'lonUserLoadLim'};
817: if ($maxuserload) {
818: $userloadpercent=100*$numusers/$maxuserload;
819: }
820: $userloadpercent=sprintf("%.2f",$userloadpercent);
821: return $userloadpercent;
822: }
823:
824: # ------------------------------ Find server with least workload from spare.tab
825:
826: sub spareserver {
827: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
828: my $spare_server;
829: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
830: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
831: : $userloadpercent;
832: my ($uint_dom,$remotesessions);
833: if (($udom ne '') && (&domain($udom) ne '')) {
834: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
835: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
836: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
837: $remotesessions = $udomdefaults{'remotesessions'};
838: }
839: my $spareshash = &this_host_spares($udom);
840: if (ref($spareshash) eq 'HASH') {
841: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
842: foreach my $try_server (@{ $spareshash->{'primary'} }) {
843: if ($uint_dom) {
844: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
845: $try_server));
846: }
847: ($spare_server, $lowest_load) =
848: &compare_server_load($try_server, $spare_server, $lowest_load);
849: }
850: }
851:
852: my $found_server = ($spare_server ne '' && $lowest_load < 100);
853:
854: if (!$found_server) {
855: if (ref($spareshash->{'default'}) eq 'ARRAY') {
856: foreach my $try_server (@{ $spareshash->{'default'} }) {
857: if ($uint_dom) {
858: next unless (&spare_can_host($udom,$uint_dom,
859: $remotesessions,$try_server));
860: }
861: ($spare_server, $lowest_load) =
862: &compare_server_load($try_server, $spare_server, $lowest_load);
863: }
864: }
865: }
866: }
867:
868: if (!$want_server_name) {
869: my $protocol = 'http';
870: if ($protocol{$spare_server} eq 'https') {
871: $protocol = $protocol{$spare_server};
872: }
873: if (defined($spare_server)) {
874: my $hostname = &hostname($spare_server);
875: if (defined($hostname)) {
876: $spare_server = $protocol.'://'.$hostname;
877: }
878: }
879: }
880: return $spare_server;
881: }
882:
883: sub compare_server_load {
884: my ($try_server, $spare_server, $lowest_load) = @_;
885:
886: my $loadans = &reply('load', $try_server);
887: my $userloadans = &reply('userload',$try_server);
888:
889: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
890: return ($spare_server, $lowest_load); #didn't get a number from the server
891: }
892:
893: my $load;
894: if ($loadans =~ /\d/) {
895: if ($userloadans =~ /\d/) {
896: #both are numbers, pick the bigger one
897: $load = ($loadans > $userloadans) ? $loadans
898: : $userloadans;
899: } else {
900: $load = $loadans;
901: }
902: } else {
903: $load = $userloadans;
904: }
905:
906: if (($load =~ /\d/) && ($load < $lowest_load)) {
907: $spare_server = $try_server;
908: $lowest_load = $load;
909: }
910: return ($spare_server,$lowest_load);
911: }
912:
913: # --------------------------- ask offload servers if user already has a session
914: sub find_existing_session {
915: my ($udom,$uname) = @_;
916: my $spareshash = &this_host_spares($udom);
917: if (ref($spareshash) eq 'HASH') {
918: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
919: foreach my $try_server (@{ $spareshash->{'primary'} }) {
920: return $try_server if (&has_user_session($try_server, $udom, $uname));
921: }
922: }
923: if (ref($spareshash->{'default'}) eq 'ARRAY') {
924: foreach my $try_server (@{ $spareshash->{'default'} }) {
925: return $try_server if (&has_user_session($try_server, $udom, $uname));
926: }
927: }
928: }
929: return;
930: }
931:
932: # -------------------------------- ask if server already has a session for user
933: sub has_user_session {
934: my ($lonid,$udom,$uname) = @_;
935: my $result = &reply(join(':','userhassession',
936: map {&escape($_)} ($udom,$uname)),$lonid);
937: return 1 if ($result eq 'ok');
938:
939: return 0;
940: }
941:
942: # --------- determine least loaded server in a user's domain which allows login
943:
944: sub choose_server {
945: my ($udom,$checkloginvia) = @_;
946: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
947: my %servers = &get_servers($udom);
948: my $lowest_load = 30000;
949: my ($login_host,$hostname,$portal_path,$isredirect);
950: foreach my $lonhost (keys(%servers)) {
951: my $loginvia;
952: if ($checkloginvia) {
953: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
954: if ($loginvia) {
955: my ($server,$path) = split(/:/,$loginvia);
956: ($login_host, $lowest_load) =
957: &compare_server_load($server, $login_host, $lowest_load);
958: if ($login_host eq $server) {
959: $portal_path = $path;
960: $isredirect = 1;
961: }
962: } else {
963: ($login_host, $lowest_load) =
964: &compare_server_load($lonhost, $login_host, $lowest_load);
965: if ($login_host eq $lonhost) {
966: $portal_path = '';
967: $isredirect = '';
968: }
969: }
970: } else {
971: ($login_host, $lowest_load) =
972: &compare_server_load($lonhost, $login_host, $lowest_load);
973: }
974: }
975: if ($login_host ne '') {
976: $hostname = &hostname($login_host);
977: }
978: return ($login_host,$hostname,$portal_path,$isredirect);
979: }
980:
981: # --------------------------------------------- Try to change a user's password
982:
983: sub changepass {
984: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
985: $currentpass = &escape($currentpass);
986: $newpass = &escape($newpass);
987: my $lonhost = $perlvar{'lonHostID'};
988: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
989: $server);
990: if (! $answer) {
991: &logthis("No reply on password change request to $server ".
992: "by $uname in domain $udom.");
993: } elsif ($answer =~ "^ok") {
994: &logthis("$uname in $udom successfully changed their password ".
995: "on $server.");
996: } elsif ($answer =~ "^pwchange_failure") {
997: &logthis("$uname in $udom was unable to change their password ".
998: "on $server. The action was blocked by either lcpasswd ".
999: "or pwchange");
1000: } elsif ($answer =~ "^non_authorized") {
1001: &logthis("$uname in $udom did not get their password correct when ".
1002: "attempting to change it on $server.");
1003: } elsif ($answer =~ "^auth_mode_error") {
1004: &logthis("$uname in $udom attempted to change their password despite ".
1005: "not being locally or internally authenticated on $server.");
1006: } elsif ($answer =~ "^unknown_user") {
1007: &logthis("$uname in $udom attempted to change their password ".
1008: "on $server but were unable to because $server is not ".
1009: "their home server.");
1010: } elsif ($answer =~ "^refused") {
1011: &logthis("$server refused to change $uname in $udom password because ".
1012: "it was sent an unencrypted request to change the password.");
1013: } elsif ($answer =~ "invalid_client") {
1014: &logthis("$server refused to change $uname in $udom password because ".
1015: "it was a reset by e-mail originating from an invalid server.");
1016: }
1017: return $answer;
1018: }
1019:
1020: # ----------------------- Try to determine user's current authentication scheme
1021:
1022: sub queryauthenticate {
1023: my ($uname,$udom)=@_;
1024: my $uhome=&homeserver($uname,$udom);
1025: if (!$uhome) {
1026: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1027: return 'no_host';
1028: }
1029: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1030: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1031: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1032: }
1033: return $answer;
1034: }
1035:
1036: # --------- Try to authenticate user from domain's lib servers (first this one)
1037:
1038: sub authenticate {
1039: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1040: $upass=&escape($upass);
1041: $uname= &LONCAPA::clean_username($uname);
1042: my $uhome=&homeserver($uname,$udom,1);
1043: my $newhome;
1044: if ((!$uhome) || ($uhome eq 'no_host')) {
1045: # Maybe the machine was offline and only re-appeared again recently?
1046: &reconlonc();
1047: # One more
1048: $uhome=&homeserver($uname,$udom,1);
1049: if (($uhome eq 'no_host') && $checkdefauth) {
1050: if (defined(&domain($udom,'primary'))) {
1051: $newhome=&domain($udom,'primary');
1052: }
1053: if ($newhome ne '') {
1054: $uhome = $newhome;
1055: }
1056: }
1057: if ((!$uhome) || ($uhome eq 'no_host')) {
1058: &logthis("User $uname at $udom is unknown in authenticate");
1059: return 'no_host';
1060: }
1061: }
1062: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1063: if ($answer eq 'authorized') {
1064: if ($newhome) {
1065: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1066: return 'no_account_on_host';
1067: } else {
1068: &logthis("User $uname at $udom authorized by $uhome");
1069: return $uhome;
1070: }
1071: }
1072: if ($answer eq 'non_authorized') {
1073: &logthis("User $uname at $udom rejected by $uhome");
1074: return 'no_host';
1075: }
1076: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1077: return 'no_host';
1078: }
1079:
1080: sub can_host_session {
1081: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1082: my $canhost = 1;
1083: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1084: if (ref($remotesessions) eq 'HASH') {
1085: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1086: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1087: $canhost = 0;
1088: } else {
1089: $canhost = 1;
1090: }
1091: }
1092: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1094: $canhost = 1;
1095: } else {
1096: $canhost = 0;
1097: }
1098: }
1099: if ($canhost) {
1100: if ($remotesessions->{'version'} ne '') {
1101: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1102: if ($reqmajor ne '' && $reqminor ne '') {
1103: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1104: my $major = $1;
1105: my $minor = $2;
1106: if (($major < $reqmajor ) ||
1107: (($major == $reqmajor) && ($minor < $reqminor))) {
1108: $canhost = 0;
1109: }
1110: } else {
1111: $canhost = 0;
1112: }
1113: }
1114: }
1115: }
1116: }
1117: if ($canhost) {
1118: if (ref($hostedsessions) eq 'HASH') {
1119: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1120: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1121: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1122: if (($uint_dom ne '') &&
1123: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1124: $canhost = 0;
1125: } else {
1126: $canhost = 1;
1127: }
1128: }
1129: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1130: if (($uint_dom ne '') &&
1131: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1132: $canhost = 1;
1133: } else {
1134: $canhost = 0;
1135: }
1136: }
1137: }
1138: }
1139: return $canhost;
1140: }
1141:
1142: sub spare_can_host {
1143: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1144: my $canhost=1;
1145: my @intdoms;
1146: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1147: if (ref($internet_names) eq 'ARRAY') {
1148: @intdoms = @{$internet_names};
1149: }
1150: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1151: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1152: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1153: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1154: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1155: $canhost = &can_host_session($udom,$try_server,$remoterev,
1156: $remotesessions,
1157: $defdomdefaults{'hostedsessions'});
1158: }
1159: return $canhost;
1160: }
1161:
1162: sub this_host_spares {
1163: my ($dom) = @_;
1164: my ($dom_in_use,$lonhost_in_use,$result);
1165: my @hosts = ¤t_machine_ids();
1166: foreach my $lonhost (@hosts) {
1167: if (&host_domain($lonhost) eq $dom) {
1168: $dom_in_use = $dom;
1169: $lonhost_in_use = $lonhost;
1170: last;
1171: }
1172: }
1173: if ($dom_in_use ne '') {
1174: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1175: }
1176: if (ref($result) ne 'HASH') {
1177: $lonhost_in_use = $perlvar{'lonHostID'};
1178: $dom_in_use = &host_domain($lonhost_in_use);
1179: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1180: if (ref($result) ne 'HASH') {
1181: $result = \%spareid;
1182: }
1183: }
1184: return $result;
1185: }
1186:
1187: sub spares_for_offload {
1188: my ($dom_in_use,$lonhost_in_use) = @_;
1189: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1190: if (defined($cached)) {
1191: return $result;
1192: } else {
1193: my $cachetime = 60*60*24;
1194: my %domconfig =
1195: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1196: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1197: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1198: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1199: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1200: }
1201: }
1202: }
1203: }
1204: return;
1205: }
1206:
1207: sub get_lonbalancer_config {
1208: my ($servers) = @_;
1209: my ($currbalancer,$currtargets);
1210: if (ref($servers) eq 'HASH') {
1211: foreach my $server (keys(%{$servers})) {
1212: my %what = (
1213: spareid => 1,
1214: perlvar => 1,
1215: );
1216: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1217: if ($result eq 'ok') {
1218: if (ref($returnhash) eq 'HASH') {
1219: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1220: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1221: $currbalancer = $server;
1222: $currtargets = {};
1223: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1224: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1225: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1226: }
1227: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1228: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1229: }
1230: }
1231: last;
1232: }
1233: }
1234: }
1235: }
1236: }
1237: }
1238: return ($currbalancer,$currtargets);
1239: }
1240:
1241: sub check_loadbalancing {
1242: my ($uname,$udom) = @_;
1243: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1244: $rule_in_effect,$offloadto,$otherserver);
1245: my $lonhost = $perlvar{'lonHostID'};
1246: my @hosts = ¤t_machine_ids();
1247: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1248: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1249: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1250: my $serverhomedom = &host_domain($lonhost);
1251:
1252: my $cachetime = 60*60*24;
1253:
1254: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1255: $dom_in_use = $udom;
1256: $homeintdom = 1;
1257: } else {
1258: $dom_in_use = $serverhomedom;
1259: }
1260: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1261: unless (defined($cached)) {
1262: my %domconfig =
1263: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1264: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1265: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1266: }
1267: }
1268: if (ref($result) eq 'HASH') {
1269: ($is_balancer,$currtargets,$currrules) =
1270: &check_balancer_result($result,@hosts);
1271: if ($is_balancer) {
1272: if (ref($currrules) eq 'HASH') {
1273: if ($homeintdom) {
1274: if ($uname ne '') {
1275: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1276: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1277: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1278: $rule_in_effect = $currrules->{'_LC_author'};
1279: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1280: $rule_in_effect = $currrules->{'_LC_adv'}
1281: }
1282: }
1283: if ($rule_in_effect eq '') {
1284: my %userenv = &userenvironment($udom,$uname,'inststatus');
1285: if ($userenv{'inststatus'} ne '') {
1286: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1287: my ($othertitle,$usertypes,$types) =
1288: &Apache::loncommon::sorted_inst_types($udom);
1289: if (ref($types) eq 'ARRAY') {
1290: foreach my $type (@{$types}) {
1291: if (grep(/^\Q$type\E$/,@statuses)) {
1292: if (exists($currrules->{$type})) {
1293: $rule_in_effect = $currrules->{$type};
1294: }
1295: }
1296: }
1297: }
1298: } else {
1299: if (exists($currrules->{'default'})) {
1300: $rule_in_effect = $currrules->{'default'};
1301: }
1302: }
1303: }
1304: } else {
1305: if (exists($currrules->{'default'})) {
1306: $rule_in_effect = $currrules->{'default'};
1307: }
1308: }
1309: } else {
1310: if ($currrules->{'_LC_external'} ne '') {
1311: $rule_in_effect = $currrules->{'_LC_external'};
1312: }
1313: }
1314: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1315: $uname,$udom);
1316: }
1317: }
1318: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1319: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1320: unless (defined($cached)) {
1321: my %domconfig =
1322: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1323: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1324: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1325: }
1326: }
1327: if (ref($result) eq 'HASH') {
1328: ($is_balancer,$currtargets,$currrules) =
1329: &check_balancer_result($result,@hosts);
1330: if ($is_balancer) {
1331: if (ref($currrules) eq 'HASH') {
1332: if ($currrules->{'_LC_internetdom'} ne '') {
1333: $rule_in_effect = $currrules->{'_LC_internetdom'};
1334: }
1335: }
1336: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1337: $uname,$udom);
1338: }
1339: } else {
1340: if ($perlvar{'lonBalancer'} eq 'yes') {
1341: $is_balancer = 1;
1342: $offloadto = &this_host_spares($dom_in_use);
1343: }
1344: }
1345: } else {
1346: if ($perlvar{'lonBalancer'} eq 'yes') {
1347: $is_balancer = 1;
1348: $offloadto = &this_host_spares($dom_in_use);
1349: }
1350: }
1351: if ($is_balancer) {
1352: my $lowest_load = 30000;
1353: if (ref($offloadto) eq 'HASH') {
1354: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1355: foreach my $try_server (@{$offloadto->{'primary'}}) {
1356: ($otherserver,$lowest_load) =
1357: &compare_server_load($try_server,$otherserver,$lowest_load);
1358: }
1359: }
1360: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1361:
1362: if (!$found_server) {
1363: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1364: foreach my $try_server (@{$offloadto->{'default'}}) {
1365: ($otherserver,$lowest_load) =
1366: &compare_server_load($try_server,$otherserver,$lowest_load);
1367: }
1368: }
1369: }
1370: } elsif (ref($offloadto) eq 'ARRAY') {
1371: if (@{$offloadto} == 1) {
1372: $otherserver = $offloadto->[0];
1373: } elsif (@{$offloadto} > 1) {
1374: foreach my $try_server (@{$offloadto}) {
1375: ($otherserver,$lowest_load) =
1376: &compare_server_load($try_server,$otherserver,$lowest_load);
1377: }
1378: }
1379: }
1380: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1381: $is_balancer = 0;
1382: if ($uname ne '' && $udom ne '') {
1383: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1384:
1385: &appenv({'user.loadbalexempt' => $lonhost,
1386: 'user.loadbalcheck.time' => time});
1387: }
1388: }
1389: }
1390: }
1391: return ($is_balancer,$otherserver);
1392: }
1393:
1394: sub check_balancer_result {
1395: my ($result,@hosts) = @_;
1396: my ($is_balancer,$currtargets,$currrules);
1397: if (ref($result) eq 'HASH') {
1398: if ($result->{'lonhost'} ne '') {
1399: my $currbalancer = $result->{'lonhost'};
1400: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1401: $is_balancer = 1;
1402: $currtargets = $result->{'targets'};
1403: $currrules = $result->{'rules'};
1404: }
1405: } else {
1406: foreach my $key (keys(%{$result})) {
1407: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1408: (ref($result->{$key}) eq 'HASH')) {
1409: $is_balancer = 1;
1410: $currrules = $result->{$key}{'rules'};
1411: $currtargets = $result->{$key}{'targets'};
1412: last;
1413: }
1414: }
1415: }
1416: }
1417: return ($is_balancer,$currtargets,$currrules);
1418: }
1419:
1420: sub get_loadbalancer_targets {
1421: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1422: my $offloadto;
1423: if ($rule_in_effect eq 'none') {
1424: return [$perlvar{'lonHostID'}];
1425: } elsif ($rule_in_effect eq '') {
1426: $offloadto = $currtargets;
1427: } else {
1428: if ($rule_in_effect eq 'homeserver') {
1429: my $homeserver = &homeserver($uname,$udom);
1430: if ($homeserver ne 'no_host') {
1431: $offloadto = [$homeserver];
1432: }
1433: } elsif ($rule_in_effect eq 'externalbalancer') {
1434: my %domconfig =
1435: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1436: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1437: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1438: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1439: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1440: }
1441: }
1442: } else {
1443: my %servers = &internet_dom_servers($udom);
1444: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1445: if (&hostname($remotebalancer) ne '') {
1446: $offloadto = [$remotebalancer];
1447: }
1448: }
1449: } elsif (&hostname($rule_in_effect) ne '') {
1450: $offloadto = [$rule_in_effect];
1451: }
1452: }
1453: return $offloadto;
1454: }
1455:
1456: sub internet_dom_servers {
1457: my ($dom) = @_;
1458: my (%uniqservers,%servers);
1459: my $primaryserver = &hostname(&domain($dom,'primary'));
1460: my @machinedoms = &machine_domains($primaryserver);
1461: foreach my $mdom (@machinedoms) {
1462: my %currservers = %servers;
1463: my %server = &get_servers($mdom);
1464: %servers = (%currservers,%server);
1465: }
1466: my %by_hostname;
1467: foreach my $id (keys(%servers)) {
1468: push(@{$by_hostname{$servers{$id}}},$id);
1469: }
1470: foreach my $hostname (sort(keys(%by_hostname))) {
1471: if (@{$by_hostname{$hostname}} > 1) {
1472: my $match = 0;
1473: foreach my $id (@{$by_hostname{$hostname}}) {
1474: if (&host_domain($id) eq $dom) {
1475: $uniqservers{$id} = $hostname;
1476: $match = 1;
1477: }
1478: }
1479: unless ($match) {
1480: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1481: }
1482: } else {
1483: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1484: }
1485: }
1486: return %uniqservers;
1487: }
1488:
1489: # ---------------------- Find the homebase for a user from domain's lib servers
1490:
1491: my %homecache;
1492: sub homeserver {
1493: my ($uname,$udom,$ignoreBadCache)=@_;
1494: my $index="$uname:$udom";
1495:
1496: if (exists($homecache{$index})) { return $homecache{$index}; }
1497:
1498: my %servers = &get_servers($udom,'library');
1499: foreach my $tryserver (keys(%servers)) {
1500: next if ($ignoreBadCache ne 'true' &&
1501: exists($badServerCache{$tryserver}));
1502:
1503: my $answer=reply("home:$udom:$uname",$tryserver);
1504: if ($answer eq 'found') {
1505: delete($badServerCache{$tryserver});
1506: return $homecache{$index}=$tryserver;
1507: } elsif ($answer eq 'no_host') {
1508: $badServerCache{$tryserver}=1;
1509: }
1510: }
1511: return 'no_host';
1512: }
1513:
1514: # ------------------------------------- Find the usernames behind a list of IDs
1515:
1516: sub idget {
1517: my ($udom,@ids)=@_;
1518: my %returnhash=();
1519:
1520: my %servers = &get_servers($udom,'library');
1521: foreach my $tryserver (keys(%servers)) {
1522: my $idlist=join('&',@ids);
1523: $idlist=~tr/A-Z/a-z/;
1524: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1525: my @answer=();
1526: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1527: @answer=split(/\&/,$reply);
1528: } ;
1529: my $i;
1530: for ($i=0;$i<=$#ids;$i++) {
1531: if ($answer[$i]) {
1532: $returnhash{$ids[$i]}=$answer[$i];
1533: }
1534: }
1535: }
1536: return %returnhash;
1537: }
1538:
1539: # ------------------------------------- Find the IDs behind a list of usernames
1540:
1541: sub idrget {
1542: my ($udom,@unames)=@_;
1543: my %returnhash=();
1544: foreach my $uname (@unames) {
1545: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1546: }
1547: return %returnhash;
1548: }
1549:
1550: # ------------------------------- Store away a list of names and associated IDs
1551:
1552: sub idput {
1553: my ($udom,%ids)=@_;
1554: my %servers=();
1555: foreach my $uname (keys(%ids)) {
1556: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1557: my $uhom=&homeserver($uname,$udom);
1558: if ($uhom ne 'no_host') {
1559: my $id=&escape($ids{$uname});
1560: $id=~tr/A-Z/a-z/;
1561: my $esc_unam=&escape($uname);
1562: if ($servers{$uhom}) {
1563: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1564: } else {
1565: $servers{$uhom}=$id.'='.$esc_unam;
1566: }
1567: }
1568: }
1569: foreach my $server (keys(%servers)) {
1570: &critical('idput:'.$udom.':'.$servers{$server},$server);
1571: }
1572: }
1573:
1574: # ------------------------------dump from db file owned by domainconfig user
1575: sub dump_dom {
1576: my ($namespace, $udom, $regexp) = @_;
1577:
1578: $udom ||= $env{'user.domain'};
1579:
1580: return () unless $udom;
1581:
1582: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1583: }
1584:
1585: # ------------------------------------------ get items from domain db files
1586:
1587: sub get_dom {
1588: my ($namespace,$storearr,$udom,$uhome)=@_;
1589: my $items='';
1590: foreach my $item (@$storearr) {
1591: $items.=&escape($item).'&';
1592: }
1593: $items=~s/\&$//;
1594: if (!$udom) {
1595: $udom=$env{'user.domain'};
1596: if (defined(&domain($udom,'primary'))) {
1597: $uhome=&domain($udom,'primary');
1598: } else {
1599: undef($uhome);
1600: }
1601: } else {
1602: if (!$uhome) {
1603: if (defined(&domain($udom,'primary'))) {
1604: $uhome=&domain($udom,'primary');
1605: }
1606: }
1607: }
1608: if ($udom && $uhome && ($uhome ne 'no_host')) {
1609: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1610: my %returnhash;
1611: if ($rep eq '' || $rep =~ /^error: 2 /) {
1612: return %returnhash;
1613: }
1614: my @pairs=split(/\&/,$rep);
1615: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1616: return @pairs;
1617: }
1618: my $i=0;
1619: foreach my $item (@$storearr) {
1620: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1621: $i++;
1622: }
1623: return %returnhash;
1624: } else {
1625: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1626: }
1627: }
1628:
1629: # -------------------------------------------- put items in domain db files
1630:
1631: sub put_dom {
1632: my ($namespace,$storehash,$udom,$uhome)=@_;
1633: if (!$udom) {
1634: $udom=$env{'user.domain'};
1635: if (defined(&domain($udom,'primary'))) {
1636: $uhome=&domain($udom,'primary');
1637: } else {
1638: undef($uhome);
1639: }
1640: } else {
1641: if (!$uhome) {
1642: if (defined(&domain($udom,'primary'))) {
1643: $uhome=&domain($udom,'primary');
1644: }
1645: }
1646: }
1647: if ($udom && $uhome && ($uhome ne 'no_host')) {
1648: my $items='';
1649: foreach my $item (keys(%$storehash)) {
1650: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1651: }
1652: $items=~s/\&$//;
1653: return &reply("putdom:$udom:$namespace:$items",$uhome);
1654: } else {
1655: &logthis("put_dom failed - no homeserver and/or domain");
1656: }
1657: }
1658:
1659: # --------------------- newput for items in db file owned by domainconfig user
1660: sub newput_dom {
1661: my ($namespace,$storehash,$udom) = @_;
1662: my $result;
1663: if (!$udom) {
1664: $udom=$env{'user.domain'};
1665: }
1666: if ($udom) {
1667: my $uname = &get_domainconfiguser($udom);
1668: $result = &newput($namespace,$storehash,$udom,$uname);
1669: }
1670: return $result;
1671: }
1672:
1673: # --------------------- delete for items in db file owned by domainconfig user
1674: sub del_dom {
1675: my ($namespace,$storearr,$udom)=@_;
1676: if (ref($storearr) eq 'ARRAY') {
1677: if (!$udom) {
1678: $udom=$env{'user.domain'};
1679: }
1680: if ($udom) {
1681: my $uname = &get_domainconfiguser($udom);
1682: return &del($namespace,$storearr,$udom,$uname);
1683: }
1684: }
1685: }
1686:
1687: # ----------------------------------construct domainconfig user for a domain
1688: sub get_domainconfiguser {
1689: my ($udom) = @_;
1690: return $udom.'-domainconfig';
1691: }
1692:
1693: sub retrieve_inst_usertypes {
1694: my ($udom) = @_;
1695: my (%returnhash,@order);
1696: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1697: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1698: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1699: %returnhash = %{$domdefs{'inststatustypes'}};
1700: @order = @{$domdefs{'inststatusorder'}};
1701: } else {
1702: if (defined(&domain($udom,'primary'))) {
1703: my $uhome=&domain($udom,'primary');
1704: my $rep=&reply("inst_usertypes:$udom",$uhome);
1705: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1706: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1707: return (\%returnhash,\@order);
1708: }
1709: my ($hashitems,$orderitems) = split(/:/,$rep);
1710: my @pairs=split(/\&/,$hashitems);
1711: foreach my $item (@pairs) {
1712: my ($key,$value)=split(/=/,$item,2);
1713: $key = &unescape($key);
1714: next if ($key =~ /^error: 2 /);
1715: $returnhash{$key}=&thaw_unescape($value);
1716: }
1717: my @esc_order = split(/\&/,$orderitems);
1718: foreach my $item (@esc_order) {
1719: push(@order,&unescape($item));
1720: }
1721: } else {
1722: &logthis("get_dom failed - no primary domain server for $udom");
1723: }
1724: }
1725: return (\%returnhash,\@order);
1726: }
1727:
1728: sub is_domainimage {
1729: my ($url) = @_;
1730: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1731: if (&domain($1) ne '') {
1732: return '1';
1733: }
1734: }
1735: return;
1736: }
1737:
1738: sub inst_directory_query {
1739: my ($srch) = @_;
1740: my $udom = $srch->{'srchdomain'};
1741: my %results;
1742: my $homeserver = &domain($udom,'primary');
1743: my $outcome;
1744: if ($homeserver ne '') {
1745: my $queryid=&reply("querysend:instdirsearch:".
1746: &escape($srch->{'srchby'}).':'.
1747: &escape($srch->{'srchterm'}).':'.
1748: &escape($srch->{'srchtype'}),$homeserver);
1749: my $host=&hostname($homeserver);
1750: if ($queryid !~/^\Q$host\E\_/) {
1751: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1752: return;
1753: }
1754: my $response = &get_query_reply($queryid);
1755: my $maxtries = 5;
1756: my $tries = 1;
1757: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1758: $response = &get_query_reply($queryid);
1759: $tries ++;
1760: }
1761:
1762: if (!&error($response) && $response ne 'refused') {
1763: if ($response eq 'unavailable') {
1764: $outcome = $response;
1765: } else {
1766: $outcome = 'ok';
1767: my @matches = split(/\n/,$response);
1768: foreach my $match (@matches) {
1769: my ($key,$value) = split(/=/,$match);
1770: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1771: }
1772: }
1773: }
1774: }
1775: return ($outcome,%results);
1776: }
1777:
1778: sub usersearch {
1779: my ($srch) = @_;
1780: my $dom = $srch->{'srchdomain'};
1781: my %results;
1782: my %libserv = &all_library();
1783: my $query = 'usersearch';
1784: foreach my $tryserver (keys(%libserv)) {
1785: if (&host_domain($tryserver) eq $dom) {
1786: my $host=&hostname($tryserver);
1787: my $queryid=
1788: &reply("querysend:".&escape($query).':'.
1789: &escape($srch->{'srchby'}).':'.
1790: &escape($srch->{'srchtype'}).':'.
1791: &escape($srch->{'srchterm'}),$tryserver);
1792: if ($queryid !~/^\Q$host\E\_/) {
1793: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1794: next;
1795: }
1796: my $reply = &get_query_reply($queryid);
1797: my $maxtries = 1;
1798: my $tries = 1;
1799: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1800: $reply = &get_query_reply($queryid);
1801: $tries ++;
1802: }
1803: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1804: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1805: } else {
1806: my @matches;
1807: if ($reply =~ /\n/) {
1808: @matches = split(/\n/,$reply);
1809: } else {
1810: @matches = split(/\&/,$reply);
1811: }
1812: foreach my $match (@matches) {
1813: my ($uname,$udom,%userhash);
1814: foreach my $entry (split(/:/,$match)) {
1815: my ($key,$value) =
1816: map {&unescape($_);} split(/=/,$entry);
1817: $userhash{$key} = $value;
1818: if ($key eq 'username') {
1819: $uname = $value;
1820: } elsif ($key eq 'domain') {
1821: $udom = $value;
1822: }
1823: }
1824: $results{$uname.':'.$udom} = \%userhash;
1825: }
1826: }
1827: }
1828: }
1829: return %results;
1830: }
1831:
1832: sub get_instuser {
1833: my ($udom,$uname,$id) = @_;
1834: my $homeserver = &domain($udom,'primary');
1835: my ($outcome,%results);
1836: if ($homeserver ne '') {
1837: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1838: &escape($id).':'.&escape($udom),$homeserver);
1839: my $host=&hostname($homeserver);
1840: if ($queryid !~/^\Q$host\E\_/) {
1841: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1842: return;
1843: }
1844: my $response = &get_query_reply($queryid);
1845: my $maxtries = 5;
1846: my $tries = 1;
1847: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1848: $response = &get_query_reply($queryid);
1849: $tries ++;
1850: }
1851: if (!&error($response) && $response ne 'refused') {
1852: if ($response eq 'unavailable') {
1853: $outcome = $response;
1854: } else {
1855: $outcome = 'ok';
1856: my @matches = split(/\n/,$response);
1857: foreach my $match (@matches) {
1858: my ($key,$value) = split(/=/,$match);
1859: $results{&unescape($key)} = &thaw_unescape($value);
1860: }
1861: }
1862: }
1863: }
1864: my %userinfo;
1865: if (ref($results{$uname}) eq 'HASH') {
1866: %userinfo = %{$results{$uname}};
1867: }
1868: return ($outcome,%userinfo);
1869: }
1870:
1871: sub inst_rulecheck {
1872: my ($udom,$uname,$id,$item,$rules) = @_;
1873: my %returnhash;
1874: if ($udom ne '') {
1875: if (ref($rules) eq 'ARRAY') {
1876: @{$rules} = map {&escape($_);} (@{$rules});
1877: my $rulestr = join(':',@{$rules});
1878: my $homeserver=&domain($udom,'primary');
1879: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1880: my $response;
1881: if ($item eq 'username') {
1882: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1883: ':'.&escape($uname).':'.$rulestr,
1884: $homeserver));
1885: } elsif ($item eq 'id') {
1886: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1887: ':'.&escape($id).':'.$rulestr,
1888: $homeserver));
1889: } elsif ($item eq 'selfcreate') {
1890: $response=&unescape(&reply('instselfcreatecheck:'.
1891: &escape($udom).':'.&escape($uname).
1892: ':'.$rulestr,$homeserver));
1893: }
1894: if ($response ne 'refused') {
1895: my @pairs=split(/\&/,$response);
1896: foreach my $item (@pairs) {
1897: my ($key,$value)=split(/=/,$item,2);
1898: $key = &unescape($key);
1899: next if ($key =~ /^error: 2 /);
1900: $returnhash{$key}=&thaw_unescape($value);
1901: }
1902: }
1903: }
1904: }
1905: }
1906: return %returnhash;
1907: }
1908:
1909: sub inst_userrules {
1910: my ($udom,$check) = @_;
1911: my (%ruleshash,@ruleorder);
1912: if ($udom ne '') {
1913: my $homeserver=&domain($udom,'primary');
1914: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1915: my $response;
1916: if ($check eq 'id') {
1917: $response=&reply('instidrules:'.&escape($udom),
1918: $homeserver);
1919: } elsif ($check eq 'email') {
1920: $response=&reply('instemailrules:'.&escape($udom),
1921: $homeserver);
1922: } else {
1923: $response=&reply('instuserrules:'.&escape($udom),
1924: $homeserver);
1925: }
1926: if (($response ne 'refused') && ($response ne 'error') &&
1927: ($response ne 'unknown_cmd') &&
1928: ($response ne 'no_such_host')) {
1929: my ($hashitems,$orderitems) = split(/:/,$response);
1930: my @pairs=split(/\&/,$hashitems);
1931: foreach my $item (@pairs) {
1932: my ($key,$value)=split(/=/,$item,2);
1933: $key = &unescape($key);
1934: next if ($key =~ /^error: 2 /);
1935: $ruleshash{$key}=&thaw_unescape($value);
1936: }
1937: my @esc_order = split(/\&/,$orderitems);
1938: foreach my $item (@esc_order) {
1939: push(@ruleorder,&unescape($item));
1940: }
1941: }
1942: }
1943: }
1944: return (\%ruleshash,\@ruleorder);
1945: }
1946:
1947: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1948:
1949: sub get_domain_defaults {
1950: my ($domain) = @_;
1951: my $cachetime = 60*60*24;
1952: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1953: if (defined($cached)) {
1954: if (ref($result) eq 'HASH') {
1955: return %{$result};
1956: }
1957: }
1958: my %domdefaults;
1959: my %domconfig =
1960: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1961: 'requestcourses','inststatus',
1962: 'coursedefaults','usersessions',
1963: 'requestauthor'],$domain);
1964: if (ref($domconfig{'defaults'}) eq 'HASH') {
1965: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1966: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1967: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1968: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1969: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1970: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1971: } else {
1972: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1973: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1974: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1975: }
1976: if (ref($domconfig{'quotas'}) eq 'HASH') {
1977: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1978: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1979: } else {
1980: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1981: }
1982: my @usertools = ('aboutme','blog','webdav','portfolio');
1983: foreach my $item (@usertools) {
1984: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1985: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1986: }
1987: }
1988: }
1989: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1990: foreach my $item ('official','unofficial','community') {
1991: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1992: }
1993: }
1994: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
1995: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
1996: }
1997: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1998: foreach my $item ('inststatustypes','inststatusorder') {
1999: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2000: }
2001: }
2002: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2003: foreach my $item ('canuse_pdfforms') {
2004: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
2005: }
2006: }
2007: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2008: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2009: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2010: }
2011: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2012: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2013: }
2014: }
2015: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
2016: $cachetime);
2017: return %domdefaults;
2018: }
2019:
2020: # --------------------------------------------------- Assign a key to a student
2021:
2022: sub assign_access_key {
2023: #
2024: # a valid key looks like uname:udom#comments
2025: # comments are being appended
2026: #
2027: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2028: $kdom=
2029: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2030: $knum=
2031: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2032: $cdom=
2033: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2034: $cnum=
2035: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2036: $udom=$env{'user.name'} unless (defined($udom));
2037: $uname=$env{'user.domain'} unless (defined($uname));
2038: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2039: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2040: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2041: # assigned to this person
2042: # - this should not happen,
2043: # unless something went wrong
2044: # the first time around
2045: # ready to assign
2046: $logentry=$1.'; '.$logentry;
2047: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2048: $kdom,$knum) eq 'ok') {
2049: # key now belongs to user
2050: my $envkey='key.'.$cdom.'_'.$cnum;
2051: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2052: &appenv({'environment.'.$envkey => $ckey});
2053: return 'ok';
2054: } else {
2055: return
2056: 'error: Count not permanently assign key, will need to be re-entered later.';
2057: }
2058: } else {
2059: return 'error: Could not assign key, try again later.';
2060: }
2061: } elsif (!$existing{$ckey}) {
2062: # the key does not exist
2063: return 'error: The key does not exist';
2064: } else {
2065: # the key is somebody else's
2066: return 'error: The key is already in use';
2067: }
2068: }
2069:
2070: # ------------------------------------------ put an additional comment on a key
2071:
2072: sub comment_access_key {
2073: #
2074: # a valid key looks like uname:udom#comments
2075: # comments are being appended
2076: #
2077: my ($ckey,$cdom,$cnum,$logentry)=@_;
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: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2083: if ($existing{$ckey}) {
2084: $existing{$ckey}.='; '.$logentry;
2085: # ready to assign
2086: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2087: $cdom,$cnum) eq 'ok') {
2088: return 'ok';
2089: } else {
2090: return 'error: Count not store comment.';
2091: }
2092: } else {
2093: # the key does not exist
2094: return 'error: The key does not exist';
2095: }
2096: }
2097:
2098: # ------------------------------------------------------ Generate a set of keys
2099:
2100: sub generate_access_keys {
2101: my ($number,$cdom,$cnum,$logentry)=@_;
2102: $cdom=
2103: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2104: $cnum=
2105: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2106: unless (&allowed('mky',$cdom)) { return 0; }
2107: unless (($cdom) && ($cnum)) { return 0; }
2108: if ($number>10000) { return 0; }
2109: sleep(2); # make sure don't get same seed twice
2110: srand(time()^($$+($$<<15))); # from "Programming Perl"
2111: my $total=0;
2112: for (my $i=1;$i<=$number;$i++) {
2113: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2114: sprintf("%lx",int(100000*rand)).'-'.
2115: sprintf("%lx",int(100000*rand));
2116: $newkey=~s/1/g/g; # folks mix up 1 and l
2117: $newkey=~s/0/h/g; # and also 0 and O
2118: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2119: if ($existing{$newkey}) {
2120: $i--;
2121: } else {
2122: if (&put('accesskeys',
2123: { $newkey => '# generated '.localtime().
2124: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2125: '; '.$logentry },
2126: $cdom,$cnum) eq 'ok') {
2127: $total++;
2128: }
2129: }
2130: }
2131: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2132: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2133: return $total;
2134: }
2135:
2136: # ------------------------------------------------------- Validate an accesskey
2137:
2138: sub validate_access_key {
2139: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2140: $cdom=
2141: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2142: $cnum=
2143: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2144: $udom=$env{'user.domain'} unless (defined($udom));
2145: $uname=$env{'user.name'} unless (defined($uname));
2146: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2147: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2148: }
2149:
2150: # ------------------------------------- Find the section of student in a course
2151: sub devalidate_getsection_cache {
2152: my ($udom,$unam,$courseid)=@_;
2153: my $hashid="$udom:$unam:$courseid";
2154: &devalidate_cache_new('getsection',$hashid);
2155: }
2156:
2157: sub courseid_to_courseurl {
2158: my ($courseid) = @_;
2159: #already url style courseid
2160: return $courseid if ($courseid =~ m{^/});
2161:
2162: if (exists($env{'course.'.$courseid.'.num'})) {
2163: my $cnum = $env{'course.'.$courseid.'.num'};
2164: my $cdom = $env{'course.'.$courseid.'.domain'};
2165: return "/$cdom/$cnum";
2166: }
2167:
2168: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2169: if (exists($courseinfo{'num'})) {
2170: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2171: }
2172:
2173: return undef;
2174: }
2175:
2176: sub getsection {
2177: my ($udom,$unam,$courseid)=@_;
2178: my $cachetime=1800;
2179:
2180: my $hashid="$udom:$unam:$courseid";
2181: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2182: if (defined($cached)) { return $result; }
2183:
2184: my %Pending;
2185: my %Expired;
2186: #
2187: # Each role can either have not started yet (pending), be active,
2188: # or have expired.
2189: #
2190: # If there is an active role, we are done.
2191: #
2192: # If there is more than one role which has not started yet,
2193: # choose the one which will start sooner
2194: # If there is one role which has not started yet, return it.
2195: #
2196: # If there is more than one expired role, choose the one which ended last.
2197: # If there is a role which has expired, return it.
2198: #
2199: $courseid = &courseid_to_courseurl($courseid);
2200: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2201: foreach my $key (keys(%roleshash)) {
2202: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2203: my $section=$1;
2204: if ($key eq $courseid.'_st') { $section=''; }
2205: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2206: my $now=time;
2207: if (defined($end) && $end && ($now > $end)) {
2208: $Expired{$end}=$section;
2209: next;
2210: }
2211: if (defined($start) && $start && ($now < $start)) {
2212: $Pending{$start}=$section;
2213: next;
2214: }
2215: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2216: }
2217: #
2218: # Presumedly there will be few matching roles from the above
2219: # loop and the sorting time will be negligible.
2220: if (scalar(keys(%Pending))) {
2221: my ($time) = sort {$a <=> $b} keys(%Pending);
2222: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2223: }
2224: if (scalar(keys(%Expired))) {
2225: my @sorted = sort {$a <=> $b} keys(%Expired);
2226: my $time = pop(@sorted);
2227: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2228: }
2229: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2230: }
2231:
2232: sub save_cache {
2233: &purge_remembered();
2234: #&Apache::loncommon::validate_page();
2235: undef(%env);
2236: undef($env_loaded);
2237: }
2238:
2239: my $to_remember=-1;
2240: my %remembered;
2241: my %accessed;
2242: my $kicks=0;
2243: my $hits=0;
2244: sub make_key {
2245: my ($name,$id) = @_;
2246: if (length($id) > 65
2247: && length(&escape($id)) > 200) {
2248: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2249: }
2250: return &escape($name.':'.$id);
2251: }
2252:
2253: sub devalidate_cache_new {
2254: my ($name,$id,$debug) = @_;
2255: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2256: $id=&make_key($name,$id);
2257: $memcache->delete($id);
2258: delete($remembered{$id});
2259: delete($accessed{$id});
2260: }
2261:
2262: sub is_cached_new {
2263: my ($name,$id,$debug) = @_;
2264: $id=&make_key($name,$id);
2265: if (exists($remembered{$id})) {
2266: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2267: $accessed{$id}=[&gettimeofday()];
2268: $hits++;
2269: return ($remembered{$id},1);
2270: }
2271: my $value = $memcache->get($id);
2272: if (!(defined($value))) {
2273: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2274: return (undef,undef);
2275: }
2276: if ($value eq '__undef__') {
2277: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2278: $value=undef;
2279: }
2280: &make_room($id,$value,$debug);
2281: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2282: return ($value,1);
2283: }
2284:
2285: sub do_cache_new {
2286: my ($name,$id,$value,$time,$debug) = @_;
2287: $id=&make_key($name,$id);
2288: my $setvalue=$value;
2289: if (!defined($setvalue)) {
2290: $setvalue='__undef__';
2291: }
2292: if (!defined($time) ) {
2293: $time=600;
2294: }
2295: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2296: my $result = $memcache->set($id,$setvalue,$time);
2297: if (! $result) {
2298: &logthis("caching of id -> $id failed");
2299: $memcache->disconnect_all();
2300: }
2301: # need to make a copy of $value
2302: &make_room($id,$value,$debug);
2303: return $value;
2304: }
2305:
2306: sub make_room {
2307: my ($id,$value,$debug)=@_;
2308:
2309: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2310: : $value;
2311: if ($to_remember<0) { return; }
2312: $accessed{$id}=[&gettimeofday()];
2313: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2314: my $to_kick;
2315: my $max_time=0;
2316: foreach my $other (keys(%accessed)) {
2317: if (&tv_interval($accessed{$other}) > $max_time) {
2318: $to_kick=$other;
2319: $max_time=&tv_interval($accessed{$other});
2320: }
2321: }
2322: delete($remembered{$to_kick});
2323: delete($accessed{$to_kick});
2324: $kicks++;
2325: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2326: return;
2327: }
2328:
2329: sub purge_remembered {
2330: #&logthis("Tossing ".scalar(keys(%remembered)));
2331: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2332: undef(%remembered);
2333: undef(%accessed);
2334: }
2335: # ------------------------------------- Read an entry from a user's environment
2336:
2337: sub userenvironment {
2338: my ($udom,$unam,@what)=@_;
2339: my $items;
2340: foreach my $item (@what) {
2341: $items.=&escape($item).'&';
2342: }
2343: $items=~s/\&$//;
2344: my %returnhash=();
2345: my $uhome = &homeserver($unam,$udom);
2346: unless ($uhome eq 'no_host') {
2347: my @answer=split(/\&/,
2348: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2349: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2350: return %returnhash;
2351: }
2352: my $i;
2353: for ($i=0;$i<=$#what;$i++) {
2354: $returnhash{$what[$i]}=&unescape($answer[$i]);
2355: }
2356: }
2357: return %returnhash;
2358: }
2359:
2360: # ---------------------------------------------------------- Get a studentphoto
2361: sub studentphoto {
2362: my ($udom,$unam,$ext) = @_;
2363: my $home=&Apache::lonnet::homeserver($unam,$udom);
2364: if (defined($env{'request.course.id'})) {
2365: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2366: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2367: return(&retrievestudentphoto($udom,$unam,$ext));
2368: } else {
2369: my ($result,$perm_reqd)=
2370: &Apache::lonnet::auto_photo_permission($unam,$udom);
2371: if ($result eq 'ok') {
2372: if (!($perm_reqd eq 'yes')) {
2373: return(&retrievestudentphoto($udom,$unam,$ext));
2374: }
2375: }
2376: }
2377: }
2378: } else {
2379: my ($result,$perm_reqd) =
2380: &Apache::lonnet::auto_photo_permission($unam,$udom);
2381: if ($result eq 'ok') {
2382: if (!($perm_reqd eq 'yes')) {
2383: return(&retrievestudentphoto($udom,$unam,$ext));
2384: }
2385: }
2386: }
2387: return '/adm/lonKaputt/lonlogo_broken.gif';
2388: }
2389:
2390: sub retrievestudentphoto {
2391: my ($udom,$unam,$ext,$type) = @_;
2392: my $home=&Apache::lonnet::homeserver($unam,$udom);
2393: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2394: if ($ret eq 'ok') {
2395: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2396: if ($type eq 'thumbnail') {
2397: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2398: }
2399: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2400: return $tokenurl;
2401: } else {
2402: if ($type eq 'thumbnail') {
2403: return '/adm/lonKaputt/genericstudent_tn.gif';
2404: } else {
2405: return '/adm/lonKaputt/lonlogo_broken.gif';
2406: }
2407: }
2408: }
2409:
2410: # -------------------------------------------------------------------- New chat
2411:
2412: sub chatsend {
2413: my ($newentry,$anon,$group)=@_;
2414: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2415: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2416: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2417: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2418: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2419: &escape($newentry)).':'.$group,$chome);
2420: }
2421:
2422: # ------------------------------------------ Find current version of a resource
2423:
2424: sub getversion {
2425: my $fname=&clutter(shift);
2426: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2427: return ¤tversion(&filelocation('',$fname));
2428: }
2429:
2430: sub currentversion {
2431: my $fname=shift;
2432: my $author=$fname;
2433: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2434: my ($udom,$uname)=split(/\//,$author);
2435: my $home=&homeserver($uname,$udom);
2436: if ($home eq 'no_host') {
2437: return -1;
2438: }
2439: my $answer=&reply("currentversion:$fname",$home);
2440: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2441: return -1;
2442: }
2443: return $answer;
2444: }
2445:
2446: #
2447: # Return special version number of resource if set by override, empty otherwise
2448: #
2449: sub usedversion {
2450: my $fname=shift;
2451: unless ($fname) { $fname=$env{'request.uri'}; }
2452: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2453: if ($urlversion) { return $urlversion; }
2454: return '';
2455: }
2456:
2457: # ----------------------------- Subscribe to a resource, return URL if possible
2458:
2459: sub subscribe {
2460: my $fname=shift;
2461: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2462: $fname=~s/[\n\r]//g;
2463: my $author=$fname;
2464: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2465: my ($udom,$uname)=split(/\//,$author);
2466: my $home=homeserver($uname,$udom);
2467: if ($home eq 'no_host') {
2468: return 'not_found';
2469: }
2470: my $answer=reply("sub:$fname",$home);
2471: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2472: $answer.=' by '.$home;
2473: }
2474: return $answer;
2475: }
2476:
2477: # -------------------------------------------------------------- Replicate file
2478:
2479: sub repcopy {
2480: my $filename=shift;
2481: $filename=~s/\/+/\//g;
2482: my $londocroot = $perlvar{'lonDocRoot'};
2483: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2484: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2485: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2486: $filename=~m{^/*(uploaded|editupload)/}) {
2487: return &repcopy_userfile($filename);
2488: }
2489: $filename=~s/[\n\r]//g;
2490: my $transname="$filename.in.transfer";
2491: # FIXME: this should flock
2492: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2493: my $remoteurl=subscribe($filename);
2494: if ($remoteurl =~ /^con_lost by/) {
2495: &logthis("Subscribe returned $remoteurl: $filename");
2496: return 'unavailable';
2497: } elsif ($remoteurl eq 'not_found') {
2498: #&logthis("Subscribe returned not_found: $filename");
2499: return 'not_found';
2500: } elsif ($remoteurl =~ /^rejected by/) {
2501: &logthis("Subscribe returned $remoteurl: $filename");
2502: return 'forbidden';
2503: } elsif ($remoteurl eq 'directory') {
2504: return 'ok';
2505: } else {
2506: my $author=$filename;
2507: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2508: my ($udom,$uname)=split(/\//,$author);
2509: my $home=homeserver($uname,$udom);
2510: unless ($home eq $perlvar{'lonHostID'}) {
2511: my @parts=split(/\//,$filename);
2512: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2513: if ($path ne "$londocroot/res") {
2514: &logthis("Malconfiguration for replication: $filename");
2515: return 'bad_request';
2516: }
2517: my $count;
2518: for ($count=5;$count<$#parts;$count++) {
2519: $path.="/$parts[$count]";
2520: if ((-e $path)!=1) {
2521: mkdir($path,0777);
2522: }
2523: }
2524: my $ua=new LWP::UserAgent;
2525: my $request=new HTTP::Request('GET',"$remoteurl");
2526: my $response=$ua->request($request,$transname);
2527: if ($response->is_error()) {
2528: unlink($transname);
2529: my $message=$response->status_line;
2530: &logthis("<font color=\"blue\">WARNING:"
2531: ." LWP get: $message: $filename</font>");
2532: return 'unavailable';
2533: } else {
2534: if ($remoteurl!~/\.meta$/) {
2535: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2536: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2537: if ($mresponse->is_error()) {
2538: unlink($filename.'.meta');
2539: &logthis(
2540: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2541: }
2542: }
2543: rename($transname,$filename);
2544: return 'ok';
2545: }
2546: }
2547: }
2548: }
2549:
2550: # ------------------------------------------------ Get server side include body
2551: sub ssi_body {
2552: my ($filelink,%form)=@_;
2553: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2554: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2555: }
2556: my $output='';
2557: my $response;
2558: if ($filelink=~/^https?\:/) {
2559: ($output,$response)=&externalssi($filelink);
2560: } else {
2561: $filelink .= $filelink=~/\?/ ? '&' : '?';
2562: $filelink .= 'inhibitmenu=yes';
2563: ($output,$response)=&ssi($filelink,%form);
2564: }
2565: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2566: $output=~s/^.*?\<body[^\>]*\>//si;
2567: $output=~s/\<\/body\s*\>.*?$//si;
2568: if (wantarray) {
2569: return ($output, $response);
2570: } else {
2571: return $output;
2572: }
2573: }
2574:
2575: # --------------------------------------------------------- Server Side Include
2576:
2577: sub absolute_url {
2578: my ($host_name) = @_;
2579: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2580: if ($host_name eq '') {
2581: $host_name = $ENV{'SERVER_NAME'};
2582: }
2583: return $protocol.$host_name;
2584: }
2585:
2586: #
2587: # Server side include.
2588: # Parameters:
2589: # fn Possibly encrypted resource name/id.
2590: # form Hash that describes how the rendering should be done
2591: # and other things.
2592: # Returns:
2593: # Scalar context: The content of the response.
2594: # Array context: 2 element list of the content and the full response object.
2595: #
2596: sub ssi {
2597:
2598: my ($fn,%form)=@_;
2599: my $ua=new LWP::UserAgent;
2600: my $request;
2601:
2602: $form{'no_update_last_known'}=1;
2603: &Apache::lonenc::check_encrypt(\$fn);
2604: if (%form) {
2605: $request=new HTTP::Request('POST',&absolute_url().$fn);
2606: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2607: } else {
2608: $request=new HTTP::Request('GET',&absolute_url().$fn);
2609: }
2610:
2611: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2612: my $response= $ua->request($request);
2613: my $content = $response->content;
2614:
2615:
2616: if (wantarray) {
2617: return ($content, $response);
2618: } else {
2619: return $content;
2620: }
2621: }
2622:
2623: sub externalssi {
2624: my ($url)=@_;
2625: my $ua=new LWP::UserAgent;
2626: my $request=new HTTP::Request('GET',$url);
2627: my $response=$ua->request($request);
2628: if (wantarray) {
2629: return ($response->content, $response);
2630: } else {
2631: return $response->content;
2632: }
2633: }
2634:
2635: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2636:
2637: sub allowuploaded {
2638: my ($srcurl,$url)=@_;
2639: $url=&clutter(&declutter($url));
2640: my $dir=$url;
2641: $dir=~s/\/[^\/]+$//;
2642: my %httpref=();
2643: my $httpurl=&hreflocation('',$url);
2644: $httpref{'httpref.'.$httpurl}=$srcurl;
2645: &Apache::lonnet::appenv(\%httpref);
2646: }
2647:
2648: #
2649: # Determine if the current user should be able to edit a particular resource,
2650: # when viewing in course context.
2651: # (a) When viewing resource used to determine if "Edit" item is included in
2652: # Functions.
2653: # (b) When displaying folder contents in course editor, used to determine if
2654: # "Edit" link will be displayed alongside resource.
2655: #
2656: # input: six args -- filename (decluttered), course number, course domain,
2657: # url, symb (if registered) and group (if this is a group
2658: # item -- e.g., bulletin board, group page etc.).
2659: # output: array of five scalars --
2660: # $cfile -- url for file editing if editable on current server
2661: # $home -- homeserver of resource (i.e., for author if published,
2662: # or course if uploaded.).
2663: # $switchserver -- 1 if server switch will be needed.
2664: # $forceedit -- 1 if icon/link should be to go to edit mode
2665: # $forceview -- 1 if icon/link should be to go to view mode
2666: #
2667:
2668: sub can_edit_resource {
2669: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2670: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2671: #
2672: # For aboutme pages user can only edit his/her own.
2673: #
2674: if ($resurl =~ m{^/adm/($match_domain)/($match_username)/aboutme$}) {
2675: my ($sdom,$sname) = ($1,$2);
2676: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2677: $home = $env{'user.home'};
2678: $cfile = $resurl;
2679: if ($env{'form.forceedit'}) {
2680: $forceview = 1;
2681: } else {
2682: $forceedit = 1;
2683: }
2684: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2685: } else {
2686: return;
2687: }
2688: }
2689:
2690: if ($env{'request.course.id'}) {
2691: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2692: if ($group ne '') {
2693: # if this is a group homepage or group bulletin board, check group privs
2694: my $allowed = 0;
2695: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2696: if ((&allowed('mdg',$env{'request.course.id'}.
2697: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2698: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2699: $allowed = 1;
2700: }
2701: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2702: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2703: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2704: $allowed = 1;
2705: }
2706: }
2707: if ($allowed) {
2708: $home=&homeserver($cnum,$cdom);
2709: if ($env{'form.forceedit'}) {
2710: $forceview = 1;
2711: } else {
2712: $forceedit = 1;
2713: }
2714: $cfile = $resurl;
2715: } else {
2716: return;
2717: }
2718: } else {
2719: #
2720: # No edit allowed where CC has switched to student role.
2721: #
2722: unless ($crsedit) {
2723: return;
2724: }
2725: }
2726: }
2727:
2728: if ($file ne '') {
2729: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2730: if (&is_course_upload($file,$cnum,$cdom)) {
2731: $uploaded = 1;
2732: $incourse = 1;
2733: if ($file =~/\.(htm|html|css|js|txt)$/) {
2734: $cfile = &hreflocation('',$file);
2735: $forceedit = 1;
2736: }
2737: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2738: $incourse = 1;
2739: if ($env{'form.forceedit'}) {
2740: $forceview = 1;
2741: } else {
2742: $forceedit = 1;
2743: }
2744: $cfile = $resurl;
2745: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2746: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2747: $incourse = 1;
2748: if ($env{'form.forceedit'}) {
2749: $forceview = 1;
2750: } else {
2751: $forceedit = 1;
2752: }
2753: $cfile = $resurl;
2754: } elsif (($resurl eq '/res/lib/templates/simpleproblem.problem')) {
2755: $incourse = 1;
2756: $cfile = $resurl.'/smpedit';
2757: } elsif ($resurl =~ /ext/) {
2758: $incourse = 1;
2759: # is external
2760: }
2761: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2762: my $template = '/res/lib/templates/simpleproblem.problem';
2763: if (&is_on_map($template)) {
2764: $incourse = 1;
2765: $forceview = 1;
2766: $cfile = $template;
2767: }
2768: }
2769: }
2770: if ($uploaded || $incourse) {
2771: $home=&homeserver($cnum,$cdom);
2772: } else {
2773: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2774: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2775: # Check that the user has permission to edit this resource
2776: my $setpriv = 1;
2777: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2778: if (defined($cfudom)) {
2779: $home=&homeserver($cfuname,$cfudom);
2780: $cfile=$file;
2781: }
2782: }
2783: if (($cfile ne '') && (!$incourse || $uploaded) &&
2784: (($home ne '') && ($home ne 'no_host'))) {
2785: my @ids=¤t_machine_ids();
2786: unless (grep(/^\Q$home\E$/,@ids)) {
2787: $switchserver=1;
2788: }
2789: }
2790: }
2791: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2792: }
2793:
2794: sub is_course_upload {
2795: my ($file,$cnum,$cdom) = @_;
2796: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2797: $uploadpath =~ s{^\/}{};
2798: if (($file =~ m{^\Q$uploadpath\E/userfiles/docs/}) ||
2799: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/docs/})) {
2800: return 1;
2801: }
2802: return;
2803: }
2804:
2805: sub in_course {
2806: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2807: if ($hideprivileged) {
2808: my $skipuser;
2809: if (&privileged($uname,$udom)) {
2810: $skipuser = 1;
2811: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2812: if ($coursehash{'nothideprivileged'}) {
2813: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2814: my $user;
2815: if ($item =~ /:/) {
2816: $user = $item;
2817: } else {
2818: $user = join(':',split(/[\@]/,$item));
2819: }
2820: if ($user eq $uname.':'.$udom) {
2821: undef($skipuser);
2822: last;
2823: }
2824: }
2825: }
2826: if ($skipuser) {
2827: return 0;
2828: }
2829: }
2830: }
2831: $type ||= 'any';
2832: if (!defined($cdom) || !defined($cnum)) {
2833: my $cid = $env{'request.course.id'};
2834: $cdom = $env{'course.'.$cid.'.domain'};
2835: $cnum = $env{'course.'.$cid.'.num'};
2836: }
2837: my $typesref;
2838: if (($type eq 'any') || ($type eq 'all')) {
2839: $typesref = ['active','previous','future'];
2840: } elsif ($type eq 'previous' || $type eq 'future') {
2841: $typesref = [$type];
2842: }
2843: my %roles = &get_my_roles($uname,$udom,'userroles',
2844: $typesref,undef,[$cdom]);
2845: my ($tmp) = keys(%roles);
2846: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2847: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2848: if (@course_roles > 0) {
2849: return 1;
2850: }
2851: return 0;
2852: }
2853:
2854: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2855: # input: action, courseID, current domain, intended
2856: # path to file, source of file, instruction to parse file for objects,
2857: # ref to hash for embedded objects,
2858: # ref to hash for codebase of java objects.
2859: # reference to scalar to accommodate mime type determined
2860: # from File::MMagic if $parser = parse.
2861: #
2862: # output: url to file (if action was uploaddoc),
2863: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2864: #
2865: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2866: # course.
2867: #
2868: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2869: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2870: # course's home server.
2871: #
2872: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2873: # be copied from $source (current location) to
2874: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2875: # and will then be copied to
2876: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2877: # course's home server.
2878: #
2879: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2880: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2881: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2882: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2883: # in course's home server.
2884: #
2885:
2886: sub process_coursefile {
2887: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2888: $mimetype)=@_;
2889: my $fetchresult;
2890: my $home=&homeserver($docuname,$docudom);
2891: if ($action eq 'propagate') {
2892: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2893: $home);
2894: } else {
2895: my $fpath = '';
2896: my $fname = $file;
2897: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2898: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2899: my $filepath = &build_filepath($fpath);
2900: if ($action eq 'copy') {
2901: if ($source eq '') {
2902: $fetchresult = 'no source file';
2903: return $fetchresult;
2904: } else {
2905: my $destination = $filepath.'/'.$fname;
2906: rename($source,$destination);
2907: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2908: $home);
2909: }
2910: } elsif ($action eq 'uploaddoc') {
2911: open(my $fh,'>'.$filepath.'/'.$fname);
2912: print $fh $env{'form.'.$source};
2913: close($fh);
2914: if ($parser eq 'parse') {
2915: my $mm = new File::MMagic;
2916: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2917: if ($type eq 'text/html') {
2918: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2919: unless ($parse_result eq 'ok') {
2920: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2921: }
2922: }
2923: if (ref($mimetype)) {
2924: $$mimetype = $type;
2925: }
2926: }
2927: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2928: $home);
2929: if ($fetchresult eq 'ok') {
2930: return '/uploaded/'.$fpath.'/'.$fname;
2931: } else {
2932: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2933: ' to host '.$home.': '.$fetchresult);
2934: return '/adm/notfound.html';
2935: }
2936: }
2937: }
2938: unless ( $fetchresult eq 'ok') {
2939: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2940: ' to host '.$home.': '.$fetchresult);
2941: }
2942: return $fetchresult;
2943: }
2944:
2945: sub build_filepath {
2946: my ($fpath) = @_;
2947: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2948: unless ($fpath eq '') {
2949: my @parts=split('/',$fpath);
2950: foreach my $part (@parts) {
2951: $filepath.= '/'.$part;
2952: if ((-e $filepath)!=1) {
2953: mkdir($filepath,0777);
2954: }
2955: }
2956: }
2957: return $filepath;
2958: }
2959:
2960: sub store_edited_file {
2961: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2962: my $file = $primary_url;
2963: $file =~ s#^/uploaded/$docudom/$docuname/##;
2964: my $fpath = '';
2965: my $fname = $file;
2966: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2967: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2968: my $filepath = &build_filepath($fpath);
2969: open(my $fh,'>'.$filepath.'/'.$fname);
2970: print $fh $content;
2971: close($fh);
2972: my $home=&homeserver($docuname,$docudom);
2973: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2974: $home);
2975: if ($$fetchresult eq 'ok') {
2976: return '/uploaded/'.$fpath.'/'.$fname;
2977: } else {
2978: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2979: ' to host '.$home.': '.$$fetchresult);
2980: return '/adm/notfound.html';
2981: }
2982: }
2983:
2984: sub clean_filename {
2985: my ($fname,$args)=@_;
2986: # Replace Windows backslashes by forward slashes
2987: $fname=~s/\\/\//g;
2988: if (!$args->{'keep_path'}) {
2989: # Get rid of everything but the actual filename
2990: $fname=~s/^.*\/([^\/]+)$/$1/;
2991: }
2992: # Replace spaces by underscores
2993: $fname=~s/\s+/\_/g;
2994: # Replace all other weird characters by nothing
2995: $fname=~s{[^/\w\.\-]}{}g;
2996: # Replace all .\d. sequences with _\d. so they no longer look like version
2997: # numbers
2998: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2999: return $fname;
3000: }
3001: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3002: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3003: # image with the same aspect ratio as the original, but with dimensions which do
3004: # not exceed $resizewidth and $resizeheight.
3005:
3006: sub resizeImage {
3007: my ($img_path,$resizewidth,$resizeheight) = @_;
3008: my $ima = Image::Magick->new;
3009: my $resized;
3010: if (-e $img_path) {
3011: $ima->Read($img_path);
3012: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3013: my $width = $ima->Get('width');
3014: my $height = $ima->Get('height');
3015: if ($width > $resizewidth) {
3016: my $factor = $width/$resizewidth;
3017: my $newheight = $height/$factor;
3018: $ima->Scale(width=>$resizewidth,height=>$newheight);
3019: $resized = 1;
3020: }
3021: }
3022: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3023: my $width = $ima->Get('width');
3024: my $height = $ima->Get('height');
3025: if ($height > $resizeheight) {
3026: my $factor = $height/$resizeheight;
3027: my $newwidth = $width/$factor;
3028: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3029: $resized = 1;
3030: }
3031: }
3032: if ($resized) {
3033: $ima->Write($img_path);
3034: }
3035: }
3036: return;
3037: }
3038:
3039: # --------------- Take an uploaded file and put it into the userfiles directory
3040: # input: $formname - the contents of the file are in $env{"form.$formname"}
3041: # the desired filename is in $env{"form.$formname.filename"}
3042: # $context - possible values: coursedoc, existingfile, overwrite,
3043: # canceloverwrite, or ''.
3044: # if 'coursedoc': upload to the current course
3045: # if 'existingfile': write file to tmp/overwrites directory
3046: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3047: # $context is passed as argument to &finishuserfileupload
3048: # $subdir - directory in userfile to store the file into
3049: # $parser - instruction to parse file for objects ($parser = parse)
3050: # $allfiles - reference to hash for embedded objects
3051: # $codebase - reference to hash for codebase of java objects
3052: # $desuname - username for permanent storage of uploaded file
3053: # $dsetudom - domain for permanaent storage of uploaded file
3054: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3055: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3056: # $resizewidth - width (pixels) to which to resize uploaded image
3057: # $resizeheight - height (pixels) to which to resize uploaded image
3058: # $mimetype - reference to scalar to accommodate mime type determined
3059: # from File::MMagic.
3060: #
3061: # output: url of file in userspace, or error: <message>
3062: # or /adm/notfound.html if failure to upload occurse
3063:
3064: sub userfileupload {
3065: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3066: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3067: if (!defined($subdir)) { $subdir='unknown'; }
3068: my $fname=$env{'form.'.$formname.'.filename'};
3069: $fname=&clean_filename($fname);
3070: # See if there is anything left
3071: unless ($fname) { return 'error: no uploaded file'; }
3072: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3073: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3074: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3075: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3076: my $now = time;
3077: my $filepath;
3078: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3079: $filepath = 'tmp/helprequests/'.$now;
3080: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3081: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3082: '_'.$env{'user.domain'}.'/pending';
3083: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3084: my ($docuname,$docudom);
3085: if ($destudom) {
3086: $docudom = $destudom;
3087: } else {
3088: $docudom = $env{'user.domain'};
3089: }
3090: if ($destuname) {
3091: $docuname = $destuname;
3092: } else {
3093: $docuname = $env{'user.name'};
3094: }
3095: if (exists($env{'form.group'})) {
3096: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3097: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3098: }
3099: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3100: if ($context eq 'canceloverwrite') {
3101: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3102: if (-e $tempfile) {
3103: my @info = stat($tempfile);
3104: if ($info[9] eq $env{'form.timestamp'}) {
3105: unlink($tempfile);
3106: }
3107: }
3108: return;
3109: }
3110: }
3111: # Create the directory if not present
3112: my @parts=split(/\//,$filepath);
3113: my $fullpath = $perlvar{'lonDaemons'};
3114: for (my $i=0;$i<@parts;$i++) {
3115: $fullpath .= '/'.$parts[$i];
3116: if ((-e $fullpath)!=1) {
3117: mkdir($fullpath,0777);
3118: }
3119: }
3120: open(my $fh,'>'.$fullpath.'/'.$fname);
3121: print $fh $env{'form.'.$formname};
3122: close($fh);
3123: if ($context eq 'existingfile') {
3124: my @info = stat($fullpath.'/'.$fname);
3125: return ($fullpath.'/'.$fname,$info[9]);
3126: } else {
3127: return $fullpath.'/'.$fname;
3128: }
3129: }
3130: if ($subdir eq 'scantron') {
3131: $fname = 'scantron_orig_'.$fname;
3132: } else {
3133: $fname="$subdir/$fname";
3134: }
3135: if ($context eq 'coursedoc') {
3136: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3137: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3138: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3139: return &finishuserfileupload($docuname,$docudom,
3140: $formname,$fname,$parser,$allfiles,
3141: $codebase,$thumbwidth,$thumbheight,
3142: $resizewidth,$resizeheight,$context,$mimetype);
3143: } else {
3144: $fname=$env{'form.folder'}.'/'.$fname;
3145: return &process_coursefile('uploaddoc',$docuname,$docudom,
3146: $fname,$formname,$parser,
3147: $allfiles,$codebase,$mimetype);
3148: }
3149: } elsif (defined($destuname)) {
3150: my $docuname=$destuname;
3151: my $docudom=$destudom;
3152: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3153: $parser,$allfiles,$codebase,
3154: $thumbwidth,$thumbheight,
3155: $resizewidth,$resizeheight,$context,$mimetype);
3156: } else {
3157: my $docuname=$env{'user.name'};
3158: my $docudom=$env{'user.domain'};
3159: if (exists($env{'form.group'})) {
3160: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3161: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3162: }
3163: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3164: $parser,$allfiles,$codebase,
3165: $thumbwidth,$thumbheight,
3166: $resizewidth,$resizeheight,$context,$mimetype);
3167: }
3168: }
3169:
3170: sub finishuserfileupload {
3171: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3172: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3173: my $path=$docudom.'/'.$docuname.'/';
3174: my $filepath=$perlvar{'lonDocRoot'};
3175:
3176: my ($fnamepath,$file,$fetchthumb);
3177: $file=$fname;
3178: if ($fname=~m|/|) {
3179: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3180: $path.=$fnamepath.'/';
3181: }
3182: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3183: my $count;
3184: for ($count=4;$count<=$#parts;$count++) {
3185: $filepath.="/$parts[$count]";
3186: if ((-e $filepath)!=1) {
3187: mkdir($filepath,0777);
3188: }
3189: }
3190:
3191: # Save the file
3192: {
3193: if (!open(FH,'>'.$filepath.'/'.$file)) {
3194: &logthis('Failed to create '.$filepath.'/'.$file);
3195: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3196: return '/adm/notfound.html';
3197: }
3198: if ($context eq 'overwrite') {
3199: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3200: my $target = $filepath.'/'.$file;
3201: if (-e $source) {
3202: my @info = stat($source);
3203: if ($info[9] eq $env{'form.timestamp'}) {
3204: unless (&File::Copy::move($source,$target)) {
3205: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3206: return "Moving from $source failed";
3207: }
3208: } else {
3209: return "Temporary file: $source had unexpected date/time for last modification";
3210: }
3211: } else {
3212: return "Temporary file: $source missing";
3213: }
3214: } elsif (!print FH ($env{'form.'.$formname})) {
3215: &logthis('Failed to write to '.$filepath.'/'.$file);
3216: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3217: return '/adm/notfound.html';
3218: }
3219: close(FH);
3220: if ($resizewidth && $resizeheight) {
3221: my $mm = new File::MMagic;
3222: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3223: if ($mime_type =~ m{^image/}) {
3224: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3225: }
3226: }
3227: }
3228: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3229: if (ref($mimetype)) {
3230: if ($$mimetype eq '') {
3231: my $mm = new File::MMagic;
3232: my $type = $mm->checktype_filename($filepath.'/'.$file);
3233: $$mimetype = $type;
3234: }
3235: }
3236: }
3237: if ($parser eq 'parse') {
3238: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3239: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3240: $allfiles,$codebase);
3241: unless ($parse_result eq 'ok') {
3242: &logthis('Failed to parse '.$filepath.$file.
3243: ' for embedded media: '.$parse_result);
3244: }
3245: }
3246: }
3247: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3248: my $input = $filepath.'/'.$file;
3249: my $output = $filepath.'/'.'tn-'.$file;
3250: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3251: system("convert -sample $thumbsize $input $output");
3252: if (-e $filepath.'/'.'tn-'.$file) {
3253: $fetchthumb = 1;
3254: }
3255: }
3256:
3257: # Notify homeserver to grep it
3258: #
3259: my $docuhome=&homeserver($docuname,$docudom);
3260: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3261: if ($fetchresult eq 'ok') {
3262: if ($fetchthumb) {
3263: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3264: if ($thumbresult ne 'ok') {
3265: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3266: $docuhome.': '.$thumbresult);
3267: }
3268: }
3269: #
3270: # Return the URL to it
3271: return '/uploaded/'.$path.$file;
3272: } else {
3273: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3274: ': '.$fetchresult);
3275: return '/adm/notfound.html';
3276: }
3277: }
3278:
3279: sub extract_embedded_items {
3280: my ($fullpath,$allfiles,$codebase,$content) = @_;
3281: my @state = ();
3282: my (%lastids,%related,%shockwave,%flashvars);
3283: my %javafiles = (
3284: codebase => '',
3285: code => '',
3286: archive => ''
3287: );
3288: my %mediafiles = (
3289: src => '',
3290: movie => '',
3291: );
3292: my $p;
3293: if ($content) {
3294: $p = HTML::LCParser->new($content);
3295: } else {
3296: $p = HTML::LCParser->new($fullpath);
3297: }
3298: while (my $t=$p->get_token()) {
3299: if ($t->[0] eq 'S') {
3300: my ($tagname, $attr) = ($t->[1],$t->[2]);
3301: push(@state, $tagname);
3302: if (lc($tagname) eq 'allow') {
3303: &add_filetype($allfiles,$attr->{'src'},'src');
3304: }
3305: if (lc($tagname) eq 'img') {
3306: &add_filetype($allfiles,$attr->{'src'},'src');
3307: }
3308: if (lc($tagname) eq 'a') {
3309: &add_filetype($allfiles,$attr->{'href'},'href');
3310: }
3311: if (lc($tagname) eq 'script') {
3312: my $src;
3313: if ($attr->{'archive'} =~ /\.jar$/i) {
3314: &add_filetype($allfiles,$attr->{'archive'},'archive');
3315: } else {
3316: if ($attr->{'src'} ne '') {
3317: $src = $attr->{'src'};
3318: &add_filetype($allfiles,$src,'src');
3319: }
3320: }
3321: my $text = $p->get_trimmed_text();
3322: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3323: my @swfargs = split(/,/,$1);
3324: foreach my $item (@swfargs) {
3325: $item =~ s/["']//g;
3326: $item =~ s/^\s+//;
3327: $item =~ s/\s+$//;
3328: }
3329: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3330: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3331: push(@{$related{$swfargs[0]}},$swfargs[2]);
3332: } else {
3333: $related{$swfargs[0]} = [$swfargs[2]];
3334: }
3335: }
3336: }
3337: }
3338: if (lc($tagname) eq 'link') {
3339: if (lc($attr->{'rel'}) eq 'stylesheet') {
3340: &add_filetype($allfiles,$attr->{'href'},'href');
3341: }
3342: }
3343: if (lc($tagname) eq 'object' ||
3344: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3345: foreach my $item (keys(%javafiles)) {
3346: $javafiles{$item} = '';
3347: }
3348: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3349: $lastids{lc($tagname)} = $attr->{'id'};
3350: }
3351: }
3352: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3353: my $name = lc($attr->{'name'});
3354: foreach my $item (keys(%javafiles)) {
3355: if ($name eq $item) {
3356: $javafiles{$item} = $attr->{'value'};
3357: last;
3358: }
3359: }
3360: my $pathfrom;
3361: foreach my $item (keys(%mediafiles)) {
3362: if ($name eq $item) {
3363: $pathfrom = $attr->{'value'};
3364: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3365: &add_filetype($allfiles,$pathfrom,$name);
3366: last;
3367: }
3368: }
3369: if ($name eq 'flashvars') {
3370: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3371: }
3372: if ($pathfrom ne '') {
3373: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3374: $pathfrom);
3375: }
3376: }
3377: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3378: foreach my $item (keys(%javafiles)) {
3379: if ($attr->{$item}) {
3380: $javafiles{$item} = $attr->{$item};
3381: last;
3382: }
3383: }
3384: foreach my $item (keys(%mediafiles)) {
3385: if ($attr->{$item}) {
3386: &add_filetype($allfiles,$attr->{$item},$item);
3387: last;
3388: }
3389: }
3390: if (lc($tagname) eq 'embed') {
3391: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3392: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3393: $attr->{'src'});
3394: }
3395: }
3396: }
3397: if ($t->[4] =~ m{/>$}) {
3398: pop(@state);
3399: }
3400: } elsif ($t->[0] eq 'E') {
3401: my ($tagname) = ($t->[1]);
3402: if ($javafiles{'codebase'} ne '') {
3403: $javafiles{'codebase'} .= '/';
3404: }
3405: if (lc($tagname) eq 'applet' ||
3406: lc($tagname) eq 'object' ||
3407: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3408: ) {
3409: foreach my $item (keys(%javafiles)) {
3410: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3411: my $file=$javafiles{'codebase'}.$javafiles{$item};
3412: &add_filetype($allfiles,$file,$item);
3413: }
3414: }
3415: }
3416: pop @state;
3417: }
3418: }
3419: foreach my $id (sort(keys(%flashvars))) {
3420: if ($shockwave{$id} ne '') {
3421: my @pairs = split(/\&/,$flashvars{$id});
3422: foreach my $pair (@pairs) {
3423: my ($key,$value) = split(/\=/,$pair);
3424: if ($key eq 'thumb') {
3425: &add_filetype($allfiles,$value,$key);
3426: } elsif ($key eq 'content') {
3427: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3428: my ($ext) = ($value =~ /\.([^.]+)$/);
3429: if ($ext ne '') {
3430: &add_filetype($allfiles,$path.$value,$ext);
3431: }
3432: }
3433: }
3434: }
3435: }
3436: return 'ok';
3437: }
3438:
3439: sub add_filetype {
3440: my ($allfiles,$file,$type)=@_;
3441: if (exists($allfiles->{$file})) {
3442: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3443: push(@{$allfiles->{$file}}, &escape($type));
3444: }
3445: } else {
3446: @{$allfiles->{$file}} = (&escape($type));
3447: }
3448: }
3449:
3450: sub embedded_dependency {
3451: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3452: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3453: if (($identifier ne '') &&
3454: (ref($related->{$identifier}) eq 'ARRAY') &&
3455: ($pathfrom ne '')) {
3456: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3457: foreach my $dep (@{$related->{$identifier}}) {
3458: &add_filetype($allfiles,$path.$dep,'object');
3459: }
3460: }
3461: }
3462: return;
3463: }
3464:
3465: sub removeuploadedurl {
3466: my ($url)=@_;
3467: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3468: return &removeuserfile($uname,$udom,$fname);
3469: }
3470:
3471: sub removeuserfile {
3472: my ($docuname,$docudom,$fname)=@_;
3473: my $home=&homeserver($docuname,$docudom);
3474: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3475: if ($result eq 'ok') {
3476: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3477: my $metafile = $fname.'.meta';
3478: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3479: my $url = "/uploaded/$docudom/$docuname/$fname";
3480: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3481: my $sqlresult =
3482: &update_portfolio_table($docuname,$docudom,$file,
3483: 'portfolio_metadata',$group,
3484: 'delete');
3485: }
3486: }
3487: return $result;
3488: }
3489:
3490: sub mkdiruserfile {
3491: my ($docuname,$docudom,$dir)=@_;
3492: my $home=&homeserver($docuname,$docudom);
3493: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3494: }
3495:
3496: sub renameuserfile {
3497: my ($docuname,$docudom,$old,$new)=@_;
3498: my $home=&homeserver($docuname,$docudom);
3499: my $result = &reply("renameuserfile:$docudom:$docuname:".
3500: &escape("$old").':'.&escape("$new"),$home);
3501: if ($result eq 'ok') {
3502: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3503: my $oldmeta = $old.'.meta';
3504: my $newmeta = $new.'.meta';
3505: my $metaresult =
3506: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3507: my $url = "/uploaded/$docudom/$docuname/$old";
3508: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3509: my $sqlresult =
3510: &update_portfolio_table($docuname,$docudom,$file,
3511: 'portfolio_metadata',$group,
3512: 'delete');
3513: }
3514: }
3515: return $result;
3516: }
3517:
3518: # ------------------------------------------------------------------------- Log
3519:
3520: sub log {
3521: my ($dom,$nam,$hom,$what)=@_;
3522: return critical("log:$dom:$nam:$what",$hom);
3523: }
3524:
3525: # ------------------------------------------------------------------ Course Log
3526: #
3527: # This routine flushes several buffers of non-mission-critical nature
3528: #
3529:
3530: sub flushcourselogs {
3531: &logthis('Flushing log buffers');
3532: #
3533: # course logs
3534: # This is a log of all transactions in a course, which can be used
3535: # for data mining purposes
3536: #
3537: # It also collects the courseid database, which lists last transaction
3538: # times and course titles for all courseids
3539: #
3540: my %courseidbuffer=();
3541: foreach my $crsid (keys(%courselogs)) {
3542: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3543: &escape($courselogs{$crsid}),
3544: $coursehombuf{$crsid}) eq 'ok') {
3545: delete $courselogs{$crsid};
3546: } else {
3547: &logthis('Failed to flush log buffer for '.$crsid);
3548: if (length($courselogs{$crsid})>40000) {
3549: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3550: " exceeded maximum size, deleting.</font>");
3551: delete $courselogs{$crsid};
3552: }
3553: }
3554: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3555: 'description' => $coursedescrbuf{$crsid},
3556: 'inst_code' => $courseinstcodebuf{$crsid},
3557: 'type' => $coursetypebuf{$crsid},
3558: 'owner' => $courseownerbuf{$crsid},
3559: };
3560: }
3561: #
3562: # Write course id database (reverse lookup) to homeserver of courses
3563: # Is used in pickcourse
3564: #
3565: foreach my $crs_home (keys(%courseidbuffer)) {
3566: my $response = &courseidput(&host_domain($crs_home),
3567: $courseidbuffer{$crs_home},
3568: $crs_home,'timeonly');
3569: }
3570: #
3571: # File accesses
3572: # Writes to the dynamic metadata of resources to get hit counts, etc.
3573: #
3574: foreach my $entry (keys(%accesshash)) {
3575: if ($entry =~ /___count$/) {
3576: my ($dom,$name);
3577: ($dom,$name,undef)=
3578: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3579: if (! defined($dom) || $dom eq '' ||
3580: ! defined($name) || $name eq '') {
3581: my $cid = $env{'request.course.id'};
3582: $dom = $env{'request.'.$cid.'.domain'};
3583: $name = $env{'request.'.$cid.'.num'};
3584: }
3585: my $value = $accesshash{$entry};
3586: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3587: my %temphash=($url => $value);
3588: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3589: if ($result eq 'ok') {
3590: delete $accesshash{$entry};
3591: }
3592: } else {
3593: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3594: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3595: my %temphash=($entry => $accesshash{$entry});
3596: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3597: delete $accesshash{$entry};
3598: }
3599: }
3600: }
3601: #
3602: # Roles
3603: # Reverse lookup of user roles for course faculty/staff and co-authorship
3604: #
3605: foreach my $entry (keys(%userrolehash)) {
3606: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3607: split(/\:/,$entry);
3608: if (&Apache::lonnet::put('nohist_userroles',
3609: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3610: $rudom,$runame) eq 'ok') {
3611: delete $userrolehash{$entry};
3612: }
3613: }
3614: #
3615: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3616: #
3617: my %domrolebuffer = ();
3618: foreach my $entry (keys(%domainrolehash)) {
3619: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3620: if ($domrolebuffer{$rudom}) {
3621: $domrolebuffer{$rudom}.='&'.&escape($entry).
3622: '='.&escape($domainrolehash{$entry});
3623: } else {
3624: $domrolebuffer{$rudom}.=&escape($entry).
3625: '='.&escape($domainrolehash{$entry});
3626: }
3627: delete $domainrolehash{$entry};
3628: }
3629: foreach my $dom (keys(%domrolebuffer)) {
3630: my %servers = &get_servers($dom,'library');
3631: foreach my $tryserver (keys(%servers)) {
3632: unless (&reply('domroleput:'.$dom.':'.
3633: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3634: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3635: }
3636: }
3637: }
3638: $dumpcount++;
3639: }
3640:
3641: sub courselog {
3642: my $what=shift;
3643: $what=time.':'.$what;
3644: unless ($env{'request.course.id'}) { return ''; }
3645: $coursedombuf{$env{'request.course.id'}}=
3646: $env{'course.'.$env{'request.course.id'}.'.domain'};
3647: $coursenumbuf{$env{'request.course.id'}}=
3648: $env{'course.'.$env{'request.course.id'}.'.num'};
3649: $coursehombuf{$env{'request.course.id'}}=
3650: $env{'course.'.$env{'request.course.id'}.'.home'};
3651: $coursedescrbuf{$env{'request.course.id'}}=
3652: $env{'course.'.$env{'request.course.id'}.'.description'};
3653: $courseinstcodebuf{$env{'request.course.id'}}=
3654: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3655: $courseownerbuf{$env{'request.course.id'}}=
3656: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3657: $coursetypebuf{$env{'request.course.id'}}=
3658: $env{'course.'.$env{'request.course.id'}.'.type'};
3659: if (defined $courselogs{$env{'request.course.id'}}) {
3660: $courselogs{$env{'request.course.id'}}.='&'.$what;
3661: } else {
3662: $courselogs{$env{'request.course.id'}}.=$what;
3663: }
3664: if (length($courselogs{$env{'request.course.id'}})>4048) {
3665: &flushcourselogs();
3666: }
3667: }
3668:
3669: sub courseacclog {
3670: my $fnsymb=shift;
3671: unless ($env{'request.course.id'}) { return ''; }
3672: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3673: if ($fnsymb=~/$LONCAPA::assess_re/) {
3674: $what.=':POST';
3675: # FIXME: Probably ought to escape things....
3676: foreach my $key (keys(%env)) {
3677: if ($key=~/^form\.(.*)/) {
3678: my $formitem = $1;
3679: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3680: $what.=':'.$formitem.'='.$env{$key};
3681: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3682: $what.=':'.$formitem.'='.$env{$key};
3683: }
3684: }
3685: }
3686: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3687: # FIXME: We should not be depending on a form parameter that someone
3688: # editing lonsearchcat.pm might change in the future.
3689: if ($env{'form.phase'} eq 'course_search') {
3690: $what.= ':POST';
3691: # FIXME: Probably ought to escape things....
3692: foreach my $element ('courseexp','crsfulltext','crsrelated',
3693: 'crsdiscuss') {
3694: $what.=':'.$element.'='.$env{'form.'.$element};
3695: }
3696: }
3697: }
3698: &courselog($what);
3699: }
3700:
3701: sub countacc {
3702: my $url=&declutter(shift);
3703: return if (! defined($url) || $url eq '');
3704: unless ($env{'request.course.id'}) { return ''; }
3705: #
3706: # Mark that this url was used in this course
3707: #
3708: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3709: #
3710: # Increase the access count for this resource in this child process
3711: #
3712: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3713: $accesshash{$key}++;
3714: }
3715:
3716: sub linklog {
3717: my ($from,$to)=@_;
3718: $from=&declutter($from);
3719: $to=&declutter($to);
3720: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3721: $accesshash{$to.'___'.$from.'___goto'}=1;
3722: }
3723:
3724: sub statslog {
3725: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3726: if ($users<2) { return; }
3727: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3728: 'course' => $env{'request.course.id'},
3729: 'sections' => '"all"',
3730: 'num_students' => $users,
3731: 'part' => $part,
3732: 'symb' => $symb,
3733: 'mean_tries' => $av_attempts,
3734: 'deg_of_diff' => $degdiff});
3735: foreach my $key (keys(%dynstore)) {
3736: $accesshash{$key}=$dynstore{$key};
3737: }
3738: }
3739:
3740: sub userrolelog {
3741: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3742: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3743: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3744: $userrolehash
3745: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3746: =$tend.':'.$tstart;
3747: }
3748: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3749: $userrolehash
3750: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3751: =$tend.':'.$tstart;
3752: }
3753: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3754: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3755: $domainrolehash
3756: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3757: = $tend.':'.$tstart;
3758: }
3759: }
3760:
3761: sub courserolelog {
3762: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3763: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3764: my $cdom = $1;
3765: my $cnum = $2;
3766: my $sec = $3;
3767: my $namespace = 'rolelog';
3768: my %storehash = (
3769: role => $trole,
3770: start => $tstart,
3771: end => $tend,
3772: selfenroll => $selfenroll,
3773: context => $context,
3774: );
3775: if ($trole eq 'gr') {
3776: $namespace = 'groupslog';
3777: $storehash{'group'} = $sec;
3778: } else {
3779: $storehash{'section'} = $sec;
3780: }
3781: &write_log('course',$namespace,\%storehash,$delflag,$username,
3782: $domain,$cnum,$cdom);
3783: if (($trole ne 'st') || ($sec ne '')) {
3784: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3785: }
3786: }
3787: return;
3788: }
3789:
3790: sub domainrolelog {
3791: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3792: if ($area =~ m{^/($match_domain)/$}) {
3793: my $cdom = $1;
3794: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3795: my $namespace = 'rolelog';
3796: my %storehash = (
3797: role => $trole,
3798: start => $tstart,
3799: end => $tend,
3800: context => $context,
3801: );
3802: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3803: $domain,$domconfiguser,$cdom);
3804: }
3805: return;
3806:
3807: }
3808:
3809: sub coauthorrolelog {
3810: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3811: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3812: my $audom = $1;
3813: my $auname = $2;
3814: my $namespace = 'rolelog';
3815: my %storehash = (
3816: role => $trole,
3817: start => $tstart,
3818: end => $tend,
3819: context => $context,
3820: );
3821: &write_log('author',$namespace,\%storehash,$delflag,$username,
3822: $domain,$auname,$audom);
3823: }
3824: return;
3825: }
3826:
3827: sub get_course_adv_roles {
3828: my ($cid,$codes) = @_;
3829: $cid=$env{'request.course.id'} unless (defined($cid));
3830: my %coursehash=&coursedescription($cid);
3831: my $crstype = &Apache::loncommon::course_type($cid);
3832: my %nothide=();
3833: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3834: if ($user !~ /:/) {
3835: $nothide{join(':',split(/[\@]/,$user))}=1;
3836: } else {
3837: $nothide{$user}=1;
3838: }
3839: }
3840: my %returnhash=();
3841: my %dumphash=
3842: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3843: my $now=time;
3844: my %privileged;
3845: foreach my $entry (keys(%dumphash)) {
3846: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3847: if (($tstart) && ($tstart<0)) { next; }
3848: if (($tend) && ($tend<$now)) { next; }
3849: if (($tstart) && ($now<$tstart)) { next; }
3850: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3851: if ($username eq '' || $domain eq '') { next; }
3852: unless (ref($privileged{$domain}) eq 'HASH') {
3853: my %dompersonnel =
3854: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3855: $privileged{$domain} = {};
3856: foreach my $server (keys(%dompersonnel)) {
3857: if (ref($dompersonnel{$server}) eq 'HASH') {
3858: foreach my $user (keys(%{$dompersonnel{$server}})) {
3859: my ($trole,$uname,$udom) = split(/:/,$user);
3860: $privileged{$udom}{$uname} = 1;
3861: }
3862: }
3863: }
3864: }
3865: if ((exists($privileged{$domain}{$username})) &&
3866: (!$nothide{$username.':'.$domain})) { next; }
3867: if ($role eq 'cr') { next; }
3868: if ($codes) {
3869: if ($section) { $role .= ':'.$section; }
3870: if ($returnhash{$role}) {
3871: $returnhash{$role}.=','.$username.':'.$domain;
3872: } else {
3873: $returnhash{$role}=$username.':'.$domain;
3874: }
3875: } else {
3876: my $key=&plaintext($role,$crstype);
3877: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3878: if ($returnhash{$key}) {
3879: $returnhash{$key}.=','.$username.':'.$domain;
3880: } else {
3881: $returnhash{$key}=$username.':'.$domain;
3882: }
3883: }
3884: }
3885: return %returnhash;
3886: }
3887:
3888: sub get_my_roles {
3889: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3890: unless (defined($uname)) { $uname=$env{'user.name'}; }
3891: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3892: my (%dumphash,%nothide);
3893: if ($context eq 'userroles') {
3894: %dumphash = &dump('roles',$udom,$uname);
3895: } else {
3896: %dumphash=
3897: &dump('nohist_userroles',$udom,$uname);
3898: if ($hidepriv) {
3899: my %coursehash=&coursedescription($udom.'_'.$uname);
3900: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3901: if ($user !~ /:/) {
3902: $nothide{join(':',split(/[\@]/,$user))} = 1;
3903: } else {
3904: $nothide{$user} = 1;
3905: }
3906: }
3907: }
3908: }
3909: my %returnhash=();
3910: my $now=time;
3911: my %privileged;
3912: foreach my $entry (keys(%dumphash)) {
3913: my ($role,$tend,$tstart);
3914: if ($context eq 'userroles') {
3915: next if ($entry =~ /^rolesdef/);
3916: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3917: } else {
3918: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3919: }
3920: if (($tstart) && ($tstart<0)) { next; }
3921: my $status = 'active';
3922: if (($tend) && ($tend<=$now)) {
3923: $status = 'previous';
3924: }
3925: if (($tstart) && ($now<$tstart)) {
3926: $status = 'future';
3927: }
3928: if (ref($types) eq 'ARRAY') {
3929: if (!grep(/^\Q$status\E$/,@{$types})) {
3930: next;
3931: }
3932: } else {
3933: if ($status ne 'active') {
3934: next;
3935: }
3936: }
3937: my ($rolecode,$username,$domain,$section,$area);
3938: if ($context eq 'userroles') {
3939: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
3940: (undef,$domain,$username,$section) = split(/\//,$area);
3941: } else {
3942: ($role,$username,$domain,$section) = split(/\:/,$entry);
3943: }
3944: if (ref($roledoms) eq 'ARRAY') {
3945: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3946: next;
3947: }
3948: }
3949: if (ref($roles) eq 'ARRAY') {
3950: if (!grep(/^\Q$role\E$/,@{$roles})) {
3951: if ($role =~ /^cr\//) {
3952: if (!grep(/^cr$/,@{$roles})) {
3953: next;
3954: }
3955: } elsif ($role =~ /^gr\//) {
3956: if (!grep(/^gr$/,@{$roles})) {
3957: next;
3958: }
3959: } else {
3960: next;
3961: }
3962: }
3963: }
3964: if ($hidepriv) {
3965: if ($context eq 'userroles') {
3966: if ((&privileged($username,$domain)) &&
3967: (!$nothide{$username.':'.$domain})) {
3968: next;
3969: }
3970: } else {
3971: unless (ref($privileged{$domain}) eq 'HASH') {
3972: my %dompersonnel =
3973: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3974: $privileged{$domain} = {};
3975: if (keys(%dompersonnel)) {
3976: foreach my $server (keys(%dompersonnel)) {
3977: if (ref($dompersonnel{$server}) eq 'HASH') {
3978: foreach my $user (keys(%{$dompersonnel{$server}})) {
3979: my ($trole,$uname,$udom) = split(/:/,$user);
3980: $privileged{$udom}{$uname} = $trole;
3981: }
3982: }
3983: }
3984: }
3985: }
3986: if (exists($privileged{$domain}{$username})) {
3987: if (!$nothide{$username.':'.$domain}) {
3988: next;
3989: }
3990: }
3991: }
3992: }
3993: if ($withsec) {
3994: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3995: $tstart.':'.$tend;
3996: } else {
3997: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3998: }
3999: }
4000: return %returnhash;
4001: }
4002:
4003: # ----------------------------------------------------- Frontpage Announcements
4004: #
4005: #
4006:
4007: sub postannounce {
4008: my ($server,$text)=@_;
4009: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4010: unless ($text=~/\w/) { $text=''; }
4011: return &reply('setannounce:'.&escape($text),$server);
4012: }
4013:
4014: sub getannounce {
4015:
4016: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4017: my $announcement='';
4018: while (my $line = <$fh>) { $announcement .= $line; }
4019: close($fh);
4020: if ($announcement=~/\w/) {
4021: return
4022: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4023: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4024: } else {
4025: return '';
4026: }
4027: } else {
4028: return '';
4029: }
4030: }
4031:
4032: # ---------------------------------------------------------- Course ID routines
4033: # Deal with domain's nohist_courseid.db files
4034: #
4035:
4036: sub courseidput {
4037: my ($domain,$storehash,$coursehome,$caller) = @_;
4038: return unless (ref($storehash) eq 'HASH');
4039: my $outcome;
4040: if ($caller eq 'timeonly') {
4041: my $cids = '';
4042: foreach my $item (keys(%$storehash)) {
4043: $cids.=&escape($item).'&';
4044: }
4045: $cids=~s/\&$//;
4046: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4047: $coursehome);
4048: } else {
4049: my $items = '';
4050: foreach my $item (keys(%$storehash)) {
4051: $items.= &escape($item).'='.
4052: &freeze_escape($$storehash{$item}).'&';
4053: }
4054: $items=~s/\&$//;
4055: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4056: $coursehome);
4057: }
4058: if ($outcome eq 'unknown_cmd') {
4059: my $what;
4060: foreach my $cid (keys(%$storehash)) {
4061: $what .= &escape($cid).'=';
4062: foreach my $item ('description','inst_code','owner','type') {
4063: $what .= &escape($storehash->{$cid}{$item}).':';
4064: }
4065: $what =~ s/\:$/&/;
4066: }
4067: $what =~ s/\&$//;
4068: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4069: } else {
4070: return $outcome;
4071: }
4072: }
4073:
4074: sub courseiddump {
4075: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4076: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4077: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4078: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4079: my $as_hash = 1;
4080: my %returnhash;
4081: if (!$domfilter) { $domfilter=''; }
4082: my %libserv = &all_library();
4083: foreach my $tryserver (keys(%libserv)) {
4084: if ( ( $hostidflag == 1
4085: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4086: || (!defined($hostidflag)) ) {
4087:
4088: if (($domfilter eq '') ||
4089: (&host_domain($tryserver) eq $domfilter)) {
4090: my $rep;
4091: if (grep { $_ eq $tryserver } current_machine_ids()) {
4092: $rep = LONCAPA::Lond::dump_course_id_handler(
4093: join(":", (&host_domain($tryserver), $sincefilter,
4094: &escape($descfilter), &escape($instcodefilter),
4095: &escape($ownerfilter), &escape($coursefilter),
4096: &escape($typefilter), &escape($regexp_ok),
4097: $as_hash, &escape($selfenrollonly),
4098: &escape($catfilter), $showhidden, $caller,
4099: &escape($cloner), &escape($cc_clone), $cloneonly,
4100: &escape($createdbefore), &escape($createdafter),
4101: &escape($creationcontext), $domcloner)));
4102: } else {
4103: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4104: $sincefilter.':'.&escape($descfilter).':'.
4105: &escape($instcodefilter).':'.&escape($ownerfilter).
4106: ':'.&escape($coursefilter).':'.&escape($typefilter).
4107: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4108: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4109: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4110: &escape($cc_clone).':'.$cloneonly.':'.
4111: &escape($createdbefore).':'.&escape($createdafter).':'.
4112: &escape($creationcontext).':'.$domcloner,
4113: $tryserver);
4114: }
4115:
4116: my @pairs=split(/\&/,$rep);
4117: foreach my $item (@pairs) {
4118: my ($key,$value)=split(/\=/,$item,2);
4119: $key = &unescape($key);
4120: next if ($key =~ /^error: 2 /);
4121: my $result = &thaw_unescape($value);
4122: if (ref($result) eq 'HASH') {
4123: $returnhash{$key}=$result;
4124: } else {
4125: my @responses = split(/:/,$value);
4126: my @items = ('description','inst_code','owner','type');
4127: for (my $i=0; $i<@responses; $i++) {
4128: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4129: }
4130: }
4131: }
4132: }
4133: }
4134: }
4135: return %returnhash;
4136: }
4137:
4138: sub courselastaccess {
4139: my ($cdom,$cnum,$hostidref) = @_;
4140: my %returnhash;
4141: if ($cdom && $cnum) {
4142: my $chome = &homeserver($cnum,$cdom);
4143: if ($chome ne 'no_host') {
4144: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4145: &extract_lastaccess(\%returnhash,$rep);
4146: }
4147: } else {
4148: if (!$cdom) { $cdom=''; }
4149: my %libserv = &all_library();
4150: foreach my $tryserver (keys(%libserv)) {
4151: if (ref($hostidref) eq 'ARRAY') {
4152: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4153: }
4154: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4155: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4156: &extract_lastaccess(\%returnhash,$rep);
4157: }
4158: }
4159: }
4160: return %returnhash;
4161: }
4162:
4163: sub extract_lastaccess {
4164: my ($returnhash,$rep) = @_;
4165: if (ref($returnhash) eq 'HASH') {
4166: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4167: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4168: $rep eq '') {
4169: my @pairs=split(/\&/,$rep);
4170: foreach my $item (@pairs) {
4171: my ($key,$value)=split(/\=/,$item,2);
4172: $key = &unescape($key);
4173: next if ($key =~ /^error: 2 /);
4174: $returnhash->{$key} = &thaw_unescape($value);
4175: }
4176: }
4177: }
4178: return;
4179: }
4180:
4181: # ---------------------------------------------------------- DC e-mail
4182:
4183: sub dcmailput {
4184: my ($domain,$msgid,$message,$server)=@_;
4185: my $status = &Apache::lonnet::critical(
4186: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4187: &escape($message),$server);
4188: return $status;
4189: }
4190:
4191: sub dcmaildump {
4192: my ($dom,$startdate,$enddate,$senders) = @_;
4193: my %returnhash=();
4194:
4195: if (defined(&domain($dom,'primary'))) {
4196: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4197: &escape($enddate).':';
4198: my @esc_senders=map { &escape($_)} @$senders;
4199: $cmd.=&escape(join('&',@esc_senders));
4200: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4201: my ($key,$value) = split(/\=/,$line,2);
4202: if (($key) && ($value)) {
4203: $returnhash{&unescape($key)} = &unescape($value);
4204: }
4205: }
4206: }
4207: return %returnhash;
4208: }
4209: # ---------------------------------------------------------- Domain roles
4210:
4211: sub get_domain_roles {
4212: my ($dom,$roles,$startdate,$enddate)=@_;
4213: if ((!defined($startdate)) || ($startdate eq '')) {
4214: $startdate = '.';
4215: }
4216: if ((!defined($enddate)) || ($enddate eq '')) {
4217: $enddate = '.';
4218: }
4219: my $rolelist;
4220: if (ref($roles) eq 'ARRAY') {
4221: $rolelist = join(':',@{$roles});
4222: }
4223: my %personnel = ();
4224:
4225: my %servers = &get_servers($dom,'library');
4226: foreach my $tryserver (keys(%servers)) {
4227: %{$personnel{$tryserver}}=();
4228: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4229: &escape($startdate).':'.
4230: &escape($enddate).':'.
4231: &escape($rolelist), $tryserver))) {
4232: my ($key,$value) = split(/\=/,$line,2);
4233: if (($key) && ($value)) {
4234: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4235: }
4236: }
4237: }
4238: return %personnel;
4239: }
4240:
4241: # ----------------------------------------------------------- Interval timing
4242:
4243: {
4244: # Caches needed for speedup of navmaps
4245: # We don't want to cache this for very long at all (5 seconds at most)
4246: #
4247: # The user for whom we cache
4248: my $cachedkey='';
4249: # The cached times for this user
4250: my %cachedtimes=();
4251: # When this was last done
4252: my $cachedtime=();
4253:
4254: sub load_all_first_access {
4255: my ($uname,$udom)=@_;
4256: if (($cachedkey eq $uname.':'.$udom) &&
4257: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4258: return;
4259: }
4260: $cachedtime=time;
4261: $cachedkey=$uname.':'.$udom;
4262: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4263: }
4264:
4265: sub get_first_access {
4266: my ($type,$argsymb,$argmap)=@_;
4267: my ($symb,$courseid,$udom,$uname)=&whichuser();
4268: if ($argsymb) { $symb=$argsymb; }
4269: my ($map,$id,$res)=&decode_symb($symb);
4270: if ($argmap) { $map = $argmap; }
4271: if ($type eq 'course') {
4272: $res='course';
4273: } elsif ($type eq 'map') {
4274: $res=&symbread($map);
4275: } else {
4276: $res=$symb;
4277: }
4278: &load_all_first_access($uname,$udom);
4279: return $cachedtimes{"$courseid\0$res"};
4280: }
4281:
4282: sub set_first_access {
4283: my ($type,$interval)=@_;
4284: my ($symb,$courseid,$udom,$uname)=&whichuser();
4285: my ($map,$id,$res)=&decode_symb($symb);
4286: if ($type eq 'course') {
4287: $res='course';
4288: } elsif ($type eq 'map') {
4289: $res=&symbread($map);
4290: } else {
4291: $res=$symb;
4292: }
4293: $cachedkey='';
4294: my $firstaccess=&get_first_access($type,$symb,$map);
4295: if (!$firstaccess) {
4296: my $start = time;
4297: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4298: $udom,$uname);
4299: if ($putres eq 'ok') {
4300: &put('timerinterval',{"$courseid\0$res"=>$interval},
4301: $udom,$uname);
4302: &appenv(
4303: {
4304: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4305: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4306: }
4307: );
4308: }
4309: return $putres;
4310: }
4311: return 'already_set';
4312: }
4313: }
4314: # --------------------------------------------- Set Expire Date for Spreadsheet
4315:
4316: sub expirespread {
4317: my ($uname,$udom,$stype,$usymb)=@_;
4318: my $cid=$env{'request.course.id'};
4319: if ($cid) {
4320: my $now=time;
4321: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4322: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4323: $env{'course.'.$cid.'.num'}.
4324: ':nohist_expirationdates:'.
4325: &escape($key).'='.$now,
4326: $env{'course.'.$cid.'.home'})
4327: }
4328: return 'ok';
4329: }
4330:
4331: # ----------------------------------------------------- Devalidate Spreadsheets
4332:
4333: sub devalidate {
4334: my ($symb,$uname,$udom)=@_;
4335: my $cid=$env{'request.course.id'};
4336: if ($cid) {
4337: # delete the stored spreadsheets for
4338: # - the student level sheet of this user in course's homespace
4339: # - the assessment level sheet for this resource
4340: # for this user in user's homespace
4341: # - current conditional state info
4342: my $key=$uname.':'.$udom.':';
4343: my $status=
4344: &del('nohist_calculatedsheets',
4345: [$key.'studentcalc:'],
4346: $env{'course.'.$cid.'.domain'},
4347: $env{'course.'.$cid.'.num'})
4348: .' '.
4349: &del('nohist_calculatedsheets_'.$cid,
4350: [$key.'assesscalc:'.$symb],$udom,$uname);
4351: unless ($status eq 'ok ok') {
4352: &logthis('Could not devalidate spreadsheet '.
4353: $uname.' at '.$udom.' for '.
4354: $symb.': '.$status);
4355: }
4356: &delenv('user.state.'.$cid);
4357: }
4358: }
4359:
4360: sub get_scalar {
4361: my ($string,$end) = @_;
4362: my $value;
4363: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4364: $value = $1;
4365: } elsif ($$string =~ s/^([^&]*?)&//) {
4366: $value = $1;
4367: }
4368: return &unescape($value);
4369: }
4370:
4371: sub array2str {
4372: my (@array) = @_;
4373: my $result=&arrayref2str(\@array);
4374: $result=~s/^__ARRAY_REF__//;
4375: $result=~s/__END_ARRAY_REF__$//;
4376: return $result;
4377: }
4378:
4379: sub arrayref2str {
4380: my ($arrayref) = @_;
4381: my $result='__ARRAY_REF__';
4382: foreach my $elem (@$arrayref) {
4383: if(ref($elem) eq 'ARRAY') {
4384: $result.=&arrayref2str($elem).'&';
4385: } elsif(ref($elem) eq 'HASH') {
4386: $result.=&hashref2str($elem).'&';
4387: } elsif(ref($elem)) {
4388: #print("Got a ref of ".(ref($elem))." skipping.");
4389: } else {
4390: $result.=&escape($elem).'&';
4391: }
4392: }
4393: $result=~s/\&$//;
4394: $result .= '__END_ARRAY_REF__';
4395: return $result;
4396: }
4397:
4398: sub hash2str {
4399: my (%hash) = @_;
4400: my $result=&hashref2str(\%hash);
4401: $result=~s/^__HASH_REF__//;
4402: $result=~s/__END_HASH_REF__$//;
4403: return $result;
4404: }
4405:
4406: sub hashref2str {
4407: my ($hashref)=@_;
4408: my $result='__HASH_REF__';
4409: foreach my $key (sort(keys(%$hashref))) {
4410: if (ref($key) eq 'ARRAY') {
4411: $result.=&arrayref2str($key).'=';
4412: } elsif (ref($key) eq 'HASH') {
4413: $result.=&hashref2str($key).'=';
4414: } elsif (ref($key)) {
4415: $result.='=';
4416: #print("Got a ref of ".(ref($key))." skipping.");
4417: } else {
4418: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4419: }
4420:
4421: if(ref($hashref->{$key}) eq 'ARRAY') {
4422: $result.=&arrayref2str($hashref->{$key}).'&';
4423: } elsif(ref($hashref->{$key}) eq 'HASH') {
4424: $result.=&hashref2str($hashref->{$key}).'&';
4425: } elsif(ref($hashref->{$key})) {
4426: $result.='&';
4427: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4428: } else {
4429: $result.=&escape($hashref->{$key}).'&';
4430: }
4431: }
4432: $result=~s/\&$//;
4433: $result .= '__END_HASH_REF__';
4434: return $result;
4435: }
4436:
4437: sub str2hash {
4438: my ($string)=@_;
4439: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4440: return %$hash;
4441: }
4442:
4443: sub str2hashref {
4444: my ($string) = @_;
4445:
4446: my %hash;
4447:
4448: if($string !~ /^__HASH_REF__/) {
4449: if (! ($string eq '' || !defined($string))) {
4450: $hash{'error'}='Not hash reference';
4451: }
4452: return (\%hash, $string);
4453: }
4454:
4455: $string =~ s/^__HASH_REF__//;
4456:
4457: while($string !~ /^__END_HASH_REF__/) {
4458: #key
4459: my $key='';
4460: if($string =~ /^__HASH_REF__/) {
4461: ($key, $string)=&str2hashref($string);
4462: if(defined($key->{'error'})) {
4463: $hash{'error'}='Bad data';
4464: return (\%hash, $string);
4465: }
4466: } elsif($string =~ /^__ARRAY_REF__/) {
4467: ($key, $string)=&str2arrayref($string);
4468: if($key->[0] eq 'Array reference error') {
4469: $hash{'error'}='Bad data';
4470: return (\%hash, $string);
4471: }
4472: } else {
4473: $string =~ s/^(.*?)=//;
4474: $key=&unescape($1);
4475: }
4476: $string =~ s/^=//;
4477:
4478: #value
4479: my $value='';
4480: if($string =~ /^__HASH_REF__/) {
4481: ($value, $string)=&str2hashref($string);
4482: if(defined($value->{'error'})) {
4483: $hash{'error'}='Bad data';
4484: return (\%hash, $string);
4485: }
4486: } elsif($string =~ /^__ARRAY_REF__/) {
4487: ($value, $string)=&str2arrayref($string);
4488: if($value->[0] eq 'Array reference error') {
4489: $hash{'error'}='Bad data';
4490: return (\%hash, $string);
4491: }
4492: } else {
4493: $value=&get_scalar(\$string,'__END_HASH_REF__');
4494: }
4495: $string =~ s/^&//;
4496:
4497: $hash{$key}=$value;
4498: }
4499:
4500: $string =~ s/^__END_HASH_REF__//;
4501:
4502: return (\%hash, $string);
4503: }
4504:
4505: sub str2array {
4506: my ($string)=@_;
4507: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4508: return @$array;
4509: }
4510:
4511: sub str2arrayref {
4512: my ($string) = @_;
4513: my @array;
4514:
4515: if($string !~ /^__ARRAY_REF__/) {
4516: if (! ($string eq '' || !defined($string))) {
4517: $array[0]='Array reference error';
4518: }
4519: return (\@array, $string);
4520: }
4521:
4522: $string =~ s/^__ARRAY_REF__//;
4523:
4524: while($string !~ /^__END_ARRAY_REF__/) {
4525: my $value='';
4526: if($string =~ /^__HASH_REF__/) {
4527: ($value, $string)=&str2hashref($string);
4528: if(defined($value->{'error'})) {
4529: $array[0] ='Array reference error';
4530: return (\@array, $string);
4531: }
4532: } elsif($string =~ /^__ARRAY_REF__/) {
4533: ($value, $string)=&str2arrayref($string);
4534: if($value->[0] eq 'Array reference error') {
4535: $array[0] ='Array reference error';
4536: return (\@array, $string);
4537: }
4538: } else {
4539: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4540: }
4541: $string =~ s/^&//;
4542:
4543: push(@array, $value);
4544: }
4545:
4546: $string =~ s/^__END_ARRAY_REF__//;
4547:
4548: return (\@array, $string);
4549: }
4550:
4551: # -------------------------------------------------------------------Temp Store
4552:
4553: sub tmpreset {
4554: my ($symb,$namespace,$domain,$stuname) = @_;
4555: if (!$symb) {
4556: $symb=&symbread();
4557: if (!$symb) { $symb= $env{'request.url'}; }
4558: }
4559: $symb=escape($symb);
4560:
4561: if (!$namespace) { $namespace=$env{'request.state'}; }
4562: $namespace=~s/\//\_/g;
4563: $namespace=~s/\W//g;
4564:
4565: if (!$domain) { $domain=$env{'user.domain'}; }
4566: if (!$stuname) { $stuname=$env{'user.name'}; }
4567: if ($domain eq 'public' && $stuname eq 'public') {
4568: $stuname=$ENV{'REMOTE_ADDR'};
4569: }
4570: my $path=LONCAPA::tempdir();
4571: my %hash;
4572: if (tie(%hash,'GDBM_File',
4573: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4574: &GDBM_WRCREAT(),0640)) {
4575: foreach my $key (keys(%hash)) {
4576: if ($key=~ /:$symb/) {
4577: delete($hash{$key});
4578: }
4579: }
4580: }
4581: }
4582:
4583: sub tmpstore {
4584: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4585:
4586: if (!$symb) {
4587: $symb=&symbread();
4588: if (!$symb) { $symb= $env{'request.url'}; }
4589: }
4590: $symb=escape($symb);
4591:
4592: if (!$namespace) {
4593: # I don't think we would ever want to store this for a course.
4594: # it seems this will only be used if we don't have a course.
4595: #$namespace=$env{'request.course.id'};
4596: #if (!$namespace) {
4597: $namespace=$env{'request.state'};
4598: #}
4599: }
4600: $namespace=~s/\//\_/g;
4601: $namespace=~s/\W//g;
4602: if (!$domain) { $domain=$env{'user.domain'}; }
4603: if (!$stuname) { $stuname=$env{'user.name'}; }
4604: if ($domain eq 'public' && $stuname eq 'public') {
4605: $stuname=$ENV{'REMOTE_ADDR'};
4606: }
4607: my $now=time;
4608: my %hash;
4609: my $path=LONCAPA::tempdir();
4610: if (tie(%hash,'GDBM_File',
4611: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4612: &GDBM_WRCREAT(),0640)) {
4613: $hash{"version:$symb"}++;
4614: my $version=$hash{"version:$symb"};
4615: my $allkeys='';
4616: foreach my $key (keys(%$storehash)) {
4617: $allkeys.=$key.':';
4618: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4619: }
4620: $hash{"$version:$symb:timestamp"}=$now;
4621: $allkeys.='timestamp';
4622: $hash{"$version:keys:$symb"}=$allkeys;
4623: if (untie(%hash)) {
4624: return 'ok';
4625: } else {
4626: return "error:$!";
4627: }
4628: } else {
4629: return "error:$!";
4630: }
4631: }
4632:
4633: # -----------------------------------------------------------------Temp Restore
4634:
4635: sub tmprestore {
4636: my ($symb,$namespace,$domain,$stuname) = @_;
4637:
4638: if (!$symb) {
4639: $symb=&symbread();
4640: if (!$symb) { $symb= $env{'request.url'}; }
4641: }
4642: $symb=escape($symb);
4643:
4644: if (!$namespace) { $namespace=$env{'request.state'}; }
4645:
4646: if (!$domain) { $domain=$env{'user.domain'}; }
4647: if (!$stuname) { $stuname=$env{'user.name'}; }
4648: if ($domain eq 'public' && $stuname eq 'public') {
4649: $stuname=$ENV{'REMOTE_ADDR'};
4650: }
4651: my %returnhash;
4652: $namespace=~s/\//\_/g;
4653: $namespace=~s/\W//g;
4654: my %hash;
4655: my $path=LONCAPA::tempdir();
4656: if (tie(%hash,'GDBM_File',
4657: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4658: &GDBM_READER(),0640)) {
4659: my $version=$hash{"version:$symb"};
4660: $returnhash{'version'}=$version;
4661: my $scope;
4662: for ($scope=1;$scope<=$version;$scope++) {
4663: my $vkeys=$hash{"$scope:keys:$symb"};
4664: my @keys=split(/:/,$vkeys);
4665: my $key;
4666: $returnhash{"$scope:keys"}=$vkeys;
4667: foreach $key (@keys) {
4668: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4669: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4670: }
4671: }
4672: if (!(untie(%hash))) {
4673: return "error:$!";
4674: }
4675: } else {
4676: return "error:$!";
4677: }
4678: return %returnhash;
4679: }
4680:
4681: # ----------------------------------------------------------------------- Store
4682:
4683: sub store {
4684: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4685: my $home='';
4686:
4687: if ($stuname) { $home=&homeserver($stuname,$domain); }
4688:
4689: $symb=&symbclean($symb);
4690: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4691:
4692: if (!$domain) { $domain=$env{'user.domain'}; }
4693: if (!$stuname) { $stuname=$env{'user.name'}; }
4694:
4695: &devalidate($symb,$stuname,$domain);
4696:
4697: $symb=escape($symb);
4698: if (!$namespace) {
4699: unless ($namespace=$env{'request.course.id'}) {
4700: return '';
4701: }
4702: }
4703: if (!$home) { $home=$env{'user.home'}; }
4704:
4705: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4706: $$storehash{'host'}=$perlvar{'lonHostID'};
4707:
4708: my $namevalue='';
4709: foreach my $key (keys(%$storehash)) {
4710: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4711: }
4712: $namevalue=~s/\&$//;
4713: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4714: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4715: }
4716:
4717: # -------------------------------------------------------------- Critical Store
4718:
4719: sub cstore {
4720: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4721: my $home='';
4722:
4723: if ($stuname) { $home=&homeserver($stuname,$domain); }
4724:
4725: $symb=&symbclean($symb);
4726: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4727:
4728: if (!$domain) { $domain=$env{'user.domain'}; }
4729: if (!$stuname) { $stuname=$env{'user.name'}; }
4730:
4731: &devalidate($symb,$stuname,$domain);
4732:
4733: $symb=escape($symb);
4734: if (!$namespace) {
4735: unless ($namespace=$env{'request.course.id'}) {
4736: return '';
4737: }
4738: }
4739: if (!$home) { $home=$env{'user.home'}; }
4740:
4741: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4742: $$storehash{'host'}=$perlvar{'lonHostID'};
4743:
4744: my $namevalue='';
4745: foreach my $key (keys(%$storehash)) {
4746: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4747: }
4748: $namevalue=~s/\&$//;
4749: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4750: return critical
4751: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4752: }
4753:
4754: # --------------------------------------------------------------------- Restore
4755:
4756: sub restore {
4757: my ($symb,$namespace,$domain,$stuname) = @_;
4758: my $home='';
4759:
4760: if ($stuname) { $home=&homeserver($stuname,$domain); }
4761:
4762: if (!$symb) {
4763: unless ($symb=escape(&symbread())) { return ''; }
4764: } else {
4765: $symb=&escape(&symbclean($symb));
4766: }
4767: if (!$namespace) {
4768: unless ($namespace=$env{'request.course.id'}) {
4769: return '';
4770: }
4771: }
4772: if (!$domain) { $domain=$env{'user.domain'}; }
4773: if (!$stuname) { $stuname=$env{'user.name'}; }
4774: if (!$home) { $home=$env{'user.home'}; }
4775: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4776:
4777: my %returnhash=();
4778: foreach my $line (split(/\&/,$answer)) {
4779: my ($name,$value)=split(/\=/,$line);
4780: $returnhash{&unescape($name)}=&thaw_unescape($value);
4781: }
4782: my $version;
4783: for ($version=1;$version<=$returnhash{'version'};$version++) {
4784: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4785: $returnhash{$item}=$returnhash{$version.':'.$item};
4786: }
4787: }
4788: return %returnhash;
4789: }
4790:
4791: # ---------------------------------------------------------- Course Description
4792: #
4793: #
4794:
4795: sub coursedescription {
4796: my ($courseid,$args)=@_;
4797: $courseid=~s/^\///;
4798: $courseid=~s/\_/\//g;
4799: my ($cdomain,$cnum)=split(/\//,$courseid);
4800: my $chome=&homeserver($cnum,$cdomain);
4801: my $normalid=$cdomain.'_'.$cnum;
4802: # need to always cache even if we get errors otherwise we keep
4803: # trying and trying and trying to get the course description.
4804: my %envhash=();
4805: my %returnhash=();
4806:
4807: my $expiretime=600;
4808: if ($env{'request.course.id'} eq $normalid) {
4809: $expiretime=120;
4810: }
4811:
4812: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4813: if (!$args->{'freshen_cache'}
4814: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4815: foreach my $key (keys(%env)) {
4816: next if ($key !~ /^\Q$prefix\E(.*)/);
4817: my ($setting) = $1;
4818: $returnhash{$setting} = $env{$key};
4819: }
4820: return %returnhash;
4821: }
4822:
4823: # get the data again
4824:
4825: if (!$args->{'one_time'}) {
4826: $envhash{'course.'.$normalid.'.last_cache'}=time;
4827: }
4828:
4829: if ($chome ne 'no_host') {
4830: %returnhash=&dump('environment',$cdomain,$cnum);
4831: if (!exists($returnhash{'con_lost'})) {
4832: my $username = $env{'user.name'}; # Defult username
4833: if(defined $args->{'user'}) {
4834: $username = $args->{'user'};
4835: }
4836: $returnhash{'home'}= $chome;
4837: $returnhash{'domain'} = $cdomain;
4838: $returnhash{'num'} = $cnum;
4839: if (!defined($returnhash{'type'})) {
4840: $returnhash{'type'} = 'Course';
4841: }
4842: while (my ($name,$value) = each %returnhash) {
4843: $envhash{'course.'.$normalid.'.'.$name}=$value;
4844: }
4845: $returnhash{'url'}=&clutter($returnhash{'url'});
4846: $returnhash{'fn'}=LONCAPA::tempdir() .
4847: $username.'_'.$cdomain.'_'.$cnum;
4848: $envhash{'course.'.$normalid.'.home'}=$chome;
4849: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4850: $envhash{'course.'.$normalid.'.num'}=$cnum;
4851: }
4852: }
4853: if (!$args->{'one_time'}) {
4854: &appenv(\%envhash);
4855: }
4856: return %returnhash;
4857: }
4858:
4859: sub update_released_required {
4860: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4861: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4862: $cid = $env{'request.course.id'};
4863: $cdom = $env{'course.'.$cid.'.domain'};
4864: $cnum = $env{'course.'.$cid.'.num'};
4865: $chome = $env{'course.'.$cid.'.home'};
4866: }
4867: if ($needsrelease) {
4868: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4869: my $needsupdate;
4870: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4871: $needsupdate = 1;
4872: } else {
4873: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4874: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4875: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4876: $needsupdate = 1;
4877: }
4878: }
4879: if ($needsupdate) {
4880: my %needshash = (
4881: 'internal.releaserequired' => $needsrelease,
4882: );
4883: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4884: if ($putresult eq 'ok') {
4885: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4886: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4887: if (ref($crsinfo{$cid}) eq 'HASH') {
4888: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4889: &courseidput($cdom,\%crsinfo,$chome,'notime');
4890: }
4891: }
4892: }
4893: }
4894: return;
4895: }
4896:
4897: # -------------------------------------------------See if a user is privileged
4898:
4899: sub privileged {
4900: my ($username,$domain)=@_;
4901:
4902: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4903: my $now = time;
4904:
4905: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4906: my ($trole, $tend, $tstart) = split(/_/, $role);
4907: if (($trole eq 'dc') || ($trole eq 'su')) {
4908: return 1 unless ($tend && $tend < $now)
4909: or ($tstart && $tstart > $now);
4910: }
4911: }
4912:
4913: return 0;
4914: }
4915:
4916: # -------------------------------------------------------- Get user privileges
4917:
4918: sub rolesinit {
4919: my ($domain, $username) = @_;
4920: my %userroles = ('user.login.time' => time);
4921: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4922:
4923: # firstaccess and timerinterval are related to timed maps/resources.
4924: # also, blocking can be triggered by an activating timer
4925: # it's saved in the user's %env.
4926: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4927: my %timerinterval = &dump('timerinterval', $domain, $username);
4928: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4929: %timerintchk, %timerintenv);
4930:
4931: foreach my $key (keys(%firstaccess)) {
4932: my ($cid, $rest) = split(/\0/, $key);
4933: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4934: }
4935:
4936: foreach my $key (keys(%timerinterval)) {
4937: my ($cid,$rest) = split(/\0/,$key);
4938: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4939: }
4940:
4941: my %allroles=();
4942: my %allgroups=();
4943:
4944: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4945: my $role = $rolesdump{$area};
4946: $area =~ s/\_\w\w$//;
4947:
4948: my ($trole, $tend, $tstart, $group_privs);
4949:
4950: if ($role =~ /^cr/) {
4951: # Custom role, defined by a user
4952: # e.g., user.role.cr/msu/smith/mynewrole
4953: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4954: $trole = $1;
4955: ($tend, $tstart) = split('_', $2);
4956: } else {
4957: $trole = $role;
4958: }
4959: } elsif ($role =~ m|^gr/|) {
4960: # Role of member in a group, defined within a course/community
4961: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4962: ($trole, $tend, $tstart) = split(/_/, $role);
4963: next if $tstart eq '-1';
4964: ($trole, $group_privs) = split(/\//, $trole);
4965: $group_privs = &unescape($group_privs);
4966: } else {
4967: # Just a normal role, defined in roles.tab
4968: ($trole, $tend, $tstart) = split(/_/,$role);
4969: }
4970:
4971: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4972: $username);
4973: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4974:
4975: # role expired or not available yet?
4976: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
4977: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
4978:
4979: next if $area eq '' or $trole eq '';
4980:
4981: my $spec = "$trole.$area";
4982: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
4983:
4984: if ($trole =~ /^cr\//) {
4985: # Custom role, defined by a user
4986: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4987: } elsif ($trole eq 'gr') {
4988: # Role of a member in a group, defined within a course/community
4989: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4990: next;
4991: } else {
4992: # Normal role, defined in roles.tab
4993: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4994: }
4995:
4996: my $cid = $tdomain.'_'.$trest;
4997: unless ($firstaccchk{$cid}) {
4998: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4999: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5000: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5001: $coursetimerstarts{$cid}{$item};
5002: }
5003: }
5004: $firstaccchk{$cid} = 1;
5005: }
5006: unless ($timerintchk{$cid}) {
5007: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5008: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5009: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5010: $coursetimerintervals{$cid}{$item};
5011: }
5012: }
5013: $timerintchk{$cid} = 1;
5014: }
5015: }
5016:
5017: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5018: \%allroles, \%allgroups);
5019: $env{'user.adv'} = $userroles{'user.adv'};
5020:
5021: return (\%userroles,\%firstaccenv,\%timerintenv);
5022: }
5023:
5024: sub set_arearole {
5025: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
5026: # log the associated role with the area
5027: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5028: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5029: }
5030:
5031: sub custom_roleprivs {
5032: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5033: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5034: my $homsvr=homeserver($rauthor,$rdomain);
5035: if (&hostname($homsvr) ne '') {
5036: my ($rdummy,$roledef)=
5037: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5038: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5039: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5040: if (defined($syspriv)) {
5041: if ($trest =~ /^$match_community$/) {
5042: $syspriv =~ s/bre\&S//;
5043: }
5044: $$allroles{'cm./'}.=':'.$syspriv;
5045: $$allroles{$spec.'./'}.=':'.$syspriv;
5046: }
5047: if ($tdomain ne '') {
5048: if (defined($dompriv)) {
5049: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5050: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5051: }
5052: if (($trest ne '') && (defined($coursepriv))) {
5053: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5054: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5055: }
5056: }
5057: }
5058: }
5059: }
5060:
5061: sub group_roleprivs {
5062: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5063: my $access = 1;
5064: my $now = time;
5065: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5066: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5067: if ($access) {
5068: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5069: $$allgroups{$course}{$group} .=':'.$group_privs;
5070: }
5071: }
5072:
5073: sub standard_roleprivs {
5074: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5075: if (defined($pr{$trole.':s'})) {
5076: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5077: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5078: }
5079: if ($tdomain ne '') {
5080: if (defined($pr{$trole.':d'})) {
5081: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5082: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5083: }
5084: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5085: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5086: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5087: }
5088: }
5089: }
5090:
5091: sub set_userprivs {
5092: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5093: my $author=0;
5094: my $adv=0;
5095: my %grouproles = ();
5096: if (keys(%{$allgroups}) > 0) {
5097: my @groupkeys;
5098: foreach my $role (keys(%{$allroles})) {
5099: push(@groupkeys,$role);
5100: }
5101: if (ref($groups_roles) eq 'HASH') {
5102: foreach my $key (keys(%{$groups_roles})) {
5103: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5104: push(@groupkeys,$key);
5105: }
5106: }
5107: }
5108: if (@groupkeys > 0) {
5109: foreach my $role (@groupkeys) {
5110: my ($trole,$area,$sec,$extendedarea);
5111: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5112: $trole = $1;
5113: $area = $2;
5114: $sec = $3;
5115: $extendedarea = $area.$sec;
5116: if (exists($$allgroups{$area})) {
5117: foreach my $group (keys(%{$$allgroups{$area}})) {
5118: my $spec = $trole.'.'.$extendedarea;
5119: $grouproles{$spec.'.'.$area.'/'.$group} =
5120: $$allgroups{$area}{$group};
5121: }
5122: }
5123: }
5124: }
5125: }
5126: }
5127: foreach my $group (keys(%grouproles)) {
5128: $$allroles{$group} = $grouproles{$group};
5129: }
5130: foreach my $role (keys(%{$allroles})) {
5131: my %thesepriv;
5132: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5133: foreach my $item (split(/:/,$$allroles{$role})) {
5134: if ($item ne '') {
5135: my ($privilege,$restrictions)=split(/&/,$item);
5136: if ($restrictions eq '') {
5137: $thesepriv{$privilege}='F';
5138: } elsif ($thesepriv{$privilege} ne 'F') {
5139: $thesepriv{$privilege}.=$restrictions;
5140: }
5141: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5142: }
5143: }
5144: my $thesestr='';
5145: foreach my $priv (sort(keys(%thesepriv))) {
5146: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5147: }
5148: $userroles->{'user.priv.'.$role} = $thesestr;
5149: }
5150: return ($author,$adv);
5151: }
5152:
5153: sub role_status {
5154: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5155: my @pwhere = ();
5156: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5157: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5158: unless (!defined($$role) || $$role eq '') {
5159: $$where=join('.',@pwhere);
5160: $$trolecode=$$role.'.'.$$where;
5161: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5162: $$tstatus='is';
5163: if ($$tstart && $$tstart>$update) {
5164: $$tstatus='future';
5165: if ($$tstart<$now) {
5166: if ($$tstart && $$tstart>$refresh) {
5167: if (($$where ne '') && ($$role ne '')) {
5168: my (%allroles,%allgroups,$group_privs,
5169: %groups_roles,@rolecodes);
5170: my %userroles = (
5171: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5172: );
5173: @rolecodes = ('cm');
5174: my $spec=$$role.'.'.$$where;
5175: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5176: if ($$role =~ /^cr\//) {
5177: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5178: push(@rolecodes,'cr');
5179: } elsif ($$role eq 'gr') {
5180: push(@rolecodes,$$role);
5181: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5182: $env{'user.name'});
5183: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5184: (undef,my $group_privs) = split(/\//,$trole);
5185: $group_privs = &unescape($group_privs);
5186: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5187: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5188: &get_groups_roles($tdomain,$trest,
5189: \%course_roles,\@rolecodes,
5190: \%groups_roles);
5191: } else {
5192: push(@rolecodes,$$role);
5193: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5194: }
5195: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5196: &appenv(\%userroles,\@rolecodes);
5197: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5198: }
5199: }
5200: $$tstatus = 'is';
5201: }
5202: }
5203: if ($$tend) {
5204: if ($$tend<$update) {
5205: $$tstatus='expired';
5206: } elsif ($$tend<$now) {
5207: $$tstatus='will_not';
5208: }
5209: }
5210: }
5211: }
5212: }
5213:
5214: sub get_groups_roles {
5215: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5216: return unless((ref($cdom_courseroles) eq 'HASH') &&
5217: (ref($rolecodes) eq 'ARRAY') &&
5218: (ref($groups_roles) eq 'HASH'));
5219: if (keys(%{$cdom_courseroles}) > 0) {
5220: my ($cnum) = ($rest =~ /^($match_courseid)/);
5221: if ($cdom ne '' && $cnum ne '') {
5222: foreach my $key (keys(%{$cdom_courseroles})) {
5223: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5224: my $crsrole = $1;
5225: my $crssec = $2;
5226: if ($crsrole =~ /^cr/) {
5227: unless (grep(/^cr$/,@{$rolecodes})) {
5228: push(@{$rolecodes},'cr');
5229: }
5230: } else {
5231: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5232: push(@{$rolecodes},$crsrole);
5233: }
5234: }
5235: my $rolekey = "$crsrole./$cdom/$cnum";
5236: if ($crssec ne '') {
5237: $rolekey .= "/$crssec";
5238: }
5239: $rolekey .= './';
5240: $groups_roles->{$rolekey} = $rolecodes;
5241: }
5242: }
5243: }
5244: }
5245: return;
5246: }
5247:
5248: sub delete_env_groupprivs {
5249: my ($where,$courseroles,$possroles) = @_;
5250: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5251: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5252: unless (ref($courseroles->{$udom}) eq 'HASH') {
5253: %{$courseroles->{$udom}} =
5254: &get_my_roles('','','userroles',['active'],
5255: $possroles,[$udom],1);
5256: }
5257: if (ref($courseroles->{$udom}) eq 'HASH') {
5258: foreach my $item (keys(%{$courseroles->{$udom}})) {
5259: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5260: my $area = '/'.$cdom.'/'.$cnum;
5261: my $privkey = "user.priv.$crsrole.$area";
5262: if ($crssec ne '') {
5263: $privkey .= '/'.$crssec;
5264: }
5265: $privkey .= ".$area/$group";
5266: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5267: }
5268: }
5269: return;
5270: }
5271:
5272: sub check_adhoc_privs {
5273: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5274: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5275: my $setprivs;
5276: if ($env{$cckey}) {
5277: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5278: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5279: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5280: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5281: $setprivs = 1;
5282: }
5283: } else {
5284: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5285: $setprivs = 1;
5286: }
5287: return $setprivs;
5288: }
5289:
5290: sub set_adhoc_privileges {
5291: # role can be cc or ca
5292: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5293: my $area = '/'.$dcdom.'/'.$pickedcourse;
5294: my $spec = $role.'.'.$area;
5295: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5296: $env{'user.name'});
5297: my %ccrole = ();
5298: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5299: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5300: &appenv(\%userroles,[$role,'cm']);
5301: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5302: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5303: &appenv( {'request.role' => $spec,
5304: 'request.role.domain' => $dcdom,
5305: 'request.course.sec' => ''
5306: }
5307: );
5308: my $tadv=0;
5309: if (&allowed('adv') eq 'F') { $tadv=1; }
5310: &appenv({'request.role.adv' => $tadv});
5311: }
5312: }
5313:
5314: # --------------------------------------------------------------- get interface
5315:
5316: sub get {
5317: my ($namespace,$storearr,$udomain,$uname)=@_;
5318: my $items='';
5319: foreach my $item (@$storearr) {
5320: $items.=&escape($item).'&';
5321: }
5322: $items=~s/\&$//;
5323: if (!$udomain) { $udomain=$env{'user.domain'}; }
5324: if (!$uname) { $uname=$env{'user.name'}; }
5325: my $uhome=&homeserver($uname,$udomain);
5326:
5327: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5328: my @pairs=split(/\&/,$rep);
5329: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5330: return @pairs;
5331: }
5332: my %returnhash=();
5333: my $i=0;
5334: foreach my $item (@$storearr) {
5335: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5336: $i++;
5337: }
5338: return %returnhash;
5339: }
5340:
5341: # --------------------------------------------------------------- del interface
5342:
5343: sub del {
5344: my ($namespace,$storearr,$udomain,$uname)=@_;
5345: my $items='';
5346: foreach my $item (@$storearr) {
5347: $items.=&escape($item).'&';
5348: }
5349:
5350: $items=~s/\&$//;
5351: if (!$udomain) { $udomain=$env{'user.domain'}; }
5352: if (!$uname) { $uname=$env{'user.name'}; }
5353: my $uhome=&homeserver($uname,$udomain);
5354: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5355: }
5356:
5357: # -------------------------------------------------------------- dump interface
5358:
5359: sub unserialize {
5360: my ($rep, $escapedkeys) = @_;
5361:
5362: return {} if $rep =~ /^error/;
5363:
5364: my %returnhash=();
5365: foreach my $item (split /\&/, $rep) {
5366: my ($key, $value) = split(/=/, $item, 2);
5367: $key = unescape($key) unless $escapedkeys;
5368: next if $key =~ /^error: 2 /;
5369: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5370: }
5371: #return %returnhash;
5372: return \%returnhash;
5373: }
5374:
5375: # see Lond::dump_with_regexp
5376: # if $escapedkeys hash keys won't get unescaped.
5377: sub dump {
5378: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5379: if (!$udomain) { $udomain=$env{'user.domain'}; }
5380: if (!$uname) { $uname=$env{'user.name'}; }
5381: my $uhome=&homeserver($uname,$udomain);
5382:
5383: my $reply;
5384: if (grep { $_ eq $uhome } current_machine_ids()) {
5385: # user is hosted on this machine
5386: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5387: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5388: return %{unserialize($reply, $escapedkeys)};
5389: }
5390: if ($regexp) {
5391: $regexp=&escape($regexp);
5392: } else {
5393: $regexp='.';
5394: }
5395: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5396: my @pairs=split(/\&/,$rep);
5397: my %returnhash=();
5398: if (!($rep =~ /^error/ )) {
5399: foreach my $item (@pairs) {
5400: my ($key,$value)=split(/=/,$item,2);
5401: $key = unescape($key) unless $escapedkeys;
5402: #$key = &unescape($key);
5403: next if ($key =~ /^error: 2 /);
5404: $returnhash{$key}=&thaw_unescape($value);
5405: }
5406: }
5407: return %returnhash;
5408: }
5409:
5410:
5411: # --------------------------------------------------------- dumpstore interface
5412:
5413: sub dumpstore {
5414: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5415: # same as dump but keys must be escaped. They may contain colon separated
5416: # lists of values that may themself contain colons (e.g. symbs).
5417: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5418: }
5419:
5420: # -------------------------------------------------------------- keys interface
5421:
5422: sub getkeys {
5423: my ($namespace,$udomain,$uname)=@_;
5424: if (!$udomain) { $udomain=$env{'user.domain'}; }
5425: if (!$uname) { $uname=$env{'user.name'}; }
5426: my $uhome=&homeserver($uname,$udomain);
5427: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5428: my @keyarray=();
5429: foreach my $key (split(/\&/,$rep)) {
5430: next if ($key =~ /^error: 2 /);
5431: push(@keyarray,&unescape($key));
5432: }
5433: return @keyarray;
5434: }
5435:
5436: # --------------------------------------------------------------- currentdump
5437: sub currentdump {
5438: my ($courseid,$sdom,$sname)=@_;
5439: $courseid = $env{'request.course.id'} if (! defined($courseid));
5440: $sdom = $env{'user.domain'} if (! defined($sdom));
5441: $sname = $env{'user.name'} if (! defined($sname));
5442: my $uhome = &homeserver($sname,$sdom);
5443: my $rep;
5444:
5445: if (grep { $_ eq $uhome } current_machine_ids()) {
5446: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5447: $courseid)));
5448: } else {
5449: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5450: }
5451:
5452: return if ($rep =~ /^(error:|no_such_host)/);
5453: #
5454: my %returnhash=();
5455: #
5456: if ($rep eq "unknown_cmd") {
5457: # an old lond will not know currentdump
5458: # Do a dump and make it look like a currentdump
5459: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5460: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5461: my %hash = @tmp;
5462: @tmp=();
5463: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5464: } else {
5465: my @pairs=split(/\&/,$rep);
5466: foreach my $pair (@pairs) {
5467: my ($key,$value)=split(/=/,$pair,2);
5468: my ($symb,$param) = split(/:/,$key);
5469: $returnhash{&unescape($symb)}->{&unescape($param)} =
5470: &thaw_unescape($value);
5471: }
5472: }
5473: return %returnhash;
5474: }
5475:
5476: sub convert_dump_to_currentdump{
5477: my %hash = %{shift()};
5478: my %returnhash;
5479: # Code ripped from lond, essentially. The only difference
5480: # here is the unescaping done by lonnet::dump(). Conceivably
5481: # we might run in to problems with parameter names =~ /^v\./
5482: while (my ($key,$value) = each(%hash)) {
5483: my ($v,$symb,$param) = split(/:/,$key);
5484: $symb = &unescape($symb);
5485: $param = &unescape($param);
5486: next if ($v eq 'version' || $symb eq 'keys');
5487: next if (exists($returnhash{$symb}) &&
5488: exists($returnhash{$symb}->{$param}) &&
5489: $returnhash{$symb}->{'v.'.$param} > $v);
5490: $returnhash{$symb}->{$param}=$value;
5491: $returnhash{$symb}->{'v.'.$param}=$v;
5492: }
5493: #
5494: # Remove all of the keys in the hashes which keep track of
5495: # the version of the parameter.
5496: while (my ($symb,$param_hash) = each(%returnhash)) {
5497: # use a foreach because we are going to delete from the hash.
5498: foreach my $key (keys(%$param_hash)) {
5499: delete($param_hash->{$key}) if ($key =~ /^v\./);
5500: }
5501: }
5502: return \%returnhash;
5503: }
5504:
5505: # ------------------------------------------------------ critical inc interface
5506:
5507: sub cinc {
5508: return &inc(@_,'critical');
5509: }
5510:
5511: # --------------------------------------------------------------- inc interface
5512:
5513: sub inc {
5514: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5515: if (!$udomain) { $udomain=$env{'user.domain'}; }
5516: if (!$uname) { $uname=$env{'user.name'}; }
5517: my $uhome=&homeserver($uname,$udomain);
5518: my $items='';
5519: if (! ref($store)) {
5520: # got a single value, so use that instead
5521: $items = &escape($store).'=&';
5522: } elsif (ref($store) eq 'SCALAR') {
5523: $items = &escape($$store).'=&';
5524: } elsif (ref($store) eq 'ARRAY') {
5525: $items = join('=&',map {&escape($_);} @{$store});
5526: } elsif (ref($store) eq 'HASH') {
5527: while (my($key,$value) = each(%{$store})) {
5528: $items.= &escape($key).'='.&escape($value).'&';
5529: }
5530: }
5531: $items=~s/\&$//;
5532: if ($critical) {
5533: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5534: } else {
5535: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5536: }
5537: }
5538:
5539: # --------------------------------------------------------------- put interface
5540:
5541: sub put {
5542: my ($namespace,$storehash,$udomain,$uname)=@_;
5543: if (!$udomain) { $udomain=$env{'user.domain'}; }
5544: if (!$uname) { $uname=$env{'user.name'}; }
5545: my $uhome=&homeserver($uname,$udomain);
5546: my $items='';
5547: foreach my $item (keys(%$storehash)) {
5548: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5549: }
5550: $items=~s/\&$//;
5551: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5552: }
5553:
5554: # ------------------------------------------------------------ newput interface
5555:
5556: sub newput {
5557: my ($namespace,$storehash,$udomain,$uname)=@_;
5558: if (!$udomain) { $udomain=$env{'user.domain'}; }
5559: if (!$uname) { $uname=$env{'user.name'}; }
5560: my $uhome=&homeserver($uname,$udomain);
5561: my $items='';
5562: foreach my $key (keys(%$storehash)) {
5563: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5564: }
5565: $items=~s/\&$//;
5566: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5567: }
5568:
5569: # --------------------------------------------------------- putstore interface
5570:
5571: sub putstore {
5572: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5573: if (!$udomain) { $udomain=$env{'user.domain'}; }
5574: if (!$uname) { $uname=$env{'user.name'}; }
5575: my $uhome=&homeserver($uname,$udomain);
5576: my $items='';
5577: foreach my $key (keys(%$storehash)) {
5578: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5579: }
5580: $items=~s/\&$//;
5581: my $esc_symb=&escape($symb);
5582: my $esc_v=&escape($version);
5583: my $reply =
5584: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5585: $uhome);
5586: if ($reply eq 'unknown_cmd') {
5587: # gfall back to way things use to be done
5588: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5589: $uname);
5590: }
5591: return $reply;
5592: }
5593:
5594: sub old_putstore {
5595: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5596: if (!$udomain) { $udomain=$env{'user.domain'}; }
5597: if (!$uname) { $uname=$env{'user.name'}; }
5598: my $uhome=&homeserver($uname,$udomain);
5599: my %newstorehash;
5600: foreach my $item (keys(%$storehash)) {
5601: my $key = $version.':'.&escape($symb).':'.$item;
5602: $newstorehash{$key} = $storehash->{$item};
5603: }
5604: my $items='';
5605: my %allitems = ();
5606: foreach my $item (keys(%newstorehash)) {
5607: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5608: my $key = $1.':keys:'.$2;
5609: $allitems{$key} .= $3.':';
5610: }
5611: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5612: }
5613: foreach my $item (keys(%allitems)) {
5614: $allitems{$item} =~ s/\:$//;
5615: $items.= $item.'='.$allitems{$item}.'&';
5616: }
5617: $items=~s/\&$//;
5618: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5619: }
5620:
5621: # ------------------------------------------------------ critical put interface
5622:
5623: sub cput {
5624: my ($namespace,$storehash,$udomain,$uname)=@_;
5625: if (!$udomain) { $udomain=$env{'user.domain'}; }
5626: if (!$uname) { $uname=$env{'user.name'}; }
5627: my $uhome=&homeserver($uname,$udomain);
5628: my $items='';
5629: foreach my $item (keys(%$storehash)) {
5630: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5631: }
5632: $items=~s/\&$//;
5633: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5634: }
5635:
5636: # -------------------------------------------------------------- eget interface
5637:
5638: sub eget {
5639: my ($namespace,$storearr,$udomain,$uname)=@_;
5640: my $items='';
5641: foreach my $item (@$storearr) {
5642: $items.=&escape($item).'&';
5643: }
5644: $items=~s/\&$//;
5645: if (!$udomain) { $udomain=$env{'user.domain'}; }
5646: if (!$uname) { $uname=$env{'user.name'}; }
5647: my $uhome=&homeserver($uname,$udomain);
5648: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5649: my @pairs=split(/\&/,$rep);
5650: my %returnhash=();
5651: my $i=0;
5652: foreach my $item (@$storearr) {
5653: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5654: $i++;
5655: }
5656: return %returnhash;
5657: }
5658:
5659: # ------------------------------------------------------------ tmpput interface
5660: sub tmpput {
5661: my ($storehash,$server,$context)=@_;
5662: my $items='';
5663: foreach my $item (keys(%$storehash)) {
5664: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5665: }
5666: $items=~s/\&$//;
5667: if (defined($context)) {
5668: $items .= ':'.&escape($context);
5669: }
5670: return &reply("tmpput:$items",$server);
5671: }
5672:
5673: # ------------------------------------------------------------ tmpget interface
5674: sub tmpget {
5675: my ($token,$server)=@_;
5676: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5677: my $rep=&reply("tmpget:$token",$server);
5678: my %returnhash;
5679: foreach my $item (split(/\&/,$rep)) {
5680: my ($key,$value)=split(/=/,$item);
5681: next if ($key =~ /^error: 2 /);
5682: $returnhash{&unescape($key)}=&thaw_unescape($value);
5683: }
5684: return %returnhash;
5685: }
5686:
5687: # ------------------------------------------------------------ tmpdel interface
5688: sub tmpdel {
5689: my ($token,$server)=@_;
5690: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5691: return &reply("tmpdel:$token",$server);
5692: }
5693:
5694: # -------------------------------------------------- portfolio access checking
5695:
5696: sub portfolio_access {
5697: my ($requrl) = @_;
5698: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5699: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5700: if ($result) {
5701: my %setters;
5702: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5703: my ($startblock,$endblock) =
5704: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5705: if ($startblock && $endblock) {
5706: return 'B';
5707: }
5708: } else {
5709: my ($startblock,$endblock) =
5710: &Apache::loncommon::blockcheck(\%setters,'port');
5711: if ($startblock && $endblock) {
5712: return 'B';
5713: }
5714: }
5715: }
5716: if ($result eq 'ok') {
5717: return 'F';
5718: } elsif ($result =~ /^[^:]+:guest_/) {
5719: return 'A';
5720: }
5721: return '';
5722: }
5723:
5724: sub get_portfolio_access {
5725: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5726:
5727: if (!ref($access_hash)) {
5728: my $current_perms = &get_portfile_permissions($udom,$unum);
5729: my %access_controls = &get_access_controls($current_perms,$group,
5730: $file_name);
5731: $access_hash = $access_controls{$file_name};
5732: }
5733:
5734: my ($public,$guest,@domains,@users,@courses,@groups);
5735: my $now = time;
5736: if (ref($access_hash) eq 'HASH') {
5737: foreach my $key (keys(%{$access_hash})) {
5738: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5739: if ($start > $now) {
5740: next;
5741: }
5742: if ($end && $end<$now) {
5743: next;
5744: }
5745: if ($scope eq 'public') {
5746: $public = $key;
5747: last;
5748: } elsif ($scope eq 'guest') {
5749: $guest = $key;
5750: } elsif ($scope eq 'domains') {
5751: push(@domains,$key);
5752: } elsif ($scope eq 'users') {
5753: push(@users,$key);
5754: } elsif ($scope eq 'course') {
5755: push(@courses,$key);
5756: } elsif ($scope eq 'group') {
5757: push(@groups,$key);
5758: }
5759: }
5760: if ($public) {
5761: return 'ok';
5762: }
5763: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5764: if ($guest) {
5765: return $guest;
5766: }
5767: } else {
5768: if (@domains > 0) {
5769: foreach my $domkey (@domains) {
5770: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5771: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5772: return 'ok';
5773: }
5774: }
5775: }
5776: }
5777: if (@users > 0) {
5778: foreach my $userkey (@users) {
5779: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5780: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5781: if (ref($item) eq 'HASH') {
5782: if (($item->{'uname'} eq $env{'user.name'}) &&
5783: ($item->{'udom'} eq $env{'user.domain'})) {
5784: return 'ok';
5785: }
5786: }
5787: }
5788: }
5789: }
5790: }
5791: my %roleshash;
5792: my @courses_and_groups = @courses;
5793: push(@courses_and_groups,@groups);
5794: if (@courses_and_groups > 0) {
5795: my (%allgroups,%allroles);
5796: my ($start,$end,$role,$sec,$group);
5797: foreach my $envkey (%env) {
5798: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5799: my $cid = $2.'_'.$3;
5800: if ($1 eq 'gr') {
5801: $group = $4;
5802: $allgroups{$cid}{$group} = $env{$envkey};
5803: } else {
5804: if ($4 eq '') {
5805: $sec = 'none';
5806: } else {
5807: $sec = $4;
5808: }
5809: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5810: }
5811: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5812: my $cid = $2.'_'.$3;
5813: if ($4 eq '') {
5814: $sec = 'none';
5815: } else {
5816: $sec = $4;
5817: }
5818: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5819: }
5820: }
5821: if (keys(%allroles) == 0) {
5822: return;
5823: }
5824: foreach my $key (@courses_and_groups) {
5825: my %content = %{$$access_hash{$key}};
5826: my $cnum = $content{'number'};
5827: my $cdom = $content{'domain'};
5828: my $cid = $cdom.'_'.$cnum;
5829: if (!exists($allroles{$cid})) {
5830: next;
5831: }
5832: foreach my $role_id (keys(%{$content{'roles'}})) {
5833: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5834: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5835: my @status = @{$content{'roles'}{$role_id}{'access'}};
5836: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5837: foreach my $role (keys(%{$allroles{$cid}})) {
5838: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5839: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5840: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5841: if (grep/^all$/,@sections) {
5842: return 'ok';
5843: } else {
5844: if (grep/^$sec$/,@sections) {
5845: return 'ok';
5846: }
5847: }
5848: }
5849: }
5850: if (keys(%{$allgroups{$cid}}) == 0) {
5851: if (grep/^none$/,@groups) {
5852: return 'ok';
5853: }
5854: } else {
5855: if (grep/^all$/,@groups) {
5856: return 'ok';
5857: }
5858: foreach my $group (keys(%{$allgroups{$cid}})) {
5859: if (grep/^$group$/,@groups) {
5860: return 'ok';
5861: }
5862: }
5863: }
5864: }
5865: }
5866: }
5867: }
5868: }
5869: if ($guest) {
5870: return $guest;
5871: }
5872: }
5873: }
5874: return;
5875: }
5876:
5877: sub course_group_datechecker {
5878: my ($dates,$now,$status) = @_;
5879: my ($start,$end) = split(/\./,$dates);
5880: if (!$start && !$end) {
5881: return 'ok';
5882: }
5883: if (grep/^active$/,@{$status}) {
5884: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5885: return 'ok';
5886: }
5887: }
5888: if (grep/^previous$/,@{$status}) {
5889: if ($end > $now ) {
5890: return 'ok';
5891: }
5892: }
5893: if (grep/^future$/,@{$status}) {
5894: if ($start > $now) {
5895: return 'ok';
5896: }
5897: }
5898: return;
5899: }
5900:
5901: sub parse_portfolio_url {
5902: my ($url) = @_;
5903:
5904: my ($type,$udom,$unum,$group,$file_name);
5905:
5906: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5907: $type = 1;
5908: $udom = $1;
5909: $unum = $2;
5910: $file_name = $3;
5911: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5912: $type = 2;
5913: $udom = $1;
5914: $unum = $2;
5915: $group = $3;
5916: $file_name = $3.'/'.$4;
5917: }
5918: if (wantarray) {
5919: return ($type,$udom,$unum,$file_name,$group);
5920: }
5921: return $type;
5922: }
5923:
5924: sub is_portfolio_url {
5925: my ($url) = @_;
5926: return scalar(&parse_portfolio_url($url));
5927: }
5928:
5929: sub is_portfolio_file {
5930: my ($file) = @_;
5931: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5932: return 1;
5933: }
5934: return;
5935: }
5936:
5937: sub usertools_access {
5938: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5939: my ($access,%tools);
5940: if ($context eq '') {
5941: $context = 'tools';
5942: }
5943: if ($context eq 'requestcourses') {
5944: %tools = (
5945: official => 1,
5946: unofficial => 1,
5947: community => 1,
5948: );
5949: } elsif ($context eq 'requestauthor') {
5950: %tools = (
5951: requestauthor => 1,
5952: );
5953: } else {
5954: %tools = (
5955: aboutme => 1,
5956: blog => 1,
5957: webdav => 1,
5958: portfolio => 1,
5959: );
5960: }
5961: return if (!defined($tools{$tool}));
5962:
5963: if ((!defined($udom)) || (!defined($uname))) {
5964: $udom = $env{'user.domain'};
5965: $uname = $env{'user.name'};
5966: }
5967:
5968: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5969: if ($action ne 'reload') {
5970: if ($context eq 'requestcourses') {
5971: return $env{'environment.canrequest.'.$tool};
5972: } elsif ($context eq 'requestauthor') {
5973: return $env{'environment.canrequest.author'};
5974: } else {
5975: return $env{'environment.availabletools.'.$tool};
5976: }
5977: }
5978: }
5979:
5980: my ($toolstatus,$inststatus,$envkey);
5981: if ($context eq 'requestauthor') {
5982: $envkey = $context;
5983: } else {
5984: $envkey = $context.'.'.$tool;
5985: }
5986:
5987: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5988: ($action ne 'reload')) {
5989: $toolstatus = $env{'environment.'.$envkey};
5990: $inststatus = $env{'environment.inststatus'};
5991: } else {
5992: if (ref($userenvref) eq 'HASH') {
5993: $toolstatus = $userenvref->{$envkey};
5994: $inststatus = $userenvref->{'inststatus'};
5995: } else {
5996: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
5997: $toolstatus = $userenv{$envkey};
5998: $inststatus = $userenv{'inststatus'};
5999: }
6000: }
6001:
6002: if ($toolstatus ne '') {
6003: if ($toolstatus) {
6004: $access = 1;
6005: } else {
6006: $access = 0;
6007: }
6008: return $access;
6009: }
6010:
6011: my ($is_adv,%domdef);
6012: if (ref($is_advref) eq 'HASH') {
6013: $is_adv = $is_advref->{'is_adv'};
6014: } else {
6015: $is_adv = &is_advanced_user($udom,$uname);
6016: }
6017: if (ref($domdefref) eq 'HASH') {
6018: %domdef = %{$domdefref};
6019: } else {
6020: %domdef = &get_domain_defaults($udom);
6021: }
6022: if (ref($domdef{$tool}) eq 'HASH') {
6023: if ($is_adv) {
6024: if ($domdef{$tool}{'_LC_adv'} ne '') {
6025: if ($domdef{$tool}{'_LC_adv'}) {
6026: $access = 1;
6027: } else {
6028: $access = 0;
6029: }
6030: return $access;
6031: }
6032: }
6033: if ($inststatus ne '') {
6034: my ($hasaccess,$hasnoaccess);
6035: foreach my $affiliation (split(/:/,$inststatus)) {
6036: if ($domdef{$tool}{$affiliation} ne '') {
6037: if ($domdef{$tool}{$affiliation}) {
6038: $hasaccess = 1;
6039: } else {
6040: $hasnoaccess = 1;
6041: }
6042: }
6043: }
6044: if ($hasaccess || $hasnoaccess) {
6045: if ($hasaccess) {
6046: $access = 1;
6047: } elsif ($hasnoaccess) {
6048: $access = 0;
6049: }
6050: return $access;
6051: }
6052: } else {
6053: if ($domdef{$tool}{'default'} ne '') {
6054: if ($domdef{$tool}{'default'}) {
6055: $access = 1;
6056: } elsif ($domdef{$tool}{'default'} == 0) {
6057: $access = 0;
6058: }
6059: return $access;
6060: }
6061: }
6062: } else {
6063: if (($context eq 'tools') && ($tool ne 'webdav')) {
6064: $access = 1;
6065: } else {
6066: $access = 0;
6067: }
6068: return $access;
6069: }
6070: }
6071:
6072: sub is_course_owner {
6073: my ($cdom,$cnum,$udom,$uname) = @_;
6074: if (($udom eq '') || ($uname eq '')) {
6075: $udom = $env{'user.domain'};
6076: $uname = $env{'user.name'};
6077: }
6078: unless (($udom eq '') || ($uname eq '')) {
6079: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6080: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6081: return 1;
6082: } else {
6083: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6084: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6085: return 1;
6086: }
6087: }
6088: }
6089: }
6090: return;
6091: }
6092:
6093: sub is_advanced_user {
6094: my ($udom,$uname) = @_;
6095: if ($udom ne '' && $uname ne '') {
6096: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6097: if (wantarray) {
6098: return ($env{'user.adv'},$env{'user.author'});
6099: } else {
6100: return $env{'user.adv'};
6101: }
6102: }
6103: }
6104: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6105: my %allroles;
6106: my ($is_adv,$is_author);
6107: foreach my $role (keys(%roleshash)) {
6108: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6109: my $area = '/'.$tdomain.'/'.$trest;
6110: if ($sec ne '') {
6111: $area .= '/'.$sec;
6112: }
6113: if (($area ne '') && ($trole ne '')) {
6114: my $spec=$trole.'.'.$area;
6115: if ($trole =~ /^cr\//) {
6116: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6117: } elsif ($trole ne 'gr') {
6118: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6119: }
6120: if ($trole eq 'au') {
6121: $is_author = 1;
6122: }
6123: }
6124: }
6125: foreach my $role (keys(%allroles)) {
6126: last if ($is_adv);
6127: foreach my $item (split(/:/,$allroles{$role})) {
6128: if ($item ne '') {
6129: my ($privilege,$restrictions)=split(/&/,$item);
6130: if ($privilege eq 'adv') {
6131: $is_adv = 1;
6132: last;
6133: }
6134: }
6135: }
6136: }
6137: if (wantarray) {
6138: return ($is_adv,$is_author);
6139: }
6140: return $is_adv;
6141: }
6142:
6143: sub check_can_request {
6144: my ($dom,$can_request,$request_domains) = @_;
6145: my $canreq = 0;
6146: my ($types,$typename) = &Apache::loncommon::course_types();
6147: my @options = ('approval','validate','autolimit');
6148: my $optregex = join('|',@options);
6149: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6150: foreach my $type (@{$types}) {
6151: if (&usertools_access($env{'user.name'},
6152: $env{'user.domain'},
6153: $type,undef,'requestcourses')) {
6154: $canreq ++;
6155: if (ref($request_domains) eq 'HASH') {
6156: push(@{$request_domains->{$type}},$env{'user.domain'});
6157: }
6158: if ($dom eq $env{'user.domain'}) {
6159: $can_request->{$type} = 1;
6160: }
6161: }
6162: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6163: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6164: if (@curr > 0) {
6165: foreach my $item (@curr) {
6166: if (ref($request_domains) eq 'HASH') {
6167: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6168: if ($otherdom ne '') {
6169: if (ref($request_domains->{$type}) eq 'ARRAY') {
6170: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6171: push(@{$request_domains->{$type}},$otherdom);
6172: }
6173: } else {
6174: push(@{$request_domains->{$type}},$otherdom);
6175: }
6176: }
6177: }
6178: }
6179: unless($dom eq $env{'user.domain'}) {
6180: $canreq ++;
6181: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6182: $can_request->{$type} = 1;
6183: }
6184: }
6185: }
6186: }
6187: }
6188: }
6189: return $canreq;
6190: }
6191:
6192: # ---------------------------------------------- Custom access rule evaluation
6193:
6194: sub customaccess {
6195: my ($priv,$uri)=@_;
6196: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6197: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6198: $udom = &LONCAPA::clean_domain($udom);
6199: $ucrs = &LONCAPA::clean_username($ucrs);
6200: my $access=0;
6201: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6202: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6203: if ($type eq 'user') {
6204: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6205: my ($tdom,$tuname)=split(m{/},$scope);
6206: if ($tdom) {
6207: if ($tdom ne $env{'user.domain'}) { next; }
6208: }
6209: if ($tuname) {
6210: if ($tuname ne $env{'user.name'}) { next; }
6211: }
6212: $access=($effect eq 'allow');
6213: last;
6214: }
6215: } else {
6216: if ($role) {
6217: if ($role ne $urole) { next; }
6218: }
6219: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6220: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6221: if ($tdom) {
6222: if ($tdom ne $udom) { next; }
6223: }
6224: if ($tcrs) {
6225: if ($tcrs ne $ucrs) { next; }
6226: }
6227: if ($tsec) {
6228: if ($tsec ne $usec) { next; }
6229: }
6230: $access=($effect eq 'allow');
6231: last;
6232: }
6233: if ($realm eq '' && $role eq '') {
6234: $access=($effect eq 'allow');
6235: }
6236: }
6237: }
6238: return $access;
6239: }
6240:
6241: # ------------------------------------------------- Check for a user privilege
6242:
6243: sub allowed {
6244: my ($priv,$uri,$symb,$role)=@_;
6245: my $ver_orguri=$uri;
6246: $uri=&deversion($uri);
6247: my $orguri=$uri;
6248: $uri=&declutter($uri);
6249:
6250: if ($priv eq 'evb') {
6251: # Evade communication block restrictions for specified role in a course
6252: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6253: return $1;
6254: } else {
6255: return;
6256: }
6257: }
6258:
6259: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6260: # Free bre access to adm and meta resources
6261: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6262: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6263: && ($priv eq 'bre')) {
6264: return 'F';
6265: }
6266:
6267: # Free bre access to user's own portfolio contents
6268: my ($space,$domain,$name,@dir)=split('/',$uri);
6269: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6270: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6271: my %setters;
6272: my ($startblock,$endblock) =
6273: &Apache::loncommon::blockcheck(\%setters,'port');
6274: if ($startblock && $endblock) {
6275: return 'B';
6276: } else {
6277: return 'F';
6278: }
6279: }
6280:
6281: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6282: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6283: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6284: if (exists($env{'request.course.id'})) {
6285: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6286: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6287: if (($domain eq $cdom) && ($name eq $cnum)) {
6288: my $courseprivid=$env{'request.course.id'};
6289: $courseprivid=~s/\_/\//;
6290: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6291: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6292: return $1;
6293: } else {
6294: if ($env{'request.course.sec'}) {
6295: $courseprivid.='/'.$env{'request.course.sec'};
6296: }
6297: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6298: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6299: return $2;
6300: }
6301: }
6302: }
6303: }
6304: }
6305:
6306: # Free bre to public access
6307:
6308: if ($priv eq 'bre') {
6309: my $copyright=&metadata($uri,'copyright');
6310: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6311: return 'F';
6312: }
6313: if ($copyright eq 'priv') {
6314: $uri=~/([^\/]+)\/([^\/]+)\//;
6315: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6316: return '';
6317: }
6318: }
6319: if ($copyright eq 'domain') {
6320: $uri=~/([^\/]+)\/([^\/]+)\//;
6321: unless (($env{'user.domain'} eq $1) ||
6322: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6323: return '';
6324: }
6325: }
6326: if ($env{'request.role'}=~ /li\.\//) {
6327: # Library role, so allow browsing of resources in this domain.
6328: return 'F';
6329: }
6330: if ($copyright eq 'custom') {
6331: unless (&customaccess($priv,$uri)) { return ''; }
6332: }
6333: }
6334: # Domain coordinator is trying to create a course
6335: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6336: # uri is the requested domain in this case.
6337: # comparison to 'request.role.domain' shows if the user has selected
6338: # a role of dc for the domain in question.
6339: return 'F' if ($uri eq $env{'request.role.domain'});
6340: }
6341:
6342: my $thisallowed='';
6343: my $statecond=0;
6344: my $courseprivid='';
6345:
6346: my $ownaccess;
6347: # Community Coordinator or Assistant Co-author browsing resource space.
6348: if (($priv eq 'bro') && ($env{'user.author'})) {
6349: if ($uri eq '') {
6350: $ownaccess = 1;
6351: } else {
6352: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6353: my $udom = $env{'user.domain'};
6354: my $uname = $env{'user.name'};
6355: if ($uri =~ m{^\Q$udom\E/?$}) {
6356: $ownaccess = 1;
6357: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6358: unless ($uri =~ m{\.\./}) {
6359: $ownaccess = 1;
6360: }
6361: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6362: my $now = time;
6363: if ($uri =~ m{^([^/]+)/?$}) {
6364: my $adom = $1;
6365: foreach my $key (keys(%env)) {
6366: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6367: my ($start,$end) = split('.',$env{$key});
6368: if (($now >= $start) && (!$end || $end < $now)) {
6369: $ownaccess = 1;
6370: last;
6371: }
6372: }
6373: }
6374: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6375: my $adom = $1;
6376: my $aname = $2;
6377: foreach my $role ('ca','aa') {
6378: if ($env{"user.role.$role./$adom/$aname"}) {
6379: my ($start,$end) =
6380: split('.',$env{"user.role.$role./$adom/$aname"});
6381: if (($now >= $start) && (!$end || $end < $now)) {
6382: $ownaccess = 1;
6383: last;
6384: }
6385: }
6386: }
6387: }
6388: }
6389: }
6390: }
6391: }
6392:
6393: # Course
6394:
6395: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6396: unless (($priv eq 'bro') && (!$ownaccess)) {
6397: $thisallowed.=$1;
6398: }
6399: }
6400:
6401: # Domain
6402:
6403: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6404: =~/\Q$priv\E\&([^\:]*)/) {
6405: unless (($priv eq 'bro') && (!$ownaccess)) {
6406: $thisallowed.=$1;
6407: }
6408: }
6409:
6410: # User who is not author or co-author might still be able to edit
6411: # resource of an author in the domain (e.g., if Domain Coordinator).
6412: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6413: (&allowed('mdc',$env{'request.course.id'}))) {
6414: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6415: $thisallowed.=$1;
6416: }
6417: }
6418:
6419: # Course: uri itself is a course
6420: my $courseuri=$uri;
6421: $courseuri=~s/\_(\d)/\/$1/;
6422: $courseuri=~s/^([^\/])/\/$1/;
6423:
6424: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6425: =~/\Q$priv\E\&([^\:]*)/) {
6426: unless (($priv eq 'bro') && (!$ownaccess)) {
6427: $thisallowed.=$1;
6428: }
6429: }
6430:
6431: # URI is an uploaded document for this course, default permissions don't matter
6432: # not allowing 'edit' access (editupload) to uploaded course docs
6433: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6434: $thisallowed='';
6435: my ($match)=&is_on_map($uri);
6436: if ($match) {
6437: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6438: =~/\Q$priv\E\&([^\:]*)/) {
6439: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6440: if (@blockers > 0) {
6441: $thisallowed = 'B';
6442: } else {
6443: $thisallowed.=$1;
6444: }
6445: }
6446: } else {
6447: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6448: if ($refuri) {
6449: if ($refuri =~ m|^/adm/|) {
6450: $thisallowed='F';
6451: } else {
6452: $refuri=&declutter($refuri);
6453: my ($match) = &is_on_map($refuri);
6454: if ($match) {
6455: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6456: if (@blockers > 0) {
6457: $thisallowed = 'B';
6458: } else {
6459: $thisallowed='F';
6460: }
6461: }
6462: }
6463: }
6464: }
6465: }
6466:
6467: if ($priv eq 'bre'
6468: && $thisallowed ne 'F'
6469: && $thisallowed ne '2'
6470: && &is_portfolio_url($uri)) {
6471: $thisallowed = &portfolio_access($uri);
6472: }
6473:
6474: # Full access at system, domain or course-wide level? Exit.
6475: if ($thisallowed=~/F/) {
6476: return 'F';
6477: }
6478:
6479: # If this is generating or modifying users, exit with special codes
6480:
6481: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6482: if (($priv eq 'cca') || ($priv eq 'caa')) {
6483: my ($audom,$auname)=split('/',$uri);
6484: # no author name given, so this just checks on the general right to make a co-author in this domain
6485: unless ($auname) { return $thisallowed; }
6486: # an author name is given, so we are about to actually make a co-author for a certain account
6487: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6488: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6489: ($audom ne $env{'request.role.domain'}))) { return ''; }
6490: }
6491: return $thisallowed;
6492: }
6493: #
6494: # Gathered so far: system, domain and course wide privileges
6495: #
6496: # Course: See if uri or referer is an individual resource that is part of
6497: # the course
6498:
6499: if ($env{'request.course.id'}) {
6500:
6501: $courseprivid=$env{'request.course.id'};
6502: if ($env{'request.course.sec'}) {
6503: $courseprivid.='/'.$env{'request.course.sec'};
6504: }
6505: $courseprivid=~s/\_/\//;
6506: my $checkreferer=1;
6507: my ($match,$cond)=&is_on_map($uri);
6508: if ($match) {
6509: $statecond=$cond;
6510: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6511: =~/\Q$priv\E\&([^\:]*)/) {
6512: my $value = $1;
6513: if ($priv eq 'bre') {
6514: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6515: if (@blockers > 0) {
6516: $thisallowed = 'B';
6517: } else {
6518: $thisallowed.=$value;
6519: }
6520: } else {
6521: $thisallowed.=$value;
6522: }
6523: $checkreferer=0;
6524: }
6525: }
6526:
6527: if ($checkreferer) {
6528: my $refuri=$env{'httpref.'.$orguri};
6529: unless ($refuri) {
6530: foreach my $key (keys(%env)) {
6531: if ($key=~/^httpref\..*\*/) {
6532: my $pattern=$key;
6533: $pattern=~s/^httpref\.\/res\///;
6534: $pattern=~s/\*/\[\^\/\]\+/g;
6535: $pattern=~s/\//\\\//g;
6536: if ($orguri=~/$pattern/) {
6537: $refuri=$env{$key};
6538: }
6539: }
6540: }
6541: }
6542:
6543: if ($refuri) {
6544: $refuri=&declutter($refuri);
6545: my ($match,$cond)=&is_on_map($refuri);
6546: if ($match) {
6547: my $refstatecond=$cond;
6548: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6549: =~/\Q$priv\E\&([^\:]*)/) {
6550: my $value = $1;
6551: if ($priv eq 'bre') {
6552: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6553: if (@blockers > 0) {
6554: $thisallowed = 'B';
6555: } else {
6556: $thisallowed.=$value;
6557: }
6558: } else {
6559: $thisallowed.=$value;
6560: }
6561: $uri=$refuri;
6562: $statecond=$refstatecond;
6563: }
6564: }
6565: }
6566: }
6567: }
6568:
6569: #
6570: # Gathered now: all privileges that could apply, and condition number
6571: #
6572: #
6573: # Full or no access?
6574: #
6575:
6576: if ($thisallowed=~/F/) {
6577: return 'F';
6578: }
6579:
6580: unless ($thisallowed) {
6581: return '';
6582: }
6583:
6584: # Restrictions exist, deal with them
6585: #
6586: # C:according to course preferences
6587: # R:according to resource settings
6588: # L:unless locked
6589: # X:according to user session state
6590: #
6591:
6592: # Possibly locked functionality, check all courses
6593: # Locks might take effect only after 10 minutes cache expiration for other
6594: # courses, and 2 minutes for current course
6595:
6596: my $envkey;
6597: if ($thisallowed=~/L/) {
6598: foreach $envkey (keys(%env)) {
6599: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6600: my $courseid=$2;
6601: my $roleid=$1.'.'.$2;
6602: $courseid=~s/^\///;
6603: my $expiretime=600;
6604: if ($env{'request.role'} eq $roleid) {
6605: $expiretime=120;
6606: }
6607: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6608: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6609: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6610: &coursedescription($courseid,{'freshen_cache' => 1});
6611: }
6612: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6613: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6614: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6615: &log($env{'user.domain'},$env{'user.name'},
6616: $env{'user.home'},
6617: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6618: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6619: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6620: return '';
6621: }
6622: }
6623: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6624: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6625: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6626: &log($env{'user.domain'},$env{'user.name'},
6627: $env{'user.home'},
6628: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6629: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6630: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6631: return '';
6632: }
6633: }
6634: }
6635: }
6636: }
6637:
6638: #
6639: # Rest of the restrictions depend on selected course
6640: #
6641:
6642: unless ($env{'request.course.id'}) {
6643: if ($thisallowed eq 'A') {
6644: return 'A';
6645: } elsif ($thisallowed eq 'B') {
6646: return 'B';
6647: } else {
6648: return '1';
6649: }
6650: }
6651:
6652: #
6653: # Now user is definitely in a course
6654: #
6655:
6656:
6657: # Course preferences
6658:
6659: if ($thisallowed=~/C/) {
6660: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6661: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6662: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6663: =~/\Q$rolecode\E/) {
6664: if (($priv ne 'pch') && ($priv ne 'plc')) {
6665: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6666: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6667: $env{'request.course.id'});
6668: }
6669: return '';
6670: }
6671:
6672: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6673: =~/\Q$unamedom\E/) {
6674: if (($priv ne 'pch') && ($priv ne 'plc')) {
6675: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6676: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6677: $env{'request.course.id'});
6678: }
6679: return '';
6680: }
6681: }
6682:
6683: # Resource preferences
6684:
6685: if ($thisallowed=~/R/) {
6686: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6687: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6688: if (($priv ne 'pch') && ($priv ne 'plc')) {
6689: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6690: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6691: }
6692: return '';
6693: }
6694: }
6695:
6696: # Restricted by state or randomout?
6697:
6698: if ($thisallowed=~/X/) {
6699: if ($env{'acc.randomout'}) {
6700: if (!$symb) { $symb=&symbread($uri,1); }
6701: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6702: return '';
6703: }
6704: }
6705: if (&condval($statecond)) {
6706: return '2';
6707: } else {
6708: return '';
6709: }
6710: }
6711:
6712: if ($thisallowed eq 'A') {
6713: return 'A';
6714: } elsif ($thisallowed eq 'B') {
6715: return 'B';
6716: }
6717: return 'F';
6718: }
6719:
6720: # ------------------------------------------- Check construction space access
6721:
6722: sub constructaccess {
6723: my ($url,$setpriv)=@_;
6724:
6725: # We do not allow editing of previous versions of files
6726: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6727:
6728: # Get username and domain from URL
6729: my ($ownername,$ownerdomain,$ownerhome);
6730:
6731: ($ownerdomain,$ownername) =
6732: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6733:
6734: # The URL does not really point to any authorspace, forget it
6735: unless (($ownername) && ($ownerdomain)) { return ''; }
6736:
6737: # Now we need to see if the user has access to the authorspace of
6738: # $ownername at $ownerdomain
6739:
6740: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6741: # Real author for this?
6742: $ownerhome = $env{'user.home'};
6743: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6744: return ($ownername,$ownerdomain,$ownerhome);
6745: }
6746: } else {
6747: # Co-author for this?
6748: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6749: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6750: $ownerhome = &homeserver($ownername,$ownerdomain);
6751: return ($ownername,$ownerdomain,$ownerhome);
6752: }
6753: }
6754:
6755: # We don't have any access right now. If we are not possibly going to do anything about this,
6756: # we might as well leave
6757: unless ($setpriv) { return ''; }
6758:
6759: # Backdoor access?
6760: my $allowed=&allowed('eco',$ownerdomain);
6761: # Nope
6762: unless ($allowed) { return ''; }
6763: # Looks like we may have access, but could be locked by the owner of the construction space
6764: if ($allowed eq 'U') {
6765: my %blocked=&get('environment',['domcoord.author'],
6766: $ownerdomain,$ownername);
6767: # Is blocked by owner
6768: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
6769: }
6770: if (($allowed eq 'F') || ($allowed eq 'U')) {
6771: # Grant temporary access
6772: my $then=$env{'user.login.time'};
6773: my $update==$env{'user.update.time'};
6774: if (!$update) { $update = $then; }
6775: my $refresh=$env{'user.refresh.time'};
6776: if (!$refresh) { $refresh = $update; }
6777: my $now = time;
6778: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
6779: $now,'ca','constructaccess');
6780: $ownerhome = &homeserver($ownername,$ownerdomain);
6781: return($ownername,$ownerdomain,$ownerhome);
6782: }
6783: # No business here
6784: return '';
6785: }
6786:
6787: sub get_comm_blocks {
6788: my ($cdom,$cnum) = @_;
6789: if ($cdom eq '' || $cnum eq '') {
6790: return unless ($env{'request.course.id'});
6791: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6792: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6793: }
6794: my %commblocks;
6795: my $hashid=$cdom.'_'.$cnum;
6796: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6797: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6798: %commblocks = %{$blocksref};
6799: } else {
6800: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6801: my $cachetime = 600;
6802: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6803: }
6804: return %commblocks;
6805: }
6806:
6807: sub has_comm_blocking {
6808: my ($priv,$symb,$uri,$blocks) = @_;
6809: return unless ($env{'request.course.id'});
6810: return unless ($priv eq 'bre');
6811: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6812: my %commblocks;
6813: if (ref($blocks) eq 'HASH') {
6814: %commblocks = %{$blocks};
6815: } else {
6816: %commblocks = &get_comm_blocks();
6817: }
6818: return unless (keys(%commblocks) > 0);
6819: if (!$symb) { $symb=&symbread($uri,1); }
6820: my ($map,$resid,undef)=&decode_symb($symb);
6821: my %tocheck = (
6822: maps => $map,
6823: resources => $symb,
6824: );
6825: my @blockers;
6826: my $now = time;
6827: my $navmap = Apache::lonnavmaps::navmap->new();
6828: foreach my $block (keys(%commblocks)) {
6829: if ($block =~ /^(\d+)____(\d+)$/) {
6830: my ($start,$end) = ($1,$2);
6831: if ($start <= $now && $end >= $now) {
6832: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6833: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6834: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6835: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6836: unless (grep(/^\Q$block\E$/,@blockers)) {
6837: push(@blockers,$block);
6838: }
6839: }
6840: }
6841: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6842: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6843: unless (grep(/^\Q$block\E$/,@blockers)) {
6844: push(@blockers,$block);
6845: }
6846: }
6847: }
6848: }
6849: }
6850: }
6851: } elsif ($block =~ /^firstaccess____(.+)$/) {
6852: my $item = $1;
6853: my @to_test;
6854: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6855: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6856: my $check_interval;
6857: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6858: my @interval;
6859: my $type = 'map';
6860: if ($item eq 'course') {
6861: $type = 'course';
6862: @interval=&EXT("resource.0.interval");
6863: } else {
6864: if ($item =~ /___\d+___/) {
6865: $type = 'resource';
6866: @interval=&EXT("resource.0.interval",$item);
6867: if (ref($navmap)) {
6868: my $res = $navmap->getBySymb($item);
6869: push(@to_test,$res);
6870: }
6871: } else {
6872: my $mapsymb = &symbread($item,1);
6873: if ($mapsymb) {
6874: if (ref($navmap)) {
6875: my $mapres = $navmap->getBySymb($mapsymb);
6876: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6877: foreach my $res (@to_test) {
6878: my $symb = $res->symb();
6879: next if ($symb eq $mapsymb);
6880: if ($symb ne '') {
6881: @interval=&EXT("resource.0.interval",$symb);
6882: last;
6883: }
6884: }
6885: }
6886: }
6887: }
6888: }
6889: if ($interval[0] =~ /\d+/) {
6890: my $first_access;
6891: if ($type eq 'resource') {
6892: $first_access=&get_first_access($interval[1],$item);
6893: } elsif ($type eq 'map') {
6894: $first_access=&get_first_access($interval[1],undef,$item);
6895: } else {
6896: $first_access=&get_first_access($interval[1]);
6897: }
6898: if ($first_access) {
6899: my $timesup = $first_access+$interval[0];
6900: if ($timesup > $now) {
6901: foreach my $res (@to_test) {
6902: if ($res->is_problem()) {
6903: if ($res->completable()) {
6904: unless (grep(/^\Q$block\E$/,@blockers)) {
6905: push(@blockers,$block);
6906: }
6907: last;
6908: }
6909: }
6910: }
6911: }
6912: }
6913: }
6914: }
6915: }
6916: }
6917: }
6918: }
6919: return @blockers;
6920: }
6921:
6922: sub check_docs_block {
6923: my ($docsblock,$tocheck) =@_;
6924: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6925: return;
6926: }
6927: if (ref($docsblock->{'maps'}) eq 'HASH') {
6928: if ($tocheck->{'maps'}) {
6929: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6930: return 1;
6931: }
6932: }
6933: }
6934: if (ref($docsblock->{'resources'}) eq 'HASH') {
6935: if ($tocheck->{'resources'}) {
6936: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6937: return 1;
6938: }
6939: }
6940: }
6941: return;
6942: }
6943:
6944: #
6945: # Removes the versino from a URI and
6946: # splits it in to its filename and path to the filename.
6947: # Seems like File::Basename could have done this more clearly.
6948: # Parameters:
6949: # $uri - input URI
6950: # Returns:
6951: # Two element list consisting of
6952: # $pathname - the URI up to and excluding the trailing /
6953: # $filename - The part of the URI following the last /
6954: # NOTE:
6955: # Another realization of this is simply:
6956: # use File::Basename;
6957: # ...
6958: # $uri = shift;
6959: # $filename = basename($uri);
6960: # $path = dirname($uri);
6961: # return ($filename, $path);
6962: #
6963: # The implementation below is probably faster however.
6964: #
6965: sub split_uri_for_cond {
6966: my $uri=&deversion(&declutter(shift));
6967: my @uriparts=split(/\//,$uri);
6968: my $filename=pop(@uriparts);
6969: my $pathname=join('/',@uriparts);
6970: return ($pathname,$filename);
6971: }
6972: # --------------------------------------------------- Is a resource on the map?
6973:
6974: sub is_on_map {
6975: my ($pathname,$filename) = &split_uri_for_cond(shift);
6976: #Trying to find the conditional for the file
6977: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6978: /\&\Q$filename\E\:([\d\|]+)\&/);
6979: if ($match) {
6980: return (1,$1);
6981: } else {
6982: return (0,0);
6983: }
6984: }
6985:
6986: # --------------------------------------------------------- Get symb from alias
6987:
6988: sub get_symb_from_alias {
6989: my $symb=shift;
6990: my ($map,$resid,$url)=&decode_symb($symb);
6991: # Already is a symb
6992: if ($url) { return $symb; }
6993: # Must be an alias
6994: my $aliassymb='';
6995: my %bighash;
6996: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6997: &GDBM_READER(),0640)) {
6998: my $rid=$bighash{'mapalias_'.$symb};
6999: if ($rid) {
7000: my ($mapid,$resid)=split(/\./,$rid);
7001: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7002: $resid,$bighash{'src_'.$rid});
7003: }
7004: untie %bighash;
7005: }
7006: return $aliassymb;
7007: }
7008:
7009: # ----------------------------------------------------------------- Define Role
7010:
7011: sub definerole {
7012: if (allowed('mcr','/')) {
7013: my ($rolename,$sysrole,$domrole,$courole)=@_;
7014: foreach my $role (split(':',$sysrole)) {
7015: my ($crole,$cqual)=split(/\&/,$role);
7016: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7017: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7018: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7019: return "refused:s:$crole&$cqual";
7020: }
7021: }
7022: }
7023: foreach my $role (split(':',$domrole)) {
7024: my ($crole,$cqual)=split(/\&/,$role);
7025: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7026: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7027: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7028: return "refused:d:$crole&$cqual";
7029: }
7030: }
7031: }
7032: foreach my $role (split(':',$courole)) {
7033: my ($crole,$cqual)=split(/\&/,$role);
7034: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7035: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7036: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7037: return "refused:c:$crole&$cqual";
7038: }
7039: }
7040: }
7041: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7042: "$env{'user.domain'}:$env{'user.name'}:".
7043: "rolesdef_$rolename=".
7044: escape($sysrole.'_'.$domrole.'_'.$courole);
7045: return reply($command,$env{'user.home'});
7046: } else {
7047: return 'refused';
7048: }
7049: }
7050:
7051: # ---------------- Make a metadata query against the network of library servers
7052:
7053: sub metadata_query {
7054: my ($query,$custom,$customshow,$server_array)=@_;
7055: my %rhash;
7056: my %libserv = &all_library();
7057: my @server_list = (defined($server_array) ? @$server_array
7058: : keys(%libserv) );
7059: for my $server (@server_list) {
7060: unless ($custom or $customshow) {
7061: my $reply=&reply("querysend:".&escape($query),$server);
7062: $rhash{$server}=$reply;
7063: }
7064: else {
7065: my $reply=&reply("querysend:".&escape($query).':'.
7066: &escape($custom).':'.&escape($customshow),
7067: $server);
7068: $rhash{$server}=$reply;
7069: }
7070: }
7071: return \%rhash;
7072: }
7073:
7074: # ----------------------------------------- Send log queries and wait for reply
7075:
7076: sub log_query {
7077: my ($uname,$udom,$query,%filters)=@_;
7078: my $uhome=&homeserver($uname,$udom);
7079: if ($uhome eq 'no_host') { return 'error: no_host'; }
7080: my $uhost=&hostname($uhome);
7081: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7082: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7083: $uhome);
7084: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7085: return get_query_reply($queryid);
7086: }
7087:
7088: # -------------------------- Update MySQL table for portfolio file
7089:
7090: sub update_portfolio_table {
7091: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7092: if ($group ne '') {
7093: $file_name =~s /^\Q$group\E//;
7094: }
7095: my $homeserver = &homeserver($uname,$udom);
7096: my $queryid=
7097: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7098: ':'.&escape($file_name).':'.$action,$homeserver);
7099: my $reply = &get_query_reply($queryid);
7100: return $reply;
7101: }
7102:
7103: # -------------------------- Update MySQL allusers table
7104:
7105: sub update_allusers_table {
7106: my ($uname,$udom,$names) = @_;
7107: my $homeserver = &homeserver($uname,$udom);
7108: my $queryid=
7109: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7110: 'lastname='.&escape($names->{'lastname'}).'%%'.
7111: 'firstname='.&escape($names->{'firstname'}).'%%'.
7112: 'middlename='.&escape($names->{'middlename'}).'%%'.
7113: 'generation='.&escape($names->{'generation'}).'%%'.
7114: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7115: 'id='.&escape($names->{'id'}),$homeserver);
7116: return;
7117: }
7118:
7119: # ------- Request retrieval of institutional classlists for course(s)
7120:
7121: sub fetch_enrollment_query {
7122: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7123: my $homeserver;
7124: my $maxtries = 1;
7125: if ($context eq 'automated') {
7126: $homeserver = $perlvar{'lonHostID'};
7127: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7128: } else {
7129: $homeserver = &homeserver($cnum,$dom);
7130: }
7131: my $host=&hostname($homeserver);
7132: my $cmd = '';
7133: foreach my $affiliate (keys(%{$affiliatesref})) {
7134: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7135: }
7136: $cmd =~ s/%%$//;
7137: $cmd = &escape($cmd);
7138: my $query = 'fetchenrollment';
7139: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7140: unless ($queryid=~/^\Q$host\E\_/) {
7141: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7142: return 'error: '.$queryid;
7143: }
7144: my $reply = &get_query_reply($queryid);
7145: my $tries = 1;
7146: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7147: $reply = &get_query_reply($queryid);
7148: $tries ++;
7149: }
7150: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7151: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7152: } else {
7153: my @responses = split(/:/,$reply);
7154: if ($homeserver eq $perlvar{'lonHostID'}) {
7155: foreach my $line (@responses) {
7156: my ($key,$value) = split(/=/,$line,2);
7157: $$replyref{$key} = $value;
7158: }
7159: } else {
7160: my $pathname = LONCAPA::tempdir();
7161: foreach my $line (@responses) {
7162: my ($key,$value) = split(/=/,$line);
7163: $$replyref{$key} = $value;
7164: if ($value > 0) {
7165: foreach my $item (@{$$affiliatesref{$key}}) {
7166: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7167: my $destname = $pathname.'/'.$filename;
7168: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7169: if ($xml_classlist =~ /^error/) {
7170: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7171: } else {
7172: if ( open(FILE,">$destname") ) {
7173: print FILE &unescape($xml_classlist);
7174: close(FILE);
7175: } else {
7176: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7177: }
7178: }
7179: }
7180: }
7181: }
7182: }
7183: return 'ok';
7184: }
7185: return 'error';
7186: }
7187:
7188: sub get_query_reply {
7189: my $queryid=shift;
7190: my $replyfile=LONCAPA::tempdir().$queryid;
7191: my $reply='';
7192: for (1..100) {
7193: sleep 2;
7194: if (-e $replyfile.'.end') {
7195: if (open(my $fh,$replyfile)) {
7196: $reply = join('',<$fh>);
7197: close($fh);
7198: } else { return 'error: reply_file_error'; }
7199: return &unescape($reply);
7200: }
7201: }
7202: return 'timeout:'.$queryid;
7203: }
7204:
7205: sub courselog_query {
7206: #
7207: # possible filters:
7208: # url: url or symb
7209: # username
7210: # domain
7211: # action: view, submit, grade
7212: # start: timestamp
7213: # end: timestamp
7214: #
7215: my (%filters)=@_;
7216: unless ($env{'request.course.id'}) { return 'no_course'; }
7217: if ($filters{'url'}) {
7218: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7219: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7220: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7221: }
7222: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7223: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7224: return &log_query($cname,$cdom,'courselog',%filters);
7225: }
7226:
7227: sub userlog_query {
7228: #
7229: # possible filters:
7230: # action: log check role
7231: # start: timestamp
7232: # end: timestamp
7233: #
7234: my ($uname,$udom,%filters)=@_;
7235: return &log_query($uname,$udom,'userlog',%filters);
7236: }
7237:
7238: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7239:
7240: sub auto_run {
7241: my ($cnum,$cdom) = @_;
7242: my $response = 0;
7243: my $settings;
7244: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7245: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7246: $settings = $domconfig{'autoenroll'};
7247: if ($settings->{'run'} eq '1') {
7248: $response = 1;
7249: }
7250: } else {
7251: my $homeserver;
7252: if (&is_course($cdom,$cnum)) {
7253: $homeserver = &homeserver($cnum,$cdom);
7254: } else {
7255: $homeserver = &domain($cdom,'primary');
7256: }
7257: if ($homeserver ne 'no_host') {
7258: $response = &reply('autorun:'.$cdom,$homeserver);
7259: }
7260: }
7261: return $response;
7262: }
7263:
7264: sub auto_get_sections {
7265: my ($cnum,$cdom,$inst_coursecode) = @_;
7266: my $homeserver;
7267: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7268: $homeserver = &homeserver($cnum,$cdom);
7269: }
7270: if (!defined($homeserver)) {
7271: if ($cdom =~ /^$match_domain$/) {
7272: $homeserver = &domain($cdom,'primary');
7273: }
7274: }
7275: my @secs;
7276: if (defined($homeserver)) {
7277: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7278: unless ($response eq 'refused') {
7279: @secs = split(/:/,$response);
7280: }
7281: }
7282: return @secs;
7283: }
7284:
7285: sub auto_new_course {
7286: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7287: my $homeserver = &homeserver($cnum,$cdom);
7288: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7289: return $response;
7290: }
7291:
7292: sub auto_validate_courseID {
7293: my ($cnum,$cdom,$inst_course_id) = @_;
7294: my $homeserver = &homeserver($cnum,$cdom);
7295: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7296: return $response;
7297: }
7298:
7299: sub auto_validate_instcode {
7300: my ($cnum,$cdom,$instcode,$owner) = @_;
7301: my ($homeserver,$response);
7302: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7303: $homeserver = &homeserver($cnum,$cdom);
7304: }
7305: if (!defined($homeserver)) {
7306: if ($cdom =~ /^$match_domain$/) {
7307: $homeserver = &domain($cdom,'primary');
7308: }
7309: }
7310: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7311: &escape($instcode).':'.&escape($owner),$homeserver));
7312: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
7313: return ($outcome,$description);
7314: }
7315:
7316: sub auto_create_password {
7317: my ($cnum,$cdom,$authparam,$udom) = @_;
7318: my ($homeserver,$response);
7319: my $create_passwd = 0;
7320: my $authchk = '';
7321: if ($udom =~ /^$match_domain$/) {
7322: $homeserver = &domain($udom,'primary');
7323: }
7324: if ($homeserver eq '') {
7325: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7326: $homeserver = &homeserver($cnum,$cdom);
7327: }
7328: }
7329: if ($homeserver eq '') {
7330: $authchk = 'nodomain';
7331: } else {
7332: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7333: if ($response eq 'refused') {
7334: $authchk = 'refused';
7335: } else {
7336: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7337: }
7338: }
7339: return ($authparam,$create_passwd,$authchk);
7340: }
7341:
7342: sub auto_photo_permission {
7343: my ($cnum,$cdom,$students) = @_;
7344: my $homeserver = &homeserver($cnum,$cdom);
7345: my ($outcome,$perm_reqd,$conditions) =
7346: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7347: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7348: return (undef,undef);
7349: }
7350: return ($outcome,$perm_reqd,$conditions);
7351: }
7352:
7353: sub auto_checkphotos {
7354: my ($uname,$udom,$pid) = @_;
7355: my $homeserver = &homeserver($uname,$udom);
7356: my ($result,$resulttype);
7357: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7358: &escape($uname).':'.&escape($pid),
7359: $homeserver));
7360: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7361: return (undef,undef);
7362: }
7363: if ($outcome) {
7364: ($result,$resulttype) = split(/:/,$outcome);
7365: }
7366: return ($result,$resulttype);
7367: }
7368:
7369: sub auto_photochoice {
7370: my ($cnum,$cdom) = @_;
7371: my $homeserver = &homeserver($cnum,$cdom);
7372: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7373: &escape($cdom),
7374: $homeserver)));
7375: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7376: return (undef,undef);
7377: }
7378: return ($update,$comment);
7379: }
7380:
7381: sub auto_photoupdate {
7382: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7383: my $homeserver = &homeserver($cnum,$dom);
7384: my $host=&hostname($homeserver);
7385: my $cmd = '';
7386: my $maxtries = 1;
7387: foreach my $affiliate (keys(%{$affiliatesref})) {
7388: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7389: }
7390: $cmd =~ s/%%$//;
7391: $cmd = &escape($cmd);
7392: my $query = 'institutionalphotos';
7393: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7394: unless ($queryid=~/^\Q$host\E\_/) {
7395: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7396: return 'error: '.$queryid;
7397: }
7398: my $reply = &get_query_reply($queryid);
7399: my $tries = 1;
7400: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7401: $reply = &get_query_reply($queryid);
7402: $tries ++;
7403: }
7404: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7405: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7406: } else {
7407: my @responses = split(/:/,$reply);
7408: my $outcome = shift(@responses);
7409: foreach my $item (@responses) {
7410: my ($key,$value) = split(/=/,$item);
7411: $$photo{$key} = $value;
7412: }
7413: return $outcome;
7414: }
7415: return 'error';
7416: }
7417:
7418: sub auto_instcode_format {
7419: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7420: $cat_order) = @_;
7421: my $courses = '';
7422: my @homeservers;
7423: if ($caller eq 'global') {
7424: my %servers = &get_servers($codedom,'library');
7425: foreach my $tryserver (keys(%servers)) {
7426: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7427: push(@homeservers,$tryserver);
7428: }
7429: }
7430: } elsif ($caller eq 'requests') {
7431: if ($codedom =~ /^$match_domain$/) {
7432: my $chome = &domain($codedom,'primary');
7433: unless ($chome eq 'no_host') {
7434: push(@homeservers,$chome);
7435: }
7436: }
7437: } else {
7438: push(@homeservers,&homeserver($caller,$codedom));
7439: }
7440: foreach my $code (keys(%{$instcodes})) {
7441: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7442: }
7443: chop($courses);
7444: my $ok_response = 0;
7445: my $response;
7446: while (@homeservers > 0 && $ok_response == 0) {
7447: my $server = shift(@homeservers);
7448: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7449: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7450: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7451: split(/:/,$response);
7452: %{$codes} = (%{$codes},&str2hash($codes_str));
7453: push(@{$codetitles},&str2array($codetitles_str));
7454: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7455: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7456: $ok_response = 1;
7457: }
7458: }
7459: if ($ok_response) {
7460: return 'ok';
7461: } else {
7462: return $response;
7463: }
7464: }
7465:
7466: sub auto_instcode_defaults {
7467: my ($domain,$returnhash,$code_order) = @_;
7468: my @homeservers;
7469:
7470: my %servers = &get_servers($domain,'library');
7471: foreach my $tryserver (keys(%servers)) {
7472: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7473: push(@homeservers,$tryserver);
7474: }
7475: }
7476:
7477: my $response;
7478: foreach my $server (@homeservers) {
7479: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7480: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7481:
7482: foreach my $pair (split(/\&/,$response)) {
7483: my ($name,$value)=split(/\=/,$pair);
7484: if ($name eq 'code_order') {
7485: @{$code_order} = split(/\&/,&unescape($value));
7486: } else {
7487: $returnhash->{&unescape($name)}=&unescape($value);
7488: }
7489: }
7490: return 'ok';
7491: }
7492:
7493: return $response;
7494: }
7495:
7496: sub auto_possible_instcodes {
7497: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7498: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7499: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7500: return;
7501: }
7502: my (@homeservers,$uhome);
7503: if (defined(&domain($domain,'primary'))) {
7504: $uhome=&domain($domain,'primary');
7505: push(@homeservers,&domain($domain,'primary'));
7506: } else {
7507: my %servers = &get_servers($domain,'library');
7508: foreach my $tryserver (keys(%servers)) {
7509: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7510: push(@homeservers,$tryserver);
7511: }
7512: }
7513: }
7514: my $response;
7515: foreach my $server (@homeservers) {
7516: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7517: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7518: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7519: split(':',$response);
7520: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7521: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7522: foreach my $item (split('&',$cat_title)) {
7523: my ($name,$value)=split('=',$item);
7524: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7525: }
7526: foreach my $item (split('&',$cat_order)) {
7527: my ($name,$value)=split('=',$item);
7528: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7529: }
7530: return 'ok';
7531: }
7532: return $response;
7533: }
7534:
7535: sub auto_courserequest_checks {
7536: my ($dom) = @_;
7537: my ($homeserver,%validations);
7538: if ($dom =~ /^$match_domain$/) {
7539: $homeserver = &domain($dom,'primary');
7540: }
7541: unless ($homeserver eq 'no_host') {
7542: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7543: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7544: my @items = split(/&/,$response);
7545: foreach my $item (@items) {
7546: my ($key,$value) = split('=',$item);
7547: $validations{&unescape($key)} = &thaw_unescape($value);
7548: }
7549: }
7550: }
7551: return %validations;
7552: }
7553:
7554: sub auto_courserequest_validation {
7555: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7556: my ($homeserver,$response);
7557: if ($dom =~ /^$match_domain$/) {
7558: $homeserver = &domain($dom,'primary');
7559: }
7560: unless ($homeserver eq 'no_host') {
7561:
7562: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7563: ':'.&escape($crstype).':'.&escape($inststatuslist).
7564: ':'.&escape($instcode).':'.&escape($instseclist),
7565: $homeserver));
7566: }
7567: return $response;
7568: }
7569:
7570: sub auto_validate_class_sec {
7571: my ($cdom,$cnum,$owners,$inst_class) = @_;
7572: my $homeserver = &homeserver($cnum,$cdom);
7573: my $ownerlist;
7574: if (ref($owners) eq 'ARRAY') {
7575: $ownerlist = join(',',@{$owners});
7576: } else {
7577: $ownerlist = $owners;
7578: }
7579: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7580: &escape($ownerlist).':'.$cdom,$homeserver);
7581: return $response;
7582: }
7583:
7584: # ------------------------------------------------------- Course Group routines
7585:
7586: sub get_coursegroups {
7587: my ($cdom,$cnum,$group,$namespace) = @_;
7588: return(&dump($namespace,$cdom,$cnum,$group));
7589: }
7590:
7591: sub modify_coursegroup {
7592: my ($cdom,$cnum,$groupsettings) = @_;
7593: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7594: }
7595:
7596: sub toggle_coursegroup_status {
7597: my ($cdom,$cnum,$group,$action) = @_;
7598: my ($from_namespace,$to_namespace);
7599: if ($action eq 'delete') {
7600: $from_namespace = 'coursegroups';
7601: $to_namespace = 'deleted_groups';
7602: } else {
7603: $from_namespace = 'deleted_groups';
7604: $to_namespace = 'coursegroups';
7605: }
7606: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7607: if (my $tmp = &error(%curr_group)) {
7608: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7609: return ('read error',$tmp);
7610: } else {
7611: my %savedsettings = %curr_group;
7612: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7613: my $deloutcome;
7614: if ($result eq 'ok') {
7615: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7616: } else {
7617: return ('write error',$result);
7618: }
7619: if ($deloutcome eq 'ok') {
7620: return 'ok';
7621: } else {
7622: return ('delete error',$deloutcome);
7623: }
7624: }
7625: }
7626:
7627: sub modify_group_roles {
7628: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7629: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7630: my $role = 'gr/'.&escape($userprivs);
7631: my ($uname,$udom) = split(/:/,$user);
7632: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7633: if ($result eq 'ok') {
7634: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7635: }
7636: return $result;
7637: }
7638:
7639: sub modify_coursegroup_membership {
7640: my ($cdom,$cnum,$membership) = @_;
7641: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7642: return $result;
7643: }
7644:
7645: sub get_active_groups {
7646: my ($udom,$uname,$cdom,$cnum) = @_;
7647: my $now = time;
7648: my %groups = ();
7649: foreach my $key (keys(%env)) {
7650: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7651: my ($start,$end) = split(/\./,$env{$key});
7652: if (($end!=0) && ($end<$now)) { next; }
7653: if (($start!=0) && ($start>$now)) { next; }
7654: if ($1 eq $cdom && $2 eq $cnum) {
7655: $groups{$3} = $env{$key} ;
7656: }
7657: }
7658: }
7659: return %groups;
7660: }
7661:
7662: sub get_group_membership {
7663: my ($cdom,$cnum,$group) = @_;
7664: return(&dump('groupmembership',$cdom,$cnum,$group));
7665: }
7666:
7667: sub get_users_groups {
7668: my ($udom,$uname,$courseid) = @_;
7669: my @usersgroups;
7670: my $cachetime=1800;
7671:
7672: my $hashid="$udom:$uname:$courseid";
7673: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7674: if (defined($cached)) {
7675: @usersgroups = split(/:/,$grouplist);
7676: } else {
7677: $grouplist = '';
7678: my $courseurl = &courseid_to_courseurl($courseid);
7679: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7680: my $access_end = $env{'course.'.$courseid.
7681: '.default_enrollment_end_date'};
7682: my $now = time;
7683: foreach my $key (keys(%roleshash)) {
7684: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7685: my $group = $1;
7686: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7687: my $start = $2;
7688: my $end = $1;
7689: if ($start == -1) { next; } # deleted from group
7690: if (($start!=0) && ($start>$now)) { next; }
7691: if (($end!=0) && ($end<$now)) {
7692: if ($access_end && $access_end < $now) {
7693: if ($access_end - $end < 86400) {
7694: push(@usersgroups,$group);
7695: }
7696: }
7697: next;
7698: }
7699: push(@usersgroups,$group);
7700: }
7701: }
7702: }
7703: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7704: $grouplist = join(':',@usersgroups);
7705: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7706: }
7707: return @usersgroups;
7708: }
7709:
7710: sub devalidate_getgroups_cache {
7711: my ($udom,$uname,$cdom,$cnum)=@_;
7712: my $courseid = $cdom.'_'.$cnum;
7713:
7714: my $hashid="$udom:$uname:$courseid";
7715: &devalidate_cache_new('getgroups',$hashid);
7716: }
7717:
7718: # ------------------------------------------------------------------ Plain Text
7719:
7720: sub plaintext {
7721: my ($short,$type,$cid,$forcedefault) = @_;
7722: if ($short =~ m{^cr/}) {
7723: return (split('/',$short))[-1];
7724: }
7725: if (!defined($cid)) {
7726: $cid = $env{'request.course.id'};
7727: }
7728: my %rolenames = (
7729: Course => 'std',
7730: Community => 'alt1',
7731: );
7732: if ($cid ne '') {
7733: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7734: unless ($forcedefault) {
7735: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7736: &Apache::lonlocal::mt_escape(\$roletext);
7737: return &Apache::lonlocal::mt($roletext);
7738: }
7739: }
7740: }
7741: if ((defined($type)) && (defined($rolenames{$type})) &&
7742: (defined($rolenames{$type})) &&
7743: (defined($prp{$short}{$rolenames{$type}}))) {
7744: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7745: } elsif ($cid ne '') {
7746: my $crstype = $env{'course.'.$cid.'.type'};
7747: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7748: (defined($prp{$short}{$rolenames{$crstype}}))) {
7749: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7750: }
7751: }
7752: return &Apache::lonlocal::mt($prp{$short}{'std'});
7753: }
7754:
7755: # ----------------------------------------------------------------- Assign Role
7756:
7757: sub assignrole {
7758: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7759: $context)=@_;
7760: my $mrole;
7761: if ($role =~ /^cr\//) {
7762: my $cwosec=$url;
7763: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7764: unless (&allowed('ccr',$cwosec)) {
7765: my $refused = 1;
7766: if ($context eq 'requestcourses') {
7767: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7768: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7769: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7770: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7771: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7772: if ($crsenv{'internal.courseowner'} eq
7773: $env{'user.name'}.':'.$env{'user.domain'}) {
7774: $refused = '';
7775: }
7776: }
7777: }
7778: }
7779: }
7780: if ($refused) {
7781: &logthis('Refused custom assignrole: '.
7782: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7783: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7784: return 'refused';
7785: }
7786: }
7787: $mrole='cr';
7788: } elsif ($role =~ /^gr\//) {
7789: my $cwogrp=$url;
7790: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7791: unless (&allowed('mdg',$cwogrp)) {
7792: &logthis('Refused group assignrole: '.
7793: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7794: $env{'user.name'}.' at '.$env{'user.domain'});
7795: return 'refused';
7796: }
7797: $mrole='gr';
7798: } else {
7799: my $cwosec=$url;
7800: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7801: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7802: my $refused;
7803: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7804: if (!(&allowed('c'.$role,$url))) {
7805: $refused = 1;
7806: }
7807: } else {
7808: $refused = 1;
7809: }
7810: if ($refused) {
7811: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7812: if (!$selfenroll && $context eq 'course') {
7813: my %crsenv;
7814: if ($role eq 'cc' || $role eq 'co') {
7815: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7816: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7817: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7818: if ($crsenv{'internal.courseowner'} eq
7819: $env{'user.name'}.':'.$env{'user.domain'}) {
7820: $refused = '';
7821: }
7822: }
7823: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7824: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7825: if ($crsenv{'internal.courseowner'} eq
7826: $env{'user.name'}.':'.$env{'user.domain'}) {
7827: $refused = '';
7828: }
7829: }
7830: }
7831: }
7832: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7833: $refused = '';
7834: } elsif ($context eq 'requestcourses') {
7835: my @possroles = ('st','ta','ep','in','cc','co');
7836: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7837: my $wrongcc;
7838: if ($cnum =~ /^$match_community$/) {
7839: $wrongcc = 1 if ($role eq 'cc');
7840: } else {
7841: $wrongcc = 1 if ($role eq 'co');
7842: }
7843: unless ($wrongcc) {
7844: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7845: if ($crsenv{'internal.courseowner'} eq
7846: $env{'user.name'}.':'.$env{'user.domain'}) {
7847: $refused = '';
7848: }
7849: }
7850: }
7851: } elsif ($context eq 'requestauthor') {
7852: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7853: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
7854: if ($env{'environment.requestauthor'} eq 'automatic') {
7855: $refused = '';
7856: } else {
7857: my %domdefaults = &get_domain_defaults($udom);
7858: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
7859: my $checkbystatus;
7860: if ($env{'user.adv'}) {
7861: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
7862: if ($disposition eq 'automatic') {
7863: $refused = '';
7864: } elsif ($disposition eq '') {
7865: $checkbystatus = 1;
7866: }
7867: } else {
7868: $checkbystatus = 1;
7869: }
7870: if ($checkbystatus) {
7871: if ($env{'environment.inststatus'}) {
7872: my @inststatuses = split(/,/,$env{'environment.inststatus'});
7873: foreach my $type (@inststatuses) {
7874: if (($type ne '') &&
7875: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
7876: $refused = '';
7877: }
7878: }
7879: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
7880: $refused = '';
7881: }
7882: }
7883: }
7884: }
7885: }
7886: }
7887: if ($refused) {
7888: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7889: ' '.$role.' '.$end.' '.$start.' by '.
7890: $env{'user.name'}.' at '.$env{'user.domain'});
7891: return 'refused';
7892: }
7893: }
7894: } elsif ($role eq 'au') {
7895: if ($url ne '/'.$udom.'/') {
7896: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7897: ' to assign author role for '.$uname.':'.$udom.
7898: ' in domain: '.$url.' refused (wrong domain).');
7899: return 'refused';
7900: }
7901: }
7902: $mrole=$role;
7903: }
7904: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7905: "$udom:$uname:$url".'_'."$mrole=$role";
7906: if ($end) { $command.='_'.$end; }
7907: if ($start) {
7908: if ($end) {
7909: $command.='_'.$start;
7910: } else {
7911: $command.='_0_'.$start;
7912: }
7913: }
7914: my $origstart = $start;
7915: my $origend = $end;
7916: my $delflag;
7917: # actually delete
7918: if ($deleteflag) {
7919: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7920: # modify command to delete the role
7921: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7922: "$udom:$uname:$url".'_'."$mrole";
7923: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7924: # set start and finish to negative values for userrolelog
7925: $start=-1;
7926: $end=-1;
7927: $delflag = 1;
7928: }
7929: }
7930: # send command
7931: my $answer=&reply($command,&homeserver($uname,$udom));
7932: # log new user role if status is ok
7933: if ($answer eq 'ok') {
7934: &userrolelog($role,$uname,$udom,$url,$start,$end);
7935: # for course roles, perform group memberships changes triggered by role change.
7936: unless ($role =~ /^gr/) {
7937: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7938: $origstart,$selfenroll,$context);
7939: }
7940: if (($role eq 'cc') || ($role eq 'in') ||
7941: ($role eq 'ep') || ($role eq 'ad') ||
7942: ($role eq 'ta') || ($role eq 'st') ||
7943: ($role=~/^cr/) || ($role eq 'gr') ||
7944: ($role eq 'co')) {
7945: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7946: $selfenroll,$context);
7947: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
7948: ($role eq 'au') || ($role eq 'dc')) {
7949: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7950: $context);
7951: } elsif (($role eq 'ca') || ($role eq 'aa')) {
7952: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
7953: $context);
7954: }
7955: if ($role eq 'cc') {
7956: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7957: }
7958: }
7959: return $answer;
7960: }
7961:
7962: sub autoupdate_coowners {
7963: my ($url,$end,$start,$uname,$udom) = @_;
7964: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7965: if (($cdom ne '') && ($cnum ne '')) {
7966: my $now = time;
7967: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7968: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7969: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7970: my $instcode = $coursehash{'internal.coursecode'};
7971: if ($instcode ne '') {
7972: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7973: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7974: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7975: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7976: if ($result eq 'valid') {
7977: if ($coursehash{'internal.co-owners'}) {
7978: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7979: push(@newcoowners,$coowner);
7980: }
7981: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7982: push(@newcoowners,$uname.':'.$udom);
7983: }
7984: @newcoowners = sort(@newcoowners);
7985: } else {
7986: push(@newcoowners,$uname.':'.$udom);
7987: }
7988: } else {
7989: if ($coursehash{'internal.co-owners'}) {
7990: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7991: unless ($coowner eq $uname.':'.$udom) {
7992: push(@newcoowners,$coowner);
7993: }
7994: }
7995: unless (@newcoowners > 0) {
7996: $delcoowners = 1;
7997: $coowners = '';
7998: }
7999: }
8000: }
8001: if (@newcoowners || $delcoowners) {
8002: &store_coowners($cdom,$cnum,$coursehash{'home'},
8003: $delcoowners,@newcoowners);
8004: }
8005: }
8006: }
8007: }
8008: }
8009: }
8010: }
8011:
8012: sub store_coowners {
8013: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8014: my $cid = $cdom.'_'.$cnum;
8015: my ($coowners,$delresult,$putresult);
8016: if (@newcoowners) {
8017: $coowners = join(',',@newcoowners);
8018: my %coownershash = (
8019: 'internal.co-owners' => $coowners,
8020: );
8021: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8022: if ($putresult eq 'ok') {
8023: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8024: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8025: }
8026: }
8027: }
8028: if ($delcoowners) {
8029: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8030: if ($delresult eq 'ok') {
8031: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8032: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8033: }
8034: }
8035: }
8036: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8037: my %crsinfo =
8038: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8039: if (ref($crsinfo{$cid}) eq 'HASH') {
8040: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8041: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8042: }
8043: }
8044: }
8045:
8046: # -------------------------------------------------- Modify user authentication
8047: # Overrides without validation
8048:
8049: sub modifyuserauth {
8050: my ($udom,$uname,$umode,$upass)=@_;
8051: my $uhome=&homeserver($uname,$udom);
8052: unless (&allowed('mau',$udom)) { return 'refused'; }
8053: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8054: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8055: ' in domain '.$env{'request.role.domain'});
8056: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8057: &escape($upass),$uhome);
8058: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8059: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8060: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8061: &log($udom,,$uname,$uhome,
8062: 'Authentication changed by '.$env{'user.domain'}.', '.
8063: $env{'user.name'}.', '.$umode.
8064: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8065: unless ($reply eq 'ok') {
8066: &logthis('Authentication mode error: '.$reply);
8067: return 'error: '.$reply;
8068: }
8069: return 'ok';
8070: }
8071:
8072: # --------------------------------------------------------------- Modify a user
8073:
8074: sub modifyuser {
8075: my ($udom, $uname, $uid,
8076: $umode, $upass, $first,
8077: $middle, $last, $gene,
8078: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8079: $udom= &LONCAPA::clean_domain($udom);
8080: $uname=&LONCAPA::clean_username($uname);
8081: my $showcandelete = 'none';
8082: if (ref($candelete) eq 'ARRAY') {
8083: if (@{$candelete} > 0) {
8084: $showcandelete = join(', ',@{$candelete});
8085: }
8086: }
8087: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8088: $umode.', '.$first.', '.$middle.', '.
8089: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8090: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8091: ' desiredhome not specified').
8092: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8093: ' in domain '.$env{'request.role.domain'});
8094: my $uhome=&homeserver($uname,$udom,'true');
8095: my $newuser;
8096: if ($uhome eq 'no_host') {
8097: $newuser = 1;
8098: }
8099: # ----------------------------------------------------------------- Create User
8100: if (($uhome eq 'no_host') &&
8101: (($umode && $upass) || ($umode eq 'localauth'))) {
8102: my $unhome='';
8103: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8104: $unhome = $desiredhome;
8105: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8106: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8107: } else { # load balancing routine for determining $unhome
8108: my $loadm=10000000;
8109: my %servers = &get_servers($udom,'library');
8110: foreach my $tryserver (keys(%servers)) {
8111: my $answer=reply('load',$tryserver);
8112: if (($answer=~/\d+/) && ($answer<$loadm)) {
8113: $loadm=$answer;
8114: $unhome=$tryserver;
8115: }
8116: }
8117: }
8118: if (($unhome eq '') || ($unhome eq 'no_host')) {
8119: return 'error: unable to find a home server for '.$uname.
8120: ' in domain '.$udom;
8121: }
8122: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8123: &escape($upass),$unhome);
8124: unless ($reply eq 'ok') {
8125: return 'error: '.$reply;
8126: }
8127: $uhome=&homeserver($uname,$udom,'true');
8128: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8129: return 'error: unable verify users home machine.';
8130: }
8131: } # End of creation of new user
8132: # ---------------------------------------------------------------------- Add ID
8133: if ($uid) {
8134: $uid=~tr/A-Z/a-z/;
8135: my %uidhash=&idrget($udom,$uname);
8136: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8137: && (!$forceid)) {
8138: unless ($uid eq $uidhash{$uname}) {
8139: return 'error: user id "'.$uid.'" does not match '.
8140: 'current user id "'.$uidhash{$uname}.'".';
8141: }
8142: } else {
8143: &idput($udom,($uname => $uid));
8144: }
8145: }
8146: # -------------------------------------------------------------- Add names, etc
8147: my @tmp=&get('environment',
8148: ['firstname','middlename','lastname','generation','id',
8149: 'permanentemail','inststatus'],
8150: $udom,$uname);
8151: my (%names,%oldnames);
8152: if ($tmp[0] =~ m/^error:.*/) {
8153: %names=();
8154: } else {
8155: %names = @tmp;
8156: %oldnames = %names;
8157: }
8158: #
8159: # If name, email and/or uid are blank (e.g., because an uploaded file
8160: # of users did not contain them), do not overwrite existing values
8161: # unless field is in $candelete array ref.
8162: #
8163:
8164: my @fields = ('firstname','middlename','lastname','generation',
8165: 'permanentemail','id');
8166: my %newvalues;
8167: if (ref($candelete) eq 'ARRAY') {
8168: foreach my $field (@fields) {
8169: if (grep(/^\Q$field\E$/,@{$candelete})) {
8170: if ($field eq 'firstname') {
8171: $names{$field} = $first;
8172: } elsif ($field eq 'middlename') {
8173: $names{$field} = $middle;
8174: } elsif ($field eq 'lastname') {
8175: $names{$field} = $last;
8176: } elsif ($field eq 'generation') {
8177: $names{$field} = $gene;
8178: } elsif ($field eq 'permanentemail') {
8179: $names{$field} = $email;
8180: } elsif ($field eq 'id') {
8181: $names{$field} = $uid;
8182: }
8183: }
8184: }
8185: }
8186: if ($first) { $names{'firstname'} = $first; }
8187: if (defined($middle)) { $names{'middlename'} = $middle; }
8188: if ($last) { $names{'lastname'} = $last; }
8189: if (defined($gene)) { $names{'generation'} = $gene; }
8190: if ($email) {
8191: $email=~s/[^\w\@\.\-\,]//gs;
8192: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8193: }
8194: if ($uid) { $names{'id'} = $uid; }
8195: if (defined($inststatus)) {
8196: $names{'inststatus'} = '';
8197: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8198: if (ref($usertypes) eq 'HASH') {
8199: my @okstatuses;
8200: foreach my $item (split(/:/,$inststatus)) {
8201: if (defined($usertypes->{$item})) {
8202: push(@okstatuses,$item);
8203: }
8204: }
8205: if (@okstatuses) {
8206: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8207: }
8208: }
8209: }
8210: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8211: $umode.', '.$first.', '.$middle.', '.
8212: $last.', '.$gene.', '.$email.', '.$inststatus;
8213: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8214: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8215: } else {
8216: $logmsg .= ' during self creation';
8217: }
8218: my $changed;
8219: if ($newuser) {
8220: $changed = 1;
8221: } else {
8222: foreach my $field (@fields) {
8223: if ($names{$field} ne $oldnames{$field}) {
8224: $changed = 1;
8225: last;
8226: }
8227: }
8228: }
8229: unless ($changed) {
8230: $logmsg = 'No changes in user information needed for: '.$logmsg;
8231: &logthis($logmsg);
8232: return 'ok';
8233: }
8234: my $reply = &put('environment', \%names, $udom,$uname);
8235: if ($reply ne 'ok') {
8236: return 'error: '.$reply;
8237: }
8238: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8239: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8240: }
8241: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8242: &devalidate_cache_new('namescache',$uname.':'.$udom);
8243: $logmsg = 'Success modifying user '.$logmsg;
8244: &logthis($logmsg);
8245: return 'ok';
8246: }
8247:
8248: # -------------------------------------------------------------- Modify student
8249:
8250: sub modifystudent {
8251: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8252: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8253: $selfenroll,$context,$inststatus)=@_;
8254: if (!$cid) {
8255: unless ($cid=$env{'request.course.id'}) {
8256: return 'not_in_class';
8257: }
8258: }
8259: # --------------------------------------------------------------- Make the user
8260: my $reply=&modifyuser
8261: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8262: $desiredhome,$email,$inststatus);
8263: unless ($reply eq 'ok') { return $reply; }
8264: # This will cause &modify_student_enrollment to get the uid from the
8265: # students environment
8266: $uid = undef if (!$forceid);
8267: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8268: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
8269: return $reply;
8270: }
8271:
8272: sub modify_student_enrollment {
8273: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
8274: my ($cdom,$cnum,$chome);
8275: if (!$cid) {
8276: unless ($cid=$env{'request.course.id'}) {
8277: return 'not_in_class';
8278: }
8279: $cdom=$env{'course.'.$cid.'.domain'};
8280: $cnum=$env{'course.'.$cid.'.num'};
8281: } else {
8282: ($cdom,$cnum)=split(/_/,$cid);
8283: }
8284: $chome=$env{'course.'.$cid.'.home'};
8285: if (!$chome) {
8286: $chome=&homeserver($cnum,$cdom);
8287: }
8288: if (!$chome) { return 'unknown_course'; }
8289: # Make sure the user exists
8290: my $uhome=&homeserver($uname,$udom);
8291: if (($uhome eq '') || ($uhome eq 'no_host')) {
8292: return 'error: no such user';
8293: }
8294: # Get student data if we were not given enough information
8295: if (!defined($first) || $first eq '' ||
8296: !defined($last) || $last eq '' ||
8297: !defined($uid) || $uid eq '' ||
8298: !defined($middle) || $middle eq '' ||
8299: !defined($gene) || $gene eq '') {
8300: # They did not supply us with enough data to enroll the student, so
8301: # we need to pick up more information.
8302: my %tmp = &get('environment',
8303: ['firstname','middlename','lastname', 'generation','id']
8304: ,$udom,$uname);
8305:
8306: #foreach my $key (keys(%tmp)) {
8307: # &logthis("key $key = ".$tmp{$key});
8308: #}
8309: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8310: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8311: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8312: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8313: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8314: }
8315: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8316: my $user = "$uname:$udom";
8317: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8318: my $reply=cput('classlist',
8319: {$user =>
8320: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
8321: $cdom,$cnum);
8322: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8323: &devalidate_getsection_cache($udom,$uname,$cid);
8324: } else {
8325: return 'error: '.$reply;
8326: }
8327: # Add student role to user
8328: my $uurl='/'.$cid;
8329: $uurl=~s/\_/\//g;
8330: if ($usec) {
8331: $uurl.='/'.$usec;
8332: }
8333: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8334: $selfenroll,$context);
8335: if ($result ne 'ok') {
8336: if ($old_entry{$user} ne '') {
8337: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8338: } else {
8339: $reply = &del('classlist',[$user],$cdom,$cnum);
8340: }
8341: }
8342: return $result;
8343: }
8344:
8345: sub format_name {
8346: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8347: my $name;
8348: if ($first ne 'lastname') {
8349: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8350: } else {
8351: if ($lastname=~/\S/) {
8352: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8353: $name=~s/\s+,/,/;
8354: } else {
8355: $name.= $firstname.' '.$middlename.' '.$generation;
8356: }
8357: }
8358: $name=~s/^\s+//;
8359: $name=~s/\s+$//;
8360: $name=~s/\s+/ /g;
8361: return $name;
8362: }
8363:
8364: # ------------------------------------------------- Write to course preferences
8365:
8366: sub writecoursepref {
8367: my ($courseid,%prefs)=@_;
8368: $courseid=~s/^\///;
8369: $courseid=~s/\_/\//g;
8370: my ($cdomain,$cnum)=split(/\//,$courseid);
8371: my $chome=homeserver($cnum,$cdomain);
8372: if (($chome eq '') || ($chome eq 'no_host')) {
8373: return 'error: no such course';
8374: }
8375: my $cstring='';
8376: foreach my $pref (keys(%prefs)) {
8377: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8378: }
8379: $cstring=~s/\&$//;
8380: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8381: }
8382:
8383: # ---------------------------------------------------------- Make/modify course
8384:
8385: sub createcourse {
8386: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8387: $course_owner,$crstype,$cnum,$context,$category)=@_;
8388: $url=&declutter($url);
8389: my $cid='';
8390: if ($context eq 'requestcourses') {
8391: my $can_create = 0;
8392: my ($ownername,$ownerdom) = split(':',$course_owner);
8393: if ($udom eq $ownerdom) {
8394: if (&usertools_access($ownername,$ownerdom,$category,undef,
8395: $context)) {
8396: $can_create = 1;
8397: }
8398: } else {
8399: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8400: $category);
8401: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8402: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8403: if (@curr > 0) {
8404: my @options = qw(approval validate autolimit);
8405: my $optregex = join('|',@options);
8406: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8407: $can_create = 1;
8408: }
8409: }
8410: }
8411: }
8412: if ($can_create) {
8413: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8414: unless (&allowed('ccc',$udom)) {
8415: return 'refused';
8416: }
8417: }
8418: } else {
8419: return 'refused';
8420: }
8421: } elsif (!&allowed('ccc',$udom)) {
8422: return 'refused';
8423: }
8424: # --------------------------------------------------------------- Get Unique ID
8425: my $uname;
8426: if ($cnum =~ /^$match_courseid$/) {
8427: my $chome=&homeserver($cnum,$udom,'true');
8428: if (($chome eq '') || ($chome eq 'no_host')) {
8429: $uname = $cnum;
8430: } else {
8431: $uname = &generate_coursenum($udom,$crstype);
8432: }
8433: } else {
8434: $uname = &generate_coursenum($udom,$crstype);
8435: }
8436: return $uname if ($uname =~ /^error/);
8437: # -------------------------------------------------- Check supplied server name
8438: if (!defined($course_server)) {
8439: if (defined(&domain($udom,'primary'))) {
8440: $course_server = &domain($udom,'primary');
8441: } else {
8442: $course_server = $env{'user.home'};
8443: }
8444: }
8445: my %host_servers =
8446: &Apache::lonnet::get_servers($udom,'library');
8447: unless ($host_servers{$course_server}) {
8448: return 'error: invalid home server for course: '.$course_server;
8449: }
8450: # ------------------------------------------------------------- Make the course
8451: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8452: $course_server);
8453: unless ($reply eq 'ok') { return 'error: '.$reply; }
8454: my $uhome=&homeserver($uname,$udom,'true');
8455: if (($uhome eq '') || ($uhome eq 'no_host')) {
8456: return 'error: no such course';
8457: }
8458: # ----------------------------------------------------------------- Course made
8459: # log existence
8460: my $now = time;
8461: my $newcourse = {
8462: $udom.'_'.$uname => {
8463: description => $description,
8464: inst_code => $inst_code,
8465: owner => $course_owner,
8466: type => $crstype,
8467: creator => $env{'user.name'}.':'.
8468: $env{'user.domain'},
8469: created => $now,
8470: context => $context,
8471: },
8472: };
8473: &courseidput($udom,$newcourse,$uhome,'notime');
8474: # set toplevel url
8475: my $topurl=$url;
8476: unless ($nonstandard) {
8477: # ------------------------------------------ For standard courses, make top url
8478: my $mapurl=&clutter($url);
8479: if ($mapurl eq '/res/') { $mapurl=''; }
8480: $env{'form.initmap'}=(<<ENDINITMAP);
8481: <map>
8482: <resource id="1" type="start"></resource>
8483: <resource id="2" src="$mapurl"></resource>
8484: <resource id="3" type="finish"></resource>
8485: <link index="1" from="1" to="2"></link>
8486: <link index="2" from="2" to="3"></link>
8487: </map>
8488: ENDINITMAP
8489: $topurl=&declutter(
8490: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8491: );
8492: }
8493: # ----------------------------------------------------------- Write preferences
8494: &writecoursepref($udom.'_'.$uname,
8495: ('description' => $description,
8496: 'url' => $topurl,
8497: 'internal.creator' => $env{'user.name'}.':'.
8498: $env{'user.domain'},
8499: 'internal.created' => $now,
8500: 'internal.creationcontext' => $context)
8501: );
8502: return '/'.$udom.'/'.$uname;
8503: }
8504:
8505: # ------------------------------------------------------------------- Create ID
8506: sub generate_coursenum {
8507: my ($udom,$crstype) = @_;
8508: my $domdesc = &domain($udom);
8509: return 'error: invalid domain' if ($domdesc eq '');
8510: my $first;
8511: if ($crstype eq 'Community') {
8512: $first = '0';
8513: } else {
8514: $first = int(1+rand(9));
8515: }
8516: my $uname=$first.
8517: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8518: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8519: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8520: # ----------------------------------------------- Make sure that does not exist
8521: my $uhome=&homeserver($uname,$udom,'true');
8522: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8523: if ($crstype eq 'Community') {
8524: $first = '0';
8525: } else {
8526: $first = int(1+rand(9));
8527: }
8528: $uname=$first.
8529: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8530: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8531: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8532: $uhome=&homeserver($uname,$udom,'true');
8533: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8534: return 'error: unable to generate unique course-ID';
8535: }
8536: }
8537: return $uname;
8538: }
8539:
8540: sub is_course {
8541: my ($cdom, $cnum) = scalar(@_) == 1 ?
8542: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8543:
8544: return unless $cdom and $cnum;
8545:
8546: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8547: '.');
8548:
8549: return unless exists($courses{$cdom.'_'.$cnum});
8550: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8551: }
8552:
8553: sub store_userdata {
8554: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8555: my $result;
8556: if ($datakey ne '') {
8557: if (ref($storehash) eq 'HASH') {
8558: if ($udom eq '' || $uname eq '') {
8559: $udom = $env{'user.domain'};
8560: $uname = $env{'user.name'};
8561: }
8562: my $uhome=&homeserver($uname,$udom);
8563: if (($uhome eq '') || ($uhome eq 'no_host')) {
8564: $result = 'error: no_host';
8565: } else {
8566: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8567: $storehash->{'host'} = $perlvar{'lonHostID'};
8568:
8569: my $namevalue='';
8570: foreach my $key (keys(%{$storehash})) {
8571: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8572: }
8573: $namevalue=~s/\&$//;
8574: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8575: $namevalue,$uhome);
8576: }
8577: } else {
8578: $result = 'error: data to store was not a hash reference';
8579: }
8580: } else {
8581: $result= 'error: invalid requestkey';
8582: }
8583: return $result;
8584: }
8585:
8586: # ---------------------------------------------------------- Assign Custom Role
8587:
8588: sub assigncustomrole {
8589: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8590: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8591: $end,$start,$deleteflag,$selfenroll,$context);
8592: }
8593:
8594: # ----------------------------------------------------------------- Revoke Role
8595:
8596: sub revokerole {
8597: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8598: my $now=time;
8599: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8600: }
8601:
8602: # ---------------------------------------------------------- Revoke Custom Role
8603:
8604: sub revokecustomrole {
8605: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8606: my $now=time;
8607: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8608: $deleteflag,$selfenroll,$context);
8609: }
8610:
8611: # ------------------------------------------------------------ Disk usage
8612: sub diskusage {
8613: my ($udom,$uname,$directorypath,$getpropath)=@_;
8614: $directorypath =~ s/\/$//;
8615: my $listing=&reply('du2:'.&escape($directorypath).':'
8616: .&escape($getpropath).':'.&escape($uname).':'
8617: .&escape($udom),homeserver($uname,$udom));
8618: if ($listing eq 'unknown_cmd') {
8619: if ($getpropath) {
8620: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8621: }
8622: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8623: }
8624: return $listing;
8625: }
8626:
8627: sub is_locked {
8628: my ($file_name, $domain, $user, $which) = @_;
8629: my @check;
8630: my $is_locked;
8631: push (@check,$file_name);
8632: my %locked = &get('file_permissions',\@check,
8633: $env{'user.domain'},$env{'user.name'});
8634: my ($tmp)=keys(%locked);
8635: if ($tmp=~/^error:/) { undef(%locked); }
8636:
8637: if (ref($locked{$file_name}) eq 'ARRAY') {
8638: $is_locked = 'false';
8639: foreach my $entry (@{$locked{$file_name}}) {
8640: if (ref($entry) eq 'ARRAY') {
8641: $is_locked = 'true';
8642: if (ref($which) eq 'ARRAY') {
8643: push(@{$which},$entry);
8644: } else {
8645: last;
8646: }
8647: }
8648: }
8649: } else {
8650: $is_locked = 'false';
8651: }
8652: return $is_locked;
8653: }
8654:
8655: sub declutter_portfile {
8656: my ($file) = @_;
8657: $file =~ s{^(/portfolio/|portfolio/)}{/};
8658: return $file;
8659: }
8660:
8661: # ------------------------------------------------------------- Mark as Read Only
8662:
8663: sub mark_as_readonly {
8664: my ($domain,$user,$files,$what) = @_;
8665: my %current_permissions = &dump('file_permissions',$domain,$user);
8666: my ($tmp)=keys(%current_permissions);
8667: if ($tmp=~/^error:/) { undef(%current_permissions); }
8668: foreach my $file (@{$files}) {
8669: $file = &declutter_portfile($file);
8670: push(@{$current_permissions{$file}},$what);
8671: }
8672: &put('file_permissions',\%current_permissions,$domain,$user);
8673: return;
8674: }
8675:
8676: # ------------------------------------------------------------Save Selected Files
8677:
8678: sub save_selected_files {
8679: my ($user, $path, @files) = @_;
8680: my $filename = $user."savedfiles";
8681: my @other_files = &files_not_in_path($user, $path);
8682: open (OUT, '>'.$tmpdir.$filename);
8683: foreach my $file (@files) {
8684: print (OUT $env{'form.currentpath'}.$file."\n");
8685: }
8686: foreach my $file (@other_files) {
8687: print (OUT $file."\n");
8688: }
8689: close (OUT);
8690: return 'ok';
8691: }
8692:
8693: sub clear_selected_files {
8694: my ($user) = @_;
8695: my $filename = $user."savedfiles";
8696: open (OUT, '>'.LONCAPA::tempdir().$filename);
8697: print (OUT undef);
8698: close (OUT);
8699: return ("ok");
8700: }
8701:
8702: sub files_in_path {
8703: my ($user, $path) = @_;
8704: my $filename = $user."savedfiles";
8705: my %return_files;
8706: open (IN, '<'.LONCAPA::tempdir().$filename);
8707: while (my $line_in = <IN>) {
8708: chomp ($line_in);
8709: my @paths_and_file = split (m!/!, $line_in);
8710: my $file_part = pop (@paths_and_file);
8711: my $path_part = join ('/', @paths_and_file);
8712: $path_part.='/';
8713: my $path_and_file = $path_part.$file_part;
8714: if ($path_part eq $path) {
8715: $return_files{$file_part}= 'selected';
8716: }
8717: }
8718: close (IN);
8719: return (\%return_files);
8720: }
8721:
8722: # called in portfolio select mode, to show files selected NOT in current directory
8723: sub files_not_in_path {
8724: my ($user, $path) = @_;
8725: my $filename = $user."savedfiles";
8726: my @return_files;
8727: my $path_part;
8728: open(IN, '<'.LONCAPA::.$filename);
8729: while (my $line = <IN>) {
8730: #ok, I know it's clunky, but I want it to work
8731: my @paths_and_file = split(m|/|, $line);
8732: my $file_part = pop(@paths_and_file);
8733: chomp($file_part);
8734: my $path_part = join('/', @paths_and_file);
8735: $path_part .= '/';
8736: my $path_and_file = $path_part.$file_part;
8737: if ($path_part ne $path) {
8738: push(@return_files, ($path_and_file));
8739: }
8740: }
8741: close(OUT);
8742: return (@return_files);
8743: }
8744:
8745: #----------------------------------------------Get portfolio file permissions
8746:
8747: sub get_portfile_permissions {
8748: my ($domain,$user) = @_;
8749: my %current_permissions = &dump('file_permissions',$domain,$user);
8750: my ($tmp)=keys(%current_permissions);
8751: if ($tmp=~/^error:/) { undef(%current_permissions); }
8752: return \%current_permissions;
8753: }
8754:
8755: #---------------------------------------------Get portfolio file access controls
8756:
8757: sub get_access_controls {
8758: my ($current_permissions,$group,$file) = @_;
8759: my %access;
8760: my $real_file = $file;
8761: $file =~ s/\.meta$//;
8762: if (defined($file)) {
8763: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8764: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8765: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8766: }
8767: }
8768: } else {
8769: foreach my $key (keys(%{$current_permissions})) {
8770: if ($key =~ /\0accesscontrol$/) {
8771: if (defined($group)) {
8772: if ($key !~ m-^\Q$group\E/-) {
8773: next;
8774: }
8775: }
8776: my ($fullpath) = split(/\0/,$key);
8777: if (ref($$current_permissions{$key}) eq 'HASH') {
8778: foreach my $control (keys(%{$$current_permissions{$key}})) {
8779: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8780: }
8781: }
8782: }
8783: }
8784: }
8785: return %access;
8786: }
8787:
8788: sub modify_access_controls {
8789: my ($file_name,$changes,$domain,$user)=@_;
8790: my ($outcome,$deloutcome);
8791: my %store_permissions;
8792: my %new_values;
8793: my %new_control;
8794: my %translation;
8795: my @deletions = ();
8796: my $now = time;
8797: if (exists($$changes{'activate'})) {
8798: if (ref($$changes{'activate'}) eq 'HASH') {
8799: my @newitems = sort(keys(%{$$changes{'activate'}}));
8800: my $numnew = scalar(@newitems);
8801: for (my $i=0; $i<$numnew; $i++) {
8802: my $newkey = $newitems[$i];
8803: my $newid = &Apache::loncommon::get_cgi_id();
8804: if ($newkey =~ /^\d+:/) {
8805: $newkey =~ s/^(\d+)/$newid/;
8806: $translation{$1} = $newid;
8807: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8808: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8809: $translation{$1} = $newid;
8810: }
8811: $new_values{$file_name."\0".$newkey} =
8812: $$changes{'activate'}{$newitems[$i]};
8813: $new_control{$newkey} = $now;
8814: }
8815: }
8816: }
8817: my %todelete;
8818: my %changed_items;
8819: foreach my $action ('delete','update') {
8820: if (exists($$changes{$action})) {
8821: if (ref($$changes{$action}) eq 'HASH') {
8822: foreach my $key (keys(%{$$changes{$action}})) {
8823: my ($itemnum) = ($key =~ /^([^:]+):/);
8824: if ($action eq 'delete') {
8825: $todelete{$itemnum} = 1;
8826: } else {
8827: $changed_items{$itemnum} = $key;
8828: }
8829: }
8830: }
8831: }
8832: }
8833: # get lock on access controls for file.
8834: my $lockhash = {
8835: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8836: ':'.$env{'user.domain'},
8837: };
8838: my $tries = 0;
8839: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8840:
8841: while (($gotlock ne 'ok') && $tries <3) {
8842: $tries ++;
8843: sleep 1;
8844: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8845: }
8846: if ($gotlock eq 'ok') {
8847: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8848: my ($tmp)=keys(%curr_permissions);
8849: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8850: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8851: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8852: if (ref($curr_controls) eq 'HASH') {
8853: foreach my $control_item (keys(%{$curr_controls})) {
8854: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8855: if (defined($todelete{$itemnum})) {
8856: push(@deletions,$file_name."\0".$control_item);
8857: } else {
8858: if (defined($changed_items{$itemnum})) {
8859: $new_control{$changed_items{$itemnum}} = $now;
8860: push(@deletions,$file_name."\0".$control_item);
8861: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8862: } else {
8863: $new_control{$control_item} = $$curr_controls{$control_item};
8864: }
8865: }
8866: }
8867: }
8868: }
8869: my ($group);
8870: if (&is_course($domain,$user)) {
8871: ($group,my $file) = split(/\//,$file_name,2);
8872: }
8873: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8874: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8875: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8876: # remove lock
8877: my @del_lock = ($file_name."\0".'locked_access_records');
8878: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8879: my $sqlresult =
8880: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8881: $group);
8882: } else {
8883: $outcome = "error: could not obtain lockfile\n";
8884: }
8885: return ($outcome,$deloutcome,\%new_values,\%translation);
8886: }
8887:
8888: sub make_public_indefinitely {
8889: my ($requrl) = @_;
8890: my $now = time;
8891: my $action = 'activate';
8892: my $aclnum = 0;
8893: if (&is_portfolio_url($requrl)) {
8894: my (undef,$udom,$unum,$file_name,$group) =
8895: &parse_portfolio_url($requrl);
8896: my $current_perms = &get_portfile_permissions($udom,$unum);
8897: my %access_controls = &get_access_controls($current_perms,
8898: $group,$file_name);
8899: foreach my $key (keys(%{$access_controls{$file_name}})) {
8900: my ($num,$scope,$end,$start) =
8901: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8902: if ($scope eq 'public') {
8903: if ($start <= $now && $end == 0) {
8904: $action = 'none';
8905: } else {
8906: $action = 'update';
8907: $aclnum = $num;
8908: }
8909: last;
8910: }
8911: }
8912: if ($action eq 'none') {
8913: return 'ok';
8914: } else {
8915: my %changes;
8916: my $newend = 0;
8917: my $newstart = $now;
8918: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8919: $changes{$action}{$newkey} = {
8920: type => 'public',
8921: time => {
8922: start => $newstart,
8923: end => $newend,
8924: },
8925: };
8926: my ($outcome,$deloutcome,$new_values,$translation) =
8927: &modify_access_controls($file_name,\%changes,$udom,$unum);
8928: return $outcome;
8929: }
8930: } else {
8931: return 'invalid';
8932: }
8933: }
8934:
8935: #------------------------------------------------------Get Marked as Read Only
8936:
8937: sub get_marked_as_readonly {
8938: my ($domain,$user,$what,$group) = @_;
8939: my $current_permissions = &get_portfile_permissions($domain,$user);
8940: my @readonly_files;
8941: my $cmp1=$what;
8942: if (ref($what)) { $cmp1=join('',@{$what}) };
8943: while (my ($file_name,$value) = each(%{$current_permissions})) {
8944: if (defined($group)) {
8945: if ($file_name !~ m-^\Q$group\E/-) {
8946: next;
8947: }
8948: }
8949: if (ref($value) eq "ARRAY"){
8950: foreach my $stored_what (@{$value}) {
8951: my $cmp2=$stored_what;
8952: if (ref($stored_what) eq 'ARRAY') {
8953: $cmp2=join('',@{$stored_what});
8954: }
8955: if ($cmp1 eq $cmp2) {
8956: push(@readonly_files, $file_name);
8957: last;
8958: } elsif (!defined($what)) {
8959: push(@readonly_files, $file_name);
8960: last;
8961: }
8962: }
8963: }
8964: }
8965: return @readonly_files;
8966: }
8967: #-----------------------------------------------------------Get Marked as Read Only Hash
8968:
8969: sub get_marked_as_readonly_hash {
8970: my ($current_permissions,$group,$what) = @_;
8971: my %readonly_files;
8972: while (my ($file_name,$value) = each(%{$current_permissions})) {
8973: if (defined($group)) {
8974: if ($file_name !~ m-^\Q$group\E/-) {
8975: next;
8976: }
8977: }
8978: if (ref($value) eq "ARRAY"){
8979: foreach my $stored_what (@{$value}) {
8980: if (ref($stored_what) eq 'ARRAY') {
8981: foreach my $lock_descriptor(@{$stored_what}) {
8982: if ($lock_descriptor eq 'graded') {
8983: $readonly_files{$file_name} = 'graded';
8984: } elsif ($lock_descriptor eq 'handback') {
8985: $readonly_files{$file_name} = 'handback';
8986: } else {
8987: if (!exists($readonly_files{$file_name})) {
8988: $readonly_files{$file_name} = 'locked';
8989: }
8990: }
8991: }
8992: }
8993: }
8994: }
8995: }
8996: return %readonly_files;
8997: }
8998: # ------------------------------------------------------------ Unmark as Read Only
8999:
9000: sub unmark_as_readonly {
9001: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9002: # for portfolio submissions, $what contains [$symb,$crsid]
9003: my ($domain,$user,$what,$file_name,$group) = @_;
9004: $file_name = &declutter_portfile($file_name);
9005: my $symb_crs = $what;
9006: if (ref($what)) { $symb_crs=join('',@$what); }
9007: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9008: my ($tmp)=keys(%current_permissions);
9009: if ($tmp=~/^error:/) { undef(%current_permissions); }
9010: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9011: foreach my $file (@readonly_files) {
9012: my $clean_file = &declutter_portfile($file);
9013: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9014: my $current_locks = $current_permissions{$file};
9015: my @new_locks;
9016: my @del_keys;
9017: if (ref($current_locks) eq "ARRAY"){
9018: foreach my $locker (@{$current_locks}) {
9019: my $compare=$locker;
9020: if (ref($locker) eq 'ARRAY') {
9021: $compare=join('',@{$locker});
9022: if ($compare ne $symb_crs) {
9023: push(@new_locks, $locker);
9024: }
9025: }
9026: }
9027: if (scalar(@new_locks) > 0) {
9028: $current_permissions{$file} = \@new_locks;
9029: } else {
9030: push(@del_keys, $file);
9031: &del('file_permissions',\@del_keys, $domain, $user);
9032: delete($current_permissions{$file});
9033: }
9034: }
9035: }
9036: &put('file_permissions',\%current_permissions,$domain,$user);
9037: return;
9038: }
9039:
9040: # ------------------------------------------------------------ Directory lister
9041:
9042: sub dirlist {
9043: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9044: $uri=~s/^\///;
9045: $uri=~s/\/$//;
9046: my ($udom, $uname);
9047: if ($getuserdir) {
9048: $udom = $userdomain;
9049: $uname = $username;
9050: } else {
9051: (undef,$udom,$uname)=split(/\//,$uri);
9052: if(defined($userdomain)) {
9053: $udom = $userdomain;
9054: }
9055: if(defined($username)) {
9056: $uname = $username;
9057: }
9058: }
9059: my ($dirRoot,$listing,@listing_results);
9060:
9061: $dirRoot = $perlvar{'lonDocRoot'};
9062: if (defined($getpropath)) {
9063: $dirRoot = &propath($udom,$uname);
9064: $dirRoot =~ s/\/$//;
9065: } elsif (defined($getuserdir)) {
9066: my $subdir=$uname.'__';
9067: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9068: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9069: ."/$udom/$subdir/$uname";
9070: } elsif (defined($alternateRoot)) {
9071: $dirRoot = $alternateRoot;
9072: }
9073:
9074: if($udom) {
9075: if($uname) {
9076: my $uhome = &homeserver($uname,$udom);
9077: if ($uhome eq 'no_host') {
9078: return ([],'no_host');
9079: }
9080: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9081: .$getuserdir.':'.&escape($dirRoot)
9082: .':'.&escape($uname).':'.&escape($udom),$uhome);
9083: if ($listing eq 'unknown_cmd') {
9084: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9085: } else {
9086: @listing_results = map { &unescape($_); } split(/:/,$listing);
9087: }
9088: if ($listing eq 'unknown_cmd') {
9089: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9090: @listing_results = split(/:/,$listing);
9091: } else {
9092: @listing_results = map { &unescape($_); } split(/:/,$listing);
9093: }
9094: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9095: ($listing eq 'rejected') || ($listing eq 'refused') ||
9096: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9097: return ([],$listing);
9098: } else {
9099: return (\@listing_results);
9100: }
9101: } elsif(!$alternateRoot) {
9102: my (%allusers,%listerror);
9103: my %servers = &get_servers($udom,'library');
9104: foreach my $tryserver (keys(%servers)) {
9105: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9106: &escape($udom),$tryserver);
9107: if ($listing eq 'unknown_cmd') {
9108: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9109: $udom, $tryserver);
9110: } else {
9111: @listing_results = map { &unescape($_); } split(/:/,$listing);
9112: }
9113: if ($listing eq 'unknown_cmd') {
9114: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9115: $udom, $tryserver);
9116: @listing_results = split(/:/,$listing);
9117: } else {
9118: @listing_results =
9119: map { &unescape($_); } split(/:/,$listing);
9120: }
9121: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9122: ($listing eq 'rejected') || ($listing eq 'refused') ||
9123: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9124: $listerror{$tryserver} = $listing;
9125: } else {
9126: foreach my $line (@listing_results) {
9127: my ($entry) = split(/&/,$line,2);
9128: $allusers{$entry} = 1;
9129: }
9130: }
9131: }
9132: my @alluserslist=();
9133: foreach my $user (sort(keys(%allusers))) {
9134: push(@alluserslist,$user.'&user');
9135: }
9136: return (\@alluserslist);
9137: } else {
9138: return ([],'missing username');
9139: }
9140: } elsif(!defined($getpropath)) {
9141: my $path = $perlvar{'lonDocRoot'}.'/res/';
9142: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9143: return (\@all_domains);
9144: } else {
9145: return ([],'missing domain');
9146: }
9147: }
9148:
9149: # --------------------------------------------- GetFileTimestamp
9150: # This function utilizes dirlist and returns the date stamp for
9151: # when it was last modified. It will also return an error of -1
9152: # if an error occurs
9153:
9154: sub GetFileTimestamp {
9155: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9156: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9157: $studentName = &LONCAPA::clean_username($studentName);
9158: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9159: undef,$getuserdir);
9160: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9161: return -1;
9162: }
9163: if (ref($fileref) eq 'ARRAY') {
9164: my @stats = split('&',$fileref->[0]);
9165: # @stats contains first the filename, then the stat output
9166: return $stats[10]; # so this is 10 instead of 9.
9167: } else {
9168: return -1;
9169: }
9170: }
9171:
9172: sub stat_file {
9173: my ($uri) = @_;
9174: $uri = &clutter_with_no_wrapper($uri);
9175:
9176: my ($udom,$uname,$file);
9177: if ($uri =~ m-^/(uploaded|editupload)/-) {
9178: ($udom,$uname,$file) =
9179: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9180: $file = 'userfiles/'.$file;
9181: }
9182: if ($uri =~ m-^/res/-) {
9183: ($udom,$uname) =
9184: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9185: $file = $uri;
9186: }
9187:
9188: if (!$udom || !$uname || !$file) {
9189: # unable to handle the uri
9190: return ();
9191: }
9192: my $getpropath;
9193: if ($file =~ /^userfiles\//) {
9194: $getpropath = 1;
9195: }
9196: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9197: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9198: return ();
9199: } else {
9200: if (ref($listref) eq 'ARRAY') {
9201: my @stats = split('&',$listref->[0]);
9202: shift(@stats); #filename is first
9203: return @stats;
9204: }
9205: }
9206: return ();
9207: }
9208:
9209: # -------------------------------------------------------- Value of a Condition
9210:
9211: # gets the value of a specific preevaluated condition
9212: # stored in the string $env{user.state.<cid>}
9213: # or looks up a condition reference in the bighash and if if hasn't
9214: # already been evaluated recurses into docondval to get the value of
9215: # the condition, then memoizing it to
9216: # $env{user.state.<cid>.<condition>}
9217: sub directcondval {
9218: my $number=shift;
9219: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9220: &Apache::lonuserstate::evalstate();
9221: }
9222: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9223: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9224: } elsif ($number =~ /^_/) {
9225: my $sub_condition;
9226: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9227: &GDBM_READER(),0640)) {
9228: $sub_condition=$bighash{'conditions'.$number};
9229: untie(%bighash);
9230: }
9231: my $value = &docondval($sub_condition);
9232: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9233: return $value;
9234: }
9235: if ($env{'user.state.'.$env{'request.course.id'}}) {
9236: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9237: } else {
9238: return 2;
9239: }
9240: }
9241:
9242: # get the collection of conditions for this resource
9243: sub condval {
9244: my $condidx=shift;
9245: my $allpathcond='';
9246: foreach my $cond (split(/\|/,$condidx)) {
9247: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9248: $allpathcond.=
9249: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9250: }
9251: }
9252: $allpathcond=~s/\|$//;
9253: return &docondval($allpathcond);
9254: }
9255:
9256: #evaluates an expression of conditions
9257: sub docondval {
9258: my ($allpathcond) = @_;
9259: my $result=0;
9260: if ($env{'request.course.id'}
9261: && defined($allpathcond)) {
9262: my $operand='|';
9263: my @stack;
9264: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9265: if ($chunk eq '(') {
9266: push @stack,($operand,$result);
9267: } elsif ($chunk eq ')') {
9268: my $before=pop @stack;
9269: if (pop @stack eq '&') {
9270: $result=$result>$before?$before:$result;
9271: } else {
9272: $result=$result>$before?$result:$before;
9273: }
9274: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9275: $operand=$chunk;
9276: } else {
9277: my $new=directcondval($chunk);
9278: if ($operand eq '&') {
9279: $result=$result>$new?$new:$result;
9280: } else {
9281: $result=$result>$new?$result:$new;
9282: }
9283: }
9284: }
9285: }
9286: return $result;
9287: }
9288:
9289: # ---------------------------------------------------- Devalidate courseresdata
9290:
9291: sub devalidatecourseresdata {
9292: my ($coursenum,$coursedomain)=@_;
9293: my $hashid=$coursenum.':'.$coursedomain;
9294: &devalidate_cache_new('courseres',$hashid);
9295: }
9296:
9297:
9298: # --------------------------------------------------- Course Resourcedata Query
9299: #
9300: # Parameters:
9301: # $coursenum - Number of the course.
9302: # $coursedomain - Domain at which the course was created.
9303: # Returns:
9304: # A hash of the course parameters along (I think) with timestamps
9305: # and version info.
9306:
9307: sub get_courseresdata {
9308: my ($coursenum,$coursedomain)=@_;
9309: my $coursehom=&homeserver($coursenum,$coursedomain);
9310: my $hashid=$coursenum.':'.$coursedomain;
9311: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9312: my %dumpreply;
9313: unless (defined($cached)) {
9314: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9315: $result=\%dumpreply;
9316: my ($tmp) = keys(%dumpreply);
9317: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9318: &do_cache_new('courseres',$hashid,$result,600);
9319: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9320: return $tmp;
9321: } elsif ($tmp =~ /^(error)/) {
9322: $result=undef;
9323: &do_cache_new('courseres',$hashid,$result,600);
9324: }
9325: }
9326: return $result;
9327: }
9328:
9329: sub devalidateuserresdata {
9330: my ($uname,$udom)=@_;
9331: my $hashid="$udom:$uname";
9332: &devalidate_cache_new('userres',$hashid);
9333: }
9334:
9335: sub get_userresdata {
9336: my ($uname,$udom)=@_;
9337: #most student don\'t have any data set, check if there is some data
9338: if (&EXT_cache_status($udom,$uname)) { return undef; }
9339:
9340: my $hashid="$udom:$uname";
9341: my ($result,$cached)=&is_cached_new('userres',$hashid);
9342: if (!defined($cached)) {
9343: my %resourcedata=&dump('resourcedata',$udom,$uname);
9344: $result=\%resourcedata;
9345: &do_cache_new('userres',$hashid,$result,600);
9346: }
9347: my ($tmp)=keys(%$result);
9348: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9349: return $result;
9350: }
9351: #error 2 occurs when the .db doesn't exist
9352: if ($tmp!~/error: 2 /) {
9353: &logthis("<font color=\"blue\">WARNING:".
9354: " Trying to get resource data for ".
9355: $uname." at ".$udom.": ".
9356: $tmp."</font>");
9357: } elsif ($tmp=~/error: 2 /) {
9358: #&EXT_cache_set($udom,$uname);
9359: &do_cache_new('userres',$hashid,undef,600);
9360: undef($tmp); # not really an error so don't send it back
9361: }
9362: return $tmp;
9363: }
9364: #----------------------------------------------- resdata - return resource data
9365: # Purpose:
9366: # Return resource data for either users or for a course.
9367: # Parameters:
9368: # $name - Course/user name.
9369: # $domain - Name of the domain the user/course is registered on.
9370: # $type - Type of thing $name is (must be 'course' or 'user'
9371: # @which - Array of names of resources desired.
9372: # Returns:
9373: # The value of the first reasource in @which that is found in the
9374: # resource hash.
9375: # Exceptional Conditions:
9376: # If the $type passed in is not valid (not the string 'course' or
9377: # 'user', an undefined reference is returned.
9378: # If none of the resources are found, an undef is returned
9379: sub resdata {
9380: my ($name,$domain,$type,@which)=@_;
9381: my $result;
9382: if ($type eq 'course') {
9383: $result=&get_courseresdata($name,$domain);
9384: } elsif ($type eq 'user') {
9385: $result=&get_userresdata($name,$domain);
9386: }
9387: if (!ref($result)) { return $result; }
9388: foreach my $item (@which) {
9389: if (defined($result->{$item->[0]})) {
9390: return [$result->{$item->[0]},$item->[1]];
9391: }
9392: }
9393: return undef;
9394: }
9395:
9396: #
9397: # EXT resource caching routines
9398: #
9399:
9400: sub clear_EXT_cache_status {
9401: &delenv('cache.EXT.');
9402: }
9403:
9404: sub EXT_cache_status {
9405: my ($target_domain,$target_user) = @_;
9406: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9407: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9408: # We know already the user has no data
9409: return 1;
9410: } else {
9411: return 0;
9412: }
9413: }
9414:
9415: sub EXT_cache_set {
9416: my ($target_domain,$target_user) = @_;
9417: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9418: #&appenv({$cachename => time});
9419: }
9420:
9421: # --------------------------------------------------------- Value of a Variable
9422: sub EXT {
9423:
9424: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9425: unless ($varname) { return ''; }
9426: #get real user name/domain, courseid and symb
9427: my $courseid;
9428: my $publicuser;
9429: if ($symbparm) {
9430: $symbparm=&get_symb_from_alias($symbparm);
9431: }
9432: if (!($uname && $udom)) {
9433: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9434: if (!$symbparm) { $symbparm=$cursymb; }
9435: } else {
9436: $courseid=$env{'request.course.id'};
9437: }
9438: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9439: my $rest;
9440: if (defined($therest[0])) {
9441: $rest=join('.',@therest);
9442: } else {
9443: $rest='';
9444: }
9445:
9446: my $qualifierrest=$qualifier;
9447: if ($rest) { $qualifierrest.='.'.$rest; }
9448: my $spacequalifierrest=$space;
9449: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9450: if ($realm eq 'user') {
9451: # --------------------------------------------------------------- user.resource
9452: if ($space eq 'resource') {
9453: if ( (defined($Apache::lonhomework::parsing_a_problem)
9454: || defined($Apache::lonhomework::parsing_a_task))
9455: &&
9456: ($symbparm eq &symbread()) ) {
9457: # if we are in the middle of processing the resource the
9458: # get the value we are planning on committing
9459: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9460: return $Apache::lonhomework::results{$qualifierrest};
9461: } else {
9462: return $Apache::lonhomework::history{$qualifierrest};
9463: }
9464: } else {
9465: my %restored;
9466: if ($publicuser || $env{'request.state'} eq 'construct') {
9467: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9468: } else {
9469: %restored=&restore($symbparm,$courseid,$udom,$uname);
9470: }
9471: return $restored{$qualifierrest};
9472: }
9473: # ----------------------------------------------------------------- user.access
9474: } elsif ($space eq 'access') {
9475: # FIXME - not supporting calls for a specific user
9476: return &allowed($qualifier,$rest);
9477: # ------------------------------------------ user.preferences, user.environment
9478: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9479: if (($uname eq $env{'user.name'}) &&
9480: ($udom eq $env{'user.domain'})) {
9481: return $env{join('.',('environment',$qualifierrest))};
9482: } else {
9483: my %returnhash;
9484: if (!$publicuser) {
9485: %returnhash=&userenvironment($udom,$uname,
9486: $qualifierrest);
9487: }
9488: return $returnhash{$qualifierrest};
9489: }
9490: # ----------------------------------------------------------------- user.course
9491: } elsif ($space eq 'course') {
9492: # FIXME - not supporting calls for a specific user
9493: return $env{join('.',('request.course',$qualifier))};
9494: # ------------------------------------------------------------------- user.role
9495: } elsif ($space eq 'role') {
9496: # FIXME - not supporting calls for a specific user
9497: my ($role,$where)=split(/\./,$env{'request.role'});
9498: if ($qualifier eq 'value') {
9499: return $role;
9500: } elsif ($qualifier eq 'extent') {
9501: return $where;
9502: }
9503: # ----------------------------------------------------------------- user.domain
9504: } elsif ($space eq 'domain') {
9505: return $udom;
9506: # ------------------------------------------------------------------- user.name
9507: } elsif ($space eq 'name') {
9508: return $uname;
9509: # ---------------------------------------------------- Any other user namespace
9510: } else {
9511: my %reply;
9512: if (!$publicuser) {
9513: %reply=&get($space,[$qualifierrest],$udom,$uname);
9514: }
9515: return $reply{$qualifierrest};
9516: }
9517: } elsif ($realm eq 'query') {
9518: # ---------------------------------------------- pull stuff out of query string
9519: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9520: [$spacequalifierrest]);
9521: return $env{'form.'.$spacequalifierrest};
9522: } elsif ($realm eq 'request') {
9523: # ------------------------------------------------------------- request.browser
9524: if ($space eq 'browser') {
9525: return $env{'browser.'.$qualifier};
9526: # ------------------------------------------------------------ request.filename
9527: } else {
9528: return $env{'request.'.$spacequalifierrest};
9529: }
9530: } elsif ($realm eq 'course') {
9531: # ---------------------------------------------------------- course.description
9532: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9533: } elsif ($realm eq 'resource') {
9534:
9535: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9536: if (!$symbparm) { $symbparm=&symbread(); }
9537: }
9538:
9539: if ($space eq 'title') {
9540: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9541: return &gettitle($symbparm);
9542: }
9543:
9544: if ($space eq 'map') {
9545: my ($map) = &decode_symb($symbparm);
9546: return &symbread($map);
9547: }
9548: if ($space eq 'filename') {
9549: if ($symbparm) {
9550: return &clutter((&decode_symb($symbparm))[2]);
9551: }
9552: return &hreflocation('',$env{'request.filename'});
9553: }
9554:
9555: my ($section, $group, @groups);
9556: my ($courselevelm,$courselevel);
9557: if ($symbparm && defined($courseid) &&
9558: $courseid eq $env{'request.course.id'}) {
9559:
9560: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9561:
9562: # ----------------------------------------------------- Cascading lookup scheme
9563: my $symbp=$symbparm;
9564: my $mapp=&deversion((&decode_symb($symbp))[0]);
9565:
9566: my $symbparm=$symbp.'.'.$spacequalifierrest;
9567: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9568:
9569: if (($env{'user.name'} eq $uname) &&
9570: ($env{'user.domain'} eq $udom)) {
9571: $section=$env{'request.course.sec'};
9572: @groups = split(/:/,$env{'request.course.groups'});
9573: @groups=&sort_course_groups($courseid,@groups);
9574: } else {
9575: if (! defined($usection)) {
9576: $section=&getsection($udom,$uname,$courseid);
9577: } else {
9578: $section = $usection;
9579: }
9580: @groups = &get_users_groups($udom,$uname,$courseid);
9581: }
9582:
9583: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9584: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9585: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9586:
9587: $courselevel=$courseid.'.'.$spacequalifierrest;
9588: my $courselevelr=$courseid.'.'.$symbparm;
9589: $courselevelm=$courseid.'.'.$mapparm;
9590:
9591: # ----------------------------------------------------------- first, check user
9592:
9593: my $userreply=&resdata($uname,$udom,'user',
9594: ([$courselevelr,'resource'],
9595: [$courselevelm,'map' ],
9596: [$courselevel, 'course' ]));
9597: if (defined($userreply)) { return &get_reply($userreply); }
9598:
9599: # ------------------------------------------------ second, check some of course
9600: my $coursereply;
9601: if (@groups > 0) {
9602: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9603: $mapparm,$spacequalifierrest);
9604: if (defined($coursereply)) { return &get_reply($coursereply); }
9605: }
9606:
9607: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9608: $env{'course.'.$courseid.'.domain'},
9609: 'course',
9610: ([$seclevelr, 'resource'],
9611: [$seclevelm, 'map' ],
9612: [$seclevel, 'course' ],
9613: [$courselevelr,'resource']));
9614: if (defined($coursereply)) { return &get_reply($coursereply); }
9615:
9616: # ------------------------------------------------------ third, check map parms
9617: my %parmhash=();
9618: my $thisparm='';
9619: if (tie(%parmhash,'GDBM_File',
9620: $env{'request.course.fn'}.'_parms.db',
9621: &GDBM_READER(),0640)) {
9622: $thisparm=$parmhash{$symbparm};
9623: untie(%parmhash);
9624: }
9625: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9626: }
9627: # ------------------------------------------ fourth, look in resource metadata
9628:
9629: $spacequalifierrest=~s/\./\_/;
9630: my $filename;
9631: if (!$symbparm) { $symbparm=&symbread(); }
9632: if ($symbparm) {
9633: $filename=(&decode_symb($symbparm))[2];
9634: } else {
9635: $filename=$env{'request.filename'};
9636: }
9637: my $metadata=&metadata($filename,$spacequalifierrest);
9638: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9639: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9640: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9641:
9642: # ---------------------------------------------- fourth, look in rest of course
9643: if ($symbparm && defined($courseid) &&
9644: $courseid eq $env{'request.course.id'}) {
9645: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9646: $env{'course.'.$courseid.'.domain'},
9647: 'course',
9648: ([$courselevelm,'map' ],
9649: [$courselevel, 'course']));
9650: if (defined($coursereply)) { return &get_reply($coursereply); }
9651: }
9652: # ------------------------------------------------------------------ Cascade up
9653: unless ($space eq '0') {
9654: my @parts=split(/_/,$space);
9655: my $id=pop(@parts);
9656: my $part=join('_',@parts);
9657: if ($part eq '') { $part='0'; }
9658: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9659: $symbparm,$udom,$uname,$section,1);
9660: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9661: }
9662: if ($recurse) { return undef; }
9663: my $pack_def=&packages_tab_default($filename,$varname);
9664: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9665: # ---------------------------------------------------- Any other user namespace
9666: } elsif ($realm eq 'environment') {
9667: # ----------------------------------------------------------------- environment
9668: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9669: return $env{'environment.'.$spacequalifierrest};
9670: } else {
9671: if ($uname eq 'anonymous' && $udom eq '') {
9672: return '';
9673: }
9674: my %returnhash=&userenvironment($udom,$uname,
9675: $spacequalifierrest);
9676: return $returnhash{$spacequalifierrest};
9677: }
9678: } elsif ($realm eq 'system') {
9679: # ----------------------------------------------------------------- system.time
9680: if ($space eq 'time') {
9681: return time;
9682: }
9683: } elsif ($realm eq 'server') {
9684: # ----------------------------------------------------------------- system.time
9685: if ($space eq 'name') {
9686: return $ENV{'SERVER_NAME'};
9687: }
9688: }
9689: return '';
9690: }
9691:
9692: sub get_reply {
9693: my ($reply_value) = @_;
9694: if (ref($reply_value) eq 'ARRAY') {
9695: if (wantarray) {
9696: return @$reply_value;
9697: }
9698: return $reply_value->[0];
9699: } else {
9700: return $reply_value;
9701: }
9702: }
9703:
9704: sub check_group_parms {
9705: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9706: my @groupitems = ();
9707: my $resultitem;
9708: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9709: foreach my $group (@{$groups}) {
9710: foreach my $level (@levels) {
9711: my $item = $courseid.'.['.$group.'].'.$level->[0];
9712: push(@groupitems,[$item,$level->[1]]);
9713: }
9714: }
9715: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9716: $env{'course.'.$courseid.'.domain'},
9717: 'course',@groupitems);
9718: return $coursereply;
9719: }
9720:
9721: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9722: my ($courseid,@groups) = @_;
9723: @groups = sort(@groups);
9724: return @groups;
9725: }
9726:
9727: sub packages_tab_default {
9728: my ($uri,$varname)=@_;
9729: my (undef,$part,$name)=split(/\./,$varname);
9730:
9731: my (@extension,@specifics,$do_default);
9732: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9733: my ($pack_type,$pack_part)=split(/_/,$package,2);
9734: if ($pack_type eq 'default') {
9735: $do_default=1;
9736: } elsif ($pack_type eq 'extension') {
9737: push(@extension,[$package,$pack_type,$pack_part]);
9738: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9739: # only look at packages defaults for packages that this id is
9740: push(@specifics,[$package,$pack_type,$pack_part]);
9741: }
9742: }
9743: # first look for a package that matches the requested part id
9744: foreach my $package (@specifics) {
9745: my (undef,$pack_type,$pack_part)=@{$package};
9746: next if ($pack_part ne $part);
9747: if (defined($packagetab{"$pack_type&$name&default"})) {
9748: return $packagetab{"$pack_type&$name&default"};
9749: }
9750: }
9751: # look for any possible matching non extension_ package
9752: foreach my $package (@specifics) {
9753: my (undef,$pack_type,$pack_part)=@{$package};
9754: if (defined($packagetab{"$pack_type&$name&default"})) {
9755: return $packagetab{"$pack_type&$name&default"};
9756: }
9757: if ($pack_type eq 'part') { $pack_part='0'; }
9758: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9759: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9760: }
9761: }
9762: # look for any posible extension_ match
9763: foreach my $package (@extension) {
9764: my ($package,$pack_type)=@{$package};
9765: if (defined($packagetab{"$pack_type&$name&default"})) {
9766: return $packagetab{"$pack_type&$name&default"};
9767: }
9768: if (defined($packagetab{$package."&$name&default"})) {
9769: return $packagetab{$package."&$name&default"};
9770: }
9771: }
9772: # look for a global default setting
9773: if ($do_default && defined($packagetab{"default&$name&default"})) {
9774: return $packagetab{"default&$name&default"};
9775: }
9776: return undef;
9777: }
9778:
9779: sub add_prefix_and_part {
9780: my ($prefix,$part)=@_;
9781: my $keyroot;
9782: if (defined($prefix) && $prefix !~ /^__/) {
9783: # prefix that has a part already
9784: $keyroot=$prefix;
9785: } elsif (defined($prefix)) {
9786: # prefix that is missing a part
9787: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9788: } else {
9789: # no prefix at all
9790: if (defined($part)) { $keyroot='_'.$part; }
9791: }
9792: return $keyroot;
9793: }
9794:
9795: # ---------------------------------------------------------------- Get metadata
9796:
9797: my %metaentry;
9798: my %importedpartids;
9799: sub metadata {
9800: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9801: $uri=&declutter($uri);
9802: # if it is a non metadata possible uri return quickly
9803: if (($uri eq '') ||
9804: (($uri =~ m|^/*adm/|) &&
9805: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9806: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9807: return undef;
9808: }
9809: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9810: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9811: return undef;
9812: }
9813: my $filename=$uri;
9814: $uri=~s/\.meta$//;
9815: #
9816: # Is the metadata already cached?
9817: # Look at timestamp of caching
9818: # Everything is cached by the main uri, libraries are never directly cached
9819: #
9820: if (!defined($liburi)) {
9821: my ($result,$cached)=&is_cached_new('meta',$uri);
9822: if (defined($cached)) { return $result->{':'.$what}; }
9823: }
9824: {
9825: # Imported parts would go here
9826: my %importedids=();
9827: my @origfileimportpartids=();
9828: my $importedparts=0;
9829: #
9830: # Is this a recursive call for a library?
9831: #
9832: # if (! exists($metacache{$uri})) {
9833: # $metacache{$uri}={};
9834: # }
9835: my $cachetime = 60*60;
9836: if ($liburi) {
9837: $liburi=&declutter($liburi);
9838: $filename=$liburi;
9839: } else {
9840: &devalidate_cache_new('meta',$uri);
9841: undef(%metaentry);
9842: }
9843: my %metathesekeys=();
9844: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9845: my $metastring;
9846: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9847: my $which = &hreflocation('','/'.($liburi || $uri));
9848: $metastring =
9849: &Apache::lonnet::ssi_body($which,
9850: ('grade_target' => 'meta'));
9851: $cachetime = 1; # only want this cached in the child not long term
9852: } elsif (($uri !~ m -^(editupload)/-) &&
9853: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9854: my $file=&filelocation('',&clutter($filename));
9855: #push(@{$metaentry{$uri.'.file'}},$file);
9856: $metastring=&getfile($file);
9857: }
9858: my $parser=HTML::LCParser->new(\$metastring);
9859: my $token;
9860: undef %metathesekeys;
9861: while ($token=$parser->get_token) {
9862: if ($token->[0] eq 'S') {
9863: if (defined($token->[2]->{'package'})) {
9864: #
9865: # This is a package - get package info
9866: #
9867: my $package=$token->[2]->{'package'};
9868: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9869: if (defined($token->[2]->{'id'})) {
9870: $keyroot.='_'.$token->[2]->{'id'};
9871: }
9872: if ($metaentry{':packages'}) {
9873: $metaentry{':packages'}.=','.$package.$keyroot;
9874: } else {
9875: $metaentry{':packages'}=$package.$keyroot;
9876: }
9877: foreach my $pack_entry (keys(%packagetab)) {
9878: my $part=$keyroot;
9879: $part=~s/^\_//;
9880: if ($pack_entry=~/^\Q$package\E\&/ ||
9881: $pack_entry=~/^\Q$package\E_0\&/) {
9882: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9883: # ignore package.tab specified default values
9884: # here &package_tab_default() will fetch those
9885: if ($subp eq 'default') { next; }
9886: my $value=$packagetab{$pack_entry};
9887: my $unikey;
9888: if ($pack =~ /_0$/) {
9889: $unikey='parameter_0_'.$name;
9890: $part=0;
9891: } else {
9892: $unikey='parameter'.$keyroot.'_'.$name;
9893: }
9894: if ($subp eq 'display') {
9895: $value.=' [Part: '.$part.']';
9896: }
9897: $metaentry{':'.$unikey.'.part'}=$part;
9898: $metathesekeys{$unikey}=1;
9899: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9900: $metaentry{':'.$unikey.'.'.$subp}=$value;
9901: }
9902: if (defined($metaentry{':'.$unikey.'.default'})) {
9903: $metaentry{':'.$unikey}=
9904: $metaentry{':'.$unikey.'.default'};
9905: }
9906: }
9907: }
9908: } else {
9909: #
9910: # This is not a package - some other kind of start tag
9911: #
9912: my $entry=$token->[1];
9913: my $unikey='';
9914:
9915: if ($entry eq 'import') {
9916: #
9917: # Importing a library here
9918: #
9919: my $location=$parser->get_text('/import');
9920: my $dir=$filename;
9921: $dir=~s|[^/]*$||;
9922: $location=&filelocation($dir,$location);
9923:
9924: my $importmode=$token->[2]->{'importmode'};
9925: if ($importmode eq 'problem') {
9926: # Import as problem/response
9927: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9928: } elsif ($importmode eq 'part') {
9929: # Import as part(s)
9930: $importedparts=1;
9931: # We need to get the original file and the imported file to get the part order correct
9932: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9933: # Load and inspect original file
9934: if ($#origfileimportpartids<0) {
9935: undef(%importedpartids);
9936: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9937: my $origfile=&getfile($origfilelocation);
9938: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9939: }
9940:
9941: # Load and inspect imported file
9942: my $impfile=&getfile($location);
9943: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9944: if ($#impfilepartids>=0) {
9945: # This problem had parts
9946: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9947: } else {
9948: # Importing by turning a single problem into a problem part
9949: # It gets the import-tags ID as part-ID
9950: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9951: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9952: }
9953: } else {
9954: # Normal import
9955: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9956: if (defined($token->[2]->{'id'})) {
9957: $unikey.='_'.$token->[2]->{'id'};
9958: }
9959: }
9960:
9961: if ($depthcount<20) {
9962: my $metadata =
9963: &metadata($uri,'keys', $location,$unikey,
9964: $depthcount+1);
9965: foreach my $meta (split(',',$metadata)) {
9966: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9967: $metathesekeys{$meta}=1;
9968: }
9969:
9970: }
9971: } else {
9972: #
9973: # Not importing, some other kind of non-package, non-library start tag
9974: #
9975: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9976: if (defined($token->[2]->{'id'})) {
9977: $unikey.='_'.$token->[2]->{'id'};
9978: }
9979: if (defined($token->[2]->{'name'})) {
9980: $unikey.='_'.$token->[2]->{'name'};
9981: }
9982: $metathesekeys{$unikey}=1;
9983: foreach my $param (@{$token->[3]}) {
9984: $metaentry{':'.$unikey.'.'.$param} =
9985: $token->[2]->{$param};
9986: }
9987: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9988: my $default=$metaentry{':'.$unikey.'.default'};
9989: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9990: # only ws inside the tag, and not in default, so use default
9991: # as value
9992: $metaentry{':'.$unikey}=$default;
9993: } elsif ( $internaltext =~ /\S/ ) {
9994: # something interesting inside the tag
9995: $metaentry{':'.$unikey}=$internaltext;
9996: } else {
9997: # no interesting values, don't set a default
9998: }
9999: # end of not-a-package not-a-library import
10000: }
10001: # end of not-a-package start tag
10002: }
10003: # the next is the end of "start tag"
10004: }
10005: }
10006: my ($extension) = ($uri =~ /\.(\w+)$/);
10007: $extension = lc($extension);
10008: if ($extension eq 'htm') { $extension='html'; }
10009:
10010: foreach my $key (keys(%packagetab)) {
10011: #no specific packages #how's our extension
10012: if ($key!~/^extension_\Q$extension\E&/) { next; }
10013: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10014: \%metathesekeys);
10015: }
10016:
10017: if (!exists($metaentry{':packages'})
10018: || $packagetab{"import_defaults&extension_$extension"}) {
10019: foreach my $key (keys(%packagetab)) {
10020: #no specific packages well let's get default then
10021: if ($key!~/^default&/) { next; }
10022: &metadata_create_package_def($uri,$key,'default',
10023: \%metathesekeys);
10024: }
10025: }
10026: # are there custom rights to evaluate
10027: if ($metaentry{':copyright'} eq 'custom') {
10028:
10029: #
10030: # Importing a rights file here
10031: #
10032: unless ($depthcount) {
10033: my $location=$metaentry{':customdistributionfile'};
10034: my $dir=$filename;
10035: $dir=~s|[^/]*$||;
10036: $location=&filelocation($dir,$location);
10037: my $rights_metadata =
10038: &metadata($uri,'keys',$location,'_rights',
10039: $depthcount+1);
10040: foreach my $rights (split(',',$rights_metadata)) {
10041: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10042: $metathesekeys{$rights}=1;
10043: }
10044: }
10045: }
10046: # uniqifiy package listing
10047: my %seen;
10048: my @uniq_packages =
10049: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10050: $metaentry{':packages'} = join(',',@uniq_packages);
10051:
10052: if ($importedparts) {
10053: # We had imported parts and need to rebuild partorder
10054: $metaentry{':partorder'}='';
10055: $metathesekeys{'partorder'}=1;
10056: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10057: if ($origfileimportpartids[$index] eq 'part') {
10058: # original part, part of the problem
10059: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10060: } else {
10061: # we have imported parts at this position
10062: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10063: }
10064: }
10065: $metaentry{':partorder'}=~s/^\,//;
10066: }
10067:
10068: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10069: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10070: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10071: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10072: # this is the end of "was not already recently cached
10073: }
10074: return $metaentry{':'.$what};
10075: }
10076:
10077: sub metadata_create_package_def {
10078: my ($uri,$key,$package,$metathesekeys)=@_;
10079: my ($pack,$name,$subp)=split(/\&/,$key);
10080: if ($subp eq 'default') { next; }
10081:
10082: if (defined($metaentry{':packages'})) {
10083: $metaentry{':packages'}.=','.$package;
10084: } else {
10085: $metaentry{':packages'}=$package;
10086: }
10087: my $value=$packagetab{$key};
10088: my $unikey;
10089: $unikey='parameter_0_'.$name;
10090: $metaentry{':'.$unikey.'.part'}=0;
10091: $$metathesekeys{$unikey}=1;
10092: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10093: $metaentry{':'.$unikey.'.'.$subp}=$value;
10094: }
10095: if (defined($metaentry{':'.$unikey.'.default'})) {
10096: $metaentry{':'.$unikey}=
10097: $metaentry{':'.$unikey.'.default'};
10098: }
10099: }
10100:
10101: sub metadata_generate_part0 {
10102: my ($metadata,$metacache,$uri) = @_;
10103: my %allnames;
10104: foreach my $metakey (keys(%$metadata)) {
10105: if ($metakey=~/^parameter\_(.*)/) {
10106: my $part=$$metacache{':'.$metakey.'.part'};
10107: my $name=$$metacache{':'.$metakey.'.name'};
10108: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10109: $allnames{$name}=$part;
10110: }
10111: }
10112: }
10113: foreach my $name (keys(%allnames)) {
10114: $$metadata{"parameter_0_$name"}=1;
10115: my $key=":parameter_0_$name";
10116: $$metacache{"$key.part"}='0';
10117: $$metacache{"$key.name"}=$name;
10118: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10119: $allnames{$name}.'_'.$name.
10120: '.type'};
10121: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10122: '.display'};
10123: my $expr='[Part: '.$allnames{$name}.']';
10124: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10125: $$metacache{"$key.display"}=$olddis;
10126: }
10127: }
10128:
10129: # ------------------------------------------------------ Devalidate title cache
10130:
10131: sub devalidate_title_cache {
10132: my ($url)=@_;
10133: if (!$env{'request.course.id'}) { return; }
10134: my $symb=&symbread($url);
10135: if (!$symb) { return; }
10136: my $key=$env{'request.course.id'}."\0".$symb;
10137: &devalidate_cache_new('title',$key);
10138: }
10139:
10140: # ------------------------------------------------- Get the title of a course
10141:
10142: sub current_course_title {
10143: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10144: }
10145: # ------------------------------------------------- Get the title of a resource
10146:
10147: sub gettitle {
10148: my $urlsymb=shift;
10149: my $symb=&symbread($urlsymb);
10150: if ($symb) {
10151: my $key=$env{'request.course.id'}."\0".$symb;
10152: my ($result,$cached)=&is_cached_new('title',$key);
10153: if (defined($cached)) {
10154: return $result;
10155: }
10156: my ($map,$resid,$url)=&decode_symb($symb);
10157: my $title='';
10158: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10159: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10160: } else {
10161: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10162: &GDBM_READER(),0640)) {
10163: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10164: $title=$bighash{'title_'.$mapid.'.'.$resid};
10165: untie(%bighash);
10166: }
10167: }
10168: $title=~s/\&colon\;/\:/gs;
10169: if ($title) {
10170: # Remember both $symb and $title for dynamic metadata
10171: $accesshash{$symb.'___crstitle'}=$title;
10172: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10173: # Cache this title and then return it
10174: return &do_cache_new('title',$key,$title,600);
10175: }
10176: $urlsymb=$url;
10177: }
10178: my $title=&metadata($urlsymb,'title');
10179: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10180: return $title;
10181: }
10182:
10183: sub get_slot {
10184: my ($which,$cnum,$cdom)=@_;
10185: if (!$cnum || !$cdom) {
10186: (undef,my $courseid)=&whichuser();
10187: $cdom=$env{'course.'.$courseid.'.domain'};
10188: $cnum=$env{'course.'.$courseid.'.num'};
10189: }
10190: my $key=join("\0",'slots',$cdom,$cnum,$which);
10191: my %slotinfo;
10192: if (exists($remembered{$key})) {
10193: $slotinfo{$which} = $remembered{$key};
10194: } else {
10195: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10196: &Apache::lonhomework::showhash(%slotinfo);
10197: my ($tmp)=keys(%slotinfo);
10198: if ($tmp=~/^error:/) { return (); }
10199: $remembered{$key} = $slotinfo{$which};
10200: }
10201: if (ref($slotinfo{$which}) eq 'HASH') {
10202: return %{$slotinfo{$which}};
10203: }
10204: return $slotinfo{$which};
10205: }
10206:
10207: sub get_reservable_slots {
10208: my ($cnum,$cdom,$uname,$udom) = @_;
10209: my $now = time;
10210: my $reservable_info;
10211: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10212: if (exists($remembered{$key})) {
10213: $reservable_info = $remembered{$key};
10214: } else {
10215: my %resv;
10216: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10217: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10218: $reservable_info = \%resv;
10219: $remembered{$key} = $reservable_info;
10220: }
10221: return $reservable_info;
10222: }
10223:
10224: sub get_course_slots {
10225: my ($cnum,$cdom) = @_;
10226: my $hashid=$cnum.':'.$cdom;
10227: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10228: if (defined($cached)) {
10229: if (ref($result) eq 'HASH') {
10230: return %{$result};
10231: }
10232: } else {
10233: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10234: my ($tmp) = keys(%slots);
10235: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10236: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
10237: return %slots;
10238: }
10239: }
10240: return;
10241: }
10242:
10243: sub devalidate_slots_cache {
10244: my ($cnum,$cdom)=@_;
10245: my $hashid=$cnum.':'.$cdom;
10246: &devalidate_cache_new('allslots',$hashid);
10247: }
10248:
10249: sub get_coursechange {
10250: my ($cdom,$cnum) = @_;
10251: if ($cdom eq '' || $cnum eq '') {
10252: return unless ($env{'request.course.id'});
10253: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10254: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10255: }
10256: my $hashid=$cdom.'_'.$cnum;
10257: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10258: if ((defined($cached)) && ($change ne '')) {
10259: return $change;
10260: } else {
10261: my %crshash;
10262: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10263: if ($crshash{'internal.contentchange'} eq '') {
10264: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10265: if ($change eq '') {
10266: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10267: $change = $crshash{'internal.created'};
10268: }
10269: } else {
10270: $change = $crshash{'internal.contentchange'};
10271: }
10272: my $cachetime = 600;
10273: &do_cache_new('crschange',$hashid,$change,$cachetime);
10274: }
10275: return $change;
10276: }
10277:
10278: sub devalidate_coursechange_cache {
10279: my ($cnum,$cdom)=@_;
10280: my $hashid=$cnum.':'.$cdom;
10281: &devalidate_cache_new('crschange',$hashid);
10282: }
10283:
10284: # ------------------------------------------------- Update symbolic store links
10285:
10286: sub symblist {
10287: my ($mapname,%newhash)=@_;
10288: $mapname=&deversion(&declutter($mapname));
10289: my %hash;
10290: if (($env{'request.course.fn'}) && (%newhash)) {
10291: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10292: &GDBM_WRCREAT(),0640)) {
10293: foreach my $url (keys(%newhash)) {
10294: next if ($url eq 'last_known'
10295: && $env{'form.no_update_last_known'});
10296: $hash{declutter($url)}=&encode_symb($mapname,
10297: $newhash{$url}->[1],
10298: $newhash{$url}->[0]);
10299: }
10300: if (untie(%hash)) {
10301: return 'ok';
10302: }
10303: }
10304: }
10305: return 'error';
10306: }
10307:
10308: # --------------------------------------------------------------- Verify a symb
10309:
10310: sub symbverify {
10311: my ($symb,$thisurl,$encstate)=@_;
10312: my $thisfn=$thisurl;
10313: $thisfn=&declutter($thisfn);
10314: # direct jump to resource in page or to a sequence - will construct own symbs
10315: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10316: # check URL part
10317: my ($map,$resid,$url)=&decode_symb($symb);
10318:
10319: unless ($url eq $thisfn) { return 0; }
10320:
10321: $symb=&symbclean($symb);
10322: $thisurl=&deversion($thisurl);
10323: $thisfn=&deversion($thisfn);
10324:
10325: my %bighash;
10326: my $okay=0;
10327:
10328: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10329: &GDBM_READER(),0640)) {
10330: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10331: $thisurl =~ s/\?.+$//;
10332: }
10333: my $ids=$bighash{'ids_'.&clutter($thisurl)};
10334: unless ($ids) {
10335: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10336: $ids=$bighash{$idkey};
10337: }
10338: if ($ids) {
10339: # ------------------------------------------------------------------- Has ID(s)
10340: foreach my $id (split(/\,/,$ids)) {
10341: my ($mapid,$resid)=split(/\./,$id);
10342: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10343: $symb =~ s/\?.+$//;
10344: }
10345: if (
10346: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10347: eq $symb) {
10348: if (ref($encstate)) {
10349: $$encstate = $bighash{'encrypted_'.$id};
10350: }
10351: if (($env{'request.role.adv'}) ||
10352: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10353: ($thisurl eq '/adm/navmaps')) {
10354: $okay=1;
10355: }
10356: }
10357: }
10358: }
10359: untie(%bighash);
10360: }
10361: return $okay;
10362: }
10363:
10364: # --------------------------------------------------------------- Clean-up symb
10365:
10366: sub symbclean {
10367: my $symb=shift;
10368: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10369: # remove version from map
10370: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10371:
10372: # remove version from URL
10373: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10374:
10375: # remove wrapper
10376:
10377: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10378: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10379: return $symb;
10380: }
10381:
10382: # ---------------------------------------------- Split symb to find map and url
10383:
10384: sub encode_symb {
10385: my ($map,$resid,$url)=@_;
10386: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10387: }
10388:
10389: sub decode_symb {
10390: my $symb=shift;
10391: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10392: my ($map,$resid,$url)=split(/___/,$symb);
10393: return (&fixversion($map),$resid,&fixversion($url));
10394: }
10395:
10396: sub fixversion {
10397: my $fn=shift;
10398: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10399: my %bighash;
10400: my $uri=&clutter($fn);
10401: my $key=$env{'request.course.id'}.'_'.$uri;
10402: # is this cached?
10403: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10404: if (defined($cached)) { return $result; }
10405: # unfortunately not cached, or expired
10406: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10407: &GDBM_READER(),0640)) {
10408: if ($bighash{'version_'.$uri}) {
10409: my $version=$bighash{'version_'.$uri};
10410: unless (($version eq 'mostrecent') ||
10411: ($version==&getversion($uri))) {
10412: $uri=~s/\.(\w+)$/\.$version\.$1/;
10413: }
10414: }
10415: untie %bighash;
10416: }
10417: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10418: }
10419:
10420: sub deversion {
10421: my $url=shift;
10422: $url=~s/\.\d+\.(\w+)$/\.$1/;
10423: return $url;
10424: }
10425:
10426: # ------------------------------------------------------ Return symb list entry
10427:
10428: sub symbread {
10429: my ($thisfn,$donotrecurse)=@_;
10430: my $cache_str='request.symbread.cached.'.$thisfn;
10431: if (defined($env{$cache_str})) {
10432: if (($thisfn) || ($env{$cache_str} ne '')) {
10433: return $env{$cache_str};
10434: }
10435: }
10436: # no filename provided? try from environment
10437: unless ($thisfn) {
10438: if ($env{'request.symb'}) {
10439: return $env{$cache_str}=&symbclean($env{'request.symb'});
10440: }
10441: $thisfn=$env{'request.filename'};
10442: }
10443: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10444: # is that filename actually a symb? Verify, clean, and return
10445: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10446: if (&symbverify($thisfn,$1)) {
10447: return $env{$cache_str}=&symbclean($thisfn);
10448: }
10449: }
10450: $thisfn=declutter($thisfn);
10451: my %hash;
10452: my %bighash;
10453: my $syval='';
10454: if (($env{'request.course.fn'}) && ($thisfn)) {
10455: my $targetfn = $thisfn;
10456: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10457: $targetfn = 'adm/wrapper/'.$thisfn;
10458: }
10459: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10460: $targetfn=$1;
10461: }
10462: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10463: &GDBM_READER(),0640)) {
10464: $syval=$hash{$targetfn};
10465: untie(%hash);
10466: }
10467: # ---------------------------------------------------------- There was an entry
10468: if ($syval) {
10469: #unless ($syval=~/\_\d+$/) {
10470: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10471: #&appenv({'request.ambiguous' => $thisfn});
10472: #return $env{$cache_str}='';
10473: #}
10474: #$syval.=$1;
10475: #}
10476: } else {
10477: # ------------------------------------------------------- Was not in symb table
10478: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10479: &GDBM_READER(),0640)) {
10480: # ---------------------------------------------- Get ID(s) for current resource
10481: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10482: unless ($ids) {
10483: $ids=$bighash{'ids_/'.$thisfn};
10484: }
10485: unless ($ids) {
10486: # alias?
10487: $ids=$bighash{'mapalias_'.$thisfn};
10488: }
10489: if ($ids) {
10490: # ------------------------------------------------------------------- Has ID(s)
10491: my @possibilities=split(/\,/,$ids);
10492: if ($#possibilities==0) {
10493: # ----------------------------------------------- There is only one possibility
10494: my ($mapid,$resid)=split(/\./,$ids);
10495: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10496: $resid,$thisfn);
10497: } elsif (!$donotrecurse) {
10498: # ------------------------------------------ There is more than one possibility
10499: my $realpossible=0;
10500: foreach my $id (@possibilities) {
10501: my $file=$bighash{'src_'.$id};
10502: if (&allowed('bre',$file)) {
10503: my ($mapid,$resid)=split(/\./,$id);
10504: if ($bighash{'map_type_'.$mapid} ne 'page') {
10505: $realpossible++;
10506: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10507: $resid,$thisfn);
10508: }
10509: }
10510: }
10511: if ($realpossible!=1) { $syval=''; }
10512: } else {
10513: $syval='';
10514: }
10515: }
10516: untie(%bighash)
10517: }
10518: }
10519: if ($syval) {
10520: return $env{$cache_str}=$syval;
10521: }
10522: }
10523: &appenv({'request.ambiguous' => $thisfn});
10524: return $env{$cache_str}='';
10525: }
10526:
10527: # ---------------------------------------------------------- Return random seed
10528:
10529: sub numval {
10530: my $txt=shift;
10531: $txt=~tr/A-J/0-9/;
10532: $txt=~tr/a-j/0-9/;
10533: $txt=~tr/K-T/0-9/;
10534: $txt=~tr/k-t/0-9/;
10535: $txt=~tr/U-Z/0-5/;
10536: $txt=~tr/u-z/0-5/;
10537: $txt=~s/\D//g;
10538: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10539: return int($txt);
10540: }
10541:
10542: sub numval2 {
10543: my $txt=shift;
10544: $txt=~tr/A-J/0-9/;
10545: $txt=~tr/a-j/0-9/;
10546: $txt=~tr/K-T/0-9/;
10547: $txt=~tr/k-t/0-9/;
10548: $txt=~tr/U-Z/0-5/;
10549: $txt=~tr/u-z/0-5/;
10550: $txt=~s/\D//g;
10551: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10552: my $total;
10553: foreach my $val (@txts) { $total+=$val; }
10554: if ($_64bit) { if ($total > 2**32) { return -1; } }
10555: return int($total);
10556: }
10557:
10558: sub numval3 {
10559: use integer;
10560: my $txt=shift;
10561: $txt=~tr/A-J/0-9/;
10562: $txt=~tr/a-j/0-9/;
10563: $txt=~tr/K-T/0-9/;
10564: $txt=~tr/k-t/0-9/;
10565: $txt=~tr/U-Z/0-5/;
10566: $txt=~tr/u-z/0-5/;
10567: $txt=~s/\D//g;
10568: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10569: my $total;
10570: foreach my $val (@txts) { $total+=$val; }
10571: if ($_64bit) { $total=(($total<<32)>>32); }
10572: return $total;
10573: }
10574:
10575: sub digest {
10576: my ($data)=@_;
10577: my $digest=&Digest::MD5::md5($data);
10578: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10579: my ($e,$f);
10580: {
10581: use integer;
10582: $e=($a+$b);
10583: $f=($c+$d);
10584: if ($_64bit) {
10585: $e=(($e<<32)>>32);
10586: $f=(($f<<32)>>32);
10587: }
10588: }
10589: if (wantarray) {
10590: return ($e,$f);
10591: } else {
10592: my $g;
10593: {
10594: use integer;
10595: $g=($e+$f);
10596: if ($_64bit) {
10597: $g=(($g<<32)>>32);
10598: }
10599: }
10600: return $g;
10601: }
10602: }
10603:
10604: sub latest_rnd_algorithm_id {
10605: return '64bit5';
10606: }
10607:
10608: sub get_rand_alg {
10609: my ($courseid)=@_;
10610: if (!$courseid) { $courseid=(&whichuser())[1]; }
10611: if ($courseid) {
10612: return $env{"course.$courseid.rndseed"};
10613: }
10614: return &latest_rnd_algorithm_id();
10615: }
10616:
10617: sub validCODE {
10618: my ($CODE)=@_;
10619: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10620: return 0;
10621: }
10622:
10623: sub getCODE {
10624: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10625: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10626: defined($Apache::lonhomework::parsing_a_task) ) &&
10627: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10628: return $Apache::lonhomework::history{'resource.CODE'};
10629: }
10630: return undef;
10631: }
10632: #
10633: # Determines the random seed for a specific context:
10634: #
10635: # parameters:
10636: # symb - in course context the symb for the seed.
10637: # course_id - The course id of the form domain_coursenum.
10638: # domain - Domain for the user.
10639: # course - Course for the user.
10640: # cenv - environment of the course.
10641: #
10642: # NOTE:
10643: # All parameters are picked out of the environment if missing
10644: # or not defined.
10645: # If a symb cannot be determined the current time is used instead.
10646: #
10647: # For a given well defined symb, courside, domain, username,
10648: # and course environment, the seed is reproducible.
10649: #
10650: sub rndseed {
10651: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10652: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10653: if (!defined($symb)) {
10654: unless ($symb=$wsymb) { return time; }
10655: }
10656: if (!defined $courseid) {
10657: $courseid=$wcourseid;
10658: }
10659: if (!defined $domain) { $domain=$wdomain; }
10660: if (!defined $username) { $username=$wusername }
10661:
10662: my $which;
10663: if (defined($cenv->{'rndseed'})) {
10664: $which = $cenv->{'rndseed'};
10665: } else {
10666: $which =&get_rand_alg($courseid);
10667: }
10668: if (defined(&getCODE())) {
10669:
10670: if ($which eq '64bit5') {
10671: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10672: } elsif ($which eq '64bit4') {
10673: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10674: } else {
10675: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10676: }
10677: } elsif ($which eq '64bit5') {
10678: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10679: } elsif ($which eq '64bit4') {
10680: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10681: } elsif ($which eq '64bit3') {
10682: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10683: } elsif ($which eq '64bit2') {
10684: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10685: } elsif ($which eq '64bit') {
10686: return &rndseed_64bit($symb,$courseid,$domain,$username);
10687: }
10688: return &rndseed_32bit($symb,$courseid,$domain,$username);
10689: }
10690:
10691: sub rndseed_32bit {
10692: my ($symb,$courseid,$domain,$username)=@_;
10693: {
10694: use integer;
10695: my $symbchck=unpack("%32C*",$symb) << 27;
10696: my $symbseed=numval($symb) << 22;
10697: my $namechck=unpack("%32C*",$username) << 17;
10698: my $nameseed=numval($username) << 12;
10699: my $domainseed=unpack("%32C*",$domain) << 7;
10700: my $courseseed=unpack("%32C*",$courseid);
10701: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10702: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10703: #&logthis("rndseed :$num:$symb");
10704: if ($_64bit) { $num=(($num<<32)>>32); }
10705: return $num;
10706: }
10707: }
10708:
10709: sub rndseed_64bit {
10710: my ($symb,$courseid,$domain,$username)=@_;
10711: {
10712: use integer;
10713: my $symbchck=unpack("%32S*",$symb) << 21;
10714: my $symbseed=numval($symb) << 10;
10715: my $namechck=unpack("%32S*",$username);
10716:
10717: my $nameseed=numval($username) << 21;
10718: my $domainseed=unpack("%32S*",$domain) << 10;
10719: my $courseseed=unpack("%32S*",$courseid);
10720:
10721: my $num1=$symbchck+$symbseed+$namechck;
10722: my $num2=$nameseed+$domainseed+$courseseed;
10723: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10724: #&logthis("rndseed :$num:$symb");
10725: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10726: return "$num1,$num2";
10727: }
10728: }
10729:
10730: sub rndseed_64bit2 {
10731: my ($symb,$courseid,$domain,$username)=@_;
10732: {
10733: use integer;
10734: # strings need to be an even # of cahracters long, it it is odd the
10735: # last characters gets thrown away
10736: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10737: my $symbseed=numval($symb) << 10;
10738: my $namechck=unpack("%32S*",$username.' ');
10739:
10740: my $nameseed=numval($username) << 21;
10741: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10742: my $courseseed=unpack("%32S*",$courseid.' ');
10743:
10744: my $num1=$symbchck+$symbseed+$namechck;
10745: my $num2=$nameseed+$domainseed+$courseseed;
10746: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10747: #&logthis("rndseed :$num:$symb");
10748: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10749: return "$num1,$num2";
10750: }
10751: }
10752:
10753: sub rndseed_64bit3 {
10754: my ($symb,$courseid,$domain,$username)=@_;
10755: {
10756: use integer;
10757: # strings need to be an even # of cahracters long, it it is odd the
10758: # last characters gets thrown away
10759: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10760: my $symbseed=numval2($symb) << 10;
10761: my $namechck=unpack("%32S*",$username.' ');
10762:
10763: my $nameseed=numval2($username) << 21;
10764: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10765: my $courseseed=unpack("%32S*",$courseid.' ');
10766:
10767: my $num1=$symbchck+$symbseed+$namechck;
10768: my $num2=$nameseed+$domainseed+$courseseed;
10769: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10770: #&logthis("rndseed :$num1:$num2:$_64bit");
10771: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10772:
10773: return "$num1:$num2";
10774: }
10775: }
10776:
10777: sub rndseed_64bit4 {
10778: my ($symb,$courseid,$domain,$username)=@_;
10779: {
10780: use integer;
10781: # strings need to be an even # of cahracters long, it it is odd the
10782: # last characters gets thrown away
10783: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10784: my $symbseed=numval3($symb) << 10;
10785: my $namechck=unpack("%32S*",$username.' ');
10786:
10787: my $nameseed=numval3($username) << 21;
10788: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10789: my $courseseed=unpack("%32S*",$courseid.' ');
10790:
10791: my $num1=$symbchck+$symbseed+$namechck;
10792: my $num2=$nameseed+$domainseed+$courseseed;
10793: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10794: #&logthis("rndseed :$num1:$num2:$_64bit");
10795: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10796:
10797: return "$num1:$num2";
10798: }
10799: }
10800:
10801: sub rndseed_64bit5 {
10802: my ($symb,$courseid,$domain,$username)=@_;
10803: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10804: return "$num1:$num2";
10805: }
10806:
10807: sub rndseed_CODE_64bit {
10808: my ($symb,$courseid,$domain,$username)=@_;
10809: {
10810: use integer;
10811: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10812: my $symbseed=numval2($symb);
10813: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10814: my $CODEseed=numval(&getCODE());
10815: my $courseseed=unpack("%32S*",$courseid.' ');
10816: my $num1=$symbseed+$CODEchck;
10817: my $num2=$CODEseed+$courseseed+$symbchck;
10818: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10819: #&logthis("rndseed :$num1:$num2:$symb");
10820: if ($_64bit) { $num1=(($num1<<32)>>32); }
10821: if ($_64bit) { $num2=(($num2<<32)>>32); }
10822: return "$num1:$num2";
10823: }
10824: }
10825:
10826: sub rndseed_CODE_64bit4 {
10827: my ($symb,$courseid,$domain,$username)=@_;
10828: {
10829: use integer;
10830: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10831: my $symbseed=numval3($symb);
10832: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10833: my $CODEseed=numval3(&getCODE());
10834: my $courseseed=unpack("%32S*",$courseid.' ');
10835: my $num1=$symbseed+$CODEchck;
10836: my $num2=$CODEseed+$courseseed+$symbchck;
10837: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10838: #&logthis("rndseed :$num1:$num2:$symb");
10839: if ($_64bit) { $num1=(($num1<<32)>>32); }
10840: if ($_64bit) { $num2=(($num2<<32)>>32); }
10841: return "$num1:$num2";
10842: }
10843: }
10844:
10845: sub rndseed_CODE_64bit5 {
10846: my ($symb,$courseid,$domain,$username)=@_;
10847: my $code = &getCODE();
10848: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10849: return "$num1:$num2";
10850: }
10851:
10852: sub setup_random_from_rndseed {
10853: my ($rndseed)=@_;
10854: if ($rndseed =~/([,:])/) {
10855: my ($num1,$num2)=split(/[,:]/,$rndseed);
10856: &Math::Random::random_set_seed(abs($num1),abs($num2));
10857: } else {
10858: &Math::Random::random_set_seed_from_phrase($rndseed);
10859: }
10860: }
10861:
10862: sub latest_receipt_algorithm_id {
10863: return 'receipt3';
10864: }
10865:
10866: sub recunique {
10867: my $fucourseid=shift;
10868: my $unique;
10869: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10870: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10871: $unique=$env{"course.$fucourseid.internal.encseed"};
10872: } else {
10873: $unique=$perlvar{'lonReceipt'};
10874: }
10875: return unpack("%32C*",$unique);
10876: }
10877:
10878: sub recprefix {
10879: my $fucourseid=shift;
10880: my $prefix;
10881: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10882: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10883: $prefix=$env{"course.$fucourseid.internal.encpref"};
10884: } else {
10885: $prefix=$perlvar{'lonHostID'};
10886: }
10887: return unpack("%32C*",$prefix);
10888: }
10889:
10890: sub ireceipt {
10891: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10892:
10893: my $return =&recprefix($fucourseid).'-';
10894:
10895: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10896: $env{'request.state'} eq 'construct') {
10897: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10898: return $return;
10899: }
10900:
10901: my $cuname=unpack("%32C*",$funame);
10902: my $cudom=unpack("%32C*",$fudom);
10903: my $cucourseid=unpack("%32C*",$fucourseid);
10904: my $cusymb=unpack("%32C*",$fusymb);
10905: my $cunique=&recunique($fucourseid);
10906: my $cpart=unpack("%32S*",$part);
10907: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10908:
10909: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10910:
10911: $return.= ($cunique%$cuname+
10912: $cunique%$cudom+
10913: $cusymb%$cuname+
10914: $cusymb%$cudom+
10915: $cucourseid%$cuname+
10916: $cucourseid%$cudom+
10917: $cpart%$cuname+
10918: $cpart%$cudom);
10919: } else {
10920: $return.= ($cunique%$cuname+
10921: $cunique%$cudom+
10922: $cusymb%$cuname+
10923: $cusymb%$cudom+
10924: $cucourseid%$cuname+
10925: $cucourseid%$cudom);
10926: }
10927: return $return;
10928: }
10929:
10930: sub receipt {
10931: my ($part)=@_;
10932: my ($symb,$courseid,$domain,$name) = &whichuser();
10933: return &ireceipt($name,$domain,$courseid,$symb,$part);
10934: }
10935:
10936: sub whichuser {
10937: my ($passedsymb)=@_;
10938: my ($symb,$courseid,$domain,$name,$publicuser);
10939: if (defined($env{'form.grade_symb'})) {
10940: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10941: my $allowed=&allowed('vgr',$tmp_courseid);
10942: if (!$allowed &&
10943: exists($env{'request.course.sec'}) &&
10944: $env{'request.course.sec'} !~ /^\s*$/) {
10945: $allowed=&allowed('vgr',$tmp_courseid.
10946: '/'.$env{'request.course.sec'});
10947: }
10948: if ($allowed) {
10949: ($symb)=&get_env_multiple('form.grade_symb');
10950: $courseid=$tmp_courseid;
10951: ($domain)=&get_env_multiple('form.grade_domain');
10952: ($name)=&get_env_multiple('form.grade_username');
10953: return ($symb,$courseid,$domain,$name,$publicuser);
10954: }
10955: }
10956: if (!$passedsymb) {
10957: $symb=&symbread();
10958: } else {
10959: $symb=$passedsymb;
10960: }
10961: $courseid=$env{'request.course.id'};
10962: $domain=$env{'user.domain'};
10963: $name=$env{'user.name'};
10964: if ($name eq 'public' && $domain eq 'public') {
10965: if (!defined($env{'form.username'})) {
10966: $env{'form.username'}.=time.rand(10000000);
10967: }
10968: $name.=$env{'form.username'};
10969: }
10970: return ($symb,$courseid,$domain,$name,$publicuser);
10971:
10972: }
10973:
10974: # ------------------------------------------------------------ Serves up a file
10975: # returns either the contents of the file or
10976: # -1 if the file doesn't exist
10977: #
10978: # if the target is a file that was uploaded via DOCS,
10979: # a check will be made to see if a current copy exists on the local server,
10980: # if it does this will be served, otherwise a copy will be retrieved from
10981: # the home server for the course and stored in /home/httpd/html/userfiles on
10982: # the local server.
10983:
10984: sub getfile {
10985: my ($file) = @_;
10986: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10987: &repcopy($file);
10988: return &readfile($file);
10989: }
10990:
10991: sub repcopy_userfile {
10992: my ($file)=@_;
10993: my $londocroot = $perlvar{'lonDocRoot'};
10994: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10995: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10996: my ($cdom,$cnum,$filename) =
10997: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10998: my $uri="/uploaded/$cdom/$cnum/$filename";
10999: if (-e "$file") {
11000: # we already have a local copy, check it out
11001: my @fileinfo = stat($file);
11002: my $rtncode;
11003: my $info;
11004: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11005: if ($lwpresp ne 'ok') {
11006: # there is no such file anymore, even though we had a local copy
11007: if ($rtncode eq '404') {
11008: unlink($file);
11009: }
11010: return -1;
11011: }
11012: if ($info < $fileinfo[9]) {
11013: # nice, the file we have is up-to-date, just say okay
11014: return 'ok';
11015: } else {
11016: # the file is outdated, get rid of it
11017: unlink($file);
11018: }
11019: }
11020: # one way or the other, at this point, we don't have the file
11021: # construct the correct path for the file
11022: my @parts = ($cdom,$cnum);
11023: if ($filename =~ m|^(.+)/[^/]+$|) {
11024: push @parts, split(/\//,$1);
11025: }
11026: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11027: foreach my $part (@parts) {
11028: $path .= '/'.$part;
11029: if (!-e $path) {
11030: mkdir($path,0770);
11031: }
11032: }
11033: # now the path exists for sure
11034: # get a user agent
11035: my $ua=new LWP::UserAgent;
11036: my $transferfile=$file.'.in.transfer';
11037: # FIXME: this should flock
11038: if (-e $transferfile) { return 'ok'; }
11039: my $request;
11040: $uri=~s/^\///;
11041: my $homeserver = &homeserver($cnum,$cdom);
11042: my $protocol = $protocol{$homeserver};
11043: $protocol = 'http' if ($protocol ne 'https');
11044: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11045: my $response=$ua->request($request,$transferfile);
11046: # did it work?
11047: if ($response->is_error()) {
11048: unlink($transferfile);
11049: &logthis("Userfile repcopy failed for $uri");
11050: return -1;
11051: }
11052: # worked, rename the transfer file
11053: rename($transferfile,$file);
11054: return 'ok';
11055: }
11056:
11057: sub tokenwrapper {
11058: my $uri=shift;
11059: $uri=~s|^https?\://([^/]+)||;
11060: $uri=~s|^/||;
11061: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11062: my $token=$1;
11063: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11064: if ($udom && $uname && $file) {
11065: $file=~s|(\?\.*)*$||;
11066: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11067: my $homeserver = &homeserver($uname,$udom);
11068: my $protocol = $protocol{$homeserver};
11069: $protocol = 'http' if ($protocol ne 'https');
11070: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11071: (($uri=~/\?/)?'&':'?').'token='.$token.
11072: '&tokenissued='.$perlvar{'lonHostID'};
11073: } else {
11074: return '/adm/notfound.html';
11075: }
11076: }
11077:
11078: # call with reqtype HEAD: get last modification time
11079: # call with reqtype GET: get the file contents
11080: # Do not call this with reqtype GET for large files! It loads everything into memory
11081: #
11082: sub getuploaded {
11083: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11084: $uri=~s/^\///;
11085: my $homeserver = &homeserver($cnum,$cdom);
11086: my $protocol = $protocol{$homeserver};
11087: $protocol = 'http' if ($protocol ne 'https');
11088: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11089: my $ua=new LWP::UserAgent;
11090: my $request=new HTTP::Request($reqtype,$uri);
11091: my $response=$ua->request($request);
11092: $$rtncode = $response->code;
11093: if (! $response->is_success()) {
11094: return 'failed';
11095: }
11096: if ($reqtype eq 'HEAD') {
11097: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11098: } elsif ($reqtype eq 'GET') {
11099: $$info = $response->content;
11100: }
11101: return 'ok';
11102: }
11103:
11104: sub readfile {
11105: my $file = shift;
11106: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11107: my $fh;
11108: open($fh,"<$file");
11109: my $a='';
11110: while (my $line = <$fh>) { $a .= $line; }
11111: return $a;
11112: }
11113:
11114: sub filelocation {
11115: my ($dir,$file) = @_;
11116: my $location;
11117: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11118:
11119: if ($file =~ m-^/adm/-) {
11120: $file=~s-^/adm/wrapper/-/-;
11121: $file=~s-^/adm/coursedocs/showdoc/-/-;
11122: }
11123:
11124: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11125: $location = $file;
11126: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11127: my ($udom,$uname,$filename)=
11128: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11129: my $home=&homeserver($uname,$udom);
11130: my $is_me=0;
11131: my @ids=¤t_machine_ids();
11132: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11133: if ($is_me) {
11134: $location=propath($udom,$uname).'/userfiles/'.$filename;
11135: } else {
11136: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11137: $udom.'/'.$uname.'/'.$filename;
11138: }
11139: } elsif ($file =~ m-^/adm/-) {
11140: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11141: } else {
11142: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11143: $file=~s:^/(res|priv)/:/:;
11144: my $space=$1;
11145: if ( !( $file =~ m:^/:) ) {
11146: $location = $dir. '/'.$file;
11147: } else {
11148: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11149: }
11150: }
11151: $location=~s://+:/:g; # remove duplicate /
11152: while ($location=~m{/\.\./}) {
11153: if ($location =~ m{/[^/]+/\.\./}) {
11154: $location=~ s{/[^/]+/\.\./}{/}g;
11155: } else {
11156: $location=~ s{/\.\./}{/}g;
11157: }
11158: } #remove dir/..
11159: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11160: return $location;
11161: }
11162:
11163: sub hreflocation {
11164: my ($dir,$file)=@_;
11165: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11166: $file=filelocation($dir,$file);
11167: } elsif ($file=~m-^/adm/-) {
11168: $file=~s-^/adm/wrapper/-/-;
11169: $file=~s-^/adm/coursedocs/showdoc/-/-;
11170: }
11171: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11172: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11173: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11174: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11175: {/uploaded/$1/$2/}x;
11176: }
11177: if ($file=~ m{^/userfiles/}) {
11178: $file =~ s{^/userfiles/}{/uploaded/};
11179: }
11180: return $file;
11181: }
11182:
11183:
11184:
11185:
11186:
11187: sub current_machine_domains {
11188: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11189: }
11190:
11191: sub machine_domains {
11192: my ($hostname) = @_;
11193: my @domains;
11194: my %hostname = &all_hostnames();
11195: while( my($id, $name) = each(%hostname)) {
11196: # &logthis("-$id-$name-$hostname-");
11197: if ($hostname eq $name) {
11198: push(@domains,&host_domain($id));
11199: }
11200: }
11201: return @domains;
11202: }
11203:
11204: sub current_machine_ids {
11205: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11206: }
11207:
11208: sub machine_ids {
11209: my ($hostname) = @_;
11210: $hostname ||= &hostname($perlvar{'lonHostID'});
11211: my @ids;
11212: my %name_to_host = &all_names();
11213: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11214: return @{ $name_to_host{$hostname} };
11215: }
11216: return;
11217: }
11218:
11219: sub additional_machine_domains {
11220: my @domains;
11221: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11222: while( my $line = <$fh>) {
11223: $line =~ s/\s//g;
11224: push(@domains,$line);
11225: }
11226: return @domains;
11227: }
11228:
11229: sub default_login_domain {
11230: my $domain = $perlvar{'lonDefDomain'};
11231: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11232: foreach my $posdom (¤t_machine_domains(),
11233: &additional_machine_domains()) {
11234: if (lc($posdom) eq lc($testdomain)) {
11235: $domain=$posdom;
11236: last;
11237: }
11238: }
11239: return $domain;
11240: }
11241:
11242: # ------------------------------------------------------------- Declutters URLs
11243:
11244: sub declutter {
11245: my $thisfn=shift;
11246: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11247: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11248: $thisfn=~s/^\///;
11249: $thisfn=~s|^adm/wrapper/||;
11250: $thisfn=~s|^adm/coursedocs/showdoc/||;
11251: $thisfn=~s/^res\///;
11252: $thisfn=~s/^priv\///;
11253: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11254: $thisfn=~s/\?.+$//;
11255: }
11256: return $thisfn;
11257: }
11258:
11259: # ------------------------------------------------------------- Clutter up URLs
11260:
11261: sub clutter {
11262: my $thisfn='/'.&declutter(shift);
11263: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11264: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11265: $thisfn='/res'.$thisfn;
11266: }
11267: if ($thisfn !~m|^/adm|) {
11268: if ($thisfn =~ m|^/ext/|) {
11269: $thisfn='/adm/wrapper'.$thisfn;
11270: } else {
11271: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11272: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11273: if ($embstyle eq 'ssi'
11274: || ($embstyle eq 'hdn')
11275: || ($embstyle eq 'rat')
11276: || ($embstyle eq 'prv')
11277: || ($embstyle eq 'ign')) {
11278: #do nothing with these
11279: } elsif (($embstyle eq 'img')
11280: || ($embstyle eq 'emb')
11281: || ($embstyle eq 'wrp')) {
11282: $thisfn='/adm/wrapper'.$thisfn;
11283: } elsif ($embstyle eq 'unk'
11284: && $thisfn!~/\.(sequence|page)$/) {
11285: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11286: } else {
11287: # &logthis("Got a blank emb style");
11288: }
11289: }
11290: }
11291: return $thisfn;
11292: }
11293:
11294: sub clutter_with_no_wrapper {
11295: my $uri = &clutter(shift);
11296: if ($uri =~ m-^/adm/-) {
11297: $uri =~ s-^/adm/wrapper/-/-;
11298: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11299: }
11300: return $uri;
11301: }
11302:
11303: sub freeze_escape {
11304: my ($value)=@_;
11305: if (ref($value)) {
11306: $value=&nfreeze($value);
11307: return '__FROZEN__'.&escape($value);
11308: }
11309: return &escape($value);
11310: }
11311:
11312:
11313: sub thaw_unescape {
11314: my ($value)=@_;
11315: if ($value =~ /^__FROZEN__/) {
11316: substr($value,0,10,undef);
11317: $value=&unescape($value);
11318: return &thaw($value);
11319: }
11320: return &unescape($value);
11321: }
11322:
11323: sub correct_line_ends {
11324: my ($result)=@_;
11325: $$result =~s/\r\n/\n/mg;
11326: $$result =~s/\r/\n/mg;
11327: }
11328: # ================================================================ Main Program
11329:
11330: sub goodbye {
11331: &logthis("Starting Shut down");
11332: #not converted to using infrastruture and probably shouldn't be
11333: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11334: #converted
11335: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11336: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11337: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11338: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11339: #1.1 only
11340: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11341: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11342: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11343: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11344: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11345: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11346: &logthis(sprintf("%-20s is %s",'hits',$hits));
11347: &flushcourselogs();
11348: &logthis("Shutting down");
11349: }
11350:
11351: sub get_dns {
11352: my ($url,$func,$ignore_cache) = @_;
11353: if (!$ignore_cache) {
11354: my ($content,$cached)=
11355: &Apache::lonnet::is_cached_new('dns',$url);
11356: if ($cached) {
11357: &$func($content);
11358: return;
11359: }
11360: }
11361:
11362: my %alldns;
11363: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11364: foreach my $dns (<$config>) {
11365: next if ($dns !~ /^\^(\S*)/x);
11366: my $line = $1;
11367: my ($host,$protocol) = split(/:/,$line);
11368: if ($protocol ne 'https') {
11369: $protocol = 'http';
11370: }
11371: $alldns{$host} = $protocol;
11372: }
11373: while (%alldns) {
11374: my ($dns) = keys(%alldns);
11375: my $ua=new LWP::UserAgent;
11376: $ua->timeout(30);
11377: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11378: my $response=$ua->request($request);
11379: delete($alldns{$dns});
11380: next if ($response->is_error());
11381: my @content = split("\n",$response->content);
11382: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
11383: &$func(\@content);
11384: return;
11385: }
11386: close($config);
11387: my $which = (split('/',$url))[3];
11388: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11389: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11390: my @content = <$config>;
11391: &$func(\@content);
11392: return;
11393: }
11394: # ------------------------------------------------------------ Read domain file
11395: {
11396: my $loaded;
11397: my %domain;
11398:
11399: sub parse_domain_tab {
11400: my ($lines) = @_;
11401: foreach my $line (@$lines) {
11402: next if ($line =~ /^(\#|\s*$ )/x);
11403:
11404: chomp($line);
11405: my ($name,@elements) = split(/:/,$line,9);
11406: my %this_domain;
11407: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11408: 'lang_def', 'city', 'longi', 'lati',
11409: 'primary') {
11410: $this_domain{$field} = shift(@elements);
11411: }
11412: $domain{$name} = \%this_domain;
11413: }
11414: }
11415:
11416: sub reset_domain_info {
11417: undef($loaded);
11418: undef(%domain);
11419: }
11420:
11421: sub load_domain_tab {
11422: my ($ignore_cache) = @_;
11423: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11424: my $fh;
11425: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11426: my @lines = <$fh>;
11427: &parse_domain_tab(\@lines);
11428: }
11429: close($fh);
11430: $loaded = 1;
11431: }
11432:
11433: sub domain {
11434: &load_domain_tab() if (!$loaded);
11435:
11436: my ($name,$what) = @_;
11437: return if ( !exists($domain{$name}) );
11438:
11439: if (!$what) {
11440: return $domain{$name}{'description'};
11441: }
11442: return $domain{$name}{$what};
11443: }
11444:
11445: sub domain_info {
11446: &load_domain_tab() if (!$loaded);
11447: return %domain;
11448: }
11449:
11450: }
11451:
11452:
11453: # ------------------------------------------------------------- Read hosts file
11454: {
11455: my %hostname;
11456: my %hostdom;
11457: my %libserv;
11458: my $loaded;
11459: my %name_to_host;
11460: my %internetdom;
11461: my %LC_dns_serv;
11462:
11463: sub parse_hosts_tab {
11464: my ($file) = @_;
11465: foreach my $configline (@$file) {
11466: next if ($configline =~ /^(\#|\s*$ )/x);
11467: chomp($configline);
11468: if ($configline =~ /^\^/) {
11469: if ($configline =~ /^\^([\w.\-]+)/) {
11470: $LC_dns_serv{$1} = 1;
11471: }
11472: next;
11473: }
11474: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11475: $name=~s/\s//g;
11476: if ($id && $domain && $role && $name) {
11477: $hostname{$id}=$name;
11478: push(@{$name_to_host{$name}}, $id);
11479: $hostdom{$id}=$domain;
11480: if ($role eq 'library') { $libserv{$id}=$name; }
11481: if (defined($protocol)) {
11482: if ($protocol eq 'https') {
11483: $protocol{$id} = $protocol;
11484: } else {
11485: $protocol{$id} = 'http';
11486: }
11487: } else {
11488: $protocol{$id} = 'http';
11489: }
11490: if (defined($intdom)) {
11491: $internetdom{$id} = $intdom;
11492: }
11493: }
11494: }
11495: }
11496:
11497: sub reset_hosts_info {
11498: &purge_remembered();
11499: &reset_domain_info();
11500: &reset_hosts_ip_info();
11501: undef(%name_to_host);
11502: undef(%hostname);
11503: undef(%hostdom);
11504: undef(%libserv);
11505: undef($loaded);
11506: }
11507:
11508: sub load_hosts_tab {
11509: my ($ignore_cache) = @_;
11510: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11511: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11512: my @config = <$config>;
11513: &parse_hosts_tab(\@config);
11514: close($config);
11515: $loaded=1;
11516: }
11517:
11518: sub hostname {
11519: &load_hosts_tab() if (!$loaded);
11520:
11521: my ($lonid) = @_;
11522: return $hostname{$lonid};
11523: }
11524:
11525: sub all_hostnames {
11526: &load_hosts_tab() if (!$loaded);
11527:
11528: return %hostname;
11529: }
11530:
11531: sub all_names {
11532: &load_hosts_tab() if (!$loaded);
11533:
11534: return %name_to_host;
11535: }
11536:
11537: sub all_host_domain {
11538: &load_hosts_tab() if (!$loaded);
11539: return %hostdom;
11540: }
11541:
11542: sub is_library {
11543: &load_hosts_tab() if (!$loaded);
11544:
11545: return exists($libserv{$_[0]});
11546: }
11547:
11548: sub all_library {
11549: &load_hosts_tab() if (!$loaded);
11550:
11551: return %libserv;
11552: }
11553:
11554: sub unique_library {
11555: #2x reverse removes all hostnames that appear more than once
11556: my %unique = reverse &all_library();
11557: return reverse %unique;
11558: }
11559:
11560: sub get_servers {
11561: &load_hosts_tab() if (!$loaded);
11562:
11563: my ($domain,$type) = @_;
11564: my %possible_hosts = ($type eq 'library') ? %libserv
11565: : %hostname;
11566: my %result;
11567: if (ref($domain) eq 'ARRAY') {
11568: while ( my ($host,$hostname) = each(%possible_hosts)) {
11569: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11570: $result{$host} = $hostname;
11571: }
11572: }
11573: } else {
11574: while ( my ($host,$hostname) = each(%possible_hosts)) {
11575: if ($hostdom{$host} eq $domain) {
11576: $result{$host} = $hostname;
11577: }
11578: }
11579: }
11580: return %result;
11581: }
11582:
11583: sub get_unique_servers {
11584: my %unique = reverse &get_servers(@_);
11585: return reverse %unique;
11586: }
11587:
11588: sub host_domain {
11589: &load_hosts_tab() if (!$loaded);
11590:
11591: my ($lonid) = @_;
11592: return $hostdom{$lonid};
11593: }
11594:
11595: sub all_domains {
11596: &load_hosts_tab() if (!$loaded);
11597:
11598: my %seen;
11599: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11600: return @uniq;
11601: }
11602:
11603: sub internet_dom {
11604: &load_hosts_tab() if (!$loaded);
11605:
11606: my ($lonid) = @_;
11607: return $internetdom{$lonid};
11608: }
11609:
11610: sub is_LC_dns {
11611: &load_hosts_tab() if (!$loaded);
11612:
11613: my ($hostname) = @_;
11614: return exists($LC_dns_serv{$hostname});
11615: }
11616:
11617: }
11618:
11619: {
11620: my %iphost;
11621: my %name_to_ip;
11622: my %lonid_to_ip;
11623:
11624: sub get_hosts_from_ip {
11625: my ($ip) = @_;
11626: my %iphosts = &get_iphost();
11627: if (ref($iphosts{$ip})) {
11628: return @{$iphosts{$ip}};
11629: }
11630: return;
11631: }
11632:
11633: sub reset_hosts_ip_info {
11634: undef(%iphost);
11635: undef(%name_to_ip);
11636: undef(%lonid_to_ip);
11637: }
11638:
11639: sub get_host_ip {
11640: my ($lonid) = @_;
11641: if (exists($lonid_to_ip{$lonid})) {
11642: return $lonid_to_ip{$lonid};
11643: }
11644: my $name=&hostname($lonid);
11645: my $ip = gethostbyname($name);
11646: return if (!$ip || length($ip) ne 4);
11647: $ip=inet_ntoa($ip);
11648: $name_to_ip{$name} = $ip;
11649: $lonid_to_ip{$lonid} = $ip;
11650: return $ip;
11651: }
11652:
11653: sub get_iphost {
11654: my ($ignore_cache) = @_;
11655:
11656: if (!$ignore_cache) {
11657: if (%iphost) {
11658: return %iphost;
11659: }
11660: my ($ip_info,$cached)=
11661: &Apache::lonnet::is_cached_new('iphost','iphost');
11662: if ($cached) {
11663: %iphost = %{$ip_info->[0]};
11664: %name_to_ip = %{$ip_info->[1]};
11665: %lonid_to_ip = %{$ip_info->[2]};
11666: return %iphost;
11667: }
11668: }
11669:
11670: # get yesterday's info for fallback
11671: my %old_name_to_ip;
11672: my ($ip_info,$cached)=
11673: &Apache::lonnet::is_cached_new('iphost','iphost');
11674: if ($cached) {
11675: %old_name_to_ip = %{$ip_info->[1]};
11676: }
11677:
11678: my %name_to_host = &all_names();
11679: foreach my $name (keys(%name_to_host)) {
11680: my $ip;
11681: if (!exists($name_to_ip{$name})) {
11682: $ip = gethostbyname($name);
11683: if (!$ip || length($ip) ne 4) {
11684: if (defined($old_name_to_ip{$name})) {
11685: $ip = $old_name_to_ip{$name};
11686: &logthis("Can't find $name defaulting to old $ip");
11687: } else {
11688: &logthis("Name $name no IP found");
11689: next;
11690: }
11691: } else {
11692: $ip=inet_ntoa($ip);
11693: }
11694: $name_to_ip{$name} = $ip;
11695: } else {
11696: $ip = $name_to_ip{$name};
11697: }
11698: foreach my $id (@{ $name_to_host{$name} }) {
11699: $lonid_to_ip{$id} = $ip;
11700: }
11701: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11702: }
11703: &Apache::lonnet::do_cache_new('iphost','iphost',
11704: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11705: 48*60*60);
11706:
11707: return %iphost;
11708: }
11709:
11710: #
11711: # Given a DNS returns the loncapa host name for that DNS
11712: #
11713: sub host_from_dns {
11714: my ($dns) = @_;
11715: my @hosts;
11716: my $ip;
11717:
11718: if (exists($name_to_ip{$dns})) {
11719: $ip = $name_to_ip{$dns};
11720: }
11721: if (!$ip) {
11722: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11723: if (length($ip) == 4) {
11724: $ip = &IO::Socket::inet_ntoa($ip);
11725: }
11726: }
11727: if ($ip) {
11728: @hosts = get_hosts_from_ip($ip);
11729: return $hosts[0];
11730: }
11731: return undef;
11732: }
11733:
11734: sub get_internet_names {
11735: my ($lonid) = @_;
11736: return if ($lonid eq '');
11737: my ($idnref,$cached)=
11738: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11739: if ($cached) {
11740: return $idnref;
11741: }
11742: my $ip = &get_host_ip($lonid);
11743: my @hosts = &get_hosts_from_ip($ip);
11744: my %iphost = &get_iphost();
11745: my (@idns,%seen);
11746: foreach my $id (@hosts) {
11747: my $dom = &host_domain($id);
11748: my $prim_id = &domain($dom,'primary');
11749: my $prim_ip = &get_host_ip($prim_id);
11750: next if ($seen{$prim_ip});
11751: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11752: foreach my $id (@{$iphost{$prim_ip}}) {
11753: my $intdom = &internet_dom($id);
11754: unless (grep(/^\Q$intdom\E$/,@idns)) {
11755: push(@idns,$intdom);
11756: }
11757: }
11758: }
11759: $seen{$prim_ip} = 1;
11760: }
11761: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11762: }
11763:
11764: }
11765:
11766: sub all_loncaparevs {
11767: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11768: }
11769:
11770: BEGIN {
11771:
11772: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11773: unless ($readit) {
11774: {
11775: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11776: %perlvar = (%perlvar,%{$configvars});
11777: }
11778:
11779:
11780: # ------------------------------------------------------ Read spare server file
11781: {
11782: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11783:
11784: while (my $configline=<$config>) {
11785: chomp($configline);
11786: if ($configline) {
11787: my ($host,$type) = split(':',$configline,2);
11788: if (!defined($type) || $type eq '') { $type = 'default' };
11789: push(@{ $spareid{$type} }, $host);
11790: }
11791: }
11792: close($config);
11793: }
11794: # ------------------------------------------------------------ Read permissions
11795: {
11796: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11797:
11798: while (my $configline=<$config>) {
11799: chomp($configline);
11800: if ($configline) {
11801: my ($role,$perm)=split(/ /,$configline);
11802: if ($perm ne '') { $pr{$role}=$perm; }
11803: }
11804: }
11805: close($config);
11806: }
11807:
11808: # -------------------------------------------- Read plain texts for permissions
11809: {
11810: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11811:
11812: while (my $configline=<$config>) {
11813: chomp($configline);
11814: if ($configline) {
11815: my ($short,@plain)=split(/:/,$configline);
11816: %{$prp{$short}} = ();
11817: if (@plain > 0) {
11818: $prp{$short}{'std'} = $plain[0];
11819: for (my $i=1; $i<@plain; $i++) {
11820: $prp{$short}{'alt'.$i} = $plain[$i];
11821: }
11822: }
11823: }
11824: }
11825: close($config);
11826: }
11827:
11828: # ---------------------------------------------------------- Read package table
11829: {
11830: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11831:
11832: while (my $configline=<$config>) {
11833: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11834: chomp($configline);
11835: my ($short,$plain)=split(/:/,$configline);
11836: my ($pack,$name)=split(/\&/,$short);
11837: if ($plain ne '') {
11838: $packagetab{$pack.'&'.$name.'&name'}=$name;
11839: $packagetab{$short}=$plain;
11840: }
11841: }
11842: close($config);
11843: }
11844:
11845: # ---------------------------------------------------------- Read loncaparev table
11846: {
11847: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11848: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11849: while (my $configline=<$config>) {
11850: chomp($configline);
11851: my ($hostid,$loncaparev)=split(/:/,$configline);
11852: $loncaparevs{$hostid}=$loncaparev;
11853: }
11854: close($config);
11855: }
11856: }
11857: }
11858:
11859: # ---------------------------------------------------------- Read serverhostID table
11860: {
11861: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11862: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11863: while (my $configline=<$config>) {
11864: chomp($configline);
11865: my ($name,$id)=split(/:/,$configline);
11866: $serverhomeIDs{$name}=$id;
11867: }
11868: close($config);
11869: }
11870: }
11871: }
11872:
11873: {
11874: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11875: if (-e $file) {
11876: my $parser = HTML::LCParser->new($file);
11877: while (my $token = $parser->get_token()) {
11878: if ($token->[0] eq 'S') {
11879: my $item = $token->[1];
11880: my $name = $token->[2]{'name'};
11881: my $value = $token->[2]{'value'};
11882: if ($item ne '' && $name ne '' && $value ne '') {
11883: my $release = $parser->get_text();
11884: $release =~ s/(^\s*|\s*$ )//gx;
11885: $needsrelease{$item.':'.$name.':'.$value} = $release;
11886: }
11887: }
11888: }
11889: }
11890: }
11891:
11892: # ---------------------------------------------------------- Read managers table
11893: {
11894: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11895: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11896: while (my $configline=<$config>) {
11897: chomp($configline);
11898: next if ($configline =~ /^\#/);
11899: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11900: $managerstab{$configline} = 1;
11901: }
11902: }
11903: close($config);
11904: }
11905: }
11906: }
11907:
11908: # ------------- set up temporary directory
11909: {
11910: $tmpdir = LONCAPA::tempdir();
11911:
11912: }
11913:
11914: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11915: 'compress_threshold'=> 20_000,
11916: });
11917:
11918: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11919: $dumpcount=0;
11920: $locknum=0;
11921:
11922: &logtouch();
11923: &logthis('<font color="yellow">INFO: Read configuration</font>');
11924: $readit=1;
11925: {
11926: use integer;
11927: my $test=(2**32)+1;
11928: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11929: &logthis(" Detected 64bit platform ($_64bit)");
11930: }
11931: }
11932: }
11933:
11934: 1;
11935: __END__
11936:
11937: =pod
11938:
11939: =head1 NAME
11940:
11941: Apache::lonnet - Subroutines to ask questions about things in the network.
11942:
11943: =head1 SYNOPSIS
11944:
11945: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11946:
11947: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11948:
11949: Common parameters:
11950:
11951: =over 4
11952:
11953: =item *
11954:
11955: $uname : an internal username (if $cname expecting a course Id specifically)
11956:
11957: =item *
11958:
11959: $udom : a domain (if $cdom expecting a course's domain specifically)
11960:
11961: =item *
11962:
11963: $symb : a resource instance identifier
11964:
11965: =item *
11966:
11967: $namespace : the name of a .db file that contains the data needed or
11968: being set.
11969:
11970: =back
11971:
11972: =head1 OVERVIEW
11973:
11974: lonnet provides subroutines which interact with the
11975: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11976: about classes, users, and resources.
11977:
11978: For many of these objects you can also use this to store data about
11979: them or modify them in various ways.
11980:
11981: =head2 Symbs
11982:
11983: To identify a specific instance of a resource, LON-CAPA uses symbols
11984: or "symbs"X<symb>. These identifiers are built from the URL of the
11985: map, the resource number of the resource in the map, and the URL of
11986: the resource itself. The latter is somewhat redundant, but might help
11987: if maps change.
11988:
11989: An example is
11990:
11991: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11992:
11993: The respective map entry is
11994:
11995: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11996: title="Problem 2">
11997: </resource>
11998:
11999: Symbs are used by the random number generator, as well as to store and
12000: restore data specific to a certain instance of for example a problem.
12001:
12002: =head2 Storing And Retrieving Data
12003:
12004: X<store()>X<cstore()>X<restore()>Three of the most important functions
12005: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12006: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12007: is is the non-critical message twin of cstore. These functions are for
12008: handlers to store a perl hash to a user's permanent data space in an
12009: easy manner, and to retrieve it again on another call. It is expected
12010: that a handler would use this once at the beginning to retrieve data,
12011: and then again once at the end to send only the new data back.
12012:
12013: The data is stored in the user's data directory on the user's
12014: homeserver under the ID of the course.
12015:
12016: The hash that is returned by restore will have all of the previous
12017: value for all of the elements of the hash.
12018:
12019: Example:
12020:
12021: #creating a hash
12022: my %hash;
12023: $hash{'foo'}='bar';
12024:
12025: #storing it
12026: &Apache::lonnet::cstore(\%hash);
12027:
12028: #changing a value
12029: $hash{'foo'}='notbar';
12030:
12031: #adding a new value
12032: $hash{'bar'}='foo';
12033: &Apache::lonnet::cstore(\%hash);
12034:
12035: #retrieving the hash
12036: my %history=&Apache::lonnet::restore();
12037:
12038: #print the hash
12039: foreach my $key (sort(keys(%history))) {
12040: print("\%history{$key} = $history{$key}");
12041: }
12042:
12043: Will print out:
12044:
12045: %history{1:foo} = bar
12046: %history{1:keys} = foo:timestamp
12047: %history{1:timestamp} = 990455579
12048: %history{2:bar} = foo
12049: %history{2:foo} = notbar
12050: %history{2:keys} = foo:bar:timestamp
12051: %history{2:timestamp} = 990455580
12052: %history{bar} = foo
12053: %history{foo} = notbar
12054: %history{timestamp} = 990455580
12055: %history{version} = 2
12056:
12057: Note that the special hash entries C<keys>, C<version> and
12058: C<timestamp> were added to the hash. C<version> will be equal to the
12059: total number of versions of the data that have been stored. The
12060: C<timestamp> attribute will be the UNIX time the hash was
12061: stored. C<keys> is available in every historical section to list which
12062: keys were added or changed at a specific historical revision of a
12063: hash.
12064:
12065: B<Warning>: do not store the hash that restore returns directly. This
12066: will cause a mess since it will restore the historical keys as if the
12067: were new keys. I.E. 1:foo will become 1:1:foo etc.
12068:
12069: Calling convention:
12070:
12071: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
12072: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
12073:
12074: For more detailed information, see lonnet specific documentation.
12075:
12076: =head1 RETURN MESSAGES
12077:
12078: =over 4
12079:
12080: =item * B<con_lost>: unable to contact remote host
12081:
12082: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12083: when the connection is brought back up
12084:
12085: =item * B<con_failed>: unable to contact remote host and unable to save message
12086: for later delivery
12087:
12088: =item * B<error:>: an error a occurred, a description of the error follows the :
12089:
12090: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12091: that was requested
12092:
12093: =back
12094:
12095: =head1 PUBLIC SUBROUTINES
12096:
12097: =head2 Session Environment Functions
12098:
12099: =over 4
12100:
12101: =item *
12102: X<appenv()>
12103: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12104: the user envirnoment file, and will be restored for each access this
12105: user makes during this session, also modifies the %env for the current
12106: process. Optional rolesarrayref - if defined contains a reference to an array
12107: of roles which are exempt from the restriction on modifying user.role entries
12108: in the user's environment.db and in %env.
12109:
12110: =item *
12111: X<delenv()>
12112: B<delenv($delthis,$regexp)>: removes all items from the session
12113: environment file that begin with $delthis. If the
12114: optional second arg - $regexp - is true, $delthis is treated as a
12115: regular expression, otherwise \Q$delthis\E is used.
12116: The values are also deleted from the current processes %env.
12117:
12118: =item * get_env_multiple($name)
12119:
12120: gets $name from the %env hash, it seemlessly handles the cases where multiple
12121: values may be defined and end up as an array ref.
12122:
12123: returns an array of values
12124:
12125: =back
12126:
12127: =head2 User Information
12128:
12129: =over 4
12130:
12131: =item *
12132: X<queryauthenticate()>
12133: B<queryauthenticate($uname,$udom)>: try to determine user's current
12134: authentication scheme
12135:
12136: =item *
12137: X<authenticate()>
12138: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12139: authenticate user from domain's lib servers (first use the current
12140: one). C<$upass> should be the users password.
12141: $checkdefauth is optional (value is 1 if a check should be made to
12142: authenticate user using default authentication method, and allow
12143: account creation if username does not have account in the domain).
12144: $clientcancheckhost is optional (value is 1 if checking whether the
12145: server can host will occur on the client side in lonauth.pm).
12146:
12147: =item *
12148: X<homeserver()>
12149: B<homeserver($uname,$udom)>: find the server which has
12150: the user's directory and files (there must be only one), this caches
12151: the answer, and also caches if there is a borken connection.
12152:
12153: =item *
12154: X<idget()>
12155: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12156: (IDs are a unique resource in a domain, there must be only 1 ID per
12157: username, and only 1 username per ID in a specific domain) (returns
12158: hash: id=>name,id=>name)
12159:
12160: =item *
12161: X<idrget()>
12162: B<idrget($udom,@unames)>: find the IDs behind a list of
12163: usernames (returns hash: name=>id,name=>id)
12164:
12165: =item *
12166: X<idput()>
12167: B<idput($udom,%ids)>: store away a list of names and associated IDs
12168:
12169: =item *
12170: X<rolesinit()>
12171: B<rolesinit($udom,$username)>: get user privileges.
12172: returns user role, first access and timer interval hashes
12173:
12174: =item *
12175: X<privileged()>
12176: B<privileged($username,$domain)>: returns a true if user has a
12177: privileged and active role (i.e. su or dc), false otherwise.
12178:
12179: =item *
12180: X<getsection()>
12181: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12182: course $cname, return section name/number or '' for "not in course"
12183: and '-1' for "no section"
12184:
12185: =item *
12186: X<userenvironment()>
12187: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12188: passed in @what from the requested user's environment, returns a hash
12189:
12190: =item *
12191: X<userlog_query()>
12192: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12193: activity.log file. %filters defines filters applied when parsing the
12194: log file. These can be start or end timestamps, or the type of action
12195: - log to look for Login or Logout events, check for Checkin or
12196: Checkout, role for role selection. The response is in the form
12197: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12198: escaped strings of the action recorded in the activity.log file.
12199:
12200: =back
12201:
12202: =head2 User Roles
12203:
12204: =over 4
12205:
12206: =item *
12207:
12208: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12209: F: full access
12210: U,I,K: authentication modes (cxx only)
12211: '': forbidden
12212: 1: user needs to choose course
12213: 2: browse allowed
12214: A: passphrase authentication needed
12215:
12216: =item *
12217:
12218: constructaccess($url,$setpriv) : check for access to construction space URL
12219:
12220: See if the owner domain and name in the URL match those in the
12221: expected environment. If so, return three element list
12222: ($ownername,$ownerdomain,$ownerhome).
12223:
12224: Otherwise return the null string.
12225:
12226: If second argument 'setpriv' is true, it assigns the privileges,
12227: and returns the same three element list, unless the owner has
12228: blocked "ad hoc" Domain Coordinator access to the Author Space,
12229: in which case the null string is returned.
12230:
12231: =item *
12232:
12233: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12234: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12235: and course level
12236:
12237: =item *
12238:
12239: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12240: (rolesplain.tab); plain text explanation of a user role term.
12241: $type is Course (default) or Community.
12242: If $forcedefault evaluates to true, text returned will be default
12243: text for $type. Otherwise, if this is a course, the text returned
12244: will be a custom name for the role (if defined in the course's
12245: environment). If no custom name is defined the default is returned.
12246:
12247: =item *
12248:
12249: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
12250: All arguments are optional. Returns a hash of a roles, either for
12251: co-author/assistant author roles for a user's Construction Space
12252: (default), or if $context is 'userroles', roles for the user himself,
12253: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12254: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12255: For each key, value is set to colon-separated start and end times for
12256: the role. If no username and domain are specified, will default to
12257: current user/domain. Types, roles, and roledoms are references to arrays
12258: of role statuses (active, future or previous), roles
12259: (e.g., cc,in, st etc.) and domains of the roles which can be used
12260: to restrict the list of roles reported. If no array ref is
12261: provided for types, will default to return only active roles.
12262:
12263: =item *
12264:
12265: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12266: user: $uname:$udom has a role in the course: $cdom_$cnum.
12267:
12268: Additional optional arguments are: $type (if role checking is to be restricted
12269: to certain user status types -- previous (expired roles), active (currently
12270: available roles) or future (roles available in the future), and
12271: $hideprivileged -- if true will not report course roles for users who
12272: have active Domain Coordinator or Super User roles.
12273:
12274: =back
12275:
12276: =head2 User Modification
12277:
12278: =over 4
12279:
12280: =item *
12281:
12282: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12283: user for the level given by URL. Optional start and end dates (leave empty
12284: string or zero for "no date")
12285:
12286: =item *
12287:
12288: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12289: change a users, password, possible return values are: ok,
12290: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12291: refused
12292:
12293: =item *
12294:
12295: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12296:
12297: =item *
12298:
12299: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12300: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12301:
12302: will update user information (firstname,middlename,lastname,generation,
12303: permanentemail), and if forceid is true, student/employee ID also.
12304: A user's institutional affiliation(s) can also be updated.
12305: User information fields will not be overwritten with empty entries
12306: unless the field is included in the $candelete array reference.
12307: This array is included when a single user is modified via "Manage Users",
12308: or when Autoupdate.pl is run by cron in a domain.
12309:
12310: =item *
12311:
12312: modifystudent
12313:
12314: modify a student's enrollment and identification information.
12315: The course id is resolved based on the current users environment.
12316: This means the envoking user must be a course coordinator or otherwise
12317: associated with a course.
12318:
12319: This call is essentially a wrapper for lonnet::modifyuser and
12320: lonnet::modify_student_enrollment
12321:
12322: Inputs:
12323:
12324: =over 4
12325:
12326: =item B<$udom> Student's loncapa domain
12327:
12328: =item B<$uname> Student's loncapa login name
12329:
12330: =item B<$uid> Student/Employee ID
12331:
12332: =item B<$umode> Student's authentication mode
12333:
12334: =item B<$upass> Student's password
12335:
12336: =item B<$first> Student's first name
12337:
12338: =item B<$middle> Student's middle name
12339:
12340: =item B<$last> Student's last name
12341:
12342: =item B<$gene> Student's generation
12343:
12344: =item B<$usec> Student's section in course
12345:
12346: =item B<$end> Unix time of the roles expiration
12347:
12348: =item B<$start> Unix time of the roles start date
12349:
12350: =item B<$forceid> If defined, allow $uid to be changed
12351:
12352: =item B<$desiredhome> server to use as home server for student
12353:
12354: =item B<$email> Student's permanent e-mail address
12355:
12356: =item B<$type> Type of enrollment (auto or manual)
12357:
12358: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12359:
12360: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12361:
12362: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12363:
12364: =item B<$context> role change context (shown in User Management Logs display in a course)
12365:
12366: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12367:
12368: =back
12369:
12370: =item *
12371:
12372: modify_student_enrollment
12373:
12374: Change a students enrollment status in a class. The environment variable
12375: 'role.request.course' must be defined for this function to proceed.
12376:
12377: Inputs:
12378:
12379: =over 4
12380:
12381: =item $udom, students domain
12382:
12383: =item $uname, students name
12384:
12385: =item $uid, students user id
12386:
12387: =item $first, students first name
12388:
12389: =item $middle
12390:
12391: =item $last
12392:
12393: =item $gene
12394:
12395: =item $usec
12396:
12397: =item $end
12398:
12399: =item $start
12400:
12401: =item $type
12402:
12403: =item $locktype
12404:
12405: =item $cid
12406:
12407: =item $selfenroll
12408:
12409: =item $context
12410:
12411: =back
12412:
12413:
12414: =item *
12415:
12416: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12417: custom role; give a custom role to a user for the level given by URL. Specify
12418: name and domain of role author, and role name
12419:
12420: =item *
12421:
12422: revokerole($udom,$uname,$url,$role) : revoke a role for url
12423:
12424: =item *
12425:
12426: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12427:
12428: =back
12429:
12430: =head2 Course Infomation
12431:
12432: =over 4
12433:
12434: =item *
12435:
12436: coursedescription($courseid,$options) : returns a hash of information about the
12437: specified course id, including all environment settings for the
12438: course, the description of the course will be in the hash under the
12439: key 'description'
12440:
12441: $options is an optional parameter that if supplied is a hash reference that controls
12442: what how this function works. It has the following key/values:
12443:
12444: =over 4
12445:
12446: =item freshen_cache
12447:
12448: If defined, and the environment cache for the course is valid, it is
12449: returned in the returned hash.
12450:
12451: =item one_time
12452:
12453: If defined, the last cache time is set to _now_
12454:
12455: =item user
12456:
12457: If defined, the supplied username is used instead of the current user.
12458:
12459:
12460: =back
12461:
12462: =item *
12463:
12464: resdata($name,$domain,$type,@which) : request for current parameter
12465: setting for a specific $type, where $type is either 'course' or 'user',
12466: @what should be a list of parameters to ask about. This routine caches
12467: answers for 5 minutes.
12468:
12469: =item *
12470:
12471: get_courseresdata($courseid, $domain) : dump the entire course resource
12472: data base, returning a hash that is keyed by the resource name and has
12473: values that are the resource value. I believe that the timestamps and
12474: versions are also returned.
12475:
12476: =back
12477:
12478: =head2 Course Modification
12479:
12480: =over 4
12481:
12482: =item *
12483:
12484: writecoursepref($courseid,%prefs) : write preferences (environment
12485: database) for a course
12486:
12487: =item *
12488:
12489: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12490:
12491: =item *
12492:
12493: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12494:
12495: =item *
12496:
12497: is_course($courseid), is_course($cdom, $cnum)
12498:
12499: Accepts either a combined $courseid (in the form of domain_courseid) or the
12500: two component version $cdom, $cnum. It checks if the specified course exists.
12501:
12502: Returns:
12503: undef if the course doesn't exist, otherwise
12504: in scalar context the combined courseid.
12505: in list context the two components of the course identifier, domain and
12506: courseid.
12507:
12508: =back
12509:
12510: =head2 Resource Subroutines
12511:
12512: =over 4
12513:
12514: =item *
12515:
12516: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12517:
12518: =item *
12519:
12520: repcopy($filename) : subscribes to the requested file, and attempts to
12521: replicate from the owning library server, Might return
12522: 'unavailable', 'not_found', 'forbidden', 'ok', or
12523: 'bad_request', also attempts to grab the metadata for the
12524: resource. Expects the local filesystem pathname
12525: (/home/httpd/html/res/....)
12526:
12527: =back
12528:
12529: =head2 Resource Information
12530:
12531: =over 4
12532:
12533: =item *
12534:
12535: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12536: a vairety of different possible values, $varname should be a request
12537: string, and the other parameters can be used to specify who and what
12538: one is asking about.
12539:
12540: Possible values for $varname are environment.lastname (or other item
12541: from the envirnment hash), user.name (or someother aspect about the
12542: user), resource.0.maxtries (or some other part and parameter of a
12543: resource)
12544:
12545: =item *
12546:
12547: directcondval($number) : get current value of a condition; reads from a state
12548: string
12549:
12550: =item *
12551:
12552: condval($condidx) : value of condition index based on state
12553:
12554: =item *
12555:
12556: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12557: resource's metadata, $what should be either a specific key, or either
12558: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12559: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12560:
12561: this function automatically caches all requests
12562:
12563: =item *
12564:
12565: metadata_query($query,$custom,$customshow) : make a metadata query against the
12566: network of library servers; returns file handle of where SQL and regex results
12567: will be stored for query
12568:
12569: =item *
12570:
12571: symbread($filename) : return symbolic list entry (filename argument optional);
12572: returns the data handle
12573:
12574: =item *
12575:
12576: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12577: and is a possible symb for the URL in $thisfn, and if is an encrypted
12578: resource that the user accessed using /enc/ returns a 1 on success, 0
12579: on failure, user must be in a course, as it assumes the existence of
12580: the course initial hash, and uses $env('request.course.id'}. The third
12581: arg is an optional reference to a scalar. If this arg is passed in the
12582: call to symbverify, it will be set to 1 if the symb has been set to be
12583: encrypted; otherwise it will be null.
12584:
12585: =item *
12586:
12587: symbclean($symb) : removes versions numbers from a symb, returns the
12588: cleaned symb
12589:
12590: =item *
12591:
12592: is_on_map($uri) : checks if the $uri is somewhere on the current
12593: course map, user must be in a course for it to work.
12594:
12595: =item *
12596:
12597: numval($salt) : return random seed value (addend for rndseed)
12598:
12599: =item *
12600:
12601: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12602: a random seed, all arguments are optional, if they aren't sent it uses the
12603: environment to derive them. Note: if symb isn't sent and it can't get one
12604: from &symbread it will use the current time as its return value
12605:
12606: =item *
12607:
12608: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12609: unfakeable, receipt
12610:
12611: =item *
12612:
12613: receipt() : API to ireceipt working off of env values; given out to users
12614:
12615: =item *
12616:
12617: countacc($url) : count the number of accesses to a given URL
12618:
12619: =item *
12620:
12621: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12622:
12623: =item *
12624:
12625: checkin($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 $tcrsid)
12626:
12627: =item *
12628:
12629: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12630:
12631: =item *
12632:
12633: devalidate($symb) : devalidate temporary spreadsheet calculations,
12634: forcing spreadsheet to reevaluate the resource scores next time.
12635:
12636: =item *
12637:
12638: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
12639: when viewing in course context.
12640:
12641: input: six args -- filename (decluttered), course number, course domain,
12642: url, symb (if registered) and group (if this is a
12643: group item -- e.g., bulletin board, group page etc.).
12644:
12645: output: array of five scalars --
12646: $cfile -- url for file editing if editable on current server
12647: $home -- homeserver of resource (i.e., for author if published,
12648: or course if uploaded.).
12649: $switchserver -- 1 if server switch will be needed.
12650: $forceedit -- 1 if icon/link should be to go to edit mode
12651: $forceview -- 1 if icon/link should be to go to view mode
12652:
12653: =item *
12654:
12655: is_course_upload($file,$cnum,$cdom)
12656:
12657: Used in course context to determine if current file was uploaded to
12658: the course (i.e., would be found in /userfiles/docs on the course's
12659: homeserver.
12660:
12661: input: 3 args -- filename (decluttered), course number and course domain.
12662: output: boolean -- 1 if file was uploaded.
12663:
12664: =back
12665:
12666: =head2 Storing/Retreiving Data
12667:
12668: =over 4
12669:
12670: =item *
12671:
12672: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12673: for this url; hashref needs to be given and should be a \%hashname; the
12674: remaining args aren't required and if they aren't passed or are '' they will
12675: be derived from the env
12676:
12677: =item *
12678:
12679: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12680: uses critical subroutine
12681:
12682: =item *
12683:
12684: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12685: all args are optional
12686:
12687: =item *
12688:
12689: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12690: dumps the complete (or key matching regexp) namespace into a hash
12691: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12692: normally &store()ed into
12693:
12694: $range should be either an integer '100' (give me the first 100
12695: matching records)
12696: or be two integers sperated by a - with no spaces
12697: '30-50' (give me the 30th through the 50th matching
12698: records)
12699:
12700:
12701: =item *
12702:
12703: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12704: replaces a &store() version of data with a replacement set of data
12705: for a particular resource in a namespace passed in the $storehash hash
12706: reference
12707:
12708: =item *
12709:
12710: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12711: works very similar to store/cstore, but all data is stored in a
12712: temporary location and can be reset using tmpreset, $storehash should
12713: be a hash reference, returns nothing on success
12714:
12715: =item *
12716:
12717: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12718: similar to restore, but all data is stored in a temporary location and
12719: can be reset using tmpreset. Returns a hash of values on success,
12720: error string otherwise.
12721:
12722: =item *
12723:
12724: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12725: deltes all keys for $symb form the temporary storage hash.
12726:
12727: =item *
12728:
12729: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12730: reference filled in from namesp ($udom and $uname are optional)
12731:
12732: =item *
12733:
12734: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12735: namesp ($udom and $uname are optional)
12736:
12737: =item *
12738:
12739: dump($namespace,$udom,$uname,$regexp,$range) :
12740: dumps the complete (or key matching regexp) namespace into a hash
12741: ($udom, $uname, $regexp, $range are optional)
12742:
12743: $range should be either an integer '100' (give me the first 100
12744: matching records)
12745: or be two integers sperated by a - with no spaces
12746: '30-50' (give me the 30th through the 50th matching
12747: records)
12748: =item *
12749:
12750: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12751: $store can be a scalar, an array reference, or if the amount to be
12752: incremented is > 1, a hash reference.
12753:
12754: ($udom and $uname are optional)
12755:
12756: =item *
12757:
12758: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12759: ($udom and $uname are optional)
12760:
12761: =item *
12762:
12763: cput($namespace,$storehash,$udom,$uname) : critical put
12764: ($udom and $uname are optional)
12765:
12766: =item *
12767:
12768: newput($namespace,$storehash,$udom,$uname) :
12769:
12770: Attempts to store the items in the $storehash, but only if they don't
12771: currently exist, if this succeeds you can be certain that you have
12772: successfully created a new key value pair in the $namespace db.
12773:
12774:
12775: Args:
12776: $namespace: name of database to store values to
12777: $storehash: hashref to store to the db
12778: $udom: (optional) domain of user containing the db
12779: $uname: (optional) name of user caontaining the db
12780:
12781: Returns:
12782: 'ok' -> succeeded in storing all keys of $storehash
12783: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12784: least <key> already existed in the db (other
12785: requested keys may also already exist)
12786: 'error: <msg>' -> unable to tie the DB or other error occurred
12787: 'con_lost' -> unable to contact request server
12788: 'refused' -> action was not allowed by remote machine
12789:
12790:
12791: =item *
12792:
12793: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12794: reference filled in from namesp (encrypts the return communication)
12795: ($udom and $uname are optional)
12796:
12797: =item *
12798:
12799: log($udom,$name,$home,$message) : write to permanent log for user; use
12800: critical subroutine
12801:
12802: =item *
12803:
12804: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12805: array reference filled in from namespace found in domain level on either
12806: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12807:
12808: =item *
12809:
12810: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12811: domain level either on specified domain server ($uhome) or primary domain
12812: server ($udom and $uhome are optional)
12813:
12814: =item *
12815:
12816: get_domain_defaults($target_domain) : returns hash with defaults for
12817: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12818: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12819: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12820: Values are retrieved from cache (if current), or from domain's configuration.db
12821: (if available), or lastly from values in lonTabs/dns_domain,tab,
12822: or lonTabs/domain.tab.
12823:
12824: %domdefaults = &get_auth_defaults($target_domain);
12825:
12826: =back
12827:
12828: =head2 Network Status Functions
12829:
12830: =over 4
12831:
12832: =item *
12833:
12834: dirlist() : return directory list based on URI (first arg).
12835:
12836: Inputs: 1 required, 5 optional.
12837:
12838: =over
12839:
12840: =item
12841: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12842:
12843: =item
12844: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12845:
12846: =item
12847: $username - username of user/course to be listed. Extracted from $uri if absent.
12848:
12849: =item
12850: $getpropath - boolean: 1 if prepend path using &propath().
12851:
12852: =item
12853: $getuserdir - boolean: 1 if prepend path for "userfiles".
12854:
12855: =item
12856: $alternateRoot - path to prepend in place of path from $uri.
12857:
12858: =back
12859:
12860: Returns: Array of up to two items.
12861:
12862: =over
12863:
12864: a reference to an array of files/subdirectories
12865:
12866: =over
12867:
12868: Each element in the array of files/subdirectories is a & separated list of
12869: item name and the result of running stat on the item. If dirlist was requested
12870: for a file instead of a directory, the item name will be ''. For a directory
12871: listing, if the item is a metadata file, the element will end &N&M
12872: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12873: default copyright set (1).
12874:
12875: =back
12876:
12877: a scalar containing error condition (if encountered).
12878:
12879: =over
12880:
12881: =item
12882: no_host (no homeserver identified for $username:$domain).
12883:
12884: =item
12885: no_such_host (server contacted for listing not identified as valid host).
12886:
12887: =item
12888: con_lost (connection to remote server failed).
12889:
12890: =item
12891: refused (invalid $username:$domain received on lond side).
12892:
12893: =item
12894: no_such_dir (directory at specified path on lond side does not exist).
12895:
12896: =item
12897: empty (directory at specified path on lond side is empty).
12898:
12899: =over
12900:
12901: This is currently not encountered because the &ls3, &ls2,
12902: &ls (_handler) routines on the lond side do not filter out
12903: . and .. from a directory listing.
12904:
12905: =back
12906:
12907: =back
12908:
12909: =back
12910:
12911: =item *
12912:
12913: spareserver() : find server with least workload from spare.tab
12914:
12915:
12916: =item *
12917:
12918: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12919: if there is no corresponding loncapa host.
12920:
12921: =back
12922:
12923:
12924: =head2 Apache Request
12925:
12926: =over 4
12927:
12928: =item *
12929:
12930: ssi($url,%hash) : server side include, does a complete request cycle on url to
12931: localhost, posts hash
12932:
12933: =back
12934:
12935: =head2 Data to String to Data
12936:
12937: =over 4
12938:
12939: =item *
12940:
12941: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12942: and '&' separators, supports elements that are arrayrefs and hashrefs
12943:
12944: =item *
12945:
12946: hashref2str($hashref) : convert a hashref into a string complete with
12947: escaping and '=' and '&' separators, supports elements that are
12948: arrayrefs and hashrefs
12949:
12950: =item *
12951:
12952: arrayref2str($arrayref) : convert an arrayref into a string complete
12953: with escaping and '&' separators, supports elements that are arrayrefs
12954: and hashrefs
12955:
12956: =item *
12957:
12958: str2hash($string) : convert string to hash using unescaping and
12959: splitting on '=' and '&', supports elements that are arrayrefs and
12960: hashrefs
12961:
12962: =item *
12963:
12964: str2array($string) : convert string to hash using unescaping and
12965: splitting on '&', supports elements that are arrayrefs and hashrefs
12966:
12967: =back
12968:
12969: =head2 Logging Routines
12970:
12971:
12972: These routines allow one to make log messages in the lonnet.log and
12973: lonnet.perm logfiles.
12974:
12975: =over 4
12976:
12977: =item *
12978:
12979: logtouch() : make sure the logfile, lonnet.log, exists
12980:
12981: =item *
12982:
12983: logthis() : append message to the normal lonnet.log file, it gets
12984: preiodically rolled over and deleted.
12985:
12986: =item *
12987:
12988: logperm() : append a permanent message to lonnet.perm.log, this log
12989: file never gets deleted by any automated portion of the system, only
12990: messages of critical importance should go in here.
12991:
12992:
12993: =back
12994:
12995: =head2 General File Helper Routines
12996:
12997: =over 4
12998:
12999: =item *
13000:
13001: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13002: (a) files in /uploaded
13003: (i) If a local copy of the file exists -
13004: compares modification date of local copy with last-modified date for
13005: definitive version stored on home server for course. If local copy is
13006: stale, requests a new version from the home server and stores it.
13007: If the original has been removed from the home server, then local copy
13008: is unlinked.
13009: (ii) If local copy does not exist -
13010: requests the file from the home server and stores it.
13011:
13012: If $caller is 'uploadrep':
13013: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13014: for request for files originally uploaded via DOCS.
13015: - returns 'ok' if fresh local copy now available, -1 otherwise.
13016:
13017: Otherwise:
13018: This indicates a call from the content generation phase of the request.
13019: - returns the entire contents of the file or -1.
13020:
13021: (b) files in /res
13022: - returns the entire contents of a file or -1;
13023: it properly subscribes to and replicates the file if neccessary.
13024:
13025:
13026: =item *
13027:
13028: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13029: reference
13030:
13031: returns either a stat() list of data about the file or an empty list
13032: if the file doesn't exist or couldn't find out about it (connection
13033: problems or user unknown)
13034:
13035: =item *
13036:
13037: filelocation($dir,$file) : returns file system location of a file
13038: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13039: directory that relative $file lookups are to looked in ($dir of /a/dir
13040: and a file of ../bob will become /a/bob)
13041:
13042: =item *
13043:
13044: hreflocation($dir,$file) : returns file system location or a URL; same as
13045: filelocation except for hrefs
13046:
13047: =item *
13048:
13049: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13050:
13051: =back
13052:
13053: =head2 Usererfile file routines (/uploaded*)
13054:
13055: =over 4
13056:
13057: =item *
13058:
13059: userfileupload(): main rotine for putting a file in a user or course's
13060: filespace, arguments are,
13061:
13062: formname - required - this is the name of the element in $env where the
13063: filename, and the contents of the file to create/modifed exist
13064: the filename is in $env{'form.'.$formname.'.filename'} and the
13065: contents of the file is located in $env{'form.'.$formname}
13066: context - if coursedoc, store the file in the course of the active role
13067: of the current user;
13068: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13069: if 'canceloverwrite': delete file in tmp/overwrites directory
13070: subdir - required - subdirectory to put the file in under ../userfiles/
13071: if undefined, it will be placed in "unknown"
13072:
13073: (This routine calls clean_filename() to remove any dangerous
13074: characters from the filename, and then calls finuserfileupload() to
13075: complete the transaction)
13076:
13077: returns either the url of the uploaded file (/uploaded/....) if successful
13078: and /adm/notfound.html if unsuccessful
13079:
13080: =item *
13081:
13082: clean_filename(): routine for cleaing a filename up for storage in
13083: userfile space, argument is:
13084:
13085: filename - proposed filename
13086:
13087: returns: the new clean filename
13088:
13089: =item *
13090:
13091: finishuserfileupload(): routine that creates and sends the file to
13092: userspace, probably shouldn't be called directly
13093:
13094: docuname: username or courseid of destination for the file
13095: docudom: domain of user/course of destination for the file
13096: formname: same as for userfileupload()
13097: fname: filename (including subdirectories) for the file
13098: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13099: allfiles: reference to hash used to store objects found by parser
13100: codebase: reference to hash used for codebases of java objects found by parser
13101: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13102: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13103: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13104: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13105: context: if 'overwrite', will move the uploaded file from its temporary location to
13106: userfiles to facilitate overwriting a previously uploaded file with same name.
13107: mimetype: reference to scalar to accommodate mime type determined
13108: from File::MMagic if $parser = parse.
13109:
13110: returns either the url of the uploaded file (/uploaded/....) if successful
13111: and /adm/notfound.html if unsuccessful (or an error message if context
13112: was 'overwrite').
13113:
13114:
13115: =item *
13116:
13117: renameuserfile(): renames an existing userfile to a new name
13118:
13119: Args:
13120: docuname: username or courseid of destination for the file
13121: docudom: domain of user/course of destination for the file
13122: old: current file name (including any subdirs under userfiles)
13123: new: desired file name (including any subdirs under userfiles)
13124:
13125: =item *
13126:
13127: mkdiruserfile(): creates a directory is a userfiles dir
13128:
13129: Args:
13130: docuname: username or courseid of destination for the file
13131: docudom: domain of user/course of destination for the file
13132: dir: dir to create (including any subdirs under userfiles)
13133:
13134: =item *
13135:
13136: removeuserfile(): removes a file that exists in userfiles
13137:
13138: Args:
13139: docuname: username or courseid of destination for the file
13140: docudom: domain of user/course of destination for the file
13141: fname: filname to delete (including any subdirs under userfiles)
13142:
13143: =item *
13144:
13145: removeuploadedurl(): convience function for removeuserfile()
13146:
13147: Args:
13148: url: a full /uploaded/... url to delete
13149:
13150: =item *
13151:
13152: get_portfile_permissions():
13153: Args:
13154: domain: domain of user or course contain the portfolio files
13155: user: name of user or num of course contain the portfolio files
13156: Returns:
13157: hashref of a dump of the proper file_permissions.db
13158:
13159:
13160: =item *
13161:
13162: get_access_controls():
13163:
13164: Args:
13165: current_permissions: the hash ref returned from get_portfile_permissions()
13166: group: (optional) the group you want the files associated with
13167: file: (optional) the file you want access info on
13168:
13169: Returns:
13170: a hash (keys are file names) of hashes containing
13171: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13172: values are XML containing access control settings (see below)
13173:
13174: Internal notes:
13175:
13176: access controls are stored in file_permissions.db as key=value pairs.
13177: key -> path to file/file_name\0uniqueID:scope_end_start
13178: where scope -> public,guest,course,group,domains or users.
13179: end -> UNIX time for end of access (0 -> no end date)
13180: start -> UNIX time for start of access
13181:
13182: value -> XML description of access control
13183: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13184: <start></start>
13185: <end></end>
13186:
13187: <password></password> for scope type = guest
13188:
13189: <domain></domain> for scope type = course or group
13190: <number></number>
13191: <roles id="">
13192: <role></role>
13193: <access></access>
13194: <section></section>
13195: <group></group>
13196: </roles>
13197:
13198: <dom></dom> for scope type = domains
13199:
13200: <users> for scope type = users
13201: <user>
13202: <uname></uname>
13203: <udom></udom>
13204: </user>
13205: </users>
13206: </scope>
13207:
13208: Access data is also aggregated for each file in an additional key=value pair:
13209: key -> path to file/file_name\0accesscontrol
13210: value -> reference to hash
13211: hash contains key = value pairs
13212: where key = uniqueID:scope_end_start
13213: value = UNIX time record was last updated
13214:
13215: Used to improve speed of look-ups of access controls for each file.
13216:
13217: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13218:
13219: modify_access_controls():
13220:
13221: Modifies access controls for a portfolio file
13222: Args
13223: 1. file name
13224: 2. reference to hash of required changes,
13225: 3. domain
13226: 4. username
13227: where domain,username are the domain of the portfolio owner
13228: (either a user or a course)
13229:
13230: Returns:
13231: 1. result of additions or updates ('ok' or 'error', with error message).
13232: 2. result of deletions ('ok' or 'error', with error message).
13233: 3. reference to hash of any new or updated access controls.
13234: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13235: key = integer (inbound ID)
13236: value = uniqueID
13237:
13238: =back
13239:
13240: =head2 HTTP Helper Routines
13241:
13242: =over 4
13243:
13244: =item *
13245:
13246: escape() : unpack non-word characters into CGI-compatible hex codes
13247:
13248: =item *
13249:
13250: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13251:
13252: =back
13253:
13254: =head1 PRIVATE SUBROUTINES
13255:
13256: =head2 Underlying communication routines (Shouldn't call)
13257:
13258: =over 4
13259:
13260: =item *
13261:
13262: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13263:
13264: =item *
13265:
13266: reply() : uses subreply to send a message to remote machine, logs all failures
13267:
13268: =item *
13269:
13270: critical() : passes a critical message to another server; if cannot
13271: get through then place message in connection buffer directory and
13272: returns con_delayed, if incapable of saving message, returns
13273: con_failed
13274:
13275: =item *
13276:
13277: reconlonc() : tries to reconnect lonc client processes.
13278:
13279: =back
13280:
13281: =head2 Resource Access Logging
13282:
13283: =over 4
13284:
13285: =item *
13286:
13287: flushcourselogs() : flush (save) buffer logs and access logs
13288:
13289: =item *
13290:
13291: courselog($what) : save message for course in hash
13292:
13293: =item *
13294:
13295: courseacclog($what) : save message for course using &courselog(). Perform
13296: special processing for specific resource types (problems, exams, quizzes, etc).
13297:
13298: =item *
13299:
13300: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13301: as a PerlChildExitHandler
13302:
13303: =back
13304:
13305: =head2 Other
13306:
13307: =over 4
13308:
13309: =item *
13310:
13311: symblist($mapname,%newhash) : update symbolic storage links
13312:
13313: =back
13314:
13315: =cut
13316:
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