File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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1.1240:
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Sun Oct 6 14:20:36 2013 UTC (10 years, 9 months ago) by
raeburn
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- &get_domain_defaults() can take a second (optional) arg -- $ignore_cache
which causes domain configuration to be loaded from configuration.db or
domain.tab, and not cache.
- Update POD for &get_domain_defaults().
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1240 2013/10/06 14:20:36 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $apache
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$name,$id) = @_;
360: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
361: return $response;
362: }
363:
364: # -------------------------------------------------- Non-critical communication
365: sub subreply {
366: my ($cmd,$server)=@_;
367: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
368: #
369: # With loncnew process trimming, there's a timing hole between lonc server
370: # process exit and the master server picking up the listen on the AF_UNIX
371: # socket. In that time interval, a lock file will exist:
372:
373: my $lockfile=$peerfile.".lock";
374: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
375: sleep(1);
376: }
377: # At this point, either a loncnew parent is listening or an old lonc
378: # or loncnew child is listening so we can connect or everything's dead.
379: #
380: # We'll give the connection a few tries before abandoning it. If
381: # connection is not possible, we'll con_lost back to the client.
382: #
383: my $client;
384: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
385: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
386: Type => SOCK_STREAM,
387: Timeout => 10);
388: if ($client) {
389: last; # Connected!
390: } else {
391: &create_connection(&hostname($server),$server);
392: }
393: sleep(1); # Try again later if failed connection.
394: }
395: my $answer;
396: if ($client) {
397: print $client "sethost:$server:$cmd\n";
398: $answer=<$client>;
399: if (!$answer) { $answer="con_lost"; }
400: chomp($answer);
401: } else {
402: $answer = 'con_lost'; # Failed connection.
403: }
404: return $answer;
405: }
406:
407: sub reply {
408: my ($cmd,$server)=@_;
409: unless (defined(&hostname($server))) { return 'no_such_host'; }
410: my $answer=subreply($cmd,$server);
411: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
412: &logthis("<font color=\"blue\">WARNING:".
413: " $cmd to $server returned $answer</font>");
414: }
415: return $answer;
416: }
417:
418: # ----------------------------------------------------------- Send USR1 to lonc
419:
420: sub reconlonc {
421: my ($lonid) = @_;
422: my $hostname = &hostname($lonid);
423: if ($lonid) {
424: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
425: if ($hostname && -e $peerfile) {
426: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
427: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
428: Type => SOCK_STREAM,
429: Timeout => 10);
430: if ($client) {
431: print $client ("reset_retries\n");
432: my $answer=<$client>;
433: #reset just this one.
434: }
435: }
436: return;
437: }
438:
439: &logthis("Trying to reconnect lonc");
440: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
441: if (open(my $fh,"<$loncfile")) {
442: my $loncpid=<$fh>;
443: chomp($loncpid);
444: if (kill 0 => $loncpid) {
445: &logthis("lonc at pid $loncpid responding, sending USR1");
446: kill USR1 => $loncpid;
447: sleep 1;
448: } else {
449: &logthis(
450: "<font color=\"blue\">WARNING:".
451: " lonc at pid $loncpid not responding, giving up</font>");
452: }
453: } else {
454: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
455: }
456: }
457:
458: # ------------------------------------------------------ Critical communication
459:
460: sub critical {
461: my ($cmd,$server)=@_;
462: unless (&hostname($server)) {
463: &logthis("<font color=\"blue\">WARNING:".
464: " Critical message to unknown server ($server)</font>");
465: return 'no_such_host';
466: }
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: &reconlonc("$perlvar{'lonSockDir'}/$server");
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: my $now=time;
473: my $middlename=$cmd;
474: $middlename=substr($middlename,0,16);
475: $middlename=~s/\W//g;
476: my $dfilename=
477: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
478: $dumpcount++;
479: {
480: my $dfh;
481: if (open($dfh,">$dfilename")) {
482: print $dfh "$cmd\n";
483: close($dfh);
484: }
485: }
486: sleep 2;
487: my $wcmd='';
488: {
489: my $dfh;
490: if (open($dfh,"<$dfilename")) {
491: $wcmd=<$dfh>;
492: close($dfh);
493: }
494: }
495: chomp($wcmd);
496: if ($wcmd eq $cmd) {
497: &logthis("<font color=\"blue\">WARNING: ".
498: "Connection buffer $dfilename: $cmd</font>");
499: &logperm("D:$server:$cmd");
500: return 'con_delayed';
501: } else {
502: &logthis("<font color=\"red\">CRITICAL:"
503: ." Critical connection failed: $server $cmd</font>");
504: &logperm("F:$server:$cmd");
505: return 'con_failed';
506: }
507: }
508: }
509: return $answer;
510: }
511:
512: # ------------------------------------------- check if return value is an error
513:
514: sub error {
515: my ($result) = @_;
516: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
517: if ($2 == 2) { return undef; }
518: return $1;
519: }
520: return undef;
521: }
522:
523: sub convert_and_load_session_env {
524: my ($lonidsdir,$handle)=@_;
525: my @profile;
526: {
527: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
528: if (!$opened) {
529: return 0;
530: }
531: flock($idf,LOCK_SH);
532: @profile=<$idf>;
533: close($idf);
534: }
535: my %temp_env;
536: foreach my $line (@profile) {
537: if ($line !~ m/=/) {
538: return 0;
539: }
540: chomp($line);
541: my ($envname,$envvalue)=split(/=/,$line,2);
542: $temp_env{&unescape($envname)} = &unescape($envvalue);
543: }
544: unlink("$lonidsdir/$handle.id");
545: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
546: 0640)) {
547: %disk_env = %temp_env;
548: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
549: untie(%disk_env);
550: }
551: return 1;
552: }
553:
554: # ------------------------------------------- Transfer profile into environment
555: my $env_loaded;
556: sub transfer_profile_to_env {
557: my ($lonidsdir,$handle,$force_transfer) = @_;
558: if (!$force_transfer && $env_loaded) { return; }
559:
560: if (!defined($lonidsdir)) {
561: $lonidsdir = $perlvar{'lonIDsDir'};
562: }
563: if (!defined($handle)) {
564: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
565: }
566:
567: my $convert;
568: {
569: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
570: if (!$opened) {
571: return;
572: }
573: flock($idf,LOCK_SH);
574: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
575: &GDBM_READER(),0640)) {
576: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
577: untie(%disk_env);
578: } else {
579: $convert = 1;
580: }
581: }
582: if ($convert) {
583: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
584: &logthis("Failed to load session, or convert session.");
585: }
586: }
587:
588: my %remove;
589: while ( my $envname = each(%env) ) {
590: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
591: if ($time < time-300) {
592: $remove{$key}++;
593: }
594: }
595: }
596:
597: $env{'user.environment'} = "$lonidsdir/$handle.id";
598: $env_loaded=1;
599: foreach my $expired_key (keys(%remove)) {
600: &delenv($expired_key);
601: }
602: }
603:
604: # ---------------------------------------------------- Check for valid session
605: sub check_for_valid_session {
606: my ($r,$name) = @_;
607: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
608: if ($name eq '') {
609: $name = 'lonID';
610: }
611: my $lonid=$cookies{$name};
612: return undef if (!$lonid);
613:
614: my $handle=&LONCAPA::clean_handle($lonid->value);
615: my $lonidsdir;
616: if ($name eq 'lonDAV') {
617: $lonidsdir=$r->dir_config('lonDAVsessDir');
618: } else {
619: $lonidsdir=$r->dir_config('lonIDsDir');
620: }
621: return undef if (!-e "$lonidsdir/$handle.id");
622:
623: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
624: return undef if (!$opened);
625:
626: flock($idf,LOCK_SH);
627: my %disk_env;
628: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
629: &GDBM_READER(),0640)) {
630: return undef;
631: }
632:
633: if (!defined($disk_env{'user.name'})
634: || !defined($disk_env{'user.domain'})) {
635: return undef;
636: }
637: if (($r->user() eq '') && ($apache >= 2.4)) {
638: if ($disk_env{'user.domain'} eq $r->dir_config('lonDefDomain')) {
639: $r->user($disk_env{'user.name'});
640: } else {
641: $r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});
642: }
643: }
644: return $handle;
645: }
646:
647: sub timed_flock {
648: my ($file,$lock_type) = @_;
649: my $failed=0;
650: eval {
651: local $SIG{__DIE__}='DEFAULT';
652: local $SIG{ALRM}=sub {
653: $failed=1;
654: die("failed lock");
655: };
656: alarm(13);
657: flock($file,$lock_type);
658: alarm(0);
659: };
660: if ($failed) {
661: return undef;
662: } else {
663: return 1;
664: }
665: }
666:
667: # ---------------------------------------------------------- Append Environment
668:
669: sub appenv {
670: my ($newenv,$roles) = @_;
671: if (ref($newenv) eq 'HASH') {
672: foreach my $key (keys(%{$newenv})) {
673: my $refused = 0;
674: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
675: $refused = 1;
676: if (ref($roles) eq 'ARRAY') {
677: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
678: if (grep(/^\Q$role\E$/,@{$roles})) {
679: $refused = 0;
680: }
681: }
682: }
683: if ($refused) {
684: &logthis("<font color=\"blue\">WARNING: ".
685: "Attempt to modify environment ".$key." to ".$newenv->{$key}
686: .'</font>');
687: delete($newenv->{$key});
688: } else {
689: $env{$key}=$newenv->{$key};
690: }
691: }
692: my $opened = open(my $env_file,'+<',$env{'user.environment'});
693: if ($opened
694: && &timed_flock($env_file,LOCK_EX)
695: &&
696: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
697: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
698: while (my ($key,$value) = each(%{$newenv})) {
699: $disk_env{$key} = $value;
700: }
701: untie(%disk_env);
702: }
703: }
704: return 'ok';
705: }
706: # ----------------------------------------------------- Delete from Environment
707:
708: sub delenv {
709: my ($delthis,$regexp,$roles) = @_;
710: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
711: my $refused = 1;
712: if (ref($roles) eq 'ARRAY') {
713: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
714: if (grep(/^\Q$role\E$/,@{$roles})) {
715: $refused = 0;
716: }
717: }
718: if ($refused) {
719: &logthis("<font color=\"blue\">WARNING: ".
720: "Attempt to delete from environment ".$delthis);
721: return 'error';
722: }
723: }
724: my $opened = open(my $env_file,'+<',$env{'user.environment'});
725: if ($opened
726: && &timed_flock($env_file,LOCK_EX)
727: &&
728: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
729: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
730: foreach my $key (keys(%disk_env)) {
731: if ($regexp) {
732: if ($key=~/^$delthis/) {
733: delete($env{$key});
734: delete($disk_env{$key});
735: }
736: } else {
737: if ($key=~/^\Q$delthis\E/) {
738: delete($env{$key});
739: delete($disk_env{$key});
740: }
741: }
742: }
743: untie(%disk_env);
744: }
745: return 'ok';
746: }
747:
748: sub get_env_multiple {
749: my ($name) = @_;
750: my @values;
751: if (defined($env{$name})) {
752: # exists is it an array
753: if (ref($env{$name})) {
754: @values=@{ $env{$name} };
755: } else {
756: $values[0]=$env{$name};
757: }
758: }
759: return(@values);
760: }
761:
762: # ------------------------------------------------------------------- Locking
763:
764: sub set_lock {
765: my ($text)=@_;
766: $locknum++;
767: my $id=$$.'-'.$locknum;
768: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
769: 'session.lock.'.$id => $text});
770: return $id;
771: }
772:
773: sub get_locks {
774: my $num=0;
775: my %texts=();
776: foreach my $lock (split(/\,/,$env{'session.locks'})) {
777: if ($lock=~/\w/) {
778: $num++;
779: $texts{$lock}=$env{'session.lock.'.$lock};
780: }
781: }
782: return ($num,%texts);
783: }
784:
785: sub remove_lock {
786: my ($id)=@_;
787: my $newlocks='';
788: foreach my $lock (split(/\,/,$env{'session.locks'})) {
789: if (($lock=~/\w/) && ($lock ne $id)) {
790: $newlocks.=','.$lock;
791: }
792: }
793: &appenv({'session.locks' => $newlocks});
794: &delenv('session.lock.'.$id);
795: }
796:
797: sub remove_all_locks {
798: my $activelocks=$env{'session.locks'};
799: foreach my $lock (split(/\,/,$env{'session.locks'})) {
800: if ($lock=~/\w/) {
801: &remove_lock($lock);
802: }
803: }
804: }
805:
806:
807: # ------------------------------------------ Find out current server userload
808: sub userload {
809: my $numusers=0;
810: {
811: opendir(LONIDS,$perlvar{'lonIDsDir'});
812: my $filename;
813: my $curtime=time;
814: while ($filename=readdir(LONIDS)) {
815: next if ($filename eq '.' || $filename eq '..');
816: next if ($filename =~ /publicuser_\d+\.id/);
817: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
818: if ($curtime-$mtime < 1800) { $numusers++; }
819: }
820: closedir(LONIDS);
821: }
822: my $userloadpercent=0;
823: my $maxuserload=$perlvar{'lonUserLoadLim'};
824: if ($maxuserload) {
825: $userloadpercent=100*$numusers/$maxuserload;
826: }
827: $userloadpercent=sprintf("%.2f",$userloadpercent);
828: return $userloadpercent;
829: }
830:
831: # ------------------------------ Find server with least workload from spare.tab
832:
833: sub spareserver {
834: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
835: my $spare_server;
836: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
837: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
838: : $userloadpercent;
839: my ($uint_dom,$remotesessions);
840: if (($udom ne '') && (&domain($udom) ne '')) {
841: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
842: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
843: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
844: $remotesessions = $udomdefaults{'remotesessions'};
845: }
846: my $spareshash = &this_host_spares($udom);
847: if (ref($spareshash) eq 'HASH') {
848: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
849: foreach my $try_server (@{ $spareshash->{'primary'} }) {
850: if ($uint_dom) {
851: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
852: $try_server));
853: }
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858:
859: my $found_server = ($spare_server ne '' && $lowest_load < 100);
860:
861: if (!$found_server) {
862: if (ref($spareshash->{'default'}) eq 'ARRAY') {
863: foreach my $try_server (@{ $spareshash->{'default'} }) {
864: if ($uint_dom) {
865: next unless (&spare_can_host($udom,$uint_dom,
866: $remotesessions,$try_server));
867: }
868: ($spare_server, $lowest_load) =
869: &compare_server_load($try_server, $spare_server, $lowest_load);
870: }
871: }
872: }
873: }
874:
875: if (!$want_server_name) {
876: my $protocol = 'http';
877: if ($protocol{$spare_server} eq 'https') {
878: $protocol = $protocol{$spare_server};
879: }
880: if (defined($spare_server)) {
881: my $hostname = &hostname($spare_server);
882: if (defined($hostname)) {
883: $spare_server = $protocol.'://'.$hostname;
884: }
885: }
886: }
887: return $spare_server;
888: }
889:
890: sub compare_server_load {
891: my ($try_server, $spare_server, $lowest_load) = @_;
892:
893: my $loadans = &reply('load', $try_server);
894: my $userloadans = &reply('userload',$try_server);
895:
896: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
897: return ($spare_server, $lowest_load); #didn't get a number from the server
898: }
899:
900: my $load;
901: if ($loadans =~ /\d/) {
902: if ($userloadans =~ /\d/) {
903: #both are numbers, pick the bigger one
904: $load = ($loadans > $userloadans) ? $loadans
905: : $userloadans;
906: } else {
907: $load = $loadans;
908: }
909: } else {
910: $load = $userloadans;
911: }
912:
913: if (($load =~ /\d/) && ($load < $lowest_load)) {
914: $spare_server = $try_server;
915: $lowest_load = $load;
916: }
917: return ($spare_server,$lowest_load);
918: }
919:
920: # --------------------------- ask offload servers if user already has a session
921: sub find_existing_session {
922: my ($udom,$uname) = @_;
923: my $spareshash = &this_host_spares($udom);
924: if (ref($spareshash) eq 'HASH') {
925: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
926: foreach my $try_server (@{ $spareshash->{'primary'} }) {
927: return $try_server if (&has_user_session($try_server, $udom, $uname));
928: }
929: }
930: if (ref($spareshash->{'default'}) eq 'ARRAY') {
931: foreach my $try_server (@{ $spareshash->{'default'} }) {
932: return $try_server if (&has_user_session($try_server, $udom, $uname));
933: }
934: }
935: }
936: return;
937: }
938:
939: # -------------------------------- ask if server already has a session for user
940: sub has_user_session {
941: my ($lonid,$udom,$uname) = @_;
942: my $result = &reply(join(':','userhassession',
943: map {&escape($_)} ($udom,$uname)),$lonid);
944: return 1 if ($result eq 'ok');
945:
946: return 0;
947: }
948:
949: # --------- determine least loaded server in a user's domain which allows login
950:
951: sub choose_server {
952: my ($udom,$checkloginvia) = @_;
953: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
954: my %servers = &get_servers($udom);
955: my $lowest_load = 30000;
956: my ($login_host,$hostname,$portal_path,$isredirect);
957: foreach my $lonhost (keys(%servers)) {
958: my $loginvia;
959: if ($checkloginvia) {
960: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
961: if ($loginvia) {
962: my ($server,$path) = split(/:/,$loginvia);
963: ($login_host, $lowest_load) =
964: &compare_server_load($server, $login_host, $lowest_load);
965: if ($login_host eq $server) {
966: $portal_path = $path;
967: $isredirect = 1;
968: }
969: } else {
970: ($login_host, $lowest_load) =
971: &compare_server_load($lonhost, $login_host, $lowest_load);
972: if ($login_host eq $lonhost) {
973: $portal_path = '';
974: $isredirect = '';
975: }
976: }
977: } else {
978: ($login_host, $lowest_load) =
979: &compare_server_load($lonhost, $login_host, $lowest_load);
980: }
981: }
982: if ($login_host ne '') {
983: $hostname = &hostname($login_host);
984: }
985: return ($login_host,$hostname,$portal_path,$isredirect);
986: }
987:
988: # --------------------------------------------- Try to change a user's password
989:
990: sub changepass {
991: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
992: $currentpass = &escape($currentpass);
993: $newpass = &escape($newpass);
994: my $lonhost = $perlvar{'lonHostID'};
995: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
996: $server);
997: if (! $answer) {
998: &logthis("No reply on password change request to $server ".
999: "by $uname in domain $udom.");
1000: } elsif ($answer =~ "^ok") {
1001: &logthis("$uname in $udom successfully changed their password ".
1002: "on $server.");
1003: } elsif ($answer =~ "^pwchange_failure") {
1004: &logthis("$uname in $udom was unable to change their password ".
1005: "on $server. The action was blocked by either lcpasswd ".
1006: "or pwchange");
1007: } elsif ($answer =~ "^non_authorized") {
1008: &logthis("$uname in $udom did not get their password correct when ".
1009: "attempting to change it on $server.");
1010: } elsif ($answer =~ "^auth_mode_error") {
1011: &logthis("$uname in $udom attempted to change their password despite ".
1012: "not being locally or internally authenticated on $server.");
1013: } elsif ($answer =~ "^unknown_user") {
1014: &logthis("$uname in $udom attempted to change their password ".
1015: "on $server but were unable to because $server is not ".
1016: "their home server.");
1017: } elsif ($answer =~ "^refused") {
1018: &logthis("$server refused to change $uname in $udom password because ".
1019: "it was sent an unencrypted request to change the password.");
1020: } elsif ($answer =~ "invalid_client") {
1021: &logthis("$server refused to change $uname in $udom password because ".
1022: "it was a reset by e-mail originating from an invalid server.");
1023: }
1024: return $answer;
1025: }
1026:
1027: # ----------------------- Try to determine user's current authentication scheme
1028:
1029: sub queryauthenticate {
1030: my ($uname,$udom)=@_;
1031: my $uhome=&homeserver($uname,$udom);
1032: if (!$uhome) {
1033: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1034: return 'no_host';
1035: }
1036: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1037: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1038: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1039: }
1040: return $answer;
1041: }
1042:
1043: # --------- Try to authenticate user from domain's lib servers (first this one)
1044:
1045: sub authenticate {
1046: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1047: $upass=&escape($upass);
1048: $uname= &LONCAPA::clean_username($uname);
1049: my $uhome=&homeserver($uname,$udom,1);
1050: my $newhome;
1051: if ((!$uhome) || ($uhome eq 'no_host')) {
1052: # Maybe the machine was offline and only re-appeared again recently?
1053: &reconlonc();
1054: # One more
1055: $uhome=&homeserver($uname,$udom,1);
1056: if (($uhome eq 'no_host') && $checkdefauth) {
1057: if (defined(&domain($udom,'primary'))) {
1058: $newhome=&domain($udom,'primary');
1059: }
1060: if ($newhome ne '') {
1061: $uhome = $newhome;
1062: }
1063: }
1064: if ((!$uhome) || ($uhome eq 'no_host')) {
1065: &logthis("User $uname at $udom is unknown in authenticate");
1066: return 'no_host';
1067: }
1068: }
1069: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1070: if ($answer eq 'authorized') {
1071: if ($newhome) {
1072: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1073: return 'no_account_on_host';
1074: } else {
1075: &logthis("User $uname at $udom authorized by $uhome");
1076: return $uhome;
1077: }
1078: }
1079: if ($answer eq 'non_authorized') {
1080: &logthis("User $uname at $udom rejected by $uhome");
1081: return 'no_host';
1082: }
1083: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1084: return 'no_host';
1085: }
1086:
1087: sub can_host_session {
1088: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1089: my $canhost = 1;
1090: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1091: if (ref($remotesessions) eq 'HASH') {
1092: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1094: $canhost = 0;
1095: } else {
1096: $canhost = 1;
1097: }
1098: }
1099: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1100: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1101: $canhost = 1;
1102: } else {
1103: $canhost = 0;
1104: }
1105: }
1106: if ($canhost) {
1107: if ($remotesessions->{'version'} ne '') {
1108: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1109: if ($reqmajor ne '' && $reqminor ne '') {
1110: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1111: my $major = $1;
1112: my $minor = $2;
1113: if (($major < $reqmajor ) ||
1114: (($major == $reqmajor) && ($minor < $reqminor))) {
1115: $canhost = 0;
1116: }
1117: } else {
1118: $canhost = 0;
1119: }
1120: }
1121: }
1122: }
1123: }
1124: if ($canhost) {
1125: if (ref($hostedsessions) eq 'HASH') {
1126: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1127: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1128: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1129: if (($uint_dom ne '') &&
1130: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1131: $canhost = 0;
1132: } else {
1133: $canhost = 1;
1134: }
1135: }
1136: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1137: if (($uint_dom ne '') &&
1138: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1139: $canhost = 1;
1140: } else {
1141: $canhost = 0;
1142: }
1143: }
1144: }
1145: }
1146: return $canhost;
1147: }
1148:
1149: sub spare_can_host {
1150: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1151: my $canhost=1;
1152: my @intdoms;
1153: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1154: if (ref($internet_names) eq 'ARRAY') {
1155: @intdoms = @{$internet_names};
1156: }
1157: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1158: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1159: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1160: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1161: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1162: $canhost = &can_host_session($udom,$try_server,$remoterev,
1163: $remotesessions,
1164: $defdomdefaults{'hostedsessions'});
1165: }
1166: return $canhost;
1167: }
1168:
1169: sub this_host_spares {
1170: my ($dom) = @_;
1171: my ($dom_in_use,$lonhost_in_use,$result);
1172: my @hosts = ¤t_machine_ids();
1173: foreach my $lonhost (@hosts) {
1174: if (&host_domain($lonhost) eq $dom) {
1175: $dom_in_use = $dom;
1176: $lonhost_in_use = $lonhost;
1177: last;
1178: }
1179: }
1180: if ($dom_in_use ne '') {
1181: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1182: }
1183: if (ref($result) ne 'HASH') {
1184: $lonhost_in_use = $perlvar{'lonHostID'};
1185: $dom_in_use = &host_domain($lonhost_in_use);
1186: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1187: if (ref($result) ne 'HASH') {
1188: $result = \%spareid;
1189: }
1190: }
1191: return $result;
1192: }
1193:
1194: sub spares_for_offload {
1195: my ($dom_in_use,$lonhost_in_use) = @_;
1196: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1197: if (defined($cached)) {
1198: return $result;
1199: } else {
1200: my $cachetime = 60*60*24;
1201: my %domconfig =
1202: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1203: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1204: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1205: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1206: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1207: }
1208: }
1209: }
1210: }
1211: return;
1212: }
1213:
1214: sub get_lonbalancer_config {
1215: my ($servers) = @_;
1216: my ($currbalancer,$currtargets);
1217: if (ref($servers) eq 'HASH') {
1218: foreach my $server (keys(%{$servers})) {
1219: my %what = (
1220: spareid => 1,
1221: perlvar => 1,
1222: );
1223: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1224: if ($result eq 'ok') {
1225: if (ref($returnhash) eq 'HASH') {
1226: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1227: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1228: $currbalancer = $server;
1229: $currtargets = {};
1230: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1231: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1232: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1233: }
1234: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1235: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1236: }
1237: }
1238: last;
1239: }
1240: }
1241: }
1242: }
1243: }
1244: }
1245: return ($currbalancer,$currtargets);
1246: }
1247:
1248: sub check_loadbalancing {
1249: my ($uname,$udom) = @_;
1250: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1251: $rule_in_effect,$offloadto,$otherserver);
1252: my $lonhost = $perlvar{'lonHostID'};
1253: my @hosts = ¤t_machine_ids();
1254: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1255: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1256: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1257: my $serverhomedom = &host_domain($lonhost);
1258:
1259: my $cachetime = 60*60*24;
1260:
1261: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1262: $dom_in_use = $udom;
1263: $homeintdom = 1;
1264: } else {
1265: $dom_in_use = $serverhomedom;
1266: }
1267: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1268: unless (defined($cached)) {
1269: my %domconfig =
1270: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1271: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1272: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1273: }
1274: }
1275: if (ref($result) eq 'HASH') {
1276: ($is_balancer,$currtargets,$currrules) =
1277: &check_balancer_result($result,@hosts);
1278: if ($is_balancer) {
1279: if (ref($currrules) eq 'HASH') {
1280: if ($homeintdom) {
1281: if ($uname ne '') {
1282: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1283: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1284: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1285: $rule_in_effect = $currrules->{'_LC_author'};
1286: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1287: $rule_in_effect = $currrules->{'_LC_adv'}
1288: }
1289: }
1290: if ($rule_in_effect eq '') {
1291: my %userenv = &userenvironment($udom,$uname,'inststatus');
1292: if ($userenv{'inststatus'} ne '') {
1293: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1294: my ($othertitle,$usertypes,$types) =
1295: &Apache::loncommon::sorted_inst_types($udom);
1296: if (ref($types) eq 'ARRAY') {
1297: foreach my $type (@{$types}) {
1298: if (grep(/^\Q$type\E$/,@statuses)) {
1299: if (exists($currrules->{$type})) {
1300: $rule_in_effect = $currrules->{$type};
1301: }
1302: }
1303: }
1304: }
1305: } else {
1306: if (exists($currrules->{'default'})) {
1307: $rule_in_effect = $currrules->{'default'};
1308: }
1309: }
1310: }
1311: } else {
1312: if (exists($currrules->{'default'})) {
1313: $rule_in_effect = $currrules->{'default'};
1314: }
1315: }
1316: } else {
1317: if ($currrules->{'_LC_external'} ne '') {
1318: $rule_in_effect = $currrules->{'_LC_external'};
1319: }
1320: }
1321: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1322: $uname,$udom);
1323: }
1324: }
1325: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1326: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1327: unless (defined($cached)) {
1328: my %domconfig =
1329: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1330: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1331: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1332: }
1333: }
1334: if (ref($result) eq 'HASH') {
1335: ($is_balancer,$currtargets,$currrules) =
1336: &check_balancer_result($result,@hosts);
1337: if ($is_balancer) {
1338: if (ref($currrules) eq 'HASH') {
1339: if ($currrules->{'_LC_internetdom'} ne '') {
1340: $rule_in_effect = $currrules->{'_LC_internetdom'};
1341: }
1342: }
1343: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1344: $uname,$udom);
1345: }
1346: } else {
1347: if ($perlvar{'lonBalancer'} eq 'yes') {
1348: $is_balancer = 1;
1349: $offloadto = &this_host_spares($dom_in_use);
1350: }
1351: }
1352: } else {
1353: if ($perlvar{'lonBalancer'} eq 'yes') {
1354: $is_balancer = 1;
1355: $offloadto = &this_host_spares($dom_in_use);
1356: }
1357: }
1358: if ($is_balancer) {
1359: my $lowest_load = 30000;
1360: if (ref($offloadto) eq 'HASH') {
1361: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1362: foreach my $try_server (@{$offloadto->{'primary'}}) {
1363: ($otherserver,$lowest_load) =
1364: &compare_server_load($try_server,$otherserver,$lowest_load);
1365: }
1366: }
1367: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1368:
1369: if (!$found_server) {
1370: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1371: foreach my $try_server (@{$offloadto->{'default'}}) {
1372: ($otherserver,$lowest_load) =
1373: &compare_server_load($try_server,$otherserver,$lowest_load);
1374: }
1375: }
1376: }
1377: } elsif (ref($offloadto) eq 'ARRAY') {
1378: if (@{$offloadto} == 1) {
1379: $otherserver = $offloadto->[0];
1380: } elsif (@{$offloadto} > 1) {
1381: foreach my $try_server (@{$offloadto}) {
1382: ($otherserver,$lowest_load) =
1383: &compare_server_load($try_server,$otherserver,$lowest_load);
1384: }
1385: }
1386: }
1387: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1388: $is_balancer = 0;
1389: if ($uname ne '' && $udom ne '') {
1390: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1391:
1392: &appenv({'user.loadbalexempt' => $lonhost,
1393: 'user.loadbalcheck.time' => time});
1394: }
1395: }
1396: }
1397: }
1398: return ($is_balancer,$otherserver);
1399: }
1400:
1401: sub check_balancer_result {
1402: my ($result,@hosts) = @_;
1403: my ($is_balancer,$currtargets,$currrules);
1404: if (ref($result) eq 'HASH') {
1405: if ($result->{'lonhost'} ne '') {
1406: my $currbalancer = $result->{'lonhost'};
1407: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1408: $is_balancer = 1;
1409: $currtargets = $result->{'targets'};
1410: $currrules = $result->{'rules'};
1411: }
1412: } else {
1413: foreach my $key (keys(%{$result})) {
1414: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1415: (ref($result->{$key}) eq 'HASH')) {
1416: $is_balancer = 1;
1417: $currrules = $result->{$key}{'rules'};
1418: $currtargets = $result->{$key}{'targets'};
1419: last;
1420: }
1421: }
1422: }
1423: }
1424: return ($is_balancer,$currtargets,$currrules);
1425: }
1426:
1427: sub get_loadbalancer_targets {
1428: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1429: my $offloadto;
1430: if ($rule_in_effect eq 'none') {
1431: return [$perlvar{'lonHostID'}];
1432: } elsif ($rule_in_effect eq '') {
1433: $offloadto = $currtargets;
1434: } else {
1435: if ($rule_in_effect eq 'homeserver') {
1436: my $homeserver = &homeserver($uname,$udom);
1437: if ($homeserver ne 'no_host') {
1438: $offloadto = [$homeserver];
1439: }
1440: } elsif ($rule_in_effect eq 'externalbalancer') {
1441: my %domconfig =
1442: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1443: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1444: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1445: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1446: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1447: }
1448: }
1449: } else {
1450: my %servers = &internet_dom_servers($udom);
1451: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1452: if (&hostname($remotebalancer) ne '') {
1453: $offloadto = [$remotebalancer];
1454: }
1455: }
1456: } elsif (&hostname($rule_in_effect) ne '') {
1457: $offloadto = [$rule_in_effect];
1458: }
1459: }
1460: return $offloadto;
1461: }
1462:
1463: sub internet_dom_servers {
1464: my ($dom) = @_;
1465: my (%uniqservers,%servers);
1466: my $primaryserver = &hostname(&domain($dom,'primary'));
1467: my @machinedoms = &machine_domains($primaryserver);
1468: foreach my $mdom (@machinedoms) {
1469: my %currservers = %servers;
1470: my %server = &get_servers($mdom);
1471: %servers = (%currservers,%server);
1472: }
1473: my %by_hostname;
1474: foreach my $id (keys(%servers)) {
1475: push(@{$by_hostname{$servers{$id}}},$id);
1476: }
1477: foreach my $hostname (sort(keys(%by_hostname))) {
1478: if (@{$by_hostname{$hostname}} > 1) {
1479: my $match = 0;
1480: foreach my $id (@{$by_hostname{$hostname}}) {
1481: if (&host_domain($id) eq $dom) {
1482: $uniqservers{$id} = $hostname;
1483: $match = 1;
1484: }
1485: }
1486: unless ($match) {
1487: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1488: }
1489: } else {
1490: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1491: }
1492: }
1493: return %uniqservers;
1494: }
1495:
1496: # ---------------------- Find the homebase for a user from domain's lib servers
1497:
1498: my %homecache;
1499: sub homeserver {
1500: my ($uname,$udom,$ignoreBadCache)=@_;
1501: my $index="$uname:$udom";
1502:
1503: if (exists($homecache{$index})) { return $homecache{$index}; }
1504:
1505: my %servers = &get_servers($udom,'library');
1506: foreach my $tryserver (keys(%servers)) {
1507: next if ($ignoreBadCache ne 'true' &&
1508: exists($badServerCache{$tryserver}));
1509:
1510: my $answer=reply("home:$udom:$uname",$tryserver);
1511: if ($answer eq 'found') {
1512: delete($badServerCache{$tryserver});
1513: return $homecache{$index}=$tryserver;
1514: } elsif ($answer eq 'no_host') {
1515: $badServerCache{$tryserver}=1;
1516: }
1517: }
1518: return 'no_host';
1519: }
1520:
1521: # ------------------------------------- Find the usernames behind a list of IDs
1522:
1523: sub idget {
1524: my ($udom,@ids)=@_;
1525: my %returnhash=();
1526:
1527: my %servers = &get_servers($udom,'library');
1528: foreach my $tryserver (keys(%servers)) {
1529: my $idlist=join('&',@ids);
1530: $idlist=~tr/A-Z/a-z/;
1531: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1532: my @answer=();
1533: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1534: @answer=split(/\&/,$reply);
1535: } ;
1536: my $i;
1537: for ($i=0;$i<=$#ids;$i++) {
1538: if ($answer[$i]) {
1539: $returnhash{$ids[$i]}=$answer[$i];
1540: }
1541: }
1542: }
1543: return %returnhash;
1544: }
1545:
1546: # ------------------------------------- Find the IDs behind a list of usernames
1547:
1548: sub idrget {
1549: my ($udom,@unames)=@_;
1550: my %returnhash=();
1551: foreach my $uname (@unames) {
1552: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1553: }
1554: return %returnhash;
1555: }
1556:
1557: # ------------------------------- Store away a list of names and associated IDs
1558:
1559: sub idput {
1560: my ($udom,%ids)=@_;
1561: my %servers=();
1562: foreach my $uname (keys(%ids)) {
1563: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1564: my $uhom=&homeserver($uname,$udom);
1565: if ($uhom ne 'no_host') {
1566: my $id=&escape($ids{$uname});
1567: $id=~tr/A-Z/a-z/;
1568: my $esc_unam=&escape($uname);
1569: if ($servers{$uhom}) {
1570: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1571: } else {
1572: $servers{$uhom}=$id.'='.$esc_unam;
1573: }
1574: }
1575: }
1576: foreach my $server (keys(%servers)) {
1577: &critical('idput:'.$udom.':'.$servers{$server},$server);
1578: }
1579: }
1580:
1581: # ---------------------------------------- Delete unwanted IDs from ids.db file
1582:
1583: sub iddel {
1584: my ($udom,$idshashref,$uhome)=@_;
1585: my %result=();
1586: unless (ref($idshashref) eq 'HASH') {
1587: return %result;
1588: }
1589: my %servers=();
1590: while (my ($id,$uname) = each(%{$idshashref})) {
1591: my $uhom;
1592: if ($uhome) {
1593: $uhom = $uhome;
1594: } else {
1595: $uhom=&homeserver($uname,$udom);
1596: }
1597: if ($uhom ne 'no_host') {
1598: if ($servers{$uhom}) {
1599: $servers{$uhom}.='&'.&escape($id);
1600: } else {
1601: $servers{$uhom}=&escape($id);
1602: }
1603: }
1604: }
1605: foreach my $server (keys(%servers)) {
1606: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1607: }
1608: return %result;
1609: }
1610:
1611: # ------------------------------dump from db file owned by domainconfig user
1612: sub dump_dom {
1613: my ($namespace, $udom, $regexp) = @_;
1614:
1615: $udom ||= $env{'user.domain'};
1616:
1617: return () unless $udom;
1618:
1619: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1620: }
1621:
1622: # ------------------------------------------ get items from domain db files
1623:
1624: sub get_dom {
1625: my ($namespace,$storearr,$udom,$uhome)=@_;
1626: my $items='';
1627: foreach my $item (@$storearr) {
1628: $items.=&escape($item).'&';
1629: }
1630: $items=~s/\&$//;
1631: if (!$udom) {
1632: $udom=$env{'user.domain'};
1633: if (defined(&domain($udom,'primary'))) {
1634: $uhome=&domain($udom,'primary');
1635: } else {
1636: undef($uhome);
1637: }
1638: } else {
1639: if (!$uhome) {
1640: if (defined(&domain($udom,'primary'))) {
1641: $uhome=&domain($udom,'primary');
1642: }
1643: }
1644: }
1645: if ($udom && $uhome && ($uhome ne 'no_host')) {
1646: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1647: my %returnhash;
1648: if ($rep eq '' || $rep =~ /^error: 2 /) {
1649: return %returnhash;
1650: }
1651: my @pairs=split(/\&/,$rep);
1652: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1653: return @pairs;
1654: }
1655: my $i=0;
1656: foreach my $item (@$storearr) {
1657: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1658: $i++;
1659: }
1660: return %returnhash;
1661: } else {
1662: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1663: }
1664: }
1665:
1666: # -------------------------------------------- put items in domain db files
1667:
1668: sub put_dom {
1669: my ($namespace,$storehash,$udom,$uhome)=@_;
1670: if (!$udom) {
1671: $udom=$env{'user.domain'};
1672: if (defined(&domain($udom,'primary'))) {
1673: $uhome=&domain($udom,'primary');
1674: } else {
1675: undef($uhome);
1676: }
1677: } else {
1678: if (!$uhome) {
1679: if (defined(&domain($udom,'primary'))) {
1680: $uhome=&domain($udom,'primary');
1681: }
1682: }
1683: }
1684: if ($udom && $uhome && ($uhome ne 'no_host')) {
1685: my $items='';
1686: foreach my $item (keys(%$storehash)) {
1687: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1688: }
1689: $items=~s/\&$//;
1690: return &reply("putdom:$udom:$namespace:$items",$uhome);
1691: } else {
1692: &logthis("put_dom failed - no homeserver and/or domain");
1693: }
1694: }
1695:
1696: # --------------------- newput for items in db file owned by domainconfig user
1697: sub newput_dom {
1698: my ($namespace,$storehash,$udom) = @_;
1699: my $result;
1700: if (!$udom) {
1701: $udom=$env{'user.domain'};
1702: }
1703: if ($udom) {
1704: my $uname = &get_domainconfiguser($udom);
1705: $result = &newput($namespace,$storehash,$udom,$uname);
1706: }
1707: return $result;
1708: }
1709:
1710: # --------------------- delete for items in db file owned by domainconfig user
1711: sub del_dom {
1712: my ($namespace,$storearr,$udom)=@_;
1713: if (ref($storearr) eq 'ARRAY') {
1714: if (!$udom) {
1715: $udom=$env{'user.domain'};
1716: }
1717: if ($udom) {
1718: my $uname = &get_domainconfiguser($udom);
1719: return &del($namespace,$storearr,$udom,$uname);
1720: }
1721: }
1722: }
1723:
1724: # ----------------------------------construct domainconfig user for a domain
1725: sub get_domainconfiguser {
1726: my ($udom) = @_;
1727: return $udom.'-domainconfig';
1728: }
1729:
1730: sub retrieve_inst_usertypes {
1731: my ($udom) = @_;
1732: my (%returnhash,@order);
1733: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1734: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1735: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1736: %returnhash = %{$domdefs{'inststatustypes'}};
1737: @order = @{$domdefs{'inststatusorder'}};
1738: } else {
1739: if (defined(&domain($udom,'primary'))) {
1740: my $uhome=&domain($udom,'primary');
1741: my $rep=&reply("inst_usertypes:$udom",$uhome);
1742: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1743: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1744: return (\%returnhash,\@order);
1745: }
1746: my ($hashitems,$orderitems) = split(/:/,$rep);
1747: my @pairs=split(/\&/,$hashitems);
1748: foreach my $item (@pairs) {
1749: my ($key,$value)=split(/=/,$item,2);
1750: $key = &unescape($key);
1751: next if ($key =~ /^error: 2 /);
1752: $returnhash{$key}=&thaw_unescape($value);
1753: }
1754: my @esc_order = split(/\&/,$orderitems);
1755: foreach my $item (@esc_order) {
1756: push(@order,&unescape($item));
1757: }
1758: } else {
1759: &logthis("get_dom failed - no primary domain server for $udom");
1760: }
1761: }
1762: return (\%returnhash,\@order);
1763: }
1764:
1765: sub is_domainimage {
1766: my ($url) = @_;
1767: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1768: if (&domain($1) ne '') {
1769: return '1';
1770: }
1771: }
1772: return;
1773: }
1774:
1775: sub inst_directory_query {
1776: my ($srch) = @_;
1777: my $udom = $srch->{'srchdomain'};
1778: my %results;
1779: my $homeserver = &domain($udom,'primary');
1780: my $outcome;
1781: if ($homeserver ne '') {
1782: my $queryid=&reply("querysend:instdirsearch:".
1783: &escape($srch->{'srchby'}).':'.
1784: &escape($srch->{'srchterm'}).':'.
1785: &escape($srch->{'srchtype'}),$homeserver);
1786: my $host=&hostname($homeserver);
1787: if ($queryid !~/^\Q$host\E\_/) {
1788: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1789: return;
1790: }
1791: my $response = &get_query_reply($queryid);
1792: my $maxtries = 5;
1793: my $tries = 1;
1794: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1795: $response = &get_query_reply($queryid);
1796: $tries ++;
1797: }
1798:
1799: if (!&error($response) && $response ne 'refused') {
1800: if ($response eq 'unavailable') {
1801: $outcome = $response;
1802: } else {
1803: $outcome = 'ok';
1804: my @matches = split(/\n/,$response);
1805: foreach my $match (@matches) {
1806: my ($key,$value) = split(/=/,$match);
1807: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1808: }
1809: }
1810: }
1811: }
1812: return ($outcome,%results);
1813: }
1814:
1815: sub usersearch {
1816: my ($srch) = @_;
1817: my $dom = $srch->{'srchdomain'};
1818: my %results;
1819: my %libserv = &all_library();
1820: my $query = 'usersearch';
1821: foreach my $tryserver (keys(%libserv)) {
1822: if (&host_domain($tryserver) eq $dom) {
1823: my $host=&hostname($tryserver);
1824: my $queryid=
1825: &reply("querysend:".&escape($query).':'.
1826: &escape($srch->{'srchby'}).':'.
1827: &escape($srch->{'srchtype'}).':'.
1828: &escape($srch->{'srchterm'}),$tryserver);
1829: if ($queryid !~/^\Q$host\E\_/) {
1830: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1831: next;
1832: }
1833: my $reply = &get_query_reply($queryid);
1834: my $maxtries = 1;
1835: my $tries = 1;
1836: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1837: $reply = &get_query_reply($queryid);
1838: $tries ++;
1839: }
1840: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1841: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1842: } else {
1843: my @matches;
1844: if ($reply =~ /\n/) {
1845: @matches = split(/\n/,$reply);
1846: } else {
1847: @matches = split(/\&/,$reply);
1848: }
1849: foreach my $match (@matches) {
1850: my ($uname,$udom,%userhash);
1851: foreach my $entry (split(/:/,$match)) {
1852: my ($key,$value) =
1853: map {&unescape($_);} split(/=/,$entry);
1854: $userhash{$key} = $value;
1855: if ($key eq 'username') {
1856: $uname = $value;
1857: } elsif ($key eq 'domain') {
1858: $udom = $value;
1859: }
1860: }
1861: $results{$uname.':'.$udom} = \%userhash;
1862: }
1863: }
1864: }
1865: }
1866: return %results;
1867: }
1868:
1869: sub get_instuser {
1870: my ($udom,$uname,$id) = @_;
1871: my $homeserver = &domain($udom,'primary');
1872: my ($outcome,%results);
1873: if ($homeserver ne '') {
1874: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1875: &escape($id).':'.&escape($udom),$homeserver);
1876: my $host=&hostname($homeserver);
1877: if ($queryid !~/^\Q$host\E\_/) {
1878: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1879: return;
1880: }
1881: my $response = &get_query_reply($queryid);
1882: my $maxtries = 5;
1883: my $tries = 1;
1884: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1885: $response = &get_query_reply($queryid);
1886: $tries ++;
1887: }
1888: if (!&error($response) && $response ne 'refused') {
1889: if ($response eq 'unavailable') {
1890: $outcome = $response;
1891: } else {
1892: $outcome = 'ok';
1893: my @matches = split(/\n/,$response);
1894: foreach my $match (@matches) {
1895: my ($key,$value) = split(/=/,$match);
1896: $results{&unescape($key)} = &thaw_unescape($value);
1897: }
1898: }
1899: }
1900: }
1901: my %userinfo;
1902: if (ref($results{$uname}) eq 'HASH') {
1903: %userinfo = %{$results{$uname}};
1904: }
1905: return ($outcome,%userinfo);
1906: }
1907:
1908: sub inst_rulecheck {
1909: my ($udom,$uname,$id,$item,$rules) = @_;
1910: my %returnhash;
1911: if ($udom ne '') {
1912: if (ref($rules) eq 'ARRAY') {
1913: @{$rules} = map {&escape($_);} (@{$rules});
1914: my $rulestr = join(':',@{$rules});
1915: my $homeserver=&domain($udom,'primary');
1916: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1917: my $response;
1918: if ($item eq 'username') {
1919: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1920: ':'.&escape($uname).':'.$rulestr,
1921: $homeserver));
1922: } elsif ($item eq 'id') {
1923: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1924: ':'.&escape($id).':'.$rulestr,
1925: $homeserver));
1926: } elsif ($item eq 'selfcreate') {
1927: $response=&unescape(&reply('instselfcreatecheck:'.
1928: &escape($udom).':'.&escape($uname).
1929: ':'.$rulestr,$homeserver));
1930: }
1931: if ($response ne 'refused') {
1932: my @pairs=split(/\&/,$response);
1933: foreach my $item (@pairs) {
1934: my ($key,$value)=split(/=/,$item,2);
1935: $key = &unescape($key);
1936: next if ($key =~ /^error: 2 /);
1937: $returnhash{$key}=&thaw_unescape($value);
1938: }
1939: }
1940: }
1941: }
1942: }
1943: return %returnhash;
1944: }
1945:
1946: sub inst_userrules {
1947: my ($udom,$check) = @_;
1948: my (%ruleshash,@ruleorder);
1949: if ($udom ne '') {
1950: my $homeserver=&domain($udom,'primary');
1951: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1952: my $response;
1953: if ($check eq 'id') {
1954: $response=&reply('instidrules:'.&escape($udom),
1955: $homeserver);
1956: } elsif ($check eq 'email') {
1957: $response=&reply('instemailrules:'.&escape($udom),
1958: $homeserver);
1959: } else {
1960: $response=&reply('instuserrules:'.&escape($udom),
1961: $homeserver);
1962: }
1963: if (($response ne 'refused') && ($response ne 'error') &&
1964: ($response ne 'unknown_cmd') &&
1965: ($response ne 'no_such_host')) {
1966: my ($hashitems,$orderitems) = split(/:/,$response);
1967: my @pairs=split(/\&/,$hashitems);
1968: foreach my $item (@pairs) {
1969: my ($key,$value)=split(/=/,$item,2);
1970: $key = &unescape($key);
1971: next if ($key =~ /^error: 2 /);
1972: $ruleshash{$key}=&thaw_unescape($value);
1973: }
1974: my @esc_order = split(/\&/,$orderitems);
1975: foreach my $item (@esc_order) {
1976: push(@ruleorder,&unescape($item));
1977: }
1978: }
1979: }
1980: }
1981: return (\%ruleshash,\@ruleorder);
1982: }
1983:
1984: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1985:
1986: sub get_domain_defaults {
1987: my ($domain,$ignore_cache) = @_;
1988: my $cachetime = 60*60*24;
1989: unless ($ignore_cache) {
1990: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1991: if (defined($cached)) {
1992: if (ref($result) eq 'HASH') {
1993: return %{$result};
1994: }
1995: }
1996: }
1997: my %domdefaults;
1998: my %domconfig =
1999: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2000: 'requestcourses','inststatus',
2001: 'coursedefaults','usersessions',
2002: 'requestauthor'],$domain);
2003: if (ref($domconfig{'defaults'}) eq 'HASH') {
2004: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2005: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2006: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2007: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2008: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2009: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2010: } else {
2011: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2012: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2013: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2014: }
2015: if (ref($domconfig{'quotas'}) eq 'HASH') {
2016: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2017: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2018: } else {
2019: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2020: }
2021: my @usertools = ('aboutme','blog','webdav','portfolio');
2022: foreach my $item (@usertools) {
2023: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2024: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2025: }
2026: }
2027: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2028: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2029: }
2030: }
2031: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2032: foreach my $item ('official','unofficial','community') {
2033: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2034: }
2035: }
2036: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2037: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2038: }
2039: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2040: foreach my $item ('inststatustypes','inststatusorder') {
2041: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2042: }
2043: }
2044: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2045: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2046: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2047: $domdefaults{'officialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'official'};
2048: $domdefaults{'unofficialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'unofficial'};
2049: }
2050: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2051: $domdefaults{'officialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'official'};
2052: $domdefaults{'unofficialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'unofficial'};
2053: $domdefaults{'communityquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'community'};
2054: }
2055: }
2056: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2057: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2058: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2059: }
2060: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2061: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2062: }
2063: }
2064: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2065: return %domdefaults;
2066: }
2067:
2068: # --------------------------------------------------- Assign a key to a student
2069:
2070: sub assign_access_key {
2071: #
2072: # a valid key looks like uname:udom#comments
2073: # comments are being appended
2074: #
2075: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2076: $kdom=
2077: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2078: $knum=
2079: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2080: $cdom=
2081: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2082: $cnum=
2083: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2084: $udom=$env{'user.name'} unless (defined($udom));
2085: $uname=$env{'user.domain'} unless (defined($uname));
2086: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2087: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2088: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2089: # assigned to this person
2090: # - this should not happen,
2091: # unless something went wrong
2092: # the first time around
2093: # ready to assign
2094: $logentry=$1.'; '.$logentry;
2095: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2096: $kdom,$knum) eq 'ok') {
2097: # key now belongs to user
2098: my $envkey='key.'.$cdom.'_'.$cnum;
2099: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2100: &appenv({'environment.'.$envkey => $ckey});
2101: return 'ok';
2102: } else {
2103: return
2104: 'error: Count not permanently assign key, will need to be re-entered later.';
2105: }
2106: } else {
2107: return 'error: Could not assign key, try again later.';
2108: }
2109: } elsif (!$existing{$ckey}) {
2110: # the key does not exist
2111: return 'error: The key does not exist';
2112: } else {
2113: # the key is somebody else's
2114: return 'error: The key is already in use';
2115: }
2116: }
2117:
2118: # ------------------------------------------ put an additional comment on a key
2119:
2120: sub comment_access_key {
2121: #
2122: # a valid key looks like uname:udom#comments
2123: # comments are being appended
2124: #
2125: my ($ckey,$cdom,$cnum,$logentry)=@_;
2126: $cdom=
2127: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2128: $cnum=
2129: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2130: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2131: if ($existing{$ckey}) {
2132: $existing{$ckey}.='; '.$logentry;
2133: # ready to assign
2134: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2135: $cdom,$cnum) eq 'ok') {
2136: return 'ok';
2137: } else {
2138: return 'error: Count not store comment.';
2139: }
2140: } else {
2141: # the key does not exist
2142: return 'error: The key does not exist';
2143: }
2144: }
2145:
2146: # ------------------------------------------------------ Generate a set of keys
2147:
2148: sub generate_access_keys {
2149: my ($number,$cdom,$cnum,$logentry)=@_;
2150: $cdom=
2151: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2152: $cnum=
2153: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2154: unless (&allowed('mky',$cdom)) { return 0; }
2155: unless (($cdom) && ($cnum)) { return 0; }
2156: if ($number>10000) { return 0; }
2157: sleep(2); # make sure don't get same seed twice
2158: srand(time()^($$+($$<<15))); # from "Programming Perl"
2159: my $total=0;
2160: for (my $i=1;$i<=$number;$i++) {
2161: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2162: sprintf("%lx",int(100000*rand)).'-'.
2163: sprintf("%lx",int(100000*rand));
2164: $newkey=~s/1/g/g; # folks mix up 1 and l
2165: $newkey=~s/0/h/g; # and also 0 and O
2166: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2167: if ($existing{$newkey}) {
2168: $i--;
2169: } else {
2170: if (&put('accesskeys',
2171: { $newkey => '# generated '.localtime().
2172: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2173: '; '.$logentry },
2174: $cdom,$cnum) eq 'ok') {
2175: $total++;
2176: }
2177: }
2178: }
2179: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2180: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2181: return $total;
2182: }
2183:
2184: # ------------------------------------------------------- Validate an accesskey
2185:
2186: sub validate_access_key {
2187: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2188: $cdom=
2189: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2190: $cnum=
2191: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2192: $udom=$env{'user.domain'} unless (defined($udom));
2193: $uname=$env{'user.name'} unless (defined($uname));
2194: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2195: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2196: }
2197:
2198: # ------------------------------------- Find the section of student in a course
2199: sub devalidate_getsection_cache {
2200: my ($udom,$unam,$courseid)=@_;
2201: my $hashid="$udom:$unam:$courseid";
2202: &devalidate_cache_new('getsection',$hashid);
2203: }
2204:
2205: sub courseid_to_courseurl {
2206: my ($courseid) = @_;
2207: #already url style courseid
2208: return $courseid if ($courseid =~ m{^/});
2209:
2210: if (exists($env{'course.'.$courseid.'.num'})) {
2211: my $cnum = $env{'course.'.$courseid.'.num'};
2212: my $cdom = $env{'course.'.$courseid.'.domain'};
2213: return "/$cdom/$cnum";
2214: }
2215:
2216: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2217: if (exists($courseinfo{'num'})) {
2218: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2219: }
2220:
2221: return undef;
2222: }
2223:
2224: sub getsection {
2225: my ($udom,$unam,$courseid)=@_;
2226: my $cachetime=1800;
2227:
2228: my $hashid="$udom:$unam:$courseid";
2229: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2230: if (defined($cached)) { return $result; }
2231:
2232: my %Pending;
2233: my %Expired;
2234: #
2235: # Each role can either have not started yet (pending), be active,
2236: # or have expired.
2237: #
2238: # If there is an active role, we are done.
2239: #
2240: # If there is more than one role which has not started yet,
2241: # choose the one which will start sooner
2242: # If there is one role which has not started yet, return it.
2243: #
2244: # If there is more than one expired role, choose the one which ended last.
2245: # If there is a role which has expired, return it.
2246: #
2247: $courseid = &courseid_to_courseurl($courseid);
2248: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2249: foreach my $key (keys(%roleshash)) {
2250: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2251: my $section=$1;
2252: if ($key eq $courseid.'_st') { $section=''; }
2253: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2254: my $now=time;
2255: if (defined($end) && $end && ($now > $end)) {
2256: $Expired{$end}=$section;
2257: next;
2258: }
2259: if (defined($start) && $start && ($now < $start)) {
2260: $Pending{$start}=$section;
2261: next;
2262: }
2263: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2264: }
2265: #
2266: # Presumedly there will be few matching roles from the above
2267: # loop and the sorting time will be negligible.
2268: if (scalar(keys(%Pending))) {
2269: my ($time) = sort {$a <=> $b} keys(%Pending);
2270: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2271: }
2272: if (scalar(keys(%Expired))) {
2273: my @sorted = sort {$a <=> $b} keys(%Expired);
2274: my $time = pop(@sorted);
2275: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2276: }
2277: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2278: }
2279:
2280: sub save_cache {
2281: &purge_remembered();
2282: #&Apache::loncommon::validate_page();
2283: undef(%env);
2284: undef($env_loaded);
2285: }
2286:
2287: my $to_remember=-1;
2288: my %remembered;
2289: my %accessed;
2290: my $kicks=0;
2291: my $hits=0;
2292: sub make_key {
2293: my ($name,$id) = @_;
2294: if (length($id) > 65
2295: && length(&escape($id)) > 200) {
2296: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2297: }
2298: return &escape($name.':'.$id);
2299: }
2300:
2301: sub devalidate_cache_new {
2302: my ($name,$id,$debug) = @_;
2303: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2304: $id=&make_key($name,$id);
2305: $memcache->delete($id);
2306: delete($remembered{$id});
2307: delete($accessed{$id});
2308: }
2309:
2310: sub is_cached_new {
2311: my ($name,$id,$debug) = @_;
2312: $id=&make_key($name,$id);
2313: if (exists($remembered{$id})) {
2314: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2315: $accessed{$id}=[&gettimeofday()];
2316: $hits++;
2317: return ($remembered{$id},1);
2318: }
2319: my $value = $memcache->get($id);
2320: if (!(defined($value))) {
2321: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2322: return (undef,undef);
2323: }
2324: if ($value eq '__undef__') {
2325: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2326: $value=undef;
2327: }
2328: &make_room($id,$value,$debug);
2329: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2330: return ($value,1);
2331: }
2332:
2333: sub do_cache_new {
2334: my ($name,$id,$value,$time,$debug) = @_;
2335: $id=&make_key($name,$id);
2336: my $setvalue=$value;
2337: if (!defined($setvalue)) {
2338: $setvalue='__undef__';
2339: }
2340: if (!defined($time) ) {
2341: $time=600;
2342: }
2343: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2344: my $result = $memcache->set($id,$setvalue,$time);
2345: if (! $result) {
2346: &logthis("caching of id -> $id failed");
2347: $memcache->disconnect_all();
2348: }
2349: # need to make a copy of $value
2350: &make_room($id,$value,$debug);
2351: return $value;
2352: }
2353:
2354: sub make_room {
2355: my ($id,$value,$debug)=@_;
2356:
2357: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2358: : $value;
2359: if ($to_remember<0) { return; }
2360: $accessed{$id}=[&gettimeofday()];
2361: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2362: my $to_kick;
2363: my $max_time=0;
2364: foreach my $other (keys(%accessed)) {
2365: if (&tv_interval($accessed{$other}) > $max_time) {
2366: $to_kick=$other;
2367: $max_time=&tv_interval($accessed{$other});
2368: }
2369: }
2370: delete($remembered{$to_kick});
2371: delete($accessed{$to_kick});
2372: $kicks++;
2373: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2374: return;
2375: }
2376:
2377: sub purge_remembered {
2378: #&logthis("Tossing ".scalar(keys(%remembered)));
2379: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2380: undef(%remembered);
2381: undef(%accessed);
2382: }
2383: # ------------------------------------- Read an entry from a user's environment
2384:
2385: sub userenvironment {
2386: my ($udom,$unam,@what)=@_;
2387: my $items;
2388: foreach my $item (@what) {
2389: $items.=&escape($item).'&';
2390: }
2391: $items=~s/\&$//;
2392: my %returnhash=();
2393: my $uhome = &homeserver($unam,$udom);
2394: unless ($uhome eq 'no_host') {
2395: my @answer=split(/\&/,
2396: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2397: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2398: return %returnhash;
2399: }
2400: my $i;
2401: for ($i=0;$i<=$#what;$i++) {
2402: $returnhash{$what[$i]}=&unescape($answer[$i]);
2403: }
2404: }
2405: return %returnhash;
2406: }
2407:
2408: # ---------------------------------------------------------- Get a studentphoto
2409: sub studentphoto {
2410: my ($udom,$unam,$ext) = @_;
2411: my $home=&Apache::lonnet::homeserver($unam,$udom);
2412: if (defined($env{'request.course.id'})) {
2413: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2414: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2415: return(&retrievestudentphoto($udom,$unam,$ext));
2416: } else {
2417: my ($result,$perm_reqd)=
2418: &Apache::lonnet::auto_photo_permission($unam,$udom);
2419: if ($result eq 'ok') {
2420: if (!($perm_reqd eq 'yes')) {
2421: return(&retrievestudentphoto($udom,$unam,$ext));
2422: }
2423: }
2424: }
2425: }
2426: } else {
2427: my ($result,$perm_reqd) =
2428: &Apache::lonnet::auto_photo_permission($unam,$udom);
2429: if ($result eq 'ok') {
2430: if (!($perm_reqd eq 'yes')) {
2431: return(&retrievestudentphoto($udom,$unam,$ext));
2432: }
2433: }
2434: }
2435: return '/adm/lonKaputt/lonlogo_broken.gif';
2436: }
2437:
2438: sub retrievestudentphoto {
2439: my ($udom,$unam,$ext,$type) = @_;
2440: my $home=&Apache::lonnet::homeserver($unam,$udom);
2441: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2442: if ($ret eq 'ok') {
2443: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2444: if ($type eq 'thumbnail') {
2445: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2446: }
2447: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2448: return $tokenurl;
2449: } else {
2450: if ($type eq 'thumbnail') {
2451: return '/adm/lonKaputt/genericstudent_tn.gif';
2452: } else {
2453: return '/adm/lonKaputt/lonlogo_broken.gif';
2454: }
2455: }
2456: }
2457:
2458: # -------------------------------------------------------------------- New chat
2459:
2460: sub chatsend {
2461: my ($newentry,$anon,$group)=@_;
2462: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2463: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2464: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2465: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2466: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2467: &escape($newentry)).':'.$group,$chome);
2468: }
2469:
2470: # ------------------------------------------ Find current version of a resource
2471:
2472: sub getversion {
2473: my $fname=&clutter(shift);
2474: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2475: return ¤tversion(&filelocation('',$fname));
2476: }
2477:
2478: sub currentversion {
2479: my $fname=shift;
2480: my $author=$fname;
2481: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2482: my ($udom,$uname)=split(/\//,$author);
2483: my $home=&homeserver($uname,$udom);
2484: if ($home eq 'no_host') {
2485: return -1;
2486: }
2487: my $answer=&reply("currentversion:$fname",$home);
2488: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2489: return -1;
2490: }
2491: return $answer;
2492: }
2493:
2494: #
2495: # Return special version number of resource if set by override, empty otherwise
2496: #
2497: sub usedversion {
2498: my $fname=shift;
2499: unless ($fname) { $fname=$env{'request.uri'}; }
2500: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2501: if ($urlversion) { return $urlversion; }
2502: return '';
2503: }
2504:
2505: # ----------------------------- Subscribe to a resource, return URL if possible
2506:
2507: sub subscribe {
2508: my $fname=shift;
2509: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2510: $fname=~s/[\n\r]//g;
2511: my $author=$fname;
2512: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2513: my ($udom,$uname)=split(/\//,$author);
2514: my $home=homeserver($uname,$udom);
2515: if ($home eq 'no_host') {
2516: return 'not_found';
2517: }
2518: my $answer=reply("sub:$fname",$home);
2519: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2520: $answer.=' by '.$home;
2521: }
2522: return $answer;
2523: }
2524:
2525: # -------------------------------------------------------------- Replicate file
2526:
2527: sub repcopy {
2528: my $filename=shift;
2529: $filename=~s/\/+/\//g;
2530: my $londocroot = $perlvar{'lonDocRoot'};
2531: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2532: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2533: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2534: $filename=~m{^/*(uploaded|editupload)/}) {
2535: return &repcopy_userfile($filename);
2536: }
2537: $filename=~s/[\n\r]//g;
2538: my $transname="$filename.in.transfer";
2539: # FIXME: this should flock
2540: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2541: my $remoteurl=subscribe($filename);
2542: if ($remoteurl =~ /^con_lost by/) {
2543: &logthis("Subscribe returned $remoteurl: $filename");
2544: return 'unavailable';
2545: } elsif ($remoteurl eq 'not_found') {
2546: #&logthis("Subscribe returned not_found: $filename");
2547: return 'not_found';
2548: } elsif ($remoteurl =~ /^rejected by/) {
2549: &logthis("Subscribe returned $remoteurl: $filename");
2550: return 'forbidden';
2551: } elsif ($remoteurl eq 'directory') {
2552: return 'ok';
2553: } else {
2554: my $author=$filename;
2555: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2556: my ($udom,$uname)=split(/\//,$author);
2557: my $home=homeserver($uname,$udom);
2558: unless ($home eq $perlvar{'lonHostID'}) {
2559: my @parts=split(/\//,$filename);
2560: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2561: if ($path ne "$londocroot/res") {
2562: &logthis("Malconfiguration for replication: $filename");
2563: return 'bad_request';
2564: }
2565: my $count;
2566: for ($count=5;$count<$#parts;$count++) {
2567: $path.="/$parts[$count]";
2568: if ((-e $path)!=1) {
2569: mkdir($path,0777);
2570: }
2571: }
2572: my $ua=new LWP::UserAgent;
2573: my $request=new HTTP::Request('GET',"$remoteurl");
2574: my $response=$ua->request($request,$transname);
2575: if ($response->is_error()) {
2576: unlink($transname);
2577: my $message=$response->status_line;
2578: &logthis("<font color=\"blue\">WARNING:"
2579: ." LWP get: $message: $filename</font>");
2580: return 'unavailable';
2581: } else {
2582: if ($remoteurl!~/\.meta$/) {
2583: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2584: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2585: if ($mresponse->is_error()) {
2586: unlink($filename.'.meta');
2587: &logthis(
2588: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2589: }
2590: }
2591: rename($transname,$filename);
2592: return 'ok';
2593: }
2594: }
2595: }
2596: }
2597:
2598: # ------------------------------------------------ Get server side include body
2599: sub ssi_body {
2600: my ($filelink,%form)=@_;
2601: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2602: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2603: }
2604: my $output='';
2605: my $response;
2606: if ($filelink=~/^https?\:/) {
2607: ($output,$response)=&externalssi($filelink);
2608: } else {
2609: $filelink .= $filelink=~/\?/ ? '&' : '?';
2610: $filelink .= 'inhibitmenu=yes';
2611: ($output,$response)=&ssi($filelink,%form);
2612: }
2613: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2614: $output=~s/^.*?\<body[^\>]*\>//si;
2615: $output=~s/\<\/body\s*\>.*?$//si;
2616: if (wantarray) {
2617: return ($output, $response);
2618: } else {
2619: return $output;
2620: }
2621: }
2622:
2623: # --------------------------------------------------------- Server Side Include
2624:
2625: sub absolute_url {
2626: my ($host_name) = @_;
2627: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2628: if ($host_name eq '') {
2629: $host_name = $ENV{'SERVER_NAME'};
2630: }
2631: return $protocol.$host_name;
2632: }
2633:
2634: #
2635: # Server side include.
2636: # Parameters:
2637: # fn Possibly encrypted resource name/id.
2638: # form Hash that describes how the rendering should be done
2639: # and other things.
2640: # Returns:
2641: # Scalar context: The content of the response.
2642: # Array context: 2 element list of the content and the full response object.
2643: #
2644: sub ssi {
2645:
2646: my ($fn,%form)=@_;
2647: my $ua=new LWP::UserAgent;
2648: my $request;
2649:
2650: $form{'no_update_last_known'}=1;
2651: &Apache::lonenc::check_encrypt(\$fn);
2652: if (%form) {
2653: $request=new HTTP::Request('POST',&absolute_url().$fn);
2654: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2655: } else {
2656: $request=new HTTP::Request('GET',&absolute_url().$fn);
2657: }
2658:
2659: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2660: my $response= $ua->request($request);
2661: my $content = $response->content;
2662:
2663:
2664: if (wantarray) {
2665: return ($content, $response);
2666: } else {
2667: return $content;
2668: }
2669: }
2670:
2671: sub externalssi {
2672: my ($url)=@_;
2673: my $ua=new LWP::UserAgent;
2674: my $request=new HTTP::Request('GET',$url);
2675: my $response=$ua->request($request);
2676: if (wantarray) {
2677: return ($response->content, $response);
2678: } else {
2679: return $response->content;
2680: }
2681: }
2682:
2683: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2684:
2685: sub allowuploaded {
2686: my ($srcurl,$url)=@_;
2687: $url=&clutter(&declutter($url));
2688: my $dir=$url;
2689: $dir=~s/\/[^\/]+$//;
2690: my %httpref=();
2691: my $httpurl=&hreflocation('',$url);
2692: $httpref{'httpref.'.$httpurl}=$srcurl;
2693: &Apache::lonnet::appenv(\%httpref);
2694: }
2695:
2696: #
2697: # Determine if the current user should be able to edit a particular resource,
2698: # when viewing in course context.
2699: # (a) When viewing resource used to determine if "Edit" item is included in
2700: # Functions.
2701: # (b) When displaying folder contents in course editor, used to determine if
2702: # "Edit" link will be displayed alongside resource.
2703: #
2704: # input: six args -- filename (decluttered), course number, course domain,
2705: # url, symb (if registered) and group (if this is a group
2706: # item -- e.g., bulletin board, group page etc.).
2707: # output: array of five scalars --
2708: # $cfile -- url for file editing if editable on current server
2709: # $home -- homeserver of resource (i.e., for author if published,
2710: # or course if uploaded.).
2711: # $switchserver -- 1 if server switch will be needed.
2712: # $forceedit -- 1 if icon/link should be to go to edit mode
2713: # $forceview -- 1 if icon/link should be to go to view mode
2714: #
2715:
2716: sub can_edit_resource {
2717: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2718: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2719: #
2720: # For aboutme pages user can only edit his/her own.
2721: #
2722: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2723: my ($sdom,$sname) = ($1,$2);
2724: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2725: $home = $env{'user.home'};
2726: $cfile = $resurl;
2727: if ($env{'form.forceedit'}) {
2728: $forceview = 1;
2729: } else {
2730: $forceedit = 1;
2731: }
2732: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2733: } else {
2734: return;
2735: }
2736: }
2737:
2738: if ($env{'request.course.id'}) {
2739: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2740: if ($group ne '') {
2741: # if this is a group homepage or group bulletin board, check group privs
2742: my $allowed = 0;
2743: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2744: if ((&allowed('mdg',$env{'request.course.id'}.
2745: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2746: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2747: $allowed = 1;
2748: }
2749: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2750: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2751: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2752: $allowed = 1;
2753: }
2754: }
2755: if ($allowed) {
2756: $home=&homeserver($cnum,$cdom);
2757: if ($env{'form.forceedit'}) {
2758: $forceview = 1;
2759: } else {
2760: $forceedit = 1;
2761: }
2762: $cfile = $resurl;
2763: } else {
2764: return;
2765: }
2766: } else {
2767: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2768: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2769: return;
2770: }
2771: } elsif (!$crsedit) {
2772: #
2773: # No edit allowed where CC has switched to student role.
2774: #
2775: return;
2776: }
2777: }
2778: }
2779:
2780: if ($file ne '') {
2781: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2782: if (&is_course_upload($file,$cnum,$cdom)) {
2783: $uploaded = 1;
2784: $incourse = 1;
2785: if ($file =~/\.(htm|html|css|js|txt)$/) {
2786: $cfile = &hreflocation('',$file);
2787: if ($env{'form.forceedit'}) {
2788: $forceview = 1;
2789: } else {
2790: $forceedit = 1;
2791: }
2792: }
2793: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2794: $incourse = 1;
2795: if ($env{'form.forceedit'}) {
2796: $forceview = 1;
2797: } else {
2798: $forceedit = 1;
2799: }
2800: $cfile = $resurl;
2801: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2802: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2803: $incourse = 1;
2804: if ($env{'form.forceedit'}) {
2805: $forceview = 1;
2806: } else {
2807: $forceedit = 1;
2808: }
2809: $cfile = $resurl;
2810: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2811: $incourse = 1;
2812: $cfile = $resurl.'/smpedit';
2813: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2814: $incourse = 1;
2815: if ($env{'form.forceedit'}) {
2816: $forceview = 1;
2817: } else {
2818: $forceedit = 1;
2819: }
2820: $cfile = $resurl;
2821: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2822: $incourse = 1;
2823: if ($env{'form.forceedit'}) {
2824: $forceview = 1;
2825: } else {
2826: $forceedit = 1;
2827: }
2828: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2829: }
2830: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2831: my $template = '/res/lib/templates/simpleproblem.problem';
2832: if (&is_on_map($template)) {
2833: $incourse = 1;
2834: $forceview = 1;
2835: $cfile = $template;
2836: }
2837: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2838: $incourse = 1;
2839: if ($env{'form.forceedit'}) {
2840: $forceview = 1;
2841: } else {
2842: $forceedit = 1;
2843: }
2844: $cfile = $resurl;
2845: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2846: $incourse = 1;
2847: $forceview = 1;
2848: if ($symb) {
2849: my ($map,$id,$res)=&decode_symb($symb);
2850: $env{'request.symb'} = $symb;
2851: $cfile = &clutter($res);
2852: } else {
2853: $cfile = $env{'form.suppurl'};
2854: $cfile =~ s{^http://}{};
2855: $cfile = '/adm/wrapper/ext/'.$cfile;
2856: }
2857: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2858: if ($env{'form.forceedit'}) {
2859: $forceview = 1;
2860: } else {
2861: $forceedit = 1;
2862: }
2863: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2864: }
2865: }
2866: if ($uploaded || $incourse) {
2867: $home=&homeserver($cnum,$cdom);
2868: } elsif ($file !~ m{/$}) {
2869: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2870: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2871: # Check that the user has permission to edit this resource
2872: my $setpriv = 1;
2873: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2874: if (defined($cfudom)) {
2875: $home=&homeserver($cfuname,$cfudom);
2876: $cfile=$file;
2877: }
2878: }
2879: if (($cfile ne '') && (!$incourse || $uploaded) &&
2880: (($home ne '') && ($home ne 'no_host'))) {
2881: my @ids=¤t_machine_ids();
2882: unless (grep(/^\Q$home\E$/,@ids)) {
2883: $switchserver=1;
2884: }
2885: }
2886: }
2887: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2888: }
2889:
2890: sub is_course_upload {
2891: my ($file,$cnum,$cdom) = @_;
2892: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2893: $uploadpath =~ s{^\/}{};
2894: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
2895: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
2896: return 1;
2897: }
2898: return;
2899: }
2900:
2901: sub in_course {
2902: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2903: if ($hideprivileged) {
2904: my $skipuser;
2905: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2906: my @possdoms = ($cdom);
2907: if ($coursehash{'checkforpriv'}) {
2908: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
2909: }
2910: if (&privileged($uname,$udom,\@possdoms)) {
2911: $skipuser = 1;
2912: if ($coursehash{'nothideprivileged'}) {
2913: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2914: my $user;
2915: if ($item =~ /:/) {
2916: $user = $item;
2917: } else {
2918: $user = join(':',split(/[\@]/,$item));
2919: }
2920: if ($user eq $uname.':'.$udom) {
2921: undef($skipuser);
2922: last;
2923: }
2924: }
2925: }
2926: if ($skipuser) {
2927: return 0;
2928: }
2929: }
2930: }
2931: $type ||= 'any';
2932: if (!defined($cdom) || !defined($cnum)) {
2933: my $cid = $env{'request.course.id'};
2934: $cdom = $env{'course.'.$cid.'.domain'};
2935: $cnum = $env{'course.'.$cid.'.num'};
2936: }
2937: my $typesref;
2938: if (($type eq 'any') || ($type eq 'all')) {
2939: $typesref = ['active','previous','future'];
2940: } elsif ($type eq 'previous' || $type eq 'future') {
2941: $typesref = [$type];
2942: }
2943: my %roles = &get_my_roles($uname,$udom,'userroles',
2944: $typesref,undef,[$cdom]);
2945: my ($tmp) = keys(%roles);
2946: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2947: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2948: if (@course_roles > 0) {
2949: return 1;
2950: }
2951: return 0;
2952: }
2953:
2954: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2955: # input: action, courseID, current domain, intended
2956: # path to file, source of file, instruction to parse file for objects,
2957: # ref to hash for embedded objects,
2958: # ref to hash for codebase of java objects.
2959: # reference to scalar to accommodate mime type determined
2960: # from File::MMagic if $parser = parse.
2961: #
2962: # output: url to file (if action was uploaddoc),
2963: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2964: #
2965: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2966: # course.
2967: #
2968: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2969: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2970: # course's home server.
2971: #
2972: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2973: # be copied from $source (current location) to
2974: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2975: # and will then be copied to
2976: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2977: # course's home server.
2978: #
2979: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2980: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2981: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2982: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2983: # in course's home server.
2984: #
2985:
2986: sub process_coursefile {
2987: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2988: $mimetype)=@_;
2989: my $fetchresult;
2990: my $home=&homeserver($docuname,$docudom);
2991: if ($action eq 'propagate') {
2992: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2993: $home);
2994: } else {
2995: my $fpath = '';
2996: my $fname = $file;
2997: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2998: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2999: my $filepath = &build_filepath($fpath);
3000: if ($action eq 'copy') {
3001: if ($source eq '') {
3002: $fetchresult = 'no source file';
3003: return $fetchresult;
3004: } else {
3005: my $destination = $filepath.'/'.$fname;
3006: rename($source,$destination);
3007: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3008: $home);
3009: }
3010: } elsif ($action eq 'uploaddoc') {
3011: open(my $fh,'>'.$filepath.'/'.$fname);
3012: print $fh $env{'form.'.$source};
3013: close($fh);
3014: if ($parser eq 'parse') {
3015: my $mm = new File::MMagic;
3016: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3017: if ($type eq 'text/html') {
3018: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3019: unless ($parse_result eq 'ok') {
3020: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3021: }
3022: }
3023: if (ref($mimetype)) {
3024: $$mimetype = $type;
3025: }
3026: }
3027: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3028: $home);
3029: if ($fetchresult eq 'ok') {
3030: return '/uploaded/'.$fpath.'/'.$fname;
3031: } else {
3032: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3033: ' to host '.$home.': '.$fetchresult);
3034: return '/adm/notfound.html';
3035: }
3036: }
3037: }
3038: unless ( $fetchresult eq 'ok') {
3039: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3040: ' to host '.$home.': '.$fetchresult);
3041: }
3042: return $fetchresult;
3043: }
3044:
3045: sub build_filepath {
3046: my ($fpath) = @_;
3047: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3048: unless ($fpath eq '') {
3049: my @parts=split('/',$fpath);
3050: foreach my $part (@parts) {
3051: $filepath.= '/'.$part;
3052: if ((-e $filepath)!=1) {
3053: mkdir($filepath,0777);
3054: }
3055: }
3056: }
3057: return $filepath;
3058: }
3059:
3060: sub store_edited_file {
3061: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3062: my $file = $primary_url;
3063: $file =~ s#^/uploaded/$docudom/$docuname/##;
3064: my $fpath = '';
3065: my $fname = $file;
3066: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3067: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3068: my $filepath = &build_filepath($fpath);
3069: open(my $fh,'>'.$filepath.'/'.$fname);
3070: print $fh $content;
3071: close($fh);
3072: my $home=&homeserver($docuname,$docudom);
3073: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3074: $home);
3075: if ($$fetchresult eq 'ok') {
3076: return '/uploaded/'.$fpath.'/'.$fname;
3077: } else {
3078: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3079: ' to host '.$home.': '.$$fetchresult);
3080: return '/adm/notfound.html';
3081: }
3082: }
3083:
3084: sub clean_filename {
3085: my ($fname,$args)=@_;
3086: # Replace Windows backslashes by forward slashes
3087: $fname=~s/\\/\//g;
3088: if (!$args->{'keep_path'}) {
3089: # Get rid of everything but the actual filename
3090: $fname=~s/^.*\/([^\/]+)$/$1/;
3091: }
3092: # Replace spaces by underscores
3093: $fname=~s/\s+/\_/g;
3094: # Replace all other weird characters by nothing
3095: $fname=~s{[^/\w\.\-]}{}g;
3096: # Replace all .\d. sequences with _\d. so they no longer look like version
3097: # numbers
3098: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3099: return $fname;
3100: }
3101: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3102: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3103: # image with the same aspect ratio as the original, but with dimensions which do
3104: # not exceed $resizewidth and $resizeheight.
3105:
3106: sub resizeImage {
3107: my ($img_path,$resizewidth,$resizeheight) = @_;
3108: my $ima = Image::Magick->new;
3109: my $resized;
3110: if (-e $img_path) {
3111: $ima->Read($img_path);
3112: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3113: my $width = $ima->Get('width');
3114: my $height = $ima->Get('height');
3115: if ($width > $resizewidth) {
3116: my $factor = $width/$resizewidth;
3117: my $newheight = $height/$factor;
3118: $ima->Scale(width=>$resizewidth,height=>$newheight);
3119: $resized = 1;
3120: }
3121: }
3122: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3123: my $width = $ima->Get('width');
3124: my $height = $ima->Get('height');
3125: if ($height > $resizeheight) {
3126: my $factor = $height/$resizeheight;
3127: my $newwidth = $width/$factor;
3128: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3129: $resized = 1;
3130: }
3131: }
3132: if ($resized) {
3133: $ima->Write($img_path);
3134: }
3135: }
3136: return;
3137: }
3138:
3139: # --------------- Take an uploaded file and put it into the userfiles directory
3140: # input: $formname - the contents of the file are in $env{"form.$formname"}
3141: # the desired filename is in $env{"form.$formname.filename"}
3142: # $context - possible values: coursedoc, existingfile, overwrite,
3143: # canceloverwrite, or ''.
3144: # if 'coursedoc': upload to the current course
3145: # if 'existingfile': write file to tmp/overwrites directory
3146: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3147: # $context is passed as argument to &finishuserfileupload
3148: # $subdir - directory in userfile to store the file into
3149: # $parser - instruction to parse file for objects ($parser = parse)
3150: # $allfiles - reference to hash for embedded objects
3151: # $codebase - reference to hash for codebase of java objects
3152: # $desuname - username for permanent storage of uploaded file
3153: # $dsetudom - domain for permanaent storage of uploaded file
3154: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3155: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3156: # $resizewidth - width (pixels) to which to resize uploaded image
3157: # $resizeheight - height (pixels) to which to resize uploaded image
3158: # $mimetype - reference to scalar to accommodate mime type determined
3159: # from File::MMagic.
3160: #
3161: # output: url of file in userspace, or error: <message>
3162: # or /adm/notfound.html if failure to upload occurse
3163:
3164: sub userfileupload {
3165: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3166: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3167: if (!defined($subdir)) { $subdir='unknown'; }
3168: my $fname=$env{'form.'.$formname.'.filename'};
3169: $fname=&clean_filename($fname);
3170: # See if there is anything left
3171: unless ($fname) { return 'error: no uploaded file'; }
3172: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3173: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3174: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3175: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3176: my $now = time;
3177: my $filepath;
3178: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3179: $filepath = 'tmp/helprequests/'.$now;
3180: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3181: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3182: '_'.$env{'user.domain'}.'/pending';
3183: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3184: my ($docuname,$docudom);
3185: if ($destudom) {
3186: $docudom = $destudom;
3187: } else {
3188: $docudom = $env{'user.domain'};
3189: }
3190: if ($destuname) {
3191: $docuname = $destuname;
3192: } else {
3193: $docuname = $env{'user.name'};
3194: }
3195: if (exists($env{'form.group'})) {
3196: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3197: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3198: }
3199: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3200: if ($context eq 'canceloverwrite') {
3201: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3202: if (-e $tempfile) {
3203: my @info = stat($tempfile);
3204: if ($info[9] eq $env{'form.timestamp'}) {
3205: unlink($tempfile);
3206: }
3207: }
3208: return;
3209: }
3210: }
3211: # Create the directory if not present
3212: my @parts=split(/\//,$filepath);
3213: my $fullpath = $perlvar{'lonDaemons'};
3214: for (my $i=0;$i<@parts;$i++) {
3215: $fullpath .= '/'.$parts[$i];
3216: if ((-e $fullpath)!=1) {
3217: mkdir($fullpath,0777);
3218: }
3219: }
3220: open(my $fh,'>'.$fullpath.'/'.$fname);
3221: print $fh $env{'form.'.$formname};
3222: close($fh);
3223: if ($context eq 'existingfile') {
3224: my @info = stat($fullpath.'/'.$fname);
3225: return ($fullpath.'/'.$fname,$info[9]);
3226: } else {
3227: return $fullpath.'/'.$fname;
3228: }
3229: }
3230: if ($subdir eq 'scantron') {
3231: $fname = 'scantron_orig_'.$fname;
3232: } else {
3233: $fname="$subdir/$fname";
3234: }
3235: if ($context eq 'coursedoc') {
3236: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3237: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3238: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3239: return &finishuserfileupload($docuname,$docudom,
3240: $formname,$fname,$parser,$allfiles,
3241: $codebase,$thumbwidth,$thumbheight,
3242: $resizewidth,$resizeheight,$context,$mimetype);
3243: } else {
3244: if ($env{'form.folder'}) {
3245: $fname=$env{'form.folder'}.'/'.$fname;
3246: }
3247: return &process_coursefile('uploaddoc',$docuname,$docudom,
3248: $fname,$formname,$parser,
3249: $allfiles,$codebase,$mimetype);
3250: }
3251: } elsif (defined($destuname)) {
3252: my $docuname=$destuname;
3253: my $docudom=$destudom;
3254: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3255: $parser,$allfiles,$codebase,
3256: $thumbwidth,$thumbheight,
3257: $resizewidth,$resizeheight,$context,$mimetype);
3258: } else {
3259: my $docuname=$env{'user.name'};
3260: my $docudom=$env{'user.domain'};
3261: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3262: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3263: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3264: }
3265: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3266: $parser,$allfiles,$codebase,
3267: $thumbwidth,$thumbheight,
3268: $resizewidth,$resizeheight,$context,$mimetype);
3269: }
3270: }
3271:
3272: sub finishuserfileupload {
3273: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3274: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3275: my $path=$docudom.'/'.$docuname.'/';
3276: my $filepath=$perlvar{'lonDocRoot'};
3277:
3278: my ($fnamepath,$file,$fetchthumb);
3279: $file=$fname;
3280: if ($fname=~m|/|) {
3281: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3282: $path.=$fnamepath.'/';
3283: }
3284: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3285: my $count;
3286: for ($count=4;$count<=$#parts;$count++) {
3287: $filepath.="/$parts[$count]";
3288: if ((-e $filepath)!=1) {
3289: mkdir($filepath,0777);
3290: }
3291: }
3292:
3293: # Save the file
3294: {
3295: if (!open(FH,'>'.$filepath.'/'.$file)) {
3296: &logthis('Failed to create '.$filepath.'/'.$file);
3297: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3298: return '/adm/notfound.html';
3299: }
3300: if ($context eq 'overwrite') {
3301: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3302: my $target = $filepath.'/'.$file;
3303: if (-e $source) {
3304: my @info = stat($source);
3305: if ($info[9] eq $env{'form.timestamp'}) {
3306: unless (&File::Copy::move($source,$target)) {
3307: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3308: return "Moving from $source failed";
3309: }
3310: } else {
3311: return "Temporary file: $source had unexpected date/time for last modification";
3312: }
3313: } else {
3314: return "Temporary file: $source missing";
3315: }
3316: } elsif (!print FH ($env{'form.'.$formname})) {
3317: &logthis('Failed to write to '.$filepath.'/'.$file);
3318: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3319: return '/adm/notfound.html';
3320: }
3321: close(FH);
3322: if ($resizewidth && $resizeheight) {
3323: my $mm = new File::MMagic;
3324: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3325: if ($mime_type =~ m{^image/}) {
3326: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3327: }
3328: }
3329: }
3330: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3331: if (ref($mimetype)) {
3332: if ($$mimetype eq '') {
3333: my $mm = new File::MMagic;
3334: my $type = $mm->checktype_filename($filepath.'/'.$file);
3335: $$mimetype = $type;
3336: }
3337: }
3338: }
3339: if ($parser eq 'parse') {
3340: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3341: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3342: $allfiles,$codebase);
3343: unless ($parse_result eq 'ok') {
3344: &logthis('Failed to parse '.$filepath.$file.
3345: ' for embedded media: '.$parse_result);
3346: }
3347: }
3348: }
3349: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3350: my $input = $filepath.'/'.$file;
3351: my $output = $filepath.'/'.'tn-'.$file;
3352: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3353: system("convert -sample $thumbsize $input $output");
3354: if (-e $filepath.'/'.'tn-'.$file) {
3355: $fetchthumb = 1;
3356: }
3357: }
3358:
3359: # Notify homeserver to grep it
3360: #
3361: my $docuhome=&homeserver($docuname,$docudom);
3362: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3363: if ($fetchresult eq 'ok') {
3364: if ($fetchthumb) {
3365: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3366: if ($thumbresult ne 'ok') {
3367: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3368: $docuhome.': '.$thumbresult);
3369: }
3370: }
3371: #
3372: # Return the URL to it
3373: return '/uploaded/'.$path.$file;
3374: } else {
3375: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3376: ': '.$fetchresult);
3377: return '/adm/notfound.html';
3378: }
3379: }
3380:
3381: sub extract_embedded_items {
3382: my ($fullpath,$allfiles,$codebase,$content) = @_;
3383: my @state = ();
3384: my (%lastids,%related,%shockwave,%flashvars);
3385: my %javafiles = (
3386: codebase => '',
3387: code => '',
3388: archive => ''
3389: );
3390: my %mediafiles = (
3391: src => '',
3392: movie => '',
3393: );
3394: my $p;
3395: if ($content) {
3396: $p = HTML::LCParser->new($content);
3397: } else {
3398: $p = HTML::LCParser->new($fullpath);
3399: }
3400: while (my $t=$p->get_token()) {
3401: if ($t->[0] eq 'S') {
3402: my ($tagname, $attr) = ($t->[1],$t->[2]);
3403: push(@state, $tagname);
3404: if (lc($tagname) eq 'allow') {
3405: &add_filetype($allfiles,$attr->{'src'},'src');
3406: }
3407: if (lc($tagname) eq 'img') {
3408: &add_filetype($allfiles,$attr->{'src'},'src');
3409: }
3410: if (lc($tagname) eq 'a') {
3411: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3412: &add_filetype($allfiles,$attr->{'href'},'href');
3413: }
3414: }
3415: if (lc($tagname) eq 'script') {
3416: my $src;
3417: if ($attr->{'archive'} =~ /\.jar$/i) {
3418: &add_filetype($allfiles,$attr->{'archive'},'archive');
3419: } else {
3420: if ($attr->{'src'} ne '') {
3421: $src = $attr->{'src'};
3422: &add_filetype($allfiles,$src,'src');
3423: }
3424: }
3425: my $text = $p->get_trimmed_text();
3426: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3427: my @swfargs = split(/,/,$1);
3428: foreach my $item (@swfargs) {
3429: $item =~ s/["']//g;
3430: $item =~ s/^\s+//;
3431: $item =~ s/\s+$//;
3432: }
3433: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3434: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3435: push(@{$related{$swfargs[0]}},$swfargs[2]);
3436: } else {
3437: $related{$swfargs[0]} = [$swfargs[2]];
3438: }
3439: }
3440: }
3441: }
3442: if (lc($tagname) eq 'link') {
3443: if (lc($attr->{'rel'}) eq 'stylesheet') {
3444: &add_filetype($allfiles,$attr->{'href'},'href');
3445: }
3446: }
3447: if (lc($tagname) eq 'object' ||
3448: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3449: foreach my $item (keys(%javafiles)) {
3450: $javafiles{$item} = '';
3451: }
3452: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3453: $lastids{lc($tagname)} = $attr->{'id'};
3454: }
3455: }
3456: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3457: my $name = lc($attr->{'name'});
3458: foreach my $item (keys(%javafiles)) {
3459: if ($name eq $item) {
3460: $javafiles{$item} = $attr->{'value'};
3461: last;
3462: }
3463: }
3464: my $pathfrom;
3465: foreach my $item (keys(%mediafiles)) {
3466: if ($name eq $item) {
3467: $pathfrom = $attr->{'value'};
3468: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3469: &add_filetype($allfiles,$pathfrom,$name);
3470: last;
3471: }
3472: }
3473: if ($name eq 'flashvars') {
3474: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3475: }
3476: if ($pathfrom ne '') {
3477: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3478: $pathfrom);
3479: }
3480: }
3481: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3482: foreach my $item (keys(%javafiles)) {
3483: if ($attr->{$item}) {
3484: $javafiles{$item} = $attr->{$item};
3485: last;
3486: }
3487: }
3488: foreach my $item (keys(%mediafiles)) {
3489: if ($attr->{$item}) {
3490: &add_filetype($allfiles,$attr->{$item},$item);
3491: last;
3492: }
3493: }
3494: if (lc($tagname) eq 'embed') {
3495: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3496: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3497: $attr->{'src'});
3498: }
3499: }
3500: }
3501: if ($t->[4] =~ m{/>$}) {
3502: pop(@state);
3503: }
3504: } elsif ($t->[0] eq 'E') {
3505: my ($tagname) = ($t->[1]);
3506: if ($javafiles{'codebase'} ne '') {
3507: $javafiles{'codebase'} .= '/';
3508: }
3509: if (lc($tagname) eq 'applet' ||
3510: lc($tagname) eq 'object' ||
3511: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3512: ) {
3513: foreach my $item (keys(%javafiles)) {
3514: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3515: my $file=$javafiles{'codebase'}.$javafiles{$item};
3516: &add_filetype($allfiles,$file,$item);
3517: }
3518: }
3519: }
3520: pop @state;
3521: }
3522: }
3523: foreach my $id (sort(keys(%flashvars))) {
3524: if ($shockwave{$id} ne '') {
3525: my @pairs = split(/\&/,$flashvars{$id});
3526: foreach my $pair (@pairs) {
3527: my ($key,$value) = split(/\=/,$pair);
3528: if ($key eq 'thumb') {
3529: &add_filetype($allfiles,$value,$key);
3530: } elsif ($key eq 'content') {
3531: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3532: my ($ext) = ($value =~ /\.([^.]+)$/);
3533: if ($ext ne '') {
3534: &add_filetype($allfiles,$path.$value,$ext);
3535: }
3536: }
3537: }
3538: }
3539: }
3540: return 'ok';
3541: }
3542:
3543: sub add_filetype {
3544: my ($allfiles,$file,$type)=@_;
3545: if (exists($allfiles->{$file})) {
3546: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3547: push(@{$allfiles->{$file}}, &escape($type));
3548: }
3549: } else {
3550: @{$allfiles->{$file}} = (&escape($type));
3551: }
3552: }
3553:
3554: sub embedded_dependency {
3555: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3556: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3557: if (($identifier ne '') &&
3558: (ref($related->{$identifier}) eq 'ARRAY') &&
3559: ($pathfrom ne '')) {
3560: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3561: foreach my $dep (@{$related->{$identifier}}) {
3562: &add_filetype($allfiles,$path.$dep,'object');
3563: }
3564: }
3565: }
3566: return;
3567: }
3568:
3569: sub removeuploadedurl {
3570: my ($url)=@_;
3571: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3572: return &removeuserfile($uname,$udom,$fname);
3573: }
3574:
3575: sub removeuserfile {
3576: my ($docuname,$docudom,$fname)=@_;
3577: my $home=&homeserver($docuname,$docudom);
3578: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3579: if ($result eq 'ok') {
3580: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3581: my $metafile = $fname.'.meta';
3582: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3583: my $url = "/uploaded/$docudom/$docuname/$fname";
3584: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3585: my $sqlresult =
3586: &update_portfolio_table($docuname,$docudom,$file,
3587: 'portfolio_metadata',$group,
3588: 'delete');
3589: }
3590: }
3591: return $result;
3592: }
3593:
3594: sub mkdiruserfile {
3595: my ($docuname,$docudom,$dir)=@_;
3596: my $home=&homeserver($docuname,$docudom);
3597: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3598: }
3599:
3600: sub renameuserfile {
3601: my ($docuname,$docudom,$old,$new)=@_;
3602: my $home=&homeserver($docuname,$docudom);
3603: my $result = &reply("renameuserfile:$docudom:$docuname:".
3604: &escape("$old").':'.&escape("$new"),$home);
3605: if ($result eq 'ok') {
3606: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3607: my $oldmeta = $old.'.meta';
3608: my $newmeta = $new.'.meta';
3609: my $metaresult =
3610: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3611: my $url = "/uploaded/$docudom/$docuname/$old";
3612: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3613: my $sqlresult =
3614: &update_portfolio_table($docuname,$docudom,$file,
3615: 'portfolio_metadata',$group,
3616: 'delete');
3617: }
3618: }
3619: return $result;
3620: }
3621:
3622: # ------------------------------------------------------------------------- Log
3623:
3624: sub log {
3625: my ($dom,$nam,$hom,$what)=@_;
3626: return critical("log:$dom:$nam:$what",$hom);
3627: }
3628:
3629: # ------------------------------------------------------------------ Course Log
3630: #
3631: # This routine flushes several buffers of non-mission-critical nature
3632: #
3633:
3634: sub flushcourselogs {
3635: &logthis('Flushing log buffers');
3636: #
3637: # course logs
3638: # This is a log of all transactions in a course, which can be used
3639: # for data mining purposes
3640: #
3641: # It also collects the courseid database, which lists last transaction
3642: # times and course titles for all courseids
3643: #
3644: my %courseidbuffer=();
3645: foreach my $crsid (keys(%courselogs)) {
3646: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3647: &escape($courselogs{$crsid}),
3648: $coursehombuf{$crsid}) eq 'ok') {
3649: delete $courselogs{$crsid};
3650: } else {
3651: &logthis('Failed to flush log buffer for '.$crsid);
3652: if (length($courselogs{$crsid})>40000) {
3653: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3654: " exceeded maximum size, deleting.</font>");
3655: delete $courselogs{$crsid};
3656: }
3657: }
3658: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3659: 'description' => $coursedescrbuf{$crsid},
3660: 'inst_code' => $courseinstcodebuf{$crsid},
3661: 'type' => $coursetypebuf{$crsid},
3662: 'owner' => $courseownerbuf{$crsid},
3663: };
3664: }
3665: #
3666: # Write course id database (reverse lookup) to homeserver of courses
3667: # Is used in pickcourse
3668: #
3669: foreach my $crs_home (keys(%courseidbuffer)) {
3670: my $response = &courseidput(&host_domain($crs_home),
3671: $courseidbuffer{$crs_home},
3672: $crs_home,'timeonly');
3673: }
3674: #
3675: # File accesses
3676: # Writes to the dynamic metadata of resources to get hit counts, etc.
3677: #
3678: foreach my $entry (keys(%accesshash)) {
3679: if ($entry =~ /___count$/) {
3680: my ($dom,$name);
3681: ($dom,$name,undef)=
3682: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3683: if (! defined($dom) || $dom eq '' ||
3684: ! defined($name) || $name eq '') {
3685: my $cid = $env{'request.course.id'};
3686: $dom = $env{'request.'.$cid.'.domain'};
3687: $name = $env{'request.'.$cid.'.num'};
3688: }
3689: my $value = $accesshash{$entry};
3690: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3691: my %temphash=($url => $value);
3692: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3693: if ($result eq 'ok') {
3694: delete $accesshash{$entry};
3695: }
3696: } else {
3697: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3698: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3699: my %temphash=($entry => $accesshash{$entry});
3700: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3701: delete $accesshash{$entry};
3702: }
3703: }
3704: }
3705: #
3706: # Roles
3707: # Reverse lookup of user roles for course faculty/staff and co-authorship
3708: #
3709: foreach my $entry (keys(%userrolehash)) {
3710: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3711: split(/\:/,$entry);
3712: if (&Apache::lonnet::put('nohist_userroles',
3713: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3714: $rudom,$runame) eq 'ok') {
3715: delete $userrolehash{$entry};
3716: }
3717: }
3718: #
3719: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3720: #
3721: my %domrolebuffer = ();
3722: foreach my $entry (keys(%domainrolehash)) {
3723: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3724: if ($domrolebuffer{$rudom}) {
3725: $domrolebuffer{$rudom}.='&'.&escape($entry).
3726: '='.&escape($domainrolehash{$entry});
3727: } else {
3728: $domrolebuffer{$rudom}.=&escape($entry).
3729: '='.&escape($domainrolehash{$entry});
3730: }
3731: delete $domainrolehash{$entry};
3732: }
3733: foreach my $dom (keys(%domrolebuffer)) {
3734: my %servers = &get_servers($dom,'library');
3735: foreach my $tryserver (keys(%servers)) {
3736: unless (&reply('domroleput:'.$dom.':'.
3737: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3738: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3739: }
3740: }
3741: }
3742: $dumpcount++;
3743: }
3744:
3745: sub courselog {
3746: my $what=shift;
3747: $what=time.':'.$what;
3748: unless ($env{'request.course.id'}) { return ''; }
3749: $coursedombuf{$env{'request.course.id'}}=
3750: $env{'course.'.$env{'request.course.id'}.'.domain'};
3751: $coursenumbuf{$env{'request.course.id'}}=
3752: $env{'course.'.$env{'request.course.id'}.'.num'};
3753: $coursehombuf{$env{'request.course.id'}}=
3754: $env{'course.'.$env{'request.course.id'}.'.home'};
3755: $coursedescrbuf{$env{'request.course.id'}}=
3756: $env{'course.'.$env{'request.course.id'}.'.description'};
3757: $courseinstcodebuf{$env{'request.course.id'}}=
3758: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3759: $courseownerbuf{$env{'request.course.id'}}=
3760: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3761: $coursetypebuf{$env{'request.course.id'}}=
3762: $env{'course.'.$env{'request.course.id'}.'.type'};
3763: if (defined $courselogs{$env{'request.course.id'}}) {
3764: $courselogs{$env{'request.course.id'}}.='&'.$what;
3765: } else {
3766: $courselogs{$env{'request.course.id'}}.=$what;
3767: }
3768: if (length($courselogs{$env{'request.course.id'}})>4048) {
3769: &flushcourselogs();
3770: }
3771: }
3772:
3773: sub courseacclog {
3774: my $fnsymb=shift;
3775: unless ($env{'request.course.id'}) { return ''; }
3776: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3777: if ($fnsymb=~/$LONCAPA::assess_re/) {
3778: $what.=':POST';
3779: # FIXME: Probably ought to escape things....
3780: foreach my $key (keys(%env)) {
3781: if ($key=~/^form\.(.*)/) {
3782: my $formitem = $1;
3783: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3784: $what.=':'.$formitem.'='.$env{$key};
3785: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3786: $what.=':'.$formitem.'='.$env{$key};
3787: }
3788: }
3789: }
3790: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3791: # FIXME: We should not be depending on a form parameter that someone
3792: # editing lonsearchcat.pm might change in the future.
3793: if ($env{'form.phase'} eq 'course_search') {
3794: $what.= ':POST';
3795: # FIXME: Probably ought to escape things....
3796: foreach my $element ('courseexp','crsfulltext','crsrelated',
3797: 'crsdiscuss') {
3798: $what.=':'.$element.'='.$env{'form.'.$element};
3799: }
3800: }
3801: }
3802: &courselog($what);
3803: }
3804:
3805: sub countacc {
3806: my $url=&declutter(shift);
3807: return if (! defined($url) || $url eq '');
3808: unless ($env{'request.course.id'}) { return ''; }
3809: #
3810: # Mark that this url was used in this course
3811: #
3812: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3813: #
3814: # Increase the access count for this resource in this child process
3815: #
3816: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3817: $accesshash{$key}++;
3818: }
3819:
3820: sub linklog {
3821: my ($from,$to)=@_;
3822: $from=&declutter($from);
3823: $to=&declutter($to);
3824: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3825: $accesshash{$to.'___'.$from.'___goto'}=1;
3826: }
3827:
3828: sub statslog {
3829: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3830: if ($users<2) { return; }
3831: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3832: 'course' => $env{'request.course.id'},
3833: 'sections' => '"all"',
3834: 'num_students' => $users,
3835: 'part' => $part,
3836: 'symb' => $symb,
3837: 'mean_tries' => $av_attempts,
3838: 'deg_of_diff' => $degdiff});
3839: foreach my $key (keys(%dynstore)) {
3840: $accesshash{$key}=$dynstore{$key};
3841: }
3842: }
3843:
3844: sub userrolelog {
3845: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3846: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3847: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3848: $userrolehash
3849: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3850: =$tend.':'.$tstart;
3851: }
3852: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3853: $userrolehash
3854: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3855: =$tend.':'.$tstart;
3856: }
3857: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3858: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3859: $domainrolehash
3860: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3861: = $tend.':'.$tstart;
3862: }
3863: }
3864:
3865: sub courserolelog {
3866: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3867: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3868: my $cdom = $1;
3869: my $cnum = $2;
3870: my $sec = $3;
3871: my $namespace = 'rolelog';
3872: my %storehash = (
3873: role => $trole,
3874: start => $tstart,
3875: end => $tend,
3876: selfenroll => $selfenroll,
3877: context => $context,
3878: );
3879: if ($trole eq 'gr') {
3880: $namespace = 'groupslog';
3881: $storehash{'group'} = $sec;
3882: } else {
3883: $storehash{'section'} = $sec;
3884: }
3885: &write_log('course',$namespace,\%storehash,$delflag,$username,
3886: $domain,$cnum,$cdom);
3887: if (($trole ne 'st') || ($sec ne '')) {
3888: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3889: }
3890: }
3891: return;
3892: }
3893:
3894: sub domainrolelog {
3895: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3896: if ($area =~ m{^/($match_domain)/$}) {
3897: my $cdom = $1;
3898: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3899: my $namespace = 'rolelog';
3900: my %storehash = (
3901: role => $trole,
3902: start => $tstart,
3903: end => $tend,
3904: context => $context,
3905: );
3906: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3907: $domain,$domconfiguser,$cdom);
3908: }
3909: return;
3910:
3911: }
3912:
3913: sub coauthorrolelog {
3914: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3915: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3916: my $audom = $1;
3917: my $auname = $2;
3918: my $namespace = 'rolelog';
3919: my %storehash = (
3920: role => $trole,
3921: start => $tstart,
3922: end => $tend,
3923: context => $context,
3924: );
3925: &write_log('author',$namespace,\%storehash,$delflag,$username,
3926: $domain,$auname,$audom);
3927: }
3928: return;
3929: }
3930:
3931: sub get_course_adv_roles {
3932: my ($cid,$codes) = @_;
3933: $cid=$env{'request.course.id'} unless (defined($cid));
3934: my %coursehash=&coursedescription($cid);
3935: my $crstype = &Apache::loncommon::course_type($cid);
3936: my %nothide=();
3937: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3938: if ($user !~ /:/) {
3939: $nothide{join(':',split(/[\@]/,$user))}=1;
3940: } else {
3941: $nothide{$user}=1;
3942: }
3943: }
3944: my @possdoms = ($coursehash{'domain'});
3945: if ($coursehash{'checkforpriv'}) {
3946: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3947: }
3948: my %returnhash=();
3949: my %dumphash=
3950: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3951: my $now=time;
3952: my %privileged;
3953: foreach my $entry (keys(%dumphash)) {
3954: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3955: if (($tstart) && ($tstart<0)) { next; }
3956: if (($tend) && ($tend<$now)) { next; }
3957: if (($tstart) && ($now<$tstart)) { next; }
3958: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3959: if ($username eq '' || $domain eq '') { next; }
3960: if ((&privileged($username,$domain,\@possdoms)) &&
3961: (!$nothide{$username.':'.$domain})) { next; }
3962: if ($role eq 'cr') { next; }
3963: if ($codes) {
3964: if ($section) { $role .= ':'.$section; }
3965: if ($returnhash{$role}) {
3966: $returnhash{$role}.=','.$username.':'.$domain;
3967: } else {
3968: $returnhash{$role}=$username.':'.$domain;
3969: }
3970: } else {
3971: my $key=&plaintext($role,$crstype);
3972: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3973: if ($returnhash{$key}) {
3974: $returnhash{$key}.=','.$username.':'.$domain;
3975: } else {
3976: $returnhash{$key}=$username.':'.$domain;
3977: }
3978: }
3979: }
3980: return %returnhash;
3981: }
3982:
3983: sub get_my_roles {
3984: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3985: unless (defined($uname)) { $uname=$env{'user.name'}; }
3986: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3987: my (%dumphash,%nothide);
3988: if ($context eq 'userroles') {
3989: %dumphash = &dump('roles',$udom,$uname);
3990: } else {
3991: %dumphash = &dump('nohist_userroles',$udom,$uname);
3992: if ($hidepriv) {
3993: my %coursehash=&coursedescription($udom.'_'.$uname);
3994: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3995: if ($user !~ /:/) {
3996: $nothide{join(':',split(/[\@]/,$user))} = 1;
3997: } else {
3998: $nothide{$user} = 1;
3999: }
4000: }
4001: }
4002: }
4003: my %returnhash=();
4004: my $now=time;
4005: my %privileged;
4006: foreach my $entry (keys(%dumphash)) {
4007: my ($role,$tend,$tstart);
4008: if ($context eq 'userroles') {
4009: next if ($entry =~ /^rolesdef/);
4010: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4011: } else {
4012: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4013: }
4014: if (($tstart) && ($tstart<0)) { next; }
4015: my $status = 'active';
4016: if (($tend) && ($tend<=$now)) {
4017: $status = 'previous';
4018: }
4019: if (($tstart) && ($now<$tstart)) {
4020: $status = 'future';
4021: }
4022: if (ref($types) eq 'ARRAY') {
4023: if (!grep(/^\Q$status\E$/,@{$types})) {
4024: next;
4025: }
4026: } else {
4027: if ($status ne 'active') {
4028: next;
4029: }
4030: }
4031: my ($rolecode,$username,$domain,$section,$area);
4032: if ($context eq 'userroles') {
4033: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4034: (undef,$domain,$username,$section) = split(/\//,$area);
4035: } else {
4036: ($role,$username,$domain,$section) = split(/\:/,$entry);
4037: }
4038: if (ref($roledoms) eq 'ARRAY') {
4039: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4040: next;
4041: }
4042: }
4043: if (ref($roles) eq 'ARRAY') {
4044: if (!grep(/^\Q$role\E$/,@{$roles})) {
4045: if ($role =~ /^cr\//) {
4046: if (!grep(/^cr$/,@{$roles})) {
4047: next;
4048: }
4049: } elsif ($role =~ /^gr\//) {
4050: if (!grep(/^gr$/,@{$roles})) {
4051: next;
4052: }
4053: } else {
4054: next;
4055: }
4056: }
4057: }
4058: if ($hidepriv) {
4059: my @privroles = ('dc','su');
4060: if ($context eq 'userroles') {
4061: next if (grep(/^\Q$role\E$/,@privroles));
4062: } else {
4063: my $possdoms = [$domain];
4064: if (ref($roledoms) eq 'ARRAY') {
4065: push(@{$possdoms},@{$roledoms});
4066: }
4067: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4068: if (!$nothide{$username.':'.$domain}) {
4069: next;
4070: }
4071: }
4072: }
4073: }
4074: if ($withsec) {
4075: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4076: $tstart.':'.$tend;
4077: } else {
4078: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4079: }
4080: }
4081: return %returnhash;
4082: }
4083:
4084: # ----------------------------------------------------- Frontpage Announcements
4085: #
4086: #
4087:
4088: sub postannounce {
4089: my ($server,$text)=@_;
4090: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4091: unless ($text=~/\w/) { $text=''; }
4092: return &reply('setannounce:'.&escape($text),$server);
4093: }
4094:
4095: sub getannounce {
4096:
4097: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4098: my $announcement='';
4099: while (my $line = <$fh>) { $announcement .= $line; }
4100: close($fh);
4101: if ($announcement=~/\w/) {
4102: return
4103: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4104: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4105: } else {
4106: return '';
4107: }
4108: } else {
4109: return '';
4110: }
4111: }
4112:
4113: # ---------------------------------------------------------- Course ID routines
4114: # Deal with domain's nohist_courseid.db files
4115: #
4116:
4117: sub courseidput {
4118: my ($domain,$storehash,$coursehome,$caller) = @_;
4119: return unless (ref($storehash) eq 'HASH');
4120: my $outcome;
4121: if ($caller eq 'timeonly') {
4122: my $cids = '';
4123: foreach my $item (keys(%$storehash)) {
4124: $cids.=&escape($item).'&';
4125: }
4126: $cids=~s/\&$//;
4127: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4128: $coursehome);
4129: } else {
4130: my $items = '';
4131: foreach my $item (keys(%$storehash)) {
4132: $items.= &escape($item).'='.
4133: &freeze_escape($$storehash{$item}).'&';
4134: }
4135: $items=~s/\&$//;
4136: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4137: $coursehome);
4138: }
4139: if ($outcome eq 'unknown_cmd') {
4140: my $what;
4141: foreach my $cid (keys(%$storehash)) {
4142: $what .= &escape($cid).'=';
4143: foreach my $item ('description','inst_code','owner','type') {
4144: $what .= &escape($storehash->{$cid}{$item}).':';
4145: }
4146: $what =~ s/\:$/&/;
4147: }
4148: $what =~ s/\&$//;
4149: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4150: } else {
4151: return $outcome;
4152: }
4153: }
4154:
4155: sub courseiddump {
4156: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4157: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4158: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4159: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4160: my $as_hash = 1;
4161: my %returnhash;
4162: if (!$domfilter) { $domfilter=''; }
4163: my %libserv = &all_library();
4164: foreach my $tryserver (keys(%libserv)) {
4165: if ( ( $hostidflag == 1
4166: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4167: || (!defined($hostidflag)) ) {
4168:
4169: if (($domfilter eq '') ||
4170: (&host_domain($tryserver) eq $domfilter)) {
4171: my $rep;
4172: if (grep { $_ eq $tryserver } current_machine_ids()) {
4173: $rep = LONCAPA::Lond::dump_course_id_handler(
4174: join(":", (&host_domain($tryserver), $sincefilter,
4175: &escape($descfilter), &escape($instcodefilter),
4176: &escape($ownerfilter), &escape($coursefilter),
4177: &escape($typefilter), &escape($regexp_ok),
4178: $as_hash, &escape($selfenrollonly),
4179: &escape($catfilter), $showhidden, $caller,
4180: &escape($cloner), &escape($cc_clone), $cloneonly,
4181: &escape($createdbefore), &escape($createdafter),
4182: &escape($creationcontext), $domcloner)));
4183: } else {
4184: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4185: $sincefilter.':'.&escape($descfilter).':'.
4186: &escape($instcodefilter).':'.&escape($ownerfilter).
4187: ':'.&escape($coursefilter).':'.&escape($typefilter).
4188: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4189: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4190: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4191: &escape($cc_clone).':'.$cloneonly.':'.
4192: &escape($createdbefore).':'.&escape($createdafter).':'.
4193: &escape($creationcontext).':'.$domcloner,
4194: $tryserver);
4195: }
4196:
4197: my @pairs=split(/\&/,$rep);
4198: foreach my $item (@pairs) {
4199: my ($key,$value)=split(/\=/,$item,2);
4200: $key = &unescape($key);
4201: next if ($key =~ /^error: 2 /);
4202: my $result = &thaw_unescape($value);
4203: if (ref($result) eq 'HASH') {
4204: $returnhash{$key}=$result;
4205: } else {
4206: my @responses = split(/:/,$value);
4207: my @items = ('description','inst_code','owner','type');
4208: for (my $i=0; $i<@responses; $i++) {
4209: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4210: }
4211: }
4212: }
4213: }
4214: }
4215: }
4216: return %returnhash;
4217: }
4218:
4219: sub courselastaccess {
4220: my ($cdom,$cnum,$hostidref) = @_;
4221: my %returnhash;
4222: if ($cdom && $cnum) {
4223: my $chome = &homeserver($cnum,$cdom);
4224: if ($chome ne 'no_host') {
4225: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4226: &extract_lastaccess(\%returnhash,$rep);
4227: }
4228: } else {
4229: if (!$cdom) { $cdom=''; }
4230: my %libserv = &all_library();
4231: foreach my $tryserver (keys(%libserv)) {
4232: if (ref($hostidref) eq 'ARRAY') {
4233: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4234: }
4235: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4236: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4237: &extract_lastaccess(\%returnhash,$rep);
4238: }
4239: }
4240: }
4241: return %returnhash;
4242: }
4243:
4244: sub extract_lastaccess {
4245: my ($returnhash,$rep) = @_;
4246: if (ref($returnhash) eq 'HASH') {
4247: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4248: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4249: $rep eq '') {
4250: my @pairs=split(/\&/,$rep);
4251: foreach my $item (@pairs) {
4252: my ($key,$value)=split(/\=/,$item,2);
4253: $key = &unescape($key);
4254: next if ($key =~ /^error: 2 /);
4255: $returnhash->{$key} = &thaw_unescape($value);
4256: }
4257: }
4258: }
4259: return;
4260: }
4261:
4262: # ---------------------------------------------------------- DC e-mail
4263:
4264: sub dcmailput {
4265: my ($domain,$msgid,$message,$server)=@_;
4266: my $status = &Apache::lonnet::critical(
4267: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4268: &escape($message),$server);
4269: return $status;
4270: }
4271:
4272: sub dcmaildump {
4273: my ($dom,$startdate,$enddate,$senders) = @_;
4274: my %returnhash=();
4275:
4276: if (defined(&domain($dom,'primary'))) {
4277: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4278: &escape($enddate).':';
4279: my @esc_senders=map { &escape($_)} @$senders;
4280: $cmd.=&escape(join('&',@esc_senders));
4281: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4282: my ($key,$value) = split(/\=/,$line,2);
4283: if (($key) && ($value)) {
4284: $returnhash{&unescape($key)} = &unescape($value);
4285: }
4286: }
4287: }
4288: return %returnhash;
4289: }
4290: # ---------------------------------------------------------- Domain roles
4291:
4292: sub get_domain_roles {
4293: my ($dom,$roles,$startdate,$enddate)=@_;
4294: if ((!defined($startdate)) || ($startdate eq '')) {
4295: $startdate = '.';
4296: }
4297: if ((!defined($enddate)) || ($enddate eq '')) {
4298: $enddate = '.';
4299: }
4300: my $rolelist;
4301: if (ref($roles) eq 'ARRAY') {
4302: $rolelist = join('&',@{$roles});
4303: }
4304: my %personnel = ();
4305:
4306: my %servers = &get_servers($dom,'library');
4307: foreach my $tryserver (keys(%servers)) {
4308: %{$personnel{$tryserver}}=();
4309: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4310: &escape($startdate).':'.
4311: &escape($enddate).':'.
4312: &escape($rolelist), $tryserver))) {
4313: my ($key,$value) = split(/\=/,$line,2);
4314: if (($key) && ($value)) {
4315: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4316: }
4317: }
4318: }
4319: return %personnel;
4320: }
4321:
4322: # ----------------------------------------------------------- Interval timing
4323:
4324: {
4325: # Caches needed for speedup of navmaps
4326: # We don't want to cache this for very long at all (5 seconds at most)
4327: #
4328: # The user for whom we cache
4329: my $cachedkey='';
4330: # The cached times for this user
4331: my %cachedtimes=();
4332: # When this was last done
4333: my $cachedtime=();
4334:
4335: sub load_all_first_access {
4336: my ($uname,$udom)=@_;
4337: if (($cachedkey eq $uname.':'.$udom) &&
4338: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4339: return;
4340: }
4341: $cachedtime=time;
4342: $cachedkey=$uname.':'.$udom;
4343: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4344: }
4345:
4346: sub get_first_access {
4347: my ($type,$argsymb,$argmap)=@_;
4348: my ($symb,$courseid,$udom,$uname)=&whichuser();
4349: if ($argsymb) { $symb=$argsymb; }
4350: my ($map,$id,$res)=&decode_symb($symb);
4351: if ($argmap) { $map = $argmap; }
4352: if ($type eq 'course') {
4353: $res='course';
4354: } elsif ($type eq 'map') {
4355: $res=&symbread($map);
4356: } else {
4357: $res=$symb;
4358: }
4359: &load_all_first_access($uname,$udom);
4360: return $cachedtimes{"$courseid\0$res"};
4361: }
4362:
4363: sub set_first_access {
4364: my ($type,$interval)=@_;
4365: my ($symb,$courseid,$udom,$uname)=&whichuser();
4366: my ($map,$id,$res)=&decode_symb($symb);
4367: if ($type eq 'course') {
4368: $res='course';
4369: } elsif ($type eq 'map') {
4370: $res=&symbread($map);
4371: } else {
4372: $res=$symb;
4373: }
4374: $cachedkey='';
4375: my $firstaccess=&get_first_access($type,$symb,$map);
4376: if (!$firstaccess) {
4377: my $start = time;
4378: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4379: $udom,$uname);
4380: if ($putres eq 'ok') {
4381: &put('timerinterval',{"$courseid\0$res"=>$interval},
4382: $udom,$uname);
4383: &appenv(
4384: {
4385: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4386: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4387: }
4388: );
4389: }
4390: return $putres;
4391: }
4392: return 'already_set';
4393: }
4394: }
4395: # --------------------------------------------- Set Expire Date for Spreadsheet
4396:
4397: sub expirespread {
4398: my ($uname,$udom,$stype,$usymb)=@_;
4399: my $cid=$env{'request.course.id'};
4400: if ($cid) {
4401: my $now=time;
4402: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4403: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4404: $env{'course.'.$cid.'.num'}.
4405: ':nohist_expirationdates:'.
4406: &escape($key).'='.$now,
4407: $env{'course.'.$cid.'.home'})
4408: }
4409: return 'ok';
4410: }
4411:
4412: # ----------------------------------------------------- Devalidate Spreadsheets
4413:
4414: sub devalidate {
4415: my ($symb,$uname,$udom)=@_;
4416: my $cid=$env{'request.course.id'};
4417: if ($cid) {
4418: # delete the stored spreadsheets for
4419: # - the student level sheet of this user in course's homespace
4420: # - the assessment level sheet for this resource
4421: # for this user in user's homespace
4422: # - current conditional state info
4423: my $key=$uname.':'.$udom.':';
4424: my $status=
4425: &del('nohist_calculatedsheets',
4426: [$key.'studentcalc:'],
4427: $env{'course.'.$cid.'.domain'},
4428: $env{'course.'.$cid.'.num'})
4429: .' '.
4430: &del('nohist_calculatedsheets_'.$cid,
4431: [$key.'assesscalc:'.$symb],$udom,$uname);
4432: unless ($status eq 'ok ok') {
4433: &logthis('Could not devalidate spreadsheet '.
4434: $uname.' at '.$udom.' for '.
4435: $symb.': '.$status);
4436: }
4437: &delenv('user.state.'.$cid);
4438: }
4439: }
4440:
4441: sub get_scalar {
4442: my ($string,$end) = @_;
4443: my $value;
4444: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4445: $value = $1;
4446: } elsif ($$string =~ s/^([^&]*?)&//) {
4447: $value = $1;
4448: }
4449: return &unescape($value);
4450: }
4451:
4452: sub array2str {
4453: my (@array) = @_;
4454: my $result=&arrayref2str(\@array);
4455: $result=~s/^__ARRAY_REF__//;
4456: $result=~s/__END_ARRAY_REF__$//;
4457: return $result;
4458: }
4459:
4460: sub arrayref2str {
4461: my ($arrayref) = @_;
4462: my $result='__ARRAY_REF__';
4463: foreach my $elem (@$arrayref) {
4464: if(ref($elem) eq 'ARRAY') {
4465: $result.=&arrayref2str($elem).'&';
4466: } elsif(ref($elem) eq 'HASH') {
4467: $result.=&hashref2str($elem).'&';
4468: } elsif(ref($elem)) {
4469: #print("Got a ref of ".(ref($elem))." skipping.");
4470: } else {
4471: $result.=&escape($elem).'&';
4472: }
4473: }
4474: $result=~s/\&$//;
4475: $result .= '__END_ARRAY_REF__';
4476: return $result;
4477: }
4478:
4479: sub hash2str {
4480: my (%hash) = @_;
4481: my $result=&hashref2str(\%hash);
4482: $result=~s/^__HASH_REF__//;
4483: $result=~s/__END_HASH_REF__$//;
4484: return $result;
4485: }
4486:
4487: sub hashref2str {
4488: my ($hashref)=@_;
4489: my $result='__HASH_REF__';
4490: foreach my $key (sort(keys(%$hashref))) {
4491: if (ref($key) eq 'ARRAY') {
4492: $result.=&arrayref2str($key).'=';
4493: } elsif (ref($key) eq 'HASH') {
4494: $result.=&hashref2str($key).'=';
4495: } elsif (ref($key)) {
4496: $result.='=';
4497: #print("Got a ref of ".(ref($key))." skipping.");
4498: } else {
4499: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4500: }
4501:
4502: if(ref($hashref->{$key}) eq 'ARRAY') {
4503: $result.=&arrayref2str($hashref->{$key}).'&';
4504: } elsif(ref($hashref->{$key}) eq 'HASH') {
4505: $result.=&hashref2str($hashref->{$key}).'&';
4506: } elsif(ref($hashref->{$key})) {
4507: $result.='&';
4508: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4509: } else {
4510: $result.=&escape($hashref->{$key}).'&';
4511: }
4512: }
4513: $result=~s/\&$//;
4514: $result .= '__END_HASH_REF__';
4515: return $result;
4516: }
4517:
4518: sub str2hash {
4519: my ($string)=@_;
4520: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4521: return %$hash;
4522: }
4523:
4524: sub str2hashref {
4525: my ($string) = @_;
4526:
4527: my %hash;
4528:
4529: if($string !~ /^__HASH_REF__/) {
4530: if (! ($string eq '' || !defined($string))) {
4531: $hash{'error'}='Not hash reference';
4532: }
4533: return (\%hash, $string);
4534: }
4535:
4536: $string =~ s/^__HASH_REF__//;
4537:
4538: while($string !~ /^__END_HASH_REF__/) {
4539: #key
4540: my $key='';
4541: if($string =~ /^__HASH_REF__/) {
4542: ($key, $string)=&str2hashref($string);
4543: if(defined($key->{'error'})) {
4544: $hash{'error'}='Bad data';
4545: return (\%hash, $string);
4546: }
4547: } elsif($string =~ /^__ARRAY_REF__/) {
4548: ($key, $string)=&str2arrayref($string);
4549: if($key->[0] eq 'Array reference error') {
4550: $hash{'error'}='Bad data';
4551: return (\%hash, $string);
4552: }
4553: } else {
4554: $string =~ s/^(.*?)=//;
4555: $key=&unescape($1);
4556: }
4557: $string =~ s/^=//;
4558:
4559: #value
4560: my $value='';
4561: if($string =~ /^__HASH_REF__/) {
4562: ($value, $string)=&str2hashref($string);
4563: if(defined($value->{'error'})) {
4564: $hash{'error'}='Bad data';
4565: return (\%hash, $string);
4566: }
4567: } elsif($string =~ /^__ARRAY_REF__/) {
4568: ($value, $string)=&str2arrayref($string);
4569: if($value->[0] eq 'Array reference error') {
4570: $hash{'error'}='Bad data';
4571: return (\%hash, $string);
4572: }
4573: } else {
4574: $value=&get_scalar(\$string,'__END_HASH_REF__');
4575: }
4576: $string =~ s/^&//;
4577:
4578: $hash{$key}=$value;
4579: }
4580:
4581: $string =~ s/^__END_HASH_REF__//;
4582:
4583: return (\%hash, $string);
4584: }
4585:
4586: sub str2array {
4587: my ($string)=@_;
4588: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4589: return @$array;
4590: }
4591:
4592: sub str2arrayref {
4593: my ($string) = @_;
4594: my @array;
4595:
4596: if($string !~ /^__ARRAY_REF__/) {
4597: if (! ($string eq '' || !defined($string))) {
4598: $array[0]='Array reference error';
4599: }
4600: return (\@array, $string);
4601: }
4602:
4603: $string =~ s/^__ARRAY_REF__//;
4604:
4605: while($string !~ /^__END_ARRAY_REF__/) {
4606: my $value='';
4607: if($string =~ /^__HASH_REF__/) {
4608: ($value, $string)=&str2hashref($string);
4609: if(defined($value->{'error'})) {
4610: $array[0] ='Array reference error';
4611: return (\@array, $string);
4612: }
4613: } elsif($string =~ /^__ARRAY_REF__/) {
4614: ($value, $string)=&str2arrayref($string);
4615: if($value->[0] eq 'Array reference error') {
4616: $array[0] ='Array reference error';
4617: return (\@array, $string);
4618: }
4619: } else {
4620: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4621: }
4622: $string =~ s/^&//;
4623:
4624: push(@array, $value);
4625: }
4626:
4627: $string =~ s/^__END_ARRAY_REF__//;
4628:
4629: return (\@array, $string);
4630: }
4631:
4632: # -------------------------------------------------------------------Temp Store
4633:
4634: sub tmpreset {
4635: my ($symb,$namespace,$domain,$stuname) = @_;
4636: if (!$symb) {
4637: $symb=&symbread();
4638: if (!$symb) { $symb= $env{'request.url'}; }
4639: }
4640: $symb=escape($symb);
4641:
4642: if (!$namespace) { $namespace=$env{'request.state'}; }
4643: $namespace=~s/\//\_/g;
4644: $namespace=~s/\W//g;
4645:
4646: if (!$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 $path=LONCAPA::tempdir();
4652: my %hash;
4653: if (tie(%hash,'GDBM_File',
4654: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4655: &GDBM_WRCREAT(),0640)) {
4656: foreach my $key (keys(%hash)) {
4657: if ($key=~ /:$symb/) {
4658: delete($hash{$key});
4659: }
4660: }
4661: }
4662: }
4663:
4664: sub tmpstore {
4665: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4666:
4667: if (!$symb) {
4668: $symb=&symbread();
4669: if (!$symb) { $symb= $env{'request.url'}; }
4670: }
4671: $symb=escape($symb);
4672:
4673: if (!$namespace) {
4674: # I don't think we would ever want to store this for a course.
4675: # it seems this will only be used if we don't have a course.
4676: #$namespace=$env{'request.course.id'};
4677: #if (!$namespace) {
4678: $namespace=$env{'request.state'};
4679: #}
4680: }
4681: $namespace=~s/\//\_/g;
4682: $namespace=~s/\W//g;
4683: if (!$domain) { $domain=$env{'user.domain'}; }
4684: if (!$stuname) { $stuname=$env{'user.name'}; }
4685: if ($domain eq 'public' && $stuname eq 'public') {
4686: $stuname=$ENV{'REMOTE_ADDR'};
4687: }
4688: my $now=time;
4689: my %hash;
4690: my $path=LONCAPA::tempdir();
4691: if (tie(%hash,'GDBM_File',
4692: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4693: &GDBM_WRCREAT(),0640)) {
4694: $hash{"version:$symb"}++;
4695: my $version=$hash{"version:$symb"};
4696: my $allkeys='';
4697: foreach my $key (keys(%$storehash)) {
4698: $allkeys.=$key.':';
4699: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4700: }
4701: $hash{"$version:$symb:timestamp"}=$now;
4702: $allkeys.='timestamp';
4703: $hash{"$version:keys:$symb"}=$allkeys;
4704: if (untie(%hash)) {
4705: return 'ok';
4706: } else {
4707: return "error:$!";
4708: }
4709: } else {
4710: return "error:$!";
4711: }
4712: }
4713:
4714: # -----------------------------------------------------------------Temp Restore
4715:
4716: sub tmprestore {
4717: my ($symb,$namespace,$domain,$stuname) = @_;
4718:
4719: if (!$symb) {
4720: $symb=&symbread();
4721: if (!$symb) { $symb= $env{'request.url'}; }
4722: }
4723: $symb=escape($symb);
4724:
4725: if (!$namespace) { $namespace=$env{'request.state'}; }
4726:
4727: if (!$domain) { $domain=$env{'user.domain'}; }
4728: if (!$stuname) { $stuname=$env{'user.name'}; }
4729: if ($domain eq 'public' && $stuname eq 'public') {
4730: $stuname=$ENV{'REMOTE_ADDR'};
4731: }
4732: my %returnhash;
4733: $namespace=~s/\//\_/g;
4734: $namespace=~s/\W//g;
4735: my %hash;
4736: my $path=LONCAPA::tempdir();
4737: if (tie(%hash,'GDBM_File',
4738: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4739: &GDBM_READER(),0640)) {
4740: my $version=$hash{"version:$symb"};
4741: $returnhash{'version'}=$version;
4742: my $scope;
4743: for ($scope=1;$scope<=$version;$scope++) {
4744: my $vkeys=$hash{"$scope:keys:$symb"};
4745: my @keys=split(/:/,$vkeys);
4746: my $key;
4747: $returnhash{"$scope:keys"}=$vkeys;
4748: foreach $key (@keys) {
4749: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4750: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4751: }
4752: }
4753: if (!(untie(%hash))) {
4754: return "error:$!";
4755: }
4756: } else {
4757: return "error:$!";
4758: }
4759: return %returnhash;
4760: }
4761:
4762: # ----------------------------------------------------------------------- Store
4763:
4764: sub store {
4765: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4766: my $home='';
4767:
4768: if ($stuname) { $home=&homeserver($stuname,$domain); }
4769:
4770: $symb=&symbclean($symb);
4771: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4772:
4773: if (!$domain) { $domain=$env{'user.domain'}; }
4774: if (!$stuname) { $stuname=$env{'user.name'}; }
4775:
4776: &devalidate($symb,$stuname,$domain);
4777:
4778: $symb=escape($symb);
4779: if (!$namespace) {
4780: unless ($namespace=$env{'request.course.id'}) {
4781: return '';
4782: }
4783: }
4784: if (!$home) { $home=$env{'user.home'}; }
4785:
4786: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4787: $$storehash{'host'}=$perlvar{'lonHostID'};
4788:
4789: my $namevalue='';
4790: foreach my $key (keys(%$storehash)) {
4791: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4792: }
4793: $namevalue=~s/\&$//;
4794: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4795: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4796: }
4797:
4798: # -------------------------------------------------------------- Critical Store
4799:
4800: sub cstore {
4801: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4802: my $home='';
4803:
4804: if ($stuname) { $home=&homeserver($stuname,$domain); }
4805:
4806: $symb=&symbclean($symb);
4807: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4808:
4809: if (!$domain) { $domain=$env{'user.domain'}; }
4810: if (!$stuname) { $stuname=$env{'user.name'}; }
4811:
4812: &devalidate($symb,$stuname,$domain);
4813:
4814: $symb=escape($symb);
4815: if (!$namespace) {
4816: unless ($namespace=$env{'request.course.id'}) {
4817: return '';
4818: }
4819: }
4820: if (!$home) { $home=$env{'user.home'}; }
4821:
4822: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4823: $$storehash{'host'}=$perlvar{'lonHostID'};
4824:
4825: my $namevalue='';
4826: foreach my $key (keys(%$storehash)) {
4827: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4828: }
4829: $namevalue=~s/\&$//;
4830: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4831: return critical
4832: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4833: }
4834:
4835: # --------------------------------------------------------------------- Restore
4836:
4837: sub restore {
4838: my ($symb,$namespace,$domain,$stuname) = @_;
4839: my $home='';
4840:
4841: if ($stuname) { $home=&homeserver($stuname,$domain); }
4842:
4843: if (!$symb) {
4844: return if ($namespace eq 'courserequests');
4845: unless ($symb=escape(&symbread())) { return ''; }
4846: } else {
4847: unless ($namespace eq 'courserequests') {
4848: $symb=&escape(&symbclean($symb));
4849: }
4850: }
4851: if (!$namespace) {
4852: unless ($namespace=$env{'request.course.id'}) {
4853: return '';
4854: }
4855: }
4856: if (!$domain) { $domain=$env{'user.domain'}; }
4857: if (!$stuname) { $stuname=$env{'user.name'}; }
4858: if (!$home) { $home=$env{'user.home'}; }
4859: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4860:
4861: my %returnhash=();
4862: foreach my $line (split(/\&/,$answer)) {
4863: my ($name,$value)=split(/\=/,$line);
4864: $returnhash{&unescape($name)}=&thaw_unescape($value);
4865: }
4866: my $version;
4867: for ($version=1;$version<=$returnhash{'version'};$version++) {
4868: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4869: $returnhash{$item}=$returnhash{$version.':'.$item};
4870: }
4871: }
4872: return %returnhash;
4873: }
4874:
4875: # ---------------------------------------------------------- Course Description
4876: #
4877: #
4878:
4879: sub coursedescription {
4880: my ($courseid,$args)=@_;
4881: $courseid=~s/^\///;
4882: $courseid=~s/\_/\//g;
4883: my ($cdomain,$cnum)=split(/\//,$courseid);
4884: my $chome=&homeserver($cnum,$cdomain);
4885: my $normalid=$cdomain.'_'.$cnum;
4886: # need to always cache even if we get errors otherwise we keep
4887: # trying and trying and trying to get the course description.
4888: my %envhash=();
4889: my %returnhash=();
4890:
4891: my $expiretime=600;
4892: if ($env{'request.course.id'} eq $normalid) {
4893: $expiretime=120;
4894: }
4895:
4896: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4897: if (!$args->{'freshen_cache'}
4898: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4899: foreach my $key (keys(%env)) {
4900: next if ($key !~ /^\Q$prefix\E(.*)/);
4901: my ($setting) = $1;
4902: $returnhash{$setting} = $env{$key};
4903: }
4904: return %returnhash;
4905: }
4906:
4907: # get the data again
4908:
4909: if (!$args->{'one_time'}) {
4910: $envhash{'course.'.$normalid.'.last_cache'}=time;
4911: }
4912:
4913: if ($chome ne 'no_host') {
4914: %returnhash=&dump('environment',$cdomain,$cnum);
4915: if (!exists($returnhash{'con_lost'})) {
4916: my $username = $env{'user.name'}; # Defult username
4917: if(defined $args->{'user'}) {
4918: $username = $args->{'user'};
4919: }
4920: $returnhash{'home'}= $chome;
4921: $returnhash{'domain'} = $cdomain;
4922: $returnhash{'num'} = $cnum;
4923: if (!defined($returnhash{'type'})) {
4924: $returnhash{'type'} = 'Course';
4925: }
4926: while (my ($name,$value) = each %returnhash) {
4927: $envhash{'course.'.$normalid.'.'.$name}=$value;
4928: }
4929: $returnhash{'url'}=&clutter($returnhash{'url'});
4930: $returnhash{'fn'}=LONCAPA::tempdir() .
4931: $username.'_'.$cdomain.'_'.$cnum;
4932: $envhash{'course.'.$normalid.'.home'}=$chome;
4933: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4934: $envhash{'course.'.$normalid.'.num'}=$cnum;
4935: }
4936: }
4937: if (!$args->{'one_time'}) {
4938: &appenv(\%envhash);
4939: }
4940: return %returnhash;
4941: }
4942:
4943: sub update_released_required {
4944: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4945: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4946: $cid = $env{'request.course.id'};
4947: $cdom = $env{'course.'.$cid.'.domain'};
4948: $cnum = $env{'course.'.$cid.'.num'};
4949: $chome = $env{'course.'.$cid.'.home'};
4950: }
4951: if ($needsrelease) {
4952: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4953: my $needsupdate;
4954: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4955: $needsupdate = 1;
4956: } else {
4957: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4958: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4959: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4960: $needsupdate = 1;
4961: }
4962: }
4963: if ($needsupdate) {
4964: my %needshash = (
4965: 'internal.releaserequired' => $needsrelease,
4966: );
4967: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4968: if ($putresult eq 'ok') {
4969: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4970: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4971: if (ref($crsinfo{$cid}) eq 'HASH') {
4972: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4973: &courseidput($cdom,\%crsinfo,$chome,'notime');
4974: }
4975: }
4976: }
4977: }
4978: return;
4979: }
4980:
4981: # -------------------------------------------------See if a user is privileged
4982:
4983: sub privileged {
4984: my ($username,$domain,$possdomains,$possroles)=@_;
4985: my $now = time;
4986: my $roles;
4987: if (ref($possroles) eq 'ARRAY') {
4988: $roles = $possroles;
4989: } else {
4990: $roles = ['dc','su'];
4991: }
4992: if (ref($possdomains) eq 'ARRAY') {
4993: my %privileged = &privileged_by_domain($possdomains,$roles);
4994: foreach my $dom (@{$possdomains}) {
4995: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
4996: (ref($privileged{$dom}) eq 'HASH')) {
4997: foreach my $role (@{$roles}) {
4998: if (ref($privileged{$dom}{$role}) eq 'HASH') {
4999: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5000: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5001: return 1 unless (($end && $end < $now) ||
5002: ($start && $start > $now));
5003: }
5004: }
5005: }
5006: }
5007: }
5008: } else {
5009: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5010: my $now = time;
5011:
5012: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
5013: my ($trole, $tend, $tstart) = split(/_/, $role);
5014: if (grep(/^\Q$trole\E$/,@{$roles})) {
5015: return 1 unless ($tend && $tend < $now)
5016: or ($tstart && $tstart > $now);
5017: }
5018: }
5019: }
5020: return 0;
5021: }
5022:
5023: sub privileged_by_domain {
5024: my ($domains,$roles) = @_;
5025: my %privileged = ();
5026: my $cachetime = 60*60*24;
5027: my $now = time;
5028: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5029: return %privileged;
5030: }
5031: foreach my $dom (@{$domains}) {
5032: next if (ref($privileged{$dom}) eq 'HASH');
5033: my $needroles;
5034: foreach my $role (@{$roles}) {
5035: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5036: if (defined($cached)) {
5037: if (ref($result) eq 'HASH') {
5038: $privileged{$dom}{$role} = $result;
5039: }
5040: } else {
5041: $needroles = 1;
5042: }
5043: }
5044: if ($needroles) {
5045: my %dompersonnel = &get_domain_roles($dom,$roles);
5046: $privileged{$dom} = {};
5047: foreach my $server (keys(%dompersonnel)) {
5048: if (ref($dompersonnel{$server}) eq 'HASH') {
5049: foreach my $item (keys(%{$dompersonnel{$server}})) {
5050: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5051: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5052: next if ($end && $end < $now);
5053: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5054: $dompersonnel{$server}{$item};
5055: }
5056: }
5057: }
5058: if (ref($privileged{$dom}) eq 'HASH') {
5059: foreach my $role (@{$roles}) {
5060: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5061: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5062: } else {
5063: my %hash = ();
5064: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5065: }
5066: }
5067: }
5068: }
5069: }
5070: return %privileged;
5071: }
5072:
5073: # -------------------------------------------------------- Get user privileges
5074:
5075: sub rolesinit {
5076: my ($domain, $username) = @_;
5077: my %userroles = ('user.login.time' => time);
5078: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5079:
5080: # firstaccess and timerinterval are related to timed maps/resources.
5081: # also, blocking can be triggered by an activating timer
5082: # it's saved in the user's %env.
5083: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5084: my %timerinterval = &dump('timerinterval', $domain, $username);
5085: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5086: %timerintchk, %timerintenv);
5087:
5088: foreach my $key (keys(%firstaccess)) {
5089: my ($cid, $rest) = split(/\0/, $key);
5090: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5091: }
5092:
5093: foreach my $key (keys(%timerinterval)) {
5094: my ($cid,$rest) = split(/\0/,$key);
5095: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5096: }
5097:
5098: my %allroles=();
5099: my %allgroups=();
5100:
5101: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
5102: my $role = $rolesdump{$area};
5103: $area =~ s/\_\w\w$//;
5104:
5105: my ($trole, $tend, $tstart, $group_privs);
5106:
5107: if ($role =~ /^cr/) {
5108: # Custom role, defined by a user
5109: # e.g., user.role.cr/msu/smith/mynewrole
5110: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5111: $trole = $1;
5112: ($tend, $tstart) = split('_', $2);
5113: } else {
5114: $trole = $role;
5115: }
5116: } elsif ($role =~ m|^gr/|) {
5117: # Role of member in a group, defined within a course/community
5118: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5119: ($trole, $tend, $tstart) = split(/_/, $role);
5120: next if $tstart eq '-1';
5121: ($trole, $group_privs) = split(/\//, $trole);
5122: $group_privs = &unescape($group_privs);
5123: } else {
5124: # Just a normal role, defined in roles.tab
5125: ($trole, $tend, $tstart) = split(/_/,$role);
5126: }
5127:
5128: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5129: $username);
5130: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5131:
5132: # role expired or not available yet?
5133: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5134: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5135:
5136: next if $area eq '' or $trole eq '';
5137:
5138: my $spec = "$trole.$area";
5139: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5140:
5141: if ($trole =~ /^cr\//) {
5142: # Custom role, defined by a user
5143: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5144: } elsif ($trole eq 'gr') {
5145: # Role of a member in a group, defined within a course/community
5146: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5147: next;
5148: } else {
5149: # Normal role, defined in roles.tab
5150: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5151: }
5152:
5153: my $cid = $tdomain.'_'.$trest;
5154: unless ($firstaccchk{$cid}) {
5155: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5156: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5157: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5158: $coursetimerstarts{$cid}{$item};
5159: }
5160: }
5161: $firstaccchk{$cid} = 1;
5162: }
5163: unless ($timerintchk{$cid}) {
5164: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5165: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5166: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5167: $coursetimerintervals{$cid}{$item};
5168: }
5169: }
5170: $timerintchk{$cid} = 1;
5171: }
5172: }
5173:
5174: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5175: \%allroles, \%allgroups);
5176: $env{'user.adv'} = $userroles{'user.adv'};
5177:
5178: return (\%userroles,\%firstaccenv,\%timerintenv);
5179: }
5180:
5181: sub set_arearole {
5182: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5183: unless ($nolog) {
5184: # log the associated role with the area
5185: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5186: }
5187: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5188: }
5189:
5190: sub custom_roleprivs {
5191: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5192: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5193: my $homsvr=homeserver($rauthor,$rdomain);
5194: if (&hostname($homsvr) ne '') {
5195: my ($rdummy,$roledef)=
5196: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5197: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5198: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5199: if (defined($syspriv)) {
5200: if ($trest =~ /^$match_community$/) {
5201: $syspriv =~ s/bre\&S//;
5202: }
5203: $$allroles{'cm./'}.=':'.$syspriv;
5204: $$allroles{$spec.'./'}.=':'.$syspriv;
5205: }
5206: if ($tdomain ne '') {
5207: if (defined($dompriv)) {
5208: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5209: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5210: }
5211: if (($trest ne '') && (defined($coursepriv))) {
5212: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5213: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5214: }
5215: }
5216: }
5217: }
5218: }
5219:
5220: sub group_roleprivs {
5221: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5222: my $access = 1;
5223: my $now = time;
5224: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5225: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5226: if ($access) {
5227: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5228: $$allgroups{$course}{$group} .=':'.$group_privs;
5229: }
5230: }
5231:
5232: sub standard_roleprivs {
5233: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5234: if (defined($pr{$trole.':s'})) {
5235: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5236: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5237: }
5238: if ($tdomain ne '') {
5239: if (defined($pr{$trole.':d'})) {
5240: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5241: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5242: }
5243: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5244: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5245: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5246: }
5247: }
5248: }
5249:
5250: sub set_userprivs {
5251: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5252: my $author=0;
5253: my $adv=0;
5254: my %grouproles = ();
5255: if (keys(%{$allgroups}) > 0) {
5256: my @groupkeys;
5257: foreach my $role (keys(%{$allroles})) {
5258: push(@groupkeys,$role);
5259: }
5260: if (ref($groups_roles) eq 'HASH') {
5261: foreach my $key (keys(%{$groups_roles})) {
5262: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5263: push(@groupkeys,$key);
5264: }
5265: }
5266: }
5267: if (@groupkeys > 0) {
5268: foreach my $role (@groupkeys) {
5269: my ($trole,$area,$sec,$extendedarea);
5270: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5271: $trole = $1;
5272: $area = $2;
5273: $sec = $3;
5274: $extendedarea = $area.$sec;
5275: if (exists($$allgroups{$area})) {
5276: foreach my $group (keys(%{$$allgroups{$area}})) {
5277: my $spec = $trole.'.'.$extendedarea;
5278: $grouproles{$spec.'.'.$area.'/'.$group} =
5279: $$allgroups{$area}{$group};
5280: }
5281: }
5282: }
5283: }
5284: }
5285: }
5286: foreach my $group (keys(%grouproles)) {
5287: $$allroles{$group} = $grouproles{$group};
5288: }
5289: foreach my $role (keys(%{$allroles})) {
5290: my %thesepriv;
5291: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5292: foreach my $item (split(/:/,$$allroles{$role})) {
5293: if ($item ne '') {
5294: my ($privilege,$restrictions)=split(/&/,$item);
5295: if ($restrictions eq '') {
5296: $thesepriv{$privilege}='F';
5297: } elsif ($thesepriv{$privilege} ne 'F') {
5298: $thesepriv{$privilege}.=$restrictions;
5299: }
5300: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5301: }
5302: }
5303: my $thesestr='';
5304: foreach my $priv (sort(keys(%thesepriv))) {
5305: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5306: }
5307: $userroles->{'user.priv.'.$role} = $thesestr;
5308: }
5309: return ($author,$adv);
5310: }
5311:
5312: sub role_status {
5313: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5314: my @pwhere = ();
5315: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5316: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5317: unless (!defined($$role) || $$role eq '') {
5318: $$where=join('.',@pwhere);
5319: $$trolecode=$$role.'.'.$$where;
5320: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5321: $$tstatus='is';
5322: if ($$tstart && $$tstart>$update) {
5323: $$tstatus='future';
5324: if ($$tstart<$now) {
5325: if ($$tstart && $$tstart>$refresh) {
5326: if (($$where ne '') && ($$role ne '')) {
5327: my (%allroles,%allgroups,$group_privs,
5328: %groups_roles,@rolecodes);
5329: my %userroles = (
5330: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5331: );
5332: @rolecodes = ('cm');
5333: my $spec=$$role.'.'.$$where;
5334: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5335: if ($$role =~ /^cr\//) {
5336: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5337: push(@rolecodes,'cr');
5338: } elsif ($$role eq 'gr') {
5339: push(@rolecodes,$$role);
5340: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5341: $env{'user.name'});
5342: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5343: (undef,my $group_privs) = split(/\//,$trole);
5344: $group_privs = &unescape($group_privs);
5345: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5346: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5347: &get_groups_roles($tdomain,$trest,
5348: \%course_roles,\@rolecodes,
5349: \%groups_roles);
5350: } else {
5351: push(@rolecodes,$$role);
5352: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5353: }
5354: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5355: &appenv(\%userroles,\@rolecodes);
5356: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5357: }
5358: }
5359: $$tstatus = 'is';
5360: }
5361: }
5362: if ($$tend) {
5363: if ($$tend<$update) {
5364: $$tstatus='expired';
5365: } elsif ($$tend<$now) {
5366: $$tstatus='will_not';
5367: }
5368: }
5369: }
5370: }
5371: }
5372:
5373: sub get_groups_roles {
5374: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5375: return unless((ref($cdom_courseroles) eq 'HASH') &&
5376: (ref($rolecodes) eq 'ARRAY') &&
5377: (ref($groups_roles) eq 'HASH'));
5378: if (keys(%{$cdom_courseroles}) > 0) {
5379: my ($cnum) = ($rest =~ /^($match_courseid)/);
5380: if ($cdom ne '' && $cnum ne '') {
5381: foreach my $key (keys(%{$cdom_courseroles})) {
5382: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5383: my $crsrole = $1;
5384: my $crssec = $2;
5385: if ($crsrole =~ /^cr/) {
5386: unless (grep(/^cr$/,@{$rolecodes})) {
5387: push(@{$rolecodes},'cr');
5388: }
5389: } else {
5390: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5391: push(@{$rolecodes},$crsrole);
5392: }
5393: }
5394: my $rolekey = "$crsrole./$cdom/$cnum";
5395: if ($crssec ne '') {
5396: $rolekey .= "/$crssec";
5397: }
5398: $rolekey .= './';
5399: $groups_roles->{$rolekey} = $rolecodes;
5400: }
5401: }
5402: }
5403: }
5404: return;
5405: }
5406:
5407: sub delete_env_groupprivs {
5408: my ($where,$courseroles,$possroles) = @_;
5409: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5410: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5411: unless (ref($courseroles->{$udom}) eq 'HASH') {
5412: %{$courseroles->{$udom}} =
5413: &get_my_roles('','','userroles',['active'],
5414: $possroles,[$udom],1);
5415: }
5416: if (ref($courseroles->{$udom}) eq 'HASH') {
5417: foreach my $item (keys(%{$courseroles->{$udom}})) {
5418: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5419: my $area = '/'.$cdom.'/'.$cnum;
5420: my $privkey = "user.priv.$crsrole.$area";
5421: if ($crssec ne '') {
5422: $privkey .= '/'.$crssec;
5423: }
5424: $privkey .= ".$area/$group";
5425: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5426: }
5427: }
5428: return;
5429: }
5430:
5431: sub check_adhoc_privs {
5432: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5433: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5434: my $setprivs;
5435: if ($env{$cckey}) {
5436: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5437: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5438: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5439: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5440: $setprivs = 1;
5441: }
5442: } else {
5443: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5444: $setprivs = 1;
5445: }
5446: return $setprivs;
5447: }
5448:
5449: sub set_adhoc_privileges {
5450: # role can be cc or ca
5451: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5452: my $area = '/'.$dcdom.'/'.$pickedcourse;
5453: my $spec = $role.'.'.$area;
5454: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5455: $env{'user.name'},1);
5456: my %ccrole = ();
5457: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5458: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5459: &appenv(\%userroles,[$role,'cm']);
5460: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5461: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5462: &appenv( {'request.role' => $spec,
5463: 'request.role.domain' => $dcdom,
5464: 'request.course.sec' => ''
5465: }
5466: );
5467: my $tadv=0;
5468: if (&allowed('adv') eq 'F') { $tadv=1; }
5469: &appenv({'request.role.adv' => $tadv});
5470: }
5471: }
5472:
5473: # --------------------------------------------------------------- get interface
5474:
5475: sub get {
5476: my ($namespace,$storearr,$udomain,$uname)=@_;
5477: my $items='';
5478: foreach my $item (@$storearr) {
5479: $items.=&escape($item).'&';
5480: }
5481: $items=~s/\&$//;
5482: if (!$udomain) { $udomain=$env{'user.domain'}; }
5483: if (!$uname) { $uname=$env{'user.name'}; }
5484: my $uhome=&homeserver($uname,$udomain);
5485:
5486: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5487: my @pairs=split(/\&/,$rep);
5488: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5489: return @pairs;
5490: }
5491: my %returnhash=();
5492: my $i=0;
5493: foreach my $item (@$storearr) {
5494: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5495: $i++;
5496: }
5497: return %returnhash;
5498: }
5499:
5500: # --------------------------------------------------------------- del interface
5501:
5502: sub del {
5503: my ($namespace,$storearr,$udomain,$uname)=@_;
5504: my $items='';
5505: foreach my $item (@$storearr) {
5506: $items.=&escape($item).'&';
5507: }
5508:
5509: $items=~s/\&$//;
5510: if (!$udomain) { $udomain=$env{'user.domain'}; }
5511: if (!$uname) { $uname=$env{'user.name'}; }
5512: my $uhome=&homeserver($uname,$udomain);
5513: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5514: }
5515:
5516: # -------------------------------------------------------------- dump interface
5517:
5518: sub unserialize {
5519: my ($rep, $escapedkeys) = @_;
5520:
5521: return {} if $rep =~ /^error/;
5522:
5523: my %returnhash=();
5524: foreach my $item (split /\&/, $rep) {
5525: my ($key, $value) = split(/=/, $item, 2);
5526: $key = unescape($key) unless $escapedkeys;
5527: next if $key =~ /^error: 2 /;
5528: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5529: }
5530: #return %returnhash;
5531: return \%returnhash;
5532: }
5533:
5534: # see Lond::dump_with_regexp
5535: # if $escapedkeys hash keys won't get unescaped.
5536: sub dump {
5537: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5538: if (!$udomain) { $udomain=$env{'user.domain'}; }
5539: if (!$uname) { $uname=$env{'user.name'}; }
5540: my $uhome=&homeserver($uname,$udomain);
5541:
5542: my $reply;
5543: if (grep { $_ eq $uhome } current_machine_ids()) {
5544: # user is hosted on this machine
5545: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5546: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5547: return %{unserialize($reply, $escapedkeys)};
5548: }
5549: if ($regexp) {
5550: $regexp=&escape($regexp);
5551: } else {
5552: $regexp='.';
5553: }
5554: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5555: my @pairs=split(/\&/,$rep);
5556: my %returnhash=();
5557: if (!($rep =~ /^error/ )) {
5558: foreach my $item (@pairs) {
5559: my ($key,$value)=split(/=/,$item,2);
5560: $key = unescape($key) unless $escapedkeys;
5561: #$key = &unescape($key);
5562: next if ($key =~ /^error: 2 /);
5563: $returnhash{$key}=&thaw_unescape($value);
5564: }
5565: }
5566: return %returnhash;
5567: }
5568:
5569:
5570: # --------------------------------------------------------- dumpstore interface
5571:
5572: sub dumpstore {
5573: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5574: # same as dump but keys must be escaped. They may contain colon separated
5575: # lists of values that may themself contain colons (e.g. symbs).
5576: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5577: }
5578:
5579: # -------------------------------------------------------------- keys interface
5580:
5581: sub getkeys {
5582: my ($namespace,$udomain,$uname)=@_;
5583: if (!$udomain) { $udomain=$env{'user.domain'}; }
5584: if (!$uname) { $uname=$env{'user.name'}; }
5585: my $uhome=&homeserver($uname,$udomain);
5586: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5587: my @keyarray=();
5588: foreach my $key (split(/\&/,$rep)) {
5589: next if ($key =~ /^error: 2 /);
5590: push(@keyarray,&unescape($key));
5591: }
5592: return @keyarray;
5593: }
5594:
5595: # --------------------------------------------------------------- currentdump
5596: sub currentdump {
5597: my ($courseid,$sdom,$sname)=@_;
5598: $courseid = $env{'request.course.id'} if (! defined($courseid));
5599: $sdom = $env{'user.domain'} if (! defined($sdom));
5600: $sname = $env{'user.name'} if (! defined($sname));
5601: my $uhome = &homeserver($sname,$sdom);
5602: my $rep;
5603:
5604: if (grep { $_ eq $uhome } current_machine_ids()) {
5605: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5606: $courseid)));
5607: } else {
5608: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5609: }
5610:
5611: return if ($rep =~ /^(error:|no_such_host)/);
5612: #
5613: my %returnhash=();
5614: #
5615: if ($rep eq "unknown_cmd") {
5616: # an old lond will not know currentdump
5617: # Do a dump and make it look like a currentdump
5618: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5619: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5620: my %hash = @tmp;
5621: @tmp=();
5622: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5623: } else {
5624: my @pairs=split(/\&/,$rep);
5625: foreach my $pair (@pairs) {
5626: my ($key,$value)=split(/=/,$pair,2);
5627: my ($symb,$param) = split(/:/,$key);
5628: $returnhash{&unescape($symb)}->{&unescape($param)} =
5629: &thaw_unescape($value);
5630: }
5631: }
5632: return %returnhash;
5633: }
5634:
5635: sub convert_dump_to_currentdump{
5636: my %hash = %{shift()};
5637: my %returnhash;
5638: # Code ripped from lond, essentially. The only difference
5639: # here is the unescaping done by lonnet::dump(). Conceivably
5640: # we might run in to problems with parameter names =~ /^v\./
5641: while (my ($key,$value) = each(%hash)) {
5642: my ($v,$symb,$param) = split(/:/,$key);
5643: $symb = &unescape($symb);
5644: $param = &unescape($param);
5645: next if ($v eq 'version' || $symb eq 'keys');
5646: next if (exists($returnhash{$symb}) &&
5647: exists($returnhash{$symb}->{$param}) &&
5648: $returnhash{$symb}->{'v.'.$param} > $v);
5649: $returnhash{$symb}->{$param}=$value;
5650: $returnhash{$symb}->{'v.'.$param}=$v;
5651: }
5652: #
5653: # Remove all of the keys in the hashes which keep track of
5654: # the version of the parameter.
5655: while (my ($symb,$param_hash) = each(%returnhash)) {
5656: # use a foreach because we are going to delete from the hash.
5657: foreach my $key (keys(%$param_hash)) {
5658: delete($param_hash->{$key}) if ($key =~ /^v\./);
5659: }
5660: }
5661: return \%returnhash;
5662: }
5663:
5664: # ------------------------------------------------------ critical inc interface
5665:
5666: sub cinc {
5667: return &inc(@_,'critical');
5668: }
5669:
5670: # --------------------------------------------------------------- inc interface
5671:
5672: sub inc {
5673: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5674: if (!$udomain) { $udomain=$env{'user.domain'}; }
5675: if (!$uname) { $uname=$env{'user.name'}; }
5676: my $uhome=&homeserver($uname,$udomain);
5677: my $items='';
5678: if (! ref($store)) {
5679: # got a single value, so use that instead
5680: $items = &escape($store).'=&';
5681: } elsif (ref($store) eq 'SCALAR') {
5682: $items = &escape($$store).'=&';
5683: } elsif (ref($store) eq 'ARRAY') {
5684: $items = join('=&',map {&escape($_);} @{$store});
5685: } elsif (ref($store) eq 'HASH') {
5686: while (my($key,$value) = each(%{$store})) {
5687: $items.= &escape($key).'='.&escape($value).'&';
5688: }
5689: }
5690: $items=~s/\&$//;
5691: if ($critical) {
5692: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5693: } else {
5694: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5695: }
5696: }
5697:
5698: # --------------------------------------------------------------- put interface
5699:
5700: sub put {
5701: my ($namespace,$storehash,$udomain,$uname)=@_;
5702: if (!$udomain) { $udomain=$env{'user.domain'}; }
5703: if (!$uname) { $uname=$env{'user.name'}; }
5704: my $uhome=&homeserver($uname,$udomain);
5705: my $items='';
5706: foreach my $item (keys(%$storehash)) {
5707: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5708: }
5709: $items=~s/\&$//;
5710: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5711: }
5712:
5713: # ------------------------------------------------------------ newput interface
5714:
5715: sub newput {
5716: my ($namespace,$storehash,$udomain,$uname)=@_;
5717: if (!$udomain) { $udomain=$env{'user.domain'}; }
5718: if (!$uname) { $uname=$env{'user.name'}; }
5719: my $uhome=&homeserver($uname,$udomain);
5720: my $items='';
5721: foreach my $key (keys(%$storehash)) {
5722: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5723: }
5724: $items=~s/\&$//;
5725: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5726: }
5727:
5728: # --------------------------------------------------------- putstore interface
5729:
5730: sub putstore {
5731: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5732: if (!$udomain) { $udomain=$env{'user.domain'}; }
5733: if (!$uname) { $uname=$env{'user.name'}; }
5734: my $uhome=&homeserver($uname,$udomain);
5735: my $items='';
5736: foreach my $key (keys(%$storehash)) {
5737: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5738: }
5739: $items=~s/\&$//;
5740: my $esc_symb=&escape($symb);
5741: my $esc_v=&escape($version);
5742: my $reply =
5743: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5744: $uhome);
5745: if ($reply eq 'unknown_cmd') {
5746: # gfall back to way things use to be done
5747: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5748: $uname);
5749: }
5750: return $reply;
5751: }
5752:
5753: sub old_putstore {
5754: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5755: if (!$udomain) { $udomain=$env{'user.domain'}; }
5756: if (!$uname) { $uname=$env{'user.name'}; }
5757: my $uhome=&homeserver($uname,$udomain);
5758: my %newstorehash;
5759: foreach my $item (keys(%$storehash)) {
5760: my $key = $version.':'.&escape($symb).':'.$item;
5761: $newstorehash{$key} = $storehash->{$item};
5762: }
5763: my $items='';
5764: my %allitems = ();
5765: foreach my $item (keys(%newstorehash)) {
5766: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5767: my $key = $1.':keys:'.$2;
5768: $allitems{$key} .= $3.':';
5769: }
5770: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5771: }
5772: foreach my $item (keys(%allitems)) {
5773: $allitems{$item} =~ s/\:$//;
5774: $items.= $item.'='.$allitems{$item}.'&';
5775: }
5776: $items=~s/\&$//;
5777: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5778: }
5779:
5780: # ------------------------------------------------------ critical put interface
5781:
5782: sub cput {
5783: my ($namespace,$storehash,$udomain,$uname)=@_;
5784: if (!$udomain) { $udomain=$env{'user.domain'}; }
5785: if (!$uname) { $uname=$env{'user.name'}; }
5786: my $uhome=&homeserver($uname,$udomain);
5787: my $items='';
5788: foreach my $item (keys(%$storehash)) {
5789: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5790: }
5791: $items=~s/\&$//;
5792: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5793: }
5794:
5795: # -------------------------------------------------------------- eget interface
5796:
5797: sub eget {
5798: my ($namespace,$storearr,$udomain,$uname)=@_;
5799: my $items='';
5800: foreach my $item (@$storearr) {
5801: $items.=&escape($item).'&';
5802: }
5803: $items=~s/\&$//;
5804: if (!$udomain) { $udomain=$env{'user.domain'}; }
5805: if (!$uname) { $uname=$env{'user.name'}; }
5806: my $uhome=&homeserver($uname,$udomain);
5807: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5808: my @pairs=split(/\&/,$rep);
5809: my %returnhash=();
5810: my $i=0;
5811: foreach my $item (@$storearr) {
5812: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5813: $i++;
5814: }
5815: return %returnhash;
5816: }
5817:
5818: # ------------------------------------------------------------ tmpput interface
5819: sub tmpput {
5820: my ($storehash,$server,$context)=@_;
5821: my $items='';
5822: foreach my $item (keys(%$storehash)) {
5823: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5824: }
5825: $items=~s/\&$//;
5826: if (defined($context)) {
5827: $items .= ':'.&escape($context);
5828: }
5829: return &reply("tmpput:$items",$server);
5830: }
5831:
5832: # ------------------------------------------------------------ tmpget interface
5833: sub tmpget {
5834: my ($token,$server)=@_;
5835: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5836: my $rep=&reply("tmpget:$token",$server);
5837: my %returnhash;
5838: foreach my $item (split(/\&/,$rep)) {
5839: my ($key,$value)=split(/=/,$item);
5840: next if ($key =~ /^error: 2 /);
5841: $returnhash{&unescape($key)}=&thaw_unescape($value);
5842: }
5843: return %returnhash;
5844: }
5845:
5846: # ------------------------------------------------------------ tmpdel interface
5847: sub tmpdel {
5848: my ($token,$server)=@_;
5849: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5850: return &reply("tmpdel:$token",$server);
5851: }
5852:
5853: # ------------------------------------------------------------ get_timebased_id
5854:
5855: sub get_timebased_id {
5856: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5857: $maxtries) = @_;
5858: my ($newid,$error,$dellock);
5859: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5860: return ('','ok','invalid call to get suffix');
5861: }
5862:
5863: # set defaults for any optional args for which values were not supplied
5864: if ($who eq '') {
5865: $who = $env{'user.name'}.':'.$env{'user.domain'};
5866: }
5867: if (!$locktries) {
5868: $locktries = 3;
5869: }
5870: if (!$maxtries) {
5871: $maxtries = 10;
5872: }
5873:
5874: if (($cdom eq '') || ($cnum eq '')) {
5875: if ($env{'request.course.id'}) {
5876: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5877: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5878: }
5879: if (($cdom eq '') || ($cnum eq '')) {
5880: return ('','ok','call to get suffix not in course context');
5881: }
5882: }
5883:
5884: # construct locking item
5885: my $lockhash = {
5886: $prefix."\0".'locked_'.$keyid => $who,
5887: };
5888: my $tries = 0;
5889:
5890: # attempt to get lock on nohist_$namespace file
5891: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5892: while (($gotlock ne 'ok') && $tries <$locktries) {
5893: $tries ++;
5894: sleep 1;
5895: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5896: }
5897:
5898: # attempt to get unique identifier, based on current timestamp
5899: if ($gotlock eq 'ok') {
5900: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
5901: my $id = time;
5902: $newid = $id;
5903: my $idtries = 0;
5904: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
5905: if ($idtype eq 'concat') {
5906: $newid = $id.$idtries;
5907: } else {
5908: $newid ++;
5909: }
5910: $idtries ++;
5911: }
5912: if (!exists($inuse{$prefix."\0".$newid})) {
5913: my %new_item = (
5914: $prefix."\0".$newid => $who,
5915: );
5916: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
5917: $cdom,$cnum);
5918: if ($putresult ne 'ok') {
5919: undef($newid);
5920: $error = 'error saving new item: '.$putresult;
5921: }
5922: } else {
5923: $error = ('error: no unique suffix available for the new item ');
5924: }
5925: # remove lock
5926: my @del_lock = ($prefix."\0".'locked_'.$keyid);
5927: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
5928: } else {
5929: $error = "error: could not obtain lockfile\n";
5930: $dellock = 'ok';
5931: }
5932: return ($newid,$dellock,$error);
5933: }
5934:
5935: # -------------------------------------------------- portfolio access checking
5936:
5937: sub portfolio_access {
5938: my ($requrl) = @_;
5939: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5940: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5941: if ($result) {
5942: my %setters;
5943: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5944: my ($startblock,$endblock) =
5945: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5946: if ($startblock && $endblock) {
5947: return 'B';
5948: }
5949: } else {
5950: my ($startblock,$endblock) =
5951: &Apache::loncommon::blockcheck(\%setters,'port');
5952: if ($startblock && $endblock) {
5953: return 'B';
5954: }
5955: }
5956: }
5957: if ($result eq 'ok') {
5958: return 'F';
5959: } elsif ($result =~ /^[^:]+:guest_/) {
5960: return 'A';
5961: }
5962: return '';
5963: }
5964:
5965: sub get_portfolio_access {
5966: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5967:
5968: if (!ref($access_hash)) {
5969: my $current_perms = &get_portfile_permissions($udom,$unum);
5970: my %access_controls = &get_access_controls($current_perms,$group,
5971: $file_name);
5972: $access_hash = $access_controls{$file_name};
5973: }
5974:
5975: my ($public,$guest,@domains,@users,@courses,@groups);
5976: my $now = time;
5977: if (ref($access_hash) eq 'HASH') {
5978: foreach my $key (keys(%{$access_hash})) {
5979: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5980: if ($start > $now) {
5981: next;
5982: }
5983: if ($end && $end<$now) {
5984: next;
5985: }
5986: if ($scope eq 'public') {
5987: $public = $key;
5988: last;
5989: } elsif ($scope eq 'guest') {
5990: $guest = $key;
5991: } elsif ($scope eq 'domains') {
5992: push(@domains,$key);
5993: } elsif ($scope eq 'users') {
5994: push(@users,$key);
5995: } elsif ($scope eq 'course') {
5996: push(@courses,$key);
5997: } elsif ($scope eq 'group') {
5998: push(@groups,$key);
5999: }
6000: }
6001: if ($public) {
6002: return 'ok';
6003: }
6004: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6005: if ($guest) {
6006: return $guest;
6007: }
6008: } else {
6009: if (@domains > 0) {
6010: foreach my $domkey (@domains) {
6011: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6012: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6013: return 'ok';
6014: }
6015: }
6016: }
6017: }
6018: if (@users > 0) {
6019: foreach my $userkey (@users) {
6020: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6021: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6022: if (ref($item) eq 'HASH') {
6023: if (($item->{'uname'} eq $env{'user.name'}) &&
6024: ($item->{'udom'} eq $env{'user.domain'})) {
6025: return 'ok';
6026: }
6027: }
6028: }
6029: }
6030: }
6031: }
6032: my %roleshash;
6033: my @courses_and_groups = @courses;
6034: push(@courses_and_groups,@groups);
6035: if (@courses_and_groups > 0) {
6036: my (%allgroups,%allroles);
6037: my ($start,$end,$role,$sec,$group);
6038: foreach my $envkey (%env) {
6039: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6040: my $cid = $2.'_'.$3;
6041: if ($1 eq 'gr') {
6042: $group = $4;
6043: $allgroups{$cid}{$group} = $env{$envkey};
6044: } else {
6045: if ($4 eq '') {
6046: $sec = 'none';
6047: } else {
6048: $sec = $4;
6049: }
6050: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6051: }
6052: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6053: my $cid = $2.'_'.$3;
6054: if ($4 eq '') {
6055: $sec = 'none';
6056: } else {
6057: $sec = $4;
6058: }
6059: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6060: }
6061: }
6062: if (keys(%allroles) == 0) {
6063: return;
6064: }
6065: foreach my $key (@courses_and_groups) {
6066: my %content = %{$$access_hash{$key}};
6067: my $cnum = $content{'number'};
6068: my $cdom = $content{'domain'};
6069: my $cid = $cdom.'_'.$cnum;
6070: if (!exists($allroles{$cid})) {
6071: next;
6072: }
6073: foreach my $role_id (keys(%{$content{'roles'}})) {
6074: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6075: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6076: my @status = @{$content{'roles'}{$role_id}{'access'}};
6077: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6078: foreach my $role (keys(%{$allroles{$cid}})) {
6079: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6080: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6081: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6082: if (grep/^all$/,@sections) {
6083: return 'ok';
6084: } else {
6085: if (grep/^$sec$/,@sections) {
6086: return 'ok';
6087: }
6088: }
6089: }
6090: }
6091: if (keys(%{$allgroups{$cid}}) == 0) {
6092: if (grep/^none$/,@groups) {
6093: return 'ok';
6094: }
6095: } else {
6096: if (grep/^all$/,@groups) {
6097: return 'ok';
6098: }
6099: foreach my $group (keys(%{$allgroups{$cid}})) {
6100: if (grep/^$group$/,@groups) {
6101: return 'ok';
6102: }
6103: }
6104: }
6105: }
6106: }
6107: }
6108: }
6109: }
6110: if ($guest) {
6111: return $guest;
6112: }
6113: }
6114: }
6115: return;
6116: }
6117:
6118: sub course_group_datechecker {
6119: my ($dates,$now,$status) = @_;
6120: my ($start,$end) = split(/\./,$dates);
6121: if (!$start && !$end) {
6122: return 'ok';
6123: }
6124: if (grep/^active$/,@{$status}) {
6125: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6126: return 'ok';
6127: }
6128: }
6129: if (grep/^previous$/,@{$status}) {
6130: if ($end > $now ) {
6131: return 'ok';
6132: }
6133: }
6134: if (grep/^future$/,@{$status}) {
6135: if ($start > $now) {
6136: return 'ok';
6137: }
6138: }
6139: return;
6140: }
6141:
6142: sub parse_portfolio_url {
6143: my ($url) = @_;
6144:
6145: my ($type,$udom,$unum,$group,$file_name);
6146:
6147: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6148: $type = 1;
6149: $udom = $1;
6150: $unum = $2;
6151: $file_name = $3;
6152: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6153: $type = 2;
6154: $udom = $1;
6155: $unum = $2;
6156: $group = $3;
6157: $file_name = $3.'/'.$4;
6158: }
6159: if (wantarray) {
6160: return ($type,$udom,$unum,$file_name,$group);
6161: }
6162: return $type;
6163: }
6164:
6165: sub is_portfolio_url {
6166: my ($url) = @_;
6167: return scalar(&parse_portfolio_url($url));
6168: }
6169:
6170: sub is_portfolio_file {
6171: my ($file) = @_;
6172: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6173: return 1;
6174: }
6175: return;
6176: }
6177:
6178: sub usertools_access {
6179: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6180: my ($access,%tools);
6181: if ($context eq '') {
6182: $context = 'tools';
6183: }
6184: if ($context eq 'requestcourses') {
6185: %tools = (
6186: official => 1,
6187: unofficial => 1,
6188: community => 1,
6189: );
6190: } elsif ($context eq 'requestauthor') {
6191: %tools = (
6192: requestauthor => 1,
6193: );
6194: } else {
6195: %tools = (
6196: aboutme => 1,
6197: blog => 1,
6198: webdav => 1,
6199: portfolio => 1,
6200: );
6201: }
6202: return if (!defined($tools{$tool}));
6203:
6204: if ((!defined($udom)) || (!defined($uname))) {
6205: $udom = $env{'user.domain'};
6206: $uname = $env{'user.name'};
6207: }
6208:
6209: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6210: if ($action ne 'reload') {
6211: if ($context eq 'requestcourses') {
6212: return $env{'environment.canrequest.'.$tool};
6213: } elsif ($context eq 'requestauthor') {
6214: return $env{'environment.canrequest.author'};
6215: } else {
6216: return $env{'environment.availabletools.'.$tool};
6217: }
6218: }
6219: }
6220:
6221: my ($toolstatus,$inststatus,$envkey);
6222: if ($context eq 'requestauthor') {
6223: $envkey = $context;
6224: } else {
6225: $envkey = $context.'.'.$tool;
6226: }
6227:
6228: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6229: ($action ne 'reload')) {
6230: $toolstatus = $env{'environment.'.$envkey};
6231: $inststatus = $env{'environment.inststatus'};
6232: } else {
6233: if (ref($userenvref) eq 'HASH') {
6234: $toolstatus = $userenvref->{$envkey};
6235: $inststatus = $userenvref->{'inststatus'};
6236: } else {
6237: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6238: $toolstatus = $userenv{$envkey};
6239: $inststatus = $userenv{'inststatus'};
6240: }
6241: }
6242:
6243: if ($toolstatus ne '') {
6244: if ($toolstatus) {
6245: $access = 1;
6246: } else {
6247: $access = 0;
6248: }
6249: return $access;
6250: }
6251:
6252: my ($is_adv,%domdef);
6253: if (ref($is_advref) eq 'HASH') {
6254: $is_adv = $is_advref->{'is_adv'};
6255: } else {
6256: $is_adv = &is_advanced_user($udom,$uname);
6257: }
6258: if (ref($domdefref) eq 'HASH') {
6259: %domdef = %{$domdefref};
6260: } else {
6261: %domdef = &get_domain_defaults($udom);
6262: }
6263: if (ref($domdef{$tool}) eq 'HASH') {
6264: if ($is_adv) {
6265: if ($domdef{$tool}{'_LC_adv'} ne '') {
6266: if ($domdef{$tool}{'_LC_adv'}) {
6267: $access = 1;
6268: } else {
6269: $access = 0;
6270: }
6271: return $access;
6272: }
6273: }
6274: if ($inststatus ne '') {
6275: my ($hasaccess,$hasnoaccess);
6276: foreach my $affiliation (split(/:/,$inststatus)) {
6277: if ($domdef{$tool}{$affiliation} ne '') {
6278: if ($domdef{$tool}{$affiliation}) {
6279: $hasaccess = 1;
6280: } else {
6281: $hasnoaccess = 1;
6282: }
6283: }
6284: }
6285: if ($hasaccess || $hasnoaccess) {
6286: if ($hasaccess) {
6287: $access = 1;
6288: } elsif ($hasnoaccess) {
6289: $access = 0;
6290: }
6291: return $access;
6292: }
6293: } else {
6294: if ($domdef{$tool}{'default'} ne '') {
6295: if ($domdef{$tool}{'default'}) {
6296: $access = 1;
6297: } elsif ($domdef{$tool}{'default'} == 0) {
6298: $access = 0;
6299: }
6300: return $access;
6301: }
6302: }
6303: } else {
6304: if (($context eq 'tools') && ($tool ne 'webdav')) {
6305: $access = 1;
6306: } else {
6307: $access = 0;
6308: }
6309: return $access;
6310: }
6311: }
6312:
6313: sub is_course_owner {
6314: my ($cdom,$cnum,$udom,$uname) = @_;
6315: if (($udom eq '') || ($uname eq '')) {
6316: $udom = $env{'user.domain'};
6317: $uname = $env{'user.name'};
6318: }
6319: unless (($udom eq '') || ($uname eq '')) {
6320: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6321: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6322: return 1;
6323: } else {
6324: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6325: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6326: return 1;
6327: }
6328: }
6329: }
6330: }
6331: return;
6332: }
6333:
6334: sub is_advanced_user {
6335: my ($udom,$uname) = @_;
6336: if ($udom ne '' && $uname ne '') {
6337: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6338: if (wantarray) {
6339: return ($env{'user.adv'},$env{'user.author'});
6340: } else {
6341: return $env{'user.adv'};
6342: }
6343: }
6344: }
6345: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6346: my %allroles;
6347: my ($is_adv,$is_author);
6348: foreach my $role (keys(%roleshash)) {
6349: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6350: my $area = '/'.$tdomain.'/'.$trest;
6351: if ($sec ne '') {
6352: $area .= '/'.$sec;
6353: }
6354: if (($area ne '') && ($trole ne '')) {
6355: my $spec=$trole.'.'.$area;
6356: if ($trole =~ /^cr\//) {
6357: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6358: } elsif ($trole ne 'gr') {
6359: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6360: }
6361: if ($trole eq 'au') {
6362: $is_author = 1;
6363: }
6364: }
6365: }
6366: foreach my $role (keys(%allroles)) {
6367: last if ($is_adv);
6368: foreach my $item (split(/:/,$allroles{$role})) {
6369: if ($item ne '') {
6370: my ($privilege,$restrictions)=split(/&/,$item);
6371: if ($privilege eq 'adv') {
6372: $is_adv = 1;
6373: last;
6374: }
6375: }
6376: }
6377: }
6378: if (wantarray) {
6379: return ($is_adv,$is_author);
6380: }
6381: return $is_adv;
6382: }
6383:
6384: sub check_can_request {
6385: my ($dom,$can_request,$request_domains) = @_;
6386: my $canreq = 0;
6387: my ($types,$typename) = &Apache::loncommon::course_types();
6388: my @options = ('approval','validate','autolimit');
6389: my $optregex = join('|',@options);
6390: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6391: foreach my $type (@{$types}) {
6392: if (&usertools_access($env{'user.name'},
6393: $env{'user.domain'},
6394: $type,undef,'requestcourses')) {
6395: $canreq ++;
6396: if (ref($request_domains) eq 'HASH') {
6397: push(@{$request_domains->{$type}},$env{'user.domain'});
6398: }
6399: if ($dom eq $env{'user.domain'}) {
6400: $can_request->{$type} = 1;
6401: }
6402: }
6403: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6404: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6405: if (@curr > 0) {
6406: foreach my $item (@curr) {
6407: if (ref($request_domains) eq 'HASH') {
6408: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6409: if ($otherdom ne '') {
6410: if (ref($request_domains->{$type}) eq 'ARRAY') {
6411: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6412: push(@{$request_domains->{$type}},$otherdom);
6413: }
6414: } else {
6415: push(@{$request_domains->{$type}},$otherdom);
6416: }
6417: }
6418: }
6419: }
6420: unless($dom eq $env{'user.domain'}) {
6421: $canreq ++;
6422: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6423: $can_request->{$type} = 1;
6424: }
6425: }
6426: }
6427: }
6428: }
6429: }
6430: return $canreq;
6431: }
6432:
6433: # ---------------------------------------------- Custom access rule evaluation
6434:
6435: sub customaccess {
6436: my ($priv,$uri)=@_;
6437: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6438: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6439: $udom = &LONCAPA::clean_domain($udom);
6440: $ucrs = &LONCAPA::clean_username($ucrs);
6441: my $access=0;
6442: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6443: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6444: if ($type eq 'user') {
6445: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6446: my ($tdom,$tuname)=split(m{/},$scope);
6447: if ($tdom) {
6448: if ($tdom ne $env{'user.domain'}) { next; }
6449: }
6450: if ($tuname) {
6451: if ($tuname ne $env{'user.name'}) { next; }
6452: }
6453: $access=($effect eq 'allow');
6454: last;
6455: }
6456: } else {
6457: if ($role) {
6458: if ($role ne $urole) { next; }
6459: }
6460: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6461: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6462: if ($tdom) {
6463: if ($tdom ne $udom) { next; }
6464: }
6465: if ($tcrs) {
6466: if ($tcrs ne $ucrs) { next; }
6467: }
6468: if ($tsec) {
6469: if ($tsec ne $usec) { next; }
6470: }
6471: $access=($effect eq 'allow');
6472: last;
6473: }
6474: if ($realm eq '' && $role eq '') {
6475: $access=($effect eq 'allow');
6476: }
6477: }
6478: }
6479: return $access;
6480: }
6481:
6482: # ------------------------------------------------- Check for a user privilege
6483:
6484: sub allowed {
6485: my ($priv,$uri,$symb,$role)=@_;
6486: my $ver_orguri=$uri;
6487: $uri=&deversion($uri);
6488: my $orguri=$uri;
6489: $uri=&declutter($uri);
6490:
6491: if ($priv eq 'evb') {
6492: # Evade communication block restrictions for specified role in a course
6493: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6494: return $1;
6495: } else {
6496: return;
6497: }
6498: }
6499:
6500: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6501: # Free bre access to adm and meta resources
6502: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6503: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6504: && ($priv eq 'bre')) {
6505: return 'F';
6506: }
6507:
6508: # Free bre access to user's own portfolio contents
6509: my ($space,$domain,$name,@dir)=split('/',$uri);
6510: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6511: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6512: my %setters;
6513: my ($startblock,$endblock) =
6514: &Apache::loncommon::blockcheck(\%setters,'port');
6515: if ($startblock && $endblock) {
6516: return 'B';
6517: } else {
6518: return 'F';
6519: }
6520: }
6521:
6522: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6523: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6524: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6525: if (exists($env{'request.course.id'})) {
6526: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6527: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6528: if (($domain eq $cdom) && ($name eq $cnum)) {
6529: my $courseprivid=$env{'request.course.id'};
6530: $courseprivid=~s/\_/\//;
6531: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6532: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6533: return $1;
6534: } else {
6535: if ($env{'request.course.sec'}) {
6536: $courseprivid.='/'.$env{'request.course.sec'};
6537: }
6538: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6539: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6540: return $2;
6541: }
6542: }
6543: }
6544: }
6545: }
6546:
6547: # Free bre to public access
6548:
6549: if ($priv eq 'bre') {
6550: my $copyright=&metadata($uri,'copyright');
6551: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6552: return 'F';
6553: }
6554: if ($copyright eq 'priv') {
6555: $uri=~/([^\/]+)\/([^\/]+)\//;
6556: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6557: return '';
6558: }
6559: }
6560: if ($copyright eq 'domain') {
6561: $uri=~/([^\/]+)\/([^\/]+)\//;
6562: unless (($env{'user.domain'} eq $1) ||
6563: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6564: return '';
6565: }
6566: }
6567: if ($env{'request.role'}=~ /li\.\//) {
6568: # Library role, so allow browsing of resources in this domain.
6569: return 'F';
6570: }
6571: if ($copyright eq 'custom') {
6572: unless (&customaccess($priv,$uri)) { return ''; }
6573: }
6574: }
6575: # Domain coordinator is trying to create a course
6576: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6577: # uri is the requested domain in this case.
6578: # comparison to 'request.role.domain' shows if the user has selected
6579: # a role of dc for the domain in question.
6580: return 'F' if ($uri eq $env{'request.role.domain'});
6581: }
6582:
6583: my $thisallowed='';
6584: my $statecond=0;
6585: my $courseprivid='';
6586:
6587: my $ownaccess;
6588: # Community Coordinator or Assistant Co-author browsing resource space.
6589: if (($priv eq 'bro') && ($env{'user.author'})) {
6590: if ($uri eq '') {
6591: $ownaccess = 1;
6592: } else {
6593: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6594: my $udom = $env{'user.domain'};
6595: my $uname = $env{'user.name'};
6596: if ($uri =~ m{^\Q$udom\E/?$}) {
6597: $ownaccess = 1;
6598: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6599: unless ($uri =~ m{\.\./}) {
6600: $ownaccess = 1;
6601: }
6602: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6603: my $now = time;
6604: if ($uri =~ m{^([^/]+)/?$}) {
6605: my $adom = $1;
6606: foreach my $key (keys(%env)) {
6607: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6608: my ($start,$end) = split('.',$env{$key});
6609: if (($now >= $start) && (!$end || $end < $now)) {
6610: $ownaccess = 1;
6611: last;
6612: }
6613: }
6614: }
6615: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6616: my $adom = $1;
6617: my $aname = $2;
6618: foreach my $role ('ca','aa') {
6619: if ($env{"user.role.$role./$adom/$aname"}) {
6620: my ($start,$end) =
6621: split('.',$env{"user.role.$role./$adom/$aname"});
6622: if (($now >= $start) && (!$end || $end < $now)) {
6623: $ownaccess = 1;
6624: last;
6625: }
6626: }
6627: }
6628: }
6629: }
6630: }
6631: }
6632: }
6633:
6634: # Course
6635:
6636: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6637: unless (($priv eq 'bro') && (!$ownaccess)) {
6638: $thisallowed.=$1;
6639: }
6640: }
6641:
6642: # Domain
6643:
6644: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6645: =~/\Q$priv\E\&([^\:]*)/) {
6646: unless (($priv eq 'bro') && (!$ownaccess)) {
6647: $thisallowed.=$1;
6648: }
6649: }
6650:
6651: # User who is not author or co-author might still be able to edit
6652: # resource of an author in the domain (e.g., if Domain Coordinator).
6653: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6654: (&allowed('mdc',$env{'request.course.id'}))) {
6655: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6656: $thisallowed.=$1;
6657: }
6658: }
6659:
6660: # Course: uri itself is a course
6661: my $courseuri=$uri;
6662: $courseuri=~s/\_(\d)/\/$1/;
6663: $courseuri=~s/^([^\/])/\/$1/;
6664:
6665: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6666: =~/\Q$priv\E\&([^\:]*)/) {
6667: unless (($priv eq 'bro') && (!$ownaccess)) {
6668: $thisallowed.=$1;
6669: }
6670: }
6671:
6672: # URI is an uploaded document for this course, default permissions don't matter
6673: # not allowing 'edit' access (editupload) to uploaded course docs
6674: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6675: $thisallowed='';
6676: my ($match)=&is_on_map($uri);
6677: if ($match) {
6678: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6679: =~/\Q$priv\E\&([^\:]*)/) {
6680: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6681: if (@blockers > 0) {
6682: $thisallowed = 'B';
6683: } else {
6684: $thisallowed.=$1;
6685: }
6686: }
6687: } else {
6688: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6689: if ($refuri) {
6690: if ($refuri =~ m|^/adm/|) {
6691: $thisallowed='F';
6692: } else {
6693: $refuri=&declutter($refuri);
6694: my ($match) = &is_on_map($refuri);
6695: if ($match) {
6696: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6697: if (@blockers > 0) {
6698: $thisallowed = 'B';
6699: } else {
6700: $thisallowed='F';
6701: }
6702: }
6703: }
6704: }
6705: }
6706: }
6707:
6708: if ($priv eq 'bre'
6709: && $thisallowed ne 'F'
6710: && $thisallowed ne '2'
6711: && &is_portfolio_url($uri)) {
6712: $thisallowed = &portfolio_access($uri);
6713: }
6714:
6715: # Full access at system, domain or course-wide level? Exit.
6716: if ($thisallowed=~/F/) {
6717: return 'F';
6718: }
6719:
6720: # If this is generating or modifying users, exit with special codes
6721:
6722: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6723: if (($priv eq 'cca') || ($priv eq 'caa')) {
6724: my ($audom,$auname)=split('/',$uri);
6725: # no author name given, so this just checks on the general right to make a co-author in this domain
6726: unless ($auname) { return $thisallowed; }
6727: # an author name is given, so we are about to actually make a co-author for a certain account
6728: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6729: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6730: ($audom ne $env{'request.role.domain'}))) { return ''; }
6731: }
6732: return $thisallowed;
6733: }
6734: #
6735: # Gathered so far: system, domain and course wide privileges
6736: #
6737: # Course: See if uri or referer is an individual resource that is part of
6738: # the course
6739:
6740: if ($env{'request.course.id'}) {
6741:
6742: $courseprivid=$env{'request.course.id'};
6743: if ($env{'request.course.sec'}) {
6744: $courseprivid.='/'.$env{'request.course.sec'};
6745: }
6746: $courseprivid=~s/\_/\//;
6747: my $checkreferer=1;
6748: my ($match,$cond)=&is_on_map($uri);
6749: if ($match) {
6750: $statecond=$cond;
6751: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6752: =~/\Q$priv\E\&([^\:]*)/) {
6753: my $value = $1;
6754: if ($priv eq 'bre') {
6755: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6756: if (@blockers > 0) {
6757: $thisallowed = 'B';
6758: } else {
6759: $thisallowed.=$value;
6760: }
6761: } else {
6762: $thisallowed.=$value;
6763: }
6764: $checkreferer=0;
6765: }
6766: }
6767:
6768: if ($checkreferer) {
6769: my $refuri=$env{'httpref.'.$orguri};
6770: unless ($refuri) {
6771: foreach my $key (keys(%env)) {
6772: if ($key=~/^httpref\..*\*/) {
6773: my $pattern=$key;
6774: $pattern=~s/^httpref\.\/res\///;
6775: $pattern=~s/\*/\[\^\/\]\+/g;
6776: $pattern=~s/\//\\\//g;
6777: if ($orguri=~/$pattern/) {
6778: $refuri=$env{$key};
6779: }
6780: }
6781: }
6782: }
6783:
6784: if ($refuri) {
6785: $refuri=&declutter($refuri);
6786: my ($match,$cond)=&is_on_map($refuri);
6787: if ($match) {
6788: my $refstatecond=$cond;
6789: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6790: =~/\Q$priv\E\&([^\:]*)/) {
6791: my $value = $1;
6792: if ($priv eq 'bre') {
6793: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6794: if (@blockers > 0) {
6795: $thisallowed = 'B';
6796: } else {
6797: $thisallowed.=$value;
6798: }
6799: } else {
6800: $thisallowed.=$value;
6801: }
6802: $uri=$refuri;
6803: $statecond=$refstatecond;
6804: }
6805: }
6806: }
6807: }
6808: }
6809:
6810: #
6811: # Gathered now: all privileges that could apply, and condition number
6812: #
6813: #
6814: # Full or no access?
6815: #
6816:
6817: if ($thisallowed=~/F/) {
6818: return 'F';
6819: }
6820:
6821: unless ($thisallowed) {
6822: return '';
6823: }
6824:
6825: # Restrictions exist, deal with them
6826: #
6827: # C:according to course preferences
6828: # R:according to resource settings
6829: # L:unless locked
6830: # X:according to user session state
6831: #
6832:
6833: # Possibly locked functionality, check all courses
6834: # Locks might take effect only after 10 minutes cache expiration for other
6835: # courses, and 2 minutes for current course
6836:
6837: my $envkey;
6838: if ($thisallowed=~/L/) {
6839: foreach $envkey (keys(%env)) {
6840: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6841: my $courseid=$2;
6842: my $roleid=$1.'.'.$2;
6843: $courseid=~s/^\///;
6844: my $expiretime=600;
6845: if ($env{'request.role'} eq $roleid) {
6846: $expiretime=120;
6847: }
6848: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6849: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6850: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6851: &coursedescription($courseid,{'freshen_cache' => 1});
6852: }
6853: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6854: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6855: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6856: &log($env{'user.domain'},$env{'user.name'},
6857: $env{'user.home'},
6858: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6859: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6860: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6861: return '';
6862: }
6863: }
6864: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6865: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6866: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6867: &log($env{'user.domain'},$env{'user.name'},
6868: $env{'user.home'},
6869: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6870: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6871: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6872: return '';
6873: }
6874: }
6875: }
6876: }
6877: }
6878:
6879: #
6880: # Rest of the restrictions depend on selected course
6881: #
6882:
6883: unless ($env{'request.course.id'}) {
6884: if ($thisallowed eq 'A') {
6885: return 'A';
6886: } elsif ($thisallowed eq 'B') {
6887: return 'B';
6888: } else {
6889: return '1';
6890: }
6891: }
6892:
6893: #
6894: # Now user is definitely in a course
6895: #
6896:
6897:
6898: # Course preferences
6899:
6900: if ($thisallowed=~/C/) {
6901: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6902: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6903: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6904: =~/\Q$rolecode\E/) {
6905: if (($priv ne 'pch') && ($priv ne 'plc')) {
6906: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6907: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6908: $env{'request.course.id'});
6909: }
6910: return '';
6911: }
6912:
6913: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6914: =~/\Q$unamedom\E/) {
6915: if (($priv ne 'pch') && ($priv ne 'plc')) {
6916: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6917: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6918: $env{'request.course.id'});
6919: }
6920: return '';
6921: }
6922: }
6923:
6924: # Resource preferences
6925:
6926: if ($thisallowed=~/R/) {
6927: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6928: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6929: if (($priv ne 'pch') && ($priv ne 'plc')) {
6930: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6931: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6932: }
6933: return '';
6934: }
6935: }
6936:
6937: # Restricted by state or randomout?
6938:
6939: if ($thisallowed=~/X/) {
6940: if ($env{'acc.randomout'}) {
6941: if (!$symb) { $symb=&symbread($uri,1); }
6942: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6943: return '';
6944: }
6945: }
6946: if (&condval($statecond)) {
6947: return '2';
6948: } else {
6949: return '';
6950: }
6951: }
6952:
6953: if ($thisallowed eq 'A') {
6954: return 'A';
6955: } elsif ($thisallowed eq 'B') {
6956: return 'B';
6957: }
6958: return 'F';
6959: }
6960:
6961: # ------------------------------------------- Check construction space access
6962:
6963: sub constructaccess {
6964: my ($url,$setpriv)=@_;
6965:
6966: # We do not allow editing of previous versions of files
6967: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6968:
6969: # Get username and domain from URL
6970: my ($ownername,$ownerdomain,$ownerhome);
6971:
6972: ($ownerdomain,$ownername) =
6973: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6974:
6975: # The URL does not really point to any authorspace, forget it
6976: unless (($ownername) && ($ownerdomain)) { return ''; }
6977:
6978: # Now we need to see if the user has access to the authorspace of
6979: # $ownername at $ownerdomain
6980:
6981: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6982: # Real author for this?
6983: $ownerhome = $env{'user.home'};
6984: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6985: return ($ownername,$ownerdomain,$ownerhome);
6986: }
6987: } else {
6988: # Co-author for this?
6989: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6990: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6991: $ownerhome = &homeserver($ownername,$ownerdomain);
6992: return ($ownername,$ownerdomain,$ownerhome);
6993: }
6994: }
6995:
6996: # We don't have any access right now. If we are not possibly going to do anything about this,
6997: # we might as well leave
6998: unless ($setpriv) { return ''; }
6999:
7000: # Backdoor access?
7001: my $allowed=&allowed('eco',$ownerdomain);
7002: # Nope
7003: unless ($allowed) { return ''; }
7004: # Looks like we may have access, but could be locked by the owner of the construction space
7005: if ($allowed eq 'U') {
7006: my %blocked=&get('environment',['domcoord.author'],
7007: $ownerdomain,$ownername);
7008: # Is blocked by owner
7009: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7010: }
7011: if (($allowed eq 'F') || ($allowed eq 'U')) {
7012: # Grant temporary access
7013: my $then=$env{'user.login.time'};
7014: my $update=$env{'user.update.time'};
7015: if (!$update) { $update = $then; }
7016: my $refresh=$env{'user.refresh.time'};
7017: if (!$refresh) { $refresh = $update; }
7018: my $now = time;
7019: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7020: $now,'ca','constructaccess');
7021: $ownerhome = &homeserver($ownername,$ownerdomain);
7022: return($ownername,$ownerdomain,$ownerhome);
7023: }
7024: # No business here
7025: return '';
7026: }
7027:
7028: sub get_comm_blocks {
7029: my ($cdom,$cnum) = @_;
7030: if ($cdom eq '' || $cnum eq '') {
7031: return unless ($env{'request.course.id'});
7032: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7033: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7034: }
7035: my %commblocks;
7036: my $hashid=$cdom.'_'.$cnum;
7037: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7038: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7039: %commblocks = %{$blocksref};
7040: } else {
7041: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7042: my $cachetime = 600;
7043: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7044: }
7045: return %commblocks;
7046: }
7047:
7048: sub has_comm_blocking {
7049: my ($priv,$symb,$uri,$blocks) = @_;
7050: return unless ($env{'request.course.id'});
7051: return unless ($priv eq 'bre');
7052: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7053: my %commblocks;
7054: if (ref($blocks) eq 'HASH') {
7055: %commblocks = %{$blocks};
7056: } else {
7057: %commblocks = &get_comm_blocks();
7058: }
7059: return unless (keys(%commblocks) > 0);
7060: if (!$symb) { $symb=&symbread($uri,1); }
7061: my ($map,$resid,undef)=&decode_symb($symb);
7062: my %tocheck = (
7063: maps => $map,
7064: resources => $symb,
7065: );
7066: my @blockers;
7067: my $now = time;
7068: my $navmap = Apache::lonnavmaps::navmap->new();
7069: foreach my $block (keys(%commblocks)) {
7070: if ($block =~ /^(\d+)____(\d+)$/) {
7071: my ($start,$end) = ($1,$2);
7072: if ($start <= $now && $end >= $now) {
7073: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7074: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7075: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7076: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
7077: unless (grep(/^\Q$block\E$/,@blockers)) {
7078: push(@blockers,$block);
7079: }
7080: }
7081: }
7082: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7083: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
7084: unless (grep(/^\Q$block\E$/,@blockers)) {
7085: push(@blockers,$block);
7086: }
7087: }
7088: }
7089: }
7090: }
7091: }
7092: } elsif ($block =~ /^firstaccess____(.+)$/) {
7093: my $item = $1;
7094: my @to_test;
7095: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7096: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7097: my $check_interval;
7098: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
7099: my @interval;
7100: my $type = 'map';
7101: if ($item eq 'course') {
7102: $type = 'course';
7103: @interval=&EXT("resource.0.interval");
7104: } else {
7105: if ($item =~ /___\d+___/) {
7106: $type = 'resource';
7107: @interval=&EXT("resource.0.interval",$item);
7108: if (ref($navmap)) {
7109: my $res = $navmap->getBySymb($item);
7110: push(@to_test,$res);
7111: }
7112: } else {
7113: my $mapsymb = &symbread($item,1);
7114: if ($mapsymb) {
7115: if (ref($navmap)) {
7116: my $mapres = $navmap->getBySymb($mapsymb);
7117: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
7118: foreach my $res (@to_test) {
7119: my $symb = $res->symb();
7120: next if ($symb eq $mapsymb);
7121: if ($symb ne '') {
7122: @interval=&EXT("resource.0.interval",$symb);
7123: last;
7124: }
7125: }
7126: }
7127: }
7128: }
7129: }
7130: if ($interval[0] =~ /\d+/) {
7131: my $first_access;
7132: if ($type eq 'resource') {
7133: $first_access=&get_first_access($interval[1],$item);
7134: } elsif ($type eq 'map') {
7135: $first_access=&get_first_access($interval[1],undef,$item);
7136: } else {
7137: $first_access=&get_first_access($interval[1]);
7138: }
7139: if ($first_access) {
7140: my $timesup = $first_access+$interval[0];
7141: if ($timesup > $now) {
7142: foreach my $res (@to_test) {
7143: if ($res->is_problem()) {
7144: if ($res->completable()) {
7145: unless (grep(/^\Q$block\E$/,@blockers)) {
7146: push(@blockers,$block);
7147: }
7148: last;
7149: }
7150: }
7151: }
7152: }
7153: }
7154: }
7155: }
7156: }
7157: }
7158: }
7159: }
7160: return @blockers;
7161: }
7162:
7163: sub check_docs_block {
7164: my ($docsblock,$tocheck) =@_;
7165: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7166: return;
7167: }
7168: if (ref($docsblock->{'maps'}) eq 'HASH') {
7169: if ($tocheck->{'maps'}) {
7170: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7171: return 1;
7172: }
7173: }
7174: }
7175: if (ref($docsblock->{'resources'}) eq 'HASH') {
7176: if ($tocheck->{'resources'}) {
7177: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7178: return 1;
7179: }
7180: }
7181: }
7182: return;
7183: }
7184:
7185: #
7186: # Removes the versino from a URI and
7187: # splits it in to its filename and path to the filename.
7188: # Seems like File::Basename could have done this more clearly.
7189: # Parameters:
7190: # $uri - input URI
7191: # Returns:
7192: # Two element list consisting of
7193: # $pathname - the URI up to and excluding the trailing /
7194: # $filename - The part of the URI following the last /
7195: # NOTE:
7196: # Another realization of this is simply:
7197: # use File::Basename;
7198: # ...
7199: # $uri = shift;
7200: # $filename = basename($uri);
7201: # $path = dirname($uri);
7202: # return ($filename, $path);
7203: #
7204: # The implementation below is probably faster however.
7205: #
7206: sub split_uri_for_cond {
7207: my $uri=&deversion(&declutter(shift));
7208: my @uriparts=split(/\//,$uri);
7209: my $filename=pop(@uriparts);
7210: my $pathname=join('/',@uriparts);
7211: return ($pathname,$filename);
7212: }
7213: # --------------------------------------------------- Is a resource on the map?
7214:
7215: sub is_on_map {
7216: my ($pathname,$filename) = &split_uri_for_cond(shift);
7217: #Trying to find the conditional for the file
7218: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7219: /\&\Q$filename\E\:([\d\|]+)\&/);
7220: if ($match) {
7221: return (1,$1);
7222: } else {
7223: return (0,0);
7224: }
7225: }
7226:
7227: # --------------------------------------------------------- Get symb from alias
7228:
7229: sub get_symb_from_alias {
7230: my $symb=shift;
7231: my ($map,$resid,$url)=&decode_symb($symb);
7232: # Already is a symb
7233: if ($url) { return $symb; }
7234: # Must be an alias
7235: my $aliassymb='';
7236: my %bighash;
7237: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7238: &GDBM_READER(),0640)) {
7239: my $rid=$bighash{'mapalias_'.$symb};
7240: if ($rid) {
7241: my ($mapid,$resid)=split(/\./,$rid);
7242: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7243: $resid,$bighash{'src_'.$rid});
7244: }
7245: untie %bighash;
7246: }
7247: return $aliassymb;
7248: }
7249:
7250: # ----------------------------------------------------------------- Define Role
7251:
7252: sub definerole {
7253: if (allowed('mcr','/')) {
7254: my ($rolename,$sysrole,$domrole,$courole)=@_;
7255: foreach my $role (split(':',$sysrole)) {
7256: my ($crole,$cqual)=split(/\&/,$role);
7257: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7258: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7259: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7260: return "refused:s:$crole&$cqual";
7261: }
7262: }
7263: }
7264: foreach my $role (split(':',$domrole)) {
7265: my ($crole,$cqual)=split(/\&/,$role);
7266: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7267: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7268: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7269: return "refused:d:$crole&$cqual";
7270: }
7271: }
7272: }
7273: foreach my $role (split(':',$courole)) {
7274: my ($crole,$cqual)=split(/\&/,$role);
7275: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7276: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7277: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7278: return "refused:c:$crole&$cqual";
7279: }
7280: }
7281: }
7282: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7283: "$env{'user.domain'}:$env{'user.name'}:".
7284: "rolesdef_$rolename=".
7285: escape($sysrole.'_'.$domrole.'_'.$courole);
7286: return reply($command,$env{'user.home'});
7287: } else {
7288: return 'refused';
7289: }
7290: }
7291:
7292: # ---------------- Make a metadata query against the network of library servers
7293:
7294: sub metadata_query {
7295: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7296: my %rhash;
7297: my %libserv = &all_library();
7298: my @server_list = (defined($server_array) ? @$server_array
7299: : keys(%libserv) );
7300: for my $server (@server_list) {
7301: my $domains = '';
7302: if (ref($domains_hash) eq 'HASH') {
7303: $domains = $domains_hash->{$server};
7304: }
7305: unless ($custom or $customshow) {
7306: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7307: $rhash{$server}=$reply;
7308: }
7309: else {
7310: my $reply=&reply("querysend:".&escape($query).':'.
7311: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7312: $server);
7313: $rhash{$server}=$reply;
7314: }
7315: }
7316: return \%rhash;
7317: }
7318:
7319: # ----------------------------------------- Send log queries and wait for reply
7320:
7321: sub log_query {
7322: my ($uname,$udom,$query,%filters)=@_;
7323: my $uhome=&homeserver($uname,$udom);
7324: if ($uhome eq 'no_host') { return 'error: no_host'; }
7325: my $uhost=&hostname($uhome);
7326: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7327: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7328: $uhome);
7329: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7330: return get_query_reply($queryid);
7331: }
7332:
7333: # -------------------------- Update MySQL table for portfolio file
7334:
7335: sub update_portfolio_table {
7336: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7337: if ($group ne '') {
7338: $file_name =~s /^\Q$group\E//;
7339: }
7340: my $homeserver = &homeserver($uname,$udom);
7341: my $queryid=
7342: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7343: ':'.&escape($file_name).':'.$action,$homeserver);
7344: my $reply = &get_query_reply($queryid);
7345: return $reply;
7346: }
7347:
7348: # -------------------------- Update MySQL allusers table
7349:
7350: sub update_allusers_table {
7351: my ($uname,$udom,$names) = @_;
7352: my $homeserver = &homeserver($uname,$udom);
7353: my $queryid=
7354: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7355: 'lastname='.&escape($names->{'lastname'}).'%%'.
7356: 'firstname='.&escape($names->{'firstname'}).'%%'.
7357: 'middlename='.&escape($names->{'middlename'}).'%%'.
7358: 'generation='.&escape($names->{'generation'}).'%%'.
7359: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7360: 'id='.&escape($names->{'id'}),$homeserver);
7361: return;
7362: }
7363:
7364: # ------- Request retrieval of institutional classlists for course(s)
7365:
7366: sub fetch_enrollment_query {
7367: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7368: my $homeserver;
7369: my $maxtries = 1;
7370: if ($context eq 'automated') {
7371: $homeserver = $perlvar{'lonHostID'};
7372: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7373: } else {
7374: $homeserver = &homeserver($cnum,$dom);
7375: }
7376: my $host=&hostname($homeserver);
7377: my $cmd = '';
7378: foreach my $affiliate (keys(%{$affiliatesref})) {
7379: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7380: }
7381: $cmd =~ s/%%$//;
7382: $cmd = &escape($cmd);
7383: my $query = 'fetchenrollment';
7384: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7385: unless ($queryid=~/^\Q$host\E\_/) {
7386: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7387: return 'error: '.$queryid;
7388: }
7389: my $reply = &get_query_reply($queryid);
7390: my $tries = 1;
7391: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7392: $reply = &get_query_reply($queryid);
7393: $tries ++;
7394: }
7395: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7396: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7397: } else {
7398: my @responses = split(/:/,$reply);
7399: if ($homeserver eq $perlvar{'lonHostID'}) {
7400: foreach my $line (@responses) {
7401: my ($key,$value) = split(/=/,$line,2);
7402: $$replyref{$key} = $value;
7403: }
7404: } else {
7405: my $pathname = LONCAPA::tempdir();
7406: foreach my $line (@responses) {
7407: my ($key,$value) = split(/=/,$line);
7408: $$replyref{$key} = $value;
7409: if ($value > 0) {
7410: foreach my $item (@{$$affiliatesref{$key}}) {
7411: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7412: my $destname = $pathname.'/'.$filename;
7413: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7414: if ($xml_classlist =~ /^error/) {
7415: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7416: } else {
7417: if ( open(FILE,">$destname") ) {
7418: print FILE &unescape($xml_classlist);
7419: close(FILE);
7420: } else {
7421: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7422: }
7423: }
7424: }
7425: }
7426: }
7427: }
7428: return 'ok';
7429: }
7430: return 'error';
7431: }
7432:
7433: sub get_query_reply {
7434: my $queryid=shift;
7435: my $replyfile=LONCAPA::tempdir().$queryid;
7436: my $reply='';
7437: for (1..100) {
7438: sleep 2;
7439: if (-e $replyfile.'.end') {
7440: if (open(my $fh,$replyfile)) {
7441: $reply = join('',<$fh>);
7442: close($fh);
7443: } else { return 'error: reply_file_error'; }
7444: return &unescape($reply);
7445: }
7446: }
7447: return 'timeout:'.$queryid;
7448: }
7449:
7450: sub courselog_query {
7451: #
7452: # possible filters:
7453: # url: url or symb
7454: # username
7455: # domain
7456: # action: view, submit, grade
7457: # start: timestamp
7458: # end: timestamp
7459: #
7460: my (%filters)=@_;
7461: unless ($env{'request.course.id'}) { return 'no_course'; }
7462: if ($filters{'url'}) {
7463: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7464: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7465: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7466: }
7467: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7468: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7469: return &log_query($cname,$cdom,'courselog',%filters);
7470: }
7471:
7472: sub userlog_query {
7473: #
7474: # possible filters:
7475: # action: log check role
7476: # start: timestamp
7477: # end: timestamp
7478: #
7479: my ($uname,$udom,%filters)=@_;
7480: return &log_query($uname,$udom,'userlog',%filters);
7481: }
7482:
7483: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7484:
7485: sub auto_run {
7486: my ($cnum,$cdom) = @_;
7487: my $response = 0;
7488: my $settings;
7489: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7490: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7491: $settings = $domconfig{'autoenroll'};
7492: if ($settings->{'run'} eq '1') {
7493: $response = 1;
7494: }
7495: } else {
7496: my $homeserver;
7497: if (&is_course($cdom,$cnum)) {
7498: $homeserver = &homeserver($cnum,$cdom);
7499: } else {
7500: $homeserver = &domain($cdom,'primary');
7501: }
7502: if ($homeserver ne 'no_host') {
7503: $response = &reply('autorun:'.$cdom,$homeserver);
7504: }
7505: }
7506: return $response;
7507: }
7508:
7509: sub auto_get_sections {
7510: my ($cnum,$cdom,$inst_coursecode) = @_;
7511: my $homeserver;
7512: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7513: $homeserver = &homeserver($cnum,$cdom);
7514: }
7515: if (!defined($homeserver)) {
7516: if ($cdom =~ /^$match_domain$/) {
7517: $homeserver = &domain($cdom,'primary');
7518: }
7519: }
7520: my @secs;
7521: if (defined($homeserver)) {
7522: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7523: unless ($response eq 'refused') {
7524: @secs = split(/:/,$response);
7525: }
7526: }
7527: return @secs;
7528: }
7529:
7530: sub auto_new_course {
7531: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7532: my $homeserver = &homeserver($cnum,$cdom);
7533: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7534: return $response;
7535: }
7536:
7537: sub auto_validate_courseID {
7538: my ($cnum,$cdom,$inst_course_id) = @_;
7539: my $homeserver = &homeserver($cnum,$cdom);
7540: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7541: return $response;
7542: }
7543:
7544: sub auto_validate_instcode {
7545: my ($cnum,$cdom,$instcode,$owner) = @_;
7546: my ($homeserver,$response);
7547: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7548: $homeserver = &homeserver($cnum,$cdom);
7549: }
7550: if (!defined($homeserver)) {
7551: if ($cdom =~ /^$match_domain$/) {
7552: $homeserver = &domain($cdom,'primary');
7553: }
7554: }
7555: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7556: &escape($instcode).':'.&escape($owner),$homeserver));
7557: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7558: return ($outcome,$description,$defaultcredits);
7559: }
7560:
7561: sub auto_create_password {
7562: my ($cnum,$cdom,$authparam,$udom) = @_;
7563: my ($homeserver,$response);
7564: my $create_passwd = 0;
7565: my $authchk = '';
7566: if ($udom =~ /^$match_domain$/) {
7567: $homeserver = &domain($udom,'primary');
7568: }
7569: if ($homeserver eq '') {
7570: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7571: $homeserver = &homeserver($cnum,$cdom);
7572: }
7573: }
7574: if ($homeserver eq '') {
7575: $authchk = 'nodomain';
7576: } else {
7577: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7578: if ($response eq 'refused') {
7579: $authchk = 'refused';
7580: } else {
7581: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7582: }
7583: }
7584: return ($authparam,$create_passwd,$authchk);
7585: }
7586:
7587: sub auto_photo_permission {
7588: my ($cnum,$cdom,$students) = @_;
7589: my $homeserver = &homeserver($cnum,$cdom);
7590: my ($outcome,$perm_reqd,$conditions) =
7591: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7592: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7593: return (undef,undef);
7594: }
7595: return ($outcome,$perm_reqd,$conditions);
7596: }
7597:
7598: sub auto_checkphotos {
7599: my ($uname,$udom,$pid) = @_;
7600: my $homeserver = &homeserver($uname,$udom);
7601: my ($result,$resulttype);
7602: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7603: &escape($uname).':'.&escape($pid),
7604: $homeserver));
7605: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7606: return (undef,undef);
7607: }
7608: if ($outcome) {
7609: ($result,$resulttype) = split(/:/,$outcome);
7610: }
7611: return ($result,$resulttype);
7612: }
7613:
7614: sub auto_photochoice {
7615: my ($cnum,$cdom) = @_;
7616: my $homeserver = &homeserver($cnum,$cdom);
7617: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7618: &escape($cdom),
7619: $homeserver)));
7620: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7621: return (undef,undef);
7622: }
7623: return ($update,$comment);
7624: }
7625:
7626: sub auto_photoupdate {
7627: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7628: my $homeserver = &homeserver($cnum,$dom);
7629: my $host=&hostname($homeserver);
7630: my $cmd = '';
7631: my $maxtries = 1;
7632: foreach my $affiliate (keys(%{$affiliatesref})) {
7633: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7634: }
7635: $cmd =~ s/%%$//;
7636: $cmd = &escape($cmd);
7637: my $query = 'institutionalphotos';
7638: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7639: unless ($queryid=~/^\Q$host\E\_/) {
7640: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7641: return 'error: '.$queryid;
7642: }
7643: my $reply = &get_query_reply($queryid);
7644: my $tries = 1;
7645: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7646: $reply = &get_query_reply($queryid);
7647: $tries ++;
7648: }
7649: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7650: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7651: } else {
7652: my @responses = split(/:/,$reply);
7653: my $outcome = shift(@responses);
7654: foreach my $item (@responses) {
7655: my ($key,$value) = split(/=/,$item);
7656: $$photo{$key} = $value;
7657: }
7658: return $outcome;
7659: }
7660: return 'error';
7661: }
7662:
7663: sub auto_instcode_format {
7664: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7665: $cat_order) = @_;
7666: my $courses = '';
7667: my @homeservers;
7668: if ($caller eq 'global') {
7669: my %servers = &get_servers($codedom,'library');
7670: foreach my $tryserver (keys(%servers)) {
7671: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7672: push(@homeservers,$tryserver);
7673: }
7674: }
7675: } elsif ($caller eq 'requests') {
7676: if ($codedom =~ /^$match_domain$/) {
7677: my $chome = &domain($codedom,'primary');
7678: unless ($chome eq 'no_host') {
7679: push(@homeservers,$chome);
7680: }
7681: }
7682: } else {
7683: push(@homeservers,&homeserver($caller,$codedom));
7684: }
7685: foreach my $code (keys(%{$instcodes})) {
7686: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7687: }
7688: chop($courses);
7689: my $ok_response = 0;
7690: my $response;
7691: while (@homeservers > 0 && $ok_response == 0) {
7692: my $server = shift(@homeservers);
7693: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7694: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7695: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7696: split(/:/,$response);
7697: %{$codes} = (%{$codes},&str2hash($codes_str));
7698: push(@{$codetitles},&str2array($codetitles_str));
7699: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7700: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7701: $ok_response = 1;
7702: }
7703: }
7704: if ($ok_response) {
7705: return 'ok';
7706: } else {
7707: return $response;
7708: }
7709: }
7710:
7711: sub auto_instcode_defaults {
7712: my ($domain,$returnhash,$code_order) = @_;
7713: my @homeservers;
7714:
7715: my %servers = &get_servers($domain,'library');
7716: foreach my $tryserver (keys(%servers)) {
7717: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7718: push(@homeservers,$tryserver);
7719: }
7720: }
7721:
7722: my $response;
7723: foreach my $server (@homeservers) {
7724: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7725: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7726:
7727: foreach my $pair (split(/\&/,$response)) {
7728: my ($name,$value)=split(/\=/,$pair);
7729: if ($name eq 'code_order') {
7730: @{$code_order} = split(/\&/,&unescape($value));
7731: } else {
7732: $returnhash->{&unescape($name)}=&unescape($value);
7733: }
7734: }
7735: return 'ok';
7736: }
7737:
7738: return $response;
7739: }
7740:
7741: sub auto_possible_instcodes {
7742: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7743: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7744: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7745: return;
7746: }
7747: my (@homeservers,$uhome);
7748: if (defined(&domain($domain,'primary'))) {
7749: $uhome=&domain($domain,'primary');
7750: push(@homeservers,&domain($domain,'primary'));
7751: } else {
7752: my %servers = &get_servers($domain,'library');
7753: foreach my $tryserver (keys(%servers)) {
7754: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7755: push(@homeservers,$tryserver);
7756: }
7757: }
7758: }
7759: my $response;
7760: foreach my $server (@homeservers) {
7761: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7762: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7763: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7764: split(':',$response);
7765: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7766: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7767: foreach my $item (split('&',$cat_title)) {
7768: my ($name,$value)=split('=',$item);
7769: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7770: }
7771: foreach my $item (split('&',$cat_order)) {
7772: my ($name,$value)=split('=',$item);
7773: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7774: }
7775: return 'ok';
7776: }
7777: return $response;
7778: }
7779:
7780: sub auto_courserequest_checks {
7781: my ($dom) = @_;
7782: my ($homeserver,%validations);
7783: if ($dom =~ /^$match_domain$/) {
7784: $homeserver = &domain($dom,'primary');
7785: }
7786: unless ($homeserver eq 'no_host') {
7787: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7788: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7789: my @items = split(/&/,$response);
7790: foreach my $item (@items) {
7791: my ($key,$value) = split('=',$item);
7792: $validations{&unescape($key)} = &thaw_unescape($value);
7793: }
7794: }
7795: }
7796: return %validations;
7797: }
7798:
7799: sub auto_courserequest_validation {
7800: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7801: my ($homeserver,$response);
7802: if ($dom =~ /^$match_domain$/) {
7803: $homeserver = &domain($dom,'primary');
7804: }
7805: unless ($homeserver eq 'no_host') {
7806:
7807: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7808: ':'.&escape($crstype).':'.&escape($inststatuslist).
7809: ':'.&escape($instcode).':'.&escape($instseclist),
7810: $homeserver));
7811: }
7812: return $response;
7813: }
7814:
7815: sub auto_validate_class_sec {
7816: my ($cdom,$cnum,$owners,$inst_class) = @_;
7817: my $homeserver = &homeserver($cnum,$cdom);
7818: my $ownerlist;
7819: if (ref($owners) eq 'ARRAY') {
7820: $ownerlist = join(',',@{$owners});
7821: } else {
7822: $ownerlist = $owners;
7823: }
7824: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7825: &escape($ownerlist).':'.$cdom,$homeserver);
7826: return $response;
7827: }
7828:
7829: # ------------------------------------------------------- Course Group routines
7830:
7831: sub get_coursegroups {
7832: my ($cdom,$cnum,$group,$namespace) = @_;
7833: return(&dump($namespace,$cdom,$cnum,$group));
7834: }
7835:
7836: sub modify_coursegroup {
7837: my ($cdom,$cnum,$groupsettings) = @_;
7838: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7839: }
7840:
7841: sub toggle_coursegroup_status {
7842: my ($cdom,$cnum,$group,$action) = @_;
7843: my ($from_namespace,$to_namespace);
7844: if ($action eq 'delete') {
7845: $from_namespace = 'coursegroups';
7846: $to_namespace = 'deleted_groups';
7847: } else {
7848: $from_namespace = 'deleted_groups';
7849: $to_namespace = 'coursegroups';
7850: }
7851: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7852: if (my $tmp = &error(%curr_group)) {
7853: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7854: return ('read error',$tmp);
7855: } else {
7856: my %savedsettings = %curr_group;
7857: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7858: my $deloutcome;
7859: if ($result eq 'ok') {
7860: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7861: } else {
7862: return ('write error',$result);
7863: }
7864: if ($deloutcome eq 'ok') {
7865: return 'ok';
7866: } else {
7867: return ('delete error',$deloutcome);
7868: }
7869: }
7870: }
7871:
7872: sub modify_group_roles {
7873: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7874: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7875: my $role = 'gr/'.&escape($userprivs);
7876: my ($uname,$udom) = split(/:/,$user);
7877: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7878: if ($result eq 'ok') {
7879: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7880: }
7881: return $result;
7882: }
7883:
7884: sub modify_coursegroup_membership {
7885: my ($cdom,$cnum,$membership) = @_;
7886: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7887: return $result;
7888: }
7889:
7890: sub get_active_groups {
7891: my ($udom,$uname,$cdom,$cnum) = @_;
7892: my $now = time;
7893: my %groups = ();
7894: foreach my $key (keys(%env)) {
7895: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7896: my ($start,$end) = split(/\./,$env{$key});
7897: if (($end!=0) && ($end<$now)) { next; }
7898: if (($start!=0) && ($start>$now)) { next; }
7899: if ($1 eq $cdom && $2 eq $cnum) {
7900: $groups{$3} = $env{$key} ;
7901: }
7902: }
7903: }
7904: return %groups;
7905: }
7906:
7907: sub get_group_membership {
7908: my ($cdom,$cnum,$group) = @_;
7909: return(&dump('groupmembership',$cdom,$cnum,$group));
7910: }
7911:
7912: sub get_users_groups {
7913: my ($udom,$uname,$courseid) = @_;
7914: my @usersgroups;
7915: my $cachetime=1800;
7916:
7917: my $hashid="$udom:$uname:$courseid";
7918: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7919: if (defined($cached)) {
7920: @usersgroups = split(/:/,$grouplist);
7921: } else {
7922: $grouplist = '';
7923: my $courseurl = &courseid_to_courseurl($courseid);
7924: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7925: my $access_end = $env{'course.'.$courseid.
7926: '.default_enrollment_end_date'};
7927: my $now = time;
7928: foreach my $key (keys(%roleshash)) {
7929: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7930: my $group = $1;
7931: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7932: my $start = $2;
7933: my $end = $1;
7934: if ($start == -1) { next; } # deleted from group
7935: if (($start!=0) && ($start>$now)) { next; }
7936: if (($end!=0) && ($end<$now)) {
7937: if ($access_end && $access_end < $now) {
7938: if ($access_end - $end < 86400) {
7939: push(@usersgroups,$group);
7940: }
7941: }
7942: next;
7943: }
7944: push(@usersgroups,$group);
7945: }
7946: }
7947: }
7948: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7949: $grouplist = join(':',@usersgroups);
7950: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7951: }
7952: return @usersgroups;
7953: }
7954:
7955: sub devalidate_getgroups_cache {
7956: my ($udom,$uname,$cdom,$cnum)=@_;
7957: my $courseid = $cdom.'_'.$cnum;
7958:
7959: my $hashid="$udom:$uname:$courseid";
7960: &devalidate_cache_new('getgroups',$hashid);
7961: }
7962:
7963: # ------------------------------------------------------------------ Plain Text
7964:
7965: sub plaintext {
7966: my ($short,$type,$cid,$forcedefault) = @_;
7967: if ($short =~ m{^cr/}) {
7968: return (split('/',$short))[-1];
7969: }
7970: if (!defined($cid)) {
7971: $cid = $env{'request.course.id'};
7972: }
7973: my %rolenames = (
7974: Course => 'std',
7975: Community => 'alt1',
7976: );
7977: if ($cid ne '') {
7978: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7979: unless ($forcedefault) {
7980: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7981: &Apache::lonlocal::mt_escape(\$roletext);
7982: return &Apache::lonlocal::mt($roletext);
7983: }
7984: }
7985: }
7986: if ((defined($type)) && (defined($rolenames{$type})) &&
7987: (defined($rolenames{$type})) &&
7988: (defined($prp{$short}{$rolenames{$type}}))) {
7989: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7990: } elsif ($cid ne '') {
7991: my $crstype = $env{'course.'.$cid.'.type'};
7992: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7993: (defined($prp{$short}{$rolenames{$crstype}}))) {
7994: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7995: }
7996: }
7997: return &Apache::lonlocal::mt($prp{$short}{'std'});
7998: }
7999:
8000: # ----------------------------------------------------------------- Assign Role
8001:
8002: sub assignrole {
8003: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8004: $context)=@_;
8005: my $mrole;
8006: if ($role =~ /^cr\//) {
8007: my $cwosec=$url;
8008: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8009: unless (&allowed('ccr',$cwosec)) {
8010: my $refused = 1;
8011: if ($context eq 'requestcourses') {
8012: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8013: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8014: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8015: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8016: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8017: if ($crsenv{'internal.courseowner'} eq
8018: $env{'user.name'}.':'.$env{'user.domain'}) {
8019: $refused = '';
8020: }
8021: }
8022: }
8023: }
8024: }
8025: if ($refused) {
8026: &logthis('Refused custom assignrole: '.
8027: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8028: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8029: return 'refused';
8030: }
8031: }
8032: $mrole='cr';
8033: } elsif ($role =~ /^gr\//) {
8034: my $cwogrp=$url;
8035: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8036: unless (&allowed('mdg',$cwogrp)) {
8037: &logthis('Refused group assignrole: '.
8038: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8039: $env{'user.name'}.' at '.$env{'user.domain'});
8040: return 'refused';
8041: }
8042: $mrole='gr';
8043: } else {
8044: my $cwosec=$url;
8045: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8046: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8047: my $refused;
8048: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8049: if (!(&allowed('c'.$role,$url))) {
8050: $refused = 1;
8051: }
8052: } else {
8053: $refused = 1;
8054: }
8055: if ($refused) {
8056: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8057: if (!$selfenroll && $context eq 'course') {
8058: my %crsenv;
8059: if ($role eq 'cc' || $role eq 'co') {
8060: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8061: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8062: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8063: if ($crsenv{'internal.courseowner'} eq
8064: $env{'user.name'}.':'.$env{'user.domain'}) {
8065: $refused = '';
8066: }
8067: }
8068: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8069: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8070: if ($crsenv{'internal.courseowner'} eq
8071: $env{'user.name'}.':'.$env{'user.domain'}) {
8072: $refused = '';
8073: }
8074: }
8075: }
8076: }
8077: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8078: $refused = '';
8079: } elsif ($context eq 'requestcourses') {
8080: my @possroles = ('st','ta','ep','in','cc','co');
8081: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8082: my $wrongcc;
8083: if ($cnum =~ /^$match_community$/) {
8084: $wrongcc = 1 if ($role eq 'cc');
8085: } else {
8086: $wrongcc = 1 if ($role eq 'co');
8087: }
8088: unless ($wrongcc) {
8089: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8090: if ($crsenv{'internal.courseowner'} eq
8091: $env{'user.name'}.':'.$env{'user.domain'}) {
8092: $refused = '';
8093: }
8094: }
8095: }
8096: } elsif ($context eq 'requestauthor') {
8097: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8098: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8099: if ($env{'environment.requestauthor'} eq 'automatic') {
8100: $refused = '';
8101: } else {
8102: my %domdefaults = &get_domain_defaults($udom);
8103: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8104: my $checkbystatus;
8105: if ($env{'user.adv'}) {
8106: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8107: if ($disposition eq 'automatic') {
8108: $refused = '';
8109: } elsif ($disposition eq '') {
8110: $checkbystatus = 1;
8111: }
8112: } else {
8113: $checkbystatus = 1;
8114: }
8115: if ($checkbystatus) {
8116: if ($env{'environment.inststatus'}) {
8117: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8118: foreach my $type (@inststatuses) {
8119: if (($type ne '') &&
8120: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8121: $refused = '';
8122: }
8123: }
8124: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8125: $refused = '';
8126: }
8127: }
8128: }
8129: }
8130: }
8131: }
8132: if ($refused) {
8133: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8134: ' '.$role.' '.$end.' '.$start.' by '.
8135: $env{'user.name'}.' at '.$env{'user.domain'});
8136: return 'refused';
8137: }
8138: }
8139: } elsif ($role eq 'au') {
8140: if ($url ne '/'.$udom.'/') {
8141: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8142: ' to assign author role for '.$uname.':'.$udom.
8143: ' in domain: '.$url.' refused (wrong domain).');
8144: return 'refused';
8145: }
8146: }
8147: $mrole=$role;
8148: }
8149: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8150: "$udom:$uname:$url".'_'."$mrole=$role";
8151: if ($end) { $command.='_'.$end; }
8152: if ($start) {
8153: if ($end) {
8154: $command.='_'.$start;
8155: } else {
8156: $command.='_0_'.$start;
8157: }
8158: }
8159: my $origstart = $start;
8160: my $origend = $end;
8161: my $delflag;
8162: # actually delete
8163: if ($deleteflag) {
8164: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8165: # modify command to delete the role
8166: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8167: "$udom:$uname:$url".'_'."$mrole";
8168: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8169: # set start and finish to negative values for userrolelog
8170: $start=-1;
8171: $end=-1;
8172: $delflag = 1;
8173: }
8174: }
8175: # send command
8176: my $answer=&reply($command,&homeserver($uname,$udom));
8177: # log new user role if status is ok
8178: if ($answer eq 'ok') {
8179: &userrolelog($role,$uname,$udom,$url,$start,$end);
8180: if (($role eq 'cc') || ($role eq 'in') ||
8181: ($role eq 'ep') || ($role eq 'ad') ||
8182: ($role eq 'ta') || ($role eq 'st') ||
8183: ($role=~/^cr/) || ($role eq 'gr') ||
8184: ($role eq 'co')) {
8185: # for course roles, perform group memberships changes triggered by role change.
8186: unless ($role =~ /^gr/) {
8187: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8188: $origstart,$selfenroll,$context);
8189: }
8190: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8191: $selfenroll,$context);
8192: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8193: ($role eq 'au') || ($role eq 'dc')) {
8194: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8195: $context);
8196: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8197: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8198: $context);
8199: }
8200: if ($role eq 'cc') {
8201: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8202: }
8203: }
8204: return $answer;
8205: }
8206:
8207: sub autoupdate_coowners {
8208: my ($url,$end,$start,$uname,$udom) = @_;
8209: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8210: if (($cdom ne '') && ($cnum ne '')) {
8211: my $now = time;
8212: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8213: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8214: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8215: my $instcode = $coursehash{'internal.coursecode'};
8216: if ($instcode ne '') {
8217: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8218: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8219: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8220: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8221: if ($result eq 'valid') {
8222: if ($coursehash{'internal.co-owners'}) {
8223: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8224: push(@newcoowners,$coowner);
8225: }
8226: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8227: push(@newcoowners,$uname.':'.$udom);
8228: }
8229: @newcoowners = sort(@newcoowners);
8230: } else {
8231: push(@newcoowners,$uname.':'.$udom);
8232: }
8233: } else {
8234: if ($coursehash{'internal.co-owners'}) {
8235: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8236: unless ($coowner eq $uname.':'.$udom) {
8237: push(@newcoowners,$coowner);
8238: }
8239: }
8240: unless (@newcoowners > 0) {
8241: $delcoowners = 1;
8242: $coowners = '';
8243: }
8244: }
8245: }
8246: if (@newcoowners || $delcoowners) {
8247: &store_coowners($cdom,$cnum,$coursehash{'home'},
8248: $delcoowners,@newcoowners);
8249: }
8250: }
8251: }
8252: }
8253: }
8254: }
8255: }
8256:
8257: sub store_coowners {
8258: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8259: my $cid = $cdom.'_'.$cnum;
8260: my ($coowners,$delresult,$putresult);
8261: if (@newcoowners) {
8262: $coowners = join(',',@newcoowners);
8263: my %coownershash = (
8264: 'internal.co-owners' => $coowners,
8265: );
8266: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8267: if ($putresult eq 'ok') {
8268: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8269: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8270: }
8271: }
8272: }
8273: if ($delcoowners) {
8274: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8275: if ($delresult eq 'ok') {
8276: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8277: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8278: }
8279: }
8280: }
8281: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8282: my %crsinfo =
8283: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8284: if (ref($crsinfo{$cid}) eq 'HASH') {
8285: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8286: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8287: }
8288: }
8289: }
8290:
8291: # -------------------------------------------------- Modify user authentication
8292: # Overrides without validation
8293:
8294: sub modifyuserauth {
8295: my ($udom,$uname,$umode,$upass)=@_;
8296: my $uhome=&homeserver($uname,$udom);
8297: unless (&allowed('mau',$udom)) { return 'refused'; }
8298: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8299: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8300: ' in domain '.$env{'request.role.domain'});
8301: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8302: &escape($upass),$uhome);
8303: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8304: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8305: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8306: &log($udom,,$uname,$uhome,
8307: 'Authentication changed by '.$env{'user.domain'}.', '.
8308: $env{'user.name'}.', '.$umode.
8309: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8310: unless ($reply eq 'ok') {
8311: &logthis('Authentication mode error: '.$reply);
8312: return 'error: '.$reply;
8313: }
8314: return 'ok';
8315: }
8316:
8317: # --------------------------------------------------------------- Modify a user
8318:
8319: sub modifyuser {
8320: my ($udom, $uname, $uid,
8321: $umode, $upass, $first,
8322: $middle, $last, $gene,
8323: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8324: $udom= &LONCAPA::clean_domain($udom);
8325: $uname=&LONCAPA::clean_username($uname);
8326: my $showcandelete = 'none';
8327: if (ref($candelete) eq 'ARRAY') {
8328: if (@{$candelete} > 0) {
8329: $showcandelete = join(', ',@{$candelete});
8330: }
8331: }
8332: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8333: $umode.', '.$first.', '.$middle.', '.
8334: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8335: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8336: ' desiredhome not specified').
8337: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8338: ' in domain '.$env{'request.role.domain'});
8339: my $uhome=&homeserver($uname,$udom,'true');
8340: my $newuser;
8341: if ($uhome eq 'no_host') {
8342: $newuser = 1;
8343: }
8344: # ----------------------------------------------------------------- Create User
8345: if (($uhome eq 'no_host') &&
8346: (($umode && $upass) || ($umode eq 'localauth'))) {
8347: my $unhome='';
8348: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8349: $unhome = $desiredhome;
8350: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8351: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8352: } else { # load balancing routine for determining $unhome
8353: my $loadm=10000000;
8354: my %servers = &get_servers($udom,'library');
8355: foreach my $tryserver (keys(%servers)) {
8356: my $answer=reply('load',$tryserver);
8357: if (($answer=~/\d+/) && ($answer<$loadm)) {
8358: $loadm=$answer;
8359: $unhome=$tryserver;
8360: }
8361: }
8362: }
8363: if (($unhome eq '') || ($unhome eq 'no_host')) {
8364: return 'error: unable to find a home server for '.$uname.
8365: ' in domain '.$udom;
8366: }
8367: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8368: &escape($upass),$unhome);
8369: unless ($reply eq 'ok') {
8370: return 'error: '.$reply;
8371: }
8372: $uhome=&homeserver($uname,$udom,'true');
8373: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8374: return 'error: unable verify users home machine.';
8375: }
8376: } # End of creation of new user
8377: # ---------------------------------------------------------------------- Add ID
8378: if ($uid) {
8379: $uid=~tr/A-Z/a-z/;
8380: my %uidhash=&idrget($udom,$uname);
8381: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8382: && (!$forceid)) {
8383: unless ($uid eq $uidhash{$uname}) {
8384: return 'error: user id "'.$uid.'" does not match '.
8385: 'current user id "'.$uidhash{$uname}.'".';
8386: }
8387: } else {
8388: &idput($udom,($uname => $uid));
8389: }
8390: }
8391: # -------------------------------------------------------------- Add names, etc
8392: my @tmp=&get('environment',
8393: ['firstname','middlename','lastname','generation','id',
8394: 'permanentemail','inststatus'],
8395: $udom,$uname);
8396: my (%names,%oldnames);
8397: if ($tmp[0] =~ m/^error:.*/) {
8398: %names=();
8399: } else {
8400: %names = @tmp;
8401: %oldnames = %names;
8402: }
8403: #
8404: # If name, email and/or uid are blank (e.g., because an uploaded file
8405: # of users did not contain them), do not overwrite existing values
8406: # unless field is in $candelete array ref.
8407: #
8408:
8409: my @fields = ('firstname','middlename','lastname','generation',
8410: 'permanentemail','id');
8411: my %newvalues;
8412: if (ref($candelete) eq 'ARRAY') {
8413: foreach my $field (@fields) {
8414: if (grep(/^\Q$field\E$/,@{$candelete})) {
8415: if ($field eq 'firstname') {
8416: $names{$field} = $first;
8417: } elsif ($field eq 'middlename') {
8418: $names{$field} = $middle;
8419: } elsif ($field eq 'lastname') {
8420: $names{$field} = $last;
8421: } elsif ($field eq 'generation') {
8422: $names{$field} = $gene;
8423: } elsif ($field eq 'permanentemail') {
8424: $names{$field} = $email;
8425: } elsif ($field eq 'id') {
8426: $names{$field} = $uid;
8427: }
8428: }
8429: }
8430: }
8431: if ($first) { $names{'firstname'} = $first; }
8432: if (defined($middle)) { $names{'middlename'} = $middle; }
8433: if ($last) { $names{'lastname'} = $last; }
8434: if (defined($gene)) { $names{'generation'} = $gene; }
8435: if ($email) {
8436: $email=~s/[^\w\@\.\-\,]//gs;
8437: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8438: }
8439: if ($uid) { $names{'id'} = $uid; }
8440: if (defined($inststatus)) {
8441: $names{'inststatus'} = '';
8442: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8443: if (ref($usertypes) eq 'HASH') {
8444: my @okstatuses;
8445: foreach my $item (split(/:/,$inststatus)) {
8446: if (defined($usertypes->{$item})) {
8447: push(@okstatuses,$item);
8448: }
8449: }
8450: if (@okstatuses) {
8451: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8452: }
8453: }
8454: }
8455: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8456: $umode.', '.$first.', '.$middle.', '.
8457: $last.', '.$gene.', '.$email.', '.$inststatus;
8458: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8459: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8460: } else {
8461: $logmsg .= ' during self creation';
8462: }
8463: my $changed;
8464: if ($newuser) {
8465: $changed = 1;
8466: } else {
8467: foreach my $field (@fields) {
8468: if ($names{$field} ne $oldnames{$field}) {
8469: $changed = 1;
8470: last;
8471: }
8472: }
8473: }
8474: unless ($changed) {
8475: $logmsg = 'No changes in user information needed for: '.$logmsg;
8476: &logthis($logmsg);
8477: return 'ok';
8478: }
8479: my $reply = &put('environment', \%names, $udom,$uname);
8480: if ($reply ne 'ok') {
8481: return 'error: '.$reply;
8482: }
8483: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8484: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8485: }
8486: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8487: &devalidate_cache_new('namescache',$uname.':'.$udom);
8488: $logmsg = 'Success modifying user '.$logmsg;
8489: &logthis($logmsg);
8490: return 'ok';
8491: }
8492:
8493: # -------------------------------------------------------------- Modify student
8494:
8495: sub modifystudent {
8496: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8497: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8498: $selfenroll,$context,$inststatus,$credits)=@_;
8499: if (!$cid) {
8500: unless ($cid=$env{'request.course.id'}) {
8501: return 'not_in_class';
8502: }
8503: }
8504: # --------------------------------------------------------------- Make the user
8505: my $reply=&modifyuser
8506: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8507: $desiredhome,$email,$inststatus);
8508: unless ($reply eq 'ok') { return $reply; }
8509: # This will cause &modify_student_enrollment to get the uid from the
8510: # student's environment
8511: $uid = undef if (!$forceid);
8512: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8513: $gene,$usec,$end,$start,$type,$locktype,
8514: $cid,$selfenroll,$context,$credits);
8515: return $reply;
8516: }
8517:
8518: sub modify_student_enrollment {
8519: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8520: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8521: my ($cdom,$cnum,$chome);
8522: if (!$cid) {
8523: unless ($cid=$env{'request.course.id'}) {
8524: return 'not_in_class';
8525: }
8526: $cdom=$env{'course.'.$cid.'.domain'};
8527: $cnum=$env{'course.'.$cid.'.num'};
8528: } else {
8529: ($cdom,$cnum)=split(/_/,$cid);
8530: }
8531: $chome=$env{'course.'.$cid.'.home'};
8532: if (!$chome) {
8533: $chome=&homeserver($cnum,$cdom);
8534: }
8535: if (!$chome) { return 'unknown_course'; }
8536: # Make sure the user exists
8537: my $uhome=&homeserver($uname,$udom);
8538: if (($uhome eq '') || ($uhome eq 'no_host')) {
8539: return 'error: no such user';
8540: }
8541: # Get student data if we were not given enough information
8542: if (!defined($first) || $first eq '' ||
8543: !defined($last) || $last eq '' ||
8544: !defined($uid) || $uid eq '' ||
8545: !defined($middle) || $middle eq '' ||
8546: !defined($gene) || $gene eq '') {
8547: # They did not supply us with enough data to enroll the student, so
8548: # we need to pick up more information.
8549: my %tmp = &get('environment',
8550: ['firstname','middlename','lastname', 'generation','id']
8551: ,$udom,$uname);
8552:
8553: #foreach my $key (keys(%tmp)) {
8554: # &logthis("key $key = ".$tmp{$key});
8555: #}
8556: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8557: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8558: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8559: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8560: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8561: }
8562: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8563: my $user = "$uname:$udom";
8564: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8565: my $reply=cput('classlist',
8566: {$user =>
8567: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8568: $cdom,$cnum);
8569: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8570: &devalidate_getsection_cache($udom,$uname,$cid);
8571: } else {
8572: return 'error: '.$reply;
8573: }
8574: # Add student role to user
8575: my $uurl='/'.$cid;
8576: $uurl=~s/\_/\//g;
8577: if ($usec) {
8578: $uurl.='/'.$usec;
8579: }
8580: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8581: $selfenroll,$context);
8582: if ($result ne 'ok') {
8583: if ($old_entry{$user} ne '') {
8584: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8585: } else {
8586: $reply = &del('classlist',[$user],$cdom,$cnum);
8587: }
8588: }
8589: return $result;
8590: }
8591:
8592: sub format_name {
8593: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8594: my $name;
8595: if ($first ne 'lastname') {
8596: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8597: } else {
8598: if ($lastname=~/\S/) {
8599: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8600: $name=~s/\s+,/,/;
8601: } else {
8602: $name.= $firstname.' '.$middlename.' '.$generation;
8603: }
8604: }
8605: $name=~s/^\s+//;
8606: $name=~s/\s+$//;
8607: $name=~s/\s+/ /g;
8608: return $name;
8609: }
8610:
8611: # ------------------------------------------------- Write to course preferences
8612:
8613: sub writecoursepref {
8614: my ($courseid,%prefs)=@_;
8615: $courseid=~s/^\///;
8616: $courseid=~s/\_/\//g;
8617: my ($cdomain,$cnum)=split(/\//,$courseid);
8618: my $chome=homeserver($cnum,$cdomain);
8619: if (($chome eq '') || ($chome eq 'no_host')) {
8620: return 'error: no such course';
8621: }
8622: my $cstring='';
8623: foreach my $pref (keys(%prefs)) {
8624: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8625: }
8626: $cstring=~s/\&$//;
8627: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8628: }
8629:
8630: # ---------------------------------------------------------- Make/modify course
8631:
8632: sub createcourse {
8633: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8634: $course_owner,$crstype,$cnum,$context,$category)=@_;
8635: $url=&declutter($url);
8636: my $cid='';
8637: if ($context eq 'requestcourses') {
8638: my $can_create = 0;
8639: my ($ownername,$ownerdom) = split(':',$course_owner);
8640: if ($udom eq $ownerdom) {
8641: if (&usertools_access($ownername,$ownerdom,$category,undef,
8642: $context)) {
8643: $can_create = 1;
8644: }
8645: } else {
8646: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8647: $category);
8648: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8649: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8650: if (@curr > 0) {
8651: my @options = qw(approval validate autolimit);
8652: my $optregex = join('|',@options);
8653: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8654: $can_create = 1;
8655: }
8656: }
8657: }
8658: }
8659: if ($can_create) {
8660: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8661: unless (&allowed('ccc',$udom)) {
8662: return 'refused';
8663: }
8664: }
8665: } else {
8666: return 'refused';
8667: }
8668: } elsif (!&allowed('ccc',$udom)) {
8669: return 'refused';
8670: }
8671: # --------------------------------------------------------------- Get Unique ID
8672: my $uname;
8673: if ($cnum =~ /^$match_courseid$/) {
8674: my $chome=&homeserver($cnum,$udom,'true');
8675: if (($chome eq '') || ($chome eq 'no_host')) {
8676: $uname = $cnum;
8677: } else {
8678: $uname = &generate_coursenum($udom,$crstype);
8679: }
8680: } else {
8681: $uname = &generate_coursenum($udom,$crstype);
8682: }
8683: return $uname if ($uname =~ /^error/);
8684: # -------------------------------------------------- Check supplied server name
8685: if (!defined($course_server)) {
8686: if (defined(&domain($udom,'primary'))) {
8687: $course_server = &domain($udom,'primary');
8688: } else {
8689: $course_server = $env{'user.home'};
8690: }
8691: }
8692: my %host_servers =
8693: &Apache::lonnet::get_servers($udom,'library');
8694: unless ($host_servers{$course_server}) {
8695: return 'error: invalid home server for course: '.$course_server;
8696: }
8697: # ------------------------------------------------------------- Make the course
8698: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8699: $course_server);
8700: unless ($reply eq 'ok') { return 'error: '.$reply; }
8701: my $uhome=&homeserver($uname,$udom,'true');
8702: if (($uhome eq '') || ($uhome eq 'no_host')) {
8703: return 'error: no such course';
8704: }
8705: # ----------------------------------------------------------------- Course made
8706: # log existence
8707: my $now = time;
8708: my $newcourse = {
8709: $udom.'_'.$uname => {
8710: description => $description,
8711: inst_code => $inst_code,
8712: owner => $course_owner,
8713: type => $crstype,
8714: creator => $env{'user.name'}.':'.
8715: $env{'user.domain'},
8716: created => $now,
8717: context => $context,
8718: },
8719: };
8720: &courseidput($udom,$newcourse,$uhome,'notime');
8721: # set toplevel url
8722: my $topurl=$url;
8723: unless ($nonstandard) {
8724: # ------------------------------------------ For standard courses, make top url
8725: my $mapurl=&clutter($url);
8726: if ($mapurl eq '/res/') { $mapurl=''; }
8727: $env{'form.initmap'}=(<<ENDINITMAP);
8728: <map>
8729: <resource id="1" type="start"></resource>
8730: <resource id="2" src="$mapurl"></resource>
8731: <resource id="3" type="finish"></resource>
8732: <link index="1" from="1" to="2"></link>
8733: <link index="2" from="2" to="3"></link>
8734: </map>
8735: ENDINITMAP
8736: $topurl=&declutter(
8737: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8738: );
8739: }
8740: # ----------------------------------------------------------- Write preferences
8741: &writecoursepref($udom.'_'.$uname,
8742: ('description' => $description,
8743: 'url' => $topurl,
8744: 'internal.creator' => $env{'user.name'}.':'.
8745: $env{'user.domain'},
8746: 'internal.created' => $now,
8747: 'internal.creationcontext' => $context)
8748: );
8749: return '/'.$udom.'/'.$uname;
8750: }
8751:
8752: # ------------------------------------------------------------------- Create ID
8753: sub generate_coursenum {
8754: my ($udom,$crstype) = @_;
8755: my $domdesc = &domain($udom);
8756: return 'error: invalid domain' if ($domdesc eq '');
8757: my $first;
8758: if ($crstype eq 'Community') {
8759: $first = '0';
8760: } else {
8761: $first = int(1+rand(9));
8762: }
8763: my $uname=$first.
8764: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8765: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8766: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8767: # ----------------------------------------------- Make sure that does not exist
8768: my $uhome=&homeserver($uname,$udom,'true');
8769: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8770: if ($crstype eq 'Community') {
8771: $first = '0';
8772: } else {
8773: $first = int(1+rand(9));
8774: }
8775: $uname=$first.
8776: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8777: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8778: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8779: $uhome=&homeserver($uname,$udom,'true');
8780: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8781: return 'error: unable to generate unique course-ID';
8782: }
8783: }
8784: return $uname;
8785: }
8786:
8787: sub is_course {
8788: my ($cdom, $cnum) = scalar(@_) == 1 ?
8789: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8790:
8791: return unless $cdom and $cnum;
8792:
8793: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8794: '.');
8795:
8796: return unless(exists($courses{$cdom.'_'.$cnum}));
8797: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8798: }
8799:
8800: sub store_userdata {
8801: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8802: my $result;
8803: if ($datakey ne '') {
8804: if (ref($storehash) eq 'HASH') {
8805: if ($udom eq '' || $uname eq '') {
8806: $udom = $env{'user.domain'};
8807: $uname = $env{'user.name'};
8808: }
8809: my $uhome=&homeserver($uname,$udom);
8810: if (($uhome eq '') || ($uhome eq 'no_host')) {
8811: $result = 'error: no_host';
8812: } else {
8813: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8814: $storehash->{'host'} = $perlvar{'lonHostID'};
8815:
8816: my $namevalue='';
8817: foreach my $key (keys(%{$storehash})) {
8818: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8819: }
8820: $namevalue=~s/\&$//;
8821: unless ($namespace eq 'courserequests') {
8822: $datakey = &escape($datakey);
8823: }
8824: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8825: $namevalue,$uhome);
8826: }
8827: } else {
8828: $result = 'error: data to store was not a hash reference';
8829: }
8830: } else {
8831: $result= 'error: invalid requestkey';
8832: }
8833: return $result;
8834: }
8835:
8836: # ---------------------------------------------------------- Assign Custom Role
8837:
8838: sub assigncustomrole {
8839: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8840: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8841: $end,$start,$deleteflag,$selfenroll,$context);
8842: }
8843:
8844: # ----------------------------------------------------------------- Revoke Role
8845:
8846: sub revokerole {
8847: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8848: my $now=time;
8849: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8850: }
8851:
8852: # ---------------------------------------------------------- Revoke Custom Role
8853:
8854: sub revokecustomrole {
8855: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8856: my $now=time;
8857: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8858: $deleteflag,$selfenroll,$context);
8859: }
8860:
8861: # ------------------------------------------------------------ Disk usage
8862: sub diskusage {
8863: my ($udom,$uname,$directorypath,$getpropath)=@_;
8864: $directorypath =~ s/\/$//;
8865: my $listing=&reply('du2:'.&escape($directorypath).':'
8866: .&escape($getpropath).':'.&escape($uname).':'
8867: .&escape($udom),homeserver($uname,$udom));
8868: if ($listing eq 'unknown_cmd') {
8869: if ($getpropath) {
8870: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8871: }
8872: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8873: }
8874: return $listing;
8875: }
8876:
8877: sub is_locked {
8878: my ($file_name, $domain, $user, $which) = @_;
8879: my @check;
8880: my $is_locked;
8881: push (@check,$file_name);
8882: my %locked = &get('file_permissions',\@check,
8883: $env{'user.domain'},$env{'user.name'});
8884: my ($tmp)=keys(%locked);
8885: if ($tmp=~/^error:/) { undef(%locked); }
8886:
8887: if (ref($locked{$file_name}) eq 'ARRAY') {
8888: $is_locked = 'false';
8889: foreach my $entry (@{$locked{$file_name}}) {
8890: if (ref($entry) eq 'ARRAY') {
8891: $is_locked = 'true';
8892: if (ref($which) eq 'ARRAY') {
8893: push(@{$which},$entry);
8894: } else {
8895: last;
8896: }
8897: }
8898: }
8899: } else {
8900: $is_locked = 'false';
8901: }
8902: return $is_locked;
8903: }
8904:
8905: sub declutter_portfile {
8906: my ($file) = @_;
8907: $file =~ s{^(/portfolio/|portfolio/)}{/};
8908: return $file;
8909: }
8910:
8911: # ------------------------------------------------------------- Mark as Read Only
8912:
8913: sub mark_as_readonly {
8914: my ($domain,$user,$files,$what) = @_;
8915: my %current_permissions = &dump('file_permissions',$domain,$user);
8916: my ($tmp)=keys(%current_permissions);
8917: if ($tmp=~/^error:/) { undef(%current_permissions); }
8918: foreach my $file (@{$files}) {
8919: $file = &declutter_portfile($file);
8920: push(@{$current_permissions{$file}},$what);
8921: }
8922: &put('file_permissions',\%current_permissions,$domain,$user);
8923: return;
8924: }
8925:
8926: # ------------------------------------------------------------Save Selected Files
8927:
8928: sub save_selected_files {
8929: my ($user, $path, @files) = @_;
8930: my $filename = $user."savedfiles";
8931: my @other_files = &files_not_in_path($user, $path);
8932: open (OUT, '>'.$tmpdir.$filename);
8933: foreach my $file (@files) {
8934: print (OUT $env{'form.currentpath'}.$file."\n");
8935: }
8936: foreach my $file (@other_files) {
8937: print (OUT $file."\n");
8938: }
8939: close (OUT);
8940: return 'ok';
8941: }
8942:
8943: sub clear_selected_files {
8944: my ($user) = @_;
8945: my $filename = $user."savedfiles";
8946: open (OUT, '>'.LONCAPA::tempdir().$filename);
8947: print (OUT undef);
8948: close (OUT);
8949: return ("ok");
8950: }
8951:
8952: sub files_in_path {
8953: my ($user, $path) = @_;
8954: my $filename = $user."savedfiles";
8955: my %return_files;
8956: open (IN, '<'.LONCAPA::tempdir().$filename);
8957: while (my $line_in = <IN>) {
8958: chomp ($line_in);
8959: my @paths_and_file = split (m!/!, $line_in);
8960: my $file_part = pop (@paths_and_file);
8961: my $path_part = join ('/', @paths_and_file);
8962: $path_part.='/';
8963: my $path_and_file = $path_part.$file_part;
8964: if ($path_part eq $path) {
8965: $return_files{$file_part}= 'selected';
8966: }
8967: }
8968: close (IN);
8969: return (\%return_files);
8970: }
8971:
8972: # called in portfolio select mode, to show files selected NOT in current directory
8973: sub files_not_in_path {
8974: my ($user, $path) = @_;
8975: my $filename = $user."savedfiles";
8976: my @return_files;
8977: my $path_part;
8978: open(IN, '<'.LONCAPA::.$filename);
8979: while (my $line = <IN>) {
8980: #ok, I know it's clunky, but I want it to work
8981: my @paths_and_file = split(m|/|, $line);
8982: my $file_part = pop(@paths_and_file);
8983: chomp($file_part);
8984: my $path_part = join('/', @paths_and_file);
8985: $path_part .= '/';
8986: my $path_and_file = $path_part.$file_part;
8987: if ($path_part ne $path) {
8988: push(@return_files, ($path_and_file));
8989: }
8990: }
8991: close(OUT);
8992: return (@return_files);
8993: }
8994:
8995: #----------------------------------------------Get portfolio file permissions
8996:
8997: sub get_portfile_permissions {
8998: my ($domain,$user) = @_;
8999: my %current_permissions = &dump('file_permissions',$domain,$user);
9000: my ($tmp)=keys(%current_permissions);
9001: if ($tmp=~/^error:/) { undef(%current_permissions); }
9002: return \%current_permissions;
9003: }
9004:
9005: #---------------------------------------------Get portfolio file access controls
9006:
9007: sub get_access_controls {
9008: my ($current_permissions,$group,$file) = @_;
9009: my %access;
9010: my $real_file = $file;
9011: $file =~ s/\.meta$//;
9012: if (defined($file)) {
9013: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9014: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9015: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9016: }
9017: }
9018: } else {
9019: foreach my $key (keys(%{$current_permissions})) {
9020: if ($key =~ /\0accesscontrol$/) {
9021: if (defined($group)) {
9022: if ($key !~ m-^\Q$group\E/-) {
9023: next;
9024: }
9025: }
9026: my ($fullpath) = split(/\0/,$key);
9027: if (ref($$current_permissions{$key}) eq 'HASH') {
9028: foreach my $control (keys(%{$$current_permissions{$key}})) {
9029: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9030: }
9031: }
9032: }
9033: }
9034: }
9035: return %access;
9036: }
9037:
9038: sub modify_access_controls {
9039: my ($file_name,$changes,$domain,$user)=@_;
9040: my ($outcome,$deloutcome);
9041: my %store_permissions;
9042: my %new_values;
9043: my %new_control;
9044: my %translation;
9045: my @deletions = ();
9046: my $now = time;
9047: if (exists($$changes{'activate'})) {
9048: if (ref($$changes{'activate'}) eq 'HASH') {
9049: my @newitems = sort(keys(%{$$changes{'activate'}}));
9050: my $numnew = scalar(@newitems);
9051: for (my $i=0; $i<$numnew; $i++) {
9052: my $newkey = $newitems[$i];
9053: my $newid = &Apache::loncommon::get_cgi_id();
9054: if ($newkey =~ /^\d+:/) {
9055: $newkey =~ s/^(\d+)/$newid/;
9056: $translation{$1} = $newid;
9057: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9058: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9059: $translation{$1} = $newid;
9060: }
9061: $new_values{$file_name."\0".$newkey} =
9062: $$changes{'activate'}{$newitems[$i]};
9063: $new_control{$newkey} = $now;
9064: }
9065: }
9066: }
9067: my %todelete;
9068: my %changed_items;
9069: foreach my $action ('delete','update') {
9070: if (exists($$changes{$action})) {
9071: if (ref($$changes{$action}) eq 'HASH') {
9072: foreach my $key (keys(%{$$changes{$action}})) {
9073: my ($itemnum) = ($key =~ /^([^:]+):/);
9074: if ($action eq 'delete') {
9075: $todelete{$itemnum} = 1;
9076: } else {
9077: $changed_items{$itemnum} = $key;
9078: }
9079: }
9080: }
9081: }
9082: }
9083: # get lock on access controls for file.
9084: my $lockhash = {
9085: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9086: ':'.$env{'user.domain'},
9087: };
9088: my $tries = 0;
9089: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9090:
9091: while (($gotlock ne 'ok') && $tries <3) {
9092: $tries ++;
9093: sleep 1;
9094: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9095: }
9096: if ($gotlock eq 'ok') {
9097: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9098: my ($tmp)=keys(%curr_permissions);
9099: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9100: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9101: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9102: if (ref($curr_controls) eq 'HASH') {
9103: foreach my $control_item (keys(%{$curr_controls})) {
9104: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9105: if (defined($todelete{$itemnum})) {
9106: push(@deletions,$file_name."\0".$control_item);
9107: } else {
9108: if (defined($changed_items{$itemnum})) {
9109: $new_control{$changed_items{$itemnum}} = $now;
9110: push(@deletions,$file_name."\0".$control_item);
9111: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9112: } else {
9113: $new_control{$control_item} = $$curr_controls{$control_item};
9114: }
9115: }
9116: }
9117: }
9118: }
9119: my ($group);
9120: if (&is_course($domain,$user)) {
9121: ($group,my $file) = split(/\//,$file_name,2);
9122: }
9123: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9124: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9125: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9126: # remove lock
9127: my @del_lock = ($file_name."\0".'locked_access_records');
9128: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9129: my $sqlresult =
9130: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9131: $group);
9132: } else {
9133: $outcome = "error: could not obtain lockfile\n";
9134: }
9135: return ($outcome,$deloutcome,\%new_values,\%translation);
9136: }
9137:
9138: sub make_public_indefinitely {
9139: my ($requrl) = @_;
9140: my $now = time;
9141: my $action = 'activate';
9142: my $aclnum = 0;
9143: if (&is_portfolio_url($requrl)) {
9144: my (undef,$udom,$unum,$file_name,$group) =
9145: &parse_portfolio_url($requrl);
9146: my $current_perms = &get_portfile_permissions($udom,$unum);
9147: my %access_controls = &get_access_controls($current_perms,
9148: $group,$file_name);
9149: foreach my $key (keys(%{$access_controls{$file_name}})) {
9150: my ($num,$scope,$end,$start) =
9151: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9152: if ($scope eq 'public') {
9153: if ($start <= $now && $end == 0) {
9154: $action = 'none';
9155: } else {
9156: $action = 'update';
9157: $aclnum = $num;
9158: }
9159: last;
9160: }
9161: }
9162: if ($action eq 'none') {
9163: return 'ok';
9164: } else {
9165: my %changes;
9166: my $newend = 0;
9167: my $newstart = $now;
9168: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9169: $changes{$action}{$newkey} = {
9170: type => 'public',
9171: time => {
9172: start => $newstart,
9173: end => $newend,
9174: },
9175: };
9176: my ($outcome,$deloutcome,$new_values,$translation) =
9177: &modify_access_controls($file_name,\%changes,$udom,$unum);
9178: return $outcome;
9179: }
9180: } else {
9181: return 'invalid';
9182: }
9183: }
9184:
9185: #------------------------------------------------------Get Marked as Read Only
9186:
9187: sub get_marked_as_readonly {
9188: my ($domain,$user,$what,$group) = @_;
9189: my $current_permissions = &get_portfile_permissions($domain,$user);
9190: my @readonly_files;
9191: my $cmp1=$what;
9192: if (ref($what)) { $cmp1=join('',@{$what}) };
9193: while (my ($file_name,$value) = each(%{$current_permissions})) {
9194: if (defined($group)) {
9195: if ($file_name !~ m-^\Q$group\E/-) {
9196: next;
9197: }
9198: }
9199: if (ref($value) eq "ARRAY"){
9200: foreach my $stored_what (@{$value}) {
9201: my $cmp2=$stored_what;
9202: if (ref($stored_what) eq 'ARRAY') {
9203: $cmp2=join('',@{$stored_what});
9204: }
9205: if ($cmp1 eq $cmp2) {
9206: push(@readonly_files, $file_name);
9207: last;
9208: } elsif (!defined($what)) {
9209: push(@readonly_files, $file_name);
9210: last;
9211: }
9212: }
9213: }
9214: }
9215: return @readonly_files;
9216: }
9217: #-----------------------------------------------------------Get Marked as Read Only Hash
9218:
9219: sub get_marked_as_readonly_hash {
9220: my ($current_permissions,$group,$what) = @_;
9221: my %readonly_files;
9222: while (my ($file_name,$value) = each(%{$current_permissions})) {
9223: if (defined($group)) {
9224: if ($file_name !~ m-^\Q$group\E/-) {
9225: next;
9226: }
9227: }
9228: if (ref($value) eq "ARRAY"){
9229: foreach my $stored_what (@{$value}) {
9230: if (ref($stored_what) eq 'ARRAY') {
9231: foreach my $lock_descriptor(@{$stored_what}) {
9232: if ($lock_descriptor eq 'graded') {
9233: $readonly_files{$file_name} = 'graded';
9234: } elsif ($lock_descriptor eq 'handback') {
9235: $readonly_files{$file_name} = 'handback';
9236: } else {
9237: if (!exists($readonly_files{$file_name})) {
9238: $readonly_files{$file_name} = 'locked';
9239: }
9240: }
9241: }
9242: }
9243: }
9244: }
9245: }
9246: return %readonly_files;
9247: }
9248: # ------------------------------------------------------------ Unmark as Read Only
9249:
9250: sub unmark_as_readonly {
9251: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9252: # for portfolio submissions, $what contains [$symb,$crsid]
9253: my ($domain,$user,$what,$file_name,$group) = @_;
9254: $file_name = &declutter_portfile($file_name);
9255: my $symb_crs = $what;
9256: if (ref($what)) { $symb_crs=join('',@$what); }
9257: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9258: my ($tmp)=keys(%current_permissions);
9259: if ($tmp=~/^error:/) { undef(%current_permissions); }
9260: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9261: foreach my $file (@readonly_files) {
9262: my $clean_file = &declutter_portfile($file);
9263: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9264: my $current_locks = $current_permissions{$file};
9265: my @new_locks;
9266: my @del_keys;
9267: if (ref($current_locks) eq "ARRAY"){
9268: foreach my $locker (@{$current_locks}) {
9269: my $compare=$locker;
9270: if (ref($locker) eq 'ARRAY') {
9271: $compare=join('',@{$locker});
9272: if ($compare ne $symb_crs) {
9273: push(@new_locks, $locker);
9274: }
9275: }
9276: }
9277: if (scalar(@new_locks) > 0) {
9278: $current_permissions{$file} = \@new_locks;
9279: } else {
9280: push(@del_keys, $file);
9281: &del('file_permissions',\@del_keys, $domain, $user);
9282: delete($current_permissions{$file});
9283: }
9284: }
9285: }
9286: &put('file_permissions',\%current_permissions,$domain,$user);
9287: return;
9288: }
9289:
9290: # ------------------------------------------------------------ Directory lister
9291:
9292: sub dirlist {
9293: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9294: $uri=~s/^\///;
9295: $uri=~s/\/$//;
9296: my ($udom, $uname);
9297: if ($getuserdir) {
9298: $udom = $userdomain;
9299: $uname = $username;
9300: } else {
9301: (undef,$udom,$uname)=split(/\//,$uri);
9302: if(defined($userdomain)) {
9303: $udom = $userdomain;
9304: }
9305: if(defined($username)) {
9306: $uname = $username;
9307: }
9308: }
9309: my ($dirRoot,$listing,@listing_results);
9310:
9311: $dirRoot = $perlvar{'lonDocRoot'};
9312: if (defined($getpropath)) {
9313: $dirRoot = &propath($udom,$uname);
9314: $dirRoot =~ s/\/$//;
9315: } elsif (defined($getuserdir)) {
9316: my $subdir=$uname.'__';
9317: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9318: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9319: ."/$udom/$subdir/$uname";
9320: } elsif (defined($alternateRoot)) {
9321: $dirRoot = $alternateRoot;
9322: }
9323:
9324: if($udom) {
9325: if($uname) {
9326: my $uhome = &homeserver($uname,$udom);
9327: if ($uhome eq 'no_host') {
9328: return ([],'no_host');
9329: }
9330: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9331: .$getuserdir.':'.&escape($dirRoot)
9332: .':'.&escape($uname).':'.&escape($udom),$uhome);
9333: if ($listing eq 'unknown_cmd') {
9334: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9335: } else {
9336: @listing_results = map { &unescape($_); } split(/:/,$listing);
9337: }
9338: if ($listing eq 'unknown_cmd') {
9339: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9340: @listing_results = split(/:/,$listing);
9341: } else {
9342: @listing_results = map { &unescape($_); } split(/:/,$listing);
9343: }
9344: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9345: ($listing eq 'rejected') || ($listing eq 'refused') ||
9346: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9347: return ([],$listing);
9348: } else {
9349: return (\@listing_results);
9350: }
9351: } elsif(!$alternateRoot) {
9352: my (%allusers,%listerror);
9353: my %servers = &get_servers($udom,'library');
9354: foreach my $tryserver (keys(%servers)) {
9355: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9356: &escape($udom),$tryserver);
9357: if ($listing eq 'unknown_cmd') {
9358: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9359: $udom, $tryserver);
9360: } else {
9361: @listing_results = map { &unescape($_); } split(/:/,$listing);
9362: }
9363: if ($listing eq 'unknown_cmd') {
9364: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9365: $udom, $tryserver);
9366: @listing_results = split(/:/,$listing);
9367: } else {
9368: @listing_results =
9369: map { &unescape($_); } split(/:/,$listing);
9370: }
9371: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9372: ($listing eq 'rejected') || ($listing eq 'refused') ||
9373: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9374: $listerror{$tryserver} = $listing;
9375: } else {
9376: foreach my $line (@listing_results) {
9377: my ($entry) = split(/&/,$line,2);
9378: $allusers{$entry} = 1;
9379: }
9380: }
9381: }
9382: my @alluserslist=();
9383: foreach my $user (sort(keys(%allusers))) {
9384: push(@alluserslist,$user.'&user');
9385: }
9386: return (\@alluserslist);
9387: } else {
9388: return ([],'missing username');
9389: }
9390: } elsif(!defined($getpropath)) {
9391: my $path = $perlvar{'lonDocRoot'}.'/res/';
9392: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9393: return (\@all_domains);
9394: } else {
9395: return ([],'missing domain');
9396: }
9397: }
9398:
9399: # --------------------------------------------- GetFileTimestamp
9400: # This function utilizes dirlist and returns the date stamp for
9401: # when it was last modified. It will also return an error of -1
9402: # if an error occurs
9403:
9404: sub GetFileTimestamp {
9405: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9406: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9407: $studentName = &LONCAPA::clean_username($studentName);
9408: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9409: undef,$getuserdir);
9410: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9411: return -1;
9412: }
9413: if (ref($fileref) eq 'ARRAY') {
9414: my @stats = split('&',$fileref->[0]);
9415: # @stats contains first the filename, then the stat output
9416: return $stats[10]; # so this is 10 instead of 9.
9417: } else {
9418: return -1;
9419: }
9420: }
9421:
9422: sub stat_file {
9423: my ($uri) = @_;
9424: $uri = &clutter_with_no_wrapper($uri);
9425:
9426: my ($udom,$uname,$file);
9427: if ($uri =~ m-^/(uploaded|editupload)/-) {
9428: ($udom,$uname,$file) =
9429: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9430: $file = 'userfiles/'.$file;
9431: }
9432: if ($uri =~ m-^/res/-) {
9433: ($udom,$uname) =
9434: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9435: $file = $uri;
9436: }
9437:
9438: if (!$udom || !$uname || !$file) {
9439: # unable to handle the uri
9440: return ();
9441: }
9442: my $getpropath;
9443: if ($file =~ /^userfiles\//) {
9444: $getpropath = 1;
9445: }
9446: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9447: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9448: return ();
9449: } else {
9450: if (ref($listref) eq 'ARRAY') {
9451: my @stats = split('&',$listref->[0]);
9452: shift(@stats); #filename is first
9453: return @stats;
9454: }
9455: }
9456: return ();
9457: }
9458:
9459: # -------------------------------------------------------- Value of a Condition
9460:
9461: # gets the value of a specific preevaluated condition
9462: # stored in the string $env{user.state.<cid>}
9463: # or looks up a condition reference in the bighash and if if hasn't
9464: # already been evaluated recurses into docondval to get the value of
9465: # the condition, then memoizing it to
9466: # $env{user.state.<cid>.<condition>}
9467: sub directcondval {
9468: my $number=shift;
9469: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9470: &Apache::lonuserstate::evalstate();
9471: }
9472: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9473: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9474: } elsif ($number =~ /^_/) {
9475: my $sub_condition;
9476: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9477: &GDBM_READER(),0640)) {
9478: $sub_condition=$bighash{'conditions'.$number};
9479: untie(%bighash);
9480: }
9481: my $value = &docondval($sub_condition);
9482: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9483: return $value;
9484: }
9485: if ($env{'user.state.'.$env{'request.course.id'}}) {
9486: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9487: } else {
9488: return 2;
9489: }
9490: }
9491:
9492: # get the collection of conditions for this resource
9493: sub condval {
9494: my $condidx=shift;
9495: my $allpathcond='';
9496: foreach my $cond (split(/\|/,$condidx)) {
9497: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9498: $allpathcond.=
9499: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9500: }
9501: }
9502: $allpathcond=~s/\|$//;
9503: return &docondval($allpathcond);
9504: }
9505:
9506: #evaluates an expression of conditions
9507: sub docondval {
9508: my ($allpathcond) = @_;
9509: my $result=0;
9510: if ($env{'request.course.id'}
9511: && defined($allpathcond)) {
9512: my $operand='|';
9513: my @stack;
9514: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9515: if ($chunk eq '(') {
9516: push @stack,($operand,$result);
9517: } elsif ($chunk eq ')') {
9518: my $before=pop @stack;
9519: if (pop @stack eq '&') {
9520: $result=$result>$before?$before:$result;
9521: } else {
9522: $result=$result>$before?$result:$before;
9523: }
9524: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9525: $operand=$chunk;
9526: } else {
9527: my $new=directcondval($chunk);
9528: if ($operand eq '&') {
9529: $result=$result>$new?$new:$result;
9530: } else {
9531: $result=$result>$new?$result:$new;
9532: }
9533: }
9534: }
9535: }
9536: return $result;
9537: }
9538:
9539: # ---------------------------------------------------- Devalidate courseresdata
9540:
9541: sub devalidatecourseresdata {
9542: my ($coursenum,$coursedomain)=@_;
9543: my $hashid=$coursenum.':'.$coursedomain;
9544: &devalidate_cache_new('courseres',$hashid);
9545: }
9546:
9547:
9548: # --------------------------------------------------- Course Resourcedata Query
9549: #
9550: # Parameters:
9551: # $coursenum - Number of the course.
9552: # $coursedomain - Domain at which the course was created.
9553: # Returns:
9554: # A hash of the course parameters along (I think) with timestamps
9555: # and version info.
9556:
9557: sub get_courseresdata {
9558: my ($coursenum,$coursedomain)=@_;
9559: my $coursehom=&homeserver($coursenum,$coursedomain);
9560: my $hashid=$coursenum.':'.$coursedomain;
9561: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9562: my %dumpreply;
9563: unless (defined($cached)) {
9564: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9565: $result=\%dumpreply;
9566: my ($tmp) = keys(%dumpreply);
9567: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9568: &do_cache_new('courseres',$hashid,$result,600);
9569: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9570: return $tmp;
9571: } elsif ($tmp =~ /^(error)/) {
9572: $result=undef;
9573: &do_cache_new('courseres',$hashid,$result,600);
9574: }
9575: }
9576: return $result;
9577: }
9578:
9579: sub devalidateuserresdata {
9580: my ($uname,$udom)=@_;
9581: my $hashid="$udom:$uname";
9582: &devalidate_cache_new('userres',$hashid);
9583: }
9584:
9585: sub get_userresdata {
9586: my ($uname,$udom)=@_;
9587: #most student don\'t have any data set, check if there is some data
9588: if (&EXT_cache_status($udom,$uname)) { return undef; }
9589:
9590: my $hashid="$udom:$uname";
9591: my ($result,$cached)=&is_cached_new('userres',$hashid);
9592: if (!defined($cached)) {
9593: my %resourcedata=&dump('resourcedata',$udom,$uname);
9594: $result=\%resourcedata;
9595: &do_cache_new('userres',$hashid,$result,600);
9596: }
9597: my ($tmp)=keys(%$result);
9598: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9599: return $result;
9600: }
9601: #error 2 occurs when the .db doesn't exist
9602: if ($tmp!~/error: 2 /) {
9603: &logthis("<font color=\"blue\">WARNING:".
9604: " Trying to get resource data for ".
9605: $uname." at ".$udom.": ".
9606: $tmp."</font>");
9607: } elsif ($tmp=~/error: 2 /) {
9608: #&EXT_cache_set($udom,$uname);
9609: &do_cache_new('userres',$hashid,undef,600);
9610: undef($tmp); # not really an error so don't send it back
9611: }
9612: return $tmp;
9613: }
9614: #----------------------------------------------- resdata - return resource data
9615: # Purpose:
9616: # Return resource data for either users or for a course.
9617: # Parameters:
9618: # $name - Course/user name.
9619: # $domain - Name of the domain the user/course is registered on.
9620: # $type - Type of thing $name is (must be 'course' or 'user'
9621: # @which - Array of names of resources desired.
9622: # Returns:
9623: # The value of the first reasource in @which that is found in the
9624: # resource hash.
9625: # Exceptional Conditions:
9626: # If the $type passed in is not valid (not the string 'course' or
9627: # 'user', an undefined reference is returned.
9628: # If none of the resources are found, an undef is returned
9629: sub resdata {
9630: my ($name,$domain,$type,@which)=@_;
9631: my $result;
9632: if ($type eq 'course') {
9633: $result=&get_courseresdata($name,$domain);
9634: } elsif ($type eq 'user') {
9635: $result=&get_userresdata($name,$domain);
9636: }
9637: if (!ref($result)) { return $result; }
9638: foreach my $item (@which) {
9639: if (defined($result->{$item->[0]})) {
9640: return [$result->{$item->[0]},$item->[1]];
9641: }
9642: }
9643: return undef;
9644: }
9645:
9646: sub get_numsuppfiles {
9647: my ($cnum,$cdom,$ignorecache)=@_;
9648: my $hashid=$cnum.':'.$cdom;
9649: my ($suppcount,$cached);
9650: unless ($ignorecache) {
9651: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
9652: }
9653: unless (defined($cached)) {
9654: my $chome=&homeserver($cnum,$cdom);
9655: unless ($chome eq 'no_host') {
9656: ($suppcount,my $errors) = (0,0);
9657: my $suppmap = 'supplemental.sequence';
9658: ($suppcount,$errors) =
9659: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
9660: }
9661: &do_cache_new('suppcount',$hashid,$suppcount,600);
9662: }
9663: return $suppcount;
9664: }
9665:
9666: #
9667: # EXT resource caching routines
9668: #
9669:
9670: sub clear_EXT_cache_status {
9671: &delenv('cache.EXT.');
9672: }
9673:
9674: sub EXT_cache_status {
9675: my ($target_domain,$target_user) = @_;
9676: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9677: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9678: # We know already the user has no data
9679: return 1;
9680: } else {
9681: return 0;
9682: }
9683: }
9684:
9685: sub EXT_cache_set {
9686: my ($target_domain,$target_user) = @_;
9687: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9688: #&appenv({$cachename => time});
9689: }
9690:
9691: # --------------------------------------------------------- Value of a Variable
9692: sub EXT {
9693:
9694: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
9695: unless ($varname) { return ''; }
9696: #get real user name/domain, courseid and symb
9697: my $courseid;
9698: my $publicuser;
9699: if ($symbparm) {
9700: $symbparm=&get_symb_from_alias($symbparm);
9701: }
9702: if (!($uname && $udom)) {
9703: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9704: if (!$symbparm) { $symbparm=$cursymb; }
9705: } else {
9706: $courseid=$env{'request.course.id'};
9707: }
9708: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9709: my $rest;
9710: if (defined($therest[0])) {
9711: $rest=join('.',@therest);
9712: } else {
9713: $rest='';
9714: }
9715:
9716: my $qualifierrest=$qualifier;
9717: if ($rest) { $qualifierrest.='.'.$rest; }
9718: my $spacequalifierrest=$space;
9719: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9720: if ($realm eq 'user') {
9721: # --------------------------------------------------------------- user.resource
9722: if ($space eq 'resource') {
9723: if ( (defined($Apache::lonhomework::parsing_a_problem)
9724: || defined($Apache::lonhomework::parsing_a_task))
9725: &&
9726: ($symbparm eq &symbread()) ) {
9727: # if we are in the middle of processing the resource the
9728: # get the value we are planning on committing
9729: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9730: return $Apache::lonhomework::results{$qualifierrest};
9731: } else {
9732: return $Apache::lonhomework::history{$qualifierrest};
9733: }
9734: } else {
9735: my %restored;
9736: if ($publicuser || $env{'request.state'} eq 'construct') {
9737: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9738: } else {
9739: %restored=&restore($symbparm,$courseid,$udom,$uname);
9740: }
9741: return $restored{$qualifierrest};
9742: }
9743: # ----------------------------------------------------------------- user.access
9744: } elsif ($space eq 'access') {
9745: # FIXME - not supporting calls for a specific user
9746: return &allowed($qualifier,$rest);
9747: # ------------------------------------------ user.preferences, user.environment
9748: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9749: if (($uname eq $env{'user.name'}) &&
9750: ($udom eq $env{'user.domain'})) {
9751: return $env{join('.',('environment',$qualifierrest))};
9752: } else {
9753: my %returnhash;
9754: if (!$publicuser) {
9755: %returnhash=&userenvironment($udom,$uname,
9756: $qualifierrest);
9757: }
9758: return $returnhash{$qualifierrest};
9759: }
9760: # ----------------------------------------------------------------- user.course
9761: } elsif ($space eq 'course') {
9762: # FIXME - not supporting calls for a specific user
9763: return $env{join('.',('request.course',$qualifier))};
9764: # ------------------------------------------------------------------- user.role
9765: } elsif ($space eq 'role') {
9766: # FIXME - not supporting calls for a specific user
9767: my ($role,$where)=split(/\./,$env{'request.role'});
9768: if ($qualifier eq 'value') {
9769: return $role;
9770: } elsif ($qualifier eq 'extent') {
9771: return $where;
9772: }
9773: # ----------------------------------------------------------------- user.domain
9774: } elsif ($space eq 'domain') {
9775: return $udom;
9776: # ------------------------------------------------------------------- user.name
9777: } elsif ($space eq 'name') {
9778: return $uname;
9779: # ---------------------------------------------------- Any other user namespace
9780: } else {
9781: my %reply;
9782: if (!$publicuser) {
9783: %reply=&get($space,[$qualifierrest],$udom,$uname);
9784: }
9785: return $reply{$qualifierrest};
9786: }
9787: } elsif ($realm eq 'query') {
9788: # ---------------------------------------------- pull stuff out of query string
9789: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9790: [$spacequalifierrest]);
9791: return $env{'form.'.$spacequalifierrest};
9792: } elsif ($realm eq 'request') {
9793: # ------------------------------------------------------------- request.browser
9794: if ($space eq 'browser') {
9795: return $env{'browser.'.$qualifier};
9796: # ------------------------------------------------------------ request.filename
9797: } else {
9798: return $env{'request.'.$spacequalifierrest};
9799: }
9800: } elsif ($realm eq 'course') {
9801: # ---------------------------------------------------------- course.description
9802: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9803: } elsif ($realm eq 'resource') {
9804:
9805: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9806: if (!$symbparm) { $symbparm=&symbread(); }
9807: }
9808:
9809: if ($qualifier eq '') {
9810: if ($space eq 'title') {
9811: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9812: return &gettitle($symbparm);
9813: }
9814:
9815: if ($space eq 'map') {
9816: my ($map) = &decode_symb($symbparm);
9817: return &symbread($map);
9818: }
9819: if ($space eq 'maptitle') {
9820: my ($map) = &decode_symb($symbparm);
9821: return &gettitle($map);
9822: }
9823: if ($space eq 'filename') {
9824: if ($symbparm) {
9825: return &clutter((&decode_symb($symbparm))[2]);
9826: }
9827: return &hreflocation('',$env{'request.filename'});
9828: }
9829:
9830: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
9831: if ($space eq 'visibleparts') {
9832: my $navmap = Apache::lonnavmaps::navmap->new();
9833: my $item;
9834: if (ref($navmap)) {
9835: my $res = $navmap->getBySymb($symbparm);
9836: my $parts = $res->parts();
9837: if (ref($parts) eq 'ARRAY') {
9838: $item = join(',',@{$parts});
9839: }
9840: undef($navmap);
9841: }
9842: return $item;
9843: }
9844: }
9845: }
9846:
9847: my ($section, $group, @groups);
9848: my ($courselevelm,$courselevel);
9849: if (($courseid eq '') && ($cid)) {
9850: $courseid = $cid;
9851: }
9852: if (($symbparm && $courseid) &&
9853: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
9854:
9855: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9856:
9857: # ----------------------------------------------------- Cascading lookup scheme
9858: my $symbp=$symbparm;
9859: my $mapp=&deversion((&decode_symb($symbp))[0]);
9860:
9861: my $symbparm=$symbp.'.'.$spacequalifierrest;
9862: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9863:
9864: if (($env{'user.name'} eq $uname) &&
9865: ($env{'user.domain'} eq $udom)) {
9866: $section=$env{'request.course.sec'};
9867: @groups = split(/:/,$env{'request.course.groups'});
9868: @groups=&sort_course_groups($courseid,@groups);
9869: } else {
9870: if (! defined($usection)) {
9871: $section=&getsection($udom,$uname,$courseid);
9872: } else {
9873: $section = $usection;
9874: }
9875: @groups = &get_users_groups($udom,$uname,$courseid);
9876: }
9877:
9878: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9879: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9880: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9881:
9882: $courselevel=$courseid.'.'.$spacequalifierrest;
9883: my $courselevelr=$courseid.'.'.$symbparm;
9884: $courselevelm=$courseid.'.'.$mapparm;
9885:
9886: # ----------------------------------------------------------- first, check user
9887:
9888: my $userreply=&resdata($uname,$udom,'user',
9889: ([$courselevelr,'resource'],
9890: [$courselevelm,'map' ],
9891: [$courselevel, 'course' ]));
9892: if (defined($userreply)) { return &get_reply($userreply); }
9893:
9894: # ------------------------------------------------ second, check some of course
9895: my $coursereply;
9896: if (@groups > 0) {
9897: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9898: $mapparm,$spacequalifierrest);
9899: if (defined($coursereply)) { return &get_reply($coursereply); }
9900: }
9901:
9902: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9903: $env{'course.'.$courseid.'.domain'},
9904: 'course',
9905: ([$seclevelr, 'resource'],
9906: [$seclevelm, 'map' ],
9907: [$seclevel, 'course' ],
9908: [$courselevelr,'resource']));
9909: if (defined($coursereply)) { return &get_reply($coursereply); }
9910:
9911: # ------------------------------------------------------ third, check map parms
9912: my %parmhash=();
9913: my $thisparm='';
9914: if (tie(%parmhash,'GDBM_File',
9915: $env{'request.course.fn'}.'_parms.db',
9916: &GDBM_READER(),0640)) {
9917: $thisparm=$parmhash{$symbparm};
9918: untie(%parmhash);
9919: }
9920: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9921: }
9922: # ------------------------------------------ fourth, look in resource metadata
9923:
9924: $spacequalifierrest=~s/\./\_/;
9925: my $filename;
9926: if (!$symbparm) { $symbparm=&symbread(); }
9927: if ($symbparm) {
9928: $filename=(&decode_symb($symbparm))[2];
9929: } else {
9930: $filename=$env{'request.filename'};
9931: }
9932: my $metadata=&metadata($filename,$spacequalifierrest);
9933: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9934: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9935: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9936:
9937: # ---------------------------------------------- fourth, look in rest of course
9938: if ($symbparm && defined($courseid) &&
9939: $courseid eq $env{'request.course.id'}) {
9940: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9941: $env{'course.'.$courseid.'.domain'},
9942: 'course',
9943: ([$courselevelm,'map' ],
9944: [$courselevel, 'course']));
9945: if (defined($coursereply)) { return &get_reply($coursereply); }
9946: }
9947: # ------------------------------------------------------------------ Cascade up
9948: unless ($space eq '0') {
9949: my @parts=split(/_/,$space);
9950: my $id=pop(@parts);
9951: my $part=join('_',@parts);
9952: if ($part eq '') { $part='0'; }
9953: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9954: $symbparm,$udom,$uname,$section,1);
9955: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9956: }
9957: if ($recurse) { return undef; }
9958: my $pack_def=&packages_tab_default($filename,$varname);
9959: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9960: # ---------------------------------------------------- Any other user namespace
9961: } elsif ($realm eq 'environment') {
9962: # ----------------------------------------------------------------- environment
9963: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9964: return $env{'environment.'.$spacequalifierrest};
9965: } else {
9966: if ($uname eq 'anonymous' && $udom eq '') {
9967: return '';
9968: }
9969: my %returnhash=&userenvironment($udom,$uname,
9970: $spacequalifierrest);
9971: return $returnhash{$spacequalifierrest};
9972: }
9973: } elsif ($realm eq 'system') {
9974: # ----------------------------------------------------------------- system.time
9975: if ($space eq 'time') {
9976: return time;
9977: }
9978: } elsif ($realm eq 'server') {
9979: # ----------------------------------------------------------------- system.time
9980: if ($space eq 'name') {
9981: return $ENV{'SERVER_NAME'};
9982: }
9983: }
9984: return '';
9985: }
9986:
9987: sub get_reply {
9988: my ($reply_value) = @_;
9989: if (ref($reply_value) eq 'ARRAY') {
9990: if (wantarray) {
9991: return @$reply_value;
9992: }
9993: return $reply_value->[0];
9994: } else {
9995: return $reply_value;
9996: }
9997: }
9998:
9999: sub check_group_parms {
10000: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
10001: my @groupitems = ();
10002: my $resultitem;
10003: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
10004: foreach my $group (@{$groups}) {
10005: foreach my $level (@levels) {
10006: my $item = $courseid.'.['.$group.'].'.$level->[0];
10007: push(@groupitems,[$item,$level->[1]]);
10008: }
10009: }
10010: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10011: $env{'course.'.$courseid.'.domain'},
10012: 'course',@groupitems);
10013: return $coursereply;
10014: }
10015:
10016: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10017: my ($courseid,@groups) = @_;
10018: @groups = sort(@groups);
10019: return @groups;
10020: }
10021:
10022: sub packages_tab_default {
10023: my ($uri,$varname)=@_;
10024: my (undef,$part,$name)=split(/\./,$varname);
10025:
10026: my (@extension,@specifics,$do_default);
10027: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10028: my ($pack_type,$pack_part)=split(/_/,$package,2);
10029: if ($pack_type eq 'default') {
10030: $do_default=1;
10031: } elsif ($pack_type eq 'extension') {
10032: push(@extension,[$package,$pack_type,$pack_part]);
10033: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10034: # only look at packages defaults for packages that this id is
10035: push(@specifics,[$package,$pack_type,$pack_part]);
10036: }
10037: }
10038: # first look for a package that matches the requested part id
10039: foreach my $package (@specifics) {
10040: my (undef,$pack_type,$pack_part)=@{$package};
10041: next if ($pack_part ne $part);
10042: if (defined($packagetab{"$pack_type&$name&default"})) {
10043: return $packagetab{"$pack_type&$name&default"};
10044: }
10045: }
10046: # look for any possible matching non extension_ package
10047: foreach my $package (@specifics) {
10048: my (undef,$pack_type,$pack_part)=@{$package};
10049: if (defined($packagetab{"$pack_type&$name&default"})) {
10050: return $packagetab{"$pack_type&$name&default"};
10051: }
10052: if ($pack_type eq 'part') { $pack_part='0'; }
10053: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10054: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10055: }
10056: }
10057: # look for any posible extension_ match
10058: foreach my $package (@extension) {
10059: my ($package,$pack_type)=@{$package};
10060: if (defined($packagetab{"$pack_type&$name&default"})) {
10061: return $packagetab{"$pack_type&$name&default"};
10062: }
10063: if (defined($packagetab{$package."&$name&default"})) {
10064: return $packagetab{$package."&$name&default"};
10065: }
10066: }
10067: # look for a global default setting
10068: if ($do_default && defined($packagetab{"default&$name&default"})) {
10069: return $packagetab{"default&$name&default"};
10070: }
10071: return undef;
10072: }
10073:
10074: sub add_prefix_and_part {
10075: my ($prefix,$part)=@_;
10076: my $keyroot;
10077: if (defined($prefix) && $prefix !~ /^__/) {
10078: # prefix that has a part already
10079: $keyroot=$prefix;
10080: } elsif (defined($prefix)) {
10081: # prefix that is missing a part
10082: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10083: } else {
10084: # no prefix at all
10085: if (defined($part)) { $keyroot='_'.$part; }
10086: }
10087: return $keyroot;
10088: }
10089:
10090: # ---------------------------------------------------------------- Get metadata
10091:
10092: my %metaentry;
10093: my %importedpartids;
10094: sub metadata {
10095: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10096: $uri=&declutter($uri);
10097: # if it is a non metadata possible uri return quickly
10098: if (($uri eq '') ||
10099: (($uri =~ m|^/*adm/|) &&
10100: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10101: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10102: return undef;
10103: }
10104: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
10105: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10106: return undef;
10107: }
10108: my $filename=$uri;
10109: $uri=~s/\.meta$//;
10110: #
10111: # Is the metadata already cached?
10112: # Look at timestamp of caching
10113: # Everything is cached by the main uri, libraries are never directly cached
10114: #
10115: if (!defined($liburi)) {
10116: my ($result,$cached)=&is_cached_new('meta',$uri);
10117: if (defined($cached)) { return $result->{':'.$what}; }
10118: }
10119: {
10120: # Imported parts would go here
10121: my %importedids=();
10122: my @origfileimportpartids=();
10123: my $importedparts=0;
10124: #
10125: # Is this a recursive call for a library?
10126: #
10127: # if (! exists($metacache{$uri})) {
10128: # $metacache{$uri}={};
10129: # }
10130: my $cachetime = 60*60;
10131: if ($liburi) {
10132: $liburi=&declutter($liburi);
10133: $filename=$liburi;
10134: } else {
10135: &devalidate_cache_new('meta',$uri);
10136: undef(%metaentry);
10137: }
10138: my %metathesekeys=();
10139: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10140: my $metastring;
10141: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10142: my $which = &hreflocation('','/'.($liburi || $uri));
10143: $metastring =
10144: &Apache::lonnet::ssi_body($which,
10145: ('grade_target' => 'meta'));
10146: $cachetime = 1; # only want this cached in the child not long term
10147: } elsif (($uri !~ m -^(editupload)/-) &&
10148: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10149: my $file=&filelocation('',&clutter($filename));
10150: #push(@{$metaentry{$uri.'.file'}},$file);
10151: $metastring=&getfile($file);
10152: }
10153: my $parser=HTML::LCParser->new(\$metastring);
10154: my $token;
10155: undef %metathesekeys;
10156: while ($token=$parser->get_token) {
10157: if ($token->[0] eq 'S') {
10158: if (defined($token->[2]->{'package'})) {
10159: #
10160: # This is a package - get package info
10161: #
10162: my $package=$token->[2]->{'package'};
10163: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10164: if (defined($token->[2]->{'id'})) {
10165: $keyroot.='_'.$token->[2]->{'id'};
10166: }
10167: if ($metaentry{':packages'}) {
10168: $metaentry{':packages'}.=','.$package.$keyroot;
10169: } else {
10170: $metaentry{':packages'}=$package.$keyroot;
10171: }
10172: foreach my $pack_entry (keys(%packagetab)) {
10173: my $part=$keyroot;
10174: $part=~s/^\_//;
10175: if ($pack_entry=~/^\Q$package\E\&/ ||
10176: $pack_entry=~/^\Q$package\E_0\&/) {
10177: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10178: # ignore package.tab specified default values
10179: # here &package_tab_default() will fetch those
10180: if ($subp eq 'default') { next; }
10181: my $value=$packagetab{$pack_entry};
10182: my $unikey;
10183: if ($pack =~ /_0$/) {
10184: $unikey='parameter_0_'.$name;
10185: $part=0;
10186: } else {
10187: $unikey='parameter'.$keyroot.'_'.$name;
10188: }
10189: if ($subp eq 'display') {
10190: $value.=' [Part: '.$part.']';
10191: }
10192: $metaentry{':'.$unikey.'.part'}=$part;
10193: $metathesekeys{$unikey}=1;
10194: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10195: $metaentry{':'.$unikey.'.'.$subp}=$value;
10196: }
10197: if (defined($metaentry{':'.$unikey.'.default'})) {
10198: $metaentry{':'.$unikey}=
10199: $metaentry{':'.$unikey.'.default'};
10200: }
10201: }
10202: }
10203: } else {
10204: #
10205: # This is not a package - some other kind of start tag
10206: #
10207: my $entry=$token->[1];
10208: my $unikey='';
10209:
10210: if ($entry eq 'import') {
10211: #
10212: # Importing a library here
10213: #
10214: my $location=$parser->get_text('/import');
10215: my $dir=$filename;
10216: $dir=~s|[^/]*$||;
10217: $location=&filelocation($dir,$location);
10218:
10219: my $importmode=$token->[2]->{'importmode'};
10220: if ($importmode eq 'problem') {
10221: # Import as problem/response
10222: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10223: } elsif ($importmode eq 'part') {
10224: # Import as part(s)
10225: $importedparts=1;
10226: # We need to get the original file and the imported file to get the part order correct
10227: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10228: # Load and inspect original file
10229: if ($#origfileimportpartids<0) {
10230: undef(%importedpartids);
10231: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10232: my $origfile=&getfile($origfilelocation);
10233: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10234: }
10235:
10236: # Load and inspect imported file
10237: my $impfile=&getfile($location);
10238: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10239: if ($#impfilepartids>=0) {
10240: # This problem had parts
10241: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10242: } else {
10243: # Importing by turning a single problem into a problem part
10244: # It gets the import-tags ID as part-ID
10245: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10246: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10247: }
10248: } else {
10249: # Normal import
10250: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10251: if (defined($token->[2]->{'id'})) {
10252: $unikey.='_'.$token->[2]->{'id'};
10253: }
10254: }
10255:
10256: if ($depthcount<20) {
10257: my $metadata =
10258: &metadata($uri,'keys', $location,$unikey,
10259: $depthcount+1);
10260: foreach my $meta (split(',',$metadata)) {
10261: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10262: $metathesekeys{$meta}=1;
10263: }
10264:
10265: }
10266: } else {
10267: #
10268: # Not importing, some other kind of non-package, non-library start tag
10269: #
10270: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10271: if (defined($token->[2]->{'id'})) {
10272: $unikey.='_'.$token->[2]->{'id'};
10273: }
10274: if (defined($token->[2]->{'name'})) {
10275: $unikey.='_'.$token->[2]->{'name'};
10276: }
10277: $metathesekeys{$unikey}=1;
10278: foreach my $param (@{$token->[3]}) {
10279: $metaentry{':'.$unikey.'.'.$param} =
10280: $token->[2]->{$param};
10281: }
10282: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10283: my $default=$metaentry{':'.$unikey.'.default'};
10284: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10285: # only ws inside the tag, and not in default, so use default
10286: # as value
10287: $metaentry{':'.$unikey}=$default;
10288: } elsif ( $internaltext =~ /\S/ ) {
10289: # something interesting inside the tag
10290: $metaentry{':'.$unikey}=$internaltext;
10291: } else {
10292: # no interesting values, don't set a default
10293: }
10294: # end of not-a-package not-a-library import
10295: }
10296: # end of not-a-package start tag
10297: }
10298: # the next is the end of "start tag"
10299: }
10300: }
10301: my ($extension) = ($uri =~ /\.(\w+)$/);
10302: $extension = lc($extension);
10303: if ($extension eq 'htm') { $extension='html'; }
10304:
10305: foreach my $key (keys(%packagetab)) {
10306: #no specific packages #how's our extension
10307: if ($key!~/^extension_\Q$extension\E&/) { next; }
10308: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10309: \%metathesekeys);
10310: }
10311:
10312: if (!exists($metaentry{':packages'})
10313: || $packagetab{"import_defaults&extension_$extension"}) {
10314: foreach my $key (keys(%packagetab)) {
10315: #no specific packages well let's get default then
10316: if ($key!~/^default&/) { next; }
10317: &metadata_create_package_def($uri,$key,'default',
10318: \%metathesekeys);
10319: }
10320: }
10321: # are there custom rights to evaluate
10322: if ($metaentry{':copyright'} eq 'custom') {
10323:
10324: #
10325: # Importing a rights file here
10326: #
10327: unless ($depthcount) {
10328: my $location=$metaentry{':customdistributionfile'};
10329: my $dir=$filename;
10330: $dir=~s|[^/]*$||;
10331: $location=&filelocation($dir,$location);
10332: my $rights_metadata =
10333: &metadata($uri,'keys',$location,'_rights',
10334: $depthcount+1);
10335: foreach my $rights (split(',',$rights_metadata)) {
10336: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10337: $metathesekeys{$rights}=1;
10338: }
10339: }
10340: }
10341: # uniqifiy package listing
10342: my %seen;
10343: my @uniq_packages =
10344: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10345: $metaentry{':packages'} = join(',',@uniq_packages);
10346:
10347: if ($importedparts) {
10348: # We had imported parts and need to rebuild partorder
10349: $metaentry{':partorder'}='';
10350: $metathesekeys{'partorder'}=1;
10351: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10352: if ($origfileimportpartids[$index] eq 'part') {
10353: # original part, part of the problem
10354: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10355: } else {
10356: # we have imported parts at this position
10357: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10358: }
10359: }
10360: $metaentry{':partorder'}=~s/^\,//;
10361: }
10362:
10363: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10364: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10365: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10366: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10367: # this is the end of "was not already recently cached
10368: }
10369: return $metaentry{':'.$what};
10370: }
10371:
10372: sub metadata_create_package_def {
10373: my ($uri,$key,$package,$metathesekeys)=@_;
10374: my ($pack,$name,$subp)=split(/\&/,$key);
10375: if ($subp eq 'default') { next; }
10376:
10377: if (defined($metaentry{':packages'})) {
10378: $metaentry{':packages'}.=','.$package;
10379: } else {
10380: $metaentry{':packages'}=$package;
10381: }
10382: my $value=$packagetab{$key};
10383: my $unikey;
10384: $unikey='parameter_0_'.$name;
10385: $metaentry{':'.$unikey.'.part'}=0;
10386: $$metathesekeys{$unikey}=1;
10387: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10388: $metaentry{':'.$unikey.'.'.$subp}=$value;
10389: }
10390: if (defined($metaentry{':'.$unikey.'.default'})) {
10391: $metaentry{':'.$unikey}=
10392: $metaentry{':'.$unikey.'.default'};
10393: }
10394: }
10395:
10396: sub metadata_generate_part0 {
10397: my ($metadata,$metacache,$uri) = @_;
10398: my %allnames;
10399: foreach my $metakey (keys(%$metadata)) {
10400: if ($metakey=~/^parameter\_(.*)/) {
10401: my $part=$$metacache{':'.$metakey.'.part'};
10402: my $name=$$metacache{':'.$metakey.'.name'};
10403: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10404: $allnames{$name}=$part;
10405: }
10406: }
10407: }
10408: foreach my $name (keys(%allnames)) {
10409: $$metadata{"parameter_0_$name"}=1;
10410: my $key=":parameter_0_$name";
10411: $$metacache{"$key.part"}='0';
10412: $$metacache{"$key.name"}=$name;
10413: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10414: $allnames{$name}.'_'.$name.
10415: '.type'};
10416: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10417: '.display'};
10418: my $expr='[Part: '.$allnames{$name}.']';
10419: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10420: $$metacache{"$key.display"}=$olddis;
10421: }
10422: }
10423:
10424: # ------------------------------------------------------ Devalidate title cache
10425:
10426: sub devalidate_title_cache {
10427: my ($url)=@_;
10428: if (!$env{'request.course.id'}) { return; }
10429: my $symb=&symbread($url);
10430: if (!$symb) { return; }
10431: my $key=$env{'request.course.id'}."\0".$symb;
10432: &devalidate_cache_new('title',$key);
10433: }
10434:
10435: # ------------------------------------------------- Get the title of a course
10436:
10437: sub current_course_title {
10438: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10439: }
10440: # ------------------------------------------------- Get the title of a resource
10441:
10442: sub gettitle {
10443: my $urlsymb=shift;
10444: my $symb=&symbread($urlsymb);
10445: if ($symb) {
10446: my $key=$env{'request.course.id'}."\0".$symb;
10447: my ($result,$cached)=&is_cached_new('title',$key);
10448: if (defined($cached)) {
10449: return $result;
10450: }
10451: my ($map,$resid,$url)=&decode_symb($symb);
10452: my $title='';
10453: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10454: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10455: } else {
10456: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10457: &GDBM_READER(),0640)) {
10458: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10459: $title=$bighash{'title_'.$mapid.'.'.$resid};
10460: untie(%bighash);
10461: }
10462: }
10463: $title=~s/\&colon\;/\:/gs;
10464: if ($title) {
10465: # Remember both $symb and $title for dynamic metadata
10466: $accesshash{$symb.'___crstitle'}=$title;
10467: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10468: # Cache this title and then return it
10469: return &do_cache_new('title',$key,$title,600);
10470: }
10471: $urlsymb=$url;
10472: }
10473: my $title=&metadata($urlsymb,'title');
10474: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10475: return $title;
10476: }
10477:
10478: sub get_slot {
10479: my ($which,$cnum,$cdom)=@_;
10480: if (!$cnum || !$cdom) {
10481: (undef,my $courseid)=&whichuser();
10482: $cdom=$env{'course.'.$courseid.'.domain'};
10483: $cnum=$env{'course.'.$courseid.'.num'};
10484: }
10485: my $key=join("\0",'slots',$cdom,$cnum,$which);
10486: my %slotinfo;
10487: if (exists($remembered{$key})) {
10488: $slotinfo{$which} = $remembered{$key};
10489: } else {
10490: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10491: &Apache::lonhomework::showhash(%slotinfo);
10492: my ($tmp)=keys(%slotinfo);
10493: if ($tmp=~/^error:/) { return (); }
10494: $remembered{$key} = $slotinfo{$which};
10495: }
10496: if (ref($slotinfo{$which}) eq 'HASH') {
10497: return %{$slotinfo{$which}};
10498: }
10499: return $slotinfo{$which};
10500: }
10501:
10502: sub get_reservable_slots {
10503: my ($cnum,$cdom,$uname,$udom) = @_;
10504: my $now = time;
10505: my $reservable_info;
10506: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10507: if (exists($remembered{$key})) {
10508: $reservable_info = $remembered{$key};
10509: } else {
10510: my %resv;
10511: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10512: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10513: $reservable_info = \%resv;
10514: $remembered{$key} = $reservable_info;
10515: }
10516: return $reservable_info;
10517: }
10518:
10519: sub get_course_slots {
10520: my ($cnum,$cdom) = @_;
10521: my $hashid=$cnum.':'.$cdom;
10522: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10523: if (defined($cached)) {
10524: if (ref($result) eq 'HASH') {
10525: return %{$result};
10526: }
10527: } else {
10528: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10529: my ($tmp) = keys(%slots);
10530: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10531: &do_cache_new('allslots',$hashid,\%slots,600);
10532: return %slots;
10533: }
10534: }
10535: return;
10536: }
10537:
10538: sub devalidate_slots_cache {
10539: my ($cnum,$cdom)=@_;
10540: my $hashid=$cnum.':'.$cdom;
10541: &devalidate_cache_new('allslots',$hashid);
10542: }
10543:
10544: sub get_coursechange {
10545: my ($cdom,$cnum) = @_;
10546: if ($cdom eq '' || $cnum eq '') {
10547: return unless ($env{'request.course.id'});
10548: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10549: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10550: }
10551: my $hashid=$cdom.'_'.$cnum;
10552: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10553: if ((defined($cached)) && ($change ne '')) {
10554: return $change;
10555: } else {
10556: my %crshash;
10557: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10558: if ($crshash{'internal.contentchange'} eq '') {
10559: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10560: if ($change eq '') {
10561: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10562: $change = $crshash{'internal.created'};
10563: }
10564: } else {
10565: $change = $crshash{'internal.contentchange'};
10566: }
10567: my $cachetime = 600;
10568: &do_cache_new('crschange',$hashid,$change,$cachetime);
10569: }
10570: return $change;
10571: }
10572:
10573: sub devalidate_coursechange_cache {
10574: my ($cnum,$cdom)=@_;
10575: my $hashid=$cnum.':'.$cdom;
10576: &devalidate_cache_new('crschange',$hashid);
10577: }
10578:
10579: # ------------------------------------------------- Update symbolic store links
10580:
10581: sub symblist {
10582: my ($mapname,%newhash)=@_;
10583: $mapname=&deversion(&declutter($mapname));
10584: my %hash;
10585: if (($env{'request.course.fn'}) && (%newhash)) {
10586: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10587: &GDBM_WRCREAT(),0640)) {
10588: foreach my $url (keys(%newhash)) {
10589: next if ($url eq 'last_known'
10590: && $env{'form.no_update_last_known'});
10591: $hash{declutter($url)}=&encode_symb($mapname,
10592: $newhash{$url}->[1],
10593: $newhash{$url}->[0]);
10594: }
10595: if (untie(%hash)) {
10596: return 'ok';
10597: }
10598: }
10599: }
10600: return 'error';
10601: }
10602:
10603: # --------------------------------------------------------------- Verify a symb
10604:
10605: sub symbverify {
10606: my ($symb,$thisurl,$encstate)=@_;
10607: my $thisfn=$thisurl;
10608: $thisfn=&declutter($thisfn);
10609: # direct jump to resource in page or to a sequence - will construct own symbs
10610: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10611: # check URL part
10612: my ($map,$resid,$url)=&decode_symb($symb);
10613:
10614: unless ($url eq $thisfn) { return 0; }
10615:
10616: $symb=&symbclean($symb);
10617: $thisurl=&deversion($thisurl);
10618: $thisfn=&deversion($thisfn);
10619:
10620: my %bighash;
10621: my $okay=0;
10622:
10623: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10624: &GDBM_READER(),0640)) {
10625: my $noclutter;
10626: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10627: $thisurl =~ s/\?.+$//;
10628: if ($map =~ m{^uploaded/.+\.page$}) {
10629: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
10630: $thisurl =~ s{^\Qhttp://https://\E}{https://};
10631: $noclutter = 1;
10632: }
10633: }
10634: my $ids;
10635: if ($noclutter) {
10636: $ids=$bighash{'ids_'.$thisurl};
10637: } else {
10638: $ids=$bighash{'ids_'.&clutter($thisurl)};
10639: }
10640: unless ($ids) {
10641: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10642: $ids=$bighash{$idkey};
10643: }
10644: if ($ids) {
10645: # ------------------------------------------------------------------- Has ID(s)
10646: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10647: $symb =~ s/\?.+$//;
10648: }
10649: foreach my $id (split(/\,/,$ids)) {
10650: my ($mapid,$resid)=split(/\./,$id);
10651: if (
10652: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10653: eq $symb) {
10654: if (ref($encstate)) {
10655: $$encstate = $bighash{'encrypted_'.$id};
10656: }
10657: if (($env{'request.role.adv'}) ||
10658: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10659: ($thisurl eq '/adm/navmaps')) {
10660: $okay=1;
10661: last;
10662: }
10663: }
10664: }
10665: }
10666: untie(%bighash);
10667: }
10668: return $okay;
10669: }
10670:
10671: # --------------------------------------------------------------- Clean-up symb
10672:
10673: sub symbclean {
10674: my $symb=shift;
10675: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10676: # remove version from map
10677: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10678:
10679: # remove version from URL
10680: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10681:
10682: # remove wrapper
10683:
10684: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10685: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10686: return $symb;
10687: }
10688:
10689: # ---------------------------------------------- Split symb to find map and url
10690:
10691: sub encode_symb {
10692: my ($map,$resid,$url)=@_;
10693: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10694: }
10695:
10696: sub decode_symb {
10697: my $symb=shift;
10698: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10699: my ($map,$resid,$url)=split(/___/,$symb);
10700: return (&fixversion($map),$resid,&fixversion($url));
10701: }
10702:
10703: sub fixversion {
10704: my $fn=shift;
10705: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10706: my %bighash;
10707: my $uri=&clutter($fn);
10708: my $key=$env{'request.course.id'}.'_'.$uri;
10709: # is this cached?
10710: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10711: if (defined($cached)) { return $result; }
10712: # unfortunately not cached, or expired
10713: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10714: &GDBM_READER(),0640)) {
10715: if ($bighash{'version_'.$uri}) {
10716: my $version=$bighash{'version_'.$uri};
10717: unless (($version eq 'mostrecent') ||
10718: ($version==&getversion($uri))) {
10719: $uri=~s/\.(\w+)$/\.$version\.$1/;
10720: }
10721: }
10722: untie %bighash;
10723: }
10724: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10725: }
10726:
10727: sub deversion {
10728: my $url=shift;
10729: $url=~s/\.\d+\.(\w+)$/\.$1/;
10730: return $url;
10731: }
10732:
10733: # ------------------------------------------------------ Return symb list entry
10734:
10735: sub symbread {
10736: my ($thisfn,$donotrecurse)=@_;
10737: my $cache_str;
10738: if ($thisfn ne '') {
10739: $cache_str='request.symbread.cached.'.$thisfn;
10740: if ($env{$cache_str} ne '') {
10741: return $env{$cache_str};
10742: }
10743: } else {
10744: # no filename provided? try from environment
10745: if ($env{'request.symb'}) {
10746: return $env{$cache_str}=&symbclean($env{'request.symb'});
10747: }
10748: $thisfn=$env{'request.filename'};
10749: }
10750: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10751: # is that filename actually a symb? Verify, clean, and return
10752: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10753: if (&symbverify($thisfn,$1)) {
10754: return $env{$cache_str}=&symbclean($thisfn);
10755: }
10756: }
10757: $thisfn=declutter($thisfn);
10758: my %hash;
10759: my %bighash;
10760: my $syval='';
10761: if (($env{'request.course.fn'}) && ($thisfn)) {
10762: my $targetfn = $thisfn;
10763: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10764: $targetfn = 'adm/wrapper/'.$thisfn;
10765: }
10766: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10767: $targetfn=$1;
10768: }
10769: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10770: &GDBM_READER(),0640)) {
10771: $syval=$hash{$targetfn};
10772: untie(%hash);
10773: }
10774: # ---------------------------------------------------------- There was an entry
10775: if ($syval) {
10776: #unless ($syval=~/\_\d+$/) {
10777: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10778: #&appenv({'request.ambiguous' => $thisfn});
10779: #return $env{$cache_str}='';
10780: #}
10781: #$syval.=$1;
10782: #}
10783: } else {
10784: # ------------------------------------------------------- Was not in symb table
10785: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10786: &GDBM_READER(),0640)) {
10787: # ---------------------------------------------- Get ID(s) for current resource
10788: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10789: unless ($ids) {
10790: $ids=$bighash{'ids_/'.$thisfn};
10791: }
10792: unless ($ids) {
10793: # alias?
10794: $ids=$bighash{'mapalias_'.$thisfn};
10795: }
10796: if ($ids) {
10797: # ------------------------------------------------------------------- Has ID(s)
10798: my @possibilities=split(/\,/,$ids);
10799: if ($#possibilities==0) {
10800: # ----------------------------------------------- There is only one possibility
10801: my ($mapid,$resid)=split(/\./,$ids);
10802: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10803: $resid,$thisfn);
10804: } elsif (!$donotrecurse) {
10805: # ------------------------------------------ There is more than one possibility
10806: my $realpossible=0;
10807: foreach my $id (@possibilities) {
10808: my $file=$bighash{'src_'.$id};
10809: if (&allowed('bre',$file)) {
10810: my ($mapid,$resid)=split(/\./,$id);
10811: if ($bighash{'map_type_'.$mapid} ne 'page') {
10812: $realpossible++;
10813: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10814: $resid,$thisfn);
10815: }
10816: }
10817: }
10818: if ($realpossible!=1) { $syval=''; }
10819: } else {
10820: $syval='';
10821: }
10822: }
10823: untie(%bighash)
10824: }
10825: }
10826: if ($syval) {
10827: return $env{$cache_str}=$syval;
10828: }
10829: }
10830: &appenv({'request.ambiguous' => $thisfn});
10831: return $env{$cache_str}='';
10832: }
10833:
10834: # ---------------------------------------------------------- Return random seed
10835:
10836: sub numval {
10837: my $txt=shift;
10838: $txt=~tr/A-J/0-9/;
10839: $txt=~tr/a-j/0-9/;
10840: $txt=~tr/K-T/0-9/;
10841: $txt=~tr/k-t/0-9/;
10842: $txt=~tr/U-Z/0-5/;
10843: $txt=~tr/u-z/0-5/;
10844: $txt=~s/\D//g;
10845: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10846: return int($txt);
10847: }
10848:
10849: sub numval2 {
10850: my $txt=shift;
10851: $txt=~tr/A-J/0-9/;
10852: $txt=~tr/a-j/0-9/;
10853: $txt=~tr/K-T/0-9/;
10854: $txt=~tr/k-t/0-9/;
10855: $txt=~tr/U-Z/0-5/;
10856: $txt=~tr/u-z/0-5/;
10857: $txt=~s/\D//g;
10858: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10859: my $total;
10860: foreach my $val (@txts) { $total+=$val; }
10861: if ($_64bit) { if ($total > 2**32) { return -1; } }
10862: return int($total);
10863: }
10864:
10865: sub numval3 {
10866: use integer;
10867: my $txt=shift;
10868: $txt=~tr/A-J/0-9/;
10869: $txt=~tr/a-j/0-9/;
10870: $txt=~tr/K-T/0-9/;
10871: $txt=~tr/k-t/0-9/;
10872: $txt=~tr/U-Z/0-5/;
10873: $txt=~tr/u-z/0-5/;
10874: $txt=~s/\D//g;
10875: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10876: my $total;
10877: foreach my $val (@txts) { $total+=$val; }
10878: if ($_64bit) { $total=(($total<<32)>>32); }
10879: return $total;
10880: }
10881:
10882: sub digest {
10883: my ($data)=@_;
10884: my $digest=&Digest::MD5::md5($data);
10885: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10886: my ($e,$f);
10887: {
10888: use integer;
10889: $e=($a+$b);
10890: $f=($c+$d);
10891: if ($_64bit) {
10892: $e=(($e<<32)>>32);
10893: $f=(($f<<32)>>32);
10894: }
10895: }
10896: if (wantarray) {
10897: return ($e,$f);
10898: } else {
10899: my $g;
10900: {
10901: use integer;
10902: $g=($e+$f);
10903: if ($_64bit) {
10904: $g=(($g<<32)>>32);
10905: }
10906: }
10907: return $g;
10908: }
10909: }
10910:
10911: sub latest_rnd_algorithm_id {
10912: return '64bit5';
10913: }
10914:
10915: sub get_rand_alg {
10916: my ($courseid)=@_;
10917: if (!$courseid) { $courseid=(&whichuser())[1]; }
10918: if ($courseid) {
10919: return $env{"course.$courseid.rndseed"};
10920: }
10921: return &latest_rnd_algorithm_id();
10922: }
10923:
10924: sub validCODE {
10925: my ($CODE)=@_;
10926: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10927: return 0;
10928: }
10929:
10930: sub getCODE {
10931: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10932: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10933: defined($Apache::lonhomework::parsing_a_task) ) &&
10934: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10935: return $Apache::lonhomework::history{'resource.CODE'};
10936: }
10937: return undef;
10938: }
10939: #
10940: # Determines the random seed for a specific context:
10941: #
10942: # parameters:
10943: # symb - in course context the symb for the seed.
10944: # course_id - The course id of the form domain_coursenum.
10945: # domain - Domain for the user.
10946: # course - Course for the user.
10947: # cenv - environment of the course.
10948: #
10949: # NOTE:
10950: # All parameters are picked out of the environment if missing
10951: # or not defined.
10952: # If a symb cannot be determined the current time is used instead.
10953: #
10954: # For a given well defined symb, courside, domain, username,
10955: # and course environment, the seed is reproducible.
10956: #
10957: sub rndseed {
10958: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10959: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10960: if (!defined($symb)) {
10961: unless ($symb=$wsymb) { return time; }
10962: }
10963: if (!defined $courseid) {
10964: $courseid=$wcourseid;
10965: }
10966: if (!defined $domain) { $domain=$wdomain; }
10967: if (!defined $username) { $username=$wusername }
10968:
10969: my $which;
10970: if (defined($cenv->{'rndseed'})) {
10971: $which = $cenv->{'rndseed'};
10972: } else {
10973: $which =&get_rand_alg($courseid);
10974: }
10975: if (defined(&getCODE())) {
10976:
10977: if ($which eq '64bit5') {
10978: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10979: } elsif ($which eq '64bit4') {
10980: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10981: } else {
10982: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10983: }
10984: } elsif ($which eq '64bit5') {
10985: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10986: } elsif ($which eq '64bit4') {
10987: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10988: } elsif ($which eq '64bit3') {
10989: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10990: } elsif ($which eq '64bit2') {
10991: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10992: } elsif ($which eq '64bit') {
10993: return &rndseed_64bit($symb,$courseid,$domain,$username);
10994: }
10995: return &rndseed_32bit($symb,$courseid,$domain,$username);
10996: }
10997:
10998: sub rndseed_32bit {
10999: my ($symb,$courseid,$domain,$username)=@_;
11000: {
11001: use integer;
11002: my $symbchck=unpack("%32C*",$symb) << 27;
11003: my $symbseed=numval($symb) << 22;
11004: my $namechck=unpack("%32C*",$username) << 17;
11005: my $nameseed=numval($username) << 12;
11006: my $domainseed=unpack("%32C*",$domain) << 7;
11007: my $courseseed=unpack("%32C*",$courseid);
11008: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11009: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11010: #&logthis("rndseed :$num:$symb");
11011: if ($_64bit) { $num=(($num<<32)>>32); }
11012: return $num;
11013: }
11014: }
11015:
11016: sub rndseed_64bit {
11017: my ($symb,$courseid,$domain,$username)=@_;
11018: {
11019: use integer;
11020: my $symbchck=unpack("%32S*",$symb) << 21;
11021: my $symbseed=numval($symb) << 10;
11022: my $namechck=unpack("%32S*",$username);
11023:
11024: my $nameseed=numval($username) << 21;
11025: my $domainseed=unpack("%32S*",$domain) << 10;
11026: my $courseseed=unpack("%32S*",$courseid);
11027:
11028: my $num1=$symbchck+$symbseed+$namechck;
11029: my $num2=$nameseed+$domainseed+$courseseed;
11030: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11031: #&logthis("rndseed :$num:$symb");
11032: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11033: return "$num1,$num2";
11034: }
11035: }
11036:
11037: sub rndseed_64bit2 {
11038: my ($symb,$courseid,$domain,$username)=@_;
11039: {
11040: use integer;
11041: # strings need to be an even # of cahracters long, it it is odd the
11042: # last characters gets thrown away
11043: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11044: my $symbseed=numval($symb) << 10;
11045: my $namechck=unpack("%32S*",$username.' ');
11046:
11047: my $nameseed=numval($username) << 21;
11048: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11049: my $courseseed=unpack("%32S*",$courseid.' ');
11050:
11051: my $num1=$symbchck+$symbseed+$namechck;
11052: my $num2=$nameseed+$domainseed+$courseseed;
11053: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11054: #&logthis("rndseed :$num:$symb");
11055: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11056: return "$num1,$num2";
11057: }
11058: }
11059:
11060: sub rndseed_64bit3 {
11061: my ($symb,$courseid,$domain,$username)=@_;
11062: {
11063: use integer;
11064: # strings need to be an even # of cahracters long, it it is odd the
11065: # last characters gets thrown away
11066: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11067: my $symbseed=numval2($symb) << 10;
11068: my $namechck=unpack("%32S*",$username.' ');
11069:
11070: my $nameseed=numval2($username) << 21;
11071: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11072: my $courseseed=unpack("%32S*",$courseid.' ');
11073:
11074: my $num1=$symbchck+$symbseed+$namechck;
11075: my $num2=$nameseed+$domainseed+$courseseed;
11076: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11077: #&logthis("rndseed :$num1:$num2:$_64bit");
11078: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11079:
11080: return "$num1:$num2";
11081: }
11082: }
11083:
11084: sub rndseed_64bit4 {
11085: my ($symb,$courseid,$domain,$username)=@_;
11086: {
11087: use integer;
11088: # strings need to be an even # of cahracters long, it it is odd the
11089: # last characters gets thrown away
11090: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11091: my $symbseed=numval3($symb) << 10;
11092: my $namechck=unpack("%32S*",$username.' ');
11093:
11094: my $nameseed=numval3($username) << 21;
11095: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11096: my $courseseed=unpack("%32S*",$courseid.' ');
11097:
11098: my $num1=$symbchck+$symbseed+$namechck;
11099: my $num2=$nameseed+$domainseed+$courseseed;
11100: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11101: #&logthis("rndseed :$num1:$num2:$_64bit");
11102: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11103:
11104: return "$num1:$num2";
11105: }
11106: }
11107:
11108: sub rndseed_64bit5 {
11109: my ($symb,$courseid,$domain,$username)=@_;
11110: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11111: return "$num1:$num2";
11112: }
11113:
11114: sub rndseed_CODE_64bit {
11115: my ($symb,$courseid,$domain,$username)=@_;
11116: {
11117: use integer;
11118: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11119: my $symbseed=numval2($symb);
11120: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11121: my $CODEseed=numval(&getCODE());
11122: my $courseseed=unpack("%32S*",$courseid.' ');
11123: my $num1=$symbseed+$CODEchck;
11124: my $num2=$CODEseed+$courseseed+$symbchck;
11125: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11126: #&logthis("rndseed :$num1:$num2:$symb");
11127: if ($_64bit) { $num1=(($num1<<32)>>32); }
11128: if ($_64bit) { $num2=(($num2<<32)>>32); }
11129: return "$num1:$num2";
11130: }
11131: }
11132:
11133: sub rndseed_CODE_64bit4 {
11134: my ($symb,$courseid,$domain,$username)=@_;
11135: {
11136: use integer;
11137: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11138: my $symbseed=numval3($symb);
11139: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11140: my $CODEseed=numval3(&getCODE());
11141: my $courseseed=unpack("%32S*",$courseid.' ');
11142: my $num1=$symbseed+$CODEchck;
11143: my $num2=$CODEseed+$courseseed+$symbchck;
11144: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11145: #&logthis("rndseed :$num1:$num2:$symb");
11146: if ($_64bit) { $num1=(($num1<<32)>>32); }
11147: if ($_64bit) { $num2=(($num2<<32)>>32); }
11148: return "$num1:$num2";
11149: }
11150: }
11151:
11152: sub rndseed_CODE_64bit5 {
11153: my ($symb,$courseid,$domain,$username)=@_;
11154: my $code = &getCODE();
11155: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11156: return "$num1:$num2";
11157: }
11158:
11159: sub setup_random_from_rndseed {
11160: my ($rndseed)=@_;
11161: if ($rndseed =~/([,:])/) {
11162: my ($num1,$num2)=split(/[,:]/,$rndseed);
11163: &Math::Random::random_set_seed(abs($num1),abs($num2));
11164: } else {
11165: &Math::Random::random_set_seed_from_phrase($rndseed);
11166: }
11167: }
11168:
11169: sub latest_receipt_algorithm_id {
11170: return 'receipt3';
11171: }
11172:
11173: sub recunique {
11174: my $fucourseid=shift;
11175: my $unique;
11176: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11177: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11178: $unique=$env{"course.$fucourseid.internal.encseed"};
11179: } else {
11180: $unique=$perlvar{'lonReceipt'};
11181: }
11182: return unpack("%32C*",$unique);
11183: }
11184:
11185: sub recprefix {
11186: my $fucourseid=shift;
11187: my $prefix;
11188: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11189: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11190: $prefix=$env{"course.$fucourseid.internal.encpref"};
11191: } else {
11192: $prefix=$perlvar{'lonHostID'};
11193: }
11194: return unpack("%32C*",$prefix);
11195: }
11196:
11197: sub ireceipt {
11198: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11199:
11200: my $return =&recprefix($fucourseid).'-';
11201:
11202: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11203: $env{'request.state'} eq 'construct') {
11204: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11205: return $return;
11206: }
11207:
11208: my $cuname=unpack("%32C*",$funame);
11209: my $cudom=unpack("%32C*",$fudom);
11210: my $cucourseid=unpack("%32C*",$fucourseid);
11211: my $cusymb=unpack("%32C*",$fusymb);
11212: my $cunique=&recunique($fucourseid);
11213: my $cpart=unpack("%32S*",$part);
11214: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11215:
11216: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11217:
11218: $return.= ($cunique%$cuname+
11219: $cunique%$cudom+
11220: $cusymb%$cuname+
11221: $cusymb%$cudom+
11222: $cucourseid%$cuname+
11223: $cucourseid%$cudom+
11224: $cpart%$cuname+
11225: $cpart%$cudom);
11226: } else {
11227: $return.= ($cunique%$cuname+
11228: $cunique%$cudom+
11229: $cusymb%$cuname+
11230: $cusymb%$cudom+
11231: $cucourseid%$cuname+
11232: $cucourseid%$cudom);
11233: }
11234: return $return;
11235: }
11236:
11237: sub receipt {
11238: my ($part)=@_;
11239: my ($symb,$courseid,$domain,$name) = &whichuser();
11240: return &ireceipt($name,$domain,$courseid,$symb,$part);
11241: }
11242:
11243: sub whichuser {
11244: my ($passedsymb)=@_;
11245: my ($symb,$courseid,$domain,$name,$publicuser);
11246: if (defined($env{'form.grade_symb'})) {
11247: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11248: my $allowed=&allowed('vgr',$tmp_courseid);
11249: if (!$allowed &&
11250: exists($env{'request.course.sec'}) &&
11251: $env{'request.course.sec'} !~ /^\s*$/) {
11252: $allowed=&allowed('vgr',$tmp_courseid.
11253: '/'.$env{'request.course.sec'});
11254: }
11255: if ($allowed) {
11256: ($symb)=&get_env_multiple('form.grade_symb');
11257: $courseid=$tmp_courseid;
11258: ($domain)=&get_env_multiple('form.grade_domain');
11259: ($name)=&get_env_multiple('form.grade_username');
11260: return ($symb,$courseid,$domain,$name,$publicuser);
11261: }
11262: }
11263: if (!$passedsymb) {
11264: $symb=&symbread();
11265: } else {
11266: $symb=$passedsymb;
11267: }
11268: $courseid=$env{'request.course.id'};
11269: $domain=$env{'user.domain'};
11270: $name=$env{'user.name'};
11271: if ($name eq 'public' && $domain eq 'public') {
11272: if (!defined($env{'form.username'})) {
11273: $env{'form.username'}.=time.rand(10000000);
11274: }
11275: $name.=$env{'form.username'};
11276: }
11277: return ($symb,$courseid,$domain,$name,$publicuser);
11278:
11279: }
11280:
11281: # ------------------------------------------------------------ Serves up a file
11282: # returns either the contents of the file or
11283: # -1 if the file doesn't exist
11284: #
11285: # if the target is a file that was uploaded via DOCS,
11286: # a check will be made to see if a current copy exists on the local server,
11287: # if it does this will be served, otherwise a copy will be retrieved from
11288: # the home server for the course and stored in /home/httpd/html/userfiles on
11289: # the local server.
11290:
11291: sub getfile {
11292: my ($file) = @_;
11293: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11294: &repcopy($file);
11295: return &readfile($file);
11296: }
11297:
11298: sub repcopy_userfile {
11299: my ($file)=@_;
11300: my $londocroot = $perlvar{'lonDocRoot'};
11301: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11302: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11303: my ($cdom,$cnum,$filename) =
11304: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11305: my $uri="/uploaded/$cdom/$cnum/$filename";
11306: if (-e "$file") {
11307: # we already have a local copy, check it out
11308: my @fileinfo = stat($file);
11309: my $rtncode;
11310: my $info;
11311: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11312: if ($lwpresp ne 'ok') {
11313: # there is no such file anymore, even though we had a local copy
11314: if ($rtncode eq '404') {
11315: unlink($file);
11316: }
11317: return -1;
11318: }
11319: if ($info < $fileinfo[9]) {
11320: # nice, the file we have is up-to-date, just say okay
11321: return 'ok';
11322: } else {
11323: # the file is outdated, get rid of it
11324: unlink($file);
11325: }
11326: }
11327: # one way or the other, at this point, we don't have the file
11328: # construct the correct path for the file
11329: my @parts = ($cdom,$cnum);
11330: if ($filename =~ m|^(.+)/[^/]+$|) {
11331: push @parts, split(/\//,$1);
11332: }
11333: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11334: foreach my $part (@parts) {
11335: $path .= '/'.$part;
11336: if (!-e $path) {
11337: mkdir($path,0770);
11338: }
11339: }
11340: # now the path exists for sure
11341: # get a user agent
11342: my $ua=new LWP::UserAgent;
11343: my $transferfile=$file.'.in.transfer';
11344: # FIXME: this should flock
11345: if (-e $transferfile) { return 'ok'; }
11346: my $request;
11347: $uri=~s/^\///;
11348: my $homeserver = &homeserver($cnum,$cdom);
11349: my $protocol = $protocol{$homeserver};
11350: $protocol = 'http' if ($protocol ne 'https');
11351: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11352: my $response=$ua->request($request,$transferfile);
11353: # did it work?
11354: if ($response->is_error()) {
11355: unlink($transferfile);
11356: &logthis("Userfile repcopy failed for $uri");
11357: return -1;
11358: }
11359: # worked, rename the transfer file
11360: rename($transferfile,$file);
11361: return 'ok';
11362: }
11363:
11364: sub tokenwrapper {
11365: my $uri=shift;
11366: $uri=~s|^https?\://([^/]+)||;
11367: $uri=~s|^/||;
11368: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11369: my $token=$1;
11370: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11371: if ($udom && $uname && $file) {
11372: $file=~s|(\?\.*)*$||;
11373: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11374: my $homeserver = &homeserver($uname,$udom);
11375: my $protocol = $protocol{$homeserver};
11376: $protocol = 'http' if ($protocol ne 'https');
11377: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11378: (($uri=~/\?/)?'&':'?').'token='.$token.
11379: '&tokenissued='.$perlvar{'lonHostID'};
11380: } else {
11381: return '/adm/notfound.html';
11382: }
11383: }
11384:
11385: # call with reqtype HEAD: get last modification time
11386: # call with reqtype GET: get the file contents
11387: # Do not call this with reqtype GET for large files! It loads everything into memory
11388: #
11389: sub getuploaded {
11390: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11391: $uri=~s/^\///;
11392: my $homeserver = &homeserver($cnum,$cdom);
11393: my $protocol = $protocol{$homeserver};
11394: $protocol = 'http' if ($protocol ne 'https');
11395: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11396: my $ua=new LWP::UserAgent;
11397: my $request=new HTTP::Request($reqtype,$uri);
11398: my $response=$ua->request($request);
11399: $$rtncode = $response->code;
11400: if (! $response->is_success()) {
11401: return 'failed';
11402: }
11403: if ($reqtype eq 'HEAD') {
11404: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11405: } elsif ($reqtype eq 'GET') {
11406: $$info = $response->content;
11407: }
11408: return 'ok';
11409: }
11410:
11411: sub readfile {
11412: my $file = shift;
11413: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11414: my $fh;
11415: open($fh,"<$file");
11416: my $a='';
11417: while (my $line = <$fh>) { $a .= $line; }
11418: return $a;
11419: }
11420:
11421: sub filelocation {
11422: my ($dir,$file) = @_;
11423: my $location;
11424: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11425:
11426: if ($file =~ m-^/adm/-) {
11427: $file=~s-^/adm/wrapper/-/-;
11428: $file=~s-^/adm/coursedocs/showdoc/-/-;
11429: }
11430:
11431: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11432: $location = $file;
11433: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11434: my ($udom,$uname,$filename)=
11435: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11436: my $home=&homeserver($uname,$udom);
11437: my $is_me=0;
11438: my @ids=¤t_machine_ids();
11439: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11440: if ($is_me) {
11441: $location=propath($udom,$uname).'/userfiles/'.$filename;
11442: } else {
11443: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11444: $udom.'/'.$uname.'/'.$filename;
11445: }
11446: } elsif ($file =~ m-^/adm/-) {
11447: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11448: } else {
11449: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11450: $file=~s:^/(res|priv)/:/:;
11451: my $space=$1;
11452: if ( !( $file =~ m:^/:) ) {
11453: $location = $dir. '/'.$file;
11454: } else {
11455: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11456: }
11457: }
11458: $location=~s://+:/:g; # remove duplicate /
11459: while ($location=~m{/\.\./}) {
11460: if ($location =~ m{/[^/]+/\.\./}) {
11461: $location=~ s{/[^/]+/\.\./}{/}g;
11462: } else {
11463: $location=~ s{/\.\./}{/}g;
11464: }
11465: } #remove dir/..
11466: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11467: return $location;
11468: }
11469:
11470: sub hreflocation {
11471: my ($dir,$file)=@_;
11472: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11473: $file=filelocation($dir,$file);
11474: } elsif ($file=~m-^/adm/-) {
11475: $file=~s-^/adm/wrapper/-/-;
11476: $file=~s-^/adm/coursedocs/showdoc/-/-;
11477: }
11478: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11479: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11480: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11481: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11482: {/uploaded/$1/$2/}x;
11483: }
11484: if ($file=~ m{^/userfiles/}) {
11485: $file =~ s{^/userfiles/}{/uploaded/};
11486: }
11487: return $file;
11488: }
11489:
11490:
11491:
11492:
11493:
11494: sub current_machine_domains {
11495: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11496: }
11497:
11498: sub machine_domains {
11499: my ($hostname) = @_;
11500: my @domains;
11501: my %hostname = &all_hostnames();
11502: while( my($id, $name) = each(%hostname)) {
11503: # &logthis("-$id-$name-$hostname-");
11504: if ($hostname eq $name) {
11505: push(@domains,&host_domain($id));
11506: }
11507: }
11508: return @domains;
11509: }
11510:
11511: sub current_machine_ids {
11512: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11513: }
11514:
11515: sub machine_ids {
11516: my ($hostname) = @_;
11517: $hostname ||= &hostname($perlvar{'lonHostID'});
11518: my @ids;
11519: my %name_to_host = &all_names();
11520: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11521: return @{ $name_to_host{$hostname} };
11522: }
11523: return;
11524: }
11525:
11526: sub additional_machine_domains {
11527: my @domains;
11528: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11529: while( my $line = <$fh>) {
11530: $line =~ s/\s//g;
11531: push(@domains,$line);
11532: }
11533: return @domains;
11534: }
11535:
11536: sub default_login_domain {
11537: my $domain = $perlvar{'lonDefDomain'};
11538: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11539: foreach my $posdom (¤t_machine_domains(),
11540: &additional_machine_domains()) {
11541: if (lc($posdom) eq lc($testdomain)) {
11542: $domain=$posdom;
11543: last;
11544: }
11545: }
11546: return $domain;
11547: }
11548:
11549: # ------------------------------------------------------------- Declutters URLs
11550:
11551: sub declutter {
11552: my $thisfn=shift;
11553: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11554: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11555: $thisfn=~s/^\///;
11556: $thisfn=~s|^adm/wrapper/||;
11557: $thisfn=~s|^adm/coursedocs/showdoc/||;
11558: $thisfn=~s/^res\///;
11559: $thisfn=~s/^priv\///;
11560: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11561: $thisfn=~s/\?.+$//;
11562: }
11563: return $thisfn;
11564: }
11565:
11566: # ------------------------------------------------------------- Clutter up URLs
11567:
11568: sub clutter {
11569: my $thisfn='/'.&declutter(shift);
11570: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11571: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11572: $thisfn='/res'.$thisfn;
11573: }
11574: if ($thisfn !~m|^/adm|) {
11575: if ($thisfn =~ m|^/ext/|) {
11576: $thisfn='/adm/wrapper'.$thisfn;
11577: } else {
11578: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11579: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11580: if ($embstyle eq 'ssi'
11581: || ($embstyle eq 'hdn')
11582: || ($embstyle eq 'rat')
11583: || ($embstyle eq 'prv')
11584: || ($embstyle eq 'ign')) {
11585: #do nothing with these
11586: } elsif (($embstyle eq 'img')
11587: || ($embstyle eq 'emb')
11588: || ($embstyle eq 'wrp')) {
11589: $thisfn='/adm/wrapper'.$thisfn;
11590: } elsif ($embstyle eq 'unk'
11591: && $thisfn!~/\.(sequence|page)$/) {
11592: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11593: } else {
11594: # &logthis("Got a blank emb style");
11595: }
11596: }
11597: }
11598: return $thisfn;
11599: }
11600:
11601: sub clutter_with_no_wrapper {
11602: my $uri = &clutter(shift);
11603: if ($uri =~ m-^/adm/-) {
11604: $uri =~ s-^/adm/wrapper/-/-;
11605: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11606: }
11607: return $uri;
11608: }
11609:
11610: sub freeze_escape {
11611: my ($value)=@_;
11612: if (ref($value)) {
11613: $value=&nfreeze($value);
11614: return '__FROZEN__'.&escape($value);
11615: }
11616: return &escape($value);
11617: }
11618:
11619:
11620: sub thaw_unescape {
11621: my ($value)=@_;
11622: if ($value =~ /^__FROZEN__/) {
11623: substr($value,0,10,undef);
11624: $value=&unescape($value);
11625: return &thaw($value);
11626: }
11627: return &unescape($value);
11628: }
11629:
11630: sub correct_line_ends {
11631: my ($result)=@_;
11632: $$result =~s/\r\n/\n/mg;
11633: $$result =~s/\r/\n/mg;
11634: }
11635: # ================================================================ Main Program
11636:
11637: sub goodbye {
11638: &logthis("Starting Shut down");
11639: #not converted to using infrastruture and probably shouldn't be
11640: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11641: #converted
11642: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11643: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11644: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11645: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11646: #1.1 only
11647: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11648: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11649: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11650: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11651: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11652: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11653: &logthis(sprintf("%-20s is %s",'hits',$hits));
11654: &flushcourselogs();
11655: &logthis("Shutting down");
11656: }
11657:
11658: sub get_dns {
11659: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
11660: if (!$ignore_cache) {
11661: my ($content,$cached)=
11662: &Apache::lonnet::is_cached_new('dns',$url);
11663: if ($cached) {
11664: &$func($content,$hashref);
11665: return;
11666: }
11667: }
11668:
11669: my %alldns;
11670: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11671: foreach my $dns (<$config>) {
11672: next if ($dns !~ /^\^(\S*)/x);
11673: my $line = $1;
11674: my ($host,$protocol) = split(/:/,$line);
11675: if ($protocol ne 'https') {
11676: $protocol = 'http';
11677: }
11678: $alldns{$host} = $protocol;
11679: }
11680: while (%alldns) {
11681: my ($dns) = keys(%alldns);
11682: my $ua=new LWP::UserAgent;
11683: $ua->timeout(30);
11684: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11685: my $response=$ua->request($request);
11686: delete($alldns{$dns});
11687: next if ($response->is_error());
11688: my @content = split("\n",$response->content);
11689: unless ($nocache) {
11690: &do_cache_new('dns',$url,\@content,30*24*60*60);
11691: }
11692: &$func(\@content,$hashref);
11693: return;
11694: }
11695: close($config);
11696: my $which = (split('/',$url))[3];
11697: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11698: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11699: my @content = <$config>;
11700: &$func(\@content,$hashref);
11701: return;
11702: }
11703:
11704: # ------------------------------------------------------Get DNS checksums file
11705: sub parse_dns_checksums_tab {
11706: my ($lines,$hashref) = @_;
11707: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11708: my $loncaparev = &get_server_loncaparev($machine_dom);
11709: my ($release,$timestamp) = split(/\-/,$loncaparev);
11710: my (%chksum,%revnum);
11711: if (ref($lines) eq 'ARRAY') {
11712: chomp(@{$lines});
11713: my $version = shift(@{$lines});
11714: if ($version eq $release) {
11715: foreach my $line (@{$lines}) {
11716: my ($file,$version,$shasum) = split(/,/,$line);
11717: $chksum{$file} = $shasum;
11718: $revnum{$file} = $version;
11719: }
11720: if (ref($hashref) eq 'HASH') {
11721: %{$hashref} = (
11722: sums => \%chksum,
11723: versions => \%revnum,
11724: );
11725: }
11726: }
11727: }
11728: return;
11729: }
11730:
11731: sub fetch_dns_checksums {
11732: my %checksums;
11733: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
11734: my $loncaparev = &get_server_loncaparev($machine_dom);
11735: my ($release,$timestamp) = split(/\-/,$loncaparev);
11736: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
11737: \%checksums);
11738: return \%checksums;
11739: }
11740:
11741: # ------------------------------------------------------------ Read domain file
11742: {
11743: my $loaded;
11744: my %domain;
11745:
11746: sub parse_domain_tab {
11747: my ($lines) = @_;
11748: foreach my $line (@$lines) {
11749: next if ($line =~ /^(\#|\s*$ )/x);
11750:
11751: chomp($line);
11752: my ($name,@elements) = split(/:/,$line,9);
11753: my %this_domain;
11754: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11755: 'lang_def', 'city', 'longi', 'lati',
11756: 'primary') {
11757: $this_domain{$field} = shift(@elements);
11758: }
11759: $domain{$name} = \%this_domain;
11760: }
11761: }
11762:
11763: sub reset_domain_info {
11764: undef($loaded);
11765: undef(%domain);
11766: }
11767:
11768: sub load_domain_tab {
11769: my ($ignore_cache) = @_;
11770: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11771: my $fh;
11772: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11773: my @lines = <$fh>;
11774: &parse_domain_tab(\@lines);
11775: }
11776: close($fh);
11777: $loaded = 1;
11778: }
11779:
11780: sub domain {
11781: &load_domain_tab() if (!$loaded);
11782:
11783: my ($name,$what) = @_;
11784: return if ( !exists($domain{$name}) );
11785:
11786: if (!$what) {
11787: return $domain{$name}{'description'};
11788: }
11789: return $domain{$name}{$what};
11790: }
11791:
11792: sub domain_info {
11793: &load_domain_tab() if (!$loaded);
11794: return %domain;
11795: }
11796:
11797: }
11798:
11799:
11800: # ------------------------------------------------------------- Read hosts file
11801: {
11802: my %hostname;
11803: my %hostdom;
11804: my %libserv;
11805: my $loaded;
11806: my %name_to_host;
11807: my %internetdom;
11808: my %LC_dns_serv;
11809:
11810: sub parse_hosts_tab {
11811: my ($file) = @_;
11812: foreach my $configline (@$file) {
11813: next if ($configline =~ /^(\#|\s*$ )/x);
11814: chomp($configline);
11815: if ($configline =~ /^\^/) {
11816: if ($configline =~ /^\^([\w.\-]+)/) {
11817: $LC_dns_serv{$1} = 1;
11818: }
11819: next;
11820: }
11821: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11822: $name=~s/\s//g;
11823: if ($id && $domain && $role && $name) {
11824: $hostname{$id}=$name;
11825: push(@{$name_to_host{$name}}, $id);
11826: $hostdom{$id}=$domain;
11827: if ($role eq 'library') { $libserv{$id}=$name; }
11828: if (defined($protocol)) {
11829: if ($protocol eq 'https') {
11830: $protocol{$id} = $protocol;
11831: } else {
11832: $protocol{$id} = 'http';
11833: }
11834: } else {
11835: $protocol{$id} = 'http';
11836: }
11837: if (defined($intdom)) {
11838: $internetdom{$id} = $intdom;
11839: }
11840: }
11841: }
11842: }
11843:
11844: sub reset_hosts_info {
11845: &purge_remembered();
11846: &reset_domain_info();
11847: &reset_hosts_ip_info();
11848: undef(%name_to_host);
11849: undef(%hostname);
11850: undef(%hostdom);
11851: undef(%libserv);
11852: undef($loaded);
11853: }
11854:
11855: sub load_hosts_tab {
11856: my ($ignore_cache) = @_;
11857: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11858: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11859: my @config = <$config>;
11860: &parse_hosts_tab(\@config);
11861: close($config);
11862: $loaded=1;
11863: }
11864:
11865: sub hostname {
11866: &load_hosts_tab() if (!$loaded);
11867:
11868: my ($lonid) = @_;
11869: return $hostname{$lonid};
11870: }
11871:
11872: sub all_hostnames {
11873: &load_hosts_tab() if (!$loaded);
11874:
11875: return %hostname;
11876: }
11877:
11878: sub all_names {
11879: &load_hosts_tab() if (!$loaded);
11880:
11881: return %name_to_host;
11882: }
11883:
11884: sub all_host_domain {
11885: &load_hosts_tab() if (!$loaded);
11886: return %hostdom;
11887: }
11888:
11889: sub is_library {
11890: &load_hosts_tab() if (!$loaded);
11891:
11892: return exists($libserv{$_[0]});
11893: }
11894:
11895: sub all_library {
11896: &load_hosts_tab() if (!$loaded);
11897:
11898: return %libserv;
11899: }
11900:
11901: sub unique_library {
11902: #2x reverse removes all hostnames that appear more than once
11903: my %unique = reverse &all_library();
11904: return reverse %unique;
11905: }
11906:
11907: sub get_servers {
11908: &load_hosts_tab() if (!$loaded);
11909:
11910: my ($domain,$type) = @_;
11911: my %possible_hosts = ($type eq 'library') ? %libserv
11912: : %hostname;
11913: my %result;
11914: if (ref($domain) eq 'ARRAY') {
11915: while ( my ($host,$hostname) = each(%possible_hosts)) {
11916: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11917: $result{$host} = $hostname;
11918: }
11919: }
11920: } else {
11921: while ( my ($host,$hostname) = each(%possible_hosts)) {
11922: if ($hostdom{$host} eq $domain) {
11923: $result{$host} = $hostname;
11924: }
11925: }
11926: }
11927: return %result;
11928: }
11929:
11930: sub get_unique_servers {
11931: my %unique = reverse &get_servers(@_);
11932: return reverse %unique;
11933: }
11934:
11935: sub host_domain {
11936: &load_hosts_tab() if (!$loaded);
11937:
11938: my ($lonid) = @_;
11939: return $hostdom{$lonid};
11940: }
11941:
11942: sub all_domains {
11943: &load_hosts_tab() if (!$loaded);
11944:
11945: my %seen;
11946: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11947: return @uniq;
11948: }
11949:
11950: sub internet_dom {
11951: &load_hosts_tab() if (!$loaded);
11952:
11953: my ($lonid) = @_;
11954: return $internetdom{$lonid};
11955: }
11956:
11957: sub is_LC_dns {
11958: &load_hosts_tab() if (!$loaded);
11959:
11960: my ($hostname) = @_;
11961: return exists($LC_dns_serv{$hostname});
11962: }
11963:
11964: }
11965:
11966: {
11967: my %iphost;
11968: my %name_to_ip;
11969: my %lonid_to_ip;
11970:
11971: sub get_hosts_from_ip {
11972: my ($ip) = @_;
11973: my %iphosts = &get_iphost();
11974: if (ref($iphosts{$ip})) {
11975: return @{$iphosts{$ip}};
11976: }
11977: return;
11978: }
11979:
11980: sub reset_hosts_ip_info {
11981: undef(%iphost);
11982: undef(%name_to_ip);
11983: undef(%lonid_to_ip);
11984: }
11985:
11986: sub get_host_ip {
11987: my ($lonid) = @_;
11988: if (exists($lonid_to_ip{$lonid})) {
11989: return $lonid_to_ip{$lonid};
11990: }
11991: my $name=&hostname($lonid);
11992: my $ip = gethostbyname($name);
11993: return if (!$ip || length($ip) ne 4);
11994: $ip=inet_ntoa($ip);
11995: $name_to_ip{$name} = $ip;
11996: $lonid_to_ip{$lonid} = $ip;
11997: return $ip;
11998: }
11999:
12000: sub get_iphost {
12001: my ($ignore_cache) = @_;
12002:
12003: if (!$ignore_cache) {
12004: if (%iphost) {
12005: return %iphost;
12006: }
12007: my ($ip_info,$cached)=
12008: &Apache::lonnet::is_cached_new('iphost','iphost');
12009: if ($cached) {
12010: %iphost = %{$ip_info->[0]};
12011: %name_to_ip = %{$ip_info->[1]};
12012: %lonid_to_ip = %{$ip_info->[2]};
12013: return %iphost;
12014: }
12015: }
12016:
12017: # get yesterday's info for fallback
12018: my %old_name_to_ip;
12019: my ($ip_info,$cached)=
12020: &Apache::lonnet::is_cached_new('iphost','iphost');
12021: if ($cached) {
12022: %old_name_to_ip = %{$ip_info->[1]};
12023: }
12024:
12025: my %name_to_host = &all_names();
12026: foreach my $name (keys(%name_to_host)) {
12027: my $ip;
12028: if (!exists($name_to_ip{$name})) {
12029: $ip = gethostbyname($name);
12030: if (!$ip || length($ip) ne 4) {
12031: if (defined($old_name_to_ip{$name})) {
12032: $ip = $old_name_to_ip{$name};
12033: &logthis("Can't find $name defaulting to old $ip");
12034: } else {
12035: &logthis("Name $name no IP found");
12036: next;
12037: }
12038: } else {
12039: $ip=inet_ntoa($ip);
12040: }
12041: $name_to_ip{$name} = $ip;
12042: } else {
12043: $ip = $name_to_ip{$name};
12044: }
12045: foreach my $id (@{ $name_to_host{$name} }) {
12046: $lonid_to_ip{$id} = $ip;
12047: }
12048: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12049: }
12050: &do_cache_new('iphost','iphost',
12051: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12052: 48*60*60);
12053:
12054: return %iphost;
12055: }
12056:
12057: #
12058: # Given a DNS returns the loncapa host name for that DNS
12059: #
12060: sub host_from_dns {
12061: my ($dns) = @_;
12062: my @hosts;
12063: my $ip;
12064:
12065: if (exists($name_to_ip{$dns})) {
12066: $ip = $name_to_ip{$dns};
12067: }
12068: if (!$ip) {
12069: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12070: if (length($ip) == 4) {
12071: $ip = &IO::Socket::inet_ntoa($ip);
12072: }
12073: }
12074: if ($ip) {
12075: @hosts = get_hosts_from_ip($ip);
12076: return $hosts[0];
12077: }
12078: return undef;
12079: }
12080:
12081: sub get_internet_names {
12082: my ($lonid) = @_;
12083: return if ($lonid eq '');
12084: my ($idnref,$cached)=
12085: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12086: if ($cached) {
12087: return $idnref;
12088: }
12089: my $ip = &get_host_ip($lonid);
12090: my @hosts = &get_hosts_from_ip($ip);
12091: my %iphost = &get_iphost();
12092: my (@idns,%seen);
12093: foreach my $id (@hosts) {
12094: my $dom = &host_domain($id);
12095: my $prim_id = &domain($dom,'primary');
12096: my $prim_ip = &get_host_ip($prim_id);
12097: next if ($seen{$prim_ip});
12098: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12099: foreach my $id (@{$iphost{$prim_ip}}) {
12100: my $intdom = &internet_dom($id);
12101: unless (grep(/^\Q$intdom\E$/,@idns)) {
12102: push(@idns,$intdom);
12103: }
12104: }
12105: }
12106: $seen{$prim_ip} = 1;
12107: }
12108: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12109: }
12110:
12111: }
12112:
12113: sub all_loncaparevs {
12114: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
12115: }
12116:
12117: # ---------------------------------------------------------- Read loncaparev table
12118: {
12119: sub load_loncaparevs {
12120: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12121: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12122: while (my $configline=<$config>) {
12123: chomp($configline);
12124: my ($hostid,$loncaparev)=split(/:/,$configline);
12125: $loncaparevs{$hostid}=$loncaparev;
12126: }
12127: close($config);
12128: }
12129: }
12130: }
12131: }
12132:
12133: # ---------------------------------------------------------- Read serverhostID table
12134: {
12135: sub load_serverhomeIDs {
12136: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12137: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12138: while (my $configline=<$config>) {
12139: chomp($configline);
12140: my ($name,$id)=split(/:/,$configline);
12141: $serverhomeIDs{$name}=$id;
12142: }
12143: close($config);
12144: }
12145: }
12146: }
12147: }
12148:
12149:
12150: BEGIN {
12151:
12152: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12153: unless ($readit) {
12154: {
12155: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12156: %perlvar = (%perlvar,%{$configvars});
12157: }
12158:
12159:
12160: # ------------------------------------------------------ Read spare server file
12161: {
12162: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12163:
12164: while (my $configline=<$config>) {
12165: chomp($configline);
12166: if ($configline) {
12167: my ($host,$type) = split(':',$configline,2);
12168: if (!defined($type) || $type eq '') { $type = 'default' };
12169: push(@{ $spareid{$type} }, $host);
12170: }
12171: }
12172: close($config);
12173: }
12174: # ------------------------------------------------------------ Read permissions
12175: {
12176: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12177:
12178: while (my $configline=<$config>) {
12179: chomp($configline);
12180: if ($configline) {
12181: my ($role,$perm)=split(/ /,$configline);
12182: if ($perm ne '') { $pr{$role}=$perm; }
12183: }
12184: }
12185: close($config);
12186: }
12187:
12188: # -------------------------------------------- Read plain texts for permissions
12189: {
12190: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12191:
12192: while (my $configline=<$config>) {
12193: chomp($configline);
12194: if ($configline) {
12195: my ($short,@plain)=split(/:/,$configline);
12196: %{$prp{$short}} = ();
12197: if (@plain > 0) {
12198: $prp{$short}{'std'} = $plain[0];
12199: for (my $i=1; $i<@plain; $i++) {
12200: $prp{$short}{'alt'.$i} = $plain[$i];
12201: }
12202: }
12203: }
12204: }
12205: close($config);
12206: }
12207:
12208: # ---------------------------------------------------------- Read package table
12209: {
12210: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12211:
12212: while (my $configline=<$config>) {
12213: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12214: chomp($configline);
12215: my ($short,$plain)=split(/:/,$configline);
12216: my ($pack,$name)=split(/\&/,$short);
12217: if ($plain ne '') {
12218: $packagetab{$pack.'&'.$name.'&name'}=$name;
12219: $packagetab{$short}=$plain;
12220: }
12221: }
12222: close($config);
12223: }
12224:
12225: # ---------------------------------------------------------- Read loncaparev table
12226:
12227: &load_loncaparevs();
12228:
12229: # ---------------------------------------------------------- Read serverhostID table
12230:
12231: &load_serverhomeIDs();
12232:
12233: # ---------------------------------------------------------- Read releaseslist XML
12234: {
12235: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12236: if (-e $file) {
12237: my $parser = HTML::LCParser->new($file);
12238: while (my $token = $parser->get_token()) {
12239: if ($token->[0] eq 'S') {
12240: my $item = $token->[1];
12241: my $name = $token->[2]{'name'};
12242: my $value = $token->[2]{'value'};
12243: if ($item ne '' && $name ne '' && $value ne '') {
12244: my $release = $parser->get_text();
12245: $release =~ s/(^\s*|\s*$ )//gx;
12246: $needsrelease{$item.':'.$name.':'.$value} = $release;
12247: }
12248: }
12249: }
12250: }
12251: }
12252:
12253: # ---------------------------------------------------------- Read managers table
12254: {
12255: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12256: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12257: while (my $configline=<$config>) {
12258: chomp($configline);
12259: next if ($configline =~ /^\#/);
12260: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12261: $managerstab{$configline} = 1;
12262: }
12263: }
12264: close($config);
12265: }
12266: }
12267: }
12268:
12269: # ------------- set up temporary directory
12270: {
12271: $tmpdir = LONCAPA::tempdir();
12272:
12273: }
12274:
12275: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12276: 'compress_threshold'=> 20_000,
12277: });
12278:
12279: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12280: $dumpcount=0;
12281: $locknum=0;
12282:
12283: &logtouch();
12284: &logthis('<font color="yellow">INFO: Read configuration</font>');
12285: $readit=1;
12286: {
12287: use integer;
12288: my $test=(2**32)+1;
12289: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12290: &logthis(" Detected 64bit platform ($_64bit)");
12291: }
12292:
12293: {
12294: eval {
12295: ($apache) =
12296: (Apache2::ServerUtil::get_server_version() =~ m{Apache/(\d+\.\d+)});
12297: };
12298: if ($@) {
12299: $apache = 1.3;
12300: }
12301: }
12302:
12303: }
12304: }
12305:
12306: 1;
12307: __END__
12308:
12309: =pod
12310:
12311: =head1 NAME
12312:
12313: Apache::lonnet - Subroutines to ask questions about things in the network.
12314:
12315: =head1 SYNOPSIS
12316:
12317: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12318:
12319: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12320:
12321: Common parameters:
12322:
12323: =over 4
12324:
12325: =item *
12326:
12327: $uname : an internal username (if $cname expecting a course Id specifically)
12328:
12329: =item *
12330:
12331: $udom : a domain (if $cdom expecting a course's domain specifically)
12332:
12333: =item *
12334:
12335: $symb : a resource instance identifier
12336:
12337: =item *
12338:
12339: $namespace : the name of a .db file that contains the data needed or
12340: being set.
12341:
12342: =back
12343:
12344: =head1 OVERVIEW
12345:
12346: lonnet provides subroutines which interact with the
12347: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12348: about classes, users, and resources.
12349:
12350: For many of these objects you can also use this to store data about
12351: them or modify them in various ways.
12352:
12353: =head2 Symbs
12354:
12355: To identify a specific instance of a resource, LON-CAPA uses symbols
12356: or "symbs"X<symb>. These identifiers are built from the URL of the
12357: map, the resource number of the resource in the map, and the URL of
12358: the resource itself. The latter is somewhat redundant, but might help
12359: if maps change.
12360:
12361: An example is
12362:
12363: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12364:
12365: The respective map entry is
12366:
12367: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12368: title="Problem 2">
12369: </resource>
12370:
12371: Symbs are used by the random number generator, as well as to store and
12372: restore data specific to a certain instance of for example a problem.
12373:
12374: =head2 Storing And Retrieving Data
12375:
12376: X<store()>X<cstore()>X<restore()>Three of the most important functions
12377: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12378: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12379: is is the non-critical message twin of cstore. These functions are for
12380: handlers to store a perl hash to a user's permanent data space in an
12381: easy manner, and to retrieve it again on another call. It is expected
12382: that a handler would use this once at the beginning to retrieve data,
12383: and then again once at the end to send only the new data back.
12384:
12385: The data is stored in the user's data directory on the user's
12386: homeserver under the ID of the course.
12387:
12388: The hash that is returned by restore will have all of the previous
12389: value for all of the elements of the hash.
12390:
12391: Example:
12392:
12393: #creating a hash
12394: my %hash;
12395: $hash{'foo'}='bar';
12396:
12397: #storing it
12398: &Apache::lonnet::cstore(\%hash);
12399:
12400: #changing a value
12401: $hash{'foo'}='notbar';
12402:
12403: #adding a new value
12404: $hash{'bar'}='foo';
12405: &Apache::lonnet::cstore(\%hash);
12406:
12407: #retrieving the hash
12408: my %history=&Apache::lonnet::restore();
12409:
12410: #print the hash
12411: foreach my $key (sort(keys(%history))) {
12412: print("\%history{$key} = $history{$key}");
12413: }
12414:
12415: Will print out:
12416:
12417: %history{1:foo} = bar
12418: %history{1:keys} = foo:timestamp
12419: %history{1:timestamp} = 990455579
12420: %history{2:bar} = foo
12421: %history{2:foo} = notbar
12422: %history{2:keys} = foo:bar:timestamp
12423: %history{2:timestamp} = 990455580
12424: %history{bar} = foo
12425: %history{foo} = notbar
12426: %history{timestamp} = 990455580
12427: %history{version} = 2
12428:
12429: Note that the special hash entries C<keys>, C<version> and
12430: C<timestamp> were added to the hash. C<version> will be equal to the
12431: total number of versions of the data that have been stored. The
12432: C<timestamp> attribute will be the UNIX time the hash was
12433: stored. C<keys> is available in every historical section to list which
12434: keys were added or changed at a specific historical revision of a
12435: hash.
12436:
12437: B<Warning>: do not store the hash that restore returns directly. This
12438: will cause a mess since it will restore the historical keys as if the
12439: were new keys. I.E. 1:foo will become 1:1:foo etc.
12440:
12441: Calling convention:
12442:
12443: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
12444: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname);
12445:
12446: For more detailed information, see lonnet specific documentation.
12447:
12448: =head1 RETURN MESSAGES
12449:
12450: =over 4
12451:
12452: =item * B<con_lost>: unable to contact remote host
12453:
12454: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12455: when the connection is brought back up
12456:
12457: =item * B<con_failed>: unable to contact remote host and unable to save message
12458: for later delivery
12459:
12460: =item * B<error:>: an error a occurred, a description of the error follows the :
12461:
12462: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12463: that was requested
12464:
12465: =back
12466:
12467: =head1 PUBLIC SUBROUTINES
12468:
12469: =head2 Session Environment Functions
12470:
12471: =over 4
12472:
12473: =item *
12474: X<appenv()>
12475: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12476: the user envirnoment file, and will be restored for each access this
12477: user makes during this session, also modifies the %env for the current
12478: process. Optional rolesarrayref - if defined contains a reference to an array
12479: of roles which are exempt from the restriction on modifying user.role entries
12480: in the user's environment.db and in %env.
12481:
12482: =item *
12483: X<delenv()>
12484: B<delenv($delthis,$regexp)>: removes all items from the session
12485: environment file that begin with $delthis. If the
12486: optional second arg - $regexp - is true, $delthis is treated as a
12487: regular expression, otherwise \Q$delthis\E is used.
12488: The values are also deleted from the current processes %env.
12489:
12490: =item * get_env_multiple($name)
12491:
12492: gets $name from the %env hash, it seemlessly handles the cases where multiple
12493: values may be defined and end up as an array ref.
12494:
12495: returns an array of values
12496:
12497: =back
12498:
12499: =head2 User Information
12500:
12501: =over 4
12502:
12503: =item *
12504: X<queryauthenticate()>
12505: B<queryauthenticate($uname,$udom)>: try to determine user's current
12506: authentication scheme
12507:
12508: =item *
12509: X<authenticate()>
12510: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12511: authenticate user from domain's lib servers (first use the current
12512: one). C<$upass> should be the users password.
12513: $checkdefauth is optional (value is 1 if a check should be made to
12514: authenticate user using default authentication method, and allow
12515: account creation if username does not have account in the domain).
12516: $clientcancheckhost is optional (value is 1 if checking whether the
12517: server can host will occur on the client side in lonauth.pm).
12518:
12519: =item *
12520: X<homeserver()>
12521: B<homeserver($uname,$udom)>: find the server which has
12522: the user's directory and files (there must be only one), this caches
12523: the answer, and also caches if there is a borken connection.
12524:
12525: =item *
12526: X<idget()>
12527: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12528: (IDs are a unique resource in a domain, there must be only 1 ID per
12529: username, and only 1 username per ID in a specific domain) (returns
12530: hash: id=>name,id=>name)
12531:
12532: =item *
12533: X<idrget()>
12534: B<idrget($udom,@unames)>: find the IDs behind a list of
12535: usernames (returns hash: name=>id,name=>id)
12536:
12537: =item *
12538: X<idput()>
12539: B<idput($udom,%ids)>: store away a list of names and associated IDs
12540:
12541: =item *
12542: X<rolesinit()>
12543: B<rolesinit($udom,$username)>: get user privileges.
12544: returns user role, first access and timer interval hashes
12545:
12546: =item *
12547: X<privileged()>
12548: B<privileged($username,$domain)>: returns a true if user has a
12549: privileged and active role (i.e. su or dc), false otherwise.
12550:
12551: =item *
12552: X<getsection()>
12553: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12554: course $cname, return section name/number or '' for "not in course"
12555: and '-1' for "no section"
12556:
12557: =item *
12558: X<userenvironment()>
12559: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12560: passed in @what from the requested user's environment, returns a hash
12561:
12562: =item *
12563: X<userlog_query()>
12564: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12565: activity.log file. %filters defines filters applied when parsing the
12566: log file. These can be start or end timestamps, or the type of action
12567: - log to look for Login or Logout events, check for Checkin or
12568: Checkout, role for role selection. The response is in the form
12569: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12570: escaped strings of the action recorded in the activity.log file.
12571:
12572: =back
12573:
12574: =head2 User Roles
12575:
12576: =over 4
12577:
12578: =item *
12579:
12580: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12581: F: full access
12582: U,I,K: authentication modes (cxx only)
12583: '': forbidden
12584: 1: user needs to choose course
12585: 2: browse allowed
12586: A: passphrase authentication needed
12587:
12588: =item *
12589:
12590: constructaccess($url,$setpriv) : check for access to construction space URL
12591:
12592: See if the owner domain and name in the URL match those in the
12593: expected environment. If so, return three element list
12594: ($ownername,$ownerdomain,$ownerhome).
12595:
12596: Otherwise return the null string.
12597:
12598: If second argument 'setpriv' is true, it assigns the privileges,
12599: and returns the same three element list, unless the owner has
12600: blocked "ad hoc" Domain Coordinator access to the Author Space,
12601: in which case the null string is returned.
12602:
12603: =item *
12604:
12605: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12606: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12607: and course level
12608:
12609: =item *
12610:
12611: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12612: (rolesplain.tab); plain text explanation of a user role term.
12613: $type is Course (default) or Community.
12614: If $forcedefault evaluates to true, text returned will be default
12615: text for $type. Otherwise, if this is a course, the text returned
12616: will be a custom name for the role (if defined in the course's
12617: environment). If no custom name is defined the default is returned.
12618:
12619: =item *
12620:
12621: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
12622: All arguments are optional. Returns a hash of a roles, either for
12623: co-author/assistant author roles for a user's Construction Space
12624: (default), or if $context is 'userroles', roles for the user himself,
12625: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12626: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12627: For each key, value is set to colon-separated start and end times for
12628: the role. If no username and domain are specified, will default to
12629: current user/domain. Types, roles, and roledoms are references to arrays
12630: of role statuses (active, future or previous), roles
12631: (e.g., cc,in, st etc.) and domains of the roles which can be used
12632: to restrict the list of roles reported. If no array ref is
12633: provided for types, will default to return only active roles.
12634:
12635: =item *
12636:
12637: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12638: user: $uname:$udom has a role in the course: $cdom_$cnum.
12639:
12640: Additional optional arguments are: $type (if role checking is to be restricted
12641: to certain user status types -- previous (expired roles), active (currently
12642: available roles) or future (roles available in the future), and
12643: $hideprivileged -- if true will not report course roles for users who
12644: have active Domain Coordinator role in course's domain or in additional
12645: domains (specified in 'Domains to check for privileged users' in course
12646: environment -- set via: Course Settings -> Classlists and staff listing).
12647:
12648: =item *
12649:
12650: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
12651: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
12652: $possdomains and $possroles are optional array refs -- to domains to check and
12653: roles to check. If $possdomains is not specified, a dump will be done of the
12654: users' roles.db to check for a dc or su role in any domain. This can be
12655: time consuming if &privileged is called repeatedly (e.g., when displaying a
12656: classlist), so in such cases, supplying a $possdomains array is preferred, as
12657: this then allows &privileged_by_domain() to be used, which caches the identity
12658: of privileged users, eliminating the need for repeated calls to &dump().
12659:
12660: =item *
12661:
12662: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
12663: where the outer hash keys are domains specified in the $possdomains array ref,
12664: next inner hash keys are privileged roles specified in the $roles array ref,
12665: and the innermost hash contains key = value pairs for username:domain = end:start
12666: for active or future "privileged" users with that role in that domain. To avoid
12667: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
12668: innerhash are cached using priv_$role and $dom as the identifiers.
12669:
12670: =back
12671:
12672: =head2 User Modification
12673:
12674: =over 4
12675:
12676: =item *
12677:
12678: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12679: user for the level given by URL. Optional start and end dates (leave empty
12680: string or zero for "no date")
12681:
12682: =item *
12683:
12684: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12685: change a users, password, possible return values are: ok,
12686: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12687: refused
12688:
12689: =item *
12690:
12691: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12692:
12693: =item *
12694:
12695: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12696: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12697:
12698: will update user information (firstname,middlename,lastname,generation,
12699: permanentemail), and if forceid is true, student/employee ID also.
12700: A user's institutional affiliation(s) can also be updated.
12701: User information fields will not be overwritten with empty entries
12702: unless the field is included in the $candelete array reference.
12703: This array is included when a single user is modified via "Manage Users",
12704: or when Autoupdate.pl is run by cron in a domain.
12705:
12706: =item *
12707:
12708: modifystudent
12709:
12710: modify a student's enrollment and identification information.
12711: The course id is resolved based on the current user's environment.
12712: This means the invoking user must be a course coordinator or otherwise
12713: associated with a course.
12714:
12715: This call is essentially a wrapper for lonnet::modifyuser and
12716: lonnet::modify_student_enrollment
12717:
12718: Inputs:
12719:
12720: =over 4
12721:
12722: =item B<$udom> Student's loncapa domain
12723:
12724: =item B<$uname> Student's loncapa login name
12725:
12726: =item B<$uid> Student/Employee ID
12727:
12728: =item B<$umode> Student's authentication mode
12729:
12730: =item B<$upass> Student's password
12731:
12732: =item B<$first> Student's first name
12733:
12734: =item B<$middle> Student's middle name
12735:
12736: =item B<$last> Student's last name
12737:
12738: =item B<$gene> Student's generation
12739:
12740: =item B<$usec> Student's section in course
12741:
12742: =item B<$end> Unix time of the roles expiration
12743:
12744: =item B<$start> Unix time of the roles start date
12745:
12746: =item B<$forceid> If defined, allow $uid to be changed
12747:
12748: =item B<$desiredhome> server to use as home server for student
12749:
12750: =item B<$email> Student's permanent e-mail address
12751:
12752: =item B<$type> Type of enrollment (auto or manual)
12753:
12754: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12755:
12756: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12757:
12758: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12759:
12760: =item B<$context> role change context (shown in User Management Logs display in a course)
12761:
12762: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12763:
12764: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
12765:
12766: =back
12767:
12768: =item *
12769:
12770: modify_student_enrollment
12771:
12772: Change a student's enrollment status in a class. The environment variable
12773: 'role.request.course' must be defined for this function to proceed.
12774:
12775: Inputs:
12776:
12777: =over 4
12778:
12779: =item $udom, student's domain
12780:
12781: =item $uname, student's name
12782:
12783: =item $uid, student's user id
12784:
12785: =item $first, student's first name
12786:
12787: =item $middle
12788:
12789: =item $last
12790:
12791: =item $gene
12792:
12793: =item $usec
12794:
12795: =item $end
12796:
12797: =item $start
12798:
12799: =item $type
12800:
12801: =item $locktype
12802:
12803: =item $cid
12804:
12805: =item $selfenroll
12806:
12807: =item $context
12808:
12809: =item $credits, number of credits student will earn from this class
12810:
12811: =back
12812:
12813:
12814: =item *
12815:
12816: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12817: custom role; give a custom role to a user for the level given by URL. Specify
12818: name and domain of role author, and role name
12819:
12820: =item *
12821:
12822: revokerole($udom,$uname,$url,$role) : revoke a role for url
12823:
12824: =item *
12825:
12826: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12827:
12828: =back
12829:
12830: =head2 Course Infomation
12831:
12832: =over 4
12833:
12834: =item *
12835:
12836: coursedescription($courseid,$options) : returns a hash of information about the
12837: specified course id, including all environment settings for the
12838: course, the description of the course will be in the hash under the
12839: key 'description'
12840:
12841: $options is an optional parameter that if supplied is a hash reference that controls
12842: what how this function works. It has the following key/values:
12843:
12844: =over 4
12845:
12846: =item freshen_cache
12847:
12848: If defined, and the environment cache for the course is valid, it is
12849: returned in the returned hash.
12850:
12851: =item one_time
12852:
12853: If defined, the last cache time is set to _now_
12854:
12855: =item user
12856:
12857: If defined, the supplied username is used instead of the current user.
12858:
12859:
12860: =back
12861:
12862: =item *
12863:
12864: resdata($name,$domain,$type,@which) : request for current parameter
12865: setting for a specific $type, where $type is either 'course' or 'user',
12866: @what should be a list of parameters to ask about. This routine caches
12867: answers for 10 minutes.
12868:
12869: =item *
12870:
12871: get_courseresdata($courseid, $domain) : dump the entire course resource
12872: data base, returning a hash that is keyed by the resource name and has
12873: values that are the resource value. I believe that the timestamps and
12874: versions are also returned.
12875:
12876: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
12877: supplemental content area. This routine caches the number of files for
12878: 10 minutes.
12879:
12880: =back
12881:
12882: =head2 Course Modification
12883:
12884: =over 4
12885:
12886: =item *
12887:
12888: writecoursepref($courseid,%prefs) : write preferences (environment
12889: database) for a course
12890:
12891: =item *
12892:
12893: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12894:
12895: =item *
12896:
12897: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12898:
12899: =item *
12900:
12901: is_course($courseid), is_course($cdom, $cnum)
12902:
12903: Accepts either a combined $courseid (in the form of domain_courseid) or the
12904: two component version $cdom, $cnum. It checks if the specified course exists.
12905:
12906: Returns:
12907: undef if the course doesn't exist, otherwise
12908: in scalar context the combined courseid.
12909: in list context the two components of the course identifier, domain and
12910: courseid.
12911:
12912: =back
12913:
12914: =head2 Resource Subroutines
12915:
12916: =over 4
12917:
12918: =item *
12919:
12920: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12921:
12922: =item *
12923:
12924: repcopy($filename) : subscribes to the requested file, and attempts to
12925: replicate from the owning library server, Might return
12926: 'unavailable', 'not_found', 'forbidden', 'ok', or
12927: 'bad_request', also attempts to grab the metadata for the
12928: resource. Expects the local filesystem pathname
12929: (/home/httpd/html/res/....)
12930:
12931: =back
12932:
12933: =head2 Resource Information
12934:
12935: =over 4
12936:
12937: =item *
12938:
12939: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
12940: and returns the value of a variety of different possible values,
12941: $varname should be a request string, and the other parameters can be
12942: used to specify who and what one is asking about. Ordinarily, $cid
12943: does not need to be specified, as it is retrived from
12944: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
12945: within lonuserstate::loadmap() when initializing a course, before
12946: $env{'request.course.id'} has been set, so it needs to be provided
12947: in that one case.
12948:
12949: Possible values for $varname are environment.lastname (or other item
12950: from the envirnment hash), user.name (or someother aspect about the
12951: user), resource.0.maxtries (or some other part and parameter of a
12952: resource)
12953:
12954: =item *
12955:
12956: directcondval($number) : get current value of a condition; reads from a state
12957: string
12958:
12959: =item *
12960:
12961: condval($condidx) : value of condition index based on state
12962:
12963: =item *
12964:
12965: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12966: resource's metadata, $what should be either a specific key, or either
12967: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12968: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12969:
12970: this function automatically caches all requests
12971:
12972: =item *
12973:
12974: metadata_query($query,$custom,$customshow) : make a metadata query against the
12975: network of library servers; returns file handle of where SQL and regex results
12976: will be stored for query
12977:
12978: =item *
12979:
12980: symbread($filename) : return symbolic list entry (filename argument optional);
12981: returns the data handle
12982:
12983: =item *
12984:
12985: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12986: and is a possible symb for the URL in $thisfn, and if is an encrypted
12987: resource that the user accessed using /enc/ returns a 1 on success, 0
12988: on failure, user must be in a course, as it assumes the existence of
12989: the course initial hash, and uses $env('request.course.id'}. The third
12990: arg is an optional reference to a scalar. If this arg is passed in the
12991: call to symbverify, it will be set to 1 if the symb has been set to be
12992: encrypted; otherwise it will be null.
12993:
12994: =item *
12995:
12996: symbclean($symb) : removes versions numbers from a symb, returns the
12997: cleaned symb
12998:
12999: =item *
13000:
13001: is_on_map($uri) : checks if the $uri is somewhere on the current
13002: course map, user must be in a course for it to work.
13003:
13004: =item *
13005:
13006: numval($salt) : return random seed value (addend for rndseed)
13007:
13008: =item *
13009:
13010: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13011: a random seed, all arguments are optional, if they aren't sent it uses the
13012: environment to derive them. Note: if symb isn't sent and it can't get one
13013: from &symbread it will use the current time as its return value
13014:
13015: =item *
13016:
13017: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13018: unfakeable, receipt
13019:
13020: =item *
13021:
13022: receipt() : API to ireceipt working off of env values; given out to users
13023:
13024: =item *
13025:
13026: countacc($url) : count the number of accesses to a given URL
13027:
13028: =item *
13029:
13030: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13031:
13032: =item *
13033:
13034: checkin($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 $tcrsid)
13035:
13036: =item *
13037:
13038: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13039:
13040: =item *
13041:
13042: devalidate($symb) : devalidate temporary spreadsheet calculations,
13043: forcing spreadsheet to reevaluate the resource scores next time.
13044:
13045: =item *
13046:
13047: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13048: when viewing in course context.
13049:
13050: input: six args -- filename (decluttered), course number, course domain,
13051: url, symb (if registered) and group (if this is a
13052: group item -- e.g., bulletin board, group page etc.).
13053:
13054: output: array of five scalars --
13055: $cfile -- url for file editing if editable on current server
13056: $home -- homeserver of resource (i.e., for author if published,
13057: or course if uploaded.).
13058: $switchserver -- 1 if server switch will be needed.
13059: $forceedit -- 1 if icon/link should be to go to edit mode
13060: $forceview -- 1 if icon/link should be to go to view mode
13061:
13062: =item *
13063:
13064: is_course_upload($file,$cnum,$cdom)
13065:
13066: Used in course context to determine if current file was uploaded to
13067: the course (i.e., would be found in /userfiles/docs on the course's
13068: homeserver.
13069:
13070: input: 3 args -- filename (decluttered), course number and course domain.
13071: output: boolean -- 1 if file was uploaded.
13072:
13073: =back
13074:
13075: =head2 Storing/Retreiving Data
13076:
13077: =over 4
13078:
13079: =item *
13080:
13081: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
13082: for this url; hashref needs to be given and should be a \%hashname; the
13083: remaining args aren't required and if they aren't passed or are '' they will
13084: be derived from the env
13085:
13086: =item *
13087:
13088: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
13089: uses critical subroutine
13090:
13091: =item *
13092:
13093: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13094: all args are optional
13095:
13096: =item *
13097:
13098: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13099: dumps the complete (or key matching regexp) namespace into a hash
13100: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13101: normally &store()ed into
13102:
13103: $range should be either an integer '100' (give me the first 100
13104: matching records)
13105: or be two integers sperated by a - with no spaces
13106: '30-50' (give me the 30th through the 50th matching
13107: records)
13108:
13109:
13110: =item *
13111:
13112: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
13113: replaces a &store() version of data with a replacement set of data
13114: for a particular resource in a namespace passed in the $storehash hash
13115: reference
13116:
13117: =item *
13118:
13119: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13120: works very similar to store/cstore, but all data is stored in a
13121: temporary location and can be reset using tmpreset, $storehash should
13122: be a hash reference, returns nothing on success
13123:
13124: =item *
13125:
13126: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13127: similar to restore, but all data is stored in a temporary location and
13128: can be reset using tmpreset. Returns a hash of values on success,
13129: error string otherwise.
13130:
13131: =item *
13132:
13133: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13134: deltes all keys for $symb form the temporary storage hash.
13135:
13136: =item *
13137:
13138: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13139: reference filled in from namesp ($udom and $uname are optional)
13140:
13141: =item *
13142:
13143: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13144: namesp ($udom and $uname are optional)
13145:
13146: =item *
13147:
13148: dump($namespace,$udom,$uname,$regexp,$range) :
13149: dumps the complete (or key matching regexp) namespace into a hash
13150: ($udom, $uname, $regexp, $range are optional)
13151:
13152: $range should be either an integer '100' (give me the first 100
13153: matching records)
13154: or be two integers sperated by a - with no spaces
13155: '30-50' (give me the 30th through the 50th matching
13156: records)
13157: =item *
13158:
13159: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13160: $store can be a scalar, an array reference, or if the amount to be
13161: incremented is > 1, a hash reference.
13162:
13163: ($udom and $uname are optional)
13164:
13165: =item *
13166:
13167: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13168: ($udom and $uname are optional)
13169:
13170: =item *
13171:
13172: cput($namespace,$storehash,$udom,$uname) : critical put
13173: ($udom and $uname are optional)
13174:
13175: =item *
13176:
13177: newput($namespace,$storehash,$udom,$uname) :
13178:
13179: Attempts to store the items in the $storehash, but only if they don't
13180: currently exist, if this succeeds you can be certain that you have
13181: successfully created a new key value pair in the $namespace db.
13182:
13183:
13184: Args:
13185: $namespace: name of database to store values to
13186: $storehash: hashref to store to the db
13187: $udom: (optional) domain of user containing the db
13188: $uname: (optional) name of user caontaining the db
13189:
13190: Returns:
13191: 'ok' -> succeeded in storing all keys of $storehash
13192: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13193: least <key> already existed in the db (other
13194: requested keys may also already exist)
13195: 'error: <msg>' -> unable to tie the DB or other error occurred
13196: 'con_lost' -> unable to contact request server
13197: 'refused' -> action was not allowed by remote machine
13198:
13199:
13200: =item *
13201:
13202: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13203: reference filled in from namesp (encrypts the return communication)
13204: ($udom and $uname are optional)
13205:
13206: =item *
13207:
13208: log($udom,$name,$home,$message) : write to permanent log for user; use
13209: critical subroutine
13210:
13211: =item *
13212:
13213: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13214: array reference filled in from namespace found in domain level on either
13215: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13216:
13217: =item *
13218:
13219: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13220: domain level either on specified domain server ($uhome) or primary domain
13221: server ($udom and $uhome are optional)
13222:
13223: =item *
13224:
13225: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
13226: for: authentication, language, quotas, timezone, date locale, and portal URL in
13227: the target domain.
13228:
13229: May also include additional key => value pairs for the following groups:
13230:
13231: =over
13232:
13233: =item
13234: disk quotas (MB allocated by default to portfolios and authoring spaces).
13235:
13236: =over
13237:
13238: =item defaultquota, authorquota
13239:
13240: =back
13241:
13242: =item
13243: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
13244: portfolio for users).
13245:
13246: =over
13247:
13248: =item
13249: aboutme, blog, webdav, portfolio
13250:
13251: =back
13252:
13253: =item
13254: requestcourses: ability to request courses, and how requests are processed.
13255:
13256: =over
13257:
13258: =item
13259: official, unofficial, community
13260:
13261: =back
13262:
13263: =item
13264: inststatus: types of institutional affiliation, and order in which they are displayed.
13265:
13266: =over
13267:
13268: =item
13269: inststatustypes, inststatusorder
13270:
13271: =back
13272:
13273: =item
13274: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
13275: for course's uploaded content.
13276:
13277: =over
13278:
13279: =item
13280: canuse_pdfforms, officialcredits, unofficialcredits, officialquota, unofficialquota, communityquota
13281:
13282: =back
13283:
13284: =item
13285: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
13286: on your servers.
13287:
13288: =over
13289:
13290: =item
13291: remotesessions, hostedsessions
13292:
13293: =back
13294:
13295: =back
13296:
13297: In cases where a domain coordinator has never used the "Set Domain Configuration"
13298: utility to create a configuration.db file on a domain's primary library server
13299: only the following domain defaults: auth_def, auth_arg_def, lang_def
13300: -- corresponding values are authentication type (internal, krb4, krb5,
13301: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
13302: will be available. Values are retrieved from cache (if current), unless the
13303: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
13304: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
13305:
13306: Typical usage:
13307:
13308: %domdefaults = &get_domain_defaults($target_domain);
13309:
13310: =back
13311:
13312: =head2 Network Status Functions
13313:
13314: =over 4
13315:
13316: =item *
13317:
13318: dirlist() : return directory list based on URI (first arg).
13319:
13320: Inputs: 1 required, 5 optional.
13321:
13322: =over
13323:
13324: =item
13325: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13326:
13327: =item
13328: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13329:
13330: =item
13331: $username - username of user/course to be listed. Extracted from $uri if absent.
13332:
13333: =item
13334: $getpropath - boolean: 1 if prepend path using &propath().
13335:
13336: =item
13337: $getuserdir - boolean: 1 if prepend path for "userfiles".
13338:
13339: =item
13340: $alternateRoot - path to prepend in place of path from $uri.
13341:
13342: =back
13343:
13344: Returns: Array of up to two items.
13345:
13346: =over
13347:
13348: a reference to an array of files/subdirectories
13349:
13350: =over
13351:
13352: Each element in the array of files/subdirectories is a & separated list of
13353: item name and the result of running stat on the item. If dirlist was requested
13354: for a file instead of a directory, the item name will be ''. For a directory
13355: listing, if the item is a metadata file, the element will end &N&M
13356: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13357: default copyright set (1).
13358:
13359: =back
13360:
13361: a scalar containing error condition (if encountered).
13362:
13363: =over
13364:
13365: =item
13366: no_host (no homeserver identified for $username:$domain).
13367:
13368: =item
13369: no_such_host (server contacted for listing not identified as valid host).
13370:
13371: =item
13372: con_lost (connection to remote server failed).
13373:
13374: =item
13375: refused (invalid $username:$domain received on lond side).
13376:
13377: =item
13378: no_such_dir (directory at specified path on lond side does not exist).
13379:
13380: =item
13381: empty (directory at specified path on lond side is empty).
13382:
13383: =over
13384:
13385: This is currently not encountered because the &ls3, &ls2,
13386: &ls (_handler) routines on the lond side do not filter out
13387: . and .. from a directory listing.
13388:
13389: =back
13390:
13391: =back
13392:
13393: =back
13394:
13395: =item *
13396:
13397: spareserver() : find server with least workload from spare.tab
13398:
13399:
13400: =item *
13401:
13402: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13403: if there is no corresponding loncapa host.
13404:
13405: =back
13406:
13407:
13408: =head2 Apache Request
13409:
13410: =over 4
13411:
13412: =item *
13413:
13414: ssi($url,%hash) : server side include, does a complete request cycle on url to
13415: localhost, posts hash
13416:
13417: =back
13418:
13419: =head2 Data to String to Data
13420:
13421: =over 4
13422:
13423: =item *
13424:
13425: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13426: and '&' separators, supports elements that are arrayrefs and hashrefs
13427:
13428: =item *
13429:
13430: hashref2str($hashref) : convert a hashref into a string complete with
13431: escaping and '=' and '&' separators, supports elements that are
13432: arrayrefs and hashrefs
13433:
13434: =item *
13435:
13436: arrayref2str($arrayref) : convert an arrayref into a string complete
13437: with escaping and '&' separators, supports elements that are arrayrefs
13438: and hashrefs
13439:
13440: =item *
13441:
13442: str2hash($string) : convert string to hash using unescaping and
13443: splitting on '=' and '&', supports elements that are arrayrefs and
13444: hashrefs
13445:
13446: =item *
13447:
13448: str2array($string) : convert string to hash using unescaping and
13449: splitting on '&', supports elements that are arrayrefs and hashrefs
13450:
13451: =back
13452:
13453: =head2 Logging Routines
13454:
13455:
13456: These routines allow one to make log messages in the lonnet.log and
13457: lonnet.perm logfiles.
13458:
13459: =over 4
13460:
13461: =item *
13462:
13463: logtouch() : make sure the logfile, lonnet.log, exists
13464:
13465: =item *
13466:
13467: logthis() : append message to the normal lonnet.log file, it gets
13468: preiodically rolled over and deleted.
13469:
13470: =item *
13471:
13472: logperm() : append a permanent message to lonnet.perm.log, this log
13473: file never gets deleted by any automated portion of the system, only
13474: messages of critical importance should go in here.
13475:
13476:
13477: =back
13478:
13479: =head2 General File Helper Routines
13480:
13481: =over 4
13482:
13483: =item *
13484:
13485: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13486: (a) files in /uploaded
13487: (i) If a local copy of the file exists -
13488: compares modification date of local copy with last-modified date for
13489: definitive version stored on home server for course. If local copy is
13490: stale, requests a new version from the home server and stores it.
13491: If the original has been removed from the home server, then local copy
13492: is unlinked.
13493: (ii) If local copy does not exist -
13494: requests the file from the home server and stores it.
13495:
13496: If $caller is 'uploadrep':
13497: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13498: for request for files originally uploaded via DOCS.
13499: - returns 'ok' if fresh local copy now available, -1 otherwise.
13500:
13501: Otherwise:
13502: This indicates a call from the content generation phase of the request.
13503: - returns the entire contents of the file or -1.
13504:
13505: (b) files in /res
13506: - returns the entire contents of a file or -1;
13507: it properly subscribes to and replicates the file if neccessary.
13508:
13509:
13510: =item *
13511:
13512: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13513: reference
13514:
13515: returns either a stat() list of data about the file or an empty list
13516: if the file doesn't exist or couldn't find out about it (connection
13517: problems or user unknown)
13518:
13519: =item *
13520:
13521: filelocation($dir,$file) : returns file system location of a file
13522: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13523: directory that relative $file lookups are to looked in ($dir of /a/dir
13524: and a file of ../bob will become /a/bob)
13525:
13526: =item *
13527:
13528: hreflocation($dir,$file) : returns file system location or a URL; same as
13529: filelocation except for hrefs
13530:
13531: =item *
13532:
13533: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13534:
13535: =back
13536:
13537: =head2 Usererfile file routines (/uploaded*)
13538:
13539: =over 4
13540:
13541: =item *
13542:
13543: userfileupload(): main rotine for putting a file in a user or course's
13544: filespace, arguments are,
13545:
13546: formname - required - this is the name of the element in $env where the
13547: filename, and the contents of the file to create/modifed exist
13548: the filename is in $env{'form.'.$formname.'.filename'} and the
13549: contents of the file is located in $env{'form.'.$formname}
13550: context - if coursedoc, store the file in the course of the active role
13551: of the current user;
13552: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13553: if 'canceloverwrite': delete file in tmp/overwrites directory
13554: subdir - required - subdirectory to put the file in under ../userfiles/
13555: if undefined, it will be placed in "unknown"
13556:
13557: (This routine calls clean_filename() to remove any dangerous
13558: characters from the filename, and then calls finuserfileupload() to
13559: complete the transaction)
13560:
13561: returns either the url of the uploaded file (/uploaded/....) if successful
13562: and /adm/notfound.html if unsuccessful
13563:
13564: =item *
13565:
13566: clean_filename(): routine for cleaing a filename up for storage in
13567: userfile space, argument is:
13568:
13569: filename - proposed filename
13570:
13571: returns: the new clean filename
13572:
13573: =item *
13574:
13575: finishuserfileupload(): routine that creates and sends the file to
13576: userspace, probably shouldn't be called directly
13577:
13578: docuname: username or courseid of destination for the file
13579: docudom: domain of user/course of destination for the file
13580: formname: same as for userfileupload()
13581: fname: filename (including subdirectories) for the file
13582: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13583: allfiles: reference to hash used to store objects found by parser
13584: codebase: reference to hash used for codebases of java objects found by parser
13585: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13586: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13587: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13588: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13589: context: if 'overwrite', will move the uploaded file from its temporary location to
13590: userfiles to facilitate overwriting a previously uploaded file with same name.
13591: mimetype: reference to scalar to accommodate mime type determined
13592: from File::MMagic if $parser = parse.
13593:
13594: returns either the url of the uploaded file (/uploaded/....) if successful
13595: and /adm/notfound.html if unsuccessful (or an error message if context
13596: was 'overwrite').
13597:
13598:
13599: =item *
13600:
13601: renameuserfile(): renames an existing userfile to a new name
13602:
13603: Args:
13604: docuname: username or courseid of destination for the file
13605: docudom: domain of user/course of destination for the file
13606: old: current file name (including any subdirs under userfiles)
13607: new: desired file name (including any subdirs under userfiles)
13608:
13609: =item *
13610:
13611: mkdiruserfile(): creates a directory is a userfiles dir
13612:
13613: Args:
13614: docuname: username or courseid of destination for the file
13615: docudom: domain of user/course of destination for the file
13616: dir: dir to create (including any subdirs under userfiles)
13617:
13618: =item *
13619:
13620: removeuserfile(): removes a file that exists in userfiles
13621:
13622: Args:
13623: docuname: username or courseid of destination for the file
13624: docudom: domain of user/course of destination for the file
13625: fname: filname to delete (including any subdirs under userfiles)
13626:
13627: =item *
13628:
13629: removeuploadedurl(): convience function for removeuserfile()
13630:
13631: Args:
13632: url: a full /uploaded/... url to delete
13633:
13634: =item *
13635:
13636: get_portfile_permissions():
13637: Args:
13638: domain: domain of user or course contain the portfolio files
13639: user: name of user or num of course contain the portfolio files
13640: Returns:
13641: hashref of a dump of the proper file_permissions.db
13642:
13643:
13644: =item *
13645:
13646: get_access_controls():
13647:
13648: Args:
13649: current_permissions: the hash ref returned from get_portfile_permissions()
13650: group: (optional) the group you want the files associated with
13651: file: (optional) the file you want access info on
13652:
13653: Returns:
13654: a hash (keys are file names) of hashes containing
13655: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13656: values are XML containing access control settings (see below)
13657:
13658: Internal notes:
13659:
13660: access controls are stored in file_permissions.db as key=value pairs.
13661: key -> path to file/file_name\0uniqueID:scope_end_start
13662: where scope -> public,guest,course,group,domains or users.
13663: end -> UNIX time for end of access (0 -> no end date)
13664: start -> UNIX time for start of access
13665:
13666: value -> XML description of access control
13667: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13668: <start></start>
13669: <end></end>
13670:
13671: <password></password> for scope type = guest
13672:
13673: <domain></domain> for scope type = course or group
13674: <number></number>
13675: <roles id="">
13676: <role></role>
13677: <access></access>
13678: <section></section>
13679: <group></group>
13680: </roles>
13681:
13682: <dom></dom> for scope type = domains
13683:
13684: <users> for scope type = users
13685: <user>
13686: <uname></uname>
13687: <udom></udom>
13688: </user>
13689: </users>
13690: </scope>
13691:
13692: Access data is also aggregated for each file in an additional key=value pair:
13693: key -> path to file/file_name\0accesscontrol
13694: value -> reference to hash
13695: hash contains key = value pairs
13696: where key = uniqueID:scope_end_start
13697: value = UNIX time record was last updated
13698:
13699: Used to improve speed of look-ups of access controls for each file.
13700:
13701: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13702:
13703: =item *
13704:
13705: modify_access_controls():
13706:
13707: Modifies access controls for a portfolio file
13708: Args
13709: 1. file name
13710: 2. reference to hash of required changes,
13711: 3. domain
13712: 4. username
13713: where domain,username are the domain of the portfolio owner
13714: (either a user or a course)
13715:
13716: Returns:
13717: 1. result of additions or updates ('ok' or 'error', with error message).
13718: 2. result of deletions ('ok' or 'error', with error message).
13719: 3. reference to hash of any new or updated access controls.
13720: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13721: key = integer (inbound ID)
13722: value = uniqueID
13723:
13724: =item *
13725:
13726: get_timebased_id():
13727:
13728: Attempts to get a unique timestamp-based suffix for use with items added to a
13729: course via the Course Editor (e.g., folders, composite pages,
13730: group bulletin boards).
13731:
13732: Args: (first three required; six others optional)
13733:
13734: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13735: docssequence, or name of group
13736:
13737: 2. keyid (alphanumeric): name of temporary locking key in hash,
13738: e.g., num, boardids
13739:
13740: 3. namespace: name of gdbm file used to store suffixes already assigned;
13741: file will be named nohist_namespace.db
13742:
13743: 4. cdom: domain of course; default is current course domain from %env
13744:
13745: 5. cnum: course number; default is current course number from %env
13746:
13747: 6. idtype: set to concat if an additional digit is to be appended to the
13748: unix timestamp to form the suffix, if the plain timestamp is already
13749: in use. Default is to not do this, but simply increment the unix
13750: timestamp by 1 until a unique key is obtained.
13751:
13752: 7. who: holder of locking key; defaults to user:domain for user.
13753:
13754: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
13755: retrying); default is 3.
13756:
13757: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
13758:
13759: Returns:
13760:
13761: 1. suffix obtained (numeric)
13762:
13763: 2. result of deleting locking key (ok if deleted, or lock never obtained)
13764:
13765: 3. error: contains (localized) error message if an error occurred.
13766:
13767:
13768: =back
13769:
13770: =head2 HTTP Helper Routines
13771:
13772: =over 4
13773:
13774: =item *
13775:
13776: escape() : unpack non-word characters into CGI-compatible hex codes
13777:
13778: =item *
13779:
13780: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13781:
13782: =back
13783:
13784: =head1 PRIVATE SUBROUTINES
13785:
13786: =head2 Underlying communication routines (Shouldn't call)
13787:
13788: =over 4
13789:
13790: =item *
13791:
13792: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13793:
13794: =item *
13795:
13796: reply() : uses subreply to send a message to remote machine, logs all failures
13797:
13798: =item *
13799:
13800: critical() : passes a critical message to another server; if cannot
13801: get through then place message in connection buffer directory and
13802: returns con_delayed, if incapable of saving message, returns
13803: con_failed
13804:
13805: =item *
13806:
13807: reconlonc() : tries to reconnect lonc client processes.
13808:
13809: =back
13810:
13811: =head2 Resource Access Logging
13812:
13813: =over 4
13814:
13815: =item *
13816:
13817: flushcourselogs() : flush (save) buffer logs and access logs
13818:
13819: =item *
13820:
13821: courselog($what) : save message for course in hash
13822:
13823: =item *
13824:
13825: courseacclog($what) : save message for course using &courselog(). Perform
13826: special processing for specific resource types (problems, exams, quizzes, etc).
13827:
13828: =item *
13829:
13830: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13831: as a PerlChildExitHandler
13832:
13833: =back
13834:
13835: =head2 Other
13836:
13837: =over 4
13838:
13839: =item *
13840:
13841: symblist($mapname,%newhash) : update symbolic storage links
13842:
13843: =back
13844:
13845: =cut
13846:
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