File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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Tue Nov 27 23:45:22 2012 UTC (11 years, 7 months ago) by
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- Breadcrumbs trail for uploaded content in nested folders in
Supplemental Content.
- Breadcrumbs trail for external resource in Supplemental Content.
- lonwrapper.pm
- more sanity checking in lonwrapper.pm.
- increase offset for iframe when functions box is populated.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1199 2012/11/27 23:45:22 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$name,$id) = @_;
360: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
361: return $response;
362: }
363:
364: # -------------------------------------------------- Non-critical communication
365: sub subreply {
366: my ($cmd,$server)=@_;
367: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
368: #
369: # With loncnew process trimming, there's a timing hole between lonc server
370: # process exit and the master server picking up the listen on the AF_UNIX
371: # socket. In that time interval, a lock file will exist:
372:
373: my $lockfile=$peerfile.".lock";
374: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
375: sleep(1);
376: }
377: # At this point, either a loncnew parent is listening or an old lonc
378: # or loncnew child is listening so we can connect or everything's dead.
379: #
380: # We'll give the connection a few tries before abandoning it. If
381: # connection is not possible, we'll con_lost back to the client.
382: #
383: my $client;
384: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
385: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
386: Type => SOCK_STREAM,
387: Timeout => 10);
388: if ($client) {
389: last; # Connected!
390: } else {
391: &create_connection(&hostname($server),$server);
392: }
393: sleep(1); # Try again later if failed connection.
394: }
395: my $answer;
396: if ($client) {
397: print $client "sethost:$server:$cmd\n";
398: $answer=<$client>;
399: if (!$answer) { $answer="con_lost"; }
400: chomp($answer);
401: } else {
402: $answer = 'con_lost'; # Failed connection.
403: }
404: return $answer;
405: }
406:
407: sub reply {
408: my ($cmd,$server)=@_;
409: unless (defined(&hostname($server))) { return 'no_such_host'; }
410: my $answer=subreply($cmd,$server);
411: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
412: &logthis("<font color=\"blue\">WARNING:".
413: " $cmd to $server returned $answer</font>");
414: }
415: return $answer;
416: }
417:
418: # ----------------------------------------------------------- Send USR1 to lonc
419:
420: sub reconlonc {
421: my ($lonid) = @_;
422: my $hostname = &hostname($lonid);
423: if ($lonid) {
424: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
425: if ($hostname && -e $peerfile) {
426: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
427: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
428: Type => SOCK_STREAM,
429: Timeout => 10);
430: if ($client) {
431: print $client ("reset_retries\n");
432: my $answer=<$client>;
433: #reset just this one.
434: }
435: }
436: return;
437: }
438:
439: &logthis("Trying to reconnect lonc");
440: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
441: if (open(my $fh,"<$loncfile")) {
442: my $loncpid=<$fh>;
443: chomp($loncpid);
444: if (kill 0 => $loncpid) {
445: &logthis("lonc at pid $loncpid responding, sending USR1");
446: kill USR1 => $loncpid;
447: sleep 1;
448: } else {
449: &logthis(
450: "<font color=\"blue\">WARNING:".
451: " lonc at pid $loncpid not responding, giving up</font>");
452: }
453: } else {
454: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
455: }
456: }
457:
458: # ------------------------------------------------------ Critical communication
459:
460: sub critical {
461: my ($cmd,$server)=@_;
462: unless (&hostname($server)) {
463: &logthis("<font color=\"blue\">WARNING:".
464: " Critical message to unknown server ($server)</font>");
465: return 'no_such_host';
466: }
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: &reconlonc("$perlvar{'lonSockDir'}/$server");
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: my $now=time;
473: my $middlename=$cmd;
474: $middlename=substr($middlename,0,16);
475: $middlename=~s/\W//g;
476: my $dfilename=
477: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
478: $dumpcount++;
479: {
480: my $dfh;
481: if (open($dfh,">$dfilename")) {
482: print $dfh "$cmd\n";
483: close($dfh);
484: }
485: }
486: sleep 2;
487: my $wcmd='';
488: {
489: my $dfh;
490: if (open($dfh,"<$dfilename")) {
491: $wcmd=<$dfh>;
492: close($dfh);
493: }
494: }
495: chomp($wcmd);
496: if ($wcmd eq $cmd) {
497: &logthis("<font color=\"blue\">WARNING: ".
498: "Connection buffer $dfilename: $cmd</font>");
499: &logperm("D:$server:$cmd");
500: return 'con_delayed';
501: } else {
502: &logthis("<font color=\"red\">CRITICAL:"
503: ." Critical connection failed: $server $cmd</font>");
504: &logperm("F:$server:$cmd");
505: return 'con_failed';
506: }
507: }
508: }
509: return $answer;
510: }
511:
512: # ------------------------------------------- check if return value is an error
513:
514: sub error {
515: my ($result) = @_;
516: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
517: if ($2 == 2) { return undef; }
518: return $1;
519: }
520: return undef;
521: }
522:
523: sub convert_and_load_session_env {
524: my ($lonidsdir,$handle)=@_;
525: my @profile;
526: {
527: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
528: if (!$opened) {
529: return 0;
530: }
531: flock($idf,LOCK_SH);
532: @profile=<$idf>;
533: close($idf);
534: }
535: my %temp_env;
536: foreach my $line (@profile) {
537: if ($line !~ m/=/) {
538: return 0;
539: }
540: chomp($line);
541: my ($envname,$envvalue)=split(/=/,$line,2);
542: $temp_env{&unescape($envname)} = &unescape($envvalue);
543: }
544: unlink("$lonidsdir/$handle.id");
545: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
546: 0640)) {
547: %disk_env = %temp_env;
548: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
549: untie(%disk_env);
550: }
551: return 1;
552: }
553:
554: # ------------------------------------------- Transfer profile into environment
555: my $env_loaded;
556: sub transfer_profile_to_env {
557: my ($lonidsdir,$handle,$force_transfer) = @_;
558: if (!$force_transfer && $env_loaded) { return; }
559:
560: if (!defined($lonidsdir)) {
561: $lonidsdir = $perlvar{'lonIDsDir'};
562: }
563: if (!defined($handle)) {
564: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
565: }
566:
567: my $convert;
568: {
569: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
570: if (!$opened) {
571: return;
572: }
573: flock($idf,LOCK_SH);
574: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
575: &GDBM_READER(),0640)) {
576: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
577: untie(%disk_env);
578: } else {
579: $convert = 1;
580: }
581: }
582: if ($convert) {
583: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
584: &logthis("Failed to load session, or convert session.");
585: }
586: }
587:
588: my %remove;
589: while ( my $envname = each(%env) ) {
590: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
591: if ($time < time-300) {
592: $remove{$key}++;
593: }
594: }
595: }
596:
597: $env{'user.environment'} = "$lonidsdir/$handle.id";
598: $env_loaded=1;
599: foreach my $expired_key (keys(%remove)) {
600: &delenv($expired_key);
601: }
602: }
603:
604: # ---------------------------------------------------- Check for valid session
605: sub check_for_valid_session {
606: my ($r,$name) = @_;
607: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
608: if ($name eq '') {
609: $name = 'lonID';
610: }
611: my $lonid=$cookies{$name};
612: return undef if (!$lonid);
613:
614: my $handle=&LONCAPA::clean_handle($lonid->value);
615: my $lonidsdir;
616: if ($name eq 'lonDAV') {
617: $lonidsdir=$r->dir_config('lonDAVsessDir');
618: } else {
619: $lonidsdir=$r->dir_config('lonIDsDir');
620: }
621: return undef if (!-e "$lonidsdir/$handle.id");
622:
623: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
624: return undef if (!$opened);
625:
626: flock($idf,LOCK_SH);
627: my %disk_env;
628: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
629: &GDBM_READER(),0640)) {
630: return undef;
631: }
632:
633: if (!defined($disk_env{'user.name'})
634: || !defined($disk_env{'user.domain'})) {
635: return undef;
636: }
637: return $handle;
638: }
639:
640: sub timed_flock {
641: my ($file,$lock_type) = @_;
642: my $failed=0;
643: eval {
644: local $SIG{__DIE__}='DEFAULT';
645: local $SIG{ALRM}=sub {
646: $failed=1;
647: die("failed lock");
648: };
649: alarm(13);
650: flock($file,$lock_type);
651: alarm(0);
652: };
653: if ($failed) {
654: return undef;
655: } else {
656: return 1;
657: }
658: }
659:
660: # ---------------------------------------------------------- Append Environment
661:
662: sub appenv {
663: my ($newenv,$roles) = @_;
664: if (ref($newenv) eq 'HASH') {
665: foreach my $key (keys(%{$newenv})) {
666: my $refused = 0;
667: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
668: $refused = 1;
669: if (ref($roles) eq 'ARRAY') {
670: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
671: if (grep(/^\Q$role\E$/,@{$roles})) {
672: $refused = 0;
673: }
674: }
675: }
676: if ($refused) {
677: &logthis("<font color=\"blue\">WARNING: ".
678: "Attempt to modify environment ".$key." to ".$newenv->{$key}
679: .'</font>');
680: delete($newenv->{$key});
681: } else {
682: $env{$key}=$newenv->{$key};
683: }
684: }
685: my $opened = open(my $env_file,'+<',$env{'user.environment'});
686: if ($opened
687: && &timed_flock($env_file,LOCK_EX)
688: &&
689: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
690: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
691: while (my ($key,$value) = each(%{$newenv})) {
692: $disk_env{$key} = $value;
693: }
694: untie(%disk_env);
695: }
696: }
697: return 'ok';
698: }
699: # ----------------------------------------------------- Delete from Environment
700:
701: sub delenv {
702: my ($delthis,$regexp,$roles) = @_;
703: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
704: my $refused = 1;
705: if (ref($roles) eq 'ARRAY') {
706: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
707: if (grep(/^\Q$role\E$/,@{$roles})) {
708: $refused = 0;
709: }
710: }
711: if ($refused) {
712: &logthis("<font color=\"blue\">WARNING: ".
713: "Attempt to delete from environment ".$delthis);
714: return 'error';
715: }
716: }
717: my $opened = open(my $env_file,'+<',$env{'user.environment'});
718: if ($opened
719: && &timed_flock($env_file,LOCK_EX)
720: &&
721: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
722: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
723: foreach my $key (keys(%disk_env)) {
724: if ($regexp) {
725: if ($key=~/^$delthis/) {
726: delete($env{$key});
727: delete($disk_env{$key});
728: }
729: } else {
730: if ($key=~/^\Q$delthis\E/) {
731: delete($env{$key});
732: delete($disk_env{$key});
733: }
734: }
735: }
736: untie(%disk_env);
737: }
738: return 'ok';
739: }
740:
741: sub get_env_multiple {
742: my ($name) = @_;
743: my @values;
744: if (defined($env{$name})) {
745: # exists is it an array
746: if (ref($env{$name})) {
747: @values=@{ $env{$name} };
748: } else {
749: $values[0]=$env{$name};
750: }
751: }
752: return(@values);
753: }
754:
755: # ------------------------------------------------------------------- Locking
756:
757: sub set_lock {
758: my ($text)=@_;
759: $locknum++;
760: my $id=$$.'-'.$locknum;
761: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
762: 'session.lock.'.$id => $text});
763: return $id;
764: }
765:
766: sub get_locks {
767: my $num=0;
768: my %texts=();
769: foreach my $lock (split(/\,/,$env{'session.locks'})) {
770: if ($lock=~/\w/) {
771: $num++;
772: $texts{$lock}=$env{'session.lock.'.$lock};
773: }
774: }
775: return ($num,%texts);
776: }
777:
778: sub remove_lock {
779: my ($id)=@_;
780: my $newlocks='';
781: foreach my $lock (split(/\,/,$env{'session.locks'})) {
782: if (($lock=~/\w/) && ($lock ne $id)) {
783: $newlocks.=','.$lock;
784: }
785: }
786: &appenv({'session.locks' => $newlocks});
787: &delenv('session.lock.'.$id);
788: }
789:
790: sub remove_all_locks {
791: my $activelocks=$env{'session.locks'};
792: foreach my $lock (split(/\,/,$env{'session.locks'})) {
793: if ($lock=~/\w/) {
794: &remove_lock($lock);
795: }
796: }
797: }
798:
799:
800: # ------------------------------------------ Find out current server userload
801: sub userload {
802: my $numusers=0;
803: {
804: opendir(LONIDS,$perlvar{'lonIDsDir'});
805: my $filename;
806: my $curtime=time;
807: while ($filename=readdir(LONIDS)) {
808: next if ($filename eq '.' || $filename eq '..');
809: next if ($filename =~ /publicuser_\d+\.id/);
810: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
811: if ($curtime-$mtime < 1800) { $numusers++; }
812: }
813: closedir(LONIDS);
814: }
815: my $userloadpercent=0;
816: my $maxuserload=$perlvar{'lonUserLoadLim'};
817: if ($maxuserload) {
818: $userloadpercent=100*$numusers/$maxuserload;
819: }
820: $userloadpercent=sprintf("%.2f",$userloadpercent);
821: return $userloadpercent;
822: }
823:
824: # ------------------------------ Find server with least workload from spare.tab
825:
826: sub spareserver {
827: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
828: my $spare_server;
829: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
830: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
831: : $userloadpercent;
832: my ($uint_dom,$remotesessions);
833: if (($udom ne '') && (&domain($udom) ne '')) {
834: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
835: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
836: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
837: $remotesessions = $udomdefaults{'remotesessions'};
838: }
839: my $spareshash = &this_host_spares($udom);
840: if (ref($spareshash) eq 'HASH') {
841: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
842: foreach my $try_server (@{ $spareshash->{'primary'} }) {
843: if ($uint_dom) {
844: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
845: $try_server));
846: }
847: ($spare_server, $lowest_load) =
848: &compare_server_load($try_server, $spare_server, $lowest_load);
849: }
850: }
851:
852: my $found_server = ($spare_server ne '' && $lowest_load < 100);
853:
854: if (!$found_server) {
855: if (ref($spareshash->{'default'}) eq 'ARRAY') {
856: foreach my $try_server (@{ $spareshash->{'default'} }) {
857: if ($uint_dom) {
858: next unless (&spare_can_host($udom,$uint_dom,
859: $remotesessions,$try_server));
860: }
861: ($spare_server, $lowest_load) =
862: &compare_server_load($try_server, $spare_server, $lowest_load);
863: }
864: }
865: }
866: }
867:
868: if (!$want_server_name) {
869: my $protocol = 'http';
870: if ($protocol{$spare_server} eq 'https') {
871: $protocol = $protocol{$spare_server};
872: }
873: if (defined($spare_server)) {
874: my $hostname = &hostname($spare_server);
875: if (defined($hostname)) {
876: $spare_server = $protocol.'://'.$hostname;
877: }
878: }
879: }
880: return $spare_server;
881: }
882:
883: sub compare_server_load {
884: my ($try_server, $spare_server, $lowest_load) = @_;
885:
886: my $loadans = &reply('load', $try_server);
887: my $userloadans = &reply('userload',$try_server);
888:
889: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
890: return ($spare_server, $lowest_load); #didn't get a number from the server
891: }
892:
893: my $load;
894: if ($loadans =~ /\d/) {
895: if ($userloadans =~ /\d/) {
896: #both are numbers, pick the bigger one
897: $load = ($loadans > $userloadans) ? $loadans
898: : $userloadans;
899: } else {
900: $load = $loadans;
901: }
902: } else {
903: $load = $userloadans;
904: }
905:
906: if (($load =~ /\d/) && ($load < $lowest_load)) {
907: $spare_server = $try_server;
908: $lowest_load = $load;
909: }
910: return ($spare_server,$lowest_load);
911: }
912:
913: # --------------------------- ask offload servers if user already has a session
914: sub find_existing_session {
915: my ($udom,$uname) = @_;
916: my $spareshash = &this_host_spares($udom);
917: if (ref($spareshash) eq 'HASH') {
918: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
919: foreach my $try_server (@{ $spareshash->{'primary'} }) {
920: return $try_server if (&has_user_session($try_server, $udom, $uname));
921: }
922: }
923: if (ref($spareshash->{'default'}) eq 'ARRAY') {
924: foreach my $try_server (@{ $spareshash->{'default'} }) {
925: return $try_server if (&has_user_session($try_server, $udom, $uname));
926: }
927: }
928: }
929: return;
930: }
931:
932: # -------------------------------- ask if server already has a session for user
933: sub has_user_session {
934: my ($lonid,$udom,$uname) = @_;
935: my $result = &reply(join(':','userhassession',
936: map {&escape($_)} ($udom,$uname)),$lonid);
937: return 1 if ($result eq 'ok');
938:
939: return 0;
940: }
941:
942: # --------- determine least loaded server in a user's domain which allows login
943:
944: sub choose_server {
945: my ($udom,$checkloginvia) = @_;
946: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
947: my %servers = &get_servers($udom);
948: my $lowest_load = 30000;
949: my ($login_host,$hostname,$portal_path,$isredirect);
950: foreach my $lonhost (keys(%servers)) {
951: my $loginvia;
952: if ($checkloginvia) {
953: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
954: if ($loginvia) {
955: my ($server,$path) = split(/:/,$loginvia);
956: ($login_host, $lowest_load) =
957: &compare_server_load($server, $login_host, $lowest_load);
958: if ($login_host eq $server) {
959: $portal_path = $path;
960: $isredirect = 1;
961: }
962: } else {
963: ($login_host, $lowest_load) =
964: &compare_server_load($lonhost, $login_host, $lowest_load);
965: if ($login_host eq $lonhost) {
966: $portal_path = '';
967: $isredirect = '';
968: }
969: }
970: } else {
971: ($login_host, $lowest_load) =
972: &compare_server_load($lonhost, $login_host, $lowest_load);
973: }
974: }
975: if ($login_host ne '') {
976: $hostname = &hostname($login_host);
977: }
978: return ($login_host,$hostname,$portal_path,$isredirect);
979: }
980:
981: # --------------------------------------------- Try to change a user's password
982:
983: sub changepass {
984: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
985: $currentpass = &escape($currentpass);
986: $newpass = &escape($newpass);
987: my $lonhost = $perlvar{'lonHostID'};
988: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
989: $server);
990: if (! $answer) {
991: &logthis("No reply on password change request to $server ".
992: "by $uname in domain $udom.");
993: } elsif ($answer =~ "^ok") {
994: &logthis("$uname in $udom successfully changed their password ".
995: "on $server.");
996: } elsif ($answer =~ "^pwchange_failure") {
997: &logthis("$uname in $udom was unable to change their password ".
998: "on $server. The action was blocked by either lcpasswd ".
999: "or pwchange");
1000: } elsif ($answer =~ "^non_authorized") {
1001: &logthis("$uname in $udom did not get their password correct when ".
1002: "attempting to change it on $server.");
1003: } elsif ($answer =~ "^auth_mode_error") {
1004: &logthis("$uname in $udom attempted to change their password despite ".
1005: "not being locally or internally authenticated on $server.");
1006: } elsif ($answer =~ "^unknown_user") {
1007: &logthis("$uname in $udom attempted to change their password ".
1008: "on $server but were unable to because $server is not ".
1009: "their home server.");
1010: } elsif ($answer =~ "^refused") {
1011: &logthis("$server refused to change $uname in $udom password because ".
1012: "it was sent an unencrypted request to change the password.");
1013: } elsif ($answer =~ "invalid_client") {
1014: &logthis("$server refused to change $uname in $udom password because ".
1015: "it was a reset by e-mail originating from an invalid server.");
1016: }
1017: return $answer;
1018: }
1019:
1020: # ----------------------- Try to determine user's current authentication scheme
1021:
1022: sub queryauthenticate {
1023: my ($uname,$udom)=@_;
1024: my $uhome=&homeserver($uname,$udom);
1025: if (!$uhome) {
1026: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1027: return 'no_host';
1028: }
1029: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1030: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1031: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1032: }
1033: return $answer;
1034: }
1035:
1036: # --------- Try to authenticate user from domain's lib servers (first this one)
1037:
1038: sub authenticate {
1039: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1040: $upass=&escape($upass);
1041: $uname= &LONCAPA::clean_username($uname);
1042: my $uhome=&homeserver($uname,$udom,1);
1043: my $newhome;
1044: if ((!$uhome) || ($uhome eq 'no_host')) {
1045: # Maybe the machine was offline and only re-appeared again recently?
1046: &reconlonc();
1047: # One more
1048: $uhome=&homeserver($uname,$udom,1);
1049: if (($uhome eq 'no_host') && $checkdefauth) {
1050: if (defined(&domain($udom,'primary'))) {
1051: $newhome=&domain($udom,'primary');
1052: }
1053: if ($newhome ne '') {
1054: $uhome = $newhome;
1055: }
1056: }
1057: if ((!$uhome) || ($uhome eq 'no_host')) {
1058: &logthis("User $uname at $udom is unknown in authenticate");
1059: return 'no_host';
1060: }
1061: }
1062: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1063: if ($answer eq 'authorized') {
1064: if ($newhome) {
1065: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1066: return 'no_account_on_host';
1067: } else {
1068: &logthis("User $uname at $udom authorized by $uhome");
1069: return $uhome;
1070: }
1071: }
1072: if ($answer eq 'non_authorized') {
1073: &logthis("User $uname at $udom rejected by $uhome");
1074: return 'no_host';
1075: }
1076: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1077: return 'no_host';
1078: }
1079:
1080: sub can_host_session {
1081: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1082: my $canhost = 1;
1083: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1084: if (ref($remotesessions) eq 'HASH') {
1085: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1086: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1087: $canhost = 0;
1088: } else {
1089: $canhost = 1;
1090: }
1091: }
1092: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1093: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1094: $canhost = 1;
1095: } else {
1096: $canhost = 0;
1097: }
1098: }
1099: if ($canhost) {
1100: if ($remotesessions->{'version'} ne '') {
1101: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1102: if ($reqmajor ne '' && $reqminor ne '') {
1103: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1104: my $major = $1;
1105: my $minor = $2;
1106: if (($major < $reqmajor ) ||
1107: (($major == $reqmajor) && ($minor < $reqminor))) {
1108: $canhost = 0;
1109: }
1110: } else {
1111: $canhost = 0;
1112: }
1113: }
1114: }
1115: }
1116: }
1117: if ($canhost) {
1118: if (ref($hostedsessions) eq 'HASH') {
1119: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1120: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1121: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1122: if (($uint_dom ne '') &&
1123: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1124: $canhost = 0;
1125: } else {
1126: $canhost = 1;
1127: }
1128: }
1129: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1130: if (($uint_dom ne '') &&
1131: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1132: $canhost = 1;
1133: } else {
1134: $canhost = 0;
1135: }
1136: }
1137: }
1138: }
1139: return $canhost;
1140: }
1141:
1142: sub spare_can_host {
1143: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1144: my $canhost=1;
1145: my @intdoms;
1146: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1147: if (ref($internet_names) eq 'ARRAY') {
1148: @intdoms = @{$internet_names};
1149: }
1150: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1151: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1152: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1153: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1154: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1155: $canhost = &can_host_session($udom,$try_server,$remoterev,
1156: $remotesessions,
1157: $defdomdefaults{'hostedsessions'});
1158: }
1159: return $canhost;
1160: }
1161:
1162: sub this_host_spares {
1163: my ($dom) = @_;
1164: my ($dom_in_use,$lonhost_in_use,$result);
1165: my @hosts = ¤t_machine_ids();
1166: foreach my $lonhost (@hosts) {
1167: if (&host_domain($lonhost) eq $dom) {
1168: $dom_in_use = $dom;
1169: $lonhost_in_use = $lonhost;
1170: last;
1171: }
1172: }
1173: if ($dom_in_use ne '') {
1174: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1175: }
1176: if (ref($result) ne 'HASH') {
1177: $lonhost_in_use = $perlvar{'lonHostID'};
1178: $dom_in_use = &host_domain($lonhost_in_use);
1179: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1180: if (ref($result) ne 'HASH') {
1181: $result = \%spareid;
1182: }
1183: }
1184: return $result;
1185: }
1186:
1187: sub spares_for_offload {
1188: my ($dom_in_use,$lonhost_in_use) = @_;
1189: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1190: if (defined($cached)) {
1191: return $result;
1192: } else {
1193: my $cachetime = 60*60*24;
1194: my %domconfig =
1195: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1196: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1197: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1198: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1199: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1200: }
1201: }
1202: }
1203: }
1204: return;
1205: }
1206:
1207: sub get_lonbalancer_config {
1208: my ($servers) = @_;
1209: my ($currbalancer,$currtargets);
1210: if (ref($servers) eq 'HASH') {
1211: foreach my $server (keys(%{$servers})) {
1212: my %what = (
1213: spareid => 1,
1214: perlvar => 1,
1215: );
1216: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1217: if ($result eq 'ok') {
1218: if (ref($returnhash) eq 'HASH') {
1219: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1220: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1221: $currbalancer = $server;
1222: $currtargets = {};
1223: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1224: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1225: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1226: }
1227: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1228: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1229: }
1230: }
1231: last;
1232: }
1233: }
1234: }
1235: }
1236: }
1237: }
1238: return ($currbalancer,$currtargets);
1239: }
1240:
1241: sub check_loadbalancing {
1242: my ($uname,$udom) = @_;
1243: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1244: $rule_in_effect,$offloadto,$otherserver);
1245: my $lonhost = $perlvar{'lonHostID'};
1246: my @hosts = ¤t_machine_ids();
1247: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1248: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1249: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1250: my $serverhomedom = &host_domain($lonhost);
1251:
1252: my $cachetime = 60*60*24;
1253:
1254: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1255: $dom_in_use = $udom;
1256: $homeintdom = 1;
1257: } else {
1258: $dom_in_use = $serverhomedom;
1259: }
1260: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1261: unless (defined($cached)) {
1262: my %domconfig =
1263: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1264: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1265: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1266: }
1267: }
1268: if (ref($result) eq 'HASH') {
1269: ($is_balancer,$currtargets,$currrules) =
1270: &check_balancer_result($result,@hosts);
1271: if ($is_balancer) {
1272: if (ref($currrules) eq 'HASH') {
1273: if ($homeintdom) {
1274: if ($uname ne '') {
1275: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1276: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1277: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1278: $rule_in_effect = $currrules->{'_LC_author'};
1279: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1280: $rule_in_effect = $currrules->{'_LC_adv'}
1281: }
1282: }
1283: if ($rule_in_effect eq '') {
1284: my %userenv = &userenvironment($udom,$uname,'inststatus');
1285: if ($userenv{'inststatus'} ne '') {
1286: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1287: my ($othertitle,$usertypes,$types) =
1288: &Apache::loncommon::sorted_inst_types($udom);
1289: if (ref($types) eq 'ARRAY') {
1290: foreach my $type (@{$types}) {
1291: if (grep(/^\Q$type\E$/,@statuses)) {
1292: if (exists($currrules->{$type})) {
1293: $rule_in_effect = $currrules->{$type};
1294: }
1295: }
1296: }
1297: }
1298: } else {
1299: if (exists($currrules->{'default'})) {
1300: $rule_in_effect = $currrules->{'default'};
1301: }
1302: }
1303: }
1304: } else {
1305: if (exists($currrules->{'default'})) {
1306: $rule_in_effect = $currrules->{'default'};
1307: }
1308: }
1309: } else {
1310: if ($currrules->{'_LC_external'} ne '') {
1311: $rule_in_effect = $currrules->{'_LC_external'};
1312: }
1313: }
1314: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1315: $uname,$udom);
1316: }
1317: }
1318: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1319: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1320: unless (defined($cached)) {
1321: my %domconfig =
1322: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1323: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1324: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1325: }
1326: }
1327: if (ref($result) eq 'HASH') {
1328: ($is_balancer,$currtargets,$currrules) =
1329: &check_balancer_result($result,@hosts);
1330: if ($is_balancer) {
1331: if (ref($currrules) eq 'HASH') {
1332: if ($currrules->{'_LC_internetdom'} ne '') {
1333: $rule_in_effect = $currrules->{'_LC_internetdom'};
1334: }
1335: }
1336: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1337: $uname,$udom);
1338: }
1339: } else {
1340: if ($perlvar{'lonBalancer'} eq 'yes') {
1341: $is_balancer = 1;
1342: $offloadto = &this_host_spares($dom_in_use);
1343: }
1344: }
1345: } else {
1346: if ($perlvar{'lonBalancer'} eq 'yes') {
1347: $is_balancer = 1;
1348: $offloadto = &this_host_spares($dom_in_use);
1349: }
1350: }
1351: if ($is_balancer) {
1352: my $lowest_load = 30000;
1353: if (ref($offloadto) eq 'HASH') {
1354: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1355: foreach my $try_server (@{$offloadto->{'primary'}}) {
1356: ($otherserver,$lowest_load) =
1357: &compare_server_load($try_server,$otherserver,$lowest_load);
1358: }
1359: }
1360: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1361:
1362: if (!$found_server) {
1363: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1364: foreach my $try_server (@{$offloadto->{'default'}}) {
1365: ($otherserver,$lowest_load) =
1366: &compare_server_load($try_server,$otherserver,$lowest_load);
1367: }
1368: }
1369: }
1370: } elsif (ref($offloadto) eq 'ARRAY') {
1371: if (@{$offloadto} == 1) {
1372: $otherserver = $offloadto->[0];
1373: } elsif (@{$offloadto} > 1) {
1374: foreach my $try_server (@{$offloadto}) {
1375: ($otherserver,$lowest_load) =
1376: &compare_server_load($try_server,$otherserver,$lowest_load);
1377: }
1378: }
1379: }
1380: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1381: $is_balancer = 0;
1382: if ($uname ne '' && $udom ne '') {
1383: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1384:
1385: &appenv({'user.loadbalexempt' => $lonhost,
1386: 'user.loadbalcheck.time' => time});
1387: }
1388: }
1389: }
1390: }
1391: return ($is_balancer,$otherserver);
1392: }
1393:
1394: sub check_balancer_result {
1395: my ($result,@hosts) = @_;
1396: my ($is_balancer,$currtargets,$currrules);
1397: if (ref($result) eq 'HASH') {
1398: if ($result->{'lonhost'} ne '') {
1399: my $currbalancer = $result->{'lonhost'};
1400: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1401: $is_balancer = 1;
1402: $currtargets = $result->{'targets'};
1403: $currrules = $result->{'rules'};
1404: }
1405: } else {
1406: foreach my $key (keys(%{$result})) {
1407: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1408: (ref($result->{$key}) eq 'HASH')) {
1409: $is_balancer = 1;
1410: $currrules = $result->{$key}{'rules'};
1411: $currtargets = $result->{$key}{'targets'};
1412: last;
1413: }
1414: }
1415: }
1416: }
1417: return ($is_balancer,$currtargets,$currrules);
1418: }
1419:
1420: sub get_loadbalancer_targets {
1421: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1422: my $offloadto;
1423: if ($rule_in_effect eq 'none') {
1424: return [$perlvar{'lonHostID'}];
1425: } elsif ($rule_in_effect eq '') {
1426: $offloadto = $currtargets;
1427: } else {
1428: if ($rule_in_effect eq 'homeserver') {
1429: my $homeserver = &homeserver($uname,$udom);
1430: if ($homeserver ne 'no_host') {
1431: $offloadto = [$homeserver];
1432: }
1433: } elsif ($rule_in_effect eq 'externalbalancer') {
1434: my %domconfig =
1435: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1436: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1437: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1438: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1439: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1440: }
1441: }
1442: } else {
1443: my %servers = &internet_dom_servers($udom);
1444: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1445: if (&hostname($remotebalancer) ne '') {
1446: $offloadto = [$remotebalancer];
1447: }
1448: }
1449: } elsif (&hostname($rule_in_effect) ne '') {
1450: $offloadto = [$rule_in_effect];
1451: }
1452: }
1453: return $offloadto;
1454: }
1455:
1456: sub internet_dom_servers {
1457: my ($dom) = @_;
1458: my (%uniqservers,%servers);
1459: my $primaryserver = &hostname(&domain($dom,'primary'));
1460: my @machinedoms = &machine_domains($primaryserver);
1461: foreach my $mdom (@machinedoms) {
1462: my %currservers = %servers;
1463: my %server = &get_servers($mdom);
1464: %servers = (%currservers,%server);
1465: }
1466: my %by_hostname;
1467: foreach my $id (keys(%servers)) {
1468: push(@{$by_hostname{$servers{$id}}},$id);
1469: }
1470: foreach my $hostname (sort(keys(%by_hostname))) {
1471: if (@{$by_hostname{$hostname}} > 1) {
1472: my $match = 0;
1473: foreach my $id (@{$by_hostname{$hostname}}) {
1474: if (&host_domain($id) eq $dom) {
1475: $uniqservers{$id} = $hostname;
1476: $match = 1;
1477: }
1478: }
1479: unless ($match) {
1480: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1481: }
1482: } else {
1483: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1484: }
1485: }
1486: return %uniqservers;
1487: }
1488:
1489: # ---------------------- Find the homebase for a user from domain's lib servers
1490:
1491: my %homecache;
1492: sub homeserver {
1493: my ($uname,$udom,$ignoreBadCache)=@_;
1494: my $index="$uname:$udom";
1495:
1496: if (exists($homecache{$index})) { return $homecache{$index}; }
1497:
1498: my %servers = &get_servers($udom,'library');
1499: foreach my $tryserver (keys(%servers)) {
1500: next if ($ignoreBadCache ne 'true' &&
1501: exists($badServerCache{$tryserver}));
1502:
1503: my $answer=reply("home:$udom:$uname",$tryserver);
1504: if ($answer eq 'found') {
1505: delete($badServerCache{$tryserver});
1506: return $homecache{$index}=$tryserver;
1507: } elsif ($answer eq 'no_host') {
1508: $badServerCache{$tryserver}=1;
1509: }
1510: }
1511: return 'no_host';
1512: }
1513:
1514: # ------------------------------------- Find the usernames behind a list of IDs
1515:
1516: sub idget {
1517: my ($udom,@ids)=@_;
1518: my %returnhash=();
1519:
1520: my %servers = &get_servers($udom,'library');
1521: foreach my $tryserver (keys(%servers)) {
1522: my $idlist=join('&',@ids);
1523: $idlist=~tr/A-Z/a-z/;
1524: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1525: my @answer=();
1526: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1527: @answer=split(/\&/,$reply);
1528: } ;
1529: my $i;
1530: for ($i=0;$i<=$#ids;$i++) {
1531: if ($answer[$i]) {
1532: $returnhash{$ids[$i]}=$answer[$i];
1533: }
1534: }
1535: }
1536: return %returnhash;
1537: }
1538:
1539: # ------------------------------------- Find the IDs behind a list of usernames
1540:
1541: sub idrget {
1542: my ($udom,@unames)=@_;
1543: my %returnhash=();
1544: foreach my $uname (@unames) {
1545: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1546: }
1547: return %returnhash;
1548: }
1549:
1550: # ------------------------------- Store away a list of names and associated IDs
1551:
1552: sub idput {
1553: my ($udom,%ids)=@_;
1554: my %servers=();
1555: foreach my $uname (keys(%ids)) {
1556: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1557: my $uhom=&homeserver($uname,$udom);
1558: if ($uhom ne 'no_host') {
1559: my $id=&escape($ids{$uname});
1560: $id=~tr/A-Z/a-z/;
1561: my $esc_unam=&escape($uname);
1562: if ($servers{$uhom}) {
1563: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1564: } else {
1565: $servers{$uhom}=$id.'='.$esc_unam;
1566: }
1567: }
1568: }
1569: foreach my $server (keys(%servers)) {
1570: &critical('idput:'.$udom.':'.$servers{$server},$server);
1571: }
1572: }
1573:
1574: # ------------------------------dump from db file owned by domainconfig user
1575: sub dump_dom {
1576: my ($namespace, $udom, $regexp) = @_;
1577:
1578: $udom ||= $env{'user.domain'};
1579:
1580: return () unless $udom;
1581:
1582: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1583: }
1584:
1585: # ------------------------------------------ get items from domain db files
1586:
1587: sub get_dom {
1588: my ($namespace,$storearr,$udom,$uhome)=@_;
1589: my $items='';
1590: foreach my $item (@$storearr) {
1591: $items.=&escape($item).'&';
1592: }
1593: $items=~s/\&$//;
1594: if (!$udom) {
1595: $udom=$env{'user.domain'};
1596: if (defined(&domain($udom,'primary'))) {
1597: $uhome=&domain($udom,'primary');
1598: } else {
1599: undef($uhome);
1600: }
1601: } else {
1602: if (!$uhome) {
1603: if (defined(&domain($udom,'primary'))) {
1604: $uhome=&domain($udom,'primary');
1605: }
1606: }
1607: }
1608: if ($udom && $uhome && ($uhome ne 'no_host')) {
1609: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1610: my %returnhash;
1611: if ($rep eq '' || $rep =~ /^error: 2 /) {
1612: return %returnhash;
1613: }
1614: my @pairs=split(/\&/,$rep);
1615: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1616: return @pairs;
1617: }
1618: my $i=0;
1619: foreach my $item (@$storearr) {
1620: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1621: $i++;
1622: }
1623: return %returnhash;
1624: } else {
1625: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1626: }
1627: }
1628:
1629: # -------------------------------------------- put items in domain db files
1630:
1631: sub put_dom {
1632: my ($namespace,$storehash,$udom,$uhome)=@_;
1633: if (!$udom) {
1634: $udom=$env{'user.domain'};
1635: if (defined(&domain($udom,'primary'))) {
1636: $uhome=&domain($udom,'primary');
1637: } else {
1638: undef($uhome);
1639: }
1640: } else {
1641: if (!$uhome) {
1642: if (defined(&domain($udom,'primary'))) {
1643: $uhome=&domain($udom,'primary');
1644: }
1645: }
1646: }
1647: if ($udom && $uhome && ($uhome ne 'no_host')) {
1648: my $items='';
1649: foreach my $item (keys(%$storehash)) {
1650: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1651: }
1652: $items=~s/\&$//;
1653: return &reply("putdom:$udom:$namespace:$items",$uhome);
1654: } else {
1655: &logthis("put_dom failed - no homeserver and/or domain");
1656: }
1657: }
1658:
1659: # --------------------- newput for items in db file owned by domainconfig user
1660: sub newput_dom {
1661: my ($namespace,$storehash,$udom) = @_;
1662: my $result;
1663: if (!$udom) {
1664: $udom=$env{'user.domain'};
1665: }
1666: if ($udom) {
1667: my $uname = &get_domainconfiguser($udom);
1668: $result = &newput($namespace,$storehash,$udom,$uname);
1669: }
1670: return $result;
1671: }
1672:
1673: # --------------------- delete for items in db file owned by domainconfig user
1674: sub del_dom {
1675: my ($namespace,$storearr,$udom)=@_;
1676: if (ref($storearr) eq 'ARRAY') {
1677: if (!$udom) {
1678: $udom=$env{'user.domain'};
1679: }
1680: if ($udom) {
1681: my $uname = &get_domainconfiguser($udom);
1682: return &del($namespace,$storearr,$udom,$uname);
1683: }
1684: }
1685: }
1686:
1687: # ----------------------------------construct domainconfig user for a domain
1688: sub get_domainconfiguser {
1689: my ($udom) = @_;
1690: return $udom.'-domainconfig';
1691: }
1692:
1693: sub retrieve_inst_usertypes {
1694: my ($udom) = @_;
1695: my (%returnhash,@order);
1696: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1697: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1698: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1699: %returnhash = %{$domdefs{'inststatustypes'}};
1700: @order = @{$domdefs{'inststatusorder'}};
1701: } else {
1702: if (defined(&domain($udom,'primary'))) {
1703: my $uhome=&domain($udom,'primary');
1704: my $rep=&reply("inst_usertypes:$udom",$uhome);
1705: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1706: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1707: return (\%returnhash,\@order);
1708: }
1709: my ($hashitems,$orderitems) = split(/:/,$rep);
1710: my @pairs=split(/\&/,$hashitems);
1711: foreach my $item (@pairs) {
1712: my ($key,$value)=split(/=/,$item,2);
1713: $key = &unescape($key);
1714: next if ($key =~ /^error: 2 /);
1715: $returnhash{$key}=&thaw_unescape($value);
1716: }
1717: my @esc_order = split(/\&/,$orderitems);
1718: foreach my $item (@esc_order) {
1719: push(@order,&unescape($item));
1720: }
1721: } else {
1722: &logthis("get_dom failed - no primary domain server for $udom");
1723: }
1724: }
1725: return (\%returnhash,\@order);
1726: }
1727:
1728: sub is_domainimage {
1729: my ($url) = @_;
1730: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1731: if (&domain($1) ne '') {
1732: return '1';
1733: }
1734: }
1735: return;
1736: }
1737:
1738: sub inst_directory_query {
1739: my ($srch) = @_;
1740: my $udom = $srch->{'srchdomain'};
1741: my %results;
1742: my $homeserver = &domain($udom,'primary');
1743: my $outcome;
1744: if ($homeserver ne '') {
1745: my $queryid=&reply("querysend:instdirsearch:".
1746: &escape($srch->{'srchby'}).':'.
1747: &escape($srch->{'srchterm'}).':'.
1748: &escape($srch->{'srchtype'}),$homeserver);
1749: my $host=&hostname($homeserver);
1750: if ($queryid !~/^\Q$host\E\_/) {
1751: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1752: return;
1753: }
1754: my $response = &get_query_reply($queryid);
1755: my $maxtries = 5;
1756: my $tries = 1;
1757: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1758: $response = &get_query_reply($queryid);
1759: $tries ++;
1760: }
1761:
1762: if (!&error($response) && $response ne 'refused') {
1763: if ($response eq 'unavailable') {
1764: $outcome = $response;
1765: } else {
1766: $outcome = 'ok';
1767: my @matches = split(/\n/,$response);
1768: foreach my $match (@matches) {
1769: my ($key,$value) = split(/=/,$match);
1770: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1771: }
1772: }
1773: }
1774: }
1775: return ($outcome,%results);
1776: }
1777:
1778: sub usersearch {
1779: my ($srch) = @_;
1780: my $dom = $srch->{'srchdomain'};
1781: my %results;
1782: my %libserv = &all_library();
1783: my $query = 'usersearch';
1784: foreach my $tryserver (keys(%libserv)) {
1785: if (&host_domain($tryserver) eq $dom) {
1786: my $host=&hostname($tryserver);
1787: my $queryid=
1788: &reply("querysend:".&escape($query).':'.
1789: &escape($srch->{'srchby'}).':'.
1790: &escape($srch->{'srchtype'}).':'.
1791: &escape($srch->{'srchterm'}),$tryserver);
1792: if ($queryid !~/^\Q$host\E\_/) {
1793: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1794: next;
1795: }
1796: my $reply = &get_query_reply($queryid);
1797: my $maxtries = 1;
1798: my $tries = 1;
1799: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1800: $reply = &get_query_reply($queryid);
1801: $tries ++;
1802: }
1803: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1804: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1805: } else {
1806: my @matches;
1807: if ($reply =~ /\n/) {
1808: @matches = split(/\n/,$reply);
1809: } else {
1810: @matches = split(/\&/,$reply);
1811: }
1812: foreach my $match (@matches) {
1813: my ($uname,$udom,%userhash);
1814: foreach my $entry (split(/:/,$match)) {
1815: my ($key,$value) =
1816: map {&unescape($_);} split(/=/,$entry);
1817: $userhash{$key} = $value;
1818: if ($key eq 'username') {
1819: $uname = $value;
1820: } elsif ($key eq 'domain') {
1821: $udom = $value;
1822: }
1823: }
1824: $results{$uname.':'.$udom} = \%userhash;
1825: }
1826: }
1827: }
1828: }
1829: return %results;
1830: }
1831:
1832: sub get_instuser {
1833: my ($udom,$uname,$id) = @_;
1834: my $homeserver = &domain($udom,'primary');
1835: my ($outcome,%results);
1836: if ($homeserver ne '') {
1837: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1838: &escape($id).':'.&escape($udom),$homeserver);
1839: my $host=&hostname($homeserver);
1840: if ($queryid !~/^\Q$host\E\_/) {
1841: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1842: return;
1843: }
1844: my $response = &get_query_reply($queryid);
1845: my $maxtries = 5;
1846: my $tries = 1;
1847: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1848: $response = &get_query_reply($queryid);
1849: $tries ++;
1850: }
1851: if (!&error($response) && $response ne 'refused') {
1852: if ($response eq 'unavailable') {
1853: $outcome = $response;
1854: } else {
1855: $outcome = 'ok';
1856: my @matches = split(/\n/,$response);
1857: foreach my $match (@matches) {
1858: my ($key,$value) = split(/=/,$match);
1859: $results{&unescape($key)} = &thaw_unescape($value);
1860: }
1861: }
1862: }
1863: }
1864: my %userinfo;
1865: if (ref($results{$uname}) eq 'HASH') {
1866: %userinfo = %{$results{$uname}};
1867: }
1868: return ($outcome,%userinfo);
1869: }
1870:
1871: sub inst_rulecheck {
1872: my ($udom,$uname,$id,$item,$rules) = @_;
1873: my %returnhash;
1874: if ($udom ne '') {
1875: if (ref($rules) eq 'ARRAY') {
1876: @{$rules} = map {&escape($_);} (@{$rules});
1877: my $rulestr = join(':',@{$rules});
1878: my $homeserver=&domain($udom,'primary');
1879: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1880: my $response;
1881: if ($item eq 'username') {
1882: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1883: ':'.&escape($uname).':'.$rulestr,
1884: $homeserver));
1885: } elsif ($item eq 'id') {
1886: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1887: ':'.&escape($id).':'.$rulestr,
1888: $homeserver));
1889: } elsif ($item eq 'selfcreate') {
1890: $response=&unescape(&reply('instselfcreatecheck:'.
1891: &escape($udom).':'.&escape($uname).
1892: ':'.$rulestr,$homeserver));
1893: }
1894: if ($response ne 'refused') {
1895: my @pairs=split(/\&/,$response);
1896: foreach my $item (@pairs) {
1897: my ($key,$value)=split(/=/,$item,2);
1898: $key = &unescape($key);
1899: next if ($key =~ /^error: 2 /);
1900: $returnhash{$key}=&thaw_unescape($value);
1901: }
1902: }
1903: }
1904: }
1905: }
1906: return %returnhash;
1907: }
1908:
1909: sub inst_userrules {
1910: my ($udom,$check) = @_;
1911: my (%ruleshash,@ruleorder);
1912: if ($udom ne '') {
1913: my $homeserver=&domain($udom,'primary');
1914: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1915: my $response;
1916: if ($check eq 'id') {
1917: $response=&reply('instidrules:'.&escape($udom),
1918: $homeserver);
1919: } elsif ($check eq 'email') {
1920: $response=&reply('instemailrules:'.&escape($udom),
1921: $homeserver);
1922: } else {
1923: $response=&reply('instuserrules:'.&escape($udom),
1924: $homeserver);
1925: }
1926: if (($response ne 'refused') && ($response ne 'error') &&
1927: ($response ne 'unknown_cmd') &&
1928: ($response ne 'no_such_host')) {
1929: my ($hashitems,$orderitems) = split(/:/,$response);
1930: my @pairs=split(/\&/,$hashitems);
1931: foreach my $item (@pairs) {
1932: my ($key,$value)=split(/=/,$item,2);
1933: $key = &unescape($key);
1934: next if ($key =~ /^error: 2 /);
1935: $ruleshash{$key}=&thaw_unescape($value);
1936: }
1937: my @esc_order = split(/\&/,$orderitems);
1938: foreach my $item (@esc_order) {
1939: push(@ruleorder,&unescape($item));
1940: }
1941: }
1942: }
1943: }
1944: return (\%ruleshash,\@ruleorder);
1945: }
1946:
1947: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1948:
1949: sub get_domain_defaults {
1950: my ($domain) = @_;
1951: my $cachetime = 60*60*24;
1952: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1953: if (defined($cached)) {
1954: if (ref($result) eq 'HASH') {
1955: return %{$result};
1956: }
1957: }
1958: my %domdefaults;
1959: my %domconfig =
1960: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1961: 'requestcourses','inststatus',
1962: 'coursedefaults','usersessions',
1963: 'requestauthor'],$domain);
1964: if (ref($domconfig{'defaults'}) eq 'HASH') {
1965: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1966: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1967: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1968: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1969: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1970: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1971: } else {
1972: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1973: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1974: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1975: }
1976: if (ref($domconfig{'quotas'}) eq 'HASH') {
1977: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1978: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1979: } else {
1980: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1981: }
1982: my @usertools = ('aboutme','blog','webdav','portfolio');
1983: foreach my $item (@usertools) {
1984: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1985: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1986: }
1987: }
1988: }
1989: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1990: foreach my $item ('official','unofficial','community') {
1991: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1992: }
1993: }
1994: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
1995: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
1996: }
1997: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1998: foreach my $item ('inststatustypes','inststatusorder') {
1999: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2000: }
2001: }
2002: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2003: foreach my $item ('canuse_pdfforms') {
2004: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
2005: }
2006: }
2007: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2008: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2009: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2010: }
2011: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2012: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2013: }
2014: }
2015: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
2016: $cachetime);
2017: return %domdefaults;
2018: }
2019:
2020: # --------------------------------------------------- Assign a key to a student
2021:
2022: sub assign_access_key {
2023: #
2024: # a valid key looks like uname:udom#comments
2025: # comments are being appended
2026: #
2027: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2028: $kdom=
2029: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2030: $knum=
2031: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2032: $cdom=
2033: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2034: $cnum=
2035: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2036: $udom=$env{'user.name'} unless (defined($udom));
2037: $uname=$env{'user.domain'} unless (defined($uname));
2038: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2039: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2040: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2041: # assigned to this person
2042: # - this should not happen,
2043: # unless something went wrong
2044: # the first time around
2045: # ready to assign
2046: $logentry=$1.'; '.$logentry;
2047: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2048: $kdom,$knum) eq 'ok') {
2049: # key now belongs to user
2050: my $envkey='key.'.$cdom.'_'.$cnum;
2051: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2052: &appenv({'environment.'.$envkey => $ckey});
2053: return 'ok';
2054: } else {
2055: return
2056: 'error: Count not permanently assign key, will need to be re-entered later.';
2057: }
2058: } else {
2059: return 'error: Could not assign key, try again later.';
2060: }
2061: } elsif (!$existing{$ckey}) {
2062: # the key does not exist
2063: return 'error: The key does not exist';
2064: } else {
2065: # the key is somebody else's
2066: return 'error: The key is already in use';
2067: }
2068: }
2069:
2070: # ------------------------------------------ put an additional comment on a key
2071:
2072: sub comment_access_key {
2073: #
2074: # a valid key looks like uname:udom#comments
2075: # comments are being appended
2076: #
2077: my ($ckey,$cdom,$cnum,$logentry)=@_;
2078: $cdom=
2079: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2080: $cnum=
2081: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2082: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2083: if ($existing{$ckey}) {
2084: $existing{$ckey}.='; '.$logentry;
2085: # ready to assign
2086: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2087: $cdom,$cnum) eq 'ok') {
2088: return 'ok';
2089: } else {
2090: return 'error: Count not store comment.';
2091: }
2092: } else {
2093: # the key does not exist
2094: return 'error: The key does not exist';
2095: }
2096: }
2097:
2098: # ------------------------------------------------------ Generate a set of keys
2099:
2100: sub generate_access_keys {
2101: my ($number,$cdom,$cnum,$logentry)=@_;
2102: $cdom=
2103: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2104: $cnum=
2105: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2106: unless (&allowed('mky',$cdom)) { return 0; }
2107: unless (($cdom) && ($cnum)) { return 0; }
2108: if ($number>10000) { return 0; }
2109: sleep(2); # make sure don't get same seed twice
2110: srand(time()^($$+($$<<15))); # from "Programming Perl"
2111: my $total=0;
2112: for (my $i=1;$i<=$number;$i++) {
2113: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2114: sprintf("%lx",int(100000*rand)).'-'.
2115: sprintf("%lx",int(100000*rand));
2116: $newkey=~s/1/g/g; # folks mix up 1 and l
2117: $newkey=~s/0/h/g; # and also 0 and O
2118: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2119: if ($existing{$newkey}) {
2120: $i--;
2121: } else {
2122: if (&put('accesskeys',
2123: { $newkey => '# generated '.localtime().
2124: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2125: '; '.$logentry },
2126: $cdom,$cnum) eq 'ok') {
2127: $total++;
2128: }
2129: }
2130: }
2131: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2132: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2133: return $total;
2134: }
2135:
2136: # ------------------------------------------------------- Validate an accesskey
2137:
2138: sub validate_access_key {
2139: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2140: $cdom=
2141: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2142: $cnum=
2143: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2144: $udom=$env{'user.domain'} unless (defined($udom));
2145: $uname=$env{'user.name'} unless (defined($uname));
2146: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2147: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2148: }
2149:
2150: # ------------------------------------- Find the section of student in a course
2151: sub devalidate_getsection_cache {
2152: my ($udom,$unam,$courseid)=@_;
2153: my $hashid="$udom:$unam:$courseid";
2154: &devalidate_cache_new('getsection',$hashid);
2155: }
2156:
2157: sub courseid_to_courseurl {
2158: my ($courseid) = @_;
2159: #already url style courseid
2160: return $courseid if ($courseid =~ m{^/});
2161:
2162: if (exists($env{'course.'.$courseid.'.num'})) {
2163: my $cnum = $env{'course.'.$courseid.'.num'};
2164: my $cdom = $env{'course.'.$courseid.'.domain'};
2165: return "/$cdom/$cnum";
2166: }
2167:
2168: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2169: if (exists($courseinfo{'num'})) {
2170: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2171: }
2172:
2173: return undef;
2174: }
2175:
2176: sub getsection {
2177: my ($udom,$unam,$courseid)=@_;
2178: my $cachetime=1800;
2179:
2180: my $hashid="$udom:$unam:$courseid";
2181: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2182: if (defined($cached)) { return $result; }
2183:
2184: my %Pending;
2185: my %Expired;
2186: #
2187: # Each role can either have not started yet (pending), be active,
2188: # or have expired.
2189: #
2190: # If there is an active role, we are done.
2191: #
2192: # If there is more than one role which has not started yet,
2193: # choose the one which will start sooner
2194: # If there is one role which has not started yet, return it.
2195: #
2196: # If there is more than one expired role, choose the one which ended last.
2197: # If there is a role which has expired, return it.
2198: #
2199: $courseid = &courseid_to_courseurl($courseid);
2200: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2201: foreach my $key (keys(%roleshash)) {
2202: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2203: my $section=$1;
2204: if ($key eq $courseid.'_st') { $section=''; }
2205: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2206: my $now=time;
2207: if (defined($end) && $end && ($now > $end)) {
2208: $Expired{$end}=$section;
2209: next;
2210: }
2211: if (defined($start) && $start && ($now < $start)) {
2212: $Pending{$start}=$section;
2213: next;
2214: }
2215: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2216: }
2217: #
2218: # Presumedly there will be few matching roles from the above
2219: # loop and the sorting time will be negligible.
2220: if (scalar(keys(%Pending))) {
2221: my ($time) = sort {$a <=> $b} keys(%Pending);
2222: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2223: }
2224: if (scalar(keys(%Expired))) {
2225: my @sorted = sort {$a <=> $b} keys(%Expired);
2226: my $time = pop(@sorted);
2227: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2228: }
2229: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2230: }
2231:
2232: sub save_cache {
2233: &purge_remembered();
2234: #&Apache::loncommon::validate_page();
2235: undef(%env);
2236: undef($env_loaded);
2237: }
2238:
2239: my $to_remember=-1;
2240: my %remembered;
2241: my %accessed;
2242: my $kicks=0;
2243: my $hits=0;
2244: sub make_key {
2245: my ($name,$id) = @_;
2246: if (length($id) > 65
2247: && length(&escape($id)) > 200) {
2248: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2249: }
2250: return &escape($name.':'.$id);
2251: }
2252:
2253: sub devalidate_cache_new {
2254: my ($name,$id,$debug) = @_;
2255: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2256: $id=&make_key($name,$id);
2257: $memcache->delete($id);
2258: delete($remembered{$id});
2259: delete($accessed{$id});
2260: }
2261:
2262: sub is_cached_new {
2263: my ($name,$id,$debug) = @_;
2264: $id=&make_key($name,$id);
2265: if (exists($remembered{$id})) {
2266: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2267: $accessed{$id}=[&gettimeofday()];
2268: $hits++;
2269: return ($remembered{$id},1);
2270: }
2271: my $value = $memcache->get($id);
2272: if (!(defined($value))) {
2273: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2274: return (undef,undef);
2275: }
2276: if ($value eq '__undef__') {
2277: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2278: $value=undef;
2279: }
2280: &make_room($id,$value,$debug);
2281: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2282: return ($value,1);
2283: }
2284:
2285: sub do_cache_new {
2286: my ($name,$id,$value,$time,$debug) = @_;
2287: $id=&make_key($name,$id);
2288: my $setvalue=$value;
2289: if (!defined($setvalue)) {
2290: $setvalue='__undef__';
2291: }
2292: if (!defined($time) ) {
2293: $time=600;
2294: }
2295: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2296: my $result = $memcache->set($id,$setvalue,$time);
2297: if (! $result) {
2298: &logthis("caching of id -> $id failed");
2299: $memcache->disconnect_all();
2300: }
2301: # need to make a copy of $value
2302: &make_room($id,$value,$debug);
2303: return $value;
2304: }
2305:
2306: sub make_room {
2307: my ($id,$value,$debug)=@_;
2308:
2309: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2310: : $value;
2311: if ($to_remember<0) { return; }
2312: $accessed{$id}=[&gettimeofday()];
2313: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2314: my $to_kick;
2315: my $max_time=0;
2316: foreach my $other (keys(%accessed)) {
2317: if (&tv_interval($accessed{$other}) > $max_time) {
2318: $to_kick=$other;
2319: $max_time=&tv_interval($accessed{$other});
2320: }
2321: }
2322: delete($remembered{$to_kick});
2323: delete($accessed{$to_kick});
2324: $kicks++;
2325: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2326: return;
2327: }
2328:
2329: sub purge_remembered {
2330: #&logthis("Tossing ".scalar(keys(%remembered)));
2331: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2332: undef(%remembered);
2333: undef(%accessed);
2334: }
2335: # ------------------------------------- Read an entry from a user's environment
2336:
2337: sub userenvironment {
2338: my ($udom,$unam,@what)=@_;
2339: my $items;
2340: foreach my $item (@what) {
2341: $items.=&escape($item).'&';
2342: }
2343: $items=~s/\&$//;
2344: my %returnhash=();
2345: my $uhome = &homeserver($unam,$udom);
2346: unless ($uhome eq 'no_host') {
2347: my @answer=split(/\&/,
2348: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2349: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2350: return %returnhash;
2351: }
2352: my $i;
2353: for ($i=0;$i<=$#what;$i++) {
2354: $returnhash{$what[$i]}=&unescape($answer[$i]);
2355: }
2356: }
2357: return %returnhash;
2358: }
2359:
2360: # ---------------------------------------------------------- Get a studentphoto
2361: sub studentphoto {
2362: my ($udom,$unam,$ext) = @_;
2363: my $home=&Apache::lonnet::homeserver($unam,$udom);
2364: if (defined($env{'request.course.id'})) {
2365: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2366: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2367: return(&retrievestudentphoto($udom,$unam,$ext));
2368: } else {
2369: my ($result,$perm_reqd)=
2370: &Apache::lonnet::auto_photo_permission($unam,$udom);
2371: if ($result eq 'ok') {
2372: if (!($perm_reqd eq 'yes')) {
2373: return(&retrievestudentphoto($udom,$unam,$ext));
2374: }
2375: }
2376: }
2377: }
2378: } else {
2379: my ($result,$perm_reqd) =
2380: &Apache::lonnet::auto_photo_permission($unam,$udom);
2381: if ($result eq 'ok') {
2382: if (!($perm_reqd eq 'yes')) {
2383: return(&retrievestudentphoto($udom,$unam,$ext));
2384: }
2385: }
2386: }
2387: return '/adm/lonKaputt/lonlogo_broken.gif';
2388: }
2389:
2390: sub retrievestudentphoto {
2391: my ($udom,$unam,$ext,$type) = @_;
2392: my $home=&Apache::lonnet::homeserver($unam,$udom);
2393: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2394: if ($ret eq 'ok') {
2395: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2396: if ($type eq 'thumbnail') {
2397: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2398: }
2399: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2400: return $tokenurl;
2401: } else {
2402: if ($type eq 'thumbnail') {
2403: return '/adm/lonKaputt/genericstudent_tn.gif';
2404: } else {
2405: return '/adm/lonKaputt/lonlogo_broken.gif';
2406: }
2407: }
2408: }
2409:
2410: # -------------------------------------------------------------------- New chat
2411:
2412: sub chatsend {
2413: my ($newentry,$anon,$group)=@_;
2414: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2415: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2416: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2417: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2418: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2419: &escape($newentry)).':'.$group,$chome);
2420: }
2421:
2422: # ------------------------------------------ Find current version of a resource
2423:
2424: sub getversion {
2425: my $fname=&clutter(shift);
2426: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2427: return ¤tversion(&filelocation('',$fname));
2428: }
2429:
2430: sub currentversion {
2431: my $fname=shift;
2432: my $author=$fname;
2433: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2434: my ($udom,$uname)=split(/\//,$author);
2435: my $home=&homeserver($uname,$udom);
2436: if ($home eq 'no_host') {
2437: return -1;
2438: }
2439: my $answer=&reply("currentversion:$fname",$home);
2440: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2441: return -1;
2442: }
2443: return $answer;
2444: }
2445:
2446: #
2447: # Return special version number of resource if set by override, empty otherwise
2448: #
2449: sub usedversion {
2450: my $fname=shift;
2451: unless ($fname) { $fname=$env{'request.uri'}; }
2452: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2453: if ($urlversion) { return $urlversion; }
2454: return '';
2455: }
2456:
2457: # ----------------------------- Subscribe to a resource, return URL if possible
2458:
2459: sub subscribe {
2460: my $fname=shift;
2461: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2462: $fname=~s/[\n\r]//g;
2463: my $author=$fname;
2464: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2465: my ($udom,$uname)=split(/\//,$author);
2466: my $home=homeserver($uname,$udom);
2467: if ($home eq 'no_host') {
2468: return 'not_found';
2469: }
2470: my $answer=reply("sub:$fname",$home);
2471: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2472: $answer.=' by '.$home;
2473: }
2474: return $answer;
2475: }
2476:
2477: # -------------------------------------------------------------- Replicate file
2478:
2479: sub repcopy {
2480: my $filename=shift;
2481: $filename=~s/\/+/\//g;
2482: my $londocroot = $perlvar{'lonDocRoot'};
2483: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2484: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2485: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2486: $filename=~m{^/*(uploaded|editupload)/}) {
2487: return &repcopy_userfile($filename);
2488: }
2489: $filename=~s/[\n\r]//g;
2490: my $transname="$filename.in.transfer";
2491: # FIXME: this should flock
2492: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2493: my $remoteurl=subscribe($filename);
2494: if ($remoteurl =~ /^con_lost by/) {
2495: &logthis("Subscribe returned $remoteurl: $filename");
2496: return 'unavailable';
2497: } elsif ($remoteurl eq 'not_found') {
2498: #&logthis("Subscribe returned not_found: $filename");
2499: return 'not_found';
2500: } elsif ($remoteurl =~ /^rejected by/) {
2501: &logthis("Subscribe returned $remoteurl: $filename");
2502: return 'forbidden';
2503: } elsif ($remoteurl eq 'directory') {
2504: return 'ok';
2505: } else {
2506: my $author=$filename;
2507: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2508: my ($udom,$uname)=split(/\//,$author);
2509: my $home=homeserver($uname,$udom);
2510: unless ($home eq $perlvar{'lonHostID'}) {
2511: my @parts=split(/\//,$filename);
2512: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2513: if ($path ne "$londocroot/res") {
2514: &logthis("Malconfiguration for replication: $filename");
2515: return 'bad_request';
2516: }
2517: my $count;
2518: for ($count=5;$count<$#parts;$count++) {
2519: $path.="/$parts[$count]";
2520: if ((-e $path)!=1) {
2521: mkdir($path,0777);
2522: }
2523: }
2524: my $ua=new LWP::UserAgent;
2525: my $request=new HTTP::Request('GET',"$remoteurl");
2526: my $response=$ua->request($request,$transname);
2527: if ($response->is_error()) {
2528: unlink($transname);
2529: my $message=$response->status_line;
2530: &logthis("<font color=\"blue\">WARNING:"
2531: ." LWP get: $message: $filename</font>");
2532: return 'unavailable';
2533: } else {
2534: if ($remoteurl!~/\.meta$/) {
2535: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2536: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2537: if ($mresponse->is_error()) {
2538: unlink($filename.'.meta');
2539: &logthis(
2540: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2541: }
2542: }
2543: rename($transname,$filename);
2544: return 'ok';
2545: }
2546: }
2547: }
2548: }
2549:
2550: # ------------------------------------------------ Get server side include body
2551: sub ssi_body {
2552: my ($filelink,%form)=@_;
2553: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2554: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2555: }
2556: my $output='';
2557: my $response;
2558: if ($filelink=~/^https?\:/) {
2559: ($output,$response)=&externalssi($filelink);
2560: } else {
2561: $filelink .= $filelink=~/\?/ ? '&' : '?';
2562: $filelink .= 'inhibitmenu=yes';
2563: ($output,$response)=&ssi($filelink,%form);
2564: }
2565: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2566: $output=~s/^.*?\<body[^\>]*\>//si;
2567: $output=~s/\<\/body\s*\>.*?$//si;
2568: if (wantarray) {
2569: return ($output, $response);
2570: } else {
2571: return $output;
2572: }
2573: }
2574:
2575: # --------------------------------------------------------- Server Side Include
2576:
2577: sub absolute_url {
2578: my ($host_name) = @_;
2579: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2580: if ($host_name eq '') {
2581: $host_name = $ENV{'SERVER_NAME'};
2582: }
2583: return $protocol.$host_name;
2584: }
2585:
2586: #
2587: # Server side include.
2588: # Parameters:
2589: # fn Possibly encrypted resource name/id.
2590: # form Hash that describes how the rendering should be done
2591: # and other things.
2592: # Returns:
2593: # Scalar context: The content of the response.
2594: # Array context: 2 element list of the content and the full response object.
2595: #
2596: sub ssi {
2597:
2598: my ($fn,%form)=@_;
2599: my $ua=new LWP::UserAgent;
2600: my $request;
2601:
2602: $form{'no_update_last_known'}=1;
2603: &Apache::lonenc::check_encrypt(\$fn);
2604: if (%form) {
2605: $request=new HTTP::Request('POST',&absolute_url().$fn);
2606: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2607: } else {
2608: $request=new HTTP::Request('GET',&absolute_url().$fn);
2609: }
2610:
2611: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2612: my $response= $ua->request($request);
2613: my $content = $response->content;
2614:
2615:
2616: if (wantarray) {
2617: return ($content, $response);
2618: } else {
2619: return $content;
2620: }
2621: }
2622:
2623: sub externalssi {
2624: my ($url)=@_;
2625: my $ua=new LWP::UserAgent;
2626: my $request=new HTTP::Request('GET',$url);
2627: my $response=$ua->request($request);
2628: if (wantarray) {
2629: return ($response->content, $response);
2630: } else {
2631: return $response->content;
2632: }
2633: }
2634:
2635: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2636:
2637: sub allowuploaded {
2638: my ($srcurl,$url)=@_;
2639: $url=&clutter(&declutter($url));
2640: my $dir=$url;
2641: $dir=~s/\/[^\/]+$//;
2642: my %httpref=();
2643: my $httpurl=&hreflocation('',$url);
2644: $httpref{'httpref.'.$httpurl}=$srcurl;
2645: &Apache::lonnet::appenv(\%httpref);
2646: }
2647:
2648: #
2649: # Determine if the current user should be able to edit a particular resource,
2650: # when viewing in course context.
2651: # (a) When viewing resource used to determine if "Edit" item is included in
2652: # Functions.
2653: # (b) When displaying folder contents in course editor, used to determine if
2654: # "Edit" link will be displayed alongside resource.
2655: #
2656: # input: six args -- filename (decluttered), course number, course domain,
2657: # url, symb (if registered) and group (if this is a group
2658: # item -- e.g., bulletin board, group page etc.).
2659: # output: array of five scalars --
2660: # $cfile -- url for file editing if editable on current server
2661: # $home -- homeserver of resource (i.e., for author if published,
2662: # or course if uploaded.).
2663: # $switchserver -- 1 if server switch will be needed.
2664: # $forceedit -- 1 if icon/link should be to go to edit mode
2665: # $forceview -- 1 if icon/link should be to go to view mode
2666: #
2667:
2668: sub can_edit_resource {
2669: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2670: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2671: #
2672: # For aboutme pages user can only edit his/her own.
2673: #
2674: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2675: my ($sdom,$sname) = ($1,$2);
2676: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2677: $home = $env{'user.home'};
2678: $cfile = $resurl;
2679: if ($env{'form.forceedit'}) {
2680: $forceview = 1;
2681: } else {
2682: $forceedit = 1;
2683: }
2684: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2685: } else {
2686: return;
2687: }
2688: }
2689:
2690: if ($env{'request.course.id'}) {
2691: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2692: if ($group ne '') {
2693: # if this is a group homepage or group bulletin board, check group privs
2694: my $allowed = 0;
2695: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2696: if ((&allowed('mdg',$env{'request.course.id'}.
2697: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2698: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2699: $allowed = 1;
2700: }
2701: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2702: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2703: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2704: $allowed = 1;
2705: }
2706: }
2707: if ($allowed) {
2708: $home=&homeserver($cnum,$cdom);
2709: if ($env{'form.forceedit'}) {
2710: $forceview = 1;
2711: } else {
2712: $forceedit = 1;
2713: }
2714: $cfile = $resurl;
2715: } else {
2716: return;
2717: }
2718: } else {
2719: #
2720: # No edit allowed where CC has switched to student role.
2721: #
2722: unless ($crsedit) {
2723: return;
2724: }
2725: }
2726: }
2727:
2728: if ($file ne '') {
2729: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2730: if (&is_course_upload($file,$cnum,$cdom)) {
2731: $uploaded = 1;
2732: $incourse = 1;
2733: if ($file =~/\.(htm|html|css|js|txt)$/) {
2734: $cfile = &hreflocation('',$file);
2735: $forceedit = 1;
2736: }
2737: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2738: $incourse = 1;
2739: if ($env{'form.forceedit'}) {
2740: $forceview = 1;
2741: } else {
2742: $forceedit = 1;
2743: }
2744: $cfile = $resurl;
2745: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2746: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2747: $incourse = 1;
2748: if ($env{'form.forceedit'}) {
2749: $forceview = 1;
2750: } else {
2751: $forceedit = 1;
2752: }
2753: $cfile = $resurl;
2754: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2755: $incourse = 1;
2756: $cfile = $resurl.'/smpedit';
2757: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2758: $incourse = 1;
2759: if ($env{'form.forceedit'}) {
2760: $forceview = 1;
2761: } else {
2762: $forceedit = 1;
2763: }
2764: $cfile = $resurl;
2765: }
2766: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2767: my $template = '/res/lib/templates/simpleproblem.problem';
2768: if (&is_on_map($template)) {
2769: $incourse = 1;
2770: $forceview = 1;
2771: $cfile = $template;
2772: }
2773: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
2774: $incourse = 1;
2775: if ($env{'form.forceedit'}) {
2776: $forceview = 1;
2777: } else {
2778: $forceedit = 1;
2779: }
2780: $cfile = $resurl;
2781: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
2782: $incourse = 1;
2783: $forceview = 1;
2784: if ($symb) {
2785: my ($map,$id,$res)=&decode_symb($symb);
2786: $env{'request.symb'} = $symb;
2787: $cfile = &clutter($res);
2788: } else {
2789: $cfile = $env{'form.suppurl'};
2790: $cfile =~ s{^http://}{};
2791: $cfile = '/adm/wrapper/ext/'.$cfile;
2792: }
2793: }
2794: }
2795: if ($uploaded || $incourse) {
2796: $home=&homeserver($cnum,$cdom);
2797: } else {
2798: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
2799: $file=~s{^($match_domain/$match_username)}{/priv/$1};
2800: # Check that the user has permission to edit this resource
2801: my $setpriv = 1;
2802: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
2803: if (defined($cfudom)) {
2804: $home=&homeserver($cfuname,$cfudom);
2805: $cfile=$file;
2806: }
2807: }
2808: if (($cfile ne '') && (!$incourse || $uploaded) &&
2809: (($home ne '') && ($home ne 'no_host'))) {
2810: my @ids=¤t_machine_ids();
2811: unless (grep(/^\Q$home\E$/,@ids)) {
2812: $switchserver=1;
2813: }
2814: }
2815: }
2816: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2817: }
2818:
2819: sub is_course_upload {
2820: my ($file,$cnum,$cdom) = @_;
2821: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
2822: $uploadpath =~ s{^\/}{};
2823: if (($file =~ m{^\Q$uploadpath\E/userfiles/docs/}) ||
2824: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/docs/})) {
2825: return 1;
2826: }
2827: return;
2828: }
2829:
2830: sub in_course {
2831: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
2832: if ($hideprivileged) {
2833: my $skipuser;
2834: if (&privileged($uname,$udom)) {
2835: $skipuser = 1;
2836: my %coursehash = &coursedescription($cdom.'_'.$cnum);
2837: if ($coursehash{'nothideprivileged'}) {
2838: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2839: my $user;
2840: if ($item =~ /:/) {
2841: $user = $item;
2842: } else {
2843: $user = join(':',split(/[\@]/,$item));
2844: }
2845: if ($user eq $uname.':'.$udom) {
2846: undef($skipuser);
2847: last;
2848: }
2849: }
2850: }
2851: if ($skipuser) {
2852: return 0;
2853: }
2854: }
2855: }
2856: $type ||= 'any';
2857: if (!defined($cdom) || !defined($cnum)) {
2858: my $cid = $env{'request.course.id'};
2859: $cdom = $env{'course.'.$cid.'.domain'};
2860: $cnum = $env{'course.'.$cid.'.num'};
2861: }
2862: my $typesref;
2863: if (($type eq 'any') || ($type eq 'all')) {
2864: $typesref = ['active','previous','future'];
2865: } elsif ($type eq 'previous' || $type eq 'future') {
2866: $typesref = [$type];
2867: }
2868: my %roles = &get_my_roles($uname,$udom,'userroles',
2869: $typesref,undef,[$cdom]);
2870: my ($tmp) = keys(%roles);
2871: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
2872: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
2873: if (@course_roles > 0) {
2874: return 1;
2875: }
2876: return 0;
2877: }
2878:
2879: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2880: # input: action, courseID, current domain, intended
2881: # path to file, source of file, instruction to parse file for objects,
2882: # ref to hash for embedded objects,
2883: # ref to hash for codebase of java objects.
2884: # reference to scalar to accommodate mime type determined
2885: # from File::MMagic if $parser = parse.
2886: #
2887: # output: url to file (if action was uploaddoc),
2888: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2889: #
2890: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2891: # course.
2892: #
2893: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2894: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2895: # course's home server.
2896: #
2897: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2898: # be copied from $source (current location) to
2899: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2900: # and will then be copied to
2901: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2902: # course's home server.
2903: #
2904: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2905: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2906: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2907: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2908: # in course's home server.
2909: #
2910:
2911: sub process_coursefile {
2912: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2913: $mimetype)=@_;
2914: my $fetchresult;
2915: my $home=&homeserver($docuname,$docudom);
2916: if ($action eq 'propagate') {
2917: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2918: $home);
2919: } else {
2920: my $fpath = '';
2921: my $fname = $file;
2922: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2923: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2924: my $filepath = &build_filepath($fpath);
2925: if ($action eq 'copy') {
2926: if ($source eq '') {
2927: $fetchresult = 'no source file';
2928: return $fetchresult;
2929: } else {
2930: my $destination = $filepath.'/'.$fname;
2931: rename($source,$destination);
2932: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2933: $home);
2934: }
2935: } elsif ($action eq 'uploaddoc') {
2936: open(my $fh,'>'.$filepath.'/'.$fname);
2937: print $fh $env{'form.'.$source};
2938: close($fh);
2939: if ($parser eq 'parse') {
2940: my $mm = new File::MMagic;
2941: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2942: if ($type eq 'text/html') {
2943: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2944: unless ($parse_result eq 'ok') {
2945: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2946: }
2947: }
2948: if (ref($mimetype)) {
2949: $$mimetype = $type;
2950: }
2951: }
2952: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2953: $home);
2954: if ($fetchresult eq 'ok') {
2955: return '/uploaded/'.$fpath.'/'.$fname;
2956: } else {
2957: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2958: ' to host '.$home.': '.$fetchresult);
2959: return '/adm/notfound.html';
2960: }
2961: }
2962: }
2963: unless ( $fetchresult eq 'ok') {
2964: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2965: ' to host '.$home.': '.$fetchresult);
2966: }
2967: return $fetchresult;
2968: }
2969:
2970: sub build_filepath {
2971: my ($fpath) = @_;
2972: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2973: unless ($fpath eq '') {
2974: my @parts=split('/',$fpath);
2975: foreach my $part (@parts) {
2976: $filepath.= '/'.$part;
2977: if ((-e $filepath)!=1) {
2978: mkdir($filepath,0777);
2979: }
2980: }
2981: }
2982: return $filepath;
2983: }
2984:
2985: sub store_edited_file {
2986: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2987: my $file = $primary_url;
2988: $file =~ s#^/uploaded/$docudom/$docuname/##;
2989: my $fpath = '';
2990: my $fname = $file;
2991: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2992: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2993: my $filepath = &build_filepath($fpath);
2994: open(my $fh,'>'.$filepath.'/'.$fname);
2995: print $fh $content;
2996: close($fh);
2997: my $home=&homeserver($docuname,$docudom);
2998: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2999: $home);
3000: if ($$fetchresult eq 'ok') {
3001: return '/uploaded/'.$fpath.'/'.$fname;
3002: } else {
3003: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3004: ' to host '.$home.': '.$$fetchresult);
3005: return '/adm/notfound.html';
3006: }
3007: }
3008:
3009: sub clean_filename {
3010: my ($fname,$args)=@_;
3011: # Replace Windows backslashes by forward slashes
3012: $fname=~s/\\/\//g;
3013: if (!$args->{'keep_path'}) {
3014: # Get rid of everything but the actual filename
3015: $fname=~s/^.*\/([^\/]+)$/$1/;
3016: }
3017: # Replace spaces by underscores
3018: $fname=~s/\s+/\_/g;
3019: # Replace all other weird characters by nothing
3020: $fname=~s{[^/\w\.\-]}{}g;
3021: # Replace all .\d. sequences with _\d. so they no longer look like version
3022: # numbers
3023: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3024: return $fname;
3025: }
3026: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3027: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3028: # image with the same aspect ratio as the original, but with dimensions which do
3029: # not exceed $resizewidth and $resizeheight.
3030:
3031: sub resizeImage {
3032: my ($img_path,$resizewidth,$resizeheight) = @_;
3033: my $ima = Image::Magick->new;
3034: my $resized;
3035: if (-e $img_path) {
3036: $ima->Read($img_path);
3037: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3038: my $width = $ima->Get('width');
3039: my $height = $ima->Get('height');
3040: if ($width > $resizewidth) {
3041: my $factor = $width/$resizewidth;
3042: my $newheight = $height/$factor;
3043: $ima->Scale(width=>$resizewidth,height=>$newheight);
3044: $resized = 1;
3045: }
3046: }
3047: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3048: my $width = $ima->Get('width');
3049: my $height = $ima->Get('height');
3050: if ($height > $resizeheight) {
3051: my $factor = $height/$resizeheight;
3052: my $newwidth = $width/$factor;
3053: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3054: $resized = 1;
3055: }
3056: }
3057: if ($resized) {
3058: $ima->Write($img_path);
3059: }
3060: }
3061: return;
3062: }
3063:
3064: # --------------- Take an uploaded file and put it into the userfiles directory
3065: # input: $formname - the contents of the file are in $env{"form.$formname"}
3066: # the desired filename is in $env{"form.$formname.filename"}
3067: # $context - possible values: coursedoc, existingfile, overwrite,
3068: # canceloverwrite, or ''.
3069: # if 'coursedoc': upload to the current course
3070: # if 'existingfile': write file to tmp/overwrites directory
3071: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3072: # $context is passed as argument to &finishuserfileupload
3073: # $subdir - directory in userfile to store the file into
3074: # $parser - instruction to parse file for objects ($parser = parse)
3075: # $allfiles - reference to hash for embedded objects
3076: # $codebase - reference to hash for codebase of java objects
3077: # $desuname - username for permanent storage of uploaded file
3078: # $dsetudom - domain for permanaent storage of uploaded file
3079: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3080: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3081: # $resizewidth - width (pixels) to which to resize uploaded image
3082: # $resizeheight - height (pixels) to which to resize uploaded image
3083: # $mimetype - reference to scalar to accommodate mime type determined
3084: # from File::MMagic.
3085: #
3086: # output: url of file in userspace, or error: <message>
3087: # or /adm/notfound.html if failure to upload occurse
3088:
3089: sub userfileupload {
3090: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3091: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3092: if (!defined($subdir)) { $subdir='unknown'; }
3093: my $fname=$env{'form.'.$formname.'.filename'};
3094: $fname=&clean_filename($fname);
3095: # See if there is anything left
3096: unless ($fname) { return 'error: no uploaded file'; }
3097: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3098: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3099: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3100: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3101: my $now = time;
3102: my $filepath;
3103: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3104: $filepath = 'tmp/helprequests/'.$now;
3105: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3106: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3107: '_'.$env{'user.domain'}.'/pending';
3108: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3109: my ($docuname,$docudom);
3110: if ($destudom) {
3111: $docudom = $destudom;
3112: } else {
3113: $docudom = $env{'user.domain'};
3114: }
3115: if ($destuname) {
3116: $docuname = $destuname;
3117: } else {
3118: $docuname = $env{'user.name'};
3119: }
3120: if (exists($env{'form.group'})) {
3121: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3122: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3123: }
3124: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3125: if ($context eq 'canceloverwrite') {
3126: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3127: if (-e $tempfile) {
3128: my @info = stat($tempfile);
3129: if ($info[9] eq $env{'form.timestamp'}) {
3130: unlink($tempfile);
3131: }
3132: }
3133: return;
3134: }
3135: }
3136: # Create the directory if not present
3137: my @parts=split(/\//,$filepath);
3138: my $fullpath = $perlvar{'lonDaemons'};
3139: for (my $i=0;$i<@parts;$i++) {
3140: $fullpath .= '/'.$parts[$i];
3141: if ((-e $fullpath)!=1) {
3142: mkdir($fullpath,0777);
3143: }
3144: }
3145: open(my $fh,'>'.$fullpath.'/'.$fname);
3146: print $fh $env{'form.'.$formname};
3147: close($fh);
3148: if ($context eq 'existingfile') {
3149: my @info = stat($fullpath.'/'.$fname);
3150: return ($fullpath.'/'.$fname,$info[9]);
3151: } else {
3152: return $fullpath.'/'.$fname;
3153: }
3154: }
3155: if ($subdir eq 'scantron') {
3156: $fname = 'scantron_orig_'.$fname;
3157: } else {
3158: $fname="$subdir/$fname";
3159: }
3160: if ($context eq 'coursedoc') {
3161: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3162: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3163: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3164: return &finishuserfileupload($docuname,$docudom,
3165: $formname,$fname,$parser,$allfiles,
3166: $codebase,$thumbwidth,$thumbheight,
3167: $resizewidth,$resizeheight,$context,$mimetype);
3168: } else {
3169: $fname=$env{'form.folder'}.'/'.$fname;
3170: return &process_coursefile('uploaddoc',$docuname,$docudom,
3171: $fname,$formname,$parser,
3172: $allfiles,$codebase,$mimetype);
3173: }
3174: } elsif (defined($destuname)) {
3175: my $docuname=$destuname;
3176: my $docudom=$destudom;
3177: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3178: $parser,$allfiles,$codebase,
3179: $thumbwidth,$thumbheight,
3180: $resizewidth,$resizeheight,$context,$mimetype);
3181: } else {
3182: my $docuname=$env{'user.name'};
3183: my $docudom=$env{'user.domain'};
3184: if (exists($env{'form.group'})) {
3185: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3186: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3187: }
3188: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3189: $parser,$allfiles,$codebase,
3190: $thumbwidth,$thumbheight,
3191: $resizewidth,$resizeheight,$context,$mimetype);
3192: }
3193: }
3194:
3195: sub finishuserfileupload {
3196: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3197: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3198: my $path=$docudom.'/'.$docuname.'/';
3199: my $filepath=$perlvar{'lonDocRoot'};
3200:
3201: my ($fnamepath,$file,$fetchthumb);
3202: $file=$fname;
3203: if ($fname=~m|/|) {
3204: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3205: $path.=$fnamepath.'/';
3206: }
3207: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3208: my $count;
3209: for ($count=4;$count<=$#parts;$count++) {
3210: $filepath.="/$parts[$count]";
3211: if ((-e $filepath)!=1) {
3212: mkdir($filepath,0777);
3213: }
3214: }
3215:
3216: # Save the file
3217: {
3218: if (!open(FH,'>'.$filepath.'/'.$file)) {
3219: &logthis('Failed to create '.$filepath.'/'.$file);
3220: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3221: return '/adm/notfound.html';
3222: }
3223: if ($context eq 'overwrite') {
3224: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3225: my $target = $filepath.'/'.$file;
3226: if (-e $source) {
3227: my @info = stat($source);
3228: if ($info[9] eq $env{'form.timestamp'}) {
3229: unless (&File::Copy::move($source,$target)) {
3230: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3231: return "Moving from $source failed";
3232: }
3233: } else {
3234: return "Temporary file: $source had unexpected date/time for last modification";
3235: }
3236: } else {
3237: return "Temporary file: $source missing";
3238: }
3239: } elsif (!print FH ($env{'form.'.$formname})) {
3240: &logthis('Failed to write to '.$filepath.'/'.$file);
3241: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3242: return '/adm/notfound.html';
3243: }
3244: close(FH);
3245: if ($resizewidth && $resizeheight) {
3246: my $mm = new File::MMagic;
3247: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3248: if ($mime_type =~ m{^image/}) {
3249: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3250: }
3251: }
3252: }
3253: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3254: if (ref($mimetype)) {
3255: if ($$mimetype eq '') {
3256: my $mm = new File::MMagic;
3257: my $type = $mm->checktype_filename($filepath.'/'.$file);
3258: $$mimetype = $type;
3259: }
3260: }
3261: }
3262: if ($parser eq 'parse') {
3263: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3264: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3265: $allfiles,$codebase);
3266: unless ($parse_result eq 'ok') {
3267: &logthis('Failed to parse '.$filepath.$file.
3268: ' for embedded media: '.$parse_result);
3269: }
3270: }
3271: }
3272: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3273: my $input = $filepath.'/'.$file;
3274: my $output = $filepath.'/'.'tn-'.$file;
3275: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3276: system("convert -sample $thumbsize $input $output");
3277: if (-e $filepath.'/'.'tn-'.$file) {
3278: $fetchthumb = 1;
3279: }
3280: }
3281:
3282: # Notify homeserver to grep it
3283: #
3284: my $docuhome=&homeserver($docuname,$docudom);
3285: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3286: if ($fetchresult eq 'ok') {
3287: if ($fetchthumb) {
3288: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3289: if ($thumbresult ne 'ok') {
3290: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3291: $docuhome.': '.$thumbresult);
3292: }
3293: }
3294: #
3295: # Return the URL to it
3296: return '/uploaded/'.$path.$file;
3297: } else {
3298: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3299: ': '.$fetchresult);
3300: return '/adm/notfound.html';
3301: }
3302: }
3303:
3304: sub extract_embedded_items {
3305: my ($fullpath,$allfiles,$codebase,$content) = @_;
3306: my @state = ();
3307: my (%lastids,%related,%shockwave,%flashvars);
3308: my %javafiles = (
3309: codebase => '',
3310: code => '',
3311: archive => ''
3312: );
3313: my %mediafiles = (
3314: src => '',
3315: movie => '',
3316: );
3317: my $p;
3318: if ($content) {
3319: $p = HTML::LCParser->new($content);
3320: } else {
3321: $p = HTML::LCParser->new($fullpath);
3322: }
3323: while (my $t=$p->get_token()) {
3324: if ($t->[0] eq 'S') {
3325: my ($tagname, $attr) = ($t->[1],$t->[2]);
3326: push(@state, $tagname);
3327: if (lc($tagname) eq 'allow') {
3328: &add_filetype($allfiles,$attr->{'src'},'src');
3329: }
3330: if (lc($tagname) eq 'img') {
3331: &add_filetype($allfiles,$attr->{'src'},'src');
3332: }
3333: if (lc($tagname) eq 'a') {
3334: &add_filetype($allfiles,$attr->{'href'},'href');
3335: }
3336: if (lc($tagname) eq 'script') {
3337: my $src;
3338: if ($attr->{'archive'} =~ /\.jar$/i) {
3339: &add_filetype($allfiles,$attr->{'archive'},'archive');
3340: } else {
3341: if ($attr->{'src'} ne '') {
3342: $src = $attr->{'src'};
3343: &add_filetype($allfiles,$src,'src');
3344: }
3345: }
3346: my $text = $p->get_trimmed_text();
3347: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3348: my @swfargs = split(/,/,$1);
3349: foreach my $item (@swfargs) {
3350: $item =~ s/["']//g;
3351: $item =~ s/^\s+//;
3352: $item =~ s/\s+$//;
3353: }
3354: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3355: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3356: push(@{$related{$swfargs[0]}},$swfargs[2]);
3357: } else {
3358: $related{$swfargs[0]} = [$swfargs[2]];
3359: }
3360: }
3361: }
3362: }
3363: if (lc($tagname) eq 'link') {
3364: if (lc($attr->{'rel'}) eq 'stylesheet') {
3365: &add_filetype($allfiles,$attr->{'href'},'href');
3366: }
3367: }
3368: if (lc($tagname) eq 'object' ||
3369: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3370: foreach my $item (keys(%javafiles)) {
3371: $javafiles{$item} = '';
3372: }
3373: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3374: $lastids{lc($tagname)} = $attr->{'id'};
3375: }
3376: }
3377: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3378: my $name = lc($attr->{'name'});
3379: foreach my $item (keys(%javafiles)) {
3380: if ($name eq $item) {
3381: $javafiles{$item} = $attr->{'value'};
3382: last;
3383: }
3384: }
3385: my $pathfrom;
3386: foreach my $item (keys(%mediafiles)) {
3387: if ($name eq $item) {
3388: $pathfrom = $attr->{'value'};
3389: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3390: &add_filetype($allfiles,$pathfrom,$name);
3391: last;
3392: }
3393: }
3394: if ($name eq 'flashvars') {
3395: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3396: }
3397: if ($pathfrom ne '') {
3398: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3399: $pathfrom);
3400: }
3401: }
3402: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3403: foreach my $item (keys(%javafiles)) {
3404: if ($attr->{$item}) {
3405: $javafiles{$item} = $attr->{$item};
3406: last;
3407: }
3408: }
3409: foreach my $item (keys(%mediafiles)) {
3410: if ($attr->{$item}) {
3411: &add_filetype($allfiles,$attr->{$item},$item);
3412: last;
3413: }
3414: }
3415: if (lc($tagname) eq 'embed') {
3416: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3417: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3418: $attr->{'src'});
3419: }
3420: }
3421: }
3422: if ($t->[4] =~ m{/>$}) {
3423: pop(@state);
3424: }
3425: } elsif ($t->[0] eq 'E') {
3426: my ($tagname) = ($t->[1]);
3427: if ($javafiles{'codebase'} ne '') {
3428: $javafiles{'codebase'} .= '/';
3429: }
3430: if (lc($tagname) eq 'applet' ||
3431: lc($tagname) eq 'object' ||
3432: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3433: ) {
3434: foreach my $item (keys(%javafiles)) {
3435: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3436: my $file=$javafiles{'codebase'}.$javafiles{$item};
3437: &add_filetype($allfiles,$file,$item);
3438: }
3439: }
3440: }
3441: pop @state;
3442: }
3443: }
3444: foreach my $id (sort(keys(%flashvars))) {
3445: if ($shockwave{$id} ne '') {
3446: my @pairs = split(/\&/,$flashvars{$id});
3447: foreach my $pair (@pairs) {
3448: my ($key,$value) = split(/\=/,$pair);
3449: if ($key eq 'thumb') {
3450: &add_filetype($allfiles,$value,$key);
3451: } elsif ($key eq 'content') {
3452: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3453: my ($ext) = ($value =~ /\.([^.]+)$/);
3454: if ($ext ne '') {
3455: &add_filetype($allfiles,$path.$value,$ext);
3456: }
3457: }
3458: }
3459: }
3460: }
3461: return 'ok';
3462: }
3463:
3464: sub add_filetype {
3465: my ($allfiles,$file,$type)=@_;
3466: if (exists($allfiles->{$file})) {
3467: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3468: push(@{$allfiles->{$file}}, &escape($type));
3469: }
3470: } else {
3471: @{$allfiles->{$file}} = (&escape($type));
3472: }
3473: }
3474:
3475: sub embedded_dependency {
3476: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3477: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3478: if (($identifier ne '') &&
3479: (ref($related->{$identifier}) eq 'ARRAY') &&
3480: ($pathfrom ne '')) {
3481: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3482: foreach my $dep (@{$related->{$identifier}}) {
3483: &add_filetype($allfiles,$path.$dep,'object');
3484: }
3485: }
3486: }
3487: return;
3488: }
3489:
3490: sub removeuploadedurl {
3491: my ($url)=@_;
3492: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3493: return &removeuserfile($uname,$udom,$fname);
3494: }
3495:
3496: sub removeuserfile {
3497: my ($docuname,$docudom,$fname)=@_;
3498: my $home=&homeserver($docuname,$docudom);
3499: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3500: if ($result eq 'ok') {
3501: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3502: my $metafile = $fname.'.meta';
3503: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3504: my $url = "/uploaded/$docudom/$docuname/$fname";
3505: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3506: my $sqlresult =
3507: &update_portfolio_table($docuname,$docudom,$file,
3508: 'portfolio_metadata',$group,
3509: 'delete');
3510: }
3511: }
3512: return $result;
3513: }
3514:
3515: sub mkdiruserfile {
3516: my ($docuname,$docudom,$dir)=@_;
3517: my $home=&homeserver($docuname,$docudom);
3518: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3519: }
3520:
3521: sub renameuserfile {
3522: my ($docuname,$docudom,$old,$new)=@_;
3523: my $home=&homeserver($docuname,$docudom);
3524: my $result = &reply("renameuserfile:$docudom:$docuname:".
3525: &escape("$old").':'.&escape("$new"),$home);
3526: if ($result eq 'ok') {
3527: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3528: my $oldmeta = $old.'.meta';
3529: my $newmeta = $new.'.meta';
3530: my $metaresult =
3531: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3532: my $url = "/uploaded/$docudom/$docuname/$old";
3533: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3534: my $sqlresult =
3535: &update_portfolio_table($docuname,$docudom,$file,
3536: 'portfolio_metadata',$group,
3537: 'delete');
3538: }
3539: }
3540: return $result;
3541: }
3542:
3543: # ------------------------------------------------------------------------- Log
3544:
3545: sub log {
3546: my ($dom,$nam,$hom,$what)=@_;
3547: return critical("log:$dom:$nam:$what",$hom);
3548: }
3549:
3550: # ------------------------------------------------------------------ Course Log
3551: #
3552: # This routine flushes several buffers of non-mission-critical nature
3553: #
3554:
3555: sub flushcourselogs {
3556: &logthis('Flushing log buffers');
3557: #
3558: # course logs
3559: # This is a log of all transactions in a course, which can be used
3560: # for data mining purposes
3561: #
3562: # It also collects the courseid database, which lists last transaction
3563: # times and course titles for all courseids
3564: #
3565: my %courseidbuffer=();
3566: foreach my $crsid (keys(%courselogs)) {
3567: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3568: &escape($courselogs{$crsid}),
3569: $coursehombuf{$crsid}) eq 'ok') {
3570: delete $courselogs{$crsid};
3571: } else {
3572: &logthis('Failed to flush log buffer for '.$crsid);
3573: if (length($courselogs{$crsid})>40000) {
3574: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3575: " exceeded maximum size, deleting.</font>");
3576: delete $courselogs{$crsid};
3577: }
3578: }
3579: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3580: 'description' => $coursedescrbuf{$crsid},
3581: 'inst_code' => $courseinstcodebuf{$crsid},
3582: 'type' => $coursetypebuf{$crsid},
3583: 'owner' => $courseownerbuf{$crsid},
3584: };
3585: }
3586: #
3587: # Write course id database (reverse lookup) to homeserver of courses
3588: # Is used in pickcourse
3589: #
3590: foreach my $crs_home (keys(%courseidbuffer)) {
3591: my $response = &courseidput(&host_domain($crs_home),
3592: $courseidbuffer{$crs_home},
3593: $crs_home,'timeonly');
3594: }
3595: #
3596: # File accesses
3597: # Writes to the dynamic metadata of resources to get hit counts, etc.
3598: #
3599: foreach my $entry (keys(%accesshash)) {
3600: if ($entry =~ /___count$/) {
3601: my ($dom,$name);
3602: ($dom,$name,undef)=
3603: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3604: if (! defined($dom) || $dom eq '' ||
3605: ! defined($name) || $name eq '') {
3606: my $cid = $env{'request.course.id'};
3607: $dom = $env{'request.'.$cid.'.domain'};
3608: $name = $env{'request.'.$cid.'.num'};
3609: }
3610: my $value = $accesshash{$entry};
3611: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3612: my %temphash=($url => $value);
3613: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3614: if ($result eq 'ok') {
3615: delete $accesshash{$entry};
3616: }
3617: } else {
3618: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3619: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3620: my %temphash=($entry => $accesshash{$entry});
3621: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3622: delete $accesshash{$entry};
3623: }
3624: }
3625: }
3626: #
3627: # Roles
3628: # Reverse lookup of user roles for course faculty/staff and co-authorship
3629: #
3630: foreach my $entry (keys(%userrolehash)) {
3631: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3632: split(/\:/,$entry);
3633: if (&Apache::lonnet::put('nohist_userroles',
3634: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3635: $rudom,$runame) eq 'ok') {
3636: delete $userrolehash{$entry};
3637: }
3638: }
3639: #
3640: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3641: #
3642: my %domrolebuffer = ();
3643: foreach my $entry (keys(%domainrolehash)) {
3644: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3645: if ($domrolebuffer{$rudom}) {
3646: $domrolebuffer{$rudom}.='&'.&escape($entry).
3647: '='.&escape($domainrolehash{$entry});
3648: } else {
3649: $domrolebuffer{$rudom}.=&escape($entry).
3650: '='.&escape($domainrolehash{$entry});
3651: }
3652: delete $domainrolehash{$entry};
3653: }
3654: foreach my $dom (keys(%domrolebuffer)) {
3655: my %servers = &get_servers($dom,'library');
3656: foreach my $tryserver (keys(%servers)) {
3657: unless (&reply('domroleput:'.$dom.':'.
3658: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3659: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3660: }
3661: }
3662: }
3663: $dumpcount++;
3664: }
3665:
3666: sub courselog {
3667: my $what=shift;
3668: $what=time.':'.$what;
3669: unless ($env{'request.course.id'}) { return ''; }
3670: $coursedombuf{$env{'request.course.id'}}=
3671: $env{'course.'.$env{'request.course.id'}.'.domain'};
3672: $coursenumbuf{$env{'request.course.id'}}=
3673: $env{'course.'.$env{'request.course.id'}.'.num'};
3674: $coursehombuf{$env{'request.course.id'}}=
3675: $env{'course.'.$env{'request.course.id'}.'.home'};
3676: $coursedescrbuf{$env{'request.course.id'}}=
3677: $env{'course.'.$env{'request.course.id'}.'.description'};
3678: $courseinstcodebuf{$env{'request.course.id'}}=
3679: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3680: $courseownerbuf{$env{'request.course.id'}}=
3681: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3682: $coursetypebuf{$env{'request.course.id'}}=
3683: $env{'course.'.$env{'request.course.id'}.'.type'};
3684: if (defined $courselogs{$env{'request.course.id'}}) {
3685: $courselogs{$env{'request.course.id'}}.='&'.$what;
3686: } else {
3687: $courselogs{$env{'request.course.id'}}.=$what;
3688: }
3689: if (length($courselogs{$env{'request.course.id'}})>4048) {
3690: &flushcourselogs();
3691: }
3692: }
3693:
3694: sub courseacclog {
3695: my $fnsymb=shift;
3696: unless ($env{'request.course.id'}) { return ''; }
3697: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3698: if ($fnsymb=~/$LONCAPA::assess_re/) {
3699: $what.=':POST';
3700: # FIXME: Probably ought to escape things....
3701: foreach my $key (keys(%env)) {
3702: if ($key=~/^form\.(.*)/) {
3703: my $formitem = $1;
3704: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3705: $what.=':'.$formitem.'='.$env{$key};
3706: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3707: $what.=':'.$formitem.'='.$env{$key};
3708: }
3709: }
3710: }
3711: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3712: # FIXME: We should not be depending on a form parameter that someone
3713: # editing lonsearchcat.pm might change in the future.
3714: if ($env{'form.phase'} eq 'course_search') {
3715: $what.= ':POST';
3716: # FIXME: Probably ought to escape things....
3717: foreach my $element ('courseexp','crsfulltext','crsrelated',
3718: 'crsdiscuss') {
3719: $what.=':'.$element.'='.$env{'form.'.$element};
3720: }
3721: }
3722: }
3723: &courselog($what);
3724: }
3725:
3726: sub countacc {
3727: my $url=&declutter(shift);
3728: return if (! defined($url) || $url eq '');
3729: unless ($env{'request.course.id'}) { return ''; }
3730: #
3731: # Mark that this url was used in this course
3732: #
3733: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3734: #
3735: # Increase the access count for this resource in this child process
3736: #
3737: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3738: $accesshash{$key}++;
3739: }
3740:
3741: sub linklog {
3742: my ($from,$to)=@_;
3743: $from=&declutter($from);
3744: $to=&declutter($to);
3745: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3746: $accesshash{$to.'___'.$from.'___goto'}=1;
3747: }
3748:
3749: sub statslog {
3750: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3751: if ($users<2) { return; }
3752: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3753: 'course' => $env{'request.course.id'},
3754: 'sections' => '"all"',
3755: 'num_students' => $users,
3756: 'part' => $part,
3757: 'symb' => $symb,
3758: 'mean_tries' => $av_attempts,
3759: 'deg_of_diff' => $degdiff});
3760: foreach my $key (keys(%dynstore)) {
3761: $accesshash{$key}=$dynstore{$key};
3762: }
3763: }
3764:
3765: sub userrolelog {
3766: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3767: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3768: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3769: $userrolehash
3770: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3771: =$tend.':'.$tstart;
3772: }
3773: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3774: $userrolehash
3775: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3776: =$tend.':'.$tstart;
3777: }
3778: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3779: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3780: $domainrolehash
3781: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3782: = $tend.':'.$tstart;
3783: }
3784: }
3785:
3786: sub courserolelog {
3787: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3788: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3789: my $cdom = $1;
3790: my $cnum = $2;
3791: my $sec = $3;
3792: my $namespace = 'rolelog';
3793: my %storehash = (
3794: role => $trole,
3795: start => $tstart,
3796: end => $tend,
3797: selfenroll => $selfenroll,
3798: context => $context,
3799: );
3800: if ($trole eq 'gr') {
3801: $namespace = 'groupslog';
3802: $storehash{'group'} = $sec;
3803: } else {
3804: $storehash{'section'} = $sec;
3805: }
3806: &write_log('course',$namespace,\%storehash,$delflag,$username,
3807: $domain,$cnum,$cdom);
3808: if (($trole ne 'st') || ($sec ne '')) {
3809: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3810: }
3811: }
3812: return;
3813: }
3814:
3815: sub domainrolelog {
3816: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3817: if ($area =~ m{^/($match_domain)/$}) {
3818: my $cdom = $1;
3819: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
3820: my $namespace = 'rolelog';
3821: my %storehash = (
3822: role => $trole,
3823: start => $tstart,
3824: end => $tend,
3825: context => $context,
3826: );
3827: &write_log('domain',$namespace,\%storehash,$delflag,$username,
3828: $domain,$domconfiguser,$cdom);
3829: }
3830: return;
3831:
3832: }
3833:
3834: sub coauthorrolelog {
3835: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
3836: if ($area =~ m{^/($match_domain)/($match_username)$}) {
3837: my $audom = $1;
3838: my $auname = $2;
3839: my $namespace = 'rolelog';
3840: my %storehash = (
3841: role => $trole,
3842: start => $tstart,
3843: end => $tend,
3844: context => $context,
3845: );
3846: &write_log('author',$namespace,\%storehash,$delflag,$username,
3847: $domain,$auname,$audom);
3848: }
3849: return;
3850: }
3851:
3852: sub get_course_adv_roles {
3853: my ($cid,$codes) = @_;
3854: $cid=$env{'request.course.id'} unless (defined($cid));
3855: my %coursehash=&coursedescription($cid);
3856: my $crstype = &Apache::loncommon::course_type($cid);
3857: my %nothide=();
3858: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3859: if ($user !~ /:/) {
3860: $nothide{join(':',split(/[\@]/,$user))}=1;
3861: } else {
3862: $nothide{$user}=1;
3863: }
3864: }
3865: my %returnhash=();
3866: my %dumphash=
3867: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3868: my $now=time;
3869: my %privileged;
3870: foreach my $entry (keys(%dumphash)) {
3871: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3872: if (($tstart) && ($tstart<0)) { next; }
3873: if (($tend) && ($tend<$now)) { next; }
3874: if (($tstart) && ($now<$tstart)) { next; }
3875: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3876: if ($username eq '' || $domain eq '') { next; }
3877: unless (ref($privileged{$domain}) eq 'HASH') {
3878: my %dompersonnel =
3879: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3880: $privileged{$domain} = {};
3881: foreach my $server (keys(%dompersonnel)) {
3882: if (ref($dompersonnel{$server}) eq 'HASH') {
3883: foreach my $user (keys(%{$dompersonnel{$server}})) {
3884: my ($trole,$uname,$udom) = split(/:/,$user);
3885: $privileged{$udom}{$uname} = 1;
3886: }
3887: }
3888: }
3889: }
3890: if ((exists($privileged{$domain}{$username})) &&
3891: (!$nothide{$username.':'.$domain})) { next; }
3892: if ($role eq 'cr') { next; }
3893: if ($codes) {
3894: if ($section) { $role .= ':'.$section; }
3895: if ($returnhash{$role}) {
3896: $returnhash{$role}.=','.$username.':'.$domain;
3897: } else {
3898: $returnhash{$role}=$username.':'.$domain;
3899: }
3900: } else {
3901: my $key=&plaintext($role,$crstype);
3902: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3903: if ($returnhash{$key}) {
3904: $returnhash{$key}.=','.$username.':'.$domain;
3905: } else {
3906: $returnhash{$key}=$username.':'.$domain;
3907: }
3908: }
3909: }
3910: return %returnhash;
3911: }
3912:
3913: sub get_my_roles {
3914: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3915: unless (defined($uname)) { $uname=$env{'user.name'}; }
3916: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3917: my (%dumphash,%nothide);
3918: if ($context eq 'userroles') {
3919: %dumphash = &dump('roles',$udom,$uname);
3920: } else {
3921: %dumphash=
3922: &dump('nohist_userroles',$udom,$uname);
3923: if ($hidepriv) {
3924: my %coursehash=&coursedescription($udom.'_'.$uname);
3925: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3926: if ($user !~ /:/) {
3927: $nothide{join(':',split(/[\@]/,$user))} = 1;
3928: } else {
3929: $nothide{$user} = 1;
3930: }
3931: }
3932: }
3933: }
3934: my %returnhash=();
3935: my $now=time;
3936: my %privileged;
3937: foreach my $entry (keys(%dumphash)) {
3938: my ($role,$tend,$tstart);
3939: if ($context eq 'userroles') {
3940: next if ($entry =~ /^rolesdef/);
3941: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3942: } else {
3943: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3944: }
3945: if (($tstart) && ($tstart<0)) { next; }
3946: my $status = 'active';
3947: if (($tend) && ($tend<=$now)) {
3948: $status = 'previous';
3949: }
3950: if (($tstart) && ($now<$tstart)) {
3951: $status = 'future';
3952: }
3953: if (ref($types) eq 'ARRAY') {
3954: if (!grep(/^\Q$status\E$/,@{$types})) {
3955: next;
3956: }
3957: } else {
3958: if ($status ne 'active') {
3959: next;
3960: }
3961: }
3962: my ($rolecode,$username,$domain,$section,$area);
3963: if ($context eq 'userroles') {
3964: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
3965: (undef,$domain,$username,$section) = split(/\//,$area);
3966: } else {
3967: ($role,$username,$domain,$section) = split(/\:/,$entry);
3968: }
3969: if (ref($roledoms) eq 'ARRAY') {
3970: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3971: next;
3972: }
3973: }
3974: if (ref($roles) eq 'ARRAY') {
3975: if (!grep(/^\Q$role\E$/,@{$roles})) {
3976: if ($role =~ /^cr\//) {
3977: if (!grep(/^cr$/,@{$roles})) {
3978: next;
3979: }
3980: } elsif ($role =~ /^gr\//) {
3981: if (!grep(/^gr$/,@{$roles})) {
3982: next;
3983: }
3984: } else {
3985: next;
3986: }
3987: }
3988: }
3989: if ($hidepriv) {
3990: if ($context eq 'userroles') {
3991: if ((&privileged($username,$domain)) &&
3992: (!$nothide{$username.':'.$domain})) {
3993: next;
3994: }
3995: } else {
3996: unless (ref($privileged{$domain}) eq 'HASH') {
3997: my %dompersonnel =
3998: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3999: $privileged{$domain} = {};
4000: if (keys(%dompersonnel)) {
4001: foreach my $server (keys(%dompersonnel)) {
4002: if (ref($dompersonnel{$server}) eq 'HASH') {
4003: foreach my $user (keys(%{$dompersonnel{$server}})) {
4004: my ($trole,$uname,$udom) = split(/:/,$user);
4005: $privileged{$udom}{$uname} = $trole;
4006: }
4007: }
4008: }
4009: }
4010: }
4011: if (exists($privileged{$domain}{$username})) {
4012: if (!$nothide{$username.':'.$domain}) {
4013: next;
4014: }
4015: }
4016: }
4017: }
4018: if ($withsec) {
4019: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4020: $tstart.':'.$tend;
4021: } else {
4022: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4023: }
4024: }
4025: return %returnhash;
4026: }
4027:
4028: # ----------------------------------------------------- Frontpage Announcements
4029: #
4030: #
4031:
4032: sub postannounce {
4033: my ($server,$text)=@_;
4034: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4035: unless ($text=~/\w/) { $text=''; }
4036: return &reply('setannounce:'.&escape($text),$server);
4037: }
4038:
4039: sub getannounce {
4040:
4041: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4042: my $announcement='';
4043: while (my $line = <$fh>) { $announcement .= $line; }
4044: close($fh);
4045: if ($announcement=~/\w/) {
4046: return
4047: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4048: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4049: } else {
4050: return '';
4051: }
4052: } else {
4053: return '';
4054: }
4055: }
4056:
4057: # ---------------------------------------------------------- Course ID routines
4058: # Deal with domain's nohist_courseid.db files
4059: #
4060:
4061: sub courseidput {
4062: my ($domain,$storehash,$coursehome,$caller) = @_;
4063: return unless (ref($storehash) eq 'HASH');
4064: my $outcome;
4065: if ($caller eq 'timeonly') {
4066: my $cids = '';
4067: foreach my $item (keys(%$storehash)) {
4068: $cids.=&escape($item).'&';
4069: }
4070: $cids=~s/\&$//;
4071: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4072: $coursehome);
4073: } else {
4074: my $items = '';
4075: foreach my $item (keys(%$storehash)) {
4076: $items.= &escape($item).'='.
4077: &freeze_escape($$storehash{$item}).'&';
4078: }
4079: $items=~s/\&$//;
4080: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4081: $coursehome);
4082: }
4083: if ($outcome eq 'unknown_cmd') {
4084: my $what;
4085: foreach my $cid (keys(%$storehash)) {
4086: $what .= &escape($cid).'=';
4087: foreach my $item ('description','inst_code','owner','type') {
4088: $what .= &escape($storehash->{$cid}{$item}).':';
4089: }
4090: $what =~ s/\:$/&/;
4091: }
4092: $what =~ s/\&$//;
4093: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4094: } else {
4095: return $outcome;
4096: }
4097: }
4098:
4099: sub courseiddump {
4100: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4101: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4102: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4103: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
4104: my $as_hash = 1;
4105: my %returnhash;
4106: if (!$domfilter) { $domfilter=''; }
4107: my %libserv = &all_library();
4108: foreach my $tryserver (keys(%libserv)) {
4109: if ( ( $hostidflag == 1
4110: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4111: || (!defined($hostidflag)) ) {
4112:
4113: if (($domfilter eq '') ||
4114: (&host_domain($tryserver) eq $domfilter)) {
4115: my $rep;
4116: if (grep { $_ eq $tryserver } current_machine_ids()) {
4117: $rep = LONCAPA::Lond::dump_course_id_handler(
4118: join(":", (&host_domain($tryserver), $sincefilter,
4119: &escape($descfilter), &escape($instcodefilter),
4120: &escape($ownerfilter), &escape($coursefilter),
4121: &escape($typefilter), &escape($regexp_ok),
4122: $as_hash, &escape($selfenrollonly),
4123: &escape($catfilter), $showhidden, $caller,
4124: &escape($cloner), &escape($cc_clone), $cloneonly,
4125: &escape($createdbefore), &escape($createdafter),
4126: &escape($creationcontext), $domcloner)));
4127: } else {
4128: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4129: $sincefilter.':'.&escape($descfilter).':'.
4130: &escape($instcodefilter).':'.&escape($ownerfilter).
4131: ':'.&escape($coursefilter).':'.&escape($typefilter).
4132: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4133: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4134: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4135: &escape($cc_clone).':'.$cloneonly.':'.
4136: &escape($createdbefore).':'.&escape($createdafter).':'.
4137: &escape($creationcontext).':'.$domcloner,
4138: $tryserver);
4139: }
4140:
4141: my @pairs=split(/\&/,$rep);
4142: foreach my $item (@pairs) {
4143: my ($key,$value)=split(/\=/,$item,2);
4144: $key = &unescape($key);
4145: next if ($key =~ /^error: 2 /);
4146: my $result = &thaw_unescape($value);
4147: if (ref($result) eq 'HASH') {
4148: $returnhash{$key}=$result;
4149: } else {
4150: my @responses = split(/:/,$value);
4151: my @items = ('description','inst_code','owner','type');
4152: for (my $i=0; $i<@responses; $i++) {
4153: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4154: }
4155: }
4156: }
4157: }
4158: }
4159: }
4160: return %returnhash;
4161: }
4162:
4163: sub courselastaccess {
4164: my ($cdom,$cnum,$hostidref) = @_;
4165: my %returnhash;
4166: if ($cdom && $cnum) {
4167: my $chome = &homeserver($cnum,$cdom);
4168: if ($chome ne 'no_host') {
4169: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4170: &extract_lastaccess(\%returnhash,$rep);
4171: }
4172: } else {
4173: if (!$cdom) { $cdom=''; }
4174: my %libserv = &all_library();
4175: foreach my $tryserver (keys(%libserv)) {
4176: if (ref($hostidref) eq 'ARRAY') {
4177: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4178: }
4179: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4180: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4181: &extract_lastaccess(\%returnhash,$rep);
4182: }
4183: }
4184: }
4185: return %returnhash;
4186: }
4187:
4188: sub extract_lastaccess {
4189: my ($returnhash,$rep) = @_;
4190: if (ref($returnhash) eq 'HASH') {
4191: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4192: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4193: $rep eq '') {
4194: my @pairs=split(/\&/,$rep);
4195: foreach my $item (@pairs) {
4196: my ($key,$value)=split(/\=/,$item,2);
4197: $key = &unescape($key);
4198: next if ($key =~ /^error: 2 /);
4199: $returnhash->{$key} = &thaw_unescape($value);
4200: }
4201: }
4202: }
4203: return;
4204: }
4205:
4206: # ---------------------------------------------------------- DC e-mail
4207:
4208: sub dcmailput {
4209: my ($domain,$msgid,$message,$server)=@_;
4210: my $status = &Apache::lonnet::critical(
4211: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4212: &escape($message),$server);
4213: return $status;
4214: }
4215:
4216: sub dcmaildump {
4217: my ($dom,$startdate,$enddate,$senders) = @_;
4218: my %returnhash=();
4219:
4220: if (defined(&domain($dom,'primary'))) {
4221: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4222: &escape($enddate).':';
4223: my @esc_senders=map { &escape($_)} @$senders;
4224: $cmd.=&escape(join('&',@esc_senders));
4225: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4226: my ($key,$value) = split(/\=/,$line,2);
4227: if (($key) && ($value)) {
4228: $returnhash{&unescape($key)} = &unescape($value);
4229: }
4230: }
4231: }
4232: return %returnhash;
4233: }
4234: # ---------------------------------------------------------- Domain roles
4235:
4236: sub get_domain_roles {
4237: my ($dom,$roles,$startdate,$enddate)=@_;
4238: if ((!defined($startdate)) || ($startdate eq '')) {
4239: $startdate = '.';
4240: }
4241: if ((!defined($enddate)) || ($enddate eq '')) {
4242: $enddate = '.';
4243: }
4244: my $rolelist;
4245: if (ref($roles) eq 'ARRAY') {
4246: $rolelist = join(':',@{$roles});
4247: }
4248: my %personnel = ();
4249:
4250: my %servers = &get_servers($dom,'library');
4251: foreach my $tryserver (keys(%servers)) {
4252: %{$personnel{$tryserver}}=();
4253: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4254: &escape($startdate).':'.
4255: &escape($enddate).':'.
4256: &escape($rolelist), $tryserver))) {
4257: my ($key,$value) = split(/\=/,$line,2);
4258: if (($key) && ($value)) {
4259: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4260: }
4261: }
4262: }
4263: return %personnel;
4264: }
4265:
4266: # ----------------------------------------------------------- Interval timing
4267:
4268: {
4269: # Caches needed for speedup of navmaps
4270: # We don't want to cache this for very long at all (5 seconds at most)
4271: #
4272: # The user for whom we cache
4273: my $cachedkey='';
4274: # The cached times for this user
4275: my %cachedtimes=();
4276: # When this was last done
4277: my $cachedtime=();
4278:
4279: sub load_all_first_access {
4280: my ($uname,$udom)=@_;
4281: if (($cachedkey eq $uname.':'.$udom) &&
4282: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4283: return;
4284: }
4285: $cachedtime=time;
4286: $cachedkey=$uname.':'.$udom;
4287: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4288: }
4289:
4290: sub get_first_access {
4291: my ($type,$argsymb,$argmap)=@_;
4292: my ($symb,$courseid,$udom,$uname)=&whichuser();
4293: if ($argsymb) { $symb=$argsymb; }
4294: my ($map,$id,$res)=&decode_symb($symb);
4295: if ($argmap) { $map = $argmap; }
4296: if ($type eq 'course') {
4297: $res='course';
4298: } elsif ($type eq 'map') {
4299: $res=&symbread($map);
4300: } else {
4301: $res=$symb;
4302: }
4303: &load_all_first_access($uname,$udom);
4304: return $cachedtimes{"$courseid\0$res"};
4305: }
4306:
4307: sub set_first_access {
4308: my ($type,$interval)=@_;
4309: my ($symb,$courseid,$udom,$uname)=&whichuser();
4310: my ($map,$id,$res)=&decode_symb($symb);
4311: if ($type eq 'course') {
4312: $res='course';
4313: } elsif ($type eq 'map') {
4314: $res=&symbread($map);
4315: } else {
4316: $res=$symb;
4317: }
4318: $cachedkey='';
4319: my $firstaccess=&get_first_access($type,$symb,$map);
4320: if (!$firstaccess) {
4321: my $start = time;
4322: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4323: $udom,$uname);
4324: if ($putres eq 'ok') {
4325: &put('timerinterval',{"$courseid\0$res"=>$interval},
4326: $udom,$uname);
4327: &appenv(
4328: {
4329: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4330: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4331: }
4332: );
4333: }
4334: return $putres;
4335: }
4336: return 'already_set';
4337: }
4338: }
4339: # --------------------------------------------- Set Expire Date for Spreadsheet
4340:
4341: sub expirespread {
4342: my ($uname,$udom,$stype,$usymb)=@_;
4343: my $cid=$env{'request.course.id'};
4344: if ($cid) {
4345: my $now=time;
4346: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4347: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4348: $env{'course.'.$cid.'.num'}.
4349: ':nohist_expirationdates:'.
4350: &escape($key).'='.$now,
4351: $env{'course.'.$cid.'.home'})
4352: }
4353: return 'ok';
4354: }
4355:
4356: # ----------------------------------------------------- Devalidate Spreadsheets
4357:
4358: sub devalidate {
4359: my ($symb,$uname,$udom)=@_;
4360: my $cid=$env{'request.course.id'};
4361: if ($cid) {
4362: # delete the stored spreadsheets for
4363: # - the student level sheet of this user in course's homespace
4364: # - the assessment level sheet for this resource
4365: # for this user in user's homespace
4366: # - current conditional state info
4367: my $key=$uname.':'.$udom.':';
4368: my $status=
4369: &del('nohist_calculatedsheets',
4370: [$key.'studentcalc:'],
4371: $env{'course.'.$cid.'.domain'},
4372: $env{'course.'.$cid.'.num'})
4373: .' '.
4374: &del('nohist_calculatedsheets_'.$cid,
4375: [$key.'assesscalc:'.$symb],$udom,$uname);
4376: unless ($status eq 'ok ok') {
4377: &logthis('Could not devalidate spreadsheet '.
4378: $uname.' at '.$udom.' for '.
4379: $symb.': '.$status);
4380: }
4381: &delenv('user.state.'.$cid);
4382: }
4383: }
4384:
4385: sub get_scalar {
4386: my ($string,$end) = @_;
4387: my $value;
4388: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4389: $value = $1;
4390: } elsif ($$string =~ s/^([^&]*?)&//) {
4391: $value = $1;
4392: }
4393: return &unescape($value);
4394: }
4395:
4396: sub array2str {
4397: my (@array) = @_;
4398: my $result=&arrayref2str(\@array);
4399: $result=~s/^__ARRAY_REF__//;
4400: $result=~s/__END_ARRAY_REF__$//;
4401: return $result;
4402: }
4403:
4404: sub arrayref2str {
4405: my ($arrayref) = @_;
4406: my $result='__ARRAY_REF__';
4407: foreach my $elem (@$arrayref) {
4408: if(ref($elem) eq 'ARRAY') {
4409: $result.=&arrayref2str($elem).'&';
4410: } elsif(ref($elem) eq 'HASH') {
4411: $result.=&hashref2str($elem).'&';
4412: } elsif(ref($elem)) {
4413: #print("Got a ref of ".(ref($elem))." skipping.");
4414: } else {
4415: $result.=&escape($elem).'&';
4416: }
4417: }
4418: $result=~s/\&$//;
4419: $result .= '__END_ARRAY_REF__';
4420: return $result;
4421: }
4422:
4423: sub hash2str {
4424: my (%hash) = @_;
4425: my $result=&hashref2str(\%hash);
4426: $result=~s/^__HASH_REF__//;
4427: $result=~s/__END_HASH_REF__$//;
4428: return $result;
4429: }
4430:
4431: sub hashref2str {
4432: my ($hashref)=@_;
4433: my $result='__HASH_REF__';
4434: foreach my $key (sort(keys(%$hashref))) {
4435: if (ref($key) eq 'ARRAY') {
4436: $result.=&arrayref2str($key).'=';
4437: } elsif (ref($key) eq 'HASH') {
4438: $result.=&hashref2str($key).'=';
4439: } elsif (ref($key)) {
4440: $result.='=';
4441: #print("Got a ref of ".(ref($key))." skipping.");
4442: } else {
4443: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4444: }
4445:
4446: if(ref($hashref->{$key}) eq 'ARRAY') {
4447: $result.=&arrayref2str($hashref->{$key}).'&';
4448: } elsif(ref($hashref->{$key}) eq 'HASH') {
4449: $result.=&hashref2str($hashref->{$key}).'&';
4450: } elsif(ref($hashref->{$key})) {
4451: $result.='&';
4452: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4453: } else {
4454: $result.=&escape($hashref->{$key}).'&';
4455: }
4456: }
4457: $result=~s/\&$//;
4458: $result .= '__END_HASH_REF__';
4459: return $result;
4460: }
4461:
4462: sub str2hash {
4463: my ($string)=@_;
4464: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4465: return %$hash;
4466: }
4467:
4468: sub str2hashref {
4469: my ($string) = @_;
4470:
4471: my %hash;
4472:
4473: if($string !~ /^__HASH_REF__/) {
4474: if (! ($string eq '' || !defined($string))) {
4475: $hash{'error'}='Not hash reference';
4476: }
4477: return (\%hash, $string);
4478: }
4479:
4480: $string =~ s/^__HASH_REF__//;
4481:
4482: while($string !~ /^__END_HASH_REF__/) {
4483: #key
4484: my $key='';
4485: if($string =~ /^__HASH_REF__/) {
4486: ($key, $string)=&str2hashref($string);
4487: if(defined($key->{'error'})) {
4488: $hash{'error'}='Bad data';
4489: return (\%hash, $string);
4490: }
4491: } elsif($string =~ /^__ARRAY_REF__/) {
4492: ($key, $string)=&str2arrayref($string);
4493: if($key->[0] eq 'Array reference error') {
4494: $hash{'error'}='Bad data';
4495: return (\%hash, $string);
4496: }
4497: } else {
4498: $string =~ s/^(.*?)=//;
4499: $key=&unescape($1);
4500: }
4501: $string =~ s/^=//;
4502:
4503: #value
4504: my $value='';
4505: if($string =~ /^__HASH_REF__/) {
4506: ($value, $string)=&str2hashref($string);
4507: if(defined($value->{'error'})) {
4508: $hash{'error'}='Bad data';
4509: return (\%hash, $string);
4510: }
4511: } elsif($string =~ /^__ARRAY_REF__/) {
4512: ($value, $string)=&str2arrayref($string);
4513: if($value->[0] eq 'Array reference error') {
4514: $hash{'error'}='Bad data';
4515: return (\%hash, $string);
4516: }
4517: } else {
4518: $value=&get_scalar(\$string,'__END_HASH_REF__');
4519: }
4520: $string =~ s/^&//;
4521:
4522: $hash{$key}=$value;
4523: }
4524:
4525: $string =~ s/^__END_HASH_REF__//;
4526:
4527: return (\%hash, $string);
4528: }
4529:
4530: sub str2array {
4531: my ($string)=@_;
4532: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4533: return @$array;
4534: }
4535:
4536: sub str2arrayref {
4537: my ($string) = @_;
4538: my @array;
4539:
4540: if($string !~ /^__ARRAY_REF__/) {
4541: if (! ($string eq '' || !defined($string))) {
4542: $array[0]='Array reference error';
4543: }
4544: return (\@array, $string);
4545: }
4546:
4547: $string =~ s/^__ARRAY_REF__//;
4548:
4549: while($string !~ /^__END_ARRAY_REF__/) {
4550: my $value='';
4551: if($string =~ /^__HASH_REF__/) {
4552: ($value, $string)=&str2hashref($string);
4553: if(defined($value->{'error'})) {
4554: $array[0] ='Array reference error';
4555: return (\@array, $string);
4556: }
4557: } elsif($string =~ /^__ARRAY_REF__/) {
4558: ($value, $string)=&str2arrayref($string);
4559: if($value->[0] eq 'Array reference error') {
4560: $array[0] ='Array reference error';
4561: return (\@array, $string);
4562: }
4563: } else {
4564: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4565: }
4566: $string =~ s/^&//;
4567:
4568: push(@array, $value);
4569: }
4570:
4571: $string =~ s/^__END_ARRAY_REF__//;
4572:
4573: return (\@array, $string);
4574: }
4575:
4576: # -------------------------------------------------------------------Temp Store
4577:
4578: sub tmpreset {
4579: my ($symb,$namespace,$domain,$stuname) = @_;
4580: if (!$symb) {
4581: $symb=&symbread();
4582: if (!$symb) { $symb= $env{'request.url'}; }
4583: }
4584: $symb=escape($symb);
4585:
4586: if (!$namespace) { $namespace=$env{'request.state'}; }
4587: $namespace=~s/\//\_/g;
4588: $namespace=~s/\W//g;
4589:
4590: if (!$domain) { $domain=$env{'user.domain'}; }
4591: if (!$stuname) { $stuname=$env{'user.name'}; }
4592: if ($domain eq 'public' && $stuname eq 'public') {
4593: $stuname=$ENV{'REMOTE_ADDR'};
4594: }
4595: my $path=LONCAPA::tempdir();
4596: my %hash;
4597: if (tie(%hash,'GDBM_File',
4598: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4599: &GDBM_WRCREAT(),0640)) {
4600: foreach my $key (keys(%hash)) {
4601: if ($key=~ /:$symb/) {
4602: delete($hash{$key});
4603: }
4604: }
4605: }
4606: }
4607:
4608: sub tmpstore {
4609: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4610:
4611: if (!$symb) {
4612: $symb=&symbread();
4613: if (!$symb) { $symb= $env{'request.url'}; }
4614: }
4615: $symb=escape($symb);
4616:
4617: if (!$namespace) {
4618: # I don't think we would ever want to store this for a course.
4619: # it seems this will only be used if we don't have a course.
4620: #$namespace=$env{'request.course.id'};
4621: #if (!$namespace) {
4622: $namespace=$env{'request.state'};
4623: #}
4624: }
4625: $namespace=~s/\//\_/g;
4626: $namespace=~s/\W//g;
4627: if (!$domain) { $domain=$env{'user.domain'}; }
4628: if (!$stuname) { $stuname=$env{'user.name'}; }
4629: if ($domain eq 'public' && $stuname eq 'public') {
4630: $stuname=$ENV{'REMOTE_ADDR'};
4631: }
4632: my $now=time;
4633: my %hash;
4634: my $path=LONCAPA::tempdir();
4635: if (tie(%hash,'GDBM_File',
4636: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4637: &GDBM_WRCREAT(),0640)) {
4638: $hash{"version:$symb"}++;
4639: my $version=$hash{"version:$symb"};
4640: my $allkeys='';
4641: foreach my $key (keys(%$storehash)) {
4642: $allkeys.=$key.':';
4643: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4644: }
4645: $hash{"$version:$symb:timestamp"}=$now;
4646: $allkeys.='timestamp';
4647: $hash{"$version:keys:$symb"}=$allkeys;
4648: if (untie(%hash)) {
4649: return 'ok';
4650: } else {
4651: return "error:$!";
4652: }
4653: } else {
4654: return "error:$!";
4655: }
4656: }
4657:
4658: # -----------------------------------------------------------------Temp Restore
4659:
4660: sub tmprestore {
4661: my ($symb,$namespace,$domain,$stuname) = @_;
4662:
4663: if (!$symb) {
4664: $symb=&symbread();
4665: if (!$symb) { $symb= $env{'request.url'}; }
4666: }
4667: $symb=escape($symb);
4668:
4669: if (!$namespace) { $namespace=$env{'request.state'}; }
4670:
4671: if (!$domain) { $domain=$env{'user.domain'}; }
4672: if (!$stuname) { $stuname=$env{'user.name'}; }
4673: if ($domain eq 'public' && $stuname eq 'public') {
4674: $stuname=$ENV{'REMOTE_ADDR'};
4675: }
4676: my %returnhash;
4677: $namespace=~s/\//\_/g;
4678: $namespace=~s/\W//g;
4679: my %hash;
4680: my $path=LONCAPA::tempdir();
4681: if (tie(%hash,'GDBM_File',
4682: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4683: &GDBM_READER(),0640)) {
4684: my $version=$hash{"version:$symb"};
4685: $returnhash{'version'}=$version;
4686: my $scope;
4687: for ($scope=1;$scope<=$version;$scope++) {
4688: my $vkeys=$hash{"$scope:keys:$symb"};
4689: my @keys=split(/:/,$vkeys);
4690: my $key;
4691: $returnhash{"$scope:keys"}=$vkeys;
4692: foreach $key (@keys) {
4693: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4694: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4695: }
4696: }
4697: if (!(untie(%hash))) {
4698: return "error:$!";
4699: }
4700: } else {
4701: return "error:$!";
4702: }
4703: return %returnhash;
4704: }
4705:
4706: # ----------------------------------------------------------------------- Store
4707:
4708: sub store {
4709: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4710: my $home='';
4711:
4712: if ($stuname) { $home=&homeserver($stuname,$domain); }
4713:
4714: $symb=&symbclean($symb);
4715: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4716:
4717: if (!$domain) { $domain=$env{'user.domain'}; }
4718: if (!$stuname) { $stuname=$env{'user.name'}; }
4719:
4720: &devalidate($symb,$stuname,$domain);
4721:
4722: $symb=escape($symb);
4723: if (!$namespace) {
4724: unless ($namespace=$env{'request.course.id'}) {
4725: return '';
4726: }
4727: }
4728: if (!$home) { $home=$env{'user.home'}; }
4729:
4730: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4731: $$storehash{'host'}=$perlvar{'lonHostID'};
4732:
4733: my $namevalue='';
4734: foreach my $key (keys(%$storehash)) {
4735: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4736: }
4737: $namevalue=~s/\&$//;
4738: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4739: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4740: }
4741:
4742: # -------------------------------------------------------------- Critical Store
4743:
4744: sub cstore {
4745: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4746: my $home='';
4747:
4748: if ($stuname) { $home=&homeserver($stuname,$domain); }
4749:
4750: $symb=&symbclean($symb);
4751: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4752:
4753: if (!$domain) { $domain=$env{'user.domain'}; }
4754: if (!$stuname) { $stuname=$env{'user.name'}; }
4755:
4756: &devalidate($symb,$stuname,$domain);
4757:
4758: $symb=escape($symb);
4759: if (!$namespace) {
4760: unless ($namespace=$env{'request.course.id'}) {
4761: return '';
4762: }
4763: }
4764: if (!$home) { $home=$env{'user.home'}; }
4765:
4766: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4767: $$storehash{'host'}=$perlvar{'lonHostID'};
4768:
4769: my $namevalue='';
4770: foreach my $key (keys(%$storehash)) {
4771: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4772: }
4773: $namevalue=~s/\&$//;
4774: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4775: return critical
4776: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4777: }
4778:
4779: # --------------------------------------------------------------------- Restore
4780:
4781: sub restore {
4782: my ($symb,$namespace,$domain,$stuname) = @_;
4783: my $home='';
4784:
4785: if ($stuname) { $home=&homeserver($stuname,$domain); }
4786:
4787: if (!$symb) {
4788: unless ($symb=escape(&symbread())) { return ''; }
4789: } else {
4790: $symb=&escape(&symbclean($symb));
4791: }
4792: if (!$namespace) {
4793: unless ($namespace=$env{'request.course.id'}) {
4794: return '';
4795: }
4796: }
4797: if (!$domain) { $domain=$env{'user.domain'}; }
4798: if (!$stuname) { $stuname=$env{'user.name'}; }
4799: if (!$home) { $home=$env{'user.home'}; }
4800: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4801:
4802: my %returnhash=();
4803: foreach my $line (split(/\&/,$answer)) {
4804: my ($name,$value)=split(/\=/,$line);
4805: $returnhash{&unescape($name)}=&thaw_unescape($value);
4806: }
4807: my $version;
4808: for ($version=1;$version<=$returnhash{'version'};$version++) {
4809: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4810: $returnhash{$item}=$returnhash{$version.':'.$item};
4811: }
4812: }
4813: return %returnhash;
4814: }
4815:
4816: # ---------------------------------------------------------- Course Description
4817: #
4818: #
4819:
4820: sub coursedescription {
4821: my ($courseid,$args)=@_;
4822: $courseid=~s/^\///;
4823: $courseid=~s/\_/\//g;
4824: my ($cdomain,$cnum)=split(/\//,$courseid);
4825: my $chome=&homeserver($cnum,$cdomain);
4826: my $normalid=$cdomain.'_'.$cnum;
4827: # need to always cache even if we get errors otherwise we keep
4828: # trying and trying and trying to get the course description.
4829: my %envhash=();
4830: my %returnhash=();
4831:
4832: my $expiretime=600;
4833: if ($env{'request.course.id'} eq $normalid) {
4834: $expiretime=120;
4835: }
4836:
4837: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4838: if (!$args->{'freshen_cache'}
4839: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4840: foreach my $key (keys(%env)) {
4841: next if ($key !~ /^\Q$prefix\E(.*)/);
4842: my ($setting) = $1;
4843: $returnhash{$setting} = $env{$key};
4844: }
4845: return %returnhash;
4846: }
4847:
4848: # get the data again
4849:
4850: if (!$args->{'one_time'}) {
4851: $envhash{'course.'.$normalid.'.last_cache'}=time;
4852: }
4853:
4854: if ($chome ne 'no_host') {
4855: %returnhash=&dump('environment',$cdomain,$cnum);
4856: if (!exists($returnhash{'con_lost'})) {
4857: my $username = $env{'user.name'}; # Defult username
4858: if(defined $args->{'user'}) {
4859: $username = $args->{'user'};
4860: }
4861: $returnhash{'home'}= $chome;
4862: $returnhash{'domain'} = $cdomain;
4863: $returnhash{'num'} = $cnum;
4864: if (!defined($returnhash{'type'})) {
4865: $returnhash{'type'} = 'Course';
4866: }
4867: while (my ($name,$value) = each %returnhash) {
4868: $envhash{'course.'.$normalid.'.'.$name}=$value;
4869: }
4870: $returnhash{'url'}=&clutter($returnhash{'url'});
4871: $returnhash{'fn'}=LONCAPA::tempdir() .
4872: $username.'_'.$cdomain.'_'.$cnum;
4873: $envhash{'course.'.$normalid.'.home'}=$chome;
4874: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4875: $envhash{'course.'.$normalid.'.num'}=$cnum;
4876: }
4877: }
4878: if (!$args->{'one_time'}) {
4879: &appenv(\%envhash);
4880: }
4881: return %returnhash;
4882: }
4883:
4884: sub update_released_required {
4885: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4886: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4887: $cid = $env{'request.course.id'};
4888: $cdom = $env{'course.'.$cid.'.domain'};
4889: $cnum = $env{'course.'.$cid.'.num'};
4890: $chome = $env{'course.'.$cid.'.home'};
4891: }
4892: if ($needsrelease) {
4893: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4894: my $needsupdate;
4895: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4896: $needsupdate = 1;
4897: } else {
4898: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4899: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4900: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4901: $needsupdate = 1;
4902: }
4903: }
4904: if ($needsupdate) {
4905: my %needshash = (
4906: 'internal.releaserequired' => $needsrelease,
4907: );
4908: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4909: if ($putresult eq 'ok') {
4910: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4911: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4912: if (ref($crsinfo{$cid}) eq 'HASH') {
4913: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4914: &courseidput($cdom,\%crsinfo,$chome,'notime');
4915: }
4916: }
4917: }
4918: }
4919: return;
4920: }
4921:
4922: # -------------------------------------------------See if a user is privileged
4923:
4924: sub privileged {
4925: my ($username,$domain)=@_;
4926:
4927: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4928: my $now = time;
4929:
4930: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4931: my ($trole, $tend, $tstart) = split(/_/, $role);
4932: if (($trole eq 'dc') || ($trole eq 'su')) {
4933: return 1 unless ($tend && $tend < $now)
4934: or ($tstart && $tstart > $now);
4935: }
4936: }
4937:
4938: return 0;
4939: }
4940:
4941: # -------------------------------------------------------- Get user privileges
4942:
4943: sub rolesinit {
4944: my ($domain, $username) = @_;
4945: my %userroles = ('user.login.time' => time);
4946: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4947:
4948: # firstaccess and timerinterval are related to timed maps/resources.
4949: # also, blocking can be triggered by an activating timer
4950: # it's saved in the user's %env.
4951: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4952: my %timerinterval = &dump('timerinterval', $domain, $username);
4953: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4954: %timerintchk, %timerintenv);
4955:
4956: foreach my $key (keys(%firstaccess)) {
4957: my ($cid, $rest) = split(/\0/, $key);
4958: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4959: }
4960:
4961: foreach my $key (keys(%timerinterval)) {
4962: my ($cid,$rest) = split(/\0/,$key);
4963: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4964: }
4965:
4966: my %allroles=();
4967: my %allgroups=();
4968:
4969: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4970: my $role = $rolesdump{$area};
4971: $area =~ s/\_\w\w$//;
4972:
4973: my ($trole, $tend, $tstart, $group_privs);
4974:
4975: if ($role =~ /^cr/) {
4976: # Custom role, defined by a user
4977: # e.g., user.role.cr/msu/smith/mynewrole
4978: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4979: $trole = $1;
4980: ($tend, $tstart) = split('_', $2);
4981: } else {
4982: $trole = $role;
4983: }
4984: } elsif ($role =~ m|^gr/|) {
4985: # Role of member in a group, defined within a course/community
4986: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4987: ($trole, $tend, $tstart) = split(/_/, $role);
4988: next if $tstart eq '-1';
4989: ($trole, $group_privs) = split(/\//, $trole);
4990: $group_privs = &unescape($group_privs);
4991: } else {
4992: # Just a normal role, defined in roles.tab
4993: ($trole, $tend, $tstart) = split(/_/,$role);
4994: }
4995:
4996: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4997: $username);
4998: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4999:
5000: # role expired or not available yet?
5001: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5002: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5003:
5004: next if $area eq '' or $trole eq '';
5005:
5006: my $spec = "$trole.$area";
5007: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5008:
5009: if ($trole =~ /^cr\//) {
5010: # Custom role, defined by a user
5011: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5012: } elsif ($trole eq 'gr') {
5013: # Role of a member in a group, defined within a course/community
5014: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5015: next;
5016: } else {
5017: # Normal role, defined in roles.tab
5018: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5019: }
5020:
5021: my $cid = $tdomain.'_'.$trest;
5022: unless ($firstaccchk{$cid}) {
5023: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5024: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5025: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5026: $coursetimerstarts{$cid}{$item};
5027: }
5028: }
5029: $firstaccchk{$cid} = 1;
5030: }
5031: unless ($timerintchk{$cid}) {
5032: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5033: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5034: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5035: $coursetimerintervals{$cid}{$item};
5036: }
5037: }
5038: $timerintchk{$cid} = 1;
5039: }
5040: }
5041:
5042: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5043: \%allroles, \%allgroups);
5044: $env{'user.adv'} = $userroles{'user.adv'};
5045:
5046: return (\%userroles,\%firstaccenv,\%timerintenv);
5047: }
5048:
5049: sub set_arearole {
5050: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
5051: # log the associated role with the area
5052: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5053: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5054: }
5055:
5056: sub custom_roleprivs {
5057: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5058: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5059: my $homsvr=homeserver($rauthor,$rdomain);
5060: if (&hostname($homsvr) ne '') {
5061: my ($rdummy,$roledef)=
5062: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5063: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5064: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5065: if (defined($syspriv)) {
5066: if ($trest =~ /^$match_community$/) {
5067: $syspriv =~ s/bre\&S//;
5068: }
5069: $$allroles{'cm./'}.=':'.$syspriv;
5070: $$allroles{$spec.'./'}.=':'.$syspriv;
5071: }
5072: if ($tdomain ne '') {
5073: if (defined($dompriv)) {
5074: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5075: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5076: }
5077: if (($trest ne '') && (defined($coursepriv))) {
5078: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5079: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5080: }
5081: }
5082: }
5083: }
5084: }
5085:
5086: sub group_roleprivs {
5087: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5088: my $access = 1;
5089: my $now = time;
5090: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5091: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5092: if ($access) {
5093: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5094: $$allgroups{$course}{$group} .=':'.$group_privs;
5095: }
5096: }
5097:
5098: sub standard_roleprivs {
5099: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5100: if (defined($pr{$trole.':s'})) {
5101: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5102: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5103: }
5104: if ($tdomain ne '') {
5105: if (defined($pr{$trole.':d'})) {
5106: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5107: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5108: }
5109: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5110: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5111: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5112: }
5113: }
5114: }
5115:
5116: sub set_userprivs {
5117: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5118: my $author=0;
5119: my $adv=0;
5120: my %grouproles = ();
5121: if (keys(%{$allgroups}) > 0) {
5122: my @groupkeys;
5123: foreach my $role (keys(%{$allroles})) {
5124: push(@groupkeys,$role);
5125: }
5126: if (ref($groups_roles) eq 'HASH') {
5127: foreach my $key (keys(%{$groups_roles})) {
5128: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5129: push(@groupkeys,$key);
5130: }
5131: }
5132: }
5133: if (@groupkeys > 0) {
5134: foreach my $role (@groupkeys) {
5135: my ($trole,$area,$sec,$extendedarea);
5136: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5137: $trole = $1;
5138: $area = $2;
5139: $sec = $3;
5140: $extendedarea = $area.$sec;
5141: if (exists($$allgroups{$area})) {
5142: foreach my $group (keys(%{$$allgroups{$area}})) {
5143: my $spec = $trole.'.'.$extendedarea;
5144: $grouproles{$spec.'.'.$area.'/'.$group} =
5145: $$allgroups{$area}{$group};
5146: }
5147: }
5148: }
5149: }
5150: }
5151: }
5152: foreach my $group (keys(%grouproles)) {
5153: $$allroles{$group} = $grouproles{$group};
5154: }
5155: foreach my $role (keys(%{$allroles})) {
5156: my %thesepriv;
5157: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5158: foreach my $item (split(/:/,$$allroles{$role})) {
5159: if ($item ne '') {
5160: my ($privilege,$restrictions)=split(/&/,$item);
5161: if ($restrictions eq '') {
5162: $thesepriv{$privilege}='F';
5163: } elsif ($thesepriv{$privilege} ne 'F') {
5164: $thesepriv{$privilege}.=$restrictions;
5165: }
5166: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5167: }
5168: }
5169: my $thesestr='';
5170: foreach my $priv (sort(keys(%thesepriv))) {
5171: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5172: }
5173: $userroles->{'user.priv.'.$role} = $thesestr;
5174: }
5175: return ($author,$adv);
5176: }
5177:
5178: sub role_status {
5179: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5180: my @pwhere = ();
5181: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5182: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
5183: unless (!defined($$role) || $$role eq '') {
5184: $$where=join('.',@pwhere);
5185: $$trolecode=$$role.'.'.$$where;
5186: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5187: $$tstatus='is';
5188: if ($$tstart && $$tstart>$update) {
5189: $$tstatus='future';
5190: if ($$tstart<$now) {
5191: if ($$tstart && $$tstart>$refresh) {
5192: if (($$where ne '') && ($$role ne '')) {
5193: my (%allroles,%allgroups,$group_privs,
5194: %groups_roles,@rolecodes);
5195: my %userroles = (
5196: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5197: );
5198: @rolecodes = ('cm');
5199: my $spec=$$role.'.'.$$where;
5200: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5201: if ($$role =~ /^cr\//) {
5202: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5203: push(@rolecodes,'cr');
5204: } elsif ($$role eq 'gr') {
5205: push(@rolecodes,$$role);
5206: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5207: $env{'user.name'});
5208: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5209: (undef,my $group_privs) = split(/\//,$trole);
5210: $group_privs = &unescape($group_privs);
5211: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5212: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5213: &get_groups_roles($tdomain,$trest,
5214: \%course_roles,\@rolecodes,
5215: \%groups_roles);
5216: } else {
5217: push(@rolecodes,$$role);
5218: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5219: }
5220: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5221: &appenv(\%userroles,\@rolecodes);
5222: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5223: }
5224: }
5225: $$tstatus = 'is';
5226: }
5227: }
5228: if ($$tend) {
5229: if ($$tend<$update) {
5230: $$tstatus='expired';
5231: } elsif ($$tend<$now) {
5232: $$tstatus='will_not';
5233: }
5234: }
5235: }
5236: }
5237: }
5238:
5239: sub get_groups_roles {
5240: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5241: return unless((ref($cdom_courseroles) eq 'HASH') &&
5242: (ref($rolecodes) eq 'ARRAY') &&
5243: (ref($groups_roles) eq 'HASH'));
5244: if (keys(%{$cdom_courseroles}) > 0) {
5245: my ($cnum) = ($rest =~ /^($match_courseid)/);
5246: if ($cdom ne '' && $cnum ne '') {
5247: foreach my $key (keys(%{$cdom_courseroles})) {
5248: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5249: my $crsrole = $1;
5250: my $crssec = $2;
5251: if ($crsrole =~ /^cr/) {
5252: unless (grep(/^cr$/,@{$rolecodes})) {
5253: push(@{$rolecodes},'cr');
5254: }
5255: } else {
5256: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5257: push(@{$rolecodes},$crsrole);
5258: }
5259: }
5260: my $rolekey = "$crsrole./$cdom/$cnum";
5261: if ($crssec ne '') {
5262: $rolekey .= "/$crssec";
5263: }
5264: $rolekey .= './';
5265: $groups_roles->{$rolekey} = $rolecodes;
5266: }
5267: }
5268: }
5269: }
5270: return;
5271: }
5272:
5273: sub delete_env_groupprivs {
5274: my ($where,$courseroles,$possroles) = @_;
5275: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5276: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5277: unless (ref($courseroles->{$udom}) eq 'HASH') {
5278: %{$courseroles->{$udom}} =
5279: &get_my_roles('','','userroles',['active'],
5280: $possroles,[$udom],1);
5281: }
5282: if (ref($courseroles->{$udom}) eq 'HASH') {
5283: foreach my $item (keys(%{$courseroles->{$udom}})) {
5284: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5285: my $area = '/'.$cdom.'/'.$cnum;
5286: my $privkey = "user.priv.$crsrole.$area";
5287: if ($crssec ne '') {
5288: $privkey .= '/'.$crssec;
5289: }
5290: $privkey .= ".$area/$group";
5291: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5292: }
5293: }
5294: return;
5295: }
5296:
5297: sub check_adhoc_privs {
5298: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5299: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5300: my $setprivs;
5301: if ($env{$cckey}) {
5302: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5303: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5304: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5305: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5306: $setprivs = 1;
5307: }
5308: } else {
5309: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5310: $setprivs = 1;
5311: }
5312: return $setprivs;
5313: }
5314:
5315: sub set_adhoc_privileges {
5316: # role can be cc or ca
5317: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5318: my $area = '/'.$dcdom.'/'.$pickedcourse;
5319: my $spec = $role.'.'.$area;
5320: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5321: $env{'user.name'});
5322: my %ccrole = ();
5323: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5324: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5325: &appenv(\%userroles,[$role,'cm']);
5326: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5327: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5328: &appenv( {'request.role' => $spec,
5329: 'request.role.domain' => $dcdom,
5330: 'request.course.sec' => ''
5331: }
5332: );
5333: my $tadv=0;
5334: if (&allowed('adv') eq 'F') { $tadv=1; }
5335: &appenv({'request.role.adv' => $tadv});
5336: }
5337: }
5338:
5339: # --------------------------------------------------------------- get interface
5340:
5341: sub get {
5342: my ($namespace,$storearr,$udomain,$uname)=@_;
5343: my $items='';
5344: foreach my $item (@$storearr) {
5345: $items.=&escape($item).'&';
5346: }
5347: $items=~s/\&$//;
5348: if (!$udomain) { $udomain=$env{'user.domain'}; }
5349: if (!$uname) { $uname=$env{'user.name'}; }
5350: my $uhome=&homeserver($uname,$udomain);
5351:
5352: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5353: my @pairs=split(/\&/,$rep);
5354: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5355: return @pairs;
5356: }
5357: my %returnhash=();
5358: my $i=0;
5359: foreach my $item (@$storearr) {
5360: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5361: $i++;
5362: }
5363: return %returnhash;
5364: }
5365:
5366: # --------------------------------------------------------------- del interface
5367:
5368: sub del {
5369: my ($namespace,$storearr,$udomain,$uname)=@_;
5370: my $items='';
5371: foreach my $item (@$storearr) {
5372: $items.=&escape($item).'&';
5373: }
5374:
5375: $items=~s/\&$//;
5376: if (!$udomain) { $udomain=$env{'user.domain'}; }
5377: if (!$uname) { $uname=$env{'user.name'}; }
5378: my $uhome=&homeserver($uname,$udomain);
5379: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5380: }
5381:
5382: # -------------------------------------------------------------- dump interface
5383:
5384: sub unserialize {
5385: my ($rep, $escapedkeys) = @_;
5386:
5387: return {} if $rep =~ /^error/;
5388:
5389: my %returnhash=();
5390: foreach my $item (split /\&/, $rep) {
5391: my ($key, $value) = split(/=/, $item, 2);
5392: $key = unescape($key) unless $escapedkeys;
5393: next if $key =~ /^error: 2 /;
5394: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5395: }
5396: #return %returnhash;
5397: return \%returnhash;
5398: }
5399:
5400: # see Lond::dump_with_regexp
5401: # if $escapedkeys hash keys won't get unescaped.
5402: sub dump {
5403: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5404: if (!$udomain) { $udomain=$env{'user.domain'}; }
5405: if (!$uname) { $uname=$env{'user.name'}; }
5406: my $uhome=&homeserver($uname,$udomain);
5407:
5408: my $reply;
5409: if (grep { $_ eq $uhome } current_machine_ids()) {
5410: # user is hosted on this machine
5411: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5412: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5413: return %{unserialize($reply, $escapedkeys)};
5414: }
5415: if ($regexp) {
5416: $regexp=&escape($regexp);
5417: } else {
5418: $regexp='.';
5419: }
5420: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5421: my @pairs=split(/\&/,$rep);
5422: my %returnhash=();
5423: if (!($rep =~ /^error/ )) {
5424: foreach my $item (@pairs) {
5425: my ($key,$value)=split(/=/,$item,2);
5426: $key = unescape($key) unless $escapedkeys;
5427: #$key = &unescape($key);
5428: next if ($key =~ /^error: 2 /);
5429: $returnhash{$key}=&thaw_unescape($value);
5430: }
5431: }
5432: return %returnhash;
5433: }
5434:
5435:
5436: # --------------------------------------------------------- dumpstore interface
5437:
5438: sub dumpstore {
5439: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5440: # same as dump but keys must be escaped. They may contain colon separated
5441: # lists of values that may themself contain colons (e.g. symbs).
5442: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5443: }
5444:
5445: # -------------------------------------------------------------- keys interface
5446:
5447: sub getkeys {
5448: my ($namespace,$udomain,$uname)=@_;
5449: if (!$udomain) { $udomain=$env{'user.domain'}; }
5450: if (!$uname) { $uname=$env{'user.name'}; }
5451: my $uhome=&homeserver($uname,$udomain);
5452: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5453: my @keyarray=();
5454: foreach my $key (split(/\&/,$rep)) {
5455: next if ($key =~ /^error: 2 /);
5456: push(@keyarray,&unescape($key));
5457: }
5458: return @keyarray;
5459: }
5460:
5461: # --------------------------------------------------------------- currentdump
5462: sub currentdump {
5463: my ($courseid,$sdom,$sname)=@_;
5464: $courseid = $env{'request.course.id'} if (! defined($courseid));
5465: $sdom = $env{'user.domain'} if (! defined($sdom));
5466: $sname = $env{'user.name'} if (! defined($sname));
5467: my $uhome = &homeserver($sname,$sdom);
5468: my $rep;
5469:
5470: if (grep { $_ eq $uhome } current_machine_ids()) {
5471: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5472: $courseid)));
5473: } else {
5474: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5475: }
5476:
5477: return if ($rep =~ /^(error:|no_such_host)/);
5478: #
5479: my %returnhash=();
5480: #
5481: if ($rep eq "unknown_cmd") {
5482: # an old lond will not know currentdump
5483: # Do a dump and make it look like a currentdump
5484: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5485: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5486: my %hash = @tmp;
5487: @tmp=();
5488: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5489: } else {
5490: my @pairs=split(/\&/,$rep);
5491: foreach my $pair (@pairs) {
5492: my ($key,$value)=split(/=/,$pair,2);
5493: my ($symb,$param) = split(/:/,$key);
5494: $returnhash{&unescape($symb)}->{&unescape($param)} =
5495: &thaw_unescape($value);
5496: }
5497: }
5498: return %returnhash;
5499: }
5500:
5501: sub convert_dump_to_currentdump{
5502: my %hash = %{shift()};
5503: my %returnhash;
5504: # Code ripped from lond, essentially. The only difference
5505: # here is the unescaping done by lonnet::dump(). Conceivably
5506: # we might run in to problems with parameter names =~ /^v\./
5507: while (my ($key,$value) = each(%hash)) {
5508: my ($v,$symb,$param) = split(/:/,$key);
5509: $symb = &unescape($symb);
5510: $param = &unescape($param);
5511: next if ($v eq 'version' || $symb eq 'keys');
5512: next if (exists($returnhash{$symb}) &&
5513: exists($returnhash{$symb}->{$param}) &&
5514: $returnhash{$symb}->{'v.'.$param} > $v);
5515: $returnhash{$symb}->{$param}=$value;
5516: $returnhash{$symb}->{'v.'.$param}=$v;
5517: }
5518: #
5519: # Remove all of the keys in the hashes which keep track of
5520: # the version of the parameter.
5521: while (my ($symb,$param_hash) = each(%returnhash)) {
5522: # use a foreach because we are going to delete from the hash.
5523: foreach my $key (keys(%$param_hash)) {
5524: delete($param_hash->{$key}) if ($key =~ /^v\./);
5525: }
5526: }
5527: return \%returnhash;
5528: }
5529:
5530: # ------------------------------------------------------ critical inc interface
5531:
5532: sub cinc {
5533: return &inc(@_,'critical');
5534: }
5535:
5536: # --------------------------------------------------------------- inc interface
5537:
5538: sub inc {
5539: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5540: if (!$udomain) { $udomain=$env{'user.domain'}; }
5541: if (!$uname) { $uname=$env{'user.name'}; }
5542: my $uhome=&homeserver($uname,$udomain);
5543: my $items='';
5544: if (! ref($store)) {
5545: # got a single value, so use that instead
5546: $items = &escape($store).'=&';
5547: } elsif (ref($store) eq 'SCALAR') {
5548: $items = &escape($$store).'=&';
5549: } elsif (ref($store) eq 'ARRAY') {
5550: $items = join('=&',map {&escape($_);} @{$store});
5551: } elsif (ref($store) eq 'HASH') {
5552: while (my($key,$value) = each(%{$store})) {
5553: $items.= &escape($key).'='.&escape($value).'&';
5554: }
5555: }
5556: $items=~s/\&$//;
5557: if ($critical) {
5558: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5559: } else {
5560: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5561: }
5562: }
5563:
5564: # --------------------------------------------------------------- put interface
5565:
5566: sub put {
5567: my ($namespace,$storehash,$udomain,$uname)=@_;
5568: if (!$udomain) { $udomain=$env{'user.domain'}; }
5569: if (!$uname) { $uname=$env{'user.name'}; }
5570: my $uhome=&homeserver($uname,$udomain);
5571: my $items='';
5572: foreach my $item (keys(%$storehash)) {
5573: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5574: }
5575: $items=~s/\&$//;
5576: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5577: }
5578:
5579: # ------------------------------------------------------------ newput interface
5580:
5581: sub newput {
5582: my ($namespace,$storehash,$udomain,$uname)=@_;
5583: if (!$udomain) { $udomain=$env{'user.domain'}; }
5584: if (!$uname) { $uname=$env{'user.name'}; }
5585: my $uhome=&homeserver($uname,$udomain);
5586: my $items='';
5587: foreach my $key (keys(%$storehash)) {
5588: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5589: }
5590: $items=~s/\&$//;
5591: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5592: }
5593:
5594: # --------------------------------------------------------- putstore interface
5595:
5596: sub putstore {
5597: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5598: if (!$udomain) { $udomain=$env{'user.domain'}; }
5599: if (!$uname) { $uname=$env{'user.name'}; }
5600: my $uhome=&homeserver($uname,$udomain);
5601: my $items='';
5602: foreach my $key (keys(%$storehash)) {
5603: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5604: }
5605: $items=~s/\&$//;
5606: my $esc_symb=&escape($symb);
5607: my $esc_v=&escape($version);
5608: my $reply =
5609: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5610: $uhome);
5611: if ($reply eq 'unknown_cmd') {
5612: # gfall back to way things use to be done
5613: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5614: $uname);
5615: }
5616: return $reply;
5617: }
5618:
5619: sub old_putstore {
5620: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5621: if (!$udomain) { $udomain=$env{'user.domain'}; }
5622: if (!$uname) { $uname=$env{'user.name'}; }
5623: my $uhome=&homeserver($uname,$udomain);
5624: my %newstorehash;
5625: foreach my $item (keys(%$storehash)) {
5626: my $key = $version.':'.&escape($symb).':'.$item;
5627: $newstorehash{$key} = $storehash->{$item};
5628: }
5629: my $items='';
5630: my %allitems = ();
5631: foreach my $item (keys(%newstorehash)) {
5632: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5633: my $key = $1.':keys:'.$2;
5634: $allitems{$key} .= $3.':';
5635: }
5636: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5637: }
5638: foreach my $item (keys(%allitems)) {
5639: $allitems{$item} =~ s/\:$//;
5640: $items.= $item.'='.$allitems{$item}.'&';
5641: }
5642: $items=~s/\&$//;
5643: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5644: }
5645:
5646: # ------------------------------------------------------ critical put interface
5647:
5648: sub cput {
5649: my ($namespace,$storehash,$udomain,$uname)=@_;
5650: if (!$udomain) { $udomain=$env{'user.domain'}; }
5651: if (!$uname) { $uname=$env{'user.name'}; }
5652: my $uhome=&homeserver($uname,$udomain);
5653: my $items='';
5654: foreach my $item (keys(%$storehash)) {
5655: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5656: }
5657: $items=~s/\&$//;
5658: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5659: }
5660:
5661: # -------------------------------------------------------------- eget interface
5662:
5663: sub eget {
5664: my ($namespace,$storearr,$udomain,$uname)=@_;
5665: my $items='';
5666: foreach my $item (@$storearr) {
5667: $items.=&escape($item).'&';
5668: }
5669: $items=~s/\&$//;
5670: if (!$udomain) { $udomain=$env{'user.domain'}; }
5671: if (!$uname) { $uname=$env{'user.name'}; }
5672: my $uhome=&homeserver($uname,$udomain);
5673: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5674: my @pairs=split(/\&/,$rep);
5675: my %returnhash=();
5676: my $i=0;
5677: foreach my $item (@$storearr) {
5678: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5679: $i++;
5680: }
5681: return %returnhash;
5682: }
5683:
5684: # ------------------------------------------------------------ tmpput interface
5685: sub tmpput {
5686: my ($storehash,$server,$context)=@_;
5687: my $items='';
5688: foreach my $item (keys(%$storehash)) {
5689: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5690: }
5691: $items=~s/\&$//;
5692: if (defined($context)) {
5693: $items .= ':'.&escape($context);
5694: }
5695: return &reply("tmpput:$items",$server);
5696: }
5697:
5698: # ------------------------------------------------------------ tmpget interface
5699: sub tmpget {
5700: my ($token,$server)=@_;
5701: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5702: my $rep=&reply("tmpget:$token",$server);
5703: my %returnhash;
5704: foreach my $item (split(/\&/,$rep)) {
5705: my ($key,$value)=split(/=/,$item);
5706: next if ($key =~ /^error: 2 /);
5707: $returnhash{&unescape($key)}=&thaw_unescape($value);
5708: }
5709: return %returnhash;
5710: }
5711:
5712: # ------------------------------------------------------------ tmpdel interface
5713: sub tmpdel {
5714: my ($token,$server)=@_;
5715: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5716: return &reply("tmpdel:$token",$server);
5717: }
5718:
5719: # ------------------------------------------------------------ get_timebased_id
5720:
5721: sub get_timebased_id {
5722: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
5723: $maxtries) = @_;
5724: my ($newid,$error,$dellock);
5725: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
5726: return ('','ok','invalid call to get suffix');
5727: }
5728:
5729: # set defaults for any optional args for which values were not supplied
5730: if ($who eq '') {
5731: $who = $env{'user.name'}.':'.$env{'user.domain'};
5732: }
5733: if (!$locktries) {
5734: $locktries = 3;
5735: }
5736: if (!$maxtries) {
5737: $maxtries = 10;
5738: }
5739:
5740: if (($cdom eq '') || ($cnum eq '')) {
5741: if ($env{'request.course.id'}) {
5742: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
5743: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
5744: }
5745: if (($cdom eq '') || ($cnum eq '')) {
5746: return ('','ok','call to get suffix not in course context');
5747: }
5748: }
5749:
5750: # construct locking item
5751: my $lockhash = {
5752: $prefix."\0".'locked_'.$keyid => $who,
5753: };
5754: my $tries = 0;
5755:
5756: # attempt to get lock on nohist_$namespace file
5757: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5758: while (($gotlock ne 'ok') && $tries <$locktries) {
5759: $tries ++;
5760: sleep 1;
5761: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
5762: }
5763:
5764: # attempt to get unique identifier, based on current timestamp
5765: if ($gotlock eq 'ok') {
5766: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
5767: my $id = time;
5768: $newid = $id;
5769: my $idtries = 0;
5770: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
5771: if ($idtype eq 'concat') {
5772: $newid = $id.$idtries;
5773: } else {
5774: $newid ++;
5775: }
5776: $idtries ++;
5777: }
5778: if (!exists($inuse{$prefix."\0".$newid})) {
5779: my %new_item = (
5780: $prefix."\0".$newid => $who,
5781: );
5782: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
5783: $cdom,$cnum);
5784: if ($putresult ne 'ok') {
5785: undef($newid);
5786: $error = 'error saving new item: '.$putresult;
5787: }
5788: } else {
5789: $error = ('error: no unique suffix available for the new item ');
5790: }
5791: # remove lock
5792: my @del_lock = ($prefix."\0".'locked_'.$keyid);
5793: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
5794: } else {
5795: $error = "error: could not obtain lockfile\n";
5796: $dellock = 'ok';
5797: }
5798: return ($newid,$dellock,$error);
5799: }
5800:
5801: # -------------------------------------------------- portfolio access checking
5802:
5803: sub portfolio_access {
5804: my ($requrl) = @_;
5805: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5806: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5807: if ($result) {
5808: my %setters;
5809: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5810: my ($startblock,$endblock) =
5811: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5812: if ($startblock && $endblock) {
5813: return 'B';
5814: }
5815: } else {
5816: my ($startblock,$endblock) =
5817: &Apache::loncommon::blockcheck(\%setters,'port');
5818: if ($startblock && $endblock) {
5819: return 'B';
5820: }
5821: }
5822: }
5823: if ($result eq 'ok') {
5824: return 'F';
5825: } elsif ($result =~ /^[^:]+:guest_/) {
5826: return 'A';
5827: }
5828: return '';
5829: }
5830:
5831: sub get_portfolio_access {
5832: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5833:
5834: if (!ref($access_hash)) {
5835: my $current_perms = &get_portfile_permissions($udom,$unum);
5836: my %access_controls = &get_access_controls($current_perms,$group,
5837: $file_name);
5838: $access_hash = $access_controls{$file_name};
5839: }
5840:
5841: my ($public,$guest,@domains,@users,@courses,@groups);
5842: my $now = time;
5843: if (ref($access_hash) eq 'HASH') {
5844: foreach my $key (keys(%{$access_hash})) {
5845: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5846: if ($start > $now) {
5847: next;
5848: }
5849: if ($end && $end<$now) {
5850: next;
5851: }
5852: if ($scope eq 'public') {
5853: $public = $key;
5854: last;
5855: } elsif ($scope eq 'guest') {
5856: $guest = $key;
5857: } elsif ($scope eq 'domains') {
5858: push(@domains,$key);
5859: } elsif ($scope eq 'users') {
5860: push(@users,$key);
5861: } elsif ($scope eq 'course') {
5862: push(@courses,$key);
5863: } elsif ($scope eq 'group') {
5864: push(@groups,$key);
5865: }
5866: }
5867: if ($public) {
5868: return 'ok';
5869: }
5870: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5871: if ($guest) {
5872: return $guest;
5873: }
5874: } else {
5875: if (@domains > 0) {
5876: foreach my $domkey (@domains) {
5877: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5878: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5879: return 'ok';
5880: }
5881: }
5882: }
5883: }
5884: if (@users > 0) {
5885: foreach my $userkey (@users) {
5886: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5887: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5888: if (ref($item) eq 'HASH') {
5889: if (($item->{'uname'} eq $env{'user.name'}) &&
5890: ($item->{'udom'} eq $env{'user.domain'})) {
5891: return 'ok';
5892: }
5893: }
5894: }
5895: }
5896: }
5897: }
5898: my %roleshash;
5899: my @courses_and_groups = @courses;
5900: push(@courses_and_groups,@groups);
5901: if (@courses_and_groups > 0) {
5902: my (%allgroups,%allroles);
5903: my ($start,$end,$role,$sec,$group);
5904: foreach my $envkey (%env) {
5905: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5906: my $cid = $2.'_'.$3;
5907: if ($1 eq 'gr') {
5908: $group = $4;
5909: $allgroups{$cid}{$group} = $env{$envkey};
5910: } else {
5911: if ($4 eq '') {
5912: $sec = 'none';
5913: } else {
5914: $sec = $4;
5915: }
5916: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5917: }
5918: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5919: my $cid = $2.'_'.$3;
5920: if ($4 eq '') {
5921: $sec = 'none';
5922: } else {
5923: $sec = $4;
5924: }
5925: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5926: }
5927: }
5928: if (keys(%allroles) == 0) {
5929: return;
5930: }
5931: foreach my $key (@courses_and_groups) {
5932: my %content = %{$$access_hash{$key}};
5933: my $cnum = $content{'number'};
5934: my $cdom = $content{'domain'};
5935: my $cid = $cdom.'_'.$cnum;
5936: if (!exists($allroles{$cid})) {
5937: next;
5938: }
5939: foreach my $role_id (keys(%{$content{'roles'}})) {
5940: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5941: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5942: my @status = @{$content{'roles'}{$role_id}{'access'}};
5943: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5944: foreach my $role (keys(%{$allroles{$cid}})) {
5945: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5946: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5947: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5948: if (grep/^all$/,@sections) {
5949: return 'ok';
5950: } else {
5951: if (grep/^$sec$/,@sections) {
5952: return 'ok';
5953: }
5954: }
5955: }
5956: }
5957: if (keys(%{$allgroups{$cid}}) == 0) {
5958: if (grep/^none$/,@groups) {
5959: return 'ok';
5960: }
5961: } else {
5962: if (grep/^all$/,@groups) {
5963: return 'ok';
5964: }
5965: foreach my $group (keys(%{$allgroups{$cid}})) {
5966: if (grep/^$group$/,@groups) {
5967: return 'ok';
5968: }
5969: }
5970: }
5971: }
5972: }
5973: }
5974: }
5975: }
5976: if ($guest) {
5977: return $guest;
5978: }
5979: }
5980: }
5981: return;
5982: }
5983:
5984: sub course_group_datechecker {
5985: my ($dates,$now,$status) = @_;
5986: my ($start,$end) = split(/\./,$dates);
5987: if (!$start && !$end) {
5988: return 'ok';
5989: }
5990: if (grep/^active$/,@{$status}) {
5991: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5992: return 'ok';
5993: }
5994: }
5995: if (grep/^previous$/,@{$status}) {
5996: if ($end > $now ) {
5997: return 'ok';
5998: }
5999: }
6000: if (grep/^future$/,@{$status}) {
6001: if ($start > $now) {
6002: return 'ok';
6003: }
6004: }
6005: return;
6006: }
6007:
6008: sub parse_portfolio_url {
6009: my ($url) = @_;
6010:
6011: my ($type,$udom,$unum,$group,$file_name);
6012:
6013: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6014: $type = 1;
6015: $udom = $1;
6016: $unum = $2;
6017: $file_name = $3;
6018: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6019: $type = 2;
6020: $udom = $1;
6021: $unum = $2;
6022: $group = $3;
6023: $file_name = $3.'/'.$4;
6024: }
6025: if (wantarray) {
6026: return ($type,$udom,$unum,$file_name,$group);
6027: }
6028: return $type;
6029: }
6030:
6031: sub is_portfolio_url {
6032: my ($url) = @_;
6033: return scalar(&parse_portfolio_url($url));
6034: }
6035:
6036: sub is_portfolio_file {
6037: my ($file) = @_;
6038: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6039: return 1;
6040: }
6041: return;
6042: }
6043:
6044: sub usertools_access {
6045: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6046: my ($access,%tools);
6047: if ($context eq '') {
6048: $context = 'tools';
6049: }
6050: if ($context eq 'requestcourses') {
6051: %tools = (
6052: official => 1,
6053: unofficial => 1,
6054: community => 1,
6055: );
6056: } elsif ($context eq 'requestauthor') {
6057: %tools = (
6058: requestauthor => 1,
6059: );
6060: } else {
6061: %tools = (
6062: aboutme => 1,
6063: blog => 1,
6064: webdav => 1,
6065: portfolio => 1,
6066: );
6067: }
6068: return if (!defined($tools{$tool}));
6069:
6070: if ((!defined($udom)) || (!defined($uname))) {
6071: $udom = $env{'user.domain'};
6072: $uname = $env{'user.name'};
6073: }
6074:
6075: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6076: if ($action ne 'reload') {
6077: if ($context eq 'requestcourses') {
6078: return $env{'environment.canrequest.'.$tool};
6079: } elsif ($context eq 'requestauthor') {
6080: return $env{'environment.canrequest.author'};
6081: } else {
6082: return $env{'environment.availabletools.'.$tool};
6083: }
6084: }
6085: }
6086:
6087: my ($toolstatus,$inststatus,$envkey);
6088: if ($context eq 'requestauthor') {
6089: $envkey = $context;
6090: } else {
6091: $envkey = $context.'.'.$tool;
6092: }
6093:
6094: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6095: ($action ne 'reload')) {
6096: $toolstatus = $env{'environment.'.$envkey};
6097: $inststatus = $env{'environment.inststatus'};
6098: } else {
6099: if (ref($userenvref) eq 'HASH') {
6100: $toolstatus = $userenvref->{$envkey};
6101: $inststatus = $userenvref->{'inststatus'};
6102: } else {
6103: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6104: $toolstatus = $userenv{$envkey};
6105: $inststatus = $userenv{'inststatus'};
6106: }
6107: }
6108:
6109: if ($toolstatus ne '') {
6110: if ($toolstatus) {
6111: $access = 1;
6112: } else {
6113: $access = 0;
6114: }
6115: return $access;
6116: }
6117:
6118: my ($is_adv,%domdef);
6119: if (ref($is_advref) eq 'HASH') {
6120: $is_adv = $is_advref->{'is_adv'};
6121: } else {
6122: $is_adv = &is_advanced_user($udom,$uname);
6123: }
6124: if (ref($domdefref) eq 'HASH') {
6125: %domdef = %{$domdefref};
6126: } else {
6127: %domdef = &get_domain_defaults($udom);
6128: }
6129: if (ref($domdef{$tool}) eq 'HASH') {
6130: if ($is_adv) {
6131: if ($domdef{$tool}{'_LC_adv'} ne '') {
6132: if ($domdef{$tool}{'_LC_adv'}) {
6133: $access = 1;
6134: } else {
6135: $access = 0;
6136: }
6137: return $access;
6138: }
6139: }
6140: if ($inststatus ne '') {
6141: my ($hasaccess,$hasnoaccess);
6142: foreach my $affiliation (split(/:/,$inststatus)) {
6143: if ($domdef{$tool}{$affiliation} ne '') {
6144: if ($domdef{$tool}{$affiliation}) {
6145: $hasaccess = 1;
6146: } else {
6147: $hasnoaccess = 1;
6148: }
6149: }
6150: }
6151: if ($hasaccess || $hasnoaccess) {
6152: if ($hasaccess) {
6153: $access = 1;
6154: } elsif ($hasnoaccess) {
6155: $access = 0;
6156: }
6157: return $access;
6158: }
6159: } else {
6160: if ($domdef{$tool}{'default'} ne '') {
6161: if ($domdef{$tool}{'default'}) {
6162: $access = 1;
6163: } elsif ($domdef{$tool}{'default'} == 0) {
6164: $access = 0;
6165: }
6166: return $access;
6167: }
6168: }
6169: } else {
6170: if (($context eq 'tools') && ($tool ne 'webdav')) {
6171: $access = 1;
6172: } else {
6173: $access = 0;
6174: }
6175: return $access;
6176: }
6177: }
6178:
6179: sub is_course_owner {
6180: my ($cdom,$cnum,$udom,$uname) = @_;
6181: if (($udom eq '') || ($uname eq '')) {
6182: $udom = $env{'user.domain'};
6183: $uname = $env{'user.name'};
6184: }
6185: unless (($udom eq '') || ($uname eq '')) {
6186: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6187: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6188: return 1;
6189: } else {
6190: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6191: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6192: return 1;
6193: }
6194: }
6195: }
6196: }
6197: return;
6198: }
6199:
6200: sub is_advanced_user {
6201: my ($udom,$uname) = @_;
6202: if ($udom ne '' && $uname ne '') {
6203: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6204: if (wantarray) {
6205: return ($env{'user.adv'},$env{'user.author'});
6206: } else {
6207: return $env{'user.adv'};
6208: }
6209: }
6210: }
6211: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6212: my %allroles;
6213: my ($is_adv,$is_author);
6214: foreach my $role (keys(%roleshash)) {
6215: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6216: my $area = '/'.$tdomain.'/'.$trest;
6217: if ($sec ne '') {
6218: $area .= '/'.$sec;
6219: }
6220: if (($area ne '') && ($trole ne '')) {
6221: my $spec=$trole.'.'.$area;
6222: if ($trole =~ /^cr\//) {
6223: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6224: } elsif ($trole ne 'gr') {
6225: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6226: }
6227: if ($trole eq 'au') {
6228: $is_author = 1;
6229: }
6230: }
6231: }
6232: foreach my $role (keys(%allroles)) {
6233: last if ($is_adv);
6234: foreach my $item (split(/:/,$allroles{$role})) {
6235: if ($item ne '') {
6236: my ($privilege,$restrictions)=split(/&/,$item);
6237: if ($privilege eq 'adv') {
6238: $is_adv = 1;
6239: last;
6240: }
6241: }
6242: }
6243: }
6244: if (wantarray) {
6245: return ($is_adv,$is_author);
6246: }
6247: return $is_adv;
6248: }
6249:
6250: sub check_can_request {
6251: my ($dom,$can_request,$request_domains) = @_;
6252: my $canreq = 0;
6253: my ($types,$typename) = &Apache::loncommon::course_types();
6254: my @options = ('approval','validate','autolimit');
6255: my $optregex = join('|',@options);
6256: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6257: foreach my $type (@{$types}) {
6258: if (&usertools_access($env{'user.name'},
6259: $env{'user.domain'},
6260: $type,undef,'requestcourses')) {
6261: $canreq ++;
6262: if (ref($request_domains) eq 'HASH') {
6263: push(@{$request_domains->{$type}},$env{'user.domain'});
6264: }
6265: if ($dom eq $env{'user.domain'}) {
6266: $can_request->{$type} = 1;
6267: }
6268: }
6269: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6270: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6271: if (@curr > 0) {
6272: foreach my $item (@curr) {
6273: if (ref($request_domains) eq 'HASH') {
6274: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6275: if ($otherdom ne '') {
6276: if (ref($request_domains->{$type}) eq 'ARRAY') {
6277: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6278: push(@{$request_domains->{$type}},$otherdom);
6279: }
6280: } else {
6281: push(@{$request_domains->{$type}},$otherdom);
6282: }
6283: }
6284: }
6285: }
6286: unless($dom eq $env{'user.domain'}) {
6287: $canreq ++;
6288: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6289: $can_request->{$type} = 1;
6290: }
6291: }
6292: }
6293: }
6294: }
6295: }
6296: return $canreq;
6297: }
6298:
6299: # ---------------------------------------------- Custom access rule evaluation
6300:
6301: sub customaccess {
6302: my ($priv,$uri)=@_;
6303: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6304: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6305: $udom = &LONCAPA::clean_domain($udom);
6306: $ucrs = &LONCAPA::clean_username($ucrs);
6307: my $access=0;
6308: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6309: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6310: if ($type eq 'user') {
6311: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6312: my ($tdom,$tuname)=split(m{/},$scope);
6313: if ($tdom) {
6314: if ($tdom ne $env{'user.domain'}) { next; }
6315: }
6316: if ($tuname) {
6317: if ($tuname ne $env{'user.name'}) { next; }
6318: }
6319: $access=($effect eq 'allow');
6320: last;
6321: }
6322: } else {
6323: if ($role) {
6324: if ($role ne $urole) { next; }
6325: }
6326: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6327: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6328: if ($tdom) {
6329: if ($tdom ne $udom) { next; }
6330: }
6331: if ($tcrs) {
6332: if ($tcrs ne $ucrs) { next; }
6333: }
6334: if ($tsec) {
6335: if ($tsec ne $usec) { next; }
6336: }
6337: $access=($effect eq 'allow');
6338: last;
6339: }
6340: if ($realm eq '' && $role eq '') {
6341: $access=($effect eq 'allow');
6342: }
6343: }
6344: }
6345: return $access;
6346: }
6347:
6348: # ------------------------------------------------- Check for a user privilege
6349:
6350: sub allowed {
6351: my ($priv,$uri,$symb,$role)=@_;
6352: my $ver_orguri=$uri;
6353: $uri=&deversion($uri);
6354: my $orguri=$uri;
6355: $uri=&declutter($uri);
6356:
6357: if ($priv eq 'evb') {
6358: # Evade communication block restrictions for specified role in a course
6359: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6360: return $1;
6361: } else {
6362: return;
6363: }
6364: }
6365:
6366: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6367: # Free bre access to adm and meta resources
6368: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6369: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6370: && ($priv eq 'bre')) {
6371: return 'F';
6372: }
6373:
6374: # Free bre access to user's own portfolio contents
6375: my ($space,$domain,$name,@dir)=split('/',$uri);
6376: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6377: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6378: my %setters;
6379: my ($startblock,$endblock) =
6380: &Apache::loncommon::blockcheck(\%setters,'port');
6381: if ($startblock && $endblock) {
6382: return 'B';
6383: } else {
6384: return 'F';
6385: }
6386: }
6387:
6388: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6389: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6390: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6391: if (exists($env{'request.course.id'})) {
6392: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6393: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6394: if (($domain eq $cdom) && ($name eq $cnum)) {
6395: my $courseprivid=$env{'request.course.id'};
6396: $courseprivid=~s/\_/\//;
6397: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6398: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6399: return $1;
6400: } else {
6401: if ($env{'request.course.sec'}) {
6402: $courseprivid.='/'.$env{'request.course.sec'};
6403: }
6404: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6405: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6406: return $2;
6407: }
6408: }
6409: }
6410: }
6411: }
6412:
6413: # Free bre to public access
6414:
6415: if ($priv eq 'bre') {
6416: my $copyright=&metadata($uri,'copyright');
6417: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6418: return 'F';
6419: }
6420: if ($copyright eq 'priv') {
6421: $uri=~/([^\/]+)\/([^\/]+)\//;
6422: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6423: return '';
6424: }
6425: }
6426: if ($copyright eq 'domain') {
6427: $uri=~/([^\/]+)\/([^\/]+)\//;
6428: unless (($env{'user.domain'} eq $1) ||
6429: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6430: return '';
6431: }
6432: }
6433: if ($env{'request.role'}=~ /li\.\//) {
6434: # Library role, so allow browsing of resources in this domain.
6435: return 'F';
6436: }
6437: if ($copyright eq 'custom') {
6438: unless (&customaccess($priv,$uri)) { return ''; }
6439: }
6440: }
6441: # Domain coordinator is trying to create a course
6442: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6443: # uri is the requested domain in this case.
6444: # comparison to 'request.role.domain' shows if the user has selected
6445: # a role of dc for the domain in question.
6446: return 'F' if ($uri eq $env{'request.role.domain'});
6447: }
6448:
6449: my $thisallowed='';
6450: my $statecond=0;
6451: my $courseprivid='';
6452:
6453: my $ownaccess;
6454: # Community Coordinator or Assistant Co-author browsing resource space.
6455: if (($priv eq 'bro') && ($env{'user.author'})) {
6456: if ($uri eq '') {
6457: $ownaccess = 1;
6458: } else {
6459: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6460: my $udom = $env{'user.domain'};
6461: my $uname = $env{'user.name'};
6462: if ($uri =~ m{^\Q$udom\E/?$}) {
6463: $ownaccess = 1;
6464: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6465: unless ($uri =~ m{\.\./}) {
6466: $ownaccess = 1;
6467: }
6468: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6469: my $now = time;
6470: if ($uri =~ m{^([^/]+)/?$}) {
6471: my $adom = $1;
6472: foreach my $key (keys(%env)) {
6473: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6474: my ($start,$end) = split('.',$env{$key});
6475: if (($now >= $start) && (!$end || $end < $now)) {
6476: $ownaccess = 1;
6477: last;
6478: }
6479: }
6480: }
6481: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6482: my $adom = $1;
6483: my $aname = $2;
6484: foreach my $role ('ca','aa') {
6485: if ($env{"user.role.$role./$adom/$aname"}) {
6486: my ($start,$end) =
6487: split('.',$env{"user.role.$role./$adom/$aname"});
6488: if (($now >= $start) && (!$end || $end < $now)) {
6489: $ownaccess = 1;
6490: last;
6491: }
6492: }
6493: }
6494: }
6495: }
6496: }
6497: }
6498: }
6499:
6500: # Course
6501:
6502: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6503: unless (($priv eq 'bro') && (!$ownaccess)) {
6504: $thisallowed.=$1;
6505: }
6506: }
6507:
6508: # Domain
6509:
6510: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6511: =~/\Q$priv\E\&([^\:]*)/) {
6512: unless (($priv eq 'bro') && (!$ownaccess)) {
6513: $thisallowed.=$1;
6514: }
6515: }
6516:
6517: # User who is not author or co-author might still be able to edit
6518: # resource of an author in the domain (e.g., if Domain Coordinator).
6519: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6520: (&allowed('mdc',$env{'request.course.id'}))) {
6521: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6522: $thisallowed.=$1;
6523: }
6524: }
6525:
6526: # Course: uri itself is a course
6527: my $courseuri=$uri;
6528: $courseuri=~s/\_(\d)/\/$1/;
6529: $courseuri=~s/^([^\/])/\/$1/;
6530:
6531: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6532: =~/\Q$priv\E\&([^\:]*)/) {
6533: unless (($priv eq 'bro') && (!$ownaccess)) {
6534: $thisallowed.=$1;
6535: }
6536: }
6537:
6538: # URI is an uploaded document for this course, default permissions don't matter
6539: # not allowing 'edit' access (editupload) to uploaded course docs
6540: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6541: $thisallowed='';
6542: my ($match)=&is_on_map($uri);
6543: if ($match) {
6544: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6545: =~/\Q$priv\E\&([^\:]*)/) {
6546: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6547: if (@blockers > 0) {
6548: $thisallowed = 'B';
6549: } else {
6550: $thisallowed.=$1;
6551: }
6552: }
6553: } else {
6554: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6555: if ($refuri) {
6556: if ($refuri =~ m|^/adm/|) {
6557: $thisallowed='F';
6558: } else {
6559: $refuri=&declutter($refuri);
6560: my ($match) = &is_on_map($refuri);
6561: if ($match) {
6562: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6563: if (@blockers > 0) {
6564: $thisallowed = 'B';
6565: } else {
6566: $thisallowed='F';
6567: }
6568: }
6569: }
6570: }
6571: }
6572: }
6573:
6574: if ($priv eq 'bre'
6575: && $thisallowed ne 'F'
6576: && $thisallowed ne '2'
6577: && &is_portfolio_url($uri)) {
6578: $thisallowed = &portfolio_access($uri);
6579: }
6580:
6581: # Full access at system, domain or course-wide level? Exit.
6582: if ($thisallowed=~/F/) {
6583: return 'F';
6584: }
6585:
6586: # If this is generating or modifying users, exit with special codes
6587:
6588: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6589: if (($priv eq 'cca') || ($priv eq 'caa')) {
6590: my ($audom,$auname)=split('/',$uri);
6591: # no author name given, so this just checks on the general right to make a co-author in this domain
6592: unless ($auname) { return $thisallowed; }
6593: # an author name is given, so we are about to actually make a co-author for a certain account
6594: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6595: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6596: ($audom ne $env{'request.role.domain'}))) { return ''; }
6597: }
6598: return $thisallowed;
6599: }
6600: #
6601: # Gathered so far: system, domain and course wide privileges
6602: #
6603: # Course: See if uri or referer is an individual resource that is part of
6604: # the course
6605:
6606: if ($env{'request.course.id'}) {
6607:
6608: $courseprivid=$env{'request.course.id'};
6609: if ($env{'request.course.sec'}) {
6610: $courseprivid.='/'.$env{'request.course.sec'};
6611: }
6612: $courseprivid=~s/\_/\//;
6613: my $checkreferer=1;
6614: my ($match,$cond)=&is_on_map($uri);
6615: if ($match) {
6616: $statecond=$cond;
6617: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6618: =~/\Q$priv\E\&([^\:]*)/) {
6619: my $value = $1;
6620: if ($priv eq 'bre') {
6621: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6622: if (@blockers > 0) {
6623: $thisallowed = 'B';
6624: } else {
6625: $thisallowed.=$value;
6626: }
6627: } else {
6628: $thisallowed.=$value;
6629: }
6630: $checkreferer=0;
6631: }
6632: }
6633:
6634: if ($checkreferer) {
6635: my $refuri=$env{'httpref.'.$orguri};
6636: unless ($refuri) {
6637: foreach my $key (keys(%env)) {
6638: if ($key=~/^httpref\..*\*/) {
6639: my $pattern=$key;
6640: $pattern=~s/^httpref\.\/res\///;
6641: $pattern=~s/\*/\[\^\/\]\+/g;
6642: $pattern=~s/\//\\\//g;
6643: if ($orguri=~/$pattern/) {
6644: $refuri=$env{$key};
6645: }
6646: }
6647: }
6648: }
6649:
6650: if ($refuri) {
6651: $refuri=&declutter($refuri);
6652: my ($match,$cond)=&is_on_map($refuri);
6653: if ($match) {
6654: my $refstatecond=$cond;
6655: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6656: =~/\Q$priv\E\&([^\:]*)/) {
6657: my $value = $1;
6658: if ($priv eq 'bre') {
6659: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6660: if (@blockers > 0) {
6661: $thisallowed = 'B';
6662: } else {
6663: $thisallowed.=$value;
6664: }
6665: } else {
6666: $thisallowed.=$value;
6667: }
6668: $uri=$refuri;
6669: $statecond=$refstatecond;
6670: }
6671: }
6672: }
6673: }
6674: }
6675:
6676: #
6677: # Gathered now: all privileges that could apply, and condition number
6678: #
6679: #
6680: # Full or no access?
6681: #
6682:
6683: if ($thisallowed=~/F/) {
6684: return 'F';
6685: }
6686:
6687: unless ($thisallowed) {
6688: return '';
6689: }
6690:
6691: # Restrictions exist, deal with them
6692: #
6693: # C:according to course preferences
6694: # R:according to resource settings
6695: # L:unless locked
6696: # X:according to user session state
6697: #
6698:
6699: # Possibly locked functionality, check all courses
6700: # Locks might take effect only after 10 minutes cache expiration for other
6701: # courses, and 2 minutes for current course
6702:
6703: my $envkey;
6704: if ($thisallowed=~/L/) {
6705: foreach $envkey (keys(%env)) {
6706: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6707: my $courseid=$2;
6708: my $roleid=$1.'.'.$2;
6709: $courseid=~s/^\///;
6710: my $expiretime=600;
6711: if ($env{'request.role'} eq $roleid) {
6712: $expiretime=120;
6713: }
6714: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6715: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6716: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6717: &coursedescription($courseid,{'freshen_cache' => 1});
6718: }
6719: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6720: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6721: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6722: &log($env{'user.domain'},$env{'user.name'},
6723: $env{'user.home'},
6724: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6725: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6726: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6727: return '';
6728: }
6729: }
6730: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6731: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6732: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6733: &log($env{'user.domain'},$env{'user.name'},
6734: $env{'user.home'},
6735: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6736: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6737: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6738: return '';
6739: }
6740: }
6741: }
6742: }
6743: }
6744:
6745: #
6746: # Rest of the restrictions depend on selected course
6747: #
6748:
6749: unless ($env{'request.course.id'}) {
6750: if ($thisallowed eq 'A') {
6751: return 'A';
6752: } elsif ($thisallowed eq 'B') {
6753: return 'B';
6754: } else {
6755: return '1';
6756: }
6757: }
6758:
6759: #
6760: # Now user is definitely in a course
6761: #
6762:
6763:
6764: # Course preferences
6765:
6766: if ($thisallowed=~/C/) {
6767: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6768: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6769: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6770: =~/\Q$rolecode\E/) {
6771: if (($priv ne 'pch') && ($priv ne 'plc')) {
6772: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6773: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6774: $env{'request.course.id'});
6775: }
6776: return '';
6777: }
6778:
6779: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6780: =~/\Q$unamedom\E/) {
6781: if (($priv ne 'pch') && ($priv ne 'plc')) {
6782: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6783: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6784: $env{'request.course.id'});
6785: }
6786: return '';
6787: }
6788: }
6789:
6790: # Resource preferences
6791:
6792: if ($thisallowed=~/R/) {
6793: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6794: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6795: if (($priv ne 'pch') && ($priv ne 'plc')) {
6796: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6797: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6798: }
6799: return '';
6800: }
6801: }
6802:
6803: # Restricted by state or randomout?
6804:
6805: if ($thisallowed=~/X/) {
6806: if ($env{'acc.randomout'}) {
6807: if (!$symb) { $symb=&symbread($uri,1); }
6808: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6809: return '';
6810: }
6811: }
6812: if (&condval($statecond)) {
6813: return '2';
6814: } else {
6815: return '';
6816: }
6817: }
6818:
6819: if ($thisallowed eq 'A') {
6820: return 'A';
6821: } elsif ($thisallowed eq 'B') {
6822: return 'B';
6823: }
6824: return 'F';
6825: }
6826:
6827: # ------------------------------------------- Check construction space access
6828:
6829: sub constructaccess {
6830: my ($url,$setpriv)=@_;
6831:
6832: # We do not allow editing of previous versions of files
6833: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
6834:
6835: # Get username and domain from URL
6836: my ($ownername,$ownerdomain,$ownerhome);
6837:
6838: ($ownerdomain,$ownername) =
6839: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
6840:
6841: # The URL does not really point to any authorspace, forget it
6842: unless (($ownername) && ($ownerdomain)) { return ''; }
6843:
6844: # Now we need to see if the user has access to the authorspace of
6845: # $ownername at $ownerdomain
6846:
6847: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
6848: # Real author for this?
6849: $ownerhome = $env{'user.home'};
6850: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
6851: return ($ownername,$ownerdomain,$ownerhome);
6852: }
6853: } else {
6854: # Co-author for this?
6855: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
6856: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
6857: $ownerhome = &homeserver($ownername,$ownerdomain);
6858: return ($ownername,$ownerdomain,$ownerhome);
6859: }
6860: }
6861:
6862: # We don't have any access right now. If we are not possibly going to do anything about this,
6863: # we might as well leave
6864: unless ($setpriv) { return ''; }
6865:
6866: # Backdoor access?
6867: my $allowed=&allowed('eco',$ownerdomain);
6868: # Nope
6869: unless ($allowed) { return ''; }
6870: # Looks like we may have access, but could be locked by the owner of the construction space
6871: if ($allowed eq 'U') {
6872: my %blocked=&get('environment',['domcoord.author'],
6873: $ownerdomain,$ownername);
6874: # Is blocked by owner
6875: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
6876: }
6877: if (($allowed eq 'F') || ($allowed eq 'U')) {
6878: # Grant temporary access
6879: my $then=$env{'user.login.time'};
6880: my $update==$env{'user.update.time'};
6881: if (!$update) { $update = $then; }
6882: my $refresh=$env{'user.refresh.time'};
6883: if (!$refresh) { $refresh = $update; }
6884: my $now = time;
6885: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
6886: $now,'ca','constructaccess');
6887: $ownerhome = &homeserver($ownername,$ownerdomain);
6888: return($ownername,$ownerdomain,$ownerhome);
6889: }
6890: # No business here
6891: return '';
6892: }
6893:
6894: sub get_comm_blocks {
6895: my ($cdom,$cnum) = @_;
6896: if ($cdom eq '' || $cnum eq '') {
6897: return unless ($env{'request.course.id'});
6898: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6899: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6900: }
6901: my %commblocks;
6902: my $hashid=$cdom.'_'.$cnum;
6903: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6904: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6905: %commblocks = %{$blocksref};
6906: } else {
6907: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6908: my $cachetime = 600;
6909: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6910: }
6911: return %commblocks;
6912: }
6913:
6914: sub has_comm_blocking {
6915: my ($priv,$symb,$uri,$blocks) = @_;
6916: return unless ($env{'request.course.id'});
6917: return unless ($priv eq 'bre');
6918: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6919: my %commblocks;
6920: if (ref($blocks) eq 'HASH') {
6921: %commblocks = %{$blocks};
6922: } else {
6923: %commblocks = &get_comm_blocks();
6924: }
6925: return unless (keys(%commblocks) > 0);
6926: if (!$symb) { $symb=&symbread($uri,1); }
6927: my ($map,$resid,undef)=&decode_symb($symb);
6928: my %tocheck = (
6929: maps => $map,
6930: resources => $symb,
6931: );
6932: my @blockers;
6933: my $now = time;
6934: my $navmap = Apache::lonnavmaps::navmap->new();
6935: foreach my $block (keys(%commblocks)) {
6936: if ($block =~ /^(\d+)____(\d+)$/) {
6937: my ($start,$end) = ($1,$2);
6938: if ($start <= $now && $end >= $now) {
6939: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6940: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6941: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6942: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6943: unless (grep(/^\Q$block\E$/,@blockers)) {
6944: push(@blockers,$block);
6945: }
6946: }
6947: }
6948: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6949: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6950: unless (grep(/^\Q$block\E$/,@blockers)) {
6951: push(@blockers,$block);
6952: }
6953: }
6954: }
6955: }
6956: }
6957: }
6958: } elsif ($block =~ /^firstaccess____(.+)$/) {
6959: my $item = $1;
6960: my @to_test;
6961: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6962: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6963: my $check_interval;
6964: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6965: my @interval;
6966: my $type = 'map';
6967: if ($item eq 'course') {
6968: $type = 'course';
6969: @interval=&EXT("resource.0.interval");
6970: } else {
6971: if ($item =~ /___\d+___/) {
6972: $type = 'resource';
6973: @interval=&EXT("resource.0.interval",$item);
6974: if (ref($navmap)) {
6975: my $res = $navmap->getBySymb($item);
6976: push(@to_test,$res);
6977: }
6978: } else {
6979: my $mapsymb = &symbread($item,1);
6980: if ($mapsymb) {
6981: if (ref($navmap)) {
6982: my $mapres = $navmap->getBySymb($mapsymb);
6983: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6984: foreach my $res (@to_test) {
6985: my $symb = $res->symb();
6986: next if ($symb eq $mapsymb);
6987: if ($symb ne '') {
6988: @interval=&EXT("resource.0.interval",$symb);
6989: last;
6990: }
6991: }
6992: }
6993: }
6994: }
6995: }
6996: if ($interval[0] =~ /\d+/) {
6997: my $first_access;
6998: if ($type eq 'resource') {
6999: $first_access=&get_first_access($interval[1],$item);
7000: } elsif ($type eq 'map') {
7001: $first_access=&get_first_access($interval[1],undef,$item);
7002: } else {
7003: $first_access=&get_first_access($interval[1]);
7004: }
7005: if ($first_access) {
7006: my $timesup = $first_access+$interval[0];
7007: if ($timesup > $now) {
7008: foreach my $res (@to_test) {
7009: if ($res->is_problem()) {
7010: if ($res->completable()) {
7011: unless (grep(/^\Q$block\E$/,@blockers)) {
7012: push(@blockers,$block);
7013: }
7014: last;
7015: }
7016: }
7017: }
7018: }
7019: }
7020: }
7021: }
7022: }
7023: }
7024: }
7025: }
7026: return @blockers;
7027: }
7028:
7029: sub check_docs_block {
7030: my ($docsblock,$tocheck) =@_;
7031: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
7032: return;
7033: }
7034: if (ref($docsblock->{'maps'}) eq 'HASH') {
7035: if ($tocheck->{'maps'}) {
7036: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
7037: return 1;
7038: }
7039: }
7040: }
7041: if (ref($docsblock->{'resources'}) eq 'HASH') {
7042: if ($tocheck->{'resources'}) {
7043: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
7044: return 1;
7045: }
7046: }
7047: }
7048: return;
7049: }
7050:
7051: #
7052: # Removes the versino from a URI and
7053: # splits it in to its filename and path to the filename.
7054: # Seems like File::Basename could have done this more clearly.
7055: # Parameters:
7056: # $uri - input URI
7057: # Returns:
7058: # Two element list consisting of
7059: # $pathname - the URI up to and excluding the trailing /
7060: # $filename - The part of the URI following the last /
7061: # NOTE:
7062: # Another realization of this is simply:
7063: # use File::Basename;
7064: # ...
7065: # $uri = shift;
7066: # $filename = basename($uri);
7067: # $path = dirname($uri);
7068: # return ($filename, $path);
7069: #
7070: # The implementation below is probably faster however.
7071: #
7072: sub split_uri_for_cond {
7073: my $uri=&deversion(&declutter(shift));
7074: my @uriparts=split(/\//,$uri);
7075: my $filename=pop(@uriparts);
7076: my $pathname=join('/',@uriparts);
7077: return ($pathname,$filename);
7078: }
7079: # --------------------------------------------------- Is a resource on the map?
7080:
7081: sub is_on_map {
7082: my ($pathname,$filename) = &split_uri_for_cond(shift);
7083: #Trying to find the conditional for the file
7084: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7085: /\&\Q$filename\E\:([\d\|]+)\&/);
7086: if ($match) {
7087: return (1,$1);
7088: } else {
7089: return (0,0);
7090: }
7091: }
7092:
7093: # --------------------------------------------------------- Get symb from alias
7094:
7095: sub get_symb_from_alias {
7096: my $symb=shift;
7097: my ($map,$resid,$url)=&decode_symb($symb);
7098: # Already is a symb
7099: if ($url) { return $symb; }
7100: # Must be an alias
7101: my $aliassymb='';
7102: my %bighash;
7103: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7104: &GDBM_READER(),0640)) {
7105: my $rid=$bighash{'mapalias_'.$symb};
7106: if ($rid) {
7107: my ($mapid,$resid)=split(/\./,$rid);
7108: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7109: $resid,$bighash{'src_'.$rid});
7110: }
7111: untie %bighash;
7112: }
7113: return $aliassymb;
7114: }
7115:
7116: # ----------------------------------------------------------------- Define Role
7117:
7118: sub definerole {
7119: if (allowed('mcr','/')) {
7120: my ($rolename,$sysrole,$domrole,$courole)=@_;
7121: foreach my $role (split(':',$sysrole)) {
7122: my ($crole,$cqual)=split(/\&/,$role);
7123: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7124: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7125: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7126: return "refused:s:$crole&$cqual";
7127: }
7128: }
7129: }
7130: foreach my $role (split(':',$domrole)) {
7131: my ($crole,$cqual)=split(/\&/,$role);
7132: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7133: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7134: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7135: return "refused:d:$crole&$cqual";
7136: }
7137: }
7138: }
7139: foreach my $role (split(':',$courole)) {
7140: my ($crole,$cqual)=split(/\&/,$role);
7141: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7142: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7143: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7144: return "refused:c:$crole&$cqual";
7145: }
7146: }
7147: }
7148: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7149: "$env{'user.domain'}:$env{'user.name'}:".
7150: "rolesdef_$rolename=".
7151: escape($sysrole.'_'.$domrole.'_'.$courole);
7152: return reply($command,$env{'user.home'});
7153: } else {
7154: return 'refused';
7155: }
7156: }
7157:
7158: # ---------------- Make a metadata query against the network of library servers
7159:
7160: sub metadata_query {
7161: my ($query,$custom,$customshow,$server_array)=@_;
7162: my %rhash;
7163: my %libserv = &all_library();
7164: my @server_list = (defined($server_array) ? @$server_array
7165: : keys(%libserv) );
7166: for my $server (@server_list) {
7167: unless ($custom or $customshow) {
7168: my $reply=&reply("querysend:".&escape($query),$server);
7169: $rhash{$server}=$reply;
7170: }
7171: else {
7172: my $reply=&reply("querysend:".&escape($query).':'.
7173: &escape($custom).':'.&escape($customshow),
7174: $server);
7175: $rhash{$server}=$reply;
7176: }
7177: }
7178: return \%rhash;
7179: }
7180:
7181: # ----------------------------------------- Send log queries and wait for reply
7182:
7183: sub log_query {
7184: my ($uname,$udom,$query,%filters)=@_;
7185: my $uhome=&homeserver($uname,$udom);
7186: if ($uhome eq 'no_host') { return 'error: no_host'; }
7187: my $uhost=&hostname($uhome);
7188: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7189: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7190: $uhome);
7191: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7192: return get_query_reply($queryid);
7193: }
7194:
7195: # -------------------------- Update MySQL table for portfolio file
7196:
7197: sub update_portfolio_table {
7198: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7199: if ($group ne '') {
7200: $file_name =~s /^\Q$group\E//;
7201: }
7202: my $homeserver = &homeserver($uname,$udom);
7203: my $queryid=
7204: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7205: ':'.&escape($file_name).':'.$action,$homeserver);
7206: my $reply = &get_query_reply($queryid);
7207: return $reply;
7208: }
7209:
7210: # -------------------------- Update MySQL allusers table
7211:
7212: sub update_allusers_table {
7213: my ($uname,$udom,$names) = @_;
7214: my $homeserver = &homeserver($uname,$udom);
7215: my $queryid=
7216: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7217: 'lastname='.&escape($names->{'lastname'}).'%%'.
7218: 'firstname='.&escape($names->{'firstname'}).'%%'.
7219: 'middlename='.&escape($names->{'middlename'}).'%%'.
7220: 'generation='.&escape($names->{'generation'}).'%%'.
7221: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7222: 'id='.&escape($names->{'id'}),$homeserver);
7223: return;
7224: }
7225:
7226: # ------- Request retrieval of institutional classlists for course(s)
7227:
7228: sub fetch_enrollment_query {
7229: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7230: my $homeserver;
7231: my $maxtries = 1;
7232: if ($context eq 'automated') {
7233: $homeserver = $perlvar{'lonHostID'};
7234: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7235: } else {
7236: $homeserver = &homeserver($cnum,$dom);
7237: }
7238: my $host=&hostname($homeserver);
7239: my $cmd = '';
7240: foreach my $affiliate (keys(%{$affiliatesref})) {
7241: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7242: }
7243: $cmd =~ s/%%$//;
7244: $cmd = &escape($cmd);
7245: my $query = 'fetchenrollment';
7246: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7247: unless ($queryid=~/^\Q$host\E\_/) {
7248: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7249: return 'error: '.$queryid;
7250: }
7251: my $reply = &get_query_reply($queryid);
7252: my $tries = 1;
7253: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7254: $reply = &get_query_reply($queryid);
7255: $tries ++;
7256: }
7257: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7258: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7259: } else {
7260: my @responses = split(/:/,$reply);
7261: if ($homeserver eq $perlvar{'lonHostID'}) {
7262: foreach my $line (@responses) {
7263: my ($key,$value) = split(/=/,$line,2);
7264: $$replyref{$key} = $value;
7265: }
7266: } else {
7267: my $pathname = LONCAPA::tempdir();
7268: foreach my $line (@responses) {
7269: my ($key,$value) = split(/=/,$line);
7270: $$replyref{$key} = $value;
7271: if ($value > 0) {
7272: foreach my $item (@{$$affiliatesref{$key}}) {
7273: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7274: my $destname = $pathname.'/'.$filename;
7275: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7276: if ($xml_classlist =~ /^error/) {
7277: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7278: } else {
7279: if ( open(FILE,">$destname") ) {
7280: print FILE &unescape($xml_classlist);
7281: close(FILE);
7282: } else {
7283: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7284: }
7285: }
7286: }
7287: }
7288: }
7289: }
7290: return 'ok';
7291: }
7292: return 'error';
7293: }
7294:
7295: sub get_query_reply {
7296: my $queryid=shift;
7297: my $replyfile=LONCAPA::tempdir().$queryid;
7298: my $reply='';
7299: for (1..100) {
7300: sleep 2;
7301: if (-e $replyfile.'.end') {
7302: if (open(my $fh,$replyfile)) {
7303: $reply = join('',<$fh>);
7304: close($fh);
7305: } else { return 'error: reply_file_error'; }
7306: return &unescape($reply);
7307: }
7308: }
7309: return 'timeout:'.$queryid;
7310: }
7311:
7312: sub courselog_query {
7313: #
7314: # possible filters:
7315: # url: url or symb
7316: # username
7317: # domain
7318: # action: view, submit, grade
7319: # start: timestamp
7320: # end: timestamp
7321: #
7322: my (%filters)=@_;
7323: unless ($env{'request.course.id'}) { return 'no_course'; }
7324: if ($filters{'url'}) {
7325: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7326: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7327: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7328: }
7329: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7330: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7331: return &log_query($cname,$cdom,'courselog',%filters);
7332: }
7333:
7334: sub userlog_query {
7335: #
7336: # possible filters:
7337: # action: log check role
7338: # start: timestamp
7339: # end: timestamp
7340: #
7341: my ($uname,$udom,%filters)=@_;
7342: return &log_query($uname,$udom,'userlog',%filters);
7343: }
7344:
7345: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7346:
7347: sub auto_run {
7348: my ($cnum,$cdom) = @_;
7349: my $response = 0;
7350: my $settings;
7351: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7352: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7353: $settings = $domconfig{'autoenroll'};
7354: if ($settings->{'run'} eq '1') {
7355: $response = 1;
7356: }
7357: } else {
7358: my $homeserver;
7359: if (&is_course($cdom,$cnum)) {
7360: $homeserver = &homeserver($cnum,$cdom);
7361: } else {
7362: $homeserver = &domain($cdom,'primary');
7363: }
7364: if ($homeserver ne 'no_host') {
7365: $response = &reply('autorun:'.$cdom,$homeserver);
7366: }
7367: }
7368: return $response;
7369: }
7370:
7371: sub auto_get_sections {
7372: my ($cnum,$cdom,$inst_coursecode) = @_;
7373: my $homeserver;
7374: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7375: $homeserver = &homeserver($cnum,$cdom);
7376: }
7377: if (!defined($homeserver)) {
7378: if ($cdom =~ /^$match_domain$/) {
7379: $homeserver = &domain($cdom,'primary');
7380: }
7381: }
7382: my @secs;
7383: if (defined($homeserver)) {
7384: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7385: unless ($response eq 'refused') {
7386: @secs = split(/:/,$response);
7387: }
7388: }
7389: return @secs;
7390: }
7391:
7392: sub auto_new_course {
7393: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7394: my $homeserver = &homeserver($cnum,$cdom);
7395: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7396: return $response;
7397: }
7398:
7399: sub auto_validate_courseID {
7400: my ($cnum,$cdom,$inst_course_id) = @_;
7401: my $homeserver = &homeserver($cnum,$cdom);
7402: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7403: return $response;
7404: }
7405:
7406: sub auto_validate_instcode {
7407: my ($cnum,$cdom,$instcode,$owner) = @_;
7408: my ($homeserver,$response);
7409: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7410: $homeserver = &homeserver($cnum,$cdom);
7411: }
7412: if (!defined($homeserver)) {
7413: if ($cdom =~ /^$match_domain$/) {
7414: $homeserver = &domain($cdom,'primary');
7415: }
7416: }
7417: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7418: &escape($instcode).':'.&escape($owner),$homeserver));
7419: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
7420: return ($outcome,$description);
7421: }
7422:
7423: sub auto_create_password {
7424: my ($cnum,$cdom,$authparam,$udom) = @_;
7425: my ($homeserver,$response);
7426: my $create_passwd = 0;
7427: my $authchk = '';
7428: if ($udom =~ /^$match_domain$/) {
7429: $homeserver = &domain($udom,'primary');
7430: }
7431: if ($homeserver eq '') {
7432: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7433: $homeserver = &homeserver($cnum,$cdom);
7434: }
7435: }
7436: if ($homeserver eq '') {
7437: $authchk = 'nodomain';
7438: } else {
7439: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7440: if ($response eq 'refused') {
7441: $authchk = 'refused';
7442: } else {
7443: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7444: }
7445: }
7446: return ($authparam,$create_passwd,$authchk);
7447: }
7448:
7449: sub auto_photo_permission {
7450: my ($cnum,$cdom,$students) = @_;
7451: my $homeserver = &homeserver($cnum,$cdom);
7452: my ($outcome,$perm_reqd,$conditions) =
7453: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7454: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7455: return (undef,undef);
7456: }
7457: return ($outcome,$perm_reqd,$conditions);
7458: }
7459:
7460: sub auto_checkphotos {
7461: my ($uname,$udom,$pid) = @_;
7462: my $homeserver = &homeserver($uname,$udom);
7463: my ($result,$resulttype);
7464: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7465: &escape($uname).':'.&escape($pid),
7466: $homeserver));
7467: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7468: return (undef,undef);
7469: }
7470: if ($outcome) {
7471: ($result,$resulttype) = split(/:/,$outcome);
7472: }
7473: return ($result,$resulttype);
7474: }
7475:
7476: sub auto_photochoice {
7477: my ($cnum,$cdom) = @_;
7478: my $homeserver = &homeserver($cnum,$cdom);
7479: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7480: &escape($cdom),
7481: $homeserver)));
7482: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7483: return (undef,undef);
7484: }
7485: return ($update,$comment);
7486: }
7487:
7488: sub auto_photoupdate {
7489: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7490: my $homeserver = &homeserver($cnum,$dom);
7491: my $host=&hostname($homeserver);
7492: my $cmd = '';
7493: my $maxtries = 1;
7494: foreach my $affiliate (keys(%{$affiliatesref})) {
7495: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7496: }
7497: $cmd =~ s/%%$//;
7498: $cmd = &escape($cmd);
7499: my $query = 'institutionalphotos';
7500: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7501: unless ($queryid=~/^\Q$host\E\_/) {
7502: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7503: return 'error: '.$queryid;
7504: }
7505: my $reply = &get_query_reply($queryid);
7506: my $tries = 1;
7507: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7508: $reply = &get_query_reply($queryid);
7509: $tries ++;
7510: }
7511: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7512: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7513: } else {
7514: my @responses = split(/:/,$reply);
7515: my $outcome = shift(@responses);
7516: foreach my $item (@responses) {
7517: my ($key,$value) = split(/=/,$item);
7518: $$photo{$key} = $value;
7519: }
7520: return $outcome;
7521: }
7522: return 'error';
7523: }
7524:
7525: sub auto_instcode_format {
7526: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7527: $cat_order) = @_;
7528: my $courses = '';
7529: my @homeservers;
7530: if ($caller eq 'global') {
7531: my %servers = &get_servers($codedom,'library');
7532: foreach my $tryserver (keys(%servers)) {
7533: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7534: push(@homeservers,$tryserver);
7535: }
7536: }
7537: } elsif ($caller eq 'requests') {
7538: if ($codedom =~ /^$match_domain$/) {
7539: my $chome = &domain($codedom,'primary');
7540: unless ($chome eq 'no_host') {
7541: push(@homeservers,$chome);
7542: }
7543: }
7544: } else {
7545: push(@homeservers,&homeserver($caller,$codedom));
7546: }
7547: foreach my $code (keys(%{$instcodes})) {
7548: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7549: }
7550: chop($courses);
7551: my $ok_response = 0;
7552: my $response;
7553: while (@homeservers > 0 && $ok_response == 0) {
7554: my $server = shift(@homeservers);
7555: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7556: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7557: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7558: split(/:/,$response);
7559: %{$codes} = (%{$codes},&str2hash($codes_str));
7560: push(@{$codetitles},&str2array($codetitles_str));
7561: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7562: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7563: $ok_response = 1;
7564: }
7565: }
7566: if ($ok_response) {
7567: return 'ok';
7568: } else {
7569: return $response;
7570: }
7571: }
7572:
7573: sub auto_instcode_defaults {
7574: my ($domain,$returnhash,$code_order) = @_;
7575: my @homeservers;
7576:
7577: my %servers = &get_servers($domain,'library');
7578: foreach my $tryserver (keys(%servers)) {
7579: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7580: push(@homeservers,$tryserver);
7581: }
7582: }
7583:
7584: my $response;
7585: foreach my $server (@homeservers) {
7586: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7587: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7588:
7589: foreach my $pair (split(/\&/,$response)) {
7590: my ($name,$value)=split(/\=/,$pair);
7591: if ($name eq 'code_order') {
7592: @{$code_order} = split(/\&/,&unescape($value));
7593: } else {
7594: $returnhash->{&unescape($name)}=&unescape($value);
7595: }
7596: }
7597: return 'ok';
7598: }
7599:
7600: return $response;
7601: }
7602:
7603: sub auto_possible_instcodes {
7604: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7605: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7606: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7607: return;
7608: }
7609: my (@homeservers,$uhome);
7610: if (defined(&domain($domain,'primary'))) {
7611: $uhome=&domain($domain,'primary');
7612: push(@homeservers,&domain($domain,'primary'));
7613: } else {
7614: my %servers = &get_servers($domain,'library');
7615: foreach my $tryserver (keys(%servers)) {
7616: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7617: push(@homeservers,$tryserver);
7618: }
7619: }
7620: }
7621: my $response;
7622: foreach my $server (@homeservers) {
7623: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7624: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7625: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7626: split(':',$response);
7627: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7628: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7629: foreach my $item (split('&',$cat_title)) {
7630: my ($name,$value)=split('=',$item);
7631: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7632: }
7633: foreach my $item (split('&',$cat_order)) {
7634: my ($name,$value)=split('=',$item);
7635: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7636: }
7637: return 'ok';
7638: }
7639: return $response;
7640: }
7641:
7642: sub auto_courserequest_checks {
7643: my ($dom) = @_;
7644: my ($homeserver,%validations);
7645: if ($dom =~ /^$match_domain$/) {
7646: $homeserver = &domain($dom,'primary');
7647: }
7648: unless ($homeserver eq 'no_host') {
7649: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7650: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7651: my @items = split(/&/,$response);
7652: foreach my $item (@items) {
7653: my ($key,$value) = split('=',$item);
7654: $validations{&unescape($key)} = &thaw_unescape($value);
7655: }
7656: }
7657: }
7658: return %validations;
7659: }
7660:
7661: sub auto_courserequest_validation {
7662: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7663: my ($homeserver,$response);
7664: if ($dom =~ /^$match_domain$/) {
7665: $homeserver = &domain($dom,'primary');
7666: }
7667: unless ($homeserver eq 'no_host') {
7668:
7669: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7670: ':'.&escape($crstype).':'.&escape($inststatuslist).
7671: ':'.&escape($instcode).':'.&escape($instseclist),
7672: $homeserver));
7673: }
7674: return $response;
7675: }
7676:
7677: sub auto_validate_class_sec {
7678: my ($cdom,$cnum,$owners,$inst_class) = @_;
7679: my $homeserver = &homeserver($cnum,$cdom);
7680: my $ownerlist;
7681: if (ref($owners) eq 'ARRAY') {
7682: $ownerlist = join(',',@{$owners});
7683: } else {
7684: $ownerlist = $owners;
7685: }
7686: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7687: &escape($ownerlist).':'.$cdom,$homeserver);
7688: return $response;
7689: }
7690:
7691: # ------------------------------------------------------- Course Group routines
7692:
7693: sub get_coursegroups {
7694: my ($cdom,$cnum,$group,$namespace) = @_;
7695: return(&dump($namespace,$cdom,$cnum,$group));
7696: }
7697:
7698: sub modify_coursegroup {
7699: my ($cdom,$cnum,$groupsettings) = @_;
7700: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7701: }
7702:
7703: sub toggle_coursegroup_status {
7704: my ($cdom,$cnum,$group,$action) = @_;
7705: my ($from_namespace,$to_namespace);
7706: if ($action eq 'delete') {
7707: $from_namespace = 'coursegroups';
7708: $to_namespace = 'deleted_groups';
7709: } else {
7710: $from_namespace = 'deleted_groups';
7711: $to_namespace = 'coursegroups';
7712: }
7713: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7714: if (my $tmp = &error(%curr_group)) {
7715: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7716: return ('read error',$tmp);
7717: } else {
7718: my %savedsettings = %curr_group;
7719: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7720: my $deloutcome;
7721: if ($result eq 'ok') {
7722: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7723: } else {
7724: return ('write error',$result);
7725: }
7726: if ($deloutcome eq 'ok') {
7727: return 'ok';
7728: } else {
7729: return ('delete error',$deloutcome);
7730: }
7731: }
7732: }
7733:
7734: sub modify_group_roles {
7735: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7736: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7737: my $role = 'gr/'.&escape($userprivs);
7738: my ($uname,$udom) = split(/:/,$user);
7739: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7740: if ($result eq 'ok') {
7741: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7742: }
7743: return $result;
7744: }
7745:
7746: sub modify_coursegroup_membership {
7747: my ($cdom,$cnum,$membership) = @_;
7748: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7749: return $result;
7750: }
7751:
7752: sub get_active_groups {
7753: my ($udom,$uname,$cdom,$cnum) = @_;
7754: my $now = time;
7755: my %groups = ();
7756: foreach my $key (keys(%env)) {
7757: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7758: my ($start,$end) = split(/\./,$env{$key});
7759: if (($end!=0) && ($end<$now)) { next; }
7760: if (($start!=0) && ($start>$now)) { next; }
7761: if ($1 eq $cdom && $2 eq $cnum) {
7762: $groups{$3} = $env{$key} ;
7763: }
7764: }
7765: }
7766: return %groups;
7767: }
7768:
7769: sub get_group_membership {
7770: my ($cdom,$cnum,$group) = @_;
7771: return(&dump('groupmembership',$cdom,$cnum,$group));
7772: }
7773:
7774: sub get_users_groups {
7775: my ($udom,$uname,$courseid) = @_;
7776: my @usersgroups;
7777: my $cachetime=1800;
7778:
7779: my $hashid="$udom:$uname:$courseid";
7780: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7781: if (defined($cached)) {
7782: @usersgroups = split(/:/,$grouplist);
7783: } else {
7784: $grouplist = '';
7785: my $courseurl = &courseid_to_courseurl($courseid);
7786: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7787: my $access_end = $env{'course.'.$courseid.
7788: '.default_enrollment_end_date'};
7789: my $now = time;
7790: foreach my $key (keys(%roleshash)) {
7791: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7792: my $group = $1;
7793: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7794: my $start = $2;
7795: my $end = $1;
7796: if ($start == -1) { next; } # deleted from group
7797: if (($start!=0) && ($start>$now)) { next; }
7798: if (($end!=0) && ($end<$now)) {
7799: if ($access_end && $access_end < $now) {
7800: if ($access_end - $end < 86400) {
7801: push(@usersgroups,$group);
7802: }
7803: }
7804: next;
7805: }
7806: push(@usersgroups,$group);
7807: }
7808: }
7809: }
7810: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7811: $grouplist = join(':',@usersgroups);
7812: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7813: }
7814: return @usersgroups;
7815: }
7816:
7817: sub devalidate_getgroups_cache {
7818: my ($udom,$uname,$cdom,$cnum)=@_;
7819: my $courseid = $cdom.'_'.$cnum;
7820:
7821: my $hashid="$udom:$uname:$courseid";
7822: &devalidate_cache_new('getgroups',$hashid);
7823: }
7824:
7825: # ------------------------------------------------------------------ Plain Text
7826:
7827: sub plaintext {
7828: my ($short,$type,$cid,$forcedefault) = @_;
7829: if ($short =~ m{^cr/}) {
7830: return (split('/',$short))[-1];
7831: }
7832: if (!defined($cid)) {
7833: $cid = $env{'request.course.id'};
7834: }
7835: my %rolenames = (
7836: Course => 'std',
7837: Community => 'alt1',
7838: );
7839: if ($cid ne '') {
7840: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7841: unless ($forcedefault) {
7842: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7843: &Apache::lonlocal::mt_escape(\$roletext);
7844: return &Apache::lonlocal::mt($roletext);
7845: }
7846: }
7847: }
7848: if ((defined($type)) && (defined($rolenames{$type})) &&
7849: (defined($rolenames{$type})) &&
7850: (defined($prp{$short}{$rolenames{$type}}))) {
7851: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7852: } elsif ($cid ne '') {
7853: my $crstype = $env{'course.'.$cid.'.type'};
7854: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7855: (defined($prp{$short}{$rolenames{$crstype}}))) {
7856: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7857: }
7858: }
7859: return &Apache::lonlocal::mt($prp{$short}{'std'});
7860: }
7861:
7862: # ----------------------------------------------------------------- Assign Role
7863:
7864: sub assignrole {
7865: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7866: $context)=@_;
7867: my $mrole;
7868: if ($role =~ /^cr\//) {
7869: my $cwosec=$url;
7870: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7871: unless (&allowed('ccr',$cwosec)) {
7872: my $refused = 1;
7873: if ($context eq 'requestcourses') {
7874: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7875: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7876: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7877: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7878: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7879: if ($crsenv{'internal.courseowner'} eq
7880: $env{'user.name'}.':'.$env{'user.domain'}) {
7881: $refused = '';
7882: }
7883: }
7884: }
7885: }
7886: }
7887: if ($refused) {
7888: &logthis('Refused custom assignrole: '.
7889: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7890: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7891: return 'refused';
7892: }
7893: }
7894: $mrole='cr';
7895: } elsif ($role =~ /^gr\//) {
7896: my $cwogrp=$url;
7897: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7898: unless (&allowed('mdg',$cwogrp)) {
7899: &logthis('Refused group assignrole: '.
7900: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7901: $env{'user.name'}.' at '.$env{'user.domain'});
7902: return 'refused';
7903: }
7904: $mrole='gr';
7905: } else {
7906: my $cwosec=$url;
7907: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7908: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7909: my $refused;
7910: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7911: if (!(&allowed('c'.$role,$url))) {
7912: $refused = 1;
7913: }
7914: } else {
7915: $refused = 1;
7916: }
7917: if ($refused) {
7918: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7919: if (!$selfenroll && $context eq 'course') {
7920: my %crsenv;
7921: if ($role eq 'cc' || $role eq 'co') {
7922: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7923: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7924: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7925: if ($crsenv{'internal.courseowner'} eq
7926: $env{'user.name'}.':'.$env{'user.domain'}) {
7927: $refused = '';
7928: }
7929: }
7930: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7931: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7932: if ($crsenv{'internal.courseowner'} eq
7933: $env{'user.name'}.':'.$env{'user.domain'}) {
7934: $refused = '';
7935: }
7936: }
7937: }
7938: }
7939: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7940: $refused = '';
7941: } elsif ($context eq 'requestcourses') {
7942: my @possroles = ('st','ta','ep','in','cc','co');
7943: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7944: my $wrongcc;
7945: if ($cnum =~ /^$match_community$/) {
7946: $wrongcc = 1 if ($role eq 'cc');
7947: } else {
7948: $wrongcc = 1 if ($role eq 'co');
7949: }
7950: unless ($wrongcc) {
7951: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7952: if ($crsenv{'internal.courseowner'} eq
7953: $env{'user.name'}.':'.$env{'user.domain'}) {
7954: $refused = '';
7955: }
7956: }
7957: }
7958: } elsif ($context eq 'requestauthor') {
7959: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7960: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
7961: if ($env{'environment.requestauthor'} eq 'automatic') {
7962: $refused = '';
7963: } else {
7964: my %domdefaults = &get_domain_defaults($udom);
7965: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
7966: my $checkbystatus;
7967: if ($env{'user.adv'}) {
7968: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
7969: if ($disposition eq 'automatic') {
7970: $refused = '';
7971: } elsif ($disposition eq '') {
7972: $checkbystatus = 1;
7973: }
7974: } else {
7975: $checkbystatus = 1;
7976: }
7977: if ($checkbystatus) {
7978: if ($env{'environment.inststatus'}) {
7979: my @inststatuses = split(/,/,$env{'environment.inststatus'});
7980: foreach my $type (@inststatuses) {
7981: if (($type ne '') &&
7982: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
7983: $refused = '';
7984: }
7985: }
7986: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
7987: $refused = '';
7988: }
7989: }
7990: }
7991: }
7992: }
7993: }
7994: if ($refused) {
7995: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7996: ' '.$role.' '.$end.' '.$start.' by '.
7997: $env{'user.name'}.' at '.$env{'user.domain'});
7998: return 'refused';
7999: }
8000: }
8001: } elsif ($role eq 'au') {
8002: if ($url ne '/'.$udom.'/') {
8003: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8004: ' to assign author role for '.$uname.':'.$udom.
8005: ' in domain: '.$url.' refused (wrong domain).');
8006: return 'refused';
8007: }
8008: }
8009: $mrole=$role;
8010: }
8011: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8012: "$udom:$uname:$url".'_'."$mrole=$role";
8013: if ($end) { $command.='_'.$end; }
8014: if ($start) {
8015: if ($end) {
8016: $command.='_'.$start;
8017: } else {
8018: $command.='_0_'.$start;
8019: }
8020: }
8021: my $origstart = $start;
8022: my $origend = $end;
8023: my $delflag;
8024: # actually delete
8025: if ($deleteflag) {
8026: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8027: # modify command to delete the role
8028: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8029: "$udom:$uname:$url".'_'."$mrole";
8030: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8031: # set start and finish to negative values for userrolelog
8032: $start=-1;
8033: $end=-1;
8034: $delflag = 1;
8035: }
8036: }
8037: # send command
8038: my $answer=&reply($command,&homeserver($uname,$udom));
8039: # log new user role if status is ok
8040: if ($answer eq 'ok') {
8041: &userrolelog($role,$uname,$udom,$url,$start,$end);
8042: # for course roles, perform group memberships changes triggered by role change.
8043: unless ($role =~ /^gr/) {
8044: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8045: $origstart,$selfenroll,$context);
8046: }
8047: if (($role eq 'cc') || ($role eq 'in') ||
8048: ($role eq 'ep') || ($role eq 'ad') ||
8049: ($role eq 'ta') || ($role eq 'st') ||
8050: ($role=~/^cr/) || ($role eq 'gr') ||
8051: ($role eq 'co')) {
8052: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8053: $selfenroll,$context);
8054: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8055: ($role eq 'au') || ($role eq 'dc')) {
8056: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8057: $context);
8058: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8059: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8060: $context);
8061: }
8062: if ($role eq 'cc') {
8063: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8064: }
8065: }
8066: return $answer;
8067: }
8068:
8069: sub autoupdate_coowners {
8070: my ($url,$end,$start,$uname,$udom) = @_;
8071: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8072: if (($cdom ne '') && ($cnum ne '')) {
8073: my $now = time;
8074: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8075: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8076: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8077: my $instcode = $coursehash{'internal.coursecode'};
8078: if ($instcode ne '') {
8079: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8080: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8081: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8082: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8083: if ($result eq 'valid') {
8084: if ($coursehash{'internal.co-owners'}) {
8085: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8086: push(@newcoowners,$coowner);
8087: }
8088: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8089: push(@newcoowners,$uname.':'.$udom);
8090: }
8091: @newcoowners = sort(@newcoowners);
8092: } else {
8093: push(@newcoowners,$uname.':'.$udom);
8094: }
8095: } else {
8096: if ($coursehash{'internal.co-owners'}) {
8097: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8098: unless ($coowner eq $uname.':'.$udom) {
8099: push(@newcoowners,$coowner);
8100: }
8101: }
8102: unless (@newcoowners > 0) {
8103: $delcoowners = 1;
8104: $coowners = '';
8105: }
8106: }
8107: }
8108: if (@newcoowners || $delcoowners) {
8109: &store_coowners($cdom,$cnum,$coursehash{'home'},
8110: $delcoowners,@newcoowners);
8111: }
8112: }
8113: }
8114: }
8115: }
8116: }
8117: }
8118:
8119: sub store_coowners {
8120: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8121: my $cid = $cdom.'_'.$cnum;
8122: my ($coowners,$delresult,$putresult);
8123: if (@newcoowners) {
8124: $coowners = join(',',@newcoowners);
8125: my %coownershash = (
8126: 'internal.co-owners' => $coowners,
8127: );
8128: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8129: if ($putresult eq 'ok') {
8130: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8131: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8132: }
8133: }
8134: }
8135: if ($delcoowners) {
8136: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8137: if ($delresult eq 'ok') {
8138: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8139: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8140: }
8141: }
8142: }
8143: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8144: my %crsinfo =
8145: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8146: if (ref($crsinfo{$cid}) eq 'HASH') {
8147: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8148: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8149: }
8150: }
8151: }
8152:
8153: # -------------------------------------------------- Modify user authentication
8154: # Overrides without validation
8155:
8156: sub modifyuserauth {
8157: my ($udom,$uname,$umode,$upass)=@_;
8158: my $uhome=&homeserver($uname,$udom);
8159: unless (&allowed('mau',$udom)) { return 'refused'; }
8160: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8161: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8162: ' in domain '.$env{'request.role.domain'});
8163: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8164: &escape($upass),$uhome);
8165: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8166: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8167: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8168: &log($udom,,$uname,$uhome,
8169: 'Authentication changed by '.$env{'user.domain'}.', '.
8170: $env{'user.name'}.', '.$umode.
8171: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8172: unless ($reply eq 'ok') {
8173: &logthis('Authentication mode error: '.$reply);
8174: return 'error: '.$reply;
8175: }
8176: return 'ok';
8177: }
8178:
8179: # --------------------------------------------------------------- Modify a user
8180:
8181: sub modifyuser {
8182: my ($udom, $uname, $uid,
8183: $umode, $upass, $first,
8184: $middle, $last, $gene,
8185: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8186: $udom= &LONCAPA::clean_domain($udom);
8187: $uname=&LONCAPA::clean_username($uname);
8188: my $showcandelete = 'none';
8189: if (ref($candelete) eq 'ARRAY') {
8190: if (@{$candelete} > 0) {
8191: $showcandelete = join(', ',@{$candelete});
8192: }
8193: }
8194: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8195: $umode.', '.$first.', '.$middle.', '.
8196: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8197: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8198: ' desiredhome not specified').
8199: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8200: ' in domain '.$env{'request.role.domain'});
8201: my $uhome=&homeserver($uname,$udom,'true');
8202: my $newuser;
8203: if ($uhome eq 'no_host') {
8204: $newuser = 1;
8205: }
8206: # ----------------------------------------------------------------- Create User
8207: if (($uhome eq 'no_host') &&
8208: (($umode && $upass) || ($umode eq 'localauth'))) {
8209: my $unhome='';
8210: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8211: $unhome = $desiredhome;
8212: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8213: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8214: } else { # load balancing routine for determining $unhome
8215: my $loadm=10000000;
8216: my %servers = &get_servers($udom,'library');
8217: foreach my $tryserver (keys(%servers)) {
8218: my $answer=reply('load',$tryserver);
8219: if (($answer=~/\d+/) && ($answer<$loadm)) {
8220: $loadm=$answer;
8221: $unhome=$tryserver;
8222: }
8223: }
8224: }
8225: if (($unhome eq '') || ($unhome eq 'no_host')) {
8226: return 'error: unable to find a home server for '.$uname.
8227: ' in domain '.$udom;
8228: }
8229: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8230: &escape($upass),$unhome);
8231: unless ($reply eq 'ok') {
8232: return 'error: '.$reply;
8233: }
8234: $uhome=&homeserver($uname,$udom,'true');
8235: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8236: return 'error: unable verify users home machine.';
8237: }
8238: } # End of creation of new user
8239: # ---------------------------------------------------------------------- Add ID
8240: if ($uid) {
8241: $uid=~tr/A-Z/a-z/;
8242: my %uidhash=&idrget($udom,$uname);
8243: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8244: && (!$forceid)) {
8245: unless ($uid eq $uidhash{$uname}) {
8246: return 'error: user id "'.$uid.'" does not match '.
8247: 'current user id "'.$uidhash{$uname}.'".';
8248: }
8249: } else {
8250: &idput($udom,($uname => $uid));
8251: }
8252: }
8253: # -------------------------------------------------------------- Add names, etc
8254: my @tmp=&get('environment',
8255: ['firstname','middlename','lastname','generation','id',
8256: 'permanentemail','inststatus'],
8257: $udom,$uname);
8258: my (%names,%oldnames);
8259: if ($tmp[0] =~ m/^error:.*/) {
8260: %names=();
8261: } else {
8262: %names = @tmp;
8263: %oldnames = %names;
8264: }
8265: #
8266: # If name, email and/or uid are blank (e.g., because an uploaded file
8267: # of users did not contain them), do not overwrite existing values
8268: # unless field is in $candelete array ref.
8269: #
8270:
8271: my @fields = ('firstname','middlename','lastname','generation',
8272: 'permanentemail','id');
8273: my %newvalues;
8274: if (ref($candelete) eq 'ARRAY') {
8275: foreach my $field (@fields) {
8276: if (grep(/^\Q$field\E$/,@{$candelete})) {
8277: if ($field eq 'firstname') {
8278: $names{$field} = $first;
8279: } elsif ($field eq 'middlename') {
8280: $names{$field} = $middle;
8281: } elsif ($field eq 'lastname') {
8282: $names{$field} = $last;
8283: } elsif ($field eq 'generation') {
8284: $names{$field} = $gene;
8285: } elsif ($field eq 'permanentemail') {
8286: $names{$field} = $email;
8287: } elsif ($field eq 'id') {
8288: $names{$field} = $uid;
8289: }
8290: }
8291: }
8292: }
8293: if ($first) { $names{'firstname'} = $first; }
8294: if (defined($middle)) { $names{'middlename'} = $middle; }
8295: if ($last) { $names{'lastname'} = $last; }
8296: if (defined($gene)) { $names{'generation'} = $gene; }
8297: if ($email) {
8298: $email=~s/[^\w\@\.\-\,]//gs;
8299: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8300: }
8301: if ($uid) { $names{'id'} = $uid; }
8302: if (defined($inststatus)) {
8303: $names{'inststatus'} = '';
8304: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8305: if (ref($usertypes) eq 'HASH') {
8306: my @okstatuses;
8307: foreach my $item (split(/:/,$inststatus)) {
8308: if (defined($usertypes->{$item})) {
8309: push(@okstatuses,$item);
8310: }
8311: }
8312: if (@okstatuses) {
8313: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8314: }
8315: }
8316: }
8317: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8318: $umode.', '.$first.', '.$middle.', '.
8319: $last.', '.$gene.', '.$email.', '.$inststatus;
8320: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8321: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8322: } else {
8323: $logmsg .= ' during self creation';
8324: }
8325: my $changed;
8326: if ($newuser) {
8327: $changed = 1;
8328: } else {
8329: foreach my $field (@fields) {
8330: if ($names{$field} ne $oldnames{$field}) {
8331: $changed = 1;
8332: last;
8333: }
8334: }
8335: }
8336: unless ($changed) {
8337: $logmsg = 'No changes in user information needed for: '.$logmsg;
8338: &logthis($logmsg);
8339: return 'ok';
8340: }
8341: my $reply = &put('environment', \%names, $udom,$uname);
8342: if ($reply ne 'ok') {
8343: return 'error: '.$reply;
8344: }
8345: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8346: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8347: }
8348: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8349: &devalidate_cache_new('namescache',$uname.':'.$udom);
8350: $logmsg = 'Success modifying user '.$logmsg;
8351: &logthis($logmsg);
8352: return 'ok';
8353: }
8354:
8355: # -------------------------------------------------------------- Modify student
8356:
8357: sub modifystudent {
8358: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8359: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8360: $selfenroll,$context,$inststatus)=@_;
8361: if (!$cid) {
8362: unless ($cid=$env{'request.course.id'}) {
8363: return 'not_in_class';
8364: }
8365: }
8366: # --------------------------------------------------------------- Make the user
8367: my $reply=&modifyuser
8368: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8369: $desiredhome,$email,$inststatus);
8370: unless ($reply eq 'ok') { return $reply; }
8371: # This will cause &modify_student_enrollment to get the uid from the
8372: # students environment
8373: $uid = undef if (!$forceid);
8374: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8375: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
8376: return $reply;
8377: }
8378:
8379: sub modify_student_enrollment {
8380: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
8381: my ($cdom,$cnum,$chome);
8382: if (!$cid) {
8383: unless ($cid=$env{'request.course.id'}) {
8384: return 'not_in_class';
8385: }
8386: $cdom=$env{'course.'.$cid.'.domain'};
8387: $cnum=$env{'course.'.$cid.'.num'};
8388: } else {
8389: ($cdom,$cnum)=split(/_/,$cid);
8390: }
8391: $chome=$env{'course.'.$cid.'.home'};
8392: if (!$chome) {
8393: $chome=&homeserver($cnum,$cdom);
8394: }
8395: if (!$chome) { return 'unknown_course'; }
8396: # Make sure the user exists
8397: my $uhome=&homeserver($uname,$udom);
8398: if (($uhome eq '') || ($uhome eq 'no_host')) {
8399: return 'error: no such user';
8400: }
8401: # Get student data if we were not given enough information
8402: if (!defined($first) || $first eq '' ||
8403: !defined($last) || $last eq '' ||
8404: !defined($uid) || $uid eq '' ||
8405: !defined($middle) || $middle eq '' ||
8406: !defined($gene) || $gene eq '') {
8407: # They did not supply us with enough data to enroll the student, so
8408: # we need to pick up more information.
8409: my %tmp = &get('environment',
8410: ['firstname','middlename','lastname', 'generation','id']
8411: ,$udom,$uname);
8412:
8413: #foreach my $key (keys(%tmp)) {
8414: # &logthis("key $key = ".$tmp{$key});
8415: #}
8416: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8417: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8418: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8419: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8420: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8421: }
8422: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8423: my $user = "$uname:$udom";
8424: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8425: my $reply=cput('classlist',
8426: {$user =>
8427: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
8428: $cdom,$cnum);
8429: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8430: &devalidate_getsection_cache($udom,$uname,$cid);
8431: } else {
8432: return 'error: '.$reply;
8433: }
8434: # Add student role to user
8435: my $uurl='/'.$cid;
8436: $uurl=~s/\_/\//g;
8437: if ($usec) {
8438: $uurl.='/'.$usec;
8439: }
8440: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8441: $selfenroll,$context);
8442: if ($result ne 'ok') {
8443: if ($old_entry{$user} ne '') {
8444: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8445: } else {
8446: $reply = &del('classlist',[$user],$cdom,$cnum);
8447: }
8448: }
8449: return $result;
8450: }
8451:
8452: sub format_name {
8453: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
8454: my $name;
8455: if ($first ne 'lastname') {
8456: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
8457: } else {
8458: if ($lastname=~/\S/) {
8459: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
8460: $name=~s/\s+,/,/;
8461: } else {
8462: $name.= $firstname.' '.$middlename.' '.$generation;
8463: }
8464: }
8465: $name=~s/^\s+//;
8466: $name=~s/\s+$//;
8467: $name=~s/\s+/ /g;
8468: return $name;
8469: }
8470:
8471: # ------------------------------------------------- Write to course preferences
8472:
8473: sub writecoursepref {
8474: my ($courseid,%prefs)=@_;
8475: $courseid=~s/^\///;
8476: $courseid=~s/\_/\//g;
8477: my ($cdomain,$cnum)=split(/\//,$courseid);
8478: my $chome=homeserver($cnum,$cdomain);
8479: if (($chome eq '') || ($chome eq 'no_host')) {
8480: return 'error: no such course';
8481: }
8482: my $cstring='';
8483: foreach my $pref (keys(%prefs)) {
8484: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
8485: }
8486: $cstring=~s/\&$//;
8487: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
8488: }
8489:
8490: # ---------------------------------------------------------- Make/modify course
8491:
8492: sub createcourse {
8493: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
8494: $course_owner,$crstype,$cnum,$context,$category)=@_;
8495: $url=&declutter($url);
8496: my $cid='';
8497: if ($context eq 'requestcourses') {
8498: my $can_create = 0;
8499: my ($ownername,$ownerdom) = split(':',$course_owner);
8500: if ($udom eq $ownerdom) {
8501: if (&usertools_access($ownername,$ownerdom,$category,undef,
8502: $context)) {
8503: $can_create = 1;
8504: }
8505: } else {
8506: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8507: $category);
8508: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8509: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8510: if (@curr > 0) {
8511: my @options = qw(approval validate autolimit);
8512: my $optregex = join('|',@options);
8513: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8514: $can_create = 1;
8515: }
8516: }
8517: }
8518: }
8519: if ($can_create) {
8520: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8521: unless (&allowed('ccc',$udom)) {
8522: return 'refused';
8523: }
8524: }
8525: } else {
8526: return 'refused';
8527: }
8528: } elsif (!&allowed('ccc',$udom)) {
8529: return 'refused';
8530: }
8531: # --------------------------------------------------------------- Get Unique ID
8532: my $uname;
8533: if ($cnum =~ /^$match_courseid$/) {
8534: my $chome=&homeserver($cnum,$udom,'true');
8535: if (($chome eq '') || ($chome eq 'no_host')) {
8536: $uname = $cnum;
8537: } else {
8538: $uname = &generate_coursenum($udom,$crstype);
8539: }
8540: } else {
8541: $uname = &generate_coursenum($udom,$crstype);
8542: }
8543: return $uname if ($uname =~ /^error/);
8544: # -------------------------------------------------- Check supplied server name
8545: if (!defined($course_server)) {
8546: if (defined(&domain($udom,'primary'))) {
8547: $course_server = &domain($udom,'primary');
8548: } else {
8549: $course_server = $env{'user.home'};
8550: }
8551: }
8552: my %host_servers =
8553: &Apache::lonnet::get_servers($udom,'library');
8554: unless ($host_servers{$course_server}) {
8555: return 'error: invalid home server for course: '.$course_server;
8556: }
8557: # ------------------------------------------------------------- Make the course
8558: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8559: $course_server);
8560: unless ($reply eq 'ok') { return 'error: '.$reply; }
8561: my $uhome=&homeserver($uname,$udom,'true');
8562: if (($uhome eq '') || ($uhome eq 'no_host')) {
8563: return 'error: no such course';
8564: }
8565: # ----------------------------------------------------------------- Course made
8566: # log existence
8567: my $now = time;
8568: my $newcourse = {
8569: $udom.'_'.$uname => {
8570: description => $description,
8571: inst_code => $inst_code,
8572: owner => $course_owner,
8573: type => $crstype,
8574: creator => $env{'user.name'}.':'.
8575: $env{'user.domain'},
8576: created => $now,
8577: context => $context,
8578: },
8579: };
8580: &courseidput($udom,$newcourse,$uhome,'notime');
8581: # set toplevel url
8582: my $topurl=$url;
8583: unless ($nonstandard) {
8584: # ------------------------------------------ For standard courses, make top url
8585: my $mapurl=&clutter($url);
8586: if ($mapurl eq '/res/') { $mapurl=''; }
8587: $env{'form.initmap'}=(<<ENDINITMAP);
8588: <map>
8589: <resource id="1" type="start"></resource>
8590: <resource id="2" src="$mapurl"></resource>
8591: <resource id="3" type="finish"></resource>
8592: <link index="1" from="1" to="2"></link>
8593: <link index="2" from="2" to="3"></link>
8594: </map>
8595: ENDINITMAP
8596: $topurl=&declutter(
8597: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8598: );
8599: }
8600: # ----------------------------------------------------------- Write preferences
8601: &writecoursepref($udom.'_'.$uname,
8602: ('description' => $description,
8603: 'url' => $topurl,
8604: 'internal.creator' => $env{'user.name'}.':'.
8605: $env{'user.domain'},
8606: 'internal.created' => $now,
8607: 'internal.creationcontext' => $context)
8608: );
8609: return '/'.$udom.'/'.$uname;
8610: }
8611:
8612: # ------------------------------------------------------------------- Create ID
8613: sub generate_coursenum {
8614: my ($udom,$crstype) = @_;
8615: my $domdesc = &domain($udom);
8616: return 'error: invalid domain' if ($domdesc eq '');
8617: my $first;
8618: if ($crstype eq 'Community') {
8619: $first = '0';
8620: } else {
8621: $first = int(1+rand(9));
8622: }
8623: my $uname=$first.
8624: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8625: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8626: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8627: # ----------------------------------------------- Make sure that does not exist
8628: my $uhome=&homeserver($uname,$udom,'true');
8629: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8630: if ($crstype eq 'Community') {
8631: $first = '0';
8632: } else {
8633: $first = int(1+rand(9));
8634: }
8635: $uname=$first.
8636: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8637: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8638: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8639: $uhome=&homeserver($uname,$udom,'true');
8640: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8641: return 'error: unable to generate unique course-ID';
8642: }
8643: }
8644: return $uname;
8645: }
8646:
8647: sub is_course {
8648: my ($cdom, $cnum) = scalar(@_) == 1 ?
8649: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8650:
8651: return unless $cdom and $cnum;
8652:
8653: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8654: '.');
8655:
8656: return unless exists($courses{$cdom.'_'.$cnum});
8657: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8658: }
8659:
8660: sub store_userdata {
8661: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8662: my $result;
8663: if ($datakey ne '') {
8664: if (ref($storehash) eq 'HASH') {
8665: if ($udom eq '' || $uname eq '') {
8666: $udom = $env{'user.domain'};
8667: $uname = $env{'user.name'};
8668: }
8669: my $uhome=&homeserver($uname,$udom);
8670: if (($uhome eq '') || ($uhome eq 'no_host')) {
8671: $result = 'error: no_host';
8672: } else {
8673: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8674: $storehash->{'host'} = $perlvar{'lonHostID'};
8675:
8676: my $namevalue='';
8677: foreach my $key (keys(%{$storehash})) {
8678: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8679: }
8680: $namevalue=~s/\&$//;
8681: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8682: $namevalue,$uhome);
8683: }
8684: } else {
8685: $result = 'error: data to store was not a hash reference';
8686: }
8687: } else {
8688: $result= 'error: invalid requestkey';
8689: }
8690: return $result;
8691: }
8692:
8693: # ---------------------------------------------------------- Assign Custom Role
8694:
8695: sub assigncustomrole {
8696: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8697: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8698: $end,$start,$deleteflag,$selfenroll,$context);
8699: }
8700:
8701: # ----------------------------------------------------------------- Revoke Role
8702:
8703: sub revokerole {
8704: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8705: my $now=time;
8706: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8707: }
8708:
8709: # ---------------------------------------------------------- Revoke Custom Role
8710:
8711: sub revokecustomrole {
8712: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8713: my $now=time;
8714: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8715: $deleteflag,$selfenroll,$context);
8716: }
8717:
8718: # ------------------------------------------------------------ Disk usage
8719: sub diskusage {
8720: my ($udom,$uname,$directorypath,$getpropath)=@_;
8721: $directorypath =~ s/\/$//;
8722: my $listing=&reply('du2:'.&escape($directorypath).':'
8723: .&escape($getpropath).':'.&escape($uname).':'
8724: .&escape($udom),homeserver($uname,$udom));
8725: if ($listing eq 'unknown_cmd') {
8726: if ($getpropath) {
8727: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8728: }
8729: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8730: }
8731: return $listing;
8732: }
8733:
8734: sub is_locked {
8735: my ($file_name, $domain, $user, $which) = @_;
8736: my @check;
8737: my $is_locked;
8738: push (@check,$file_name);
8739: my %locked = &get('file_permissions',\@check,
8740: $env{'user.domain'},$env{'user.name'});
8741: my ($tmp)=keys(%locked);
8742: if ($tmp=~/^error:/) { undef(%locked); }
8743:
8744: if (ref($locked{$file_name}) eq 'ARRAY') {
8745: $is_locked = 'false';
8746: foreach my $entry (@{$locked{$file_name}}) {
8747: if (ref($entry) eq 'ARRAY') {
8748: $is_locked = 'true';
8749: if (ref($which) eq 'ARRAY') {
8750: push(@{$which},$entry);
8751: } else {
8752: last;
8753: }
8754: }
8755: }
8756: } else {
8757: $is_locked = 'false';
8758: }
8759: return $is_locked;
8760: }
8761:
8762: sub declutter_portfile {
8763: my ($file) = @_;
8764: $file =~ s{^(/portfolio/|portfolio/)}{/};
8765: return $file;
8766: }
8767:
8768: # ------------------------------------------------------------- Mark as Read Only
8769:
8770: sub mark_as_readonly {
8771: my ($domain,$user,$files,$what) = @_;
8772: my %current_permissions = &dump('file_permissions',$domain,$user);
8773: my ($tmp)=keys(%current_permissions);
8774: if ($tmp=~/^error:/) { undef(%current_permissions); }
8775: foreach my $file (@{$files}) {
8776: $file = &declutter_portfile($file);
8777: push(@{$current_permissions{$file}},$what);
8778: }
8779: &put('file_permissions',\%current_permissions,$domain,$user);
8780: return;
8781: }
8782:
8783: # ------------------------------------------------------------Save Selected Files
8784:
8785: sub save_selected_files {
8786: my ($user, $path, @files) = @_;
8787: my $filename = $user."savedfiles";
8788: my @other_files = &files_not_in_path($user, $path);
8789: open (OUT, '>'.$tmpdir.$filename);
8790: foreach my $file (@files) {
8791: print (OUT $env{'form.currentpath'}.$file."\n");
8792: }
8793: foreach my $file (@other_files) {
8794: print (OUT $file."\n");
8795: }
8796: close (OUT);
8797: return 'ok';
8798: }
8799:
8800: sub clear_selected_files {
8801: my ($user) = @_;
8802: my $filename = $user."savedfiles";
8803: open (OUT, '>'.LONCAPA::tempdir().$filename);
8804: print (OUT undef);
8805: close (OUT);
8806: return ("ok");
8807: }
8808:
8809: sub files_in_path {
8810: my ($user, $path) = @_;
8811: my $filename = $user."savedfiles";
8812: my %return_files;
8813: open (IN, '<'.LONCAPA::tempdir().$filename);
8814: while (my $line_in = <IN>) {
8815: chomp ($line_in);
8816: my @paths_and_file = split (m!/!, $line_in);
8817: my $file_part = pop (@paths_and_file);
8818: my $path_part = join ('/', @paths_and_file);
8819: $path_part.='/';
8820: my $path_and_file = $path_part.$file_part;
8821: if ($path_part eq $path) {
8822: $return_files{$file_part}= 'selected';
8823: }
8824: }
8825: close (IN);
8826: return (\%return_files);
8827: }
8828:
8829: # called in portfolio select mode, to show files selected NOT in current directory
8830: sub files_not_in_path {
8831: my ($user, $path) = @_;
8832: my $filename = $user."savedfiles";
8833: my @return_files;
8834: my $path_part;
8835: open(IN, '<'.LONCAPA::.$filename);
8836: while (my $line = <IN>) {
8837: #ok, I know it's clunky, but I want it to work
8838: my @paths_and_file = split(m|/|, $line);
8839: my $file_part = pop(@paths_and_file);
8840: chomp($file_part);
8841: my $path_part = join('/', @paths_and_file);
8842: $path_part .= '/';
8843: my $path_and_file = $path_part.$file_part;
8844: if ($path_part ne $path) {
8845: push(@return_files, ($path_and_file));
8846: }
8847: }
8848: close(OUT);
8849: return (@return_files);
8850: }
8851:
8852: #----------------------------------------------Get portfolio file permissions
8853:
8854: sub get_portfile_permissions {
8855: my ($domain,$user) = @_;
8856: my %current_permissions = &dump('file_permissions',$domain,$user);
8857: my ($tmp)=keys(%current_permissions);
8858: if ($tmp=~/^error:/) { undef(%current_permissions); }
8859: return \%current_permissions;
8860: }
8861:
8862: #---------------------------------------------Get portfolio file access controls
8863:
8864: sub get_access_controls {
8865: my ($current_permissions,$group,$file) = @_;
8866: my %access;
8867: my $real_file = $file;
8868: $file =~ s/\.meta$//;
8869: if (defined($file)) {
8870: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8871: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8872: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8873: }
8874: }
8875: } else {
8876: foreach my $key (keys(%{$current_permissions})) {
8877: if ($key =~ /\0accesscontrol$/) {
8878: if (defined($group)) {
8879: if ($key !~ m-^\Q$group\E/-) {
8880: next;
8881: }
8882: }
8883: my ($fullpath) = split(/\0/,$key);
8884: if (ref($$current_permissions{$key}) eq 'HASH') {
8885: foreach my $control (keys(%{$$current_permissions{$key}})) {
8886: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8887: }
8888: }
8889: }
8890: }
8891: }
8892: return %access;
8893: }
8894:
8895: sub modify_access_controls {
8896: my ($file_name,$changes,$domain,$user)=@_;
8897: my ($outcome,$deloutcome);
8898: my %store_permissions;
8899: my %new_values;
8900: my %new_control;
8901: my %translation;
8902: my @deletions = ();
8903: my $now = time;
8904: if (exists($$changes{'activate'})) {
8905: if (ref($$changes{'activate'}) eq 'HASH') {
8906: my @newitems = sort(keys(%{$$changes{'activate'}}));
8907: my $numnew = scalar(@newitems);
8908: for (my $i=0; $i<$numnew; $i++) {
8909: my $newkey = $newitems[$i];
8910: my $newid = &Apache::loncommon::get_cgi_id();
8911: if ($newkey =~ /^\d+:/) {
8912: $newkey =~ s/^(\d+)/$newid/;
8913: $translation{$1} = $newid;
8914: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8915: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8916: $translation{$1} = $newid;
8917: }
8918: $new_values{$file_name."\0".$newkey} =
8919: $$changes{'activate'}{$newitems[$i]};
8920: $new_control{$newkey} = $now;
8921: }
8922: }
8923: }
8924: my %todelete;
8925: my %changed_items;
8926: foreach my $action ('delete','update') {
8927: if (exists($$changes{$action})) {
8928: if (ref($$changes{$action}) eq 'HASH') {
8929: foreach my $key (keys(%{$$changes{$action}})) {
8930: my ($itemnum) = ($key =~ /^([^:]+):/);
8931: if ($action eq 'delete') {
8932: $todelete{$itemnum} = 1;
8933: } else {
8934: $changed_items{$itemnum} = $key;
8935: }
8936: }
8937: }
8938: }
8939: }
8940: # get lock on access controls for file.
8941: my $lockhash = {
8942: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8943: ':'.$env{'user.domain'},
8944: };
8945: my $tries = 0;
8946: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8947:
8948: while (($gotlock ne 'ok') && $tries <3) {
8949: $tries ++;
8950: sleep 1;
8951: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8952: }
8953: if ($gotlock eq 'ok') {
8954: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8955: my ($tmp)=keys(%curr_permissions);
8956: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8957: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8958: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8959: if (ref($curr_controls) eq 'HASH') {
8960: foreach my $control_item (keys(%{$curr_controls})) {
8961: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8962: if (defined($todelete{$itemnum})) {
8963: push(@deletions,$file_name."\0".$control_item);
8964: } else {
8965: if (defined($changed_items{$itemnum})) {
8966: $new_control{$changed_items{$itemnum}} = $now;
8967: push(@deletions,$file_name."\0".$control_item);
8968: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8969: } else {
8970: $new_control{$control_item} = $$curr_controls{$control_item};
8971: }
8972: }
8973: }
8974: }
8975: }
8976: my ($group);
8977: if (&is_course($domain,$user)) {
8978: ($group,my $file) = split(/\//,$file_name,2);
8979: }
8980: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8981: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8982: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8983: # remove lock
8984: my @del_lock = ($file_name."\0".'locked_access_records');
8985: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8986: my $sqlresult =
8987: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8988: $group);
8989: } else {
8990: $outcome = "error: could not obtain lockfile\n";
8991: }
8992: return ($outcome,$deloutcome,\%new_values,\%translation);
8993: }
8994:
8995: sub make_public_indefinitely {
8996: my ($requrl) = @_;
8997: my $now = time;
8998: my $action = 'activate';
8999: my $aclnum = 0;
9000: if (&is_portfolio_url($requrl)) {
9001: my (undef,$udom,$unum,$file_name,$group) =
9002: &parse_portfolio_url($requrl);
9003: my $current_perms = &get_portfile_permissions($udom,$unum);
9004: my %access_controls = &get_access_controls($current_perms,
9005: $group,$file_name);
9006: foreach my $key (keys(%{$access_controls{$file_name}})) {
9007: my ($num,$scope,$end,$start) =
9008: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9009: if ($scope eq 'public') {
9010: if ($start <= $now && $end == 0) {
9011: $action = 'none';
9012: } else {
9013: $action = 'update';
9014: $aclnum = $num;
9015: }
9016: last;
9017: }
9018: }
9019: if ($action eq 'none') {
9020: return 'ok';
9021: } else {
9022: my %changes;
9023: my $newend = 0;
9024: my $newstart = $now;
9025: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
9026: $changes{$action}{$newkey} = {
9027: type => 'public',
9028: time => {
9029: start => $newstart,
9030: end => $newend,
9031: },
9032: };
9033: my ($outcome,$deloutcome,$new_values,$translation) =
9034: &modify_access_controls($file_name,\%changes,$udom,$unum);
9035: return $outcome;
9036: }
9037: } else {
9038: return 'invalid';
9039: }
9040: }
9041:
9042: #------------------------------------------------------Get Marked as Read Only
9043:
9044: sub get_marked_as_readonly {
9045: my ($domain,$user,$what,$group) = @_;
9046: my $current_permissions = &get_portfile_permissions($domain,$user);
9047: my @readonly_files;
9048: my $cmp1=$what;
9049: if (ref($what)) { $cmp1=join('',@{$what}) };
9050: while (my ($file_name,$value) = each(%{$current_permissions})) {
9051: if (defined($group)) {
9052: if ($file_name !~ m-^\Q$group\E/-) {
9053: next;
9054: }
9055: }
9056: if (ref($value) eq "ARRAY"){
9057: foreach my $stored_what (@{$value}) {
9058: my $cmp2=$stored_what;
9059: if (ref($stored_what) eq 'ARRAY') {
9060: $cmp2=join('',@{$stored_what});
9061: }
9062: if ($cmp1 eq $cmp2) {
9063: push(@readonly_files, $file_name);
9064: last;
9065: } elsif (!defined($what)) {
9066: push(@readonly_files, $file_name);
9067: last;
9068: }
9069: }
9070: }
9071: }
9072: return @readonly_files;
9073: }
9074: #-----------------------------------------------------------Get Marked as Read Only Hash
9075:
9076: sub get_marked_as_readonly_hash {
9077: my ($current_permissions,$group,$what) = @_;
9078: my %readonly_files;
9079: while (my ($file_name,$value) = each(%{$current_permissions})) {
9080: if (defined($group)) {
9081: if ($file_name !~ m-^\Q$group\E/-) {
9082: next;
9083: }
9084: }
9085: if (ref($value) eq "ARRAY"){
9086: foreach my $stored_what (@{$value}) {
9087: if (ref($stored_what) eq 'ARRAY') {
9088: foreach my $lock_descriptor(@{$stored_what}) {
9089: if ($lock_descriptor eq 'graded') {
9090: $readonly_files{$file_name} = 'graded';
9091: } elsif ($lock_descriptor eq 'handback') {
9092: $readonly_files{$file_name} = 'handback';
9093: } else {
9094: if (!exists($readonly_files{$file_name})) {
9095: $readonly_files{$file_name} = 'locked';
9096: }
9097: }
9098: }
9099: }
9100: }
9101: }
9102: }
9103: return %readonly_files;
9104: }
9105: # ------------------------------------------------------------ Unmark as Read Only
9106:
9107: sub unmark_as_readonly {
9108: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9109: # for portfolio submissions, $what contains [$symb,$crsid]
9110: my ($domain,$user,$what,$file_name,$group) = @_;
9111: $file_name = &declutter_portfile($file_name);
9112: my $symb_crs = $what;
9113: if (ref($what)) { $symb_crs=join('',@$what); }
9114: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9115: my ($tmp)=keys(%current_permissions);
9116: if ($tmp=~/^error:/) { undef(%current_permissions); }
9117: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9118: foreach my $file (@readonly_files) {
9119: my $clean_file = &declutter_portfile($file);
9120: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9121: my $current_locks = $current_permissions{$file};
9122: my @new_locks;
9123: my @del_keys;
9124: if (ref($current_locks) eq "ARRAY"){
9125: foreach my $locker (@{$current_locks}) {
9126: my $compare=$locker;
9127: if (ref($locker) eq 'ARRAY') {
9128: $compare=join('',@{$locker});
9129: if ($compare ne $symb_crs) {
9130: push(@new_locks, $locker);
9131: }
9132: }
9133: }
9134: if (scalar(@new_locks) > 0) {
9135: $current_permissions{$file} = \@new_locks;
9136: } else {
9137: push(@del_keys, $file);
9138: &del('file_permissions',\@del_keys, $domain, $user);
9139: delete($current_permissions{$file});
9140: }
9141: }
9142: }
9143: &put('file_permissions',\%current_permissions,$domain,$user);
9144: return;
9145: }
9146:
9147: # ------------------------------------------------------------ Directory lister
9148:
9149: sub dirlist {
9150: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9151: $uri=~s/^\///;
9152: $uri=~s/\/$//;
9153: my ($udom, $uname);
9154: if ($getuserdir) {
9155: $udom = $userdomain;
9156: $uname = $username;
9157: } else {
9158: (undef,$udom,$uname)=split(/\//,$uri);
9159: if(defined($userdomain)) {
9160: $udom = $userdomain;
9161: }
9162: if(defined($username)) {
9163: $uname = $username;
9164: }
9165: }
9166: my ($dirRoot,$listing,@listing_results);
9167:
9168: $dirRoot = $perlvar{'lonDocRoot'};
9169: if (defined($getpropath)) {
9170: $dirRoot = &propath($udom,$uname);
9171: $dirRoot =~ s/\/$//;
9172: } elsif (defined($getuserdir)) {
9173: my $subdir=$uname.'__';
9174: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9175: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9176: ."/$udom/$subdir/$uname";
9177: } elsif (defined($alternateRoot)) {
9178: $dirRoot = $alternateRoot;
9179: }
9180:
9181: if($udom) {
9182: if($uname) {
9183: my $uhome = &homeserver($uname,$udom);
9184: if ($uhome eq 'no_host') {
9185: return ([],'no_host');
9186: }
9187: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9188: .$getuserdir.':'.&escape($dirRoot)
9189: .':'.&escape($uname).':'.&escape($udom),$uhome);
9190: if ($listing eq 'unknown_cmd') {
9191: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9192: } else {
9193: @listing_results = map { &unescape($_); } split(/:/,$listing);
9194: }
9195: if ($listing eq 'unknown_cmd') {
9196: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9197: @listing_results = split(/:/,$listing);
9198: } else {
9199: @listing_results = map { &unescape($_); } split(/:/,$listing);
9200: }
9201: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9202: ($listing eq 'rejected') || ($listing eq 'refused') ||
9203: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9204: return ([],$listing);
9205: } else {
9206: return (\@listing_results);
9207: }
9208: } elsif(!$alternateRoot) {
9209: my (%allusers,%listerror);
9210: my %servers = &get_servers($udom,'library');
9211: foreach my $tryserver (keys(%servers)) {
9212: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9213: &escape($udom),$tryserver);
9214: if ($listing eq 'unknown_cmd') {
9215: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9216: $udom, $tryserver);
9217: } else {
9218: @listing_results = map { &unescape($_); } split(/:/,$listing);
9219: }
9220: if ($listing eq 'unknown_cmd') {
9221: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9222: $udom, $tryserver);
9223: @listing_results = split(/:/,$listing);
9224: } else {
9225: @listing_results =
9226: map { &unescape($_); } split(/:/,$listing);
9227: }
9228: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9229: ($listing eq 'rejected') || ($listing eq 'refused') ||
9230: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9231: $listerror{$tryserver} = $listing;
9232: } else {
9233: foreach my $line (@listing_results) {
9234: my ($entry) = split(/&/,$line,2);
9235: $allusers{$entry} = 1;
9236: }
9237: }
9238: }
9239: my @alluserslist=();
9240: foreach my $user (sort(keys(%allusers))) {
9241: push(@alluserslist,$user.'&user');
9242: }
9243: return (\@alluserslist);
9244: } else {
9245: return ([],'missing username');
9246: }
9247: } elsif(!defined($getpropath)) {
9248: my $path = $perlvar{'lonDocRoot'}.'/res/';
9249: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9250: return (\@all_domains);
9251: } else {
9252: return ([],'missing domain');
9253: }
9254: }
9255:
9256: # --------------------------------------------- GetFileTimestamp
9257: # This function utilizes dirlist and returns the date stamp for
9258: # when it was last modified. It will also return an error of -1
9259: # if an error occurs
9260:
9261: sub GetFileTimestamp {
9262: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9263: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9264: $studentName = &LONCAPA::clean_username($studentName);
9265: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9266: undef,$getuserdir);
9267: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9268: return -1;
9269: }
9270: if (ref($fileref) eq 'ARRAY') {
9271: my @stats = split('&',$fileref->[0]);
9272: # @stats contains first the filename, then the stat output
9273: return $stats[10]; # so this is 10 instead of 9.
9274: } else {
9275: return -1;
9276: }
9277: }
9278:
9279: sub stat_file {
9280: my ($uri) = @_;
9281: $uri = &clutter_with_no_wrapper($uri);
9282:
9283: my ($udom,$uname,$file);
9284: if ($uri =~ m-^/(uploaded|editupload)/-) {
9285: ($udom,$uname,$file) =
9286: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
9287: $file = 'userfiles/'.$file;
9288: }
9289: if ($uri =~ m-^/res/-) {
9290: ($udom,$uname) =
9291: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
9292: $file = $uri;
9293: }
9294:
9295: if (!$udom || !$uname || !$file) {
9296: # unable to handle the uri
9297: return ();
9298: }
9299: my $getpropath;
9300: if ($file =~ /^userfiles\//) {
9301: $getpropath = 1;
9302: }
9303: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
9304: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9305: return ();
9306: } else {
9307: if (ref($listref) eq 'ARRAY') {
9308: my @stats = split('&',$listref->[0]);
9309: shift(@stats); #filename is first
9310: return @stats;
9311: }
9312: }
9313: return ();
9314: }
9315:
9316: # -------------------------------------------------------- Value of a Condition
9317:
9318: # gets the value of a specific preevaluated condition
9319: # stored in the string $env{user.state.<cid>}
9320: # or looks up a condition reference in the bighash and if if hasn't
9321: # already been evaluated recurses into docondval to get the value of
9322: # the condition, then memoizing it to
9323: # $env{user.state.<cid>.<condition>}
9324: sub directcondval {
9325: my $number=shift;
9326: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
9327: &Apache::lonuserstate::evalstate();
9328: }
9329: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
9330: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
9331: } elsif ($number =~ /^_/) {
9332: my $sub_condition;
9333: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9334: &GDBM_READER(),0640)) {
9335: $sub_condition=$bighash{'conditions'.$number};
9336: untie(%bighash);
9337: }
9338: my $value = &docondval($sub_condition);
9339: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
9340: return $value;
9341: }
9342: if ($env{'user.state.'.$env{'request.course.id'}}) {
9343: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
9344: } else {
9345: return 2;
9346: }
9347: }
9348:
9349: # get the collection of conditions for this resource
9350: sub condval {
9351: my $condidx=shift;
9352: my $allpathcond='';
9353: foreach my $cond (split(/\|/,$condidx)) {
9354: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
9355: $allpathcond.=
9356: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
9357: }
9358: }
9359: $allpathcond=~s/\|$//;
9360: return &docondval($allpathcond);
9361: }
9362:
9363: #evaluates an expression of conditions
9364: sub docondval {
9365: my ($allpathcond) = @_;
9366: my $result=0;
9367: if ($env{'request.course.id'}
9368: && defined($allpathcond)) {
9369: my $operand='|';
9370: my @stack;
9371: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
9372: if ($chunk eq '(') {
9373: push @stack,($operand,$result);
9374: } elsif ($chunk eq ')') {
9375: my $before=pop @stack;
9376: if (pop @stack eq '&') {
9377: $result=$result>$before?$before:$result;
9378: } else {
9379: $result=$result>$before?$result:$before;
9380: }
9381: } elsif (($chunk eq '&') || ($chunk eq '|')) {
9382: $operand=$chunk;
9383: } else {
9384: my $new=directcondval($chunk);
9385: if ($operand eq '&') {
9386: $result=$result>$new?$new:$result;
9387: } else {
9388: $result=$result>$new?$result:$new;
9389: }
9390: }
9391: }
9392: }
9393: return $result;
9394: }
9395:
9396: # ---------------------------------------------------- Devalidate courseresdata
9397:
9398: sub devalidatecourseresdata {
9399: my ($coursenum,$coursedomain)=@_;
9400: my $hashid=$coursenum.':'.$coursedomain;
9401: &devalidate_cache_new('courseres',$hashid);
9402: }
9403:
9404:
9405: # --------------------------------------------------- Course Resourcedata Query
9406: #
9407: # Parameters:
9408: # $coursenum - Number of the course.
9409: # $coursedomain - Domain at which the course was created.
9410: # Returns:
9411: # A hash of the course parameters along (I think) with timestamps
9412: # and version info.
9413:
9414: sub get_courseresdata {
9415: my ($coursenum,$coursedomain)=@_;
9416: my $coursehom=&homeserver($coursenum,$coursedomain);
9417: my $hashid=$coursenum.':'.$coursedomain;
9418: my ($result,$cached)=&is_cached_new('courseres',$hashid);
9419: my %dumpreply;
9420: unless (defined($cached)) {
9421: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
9422: $result=\%dumpreply;
9423: my ($tmp) = keys(%dumpreply);
9424: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9425: &do_cache_new('courseres',$hashid,$result,600);
9426: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
9427: return $tmp;
9428: } elsif ($tmp =~ /^(error)/) {
9429: $result=undef;
9430: &do_cache_new('courseres',$hashid,$result,600);
9431: }
9432: }
9433: return $result;
9434: }
9435:
9436: sub devalidateuserresdata {
9437: my ($uname,$udom)=@_;
9438: my $hashid="$udom:$uname";
9439: &devalidate_cache_new('userres',$hashid);
9440: }
9441:
9442: sub get_userresdata {
9443: my ($uname,$udom)=@_;
9444: #most student don\'t have any data set, check if there is some data
9445: if (&EXT_cache_status($udom,$uname)) { return undef; }
9446:
9447: my $hashid="$udom:$uname";
9448: my ($result,$cached)=&is_cached_new('userres',$hashid);
9449: if (!defined($cached)) {
9450: my %resourcedata=&dump('resourcedata',$udom,$uname);
9451: $result=\%resourcedata;
9452: &do_cache_new('userres',$hashid,$result,600);
9453: }
9454: my ($tmp)=keys(%$result);
9455: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
9456: return $result;
9457: }
9458: #error 2 occurs when the .db doesn't exist
9459: if ($tmp!~/error: 2 /) {
9460: &logthis("<font color=\"blue\">WARNING:".
9461: " Trying to get resource data for ".
9462: $uname." at ".$udom.": ".
9463: $tmp."</font>");
9464: } elsif ($tmp=~/error: 2 /) {
9465: #&EXT_cache_set($udom,$uname);
9466: &do_cache_new('userres',$hashid,undef,600);
9467: undef($tmp); # not really an error so don't send it back
9468: }
9469: return $tmp;
9470: }
9471: #----------------------------------------------- resdata - return resource data
9472: # Purpose:
9473: # Return resource data for either users or for a course.
9474: # Parameters:
9475: # $name - Course/user name.
9476: # $domain - Name of the domain the user/course is registered on.
9477: # $type - Type of thing $name is (must be 'course' or 'user'
9478: # @which - Array of names of resources desired.
9479: # Returns:
9480: # The value of the first reasource in @which that is found in the
9481: # resource hash.
9482: # Exceptional Conditions:
9483: # If the $type passed in is not valid (not the string 'course' or
9484: # 'user', an undefined reference is returned.
9485: # If none of the resources are found, an undef is returned
9486: sub resdata {
9487: my ($name,$domain,$type,@which)=@_;
9488: my $result;
9489: if ($type eq 'course') {
9490: $result=&get_courseresdata($name,$domain);
9491: } elsif ($type eq 'user') {
9492: $result=&get_userresdata($name,$domain);
9493: }
9494: if (!ref($result)) { return $result; }
9495: foreach my $item (@which) {
9496: if (defined($result->{$item->[0]})) {
9497: return [$result->{$item->[0]},$item->[1]];
9498: }
9499: }
9500: return undef;
9501: }
9502:
9503: #
9504: # EXT resource caching routines
9505: #
9506:
9507: sub clear_EXT_cache_status {
9508: &delenv('cache.EXT.');
9509: }
9510:
9511: sub EXT_cache_status {
9512: my ($target_domain,$target_user) = @_;
9513: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9514: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9515: # We know already the user has no data
9516: return 1;
9517: } else {
9518: return 0;
9519: }
9520: }
9521:
9522: sub EXT_cache_set {
9523: my ($target_domain,$target_user) = @_;
9524: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9525: #&appenv({$cachename => time});
9526: }
9527:
9528: # --------------------------------------------------------- Value of a Variable
9529: sub EXT {
9530:
9531: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9532: unless ($varname) { return ''; }
9533: #get real user name/domain, courseid and symb
9534: my $courseid;
9535: my $publicuser;
9536: if ($symbparm) {
9537: $symbparm=&get_symb_from_alias($symbparm);
9538: }
9539: if (!($uname && $udom)) {
9540: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9541: if (!$symbparm) { $symbparm=$cursymb; }
9542: } else {
9543: $courseid=$env{'request.course.id'};
9544: }
9545: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9546: my $rest;
9547: if (defined($therest[0])) {
9548: $rest=join('.',@therest);
9549: } else {
9550: $rest='';
9551: }
9552:
9553: my $qualifierrest=$qualifier;
9554: if ($rest) { $qualifierrest.='.'.$rest; }
9555: my $spacequalifierrest=$space;
9556: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9557: if ($realm eq 'user') {
9558: # --------------------------------------------------------------- user.resource
9559: if ($space eq 'resource') {
9560: if ( (defined($Apache::lonhomework::parsing_a_problem)
9561: || defined($Apache::lonhomework::parsing_a_task))
9562: &&
9563: ($symbparm eq &symbread()) ) {
9564: # if we are in the middle of processing the resource the
9565: # get the value we are planning on committing
9566: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9567: return $Apache::lonhomework::results{$qualifierrest};
9568: } else {
9569: return $Apache::lonhomework::history{$qualifierrest};
9570: }
9571: } else {
9572: my %restored;
9573: if ($publicuser || $env{'request.state'} eq 'construct') {
9574: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9575: } else {
9576: %restored=&restore($symbparm,$courseid,$udom,$uname);
9577: }
9578: return $restored{$qualifierrest};
9579: }
9580: # ----------------------------------------------------------------- user.access
9581: } elsif ($space eq 'access') {
9582: # FIXME - not supporting calls for a specific user
9583: return &allowed($qualifier,$rest);
9584: # ------------------------------------------ user.preferences, user.environment
9585: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9586: if (($uname eq $env{'user.name'}) &&
9587: ($udom eq $env{'user.domain'})) {
9588: return $env{join('.',('environment',$qualifierrest))};
9589: } else {
9590: my %returnhash;
9591: if (!$publicuser) {
9592: %returnhash=&userenvironment($udom,$uname,
9593: $qualifierrest);
9594: }
9595: return $returnhash{$qualifierrest};
9596: }
9597: # ----------------------------------------------------------------- user.course
9598: } elsif ($space eq 'course') {
9599: # FIXME - not supporting calls for a specific user
9600: return $env{join('.',('request.course',$qualifier))};
9601: # ------------------------------------------------------------------- user.role
9602: } elsif ($space eq 'role') {
9603: # FIXME - not supporting calls for a specific user
9604: my ($role,$where)=split(/\./,$env{'request.role'});
9605: if ($qualifier eq 'value') {
9606: return $role;
9607: } elsif ($qualifier eq 'extent') {
9608: return $where;
9609: }
9610: # ----------------------------------------------------------------- user.domain
9611: } elsif ($space eq 'domain') {
9612: return $udom;
9613: # ------------------------------------------------------------------- user.name
9614: } elsif ($space eq 'name') {
9615: return $uname;
9616: # ---------------------------------------------------- Any other user namespace
9617: } else {
9618: my %reply;
9619: if (!$publicuser) {
9620: %reply=&get($space,[$qualifierrest],$udom,$uname);
9621: }
9622: return $reply{$qualifierrest};
9623: }
9624: } elsif ($realm eq 'query') {
9625: # ---------------------------------------------- pull stuff out of query string
9626: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9627: [$spacequalifierrest]);
9628: return $env{'form.'.$spacequalifierrest};
9629: } elsif ($realm eq 'request') {
9630: # ------------------------------------------------------------- request.browser
9631: if ($space eq 'browser') {
9632: return $env{'browser.'.$qualifier};
9633: # ------------------------------------------------------------ request.filename
9634: } else {
9635: return $env{'request.'.$spacequalifierrest};
9636: }
9637: } elsif ($realm eq 'course') {
9638: # ---------------------------------------------------------- course.description
9639: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9640: } elsif ($realm eq 'resource') {
9641:
9642: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9643: if (!$symbparm) { $symbparm=&symbread(); }
9644: }
9645:
9646: if ($space eq 'title') {
9647: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9648: return &gettitle($symbparm);
9649: }
9650:
9651: if ($space eq 'map') {
9652: my ($map) = &decode_symb($symbparm);
9653: return &symbread($map);
9654: }
9655: if ($space eq 'filename') {
9656: if ($symbparm) {
9657: return &clutter((&decode_symb($symbparm))[2]);
9658: }
9659: return &hreflocation('',$env{'request.filename'});
9660: }
9661:
9662: my ($section, $group, @groups);
9663: my ($courselevelm,$courselevel);
9664: if ($symbparm && defined($courseid) &&
9665: $courseid eq $env{'request.course.id'}) {
9666:
9667: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9668:
9669: # ----------------------------------------------------- Cascading lookup scheme
9670: my $symbp=$symbparm;
9671: my $mapp=&deversion((&decode_symb($symbp))[0]);
9672:
9673: my $symbparm=$symbp.'.'.$spacequalifierrest;
9674: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9675:
9676: if (($env{'user.name'} eq $uname) &&
9677: ($env{'user.domain'} eq $udom)) {
9678: $section=$env{'request.course.sec'};
9679: @groups = split(/:/,$env{'request.course.groups'});
9680: @groups=&sort_course_groups($courseid,@groups);
9681: } else {
9682: if (! defined($usection)) {
9683: $section=&getsection($udom,$uname,$courseid);
9684: } else {
9685: $section = $usection;
9686: }
9687: @groups = &get_users_groups($udom,$uname,$courseid);
9688: }
9689:
9690: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9691: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9692: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9693:
9694: $courselevel=$courseid.'.'.$spacequalifierrest;
9695: my $courselevelr=$courseid.'.'.$symbparm;
9696: $courselevelm=$courseid.'.'.$mapparm;
9697:
9698: # ----------------------------------------------------------- first, check user
9699:
9700: my $userreply=&resdata($uname,$udom,'user',
9701: ([$courselevelr,'resource'],
9702: [$courselevelm,'map' ],
9703: [$courselevel, 'course' ]));
9704: if (defined($userreply)) { return &get_reply($userreply); }
9705:
9706: # ------------------------------------------------ second, check some of course
9707: my $coursereply;
9708: if (@groups > 0) {
9709: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9710: $mapparm,$spacequalifierrest);
9711: if (defined($coursereply)) { return &get_reply($coursereply); }
9712: }
9713:
9714: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9715: $env{'course.'.$courseid.'.domain'},
9716: 'course',
9717: ([$seclevelr, 'resource'],
9718: [$seclevelm, 'map' ],
9719: [$seclevel, 'course' ],
9720: [$courselevelr,'resource']));
9721: if (defined($coursereply)) { return &get_reply($coursereply); }
9722:
9723: # ------------------------------------------------------ third, check map parms
9724: my %parmhash=();
9725: my $thisparm='';
9726: if (tie(%parmhash,'GDBM_File',
9727: $env{'request.course.fn'}.'_parms.db',
9728: &GDBM_READER(),0640)) {
9729: $thisparm=$parmhash{$symbparm};
9730: untie(%parmhash);
9731: }
9732: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9733: }
9734: # ------------------------------------------ fourth, look in resource metadata
9735:
9736: $spacequalifierrest=~s/\./\_/;
9737: my $filename;
9738: if (!$symbparm) { $symbparm=&symbread(); }
9739: if ($symbparm) {
9740: $filename=(&decode_symb($symbparm))[2];
9741: } else {
9742: $filename=$env{'request.filename'};
9743: }
9744: my $metadata=&metadata($filename,$spacequalifierrest);
9745: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9746: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9747: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9748:
9749: # ---------------------------------------------- fourth, look in rest of course
9750: if ($symbparm && defined($courseid) &&
9751: $courseid eq $env{'request.course.id'}) {
9752: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9753: $env{'course.'.$courseid.'.domain'},
9754: 'course',
9755: ([$courselevelm,'map' ],
9756: [$courselevel, 'course']));
9757: if (defined($coursereply)) { return &get_reply($coursereply); }
9758: }
9759: # ------------------------------------------------------------------ Cascade up
9760: unless ($space eq '0') {
9761: my @parts=split(/_/,$space);
9762: my $id=pop(@parts);
9763: my $part=join('_',@parts);
9764: if ($part eq '') { $part='0'; }
9765: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9766: $symbparm,$udom,$uname,$section,1);
9767: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9768: }
9769: if ($recurse) { return undef; }
9770: my $pack_def=&packages_tab_default($filename,$varname);
9771: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9772: # ---------------------------------------------------- Any other user namespace
9773: } elsif ($realm eq 'environment') {
9774: # ----------------------------------------------------------------- environment
9775: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9776: return $env{'environment.'.$spacequalifierrest};
9777: } else {
9778: if ($uname eq 'anonymous' && $udom eq '') {
9779: return '';
9780: }
9781: my %returnhash=&userenvironment($udom,$uname,
9782: $spacequalifierrest);
9783: return $returnhash{$spacequalifierrest};
9784: }
9785: } elsif ($realm eq 'system') {
9786: # ----------------------------------------------------------------- system.time
9787: if ($space eq 'time') {
9788: return time;
9789: }
9790: } elsif ($realm eq 'server') {
9791: # ----------------------------------------------------------------- system.time
9792: if ($space eq 'name') {
9793: return $ENV{'SERVER_NAME'};
9794: }
9795: }
9796: return '';
9797: }
9798:
9799: sub get_reply {
9800: my ($reply_value) = @_;
9801: if (ref($reply_value) eq 'ARRAY') {
9802: if (wantarray) {
9803: return @$reply_value;
9804: }
9805: return $reply_value->[0];
9806: } else {
9807: return $reply_value;
9808: }
9809: }
9810:
9811: sub check_group_parms {
9812: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9813: my @groupitems = ();
9814: my $resultitem;
9815: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9816: foreach my $group (@{$groups}) {
9817: foreach my $level (@levels) {
9818: my $item = $courseid.'.['.$group.'].'.$level->[0];
9819: push(@groupitems,[$item,$level->[1]]);
9820: }
9821: }
9822: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9823: $env{'course.'.$courseid.'.domain'},
9824: 'course',@groupitems);
9825: return $coursereply;
9826: }
9827:
9828: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9829: my ($courseid,@groups) = @_;
9830: @groups = sort(@groups);
9831: return @groups;
9832: }
9833:
9834: sub packages_tab_default {
9835: my ($uri,$varname)=@_;
9836: my (undef,$part,$name)=split(/\./,$varname);
9837:
9838: my (@extension,@specifics,$do_default);
9839: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9840: my ($pack_type,$pack_part)=split(/_/,$package,2);
9841: if ($pack_type eq 'default') {
9842: $do_default=1;
9843: } elsif ($pack_type eq 'extension') {
9844: push(@extension,[$package,$pack_type,$pack_part]);
9845: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9846: # only look at packages defaults for packages that this id is
9847: push(@specifics,[$package,$pack_type,$pack_part]);
9848: }
9849: }
9850: # first look for a package that matches the requested part id
9851: foreach my $package (@specifics) {
9852: my (undef,$pack_type,$pack_part)=@{$package};
9853: next if ($pack_part ne $part);
9854: if (defined($packagetab{"$pack_type&$name&default"})) {
9855: return $packagetab{"$pack_type&$name&default"};
9856: }
9857: }
9858: # look for any possible matching non extension_ package
9859: foreach my $package (@specifics) {
9860: my (undef,$pack_type,$pack_part)=@{$package};
9861: if (defined($packagetab{"$pack_type&$name&default"})) {
9862: return $packagetab{"$pack_type&$name&default"};
9863: }
9864: if ($pack_type eq 'part') { $pack_part='0'; }
9865: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9866: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9867: }
9868: }
9869: # look for any posible extension_ match
9870: foreach my $package (@extension) {
9871: my ($package,$pack_type)=@{$package};
9872: if (defined($packagetab{"$pack_type&$name&default"})) {
9873: return $packagetab{"$pack_type&$name&default"};
9874: }
9875: if (defined($packagetab{$package."&$name&default"})) {
9876: return $packagetab{$package."&$name&default"};
9877: }
9878: }
9879: # look for a global default setting
9880: if ($do_default && defined($packagetab{"default&$name&default"})) {
9881: return $packagetab{"default&$name&default"};
9882: }
9883: return undef;
9884: }
9885:
9886: sub add_prefix_and_part {
9887: my ($prefix,$part)=@_;
9888: my $keyroot;
9889: if (defined($prefix) && $prefix !~ /^__/) {
9890: # prefix that has a part already
9891: $keyroot=$prefix;
9892: } elsif (defined($prefix)) {
9893: # prefix that is missing a part
9894: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9895: } else {
9896: # no prefix at all
9897: if (defined($part)) { $keyroot='_'.$part; }
9898: }
9899: return $keyroot;
9900: }
9901:
9902: # ---------------------------------------------------------------- Get metadata
9903:
9904: my %metaentry;
9905: my %importedpartids;
9906: sub metadata {
9907: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9908: $uri=&declutter($uri);
9909: # if it is a non metadata possible uri return quickly
9910: if (($uri eq '') ||
9911: (($uri =~ m|^/*adm/|) &&
9912: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9913: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9914: return undef;
9915: }
9916: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9917: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9918: return undef;
9919: }
9920: my $filename=$uri;
9921: $uri=~s/\.meta$//;
9922: #
9923: # Is the metadata already cached?
9924: # Look at timestamp of caching
9925: # Everything is cached by the main uri, libraries are never directly cached
9926: #
9927: if (!defined($liburi)) {
9928: my ($result,$cached)=&is_cached_new('meta',$uri);
9929: if (defined($cached)) { return $result->{':'.$what}; }
9930: }
9931: {
9932: # Imported parts would go here
9933: my %importedids=();
9934: my @origfileimportpartids=();
9935: my $importedparts=0;
9936: #
9937: # Is this a recursive call for a library?
9938: #
9939: # if (! exists($metacache{$uri})) {
9940: # $metacache{$uri}={};
9941: # }
9942: my $cachetime = 60*60;
9943: if ($liburi) {
9944: $liburi=&declutter($liburi);
9945: $filename=$liburi;
9946: } else {
9947: &devalidate_cache_new('meta',$uri);
9948: undef(%metaentry);
9949: }
9950: my %metathesekeys=();
9951: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9952: my $metastring;
9953: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9954: my $which = &hreflocation('','/'.($liburi || $uri));
9955: $metastring =
9956: &Apache::lonnet::ssi_body($which,
9957: ('grade_target' => 'meta'));
9958: $cachetime = 1; # only want this cached in the child not long term
9959: } elsif (($uri !~ m -^(editupload)/-) &&
9960: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9961: my $file=&filelocation('',&clutter($filename));
9962: #push(@{$metaentry{$uri.'.file'}},$file);
9963: $metastring=&getfile($file);
9964: }
9965: my $parser=HTML::LCParser->new(\$metastring);
9966: my $token;
9967: undef %metathesekeys;
9968: while ($token=$parser->get_token) {
9969: if ($token->[0] eq 'S') {
9970: if (defined($token->[2]->{'package'})) {
9971: #
9972: # This is a package - get package info
9973: #
9974: my $package=$token->[2]->{'package'};
9975: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9976: if (defined($token->[2]->{'id'})) {
9977: $keyroot.='_'.$token->[2]->{'id'};
9978: }
9979: if ($metaentry{':packages'}) {
9980: $metaentry{':packages'}.=','.$package.$keyroot;
9981: } else {
9982: $metaentry{':packages'}=$package.$keyroot;
9983: }
9984: foreach my $pack_entry (keys(%packagetab)) {
9985: my $part=$keyroot;
9986: $part=~s/^\_//;
9987: if ($pack_entry=~/^\Q$package\E\&/ ||
9988: $pack_entry=~/^\Q$package\E_0\&/) {
9989: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9990: # ignore package.tab specified default values
9991: # here &package_tab_default() will fetch those
9992: if ($subp eq 'default') { next; }
9993: my $value=$packagetab{$pack_entry};
9994: my $unikey;
9995: if ($pack =~ /_0$/) {
9996: $unikey='parameter_0_'.$name;
9997: $part=0;
9998: } else {
9999: $unikey='parameter'.$keyroot.'_'.$name;
10000: }
10001: if ($subp eq 'display') {
10002: $value.=' [Part: '.$part.']';
10003: }
10004: $metaentry{':'.$unikey.'.part'}=$part;
10005: $metathesekeys{$unikey}=1;
10006: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10007: $metaentry{':'.$unikey.'.'.$subp}=$value;
10008: }
10009: if (defined($metaentry{':'.$unikey.'.default'})) {
10010: $metaentry{':'.$unikey}=
10011: $metaentry{':'.$unikey.'.default'};
10012: }
10013: }
10014: }
10015: } else {
10016: #
10017: # This is not a package - some other kind of start tag
10018: #
10019: my $entry=$token->[1];
10020: my $unikey='';
10021:
10022: if ($entry eq 'import') {
10023: #
10024: # Importing a library here
10025: #
10026: my $location=$parser->get_text('/import');
10027: my $dir=$filename;
10028: $dir=~s|[^/]*$||;
10029: $location=&filelocation($dir,$location);
10030:
10031: my $importmode=$token->[2]->{'importmode'};
10032: if ($importmode eq 'problem') {
10033: # Import as problem/response
10034: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10035: } elsif ($importmode eq 'part') {
10036: # Import as part(s)
10037: $importedparts=1;
10038: # We need to get the original file and the imported file to get the part order correct
10039: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10040: # Load and inspect original file
10041: if ($#origfileimportpartids<0) {
10042: undef(%importedpartids);
10043: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10044: my $origfile=&getfile($origfilelocation);
10045: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10046: }
10047:
10048: # Load and inspect imported file
10049: my $impfile=&getfile($location);
10050: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10051: if ($#impfilepartids>=0) {
10052: # This problem had parts
10053: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10054: } else {
10055: # Importing by turning a single problem into a problem part
10056: # It gets the import-tags ID as part-ID
10057: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10058: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10059: }
10060: } else {
10061: # Normal import
10062: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10063: if (defined($token->[2]->{'id'})) {
10064: $unikey.='_'.$token->[2]->{'id'};
10065: }
10066: }
10067:
10068: if ($depthcount<20) {
10069: my $metadata =
10070: &metadata($uri,'keys', $location,$unikey,
10071: $depthcount+1);
10072: foreach my $meta (split(',',$metadata)) {
10073: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10074: $metathesekeys{$meta}=1;
10075: }
10076:
10077: }
10078: } else {
10079: #
10080: # Not importing, some other kind of non-package, non-library start tag
10081: #
10082: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10083: if (defined($token->[2]->{'id'})) {
10084: $unikey.='_'.$token->[2]->{'id'};
10085: }
10086: if (defined($token->[2]->{'name'})) {
10087: $unikey.='_'.$token->[2]->{'name'};
10088: }
10089: $metathesekeys{$unikey}=1;
10090: foreach my $param (@{$token->[3]}) {
10091: $metaentry{':'.$unikey.'.'.$param} =
10092: $token->[2]->{$param};
10093: }
10094: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10095: my $default=$metaentry{':'.$unikey.'.default'};
10096: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10097: # only ws inside the tag, and not in default, so use default
10098: # as value
10099: $metaentry{':'.$unikey}=$default;
10100: } elsif ( $internaltext =~ /\S/ ) {
10101: # something interesting inside the tag
10102: $metaentry{':'.$unikey}=$internaltext;
10103: } else {
10104: # no interesting values, don't set a default
10105: }
10106: # end of not-a-package not-a-library import
10107: }
10108: # end of not-a-package start tag
10109: }
10110: # the next is the end of "start tag"
10111: }
10112: }
10113: my ($extension) = ($uri =~ /\.(\w+)$/);
10114: $extension = lc($extension);
10115: if ($extension eq 'htm') { $extension='html'; }
10116:
10117: foreach my $key (keys(%packagetab)) {
10118: #no specific packages #how's our extension
10119: if ($key!~/^extension_\Q$extension\E&/) { next; }
10120: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10121: \%metathesekeys);
10122: }
10123:
10124: if (!exists($metaentry{':packages'})
10125: || $packagetab{"import_defaults&extension_$extension"}) {
10126: foreach my $key (keys(%packagetab)) {
10127: #no specific packages well let's get default then
10128: if ($key!~/^default&/) { next; }
10129: &metadata_create_package_def($uri,$key,'default',
10130: \%metathesekeys);
10131: }
10132: }
10133: # are there custom rights to evaluate
10134: if ($metaentry{':copyright'} eq 'custom') {
10135:
10136: #
10137: # Importing a rights file here
10138: #
10139: unless ($depthcount) {
10140: my $location=$metaentry{':customdistributionfile'};
10141: my $dir=$filename;
10142: $dir=~s|[^/]*$||;
10143: $location=&filelocation($dir,$location);
10144: my $rights_metadata =
10145: &metadata($uri,'keys',$location,'_rights',
10146: $depthcount+1);
10147: foreach my $rights (split(',',$rights_metadata)) {
10148: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10149: $metathesekeys{$rights}=1;
10150: }
10151: }
10152: }
10153: # uniqifiy package listing
10154: my %seen;
10155: my @uniq_packages =
10156: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10157: $metaentry{':packages'} = join(',',@uniq_packages);
10158:
10159: if ($importedparts) {
10160: # We had imported parts and need to rebuild partorder
10161: $metaentry{':partorder'}='';
10162: $metathesekeys{'partorder'}=1;
10163: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10164: if ($origfileimportpartids[$index] eq 'part') {
10165: # original part, part of the problem
10166: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10167: } else {
10168: # we have imported parts at this position
10169: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10170: }
10171: }
10172: $metaentry{':partorder'}=~s/^\,//;
10173: }
10174:
10175: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10176: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10177: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
10178: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10179: # this is the end of "was not already recently cached
10180: }
10181: return $metaentry{':'.$what};
10182: }
10183:
10184: sub metadata_create_package_def {
10185: my ($uri,$key,$package,$metathesekeys)=@_;
10186: my ($pack,$name,$subp)=split(/\&/,$key);
10187: if ($subp eq 'default') { next; }
10188:
10189: if (defined($metaentry{':packages'})) {
10190: $metaentry{':packages'}.=','.$package;
10191: } else {
10192: $metaentry{':packages'}=$package;
10193: }
10194: my $value=$packagetab{$key};
10195: my $unikey;
10196: $unikey='parameter_0_'.$name;
10197: $metaentry{':'.$unikey.'.part'}=0;
10198: $$metathesekeys{$unikey}=1;
10199: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10200: $metaentry{':'.$unikey.'.'.$subp}=$value;
10201: }
10202: if (defined($metaentry{':'.$unikey.'.default'})) {
10203: $metaentry{':'.$unikey}=
10204: $metaentry{':'.$unikey.'.default'};
10205: }
10206: }
10207:
10208: sub metadata_generate_part0 {
10209: my ($metadata,$metacache,$uri) = @_;
10210: my %allnames;
10211: foreach my $metakey (keys(%$metadata)) {
10212: if ($metakey=~/^parameter\_(.*)/) {
10213: my $part=$$metacache{':'.$metakey.'.part'};
10214: my $name=$$metacache{':'.$metakey.'.name'};
10215: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10216: $allnames{$name}=$part;
10217: }
10218: }
10219: }
10220: foreach my $name (keys(%allnames)) {
10221: $$metadata{"parameter_0_$name"}=1;
10222: my $key=":parameter_0_$name";
10223: $$metacache{"$key.part"}='0';
10224: $$metacache{"$key.name"}=$name;
10225: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10226: $allnames{$name}.'_'.$name.
10227: '.type'};
10228: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10229: '.display'};
10230: my $expr='[Part: '.$allnames{$name}.']';
10231: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10232: $$metacache{"$key.display"}=$olddis;
10233: }
10234: }
10235:
10236: # ------------------------------------------------------ Devalidate title cache
10237:
10238: sub devalidate_title_cache {
10239: my ($url)=@_;
10240: if (!$env{'request.course.id'}) { return; }
10241: my $symb=&symbread($url);
10242: if (!$symb) { return; }
10243: my $key=$env{'request.course.id'}."\0".$symb;
10244: &devalidate_cache_new('title',$key);
10245: }
10246:
10247: # ------------------------------------------------- Get the title of a course
10248:
10249: sub current_course_title {
10250: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
10251: }
10252: # ------------------------------------------------- Get the title of a resource
10253:
10254: sub gettitle {
10255: my $urlsymb=shift;
10256: my $symb=&symbread($urlsymb);
10257: if ($symb) {
10258: my $key=$env{'request.course.id'}."\0".$symb;
10259: my ($result,$cached)=&is_cached_new('title',$key);
10260: if (defined($cached)) {
10261: return $result;
10262: }
10263: my ($map,$resid,$url)=&decode_symb($symb);
10264: my $title='';
10265: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
10266: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
10267: } else {
10268: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10269: &GDBM_READER(),0640)) {
10270: my $mapid=$bighash{'map_pc_'.&clutter($map)};
10271: $title=$bighash{'title_'.$mapid.'.'.$resid};
10272: untie(%bighash);
10273: }
10274: }
10275: $title=~s/\&colon\;/\:/gs;
10276: if ($title) {
10277: # Remember both $symb and $title for dynamic metadata
10278: $accesshash{$symb.'___crstitle'}=$title;
10279: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
10280: # Cache this title and then return it
10281: return &do_cache_new('title',$key,$title,600);
10282: }
10283: $urlsymb=$url;
10284: }
10285: my $title=&metadata($urlsymb,'title');
10286: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
10287: return $title;
10288: }
10289:
10290: sub getdocspath {
10291: my ($symb) = @_;
10292: my $path;
10293: if ($symb) {
10294: my ($mapurl,$id,$resurl) = &decode_symb($symb);
10295: if ($resurl=~/\.(sequence|page)$/) {
10296: $mapurl=$resurl;
10297: } elsif ($resurl eq 'adm/navmaps') {
10298: $mapurl=$env{'course.'.$env{'request.course.id'}.'.url'};
10299: }
10300: my $mapresobj;
10301: my $navmap = Apache::lonnavmaps::navmap->new();
10302: if (ref($navmap)) {
10303: $mapresobj = $navmap->getResourceByUrl($mapurl);
10304: }
10305: $mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1};
10306: my $type=$2;
10307: if (ref($mapresobj)) {
10308: my $pcslist = $mapresobj->map_hierarchy();
10309: if ($pcslist ne '') {
10310: foreach my $pc (split(/,/,$pcslist)) {
10311: next if ($pc <= 1);
10312: my $res = $navmap->getByMapPc($pc);
10313: if (ref($res)) {
10314: my $thisurl = $res->src();
10315: $thisurl=~s{^.*/([^/]+)\.\w+$}{$1};
10316: my $thistitle = $res->title();
10317: $path .= '&'.
10318: &Apache::lonhtmlcommon::entity_encode($thisurl).'&'.
10319: &Apache::lonhtmlcommon::entity_encode($thistitle).
10320: ':'.$res->randompick().
10321: ':'.$res->randomout().
10322: ':'.$res->encrypted().
10323: ':'.$res->randomorder();
10324: }
10325: }
10326: }
10327: $path =~ s/^\&//;
10328: my $maptitle = $mapresobj->title();
10329: if ($mapurl eq 'default') {
10330: $maptitle = 'Main Course Documents';
10331: }
10332: $path .= ($path ne '')? '&' : ''.
10333: &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
10334: &Apache::lonhtmlcommon::entity_encode($maptitle).
10335: ':'.$mapresobj->randompick().
10336: ':'.$mapresobj->randomout().
10337: ':'.$mapresobj->encrypted().
10338: ':'.$mapresobj->randomorder();
10339: } else {
10340: my $maptitle = &gettitle($mapurl);
10341: if ($mapurl eq 'default') {
10342: $maptitle = 'Main Course Documents';
10343: }
10344: $path = &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
10345: &Apache::lonhtmlcommon::entity_encode($maptitle).'::::';
10346: }
10347: unless ($mapurl eq 'default') {
10348: $path = 'default&'.
10349: &Apache::lonhtmlcommon::entity_encode('Main Course Documents').
10350: '::::&'.$path;
10351: }
10352: }
10353: return $path;
10354: }
10355:
10356: sub get_slot {
10357: my ($which,$cnum,$cdom)=@_;
10358: if (!$cnum || !$cdom) {
10359: (undef,my $courseid)=&whichuser();
10360: $cdom=$env{'course.'.$courseid.'.domain'};
10361: $cnum=$env{'course.'.$courseid.'.num'};
10362: }
10363: my $key=join("\0",'slots',$cdom,$cnum,$which);
10364: my %slotinfo;
10365: if (exists($remembered{$key})) {
10366: $slotinfo{$which} = $remembered{$key};
10367: } else {
10368: %slotinfo=&get('slots',[$which],$cdom,$cnum);
10369: &Apache::lonhomework::showhash(%slotinfo);
10370: my ($tmp)=keys(%slotinfo);
10371: if ($tmp=~/^error:/) { return (); }
10372: $remembered{$key} = $slotinfo{$which};
10373: }
10374: if (ref($slotinfo{$which}) eq 'HASH') {
10375: return %{$slotinfo{$which}};
10376: }
10377: return $slotinfo{$which};
10378: }
10379:
10380: sub get_reservable_slots {
10381: my ($cnum,$cdom,$uname,$udom) = @_;
10382: my $now = time;
10383: my $reservable_info;
10384: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
10385: if (exists($remembered{$key})) {
10386: $reservable_info = $remembered{$key};
10387: } else {
10388: my %resv;
10389: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
10390: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
10391: $reservable_info = \%resv;
10392: $remembered{$key} = $reservable_info;
10393: }
10394: return $reservable_info;
10395: }
10396:
10397: sub get_course_slots {
10398: my ($cnum,$cdom) = @_;
10399: my $hashid=$cnum.':'.$cdom;
10400: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
10401: if (defined($cached)) {
10402: if (ref($result) eq 'HASH') {
10403: return %{$result};
10404: }
10405: } else {
10406: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
10407: my ($tmp) = keys(%slots);
10408: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10409: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
10410: return %slots;
10411: }
10412: }
10413: return;
10414: }
10415:
10416: sub devalidate_slots_cache {
10417: my ($cnum,$cdom)=@_;
10418: my $hashid=$cnum.':'.$cdom;
10419: &devalidate_cache_new('allslots',$hashid);
10420: }
10421:
10422: sub get_coursechange {
10423: my ($cdom,$cnum) = @_;
10424: if ($cdom eq '' || $cnum eq '') {
10425: return unless ($env{'request.course.id'});
10426: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10427: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10428: }
10429: my $hashid=$cdom.'_'.$cnum;
10430: my ($change,$cached)=&is_cached_new('crschange',$hashid);
10431: if ((defined($cached)) && ($change ne '')) {
10432: return $change;
10433: } else {
10434: my %crshash;
10435: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
10436: if ($crshash{'internal.contentchange'} eq '') {
10437: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
10438: if ($change eq '') {
10439: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
10440: $change = $crshash{'internal.created'};
10441: }
10442: } else {
10443: $change = $crshash{'internal.contentchange'};
10444: }
10445: my $cachetime = 600;
10446: &do_cache_new('crschange',$hashid,$change,$cachetime);
10447: }
10448: return $change;
10449: }
10450:
10451: sub devalidate_coursechange_cache {
10452: my ($cnum,$cdom)=@_;
10453: my $hashid=$cnum.':'.$cdom;
10454: &devalidate_cache_new('crschange',$hashid);
10455: }
10456:
10457: # ------------------------------------------------- Update symbolic store links
10458:
10459: sub symblist {
10460: my ($mapname,%newhash)=@_;
10461: $mapname=&deversion(&declutter($mapname));
10462: my %hash;
10463: if (($env{'request.course.fn'}) && (%newhash)) {
10464: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10465: &GDBM_WRCREAT(),0640)) {
10466: foreach my $url (keys(%newhash)) {
10467: next if ($url eq 'last_known'
10468: && $env{'form.no_update_last_known'});
10469: $hash{declutter($url)}=&encode_symb($mapname,
10470: $newhash{$url}->[1],
10471: $newhash{$url}->[0]);
10472: }
10473: if (untie(%hash)) {
10474: return 'ok';
10475: }
10476: }
10477: }
10478: return 'error';
10479: }
10480:
10481: # --------------------------------------------------------------- Verify a symb
10482:
10483: sub symbverify {
10484: my ($symb,$thisurl,$encstate)=@_;
10485: my $thisfn=$thisurl;
10486: $thisfn=&declutter($thisfn);
10487: # direct jump to resource in page or to a sequence - will construct own symbs
10488: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
10489: # check URL part
10490: my ($map,$resid,$url)=&decode_symb($symb);
10491:
10492: unless ($url eq $thisfn) { return 0; }
10493:
10494: $symb=&symbclean($symb);
10495: $thisurl=&deversion($thisurl);
10496: $thisfn=&deversion($thisfn);
10497:
10498: my %bighash;
10499: my $okay=0;
10500:
10501: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10502: &GDBM_READER(),0640)) {
10503: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
10504: $thisurl =~ s/\?.+$//;
10505: }
10506: my $ids=$bighash{'ids_'.&clutter($thisurl)};
10507: unless ($ids) {
10508: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
10509: $ids=$bighash{$idkey};
10510: }
10511: if ($ids) {
10512: # ------------------------------------------------------------------- Has ID(s)
10513: foreach my $id (split(/\,/,$ids)) {
10514: my ($mapid,$resid)=split(/\./,$id);
10515: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
10516: $symb =~ s/\?.+$//;
10517: }
10518: if (
10519: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
10520: eq $symb) {
10521: if (ref($encstate)) {
10522: $$encstate = $bighash{'encrypted_'.$id};
10523: }
10524: if (($env{'request.role.adv'}) ||
10525: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
10526: ($thisurl eq '/adm/navmaps')) {
10527: $okay=1;
10528: }
10529: }
10530: }
10531: }
10532: untie(%bighash);
10533: }
10534: return $okay;
10535: }
10536:
10537: # --------------------------------------------------------------- Clean-up symb
10538:
10539: sub symbclean {
10540: my $symb=shift;
10541: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10542: # remove version from map
10543: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
10544:
10545: # remove version from URL
10546: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
10547:
10548: # remove wrapper
10549:
10550: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
10551: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
10552: return $symb;
10553: }
10554:
10555: # ---------------------------------------------- Split symb to find map and url
10556:
10557: sub encode_symb {
10558: my ($map,$resid,$url)=@_;
10559: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
10560: }
10561:
10562: sub decode_symb {
10563: my $symb=shift;
10564: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
10565: my ($map,$resid,$url)=split(/___/,$symb);
10566: return (&fixversion($map),$resid,&fixversion($url));
10567: }
10568:
10569: sub fixversion {
10570: my $fn=shift;
10571: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10572: my %bighash;
10573: my $uri=&clutter($fn);
10574: my $key=$env{'request.course.id'}.'_'.$uri;
10575: # is this cached?
10576: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10577: if (defined($cached)) { return $result; }
10578: # unfortunately not cached, or expired
10579: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10580: &GDBM_READER(),0640)) {
10581: if ($bighash{'version_'.$uri}) {
10582: my $version=$bighash{'version_'.$uri};
10583: unless (($version eq 'mostrecent') ||
10584: ($version==&getversion($uri))) {
10585: $uri=~s/\.(\w+)$/\.$version\.$1/;
10586: }
10587: }
10588: untie %bighash;
10589: }
10590: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10591: }
10592:
10593: sub deversion {
10594: my $url=shift;
10595: $url=~s/\.\d+\.(\w+)$/\.$1/;
10596: return $url;
10597: }
10598:
10599: # ------------------------------------------------------ Return symb list entry
10600:
10601: sub symbread {
10602: my ($thisfn,$donotrecurse)=@_;
10603: my $cache_str='request.symbread.cached.'.$thisfn;
10604: if (defined($env{$cache_str})) {
10605: if (($thisfn) || ($env{$cache_str} ne '')) {
10606: return $env{$cache_str};
10607: }
10608: }
10609: # no filename provided? try from environment
10610: unless ($thisfn) {
10611: if ($env{'request.symb'}) {
10612: return $env{$cache_str}=&symbclean($env{'request.symb'});
10613: }
10614: $thisfn=$env{'request.filename'};
10615: }
10616: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10617: # is that filename actually a symb? Verify, clean, and return
10618: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10619: if (&symbverify($thisfn,$1)) {
10620: return $env{$cache_str}=&symbclean($thisfn);
10621: }
10622: }
10623: $thisfn=declutter($thisfn);
10624: my %hash;
10625: my %bighash;
10626: my $syval='';
10627: if (($env{'request.course.fn'}) && ($thisfn)) {
10628: my $targetfn = $thisfn;
10629: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10630: $targetfn = 'adm/wrapper/'.$thisfn;
10631: }
10632: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10633: $targetfn=$1;
10634: }
10635: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10636: &GDBM_READER(),0640)) {
10637: $syval=$hash{$targetfn};
10638: untie(%hash);
10639: }
10640: # ---------------------------------------------------------- There was an entry
10641: if ($syval) {
10642: #unless ($syval=~/\_\d+$/) {
10643: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10644: #&appenv({'request.ambiguous' => $thisfn});
10645: #return $env{$cache_str}='';
10646: #}
10647: #$syval.=$1;
10648: #}
10649: } else {
10650: # ------------------------------------------------------- Was not in symb table
10651: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10652: &GDBM_READER(),0640)) {
10653: # ---------------------------------------------- Get ID(s) for current resource
10654: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10655: unless ($ids) {
10656: $ids=$bighash{'ids_/'.$thisfn};
10657: }
10658: unless ($ids) {
10659: # alias?
10660: $ids=$bighash{'mapalias_'.$thisfn};
10661: }
10662: if ($ids) {
10663: # ------------------------------------------------------------------- Has ID(s)
10664: my @possibilities=split(/\,/,$ids);
10665: if ($#possibilities==0) {
10666: # ----------------------------------------------- There is only one possibility
10667: my ($mapid,$resid)=split(/\./,$ids);
10668: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10669: $resid,$thisfn);
10670: } elsif (!$donotrecurse) {
10671: # ------------------------------------------ There is more than one possibility
10672: my $realpossible=0;
10673: foreach my $id (@possibilities) {
10674: my $file=$bighash{'src_'.$id};
10675: if (&allowed('bre',$file)) {
10676: my ($mapid,$resid)=split(/\./,$id);
10677: if ($bighash{'map_type_'.$mapid} ne 'page') {
10678: $realpossible++;
10679: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10680: $resid,$thisfn);
10681: }
10682: }
10683: }
10684: if ($realpossible!=1) { $syval=''; }
10685: } else {
10686: $syval='';
10687: }
10688: }
10689: untie(%bighash)
10690: }
10691: }
10692: if ($syval) {
10693: return $env{$cache_str}=$syval;
10694: }
10695: }
10696: &appenv({'request.ambiguous' => $thisfn});
10697: return $env{$cache_str}='';
10698: }
10699:
10700: # ---------------------------------------------------------- Return random seed
10701:
10702: sub numval {
10703: my $txt=shift;
10704: $txt=~tr/A-J/0-9/;
10705: $txt=~tr/a-j/0-9/;
10706: $txt=~tr/K-T/0-9/;
10707: $txt=~tr/k-t/0-9/;
10708: $txt=~tr/U-Z/0-5/;
10709: $txt=~tr/u-z/0-5/;
10710: $txt=~s/\D//g;
10711: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10712: return int($txt);
10713: }
10714:
10715: sub numval2 {
10716: my $txt=shift;
10717: $txt=~tr/A-J/0-9/;
10718: $txt=~tr/a-j/0-9/;
10719: $txt=~tr/K-T/0-9/;
10720: $txt=~tr/k-t/0-9/;
10721: $txt=~tr/U-Z/0-5/;
10722: $txt=~tr/u-z/0-5/;
10723: $txt=~s/\D//g;
10724: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10725: my $total;
10726: foreach my $val (@txts) { $total+=$val; }
10727: if ($_64bit) { if ($total > 2**32) { return -1; } }
10728: return int($total);
10729: }
10730:
10731: sub numval3 {
10732: use integer;
10733: my $txt=shift;
10734: $txt=~tr/A-J/0-9/;
10735: $txt=~tr/a-j/0-9/;
10736: $txt=~tr/K-T/0-9/;
10737: $txt=~tr/k-t/0-9/;
10738: $txt=~tr/U-Z/0-5/;
10739: $txt=~tr/u-z/0-5/;
10740: $txt=~s/\D//g;
10741: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10742: my $total;
10743: foreach my $val (@txts) { $total+=$val; }
10744: if ($_64bit) { $total=(($total<<32)>>32); }
10745: return $total;
10746: }
10747:
10748: sub digest {
10749: my ($data)=@_;
10750: my $digest=&Digest::MD5::md5($data);
10751: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10752: my ($e,$f);
10753: {
10754: use integer;
10755: $e=($a+$b);
10756: $f=($c+$d);
10757: if ($_64bit) {
10758: $e=(($e<<32)>>32);
10759: $f=(($f<<32)>>32);
10760: }
10761: }
10762: if (wantarray) {
10763: return ($e,$f);
10764: } else {
10765: my $g;
10766: {
10767: use integer;
10768: $g=($e+$f);
10769: if ($_64bit) {
10770: $g=(($g<<32)>>32);
10771: }
10772: }
10773: return $g;
10774: }
10775: }
10776:
10777: sub latest_rnd_algorithm_id {
10778: return '64bit5';
10779: }
10780:
10781: sub get_rand_alg {
10782: my ($courseid)=@_;
10783: if (!$courseid) { $courseid=(&whichuser())[1]; }
10784: if ($courseid) {
10785: return $env{"course.$courseid.rndseed"};
10786: }
10787: return &latest_rnd_algorithm_id();
10788: }
10789:
10790: sub validCODE {
10791: my ($CODE)=@_;
10792: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10793: return 0;
10794: }
10795:
10796: sub getCODE {
10797: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10798: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10799: defined($Apache::lonhomework::parsing_a_task) ) &&
10800: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10801: return $Apache::lonhomework::history{'resource.CODE'};
10802: }
10803: return undef;
10804: }
10805: #
10806: # Determines the random seed for a specific context:
10807: #
10808: # parameters:
10809: # symb - in course context the symb for the seed.
10810: # course_id - The course id of the form domain_coursenum.
10811: # domain - Domain for the user.
10812: # course - Course for the user.
10813: # cenv - environment of the course.
10814: #
10815: # NOTE:
10816: # All parameters are picked out of the environment if missing
10817: # or not defined.
10818: # If a symb cannot be determined the current time is used instead.
10819: #
10820: # For a given well defined symb, courside, domain, username,
10821: # and course environment, the seed is reproducible.
10822: #
10823: sub rndseed {
10824: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10825: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10826: if (!defined($symb)) {
10827: unless ($symb=$wsymb) { return time; }
10828: }
10829: if (!defined $courseid) {
10830: $courseid=$wcourseid;
10831: }
10832: if (!defined $domain) { $domain=$wdomain; }
10833: if (!defined $username) { $username=$wusername }
10834:
10835: my $which;
10836: if (defined($cenv->{'rndseed'})) {
10837: $which = $cenv->{'rndseed'};
10838: } else {
10839: $which =&get_rand_alg($courseid);
10840: }
10841: if (defined(&getCODE())) {
10842:
10843: if ($which eq '64bit5') {
10844: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10845: } elsif ($which eq '64bit4') {
10846: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10847: } else {
10848: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10849: }
10850: } elsif ($which eq '64bit5') {
10851: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10852: } elsif ($which eq '64bit4') {
10853: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10854: } elsif ($which eq '64bit3') {
10855: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10856: } elsif ($which eq '64bit2') {
10857: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10858: } elsif ($which eq '64bit') {
10859: return &rndseed_64bit($symb,$courseid,$domain,$username);
10860: }
10861: return &rndseed_32bit($symb,$courseid,$domain,$username);
10862: }
10863:
10864: sub rndseed_32bit {
10865: my ($symb,$courseid,$domain,$username)=@_;
10866: {
10867: use integer;
10868: my $symbchck=unpack("%32C*",$symb) << 27;
10869: my $symbseed=numval($symb) << 22;
10870: my $namechck=unpack("%32C*",$username) << 17;
10871: my $nameseed=numval($username) << 12;
10872: my $domainseed=unpack("%32C*",$domain) << 7;
10873: my $courseseed=unpack("%32C*",$courseid);
10874: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10875: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10876: #&logthis("rndseed :$num:$symb");
10877: if ($_64bit) { $num=(($num<<32)>>32); }
10878: return $num;
10879: }
10880: }
10881:
10882: sub rndseed_64bit {
10883: my ($symb,$courseid,$domain,$username)=@_;
10884: {
10885: use integer;
10886: my $symbchck=unpack("%32S*",$symb) << 21;
10887: my $symbseed=numval($symb) << 10;
10888: my $namechck=unpack("%32S*",$username);
10889:
10890: my $nameseed=numval($username) << 21;
10891: my $domainseed=unpack("%32S*",$domain) << 10;
10892: my $courseseed=unpack("%32S*",$courseid);
10893:
10894: my $num1=$symbchck+$symbseed+$namechck;
10895: my $num2=$nameseed+$domainseed+$courseseed;
10896: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10897: #&logthis("rndseed :$num:$symb");
10898: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10899: return "$num1,$num2";
10900: }
10901: }
10902:
10903: sub rndseed_64bit2 {
10904: my ($symb,$courseid,$domain,$username)=@_;
10905: {
10906: use integer;
10907: # strings need to be an even # of cahracters long, it it is odd the
10908: # last characters gets thrown away
10909: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10910: my $symbseed=numval($symb) << 10;
10911: my $namechck=unpack("%32S*",$username.' ');
10912:
10913: my $nameseed=numval($username) << 21;
10914: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10915: my $courseseed=unpack("%32S*",$courseid.' ');
10916:
10917: my $num1=$symbchck+$symbseed+$namechck;
10918: my $num2=$nameseed+$domainseed+$courseseed;
10919: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10920: #&logthis("rndseed :$num:$symb");
10921: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10922: return "$num1,$num2";
10923: }
10924: }
10925:
10926: sub rndseed_64bit3 {
10927: my ($symb,$courseid,$domain,$username)=@_;
10928: {
10929: use integer;
10930: # strings need to be an even # of cahracters long, it it is odd the
10931: # last characters gets thrown away
10932: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10933: my $symbseed=numval2($symb) << 10;
10934: my $namechck=unpack("%32S*",$username.' ');
10935:
10936: my $nameseed=numval2($username) << 21;
10937: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10938: my $courseseed=unpack("%32S*",$courseid.' ');
10939:
10940: my $num1=$symbchck+$symbseed+$namechck;
10941: my $num2=$nameseed+$domainseed+$courseseed;
10942: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10943: #&logthis("rndseed :$num1:$num2:$_64bit");
10944: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10945:
10946: return "$num1:$num2";
10947: }
10948: }
10949:
10950: sub rndseed_64bit4 {
10951: my ($symb,$courseid,$domain,$username)=@_;
10952: {
10953: use integer;
10954: # strings need to be an even # of cahracters long, it it is odd the
10955: # last characters gets thrown away
10956: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10957: my $symbseed=numval3($symb) << 10;
10958: my $namechck=unpack("%32S*",$username.' ');
10959:
10960: my $nameseed=numval3($username) << 21;
10961: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10962: my $courseseed=unpack("%32S*",$courseid.' ');
10963:
10964: my $num1=$symbchck+$symbseed+$namechck;
10965: my $num2=$nameseed+$domainseed+$courseseed;
10966: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10967: #&logthis("rndseed :$num1:$num2:$_64bit");
10968: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10969:
10970: return "$num1:$num2";
10971: }
10972: }
10973:
10974: sub rndseed_64bit5 {
10975: my ($symb,$courseid,$domain,$username)=@_;
10976: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10977: return "$num1:$num2";
10978: }
10979:
10980: sub rndseed_CODE_64bit {
10981: my ($symb,$courseid,$domain,$username)=@_;
10982: {
10983: use integer;
10984: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10985: my $symbseed=numval2($symb);
10986: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10987: my $CODEseed=numval(&getCODE());
10988: my $courseseed=unpack("%32S*",$courseid.' ');
10989: my $num1=$symbseed+$CODEchck;
10990: my $num2=$CODEseed+$courseseed+$symbchck;
10991: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10992: #&logthis("rndseed :$num1:$num2:$symb");
10993: if ($_64bit) { $num1=(($num1<<32)>>32); }
10994: if ($_64bit) { $num2=(($num2<<32)>>32); }
10995: return "$num1:$num2";
10996: }
10997: }
10998:
10999: sub rndseed_CODE_64bit4 {
11000: my ($symb,$courseid,$domain,$username)=@_;
11001: {
11002: use integer;
11003: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11004: my $symbseed=numval3($symb);
11005: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11006: my $CODEseed=numval3(&getCODE());
11007: my $courseseed=unpack("%32S*",$courseid.' ');
11008: my $num1=$symbseed+$CODEchck;
11009: my $num2=$CODEseed+$courseseed+$symbchck;
11010: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11011: #&logthis("rndseed :$num1:$num2:$symb");
11012: if ($_64bit) { $num1=(($num1<<32)>>32); }
11013: if ($_64bit) { $num2=(($num2<<32)>>32); }
11014: return "$num1:$num2";
11015: }
11016: }
11017:
11018: sub rndseed_CODE_64bit5 {
11019: my ($symb,$courseid,$domain,$username)=@_;
11020: my $code = &getCODE();
11021: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11022: return "$num1:$num2";
11023: }
11024:
11025: sub setup_random_from_rndseed {
11026: my ($rndseed)=@_;
11027: if ($rndseed =~/([,:])/) {
11028: my ($num1,$num2)=split(/[,:]/,$rndseed);
11029: &Math::Random::random_set_seed(abs($num1),abs($num2));
11030: } else {
11031: &Math::Random::random_set_seed_from_phrase($rndseed);
11032: }
11033: }
11034:
11035: sub latest_receipt_algorithm_id {
11036: return 'receipt3';
11037: }
11038:
11039: sub recunique {
11040: my $fucourseid=shift;
11041: my $unique;
11042: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11043: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11044: $unique=$env{"course.$fucourseid.internal.encseed"};
11045: } else {
11046: $unique=$perlvar{'lonReceipt'};
11047: }
11048: return unpack("%32C*",$unique);
11049: }
11050:
11051: sub recprefix {
11052: my $fucourseid=shift;
11053: my $prefix;
11054: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11055: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11056: $prefix=$env{"course.$fucourseid.internal.encpref"};
11057: } else {
11058: $prefix=$perlvar{'lonHostID'};
11059: }
11060: return unpack("%32C*",$prefix);
11061: }
11062:
11063: sub ireceipt {
11064: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11065:
11066: my $return =&recprefix($fucourseid).'-';
11067:
11068: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11069: $env{'request.state'} eq 'construct') {
11070: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11071: return $return;
11072: }
11073:
11074: my $cuname=unpack("%32C*",$funame);
11075: my $cudom=unpack("%32C*",$fudom);
11076: my $cucourseid=unpack("%32C*",$fucourseid);
11077: my $cusymb=unpack("%32C*",$fusymb);
11078: my $cunique=&recunique($fucourseid);
11079: my $cpart=unpack("%32S*",$part);
11080: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11081:
11082: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11083:
11084: $return.= ($cunique%$cuname+
11085: $cunique%$cudom+
11086: $cusymb%$cuname+
11087: $cusymb%$cudom+
11088: $cucourseid%$cuname+
11089: $cucourseid%$cudom+
11090: $cpart%$cuname+
11091: $cpart%$cudom);
11092: } else {
11093: $return.= ($cunique%$cuname+
11094: $cunique%$cudom+
11095: $cusymb%$cuname+
11096: $cusymb%$cudom+
11097: $cucourseid%$cuname+
11098: $cucourseid%$cudom);
11099: }
11100: return $return;
11101: }
11102:
11103: sub receipt {
11104: my ($part)=@_;
11105: my ($symb,$courseid,$domain,$name) = &whichuser();
11106: return &ireceipt($name,$domain,$courseid,$symb,$part);
11107: }
11108:
11109: sub whichuser {
11110: my ($passedsymb)=@_;
11111: my ($symb,$courseid,$domain,$name,$publicuser);
11112: if (defined($env{'form.grade_symb'})) {
11113: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11114: my $allowed=&allowed('vgr',$tmp_courseid);
11115: if (!$allowed &&
11116: exists($env{'request.course.sec'}) &&
11117: $env{'request.course.sec'} !~ /^\s*$/) {
11118: $allowed=&allowed('vgr',$tmp_courseid.
11119: '/'.$env{'request.course.sec'});
11120: }
11121: if ($allowed) {
11122: ($symb)=&get_env_multiple('form.grade_symb');
11123: $courseid=$tmp_courseid;
11124: ($domain)=&get_env_multiple('form.grade_domain');
11125: ($name)=&get_env_multiple('form.grade_username');
11126: return ($symb,$courseid,$domain,$name,$publicuser);
11127: }
11128: }
11129: if (!$passedsymb) {
11130: $symb=&symbread();
11131: } else {
11132: $symb=$passedsymb;
11133: }
11134: $courseid=$env{'request.course.id'};
11135: $domain=$env{'user.domain'};
11136: $name=$env{'user.name'};
11137: if ($name eq 'public' && $domain eq 'public') {
11138: if (!defined($env{'form.username'})) {
11139: $env{'form.username'}.=time.rand(10000000);
11140: }
11141: $name.=$env{'form.username'};
11142: }
11143: return ($symb,$courseid,$domain,$name,$publicuser);
11144:
11145: }
11146:
11147: # ------------------------------------------------------------ Serves up a file
11148: # returns either the contents of the file or
11149: # -1 if the file doesn't exist
11150: #
11151: # if the target is a file that was uploaded via DOCS,
11152: # a check will be made to see if a current copy exists on the local server,
11153: # if it does this will be served, otherwise a copy will be retrieved from
11154: # the home server for the course and stored in /home/httpd/html/userfiles on
11155: # the local server.
11156:
11157: sub getfile {
11158: my ($file) = @_;
11159: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11160: &repcopy($file);
11161: return &readfile($file);
11162: }
11163:
11164: sub repcopy_userfile {
11165: my ($file)=@_;
11166: my $londocroot = $perlvar{'lonDocRoot'};
11167: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11168: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11169: my ($cdom,$cnum,$filename) =
11170: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11171: my $uri="/uploaded/$cdom/$cnum/$filename";
11172: if (-e "$file") {
11173: # we already have a local copy, check it out
11174: my @fileinfo = stat($file);
11175: my $rtncode;
11176: my $info;
11177: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11178: if ($lwpresp ne 'ok') {
11179: # there is no such file anymore, even though we had a local copy
11180: if ($rtncode eq '404') {
11181: unlink($file);
11182: }
11183: return -1;
11184: }
11185: if ($info < $fileinfo[9]) {
11186: # nice, the file we have is up-to-date, just say okay
11187: return 'ok';
11188: } else {
11189: # the file is outdated, get rid of it
11190: unlink($file);
11191: }
11192: }
11193: # one way or the other, at this point, we don't have the file
11194: # construct the correct path for the file
11195: my @parts = ($cdom,$cnum);
11196: if ($filename =~ m|^(.+)/[^/]+$|) {
11197: push @parts, split(/\//,$1);
11198: }
11199: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11200: foreach my $part (@parts) {
11201: $path .= '/'.$part;
11202: if (!-e $path) {
11203: mkdir($path,0770);
11204: }
11205: }
11206: # now the path exists for sure
11207: # get a user agent
11208: my $ua=new LWP::UserAgent;
11209: my $transferfile=$file.'.in.transfer';
11210: # FIXME: this should flock
11211: if (-e $transferfile) { return 'ok'; }
11212: my $request;
11213: $uri=~s/^\///;
11214: my $homeserver = &homeserver($cnum,$cdom);
11215: my $protocol = $protocol{$homeserver};
11216: $protocol = 'http' if ($protocol ne 'https');
11217: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11218: my $response=$ua->request($request,$transferfile);
11219: # did it work?
11220: if ($response->is_error()) {
11221: unlink($transferfile);
11222: &logthis("Userfile repcopy failed for $uri");
11223: return -1;
11224: }
11225: # worked, rename the transfer file
11226: rename($transferfile,$file);
11227: return 'ok';
11228: }
11229:
11230: sub tokenwrapper {
11231: my $uri=shift;
11232: $uri=~s|^https?\://([^/]+)||;
11233: $uri=~s|^/||;
11234: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11235: my $token=$1;
11236: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11237: if ($udom && $uname && $file) {
11238: $file=~s|(\?\.*)*$||;
11239: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11240: my $homeserver = &homeserver($uname,$udom);
11241: my $protocol = $protocol{$homeserver};
11242: $protocol = 'http' if ($protocol ne 'https');
11243: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11244: (($uri=~/\?/)?'&':'?').'token='.$token.
11245: '&tokenissued='.$perlvar{'lonHostID'};
11246: } else {
11247: return '/adm/notfound.html';
11248: }
11249: }
11250:
11251: # call with reqtype HEAD: get last modification time
11252: # call with reqtype GET: get the file contents
11253: # Do not call this with reqtype GET for large files! It loads everything into memory
11254: #
11255: sub getuploaded {
11256: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11257: $uri=~s/^\///;
11258: my $homeserver = &homeserver($cnum,$cdom);
11259: my $protocol = $protocol{$homeserver};
11260: $protocol = 'http' if ($protocol ne 'https');
11261: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
11262: my $ua=new LWP::UserAgent;
11263: my $request=new HTTP::Request($reqtype,$uri);
11264: my $response=$ua->request($request);
11265: $$rtncode = $response->code;
11266: if (! $response->is_success()) {
11267: return 'failed';
11268: }
11269: if ($reqtype eq 'HEAD') {
11270: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
11271: } elsif ($reqtype eq 'GET') {
11272: $$info = $response->content;
11273: }
11274: return 'ok';
11275: }
11276:
11277: sub readfile {
11278: my $file = shift;
11279: if ( (! -e $file ) || ($file eq '') ) { return -1; };
11280: my $fh;
11281: open($fh,"<$file");
11282: my $a='';
11283: while (my $line = <$fh>) { $a .= $line; }
11284: return $a;
11285: }
11286:
11287: sub filelocation {
11288: my ($dir,$file) = @_;
11289: my $location;
11290: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
11291:
11292: if ($file =~ m-^/adm/-) {
11293: $file=~s-^/adm/wrapper/-/-;
11294: $file=~s-^/adm/coursedocs/showdoc/-/-;
11295: }
11296:
11297: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
11298: $location = $file;
11299: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
11300: my ($udom,$uname,$filename)=
11301: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
11302: my $home=&homeserver($uname,$udom);
11303: my $is_me=0;
11304: my @ids=¤t_machine_ids();
11305: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
11306: if ($is_me) {
11307: $location=propath($udom,$uname).'/userfiles/'.$filename;
11308: } else {
11309: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
11310: $udom.'/'.$uname.'/'.$filename;
11311: }
11312: } elsif ($file =~ m-^/adm/-) {
11313: $location = $perlvar{'lonDocRoot'}.'/'.$file;
11314: } else {
11315: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11316: $file=~s:^/(res|priv)/:/:;
11317: my $space=$1;
11318: if ( !( $file =~ m:^/:) ) {
11319: $location = $dir. '/'.$file;
11320: } else {
11321: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
11322: }
11323: }
11324: $location=~s://+:/:g; # remove duplicate /
11325: while ($location=~m{/\.\./}) {
11326: if ($location =~ m{/[^/]+/\.\./}) {
11327: $location=~ s{/[^/]+/\.\./}{/}g;
11328: } else {
11329: $location=~ s{/\.\./}{/}g;
11330: }
11331: } #remove dir/..
11332: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
11333: return $location;
11334: }
11335:
11336: sub hreflocation {
11337: my ($dir,$file)=@_;
11338: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
11339: $file=filelocation($dir,$file);
11340: } elsif ($file=~m-^/adm/-) {
11341: $file=~s-^/adm/wrapper/-/-;
11342: $file=~s-^/adm/coursedocs/showdoc/-/-;
11343: }
11344: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
11345: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
11346: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
11347: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
11348: {/uploaded/$1/$2/}x;
11349: }
11350: if ($file=~ m{^/userfiles/}) {
11351: $file =~ s{^/userfiles/}{/uploaded/};
11352: }
11353: return $file;
11354: }
11355:
11356:
11357:
11358:
11359:
11360: sub current_machine_domains {
11361: return &machine_domains(&hostname($perlvar{'lonHostID'}));
11362: }
11363:
11364: sub machine_domains {
11365: my ($hostname) = @_;
11366: my @domains;
11367: my %hostname = &all_hostnames();
11368: while( my($id, $name) = each(%hostname)) {
11369: # &logthis("-$id-$name-$hostname-");
11370: if ($hostname eq $name) {
11371: push(@domains,&host_domain($id));
11372: }
11373: }
11374: return @domains;
11375: }
11376:
11377: sub current_machine_ids {
11378: return &machine_ids(&hostname($perlvar{'lonHostID'}));
11379: }
11380:
11381: sub machine_ids {
11382: my ($hostname) = @_;
11383: $hostname ||= &hostname($perlvar{'lonHostID'});
11384: my @ids;
11385: my %name_to_host = &all_names();
11386: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
11387: return @{ $name_to_host{$hostname} };
11388: }
11389: return;
11390: }
11391:
11392: sub additional_machine_domains {
11393: my @domains;
11394: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
11395: while( my $line = <$fh>) {
11396: $line =~ s/\s//g;
11397: push(@domains,$line);
11398: }
11399: return @domains;
11400: }
11401:
11402: sub default_login_domain {
11403: my $domain = $perlvar{'lonDefDomain'};
11404: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
11405: foreach my $posdom (¤t_machine_domains(),
11406: &additional_machine_domains()) {
11407: if (lc($posdom) eq lc($testdomain)) {
11408: $domain=$posdom;
11409: last;
11410: }
11411: }
11412: return $domain;
11413: }
11414:
11415: # ------------------------------------------------------------- Declutters URLs
11416:
11417: sub declutter {
11418: my $thisfn=shift;
11419: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11420: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
11421: $thisfn=~s/^\///;
11422: $thisfn=~s|^adm/wrapper/||;
11423: $thisfn=~s|^adm/coursedocs/showdoc/||;
11424: $thisfn=~s/^res\///;
11425: $thisfn=~s/^priv\///;
11426: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
11427: $thisfn=~s/\?.+$//;
11428: }
11429: return $thisfn;
11430: }
11431:
11432: # ------------------------------------------------------------- Clutter up URLs
11433:
11434: sub clutter {
11435: my $thisfn='/'.&declutter(shift);
11436: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
11437: || $thisfn =~ m{^/adm/(includes|pages)} ) {
11438: $thisfn='/res'.$thisfn;
11439: }
11440: if ($thisfn !~m|^/adm|) {
11441: if ($thisfn =~ m|^/ext/|) {
11442: $thisfn='/adm/wrapper'.$thisfn;
11443: } else {
11444: my ($ext) = ($thisfn =~ /\.(\w+)$/);
11445: my $embstyle=&Apache::loncommon::fileembstyle($ext);
11446: if ($embstyle eq 'ssi'
11447: || ($embstyle eq 'hdn')
11448: || ($embstyle eq 'rat')
11449: || ($embstyle eq 'prv')
11450: || ($embstyle eq 'ign')) {
11451: #do nothing with these
11452: } elsif (($embstyle eq 'img')
11453: || ($embstyle eq 'emb')
11454: || ($embstyle eq 'wrp')) {
11455: $thisfn='/adm/wrapper'.$thisfn;
11456: } elsif ($embstyle eq 'unk'
11457: && $thisfn!~/\.(sequence|page)$/) {
11458: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
11459: } else {
11460: # &logthis("Got a blank emb style");
11461: }
11462: }
11463: }
11464: return $thisfn;
11465: }
11466:
11467: sub clutter_with_no_wrapper {
11468: my $uri = &clutter(shift);
11469: if ($uri =~ m-^/adm/-) {
11470: $uri =~ s-^/adm/wrapper/-/-;
11471: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
11472: }
11473: return $uri;
11474: }
11475:
11476: sub freeze_escape {
11477: my ($value)=@_;
11478: if (ref($value)) {
11479: $value=&nfreeze($value);
11480: return '__FROZEN__'.&escape($value);
11481: }
11482: return &escape($value);
11483: }
11484:
11485:
11486: sub thaw_unescape {
11487: my ($value)=@_;
11488: if ($value =~ /^__FROZEN__/) {
11489: substr($value,0,10,undef);
11490: $value=&unescape($value);
11491: return &thaw($value);
11492: }
11493: return &unescape($value);
11494: }
11495:
11496: sub correct_line_ends {
11497: my ($result)=@_;
11498: $$result =~s/\r\n/\n/mg;
11499: $$result =~s/\r/\n/mg;
11500: }
11501: # ================================================================ Main Program
11502:
11503: sub goodbye {
11504: &logthis("Starting Shut down");
11505: #not converted to using infrastruture and probably shouldn't be
11506: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
11507: #converted
11508: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
11509: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
11510: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
11511: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
11512: #1.1 only
11513: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
11514: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
11515: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
11516: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
11517: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
11518: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
11519: &logthis(sprintf("%-20s is %s",'hits',$hits));
11520: &flushcourselogs();
11521: &logthis("Shutting down");
11522: }
11523:
11524: sub get_dns {
11525: my ($url,$func,$ignore_cache) = @_;
11526: if (!$ignore_cache) {
11527: my ($content,$cached)=
11528: &Apache::lonnet::is_cached_new('dns',$url);
11529: if ($cached) {
11530: &$func($content);
11531: return;
11532: }
11533: }
11534:
11535: my %alldns;
11536: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11537: foreach my $dns (<$config>) {
11538: next if ($dns !~ /^\^(\S*)/x);
11539: my $line = $1;
11540: my ($host,$protocol) = split(/:/,$line);
11541: if ($protocol ne 'https') {
11542: $protocol = 'http';
11543: }
11544: $alldns{$host} = $protocol;
11545: }
11546: while (%alldns) {
11547: my ($dns) = keys(%alldns);
11548: my $ua=new LWP::UserAgent;
11549: $ua->timeout(30);
11550: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
11551: my $response=$ua->request($request);
11552: delete($alldns{$dns});
11553: next if ($response->is_error());
11554: my @content = split("\n",$response->content);
11555: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
11556: &$func(\@content);
11557: return;
11558: }
11559: close($config);
11560: my $which = (split('/',$url))[3];
11561: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
11562: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
11563: my @content = <$config>;
11564: &$func(\@content);
11565: return;
11566: }
11567: # ------------------------------------------------------------ Read domain file
11568: {
11569: my $loaded;
11570: my %domain;
11571:
11572: sub parse_domain_tab {
11573: my ($lines) = @_;
11574: foreach my $line (@$lines) {
11575: next if ($line =~ /^(\#|\s*$ )/x);
11576:
11577: chomp($line);
11578: my ($name,@elements) = split(/:/,$line,9);
11579: my %this_domain;
11580: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11581: 'lang_def', 'city', 'longi', 'lati',
11582: 'primary') {
11583: $this_domain{$field} = shift(@elements);
11584: }
11585: $domain{$name} = \%this_domain;
11586: }
11587: }
11588:
11589: sub reset_domain_info {
11590: undef($loaded);
11591: undef(%domain);
11592: }
11593:
11594: sub load_domain_tab {
11595: my ($ignore_cache) = @_;
11596: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11597: my $fh;
11598: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11599: my @lines = <$fh>;
11600: &parse_domain_tab(\@lines);
11601: }
11602: close($fh);
11603: $loaded = 1;
11604: }
11605:
11606: sub domain {
11607: &load_domain_tab() if (!$loaded);
11608:
11609: my ($name,$what) = @_;
11610: return if ( !exists($domain{$name}) );
11611:
11612: if (!$what) {
11613: return $domain{$name}{'description'};
11614: }
11615: return $domain{$name}{$what};
11616: }
11617:
11618: sub domain_info {
11619: &load_domain_tab() if (!$loaded);
11620: return %domain;
11621: }
11622:
11623: }
11624:
11625:
11626: # ------------------------------------------------------------- Read hosts file
11627: {
11628: my %hostname;
11629: my %hostdom;
11630: my %libserv;
11631: my $loaded;
11632: my %name_to_host;
11633: my %internetdom;
11634: my %LC_dns_serv;
11635:
11636: sub parse_hosts_tab {
11637: my ($file) = @_;
11638: foreach my $configline (@$file) {
11639: next if ($configline =~ /^(\#|\s*$ )/x);
11640: chomp($configline);
11641: if ($configline =~ /^\^/) {
11642: if ($configline =~ /^\^([\w.\-]+)/) {
11643: $LC_dns_serv{$1} = 1;
11644: }
11645: next;
11646: }
11647: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11648: $name=~s/\s//g;
11649: if ($id && $domain && $role && $name) {
11650: $hostname{$id}=$name;
11651: push(@{$name_to_host{$name}}, $id);
11652: $hostdom{$id}=$domain;
11653: if ($role eq 'library') { $libserv{$id}=$name; }
11654: if (defined($protocol)) {
11655: if ($protocol eq 'https') {
11656: $protocol{$id} = $protocol;
11657: } else {
11658: $protocol{$id} = 'http';
11659: }
11660: } else {
11661: $protocol{$id} = 'http';
11662: }
11663: if (defined($intdom)) {
11664: $internetdom{$id} = $intdom;
11665: }
11666: }
11667: }
11668: }
11669:
11670: sub reset_hosts_info {
11671: &purge_remembered();
11672: &reset_domain_info();
11673: &reset_hosts_ip_info();
11674: undef(%name_to_host);
11675: undef(%hostname);
11676: undef(%hostdom);
11677: undef(%libserv);
11678: undef($loaded);
11679: }
11680:
11681: sub load_hosts_tab {
11682: my ($ignore_cache) = @_;
11683: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11684: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11685: my @config = <$config>;
11686: &parse_hosts_tab(\@config);
11687: close($config);
11688: $loaded=1;
11689: }
11690:
11691: sub hostname {
11692: &load_hosts_tab() if (!$loaded);
11693:
11694: my ($lonid) = @_;
11695: return $hostname{$lonid};
11696: }
11697:
11698: sub all_hostnames {
11699: &load_hosts_tab() if (!$loaded);
11700:
11701: return %hostname;
11702: }
11703:
11704: sub all_names {
11705: &load_hosts_tab() if (!$loaded);
11706:
11707: return %name_to_host;
11708: }
11709:
11710: sub all_host_domain {
11711: &load_hosts_tab() if (!$loaded);
11712: return %hostdom;
11713: }
11714:
11715: sub is_library {
11716: &load_hosts_tab() if (!$loaded);
11717:
11718: return exists($libserv{$_[0]});
11719: }
11720:
11721: sub all_library {
11722: &load_hosts_tab() if (!$loaded);
11723:
11724: return %libserv;
11725: }
11726:
11727: sub unique_library {
11728: #2x reverse removes all hostnames that appear more than once
11729: my %unique = reverse &all_library();
11730: return reverse %unique;
11731: }
11732:
11733: sub get_servers {
11734: &load_hosts_tab() if (!$loaded);
11735:
11736: my ($domain,$type) = @_;
11737: my %possible_hosts = ($type eq 'library') ? %libserv
11738: : %hostname;
11739: my %result;
11740: if (ref($domain) eq 'ARRAY') {
11741: while ( my ($host,$hostname) = each(%possible_hosts)) {
11742: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11743: $result{$host} = $hostname;
11744: }
11745: }
11746: } else {
11747: while ( my ($host,$hostname) = each(%possible_hosts)) {
11748: if ($hostdom{$host} eq $domain) {
11749: $result{$host} = $hostname;
11750: }
11751: }
11752: }
11753: return %result;
11754: }
11755:
11756: sub get_unique_servers {
11757: my %unique = reverse &get_servers(@_);
11758: return reverse %unique;
11759: }
11760:
11761: sub host_domain {
11762: &load_hosts_tab() if (!$loaded);
11763:
11764: my ($lonid) = @_;
11765: return $hostdom{$lonid};
11766: }
11767:
11768: sub all_domains {
11769: &load_hosts_tab() if (!$loaded);
11770:
11771: my %seen;
11772: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11773: return @uniq;
11774: }
11775:
11776: sub internet_dom {
11777: &load_hosts_tab() if (!$loaded);
11778:
11779: my ($lonid) = @_;
11780: return $internetdom{$lonid};
11781: }
11782:
11783: sub is_LC_dns {
11784: &load_hosts_tab() if (!$loaded);
11785:
11786: my ($hostname) = @_;
11787: return exists($LC_dns_serv{$hostname});
11788: }
11789:
11790: }
11791:
11792: {
11793: my %iphost;
11794: my %name_to_ip;
11795: my %lonid_to_ip;
11796:
11797: sub get_hosts_from_ip {
11798: my ($ip) = @_;
11799: my %iphosts = &get_iphost();
11800: if (ref($iphosts{$ip})) {
11801: return @{$iphosts{$ip}};
11802: }
11803: return;
11804: }
11805:
11806: sub reset_hosts_ip_info {
11807: undef(%iphost);
11808: undef(%name_to_ip);
11809: undef(%lonid_to_ip);
11810: }
11811:
11812: sub get_host_ip {
11813: my ($lonid) = @_;
11814: if (exists($lonid_to_ip{$lonid})) {
11815: return $lonid_to_ip{$lonid};
11816: }
11817: my $name=&hostname($lonid);
11818: my $ip = gethostbyname($name);
11819: return if (!$ip || length($ip) ne 4);
11820: $ip=inet_ntoa($ip);
11821: $name_to_ip{$name} = $ip;
11822: $lonid_to_ip{$lonid} = $ip;
11823: return $ip;
11824: }
11825:
11826: sub get_iphost {
11827: my ($ignore_cache) = @_;
11828:
11829: if (!$ignore_cache) {
11830: if (%iphost) {
11831: return %iphost;
11832: }
11833: my ($ip_info,$cached)=
11834: &Apache::lonnet::is_cached_new('iphost','iphost');
11835: if ($cached) {
11836: %iphost = %{$ip_info->[0]};
11837: %name_to_ip = %{$ip_info->[1]};
11838: %lonid_to_ip = %{$ip_info->[2]};
11839: return %iphost;
11840: }
11841: }
11842:
11843: # get yesterday's info for fallback
11844: my %old_name_to_ip;
11845: my ($ip_info,$cached)=
11846: &Apache::lonnet::is_cached_new('iphost','iphost');
11847: if ($cached) {
11848: %old_name_to_ip = %{$ip_info->[1]};
11849: }
11850:
11851: my %name_to_host = &all_names();
11852: foreach my $name (keys(%name_to_host)) {
11853: my $ip;
11854: if (!exists($name_to_ip{$name})) {
11855: $ip = gethostbyname($name);
11856: if (!$ip || length($ip) ne 4) {
11857: if (defined($old_name_to_ip{$name})) {
11858: $ip = $old_name_to_ip{$name};
11859: &logthis("Can't find $name defaulting to old $ip");
11860: } else {
11861: &logthis("Name $name no IP found");
11862: next;
11863: }
11864: } else {
11865: $ip=inet_ntoa($ip);
11866: }
11867: $name_to_ip{$name} = $ip;
11868: } else {
11869: $ip = $name_to_ip{$name};
11870: }
11871: foreach my $id (@{ $name_to_host{$name} }) {
11872: $lonid_to_ip{$id} = $ip;
11873: }
11874: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11875: }
11876: &Apache::lonnet::do_cache_new('iphost','iphost',
11877: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11878: 48*60*60);
11879:
11880: return %iphost;
11881: }
11882:
11883: #
11884: # Given a DNS returns the loncapa host name for that DNS
11885: #
11886: sub host_from_dns {
11887: my ($dns) = @_;
11888: my @hosts;
11889: my $ip;
11890:
11891: if (exists($name_to_ip{$dns})) {
11892: $ip = $name_to_ip{$dns};
11893: }
11894: if (!$ip) {
11895: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11896: if (length($ip) == 4) {
11897: $ip = &IO::Socket::inet_ntoa($ip);
11898: }
11899: }
11900: if ($ip) {
11901: @hosts = get_hosts_from_ip($ip);
11902: return $hosts[0];
11903: }
11904: return undef;
11905: }
11906:
11907: sub get_internet_names {
11908: my ($lonid) = @_;
11909: return if ($lonid eq '');
11910: my ($idnref,$cached)=
11911: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11912: if ($cached) {
11913: return $idnref;
11914: }
11915: my $ip = &get_host_ip($lonid);
11916: my @hosts = &get_hosts_from_ip($ip);
11917: my %iphost = &get_iphost();
11918: my (@idns,%seen);
11919: foreach my $id (@hosts) {
11920: my $dom = &host_domain($id);
11921: my $prim_id = &domain($dom,'primary');
11922: my $prim_ip = &get_host_ip($prim_id);
11923: next if ($seen{$prim_ip});
11924: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11925: foreach my $id (@{$iphost{$prim_ip}}) {
11926: my $intdom = &internet_dom($id);
11927: unless (grep(/^\Q$intdom\E$/,@idns)) {
11928: push(@idns,$intdom);
11929: }
11930: }
11931: }
11932: $seen{$prim_ip} = 1;
11933: }
11934: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11935: }
11936:
11937: }
11938:
11939: sub all_loncaparevs {
11940: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11941: }
11942:
11943: BEGIN {
11944:
11945: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11946: unless ($readit) {
11947: {
11948: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11949: %perlvar = (%perlvar,%{$configvars});
11950: }
11951:
11952:
11953: # ------------------------------------------------------ Read spare server file
11954: {
11955: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11956:
11957: while (my $configline=<$config>) {
11958: chomp($configline);
11959: if ($configline) {
11960: my ($host,$type) = split(':',$configline,2);
11961: if (!defined($type) || $type eq '') { $type = 'default' };
11962: push(@{ $spareid{$type} }, $host);
11963: }
11964: }
11965: close($config);
11966: }
11967: # ------------------------------------------------------------ Read permissions
11968: {
11969: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11970:
11971: while (my $configline=<$config>) {
11972: chomp($configline);
11973: if ($configline) {
11974: my ($role,$perm)=split(/ /,$configline);
11975: if ($perm ne '') { $pr{$role}=$perm; }
11976: }
11977: }
11978: close($config);
11979: }
11980:
11981: # -------------------------------------------- Read plain texts for permissions
11982: {
11983: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11984:
11985: while (my $configline=<$config>) {
11986: chomp($configline);
11987: if ($configline) {
11988: my ($short,@plain)=split(/:/,$configline);
11989: %{$prp{$short}} = ();
11990: if (@plain > 0) {
11991: $prp{$short}{'std'} = $plain[0];
11992: for (my $i=1; $i<@plain; $i++) {
11993: $prp{$short}{'alt'.$i} = $plain[$i];
11994: }
11995: }
11996: }
11997: }
11998: close($config);
11999: }
12000:
12001: # ---------------------------------------------------------- Read package table
12002: {
12003: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12004:
12005: while (my $configline=<$config>) {
12006: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12007: chomp($configline);
12008: my ($short,$plain)=split(/:/,$configline);
12009: my ($pack,$name)=split(/\&/,$short);
12010: if ($plain ne '') {
12011: $packagetab{$pack.'&'.$name.'&name'}=$name;
12012: $packagetab{$short}=$plain;
12013: }
12014: }
12015: close($config);
12016: }
12017:
12018: # ---------------------------------------------------------- Read loncaparev table
12019: {
12020: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12021: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12022: while (my $configline=<$config>) {
12023: chomp($configline);
12024: my ($hostid,$loncaparev)=split(/:/,$configline);
12025: $loncaparevs{$hostid}=$loncaparev;
12026: }
12027: close($config);
12028: }
12029: }
12030: }
12031:
12032: # ---------------------------------------------------------- Read serverhostID table
12033: {
12034: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12035: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12036: while (my $configline=<$config>) {
12037: chomp($configline);
12038: my ($name,$id)=split(/:/,$configline);
12039: $serverhomeIDs{$name}=$id;
12040: }
12041: close($config);
12042: }
12043: }
12044: }
12045:
12046: {
12047: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12048: if (-e $file) {
12049: my $parser = HTML::LCParser->new($file);
12050: while (my $token = $parser->get_token()) {
12051: if ($token->[0] eq 'S') {
12052: my $item = $token->[1];
12053: my $name = $token->[2]{'name'};
12054: my $value = $token->[2]{'value'};
12055: if ($item ne '' && $name ne '' && $value ne '') {
12056: my $release = $parser->get_text();
12057: $release =~ s/(^\s*|\s*$ )//gx;
12058: $needsrelease{$item.':'.$name.':'.$value} = $release;
12059: }
12060: }
12061: }
12062: }
12063: }
12064:
12065: # ---------------------------------------------------------- Read managers table
12066: {
12067: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12068: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12069: while (my $configline=<$config>) {
12070: chomp($configline);
12071: next if ($configline =~ /^\#/);
12072: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12073: $managerstab{$configline} = 1;
12074: }
12075: }
12076: close($config);
12077: }
12078: }
12079: }
12080:
12081: # ------------- set up temporary directory
12082: {
12083: $tmpdir = LONCAPA::tempdir();
12084:
12085: }
12086:
12087: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12088: 'compress_threshold'=> 20_000,
12089: });
12090:
12091: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12092: $dumpcount=0;
12093: $locknum=0;
12094:
12095: &logtouch();
12096: &logthis('<font color="yellow">INFO: Read configuration</font>');
12097: $readit=1;
12098: {
12099: use integer;
12100: my $test=(2**32)+1;
12101: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12102: &logthis(" Detected 64bit platform ($_64bit)");
12103: }
12104: }
12105: }
12106:
12107: 1;
12108: __END__
12109:
12110: =pod
12111:
12112: =head1 NAME
12113:
12114: Apache::lonnet - Subroutines to ask questions about things in the network.
12115:
12116: =head1 SYNOPSIS
12117:
12118: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12119:
12120: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12121:
12122: Common parameters:
12123:
12124: =over 4
12125:
12126: =item *
12127:
12128: $uname : an internal username (if $cname expecting a course Id specifically)
12129:
12130: =item *
12131:
12132: $udom : a domain (if $cdom expecting a course's domain specifically)
12133:
12134: =item *
12135:
12136: $symb : a resource instance identifier
12137:
12138: =item *
12139:
12140: $namespace : the name of a .db file that contains the data needed or
12141: being set.
12142:
12143: =back
12144:
12145: =head1 OVERVIEW
12146:
12147: lonnet provides subroutines which interact with the
12148: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12149: about classes, users, and resources.
12150:
12151: For many of these objects you can also use this to store data about
12152: them or modify them in various ways.
12153:
12154: =head2 Symbs
12155:
12156: To identify a specific instance of a resource, LON-CAPA uses symbols
12157: or "symbs"X<symb>. These identifiers are built from the URL of the
12158: map, the resource number of the resource in the map, and the URL of
12159: the resource itself. The latter is somewhat redundant, but might help
12160: if maps change.
12161:
12162: An example is
12163:
12164: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12165:
12166: The respective map entry is
12167:
12168: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12169: title="Problem 2">
12170: </resource>
12171:
12172: Symbs are used by the random number generator, as well as to store and
12173: restore data specific to a certain instance of for example a problem.
12174:
12175: =head2 Storing And Retrieving Data
12176:
12177: X<store()>X<cstore()>X<restore()>Three of the most important functions
12178: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12179: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12180: is is the non-critical message twin of cstore. These functions are for
12181: handlers to store a perl hash to a user's permanent data space in an
12182: easy manner, and to retrieve it again on another call. It is expected
12183: that a handler would use this once at the beginning to retrieve data,
12184: and then again once at the end to send only the new data back.
12185:
12186: The data is stored in the user's data directory on the user's
12187: homeserver under the ID of the course.
12188:
12189: The hash that is returned by restore will have all of the previous
12190: value for all of the elements of the hash.
12191:
12192: Example:
12193:
12194: #creating a hash
12195: my %hash;
12196: $hash{'foo'}='bar';
12197:
12198: #storing it
12199: &Apache::lonnet::cstore(\%hash);
12200:
12201: #changing a value
12202: $hash{'foo'}='notbar';
12203:
12204: #adding a new value
12205: $hash{'bar'}='foo';
12206: &Apache::lonnet::cstore(\%hash);
12207:
12208: #retrieving the hash
12209: my %history=&Apache::lonnet::restore();
12210:
12211: #print the hash
12212: foreach my $key (sort(keys(%history))) {
12213: print("\%history{$key} = $history{$key}");
12214: }
12215:
12216: Will print out:
12217:
12218: %history{1:foo} = bar
12219: %history{1:keys} = foo:timestamp
12220: %history{1:timestamp} = 990455579
12221: %history{2:bar} = foo
12222: %history{2:foo} = notbar
12223: %history{2:keys} = foo:bar:timestamp
12224: %history{2:timestamp} = 990455580
12225: %history{bar} = foo
12226: %history{foo} = notbar
12227: %history{timestamp} = 990455580
12228: %history{version} = 2
12229:
12230: Note that the special hash entries C<keys>, C<version> and
12231: C<timestamp> were added to the hash. C<version> will be equal to the
12232: total number of versions of the data that have been stored. The
12233: C<timestamp> attribute will be the UNIX time the hash was
12234: stored. C<keys> is available in every historical section to list which
12235: keys were added or changed at a specific historical revision of a
12236: hash.
12237:
12238: B<Warning>: do not store the hash that restore returns directly. This
12239: will cause a mess since it will restore the historical keys as if the
12240: were new keys. I.E. 1:foo will become 1:1:foo etc.
12241:
12242: Calling convention:
12243:
12244: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
12245: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
12246:
12247: For more detailed information, see lonnet specific documentation.
12248:
12249: =head1 RETURN MESSAGES
12250:
12251: =over 4
12252:
12253: =item * B<con_lost>: unable to contact remote host
12254:
12255: =item * B<con_delayed>: unable to contact remote host, message will be delivered
12256: when the connection is brought back up
12257:
12258: =item * B<con_failed>: unable to contact remote host and unable to save message
12259: for later delivery
12260:
12261: =item * B<error:>: an error a occurred, a description of the error follows the :
12262:
12263: =item * B<no_such_host>: unable to fund a host associated with the user/domain
12264: that was requested
12265:
12266: =back
12267:
12268: =head1 PUBLIC SUBROUTINES
12269:
12270: =head2 Session Environment Functions
12271:
12272: =over 4
12273:
12274: =item *
12275: X<appenv()>
12276: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
12277: the user envirnoment file, and will be restored for each access this
12278: user makes during this session, also modifies the %env for the current
12279: process. Optional rolesarrayref - if defined contains a reference to an array
12280: of roles which are exempt from the restriction on modifying user.role entries
12281: in the user's environment.db and in %env.
12282:
12283: =item *
12284: X<delenv()>
12285: B<delenv($delthis,$regexp)>: removes all items from the session
12286: environment file that begin with $delthis. If the
12287: optional second arg - $regexp - is true, $delthis is treated as a
12288: regular expression, otherwise \Q$delthis\E is used.
12289: The values are also deleted from the current processes %env.
12290:
12291: =item * get_env_multiple($name)
12292:
12293: gets $name from the %env hash, it seemlessly handles the cases where multiple
12294: values may be defined and end up as an array ref.
12295:
12296: returns an array of values
12297:
12298: =back
12299:
12300: =head2 User Information
12301:
12302: =over 4
12303:
12304: =item *
12305: X<queryauthenticate()>
12306: B<queryauthenticate($uname,$udom)>: try to determine user's current
12307: authentication scheme
12308:
12309: =item *
12310: X<authenticate()>
12311: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
12312: authenticate user from domain's lib servers (first use the current
12313: one). C<$upass> should be the users password.
12314: $checkdefauth is optional (value is 1 if a check should be made to
12315: authenticate user using default authentication method, and allow
12316: account creation if username does not have account in the domain).
12317: $clientcancheckhost is optional (value is 1 if checking whether the
12318: server can host will occur on the client side in lonauth.pm).
12319:
12320: =item *
12321: X<homeserver()>
12322: B<homeserver($uname,$udom)>: find the server which has
12323: the user's directory and files (there must be only one), this caches
12324: the answer, and also caches if there is a borken connection.
12325:
12326: =item *
12327: X<idget()>
12328: B<idget($udom,@ids)>: find the usernames behind a list of IDs
12329: (IDs are a unique resource in a domain, there must be only 1 ID per
12330: username, and only 1 username per ID in a specific domain) (returns
12331: hash: id=>name,id=>name)
12332:
12333: =item *
12334: X<idrget()>
12335: B<idrget($udom,@unames)>: find the IDs behind a list of
12336: usernames (returns hash: name=>id,name=>id)
12337:
12338: =item *
12339: X<idput()>
12340: B<idput($udom,%ids)>: store away a list of names and associated IDs
12341:
12342: =item *
12343: X<rolesinit()>
12344: B<rolesinit($udom,$username)>: get user privileges.
12345: returns user role, first access and timer interval hashes
12346:
12347: =item *
12348: X<privileged()>
12349: B<privileged($username,$domain)>: returns a true if user has a
12350: privileged and active role (i.e. su or dc), false otherwise.
12351:
12352: =item *
12353: X<getsection()>
12354: B<getsection($udom,$uname,$cname)>: finds the section of student in the
12355: course $cname, return section name/number or '' for "not in course"
12356: and '-1' for "no section"
12357:
12358: =item *
12359: X<userenvironment()>
12360: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
12361: passed in @what from the requested user's environment, returns a hash
12362:
12363: =item *
12364: X<userlog_query()>
12365: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
12366: activity.log file. %filters defines filters applied when parsing the
12367: log file. These can be start or end timestamps, or the type of action
12368: - log to look for Login or Logout events, check for Checkin or
12369: Checkout, role for role selection. The response is in the form
12370: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
12371: escaped strings of the action recorded in the activity.log file.
12372:
12373: =back
12374:
12375: =head2 User Roles
12376:
12377: =over 4
12378:
12379: =item *
12380:
12381: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
12382: F: full access
12383: U,I,K: authentication modes (cxx only)
12384: '': forbidden
12385: 1: user needs to choose course
12386: 2: browse allowed
12387: A: passphrase authentication needed
12388:
12389: =item *
12390:
12391: constructaccess($url,$setpriv) : check for access to construction space URL
12392:
12393: See if the owner domain and name in the URL match those in the
12394: expected environment. If so, return three element list
12395: ($ownername,$ownerdomain,$ownerhome).
12396:
12397: Otherwise return the null string.
12398:
12399: If second argument 'setpriv' is true, it assigns the privileges,
12400: and returns the same three element list, unless the owner has
12401: blocked "ad hoc" Domain Coordinator access to the Author Space,
12402: in which case the null string is returned.
12403:
12404: =item *
12405:
12406: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
12407: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
12408: and course level
12409:
12410: =item *
12411:
12412: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
12413: (rolesplain.tab); plain text explanation of a user role term.
12414: $type is Course (default) or Community.
12415: If $forcedefault evaluates to true, text returned will be default
12416: text for $type. Otherwise, if this is a course, the text returned
12417: will be a custom name for the role (if defined in the course's
12418: environment). If no custom name is defined the default is returned.
12419:
12420: =item *
12421:
12422: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
12423: All arguments are optional. Returns a hash of a roles, either for
12424: co-author/assistant author roles for a user's Construction Space
12425: (default), or if $context is 'userroles', roles for the user himself,
12426: In the hash, keys are set to colon-separated $uname,$udom,$role, and
12427: (optionally) if $withsec is true, a fourth colon-separated item - $section.
12428: For each key, value is set to colon-separated start and end times for
12429: the role. If no username and domain are specified, will default to
12430: current user/domain. Types, roles, and roledoms are references to arrays
12431: of role statuses (active, future or previous), roles
12432: (e.g., cc,in, st etc.) and domains of the roles which can be used
12433: to restrict the list of roles reported. If no array ref is
12434: provided for types, will default to return only active roles.
12435:
12436: =item *
12437:
12438: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
12439: user: $uname:$udom has a role in the course: $cdom_$cnum.
12440:
12441: Additional optional arguments are: $type (if role checking is to be restricted
12442: to certain user status types -- previous (expired roles), active (currently
12443: available roles) or future (roles available in the future), and
12444: $hideprivileged -- if true will not report course roles for users who
12445: have active Domain Coordinator or Super User roles.
12446:
12447: =back
12448:
12449: =head2 User Modification
12450:
12451: =over 4
12452:
12453: =item *
12454:
12455: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
12456: user for the level given by URL. Optional start and end dates (leave empty
12457: string or zero for "no date")
12458:
12459: =item *
12460:
12461: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
12462: change a users, password, possible return values are: ok,
12463: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
12464: refused
12465:
12466: =item *
12467:
12468: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
12469:
12470: =item *
12471:
12472: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
12473: $forceid,$desiredhome,$email,$inststatus,$candelete) :
12474:
12475: will update user information (firstname,middlename,lastname,generation,
12476: permanentemail), and if forceid is true, student/employee ID also.
12477: A user's institutional affiliation(s) can also be updated.
12478: User information fields will not be overwritten with empty entries
12479: unless the field is included in the $candelete array reference.
12480: This array is included when a single user is modified via "Manage Users",
12481: or when Autoupdate.pl is run by cron in a domain.
12482:
12483: =item *
12484:
12485: modifystudent
12486:
12487: modify a student's enrollment and identification information.
12488: The course id is resolved based on the current users environment.
12489: This means the envoking user must be a course coordinator or otherwise
12490: associated with a course.
12491:
12492: This call is essentially a wrapper for lonnet::modifyuser and
12493: lonnet::modify_student_enrollment
12494:
12495: Inputs:
12496:
12497: =over 4
12498:
12499: =item B<$udom> Student's loncapa domain
12500:
12501: =item B<$uname> Student's loncapa login name
12502:
12503: =item B<$uid> Student/Employee ID
12504:
12505: =item B<$umode> Student's authentication mode
12506:
12507: =item B<$upass> Student's password
12508:
12509: =item B<$first> Student's first name
12510:
12511: =item B<$middle> Student's middle name
12512:
12513: =item B<$last> Student's last name
12514:
12515: =item B<$gene> Student's generation
12516:
12517: =item B<$usec> Student's section in course
12518:
12519: =item B<$end> Unix time of the roles expiration
12520:
12521: =item B<$start> Unix time of the roles start date
12522:
12523: =item B<$forceid> If defined, allow $uid to be changed
12524:
12525: =item B<$desiredhome> server to use as home server for student
12526:
12527: =item B<$email> Student's permanent e-mail address
12528:
12529: =item B<$type> Type of enrollment (auto or manual)
12530:
12531: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
12532:
12533: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
12534:
12535: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
12536:
12537: =item B<$context> role change context (shown in User Management Logs display in a course)
12538:
12539: =item B<$inststatus> institutional status of user - : separated string of escaped status types
12540:
12541: =back
12542:
12543: =item *
12544:
12545: modify_student_enrollment
12546:
12547: Change a students enrollment status in a class. The environment variable
12548: 'role.request.course' must be defined for this function to proceed.
12549:
12550: Inputs:
12551:
12552: =over 4
12553:
12554: =item $udom, students domain
12555:
12556: =item $uname, students name
12557:
12558: =item $uid, students user id
12559:
12560: =item $first, students first name
12561:
12562: =item $middle
12563:
12564: =item $last
12565:
12566: =item $gene
12567:
12568: =item $usec
12569:
12570: =item $end
12571:
12572: =item $start
12573:
12574: =item $type
12575:
12576: =item $locktype
12577:
12578: =item $cid
12579:
12580: =item $selfenroll
12581:
12582: =item $context
12583:
12584: =back
12585:
12586:
12587: =item *
12588:
12589: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
12590: custom role; give a custom role to a user for the level given by URL. Specify
12591: name and domain of role author, and role name
12592:
12593: =item *
12594:
12595: revokerole($udom,$uname,$url,$role) : revoke a role for url
12596:
12597: =item *
12598:
12599: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12600:
12601: =back
12602:
12603: =head2 Course Infomation
12604:
12605: =over 4
12606:
12607: =item *
12608:
12609: coursedescription($courseid,$options) : returns a hash of information about the
12610: specified course id, including all environment settings for the
12611: course, the description of the course will be in the hash under the
12612: key 'description'
12613:
12614: $options is an optional parameter that if supplied is a hash reference that controls
12615: what how this function works. It has the following key/values:
12616:
12617: =over 4
12618:
12619: =item freshen_cache
12620:
12621: If defined, and the environment cache for the course is valid, it is
12622: returned in the returned hash.
12623:
12624: =item one_time
12625:
12626: If defined, the last cache time is set to _now_
12627:
12628: =item user
12629:
12630: If defined, the supplied username is used instead of the current user.
12631:
12632:
12633: =back
12634:
12635: =item *
12636:
12637: resdata($name,$domain,$type,@which) : request for current parameter
12638: setting for a specific $type, where $type is either 'course' or 'user',
12639: @what should be a list of parameters to ask about. This routine caches
12640: answers for 5 minutes.
12641:
12642: =item *
12643:
12644: get_courseresdata($courseid, $domain) : dump the entire course resource
12645: data base, returning a hash that is keyed by the resource name and has
12646: values that are the resource value. I believe that the timestamps and
12647: versions are also returned.
12648:
12649: =back
12650:
12651: =head2 Course Modification
12652:
12653: =over 4
12654:
12655: =item *
12656:
12657: writecoursepref($courseid,%prefs) : write preferences (environment
12658: database) for a course
12659:
12660: =item *
12661:
12662: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12663:
12664: =item *
12665:
12666: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12667:
12668: =item *
12669:
12670: is_course($courseid), is_course($cdom, $cnum)
12671:
12672: Accepts either a combined $courseid (in the form of domain_courseid) or the
12673: two component version $cdom, $cnum. It checks if the specified course exists.
12674:
12675: Returns:
12676: undef if the course doesn't exist, otherwise
12677: in scalar context the combined courseid.
12678: in list context the two components of the course identifier, domain and
12679: courseid.
12680:
12681: =back
12682:
12683: =head2 Resource Subroutines
12684:
12685: =over 4
12686:
12687: =item *
12688:
12689: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12690:
12691: =item *
12692:
12693: repcopy($filename) : subscribes to the requested file, and attempts to
12694: replicate from the owning library server, Might return
12695: 'unavailable', 'not_found', 'forbidden', 'ok', or
12696: 'bad_request', also attempts to grab the metadata for the
12697: resource. Expects the local filesystem pathname
12698: (/home/httpd/html/res/....)
12699:
12700: =back
12701:
12702: =head2 Resource Information
12703:
12704: =over 4
12705:
12706: =item *
12707:
12708: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12709: a vairety of different possible values, $varname should be a request
12710: string, and the other parameters can be used to specify who and what
12711: one is asking about.
12712:
12713: Possible values for $varname are environment.lastname (or other item
12714: from the envirnment hash), user.name (or someother aspect about the
12715: user), resource.0.maxtries (or some other part and parameter of a
12716: resource)
12717:
12718: =item *
12719:
12720: directcondval($number) : get current value of a condition; reads from a state
12721: string
12722:
12723: =item *
12724:
12725: condval($condidx) : value of condition index based on state
12726:
12727: =item *
12728:
12729: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12730: resource's metadata, $what should be either a specific key, or either
12731: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12732: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12733:
12734: this function automatically caches all requests
12735:
12736: =item *
12737:
12738: metadata_query($query,$custom,$customshow) : make a metadata query against the
12739: network of library servers; returns file handle of where SQL and regex results
12740: will be stored for query
12741:
12742: =item *
12743:
12744: symbread($filename) : return symbolic list entry (filename argument optional);
12745: returns the data handle
12746:
12747: =item *
12748:
12749: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
12750: and is a possible symb for the URL in $thisfn, and if is an encrypted
12751: resource that the user accessed using /enc/ returns a 1 on success, 0
12752: on failure, user must be in a course, as it assumes the existence of
12753: the course initial hash, and uses $env('request.course.id'}. The third
12754: arg is an optional reference to a scalar. If this arg is passed in the
12755: call to symbverify, it will be set to 1 if the symb has been set to be
12756: encrypted; otherwise it will be null.
12757:
12758: =item *
12759:
12760: symbclean($symb) : removes versions numbers from a symb, returns the
12761: cleaned symb
12762:
12763: =item *
12764:
12765: is_on_map($uri) : checks if the $uri is somewhere on the current
12766: course map, user must be in a course for it to work.
12767:
12768: =item *
12769:
12770: numval($salt) : return random seed value (addend for rndseed)
12771:
12772: =item *
12773:
12774: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12775: a random seed, all arguments are optional, if they aren't sent it uses the
12776: environment to derive them. Note: if symb isn't sent and it can't get one
12777: from &symbread it will use the current time as its return value
12778:
12779: =item *
12780:
12781: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12782: unfakeable, receipt
12783:
12784: =item *
12785:
12786: receipt() : API to ireceipt working off of env values; given out to users
12787:
12788: =item *
12789:
12790: countacc($url) : count the number of accesses to a given URL
12791:
12792: =item *
12793:
12794: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12795:
12796: =item *
12797:
12798: checkin($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 $tcrsid)
12799:
12800: =item *
12801:
12802: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12803:
12804: =item *
12805:
12806: devalidate($symb) : devalidate temporary spreadsheet calculations,
12807: forcing spreadsheet to reevaluate the resource scores next time.
12808:
12809: =item *
12810:
12811: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
12812: when viewing in course context.
12813:
12814: input: six args -- filename (decluttered), course number, course domain,
12815: url, symb (if registered) and group (if this is a
12816: group item -- e.g., bulletin board, group page etc.).
12817:
12818: output: array of five scalars --
12819: $cfile -- url for file editing if editable on current server
12820: $home -- homeserver of resource (i.e., for author if published,
12821: or course if uploaded.).
12822: $switchserver -- 1 if server switch will be needed.
12823: $forceedit -- 1 if icon/link should be to go to edit mode
12824: $forceview -- 1 if icon/link should be to go to view mode
12825:
12826: =item *
12827:
12828: is_course_upload($file,$cnum,$cdom)
12829:
12830: Used in course context to determine if current file was uploaded to
12831: the course (i.e., would be found in /userfiles/docs on the course's
12832: homeserver.
12833:
12834: input: 3 args -- filename (decluttered), course number and course domain.
12835: output: boolean -- 1 if file was uploaded.
12836:
12837: =back
12838:
12839: =head2 Storing/Retreiving Data
12840:
12841: =over 4
12842:
12843: =item *
12844:
12845: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12846: for this url; hashref needs to be given and should be a \%hashname; the
12847: remaining args aren't required and if they aren't passed or are '' they will
12848: be derived from the env
12849:
12850: =item *
12851:
12852: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12853: uses critical subroutine
12854:
12855: =item *
12856:
12857: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12858: all args are optional
12859:
12860: =item *
12861:
12862: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12863: dumps the complete (or key matching regexp) namespace into a hash
12864: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12865: normally &store()ed into
12866:
12867: $range should be either an integer '100' (give me the first 100
12868: matching records)
12869: or be two integers sperated by a - with no spaces
12870: '30-50' (give me the 30th through the 50th matching
12871: records)
12872:
12873:
12874: =item *
12875:
12876: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12877: replaces a &store() version of data with a replacement set of data
12878: for a particular resource in a namespace passed in the $storehash hash
12879: reference
12880:
12881: =item *
12882:
12883: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12884: works very similar to store/cstore, but all data is stored in a
12885: temporary location and can be reset using tmpreset, $storehash should
12886: be a hash reference, returns nothing on success
12887:
12888: =item *
12889:
12890: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12891: similar to restore, but all data is stored in a temporary location and
12892: can be reset using tmpreset. Returns a hash of values on success,
12893: error string otherwise.
12894:
12895: =item *
12896:
12897: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12898: deltes all keys for $symb form the temporary storage hash.
12899:
12900: =item *
12901:
12902: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12903: reference filled in from namesp ($udom and $uname are optional)
12904:
12905: =item *
12906:
12907: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12908: namesp ($udom and $uname are optional)
12909:
12910: =item *
12911:
12912: dump($namespace,$udom,$uname,$regexp,$range) :
12913: dumps the complete (or key matching regexp) namespace into a hash
12914: ($udom, $uname, $regexp, $range are optional)
12915:
12916: $range should be either an integer '100' (give me the first 100
12917: matching records)
12918: or be two integers sperated by a - with no spaces
12919: '30-50' (give me the 30th through the 50th matching
12920: records)
12921: =item *
12922:
12923: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12924: $store can be a scalar, an array reference, or if the amount to be
12925: incremented is > 1, a hash reference.
12926:
12927: ($udom and $uname are optional)
12928:
12929: =item *
12930:
12931: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12932: ($udom and $uname are optional)
12933:
12934: =item *
12935:
12936: cput($namespace,$storehash,$udom,$uname) : critical put
12937: ($udom and $uname are optional)
12938:
12939: =item *
12940:
12941: newput($namespace,$storehash,$udom,$uname) :
12942:
12943: Attempts to store the items in the $storehash, but only if they don't
12944: currently exist, if this succeeds you can be certain that you have
12945: successfully created a new key value pair in the $namespace db.
12946:
12947:
12948: Args:
12949: $namespace: name of database to store values to
12950: $storehash: hashref to store to the db
12951: $udom: (optional) domain of user containing the db
12952: $uname: (optional) name of user caontaining the db
12953:
12954: Returns:
12955: 'ok' -> succeeded in storing all keys of $storehash
12956: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12957: least <key> already existed in the db (other
12958: requested keys may also already exist)
12959: 'error: <msg>' -> unable to tie the DB or other error occurred
12960: 'con_lost' -> unable to contact request server
12961: 'refused' -> action was not allowed by remote machine
12962:
12963:
12964: =item *
12965:
12966: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12967: reference filled in from namesp (encrypts the return communication)
12968: ($udom and $uname are optional)
12969:
12970: =item *
12971:
12972: log($udom,$name,$home,$message) : write to permanent log for user; use
12973: critical subroutine
12974:
12975: =item *
12976:
12977: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12978: array reference filled in from namespace found in domain level on either
12979: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12980:
12981: =item *
12982:
12983: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12984: domain level either on specified domain server ($uhome) or primary domain
12985: server ($udom and $uhome are optional)
12986:
12987: =item *
12988:
12989: get_domain_defaults($target_domain) : returns hash with defaults for
12990: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12991: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12992: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12993: Values are retrieved from cache (if current), or from domain's configuration.db
12994: (if available), or lastly from values in lonTabs/dns_domain,tab,
12995: or lonTabs/domain.tab.
12996:
12997: %domdefaults = &get_auth_defaults($target_domain);
12998:
12999: =back
13000:
13001: =head2 Network Status Functions
13002:
13003: =over 4
13004:
13005: =item *
13006:
13007: dirlist() : return directory list based on URI (first arg).
13008:
13009: Inputs: 1 required, 5 optional.
13010:
13011: =over
13012:
13013: =item
13014: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13015:
13016: =item
13017: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13018:
13019: =item
13020: $username - username of user/course to be listed. Extracted from $uri if absent.
13021:
13022: =item
13023: $getpropath - boolean: 1 if prepend path using &propath().
13024:
13025: =item
13026: $getuserdir - boolean: 1 if prepend path for "userfiles".
13027:
13028: =item
13029: $alternateRoot - path to prepend in place of path from $uri.
13030:
13031: =back
13032:
13033: Returns: Array of up to two items.
13034:
13035: =over
13036:
13037: a reference to an array of files/subdirectories
13038:
13039: =over
13040:
13041: Each element in the array of files/subdirectories is a & separated list of
13042: item name and the result of running stat on the item. If dirlist was requested
13043: for a file instead of a directory, the item name will be ''. For a directory
13044: listing, if the item is a metadata file, the element will end &N&M
13045: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
13046: default copyright set (1).
13047:
13048: =back
13049:
13050: a scalar containing error condition (if encountered).
13051:
13052: =over
13053:
13054: =item
13055: no_host (no homeserver identified for $username:$domain).
13056:
13057: =item
13058: no_such_host (server contacted for listing not identified as valid host).
13059:
13060: =item
13061: con_lost (connection to remote server failed).
13062:
13063: =item
13064: refused (invalid $username:$domain received on lond side).
13065:
13066: =item
13067: no_such_dir (directory at specified path on lond side does not exist).
13068:
13069: =item
13070: empty (directory at specified path on lond side is empty).
13071:
13072: =over
13073:
13074: This is currently not encountered because the &ls3, &ls2,
13075: &ls (_handler) routines on the lond side do not filter out
13076: . and .. from a directory listing.
13077:
13078: =back
13079:
13080: =back
13081:
13082: =back
13083:
13084: =item *
13085:
13086: spareserver() : find server with least workload from spare.tab
13087:
13088:
13089: =item *
13090:
13091: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
13092: if there is no corresponding loncapa host.
13093:
13094: =back
13095:
13096:
13097: =head2 Apache Request
13098:
13099: =over 4
13100:
13101: =item *
13102:
13103: ssi($url,%hash) : server side include, does a complete request cycle on url to
13104: localhost, posts hash
13105:
13106: =back
13107:
13108: =head2 Data to String to Data
13109:
13110: =over 4
13111:
13112: =item *
13113:
13114: hash2str(%hash) : convert a hash into a string complete with escaping and '='
13115: and '&' separators, supports elements that are arrayrefs and hashrefs
13116:
13117: =item *
13118:
13119: hashref2str($hashref) : convert a hashref into a string complete with
13120: escaping and '=' and '&' separators, supports elements that are
13121: arrayrefs and hashrefs
13122:
13123: =item *
13124:
13125: arrayref2str($arrayref) : convert an arrayref into a string complete
13126: with escaping and '&' separators, supports elements that are arrayrefs
13127: and hashrefs
13128:
13129: =item *
13130:
13131: str2hash($string) : convert string to hash using unescaping and
13132: splitting on '=' and '&', supports elements that are arrayrefs and
13133: hashrefs
13134:
13135: =item *
13136:
13137: str2array($string) : convert string to hash using unescaping and
13138: splitting on '&', supports elements that are arrayrefs and hashrefs
13139:
13140: =back
13141:
13142: =head2 Logging Routines
13143:
13144:
13145: These routines allow one to make log messages in the lonnet.log and
13146: lonnet.perm logfiles.
13147:
13148: =over 4
13149:
13150: =item *
13151:
13152: logtouch() : make sure the logfile, lonnet.log, exists
13153:
13154: =item *
13155:
13156: logthis() : append message to the normal lonnet.log file, it gets
13157: preiodically rolled over and deleted.
13158:
13159: =item *
13160:
13161: logperm() : append a permanent message to lonnet.perm.log, this log
13162: file never gets deleted by any automated portion of the system, only
13163: messages of critical importance should go in here.
13164:
13165:
13166: =back
13167:
13168: =head2 General File Helper Routines
13169:
13170: =over 4
13171:
13172: =item *
13173:
13174: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
13175: (a) files in /uploaded
13176: (i) If a local copy of the file exists -
13177: compares modification date of local copy with last-modified date for
13178: definitive version stored on home server for course. If local copy is
13179: stale, requests a new version from the home server and stores it.
13180: If the original has been removed from the home server, then local copy
13181: is unlinked.
13182: (ii) If local copy does not exist -
13183: requests the file from the home server and stores it.
13184:
13185: If $caller is 'uploadrep':
13186: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
13187: for request for files originally uploaded via DOCS.
13188: - returns 'ok' if fresh local copy now available, -1 otherwise.
13189:
13190: Otherwise:
13191: This indicates a call from the content generation phase of the request.
13192: - returns the entire contents of the file or -1.
13193:
13194: (b) files in /res
13195: - returns the entire contents of a file or -1;
13196: it properly subscribes to and replicates the file if neccessary.
13197:
13198:
13199: =item *
13200:
13201: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
13202: reference
13203:
13204: returns either a stat() list of data about the file or an empty list
13205: if the file doesn't exist or couldn't find out about it (connection
13206: problems or user unknown)
13207:
13208: =item *
13209:
13210: filelocation($dir,$file) : returns file system location of a file
13211: based on URI; meant to be "fairly clean" absolute reference, $dir is a
13212: directory that relative $file lookups are to looked in ($dir of /a/dir
13213: and a file of ../bob will become /a/bob)
13214:
13215: =item *
13216:
13217: hreflocation($dir,$file) : returns file system location or a URL; same as
13218: filelocation except for hrefs
13219:
13220: =item *
13221:
13222: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
13223:
13224: =back
13225:
13226: =head2 Usererfile file routines (/uploaded*)
13227:
13228: =over 4
13229:
13230: =item *
13231:
13232: userfileupload(): main rotine for putting a file in a user or course's
13233: filespace, arguments are,
13234:
13235: formname - required - this is the name of the element in $env where the
13236: filename, and the contents of the file to create/modifed exist
13237: the filename is in $env{'form.'.$formname.'.filename'} and the
13238: contents of the file is located in $env{'form.'.$formname}
13239: context - if coursedoc, store the file in the course of the active role
13240: of the current user;
13241: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
13242: if 'canceloverwrite': delete file in tmp/overwrites directory
13243: subdir - required - subdirectory to put the file in under ../userfiles/
13244: if undefined, it will be placed in "unknown"
13245:
13246: (This routine calls clean_filename() to remove any dangerous
13247: characters from the filename, and then calls finuserfileupload() to
13248: complete the transaction)
13249:
13250: returns either the url of the uploaded file (/uploaded/....) if successful
13251: and /adm/notfound.html if unsuccessful
13252:
13253: =item *
13254:
13255: clean_filename(): routine for cleaing a filename up for storage in
13256: userfile space, argument is:
13257:
13258: filename - proposed filename
13259:
13260: returns: the new clean filename
13261:
13262: =item *
13263:
13264: finishuserfileupload(): routine that creates and sends the file to
13265: userspace, probably shouldn't be called directly
13266:
13267: docuname: username or courseid of destination for the file
13268: docudom: domain of user/course of destination for the file
13269: formname: same as for userfileupload()
13270: fname: filename (including subdirectories) for the file
13271: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
13272: allfiles: reference to hash used to store objects found by parser
13273: codebase: reference to hash used for codebases of java objects found by parser
13274: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
13275: thumbheight: height (pixels) of thumbnail to be created for uploaded image
13276: resizewidth: width to be used to resize image using resizeImage from ImageMagick
13277: resizeheight: height to be used to resize image using resizeImage from ImageMagick
13278: context: if 'overwrite', will move the uploaded file from its temporary location to
13279: userfiles to facilitate overwriting a previously uploaded file with same name.
13280: mimetype: reference to scalar to accommodate mime type determined
13281: from File::MMagic if $parser = parse.
13282:
13283: returns either the url of the uploaded file (/uploaded/....) if successful
13284: and /adm/notfound.html if unsuccessful (or an error message if context
13285: was 'overwrite').
13286:
13287:
13288: =item *
13289:
13290: renameuserfile(): renames an existing userfile to a new name
13291:
13292: Args:
13293: docuname: username or courseid of destination for the file
13294: docudom: domain of user/course of destination for the file
13295: old: current file name (including any subdirs under userfiles)
13296: new: desired file name (including any subdirs under userfiles)
13297:
13298: =item *
13299:
13300: mkdiruserfile(): creates a directory is a userfiles dir
13301:
13302: Args:
13303: docuname: username or courseid of destination for the file
13304: docudom: domain of user/course of destination for the file
13305: dir: dir to create (including any subdirs under userfiles)
13306:
13307: =item *
13308:
13309: removeuserfile(): removes a file that exists in userfiles
13310:
13311: Args:
13312: docuname: username or courseid of destination for the file
13313: docudom: domain of user/course of destination for the file
13314: fname: filname to delete (including any subdirs under userfiles)
13315:
13316: =item *
13317:
13318: removeuploadedurl(): convience function for removeuserfile()
13319:
13320: Args:
13321: url: a full /uploaded/... url to delete
13322:
13323: =item *
13324:
13325: get_portfile_permissions():
13326: Args:
13327: domain: domain of user or course contain the portfolio files
13328: user: name of user or num of course contain the portfolio files
13329: Returns:
13330: hashref of a dump of the proper file_permissions.db
13331:
13332:
13333: =item *
13334:
13335: get_access_controls():
13336:
13337: Args:
13338: current_permissions: the hash ref returned from get_portfile_permissions()
13339: group: (optional) the group you want the files associated with
13340: file: (optional) the file you want access info on
13341:
13342: Returns:
13343: a hash (keys are file names) of hashes containing
13344: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
13345: values are XML containing access control settings (see below)
13346:
13347: Internal notes:
13348:
13349: access controls are stored in file_permissions.db as key=value pairs.
13350: key -> path to file/file_name\0uniqueID:scope_end_start
13351: where scope -> public,guest,course,group,domains or users.
13352: end -> UNIX time for end of access (0 -> no end date)
13353: start -> UNIX time for start of access
13354:
13355: value -> XML description of access control
13356: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
13357: <start></start>
13358: <end></end>
13359:
13360: <password></password> for scope type = guest
13361:
13362: <domain></domain> for scope type = course or group
13363: <number></number>
13364: <roles id="">
13365: <role></role>
13366: <access></access>
13367: <section></section>
13368: <group></group>
13369: </roles>
13370:
13371: <dom></dom> for scope type = domains
13372:
13373: <users> for scope type = users
13374: <user>
13375: <uname></uname>
13376: <udom></udom>
13377: </user>
13378: </users>
13379: </scope>
13380:
13381: Access data is also aggregated for each file in an additional key=value pair:
13382: key -> path to file/file_name\0accesscontrol
13383: value -> reference to hash
13384: hash contains key = value pairs
13385: where key = uniqueID:scope_end_start
13386: value = UNIX time record was last updated
13387:
13388: Used to improve speed of look-ups of access controls for each file.
13389:
13390: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
13391:
13392: =item *
13393:
13394: modify_access_controls():
13395:
13396: Modifies access controls for a portfolio file
13397: Args
13398: 1. file name
13399: 2. reference to hash of required changes,
13400: 3. domain
13401: 4. username
13402: where domain,username are the domain of the portfolio owner
13403: (either a user or a course)
13404:
13405: Returns:
13406: 1. result of additions or updates ('ok' or 'error', with error message).
13407: 2. result of deletions ('ok' or 'error', with error message).
13408: 3. reference to hash of any new or updated access controls.
13409: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
13410: key = integer (inbound ID)
13411: value = uniqueID
13412:
13413: =item *
13414:
13415: get_timebased_id():
13416:
13417: Attempts to get a unique timestamp-based suffix for use with items added to a
13418: course via the Course Editor (e.g., folders, composite pages,
13419: group bulletin boards).
13420:
13421: Args: (first three required; six others optional)
13422:
13423: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
13424: docssequence, or name of group
13425:
13426: 2. keyid (alphanumeric): name of temporary locking key in hash,
13427: e.g., num, boardids
13428:
13429: 3. namespace: name of gdbm file used to store suffixes already assigned;
13430: file will be named nohist_namespace.db
13431:
13432: 4. cdom: domain of course; default is current course domain from %env
13433:
13434: 5. cnum: course number; default is current course number from %env
13435:
13436: 6. idtype: set to concat if an additional digit is to be appended to the
13437: unix timestamp to form the suffix, if the plain timestamp is already
13438: in use. Default is to not do this, but simply increment the unix
13439: timestamp by 1 until a unique key is obtained.
13440:
13441: 7. who: holder of locking key; defaults to user:domain for user.
13442:
13443: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
13444: retrying); default is 3.
13445:
13446: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
13447:
13448: Returns:
13449:
13450: 1. suffix obtained (numeric)
13451:
13452: 2. result of deleting locking key (ok if deleted, or lock never obtained)
13453:
13454: 3. error: contains (localized) error message if an error occurred.
13455:
13456:
13457: =back
13458:
13459: =head2 HTTP Helper Routines
13460:
13461: =over 4
13462:
13463: =item *
13464:
13465: escape() : unpack non-word characters into CGI-compatible hex codes
13466:
13467: =item *
13468:
13469: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
13470:
13471: =back
13472:
13473: =head1 PRIVATE SUBROUTINES
13474:
13475: =head2 Underlying communication routines (Shouldn't call)
13476:
13477: =over 4
13478:
13479: =item *
13480:
13481: subreply() : tries to pass a message to lonc, returns con_lost if incapable
13482:
13483: =item *
13484:
13485: reply() : uses subreply to send a message to remote machine, logs all failures
13486:
13487: =item *
13488:
13489: critical() : passes a critical message to another server; if cannot
13490: get through then place message in connection buffer directory and
13491: returns con_delayed, if incapable of saving message, returns
13492: con_failed
13493:
13494: =item *
13495:
13496: reconlonc() : tries to reconnect lonc client processes.
13497:
13498: =back
13499:
13500: =head2 Resource Access Logging
13501:
13502: =over 4
13503:
13504: =item *
13505:
13506: flushcourselogs() : flush (save) buffer logs and access logs
13507:
13508: =item *
13509:
13510: courselog($what) : save message for course in hash
13511:
13512: =item *
13513:
13514: courseacclog($what) : save message for course using &courselog(). Perform
13515: special processing for specific resource types (problems, exams, quizzes, etc).
13516:
13517: =item *
13518:
13519: goodbye() : flush course logs and log shutting down; it is called in srm.conf
13520: as a PerlChildExitHandler
13521:
13522: =back
13523:
13524: =head2 Other
13525:
13526: =over 4
13527:
13528: =item *
13529:
13530: symblist($mapname,%newhash) : update symbolic storage links
13531:
13532: =back
13533:
13534: =cut
13535:
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