1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1291 2015/08/10 15:18:21 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( sleep 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 = 20; # 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,$cachekeys) = @_;
360: my $items;
361: return unless (ref($cachekeys) eq 'ARRAY');
362: my $cachestr = join('&',@{$cachekeys});
363: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
364: return $response;
365: }
366:
367: # -------------------------------------------------- Non-critical communication
368: sub subreply {
369: my ($cmd,$server)=@_;
370: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
371: #
372: # With loncnew process trimming, there's a timing hole between lonc server
373: # process exit and the master server picking up the listen on the AF_UNIX
374: # socket. In that time interval, a lock file will exist:
375:
376: my $lockfile=$peerfile.".lock";
377: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
378: sleep(0.1);
379: }
380: # At this point, either a loncnew parent is listening or an old lonc
381: # or loncnew child is listening so we can connect or everything's dead.
382: #
383: # We'll give the connection a few tries before abandoning it. If
384: # connection is not possible, we'll con_lost back to the client.
385: #
386: my $client;
387: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
388: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
389: Type => SOCK_STREAM,
390: Timeout => 10);
391: if ($client) {
392: last; # Connected!
393: } else {
394: &create_connection(&hostname($server),$server);
395: }
396: sleep(0.1); # Try again later if failed connection.
397: }
398: my $answer;
399: if ($client) {
400: print $client "sethost:$server:$cmd\n";
401: $answer=<$client>;
402: if (!$answer) { $answer="con_lost"; }
403: chomp($answer);
404: } else {
405: $answer = 'con_lost'; # Failed connection.
406: }
407: return $answer;
408: }
409:
410: sub reply {
411: my ($cmd,$server)=@_;
412: unless (defined(&hostname($server))) { return 'no_such_host'; }
413: my $answer=subreply($cmd,$server);
414: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
415: &logthis("<font color=\"blue\">WARNING:".
416: " $cmd to $server returned $answer</font>");
417: }
418: return $answer;
419: }
420:
421: # ----------------------------------------------------------- Send USR1 to lonc
422:
423: sub reconlonc {
424: my ($lonid) = @_;
425: my $hostname = &hostname($lonid);
426: if ($lonid) {
427: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
428: if ($hostname && -e $peerfile) {
429: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
430: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
431: Type => SOCK_STREAM,
432: Timeout => 10);
433: if ($client) {
434: print $client ("reset_retries\n");
435: my $answer=<$client>;
436: #reset just this one.
437: }
438: }
439: return;
440: }
441:
442: &logthis("Trying to reconnect lonc");
443: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
444: if (open(my $fh,"<$loncfile")) {
445: my $loncpid=<$fh>;
446: chomp($loncpid);
447: if (kill 0 => $loncpid) {
448: &logthis("lonc at pid $loncpid responding, sending USR1");
449: kill USR1 => $loncpid;
450: sleep 1;
451: } else {
452: &logthis(
453: "<font color=\"blue\">WARNING:".
454: " lonc at pid $loncpid not responding, giving up</font>");
455: }
456: } else {
457: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
458: }
459: }
460:
461: # ------------------------------------------------------ Critical communication
462:
463: sub critical {
464: my ($cmd,$server)=@_;
465: unless (&hostname($server)) {
466: &logthis("<font color=\"blue\">WARNING:".
467: " Critical message to unknown server ($server)</font>");
468: return 'no_such_host';
469: }
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: &reconlonc("$perlvar{'lonSockDir'}/$server");
473: my $answer=reply($cmd,$server);
474: if ($answer eq 'con_lost') {
475: my $now=time;
476: my $middlename=$cmd;
477: $middlename=substr($middlename,0,16);
478: $middlename=~s/\W//g;
479: my $dfilename=
480: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
481: $dumpcount++;
482: {
483: my $dfh;
484: if (open($dfh,">$dfilename")) {
485: print $dfh "$cmd\n";
486: close($dfh);
487: }
488: }
489: sleep 1;
490: my $wcmd='';
491: {
492: my $dfh;
493: if (open($dfh,"<$dfilename")) {
494: $wcmd=<$dfh>;
495: close($dfh);
496: }
497: }
498: chomp($wcmd);
499: if ($wcmd eq $cmd) {
500: &logthis("<font color=\"blue\">WARNING: ".
501: "Connection buffer $dfilename: $cmd</font>");
502: &logperm("D:$server:$cmd");
503: return 'con_delayed';
504: } else {
505: &logthis("<font color=\"red\">CRITICAL:"
506: ." Critical connection failed: $server $cmd</font>");
507: &logperm("F:$server:$cmd");
508: return 'con_failed';
509: }
510: }
511: }
512: return $answer;
513: }
514:
515: # ------------------------------------------- check if return value is an error
516:
517: sub error {
518: my ($result) = @_;
519: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
520: if ($2 == 2) { return undef; }
521: return $1;
522: }
523: return undef;
524: }
525:
526: sub convert_and_load_session_env {
527: my ($lonidsdir,$handle)=@_;
528: my @profile;
529: {
530: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
531: if (!$opened) {
532: return 0;
533: }
534: flock($idf,LOCK_SH);
535: @profile=<$idf>;
536: close($idf);
537: }
538: my %temp_env;
539: foreach my $line (@profile) {
540: if ($line !~ m/=/) {
541: return 0;
542: }
543: chomp($line);
544: my ($envname,$envvalue)=split(/=/,$line,2);
545: $temp_env{&unescape($envname)} = &unescape($envvalue);
546: }
547: unlink("$lonidsdir/$handle.id");
548: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
549: 0640)) {
550: %disk_env = %temp_env;
551: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
552: untie(%disk_env);
553: }
554: return 1;
555: }
556:
557: # ------------------------------------------- Transfer profile into environment
558: my $env_loaded;
559: sub transfer_profile_to_env {
560: my ($lonidsdir,$handle,$force_transfer) = @_;
561: if (!$force_transfer && $env_loaded) { return; }
562:
563: if (!defined($lonidsdir)) {
564: $lonidsdir = $perlvar{'lonIDsDir'};
565: }
566: if (!defined($handle)) {
567: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
568: }
569:
570: my $convert;
571: {
572: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
573: if (!$opened) {
574: return;
575: }
576: flock($idf,LOCK_SH);
577: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
578: &GDBM_READER(),0640)) {
579: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
580: untie(%disk_env);
581: } else {
582: $convert = 1;
583: }
584: }
585: if ($convert) {
586: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
587: &logthis("Failed to load session, or convert session.");
588: }
589: }
590:
591: my %remove;
592: while ( my $envname = each(%env) ) {
593: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
594: if ($time < time-300) {
595: $remove{$key}++;
596: }
597: }
598: }
599:
600: $env{'user.environment'} = "$lonidsdir/$handle.id";
601: $env_loaded=1;
602: foreach my $expired_key (keys(%remove)) {
603: &delenv($expired_key);
604: }
605: }
606:
607: # ---------------------------------------------------- Check for valid session
608: sub check_for_valid_session {
609: my ($r,$name,$userhashref) = @_;
610: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
611: if ($name eq '') {
612: $name = 'lonID';
613: }
614: my $lonid=$cookies{$name};
615: return undef if (!$lonid);
616:
617: my $handle=&LONCAPA::clean_handle($lonid->value);
618: my $lonidsdir;
619: if ($name eq 'lonDAV') {
620: $lonidsdir=$r->dir_config('lonDAVsessDir');
621: } else {
622: $lonidsdir=$r->dir_config('lonIDsDir');
623: }
624: return undef if (!-e "$lonidsdir/$handle.id");
625:
626: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
627: return undef if (!$opened);
628:
629: flock($idf,LOCK_SH);
630: my %disk_env;
631: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
632: &GDBM_READER(),0640)) {
633: return undef;
634: }
635:
636: if (!defined($disk_env{'user.name'})
637: || !defined($disk_env{'user.domain'})) {
638: return undef;
639: }
640:
641: if (ref($userhashref) eq 'HASH') {
642: $userhashref->{'name'} = $disk_env{'user.name'};
643: $userhashref->{'domain'} = $disk_env{'user.domain'};
644: }
645:
646: return $handle;
647: }
648:
649: sub timed_flock {
650: my ($file,$lock_type) = @_;
651: my $failed=0;
652: eval {
653: local $SIG{__DIE__}='DEFAULT';
654: local $SIG{ALRM}=sub {
655: $failed=1;
656: die("failed lock");
657: };
658: alarm(13);
659: flock($file,$lock_type);
660: alarm(0);
661: };
662: if ($failed) {
663: return undef;
664: } else {
665: return 1;
666: }
667: }
668:
669: # ---------------------------------------------------------- Append Environment
670:
671: sub appenv {
672: my ($newenv,$roles) = @_;
673: if (ref($newenv) eq 'HASH') {
674: foreach my $key (keys(%{$newenv})) {
675: my $refused = 0;
676: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
677: $refused = 1;
678: if (ref($roles) eq 'ARRAY') {
679: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
680: if (grep(/^\Q$role\E$/,@{$roles})) {
681: $refused = 0;
682: }
683: }
684: }
685: if ($refused) {
686: &logthis("<font color=\"blue\">WARNING: ".
687: "Attempt to modify environment ".$key." to ".$newenv->{$key}
688: .'</font>');
689: delete($newenv->{$key});
690: } else {
691: $env{$key}=$newenv->{$key};
692: }
693: }
694: my $opened = open(my $env_file,'+<',$env{'user.environment'});
695: if ($opened
696: && &timed_flock($env_file,LOCK_EX)
697: &&
698: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
699: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
700: while (my ($key,$value) = each(%{$newenv})) {
701: $disk_env{$key} = $value;
702: }
703: untie(%disk_env);
704: }
705: }
706: return 'ok';
707: }
708: # ----------------------------------------------------- Delete from Environment
709:
710: sub delenv {
711: my ($delthis,$regexp,$roles) = @_;
712: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
713: my $refused = 1;
714: if (ref($roles) eq 'ARRAY') {
715: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
716: if (grep(/^\Q$role\E$/,@{$roles})) {
717: $refused = 0;
718: }
719: }
720: if ($refused) {
721: &logthis("<font color=\"blue\">WARNING: ".
722: "Attempt to delete from environment ".$delthis);
723: return 'error';
724: }
725: }
726: my $opened = open(my $env_file,'+<',$env{'user.environment'});
727: if ($opened
728: && &timed_flock($env_file,LOCK_EX)
729: &&
730: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
731: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
732: foreach my $key (keys(%disk_env)) {
733: if ($regexp) {
734: if ($key=~/^$delthis/) {
735: delete($env{$key});
736: delete($disk_env{$key});
737: }
738: } else {
739: if ($key=~/^\Q$delthis\E/) {
740: delete($env{$key});
741: delete($disk_env{$key});
742: }
743: }
744: }
745: untie(%disk_env);
746: }
747: return 'ok';
748: }
749:
750: sub get_env_multiple {
751: my ($name) = @_;
752: my @values;
753: if (defined($env{$name})) {
754: # exists is it an array
755: if (ref($env{$name})) {
756: @values=@{ $env{$name} };
757: } else {
758: $values[0]=$env{$name};
759: }
760: }
761: return(@values);
762: }
763:
764: # ------------------------------------------------------------------- Locking
765:
766: sub set_lock {
767: my ($text)=@_;
768: $locknum++;
769: my $id=$$.'-'.$locknum;
770: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
771: 'session.lock.'.$id => $text});
772: return $id;
773: }
774:
775: sub get_locks {
776: my $num=0;
777: my %texts=();
778: foreach my $lock (split(/\,/,$env{'session.locks'})) {
779: if ($lock=~/\w/) {
780: $num++;
781: $texts{$lock}=$env{'session.lock.'.$lock};
782: }
783: }
784: return ($num,%texts);
785: }
786:
787: sub remove_lock {
788: my ($id)=@_;
789: my $newlocks='';
790: foreach my $lock (split(/\,/,$env{'session.locks'})) {
791: if (($lock=~/\w/) && ($lock ne $id)) {
792: $newlocks.=','.$lock;
793: }
794: }
795: &appenv({'session.locks' => $newlocks});
796: &delenv('session.lock.'.$id);
797: }
798:
799: sub remove_all_locks {
800: my $activelocks=$env{'session.locks'};
801: foreach my $lock (split(/\,/,$env{'session.locks'})) {
802: if ($lock=~/\w/) {
803: &remove_lock($lock);
804: }
805: }
806: }
807:
808:
809: # ------------------------------------------ Find out current server userload
810: sub userload {
811: my $numusers=0;
812: {
813: opendir(LONIDS,$perlvar{'lonIDsDir'});
814: my $filename;
815: my $curtime=time;
816: while ($filename=readdir(LONIDS)) {
817: next if ($filename eq '.' || $filename eq '..');
818: next if ($filename =~ /publicuser_\d+\.id/);
819: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
820: if ($curtime-$mtime < 1800) { $numusers++; }
821: }
822: closedir(LONIDS);
823: }
824: my $userloadpercent=0;
825: my $maxuserload=$perlvar{'lonUserLoadLim'};
826: if ($maxuserload) {
827: $userloadpercent=100*$numusers/$maxuserload;
828: }
829: $userloadpercent=sprintf("%.2f",$userloadpercent);
830: return $userloadpercent;
831: }
832:
833: # ------------------------------ Find server with least workload from spare.tab
834:
835: sub spareserver {
836: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
837: my $spare_server;
838: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
839: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
840: : $userloadpercent;
841: my ($uint_dom,$remotesessions);
842: if (($udom ne '') && (&domain($udom) ne '')) {
843: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
844: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
845: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
846: $remotesessions = $udomdefaults{'remotesessions'};
847: }
848: my $spareshash = &this_host_spares($udom);
849: if (ref($spareshash) eq 'HASH') {
850: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
851: foreach my $try_server (@{ $spareshash->{'primary'} }) {
852: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
853: $try_server));
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858:
859: my $found_server = ($spare_server ne '' && $lowest_load < 100);
860:
861: if (!$found_server) {
862: if (ref($spareshash->{'default'}) eq 'ARRAY') {
863: foreach my $try_server (@{ $spareshash->{'default'} }) {
864: next unless (&spare_can_host($udom,$uint_dom,
865: $remotesessions,$try_server));
866: ($spare_server, $lowest_load) =
867: &compare_server_load($try_server, $spare_server, $lowest_load);
868: }
869: }
870: }
871: }
872:
873: if (!$want_server_name) {
874: my $protocol = 'http';
875: if ($protocol{$spare_server} eq 'https') {
876: $protocol = $protocol{$spare_server};
877: }
878: if (defined($spare_server)) {
879: my $hostname = &hostname($spare_server);
880: if (defined($hostname)) {
881: $spare_server = $protocol.'://'.$hostname;
882: }
883: }
884: }
885: return $spare_server;
886: }
887:
888: sub compare_server_load {
889: my ($try_server, $spare_server, $lowest_load, $required) = @_;
890:
891: if ($required) {
892: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
893: my $remoterev = &get_server_loncaparev(undef,$try_server);
894: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
895: if (($major eq '' && $minor eq '') ||
896: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
897: return ($spare_server,$lowest_load);
898: }
899: }
900:
901: my $loadans = &reply('load', $try_server);
902: my $userloadans = &reply('userload',$try_server);
903:
904: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
905: return ($spare_server, $lowest_load); #didn't get a number from the server
906: }
907:
908: my $load;
909: if ($loadans =~ /\d/) {
910: if ($userloadans =~ /\d/) {
911: #both are numbers, pick the bigger one
912: $load = ($loadans > $userloadans) ? $loadans
913: : $userloadans;
914: } else {
915: $load = $loadans;
916: }
917: } else {
918: $load = $userloadans;
919: }
920:
921: if (($load =~ /\d/) && ($load < $lowest_load)) {
922: $spare_server = $try_server;
923: $lowest_load = $load;
924: }
925: return ($spare_server,$lowest_load);
926: }
927:
928: # --------------------------- ask offload servers if user already has a session
929: sub find_existing_session {
930: my ($udom,$uname) = @_;
931: my $spareshash = &this_host_spares($udom);
932: if (ref($spareshash) eq 'HASH') {
933: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
934: foreach my $try_server (@{ $spareshash->{'primary'} }) {
935: return $try_server if (&has_user_session($try_server, $udom, $uname));
936: }
937: }
938: if (ref($spareshash->{'default'}) eq 'ARRAY') {
939: foreach my $try_server (@{ $spareshash->{'default'} }) {
940: return $try_server if (&has_user_session($try_server, $udom, $uname));
941: }
942: }
943: }
944: return;
945: }
946:
947: # -------------------------------- ask if server already has a session for user
948: sub has_user_session {
949: my ($lonid,$udom,$uname) = @_;
950: my $result = &reply(join(':','userhassession',
951: map {&escape($_)} ($udom,$uname)),$lonid);
952: return 1 if ($result eq 'ok');
953:
954: return 0;
955: }
956:
957: # --------- determine least loaded server in a user's domain which allows login
958:
959: sub choose_server {
960: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
961: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
962: my %servers = &get_servers($udom);
963: my $lowest_load = 30000;
964: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
965: if ($skiploadbal) {
966: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
967: unless (defined($cached)) {
968: my $cachetime = 60*60*24;
969: my %domconfig =
970: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
971: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
972: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
973: $cachetime);
974: }
975: }
976: }
977: foreach my $lonhost (keys(%servers)) {
978: if ($skiploadbal) {
979: if (ref($balancers) eq 'HASH') {
980: next if (exists($balancers->{$lonhost}));
981: }
982: }
983: my $loginvia;
984: if ($checkloginvia) {
985: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
986: if ($loginvia) {
987: my ($server,$path) = split(/:/,$loginvia);
988: ($login_host, $lowest_load) =
989: &compare_server_load($server, $login_host, $lowest_load, $required);
990: if ($login_host eq $server) {
991: $portal_path = $path;
992: $isredirect = 1;
993: }
994: } else {
995: ($login_host, $lowest_load) =
996: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
997: if ($login_host eq $lonhost) {
998: $portal_path = '';
999: $isredirect = '';
1000: }
1001: }
1002: } else {
1003: ($login_host, $lowest_load) =
1004: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1005: }
1006: }
1007: if ($login_host ne '') {
1008: $hostname = &hostname($login_host);
1009: }
1010: return ($login_host,$hostname,$portal_path,$isredirect);
1011: }
1012:
1013: # --------------------------------------------- Try to change a user's password
1014:
1015: sub changepass {
1016: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1017: $currentpass = &escape($currentpass);
1018: $newpass = &escape($newpass);
1019: my $lonhost = $perlvar{'lonHostID'};
1020: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1021: $server);
1022: if (! $answer) {
1023: &logthis("No reply on password change request to $server ".
1024: "by $uname in domain $udom.");
1025: } elsif ($answer =~ "^ok") {
1026: &logthis("$uname in $udom successfully changed their password ".
1027: "on $server.");
1028: } elsif ($answer =~ "^pwchange_failure") {
1029: &logthis("$uname in $udom was unable to change their password ".
1030: "on $server. The action was blocked by either lcpasswd ".
1031: "or pwchange");
1032: } elsif ($answer =~ "^non_authorized") {
1033: &logthis("$uname in $udom did not get their password correct when ".
1034: "attempting to change it on $server.");
1035: } elsif ($answer =~ "^auth_mode_error") {
1036: &logthis("$uname in $udom attempted to change their password despite ".
1037: "not being locally or internally authenticated on $server.");
1038: } elsif ($answer =~ "^unknown_user") {
1039: &logthis("$uname in $udom attempted to change their password ".
1040: "on $server but were unable to because $server is not ".
1041: "their home server.");
1042: } elsif ($answer =~ "^refused") {
1043: &logthis("$server refused to change $uname in $udom password because ".
1044: "it was sent an unencrypted request to change the password.");
1045: } elsif ($answer =~ "invalid_client") {
1046: &logthis("$server refused to change $uname in $udom password because ".
1047: "it was a reset by e-mail originating from an invalid server.");
1048: }
1049: return $answer;
1050: }
1051:
1052: # ----------------------- Try to determine user's current authentication scheme
1053:
1054: sub queryauthenticate {
1055: my ($uname,$udom)=@_;
1056: my $uhome=&homeserver($uname,$udom);
1057: if (!$uhome) {
1058: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1059: return 'no_host';
1060: }
1061: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1062: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1063: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1064: }
1065: return $answer;
1066: }
1067:
1068: # --------- Try to authenticate user from domain's lib servers (first this one)
1069:
1070: sub authenticate {
1071: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1072: $upass=&escape($upass);
1073: $uname= &LONCAPA::clean_username($uname);
1074: my $uhome=&homeserver($uname,$udom,1);
1075: my $newhome;
1076: if ((!$uhome) || ($uhome eq 'no_host')) {
1077: # Maybe the machine was offline and only re-appeared again recently?
1078: &reconlonc();
1079: # One more
1080: $uhome=&homeserver($uname,$udom,1);
1081: if (($uhome eq 'no_host') && $checkdefauth) {
1082: if (defined(&domain($udom,'primary'))) {
1083: $newhome=&domain($udom,'primary');
1084: }
1085: if ($newhome ne '') {
1086: $uhome = $newhome;
1087: }
1088: }
1089: if ((!$uhome) || ($uhome eq 'no_host')) {
1090: &logthis("User $uname at $udom is unknown in authenticate");
1091: return 'no_host';
1092: }
1093: }
1094: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1095: if ($answer eq 'authorized') {
1096: if ($newhome) {
1097: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1098: return 'no_account_on_host';
1099: } else {
1100: &logthis("User $uname at $udom authorized by $uhome");
1101: return $uhome;
1102: }
1103: }
1104: if ($answer eq 'non_authorized') {
1105: &logthis("User $uname at $udom rejected by $uhome");
1106: return 'no_host';
1107: }
1108: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1109: return 'no_host';
1110: }
1111:
1112: sub can_host_session {
1113: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1114: my $canhost = 1;
1115: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1116: if (ref($remotesessions) eq 'HASH') {
1117: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1118: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1119: $canhost = 0;
1120: } else {
1121: $canhost = 1;
1122: }
1123: }
1124: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1125: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1126: $canhost = 1;
1127: } else {
1128: $canhost = 0;
1129: }
1130: }
1131: if ($canhost) {
1132: if ($remotesessions->{'version'} ne '') {
1133: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1134: if ($reqmajor ne '' && $reqminor ne '') {
1135: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1136: my $major = $1;
1137: my $minor = $2;
1138: if (($major < $reqmajor ) ||
1139: (($major == $reqmajor) && ($minor < $reqminor))) {
1140: $canhost = 0;
1141: }
1142: } else {
1143: $canhost = 0;
1144: }
1145: }
1146: }
1147: }
1148: }
1149: if ($canhost) {
1150: if (ref($hostedsessions) eq 'HASH') {
1151: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1152: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1153: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1154: if (($uint_dom ne '') &&
1155: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1156: $canhost = 0;
1157: } else {
1158: $canhost = 1;
1159: }
1160: }
1161: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1162: if (($uint_dom ne '') &&
1163: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1164: $canhost = 1;
1165: } else {
1166: $canhost = 0;
1167: }
1168: }
1169: }
1170: }
1171: return $canhost;
1172: }
1173:
1174: sub spare_can_host {
1175: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1176: my $canhost=1;
1177: my $try_server_hostname = &hostname($try_server);
1178: my $serverhomeID = &get_server_homeID($try_server_hostname);
1179: my $serverhomedom = &host_domain($serverhomeID);
1180: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1181: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1182: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1183: $canhost = 0;
1184: }
1185: }
1186: if (($canhost) && ($uint_dom)) {
1187: my @intdoms;
1188: my $internet_names = &get_internet_names($try_server);
1189: if (ref($internet_names) eq 'ARRAY') {
1190: @intdoms = @{$internet_names};
1191: }
1192: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1193: my $remoterev = &get_server_loncaparev(undef,$try_server);
1194: $canhost = &can_host_session($udom,$try_server,$remoterev,
1195: $remotesessions,
1196: $defdomdefaults{'hostedsessions'});
1197: }
1198: }
1199: return $canhost;
1200: }
1201:
1202: sub this_host_spares {
1203: my ($dom) = @_;
1204: my ($dom_in_use,$lonhost_in_use,$result);
1205: my @hosts = ¤t_machine_ids();
1206: foreach my $lonhost (@hosts) {
1207: if (&host_domain($lonhost) eq $dom) {
1208: $dom_in_use = $dom;
1209: $lonhost_in_use = $lonhost;
1210: last;
1211: }
1212: }
1213: if ($dom_in_use ne '') {
1214: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1215: }
1216: if (ref($result) ne 'HASH') {
1217: $lonhost_in_use = $perlvar{'lonHostID'};
1218: $dom_in_use = &host_domain($lonhost_in_use);
1219: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1220: if (ref($result) ne 'HASH') {
1221: $result = \%spareid;
1222: }
1223: }
1224: return $result;
1225: }
1226:
1227: sub spares_for_offload {
1228: my ($dom_in_use,$lonhost_in_use) = @_;
1229: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1230: if (defined($cached)) {
1231: return $result;
1232: } else {
1233: my $cachetime = 60*60*24;
1234: my %domconfig =
1235: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1236: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1237: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1238: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1239: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1240: }
1241: }
1242: }
1243: }
1244: return;
1245: }
1246:
1247: sub get_lonbalancer_config {
1248: my ($servers) = @_;
1249: my ($currbalancer,$currtargets);
1250: if (ref($servers) eq 'HASH') {
1251: foreach my $server (keys(%{$servers})) {
1252: my %what = (
1253: spareid => 1,
1254: perlvar => 1,
1255: );
1256: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1257: if ($result eq 'ok') {
1258: if (ref($returnhash) eq 'HASH') {
1259: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1260: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1261: $currbalancer = $server;
1262: $currtargets = {};
1263: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1264: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1265: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1266: }
1267: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1268: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1269: }
1270: }
1271: last;
1272: }
1273: }
1274: }
1275: }
1276: }
1277: }
1278: return ($currbalancer,$currtargets);
1279: }
1280:
1281: sub check_loadbalancing {
1282: my ($uname,$udom) = @_;
1283: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1284: $rule_in_effect,$offloadto,$otherserver);
1285: my $lonhost = $perlvar{'lonHostID'};
1286: my @hosts = ¤t_machine_ids();
1287: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1288: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1289: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1290: my $serverhomedom = &host_domain($lonhost);
1291:
1292: my $cachetime = 60*60*24;
1293:
1294: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1295: $dom_in_use = $udom;
1296: $homeintdom = 1;
1297: } else {
1298: $dom_in_use = $serverhomedom;
1299: }
1300: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1301: unless (defined($cached)) {
1302: my %domconfig =
1303: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1304: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1305: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1306: }
1307: }
1308: if (ref($result) eq 'HASH') {
1309: ($is_balancer,$currtargets,$currrules) =
1310: &check_balancer_result($result,@hosts);
1311: if ($is_balancer) {
1312: if (ref($currrules) eq 'HASH') {
1313: if ($homeintdom) {
1314: if ($uname ne '') {
1315: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1316: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1317: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1318: $rule_in_effect = $currrules->{'_LC_author'};
1319: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1320: $rule_in_effect = $currrules->{'_LC_adv'}
1321: }
1322: }
1323: if ($rule_in_effect eq '') {
1324: my %userenv = &userenvironment($udom,$uname,'inststatus');
1325: if ($userenv{'inststatus'} ne '') {
1326: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1327: my ($othertitle,$usertypes,$types) =
1328: &Apache::loncommon::sorted_inst_types($udom);
1329: if (ref($types) eq 'ARRAY') {
1330: foreach my $type (@{$types}) {
1331: if (grep(/^\Q$type\E$/,@statuses)) {
1332: if (exists($currrules->{$type})) {
1333: $rule_in_effect = $currrules->{$type};
1334: }
1335: }
1336: }
1337: }
1338: } else {
1339: if (exists($currrules->{'default'})) {
1340: $rule_in_effect = $currrules->{'default'};
1341: }
1342: }
1343: }
1344: } else {
1345: if (exists($currrules->{'default'})) {
1346: $rule_in_effect = $currrules->{'default'};
1347: }
1348: }
1349: } else {
1350: if ($currrules->{'_LC_external'} ne '') {
1351: $rule_in_effect = $currrules->{'_LC_external'};
1352: }
1353: }
1354: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1355: $uname,$udom);
1356: }
1357: }
1358: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1359: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1360: unless (defined($cached)) {
1361: my %domconfig =
1362: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1363: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1364: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1365: }
1366: }
1367: if (ref($result) eq 'HASH') {
1368: ($is_balancer,$currtargets,$currrules) =
1369: &check_balancer_result($result,@hosts);
1370: if ($is_balancer) {
1371: if (ref($currrules) eq 'HASH') {
1372: if ($currrules->{'_LC_internetdom'} ne '') {
1373: $rule_in_effect = $currrules->{'_LC_internetdom'};
1374: }
1375: }
1376: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1377: $uname,$udom);
1378: }
1379: } else {
1380: if ($perlvar{'lonBalancer'} eq 'yes') {
1381: $is_balancer = 1;
1382: $offloadto = &this_host_spares($dom_in_use);
1383: }
1384: }
1385: } else {
1386: if ($perlvar{'lonBalancer'} eq 'yes') {
1387: $is_balancer = 1;
1388: $offloadto = &this_host_spares($dom_in_use);
1389: }
1390: }
1391: if ($is_balancer) {
1392: my $lowest_load = 30000;
1393: if (ref($offloadto) eq 'HASH') {
1394: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1395: foreach my $try_server (@{$offloadto->{'primary'}}) {
1396: ($otherserver,$lowest_load) =
1397: &compare_server_load($try_server,$otherserver,$lowest_load);
1398: }
1399: }
1400: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1401:
1402: if (!$found_server) {
1403: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1404: foreach my $try_server (@{$offloadto->{'default'}}) {
1405: ($otherserver,$lowest_load) =
1406: &compare_server_load($try_server,$otherserver,$lowest_load);
1407: }
1408: }
1409: }
1410: } elsif (ref($offloadto) eq 'ARRAY') {
1411: if (@{$offloadto} == 1) {
1412: $otherserver = $offloadto->[0];
1413: } elsif (@{$offloadto} > 1) {
1414: foreach my $try_server (@{$offloadto}) {
1415: ($otherserver,$lowest_load) =
1416: &compare_server_load($try_server,$otherserver,$lowest_load);
1417: }
1418: }
1419: }
1420: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1421: $is_balancer = 0;
1422: if ($uname ne '' && $udom ne '') {
1423: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1424:
1425: &appenv({'user.loadbalexempt' => $lonhost,
1426: 'user.loadbalcheck.time' => time});
1427: }
1428: }
1429: }
1430: }
1431: return ($is_balancer,$otherserver);
1432: }
1433:
1434: sub check_balancer_result {
1435: my ($result,@hosts) = @_;
1436: my ($is_balancer,$currtargets,$currrules);
1437: if (ref($result) eq 'HASH') {
1438: if ($result->{'lonhost'} ne '') {
1439: my $currbalancer = $result->{'lonhost'};
1440: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1441: $is_balancer = 1;
1442: $currtargets = $result->{'targets'};
1443: $currrules = $result->{'rules'};
1444: }
1445: } else {
1446: foreach my $key (keys(%{$result})) {
1447: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1448: (ref($result->{$key}) eq 'HASH')) {
1449: $is_balancer = 1;
1450: $currrules = $result->{$key}{'rules'};
1451: $currtargets = $result->{$key}{'targets'};
1452: last;
1453: }
1454: }
1455: }
1456: }
1457: return ($is_balancer,$currtargets,$currrules);
1458: }
1459:
1460: sub get_loadbalancer_targets {
1461: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1462: my $offloadto;
1463: if ($rule_in_effect eq 'none') {
1464: return [$perlvar{'lonHostID'}];
1465: } elsif ($rule_in_effect eq '') {
1466: $offloadto = $currtargets;
1467: } else {
1468: if ($rule_in_effect eq 'homeserver') {
1469: my $homeserver = &homeserver($uname,$udom);
1470: if ($homeserver ne 'no_host') {
1471: $offloadto = [$homeserver];
1472: }
1473: } elsif ($rule_in_effect eq 'externalbalancer') {
1474: my %domconfig =
1475: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1476: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1477: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1478: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1479: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1480: }
1481: }
1482: } else {
1483: my %servers = &internet_dom_servers($udom);
1484: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1485: if (&hostname($remotebalancer) ne '') {
1486: $offloadto = [$remotebalancer];
1487: }
1488: }
1489: } elsif (&hostname($rule_in_effect) ne '') {
1490: $offloadto = [$rule_in_effect];
1491: }
1492: }
1493: return $offloadto;
1494: }
1495:
1496: sub internet_dom_servers {
1497: my ($dom) = @_;
1498: my (%uniqservers,%servers);
1499: my $primaryserver = &hostname(&domain($dom,'primary'));
1500: my @machinedoms = &machine_domains($primaryserver);
1501: foreach my $mdom (@machinedoms) {
1502: my %currservers = %servers;
1503: my %server = &get_servers($mdom);
1504: %servers = (%currservers,%server);
1505: }
1506: my %by_hostname;
1507: foreach my $id (keys(%servers)) {
1508: push(@{$by_hostname{$servers{$id}}},$id);
1509: }
1510: foreach my $hostname (sort(keys(%by_hostname))) {
1511: if (@{$by_hostname{$hostname}} > 1) {
1512: my $match = 0;
1513: foreach my $id (@{$by_hostname{$hostname}}) {
1514: if (&host_domain($id) eq $dom) {
1515: $uniqservers{$id} = $hostname;
1516: $match = 1;
1517: }
1518: }
1519: unless ($match) {
1520: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1521: }
1522: } else {
1523: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1524: }
1525: }
1526: return %uniqservers;
1527: }
1528:
1529: # ---------------------- Find the homebase for a user from domain's lib servers
1530:
1531: my %homecache;
1532: sub homeserver {
1533: my ($uname,$udom,$ignoreBadCache)=@_;
1534: my $index="$uname:$udom";
1535:
1536: if (exists($homecache{$index})) { return $homecache{$index}; }
1537:
1538: my %servers = &get_servers($udom,'library');
1539: foreach my $tryserver (keys(%servers)) {
1540: next if ($ignoreBadCache ne 'true' &&
1541: exists($badServerCache{$tryserver}));
1542:
1543: my $answer=reply("home:$udom:$uname",$tryserver);
1544: if ($answer eq 'found') {
1545: delete($badServerCache{$tryserver});
1546: return $homecache{$index}=$tryserver;
1547: } elsif ($answer eq 'no_host') {
1548: $badServerCache{$tryserver}=1;
1549: }
1550: }
1551: return 'no_host';
1552: }
1553:
1554: # ------------------------------------- Find the usernames behind a list of IDs
1555:
1556: sub idget {
1557: my ($udom,@ids)=@_;
1558: my %returnhash=();
1559:
1560: my %servers = &get_servers($udom,'library');
1561: foreach my $tryserver (keys(%servers)) {
1562: my $idlist=join('&',@ids);
1563: $idlist=~tr/A-Z/a-z/;
1564: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1565: my @answer=();
1566: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1567: @answer=split(/\&/,$reply);
1568: } ;
1569: my $i;
1570: for ($i=0;$i<=$#ids;$i++) {
1571: if ($answer[$i]) {
1572: $returnhash{$ids[$i]}=$answer[$i];
1573: }
1574: }
1575: }
1576: return %returnhash;
1577: }
1578:
1579: # ------------------------------------- Find the IDs behind a list of usernames
1580:
1581: sub idrget {
1582: my ($udom,@unames)=@_;
1583: my %returnhash=();
1584: foreach my $uname (@unames) {
1585: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1586: }
1587: return %returnhash;
1588: }
1589:
1590: # ------------------------------- Store away a list of names and associated IDs
1591:
1592: sub idput {
1593: my ($udom,%ids)=@_;
1594: my %servers=();
1595: foreach my $uname (keys(%ids)) {
1596: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1597: my $uhom=&homeserver($uname,$udom);
1598: if ($uhom ne 'no_host') {
1599: my $id=&escape($ids{$uname});
1600: $id=~tr/A-Z/a-z/;
1601: my $esc_unam=&escape($uname);
1602: if ($servers{$uhom}) {
1603: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1604: } else {
1605: $servers{$uhom}=$id.'='.$esc_unam;
1606: }
1607: }
1608: }
1609: foreach my $server (keys(%servers)) {
1610: &critical('idput:'.$udom.':'.$servers{$server},$server);
1611: }
1612: }
1613:
1614: # ---------------------------------------- Delete unwanted IDs from ids.db file
1615:
1616: sub iddel {
1617: my ($udom,$idshashref,$uhome)=@_;
1618: my %result=();
1619: unless (ref($idshashref) eq 'HASH') {
1620: return %result;
1621: }
1622: my %servers=();
1623: while (my ($id,$uname) = each(%{$idshashref})) {
1624: my $uhom;
1625: if ($uhome) {
1626: $uhom = $uhome;
1627: } else {
1628: $uhom=&homeserver($uname,$udom);
1629: }
1630: if ($uhom ne 'no_host') {
1631: if ($servers{$uhom}) {
1632: $servers{$uhom}.='&'.&escape($id);
1633: } else {
1634: $servers{$uhom}=&escape($id);
1635: }
1636: }
1637: }
1638: foreach my $server (keys(%servers)) {
1639: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1640: }
1641: return %result;
1642: }
1643:
1644: # ------------------------------dump from db file owned by domainconfig user
1645: sub dump_dom {
1646: my ($namespace, $udom, $regexp) = @_;
1647:
1648: $udom ||= $env{'user.domain'};
1649:
1650: return () unless $udom;
1651:
1652: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1653: }
1654:
1655: # ------------------------------------------ get items from domain db files
1656:
1657: sub get_dom {
1658: my ($namespace,$storearr,$udom,$uhome)=@_;
1659: return if ($udom eq 'public');
1660: my $items='';
1661: foreach my $item (@$storearr) {
1662: $items.=&escape($item).'&';
1663: }
1664: $items=~s/\&$//;
1665: if (!$udom) {
1666: $udom=$env{'user.domain'};
1667: return if ($udom eq 'public');
1668: if (defined(&domain($udom,'primary'))) {
1669: $uhome=&domain($udom,'primary');
1670: } else {
1671: undef($uhome);
1672: }
1673: } else {
1674: if (!$uhome) {
1675: if (defined(&domain($udom,'primary'))) {
1676: $uhome=&domain($udom,'primary');
1677: }
1678: }
1679: }
1680: if ($udom && $uhome && ($uhome ne 'no_host')) {
1681: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1682: my %returnhash;
1683: if ($rep eq '' || $rep =~ /^error: 2 /) {
1684: return %returnhash;
1685: }
1686: my @pairs=split(/\&/,$rep);
1687: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1688: return @pairs;
1689: }
1690: my $i=0;
1691: foreach my $item (@$storearr) {
1692: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1693: $i++;
1694: }
1695: return %returnhash;
1696: } else {
1697: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1698: }
1699: }
1700:
1701: # -------------------------------------------- put items in domain db files
1702:
1703: sub put_dom {
1704: my ($namespace,$storehash,$udom,$uhome)=@_;
1705: if (!$udom) {
1706: $udom=$env{'user.domain'};
1707: if (defined(&domain($udom,'primary'))) {
1708: $uhome=&domain($udom,'primary');
1709: } else {
1710: undef($uhome);
1711: }
1712: } else {
1713: if (!$uhome) {
1714: if (defined(&domain($udom,'primary'))) {
1715: $uhome=&domain($udom,'primary');
1716: }
1717: }
1718: }
1719: if ($udom && $uhome && ($uhome ne 'no_host')) {
1720: my $items='';
1721: foreach my $item (keys(%$storehash)) {
1722: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1723: }
1724: $items=~s/\&$//;
1725: return &reply("putdom:$udom:$namespace:$items",$uhome);
1726: } else {
1727: &logthis("put_dom failed - no homeserver and/or domain");
1728: }
1729: }
1730:
1731: # --------------------- newput for items in db file owned by domainconfig user
1732: sub newput_dom {
1733: my ($namespace,$storehash,$udom) = @_;
1734: my $result;
1735: if (!$udom) {
1736: $udom=$env{'user.domain'};
1737: }
1738: if ($udom) {
1739: my $uname = &get_domainconfiguser($udom);
1740: $result = &newput($namespace,$storehash,$udom,$uname);
1741: }
1742: return $result;
1743: }
1744:
1745: # --------------------- delete for items in db file owned by domainconfig user
1746: sub del_dom {
1747: my ($namespace,$storearr,$udom)=@_;
1748: if (ref($storearr) eq 'ARRAY') {
1749: if (!$udom) {
1750: $udom=$env{'user.domain'};
1751: }
1752: if ($udom) {
1753: my $uname = &get_domainconfiguser($udom);
1754: return &del($namespace,$storearr,$udom,$uname);
1755: }
1756: }
1757: }
1758:
1759: # ----------------------------------construct domainconfig user for a domain
1760: sub get_domainconfiguser {
1761: my ($udom) = @_;
1762: return $udom.'-domainconfig';
1763: }
1764:
1765: sub retrieve_inst_usertypes {
1766: my ($udom) = @_;
1767: my (%returnhash,@order);
1768: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1769: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1770: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1771: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1772: } else {
1773: if (defined(&domain($udom,'primary'))) {
1774: my $uhome=&domain($udom,'primary');
1775: my $rep=&reply("inst_usertypes:$udom",$uhome);
1776: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1777: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1778: return (\%returnhash,\@order);
1779: }
1780: my ($hashitems,$orderitems) = split(/:/,$rep);
1781: my @pairs=split(/\&/,$hashitems);
1782: foreach my $item (@pairs) {
1783: my ($key,$value)=split(/=/,$item,2);
1784: $key = &unescape($key);
1785: next if ($key =~ /^error: 2 /);
1786: $returnhash{$key}=&thaw_unescape($value);
1787: }
1788: my @esc_order = split(/\&/,$orderitems);
1789: foreach my $item (@esc_order) {
1790: push(@order,&unescape($item));
1791: }
1792: } else {
1793: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1794: }
1795: return (\%returnhash,\@order);
1796: }
1797: }
1798:
1799: sub is_domainimage {
1800: my ($url) = @_;
1801: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1802: if (&domain($1) ne '') {
1803: return '1';
1804: }
1805: }
1806: return;
1807: }
1808:
1809: sub inst_directory_query {
1810: my ($srch) = @_;
1811: my $udom = $srch->{'srchdomain'};
1812: my %results;
1813: my $homeserver = &domain($udom,'primary');
1814: my $outcome;
1815: if ($homeserver ne '') {
1816: my $queryid=&reply("querysend:instdirsearch:".
1817: &escape($srch->{'srchby'}).':'.
1818: &escape($srch->{'srchterm'}).':'.
1819: &escape($srch->{'srchtype'}),$homeserver);
1820: my $host=&hostname($homeserver);
1821: if ($queryid !~/^\Q$host\E\_/) {
1822: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1823: return;
1824: }
1825: my $response = &get_query_reply($queryid);
1826: my $maxtries = 5;
1827: my $tries = 1;
1828: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1829: $response = &get_query_reply($queryid);
1830: $tries ++;
1831: }
1832:
1833: if (!&error($response) && $response ne 'refused') {
1834: if ($response eq 'unavailable') {
1835: $outcome = $response;
1836: } else {
1837: $outcome = 'ok';
1838: my @matches = split(/\n/,$response);
1839: foreach my $match (@matches) {
1840: my ($key,$value) = split(/=/,$match);
1841: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1842: }
1843: }
1844: }
1845: }
1846: return ($outcome,%results);
1847: }
1848:
1849: sub usersearch {
1850: my ($srch) = @_;
1851: my $dom = $srch->{'srchdomain'};
1852: my %results;
1853: my %libserv = &all_library();
1854: my $query = 'usersearch';
1855: foreach my $tryserver (keys(%libserv)) {
1856: if (&host_domain($tryserver) eq $dom) {
1857: my $host=&hostname($tryserver);
1858: my $queryid=
1859: &reply("querysend:".&escape($query).':'.
1860: &escape($srch->{'srchby'}).':'.
1861: &escape($srch->{'srchtype'}).':'.
1862: &escape($srch->{'srchterm'}),$tryserver);
1863: if ($queryid !~/^\Q$host\E\_/) {
1864: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1865: next;
1866: }
1867: my $reply = &get_query_reply($queryid);
1868: my $maxtries = 1;
1869: my $tries = 1;
1870: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1871: $reply = &get_query_reply($queryid);
1872: $tries ++;
1873: }
1874: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1875: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1876: } else {
1877: my @matches;
1878: if ($reply =~ /\n/) {
1879: @matches = split(/\n/,$reply);
1880: } else {
1881: @matches = split(/\&/,$reply);
1882: }
1883: foreach my $match (@matches) {
1884: my ($uname,$udom,%userhash);
1885: foreach my $entry (split(/:/,$match)) {
1886: my ($key,$value) =
1887: map {&unescape($_);} split(/=/,$entry);
1888: $userhash{$key} = $value;
1889: if ($key eq 'username') {
1890: $uname = $value;
1891: } elsif ($key eq 'domain') {
1892: $udom = $value;
1893: }
1894: }
1895: $results{$uname.':'.$udom} = \%userhash;
1896: }
1897: }
1898: }
1899: }
1900: return %results;
1901: }
1902:
1903: sub get_instuser {
1904: my ($udom,$uname,$id) = @_;
1905: my $homeserver = &domain($udom,'primary');
1906: my ($outcome,%results);
1907: if ($homeserver ne '') {
1908: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1909: &escape($id).':'.&escape($udom),$homeserver);
1910: my $host=&hostname($homeserver);
1911: if ($queryid !~/^\Q$host\E\_/) {
1912: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1913: return;
1914: }
1915: my $response = &get_query_reply($queryid);
1916: my $maxtries = 5;
1917: my $tries = 1;
1918: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1919: $response = &get_query_reply($queryid);
1920: $tries ++;
1921: }
1922: if (!&error($response) && $response ne 'refused') {
1923: if ($response eq 'unavailable') {
1924: $outcome = $response;
1925: } else {
1926: $outcome = 'ok';
1927: my @matches = split(/\n/,$response);
1928: foreach my $match (@matches) {
1929: my ($key,$value) = split(/=/,$match);
1930: $results{&unescape($key)} = &thaw_unescape($value);
1931: }
1932: }
1933: }
1934: }
1935: my %userinfo;
1936: if (ref($results{$uname}) eq 'HASH') {
1937: %userinfo = %{$results{$uname}};
1938: }
1939: return ($outcome,%userinfo);
1940: }
1941:
1942: sub get_multiple_instusers {
1943: my ($udom,$users,$caller) = @_;
1944: my ($outcome,$results);
1945: if (ref($users) eq 'HASH') {
1946: my $count = keys(%{$users});
1947: my $requested = &freeze_escape($users);
1948: my $homeserver = &domain($udom,'primary');
1949: if ($homeserver ne '') {
1950: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
1951: my $host=&hostname($homeserver);
1952: if ($queryid !~/^\Q$host\E\_/) {
1953: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
1954: ' for host: '.$homeserver.'in domain '.$udom);
1955: return ($outcome,$results);
1956: }
1957: my $response = &get_query_reply($queryid);
1958: my $maxtries = 5;
1959: if ($count > 100) {
1960: $maxtries = 1+int($count/20);
1961: }
1962: my $tries = 1;
1963: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
1964: $response = &get_query_reply($queryid);
1965: $tries ++;
1966: }
1967: if ($response eq '') {
1968: $results = {};
1969: foreach my $key (keys(%{$users})) {
1970: my ($uname,$id);
1971: if ($caller eq 'id') {
1972: $id = $key;
1973: } else {
1974: $uname = $key;
1975: }
1976: my ($resp,%info) = &get_instuser($udom,$uname,$id);
1977: $outcome = $resp;
1978: if ($resp eq 'ok') {
1979: %{$results} = (%{$results}, %info);
1980: } else {
1981: last;
1982: }
1983: }
1984: } elsif(!&error($response) && ($response ne 'refused')) {
1985: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
1986: $outcome = $response;
1987: } else {
1988: ($outcome,my $userdata) = split(/=/,$response,2);
1989: if ($outcome eq 'ok') {
1990: $results = &thaw_unescape($userdata);
1991: }
1992: }
1993: }
1994: }
1995: }
1996: return ($outcome,$results);
1997: }
1998:
1999: sub inst_rulecheck {
2000: my ($udom,$uname,$id,$item,$rules) = @_;
2001: my %returnhash;
2002: if ($udom ne '') {
2003: if (ref($rules) eq 'ARRAY') {
2004: @{$rules} = map {&escape($_);} (@{$rules});
2005: my $rulestr = join(':',@{$rules});
2006: my $homeserver=&domain($udom,'primary');
2007: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2008: my $response;
2009: if ($item eq 'username') {
2010: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2011: ':'.&escape($uname).':'.$rulestr,
2012: $homeserver));
2013: } elsif ($item eq 'id') {
2014: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2015: ':'.&escape($id).':'.$rulestr,
2016: $homeserver));
2017: } elsif ($item eq 'selfcreate') {
2018: $response=&unescape(&reply('instselfcreatecheck:'.
2019: &escape($udom).':'.&escape($uname).
2020: ':'.$rulestr,$homeserver));
2021: }
2022: if ($response ne 'refused') {
2023: my @pairs=split(/\&/,$response);
2024: foreach my $item (@pairs) {
2025: my ($key,$value)=split(/=/,$item,2);
2026: $key = &unescape($key);
2027: next if ($key =~ /^error: 2 /);
2028: $returnhash{$key}=&thaw_unescape($value);
2029: }
2030: }
2031: }
2032: }
2033: }
2034: return %returnhash;
2035: }
2036:
2037: sub inst_userrules {
2038: my ($udom,$check) = @_;
2039: my (%ruleshash,@ruleorder);
2040: if ($udom ne '') {
2041: my $homeserver=&domain($udom,'primary');
2042: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2043: my $response;
2044: if ($check eq 'id') {
2045: $response=&reply('instidrules:'.&escape($udom),
2046: $homeserver);
2047: } elsif ($check eq 'email') {
2048: $response=&reply('instemailrules:'.&escape($udom),
2049: $homeserver);
2050: } else {
2051: $response=&reply('instuserrules:'.&escape($udom),
2052: $homeserver);
2053: }
2054: if (($response ne 'refused') && ($response ne 'error') &&
2055: ($response ne 'unknown_cmd') &&
2056: ($response ne 'no_such_host')) {
2057: my ($hashitems,$orderitems) = split(/:/,$response);
2058: my @pairs=split(/\&/,$hashitems);
2059: foreach my $item (@pairs) {
2060: my ($key,$value)=split(/=/,$item,2);
2061: $key = &unescape($key);
2062: next if ($key =~ /^error: 2 /);
2063: $ruleshash{$key}=&thaw_unescape($value);
2064: }
2065: my @esc_order = split(/\&/,$orderitems);
2066: foreach my $item (@esc_order) {
2067: push(@ruleorder,&unescape($item));
2068: }
2069: }
2070: }
2071: }
2072: return (\%ruleshash,\@ruleorder);
2073: }
2074:
2075: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2076:
2077: sub get_domain_defaults {
2078: my ($domain,$ignore_cache) = @_;
2079: return if (($domain eq '') || ($domain eq 'public'));
2080: my $cachetime = 60*60*24;
2081: unless ($ignore_cache) {
2082: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2083: if (defined($cached)) {
2084: if (ref($result) eq 'HASH') {
2085: return %{$result};
2086: }
2087: }
2088: }
2089: my %domdefaults;
2090: my %domconfig =
2091: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2092: 'requestcourses','inststatus',
2093: 'coursedefaults','usersessions',
2094: 'requestauthor','selfenrollment',
2095: 'coursecategories'],$domain);
2096: my @coursetypes = ('official','unofficial','community','textbook');
2097: if (ref($domconfig{'defaults'}) eq 'HASH') {
2098: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2099: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2100: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2101: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2102: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2103: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2104: } else {
2105: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2106: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2107: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2108: }
2109: if (ref($domconfig{'quotas'}) eq 'HASH') {
2110: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2111: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2112: } else {
2113: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2114: }
2115: my @usertools = ('aboutme','blog','webdav','portfolio');
2116: foreach my $item (@usertools) {
2117: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2118: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2119: }
2120: }
2121: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2122: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2123: }
2124: }
2125: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2126: foreach my $item ('official','unofficial','community','textbook') {
2127: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2128: }
2129: }
2130: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2131: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2132: }
2133: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2134: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2135: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2136: }
2137: }
2138: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2139: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2140: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2141: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2142: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2143: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2144: }
2145: foreach my $type (@coursetypes) {
2146: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2147: unless ($type eq 'community') {
2148: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2149: }
2150: }
2151: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2152: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2153: }
2154: if ($domdefaults{'postsubmit'} eq 'on') {
2155: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2156: $domdefaults{$type.'postsubtimeout'} =
2157: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2158: }
2159: }
2160: }
2161: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2162: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2163: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2164: if (@clonecodes) {
2165: $domdefaults{'canclone'} = join('+',@clonecodes);
2166: }
2167: }
2168: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2169: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2170: }
2171: }
2172: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2173: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2174: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2175: }
2176: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2177: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2178: }
2179: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2180: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2181: }
2182: }
2183: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2184: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2185: my @settings = ('types','registered','enroll_dates','access_dates','section',
2186: 'approval','limit');
2187: foreach my $type (@coursetypes) {
2188: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2189: my @mgrdc = ();
2190: foreach my $item (@settings) {
2191: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2192: push(@mgrdc,$item);
2193: }
2194: }
2195: if (@mgrdc) {
2196: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2197: }
2198: }
2199: }
2200: }
2201: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2202: foreach my $type (@coursetypes) {
2203: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2204: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2205: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2206: }
2207: }
2208: }
2209: }
2210: }
2211: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2212: $domdefaults{'catauth'} = 'std';
2213: $domdefaults{'catunauth'} = 'std';
2214: if ($domconfig{'coursecategories'}{'auth'}) {
2215: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2216: }
2217: if ($domconfig{'coursecategories'}{'unauth'}) {
2218: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2219: }
2220: }
2221: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2222: return %domdefaults;
2223: }
2224:
2225: # --------------------------------------------------- Assign a key to a student
2226:
2227: sub assign_access_key {
2228: #
2229: # a valid key looks like uname:udom#comments
2230: # comments are being appended
2231: #
2232: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2233: $kdom=
2234: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2235: $knum=
2236: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2237: $cdom=
2238: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2239: $cnum=
2240: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2241: $udom=$env{'user.name'} unless (defined($udom));
2242: $uname=$env{'user.domain'} unless (defined($uname));
2243: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2244: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2245: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2246: # assigned to this person
2247: # - this should not happen,
2248: # unless something went wrong
2249: # the first time around
2250: # ready to assign
2251: $logentry=$1.'; '.$logentry;
2252: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2253: $kdom,$knum) eq 'ok') {
2254: # key now belongs to user
2255: my $envkey='key.'.$cdom.'_'.$cnum;
2256: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2257: &appenv({'environment.'.$envkey => $ckey});
2258: return 'ok';
2259: } else {
2260: return
2261: 'error: Count not permanently assign key, will need to be re-entered later.';
2262: }
2263: } else {
2264: return 'error: Could not assign key, try again later.';
2265: }
2266: } elsif (!$existing{$ckey}) {
2267: # the key does not exist
2268: return 'error: The key does not exist';
2269: } else {
2270: # the key is somebody else's
2271: return 'error: The key is already in use';
2272: }
2273: }
2274:
2275: # ------------------------------------------ put an additional comment on a key
2276:
2277: sub comment_access_key {
2278: #
2279: # a valid key looks like uname:udom#comments
2280: # comments are being appended
2281: #
2282: my ($ckey,$cdom,$cnum,$logentry)=@_;
2283: $cdom=
2284: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2285: $cnum=
2286: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2287: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2288: if ($existing{$ckey}) {
2289: $existing{$ckey}.='; '.$logentry;
2290: # ready to assign
2291: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2292: $cdom,$cnum) eq 'ok') {
2293: return 'ok';
2294: } else {
2295: return 'error: Count not store comment.';
2296: }
2297: } else {
2298: # the key does not exist
2299: return 'error: The key does not exist';
2300: }
2301: }
2302:
2303: # ------------------------------------------------------ Generate a set of keys
2304:
2305: sub generate_access_keys {
2306: my ($number,$cdom,$cnum,$logentry)=@_;
2307: $cdom=
2308: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2309: $cnum=
2310: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2311: unless (&allowed('mky',$cdom)) { return 0; }
2312: unless (($cdom) && ($cnum)) { return 0; }
2313: if ($number>10000) { return 0; }
2314: sleep(2); # make sure don't get same seed twice
2315: srand(time()^($$+($$<<15))); # from "Programming Perl"
2316: my $total=0;
2317: for (my $i=1;$i<=$number;$i++) {
2318: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2319: sprintf("%lx",int(100000*rand)).'-'.
2320: sprintf("%lx",int(100000*rand));
2321: $newkey=~s/1/g/g; # folks mix up 1 and l
2322: $newkey=~s/0/h/g; # and also 0 and O
2323: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2324: if ($existing{$newkey}) {
2325: $i--;
2326: } else {
2327: if (&put('accesskeys',
2328: { $newkey => '# generated '.localtime().
2329: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2330: '; '.$logentry },
2331: $cdom,$cnum) eq 'ok') {
2332: $total++;
2333: }
2334: }
2335: }
2336: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2337: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2338: return $total;
2339: }
2340:
2341: # ------------------------------------------------------- Validate an accesskey
2342:
2343: sub validate_access_key {
2344: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2345: $cdom=
2346: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2347: $cnum=
2348: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2349: $udom=$env{'user.domain'} unless (defined($udom));
2350: $uname=$env{'user.name'} unless (defined($uname));
2351: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2352: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2353: }
2354:
2355: # ------------------------------------- Find the section of student in a course
2356: sub devalidate_getsection_cache {
2357: my ($udom,$unam,$courseid)=@_;
2358: my $hashid="$udom:$unam:$courseid";
2359: &devalidate_cache_new('getsection',$hashid);
2360: }
2361:
2362: sub courseid_to_courseurl {
2363: my ($courseid) = @_;
2364: #already url style courseid
2365: return $courseid if ($courseid =~ m{^/});
2366:
2367: if (exists($env{'course.'.$courseid.'.num'})) {
2368: my $cnum = $env{'course.'.$courseid.'.num'};
2369: my $cdom = $env{'course.'.$courseid.'.domain'};
2370: return "/$cdom/$cnum";
2371: }
2372:
2373: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2374: if (exists($courseinfo{'num'})) {
2375: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2376: }
2377:
2378: return undef;
2379: }
2380:
2381: sub getsection {
2382: my ($udom,$unam,$courseid)=@_;
2383: my $cachetime=1800;
2384:
2385: my $hashid="$udom:$unam:$courseid";
2386: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2387: if (defined($cached)) { return $result; }
2388:
2389: my %Pending;
2390: my %Expired;
2391: #
2392: # Each role can either have not started yet (pending), be active,
2393: # or have expired.
2394: #
2395: # If there is an active role, we are done.
2396: #
2397: # If there is more than one role which has not started yet,
2398: # choose the one which will start sooner
2399: # If there is one role which has not started yet, return it.
2400: #
2401: # If there is more than one expired role, choose the one which ended last.
2402: # If there is a role which has expired, return it.
2403: #
2404: $courseid = &courseid_to_courseurl($courseid);
2405: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2406: foreach my $key (keys(%roleshash)) {
2407: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2408: my $section=$1;
2409: if ($key eq $courseid.'_st') { $section=''; }
2410: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2411: my $now=time;
2412: if (defined($end) && $end && ($now > $end)) {
2413: $Expired{$end}=$section;
2414: next;
2415: }
2416: if (defined($start) && $start && ($now < $start)) {
2417: $Pending{$start}=$section;
2418: next;
2419: }
2420: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2421: }
2422: #
2423: # Presumedly there will be few matching roles from the above
2424: # loop and the sorting time will be negligible.
2425: if (scalar(keys(%Pending))) {
2426: my ($time) = sort {$a <=> $b} keys(%Pending);
2427: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2428: }
2429: if (scalar(keys(%Expired))) {
2430: my @sorted = sort {$a <=> $b} keys(%Expired);
2431: my $time = pop(@sorted);
2432: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2433: }
2434: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2435: }
2436:
2437: sub save_cache {
2438: &purge_remembered();
2439: #&Apache::loncommon::validate_page();
2440: undef(%env);
2441: undef($env_loaded);
2442: }
2443:
2444: my $to_remember=-1;
2445: my %remembered;
2446: my %accessed;
2447: my $kicks=0;
2448: my $hits=0;
2449: sub make_key {
2450: my ($name,$id) = @_;
2451: if (length($id) > 65
2452: && length(&escape($id)) > 200) {
2453: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2454: }
2455: return &escape($name.':'.$id);
2456: }
2457:
2458: sub devalidate_cache_new {
2459: my ($name,$id,$debug) = @_;
2460: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2461: $id=&make_key($name,$id);
2462: $memcache->delete($id);
2463: delete($remembered{$id});
2464: delete($accessed{$id});
2465: }
2466:
2467: sub is_cached_new {
2468: my ($name,$id,$debug) = @_;
2469: $id=&make_key($name,$id);
2470: if (exists($remembered{$id})) {
2471: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2472: $accessed{$id}=[&gettimeofday()];
2473: $hits++;
2474: return ($remembered{$id},1);
2475: }
2476: my $value = $memcache->get($id);
2477: if (!(defined($value))) {
2478: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2479: return (undef,undef);
2480: }
2481: if ($value eq '__undef__') {
2482: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2483: $value=undef;
2484: }
2485: &make_room($id,$value,$debug);
2486: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2487: return ($value,1);
2488: }
2489:
2490: sub do_cache_new {
2491: my ($name,$id,$value,$time,$debug) = @_;
2492: $id=&make_key($name,$id);
2493: my $setvalue=$value;
2494: if (!defined($setvalue)) {
2495: $setvalue='__undef__';
2496: }
2497: if (!defined($time) ) {
2498: $time=600;
2499: }
2500: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2501: my $result = $memcache->set($id,$setvalue,$time);
2502: if (! $result) {
2503: &logthis("caching of id -> $id failed");
2504: $memcache->disconnect_all();
2505: }
2506: # need to make a copy of $value
2507: &make_room($id,$value,$debug);
2508: return $value;
2509: }
2510:
2511: sub make_room {
2512: my ($id,$value,$debug)=@_;
2513:
2514: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2515: : $value;
2516: if ($to_remember<0) { return; }
2517: $accessed{$id}=[&gettimeofday()];
2518: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2519: my $to_kick;
2520: my $max_time=0;
2521: foreach my $other (keys(%accessed)) {
2522: if (&tv_interval($accessed{$other}) > $max_time) {
2523: $to_kick=$other;
2524: $max_time=&tv_interval($accessed{$other});
2525: }
2526: }
2527: delete($remembered{$to_kick});
2528: delete($accessed{$to_kick});
2529: $kicks++;
2530: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2531: return;
2532: }
2533:
2534: sub purge_remembered {
2535: #&logthis("Tossing ".scalar(keys(%remembered)));
2536: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2537: undef(%remembered);
2538: undef(%accessed);
2539: }
2540: # ------------------------------------- Read an entry from a user's environment
2541:
2542: sub userenvironment {
2543: my ($udom,$unam,@what)=@_;
2544: my $items;
2545: foreach my $item (@what) {
2546: $items.=&escape($item).'&';
2547: }
2548: $items=~s/\&$//;
2549: my %returnhash=();
2550: my $uhome = &homeserver($unam,$udom);
2551: unless ($uhome eq 'no_host') {
2552: my @answer=split(/\&/,
2553: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2554: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2555: return %returnhash;
2556: }
2557: my $i;
2558: for ($i=0;$i<=$#what;$i++) {
2559: $returnhash{$what[$i]}=&unescape($answer[$i]);
2560: }
2561: }
2562: return %returnhash;
2563: }
2564:
2565: # ---------------------------------------------------------- Get a studentphoto
2566: sub studentphoto {
2567: my ($udom,$unam,$ext) = @_;
2568: my $home=&Apache::lonnet::homeserver($unam,$udom);
2569: if (defined($env{'request.course.id'})) {
2570: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2571: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2572: return(&retrievestudentphoto($udom,$unam,$ext));
2573: } else {
2574: my ($result,$perm_reqd)=
2575: &Apache::lonnet::auto_photo_permission($unam,$udom);
2576: if ($result eq 'ok') {
2577: if (!($perm_reqd eq 'yes')) {
2578: return(&retrievestudentphoto($udom,$unam,$ext));
2579: }
2580: }
2581: }
2582: }
2583: } else {
2584: my ($result,$perm_reqd) =
2585: &Apache::lonnet::auto_photo_permission($unam,$udom);
2586: if ($result eq 'ok') {
2587: if (!($perm_reqd eq 'yes')) {
2588: return(&retrievestudentphoto($udom,$unam,$ext));
2589: }
2590: }
2591: }
2592: return '/adm/lonKaputt/lonlogo_broken.gif';
2593: }
2594:
2595: sub retrievestudentphoto {
2596: my ($udom,$unam,$ext,$type) = @_;
2597: my $home=&Apache::lonnet::homeserver($unam,$udom);
2598: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2599: if ($ret eq 'ok') {
2600: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2601: if ($type eq 'thumbnail') {
2602: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2603: }
2604: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2605: return $tokenurl;
2606: } else {
2607: if ($type eq 'thumbnail') {
2608: return '/adm/lonKaputt/genericstudent_tn.gif';
2609: } else {
2610: return '/adm/lonKaputt/lonlogo_broken.gif';
2611: }
2612: }
2613: }
2614:
2615: # -------------------------------------------------------------------- New chat
2616:
2617: sub chatsend {
2618: my ($newentry,$anon,$group)=@_;
2619: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2620: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2621: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2622: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2623: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2624: &escape($newentry)).':'.$group,$chome);
2625: }
2626:
2627: # ------------------------------------------ Find current version of a resource
2628:
2629: sub getversion {
2630: my $fname=&clutter(shift);
2631: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2632: return ¤tversion(&filelocation('',$fname));
2633: }
2634:
2635: sub currentversion {
2636: my $fname=shift;
2637: my $author=$fname;
2638: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2639: my ($udom,$uname)=split(/\//,$author);
2640: my $home=&homeserver($uname,$udom);
2641: if ($home eq 'no_host') {
2642: return -1;
2643: }
2644: my $answer=&reply("currentversion:$fname",$home);
2645: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2646: return -1;
2647: }
2648: return $answer;
2649: }
2650:
2651: #
2652: # Return special version number of resource if set by override, empty otherwise
2653: #
2654: sub usedversion {
2655: my $fname=shift;
2656: unless ($fname) { $fname=$env{'request.uri'}; }
2657: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2658: if ($urlversion) { return $urlversion; }
2659: return '';
2660: }
2661:
2662: # ----------------------------- Subscribe to a resource, return URL if possible
2663:
2664: sub subscribe {
2665: my $fname=shift;
2666: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2667: $fname=~s/[\n\r]//g;
2668: my $author=$fname;
2669: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2670: my ($udom,$uname)=split(/\//,$author);
2671: my $home=homeserver($uname,$udom);
2672: if ($home eq 'no_host') {
2673: return 'not_found';
2674: }
2675: my $answer=reply("sub:$fname",$home);
2676: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2677: $answer.=' by '.$home;
2678: }
2679: return $answer;
2680: }
2681:
2682: # -------------------------------------------------------------- Replicate file
2683:
2684: sub repcopy {
2685: my $filename=shift;
2686: $filename=~s/\/+/\//g;
2687: my $londocroot = $perlvar{'lonDocRoot'};
2688: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2689: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2690: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2691: $filename=~m{^/*(uploaded|editupload)/}) {
2692: return &repcopy_userfile($filename);
2693: }
2694: $filename=~s/[\n\r]//g;
2695: my $transname="$filename.in.transfer";
2696: # FIXME: this should flock
2697: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2698: my $remoteurl=subscribe($filename);
2699: if ($remoteurl =~ /^con_lost by/) {
2700: &logthis("Subscribe returned $remoteurl: $filename");
2701: return 'unavailable';
2702: } elsif ($remoteurl eq 'not_found') {
2703: #&logthis("Subscribe returned not_found: $filename");
2704: return 'not_found';
2705: } elsif ($remoteurl =~ /^rejected by/) {
2706: &logthis("Subscribe returned $remoteurl: $filename");
2707: return 'forbidden';
2708: } elsif ($remoteurl eq 'directory') {
2709: return 'ok';
2710: } else {
2711: my $author=$filename;
2712: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2713: my ($udom,$uname)=split(/\//,$author);
2714: my $home=homeserver($uname,$udom);
2715: unless ($home eq $perlvar{'lonHostID'}) {
2716: my @parts=split(/\//,$filename);
2717: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2718: if ($path ne "$londocroot/res") {
2719: &logthis("Malconfiguration for replication: $filename");
2720: return 'bad_request';
2721: }
2722: my $count;
2723: for ($count=5;$count<$#parts;$count++) {
2724: $path.="/$parts[$count]";
2725: if ((-e $path)!=1) {
2726: mkdir($path,0777);
2727: }
2728: }
2729: my $ua=new LWP::UserAgent;
2730: my $request=new HTTP::Request('GET',"$remoteurl");
2731: my $response=$ua->request($request,$transname);
2732: if ($response->is_error()) {
2733: unlink($transname);
2734: my $message=$response->status_line;
2735: &logthis("<font color=\"blue\">WARNING:"
2736: ." LWP get: $message: $filename</font>");
2737: return 'unavailable';
2738: } else {
2739: if ($remoteurl!~/\.meta$/) {
2740: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2741: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2742: if ($mresponse->is_error()) {
2743: unlink($filename.'.meta');
2744: &logthis(
2745: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2746: }
2747: }
2748: rename($transname,$filename);
2749: return 'ok';
2750: }
2751: }
2752: }
2753: }
2754:
2755: # ------------------------------------------------ Get server side include body
2756: sub ssi_body {
2757: my ($filelink,%form)=@_;
2758: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2759: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2760: }
2761: my $output='';
2762: my $response;
2763: if ($filelink=~/^https?\:/) {
2764: ($output,$response)=&externalssi($filelink);
2765: } else {
2766: $filelink .= $filelink=~/\?/ ? '&' : '?';
2767: $filelink .= 'inhibitmenu=yes';
2768: ($output,$response)=&ssi($filelink,%form);
2769: }
2770: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2771: $output=~s/^.*?\<body[^\>]*\>//si;
2772: $output=~s/\<\/body\s*\>.*?$//si;
2773: if (wantarray) {
2774: return ($output, $response);
2775: } else {
2776: return $output;
2777: }
2778: }
2779:
2780: # --------------------------------------------------------- Server Side Include
2781:
2782: sub absolute_url {
2783: my ($host_name) = @_;
2784: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2785: if ($host_name eq '') {
2786: $host_name = $ENV{'SERVER_NAME'};
2787: }
2788: return $protocol.$host_name;
2789: }
2790:
2791: #
2792: # Server side include.
2793: # Parameters:
2794: # fn Possibly encrypted resource name/id.
2795: # form Hash that describes how the rendering should be done
2796: # and other things.
2797: # Returns:
2798: # Scalar context: The content of the response.
2799: # Array context: 2 element list of the content and the full response object.
2800: #
2801: sub ssi {
2802:
2803: my ($fn,%form)=@_;
2804: my $ua=new LWP::UserAgent;
2805: my $request;
2806:
2807: $form{'no_update_last_known'}=1;
2808: &Apache::lonenc::check_encrypt(\$fn);
2809: if (%form) {
2810: $request=new HTTP::Request('POST',&absolute_url().$fn);
2811: $request->content(join('&',map {
2812: my $name = escape($_);
2813: "$name=" . ( ref($form{$_}) eq 'ARRAY'
2814: ? join("&$name=", map {escape($_) } @{$form{$_}})
2815: : &escape($form{$_}) );
2816: } keys(%form)));
2817: } else {
2818: $request=new HTTP::Request('GET',&absolute_url().$fn);
2819: }
2820:
2821: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2822: my $response= $ua->request($request);
2823: my $content = $response->content;
2824:
2825:
2826: if (wantarray) {
2827: return ($content, $response);
2828: } else {
2829: return $content;
2830: }
2831: }
2832:
2833: sub externalssi {
2834: my ($url)=@_;
2835: my $ua=new LWP::UserAgent;
2836: my $request=new HTTP::Request('GET',$url);
2837: my $response=$ua->request($request);
2838: if (wantarray) {
2839: return ($response->content, $response);
2840: } else {
2841: return $response->content;
2842: }
2843: }
2844:
2845: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2846:
2847: sub allowuploaded {
2848: my ($srcurl,$url)=@_;
2849: $url=&clutter(&declutter($url));
2850: my $dir=$url;
2851: $dir=~s/\/[^\/]+$//;
2852: my %httpref=();
2853: my $httpurl=&hreflocation('',$url);
2854: $httpref{'httpref.'.$httpurl}=$srcurl;
2855: &Apache::lonnet::appenv(\%httpref);
2856: }
2857:
2858: #
2859: # Determine if the current user should be able to edit a particular resource,
2860: # when viewing in course context.
2861: # (a) When viewing resource used to determine if "Edit" item is included in
2862: # Functions.
2863: # (b) When displaying folder contents in course editor, used to determine if
2864: # "Edit" link will be displayed alongside resource.
2865: #
2866: # input: six args -- filename (decluttered), course number, course domain,
2867: # url, symb (if registered) and group (if this is a group
2868: # item -- e.g., bulletin board, group page etc.).
2869: # output: array of five scalars --
2870: # $cfile -- url for file editing if editable on current server
2871: # $home -- homeserver of resource (i.e., for author if published,
2872: # or course if uploaded.).
2873: # $switchserver -- 1 if server switch will be needed.
2874: # $forceedit -- 1 if icon/link should be to go to edit mode
2875: # $forceview -- 1 if icon/link should be to go to view mode
2876: #
2877:
2878: sub can_edit_resource {
2879: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2880: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2881: #
2882: # For aboutme pages user can only edit his/her own.
2883: #
2884: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2885: my ($sdom,$sname) = ($1,$2);
2886: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2887: $home = $env{'user.home'};
2888: $cfile = $resurl;
2889: if ($env{'form.forceedit'}) {
2890: $forceview = 1;
2891: } else {
2892: $forceedit = 1;
2893: }
2894: return ($cfile,$home,$switchserver,$forceedit,$forceview);
2895: } else {
2896: return;
2897: }
2898: }
2899:
2900: if ($env{'request.course.id'}) {
2901: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
2902: if ($group ne '') {
2903: # if this is a group homepage or group bulletin board, check group privs
2904: my $allowed = 0;
2905: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
2906: if ((&allowed('mdg',$env{'request.course.id'}.
2907: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2908: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2909: $allowed = 1;
2910: }
2911: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
2912: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
2913: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
2914: $allowed = 1;
2915: }
2916: }
2917: if ($allowed) {
2918: $home=&homeserver($cnum,$cdom);
2919: if ($env{'form.forceedit'}) {
2920: $forceview = 1;
2921: } else {
2922: $forceedit = 1;
2923: }
2924: $cfile = $resurl;
2925: } else {
2926: return;
2927: }
2928: } else {
2929: if ($resurl =~ m{^/?adm/viewclasslist$}) {
2930: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
2931: return;
2932: }
2933: } elsif (!$crsedit) {
2934: #
2935: # No edit allowed where CC has switched to student role.
2936: #
2937: return;
2938: }
2939: }
2940: }
2941:
2942: if ($file ne '') {
2943: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
2944: if (&is_course_upload($file,$cnum,$cdom)) {
2945: $uploaded = 1;
2946: $incourse = 1;
2947: if ($file =~/\.(htm|html|css|js|txt)$/) {
2948: $cfile = &hreflocation('',$file);
2949: if ($env{'form.forceedit'}) {
2950: $forceview = 1;
2951: } else {
2952: $forceedit = 1;
2953: }
2954: }
2955: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
2956: $incourse = 1;
2957: if ($env{'form.forceedit'}) {
2958: $forceview = 1;
2959: } else {
2960: $forceedit = 1;
2961: }
2962: $cfile = $resurl;
2963: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
2964: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
2965: $incourse = 1;
2966: if ($env{'form.forceedit'}) {
2967: $forceview = 1;
2968: } else {
2969: $forceedit = 1;
2970: }
2971: $cfile = $resurl;
2972: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
2973: $incourse = 1;
2974: $cfile = $resurl.'/smpedit';
2975: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
2976: $incourse = 1;
2977: if ($env{'form.forceedit'}) {
2978: $forceview = 1;
2979: } else {
2980: $forceedit = 1;
2981: }
2982: $cfile = $resurl;
2983: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
2984: $incourse = 1;
2985: if ($env{'form.forceedit'}) {
2986: $forceview = 1;
2987: } else {
2988: $forceedit = 1;
2989: }
2990: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
2991: }
2992: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
2993: my $template = '/res/lib/templates/simpleproblem.problem';
2994: if (&is_on_map($template)) {
2995: $incourse = 1;
2996: $forceview = 1;
2997: $cfile = $template;
2998: }
2999: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3000: $incourse = 1;
3001: if ($env{'form.forceedit'}) {
3002: $forceview = 1;
3003: } else {
3004: $forceedit = 1;
3005: }
3006: $cfile = $resurl;
3007: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3008: $incourse = 1;
3009: $forceview = 1;
3010: if ($symb) {
3011: my ($map,$id,$res)=&decode_symb($symb);
3012: $env{'request.symb'} = $symb;
3013: $cfile = &clutter($res);
3014: } else {
3015: $cfile = $env{'form.suppurl'};
3016: $cfile =~ s{^http://}{};
3017: $cfile = '/adm/wrapper/ext/'.$cfile;
3018: }
3019: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3020: if ($env{'form.forceedit'}) {
3021: $forceview = 1;
3022: } else {
3023: $forceedit = 1;
3024: }
3025: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3026: }
3027: }
3028: if ($uploaded || $incourse) {
3029: $home=&homeserver($cnum,$cdom);
3030: } elsif ($file !~ m{/$}) {
3031: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3032: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3033: # Check that the user has permission to edit this resource
3034: my $setpriv = 1;
3035: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3036: if (defined($cfudom)) {
3037: $home=&homeserver($cfuname,$cfudom);
3038: $cfile=$file;
3039: }
3040: }
3041: if (($cfile ne '') && (!$incourse || $uploaded) &&
3042: (($home ne '') && ($home ne 'no_host'))) {
3043: my @ids=¤t_machine_ids();
3044: unless (grep(/^\Q$home\E$/,@ids)) {
3045: $switchserver=1;
3046: }
3047: }
3048: }
3049: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3050: }
3051:
3052: sub is_course_upload {
3053: my ($file,$cnum,$cdom) = @_;
3054: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3055: $uploadpath =~ s{^\/}{};
3056: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3057: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3058: return 1;
3059: }
3060: return;
3061: }
3062:
3063: sub in_course {
3064: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3065: if ($hideprivileged) {
3066: my $skipuser;
3067: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3068: my @possdoms = ($cdom);
3069: if ($coursehash{'checkforpriv'}) {
3070: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3071: }
3072: if (&privileged($uname,$udom,\@possdoms)) {
3073: $skipuser = 1;
3074: if ($coursehash{'nothideprivileged'}) {
3075: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3076: my $user;
3077: if ($item =~ /:/) {
3078: $user = $item;
3079: } else {
3080: $user = join(':',split(/[\@]/,$item));
3081: }
3082: if ($user eq $uname.':'.$udom) {
3083: undef($skipuser);
3084: last;
3085: }
3086: }
3087: }
3088: if ($skipuser) {
3089: return 0;
3090: }
3091: }
3092: }
3093: $type ||= 'any';
3094: if (!defined($cdom) || !defined($cnum)) {
3095: my $cid = $env{'request.course.id'};
3096: $cdom = $env{'course.'.$cid.'.domain'};
3097: $cnum = $env{'course.'.$cid.'.num'};
3098: }
3099: my $typesref;
3100: if (($type eq 'any') || ($type eq 'all')) {
3101: $typesref = ['active','previous','future'];
3102: } elsif ($type eq 'previous' || $type eq 'future') {
3103: $typesref = [$type];
3104: }
3105: my %roles = &get_my_roles($uname,$udom,'userroles',
3106: $typesref,undef,[$cdom]);
3107: my ($tmp) = keys(%roles);
3108: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3109: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3110: if (@course_roles > 0) {
3111: return 1;
3112: }
3113: return 0;
3114: }
3115:
3116: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3117: # input: action, courseID, current domain, intended
3118: # path to file, source of file, instruction to parse file for objects,
3119: # ref to hash for embedded objects,
3120: # ref to hash for codebase of java objects.
3121: # reference to scalar to accommodate mime type determined
3122: # from File::MMagic if $parser = parse.
3123: #
3124: # output: url to file (if action was uploaddoc),
3125: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3126: #
3127: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3128: # course.
3129: #
3130: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3131: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3132: # course's home server.
3133: #
3134: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3135: # be copied from $source (current location) to
3136: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3137: # and will then be copied to
3138: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3139: # course's home server.
3140: #
3141: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3142: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3143: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3144: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3145: # in course's home server.
3146: #
3147:
3148: sub process_coursefile {
3149: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3150: $mimetype)=@_;
3151: my $fetchresult;
3152: my $home=&homeserver($docuname,$docudom);
3153: if ($action eq 'propagate') {
3154: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3155: $home);
3156: } else {
3157: my $fpath = '';
3158: my $fname = $file;
3159: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3160: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3161: my $filepath = &build_filepath($fpath);
3162: if ($action eq 'copy') {
3163: if ($source eq '') {
3164: $fetchresult = 'no source file';
3165: return $fetchresult;
3166: } else {
3167: my $destination = $filepath.'/'.$fname;
3168: rename($source,$destination);
3169: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3170: $home);
3171: }
3172: } elsif ($action eq 'uploaddoc') {
3173: open(my $fh,'>'.$filepath.'/'.$fname);
3174: print $fh $env{'form.'.$source};
3175: close($fh);
3176: if ($parser eq 'parse') {
3177: my $mm = new File::MMagic;
3178: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3179: if ($type eq 'text/html') {
3180: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3181: unless ($parse_result eq 'ok') {
3182: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3183: }
3184: }
3185: if (ref($mimetype)) {
3186: $$mimetype = $type;
3187: }
3188: }
3189: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3190: $home);
3191: if ($fetchresult eq 'ok') {
3192: return '/uploaded/'.$fpath.'/'.$fname;
3193: } else {
3194: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3195: ' to host '.$home.': '.$fetchresult);
3196: return '/adm/notfound.html';
3197: }
3198: }
3199: }
3200: unless ( $fetchresult eq 'ok') {
3201: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3202: ' to host '.$home.': '.$fetchresult);
3203: }
3204: return $fetchresult;
3205: }
3206:
3207: sub build_filepath {
3208: my ($fpath) = @_;
3209: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3210: unless ($fpath eq '') {
3211: my @parts=split('/',$fpath);
3212: foreach my $part (@parts) {
3213: $filepath.= '/'.$part;
3214: if ((-e $filepath)!=1) {
3215: mkdir($filepath,0777);
3216: }
3217: }
3218: }
3219: return $filepath;
3220: }
3221:
3222: sub store_edited_file {
3223: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3224: my $file = $primary_url;
3225: $file =~ s#^/uploaded/$docudom/$docuname/##;
3226: my $fpath = '';
3227: my $fname = $file;
3228: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3229: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3230: my $filepath = &build_filepath($fpath);
3231: open(my $fh,'>'.$filepath.'/'.$fname);
3232: print $fh $content;
3233: close($fh);
3234: my $home=&homeserver($docuname,$docudom);
3235: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3236: $home);
3237: if ($$fetchresult eq 'ok') {
3238: return '/uploaded/'.$fpath.'/'.$fname;
3239: } else {
3240: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3241: ' to host '.$home.': '.$$fetchresult);
3242: return '/adm/notfound.html';
3243: }
3244: }
3245:
3246: sub clean_filename {
3247: my ($fname,$args)=@_;
3248: # Replace Windows backslashes by forward slashes
3249: $fname=~s/\\/\//g;
3250: if (!$args->{'keep_path'}) {
3251: # Get rid of everything but the actual filename
3252: $fname=~s/^.*\/([^\/]+)$/$1/;
3253: }
3254: # Replace spaces by underscores
3255: $fname=~s/\s+/\_/g;
3256: # Replace all other weird characters by nothing
3257: $fname=~s{[^/\w\.\-]}{}g;
3258: # Replace all .\d. sequences with _\d. so they no longer look like version
3259: # numbers
3260: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3261: return $fname;
3262: }
3263: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3264: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3265: # image with the same aspect ratio as the original, but with dimensions which do
3266: # not exceed $resizewidth and $resizeheight.
3267:
3268: sub resizeImage {
3269: my ($img_path,$resizewidth,$resizeheight) = @_;
3270: my $ima = Image::Magick->new;
3271: my $resized;
3272: if (-e $img_path) {
3273: $ima->Read($img_path);
3274: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3275: my $width = $ima->Get('width');
3276: my $height = $ima->Get('height');
3277: if ($width > $resizewidth) {
3278: my $factor = $width/$resizewidth;
3279: my $newheight = $height/$factor;
3280: $ima->Scale(width=>$resizewidth,height=>$newheight);
3281: $resized = 1;
3282: }
3283: }
3284: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3285: my $width = $ima->Get('width');
3286: my $height = $ima->Get('height');
3287: if ($height > $resizeheight) {
3288: my $factor = $height/$resizeheight;
3289: my $newwidth = $width/$factor;
3290: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3291: $resized = 1;
3292: }
3293: }
3294: if ($resized) {
3295: $ima->Write($img_path);
3296: }
3297: }
3298: return;
3299: }
3300:
3301: # --------------- Take an uploaded file and put it into the userfiles directory
3302: # input: $formname - the contents of the file are in $env{"form.$formname"}
3303: # the desired filename is in $env{"form.$formname.filename"}
3304: # $context - possible values: coursedoc, existingfile, overwrite,
3305: # canceloverwrite, or ''.
3306: # if 'coursedoc': upload to the current course
3307: # if 'existingfile': write file to tmp/overwrites directory
3308: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3309: # $context is passed as argument to &finishuserfileupload
3310: # $subdir - directory in userfile to store the file into
3311: # $parser - instruction to parse file for objects ($parser = parse)
3312: # $allfiles - reference to hash for embedded objects
3313: # $codebase - reference to hash for codebase of java objects
3314: # $desuname - username for permanent storage of uploaded file
3315: # $dsetudom - domain for permanaent storage of uploaded file
3316: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3317: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3318: # $resizewidth - width (pixels) to which to resize uploaded image
3319: # $resizeheight - height (pixels) to which to resize uploaded image
3320: # $mimetype - reference to scalar to accommodate mime type determined
3321: # from File::MMagic.
3322: #
3323: # output: url of file in userspace, or error: <message>
3324: # or /adm/notfound.html if failure to upload occurse
3325:
3326: sub userfileupload {
3327: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3328: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3329: if (!defined($subdir)) { $subdir='unknown'; }
3330: my $fname=$env{'form.'.$formname.'.filename'};
3331: $fname=&clean_filename($fname);
3332: # See if there is anything left
3333: unless ($fname) { return 'error: no uploaded file'; }
3334: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3335: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3336: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3337: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3338: my $now = time;
3339: my $filepath;
3340: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3341: $filepath = 'tmp/helprequests/'.$now;
3342: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3343: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3344: '_'.$env{'user.domain'}.'/pending';
3345: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3346: my ($docuname,$docudom);
3347: if ($destudom) {
3348: $docudom = $destudom;
3349: } else {
3350: $docudom = $env{'user.domain'};
3351: }
3352: if ($destuname) {
3353: $docuname = $destuname;
3354: } else {
3355: $docuname = $env{'user.name'};
3356: }
3357: if (exists($env{'form.group'})) {
3358: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3359: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3360: }
3361: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3362: if ($context eq 'canceloverwrite') {
3363: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3364: if (-e $tempfile) {
3365: my @info = stat($tempfile);
3366: if ($info[9] eq $env{'form.timestamp'}) {
3367: unlink($tempfile);
3368: }
3369: }
3370: return;
3371: }
3372: }
3373: # Create the directory if not present
3374: my @parts=split(/\//,$filepath);
3375: my $fullpath = $perlvar{'lonDaemons'};
3376: for (my $i=0;$i<@parts;$i++) {
3377: $fullpath .= '/'.$parts[$i];
3378: if ((-e $fullpath)!=1) {
3379: mkdir($fullpath,0777);
3380: }
3381: }
3382: open(my $fh,'>'.$fullpath.'/'.$fname);
3383: print $fh $env{'form.'.$formname};
3384: close($fh);
3385: if ($context eq 'existingfile') {
3386: my @info = stat($fullpath.'/'.$fname);
3387: return ($fullpath.'/'.$fname,$info[9]);
3388: } else {
3389: return $fullpath.'/'.$fname;
3390: }
3391: }
3392: if ($subdir eq 'scantron') {
3393: $fname = 'scantron_orig_'.$fname;
3394: } else {
3395: $fname="$subdir/$fname";
3396: }
3397: if ($context eq 'coursedoc') {
3398: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3399: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3400: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3401: return &finishuserfileupload($docuname,$docudom,
3402: $formname,$fname,$parser,$allfiles,
3403: $codebase,$thumbwidth,$thumbheight,
3404: $resizewidth,$resizeheight,$context,$mimetype);
3405: } else {
3406: if ($env{'form.folder'}) {
3407: $fname=$env{'form.folder'}.'/'.$fname;
3408: }
3409: return &process_coursefile('uploaddoc',$docuname,$docudom,
3410: $fname,$formname,$parser,
3411: $allfiles,$codebase,$mimetype);
3412: }
3413: } elsif (defined($destuname)) {
3414: my $docuname=$destuname;
3415: my $docudom=$destudom;
3416: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3417: $parser,$allfiles,$codebase,
3418: $thumbwidth,$thumbheight,
3419: $resizewidth,$resizeheight,$context,$mimetype);
3420: } else {
3421: my $docuname=$env{'user.name'};
3422: my $docudom=$env{'user.domain'};
3423: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3424: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3425: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3426: }
3427: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3428: $parser,$allfiles,$codebase,
3429: $thumbwidth,$thumbheight,
3430: $resizewidth,$resizeheight,$context,$mimetype);
3431: }
3432: }
3433:
3434: sub finishuserfileupload {
3435: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3436: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3437: my $path=$docudom.'/'.$docuname.'/';
3438: my $filepath=$perlvar{'lonDocRoot'};
3439:
3440: my ($fnamepath,$file,$fetchthumb);
3441: $file=$fname;
3442: if ($fname=~m|/|) {
3443: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3444: $path.=$fnamepath.'/';
3445: }
3446: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3447: my $count;
3448: for ($count=4;$count<=$#parts;$count++) {
3449: $filepath.="/$parts[$count]";
3450: if ((-e $filepath)!=1) {
3451: mkdir($filepath,0777);
3452: }
3453: }
3454:
3455: # Save the file
3456: {
3457: if (!open(FH,'>'.$filepath.'/'.$file)) {
3458: &logthis('Failed to create '.$filepath.'/'.$file);
3459: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3460: return '/adm/notfound.html';
3461: }
3462: if ($context eq 'overwrite') {
3463: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3464: my $target = $filepath.'/'.$file;
3465: if (-e $source) {
3466: my @info = stat($source);
3467: if ($info[9] eq $env{'form.timestamp'}) {
3468: unless (&File::Copy::move($source,$target)) {
3469: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3470: return "Moving from $source failed";
3471: }
3472: } else {
3473: return "Temporary file: $source had unexpected date/time for last modification";
3474: }
3475: } else {
3476: return "Temporary file: $source missing";
3477: }
3478: } elsif (!print FH ($env{'form.'.$formname})) {
3479: &logthis('Failed to write to '.$filepath.'/'.$file);
3480: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3481: return '/adm/notfound.html';
3482: }
3483: close(FH);
3484: if ($resizewidth && $resizeheight) {
3485: my $mm = new File::MMagic;
3486: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3487: if ($mime_type =~ m{^image/}) {
3488: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3489: }
3490: }
3491: }
3492: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3493: if (ref($mimetype)) {
3494: if ($$mimetype eq '') {
3495: my $mm = new File::MMagic;
3496: my $type = $mm->checktype_filename($filepath.'/'.$file);
3497: $$mimetype = $type;
3498: }
3499: }
3500: }
3501: if ($parser eq 'parse') {
3502: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3503: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3504: $allfiles,$codebase);
3505: unless ($parse_result eq 'ok') {
3506: &logthis('Failed to parse '.$filepath.$file.
3507: ' for embedded media: '.$parse_result);
3508: }
3509: }
3510: }
3511: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3512: my $input = $filepath.'/'.$file;
3513: my $output = $filepath.'/'.'tn-'.$file;
3514: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3515: system("convert -sample $thumbsize $input $output");
3516: if (-e $filepath.'/'.'tn-'.$file) {
3517: $fetchthumb = 1;
3518: }
3519: }
3520:
3521: # Notify homeserver to grep it
3522: #
3523: my $docuhome=&homeserver($docuname,$docudom);
3524: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3525: if ($fetchresult eq 'ok') {
3526: if ($fetchthumb) {
3527: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3528: if ($thumbresult ne 'ok') {
3529: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3530: $docuhome.': '.$thumbresult);
3531: }
3532: }
3533: #
3534: # Return the URL to it
3535: return '/uploaded/'.$path.$file;
3536: } else {
3537: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3538: ': '.$fetchresult);
3539: return '/adm/notfound.html';
3540: }
3541: }
3542:
3543: sub extract_embedded_items {
3544: my ($fullpath,$allfiles,$codebase,$content) = @_;
3545: my @state = ();
3546: my (%lastids,%related,%shockwave,%flashvars);
3547: my %javafiles = (
3548: codebase => '',
3549: code => '',
3550: archive => ''
3551: );
3552: my %mediafiles = (
3553: src => '',
3554: movie => '',
3555: );
3556: my $p;
3557: if ($content) {
3558: $p = HTML::LCParser->new($content);
3559: } else {
3560: $p = HTML::LCParser->new($fullpath);
3561: }
3562: while (my $t=$p->get_token()) {
3563: if ($t->[0] eq 'S') {
3564: my ($tagname, $attr) = ($t->[1],$t->[2]);
3565: push(@state, $tagname);
3566: if (lc($tagname) eq 'allow') {
3567: &add_filetype($allfiles,$attr->{'src'},'src');
3568: }
3569: if (lc($tagname) eq 'img') {
3570: &add_filetype($allfiles,$attr->{'src'},'src');
3571: }
3572: if (lc($tagname) eq 'a') {
3573: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3574: &add_filetype($allfiles,$attr->{'href'},'href');
3575: }
3576: }
3577: if (lc($tagname) eq 'script') {
3578: my $src;
3579: if ($attr->{'archive'} =~ /\.jar$/i) {
3580: &add_filetype($allfiles,$attr->{'archive'},'archive');
3581: } else {
3582: if ($attr->{'src'} ne '') {
3583: $src = $attr->{'src'};
3584: &add_filetype($allfiles,$src,'src');
3585: }
3586: }
3587: my $text = $p->get_trimmed_text();
3588: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3589: my @swfargs = split(/,/,$1);
3590: foreach my $item (@swfargs) {
3591: $item =~ s/["']//g;
3592: $item =~ s/^\s+//;
3593: $item =~ s/\s+$//;
3594: }
3595: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3596: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3597: push(@{$related{$swfargs[0]}},$swfargs[2]);
3598: } else {
3599: $related{$swfargs[0]} = [$swfargs[2]];
3600: }
3601: }
3602: }
3603: }
3604: if (lc($tagname) eq 'link') {
3605: if (lc($attr->{'rel'}) eq 'stylesheet') {
3606: &add_filetype($allfiles,$attr->{'href'},'href');
3607: }
3608: }
3609: if (lc($tagname) eq 'object' ||
3610: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3611: foreach my $item (keys(%javafiles)) {
3612: $javafiles{$item} = '';
3613: }
3614: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3615: $lastids{lc($tagname)} = $attr->{'id'};
3616: }
3617: }
3618: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3619: my $name = lc($attr->{'name'});
3620: foreach my $item (keys(%javafiles)) {
3621: if ($name eq $item) {
3622: $javafiles{$item} = $attr->{'value'};
3623: last;
3624: }
3625: }
3626: my $pathfrom;
3627: foreach my $item (keys(%mediafiles)) {
3628: if ($name eq $item) {
3629: $pathfrom = $attr->{'value'};
3630: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3631: &add_filetype($allfiles,$pathfrom,$name);
3632: last;
3633: }
3634: }
3635: if ($name eq 'flashvars') {
3636: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3637: }
3638: if ($pathfrom ne '') {
3639: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3640: $pathfrom);
3641: }
3642: }
3643: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3644: foreach my $item (keys(%javafiles)) {
3645: if ($attr->{$item}) {
3646: $javafiles{$item} = $attr->{$item};
3647: last;
3648: }
3649: }
3650: foreach my $item (keys(%mediafiles)) {
3651: if ($attr->{$item}) {
3652: &add_filetype($allfiles,$attr->{$item},$item);
3653: last;
3654: }
3655: }
3656: if (lc($tagname) eq 'embed') {
3657: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3658: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3659: $attr->{'src'});
3660: }
3661: }
3662: }
3663: if (lc($tagname) eq 'iframe') {
3664: my $src = $attr->{'src'} ;
3665: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3666: &add_filetype($allfiles,$src,'src');
3667: } elsif ($src =~ m{^/}) {
3668: if ($env{'request.course.id'}) {
3669: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3670: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3671: my $url = &hreflocation('',$fullpath);
3672: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3673: my $relpath = $1;
3674: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3675: &add_filetype($allfiles,$1,'src');
3676: }
3677: }
3678: }
3679: }
3680: }
3681: if ($t->[4] =~ m{/>$}) {
3682: pop(@state);
3683: }
3684: } elsif ($t->[0] eq 'E') {
3685: my ($tagname) = ($t->[1]);
3686: if ($javafiles{'codebase'} ne '') {
3687: $javafiles{'codebase'} .= '/';
3688: }
3689: if (lc($tagname) eq 'applet' ||
3690: lc($tagname) eq 'object' ||
3691: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3692: ) {
3693: foreach my $item (keys(%javafiles)) {
3694: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3695: my $file=$javafiles{'codebase'}.$javafiles{$item};
3696: &add_filetype($allfiles,$file,$item);
3697: }
3698: }
3699: }
3700: pop @state;
3701: }
3702: }
3703: foreach my $id (sort(keys(%flashvars))) {
3704: if ($shockwave{$id} ne '') {
3705: my @pairs = split(/\&/,$flashvars{$id});
3706: foreach my $pair (@pairs) {
3707: my ($key,$value) = split(/\=/,$pair);
3708: if ($key eq 'thumb') {
3709: &add_filetype($allfiles,$value,$key);
3710: } elsif ($key eq 'content') {
3711: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3712: my ($ext) = ($value =~ /\.([^.]+)$/);
3713: if ($ext ne '') {
3714: &add_filetype($allfiles,$path.$value,$ext);
3715: }
3716: }
3717: }
3718: }
3719: }
3720: return 'ok';
3721: }
3722:
3723: sub add_filetype {
3724: my ($allfiles,$file,$type)=@_;
3725: if (exists($allfiles->{$file})) {
3726: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3727: push(@{$allfiles->{$file}}, &escape($type));
3728: }
3729: } else {
3730: @{$allfiles->{$file}} = (&escape($type));
3731: }
3732: }
3733:
3734: sub embedded_dependency {
3735: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3736: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3737: if (($identifier ne '') &&
3738: (ref($related->{$identifier}) eq 'ARRAY') &&
3739: ($pathfrom ne '')) {
3740: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3741: foreach my $dep (@{$related->{$identifier}}) {
3742: &add_filetype($allfiles,$path.$dep,'object');
3743: }
3744: }
3745: }
3746: return;
3747: }
3748:
3749: sub removeuploadedurl {
3750: my ($url)=@_;
3751: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3752: return &removeuserfile($uname,$udom,$fname);
3753: }
3754:
3755: sub removeuserfile {
3756: my ($docuname,$docudom,$fname)=@_;
3757: my $home=&homeserver($docuname,$docudom);
3758: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3759: if ($result eq 'ok') {
3760: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3761: my $metafile = $fname.'.meta';
3762: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3763: my $url = "/uploaded/$docudom/$docuname/$fname";
3764: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3765: my $sqlresult =
3766: &update_portfolio_table($docuname,$docudom,$file,
3767: 'portfolio_metadata',$group,
3768: 'delete');
3769: }
3770: }
3771: return $result;
3772: }
3773:
3774: sub mkdiruserfile {
3775: my ($docuname,$docudom,$dir)=@_;
3776: my $home=&homeserver($docuname,$docudom);
3777: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3778: }
3779:
3780: sub renameuserfile {
3781: my ($docuname,$docudom,$old,$new)=@_;
3782: my $home=&homeserver($docuname,$docudom);
3783: my $result = &reply("renameuserfile:$docudom:$docuname:".
3784: &escape("$old").':'.&escape("$new"),$home);
3785: if ($result eq 'ok') {
3786: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3787: my $oldmeta = $old.'.meta';
3788: my $newmeta = $new.'.meta';
3789: my $metaresult =
3790: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3791: my $url = "/uploaded/$docudom/$docuname/$old";
3792: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3793: my $sqlresult =
3794: &update_portfolio_table($docuname,$docudom,$file,
3795: 'portfolio_metadata',$group,
3796: 'delete');
3797: }
3798: }
3799: return $result;
3800: }
3801:
3802: # ------------------------------------------------------------------------- Log
3803:
3804: sub log {
3805: my ($dom,$nam,$hom,$what)=@_;
3806: return critical("log:$dom:$nam:$what",$hom);
3807: }
3808:
3809: # ------------------------------------------------------------------ Course Log
3810: #
3811: # This routine flushes several buffers of non-mission-critical nature
3812: #
3813:
3814: sub flushcourselogs {
3815: &logthis('Flushing log buffers');
3816: #
3817: # course logs
3818: # This is a log of all transactions in a course, which can be used
3819: # for data mining purposes
3820: #
3821: # It also collects the courseid database, which lists last transaction
3822: # times and course titles for all courseids
3823: #
3824: my %courseidbuffer=();
3825: foreach my $crsid (keys(%courselogs)) {
3826: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3827: &escape($courselogs{$crsid}),
3828: $coursehombuf{$crsid}) eq 'ok') {
3829: delete $courselogs{$crsid};
3830: } else {
3831: &logthis('Failed to flush log buffer for '.$crsid);
3832: if (length($courselogs{$crsid})>40000) {
3833: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3834: " exceeded maximum size, deleting.</font>");
3835: delete $courselogs{$crsid};
3836: }
3837: }
3838: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3839: 'description' => $coursedescrbuf{$crsid},
3840: 'inst_code' => $courseinstcodebuf{$crsid},
3841: 'type' => $coursetypebuf{$crsid},
3842: 'owner' => $courseownerbuf{$crsid},
3843: };
3844: }
3845: #
3846: # Write course id database (reverse lookup) to homeserver of courses
3847: # Is used in pickcourse
3848: #
3849: foreach my $crs_home (keys(%courseidbuffer)) {
3850: my $response = &courseidput(&host_domain($crs_home),
3851: $courseidbuffer{$crs_home},
3852: $crs_home,'timeonly');
3853: }
3854: #
3855: # File accesses
3856: # Writes to the dynamic metadata of resources to get hit counts, etc.
3857: #
3858: foreach my $entry (keys(%accesshash)) {
3859: if ($entry =~ /___count$/) {
3860: my ($dom,$name);
3861: ($dom,$name,undef)=
3862: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3863: if (! defined($dom) || $dom eq '' ||
3864: ! defined($name) || $name eq '') {
3865: my $cid = $env{'request.course.id'};
3866: $dom = $env{'request.'.$cid.'.domain'};
3867: $name = $env{'request.'.$cid.'.num'};
3868: }
3869: my $value = $accesshash{$entry};
3870: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3871: my %temphash=($url => $value);
3872: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3873: if ($result eq 'ok') {
3874: delete $accesshash{$entry};
3875: }
3876: } else {
3877: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3878: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3879: my %temphash=($entry => $accesshash{$entry});
3880: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3881: delete $accesshash{$entry};
3882: }
3883: }
3884: }
3885: #
3886: # Roles
3887: # Reverse lookup of user roles for course faculty/staff and co-authorship
3888: #
3889: foreach my $entry (keys(%userrolehash)) {
3890: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3891: split(/\:/,$entry);
3892: if (&Apache::lonnet::put('nohist_userroles',
3893: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3894: $rudom,$runame) eq 'ok') {
3895: delete $userrolehash{$entry};
3896: }
3897: }
3898: #
3899: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3900: #
3901: my %domrolebuffer = ();
3902: foreach my $entry (keys(%domainrolehash)) {
3903: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3904: if ($domrolebuffer{$rudom}) {
3905: $domrolebuffer{$rudom}.='&'.&escape($entry).
3906: '='.&escape($domainrolehash{$entry});
3907: } else {
3908: $domrolebuffer{$rudom}.=&escape($entry).
3909: '='.&escape($domainrolehash{$entry});
3910: }
3911: delete $domainrolehash{$entry};
3912: }
3913: foreach my $dom (keys(%domrolebuffer)) {
3914: my %servers = &get_servers($dom,'library');
3915: foreach my $tryserver (keys(%servers)) {
3916: unless (&reply('domroleput:'.$dom.':'.
3917: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3918: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3919: }
3920: }
3921: }
3922: $dumpcount++;
3923: }
3924:
3925: sub courselog {
3926: my $what=shift;
3927: $what=time.':'.$what;
3928: unless ($env{'request.course.id'}) { return ''; }
3929: $coursedombuf{$env{'request.course.id'}}=
3930: $env{'course.'.$env{'request.course.id'}.'.domain'};
3931: $coursenumbuf{$env{'request.course.id'}}=
3932: $env{'course.'.$env{'request.course.id'}.'.num'};
3933: $coursehombuf{$env{'request.course.id'}}=
3934: $env{'course.'.$env{'request.course.id'}.'.home'};
3935: $coursedescrbuf{$env{'request.course.id'}}=
3936: $env{'course.'.$env{'request.course.id'}.'.description'};
3937: $courseinstcodebuf{$env{'request.course.id'}}=
3938: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3939: $courseownerbuf{$env{'request.course.id'}}=
3940: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3941: $coursetypebuf{$env{'request.course.id'}}=
3942: $env{'course.'.$env{'request.course.id'}.'.type'};
3943: if (defined $courselogs{$env{'request.course.id'}}) {
3944: $courselogs{$env{'request.course.id'}}.='&'.$what;
3945: } else {
3946: $courselogs{$env{'request.course.id'}}.=$what;
3947: }
3948: if (length($courselogs{$env{'request.course.id'}})>4048) {
3949: &flushcourselogs();
3950: }
3951: }
3952:
3953: sub courseacclog {
3954: my $fnsymb=shift;
3955: unless ($env{'request.course.id'}) { return ''; }
3956: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3957: if ($fnsymb=~/$LONCAPA::assess_re/) {
3958: $what.=':POST';
3959: # FIXME: Probably ought to escape things....
3960: foreach my $key (keys(%env)) {
3961: if ($key=~/^form\.(.*)/) {
3962: my $formitem = $1;
3963: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3964: $what.=':'.$formitem.'='.$env{$key};
3965: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3966: $what.=':'.$formitem.'='.$env{$key};
3967: }
3968: }
3969: }
3970: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3971: # FIXME: We should not be depending on a form parameter that someone
3972: # editing lonsearchcat.pm might change in the future.
3973: if ($env{'form.phase'} eq 'course_search') {
3974: $what.= ':POST';
3975: # FIXME: Probably ought to escape things....
3976: foreach my $element ('courseexp','crsfulltext','crsrelated',
3977: 'crsdiscuss') {
3978: $what.=':'.$element.'='.$env{'form.'.$element};
3979: }
3980: }
3981: }
3982: &courselog($what);
3983: }
3984:
3985: sub countacc {
3986: my $url=&declutter(shift);
3987: return if (! defined($url) || $url eq '');
3988: unless ($env{'request.course.id'}) { return ''; }
3989: #
3990: # Mark that this url was used in this course
3991: #
3992: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3993: #
3994: # Increase the access count for this resource in this child process
3995: #
3996: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3997: $accesshash{$key}++;
3998: }
3999:
4000: sub linklog {
4001: my ($from,$to)=@_;
4002: $from=&declutter($from);
4003: $to=&declutter($to);
4004: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4005: $accesshash{$to.'___'.$from.'___goto'}=1;
4006: }
4007:
4008: sub statslog {
4009: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4010: if ($users<2) { return; }
4011: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4012: 'course' => $env{'request.course.id'},
4013: 'sections' => '"all"',
4014: 'num_students' => $users,
4015: 'part' => $part,
4016: 'symb' => $symb,
4017: 'mean_tries' => $av_attempts,
4018: 'deg_of_diff' => $degdiff});
4019: foreach my $key (keys(%dynstore)) {
4020: $accesshash{$key}=$dynstore{$key};
4021: }
4022: }
4023:
4024: sub userrolelog {
4025: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4026: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4027: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4028: $userrolehash
4029: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4030: =$tend.':'.$tstart;
4031: }
4032: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4033: $userrolehash
4034: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4035: =$tend.':'.$tstart;
4036: }
4037: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
4038: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4039: $domainrolehash
4040: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4041: = $tend.':'.$tstart;
4042: }
4043: }
4044:
4045: sub courserolelog {
4046: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4047: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4048: my $cdom = $1;
4049: my $cnum = $2;
4050: my $sec = $3;
4051: my $namespace = 'rolelog';
4052: my %storehash = (
4053: role => $trole,
4054: start => $tstart,
4055: end => $tend,
4056: selfenroll => $selfenroll,
4057: context => $context,
4058: );
4059: if ($trole eq 'gr') {
4060: $namespace = 'groupslog';
4061: $storehash{'group'} = $sec;
4062: } else {
4063: $storehash{'section'} = $sec;
4064: }
4065: &write_log('course',$namespace,\%storehash,$delflag,$username,
4066: $domain,$cnum,$cdom);
4067: if (($trole ne 'st') || ($sec ne '')) {
4068: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4069: }
4070: }
4071: return;
4072: }
4073:
4074: sub domainrolelog {
4075: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4076: if ($area =~ m{^/($match_domain)/$}) {
4077: my $cdom = $1;
4078: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4079: my $namespace = 'rolelog';
4080: my %storehash = (
4081: role => $trole,
4082: start => $tstart,
4083: end => $tend,
4084: context => $context,
4085: );
4086: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4087: $domain,$domconfiguser,$cdom);
4088: }
4089: return;
4090:
4091: }
4092:
4093: sub coauthorrolelog {
4094: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4095: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4096: my $audom = $1;
4097: my $auname = $2;
4098: my $namespace = 'rolelog';
4099: my %storehash = (
4100: role => $trole,
4101: start => $tstart,
4102: end => $tend,
4103: context => $context,
4104: );
4105: &write_log('author',$namespace,\%storehash,$delflag,$username,
4106: $domain,$auname,$audom);
4107: }
4108: return;
4109: }
4110:
4111: sub get_course_adv_roles {
4112: my ($cid,$codes) = @_;
4113: $cid=$env{'request.course.id'} unless (defined($cid));
4114: my %coursehash=&coursedescription($cid);
4115: my $crstype = &Apache::loncommon::course_type($cid);
4116: my %nothide=();
4117: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4118: if ($user !~ /:/) {
4119: $nothide{join(':',split(/[\@]/,$user))}=1;
4120: } else {
4121: $nothide{$user}=1;
4122: }
4123: }
4124: my @possdoms = ($coursehash{'domain'});
4125: if ($coursehash{'checkforpriv'}) {
4126: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4127: }
4128: my %returnhash=();
4129: my %dumphash=
4130: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4131: my $now=time;
4132: my %privileged;
4133: foreach my $entry (keys(%dumphash)) {
4134: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4135: if (($tstart) && ($tstart<0)) { next; }
4136: if (($tend) && ($tend<$now)) { next; }
4137: if (($tstart) && ($now<$tstart)) { next; }
4138: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4139: if ($username eq '' || $domain eq '') { next; }
4140: if ((&privileged($username,$domain,\@possdoms)) &&
4141: (!$nothide{$username.':'.$domain})) { next; }
4142: if ($role eq 'cr') { next; }
4143: if ($codes) {
4144: if ($section) { $role .= ':'.$section; }
4145: if ($returnhash{$role}) {
4146: $returnhash{$role}.=','.$username.':'.$domain;
4147: } else {
4148: $returnhash{$role}=$username.':'.$domain;
4149: }
4150: } else {
4151: my $key=&plaintext($role,$crstype);
4152: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4153: if ($returnhash{$key}) {
4154: $returnhash{$key}.=','.$username.':'.$domain;
4155: } else {
4156: $returnhash{$key}=$username.':'.$domain;
4157: }
4158: }
4159: }
4160: return %returnhash;
4161: }
4162:
4163: sub get_my_roles {
4164: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4165: unless (defined($uname)) { $uname=$env{'user.name'}; }
4166: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4167: my (%dumphash,%nothide);
4168: if ($context eq 'userroles') {
4169: %dumphash = &dump('roles',$udom,$uname);
4170: } else {
4171: %dumphash = &dump('nohist_userroles',$udom,$uname);
4172: if ($hidepriv) {
4173: my %coursehash=&coursedescription($udom.'_'.$uname);
4174: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4175: if ($user !~ /:/) {
4176: $nothide{join(':',split(/[\@]/,$user))} = 1;
4177: } else {
4178: $nothide{$user} = 1;
4179: }
4180: }
4181: }
4182: }
4183: my %returnhash=();
4184: my $now=time;
4185: my %privileged;
4186: foreach my $entry (keys(%dumphash)) {
4187: my ($role,$tend,$tstart);
4188: if ($context eq 'userroles') {
4189: next if ($entry =~ /^rolesdef/);
4190: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4191: } else {
4192: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4193: }
4194: if (($tstart) && ($tstart<0)) { next; }
4195: my $status = 'active';
4196: if (($tend) && ($tend<=$now)) {
4197: $status = 'previous';
4198: }
4199: if (($tstart) && ($now<$tstart)) {
4200: $status = 'future';
4201: }
4202: if (ref($types) eq 'ARRAY') {
4203: if (!grep(/^\Q$status\E$/,@{$types})) {
4204: next;
4205: }
4206: } else {
4207: if ($status ne 'active') {
4208: next;
4209: }
4210: }
4211: my ($rolecode,$username,$domain,$section,$area);
4212: if ($context eq 'userroles') {
4213: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4214: (undef,$domain,$username,$section) = split(/\//,$area);
4215: } else {
4216: ($role,$username,$domain,$section) = split(/\:/,$entry);
4217: }
4218: if (ref($roledoms) eq 'ARRAY') {
4219: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4220: next;
4221: }
4222: }
4223: if (ref($roles) eq 'ARRAY') {
4224: if (!grep(/^\Q$role\E$/,@{$roles})) {
4225: if ($role =~ /^cr\//) {
4226: if (!grep(/^cr$/,@{$roles})) {
4227: next;
4228: }
4229: } elsif ($role =~ /^gr\//) {
4230: if (!grep(/^gr$/,@{$roles})) {
4231: next;
4232: }
4233: } else {
4234: next;
4235: }
4236: }
4237: }
4238: if ($hidepriv) {
4239: my @privroles = ('dc','su');
4240: if ($context eq 'userroles') {
4241: next if (grep(/^\Q$role\E$/,@privroles));
4242: } else {
4243: my $possdoms = [$domain];
4244: if (ref($roledoms) eq 'ARRAY') {
4245: push(@{$possdoms},@{$roledoms});
4246: }
4247: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4248: if (!$nothide{$username.':'.$domain}) {
4249: next;
4250: }
4251: }
4252: }
4253: }
4254: if ($withsec) {
4255: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4256: $tstart.':'.$tend;
4257: } else {
4258: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4259: }
4260: }
4261: return %returnhash;
4262: }
4263:
4264: # ----------------------------------------------------- Frontpage Announcements
4265: #
4266: #
4267:
4268: sub postannounce {
4269: my ($server,$text)=@_;
4270: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4271: unless ($text=~/\w/) { $text=''; }
4272: return &reply('setannounce:'.&escape($text),$server);
4273: }
4274:
4275: sub getannounce {
4276:
4277: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4278: my $announcement='';
4279: while (my $line = <$fh>) { $announcement .= $line; }
4280: close($fh);
4281: if ($announcement=~/\w/) {
4282: return
4283: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4284: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4285: } else {
4286: return '';
4287: }
4288: } else {
4289: return '';
4290: }
4291: }
4292:
4293: # ---------------------------------------------------------- Course ID routines
4294: # Deal with domain's nohist_courseid.db files
4295: #
4296:
4297: sub courseidput {
4298: my ($domain,$storehash,$coursehome,$caller) = @_;
4299: return unless (ref($storehash) eq 'HASH');
4300: my $outcome;
4301: if ($caller eq 'timeonly') {
4302: my $cids = '';
4303: foreach my $item (keys(%$storehash)) {
4304: $cids.=&escape($item).'&';
4305: }
4306: $cids=~s/\&$//;
4307: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4308: $coursehome);
4309: } else {
4310: my $items = '';
4311: foreach my $item (keys(%$storehash)) {
4312: $items.= &escape($item).'='.
4313: &freeze_escape($$storehash{$item}).'&';
4314: }
4315: $items=~s/\&$//;
4316: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4317: $coursehome);
4318: }
4319: if ($outcome eq 'unknown_cmd') {
4320: my $what;
4321: foreach my $cid (keys(%$storehash)) {
4322: $what .= &escape($cid).'=';
4323: foreach my $item ('description','inst_code','owner','type') {
4324: $what .= &escape($storehash->{$cid}{$item}).':';
4325: }
4326: $what =~ s/\:$/&/;
4327: }
4328: $what =~ s/\&$//;
4329: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4330: } else {
4331: return $outcome;
4332: }
4333: }
4334:
4335: sub courseiddump {
4336: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4337: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4338: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4339: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4340: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
4341: my $as_hash = 1;
4342: my %returnhash;
4343: if (!$domfilter) { $domfilter=''; }
4344: my %libserv = &all_library();
4345: foreach my $tryserver (keys(%libserv)) {
4346: if ( ( $hostidflag == 1
4347: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4348: || (!defined($hostidflag)) ) {
4349:
4350: if (($domfilter eq '') ||
4351: (&host_domain($tryserver) eq $domfilter)) {
4352: my $rep;
4353: if (grep { $_ eq $tryserver } current_machine_ids()) {
4354: $rep = LONCAPA::Lond::dump_course_id_handler(
4355: join(":", (&host_domain($tryserver), $sincefilter,
4356: &escape($descfilter), &escape($instcodefilter),
4357: &escape($ownerfilter), &escape($coursefilter),
4358: &escape($typefilter), &escape($regexp_ok),
4359: $as_hash, &escape($selfenrollonly),
4360: &escape($catfilter), $showhidden, $caller,
4361: &escape($cloner), &escape($cc_clone), $cloneonly,
4362: &escape($createdbefore), &escape($createdafter),
4363: &escape($creationcontext),$domcloner,$hasuniquecode,
4364: $reqcrsdom,&escape($reqinstcode))));
4365: } else {
4366: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4367: $sincefilter.':'.&escape($descfilter).':'.
4368: &escape($instcodefilter).':'.&escape($ownerfilter).
4369: ':'.&escape($coursefilter).':'.&escape($typefilter).
4370: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4371: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4372: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4373: &escape($cc_clone).':'.$cloneonly.':'.
4374: &escape($createdbefore).':'.&escape($createdafter).':'.
4375: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
4376: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
4377: }
4378:
4379: my @pairs=split(/\&/,$rep);
4380: foreach my $item (@pairs) {
4381: my ($key,$value)=split(/\=/,$item,2);
4382: $key = &unescape($key);
4383: next if ($key =~ /^error: 2 /);
4384: my $result = &thaw_unescape($value);
4385: if (ref($result) eq 'HASH') {
4386: $returnhash{$key}=$result;
4387: } else {
4388: my @responses = split(/:/,$value);
4389: my @items = ('description','inst_code','owner','type');
4390: for (my $i=0; $i<@responses; $i++) {
4391: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4392: }
4393: }
4394: }
4395: }
4396: }
4397: }
4398: return %returnhash;
4399: }
4400:
4401: sub courselastaccess {
4402: my ($cdom,$cnum,$hostidref) = @_;
4403: my %returnhash;
4404: if ($cdom && $cnum) {
4405: my $chome = &homeserver($cnum,$cdom);
4406: if ($chome ne 'no_host') {
4407: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4408: &extract_lastaccess(\%returnhash,$rep);
4409: }
4410: } else {
4411: if (!$cdom) { $cdom=''; }
4412: my %libserv = &all_library();
4413: foreach my $tryserver (keys(%libserv)) {
4414: if (ref($hostidref) eq 'ARRAY') {
4415: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4416: }
4417: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4418: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4419: &extract_lastaccess(\%returnhash,$rep);
4420: }
4421: }
4422: }
4423: return %returnhash;
4424: }
4425:
4426: sub extract_lastaccess {
4427: my ($returnhash,$rep) = @_;
4428: if (ref($returnhash) eq 'HASH') {
4429: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4430: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4431: $rep eq '') {
4432: my @pairs=split(/\&/,$rep);
4433: foreach my $item (@pairs) {
4434: my ($key,$value)=split(/\=/,$item,2);
4435: $key = &unescape($key);
4436: next if ($key =~ /^error: 2 /);
4437: $returnhash->{$key} = &thaw_unescape($value);
4438: }
4439: }
4440: }
4441: return;
4442: }
4443:
4444: # ---------------------------------------------------------- DC e-mail
4445:
4446: sub dcmailput {
4447: my ($domain,$msgid,$message,$server)=@_;
4448: my $status = &Apache::lonnet::critical(
4449: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4450: &escape($message),$server);
4451: return $status;
4452: }
4453:
4454: sub dcmaildump {
4455: my ($dom,$startdate,$enddate,$senders) = @_;
4456: my %returnhash=();
4457:
4458: if (defined(&domain($dom,'primary'))) {
4459: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4460: &escape($enddate).':';
4461: my @esc_senders=map { &escape($_)} @$senders;
4462: $cmd.=&escape(join('&',@esc_senders));
4463: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4464: my ($key,$value) = split(/\=/,$line,2);
4465: if (($key) && ($value)) {
4466: $returnhash{&unescape($key)} = &unescape($value);
4467: }
4468: }
4469: }
4470: return %returnhash;
4471: }
4472: # ---------------------------------------------------------- Domain roles
4473:
4474: sub get_domain_roles {
4475: my ($dom,$roles,$startdate,$enddate)=@_;
4476: if ((!defined($startdate)) || ($startdate eq '')) {
4477: $startdate = '.';
4478: }
4479: if ((!defined($enddate)) || ($enddate eq '')) {
4480: $enddate = '.';
4481: }
4482: my $rolelist;
4483: if (ref($roles) eq 'ARRAY') {
4484: $rolelist = join('&',@{$roles});
4485: }
4486: my %personnel = ();
4487:
4488: my %servers = &get_servers($dom,'library');
4489: foreach my $tryserver (keys(%servers)) {
4490: %{$personnel{$tryserver}}=();
4491: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4492: &escape($startdate).':'.
4493: &escape($enddate).':'.
4494: &escape($rolelist), $tryserver))) {
4495: my ($key,$value) = split(/\=/,$line,2);
4496: if (($key) && ($value)) {
4497: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4498: }
4499: }
4500: }
4501: return %personnel;
4502: }
4503:
4504: # ----------------------------------------------------------- Interval timing
4505:
4506: {
4507: # Caches needed for speedup of navmaps
4508: # We don't want to cache this for very long at all (5 seconds at most)
4509: #
4510: # The user for whom we cache
4511: my $cachedkey='';
4512: # The cached times for this user
4513: my %cachedtimes=();
4514: # When this was last done
4515: my $cachedtime='';
4516:
4517: sub load_all_first_access {
4518: my ($uname,$udom)=@_;
4519: if (($cachedkey eq $uname.':'.$udom) &&
4520: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4521: return;
4522: }
4523: $cachedtime=time;
4524: $cachedkey=$uname.':'.$udom;
4525: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4526: }
4527:
4528: sub get_first_access {
4529: my ($type,$argsymb,$argmap)=@_;
4530: my ($symb,$courseid,$udom,$uname)=&whichuser();
4531: if ($argsymb) { $symb=$argsymb; }
4532: my ($map,$id,$res)=&decode_symb($symb);
4533: if ($argmap) { $map = $argmap; }
4534: if ($type eq 'course') {
4535: $res='course';
4536: } elsif ($type eq 'map') {
4537: $res=&symbread($map);
4538: } else {
4539: $res=$symb;
4540: }
4541: &load_all_first_access($uname,$udom);
4542: return $cachedtimes{"$courseid\0$res"};
4543: }
4544:
4545: sub set_first_access {
4546: my ($type,$interval)=@_;
4547: my ($symb,$courseid,$udom,$uname)=&whichuser();
4548: my ($map,$id,$res)=&decode_symb($symb);
4549: if ($type eq 'course') {
4550: $res='course';
4551: } elsif ($type eq 'map') {
4552: $res=&symbread($map);
4553: } else {
4554: $res=$symb;
4555: }
4556: $cachedkey='';
4557: my $firstaccess=&get_first_access($type,$symb,$map);
4558: if (!$firstaccess) {
4559: my $start = time;
4560: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4561: $udom,$uname);
4562: if ($putres eq 'ok') {
4563: &put('timerinterval',{"$courseid\0$res"=>$interval},
4564: $udom,$uname);
4565: &appenv(
4566: {
4567: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4568: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4569: }
4570: );
4571: }
4572: return $putres;
4573: }
4574: return 'already_set';
4575: }
4576: }
4577:
4578: # --------------------------------------------- Set Expire Date for Spreadsheet
4579:
4580: sub expirespread {
4581: my ($uname,$udom,$stype,$usymb)=@_;
4582: my $cid=$env{'request.course.id'};
4583: if ($cid) {
4584: my $now=time;
4585: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4586: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4587: $env{'course.'.$cid.'.num'}.
4588: ':nohist_expirationdates:'.
4589: &escape($key).'='.$now,
4590: $env{'course.'.$cid.'.home'})
4591: }
4592: return 'ok';
4593: }
4594:
4595: # ----------------------------------------------------- Devalidate Spreadsheets
4596:
4597: sub devalidate {
4598: my ($symb,$uname,$udom)=@_;
4599: my $cid=$env{'request.course.id'};
4600: if ($cid) {
4601: # delete the stored spreadsheets for
4602: # - the student level sheet of this user in course's homespace
4603: # - the assessment level sheet for this resource
4604: # for this user in user's homespace
4605: # - current conditional state info
4606: my $key=$uname.':'.$udom.':';
4607: my $status=
4608: &del('nohist_calculatedsheets',
4609: [$key.'studentcalc:'],
4610: $env{'course.'.$cid.'.domain'},
4611: $env{'course.'.$cid.'.num'})
4612: .' '.
4613: &del('nohist_calculatedsheets_'.$cid,
4614: [$key.'assesscalc:'.$symb],$udom,$uname);
4615: unless ($status eq 'ok ok') {
4616: &logthis('Could not devalidate spreadsheet '.
4617: $uname.' at '.$udom.' for '.
4618: $symb.': '.$status);
4619: }
4620: &delenv('user.state.'.$cid);
4621: }
4622: }
4623:
4624: sub get_scalar {
4625: my ($string,$end) = @_;
4626: my $value;
4627: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4628: $value = $1;
4629: } elsif ($$string =~ s/^([^&]*?)&//) {
4630: $value = $1;
4631: }
4632: return &unescape($value);
4633: }
4634:
4635: sub array2str {
4636: my (@array) = @_;
4637: my $result=&arrayref2str(\@array);
4638: $result=~s/^__ARRAY_REF__//;
4639: $result=~s/__END_ARRAY_REF__$//;
4640: return $result;
4641: }
4642:
4643: sub arrayref2str {
4644: my ($arrayref) = @_;
4645: my $result='__ARRAY_REF__';
4646: foreach my $elem (@$arrayref) {
4647: if(ref($elem) eq 'ARRAY') {
4648: $result.=&arrayref2str($elem).'&';
4649: } elsif(ref($elem) eq 'HASH') {
4650: $result.=&hashref2str($elem).'&';
4651: } elsif(ref($elem)) {
4652: #print("Got a ref of ".(ref($elem))." skipping.");
4653: } else {
4654: $result.=&escape($elem).'&';
4655: }
4656: }
4657: $result=~s/\&$//;
4658: $result .= '__END_ARRAY_REF__';
4659: return $result;
4660: }
4661:
4662: sub hash2str {
4663: my (%hash) = @_;
4664: my $result=&hashref2str(\%hash);
4665: $result=~s/^__HASH_REF__//;
4666: $result=~s/__END_HASH_REF__$//;
4667: return $result;
4668: }
4669:
4670: sub hashref2str {
4671: my ($hashref)=@_;
4672: my $result='__HASH_REF__';
4673: foreach my $key (sort(keys(%$hashref))) {
4674: if (ref($key) eq 'ARRAY') {
4675: $result.=&arrayref2str($key).'=';
4676: } elsif (ref($key) eq 'HASH') {
4677: $result.=&hashref2str($key).'=';
4678: } elsif (ref($key)) {
4679: $result.='=';
4680: #print("Got a ref of ".(ref($key))." skipping.");
4681: } else {
4682: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4683: }
4684:
4685: if(ref($hashref->{$key}) eq 'ARRAY') {
4686: $result.=&arrayref2str($hashref->{$key}).'&';
4687: } elsif(ref($hashref->{$key}) eq 'HASH') {
4688: $result.=&hashref2str($hashref->{$key}).'&';
4689: } elsif(ref($hashref->{$key})) {
4690: $result.='&';
4691: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4692: } else {
4693: $result.=&escape($hashref->{$key}).'&';
4694: }
4695: }
4696: $result=~s/\&$//;
4697: $result .= '__END_HASH_REF__';
4698: return $result;
4699: }
4700:
4701: sub str2hash {
4702: my ($string)=@_;
4703: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4704: return %$hash;
4705: }
4706:
4707: sub str2hashref {
4708: my ($string) = @_;
4709:
4710: my %hash;
4711:
4712: if($string !~ /^__HASH_REF__/) {
4713: if (! ($string eq '' || !defined($string))) {
4714: $hash{'error'}='Not hash reference';
4715: }
4716: return (\%hash, $string);
4717: }
4718:
4719: $string =~ s/^__HASH_REF__//;
4720:
4721: while($string !~ /^__END_HASH_REF__/) {
4722: #key
4723: my $key='';
4724: if($string =~ /^__HASH_REF__/) {
4725: ($key, $string)=&str2hashref($string);
4726: if(defined($key->{'error'})) {
4727: $hash{'error'}='Bad data';
4728: return (\%hash, $string);
4729: }
4730: } elsif($string =~ /^__ARRAY_REF__/) {
4731: ($key, $string)=&str2arrayref($string);
4732: if($key->[0] eq 'Array reference error') {
4733: $hash{'error'}='Bad data';
4734: return (\%hash, $string);
4735: }
4736: } else {
4737: $string =~ s/^(.*?)=//;
4738: $key=&unescape($1);
4739: }
4740: $string =~ s/^=//;
4741:
4742: #value
4743: my $value='';
4744: if($string =~ /^__HASH_REF__/) {
4745: ($value, $string)=&str2hashref($string);
4746: if(defined($value->{'error'})) {
4747: $hash{'error'}='Bad data';
4748: return (\%hash, $string);
4749: }
4750: } elsif($string =~ /^__ARRAY_REF__/) {
4751: ($value, $string)=&str2arrayref($string);
4752: if($value->[0] eq 'Array reference error') {
4753: $hash{'error'}='Bad data';
4754: return (\%hash, $string);
4755: }
4756: } else {
4757: $value=&get_scalar(\$string,'__END_HASH_REF__');
4758: }
4759: $string =~ s/^&//;
4760:
4761: $hash{$key}=$value;
4762: }
4763:
4764: $string =~ s/^__END_HASH_REF__//;
4765:
4766: return (\%hash, $string);
4767: }
4768:
4769: sub str2array {
4770: my ($string)=@_;
4771: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4772: return @$array;
4773: }
4774:
4775: sub str2arrayref {
4776: my ($string) = @_;
4777: my @array;
4778:
4779: if($string !~ /^__ARRAY_REF__/) {
4780: if (! ($string eq '' || !defined($string))) {
4781: $array[0]='Array reference error';
4782: }
4783: return (\@array, $string);
4784: }
4785:
4786: $string =~ s/^__ARRAY_REF__//;
4787:
4788: while($string !~ /^__END_ARRAY_REF__/) {
4789: my $value='';
4790: if($string =~ /^__HASH_REF__/) {
4791: ($value, $string)=&str2hashref($string);
4792: if(defined($value->{'error'})) {
4793: $array[0] ='Array reference error';
4794: return (\@array, $string);
4795: }
4796: } elsif($string =~ /^__ARRAY_REF__/) {
4797: ($value, $string)=&str2arrayref($string);
4798: if($value->[0] eq 'Array reference error') {
4799: $array[0] ='Array reference error';
4800: return (\@array, $string);
4801: }
4802: } else {
4803: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4804: }
4805: $string =~ s/^&//;
4806:
4807: push(@array, $value);
4808: }
4809:
4810: $string =~ s/^__END_ARRAY_REF__//;
4811:
4812: return (\@array, $string);
4813: }
4814:
4815: # -------------------------------------------------------------------Temp Store
4816:
4817: sub tmpreset {
4818: my ($symb,$namespace,$domain,$stuname) = @_;
4819: if (!$symb) {
4820: $symb=&symbread();
4821: if (!$symb) { $symb= $env{'request.url'}; }
4822: }
4823: $symb=escape($symb);
4824:
4825: if (!$namespace) { $namespace=$env{'request.state'}; }
4826: $namespace=~s/\//\_/g;
4827: $namespace=~s/\W//g;
4828:
4829: if (!$domain) { $domain=$env{'user.domain'}; }
4830: if (!$stuname) { $stuname=$env{'user.name'}; }
4831: if ($domain eq 'public' && $stuname eq 'public') {
4832: $stuname=$ENV{'REMOTE_ADDR'};
4833: }
4834: my $path=LONCAPA::tempdir();
4835: my %hash;
4836: if (tie(%hash,'GDBM_File',
4837: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4838: &GDBM_WRCREAT(),0640)) {
4839: foreach my $key (keys(%hash)) {
4840: if ($key=~ /:$symb/) {
4841: delete($hash{$key});
4842: }
4843: }
4844: }
4845: }
4846:
4847: sub tmpstore {
4848: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4849:
4850: if (!$symb) {
4851: $symb=&symbread();
4852: if (!$symb) { $symb= $env{'request.url'}; }
4853: }
4854: $symb=escape($symb);
4855:
4856: if (!$namespace) {
4857: # I don't think we would ever want to store this for a course.
4858: # it seems this will only be used if we don't have a course.
4859: #$namespace=$env{'request.course.id'};
4860: #if (!$namespace) {
4861: $namespace=$env{'request.state'};
4862: #}
4863: }
4864: $namespace=~s/\//\_/g;
4865: $namespace=~s/\W//g;
4866: if (!$domain) { $domain=$env{'user.domain'}; }
4867: if (!$stuname) { $stuname=$env{'user.name'}; }
4868: if ($domain eq 'public' && $stuname eq 'public') {
4869: $stuname=$ENV{'REMOTE_ADDR'};
4870: }
4871: my $now=time;
4872: my %hash;
4873: my $path=LONCAPA::tempdir();
4874: if (tie(%hash,'GDBM_File',
4875: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4876: &GDBM_WRCREAT(),0640)) {
4877: $hash{"version:$symb"}++;
4878: my $version=$hash{"version:$symb"};
4879: my $allkeys='';
4880: foreach my $key (keys(%$storehash)) {
4881: $allkeys.=$key.':';
4882: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4883: }
4884: $hash{"$version:$symb:timestamp"}=$now;
4885: $allkeys.='timestamp';
4886: $hash{"$version:keys:$symb"}=$allkeys;
4887: if (untie(%hash)) {
4888: return 'ok';
4889: } else {
4890: return "error:$!";
4891: }
4892: } else {
4893: return "error:$!";
4894: }
4895: }
4896:
4897: # -----------------------------------------------------------------Temp Restore
4898:
4899: sub tmprestore {
4900: my ($symb,$namespace,$domain,$stuname) = @_;
4901:
4902: if (!$symb) {
4903: $symb=&symbread();
4904: if (!$symb) { $symb= $env{'request.url'}; }
4905: }
4906: $symb=escape($symb);
4907:
4908: if (!$namespace) { $namespace=$env{'request.state'}; }
4909:
4910: if (!$domain) { $domain=$env{'user.domain'}; }
4911: if (!$stuname) { $stuname=$env{'user.name'}; }
4912: if ($domain eq 'public' && $stuname eq 'public') {
4913: $stuname=$ENV{'REMOTE_ADDR'};
4914: }
4915: my %returnhash;
4916: $namespace=~s/\//\_/g;
4917: $namespace=~s/\W//g;
4918: my %hash;
4919: my $path=LONCAPA::tempdir();
4920: if (tie(%hash,'GDBM_File',
4921: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4922: &GDBM_READER(),0640)) {
4923: my $version=$hash{"version:$symb"};
4924: $returnhash{'version'}=$version;
4925: my $scope;
4926: for ($scope=1;$scope<=$version;$scope++) {
4927: my $vkeys=$hash{"$scope:keys:$symb"};
4928: my @keys=split(/:/,$vkeys);
4929: my $key;
4930: $returnhash{"$scope:keys"}=$vkeys;
4931: foreach $key (@keys) {
4932: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4933: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4934: }
4935: }
4936: if (!(untie(%hash))) {
4937: return "error:$!";
4938: }
4939: } else {
4940: return "error:$!";
4941: }
4942: return %returnhash;
4943: }
4944:
4945: # ----------------------------------------------------------------------- Store
4946:
4947: sub store {
4948: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
4949: my $home='';
4950:
4951: if ($stuname) { $home=&homeserver($stuname,$domain); }
4952:
4953: $symb=&symbclean($symb);
4954: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4955:
4956: if (!$domain) { $domain=$env{'user.domain'}; }
4957: if (!$stuname) { $stuname=$env{'user.name'}; }
4958:
4959: &devalidate($symb,$stuname,$domain);
4960:
4961: $symb=escape($symb);
4962: if (!$namespace) {
4963: unless ($namespace=$env{'request.course.id'}) {
4964: return '';
4965: }
4966: }
4967: if (!$home) { $home=$env{'user.home'}; }
4968:
4969: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4970: $$storehash{'host'}=$perlvar{'lonHostID'};
4971:
4972: my $namevalue='';
4973: foreach my $key (keys(%$storehash)) {
4974: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4975: }
4976: $namevalue=~s/\&$//;
4977: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4978: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
4979: }
4980:
4981: # -------------------------------------------------------------- Critical Store
4982:
4983: sub cstore {
4984: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
4985: my $home='';
4986:
4987: if ($stuname) { $home=&homeserver($stuname,$domain); }
4988:
4989: $symb=&symbclean($symb);
4990: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4991:
4992: if (!$domain) { $domain=$env{'user.domain'}; }
4993: if (!$stuname) { $stuname=$env{'user.name'}; }
4994:
4995: &devalidate($symb,$stuname,$domain);
4996:
4997: $symb=escape($symb);
4998: if (!$namespace) {
4999: unless ($namespace=$env{'request.course.id'}) {
5000: return '';
5001: }
5002: }
5003: if (!$home) { $home=$env{'user.home'}; }
5004:
5005: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5006: $$storehash{'host'}=$perlvar{'lonHostID'};
5007:
5008: my $namevalue='';
5009: foreach my $key (keys(%$storehash)) {
5010: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5011: }
5012: $namevalue=~s/\&$//;
5013: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5014: return critical
5015: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5016: }
5017:
5018: # --------------------------------------------------------------------- Restore
5019:
5020: sub restore {
5021: my ($symb,$namespace,$domain,$stuname) = @_;
5022: my $home='';
5023:
5024: if ($stuname) { $home=&homeserver($stuname,$domain); }
5025:
5026: if (!$symb) {
5027: return if ($namespace eq 'courserequests');
5028: unless ($symb=escape(&symbread())) { return ''; }
5029: } else {
5030: unless ($namespace eq 'courserequests') {
5031: $symb=&escape(&symbclean($symb));
5032: }
5033: }
5034: if (!$namespace) {
5035: unless ($namespace=$env{'request.course.id'}) {
5036: return '';
5037: }
5038: }
5039: if (!$domain) { $domain=$env{'user.domain'}; }
5040: if (!$stuname) { $stuname=$env{'user.name'}; }
5041: if (!$home) { $home=$env{'user.home'}; }
5042: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5043:
5044: my %returnhash=();
5045: foreach my $line (split(/\&/,$answer)) {
5046: my ($name,$value)=split(/\=/,$line);
5047: $returnhash{&unescape($name)}=&thaw_unescape($value);
5048: }
5049: my $version;
5050: for ($version=1;$version<=$returnhash{'version'};$version++) {
5051: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5052: $returnhash{$item}=$returnhash{$version.':'.$item};
5053: }
5054: }
5055: return %returnhash;
5056: }
5057:
5058: # ---------------------------------------------------------- Course Description
5059: #
5060: #
5061:
5062: sub coursedescription {
5063: my ($courseid,$args)=@_;
5064: $courseid=~s/^\///;
5065: $courseid=~s/\_/\//g;
5066: my ($cdomain,$cnum)=split(/\//,$courseid);
5067: my $chome=&homeserver($cnum,$cdomain);
5068: my $normalid=$cdomain.'_'.$cnum;
5069: # need to always cache even if we get errors otherwise we keep
5070: # trying and trying and trying to get the course description.
5071: my %envhash=();
5072: my %returnhash=();
5073:
5074: my $expiretime=600;
5075: if ($env{'request.course.id'} eq $normalid) {
5076: $expiretime=120;
5077: }
5078:
5079: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5080: if (!$args->{'freshen_cache'}
5081: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5082: foreach my $key (keys(%env)) {
5083: next if ($key !~ /^\Q$prefix\E(.*)/);
5084: my ($setting) = $1;
5085: $returnhash{$setting} = $env{$key};
5086: }
5087: return %returnhash;
5088: }
5089:
5090: # get the data again
5091:
5092: if (!$args->{'one_time'}) {
5093: $envhash{'course.'.$normalid.'.last_cache'}=time;
5094: }
5095:
5096: if ($chome ne 'no_host') {
5097: %returnhash=&dump('environment',$cdomain,$cnum);
5098: if (!exists($returnhash{'con_lost'})) {
5099: my $username = $env{'user.name'}; # Defult username
5100: if(defined $args->{'user'}) {
5101: $username = $args->{'user'};
5102: }
5103: $returnhash{'home'}= $chome;
5104: $returnhash{'domain'} = $cdomain;
5105: $returnhash{'num'} = $cnum;
5106: if (!defined($returnhash{'type'})) {
5107: $returnhash{'type'} = 'Course';
5108: }
5109: while (my ($name,$value) = each %returnhash) {
5110: $envhash{'course.'.$normalid.'.'.$name}=$value;
5111: }
5112: $returnhash{'url'}=&clutter($returnhash{'url'});
5113: $returnhash{'fn'}=LONCAPA::tempdir() .
5114: $username.'_'.$cdomain.'_'.$cnum;
5115: $envhash{'course.'.$normalid.'.home'}=$chome;
5116: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5117: $envhash{'course.'.$normalid.'.num'}=$cnum;
5118: }
5119: }
5120: if (!$args->{'one_time'}) {
5121: &appenv(\%envhash);
5122: }
5123: return %returnhash;
5124: }
5125:
5126: sub update_released_required {
5127: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5128: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5129: $cid = $env{'request.course.id'};
5130: $cdom = $env{'course.'.$cid.'.domain'};
5131: $cnum = $env{'course.'.$cid.'.num'};
5132: $chome = $env{'course.'.$cid.'.home'};
5133: }
5134: if ($needsrelease) {
5135: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5136: my $needsupdate;
5137: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5138: $needsupdate = 1;
5139: } else {
5140: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5141: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5142: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5143: $needsupdate = 1;
5144: }
5145: }
5146: if ($needsupdate) {
5147: my %needshash = (
5148: 'internal.releaserequired' => $needsrelease,
5149: );
5150: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5151: if ($putresult eq 'ok') {
5152: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5153: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5154: if (ref($crsinfo{$cid}) eq 'HASH') {
5155: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5156: &courseidput($cdom,\%crsinfo,$chome,'notime');
5157: }
5158: }
5159: }
5160: }
5161: return;
5162: }
5163:
5164: # -------------------------------------------------See if a user is privileged
5165:
5166: sub privileged {
5167: my ($username,$domain,$possdomains,$possroles)=@_;
5168: my $now = time;
5169: my $roles;
5170: if (ref($possroles) eq 'ARRAY') {
5171: $roles = $possroles;
5172: } else {
5173: $roles = ['dc','su'];
5174: }
5175: if (ref($possdomains) eq 'ARRAY') {
5176: my %privileged = &privileged_by_domain($possdomains,$roles);
5177: foreach my $dom (@{$possdomains}) {
5178: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5179: (ref($privileged{$dom}) eq 'HASH')) {
5180: foreach my $role (@{$roles}) {
5181: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5182: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5183: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5184: return 1 unless (($end && $end < $now) ||
5185: ($start && $start > $now));
5186: }
5187: }
5188: }
5189: }
5190: }
5191: } else {
5192: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5193: my $now = time;
5194:
5195: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5196: my ($trole, $tend, $tstart) = split(/_/, $role);
5197: if (grep(/^\Q$trole\E$/,@{$roles})) {
5198: return 1 unless ($tend && $tend < $now)
5199: or ($tstart && $tstart > $now);
5200: }
5201: }
5202: }
5203: return 0;
5204: }
5205:
5206: sub privileged_by_domain {
5207: my ($domains,$roles) = @_;
5208: my %privileged = ();
5209: my $cachetime = 60*60*24;
5210: my $now = time;
5211: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5212: return %privileged;
5213: }
5214: foreach my $dom (@{$domains}) {
5215: next if (ref($privileged{$dom}) eq 'HASH');
5216: my $needroles;
5217: foreach my $role (@{$roles}) {
5218: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5219: if (defined($cached)) {
5220: if (ref($result) eq 'HASH') {
5221: $privileged{$dom}{$role} = $result;
5222: }
5223: } else {
5224: $needroles = 1;
5225: }
5226: }
5227: if ($needroles) {
5228: my %dompersonnel = &get_domain_roles($dom,$roles);
5229: $privileged{$dom} = {};
5230: foreach my $server (keys(%dompersonnel)) {
5231: if (ref($dompersonnel{$server}) eq 'HASH') {
5232: foreach my $item (keys(%{$dompersonnel{$server}})) {
5233: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5234: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5235: next if ($end && $end < $now);
5236: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5237: $dompersonnel{$server}{$item};
5238: }
5239: }
5240: }
5241: if (ref($privileged{$dom}) eq 'HASH') {
5242: foreach my $role (@{$roles}) {
5243: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5244: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5245: } else {
5246: my %hash = ();
5247: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5248: }
5249: }
5250: }
5251: }
5252: }
5253: return %privileged;
5254: }
5255:
5256: # -------------------------------------------------------- Get user privileges
5257:
5258: sub rolesinit {
5259: my ($domain, $username) = @_;
5260: my %userroles = ('user.login.time' => time);
5261: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5262:
5263: # firstaccess and timerinterval are related to timed maps/resources.
5264: # also, blocking can be triggered by an activating timer
5265: # it's saved in the user's %env.
5266: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5267: my %timerinterval = &dump('timerinterval', $domain, $username);
5268: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5269: %timerintchk, %timerintenv);
5270:
5271: foreach my $key (keys(%firstaccess)) {
5272: my ($cid, $rest) = split(/\0/, $key);
5273: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5274: }
5275:
5276: foreach my $key (keys(%timerinterval)) {
5277: my ($cid,$rest) = split(/\0/,$key);
5278: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5279: }
5280:
5281: my %allroles=();
5282: my %allgroups=();
5283:
5284: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5285: my $role = $rolesdump{$area};
5286: $area =~ s/\_\w\w$//;
5287:
5288: my ($trole, $tend, $tstart, $group_privs);
5289:
5290: if ($role =~ /^cr/) {
5291: # Custom role, defined by a user
5292: # e.g., user.role.cr/msu/smith/mynewrole
5293: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5294: $trole = $1;
5295: ($tend, $tstart) = split('_', $2);
5296: } else {
5297: $trole = $role;
5298: }
5299: } elsif ($role =~ m|^gr/|) {
5300: # Role of member in a group, defined within a course/community
5301: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5302: ($trole, $tend, $tstart) = split(/_/, $role);
5303: next if $tstart eq '-1';
5304: ($trole, $group_privs) = split(/\//, $trole);
5305: $group_privs = &unescape($group_privs);
5306: } else {
5307: # Just a normal role, defined in roles.tab
5308: ($trole, $tend, $tstart) = split(/_/,$role);
5309: }
5310:
5311: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5312: $username);
5313: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5314:
5315: # role expired or not available yet?
5316: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5317: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5318:
5319: next if $area eq '' or $trole eq '';
5320:
5321: my $spec = "$trole.$area";
5322: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5323:
5324: if ($trole =~ /^cr\//) {
5325: # Custom role, defined by a user
5326: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5327: } elsif ($trole eq 'gr') {
5328: # Role of a member in a group, defined within a course/community
5329: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5330: next;
5331: } else {
5332: # Normal role, defined in roles.tab
5333: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5334: }
5335:
5336: my $cid = $tdomain.'_'.$trest;
5337: unless ($firstaccchk{$cid}) {
5338: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5339: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5340: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5341: $coursetimerstarts{$cid}{$item};
5342: }
5343: }
5344: $firstaccchk{$cid} = 1;
5345: }
5346: unless ($timerintchk{$cid}) {
5347: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5348: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5349: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5350: $coursetimerintervals{$cid}{$item};
5351: }
5352: }
5353: $timerintchk{$cid} = 1;
5354: }
5355: }
5356:
5357: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5358: \%allroles, \%allgroups);
5359: $env{'user.adv'} = $userroles{'user.adv'};
5360:
5361: return (\%userroles,\%firstaccenv,\%timerintenv);
5362: }
5363:
5364: sub set_arearole {
5365: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5366: unless ($nolog) {
5367: # log the associated role with the area
5368: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5369: }
5370: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5371: }
5372:
5373: sub custom_roleprivs {
5374: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5375: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5376: my $homsvr = &homeserver($rauthor,$rdomain);
5377: if (&hostname($homsvr) ne '') {
5378: my ($rdummy,$roledef)=
5379: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5380: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5381: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5382: if (defined($syspriv)) {
5383: if ($trest =~ /^$match_community$/) {
5384: $syspriv =~ s/bre\&S//;
5385: }
5386: $$allroles{'cm./'}.=':'.$syspriv;
5387: $$allroles{$spec.'./'}.=':'.$syspriv;
5388: }
5389: if ($tdomain ne '') {
5390: if (defined($dompriv)) {
5391: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5392: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5393: }
5394: if (($trest ne '') && (defined($coursepriv))) {
5395: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5396: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5397: }
5398: }
5399: }
5400: }
5401: }
5402:
5403: sub group_roleprivs {
5404: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5405: my $access = 1;
5406: my $now = time;
5407: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5408: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5409: if ($access) {
5410: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5411: $$allgroups{$course}{$group} .=':'.$group_privs;
5412: }
5413: }
5414:
5415: sub standard_roleprivs {
5416: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5417: if (defined($pr{$trole.':s'})) {
5418: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5419: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5420: }
5421: if ($tdomain ne '') {
5422: if (defined($pr{$trole.':d'})) {
5423: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5424: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5425: }
5426: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5427: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5428: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5429: }
5430: }
5431: }
5432:
5433: sub set_userprivs {
5434: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5435: my $author=0;
5436: my $adv=0;
5437: my %grouproles = ();
5438: if (keys(%{$allgroups}) > 0) {
5439: my @groupkeys;
5440: foreach my $role (keys(%{$allroles})) {
5441: push(@groupkeys,$role);
5442: }
5443: if (ref($groups_roles) eq 'HASH') {
5444: foreach my $key (keys(%{$groups_roles})) {
5445: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5446: push(@groupkeys,$key);
5447: }
5448: }
5449: }
5450: if (@groupkeys > 0) {
5451: foreach my $role (@groupkeys) {
5452: my ($trole,$area,$sec,$extendedarea);
5453: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5454: $trole = $1;
5455: $area = $2;
5456: $sec = $3;
5457: $extendedarea = $area.$sec;
5458: if (exists($$allgroups{$area})) {
5459: foreach my $group (keys(%{$$allgroups{$area}})) {
5460: my $spec = $trole.'.'.$extendedarea;
5461: $grouproles{$spec.'.'.$area.'/'.$group} =
5462: $$allgroups{$area}{$group};
5463: }
5464: }
5465: }
5466: }
5467: }
5468: }
5469: foreach my $group (keys(%grouproles)) {
5470: $$allroles{$group} = $grouproles{$group};
5471: }
5472: foreach my $role (keys(%{$allroles})) {
5473: my %thesepriv;
5474: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5475: foreach my $item (split(/:/,$$allroles{$role})) {
5476: if ($item ne '') {
5477: my ($privilege,$restrictions)=split(/&/,$item);
5478: if ($restrictions eq '') {
5479: $thesepriv{$privilege}='F';
5480: } elsif ($thesepriv{$privilege} ne 'F') {
5481: $thesepriv{$privilege}.=$restrictions;
5482: }
5483: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5484: }
5485: }
5486: my $thesestr='';
5487: foreach my $priv (sort(keys(%thesepriv))) {
5488: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5489: }
5490: $userroles->{'user.priv.'.$role} = $thesestr;
5491: }
5492: return ($author,$adv);
5493: }
5494:
5495: sub role_status {
5496: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5497: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5498: my ($one,$two) = split(m{\./},$rolekey,2);
5499: (undef,undef,$$role) = split(/\./,$one,3);
5500: unless (!defined($$role) || $$role eq '') {
5501: $$where = '/'.$two;
5502: $$trolecode=$$role.'.'.$$where;
5503: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5504: $$tstatus='is';
5505: if ($$tstart && $$tstart>$update) {
5506: $$tstatus='future';
5507: if ($$tstart<$now) {
5508: if ($$tstart && $$tstart>$refresh) {
5509: if (($$where ne '') && ($$role ne '')) {
5510: my (%allroles,%allgroups,$group_privs,
5511: %groups_roles,@rolecodes);
5512: my %userroles = (
5513: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5514: );
5515: @rolecodes = ('cm');
5516: my $spec=$$role.'.'.$$where;
5517: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5518: if ($$role =~ /^cr\//) {
5519: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5520: push(@rolecodes,'cr');
5521: } elsif ($$role eq 'gr') {
5522: push(@rolecodes,$$role);
5523: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5524: $env{'user.name'});
5525: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5526: (undef,my $group_privs) = split(/\//,$trole);
5527: $group_privs = &unescape($group_privs);
5528: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5529: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5530: &get_groups_roles($tdomain,$trest,
5531: \%course_roles,\@rolecodes,
5532: \%groups_roles);
5533: } else {
5534: push(@rolecodes,$$role);
5535: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5536: }
5537: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5538: &appenv(\%userroles,\@rolecodes);
5539: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5540: }
5541: }
5542: $$tstatus = 'is';
5543: }
5544: }
5545: if ($$tend) {
5546: if ($$tend<$update) {
5547: $$tstatus='expired';
5548: } elsif ($$tend<$now) {
5549: $$tstatus='will_not';
5550: }
5551: }
5552: }
5553: }
5554: }
5555:
5556: sub get_groups_roles {
5557: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5558: return unless((ref($cdom_courseroles) eq 'HASH') &&
5559: (ref($rolecodes) eq 'ARRAY') &&
5560: (ref($groups_roles) eq 'HASH'));
5561: if (keys(%{$cdom_courseroles}) > 0) {
5562: my ($cnum) = ($rest =~ /^($match_courseid)/);
5563: if ($cdom ne '' && $cnum ne '') {
5564: foreach my $key (keys(%{$cdom_courseroles})) {
5565: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5566: my $crsrole = $1;
5567: my $crssec = $2;
5568: if ($crsrole =~ /^cr/) {
5569: unless (grep(/^cr$/,@{$rolecodes})) {
5570: push(@{$rolecodes},'cr');
5571: }
5572: } else {
5573: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5574: push(@{$rolecodes},$crsrole);
5575: }
5576: }
5577: my $rolekey = "$crsrole./$cdom/$cnum";
5578: if ($crssec ne '') {
5579: $rolekey .= "/$crssec";
5580: }
5581: $rolekey .= './';
5582: $groups_roles->{$rolekey} = $rolecodes;
5583: }
5584: }
5585: }
5586: }
5587: return;
5588: }
5589:
5590: sub delete_env_groupprivs {
5591: my ($where,$courseroles,$possroles) = @_;
5592: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5593: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5594: unless (ref($courseroles->{$udom}) eq 'HASH') {
5595: %{$courseroles->{$udom}} =
5596: &get_my_roles('','','userroles',['active'],
5597: $possroles,[$udom],1);
5598: }
5599: if (ref($courseroles->{$udom}) eq 'HASH') {
5600: foreach my $item (keys(%{$courseroles->{$udom}})) {
5601: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5602: my $area = '/'.$cdom.'/'.$cnum;
5603: my $privkey = "user.priv.$crsrole.$area";
5604: if ($crssec ne '') {
5605: $privkey .= '/'.$crssec;
5606: }
5607: $privkey .= ".$area/$group";
5608: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5609: }
5610: }
5611: return;
5612: }
5613:
5614: sub check_adhoc_privs {
5615: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5616: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5617: my $setprivs;
5618: if ($env{$cckey}) {
5619: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5620: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5621: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5622: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5623: $setprivs = 1;
5624: }
5625: } else {
5626: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5627: $setprivs = 1;
5628: }
5629: return $setprivs;
5630: }
5631:
5632: sub set_adhoc_privileges {
5633: # role can be cc or ca
5634: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5635: my $area = '/'.$dcdom.'/'.$pickedcourse;
5636: my $spec = $role.'.'.$area;
5637: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5638: $env{'user.name'},1);
5639: my %ccrole = ();
5640: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5641: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5642: &appenv(\%userroles,[$role,'cm']);
5643: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5644: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5645: &appenv( {'request.role' => $spec,
5646: 'request.role.domain' => $dcdom,
5647: 'request.course.sec' => ''
5648: }
5649: );
5650: my $tadv=0;
5651: if (&allowed('adv') eq 'F') { $tadv=1; }
5652: &appenv({'request.role.adv' => $tadv});
5653: }
5654: }
5655:
5656: # --------------------------------------------------------------- get interface
5657:
5658: sub get {
5659: my ($namespace,$storearr,$udomain,$uname)=@_;
5660: my $items='';
5661: foreach my $item (@$storearr) {
5662: $items.=&escape($item).'&';
5663: }
5664: $items=~s/\&$//;
5665: if (!$udomain) { $udomain=$env{'user.domain'}; }
5666: if (!$uname) { $uname=$env{'user.name'}; }
5667: my $uhome=&homeserver($uname,$udomain);
5668:
5669: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5670: my @pairs=split(/\&/,$rep);
5671: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5672: return @pairs;
5673: }
5674: my %returnhash=();
5675: my $i=0;
5676: foreach my $item (@$storearr) {
5677: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5678: $i++;
5679: }
5680: return %returnhash;
5681: }
5682:
5683: # --------------------------------------------------------------- del interface
5684:
5685: sub del {
5686: my ($namespace,$storearr,$udomain,$uname)=@_;
5687: my $items='';
5688: foreach my $item (@$storearr) {
5689: $items.=&escape($item).'&';
5690: }
5691:
5692: $items=~s/\&$//;
5693: if (!$udomain) { $udomain=$env{'user.domain'}; }
5694: if (!$uname) { $uname=$env{'user.name'}; }
5695: my $uhome=&homeserver($uname,$udomain);
5696: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5697: }
5698:
5699: # -------------------------------------------------------------- dump interface
5700:
5701: sub unserialize {
5702: my ($rep, $escapedkeys) = @_;
5703:
5704: return {} if $rep =~ /^error/;
5705:
5706: my %returnhash=();
5707: foreach my $item (split(/\&/,$rep)) {
5708: my ($key, $value) = split(/=/, $item, 2);
5709: $key = unescape($key) unless $escapedkeys;
5710: next if $key =~ /^error: 2 /;
5711: $returnhash{$key} = &thaw_unescape($value);
5712: }
5713: #return %returnhash;
5714: return \%returnhash;
5715: }
5716:
5717: # see Lond::dump_with_regexp
5718: # if $escapedkeys hash keys won't get unescaped.
5719: sub dump {
5720: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5721: if (!$udomain) { $udomain=$env{'user.domain'}; }
5722: if (!$uname) { $uname=$env{'user.name'}; }
5723: my $uhome=&homeserver($uname,$udomain);
5724:
5725: if ($regexp) {
5726: $regexp=&escape($regexp);
5727: } else {
5728: $regexp='.';
5729: }
5730: if (grep { $_ eq $uhome } current_machine_ids()) {
5731: # user is hosted on this machine
5732: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5733: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5734: return %{unserialize($reply, $escapedkeys)};
5735: }
5736: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5737: my @pairs=split(/\&/,$rep);
5738: my %returnhash=();
5739: if (!($rep =~ /^error/ )) {
5740: foreach my $item (@pairs) {
5741: my ($key,$value)=split(/=/,$item,2);
5742: $key = unescape($key) unless $escapedkeys;
5743: #$key = &unescape($key);
5744: next if ($key =~ /^error: 2 /);
5745: $returnhash{$key}=&thaw_unescape($value);
5746: }
5747: }
5748: return %returnhash;
5749: }
5750:
5751:
5752: # --------------------------------------------------------- dumpstore interface
5753:
5754: sub dumpstore {
5755: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5756: # same as dump but keys must be escaped. They may contain colon separated
5757: # lists of values that may themself contain colons (e.g. symbs).
5758: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5759: }
5760:
5761: # -------------------------------------------------------------- keys interface
5762:
5763: sub getkeys {
5764: my ($namespace,$udomain,$uname)=@_;
5765: if (!$udomain) { $udomain=$env{'user.domain'}; }
5766: if (!$uname) { $uname=$env{'user.name'}; }
5767: my $uhome=&homeserver($uname,$udomain);
5768: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5769: my @keyarray=();
5770: foreach my $key (split(/\&/,$rep)) {
5771: next if ($key =~ /^error: 2 /);
5772: push(@keyarray,&unescape($key));
5773: }
5774: return @keyarray;
5775: }
5776:
5777: # --------------------------------------------------------------- currentdump
5778: sub currentdump {
5779: my ($courseid,$sdom,$sname)=@_;
5780: $courseid = $env{'request.course.id'} if (! defined($courseid));
5781: $sdom = $env{'user.domain'} if (! defined($sdom));
5782: $sname = $env{'user.name'} if (! defined($sname));
5783: my $uhome = &homeserver($sname,$sdom);
5784: my $rep;
5785:
5786: if (grep { $_ eq $uhome } current_machine_ids()) {
5787: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5788: $courseid)));
5789: } else {
5790: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5791: }
5792:
5793: return if ($rep =~ /^(error:|no_such_host)/);
5794: #
5795: my %returnhash=();
5796: #
5797: if ($rep eq "unknown_cmd") {
5798: # an old lond will not know currentdump
5799: # Do a dump and make it look like a currentdump
5800: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5801: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5802: my %hash = @tmp;
5803: @tmp=();
5804: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5805: } else {
5806: my @pairs=split(/\&/,$rep);
5807: foreach my $pair (@pairs) {
5808: my ($key,$value)=split(/=/,$pair,2);
5809: my ($symb,$param) = split(/:/,$key);
5810: $returnhash{&unescape($symb)}->{&unescape($param)} =
5811: &thaw_unescape($value);
5812: }
5813: }
5814: return %returnhash;
5815: }
5816:
5817: sub convert_dump_to_currentdump{
5818: my %hash = %{shift()};
5819: my %returnhash;
5820: # Code ripped from lond, essentially. The only difference
5821: # here is the unescaping done by lonnet::dump(). Conceivably
5822: # we might run in to problems with parameter names =~ /^v\./
5823: while (my ($key,$value) = each(%hash)) {
5824: my ($v,$symb,$param) = split(/:/,$key);
5825: $symb = &unescape($symb);
5826: $param = &unescape($param);
5827: next if ($v eq 'version' || $symb eq 'keys');
5828: next if (exists($returnhash{$symb}) &&
5829: exists($returnhash{$symb}->{$param}) &&
5830: $returnhash{$symb}->{'v.'.$param} > $v);
5831: $returnhash{$symb}->{$param}=$value;
5832: $returnhash{$symb}->{'v.'.$param}=$v;
5833: }
5834: #
5835: # Remove all of the keys in the hashes which keep track of
5836: # the version of the parameter.
5837: while (my ($symb,$param_hash) = each(%returnhash)) {
5838: # use a foreach because we are going to delete from the hash.
5839: foreach my $key (keys(%$param_hash)) {
5840: delete($param_hash->{$key}) if ($key =~ /^v\./);
5841: }
5842: }
5843: return \%returnhash;
5844: }
5845:
5846: # ------------------------------------------------------ critical inc interface
5847:
5848: sub cinc {
5849: return &inc(@_,'critical');
5850: }
5851:
5852: # --------------------------------------------------------------- inc interface
5853:
5854: sub inc {
5855: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5856: if (!$udomain) { $udomain=$env{'user.domain'}; }
5857: if (!$uname) { $uname=$env{'user.name'}; }
5858: my $uhome=&homeserver($uname,$udomain);
5859: my $items='';
5860: if (! ref($store)) {
5861: # got a single value, so use that instead
5862: $items = &escape($store).'=&';
5863: } elsif (ref($store) eq 'SCALAR') {
5864: $items = &escape($$store).'=&';
5865: } elsif (ref($store) eq 'ARRAY') {
5866: $items = join('=&',map {&escape($_);} @{$store});
5867: } elsif (ref($store) eq 'HASH') {
5868: while (my($key,$value) = each(%{$store})) {
5869: $items.= &escape($key).'='.&escape($value).'&';
5870: }
5871: }
5872: $items=~s/\&$//;
5873: if ($critical) {
5874: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5875: } else {
5876: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5877: }
5878: }
5879:
5880: # --------------------------------------------------------------- put interface
5881:
5882: sub put {
5883: my ($namespace,$storehash,$udomain,$uname)=@_;
5884: if (!$udomain) { $udomain=$env{'user.domain'}; }
5885: if (!$uname) { $uname=$env{'user.name'}; }
5886: my $uhome=&homeserver($uname,$udomain);
5887: my $items='';
5888: foreach my $item (keys(%$storehash)) {
5889: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5890: }
5891: $items=~s/\&$//;
5892: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5893: }
5894:
5895: # ------------------------------------------------------------ newput interface
5896:
5897: sub newput {
5898: my ($namespace,$storehash,$udomain,$uname)=@_;
5899: if (!$udomain) { $udomain=$env{'user.domain'}; }
5900: if (!$uname) { $uname=$env{'user.name'}; }
5901: my $uhome=&homeserver($uname,$udomain);
5902: my $items='';
5903: foreach my $key (keys(%$storehash)) {
5904: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5905: }
5906: $items=~s/\&$//;
5907: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5908: }
5909:
5910: # --------------------------------------------------------- putstore interface
5911:
5912: sub putstore {
5913: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
5914: if (!$udomain) { $udomain=$env{'user.domain'}; }
5915: if (!$uname) { $uname=$env{'user.name'}; }
5916: my $uhome=&homeserver($uname,$udomain);
5917: my $items='';
5918: foreach my $key (keys(%$storehash)) {
5919: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5920: }
5921: $items=~s/\&$//;
5922: my $esc_symb=&escape($symb);
5923: my $esc_v=&escape($version);
5924: my $reply =
5925: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5926: $uhome);
5927: if (($tolog) && ($reply eq 'ok')) {
5928: my $namevalue='';
5929: foreach my $key (keys(%{$storehash})) {
5930: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5931: }
5932: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
5933: '&host='.&escape($perlvar{'lonHostID'}).
5934: '&version='.$esc_v.
5935: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
5936: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
5937: }
5938: if ($reply eq 'unknown_cmd') {
5939: # gfall back to way things use to be done
5940: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5941: $uname);
5942: }
5943: return $reply;
5944: }
5945:
5946: sub old_putstore {
5947: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5948: if (!$udomain) { $udomain=$env{'user.domain'}; }
5949: if (!$uname) { $uname=$env{'user.name'}; }
5950: my $uhome=&homeserver($uname,$udomain);
5951: my %newstorehash;
5952: foreach my $item (keys(%$storehash)) {
5953: my $key = $version.':'.&escape($symb).':'.$item;
5954: $newstorehash{$key} = $storehash->{$item};
5955: }
5956: my $items='';
5957: my %allitems = ();
5958: foreach my $item (keys(%newstorehash)) {
5959: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5960: my $key = $1.':keys:'.$2;
5961: $allitems{$key} .= $3.':';
5962: }
5963: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5964: }
5965: foreach my $item (keys(%allitems)) {
5966: $allitems{$item} =~ s/\:$//;
5967: $items.= $item.'='.$allitems{$item}.'&';
5968: }
5969: $items=~s/\&$//;
5970: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5971: }
5972:
5973: # ------------------------------------------------------ critical put interface
5974:
5975: sub cput {
5976: my ($namespace,$storehash,$udomain,$uname)=@_;
5977: if (!$udomain) { $udomain=$env{'user.domain'}; }
5978: if (!$uname) { $uname=$env{'user.name'}; }
5979: my $uhome=&homeserver($uname,$udomain);
5980: my $items='';
5981: foreach my $item (keys(%$storehash)) {
5982: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5983: }
5984: $items=~s/\&$//;
5985: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5986: }
5987:
5988: # -------------------------------------------------------------- eget interface
5989:
5990: sub eget {
5991: my ($namespace,$storearr,$udomain,$uname)=@_;
5992: my $items='';
5993: foreach my $item (@$storearr) {
5994: $items.=&escape($item).'&';
5995: }
5996: $items=~s/\&$//;
5997: if (!$udomain) { $udomain=$env{'user.domain'}; }
5998: if (!$uname) { $uname=$env{'user.name'}; }
5999: my $uhome=&homeserver($uname,$udomain);
6000: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6001: my @pairs=split(/\&/,$rep);
6002: my %returnhash=();
6003: my $i=0;
6004: foreach my $item (@$storearr) {
6005: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6006: $i++;
6007: }
6008: return %returnhash;
6009: }
6010:
6011: # ------------------------------------------------------------ tmpput interface
6012: sub tmpput {
6013: my ($storehash,$server,$context)=@_;
6014: my $items='';
6015: foreach my $item (keys(%$storehash)) {
6016: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6017: }
6018: $items=~s/\&$//;
6019: if (defined($context)) {
6020: $items .= ':'.&escape($context);
6021: }
6022: return &reply("tmpput:$items",$server);
6023: }
6024:
6025: # ------------------------------------------------------------ tmpget interface
6026: sub tmpget {
6027: my ($token,$server)=@_;
6028: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6029: my $rep=&reply("tmpget:$token",$server);
6030: my %returnhash;
6031: foreach my $item (split(/\&/,$rep)) {
6032: my ($key,$value)=split(/=/,$item);
6033: next if ($key =~ /^error: 2 /);
6034: $returnhash{&unescape($key)}=&thaw_unescape($value);
6035: }
6036: return %returnhash;
6037: }
6038:
6039: # ------------------------------------------------------------ tmpdel interface
6040: sub tmpdel {
6041: my ($token,$server)=@_;
6042: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6043: return &reply("tmpdel:$token",$server);
6044: }
6045:
6046: # ------------------------------------------------------------ get_timebased_id
6047:
6048: sub get_timebased_id {
6049: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6050: $maxtries) = @_;
6051: my ($newid,$error,$dellock);
6052: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6053: return ('','ok','invalid call to get suffix');
6054: }
6055:
6056: # set defaults for any optional args for which values were not supplied
6057: if ($who eq '') {
6058: $who = $env{'user.name'}.':'.$env{'user.domain'};
6059: }
6060: if (!$locktries) {
6061: $locktries = 3;
6062: }
6063: if (!$maxtries) {
6064: $maxtries = 10;
6065: }
6066:
6067: if (($cdom eq '') || ($cnum eq '')) {
6068: if ($env{'request.course.id'}) {
6069: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6070: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6071: }
6072: if (($cdom eq '') || ($cnum eq '')) {
6073: return ('','ok','call to get suffix not in course context');
6074: }
6075: }
6076:
6077: # construct locking item
6078: my $lockhash = {
6079: $prefix."\0".'locked_'.$keyid => $who,
6080: };
6081: my $tries = 0;
6082:
6083: # attempt to get lock on nohist_$namespace file
6084: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6085: while (($gotlock ne 'ok') && $tries <$locktries) {
6086: $tries ++;
6087: sleep 1;
6088: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6089: }
6090:
6091: # attempt to get unique identifier, based on current timestamp
6092: if ($gotlock eq 'ok') {
6093: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6094: my $id = time;
6095: $newid = $id;
6096: if ($idtype eq 'addcode') {
6097: $newid .= &sixnum_code();
6098: }
6099: my $idtries = 0;
6100: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6101: if ($idtype eq 'concat') {
6102: $newid = $id.$idtries;
6103: } elsif ($idtype eq 'addcode') {
6104: $newid = $newid.&sixnum_code();
6105: } else {
6106: $newid ++;
6107: }
6108: $idtries ++;
6109: }
6110: if (!exists($inuse{$prefix."\0".$newid})) {
6111: my %new_item = (
6112: $prefix."\0".$newid => $who,
6113: );
6114: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6115: $cdom,$cnum);
6116: if ($putresult ne 'ok') {
6117: undef($newid);
6118: $error = 'error saving new item: '.$putresult;
6119: }
6120: } else {
6121: undef($newid);
6122: $error = ('error: no unique suffix available for the new item ');
6123: }
6124: # remove lock
6125: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6126: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6127: } else {
6128: $error = "error: could not obtain lockfile\n";
6129: $dellock = 'ok';
6130: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6131: $dellock = 'nolock';
6132: }
6133: }
6134: return ($newid,$dellock,$error);
6135: }
6136:
6137: sub sixnum_code {
6138: my $code;
6139: for (0..6) {
6140: $code .= int( rand(9) );
6141: }
6142: return $code;
6143: }
6144:
6145: # -------------------------------------------------- portfolio access checking
6146:
6147: sub portfolio_access {
6148: my ($requrl,$clientip) = @_;
6149: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6150: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6151: if ($result) {
6152: my %setters;
6153: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6154: my ($startblock,$endblock) =
6155: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6156: if ($startblock && $endblock) {
6157: return 'B';
6158: }
6159: } else {
6160: my ($startblock,$endblock) =
6161: &Apache::loncommon::blockcheck(\%setters,'port');
6162: if ($startblock && $endblock) {
6163: return 'B';
6164: }
6165: }
6166: }
6167: if ($result eq 'ok') {
6168: return 'F';
6169: } elsif ($result =~ /^[^:]+:guest_/) {
6170: return 'A';
6171: }
6172: return '';
6173: }
6174:
6175: sub get_portfolio_access {
6176: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6177:
6178: if (!ref($access_hash)) {
6179: my $current_perms = &get_portfile_permissions($udom,$unum);
6180: my %access_controls = &get_access_controls($current_perms,$group,
6181: $file_name);
6182: $access_hash = $access_controls{$file_name};
6183: }
6184:
6185: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6186: my $now = time;
6187: if (ref($access_hash) eq 'HASH') {
6188: foreach my $key (keys(%{$access_hash})) {
6189: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6190: if ($start > $now) {
6191: next;
6192: }
6193: if ($end && $end<$now) {
6194: next;
6195: }
6196: if ($scope eq 'public') {
6197: $public = $key;
6198: last;
6199: } elsif ($scope eq 'guest') {
6200: $guest = $key;
6201: } elsif ($scope eq 'domains') {
6202: push(@domains,$key);
6203: } elsif ($scope eq 'users') {
6204: push(@users,$key);
6205: } elsif ($scope eq 'course') {
6206: push(@courses,$key);
6207: } elsif ($scope eq 'group') {
6208: push(@groups,$key);
6209: } elsif ($scope eq 'ip') {
6210: push(@ips,$key);
6211: }
6212: }
6213: if ($public) {
6214: return 'ok';
6215: } elsif (@ips > 0) {
6216: my $allowed;
6217: foreach my $ipkey (@ips) {
6218: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6219: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6220: $allowed = 1;
6221: last;
6222: }
6223: }
6224: }
6225: if ($allowed) {
6226: return 'ok';
6227: }
6228: }
6229: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6230: if ($guest) {
6231: return $guest;
6232: }
6233: } else {
6234: if (@domains > 0) {
6235: foreach my $domkey (@domains) {
6236: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6237: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6238: return 'ok';
6239: }
6240: }
6241: }
6242: }
6243: if (@users > 0) {
6244: foreach my $userkey (@users) {
6245: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6246: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6247: if (ref($item) eq 'HASH') {
6248: if (($item->{'uname'} eq $env{'user.name'}) &&
6249: ($item->{'udom'} eq $env{'user.domain'})) {
6250: return 'ok';
6251: }
6252: }
6253: }
6254: }
6255: }
6256: }
6257: my %roleshash;
6258: my @courses_and_groups = @courses;
6259: push(@courses_and_groups,@groups);
6260: if (@courses_and_groups > 0) {
6261: my (%allgroups,%allroles);
6262: my ($start,$end,$role,$sec,$group);
6263: foreach my $envkey (%env) {
6264: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6265: my $cid = $2.'_'.$3;
6266: if ($1 eq 'gr') {
6267: $group = $4;
6268: $allgroups{$cid}{$group} = $env{$envkey};
6269: } else {
6270: if ($4 eq '') {
6271: $sec = 'none';
6272: } else {
6273: $sec = $4;
6274: }
6275: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6276: }
6277: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6278: my $cid = $2.'_'.$3;
6279: if ($4 eq '') {
6280: $sec = 'none';
6281: } else {
6282: $sec = $4;
6283: }
6284: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6285: }
6286: }
6287: if (keys(%allroles) == 0) {
6288: return;
6289: }
6290: foreach my $key (@courses_and_groups) {
6291: my %content = %{$$access_hash{$key}};
6292: my $cnum = $content{'number'};
6293: my $cdom = $content{'domain'};
6294: my $cid = $cdom.'_'.$cnum;
6295: if (!exists($allroles{$cid})) {
6296: next;
6297: }
6298: foreach my $role_id (keys(%{$content{'roles'}})) {
6299: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6300: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6301: my @status = @{$content{'roles'}{$role_id}{'access'}};
6302: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6303: foreach my $role (keys(%{$allroles{$cid}})) {
6304: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6305: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6306: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6307: if (grep/^all$/,@sections) {
6308: return 'ok';
6309: } else {
6310: if (grep/^$sec$/,@sections) {
6311: return 'ok';
6312: }
6313: }
6314: }
6315: }
6316: if (keys(%{$allgroups{$cid}}) == 0) {
6317: if (grep/^none$/,@groups) {
6318: return 'ok';
6319: }
6320: } else {
6321: if (grep/^all$/,@groups) {
6322: return 'ok';
6323: }
6324: foreach my $group (keys(%{$allgroups{$cid}})) {
6325: if (grep/^$group$/,@groups) {
6326: return 'ok';
6327: }
6328: }
6329: }
6330: }
6331: }
6332: }
6333: }
6334: }
6335: if ($guest) {
6336: return $guest;
6337: }
6338: }
6339: }
6340: return;
6341: }
6342:
6343: sub course_group_datechecker {
6344: my ($dates,$now,$status) = @_;
6345: my ($start,$end) = split(/\./,$dates);
6346: if (!$start && !$end) {
6347: return 'ok';
6348: }
6349: if (grep/^active$/,@{$status}) {
6350: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6351: return 'ok';
6352: }
6353: }
6354: if (grep/^previous$/,@{$status}) {
6355: if ($end > $now ) {
6356: return 'ok';
6357: }
6358: }
6359: if (grep/^future$/,@{$status}) {
6360: if ($start > $now) {
6361: return 'ok';
6362: }
6363: }
6364: return;
6365: }
6366:
6367: sub parse_portfolio_url {
6368: my ($url) = @_;
6369:
6370: my ($type,$udom,$unum,$group,$file_name);
6371:
6372: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6373: $type = 1;
6374: $udom = $1;
6375: $unum = $2;
6376: $file_name = $3;
6377: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6378: $type = 2;
6379: $udom = $1;
6380: $unum = $2;
6381: $group = $3;
6382: $file_name = $3.'/'.$4;
6383: }
6384: if (wantarray) {
6385: return ($type,$udom,$unum,$file_name,$group);
6386: }
6387: return $type;
6388: }
6389:
6390: sub is_portfolio_url {
6391: my ($url) = @_;
6392: return scalar(&parse_portfolio_url($url));
6393: }
6394:
6395: sub is_portfolio_file {
6396: my ($file) = @_;
6397: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6398: return 1;
6399: }
6400: return;
6401: }
6402:
6403: sub usertools_access {
6404: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6405: my ($access,%tools);
6406: if ($context eq '') {
6407: $context = 'tools';
6408: }
6409: if ($context eq 'requestcourses') {
6410: %tools = (
6411: official => 1,
6412: unofficial => 1,
6413: community => 1,
6414: textbook => 1,
6415: );
6416: } elsif ($context eq 'requestauthor') {
6417: %tools = (
6418: requestauthor => 1,
6419: );
6420: } else {
6421: %tools = (
6422: aboutme => 1,
6423: blog => 1,
6424: webdav => 1,
6425: portfolio => 1,
6426: );
6427: }
6428: return if (!defined($tools{$tool}));
6429:
6430: if (($udom eq '') || ($uname eq '')) {
6431: $udom = $env{'user.domain'};
6432: $uname = $env{'user.name'};
6433: }
6434:
6435: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6436: if ($action ne 'reload') {
6437: if ($context eq 'requestcourses') {
6438: return $env{'environment.canrequest.'.$tool};
6439: } elsif ($context eq 'requestauthor') {
6440: return $env{'environment.canrequest.author'};
6441: } else {
6442: return $env{'environment.availabletools.'.$tool};
6443: }
6444: }
6445: }
6446:
6447: my ($toolstatus,$inststatus,$envkey);
6448: if ($context eq 'requestauthor') {
6449: $envkey = $context;
6450: } else {
6451: $envkey = $context.'.'.$tool;
6452: }
6453:
6454: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6455: ($action ne 'reload')) {
6456: $toolstatus = $env{'environment.'.$envkey};
6457: $inststatus = $env{'environment.inststatus'};
6458: } else {
6459: if (ref($userenvref) eq 'HASH') {
6460: $toolstatus = $userenvref->{$envkey};
6461: $inststatus = $userenvref->{'inststatus'};
6462: } else {
6463: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6464: $toolstatus = $userenv{$envkey};
6465: $inststatus = $userenv{'inststatus'};
6466: }
6467: }
6468:
6469: if ($toolstatus ne '') {
6470: if ($toolstatus) {
6471: $access = 1;
6472: } else {
6473: $access = 0;
6474: }
6475: return $access;
6476: }
6477:
6478: my ($is_adv,%domdef);
6479: if (ref($is_advref) eq 'HASH') {
6480: $is_adv = $is_advref->{'is_adv'};
6481: } else {
6482: $is_adv = &is_advanced_user($udom,$uname);
6483: }
6484: if (ref($domdefref) eq 'HASH') {
6485: %domdef = %{$domdefref};
6486: } else {
6487: %domdef = &get_domain_defaults($udom);
6488: }
6489: if (ref($domdef{$tool}) eq 'HASH') {
6490: if ($is_adv) {
6491: if ($domdef{$tool}{'_LC_adv'} ne '') {
6492: if ($domdef{$tool}{'_LC_adv'}) {
6493: $access = 1;
6494: } else {
6495: $access = 0;
6496: }
6497: return $access;
6498: }
6499: }
6500: if ($inststatus ne '') {
6501: my ($hasaccess,$hasnoaccess);
6502: foreach my $affiliation (split(/:/,$inststatus)) {
6503: if ($domdef{$tool}{$affiliation} ne '') {
6504: if ($domdef{$tool}{$affiliation}) {
6505: $hasaccess = 1;
6506: } else {
6507: $hasnoaccess = 1;
6508: }
6509: }
6510: }
6511: if ($hasaccess || $hasnoaccess) {
6512: if ($hasaccess) {
6513: $access = 1;
6514: } elsif ($hasnoaccess) {
6515: $access = 0;
6516: }
6517: return $access;
6518: }
6519: } else {
6520: if ($domdef{$tool}{'default'} ne '') {
6521: if ($domdef{$tool}{'default'}) {
6522: $access = 1;
6523: } elsif ($domdef{$tool}{'default'} == 0) {
6524: $access = 0;
6525: }
6526: return $access;
6527: }
6528: }
6529: } else {
6530: if (($context eq 'tools') && ($tool ne 'webdav')) {
6531: $access = 1;
6532: } else {
6533: $access = 0;
6534: }
6535: return $access;
6536: }
6537: }
6538:
6539: sub is_course_owner {
6540: my ($cdom,$cnum,$udom,$uname) = @_;
6541: if (($udom eq '') || ($uname eq '')) {
6542: $udom = $env{'user.domain'};
6543: $uname = $env{'user.name'};
6544: }
6545: unless (($udom eq '') || ($uname eq '')) {
6546: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6547: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6548: return 1;
6549: } else {
6550: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6551: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6552: return 1;
6553: }
6554: }
6555: }
6556: }
6557: return;
6558: }
6559:
6560: sub is_advanced_user {
6561: my ($udom,$uname) = @_;
6562: if ($udom ne '' && $uname ne '') {
6563: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6564: if (wantarray) {
6565: return ($env{'user.adv'},$env{'user.author'});
6566: } else {
6567: return $env{'user.adv'};
6568: }
6569: }
6570: }
6571: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6572: my %allroles;
6573: my ($is_adv,$is_author);
6574: foreach my $role (keys(%roleshash)) {
6575: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6576: my $area = '/'.$tdomain.'/'.$trest;
6577: if ($sec ne '') {
6578: $area .= '/'.$sec;
6579: }
6580: if (($area ne '') && ($trole ne '')) {
6581: my $spec=$trole.'.'.$area;
6582: if ($trole =~ /^cr\//) {
6583: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6584: } elsif ($trole ne 'gr') {
6585: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6586: }
6587: if ($trole eq 'au') {
6588: $is_author = 1;
6589: }
6590: }
6591: }
6592: foreach my $role (keys(%allroles)) {
6593: last if ($is_adv);
6594: foreach my $item (split(/:/,$allroles{$role})) {
6595: if ($item ne '') {
6596: my ($privilege,$restrictions)=split(/&/,$item);
6597: if ($privilege eq 'adv') {
6598: $is_adv = 1;
6599: last;
6600: }
6601: }
6602: }
6603: }
6604: if (wantarray) {
6605: return ($is_adv,$is_author);
6606: }
6607: return $is_adv;
6608: }
6609:
6610: sub check_can_request {
6611: my ($dom,$can_request,$request_domains) = @_;
6612: my $canreq = 0;
6613: my ($types,$typename) = &Apache::loncommon::course_types();
6614: my @options = ('approval','validate','autolimit');
6615: my $optregex = join('|',@options);
6616: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6617: foreach my $type (@{$types}) {
6618: if (&usertools_access($env{'user.name'},
6619: $env{'user.domain'},
6620: $type,undef,'requestcourses')) {
6621: $canreq ++;
6622: if (ref($request_domains) eq 'HASH') {
6623: push(@{$request_domains->{$type}},$env{'user.domain'});
6624: }
6625: if ($dom eq $env{'user.domain'}) {
6626: $can_request->{$type} = 1;
6627: }
6628: }
6629: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6630: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6631: if (@curr > 0) {
6632: foreach my $item (@curr) {
6633: if (ref($request_domains) eq 'HASH') {
6634: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6635: if ($otherdom ne '') {
6636: if (ref($request_domains->{$type}) eq 'ARRAY') {
6637: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6638: push(@{$request_domains->{$type}},$otherdom);
6639: }
6640: } else {
6641: push(@{$request_domains->{$type}},$otherdom);
6642: }
6643: }
6644: }
6645: }
6646: unless($dom eq $env{'user.domain'}) {
6647: $canreq ++;
6648: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6649: $can_request->{$type} = 1;
6650: }
6651: }
6652: }
6653: }
6654: }
6655: }
6656: return $canreq;
6657: }
6658:
6659: # ---------------------------------------------- Custom access rule evaluation
6660:
6661: sub customaccess {
6662: my ($priv,$uri)=@_;
6663: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6664: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6665: $udom = &LONCAPA::clean_domain($udom);
6666: $ucrs = &LONCAPA::clean_username($ucrs);
6667: my $access=0;
6668: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6669: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6670: if ($type eq 'user') {
6671: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6672: my ($tdom,$tuname)=split(m{/},$scope);
6673: if ($tdom) {
6674: if ($tdom ne $env{'user.domain'}) { next; }
6675: }
6676: if ($tuname) {
6677: if ($tuname ne $env{'user.name'}) { next; }
6678: }
6679: $access=($effect eq 'allow');
6680: last;
6681: }
6682: } else {
6683: if ($role) {
6684: if ($role ne $urole) { next; }
6685: }
6686: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6687: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6688: if ($tdom) {
6689: if ($tdom ne $udom) { next; }
6690: }
6691: if ($tcrs) {
6692: if ($tcrs ne $ucrs) { next; }
6693: }
6694: if ($tsec) {
6695: if ($tsec ne $usec) { next; }
6696: }
6697: $access=($effect eq 'allow');
6698: last;
6699: }
6700: if ($realm eq '' && $role eq '') {
6701: $access=($effect eq 'allow');
6702: }
6703: }
6704: }
6705: return $access;
6706: }
6707:
6708: # ------------------------------------------------- Check for a user privilege
6709:
6710: sub allowed {
6711: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
6712: my $ver_orguri=$uri;
6713: $uri=&deversion($uri);
6714: my $orguri=$uri;
6715: $uri=&declutter($uri);
6716:
6717: if ($priv eq 'evb') {
6718: # Evade communication block restrictions for specified role in a course
6719: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6720: return $1;
6721: } else {
6722: return;
6723: }
6724: }
6725:
6726: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6727: # Free bre access to adm and meta resources
6728: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6729: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6730: && ($priv eq 'bre')) {
6731: return 'F';
6732: }
6733:
6734: # Free bre access to user's own portfolio contents
6735: my ($space,$domain,$name,@dir)=split('/',$uri);
6736: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6737: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6738: my %setters;
6739: my ($startblock,$endblock) =
6740: &Apache::loncommon::blockcheck(\%setters,'port');
6741: if ($startblock && $endblock) {
6742: return 'B';
6743: } else {
6744: return 'F';
6745: }
6746: }
6747:
6748: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6749: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6750: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6751: if (exists($env{'request.course.id'})) {
6752: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6753: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6754: if (($domain eq $cdom) && ($name eq $cnum)) {
6755: my $courseprivid=$env{'request.course.id'};
6756: $courseprivid=~s/\_/\//;
6757: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6758: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6759: return $1;
6760: } else {
6761: if ($env{'request.course.sec'}) {
6762: $courseprivid.='/'.$env{'request.course.sec'};
6763: }
6764: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6765: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6766: return $2;
6767: }
6768: }
6769: }
6770: }
6771: }
6772:
6773: # Free bre to public access
6774:
6775: if ($priv eq 'bre') {
6776: my $copyright=&metadata($uri,'copyright');
6777: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6778: return 'F';
6779: }
6780: if ($copyright eq 'priv') {
6781: $uri=~/([^\/]+)\/([^\/]+)\//;
6782: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6783: return '';
6784: }
6785: }
6786: if ($copyright eq 'domain') {
6787: $uri=~/([^\/]+)\/([^\/]+)\//;
6788: unless (($env{'user.domain'} eq $1) ||
6789: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6790: return '';
6791: }
6792: }
6793: if ($env{'request.role'}=~ /li\.\//) {
6794: # Library role, so allow browsing of resources in this domain.
6795: return 'F';
6796: }
6797: if ($copyright eq 'custom') {
6798: unless (&customaccess($priv,$uri)) { return ''; }
6799: }
6800: }
6801: # Domain coordinator is trying to create a course
6802: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6803: # uri is the requested domain in this case.
6804: # comparison to 'request.role.domain' shows if the user has selected
6805: # a role of dc for the domain in question.
6806: return 'F' if ($uri eq $env{'request.role.domain'});
6807: }
6808:
6809: my $thisallowed='';
6810: my $statecond=0;
6811: my $courseprivid='';
6812:
6813: my $ownaccess;
6814: # Community Coordinator or Assistant Co-author browsing resource space.
6815: if (($priv eq 'bro') && ($env{'user.author'})) {
6816: if ($uri eq '') {
6817: $ownaccess = 1;
6818: } else {
6819: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6820: my $udom = $env{'user.domain'};
6821: my $uname = $env{'user.name'};
6822: if ($uri =~ m{^\Q$udom\E/?$}) {
6823: $ownaccess = 1;
6824: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6825: unless ($uri =~ m{\.\./}) {
6826: $ownaccess = 1;
6827: }
6828: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6829: my $now = time;
6830: if ($uri =~ m{^([^/]+)/?$}) {
6831: my $adom = $1;
6832: foreach my $key (keys(%env)) {
6833: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6834: my ($start,$end) = split('.',$env{$key});
6835: if (($now >= $start) && (!$end || $end < $now)) {
6836: $ownaccess = 1;
6837: last;
6838: }
6839: }
6840: }
6841: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6842: my $adom = $1;
6843: my $aname = $2;
6844: foreach my $role ('ca','aa') {
6845: if ($env{"user.role.$role./$adom/$aname"}) {
6846: my ($start,$end) =
6847: split('.',$env{"user.role.$role./$adom/$aname"});
6848: if (($now >= $start) && (!$end || $end < $now)) {
6849: $ownaccess = 1;
6850: last;
6851: }
6852: }
6853: }
6854: }
6855: }
6856: }
6857: }
6858: }
6859:
6860: # Course
6861:
6862: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6863: unless (($priv eq 'bro') && (!$ownaccess)) {
6864: $thisallowed.=$1;
6865: }
6866: }
6867:
6868: # Domain
6869:
6870: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6871: =~/\Q$priv\E\&([^\:]*)/) {
6872: unless (($priv eq 'bro') && (!$ownaccess)) {
6873: $thisallowed.=$1;
6874: }
6875: }
6876:
6877: # User who is not author or co-author might still be able to edit
6878: # resource of an author in the domain (e.g., if Domain Coordinator).
6879: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6880: (&allowed('mdc',$env{'request.course.id'}))) {
6881: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6882: $thisallowed.=$1;
6883: }
6884: }
6885:
6886: # Course: uri itself is a course
6887: my $courseuri=$uri;
6888: $courseuri=~s/\_(\d)/\/$1/;
6889: $courseuri=~s/^([^\/])/\/$1/;
6890:
6891: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6892: =~/\Q$priv\E\&([^\:]*)/) {
6893: unless (($priv eq 'bro') && (!$ownaccess)) {
6894: $thisallowed.=$1;
6895: }
6896: }
6897:
6898: # URI is an uploaded document for this course, default permissions don't matter
6899: # not allowing 'edit' access (editupload) to uploaded course docs
6900: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6901: $thisallowed='';
6902: my ($match)=&is_on_map($uri);
6903: if ($match) {
6904: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6905: =~/\Q$priv\E\&([^\:]*)/) {
6906: my $value = $1;
6907: if ($noblockcheck) {
6908: $thisallowed.=$value;
6909: } else {
6910: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6911: if (@blockers > 0) {
6912: $thisallowed = 'B';
6913: } else {
6914: $thisallowed.=$value;
6915: }
6916: }
6917: }
6918: } else {
6919: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6920: if ($refuri) {
6921: if ($refuri =~ m|^/adm/|) {
6922: $thisallowed='F';
6923: } else {
6924: $refuri=&declutter($refuri);
6925: my ($match) = &is_on_map($refuri);
6926: if ($match) {
6927: if ($noblockcheck) {
6928: $thisallowed='F';
6929: } else {
6930: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6931: if (@blockers > 0) {
6932: $thisallowed = 'B';
6933: } else {
6934: $thisallowed='F';
6935: }
6936: }
6937: }
6938: }
6939: }
6940: }
6941: }
6942:
6943: if ($priv eq 'bre'
6944: && $thisallowed ne 'F'
6945: && $thisallowed ne '2'
6946: && &is_portfolio_url($uri)) {
6947: $thisallowed = &portfolio_access($uri,$clientip);
6948: }
6949:
6950: # Full access at system, domain or course-wide level? Exit.
6951: if ($thisallowed=~/F/) {
6952: return 'F';
6953: }
6954:
6955: # If this is generating or modifying users, exit with special codes
6956:
6957: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6958: if (($priv eq 'cca') || ($priv eq 'caa')) {
6959: my ($audom,$auname)=split('/',$uri);
6960: # no author name given, so this just checks on the general right to make a co-author in this domain
6961: unless ($auname) { return $thisallowed; }
6962: # an author name is given, so we are about to actually make a co-author for a certain account
6963: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6964: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6965: ($audom ne $env{'request.role.domain'}))) { return ''; }
6966: }
6967: return $thisallowed;
6968: }
6969: #
6970: # Gathered so far: system, domain and course wide privileges
6971: #
6972: # Course: See if uri or referer is an individual resource that is part of
6973: # the course
6974:
6975: if ($env{'request.course.id'}) {
6976:
6977: $courseprivid=$env{'request.course.id'};
6978: if ($env{'request.course.sec'}) {
6979: $courseprivid.='/'.$env{'request.course.sec'};
6980: }
6981: $courseprivid=~s/\_/\//;
6982: my $checkreferer=1;
6983: my ($match,$cond)=&is_on_map($uri);
6984: if ($match) {
6985: $statecond=$cond;
6986: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6987: =~/\Q$priv\E\&([^\:]*)/) {
6988: my $value = $1;
6989: if ($priv eq 'bre') {
6990: if ($noblockcheck) {
6991: $thisallowed.=$value;
6992: } else {
6993: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6994: if (@blockers > 0) {
6995: $thisallowed = 'B';
6996: } else {
6997: $thisallowed.=$value;
6998: }
6999: }
7000: } else {
7001: $thisallowed.=$value;
7002: }
7003: $checkreferer=0;
7004: }
7005: }
7006:
7007: if ($checkreferer) {
7008: my $refuri=$env{'httpref.'.$orguri};
7009: unless ($refuri) {
7010: foreach my $key (keys(%env)) {
7011: if ($key=~/^httpref\..*\*/) {
7012: my $pattern=$key;
7013: $pattern=~s/^httpref\.\/res\///;
7014: $pattern=~s/\*/\[\^\/\]\+/g;
7015: $pattern=~s/\//\\\//g;
7016: if ($orguri=~/$pattern/) {
7017: $refuri=$env{$key};
7018: }
7019: }
7020: }
7021: }
7022:
7023: if ($refuri) {
7024: $refuri=&declutter($refuri);
7025: my ($match,$cond)=&is_on_map($refuri);
7026: if ($match) {
7027: my $refstatecond=$cond;
7028: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7029: =~/\Q$priv\E\&([^\:]*)/) {
7030: my $value = $1;
7031: if ($priv eq 'bre') {
7032: if ($noblockcheck) {
7033: $thisallowed.=$value;
7034: } else {
7035: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7036: if (@blockers > 0) {
7037: $thisallowed = 'B';
7038: } else {
7039: $thisallowed.=$value;
7040: }
7041: }
7042: } else {
7043: $thisallowed.=$value;
7044: }
7045: $uri=$refuri;
7046: $statecond=$refstatecond;
7047: }
7048: }
7049: }
7050: }
7051: }
7052:
7053: #
7054: # Gathered now: all privileges that could apply, and condition number
7055: #
7056: #
7057: # Full or no access?
7058: #
7059:
7060: if ($thisallowed=~/F/) {
7061: return 'F';
7062: }
7063:
7064: unless ($thisallowed) {
7065: return '';
7066: }
7067:
7068: # Restrictions exist, deal with them
7069: #
7070: # C:according to course preferences
7071: # R:according to resource settings
7072: # L:unless locked
7073: # X:according to user session state
7074: #
7075:
7076: # Possibly locked functionality, check all courses
7077: # Locks might take effect only after 10 minutes cache expiration for other
7078: # courses, and 2 minutes for current course
7079:
7080: my $envkey;
7081: if ($thisallowed=~/L/) {
7082: foreach $envkey (keys(%env)) {
7083: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7084: my $courseid=$2;
7085: my $roleid=$1.'.'.$2;
7086: $courseid=~s/^\///;
7087: my $expiretime=600;
7088: if ($env{'request.role'} eq $roleid) {
7089: $expiretime=120;
7090: }
7091: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7092: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7093: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7094: &coursedescription($courseid,{'freshen_cache' => 1});
7095: }
7096: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7097: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7098: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7099: &log($env{'user.domain'},$env{'user.name'},
7100: $env{'user.home'},
7101: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7102: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7103: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7104: return '';
7105: }
7106: }
7107: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7108: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7109: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7110: &log($env{'user.domain'},$env{'user.name'},
7111: $env{'user.home'},
7112: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7113: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7114: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7115: return '';
7116: }
7117: }
7118: }
7119: }
7120: }
7121:
7122: #
7123: # Rest of the restrictions depend on selected course
7124: #
7125:
7126: unless ($env{'request.course.id'}) {
7127: if ($thisallowed eq 'A') {
7128: return 'A';
7129: } elsif ($thisallowed eq 'B') {
7130: return 'B';
7131: } else {
7132: return '1';
7133: }
7134: }
7135:
7136: #
7137: # Now user is definitely in a course
7138: #
7139:
7140:
7141: # Course preferences
7142:
7143: if ($thisallowed=~/C/) {
7144: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7145: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7146: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7147: =~/\Q$rolecode\E/) {
7148: if (($priv ne 'pch') && ($priv ne 'plc')) {
7149: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7150: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7151: $env{'request.course.id'});
7152: }
7153: return '';
7154: }
7155:
7156: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7157: =~/\Q$unamedom\E/) {
7158: if (($priv ne 'pch') && ($priv ne 'plc')) {
7159: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7160: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7161: $env{'request.course.id'});
7162: }
7163: return '';
7164: }
7165: }
7166:
7167: # Resource preferences
7168:
7169: if ($thisallowed=~/R/) {
7170: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7171: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7172: if (($priv ne 'pch') && ($priv ne 'plc')) {
7173: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7174: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7175: }
7176: return '';
7177: }
7178: }
7179:
7180: # Restricted by state or randomout?
7181:
7182: if ($thisallowed=~/X/) {
7183: if ($env{'acc.randomout'}) {
7184: if (!$symb) { $symb=&symbread($uri,1); }
7185: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7186: return '';
7187: }
7188: }
7189: if (&condval($statecond)) {
7190: return '2';
7191: } else {
7192: return '';
7193: }
7194: }
7195:
7196: if ($thisallowed eq 'A') {
7197: return 'A';
7198: } elsif ($thisallowed eq 'B') {
7199: return 'B';
7200: }
7201: return 'F';
7202: }
7203:
7204: # ------------------------------------------- Check construction space access
7205:
7206: sub constructaccess {
7207: my ($url,$setpriv)=@_;
7208:
7209: # We do not allow editing of previous versions of files
7210: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7211:
7212: # Get username and domain from URL
7213: my ($ownername,$ownerdomain,$ownerhome);
7214:
7215: ($ownerdomain,$ownername) =
7216: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
7217:
7218: # The URL does not really point to any authorspace, forget it
7219: unless (($ownername) && ($ownerdomain)) { return ''; }
7220:
7221: # Now we need to see if the user has access to the authorspace of
7222: # $ownername at $ownerdomain
7223:
7224: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7225: # Real author for this?
7226: $ownerhome = $env{'user.home'};
7227: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7228: return ($ownername,$ownerdomain,$ownerhome);
7229: }
7230: } else {
7231: # Co-author for this?
7232: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7233: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7234: $ownerhome = &homeserver($ownername,$ownerdomain);
7235: return ($ownername,$ownerdomain,$ownerhome);
7236: }
7237: }
7238:
7239: # We don't have any access right now. If we are not possibly going to do anything about this,
7240: # we might as well leave
7241: unless ($setpriv) { return ''; }
7242:
7243: # Backdoor access?
7244: my $allowed=&allowed('eco',$ownerdomain);
7245: # Nope
7246: unless ($allowed) { return ''; }
7247: # Looks like we may have access, but could be locked by the owner of the construction space
7248: if ($allowed eq 'U') {
7249: my %blocked=&get('environment',['domcoord.author'],
7250: $ownerdomain,$ownername);
7251: # Is blocked by owner
7252: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7253: }
7254: if (($allowed eq 'F') || ($allowed eq 'U')) {
7255: # Grant temporary access
7256: my $then=$env{'user.login.time'};
7257: my $update=$env{'user.update.time'};
7258: if (!$update) { $update = $then; }
7259: my $refresh=$env{'user.refresh.time'};
7260: if (!$refresh) { $refresh = $update; }
7261: my $now = time;
7262: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7263: $now,'ca','constructaccess');
7264: $ownerhome = &homeserver($ownername,$ownerdomain);
7265: return($ownername,$ownerdomain,$ownerhome);
7266: }
7267: # No business here
7268: return '';
7269: }
7270:
7271: # ----------------------------------------------------------- Content Blocking
7272:
7273: {
7274: # Caches for faster Course Contents display where content blocking
7275: # is in operation (i.e., interval param set) for timed quiz.
7276: #
7277: # User for whom data are being temporarily cached.
7278: my $cacheduser='';
7279: # Cached blockers for this user (a hash of blocking items).
7280: my %cachedblockers=();
7281: # When the data were last cached.
7282: my $cachedlast='';
7283:
7284: sub load_all_blockers {
7285: my ($uname,$udom,$blocks)=@_;
7286: if (($uname ne '') && ($udom ne '')) {
7287: if (($cacheduser eq $uname.':'.$udom) &&
7288: (abs($cachedlast-time)<5)) {
7289: return;
7290: }
7291: }
7292: $cachedlast=time;
7293: $cacheduser=$uname.':'.$udom;
7294: %cachedblockers = &get_commblock_resources($blocks);
7295: }
7296:
7297: sub get_comm_blocks {
7298: my ($cdom,$cnum) = @_;
7299: if ($cdom eq '' || $cnum eq '') {
7300: return unless ($env{'request.course.id'});
7301: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7302: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7303: }
7304: my %commblocks;
7305: my $hashid=$cdom.'_'.$cnum;
7306: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7307: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7308: %commblocks = %{$blocksref};
7309: } else {
7310: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7311: my $cachetime = 600;
7312: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7313: }
7314: return %commblocks;
7315: }
7316:
7317: sub get_commblock_resources {
7318: my ($blocks) = @_;
7319: my %blockers = ();
7320: return %blockers unless ($env{'request.course.id'});
7321: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7322: my %commblocks;
7323: if (ref($blocks) eq 'HASH') {
7324: %commblocks = %{$blocks};
7325: } else {
7326: %commblocks = &get_comm_blocks();
7327: }
7328: return %blockers unless (keys(%commblocks) > 0);
7329: my $navmap = Apache::lonnavmaps::navmap->new();
7330: return %blockers unless (ref($navmap));
7331: my $now = time;
7332: foreach my $block (keys(%commblocks)) {
7333: if ($block =~ /^(\d+)____(\d+)$/) {
7334: my ($start,$end) = ($1,$2);
7335: if ($start <= $now && $end >= $now) {
7336: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7337: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7338: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7339: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7340: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7341: }
7342: }
7343: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7344: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7345: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7346: }
7347: }
7348: }
7349: }
7350: }
7351: } elsif ($block =~ /^firstaccess____(.+)$/) {
7352: my $item = $1;
7353: my @to_test;
7354: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7355: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7356: my @interval;
7357: my $type = 'map';
7358: if ($item eq 'course') {
7359: $type = 'course';
7360: @interval=&EXT("resource.0.interval");
7361: } else {
7362: if ($item =~ /___\d+___/) {
7363: $type = 'resource';
7364: @interval=&EXT("resource.0.interval",$item);
7365: if (ref($navmap)) {
7366: my $res = $navmap->getBySymb($item);
7367: push(@to_test,$res);
7368: }
7369: } else {
7370: my $mapsymb = &symbread($item,1);
7371: if ($mapsymb) {
7372: if (ref($navmap)) {
7373: my $mapres = $navmap->getBySymb($mapsymb);
7374: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
7375: foreach my $res (@to_test) {
7376: my $symb = $res->symb();
7377: next if ($symb eq $mapsymb);
7378: if ($symb ne '') {
7379: @interval=&EXT("resource.0.interval",$symb);
7380: if ($interval[1] eq 'map') {
7381: last;
7382: }
7383: }
7384: }
7385: }
7386: }
7387: }
7388: }
7389: if ($interval[0] =~ /^\d+$/) {
7390: my $first_access;
7391: if ($type eq 'resource') {
7392: $first_access=&get_first_access($interval[1],$item);
7393: } elsif ($type eq 'map') {
7394: $first_access=&get_first_access($interval[1],undef,$item);
7395: } else {
7396: $first_access=&get_first_access($interval[1]);
7397: }
7398: if ($first_access) {
7399: my $timesup = $first_access+$interval[0];
7400: if ($timesup > $now) {
7401: my $activeblock;
7402: foreach my $res (@to_test) {
7403: if ($res->answerable()) {
7404: $activeblock = 1;
7405: last;
7406: }
7407: }
7408: if ($activeblock) {
7409: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7410: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7411: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7412: }
7413: }
7414: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7415: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7416: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7417: }
7418: }
7419: }
7420: }
7421: }
7422: }
7423: }
7424: }
7425: }
7426: }
7427: return %blockers;
7428: }
7429:
7430: sub has_comm_blocking {
7431: my ($priv,$symb,$uri,$blocks) = @_;
7432: my @blockers;
7433: return unless ($env{'request.course.id'});
7434: return unless ($priv eq 'bre');
7435: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7436: return if ($env{'request.state'} eq 'construct');
7437: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
7438: return unless (keys(%cachedblockers) > 0);
7439: my (%possibles,@symbs);
7440: if (!$symb) {
7441: $symb = &symbread($uri,1,1,1,\%possibles);
7442: }
7443: if ($symb) {
7444: @symbs = ($symb);
7445: } elsif (keys(%possibles)) {
7446: @symbs = keys(%possibles);
7447: }
7448: my $noblock;
7449: foreach my $symb (@symbs) {
7450: last if ($noblock);
7451: my ($map,$resid,$resurl)=&decode_symb($symb);
7452: foreach my $block (keys(%cachedblockers)) {
7453: if ($block =~ /^firstaccess____(.+)$/) {
7454: my $item = $1;
7455: if (($item eq $map) || ($item eq $symb)) {
7456: $noblock = 1;
7457: last;
7458: }
7459: }
7460: if (ref($cachedblockers{$block}) eq 'HASH') {
7461: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
7462: if ($cachedblockers{$block}{'resources'}{$symb}) {
7463: unless (grep(/^\Q$block\E$/,@blockers)) {
7464: push(@blockers,$block);
7465: }
7466: }
7467: }
7468: }
7469: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
7470: if ($cachedblockers{$block}{'maps'}{$map}) {
7471: unless (grep(/^\Q$block\E$/,@blockers)) {
7472: push(@blockers,$block);
7473: }
7474: }
7475: }
7476: }
7477: }
7478: return if ($noblock);
7479: return @blockers;
7480: }
7481: }
7482:
7483: # -------------------------------- Deversion and split uri into path an filename
7484:
7485: #
7486: # Removes the version from a URI and
7487: # splits it in to its filename and path to the filename.
7488: # Seems like File::Basename could have done this more clearly.
7489: # Parameters:
7490: # $uri - input URI
7491: # Returns:
7492: # Two element list consisting of
7493: # $pathname - the URI up to and excluding the trailing /
7494: # $filename - The part of the URI following the last /
7495: # NOTE:
7496: # Another realization of this is simply:
7497: # use File::Basename;
7498: # ...
7499: # $uri = shift;
7500: # $filename = basename($uri);
7501: # $path = dirname($uri);
7502: # return ($filename, $path);
7503: #
7504: # The implementation below is probably faster however.
7505: #
7506: sub split_uri_for_cond {
7507: my $uri=&deversion(&declutter(shift));
7508: my @uriparts=split(/\//,$uri);
7509: my $filename=pop(@uriparts);
7510: my $pathname=join('/',@uriparts);
7511: return ($pathname,$filename);
7512: }
7513: # --------------------------------------------------- Is a resource on the map?
7514:
7515: sub is_on_map {
7516: my ($pathname,$filename) = &split_uri_for_cond(shift);
7517: #Trying to find the conditional for the file
7518: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7519: /\&\Q$filename\E\:([\d\|]+)\&/);
7520: if ($match) {
7521: return (1,$1);
7522: } else {
7523: return (0,0);
7524: }
7525: }
7526:
7527: # --------------------------------------------------------- Get symb from alias
7528:
7529: sub get_symb_from_alias {
7530: my $symb=shift;
7531: my ($map,$resid,$url)=&decode_symb($symb);
7532: # Already is a symb
7533: if ($url) { return $symb; }
7534: # Must be an alias
7535: my $aliassymb='';
7536: my %bighash;
7537: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7538: &GDBM_READER(),0640)) {
7539: my $rid=$bighash{'mapalias_'.$symb};
7540: if ($rid) {
7541: my ($mapid,$resid)=split(/\./,$rid);
7542: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7543: $resid,$bighash{'src_'.$rid});
7544: }
7545: untie %bighash;
7546: }
7547: return $aliassymb;
7548: }
7549:
7550: # ----------------------------------------------------------------- Define Role
7551:
7552: sub definerole {
7553: if (allowed('mcr','/')) {
7554: my ($rolename,$sysrole,$domrole,$courole)=@_;
7555: foreach my $role (split(':',$sysrole)) {
7556: my ($crole,$cqual)=split(/\&/,$role);
7557: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7558: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7559: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7560: return "refused:s:$crole&$cqual";
7561: }
7562: }
7563: }
7564: foreach my $role (split(':',$domrole)) {
7565: my ($crole,$cqual)=split(/\&/,$role);
7566: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7567: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7568: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7569: return "refused:d:$crole&$cqual";
7570: }
7571: }
7572: }
7573: foreach my $role (split(':',$courole)) {
7574: my ($crole,$cqual)=split(/\&/,$role);
7575: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7576: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7577: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7578: return "refused:c:$crole&$cqual";
7579: }
7580: }
7581: }
7582: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7583: "$env{'user.domain'}:$env{'user.name'}:".
7584: "rolesdef_$rolename=".
7585: escape($sysrole.'_'.$domrole.'_'.$courole);
7586: return reply($command,$env{'user.home'});
7587: } else {
7588: return 'refused';
7589: }
7590: }
7591:
7592: # ---------------- Make a metadata query against the network of library servers
7593:
7594: sub metadata_query {
7595: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7596: my %rhash;
7597: my %libserv = &all_library();
7598: my @server_list = (defined($server_array) ? @$server_array
7599: : keys(%libserv) );
7600: for my $server (@server_list) {
7601: my $domains = '';
7602: if (ref($domains_hash) eq 'HASH') {
7603: $domains = $domains_hash->{$server};
7604: }
7605: unless ($custom or $customshow) {
7606: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7607: $rhash{$server}=$reply;
7608: }
7609: else {
7610: my $reply=&reply("querysend:".&escape($query).':'.
7611: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7612: $server);
7613: $rhash{$server}=$reply;
7614: }
7615: }
7616: return \%rhash;
7617: }
7618:
7619: # ----------------------------------------- Send log queries and wait for reply
7620:
7621: sub log_query {
7622: my ($uname,$udom,$query,%filters)=@_;
7623: my $uhome=&homeserver($uname,$udom);
7624: if ($uhome eq 'no_host') { return 'error: no_host'; }
7625: my $uhost=&hostname($uhome);
7626: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7627: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7628: $uhome);
7629: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7630: return get_query_reply($queryid);
7631: }
7632:
7633: # -------------------------- Update MySQL table for portfolio file
7634:
7635: sub update_portfolio_table {
7636: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7637: if ($group ne '') {
7638: $file_name =~s /^\Q$group\E//;
7639: }
7640: my $homeserver = &homeserver($uname,$udom);
7641: my $queryid=
7642: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7643: ':'.&escape($file_name).':'.$action,$homeserver);
7644: my $reply = &get_query_reply($queryid);
7645: return $reply;
7646: }
7647:
7648: # -------------------------- Update MySQL allusers table
7649:
7650: sub update_allusers_table {
7651: my ($uname,$udom,$names) = @_;
7652: my $homeserver = &homeserver($uname,$udom);
7653: my $queryid=
7654: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7655: 'lastname='.&escape($names->{'lastname'}).'%%'.
7656: 'firstname='.&escape($names->{'firstname'}).'%%'.
7657: 'middlename='.&escape($names->{'middlename'}).'%%'.
7658: 'generation='.&escape($names->{'generation'}).'%%'.
7659: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7660: 'id='.&escape($names->{'id'}),$homeserver);
7661: return;
7662: }
7663:
7664: # ------- Request retrieval of institutional classlists for course(s)
7665:
7666: sub fetch_enrollment_query {
7667: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7668: my $homeserver;
7669: my $maxtries = 1;
7670: if ($context eq 'automated') {
7671: $homeserver = $perlvar{'lonHostID'};
7672: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7673: } else {
7674: $homeserver = &homeserver($cnum,$dom);
7675: }
7676: my $host=&hostname($homeserver);
7677: my $cmd = '';
7678: foreach my $affiliate (keys(%{$affiliatesref})) {
7679: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7680: }
7681: $cmd =~ s/%%$//;
7682: $cmd = &escape($cmd);
7683: my $query = 'fetchenrollment';
7684: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7685: unless ($queryid=~/^\Q$host\E\_/) {
7686: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7687: return 'error: '.$queryid;
7688: }
7689: my $reply = &get_query_reply($queryid);
7690: my $tries = 1;
7691: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7692: $reply = &get_query_reply($queryid);
7693: $tries ++;
7694: }
7695: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7696: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7697: } else {
7698: my @responses = split(/:/,$reply);
7699: if ($homeserver eq $perlvar{'lonHostID'}) {
7700: foreach my $line (@responses) {
7701: my ($key,$value) = split(/=/,$line,2);
7702: $$replyref{$key} = $value;
7703: }
7704: } else {
7705: my $pathname = LONCAPA::tempdir();
7706: foreach my $line (@responses) {
7707: my ($key,$value) = split(/=/,$line);
7708: $$replyref{$key} = $value;
7709: if ($value > 0) {
7710: foreach my $item (@{$$affiliatesref{$key}}) {
7711: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7712: my $destname = $pathname.'/'.$filename;
7713: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7714: if ($xml_classlist =~ /^error/) {
7715: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7716: } else {
7717: if ( open(FILE,">$destname") ) {
7718: print FILE &unescape($xml_classlist);
7719: close(FILE);
7720: } else {
7721: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7722: }
7723: }
7724: }
7725: }
7726: }
7727: }
7728: return 'ok';
7729: }
7730: return 'error';
7731: }
7732:
7733: sub get_query_reply {
7734: my $queryid=shift;
7735: my $replyfile=LONCAPA::tempdir().$queryid;
7736: my $reply='';
7737: for (1..100) {
7738: sleep(0.2);
7739: if (-e $replyfile.'.end') {
7740: if (open(my $fh,$replyfile)) {
7741: $reply = join('',<$fh>);
7742: close($fh);
7743: } else { return 'error: reply_file_error'; }
7744: return &unescape($reply);
7745: }
7746: }
7747: return 'timeout:'.$queryid;
7748: }
7749:
7750: sub courselog_query {
7751: #
7752: # possible filters:
7753: # url: url or symb
7754: # username
7755: # domain
7756: # action: view, submit, grade
7757: # start: timestamp
7758: # end: timestamp
7759: #
7760: my (%filters)=@_;
7761: unless ($env{'request.course.id'}) { return 'no_course'; }
7762: if ($filters{'url'}) {
7763: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7764: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7765: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7766: }
7767: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7768: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7769: return &log_query($cname,$cdom,'courselog',%filters);
7770: }
7771:
7772: sub userlog_query {
7773: #
7774: # possible filters:
7775: # action: log check role
7776: # start: timestamp
7777: # end: timestamp
7778: #
7779: my ($uname,$udom,%filters)=@_;
7780: return &log_query($uname,$udom,'userlog',%filters);
7781: }
7782:
7783: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7784:
7785: sub auto_run {
7786: my ($cnum,$cdom) = @_;
7787: my $response = 0;
7788: my $settings;
7789: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7790: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7791: $settings = $domconfig{'autoenroll'};
7792: if ($settings->{'run'} eq '1') {
7793: $response = 1;
7794: }
7795: } else {
7796: my $homeserver;
7797: if (&is_course($cdom,$cnum)) {
7798: $homeserver = &homeserver($cnum,$cdom);
7799: } else {
7800: $homeserver = &domain($cdom,'primary');
7801: }
7802: if ($homeserver ne 'no_host') {
7803: $response = &reply('autorun:'.$cdom,$homeserver);
7804: }
7805: }
7806: return $response;
7807: }
7808:
7809: sub auto_get_sections {
7810: my ($cnum,$cdom,$inst_coursecode) = @_;
7811: my $homeserver;
7812: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7813: $homeserver = &homeserver($cnum,$cdom);
7814: }
7815: if (!defined($homeserver)) {
7816: if ($cdom =~ /^$match_domain$/) {
7817: $homeserver = &domain($cdom,'primary');
7818: }
7819: }
7820: my @secs;
7821: if (defined($homeserver)) {
7822: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7823: unless ($response eq 'refused') {
7824: @secs = split(/:/,$response);
7825: }
7826: }
7827: return @secs;
7828: }
7829:
7830: sub auto_new_course {
7831: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7832: my $homeserver = &homeserver($cnum,$cdom);
7833: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7834: return $response;
7835: }
7836:
7837: sub auto_validate_courseID {
7838: my ($cnum,$cdom,$inst_course_id) = @_;
7839: my $homeserver = &homeserver($cnum,$cdom);
7840: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7841: return $response;
7842: }
7843:
7844: sub auto_validate_instcode {
7845: my ($cnum,$cdom,$instcode,$owner) = @_;
7846: my ($homeserver,$response);
7847: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7848: $homeserver = &homeserver($cnum,$cdom);
7849: }
7850: if (!defined($homeserver)) {
7851: if ($cdom =~ /^$match_domain$/) {
7852: $homeserver = &domain($cdom,'primary');
7853: }
7854: }
7855: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7856: &escape($instcode).':'.&escape($owner),$homeserver));
7857: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7858: return ($outcome,$description,$defaultcredits);
7859: }
7860:
7861: sub auto_create_password {
7862: my ($cnum,$cdom,$authparam,$udom) = @_;
7863: my ($homeserver,$response);
7864: my $create_passwd = 0;
7865: my $authchk = '';
7866: if ($udom =~ /^$match_domain$/) {
7867: $homeserver = &domain($udom,'primary');
7868: }
7869: if ($homeserver eq '') {
7870: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7871: $homeserver = &homeserver($cnum,$cdom);
7872: }
7873: }
7874: if ($homeserver eq '') {
7875: $authchk = 'nodomain';
7876: } else {
7877: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
7878: if ($response eq 'refused') {
7879: $authchk = 'refused';
7880: } else {
7881: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
7882: }
7883: }
7884: return ($authparam,$create_passwd,$authchk);
7885: }
7886:
7887: sub auto_photo_permission {
7888: my ($cnum,$cdom,$students) = @_;
7889: my $homeserver = &homeserver($cnum,$cdom);
7890: my ($outcome,$perm_reqd,$conditions) =
7891: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7892: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7893: return (undef,undef);
7894: }
7895: return ($outcome,$perm_reqd,$conditions);
7896: }
7897:
7898: sub auto_checkphotos {
7899: my ($uname,$udom,$pid) = @_;
7900: my $homeserver = &homeserver($uname,$udom);
7901: my ($result,$resulttype);
7902: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7903: &escape($uname).':'.&escape($pid),
7904: $homeserver));
7905: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7906: return (undef,undef);
7907: }
7908: if ($outcome) {
7909: ($result,$resulttype) = split(/:/,$outcome);
7910: }
7911: return ($result,$resulttype);
7912: }
7913:
7914: sub auto_photochoice {
7915: my ($cnum,$cdom) = @_;
7916: my $homeserver = &homeserver($cnum,$cdom);
7917: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7918: &escape($cdom),
7919: $homeserver)));
7920: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7921: return (undef,undef);
7922: }
7923: return ($update,$comment);
7924: }
7925:
7926: sub auto_photoupdate {
7927: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7928: my $homeserver = &homeserver($cnum,$dom);
7929: my $host=&hostname($homeserver);
7930: my $cmd = '';
7931: my $maxtries = 1;
7932: foreach my $affiliate (keys(%{$affiliatesref})) {
7933: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7934: }
7935: $cmd =~ s/%%$//;
7936: $cmd = &escape($cmd);
7937: my $query = 'institutionalphotos';
7938: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7939: unless ($queryid=~/^\Q$host\E\_/) {
7940: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7941: return 'error: '.$queryid;
7942: }
7943: my $reply = &get_query_reply($queryid);
7944: my $tries = 1;
7945: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7946: $reply = &get_query_reply($queryid);
7947: $tries ++;
7948: }
7949: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7950: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7951: } else {
7952: my @responses = split(/:/,$reply);
7953: my $outcome = shift(@responses);
7954: foreach my $item (@responses) {
7955: my ($key,$value) = split(/=/,$item);
7956: $$photo{$key} = $value;
7957: }
7958: return $outcome;
7959: }
7960: return 'error';
7961: }
7962:
7963: sub auto_instcode_format {
7964: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7965: $cat_order) = @_;
7966: my $courses = '';
7967: my @homeservers;
7968: if ($caller eq 'global') {
7969: my %servers = &get_servers($codedom,'library');
7970: foreach my $tryserver (keys(%servers)) {
7971: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7972: push(@homeservers,$tryserver);
7973: }
7974: }
7975: } elsif ($caller eq 'requests') {
7976: if ($codedom =~ /^$match_domain$/) {
7977: my $chome = &domain($codedom,'primary');
7978: unless ($chome eq 'no_host') {
7979: push(@homeservers,$chome);
7980: }
7981: }
7982: } else {
7983: push(@homeservers,&homeserver($caller,$codedom));
7984: }
7985: foreach my $code (keys(%{$instcodes})) {
7986: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7987: }
7988: chop($courses);
7989: my $ok_response = 0;
7990: my $response;
7991: while (@homeservers > 0 && $ok_response == 0) {
7992: my $server = shift(@homeservers);
7993: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7994: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7995: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7996: split(/:/,$response);
7997: %{$codes} = (%{$codes},&str2hash($codes_str));
7998: push(@{$codetitles},&str2array($codetitles_str));
7999: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8000: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8001: $ok_response = 1;
8002: }
8003: }
8004: if ($ok_response) {
8005: return 'ok';
8006: } else {
8007: return $response;
8008: }
8009: }
8010:
8011: sub auto_instcode_defaults {
8012: my ($domain,$returnhash,$code_order) = @_;
8013: my @homeservers;
8014:
8015: my %servers = &get_servers($domain,'library');
8016: foreach my $tryserver (keys(%servers)) {
8017: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8018: push(@homeservers,$tryserver);
8019: }
8020: }
8021:
8022: my $response;
8023: foreach my $server (@homeservers) {
8024: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8025: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8026:
8027: foreach my $pair (split(/\&/,$response)) {
8028: my ($name,$value)=split(/\=/,$pair);
8029: if ($name eq 'code_order') {
8030: @{$code_order} = split(/\&/,&unescape($value));
8031: } else {
8032: $returnhash->{&unescape($name)}=&unescape($value);
8033: }
8034: }
8035: return 'ok';
8036: }
8037:
8038: return $response;
8039: }
8040:
8041: sub auto_possible_instcodes {
8042: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8043: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8044: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8045: return;
8046: }
8047: my (@homeservers,$uhome);
8048: if (defined(&domain($domain,'primary'))) {
8049: $uhome=&domain($domain,'primary');
8050: push(@homeservers,&domain($domain,'primary'));
8051: } else {
8052: my %servers = &get_servers($domain,'library');
8053: foreach my $tryserver (keys(%servers)) {
8054: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8055: push(@homeservers,$tryserver);
8056: }
8057: }
8058: }
8059: my $response;
8060: foreach my $server (@homeservers) {
8061: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8062: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8063: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8064: split(':',$response);
8065: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8066: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8067: foreach my $item (split('&',$cat_title)) {
8068: my ($name,$value)=split('=',$item);
8069: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8070: }
8071: foreach my $item (split('&',$cat_order)) {
8072: my ($name,$value)=split('=',$item);
8073: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8074: }
8075: return 'ok';
8076: }
8077: return $response;
8078: }
8079:
8080: sub auto_courserequest_checks {
8081: my ($dom) = @_;
8082: my ($homeserver,%validations);
8083: if ($dom =~ /^$match_domain$/) {
8084: $homeserver = &domain($dom,'primary');
8085: }
8086: unless ($homeserver eq 'no_host') {
8087: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8088: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8089: my @items = split(/&/,$response);
8090: foreach my $item (@items) {
8091: my ($key,$value) = split('=',$item);
8092: $validations{&unescape($key)} = &thaw_unescape($value);
8093: }
8094: }
8095: }
8096: return %validations;
8097: }
8098:
8099: sub auto_courserequest_validation {
8100: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8101: my ($homeserver,$response);
8102: if ($dom =~ /^$match_domain$/) {
8103: $homeserver = &domain($dom,'primary');
8104: }
8105: unless ($homeserver eq 'no_host') {
8106: my $customdata;
8107: if (ref($custominfo) eq 'HASH') {
8108: $customdata = &freeze_escape($custominfo);
8109: }
8110: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8111: ':'.&escape($crstype).':'.&escape($inststatuslist).
8112: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8113: $customdata,$homeserver));
8114: }
8115: return $response;
8116: }
8117:
8118: sub auto_validate_class_sec {
8119: my ($cdom,$cnum,$owners,$inst_class) = @_;
8120: my $homeserver = &homeserver($cnum,$cdom);
8121: my $ownerlist;
8122: if (ref($owners) eq 'ARRAY') {
8123: $ownerlist = join(',',@{$owners});
8124: } else {
8125: $ownerlist = $owners;
8126: }
8127: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8128: &escape($ownerlist).':'.$cdom,$homeserver);
8129: return $response;
8130: }
8131:
8132: sub auto_crsreq_update {
8133: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8134: $code,$accessstart,$accessend,$inbound) = @_;
8135: my ($homeserver,%crsreqresponse);
8136: if ($cdom =~ /^$match_domain$/) {
8137: $homeserver = &domain($cdom,'primary');
8138: }
8139: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8140: my $info;
8141: if (ref($inbound) eq 'HASH') {
8142: $info = &freeze_escape($inbound);
8143: }
8144: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8145: ':'.&escape($action).':'.&escape($ownername).':'.
8146: &escape($ownerdomain).':'.&escape($fullname).':'.
8147: &escape($title).':'.&escape($code).':'.
8148: &escape($accessstart).':'.&escape($accessend).':'.$info,
8149: $homeserver);
8150: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8151: my @items = split(/&/,$response);
8152: foreach my $item (@items) {
8153: my ($key,$value) = split('=',$item);
8154: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8155: }
8156: }
8157: }
8158: return \%crsreqresponse;
8159: }
8160:
8161: sub check_instcode_cloning {
8162: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
8163: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8164: return;
8165: }
8166: my $canclone;
8167: if (@{$code_order} > 0) {
8168: my $instcoderegexp ='^';
8169: my @clonecodes = split(/\&/,$cloner);
8170: foreach my $item (@{$code_order}) {
8171: if (grep(/^\Q$item\E=/,@clonecodes)) {
8172: foreach my $pair (@clonecodes) {
8173: my ($key,$val) = split(/\=/,$pair,2);
8174: $val = &unescape($val);
8175: if ($key eq $item) {
8176: $instcoderegexp .= '('.$val.')';
8177: last;
8178: }
8179: }
8180: } else {
8181: $instcoderegexp .= $codedefaults->{$item};
8182: }
8183: }
8184: $instcoderegexp .= '$';
8185: my (@from,@to);
8186: eval {
8187: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8188: (@to) = ($clonetocode =~ /$instcoderegexp/);
8189: };
8190: if ((@from > 0) && (@to > 0)) {
8191: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8192: if (!@diffs) {
8193: $canclone = 1;
8194: }
8195: }
8196: }
8197: return $canclone;
8198: }
8199:
8200: sub default_instcode_cloning {
8201: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
8202: my (%codedefaults,@code_order,$canclone);
8203: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
8204: %codedefaults = %{$codedefaultsref};
8205: @code_order = @{$codeorderref};
8206: } elsif ($clonedom) {
8207: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
8208: }
8209: if (($domdefclone) && (@code_order)) {
8210: my @clonecodes = split(/\+/,$domdefclone);
8211: my $instcoderegexp ='^';
8212: foreach my $item (@code_order) {
8213: if (grep(/^\Q$item\E$/,@clonecodes)) {
8214: $instcoderegexp .= '('.$codedefaults{$item}.')';
8215: } else {
8216: $instcoderegexp .= $codedefaults{$item};
8217: }
8218: }
8219: $instcoderegexp .= '$';
8220: my (@from,@to);
8221: eval {
8222: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8223: (@to) = ($clonetocode =~ /$instcoderegexp/);
8224: };
8225: if ((@from > 0) && (@to > 0)) {
8226: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8227: if (!@diffs) {
8228: $canclone = 1;
8229: }
8230: }
8231: }
8232: return $canclone;
8233: }
8234:
8235: # ------------------------------------------------------- Course Group routines
8236:
8237: sub get_coursegroups {
8238: my ($cdom,$cnum,$group,$namespace) = @_;
8239: return(&dump($namespace,$cdom,$cnum,$group));
8240: }
8241:
8242: sub modify_coursegroup {
8243: my ($cdom,$cnum,$groupsettings) = @_;
8244: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8245: }
8246:
8247: sub toggle_coursegroup_status {
8248: my ($cdom,$cnum,$group,$action) = @_;
8249: my ($from_namespace,$to_namespace);
8250: if ($action eq 'delete') {
8251: $from_namespace = 'coursegroups';
8252: $to_namespace = 'deleted_groups';
8253: } else {
8254: $from_namespace = 'deleted_groups';
8255: $to_namespace = 'coursegroups';
8256: }
8257: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8258: if (my $tmp = &error(%curr_group)) {
8259: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8260: return ('read error',$tmp);
8261: } else {
8262: my %savedsettings = %curr_group;
8263: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8264: my $deloutcome;
8265: if ($result eq 'ok') {
8266: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8267: } else {
8268: return ('write error',$result);
8269: }
8270: if ($deloutcome eq 'ok') {
8271: return 'ok';
8272: } else {
8273: return ('delete error',$deloutcome);
8274: }
8275: }
8276: }
8277:
8278: sub modify_group_roles {
8279: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8280: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8281: my $role = 'gr/'.&escape($userprivs);
8282: my ($uname,$udom) = split(/:/,$user);
8283: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8284: if ($result eq 'ok') {
8285: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8286: }
8287: return $result;
8288: }
8289:
8290: sub modify_coursegroup_membership {
8291: my ($cdom,$cnum,$membership) = @_;
8292: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8293: return $result;
8294: }
8295:
8296: sub get_active_groups {
8297: my ($udom,$uname,$cdom,$cnum) = @_;
8298: my $now = time;
8299: my %groups = ();
8300: foreach my $key (keys(%env)) {
8301: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8302: my ($start,$end) = split(/\./,$env{$key});
8303: if (($end!=0) && ($end<$now)) { next; }
8304: if (($start!=0) && ($start>$now)) { next; }
8305: if ($1 eq $cdom && $2 eq $cnum) {
8306: $groups{$3} = $env{$key} ;
8307: }
8308: }
8309: }
8310: return %groups;
8311: }
8312:
8313: sub get_group_membership {
8314: my ($cdom,$cnum,$group) = @_;
8315: return(&dump('groupmembership',$cdom,$cnum,$group));
8316: }
8317:
8318: sub get_users_groups {
8319: my ($udom,$uname,$courseid) = @_;
8320: my @usersgroups;
8321: my $cachetime=1800;
8322:
8323: my $hashid="$udom:$uname:$courseid";
8324: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8325: if (defined($cached)) {
8326: @usersgroups = split(/:/,$grouplist);
8327: } else {
8328: $grouplist = '';
8329: my $courseurl = &courseid_to_courseurl($courseid);
8330: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8331: my $access_end = $env{'course.'.$courseid.
8332: '.default_enrollment_end_date'};
8333: my $now = time;
8334: foreach my $key (keys(%roleshash)) {
8335: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8336: my $group = $1;
8337: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8338: my $start = $2;
8339: my $end = $1;
8340: if ($start == -1) { next; } # deleted from group
8341: if (($start!=0) && ($start>$now)) { next; }
8342: if (($end!=0) && ($end<$now)) {
8343: if ($access_end && $access_end < $now) {
8344: if ($access_end - $end < 86400) {
8345: push(@usersgroups,$group);
8346: }
8347: }
8348: next;
8349: }
8350: push(@usersgroups,$group);
8351: }
8352: }
8353: }
8354: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8355: $grouplist = join(':',@usersgroups);
8356: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8357: }
8358: return @usersgroups;
8359: }
8360:
8361: sub devalidate_getgroups_cache {
8362: my ($udom,$uname,$cdom,$cnum)=@_;
8363: my $courseid = $cdom.'_'.$cnum;
8364:
8365: my $hashid="$udom:$uname:$courseid";
8366: &devalidate_cache_new('getgroups',$hashid);
8367: }
8368:
8369: # ------------------------------------------------------------------ Plain Text
8370:
8371: sub plaintext {
8372: my ($short,$type,$cid,$forcedefault) = @_;
8373: if ($short =~ m{^cr/}) {
8374: return (split('/',$short))[-1];
8375: }
8376: if (!defined($cid)) {
8377: $cid = $env{'request.course.id'};
8378: }
8379: my %rolenames = (
8380: Course => 'std',
8381: Community => 'alt1',
8382: );
8383: if ($cid ne '') {
8384: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8385: unless ($forcedefault) {
8386: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8387: &Apache::lonlocal::mt_escape(\$roletext);
8388: return &Apache::lonlocal::mt($roletext);
8389: }
8390: }
8391: }
8392: if ((defined($type)) && (defined($rolenames{$type})) &&
8393: (defined($rolenames{$type})) &&
8394: (defined($prp{$short}{$rolenames{$type}}))) {
8395: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8396: } elsif ($cid ne '') {
8397: my $crstype = $env{'course.'.$cid.'.type'};
8398: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8399: (defined($prp{$short}{$rolenames{$crstype}}))) {
8400: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8401: }
8402: }
8403: return &Apache::lonlocal::mt($prp{$short}{'std'});
8404: }
8405:
8406: # ----------------------------------------------------------------- Assign Role
8407:
8408: sub assignrole {
8409: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8410: $context)=@_;
8411: my $mrole;
8412: if ($role =~ /^cr\//) {
8413: my $cwosec=$url;
8414: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8415: unless (&allowed('ccr',$cwosec)) {
8416: my $refused = 1;
8417: if ($context eq 'requestcourses') {
8418: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8419: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8420: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8421: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8422: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8423: if ($crsenv{'internal.courseowner'} eq
8424: $env{'user.name'}.':'.$env{'user.domain'}) {
8425: $refused = '';
8426: }
8427: }
8428: }
8429: }
8430: }
8431: if ($refused) {
8432: &logthis('Refused custom assignrole: '.
8433: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8434: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8435: return 'refused';
8436: }
8437: }
8438: $mrole='cr';
8439: } elsif ($role =~ /^gr\//) {
8440: my $cwogrp=$url;
8441: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8442: unless (&allowed('mdg',$cwogrp)) {
8443: &logthis('Refused group assignrole: '.
8444: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8445: $env{'user.name'}.' at '.$env{'user.domain'});
8446: return 'refused';
8447: }
8448: $mrole='gr';
8449: } else {
8450: my $cwosec=$url;
8451: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8452: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8453: my $refused;
8454: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8455: if (!(&allowed('c'.$role,$url))) {
8456: $refused = 1;
8457: }
8458: } else {
8459: $refused = 1;
8460: }
8461: if ($refused) {
8462: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8463: if (!$selfenroll && $context eq 'course') {
8464: my %crsenv;
8465: if ($role eq 'cc' || $role eq 'co') {
8466: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8467: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8468: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8469: if ($crsenv{'internal.courseowner'} eq
8470: $env{'user.name'}.':'.$env{'user.domain'}) {
8471: $refused = '';
8472: }
8473: }
8474: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8475: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8476: if ($crsenv{'internal.courseowner'} eq
8477: $env{'user.name'}.':'.$env{'user.domain'}) {
8478: $refused = '';
8479: }
8480: }
8481: }
8482: }
8483: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8484: $refused = '';
8485: } elsif ($context eq 'requestcourses') {
8486: my @possroles = ('st','ta','ep','in','cc','co');
8487: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8488: my $wrongcc;
8489: if ($cnum =~ /^$match_community$/) {
8490: $wrongcc = 1 if ($role eq 'cc');
8491: } else {
8492: $wrongcc = 1 if ($role eq 'co');
8493: }
8494: unless ($wrongcc) {
8495: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8496: if ($crsenv{'internal.courseowner'} eq
8497: $env{'user.name'}.':'.$env{'user.domain'}) {
8498: $refused = '';
8499: }
8500: }
8501: }
8502: } elsif ($context eq 'requestauthor') {
8503: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8504: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8505: if ($env{'environment.requestauthor'} eq 'automatic') {
8506: $refused = '';
8507: } else {
8508: my %domdefaults = &get_domain_defaults($udom);
8509: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8510: my $checkbystatus;
8511: if ($env{'user.adv'}) {
8512: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8513: if ($disposition eq 'automatic') {
8514: $refused = '';
8515: } elsif ($disposition eq '') {
8516: $checkbystatus = 1;
8517: }
8518: } else {
8519: $checkbystatus = 1;
8520: }
8521: if ($checkbystatus) {
8522: if ($env{'environment.inststatus'}) {
8523: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8524: foreach my $type (@inststatuses) {
8525: if (($type ne '') &&
8526: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8527: $refused = '';
8528: }
8529: }
8530: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8531: $refused = '';
8532: }
8533: }
8534: }
8535: }
8536: }
8537: }
8538: if ($refused) {
8539: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8540: ' '.$role.' '.$end.' '.$start.' by '.
8541: $env{'user.name'}.' at '.$env{'user.domain'});
8542: return 'refused';
8543: }
8544: }
8545: } elsif ($role eq 'au') {
8546: if ($url ne '/'.$udom.'/') {
8547: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8548: ' to assign author role for '.$uname.':'.$udom.
8549: ' in domain: '.$url.' refused (wrong domain).');
8550: return 'refused';
8551: }
8552: }
8553: $mrole=$role;
8554: }
8555: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8556: "$udom:$uname:$url".'_'."$mrole=$role";
8557: if ($end) { $command.='_'.$end; }
8558: if ($start) {
8559: if ($end) {
8560: $command.='_'.$start;
8561: } else {
8562: $command.='_0_'.$start;
8563: }
8564: }
8565: my $origstart = $start;
8566: my $origend = $end;
8567: my $delflag;
8568: # actually delete
8569: if ($deleteflag) {
8570: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8571: # modify command to delete the role
8572: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8573: "$udom:$uname:$url".'_'."$mrole";
8574: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8575: # set start and finish to negative values for userrolelog
8576: $start=-1;
8577: $end=-1;
8578: $delflag = 1;
8579: }
8580: }
8581: # send command
8582: my $answer=&reply($command,&homeserver($uname,$udom));
8583: # log new user role if status is ok
8584: if ($answer eq 'ok') {
8585: &userrolelog($role,$uname,$udom,$url,$start,$end);
8586: if (($role eq 'cc') || ($role eq 'in') ||
8587: ($role eq 'ep') || ($role eq 'ad') ||
8588: ($role eq 'ta') || ($role eq 'st') ||
8589: ($role=~/^cr/) || ($role eq 'gr') ||
8590: ($role eq 'co')) {
8591: # for course roles, perform group memberships changes triggered by role change.
8592: unless ($role =~ /^gr/) {
8593: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8594: $origstart,$selfenroll,$context);
8595: }
8596: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8597: $selfenroll,$context);
8598: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8599: ($role eq 'au') || ($role eq 'dc')) {
8600: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8601: $context);
8602: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8603: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8604: $context);
8605: }
8606: if ($role eq 'cc') {
8607: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8608: }
8609: }
8610: return $answer;
8611: }
8612:
8613: sub autoupdate_coowners {
8614: my ($url,$end,$start,$uname,$udom) = @_;
8615: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8616: if (($cdom ne '') && ($cnum ne '')) {
8617: my $now = time;
8618: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8619: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8620: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8621: my $instcode = $coursehash{'internal.coursecode'};
8622: if ($instcode ne '') {
8623: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8624: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8625: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8626: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8627: if ($result eq 'valid') {
8628: if ($coursehash{'internal.co-owners'}) {
8629: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8630: push(@newcoowners,$coowner);
8631: }
8632: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8633: push(@newcoowners,$uname.':'.$udom);
8634: }
8635: @newcoowners = sort(@newcoowners);
8636: } else {
8637: push(@newcoowners,$uname.':'.$udom);
8638: }
8639: } else {
8640: if ($coursehash{'internal.co-owners'}) {
8641: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8642: unless ($coowner eq $uname.':'.$udom) {
8643: push(@newcoowners,$coowner);
8644: }
8645: }
8646: unless (@newcoowners > 0) {
8647: $delcoowners = 1;
8648: $coowners = '';
8649: }
8650: }
8651: }
8652: if (@newcoowners || $delcoowners) {
8653: &store_coowners($cdom,$cnum,$coursehash{'home'},
8654: $delcoowners,@newcoowners);
8655: }
8656: }
8657: }
8658: }
8659: }
8660: }
8661: }
8662:
8663: sub store_coowners {
8664: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8665: my $cid = $cdom.'_'.$cnum;
8666: my ($coowners,$delresult,$putresult);
8667: if (@newcoowners) {
8668: $coowners = join(',',@newcoowners);
8669: my %coownershash = (
8670: 'internal.co-owners' => $coowners,
8671: );
8672: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8673: if ($putresult eq 'ok') {
8674: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8675: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8676: }
8677: }
8678: }
8679: if ($delcoowners) {
8680: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8681: if ($delresult eq 'ok') {
8682: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8683: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8684: }
8685: }
8686: }
8687: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8688: my %crsinfo =
8689: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8690: if (ref($crsinfo{$cid}) eq 'HASH') {
8691: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8692: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8693: }
8694: }
8695: }
8696:
8697: # -------------------------------------------------- Modify user authentication
8698: # Overrides without validation
8699:
8700: sub modifyuserauth {
8701: my ($udom,$uname,$umode,$upass)=@_;
8702: my $uhome=&homeserver($uname,$udom);
8703: unless (&allowed('mau',$udom)) { return 'refused'; }
8704: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8705: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8706: ' in domain '.$env{'request.role.domain'});
8707: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8708: &escape($upass),$uhome);
8709: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8710: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8711: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8712: &log($udom,,$uname,$uhome,
8713: 'Authentication changed by '.$env{'user.domain'}.', '.
8714: $env{'user.name'}.', '.$umode.
8715: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8716: unless ($reply eq 'ok') {
8717: &logthis('Authentication mode error: '.$reply);
8718: return 'error: '.$reply;
8719: }
8720: return 'ok';
8721: }
8722:
8723: # --------------------------------------------------------------- Modify a user
8724:
8725: sub modifyuser {
8726: my ($udom, $uname, $uid,
8727: $umode, $upass, $first,
8728: $middle, $last, $gene,
8729: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8730: $udom= &LONCAPA::clean_domain($udom);
8731: $uname=&LONCAPA::clean_username($uname);
8732: my $showcandelete = 'none';
8733: if (ref($candelete) eq 'ARRAY') {
8734: if (@{$candelete} > 0) {
8735: $showcandelete = join(', ',@{$candelete});
8736: }
8737: }
8738: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8739: $umode.', '.$first.', '.$middle.', '.
8740: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8741: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8742: ' desiredhome not specified').
8743: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8744: ' in domain '.$env{'request.role.domain'});
8745: my $uhome=&homeserver($uname,$udom,'true');
8746: my $newuser;
8747: if ($uhome eq 'no_host') {
8748: $newuser = 1;
8749: }
8750: # ----------------------------------------------------------------- Create User
8751: if (($uhome eq 'no_host') &&
8752: (($umode && $upass) || ($umode eq 'localauth'))) {
8753: my $unhome='';
8754: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8755: $unhome = $desiredhome;
8756: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8757: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8758: } else { # load balancing routine for determining $unhome
8759: my $loadm=10000000;
8760: my %servers = &get_servers($udom,'library');
8761: foreach my $tryserver (keys(%servers)) {
8762: my $answer=reply('load',$tryserver);
8763: if (($answer=~/\d+/) && ($answer<$loadm)) {
8764: $loadm=$answer;
8765: $unhome=$tryserver;
8766: }
8767: }
8768: }
8769: if (($unhome eq '') || ($unhome eq 'no_host')) {
8770: return 'error: unable to find a home server for '.$uname.
8771: ' in domain '.$udom;
8772: }
8773: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8774: &escape($upass),$unhome);
8775: unless ($reply eq 'ok') {
8776: return 'error: '.$reply;
8777: }
8778: $uhome=&homeserver($uname,$udom,'true');
8779: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8780: return 'error: unable verify users home machine.';
8781: }
8782: } # End of creation of new user
8783: # ---------------------------------------------------------------------- Add ID
8784: if ($uid) {
8785: $uid=~tr/A-Z/a-z/;
8786: my %uidhash=&idrget($udom,$uname);
8787: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8788: && (!$forceid)) {
8789: unless ($uid eq $uidhash{$uname}) {
8790: return 'error: user id "'.$uid.'" does not match '.
8791: 'current user id "'.$uidhash{$uname}.'".';
8792: }
8793: } else {
8794: &idput($udom,($uname => $uid));
8795: }
8796: }
8797: # -------------------------------------------------------------- Add names, etc
8798: my @tmp=&get('environment',
8799: ['firstname','middlename','lastname','generation','id',
8800: 'permanentemail','inststatus'],
8801: $udom,$uname);
8802: my (%names,%oldnames);
8803: if ($tmp[0] =~ m/^error:.*/) {
8804: %names=();
8805: } else {
8806: %names = @tmp;
8807: %oldnames = %names;
8808: }
8809: #
8810: # If name, email and/or uid are blank (e.g., because an uploaded file
8811: # of users did not contain them), do not overwrite existing values
8812: # unless field is in $candelete array ref.
8813: #
8814:
8815: my @fields = ('firstname','middlename','lastname','generation',
8816: 'permanentemail','id');
8817: my %newvalues;
8818: if (ref($candelete) eq 'ARRAY') {
8819: foreach my $field (@fields) {
8820: if (grep(/^\Q$field\E$/,@{$candelete})) {
8821: if ($field eq 'firstname') {
8822: $names{$field} = $first;
8823: } elsif ($field eq 'middlename') {
8824: $names{$field} = $middle;
8825: } elsif ($field eq 'lastname') {
8826: $names{$field} = $last;
8827: } elsif ($field eq 'generation') {
8828: $names{$field} = $gene;
8829: } elsif ($field eq 'permanentemail') {
8830: $names{$field} = $email;
8831: } elsif ($field eq 'id') {
8832: $names{$field} = $uid;
8833: }
8834: }
8835: }
8836: }
8837: if ($first) { $names{'firstname'} = $first; }
8838: if (defined($middle)) { $names{'middlename'} = $middle; }
8839: if ($last) { $names{'lastname'} = $last; }
8840: if (defined($gene)) { $names{'generation'} = $gene; }
8841: if ($email) {
8842: $email=~s/[^\w\@\.\-\,]//gs;
8843: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8844: }
8845: if ($uid) { $names{'id'} = $uid; }
8846: if (defined($inststatus)) {
8847: $names{'inststatus'} = '';
8848: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8849: if (ref($usertypes) eq 'HASH') {
8850: my @okstatuses;
8851: foreach my $item (split(/:/,$inststatus)) {
8852: if (defined($usertypes->{$item})) {
8853: push(@okstatuses,$item);
8854: }
8855: }
8856: if (@okstatuses) {
8857: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8858: }
8859: }
8860: }
8861: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
8862: $umode.', '.$first.', '.$middle.', '.
8863: $last.', '.$gene.', '.$email.', '.$inststatus;
8864: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
8865: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
8866: } else {
8867: $logmsg .= ' during self creation';
8868: }
8869: my $changed;
8870: if ($newuser) {
8871: $changed = 1;
8872: } else {
8873: foreach my $field (@fields) {
8874: if ($names{$field} ne $oldnames{$field}) {
8875: $changed = 1;
8876: last;
8877: }
8878: }
8879: }
8880: unless ($changed) {
8881: $logmsg = 'No changes in user information needed for: '.$logmsg;
8882: &logthis($logmsg);
8883: return 'ok';
8884: }
8885: my $reply = &put('environment', \%names, $udom,$uname);
8886: if ($reply ne 'ok') {
8887: return 'error: '.$reply;
8888: }
8889: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
8890: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
8891: }
8892: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
8893: &devalidate_cache_new('namescache',$uname.':'.$udom);
8894: $logmsg = 'Success modifying user '.$logmsg;
8895: &logthis($logmsg);
8896: return 'ok';
8897: }
8898:
8899: # -------------------------------------------------------------- Modify student
8900:
8901: sub modifystudent {
8902: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
8903: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
8904: $selfenroll,$context,$inststatus,$credits)=@_;
8905: if (!$cid) {
8906: unless ($cid=$env{'request.course.id'}) {
8907: return 'not_in_class';
8908: }
8909: }
8910: # --------------------------------------------------------------- Make the user
8911: my $reply=&modifyuser
8912: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
8913: $desiredhome,$email,$inststatus);
8914: unless ($reply eq 'ok') { return $reply; }
8915: # This will cause &modify_student_enrollment to get the uid from the
8916: # student's environment
8917: $uid = undef if (!$forceid);
8918: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
8919: $gene,$usec,$end,$start,$type,$locktype,
8920: $cid,$selfenroll,$context,$credits);
8921: return $reply;
8922: }
8923:
8924: sub modify_student_enrollment {
8925: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
8926: $locktype,$cid,$selfenroll,$context,$credits) = @_;
8927: my ($cdom,$cnum,$chome);
8928: if (!$cid) {
8929: unless ($cid=$env{'request.course.id'}) {
8930: return 'not_in_class';
8931: }
8932: $cdom=$env{'course.'.$cid.'.domain'};
8933: $cnum=$env{'course.'.$cid.'.num'};
8934: } else {
8935: ($cdom,$cnum)=split(/_/,$cid);
8936: }
8937: $chome=$env{'course.'.$cid.'.home'};
8938: if (!$chome) {
8939: $chome=&homeserver($cnum,$cdom);
8940: }
8941: if (!$chome) { return 'unknown_course'; }
8942: # Make sure the user exists
8943: my $uhome=&homeserver($uname,$udom);
8944: if (($uhome eq '') || ($uhome eq 'no_host')) {
8945: return 'error: no such user';
8946: }
8947: # Get student data if we were not given enough information
8948: if (!defined($first) || $first eq '' ||
8949: !defined($last) || $last eq '' ||
8950: !defined($uid) || $uid eq '' ||
8951: !defined($middle) || $middle eq '' ||
8952: !defined($gene) || $gene eq '') {
8953: # They did not supply us with enough data to enroll the student, so
8954: # we need to pick up more information.
8955: my %tmp = &get('environment',
8956: ['firstname','middlename','lastname', 'generation','id']
8957: ,$udom,$uname);
8958:
8959: #foreach my $key (keys(%tmp)) {
8960: # &logthis("key $key = ".$tmp{$key});
8961: #}
8962: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
8963: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
8964: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
8965: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
8966: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
8967: }
8968: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
8969: my $user = "$uname:$udom";
8970: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
8971: my $reply=cput('classlist',
8972: {$user =>
8973: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
8974: $cdom,$cnum);
8975: if (($reply eq 'ok') || ($reply eq 'delayed')) {
8976: &devalidate_getsection_cache($udom,$uname,$cid);
8977: } else {
8978: return 'error: '.$reply;
8979: }
8980: # Add student role to user
8981: my $uurl='/'.$cid;
8982: $uurl=~s/\_/\//g;
8983: if ($usec) {
8984: $uurl.='/'.$usec;
8985: }
8986: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
8987: $selfenroll,$context);
8988: if ($result ne 'ok') {
8989: if ($old_entry{$user} ne '') {
8990: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
8991: } else {
8992: $reply = &del('classlist',[$user],$cdom,$cnum);
8993: }
8994: }
8995: return $result;
8996: }
8997:
8998: sub format_name {
8999: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9000: my $name;
9001: if ($first ne 'lastname') {
9002: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9003: } else {
9004: if ($lastname=~/\S/) {
9005: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9006: $name=~s/\s+,/,/;
9007: } else {
9008: $name.= $firstname.' '.$middlename.' '.$generation;
9009: }
9010: }
9011: $name=~s/^\s+//;
9012: $name=~s/\s+$//;
9013: $name=~s/\s+/ /g;
9014: return $name;
9015: }
9016:
9017: # ------------------------------------------------- Write to course preferences
9018:
9019: sub writecoursepref {
9020: my ($courseid,%prefs)=@_;
9021: $courseid=~s/^\///;
9022: $courseid=~s/\_/\//g;
9023: my ($cdomain,$cnum)=split(/\//,$courseid);
9024: my $chome=homeserver($cnum,$cdomain);
9025: if (($chome eq '') || ($chome eq 'no_host')) {
9026: return 'error: no such course';
9027: }
9028: my $cstring='';
9029: foreach my $pref (keys(%prefs)) {
9030: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9031: }
9032: $cstring=~s/\&$//;
9033: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9034: }
9035:
9036: # ---------------------------------------------------------- Make/modify course
9037:
9038: sub createcourse {
9039: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9040: $course_owner,$crstype,$cnum,$context,$category)=@_;
9041: $url=&declutter($url);
9042: my $cid='';
9043: if ($context eq 'requestcourses') {
9044: my $can_create = 0;
9045: my ($ownername,$ownerdom) = split(':',$course_owner);
9046: if ($udom eq $ownerdom) {
9047: if (&usertools_access($ownername,$ownerdom,$category,undef,
9048: $context)) {
9049: $can_create = 1;
9050: }
9051: } else {
9052: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9053: $category);
9054: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9055: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9056: if (@curr > 0) {
9057: my @options = qw(approval validate autolimit);
9058: my $optregex = join('|',@options);
9059: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9060: $can_create = 1;
9061: }
9062: }
9063: }
9064: }
9065: if ($can_create) {
9066: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9067: unless (&allowed('ccc',$udom)) {
9068: return 'refused';
9069: }
9070: }
9071: } else {
9072: return 'refused';
9073: }
9074: } elsif (!&allowed('ccc',$udom)) {
9075: return 'refused';
9076: }
9077: # --------------------------------------------------------------- Get Unique ID
9078: my $uname;
9079: if ($cnum =~ /^$match_courseid$/) {
9080: my $chome=&homeserver($cnum,$udom,'true');
9081: if (($chome eq '') || ($chome eq 'no_host')) {
9082: $uname = $cnum;
9083: } else {
9084: $uname = &generate_coursenum($udom,$crstype);
9085: }
9086: } else {
9087: $uname = &generate_coursenum($udom,$crstype);
9088: }
9089: return $uname if ($uname =~ /^error/);
9090: # -------------------------------------------------- Check supplied server name
9091: if (!defined($course_server)) {
9092: if (defined(&domain($udom,'primary'))) {
9093: $course_server = &domain($udom,'primary');
9094: } else {
9095: $course_server = $env{'user.home'};
9096: }
9097: }
9098: my %host_servers =
9099: &Apache::lonnet::get_servers($udom,'library');
9100: unless ($host_servers{$course_server}) {
9101: return 'error: invalid home server for course: '.$course_server;
9102: }
9103: # ------------------------------------------------------------- Make the course
9104: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9105: $course_server);
9106: unless ($reply eq 'ok') { return 'error: '.$reply; }
9107: my $uhome=&homeserver($uname,$udom,'true');
9108: if (($uhome eq '') || ($uhome eq 'no_host')) {
9109: return 'error: no such course';
9110: }
9111: # ----------------------------------------------------------------- Course made
9112: # log existence
9113: my $now = time;
9114: my $newcourse = {
9115: $udom.'_'.$uname => {
9116: description => $description,
9117: inst_code => $inst_code,
9118: owner => $course_owner,
9119: type => $crstype,
9120: creator => $env{'user.name'}.':'.
9121: $env{'user.domain'},
9122: created => $now,
9123: context => $context,
9124: },
9125: };
9126: &courseidput($udom,$newcourse,$uhome,'notime');
9127: # set toplevel url
9128: my $topurl=$url;
9129: unless ($nonstandard) {
9130: # ------------------------------------------ For standard courses, make top url
9131: my $mapurl=&clutter($url);
9132: if ($mapurl eq '/res/') { $mapurl=''; }
9133: $env{'form.initmap'}=(<<ENDINITMAP);
9134: <map>
9135: <resource id="1" type="start"></resource>
9136: <resource id="2" src="$mapurl"></resource>
9137: <resource id="3" type="finish"></resource>
9138: <link index="1" from="1" to="2"></link>
9139: <link index="2" from="2" to="3"></link>
9140: </map>
9141: ENDINITMAP
9142: $topurl=&declutter(
9143: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
9144: );
9145: }
9146: # ----------------------------------------------------------- Write preferences
9147: &writecoursepref($udom.'_'.$uname,
9148: ('description' => $description,
9149: 'url' => $topurl,
9150: 'internal.creator' => $env{'user.name'}.':'.
9151: $env{'user.domain'},
9152: 'internal.created' => $now,
9153: 'internal.creationcontext' => $context)
9154: );
9155: return '/'.$udom.'/'.$uname;
9156: }
9157:
9158: # ------------------------------------------------------------------- Create ID
9159: sub generate_coursenum {
9160: my ($udom,$crstype) = @_;
9161: my $domdesc = &domain($udom);
9162: return 'error: invalid domain' if ($domdesc eq '');
9163: my $first;
9164: if ($crstype eq 'Community') {
9165: $first = '0';
9166: } else {
9167: $first = int(1+rand(9));
9168: }
9169: my $uname=$first.
9170: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9171: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9172: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9173: # ----------------------------------------------- Make sure that does not exist
9174: my $uhome=&homeserver($uname,$udom,'true');
9175: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9176: if ($crstype eq 'Community') {
9177: $first = '0';
9178: } else {
9179: $first = int(1+rand(9));
9180: }
9181: $uname=$first.
9182: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9183: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9184: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9185: $uhome=&homeserver($uname,$udom,'true');
9186: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9187: return 'error: unable to generate unique course-ID';
9188: }
9189: }
9190: return $uname;
9191: }
9192:
9193: sub is_course {
9194: my ($cdom, $cnum) = scalar(@_) == 1 ?
9195: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9196:
9197: return unless $cdom and $cnum;
9198:
9199: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9200: '.');
9201:
9202: return unless(exists($courses{$cdom.'_'.$cnum}));
9203: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9204: }
9205:
9206: sub store_userdata {
9207: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9208: my $result;
9209: if ($datakey ne '') {
9210: if (ref($storehash) eq 'HASH') {
9211: if ($udom eq '' || $uname eq '') {
9212: $udom = $env{'user.domain'};
9213: $uname = $env{'user.name'};
9214: }
9215: my $uhome=&homeserver($uname,$udom);
9216: if (($uhome eq '') || ($uhome eq 'no_host')) {
9217: $result = 'error: no_host';
9218: } else {
9219: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
9220: $storehash->{'host'} = $perlvar{'lonHostID'};
9221:
9222: my $namevalue='';
9223: foreach my $key (keys(%{$storehash})) {
9224: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
9225: }
9226: $namevalue=~s/\&$//;
9227: unless ($namespace eq 'courserequests') {
9228: $datakey = &escape($datakey);
9229: }
9230: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
9231: $namevalue,$uhome);
9232: }
9233: } else {
9234: $result = 'error: data to store was not a hash reference';
9235: }
9236: } else {
9237: $result= 'error: invalid requestkey';
9238: }
9239: return $result;
9240: }
9241:
9242: # ---------------------------------------------------------- Assign Custom Role
9243:
9244: sub assigncustomrole {
9245: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9246: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9247: $end,$start,$deleteflag,$selfenroll,$context);
9248: }
9249:
9250: # ----------------------------------------------------------------- Revoke Role
9251:
9252: sub revokerole {
9253: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9254: my $now=time;
9255: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9256: }
9257:
9258: # ---------------------------------------------------------- Revoke Custom Role
9259:
9260: sub revokecustomrole {
9261: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9262: my $now=time;
9263: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9264: $deleteflag,$selfenroll,$context);
9265: }
9266:
9267: # ------------------------------------------------------------ Disk usage
9268: sub diskusage {
9269: my ($udom,$uname,$directorypath,$getpropath)=@_;
9270: $directorypath =~ s/\/$//;
9271: my $listing=&reply('du2:'.&escape($directorypath).':'
9272: .&escape($getpropath).':'.&escape($uname).':'
9273: .&escape($udom),homeserver($uname,$udom));
9274: if ($listing eq 'unknown_cmd') {
9275: if ($getpropath) {
9276: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9277: }
9278: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9279: }
9280: return $listing;
9281: }
9282:
9283: sub is_locked {
9284: my ($file_name, $domain, $user, $which) = @_;
9285: my @check;
9286: my $is_locked;
9287: push (@check,$file_name);
9288: my %locked = &get('file_permissions',\@check,
9289: $env{'user.domain'},$env{'user.name'});
9290: my ($tmp)=keys(%locked);
9291: if ($tmp=~/^error:/) { undef(%locked); }
9292:
9293: if (ref($locked{$file_name}) eq 'ARRAY') {
9294: $is_locked = 'false';
9295: foreach my $entry (@{$locked{$file_name}}) {
9296: if (ref($entry) eq 'ARRAY') {
9297: $is_locked = 'true';
9298: if (ref($which) eq 'ARRAY') {
9299: push(@{$which},$entry);
9300: } else {
9301: last;
9302: }
9303: }
9304: }
9305: } else {
9306: $is_locked = 'false';
9307: }
9308: return $is_locked;
9309: }
9310:
9311: sub declutter_portfile {
9312: my ($file) = @_;
9313: $file =~ s{^(/portfolio/|portfolio/)}{/};
9314: return $file;
9315: }
9316:
9317: # ------------------------------------------------------------- Mark as Read Only
9318:
9319: sub mark_as_readonly {
9320: my ($domain,$user,$files,$what) = @_;
9321: my %current_permissions = &dump('file_permissions',$domain,$user);
9322: my ($tmp)=keys(%current_permissions);
9323: if ($tmp=~/^error:/) { undef(%current_permissions); }
9324: foreach my $file (@{$files}) {
9325: $file = &declutter_portfile($file);
9326: push(@{$current_permissions{$file}},$what);
9327: }
9328: &put('file_permissions',\%current_permissions,$domain,$user);
9329: return;
9330: }
9331:
9332: # ------------------------------------------------------------Save Selected Files
9333:
9334: sub save_selected_files {
9335: my ($user, $path, @files) = @_;
9336: my $filename = $user."savedfiles";
9337: my @other_files = &files_not_in_path($user, $path);
9338: open (OUT, '>'.$tmpdir.$filename);
9339: foreach my $file (@files) {
9340: print (OUT $env{'form.currentpath'}.$file."\n");
9341: }
9342: foreach my $file (@other_files) {
9343: print (OUT $file."\n");
9344: }
9345: close (OUT);
9346: return 'ok';
9347: }
9348:
9349: sub clear_selected_files {
9350: my ($user) = @_;
9351: my $filename = $user."savedfiles";
9352: open (OUT, '>'.LONCAPA::tempdir().$filename);
9353: print (OUT undef);
9354: close (OUT);
9355: return ("ok");
9356: }
9357:
9358: sub files_in_path {
9359: my ($user, $path) = @_;
9360: my $filename = $user."savedfiles";
9361: my %return_files;
9362: open (IN, '<'.LONCAPA::tempdir().$filename);
9363: while (my $line_in = <IN>) {
9364: chomp ($line_in);
9365: my @paths_and_file = split (m!/!, $line_in);
9366: my $file_part = pop (@paths_and_file);
9367: my $path_part = join ('/', @paths_and_file);
9368: $path_part.='/';
9369: my $path_and_file = $path_part.$file_part;
9370: if ($path_part eq $path) {
9371: $return_files{$file_part}= 'selected';
9372: }
9373: }
9374: close (IN);
9375: return (\%return_files);
9376: }
9377:
9378: # called in portfolio select mode, to show files selected NOT in current directory
9379: sub files_not_in_path {
9380: my ($user, $path) = @_;
9381: my $filename = $user."savedfiles";
9382: my @return_files;
9383: my $path_part;
9384: open(IN, '<'.LONCAPA::.$filename);
9385: while (my $line = <IN>) {
9386: #ok, I know it's clunky, but I want it to work
9387: my @paths_and_file = split(m|/|, $line);
9388: my $file_part = pop(@paths_and_file);
9389: chomp($file_part);
9390: my $path_part = join('/', @paths_and_file);
9391: $path_part .= '/';
9392: my $path_and_file = $path_part.$file_part;
9393: if ($path_part ne $path) {
9394: push(@return_files, ($path_and_file));
9395: }
9396: }
9397: close(OUT);
9398: return (@return_files);
9399: }
9400:
9401: #------------------------------Submitted/Handedback Portfolio Files Versioning
9402:
9403: sub portfiles_versioning {
9404: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
9405: my $portfolio_root = '/userfiles/portfolio';
9406: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
9407: foreach my $file (@{$portfiles}) {
9408: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
9409: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
9410: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
9411: my $getpropath = 1;
9412: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
9413: $stu_name,$getpropath);
9414: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
9415: my $new_answer =
9416: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
9417: if ($new_answer ne 'problem getting file') {
9418: push(@{$versioned_portfiles}, $directory.$new_answer);
9419: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
9420: [$symb,$env{'request.course.id'},'graded']);
9421: }
9422: }
9423: }
9424:
9425: sub get_next_version {
9426: my ($answer_name, $answer_ext, $dir_list) = @_;
9427: my $version;
9428: if (ref($dir_list) eq 'ARRAY') {
9429: foreach my $row (@{$dir_list}) {
9430: my ($file) = split(/\&/,$row,2);
9431: my ($file_name,$file_version,$file_ext) =
9432: &file_name_version_ext($file);
9433: if (($file_name eq $answer_name) &&
9434: ($file_ext eq $answer_ext)) {
9435: # gets here if filename and extension match,
9436: # regardless of version
9437: if ($file_version ne '') {
9438: # a versioned file is found so save it for later
9439: if ($file_version > $version) {
9440: $version = $file_version;
9441: }
9442: }
9443: }
9444: }
9445: }
9446: $version ++;
9447: return($version);
9448: }
9449:
9450: sub version_selected_portfile {
9451: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
9452: my ($answer_name,$answer_ver,$answer_ext) =
9453: &file_name_version_ext($file_name);
9454: my $new_answer;
9455: $env{'form.copy'} =
9456: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
9457: if($env{'form.copy'} eq '-1') {
9458: $new_answer = 'problem getting file';
9459: } else {
9460: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
9461: my $copy_result =
9462: &finishuserfileupload($stu_name,$domain,'copy',
9463: '/portfolio'.$directory.$new_answer);
9464: }
9465: undef($env{'form.copy'});
9466: return ($new_answer);
9467: }
9468:
9469: sub file_name_version_ext {
9470: my ($file)=@_;
9471: my @file_parts = split(/\./, $file);
9472: my ($name,$version,$ext);
9473: if (@file_parts > 1) {
9474: $ext=pop(@file_parts);
9475: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
9476: $version=pop(@file_parts);
9477: }
9478: $name=join('.',@file_parts);
9479: } else {
9480: $name=join('.',@file_parts);
9481: }
9482: return($name,$version,$ext);
9483: }
9484:
9485: #----------------------------------------------Get portfolio file permissions
9486:
9487: sub get_portfile_permissions {
9488: my ($domain,$user) = @_;
9489: my %current_permissions = &dump('file_permissions',$domain,$user);
9490: my ($tmp)=keys(%current_permissions);
9491: if ($tmp=~/^error:/) { undef(%current_permissions); }
9492: return \%current_permissions;
9493: }
9494:
9495: #---------------------------------------------Get portfolio file access controls
9496:
9497: sub get_access_controls {
9498: my ($current_permissions,$group,$file) = @_;
9499: my %access;
9500: my $real_file = $file;
9501: $file =~ s/\.meta$//;
9502: if (defined($file)) {
9503: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9504: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9505: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9506: }
9507: }
9508: } else {
9509: foreach my $key (keys(%{$current_permissions})) {
9510: if ($key =~ /\0accesscontrol$/) {
9511: if (defined($group)) {
9512: if ($key !~ m-^\Q$group\E/-) {
9513: next;
9514: }
9515: }
9516: my ($fullpath) = split(/\0/,$key);
9517: if (ref($$current_permissions{$key}) eq 'HASH') {
9518: foreach my $control (keys(%{$$current_permissions{$key}})) {
9519: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9520: }
9521: }
9522: }
9523: }
9524: }
9525: return %access;
9526: }
9527:
9528: sub modify_access_controls {
9529: my ($file_name,$changes,$domain,$user)=@_;
9530: my ($outcome,$deloutcome);
9531: my %store_permissions;
9532: my %new_values;
9533: my %new_control;
9534: my %translation;
9535: my @deletions = ();
9536: my $now = time;
9537: if (exists($$changes{'activate'})) {
9538: if (ref($$changes{'activate'}) eq 'HASH') {
9539: my @newitems = sort(keys(%{$$changes{'activate'}}));
9540: my $numnew = scalar(@newitems);
9541: for (my $i=0; $i<$numnew; $i++) {
9542: my $newkey = $newitems[$i];
9543: my $newid = &Apache::loncommon::get_cgi_id();
9544: if ($newkey =~ /^\d+:/) {
9545: $newkey =~ s/^(\d+)/$newid/;
9546: $translation{$1} = $newid;
9547: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9548: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9549: $translation{$1} = $newid;
9550: }
9551: $new_values{$file_name."\0".$newkey} =
9552: $$changes{'activate'}{$newitems[$i]};
9553: $new_control{$newkey} = $now;
9554: }
9555: }
9556: }
9557: my %todelete;
9558: my %changed_items;
9559: foreach my $action ('delete','update') {
9560: if (exists($$changes{$action})) {
9561: if (ref($$changes{$action}) eq 'HASH') {
9562: foreach my $key (keys(%{$$changes{$action}})) {
9563: my ($itemnum) = ($key =~ /^([^:]+):/);
9564: if ($action eq 'delete') {
9565: $todelete{$itemnum} = 1;
9566: } else {
9567: $changed_items{$itemnum} = $key;
9568: }
9569: }
9570: }
9571: }
9572: }
9573: # get lock on access controls for file.
9574: my $lockhash = {
9575: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9576: ':'.$env{'user.domain'},
9577: };
9578: my $tries = 0;
9579: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9580:
9581: while (($gotlock ne 'ok') && $tries < 10) {
9582: $tries ++;
9583: sleep(0.1);
9584: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9585: }
9586: if ($gotlock eq 'ok') {
9587: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9588: my ($tmp)=keys(%curr_permissions);
9589: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9590: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9591: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9592: if (ref($curr_controls) eq 'HASH') {
9593: foreach my $control_item (keys(%{$curr_controls})) {
9594: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9595: if (defined($todelete{$itemnum})) {
9596: push(@deletions,$file_name."\0".$control_item);
9597: } else {
9598: if (defined($changed_items{$itemnum})) {
9599: $new_control{$changed_items{$itemnum}} = $now;
9600: push(@deletions,$file_name."\0".$control_item);
9601: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9602: } else {
9603: $new_control{$control_item} = $$curr_controls{$control_item};
9604: }
9605: }
9606: }
9607: }
9608: }
9609: my ($group);
9610: if (&is_course($domain,$user)) {
9611: ($group,my $file) = split(/\//,$file_name,2);
9612: }
9613: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9614: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9615: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9616: # remove lock
9617: my @del_lock = ($file_name."\0".'locked_access_records');
9618: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9619: my $sqlresult =
9620: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9621: $group);
9622: } else {
9623: $outcome = "error: could not obtain lockfile\n";
9624: }
9625: return ($outcome,$deloutcome,\%new_values,\%translation);
9626: }
9627:
9628: sub make_public_indefinitely {
9629: my (@requrl) = @_;
9630: return &automated_portfile_access('public',\@requrl);
9631: }
9632:
9633: sub automated_portfile_access {
9634: my ($accesstype,$addsref,$delsref,$info) = @_;
9635: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
9636: return 'invalid';
9637: }
9638: my %urls;
9639: if (ref($addsref) eq 'ARRAY') {
9640: foreach my $requrl (@{$addsref}) {
9641: if (&is_portfolio_url($requrl)) {
9642: unless (exists($urls{$requrl})) {
9643: $urls{$requrl} = 'add';
9644: }
9645: }
9646: }
9647: }
9648: if (ref($delsref) eq 'ARRAY') {
9649: foreach my $requrl (@{$delsref}) {
9650: if (&is_portfolio_url($requrl)) {
9651: unless (exists($urls{$requrl})) {
9652: $urls{$requrl} = 'delete';
9653: }
9654: }
9655: }
9656: }
9657: unless (keys(%urls)) {
9658: return 'invalid';
9659: }
9660: my $ip;
9661: if ($accesstype eq 'ip') {
9662: if (ref($info) eq 'HASH') {
9663: if ($info->{'ip'} ne '') {
9664: $ip = $info->{'ip'};
9665: }
9666: }
9667: if ($ip eq '') {
9668: return 'invalid';
9669: }
9670: }
9671: my $errors;
9672: my $now = time;
9673: my %current_perms;
9674: foreach my $requrl (sort(keys(%urls))) {
9675: my $action;
9676: if ($urls{$requrl} eq 'add') {
9677: $action = 'activate';
9678: } else {
9679: $action = 'none';
9680: }
9681: my $aclnum = 0;
9682: my (undef,$udom,$unum,$file_name,$group) =
9683: &parse_portfolio_url($requrl);
9684: unless (exists($current_perms{$unum.':'.$udom})) {
9685: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
9686: }
9687: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
9688: $group,$file_name);
9689: foreach my $key (keys(%{$access_controls{$file_name}})) {
9690: my ($num,$scope,$end,$start) =
9691: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9692: if ($scope eq $accesstype) {
9693: if (($start <= $now) && ($end == 0)) {
9694: if ($accesstype eq 'ip') {
9695: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
9696: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
9697: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
9698: if ($urls{$requrl} eq 'add') {
9699: $action = 'none';
9700: last;
9701: } else {
9702: $action = 'delete';
9703: $aclnum = $num;
9704: last;
9705: }
9706: }
9707: }
9708: }
9709: } elsif ($accesstype eq 'public') {
9710: if ($urls{$requrl} eq 'add') {
9711: $action = 'none';
9712: last;
9713: } else {
9714: $action = 'delete';
9715: $aclnum = $num;
9716: last;
9717: }
9718: }
9719: } elsif ($accesstype eq 'public') {
9720: $action = 'update';
9721: $aclnum = $num;
9722: last;
9723: }
9724: }
9725: }
9726: if ($action eq 'none') {
9727: next;
9728: } else {
9729: my %changes;
9730: my $newend = 0;
9731: my $newstart = $now;
9732: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
9733: $changes{$action}{$newkey} = {
9734: type => $accesstype,
9735: time => {
9736: start => $newstart,
9737: end => $newend,
9738: },
9739: };
9740: if ($accesstype eq 'ip') {
9741: $changes{$action}{$newkey}{'ip'} = [$ip];
9742: }
9743: my ($outcome,$deloutcome,$new_values,$translation) =
9744: &modify_access_controls($file_name,\%changes,$udom,$unum);
9745: unless ($outcome eq 'ok') {
9746: $errors .= $outcome.' ';
9747: }
9748: }
9749: }
9750: if ($errors) {
9751: $errors =~ s/\s$//;
9752: return $errors;
9753: } else {
9754: return 'ok';
9755: }
9756: }
9757:
9758: #------------------------------------------------------Get Marked as Read Only
9759:
9760: sub get_marked_as_readonly {
9761: my ($domain,$user,$what,$group) = @_;
9762: my $current_permissions = &get_portfile_permissions($domain,$user);
9763: my @readonly_files;
9764: my $cmp1=$what;
9765: if (ref($what)) { $cmp1=join('',@{$what}) };
9766: while (my ($file_name,$value) = each(%{$current_permissions})) {
9767: if (defined($group)) {
9768: if ($file_name !~ m-^\Q$group\E/-) {
9769: next;
9770: }
9771: }
9772: if (ref($value) eq "ARRAY"){
9773: foreach my $stored_what (@{$value}) {
9774: my $cmp2=$stored_what;
9775: if (ref($stored_what) eq 'ARRAY') {
9776: $cmp2=join('',@{$stored_what});
9777: }
9778: if ($cmp1 eq $cmp2) {
9779: push(@readonly_files, $file_name);
9780: last;
9781: } elsif (!defined($what)) {
9782: push(@readonly_files, $file_name);
9783: last;
9784: }
9785: }
9786: }
9787: }
9788: return @readonly_files;
9789: }
9790: #-----------------------------------------------------------Get Marked as Read Only Hash
9791:
9792: sub get_marked_as_readonly_hash {
9793: my ($current_permissions,$group,$what) = @_;
9794: my %readonly_files;
9795: while (my ($file_name,$value) = each(%{$current_permissions})) {
9796: if (defined($group)) {
9797: if ($file_name !~ m-^\Q$group\E/-) {
9798: next;
9799: }
9800: }
9801: if (ref($value) eq "ARRAY"){
9802: foreach my $stored_what (@{$value}) {
9803: if (ref($stored_what) eq 'ARRAY') {
9804: foreach my $lock_descriptor(@{$stored_what}) {
9805: if ($lock_descriptor eq 'graded') {
9806: $readonly_files{$file_name} = 'graded';
9807: } elsif ($lock_descriptor eq 'handback') {
9808: $readonly_files{$file_name} = 'handback';
9809: } else {
9810: if (!exists($readonly_files{$file_name})) {
9811: $readonly_files{$file_name} = 'locked';
9812: }
9813: }
9814: }
9815: }
9816: }
9817: }
9818: }
9819: return %readonly_files;
9820: }
9821: # ------------------------------------------------------------ Unmark as Read Only
9822:
9823: sub unmark_as_readonly {
9824: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9825: # for portfolio submissions, $what contains [$symb,$crsid]
9826: my ($domain,$user,$what,$file_name,$group) = @_;
9827: $file_name = &declutter_portfile($file_name);
9828: my $symb_crs = $what;
9829: if (ref($what)) { $symb_crs=join('',@$what); }
9830: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9831: my ($tmp)=keys(%current_permissions);
9832: if ($tmp=~/^error:/) { undef(%current_permissions); }
9833: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9834: foreach my $file (@readonly_files) {
9835: my $clean_file = &declutter_portfile($file);
9836: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9837: my $current_locks = $current_permissions{$file};
9838: my @new_locks;
9839: my @del_keys;
9840: if (ref($current_locks) eq "ARRAY"){
9841: foreach my $locker (@{$current_locks}) {
9842: my $compare=$locker;
9843: if (ref($locker) eq 'ARRAY') {
9844: $compare=join('',@{$locker});
9845: if ($compare ne $symb_crs) {
9846: push(@new_locks, $locker);
9847: }
9848: }
9849: }
9850: if (scalar(@new_locks) > 0) {
9851: $current_permissions{$file} = \@new_locks;
9852: } else {
9853: push(@del_keys, $file);
9854: &del('file_permissions',\@del_keys, $domain, $user);
9855: delete($current_permissions{$file});
9856: }
9857: }
9858: }
9859: &put('file_permissions',\%current_permissions,$domain,$user);
9860: return;
9861: }
9862:
9863: # ------------------------------------------------------------ Directory lister
9864:
9865: sub dirlist {
9866: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
9867: $uri=~s/^\///;
9868: $uri=~s/\/$//;
9869: my ($udom, $uname);
9870: if ($getuserdir) {
9871: $udom = $userdomain;
9872: $uname = $username;
9873: } else {
9874: (undef,$udom,$uname)=split(/\//,$uri);
9875: if(defined($userdomain)) {
9876: $udom = $userdomain;
9877: }
9878: if(defined($username)) {
9879: $uname = $username;
9880: }
9881: }
9882: my ($dirRoot,$listing,@listing_results);
9883:
9884: $dirRoot = $perlvar{'lonDocRoot'};
9885: if (defined($getpropath)) {
9886: $dirRoot = &propath($udom,$uname);
9887: $dirRoot =~ s/\/$//;
9888: } elsif (defined($getuserdir)) {
9889: my $subdir=$uname.'__';
9890: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
9891: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
9892: ."/$udom/$subdir/$uname";
9893: } elsif (defined($alternateRoot)) {
9894: $dirRoot = $alternateRoot;
9895: }
9896:
9897: if($udom) {
9898: if($uname) {
9899: my $uhome = &homeserver($uname,$udom);
9900: if ($uhome eq 'no_host') {
9901: return ([],'no_host');
9902: }
9903: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
9904: .$getuserdir.':'.&escape($dirRoot)
9905: .':'.&escape($uname).':'.&escape($udom),$uhome);
9906: if ($listing eq 'unknown_cmd') {
9907: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
9908: } else {
9909: @listing_results = map { &unescape($_); } split(/:/,$listing);
9910: }
9911: if ($listing eq 'unknown_cmd') {
9912: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
9913: @listing_results = split(/:/,$listing);
9914: } else {
9915: @listing_results = map { &unescape($_); } split(/:/,$listing);
9916: }
9917: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9918: ($listing eq 'rejected') || ($listing eq 'refused') ||
9919: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9920: return ([],$listing);
9921: } else {
9922: return (\@listing_results);
9923: }
9924: } elsif(!$alternateRoot) {
9925: my (%allusers,%listerror);
9926: my %servers = &get_servers($udom,'library');
9927: foreach my $tryserver (keys(%servers)) {
9928: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
9929: &escape($udom),$tryserver);
9930: if ($listing eq 'unknown_cmd') {
9931: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
9932: $udom, $tryserver);
9933: } else {
9934: @listing_results = map { &unescape($_); } split(/:/,$listing);
9935: }
9936: if ($listing eq 'unknown_cmd') {
9937: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
9938: $udom, $tryserver);
9939: @listing_results = split(/:/,$listing);
9940: } else {
9941: @listing_results =
9942: map { &unescape($_); } split(/:/,$listing);
9943: }
9944: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
9945: ($listing eq 'rejected') || ($listing eq 'refused') ||
9946: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
9947: $listerror{$tryserver} = $listing;
9948: } else {
9949: foreach my $line (@listing_results) {
9950: my ($entry) = split(/&/,$line,2);
9951: $allusers{$entry} = 1;
9952: }
9953: }
9954: }
9955: my @alluserslist=();
9956: foreach my $user (sort(keys(%allusers))) {
9957: push(@alluserslist,$user.'&user');
9958: }
9959: return (\@alluserslist);
9960: } else {
9961: return ([],'missing username');
9962: }
9963: } elsif(!defined($getpropath)) {
9964: my $path = $perlvar{'lonDocRoot'}.'/res/';
9965: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
9966: return (\@all_domains);
9967: } else {
9968: return ([],'missing domain');
9969: }
9970: }
9971:
9972: # --------------------------------------------- GetFileTimestamp
9973: # This function utilizes dirlist and returns the date stamp for
9974: # when it was last modified. It will also return an error of -1
9975: # if an error occurs
9976:
9977: sub GetFileTimestamp {
9978: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
9979: $studentDomain = &LONCAPA::clean_domain($studentDomain);
9980: $studentName = &LONCAPA::clean_username($studentName);
9981: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
9982: undef,$getuserdir);
9983: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
9984: return -1;
9985: }
9986: if (ref($fileref) eq 'ARRAY') {
9987: my @stats = split('&',$fileref->[0]);
9988: # @stats contains first the filename, then the stat output
9989: return $stats[10]; # so this is 10 instead of 9.
9990: } else {
9991: return -1;
9992: }
9993: }
9994:
9995: sub stat_file {
9996: my ($uri) = @_;
9997: $uri = &clutter_with_no_wrapper($uri);
9998:
9999: my ($udom,$uname,$file);
10000: if ($uri =~ m-^/(uploaded|editupload)/-) {
10001: ($udom,$uname,$file) =
10002: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10003: $file = 'userfiles/'.$file;
10004: }
10005: if ($uri =~ m-^/res/-) {
10006: ($udom,$uname) =
10007: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10008: $file = $uri;
10009: }
10010:
10011: if (!$udom || !$uname || !$file) {
10012: # unable to handle the uri
10013: return ();
10014: }
10015: my $getpropath;
10016: if ($file =~ /^userfiles\//) {
10017: $getpropath = 1;
10018: }
10019: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10020: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10021: return ();
10022: } else {
10023: if (ref($listref) eq 'ARRAY') {
10024: my @stats = split('&',$listref->[0]);
10025: shift(@stats); #filename is first
10026: return @stats;
10027: }
10028: }
10029: return ();
10030: }
10031:
10032: # -------------------------------------------------------- Value of a Condition
10033:
10034: # gets the value of a specific preevaluated condition
10035: # stored in the string $env{user.state.<cid>}
10036: # or looks up a condition reference in the bighash and if if hasn't
10037: # already been evaluated recurses into docondval to get the value of
10038: # the condition, then memoizing it to
10039: # $env{user.state.<cid>.<condition>}
10040: sub directcondval {
10041: my $number=shift;
10042: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
10043: &Apache::lonuserstate::evalstate();
10044: }
10045: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
10046: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
10047: } elsif ($number =~ /^_/) {
10048: my $sub_condition;
10049: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10050: &GDBM_READER(),0640)) {
10051: $sub_condition=$bighash{'conditions'.$number};
10052: untie(%bighash);
10053: }
10054: my $value = &docondval($sub_condition);
10055: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
10056: return $value;
10057: }
10058: if ($env{'user.state.'.$env{'request.course.id'}}) {
10059: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
10060: } else {
10061: return 2;
10062: }
10063: }
10064:
10065: # get the collection of conditions for this resource
10066: sub condval {
10067: my $condidx=shift;
10068: my $allpathcond='';
10069: foreach my $cond (split(/\|/,$condidx)) {
10070: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
10071: $allpathcond.=
10072: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
10073: }
10074: }
10075: $allpathcond=~s/\|$//;
10076: return &docondval($allpathcond);
10077: }
10078:
10079: #evaluates an expression of conditions
10080: sub docondval {
10081: my ($allpathcond) = @_;
10082: my $result=0;
10083: if ($env{'request.course.id'}
10084: && defined($allpathcond)) {
10085: my $operand='|';
10086: my @stack;
10087: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
10088: if ($chunk eq '(') {
10089: push @stack,($operand,$result);
10090: } elsif ($chunk eq ')') {
10091: my $before=pop @stack;
10092: if (pop @stack eq '&') {
10093: $result=$result>$before?$before:$result;
10094: } else {
10095: $result=$result>$before?$result:$before;
10096: }
10097: } elsif (($chunk eq '&') || ($chunk eq '|')) {
10098: $operand=$chunk;
10099: } else {
10100: my $new=directcondval($chunk);
10101: if ($operand eq '&') {
10102: $result=$result>$new?$new:$result;
10103: } else {
10104: $result=$result>$new?$result:$new;
10105: }
10106: }
10107: }
10108: }
10109: return $result;
10110: }
10111:
10112: # ---------------------------------------------------- Devalidate courseresdata
10113:
10114: sub devalidatecourseresdata {
10115: my ($coursenum,$coursedomain)=@_;
10116: my $hashid=$coursenum.':'.$coursedomain;
10117: &devalidate_cache_new('courseres',$hashid);
10118: }
10119:
10120:
10121: # --------------------------------------------------- Course Resourcedata Query
10122: #
10123: # Parameters:
10124: # $coursenum - Number of the course.
10125: # $coursedomain - Domain at which the course was created.
10126: # Returns:
10127: # A hash of the course parameters along (I think) with timestamps
10128: # and version info.
10129:
10130: sub get_courseresdata {
10131: my ($coursenum,$coursedomain)=@_;
10132: my $coursehom=&homeserver($coursenum,$coursedomain);
10133: my $hashid=$coursenum.':'.$coursedomain;
10134: my ($result,$cached)=&is_cached_new('courseres',$hashid);
10135: my %dumpreply;
10136: unless (defined($cached)) {
10137: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
10138: $result=\%dumpreply;
10139: my ($tmp) = keys(%dumpreply);
10140: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10141: &do_cache_new('courseres',$hashid,$result,600);
10142: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
10143: return $tmp;
10144: } elsif ($tmp =~ /^(error)/) {
10145: $result=undef;
10146: &do_cache_new('courseres',$hashid,$result,600);
10147: }
10148: }
10149: return $result;
10150: }
10151:
10152: sub devalidateuserresdata {
10153: my ($uname,$udom)=@_;
10154: my $hashid="$udom:$uname";
10155: &devalidate_cache_new('userres',$hashid);
10156: }
10157:
10158: sub get_userresdata {
10159: my ($uname,$udom)=@_;
10160: #most student don\'t have any data set, check if there is some data
10161: if (&EXT_cache_status($udom,$uname)) { return undef; }
10162:
10163: my $hashid="$udom:$uname";
10164: my ($result,$cached)=&is_cached_new('userres',$hashid);
10165: if (!defined($cached)) {
10166: my %resourcedata=&dump('resourcedata',$udom,$uname);
10167: $result=\%resourcedata;
10168: &do_cache_new('userres',$hashid,$result,600);
10169: }
10170: my ($tmp)=keys(%$result);
10171: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
10172: return $result;
10173: }
10174: #error 2 occurs when the .db doesn't exist
10175: if ($tmp!~/error: 2 /) {
10176: &logthis("<font color=\"blue\">WARNING:".
10177: " Trying to get resource data for ".
10178: $uname." at ".$udom.": ".
10179: $tmp."</font>");
10180: } elsif ($tmp=~/error: 2 /) {
10181: #&EXT_cache_set($udom,$uname);
10182: &do_cache_new('userres',$hashid,undef,600);
10183: undef($tmp); # not really an error so don't send it back
10184: }
10185: return $tmp;
10186: }
10187: #----------------------------------------------- resdata - return resource data
10188: # Purpose:
10189: # Return resource data for either users or for a course.
10190: # Parameters:
10191: # $name - Course/user name.
10192: # $domain - Name of the domain the user/course is registered on.
10193: # $type - Type of thing $name is (must be 'course' or 'user'
10194: # @which - Array of names of resources desired.
10195: # Returns:
10196: # The value of the first reasource in @which that is found in the
10197: # resource hash.
10198: # Exceptional Conditions:
10199: # If the $type passed in is not valid (not the string 'course' or
10200: # 'user', an undefined reference is returned.
10201: # If none of the resources are found, an undef is returned
10202: sub resdata {
10203: my ($name,$domain,$type,@which)=@_;
10204: my $result;
10205: if ($type eq 'course') {
10206: $result=&get_courseresdata($name,$domain);
10207: } elsif ($type eq 'user') {
10208: $result=&get_userresdata($name,$domain);
10209: }
10210: if (!ref($result)) { return $result; }
10211: foreach my $item (@which) {
10212: if (defined($result->{$item->[0]})) {
10213: return [$result->{$item->[0]},$item->[1]];
10214: }
10215: }
10216: return undef;
10217: }
10218:
10219: sub get_numsuppfiles {
10220: my ($cnum,$cdom,$ignorecache)=@_;
10221: my $hashid=$cnum.':'.$cdom;
10222: my ($suppcount,$cached);
10223: unless ($ignorecache) {
10224: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
10225: }
10226: unless (defined($cached)) {
10227: my $chome=&homeserver($cnum,$cdom);
10228: unless ($chome eq 'no_host') {
10229: ($suppcount,my $errors) = (0,0);
10230: my $suppmap = 'supplemental.sequence';
10231: ($suppcount,$errors) =
10232: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
10233: }
10234: &do_cache_new('suppcount',$hashid,$suppcount,600);
10235: }
10236: return $suppcount;
10237: }
10238:
10239: #
10240: # EXT resource caching routines
10241: #
10242:
10243: sub clear_EXT_cache_status {
10244: &delenv('cache.EXT.');
10245: }
10246:
10247: sub EXT_cache_status {
10248: my ($target_domain,$target_user) = @_;
10249: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10250: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
10251: # We know already the user has no data
10252: return 1;
10253: } else {
10254: return 0;
10255: }
10256: }
10257:
10258: sub EXT_cache_set {
10259: my ($target_domain,$target_user) = @_;
10260: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10261: #&appenv({$cachename => time});
10262: }
10263:
10264: # --------------------------------------------------------- Value of a Variable
10265: sub EXT {
10266:
10267: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
10268: unless ($varname) { return ''; }
10269: #get real user name/domain, courseid and symb
10270: my $courseid;
10271: my $publicuser;
10272: if ($symbparm) {
10273: $symbparm=&get_symb_from_alias($symbparm);
10274: }
10275: if (!($uname && $udom)) {
10276: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
10277: if (!$symbparm) { $symbparm=$cursymb; }
10278: } else {
10279: $courseid=$env{'request.course.id'};
10280: }
10281: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
10282: my $rest;
10283: if (defined($therest[0])) {
10284: $rest=join('.',@therest);
10285: } else {
10286: $rest='';
10287: }
10288:
10289: my $qualifierrest=$qualifier;
10290: if ($rest) { $qualifierrest.='.'.$rest; }
10291: my $spacequalifierrest=$space;
10292: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
10293: if ($realm eq 'user') {
10294: # --------------------------------------------------------------- user.resource
10295: if ($space eq 'resource') {
10296: if ( (defined($Apache::lonhomework::parsing_a_problem)
10297: || defined($Apache::lonhomework::parsing_a_task))
10298: &&
10299: ($symbparm eq &symbread()) ) {
10300: # if we are in the middle of processing the resource the
10301: # get the value we are planning on committing
10302: if (defined($Apache::lonhomework::results{$qualifierrest})) {
10303: return $Apache::lonhomework::results{$qualifierrest};
10304: } else {
10305: return $Apache::lonhomework::history{$qualifierrest};
10306: }
10307: } else {
10308: my %restored;
10309: if ($publicuser || $env{'request.state'} eq 'construct') {
10310: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
10311: } else {
10312: %restored=&restore($symbparm,$courseid,$udom,$uname);
10313: }
10314: return $restored{$qualifierrest};
10315: }
10316: # ----------------------------------------------------------------- user.access
10317: } elsif ($space eq 'access') {
10318: # FIXME - not supporting calls for a specific user
10319: return &allowed($qualifier,$rest);
10320: # ------------------------------------------ user.preferences, user.environment
10321: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
10322: if (($uname eq $env{'user.name'}) &&
10323: ($udom eq $env{'user.domain'})) {
10324: return $env{join('.',('environment',$qualifierrest))};
10325: } else {
10326: my %returnhash;
10327: if (!$publicuser) {
10328: %returnhash=&userenvironment($udom,$uname,
10329: $qualifierrest);
10330: }
10331: return $returnhash{$qualifierrest};
10332: }
10333: # ----------------------------------------------------------------- user.course
10334: } elsif ($space eq 'course') {
10335: # FIXME - not supporting calls for a specific user
10336: return $env{join('.',('request.course',$qualifier))};
10337: # ------------------------------------------------------------------- user.role
10338: } elsif ($space eq 'role') {
10339: # FIXME - not supporting calls for a specific user
10340: my ($role,$where)=split(/\./,$env{'request.role'});
10341: if ($qualifier eq 'value') {
10342: return $role;
10343: } elsif ($qualifier eq 'extent') {
10344: return $where;
10345: }
10346: # ----------------------------------------------------------------- user.domain
10347: } elsif ($space eq 'domain') {
10348: return $udom;
10349: # ------------------------------------------------------------------- user.name
10350: } elsif ($space eq 'name') {
10351: return $uname;
10352: # ---------------------------------------------------- Any other user namespace
10353: } else {
10354: my %reply;
10355: if (!$publicuser) {
10356: %reply=&get($space,[$qualifierrest],$udom,$uname);
10357: }
10358: return $reply{$qualifierrest};
10359: }
10360: } elsif ($realm eq 'query') {
10361: # ---------------------------------------------- pull stuff out of query string
10362: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
10363: [$spacequalifierrest]);
10364: return $env{'form.'.$spacequalifierrest};
10365: } elsif ($realm eq 'request') {
10366: # ------------------------------------------------------------- request.browser
10367: if ($space eq 'browser') {
10368: return $env{'browser.'.$qualifier};
10369: # ------------------------------------------------------------ request.filename
10370: } else {
10371: return $env{'request.'.$spacequalifierrest};
10372: }
10373: } elsif ($realm eq 'course') {
10374: # ---------------------------------------------------------- course.description
10375: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
10376: } elsif ($realm eq 'resource') {
10377:
10378: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
10379: if (!$symbparm) { $symbparm=&symbread(); }
10380: }
10381:
10382: if ($qualifier eq '') {
10383: if ($space eq 'title') {
10384: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
10385: return &gettitle($symbparm);
10386: }
10387:
10388: if ($space eq 'map') {
10389: my ($map) = &decode_symb($symbparm);
10390: return &symbread($map);
10391: }
10392: if ($space eq 'maptitle') {
10393: my ($map) = &decode_symb($symbparm);
10394: return &gettitle($map);
10395: }
10396: if ($space eq 'filename') {
10397: if ($symbparm) {
10398: return &clutter((&decode_symb($symbparm))[2]);
10399: }
10400: return &hreflocation('',$env{'request.filename'});
10401: }
10402:
10403: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
10404: if ($space eq 'visibleparts') {
10405: my $navmap = Apache::lonnavmaps::navmap->new();
10406: my $item;
10407: if (ref($navmap)) {
10408: my $res = $navmap->getBySymb($symbparm);
10409: my $parts = $res->parts();
10410: if (ref($parts) eq 'ARRAY') {
10411: $item = join(',',@{$parts});
10412: }
10413: undef($navmap);
10414: }
10415: return $item;
10416: }
10417: }
10418: }
10419:
10420: my ($section, $group, @groups);
10421: my ($courselevelm,$courselevel);
10422: if (($courseid eq '') && ($cid)) {
10423: $courseid = $cid;
10424: }
10425: if (($symbparm && $courseid) &&
10426: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
10427:
10428: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
10429:
10430: # ----------------------------------------------------- Cascading lookup scheme
10431: my $symbp=$symbparm;
10432: my $mapp=&deversion((&decode_symb($symbp))[0]);
10433:
10434: my $symbparm=$symbp.'.'.$spacequalifierrest;
10435: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
10436:
10437: if (($env{'user.name'} eq $uname) &&
10438: ($env{'user.domain'} eq $udom)) {
10439: $section=$env{'request.course.sec'};
10440: @groups = split(/:/,$env{'request.course.groups'});
10441: @groups=&sort_course_groups($courseid,@groups);
10442: } else {
10443: if (! defined($usection)) {
10444: $section=&getsection($udom,$uname,$courseid);
10445: } else {
10446: $section = $usection;
10447: }
10448: @groups = &get_users_groups($udom,$uname,$courseid);
10449: }
10450:
10451: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
10452: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
10453: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
10454:
10455: $courselevel=$courseid.'.'.$spacequalifierrest;
10456: my $courselevelr=$courseid.'.'.$symbparm;
10457: $courselevelm=$courseid.'.'.$mapparm;
10458:
10459: # ----------------------------------------------------------- first, check user
10460:
10461: my $userreply=&resdata($uname,$udom,'user',
10462: ([$courselevelr,'resource'],
10463: [$courselevelm,'map' ],
10464: [$courselevel, 'course' ]));
10465: if (defined($userreply)) { return &get_reply($userreply); }
10466:
10467: # ------------------------------------------------ second, check some of course
10468: my $coursereply;
10469: if (@groups > 0) {
10470: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
10471: $mapparm,$spacequalifierrest);
10472: if (defined($coursereply)) { return &get_reply($coursereply); }
10473: }
10474:
10475: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10476: $env{'course.'.$courseid.'.domain'},
10477: 'course',
10478: ([$seclevelr, 'resource'],
10479: [$seclevelm, 'map' ],
10480: [$seclevel, 'course' ],
10481: [$courselevelr,'resource']));
10482: if (defined($coursereply)) { return &get_reply($coursereply); }
10483:
10484: # ------------------------------------------------------ third, check map parms
10485: my %parmhash=();
10486: my $thisparm='';
10487: if (tie(%parmhash,'GDBM_File',
10488: $env{'request.course.fn'}.'_parms.db',
10489: &GDBM_READER(),0640)) {
10490: $thisparm=$parmhash{$symbparm};
10491: untie(%parmhash);
10492: }
10493: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
10494: }
10495: # ------------------------------------------ fourth, look in resource metadata
10496:
10497: $spacequalifierrest=~s/\./\_/;
10498: my $filename;
10499: if (!$symbparm) { $symbparm=&symbread(); }
10500: if ($symbparm) {
10501: $filename=(&decode_symb($symbparm))[2];
10502: } else {
10503: $filename=$env{'request.filename'};
10504: }
10505: my $metadata=&metadata($filename,$spacequalifierrest);
10506: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10507: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
10508: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10509:
10510: # ---------------------------------------------- fourth, look in rest of course
10511: if ($symbparm && defined($courseid) &&
10512: $courseid eq $env{'request.course.id'}) {
10513: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10514: $env{'course.'.$courseid.'.domain'},
10515: 'course',
10516: ([$courselevelm,'map' ],
10517: [$courselevel, 'course']));
10518: if (defined($coursereply)) { return &get_reply($coursereply); }
10519: }
10520: # ------------------------------------------------------------------ Cascade up
10521: unless ($space eq '0') {
10522: my @parts=split(/_/,$space);
10523: my $id=pop(@parts);
10524: my $part=join('_',@parts);
10525: if ($part eq '') { $part='0'; }
10526: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
10527: $symbparm,$udom,$uname,$section,1);
10528: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
10529: }
10530: if ($recurse) { return undef; }
10531: my $pack_def=&packages_tab_default($filename,$varname);
10532: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
10533: # ---------------------------------------------------- Any other user namespace
10534: } elsif ($realm eq 'environment') {
10535: # ----------------------------------------------------------------- environment
10536: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
10537: return $env{'environment.'.$spacequalifierrest};
10538: } else {
10539: if ($uname eq 'anonymous' && $udom eq '') {
10540: return '';
10541: }
10542: my %returnhash=&userenvironment($udom,$uname,
10543: $spacequalifierrest);
10544: return $returnhash{$spacequalifierrest};
10545: }
10546: } elsif ($realm eq 'system') {
10547: # ----------------------------------------------------------------- system.time
10548: if ($space eq 'time') {
10549: return time;
10550: }
10551: } elsif ($realm eq 'server') {
10552: # ----------------------------------------------------------------- system.time
10553: if ($space eq 'name') {
10554: return $ENV{'SERVER_NAME'};
10555: }
10556: }
10557: return '';
10558: }
10559:
10560: sub get_reply {
10561: my ($reply_value) = @_;
10562: if (ref($reply_value) eq 'ARRAY') {
10563: if (wantarray) {
10564: return @$reply_value;
10565: }
10566: return $reply_value->[0];
10567: } else {
10568: return $reply_value;
10569: }
10570: }
10571:
10572: sub check_group_parms {
10573: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
10574: my @groupitems = ();
10575: my $resultitem;
10576: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
10577: foreach my $group (@{$groups}) {
10578: foreach my $level (@levels) {
10579: my $item = $courseid.'.['.$group.'].'.$level->[0];
10580: push(@groupitems,[$item,$level->[1]]);
10581: }
10582: }
10583: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10584: $env{'course.'.$courseid.'.domain'},
10585: 'course',@groupitems);
10586: return $coursereply;
10587: }
10588:
10589: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10590: my ($courseid,@groups) = @_;
10591: @groups = sort(@groups);
10592: return @groups;
10593: }
10594:
10595: sub packages_tab_default {
10596: my ($uri,$varname)=@_;
10597: my (undef,$part,$name)=split(/\./,$varname);
10598:
10599: my (@extension,@specifics,$do_default);
10600: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10601: my ($pack_type,$pack_part)=split(/_/,$package,2);
10602: if ($pack_type eq 'default') {
10603: $do_default=1;
10604: } elsif ($pack_type eq 'extension') {
10605: push(@extension,[$package,$pack_type,$pack_part]);
10606: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10607: # only look at packages defaults for packages that this id is
10608: push(@specifics,[$package,$pack_type,$pack_part]);
10609: }
10610: }
10611: # first look for a package that matches the requested part id
10612: foreach my $package (@specifics) {
10613: my (undef,$pack_type,$pack_part)=@{$package};
10614: next if ($pack_part ne $part);
10615: if (defined($packagetab{"$pack_type&$name&default"})) {
10616: return $packagetab{"$pack_type&$name&default"};
10617: }
10618: }
10619: # look for any possible matching non extension_ package
10620: foreach my $package (@specifics) {
10621: my (undef,$pack_type,$pack_part)=@{$package};
10622: if (defined($packagetab{"$pack_type&$name&default"})) {
10623: return $packagetab{"$pack_type&$name&default"};
10624: }
10625: if ($pack_type eq 'part') { $pack_part='0'; }
10626: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10627: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10628: }
10629: }
10630: # look for any posible extension_ match
10631: foreach my $package (@extension) {
10632: my ($package,$pack_type)=@{$package};
10633: if (defined($packagetab{"$pack_type&$name&default"})) {
10634: return $packagetab{"$pack_type&$name&default"};
10635: }
10636: if (defined($packagetab{$package."&$name&default"})) {
10637: return $packagetab{$package."&$name&default"};
10638: }
10639: }
10640: # look for a global default setting
10641: if ($do_default && defined($packagetab{"default&$name&default"})) {
10642: return $packagetab{"default&$name&default"};
10643: }
10644: return undef;
10645: }
10646:
10647: sub add_prefix_and_part {
10648: my ($prefix,$part)=@_;
10649: my $keyroot;
10650: if (defined($prefix) && $prefix !~ /^__/) {
10651: # prefix that has a part already
10652: $keyroot=$prefix;
10653: } elsif (defined($prefix)) {
10654: # prefix that is missing a part
10655: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10656: } else {
10657: # no prefix at all
10658: if (defined($part)) { $keyroot='_'.$part; }
10659: }
10660: return $keyroot;
10661: }
10662:
10663: # ---------------------------------------------------------------- Get metadata
10664:
10665: my %metaentry;
10666: my %importedpartids;
10667: sub metadata {
10668: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10669: $uri=&declutter($uri);
10670: # if it is a non metadata possible uri return quickly
10671: if (($uri eq '') ||
10672: (($uri =~ m|^/*adm/|) &&
10673: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
10674: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10675: return undef;
10676: }
10677: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
10678: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10679: return undef;
10680: }
10681: my $filename=$uri;
10682: $uri=~s/\.meta$//;
10683: #
10684: # Is the metadata already cached?
10685: # Look at timestamp of caching
10686: # Everything is cached by the main uri, libraries are never directly cached
10687: #
10688: if (!defined($liburi)) {
10689: my ($result,$cached)=&is_cached_new('meta',$uri);
10690: if (defined($cached)) { return $result->{':'.$what}; }
10691: }
10692: {
10693: # Imported parts would go here
10694: my %importedids=();
10695: my @origfileimportpartids=();
10696: my $importedparts=0;
10697: #
10698: # Is this a recursive call for a library?
10699: #
10700: # if (! exists($metacache{$uri})) {
10701: # $metacache{$uri}={};
10702: # }
10703: my $cachetime = 60*60;
10704: if ($liburi) {
10705: $liburi=&declutter($liburi);
10706: $filename=$liburi;
10707: } else {
10708: &devalidate_cache_new('meta',$uri);
10709: undef(%metaentry);
10710: }
10711: my %metathesekeys=();
10712: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10713: my $metastring;
10714: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10715: my $which = &hreflocation('','/'.($liburi || $uri));
10716: $metastring =
10717: &Apache::lonnet::ssi_body($which,
10718: ('grade_target' => 'meta'));
10719: $cachetime = 1; # only want this cached in the child not long term
10720: } elsif (($uri !~ m -^(editupload)/-) &&
10721: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10722: my $file=&filelocation('',&clutter($filename));
10723: #push(@{$metaentry{$uri.'.file'}},$file);
10724: $metastring=&getfile($file);
10725: }
10726: my $parser=HTML::LCParser->new(\$metastring);
10727: my $token;
10728: undef %metathesekeys;
10729: while ($token=$parser->get_token) {
10730: if ($token->[0] eq 'S') {
10731: if (defined($token->[2]->{'package'})) {
10732: #
10733: # This is a package - get package info
10734: #
10735: my $package=$token->[2]->{'package'};
10736: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10737: if (defined($token->[2]->{'id'})) {
10738: $keyroot.='_'.$token->[2]->{'id'};
10739: }
10740: if ($metaentry{':packages'}) {
10741: $metaentry{':packages'}.=','.$package.$keyroot;
10742: } else {
10743: $metaentry{':packages'}=$package.$keyroot;
10744: }
10745: foreach my $pack_entry (keys(%packagetab)) {
10746: my $part=$keyroot;
10747: $part=~s/^\_//;
10748: if ($pack_entry=~/^\Q$package\E\&/ ||
10749: $pack_entry=~/^\Q$package\E_0\&/) {
10750: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10751: # ignore package.tab specified default values
10752: # here &package_tab_default() will fetch those
10753: if ($subp eq 'default') { next; }
10754: my $value=$packagetab{$pack_entry};
10755: my $unikey;
10756: if ($pack =~ /_0$/) {
10757: $unikey='parameter_0_'.$name;
10758: $part=0;
10759: } else {
10760: $unikey='parameter'.$keyroot.'_'.$name;
10761: }
10762: if ($subp eq 'display') {
10763: $value.=' [Part: '.$part.']';
10764: }
10765: $metaentry{':'.$unikey.'.part'}=$part;
10766: $metathesekeys{$unikey}=1;
10767: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10768: $metaentry{':'.$unikey.'.'.$subp}=$value;
10769: }
10770: if (defined($metaentry{':'.$unikey.'.default'})) {
10771: $metaentry{':'.$unikey}=
10772: $metaentry{':'.$unikey.'.default'};
10773: }
10774: }
10775: }
10776: } else {
10777: #
10778: # This is not a package - some other kind of start tag
10779: #
10780: my $entry=$token->[1];
10781: my $unikey='';
10782:
10783: if ($entry eq 'import') {
10784: #
10785: # Importing a library here
10786: #
10787: my $location=$parser->get_text('/import');
10788: my $dir=$filename;
10789: $dir=~s|[^/]*$||;
10790: $location=&filelocation($dir,$location);
10791:
10792: my $importmode=$token->[2]->{'importmode'};
10793: if ($importmode eq 'problem') {
10794: # Import as problem/response
10795: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10796: } elsif ($importmode eq 'part') {
10797: # Import as part(s)
10798: $importedparts=1;
10799: # We need to get the original file and the imported file to get the part order correct
10800: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
10801: # Load and inspect original file
10802: if ($#origfileimportpartids<0) {
10803: undef(%importedpartids);
10804: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
10805: my $origfile=&getfile($origfilelocation);
10806: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10807: }
10808:
10809: # Load and inspect imported file
10810: my $impfile=&getfile($location);
10811: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
10812: if ($#impfilepartids>=0) {
10813: # This problem had parts
10814: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
10815: } else {
10816: # Importing by turning a single problem into a problem part
10817: # It gets the import-tags ID as part-ID
10818: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
10819: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
10820: }
10821: } else {
10822: # Normal import
10823: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10824: if (defined($token->[2]->{'id'})) {
10825: $unikey.='_'.$token->[2]->{'id'};
10826: }
10827: }
10828:
10829: if ($depthcount<20) {
10830: my $metadata =
10831: &metadata($uri,'keys', $location,$unikey,
10832: $depthcount+1);
10833: foreach my $meta (split(',',$metadata)) {
10834: $metaentry{':'.$meta}=$metaentry{':'.$meta};
10835: $metathesekeys{$meta}=1;
10836: }
10837:
10838: }
10839: } else {
10840: #
10841: # Not importing, some other kind of non-package, non-library start tag
10842: #
10843: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
10844: if (defined($token->[2]->{'id'})) {
10845: $unikey.='_'.$token->[2]->{'id'};
10846: }
10847: if (defined($token->[2]->{'name'})) {
10848: $unikey.='_'.$token->[2]->{'name'};
10849: }
10850: $metathesekeys{$unikey}=1;
10851: foreach my $param (@{$token->[3]}) {
10852: $metaentry{':'.$unikey.'.'.$param} =
10853: $token->[2]->{$param};
10854: }
10855: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
10856: my $default=$metaentry{':'.$unikey.'.default'};
10857: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
10858: # only ws inside the tag, and not in default, so use default
10859: # as value
10860: $metaentry{':'.$unikey}=$default;
10861: } elsif ( $internaltext =~ /\S/ ) {
10862: # something interesting inside the tag
10863: $metaentry{':'.$unikey}=$internaltext;
10864: } else {
10865: # no interesting values, don't set a default
10866: }
10867: # end of not-a-package not-a-library import
10868: }
10869: # end of not-a-package start tag
10870: }
10871: # the next is the end of "start tag"
10872: }
10873: }
10874: my ($extension) = ($uri =~ /\.(\w+)$/);
10875: $extension = lc($extension);
10876: if ($extension eq 'htm') { $extension='html'; }
10877:
10878: foreach my $key (keys(%packagetab)) {
10879: #no specific packages #how's our extension
10880: if ($key!~/^extension_\Q$extension\E&/) { next; }
10881: &metadata_create_package_def($uri,$key,'extension_'.$extension,
10882: \%metathesekeys);
10883: }
10884:
10885: if (!exists($metaentry{':packages'})
10886: || $packagetab{"import_defaults&extension_$extension"}) {
10887: foreach my $key (keys(%packagetab)) {
10888: #no specific packages well let's get default then
10889: if ($key!~/^default&/) { next; }
10890: &metadata_create_package_def($uri,$key,'default',
10891: \%metathesekeys);
10892: }
10893: }
10894: # are there custom rights to evaluate
10895: if ($metaentry{':copyright'} eq 'custom') {
10896:
10897: #
10898: # Importing a rights file here
10899: #
10900: unless ($depthcount) {
10901: my $location=$metaentry{':customdistributionfile'};
10902: my $dir=$filename;
10903: $dir=~s|[^/]*$||;
10904: $location=&filelocation($dir,$location);
10905: my $rights_metadata =
10906: &metadata($uri,'keys',$location,'_rights',
10907: $depthcount+1);
10908: foreach my $rights (split(',',$rights_metadata)) {
10909: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
10910: $metathesekeys{$rights}=1;
10911: }
10912: }
10913: }
10914: # uniqifiy package listing
10915: my %seen;
10916: my @uniq_packages =
10917: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
10918: $metaentry{':packages'} = join(',',@uniq_packages);
10919:
10920: if ($importedparts) {
10921: # We had imported parts and need to rebuild partorder
10922: $metaentry{':partorder'}='';
10923: $metathesekeys{'partorder'}=1;
10924: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
10925: if ($origfileimportpartids[$index] eq 'part') {
10926: # original part, part of the problem
10927: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
10928: } else {
10929: # we have imported parts at this position
10930: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
10931: }
10932: }
10933: $metaentry{':partorder'}=~s/^\,//;
10934: }
10935:
10936: $metaentry{':keys'} = join(',',keys(%metathesekeys));
10937: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
10938: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
10939: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
10940: # this is the end of "was not already recently cached
10941: }
10942: return $metaentry{':'.$what};
10943: }
10944:
10945: sub metadata_create_package_def {
10946: my ($uri,$key,$package,$metathesekeys)=@_;
10947: my ($pack,$name,$subp)=split(/\&/,$key);
10948: if ($subp eq 'default') { next; }
10949:
10950: if (defined($metaentry{':packages'})) {
10951: $metaentry{':packages'}.=','.$package;
10952: } else {
10953: $metaentry{':packages'}=$package;
10954: }
10955: my $value=$packagetab{$key};
10956: my $unikey;
10957: $unikey='parameter_0_'.$name;
10958: $metaentry{':'.$unikey.'.part'}=0;
10959: $$metathesekeys{$unikey}=1;
10960: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10961: $metaentry{':'.$unikey.'.'.$subp}=$value;
10962: }
10963: if (defined($metaentry{':'.$unikey.'.default'})) {
10964: $metaentry{':'.$unikey}=
10965: $metaentry{':'.$unikey.'.default'};
10966: }
10967: }
10968:
10969: sub metadata_generate_part0 {
10970: my ($metadata,$metacache,$uri) = @_;
10971: my %allnames;
10972: foreach my $metakey (keys(%$metadata)) {
10973: if ($metakey=~/^parameter\_(.*)/) {
10974: my $part=$$metacache{':'.$metakey.'.part'};
10975: my $name=$$metacache{':'.$metakey.'.name'};
10976: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
10977: $allnames{$name}=$part;
10978: }
10979: }
10980: }
10981: foreach my $name (keys(%allnames)) {
10982: $$metadata{"parameter_0_$name"}=1;
10983: my $key=":parameter_0_$name";
10984: $$metacache{"$key.part"}='0';
10985: $$metacache{"$key.name"}=$name;
10986: $$metacache{"$key.type"}=$$metacache{':parameter_'.
10987: $allnames{$name}.'_'.$name.
10988: '.type'};
10989: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
10990: '.display'};
10991: my $expr='[Part: '.$allnames{$name}.']';
10992: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
10993: $$metacache{"$key.display"}=$olddis;
10994: }
10995: }
10996:
10997: # ------------------------------------------------------ Devalidate title cache
10998:
10999: sub devalidate_title_cache {
11000: my ($url)=@_;
11001: if (!$env{'request.course.id'}) { return; }
11002: my $symb=&symbread($url);
11003: if (!$symb) { return; }
11004: my $key=$env{'request.course.id'}."\0".$symb;
11005: &devalidate_cache_new('title',$key);
11006: }
11007:
11008: # ------------------------------------------------- Get the title of a course
11009:
11010: sub current_course_title {
11011: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
11012: }
11013: # ------------------------------------------------- Get the title of a resource
11014:
11015: sub gettitle {
11016: my $urlsymb=shift;
11017: my $symb=&symbread($urlsymb);
11018: if ($symb) {
11019: my $key=$env{'request.course.id'}."\0".$symb;
11020: my ($result,$cached)=&is_cached_new('title',$key);
11021: if (defined($cached)) {
11022: return $result;
11023: }
11024: my ($map,$resid,$url)=&decode_symb($symb);
11025: my $title='';
11026: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
11027: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
11028: } else {
11029: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11030: &GDBM_READER(),0640)) {
11031: my $mapid=$bighash{'map_pc_'.&clutter($map)};
11032: $title=$bighash{'title_'.$mapid.'.'.$resid};
11033: untie(%bighash);
11034: }
11035: }
11036: $title=~s/\&colon\;/\:/gs;
11037: if ($title) {
11038: # Remember both $symb and $title for dynamic metadata
11039: $accesshash{$symb.'___crstitle'}=$title;
11040: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
11041: # Cache this title and then return it
11042: return &do_cache_new('title',$key,$title,600);
11043: }
11044: $urlsymb=$url;
11045: }
11046: my $title=&metadata($urlsymb,'title');
11047: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
11048: return $title;
11049: }
11050:
11051: sub get_slot {
11052: my ($which,$cnum,$cdom)=@_;
11053: if (!$cnum || !$cdom) {
11054: (undef,my $courseid)=&whichuser();
11055: $cdom=$env{'course.'.$courseid.'.domain'};
11056: $cnum=$env{'course.'.$courseid.'.num'};
11057: }
11058: my $key=join("\0",'slots',$cdom,$cnum,$which);
11059: my %slotinfo;
11060: if (exists($remembered{$key})) {
11061: $slotinfo{$which} = $remembered{$key};
11062: } else {
11063: %slotinfo=&get('slots',[$which],$cdom,$cnum);
11064: &Apache::lonhomework::showhash(%slotinfo);
11065: my ($tmp)=keys(%slotinfo);
11066: if ($tmp=~/^error:/) { return (); }
11067: $remembered{$key} = $slotinfo{$which};
11068: }
11069: if (ref($slotinfo{$which}) eq 'HASH') {
11070: return %{$slotinfo{$which}};
11071: }
11072: return $slotinfo{$which};
11073: }
11074:
11075: sub get_reservable_slots {
11076: my ($cnum,$cdom,$uname,$udom) = @_;
11077: my $now = time;
11078: my $reservable_info;
11079: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
11080: if (exists($remembered{$key})) {
11081: $reservable_info = $remembered{$key};
11082: } else {
11083: my %resv;
11084: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
11085: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
11086: $reservable_info = \%resv;
11087: $remembered{$key} = $reservable_info;
11088: }
11089: return $reservable_info;
11090: }
11091:
11092: sub get_course_slots {
11093: my ($cnum,$cdom) = @_;
11094: my $hashid=$cnum.':'.$cdom;
11095: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
11096: if (defined($cached)) {
11097: if (ref($result) eq 'HASH') {
11098: return %{$result};
11099: }
11100: } else {
11101: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
11102: my ($tmp) = keys(%slots);
11103: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11104: &do_cache_new('allslots',$hashid,\%slots,600);
11105: return %slots;
11106: }
11107: }
11108: return;
11109: }
11110:
11111: sub devalidate_slots_cache {
11112: my ($cnum,$cdom)=@_;
11113: my $hashid=$cnum.':'.$cdom;
11114: &devalidate_cache_new('allslots',$hashid);
11115: }
11116:
11117: sub get_coursechange {
11118: my ($cdom,$cnum) = @_;
11119: if ($cdom eq '' || $cnum eq '') {
11120: return unless ($env{'request.course.id'});
11121: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
11122: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
11123: }
11124: my $hashid=$cdom.'_'.$cnum;
11125: my ($change,$cached)=&is_cached_new('crschange',$hashid);
11126: if ((defined($cached)) && ($change ne '')) {
11127: return $change;
11128: } else {
11129: my %crshash;
11130: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
11131: if ($crshash{'internal.contentchange'} eq '') {
11132: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
11133: if ($change eq '') {
11134: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
11135: $change = $crshash{'internal.created'};
11136: }
11137: } else {
11138: $change = $crshash{'internal.contentchange'};
11139: }
11140: my $cachetime = 600;
11141: &do_cache_new('crschange',$hashid,$change,$cachetime);
11142: }
11143: return $change;
11144: }
11145:
11146: sub devalidate_coursechange_cache {
11147: my ($cnum,$cdom)=@_;
11148: my $hashid=$cnum.':'.$cdom;
11149: &devalidate_cache_new('crschange',$hashid);
11150: }
11151:
11152: # ------------------------------------------------- Update symbolic store links
11153:
11154: sub symblist {
11155: my ($mapname,%newhash)=@_;
11156: $mapname=&deversion(&declutter($mapname));
11157: my %hash;
11158: if (($env{'request.course.fn'}) && (%newhash)) {
11159: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11160: &GDBM_WRCREAT(),0640)) {
11161: foreach my $url (keys(%newhash)) {
11162: next if ($url eq 'last_known'
11163: && $env{'form.no_update_last_known'});
11164: $hash{declutter($url)}=&encode_symb($mapname,
11165: $newhash{$url}->[1],
11166: $newhash{$url}->[0]);
11167: }
11168: if (untie(%hash)) {
11169: return 'ok';
11170: }
11171: }
11172: }
11173: return 'error';
11174: }
11175:
11176: # --------------------------------------------------------------- Verify a symb
11177:
11178: sub symbverify {
11179: my ($symb,$thisurl,$encstate)=@_;
11180: my $thisfn=$thisurl;
11181: $thisfn=&declutter($thisfn);
11182: # direct jump to resource in page or to a sequence - will construct own symbs
11183: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
11184: # check URL part
11185: my ($map,$resid,$url)=&decode_symb($symb);
11186:
11187: unless ($url eq $thisfn) { return 0; }
11188:
11189: $symb=&symbclean($symb);
11190: $thisurl=&deversion($thisurl);
11191: $thisfn=&deversion($thisfn);
11192:
11193: my %bighash;
11194: my $okay=0;
11195:
11196: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11197: &GDBM_READER(),0640)) {
11198: my $noclutter;
11199: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
11200: $thisurl =~ s/\?.+$//;
11201: if ($map =~ m{^uploaded/.+\.page$}) {
11202: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
11203: $thisurl =~ s{^\Qhttp://https://\E}{https://};
11204: $noclutter = 1;
11205: }
11206: }
11207: my $ids;
11208: if ($noclutter) {
11209: $ids=$bighash{'ids_'.$thisurl};
11210: } else {
11211: $ids=$bighash{'ids_'.&clutter($thisurl)};
11212: }
11213: unless ($ids) {
11214: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
11215: $ids=$bighash{$idkey};
11216: }
11217: if ($ids) {
11218: # ------------------------------------------------------------------- Has ID(s)
11219: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
11220: $symb =~ s/\?.+$//;
11221: }
11222: foreach my $id (split(/\,/,$ids)) {
11223: my ($mapid,$resid)=split(/\./,$id);
11224: if (
11225: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
11226: eq $symb) {
11227: if (ref($encstate)) {
11228: $$encstate = $bighash{'encrypted_'.$id};
11229: }
11230: if (($env{'request.role.adv'}) ||
11231: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
11232: ($thisurl eq '/adm/navmaps')) {
11233: $okay=1;
11234: last;
11235: }
11236: }
11237: }
11238: }
11239: untie(%bighash);
11240: }
11241: return $okay;
11242: }
11243:
11244: # --------------------------------------------------------------- Clean-up symb
11245:
11246: sub symbclean {
11247: my $symb=shift;
11248: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11249: # remove version from map
11250: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
11251:
11252: # remove version from URL
11253: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
11254:
11255: # remove wrapper
11256:
11257: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
11258: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
11259: return $symb;
11260: }
11261:
11262: # ---------------------------------------------- Split symb to find map and url
11263:
11264: sub encode_symb {
11265: my ($map,$resid,$url)=@_;
11266: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
11267: }
11268:
11269: sub decode_symb {
11270: my $symb=shift;
11271: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11272: my ($map,$resid,$url)=split(/___/,$symb);
11273: return (&fixversion($map),$resid,&fixversion($url));
11274: }
11275:
11276: sub fixversion {
11277: my $fn=shift;
11278: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
11279: my %bighash;
11280: my $uri=&clutter($fn);
11281: my $key=$env{'request.course.id'}.'_'.$uri;
11282: # is this cached?
11283: my ($result,$cached)=&is_cached_new('courseresversion',$key);
11284: if (defined($cached)) { return $result; }
11285: # unfortunately not cached, or expired
11286: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11287: &GDBM_READER(),0640)) {
11288: if ($bighash{'version_'.$uri}) {
11289: my $version=$bighash{'version_'.$uri};
11290: unless (($version eq 'mostrecent') ||
11291: ($version==&getversion($uri))) {
11292: $uri=~s/\.(\w+)$/\.$version\.$1/;
11293: }
11294: }
11295: untie %bighash;
11296: }
11297: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
11298: }
11299:
11300: sub deversion {
11301: my $url=shift;
11302: $url=~s/\.\d+\.(\w+)$/\.$1/;
11303: return $url;
11304: }
11305:
11306: # ------------------------------------------------------ Return symb list entry
11307:
11308: sub symbread {
11309: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
11310: my $cache_str='request.symbread.cached.'.$thisfn;
11311: if (defined($env{$cache_str})) {
11312: if ($ignorecachednull) {
11313: return $env{$cache_str} unless ($env{$cache_str} eq '');
11314: } else {
11315: return $env{$cache_str};
11316: }
11317: }
11318: # no filename provided? try from environment
11319: unless ($thisfn) {
11320: if ($env{'request.symb'}) {
11321: return $env{$cache_str}=&symbclean($env{'request.symb'});
11322: }
11323: $thisfn=$env{'request.filename'};
11324: }
11325: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11326: # is that filename actually a symb? Verify, clean, and return
11327: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
11328: if (&symbverify($thisfn,$1)) {
11329: return $env{$cache_str}=&symbclean($thisfn);
11330: }
11331: }
11332: $thisfn=declutter($thisfn);
11333: my %hash;
11334: my %bighash;
11335: my $syval='';
11336: if (($env{'request.course.fn'}) && ($thisfn)) {
11337: my $targetfn = $thisfn;
11338: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
11339: $targetfn = 'adm/wrapper/'.$thisfn;
11340: }
11341: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
11342: $targetfn=$1;
11343: }
11344: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11345: &GDBM_READER(),0640)) {
11346: $syval=$hash{$targetfn};
11347: untie(%hash);
11348: }
11349: # ---------------------------------------------------------- There was an entry
11350: if ($syval) {
11351: #unless ($syval=~/\_\d+$/) {
11352: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
11353: #&appenv({'request.ambiguous' => $thisfn});
11354: #return $env{$cache_str}='';
11355: #}
11356: #$syval.=$1;
11357: #}
11358: } else {
11359: # ------------------------------------------------------- Was not in symb table
11360: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11361: &GDBM_READER(),0640)) {
11362: # ---------------------------------------------- Get ID(s) for current resource
11363: my $ids=$bighash{'ids_'.&clutter($thisfn)};
11364: unless ($ids) {
11365: $ids=$bighash{'ids_/'.$thisfn};
11366: }
11367: unless ($ids) {
11368: # alias?
11369: $ids=$bighash{'mapalias_'.$thisfn};
11370: }
11371: if ($ids) {
11372: # ------------------------------------------------------------------- Has ID(s)
11373: my @possibilities=split(/\,/,$ids);
11374: if ($#possibilities==0) {
11375: # ----------------------------------------------- There is only one possibility
11376: my ($mapid,$resid)=split(/\./,$ids);
11377: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11378: $resid,$thisfn);
11379: if (ref($possibles) eq 'HASH') {
11380: $possibles->{$syval} = 1;
11381: }
11382: if ($checkforblock) {
11383: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
11384: if (@blockers) {
11385: $syval = '';
11386: return;
11387: }
11388: }
11389: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11390: # ------------------------------------------ There is more than one possibility
11391: my $realpossible=0;
11392: foreach my $id (@possibilities) {
11393: my $file=$bighash{'src_'.$id};
11394: my $canaccess;
11395: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11396: $canaccess = 1;
11397: } else {
11398: $canaccess = &allowed('bre',$file);
11399: }
11400: if ($canaccess) {
11401: my ($mapid,$resid)=split(/\./,$id);
11402: if ($bighash{'map_type_'.$mapid} ne 'page') {
11403: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
11404: $resid,$thisfn);
11405: if (ref($possibles) eq 'HASH') {
11406: $possibles->{$syval} = 1;
11407: }
11408: if ($checkforblock) {
11409: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
11410: unless (@blockers > 0) {
11411: $syval = $poss_syval;
11412: $realpossible++;
11413: }
11414: } else {
11415: $syval = $poss_syval;
11416: $realpossible++;
11417: }
11418: }
11419: }
11420: }
11421: if ($realpossible!=1) { $syval=''; }
11422: } else {
11423: $syval='';
11424: }
11425: }
11426: untie(%bighash);
11427: }
11428: }
11429: if ($syval) {
11430: return $env{$cache_str}=$syval;
11431: }
11432: }
11433: &appenv({'request.ambiguous' => $thisfn});
11434: return $env{$cache_str}='';
11435: }
11436:
11437: # ---------------------------------------------------------- Return random seed
11438:
11439: sub numval {
11440: my $txt=shift;
11441: $txt=~tr/A-J/0-9/;
11442: $txt=~tr/a-j/0-9/;
11443: $txt=~tr/K-T/0-9/;
11444: $txt=~tr/k-t/0-9/;
11445: $txt=~tr/U-Z/0-5/;
11446: $txt=~tr/u-z/0-5/;
11447: $txt=~s/\D//g;
11448: if ($_64bit) { if ($txt > 2**32) { return -1; } }
11449: return int($txt);
11450: }
11451:
11452: sub numval2 {
11453: my $txt=shift;
11454: $txt=~tr/A-J/0-9/;
11455: $txt=~tr/a-j/0-9/;
11456: $txt=~tr/K-T/0-9/;
11457: $txt=~tr/k-t/0-9/;
11458: $txt=~tr/U-Z/0-5/;
11459: $txt=~tr/u-z/0-5/;
11460: $txt=~s/\D//g;
11461: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11462: my $total;
11463: foreach my $val (@txts) { $total+=$val; }
11464: if ($_64bit) { if ($total > 2**32) { return -1; } }
11465: return int($total);
11466: }
11467:
11468: sub numval3 {
11469: use integer;
11470: my $txt=shift;
11471: $txt=~tr/A-J/0-9/;
11472: $txt=~tr/a-j/0-9/;
11473: $txt=~tr/K-T/0-9/;
11474: $txt=~tr/k-t/0-9/;
11475: $txt=~tr/U-Z/0-5/;
11476: $txt=~tr/u-z/0-5/;
11477: $txt=~s/\D//g;
11478: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11479: my $total;
11480: foreach my $val (@txts) { $total+=$val; }
11481: if ($_64bit) { $total=(($total<<32)>>32); }
11482: return $total;
11483: }
11484:
11485: sub digest {
11486: my ($data)=@_;
11487: my $digest=&Digest::MD5::md5($data);
11488: my ($a,$b,$c,$d)=unpack("iiii",$digest);
11489: my ($e,$f);
11490: {
11491: use integer;
11492: $e=($a+$b);
11493: $f=($c+$d);
11494: if ($_64bit) {
11495: $e=(($e<<32)>>32);
11496: $f=(($f<<32)>>32);
11497: }
11498: }
11499: if (wantarray) {
11500: return ($e,$f);
11501: } else {
11502: my $g;
11503: {
11504: use integer;
11505: $g=($e+$f);
11506: if ($_64bit) {
11507: $g=(($g<<32)>>32);
11508: }
11509: }
11510: return $g;
11511: }
11512: }
11513:
11514: sub latest_rnd_algorithm_id {
11515: return '64bit5';
11516: }
11517:
11518: sub get_rand_alg {
11519: my ($courseid)=@_;
11520: if (!$courseid) { $courseid=(&whichuser())[1]; }
11521: if ($courseid) {
11522: return $env{"course.$courseid.rndseed"};
11523: }
11524: return &latest_rnd_algorithm_id();
11525: }
11526:
11527: sub validCODE {
11528: my ($CODE)=@_;
11529: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
11530: return 0;
11531: }
11532:
11533: sub getCODE {
11534: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
11535: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
11536: defined($Apache::lonhomework::parsing_a_task) ) &&
11537: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
11538: return $Apache::lonhomework::history{'resource.CODE'};
11539: }
11540: return undef;
11541: }
11542: #
11543: # Determines the random seed for a specific context:
11544: #
11545: # parameters:
11546: # symb - in course context the symb for the seed.
11547: # course_id - The course id of the form domain_coursenum.
11548: # domain - Domain for the user.
11549: # course - Course for the user.
11550: # cenv - environment of the course.
11551: #
11552: # NOTE:
11553: # All parameters are picked out of the environment if missing
11554: # or not defined.
11555: # If a symb cannot be determined the current time is used instead.
11556: #
11557: # For a given well defined symb, courside, domain, username,
11558: # and course environment, the seed is reproducible.
11559: #
11560: sub rndseed {
11561: my ($symb,$courseid,$domain,$username, $cenv)=@_;
11562: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
11563: if (!defined($symb)) {
11564: unless ($symb=$wsymb) { return time; }
11565: }
11566: if (!defined $courseid) {
11567: $courseid=$wcourseid;
11568: }
11569: if (!defined $domain) { $domain=$wdomain; }
11570: if (!defined $username) { $username=$wusername }
11571:
11572: my $which;
11573: if (defined($cenv->{'rndseed'})) {
11574: $which = $cenv->{'rndseed'};
11575: } else {
11576: $which =&get_rand_alg($courseid);
11577: }
11578: if (defined(&getCODE())) {
11579:
11580: if ($which eq '64bit5') {
11581: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
11582: } elsif ($which eq '64bit4') {
11583: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
11584: } else {
11585: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
11586: }
11587: } elsif ($which eq '64bit5') {
11588: return &rndseed_64bit5($symb,$courseid,$domain,$username);
11589: } elsif ($which eq '64bit4') {
11590: return &rndseed_64bit4($symb,$courseid,$domain,$username);
11591: } elsif ($which eq '64bit3') {
11592: return &rndseed_64bit3($symb,$courseid,$domain,$username);
11593: } elsif ($which eq '64bit2') {
11594: return &rndseed_64bit2($symb,$courseid,$domain,$username);
11595: } elsif ($which eq '64bit') {
11596: return &rndseed_64bit($symb,$courseid,$domain,$username);
11597: }
11598: return &rndseed_32bit($symb,$courseid,$domain,$username);
11599: }
11600:
11601: sub rndseed_32bit {
11602: my ($symb,$courseid,$domain,$username)=@_;
11603: {
11604: use integer;
11605: my $symbchck=unpack("%32C*",$symb) << 27;
11606: my $symbseed=numval($symb) << 22;
11607: my $namechck=unpack("%32C*",$username) << 17;
11608: my $nameseed=numval($username) << 12;
11609: my $domainseed=unpack("%32C*",$domain) << 7;
11610: my $courseseed=unpack("%32C*",$courseid);
11611: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11612: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11613: #&logthis("rndseed :$num:$symb");
11614: if ($_64bit) { $num=(($num<<32)>>32); }
11615: return $num;
11616: }
11617: }
11618:
11619: sub rndseed_64bit {
11620: my ($symb,$courseid,$domain,$username)=@_;
11621: {
11622: use integer;
11623: my $symbchck=unpack("%32S*",$symb) << 21;
11624: my $symbseed=numval($symb) << 10;
11625: my $namechck=unpack("%32S*",$username);
11626:
11627: my $nameseed=numval($username) << 21;
11628: my $domainseed=unpack("%32S*",$domain) << 10;
11629: my $courseseed=unpack("%32S*",$courseid);
11630:
11631: my $num1=$symbchck+$symbseed+$namechck;
11632: my $num2=$nameseed+$domainseed+$courseseed;
11633: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11634: #&logthis("rndseed :$num:$symb");
11635: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11636: return "$num1,$num2";
11637: }
11638: }
11639:
11640: sub rndseed_64bit2 {
11641: my ($symb,$courseid,$domain,$username)=@_;
11642: {
11643: use integer;
11644: # strings need to be an even # of cahracters long, it it is odd the
11645: # last characters gets thrown away
11646: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11647: my $symbseed=numval($symb) << 10;
11648: my $namechck=unpack("%32S*",$username.' ');
11649:
11650: my $nameseed=numval($username) << 21;
11651: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11652: my $courseseed=unpack("%32S*",$courseid.' ');
11653:
11654: my $num1=$symbchck+$symbseed+$namechck;
11655: my $num2=$nameseed+$domainseed+$courseseed;
11656: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11657: #&logthis("rndseed :$num:$symb");
11658: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11659: return "$num1,$num2";
11660: }
11661: }
11662:
11663: sub rndseed_64bit3 {
11664: my ($symb,$courseid,$domain,$username)=@_;
11665: {
11666: use integer;
11667: # strings need to be an even # of cahracters long, it it is odd the
11668: # last characters gets thrown away
11669: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11670: my $symbseed=numval2($symb) << 10;
11671: my $namechck=unpack("%32S*",$username.' ');
11672:
11673: my $nameseed=numval2($username) << 21;
11674: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11675: my $courseseed=unpack("%32S*",$courseid.' ');
11676:
11677: my $num1=$symbchck+$symbseed+$namechck;
11678: my $num2=$nameseed+$domainseed+$courseseed;
11679: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11680: #&logthis("rndseed :$num1:$num2:$_64bit");
11681: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11682:
11683: return "$num1:$num2";
11684: }
11685: }
11686:
11687: sub rndseed_64bit4 {
11688: my ($symb,$courseid,$domain,$username)=@_;
11689: {
11690: use integer;
11691: # strings need to be an even # of cahracters long, it it is odd the
11692: # last characters gets thrown away
11693: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11694: my $symbseed=numval3($symb) << 10;
11695: my $namechck=unpack("%32S*",$username.' ');
11696:
11697: my $nameseed=numval3($username) << 21;
11698: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11699: my $courseseed=unpack("%32S*",$courseid.' ');
11700:
11701: my $num1=$symbchck+$symbseed+$namechck;
11702: my $num2=$nameseed+$domainseed+$courseseed;
11703: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11704: #&logthis("rndseed :$num1:$num2:$_64bit");
11705: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11706:
11707: return "$num1:$num2";
11708: }
11709: }
11710:
11711: sub rndseed_64bit5 {
11712: my ($symb,$courseid,$domain,$username)=@_;
11713: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11714: return "$num1:$num2";
11715: }
11716:
11717: sub rndseed_CODE_64bit {
11718: my ($symb,$courseid,$domain,$username)=@_;
11719: {
11720: use integer;
11721: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11722: my $symbseed=numval2($symb);
11723: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11724: my $CODEseed=numval(&getCODE());
11725: my $courseseed=unpack("%32S*",$courseid.' ');
11726: my $num1=$symbseed+$CODEchck;
11727: my $num2=$CODEseed+$courseseed+$symbchck;
11728: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11729: #&logthis("rndseed :$num1:$num2:$symb");
11730: if ($_64bit) { $num1=(($num1<<32)>>32); }
11731: if ($_64bit) { $num2=(($num2<<32)>>32); }
11732: return "$num1:$num2";
11733: }
11734: }
11735:
11736: sub rndseed_CODE_64bit4 {
11737: my ($symb,$courseid,$domain,$username)=@_;
11738: {
11739: use integer;
11740: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11741: my $symbseed=numval3($symb);
11742: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11743: my $CODEseed=numval3(&getCODE());
11744: my $courseseed=unpack("%32S*",$courseid.' ');
11745: my $num1=$symbseed+$CODEchck;
11746: my $num2=$CODEseed+$courseseed+$symbchck;
11747: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11748: #&logthis("rndseed :$num1:$num2:$symb");
11749: if ($_64bit) { $num1=(($num1<<32)>>32); }
11750: if ($_64bit) { $num2=(($num2<<32)>>32); }
11751: return "$num1:$num2";
11752: }
11753: }
11754:
11755: sub rndseed_CODE_64bit5 {
11756: my ($symb,$courseid,$domain,$username)=@_;
11757: my $code = &getCODE();
11758: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11759: return "$num1:$num2";
11760: }
11761:
11762: sub setup_random_from_rndseed {
11763: my ($rndseed)=@_;
11764: if ($rndseed =~/([,:])/) {
11765: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
11766: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
11767: &Math::Random::random_set_seed_from_phrase($rndseed);
11768: } else {
11769: &Math::Random::random_set_seed($num1,$num2);
11770: }
11771: } else {
11772: &Math::Random::random_set_seed_from_phrase($rndseed);
11773: }
11774: }
11775:
11776: sub latest_receipt_algorithm_id {
11777: return 'receipt3';
11778: }
11779:
11780: sub recunique {
11781: my $fucourseid=shift;
11782: my $unique;
11783: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
11784: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11785: $unique=$env{"course.$fucourseid.internal.encseed"};
11786: } else {
11787: $unique=$perlvar{'lonReceipt'};
11788: }
11789: return unpack("%32C*",$unique);
11790: }
11791:
11792: sub recprefix {
11793: my $fucourseid=shift;
11794: my $prefix;
11795: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
11796: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
11797: $prefix=$env{"course.$fucourseid.internal.encpref"};
11798: } else {
11799: $prefix=$perlvar{'lonHostID'};
11800: }
11801: return unpack("%32C*",$prefix);
11802: }
11803:
11804: sub ireceipt {
11805: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
11806:
11807: my $return =&recprefix($fucourseid).'-';
11808:
11809: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
11810: $env{'request.state'} eq 'construct') {
11811: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
11812: return $return;
11813: }
11814:
11815: my $cuname=unpack("%32C*",$funame);
11816: my $cudom=unpack("%32C*",$fudom);
11817: my $cucourseid=unpack("%32C*",$fucourseid);
11818: my $cusymb=unpack("%32C*",$fusymb);
11819: my $cunique=&recunique($fucourseid);
11820: my $cpart=unpack("%32S*",$part);
11821: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
11822:
11823: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
11824:
11825: $return.= ($cunique%$cuname+
11826: $cunique%$cudom+
11827: $cusymb%$cuname+
11828: $cusymb%$cudom+
11829: $cucourseid%$cuname+
11830: $cucourseid%$cudom+
11831: $cpart%$cuname+
11832: $cpart%$cudom);
11833: } else {
11834: $return.= ($cunique%$cuname+
11835: $cunique%$cudom+
11836: $cusymb%$cuname+
11837: $cusymb%$cudom+
11838: $cucourseid%$cuname+
11839: $cucourseid%$cudom);
11840: }
11841: return $return;
11842: }
11843:
11844: sub receipt {
11845: my ($part)=@_;
11846: my ($symb,$courseid,$domain,$name) = &whichuser();
11847: return &ireceipt($name,$domain,$courseid,$symb,$part);
11848: }
11849:
11850: sub whichuser {
11851: my ($passedsymb)=@_;
11852: my ($symb,$courseid,$domain,$name,$publicuser);
11853: if (defined($env{'form.grade_symb'})) {
11854: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
11855: my $allowed=&allowed('vgr',$tmp_courseid);
11856: if (!$allowed &&
11857: exists($env{'request.course.sec'}) &&
11858: $env{'request.course.sec'} !~ /^\s*$/) {
11859: $allowed=&allowed('vgr',$tmp_courseid.
11860: '/'.$env{'request.course.sec'});
11861: }
11862: if ($allowed) {
11863: ($symb)=&get_env_multiple('form.grade_symb');
11864: $courseid=$tmp_courseid;
11865: ($domain)=&get_env_multiple('form.grade_domain');
11866: ($name)=&get_env_multiple('form.grade_username');
11867: return ($symb,$courseid,$domain,$name,$publicuser);
11868: }
11869: }
11870: if (!$passedsymb) {
11871: $symb=&symbread();
11872: } else {
11873: $symb=$passedsymb;
11874: }
11875: $courseid=$env{'request.course.id'};
11876: $domain=$env{'user.domain'};
11877: $name=$env{'user.name'};
11878: if ($name eq 'public' && $domain eq 'public') {
11879: if (!defined($env{'form.username'})) {
11880: $env{'form.username'}.=time.rand(10000000);
11881: }
11882: $name.=$env{'form.username'};
11883: }
11884: return ($symb,$courseid,$domain,$name,$publicuser);
11885:
11886: }
11887:
11888: # ------------------------------------------------------------ Serves up a file
11889: # returns either the contents of the file or
11890: # -1 if the file doesn't exist
11891: #
11892: # if the target is a file that was uploaded via DOCS,
11893: # a check will be made to see if a current copy exists on the local server,
11894: # if it does this will be served, otherwise a copy will be retrieved from
11895: # the home server for the course and stored in /home/httpd/html/userfiles on
11896: # the local server.
11897:
11898: sub getfile {
11899: my ($file) = @_;
11900: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
11901: &repcopy($file);
11902: return &readfile($file);
11903: }
11904:
11905: sub repcopy_userfile {
11906: my ($file)=@_;
11907: my $londocroot = $perlvar{'lonDocRoot'};
11908: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
11909: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
11910: my ($cdom,$cnum,$filename) =
11911: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
11912: my $uri="/uploaded/$cdom/$cnum/$filename";
11913: if (-e "$file") {
11914: # we already have a local copy, check it out
11915: my @fileinfo = stat($file);
11916: my $rtncode;
11917: my $info;
11918: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
11919: if ($lwpresp ne 'ok') {
11920: # there is no such file anymore, even though we had a local copy
11921: if ($rtncode eq '404') {
11922: unlink($file);
11923: }
11924: return -1;
11925: }
11926: if ($info < $fileinfo[9]) {
11927: # nice, the file we have is up-to-date, just say okay
11928: return 'ok';
11929: } else {
11930: # the file is outdated, get rid of it
11931: unlink($file);
11932: }
11933: }
11934: # one way or the other, at this point, we don't have the file
11935: # construct the correct path for the file
11936: my @parts = ($cdom,$cnum);
11937: if ($filename =~ m|^(.+)/[^/]+$|) {
11938: push @parts, split(/\//,$1);
11939: }
11940: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
11941: foreach my $part (@parts) {
11942: $path .= '/'.$part;
11943: if (!-e $path) {
11944: mkdir($path,0770);
11945: }
11946: }
11947: # now the path exists for sure
11948: # get a user agent
11949: my $ua=new LWP::UserAgent;
11950: my $transferfile=$file.'.in.transfer';
11951: # FIXME: this should flock
11952: if (-e $transferfile) { return 'ok'; }
11953: my $request;
11954: $uri=~s/^\///;
11955: my $homeserver = &homeserver($cnum,$cdom);
11956: my $protocol = $protocol{$homeserver};
11957: $protocol = 'http' if ($protocol ne 'https');
11958: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
11959: my $response=$ua->request($request,$transferfile);
11960: # did it work?
11961: if ($response->is_error()) {
11962: unlink($transferfile);
11963: &logthis("Userfile repcopy failed for $uri");
11964: return -1;
11965: }
11966: # worked, rename the transfer file
11967: rename($transferfile,$file);
11968: return 'ok';
11969: }
11970:
11971: sub tokenwrapper {
11972: my $uri=shift;
11973: $uri=~s|^https?\://([^/]+)||;
11974: $uri=~s|^/||;
11975: $env{'user.environment'}=~/\/([^\/]+)\.id/;
11976: my $token=$1;
11977: my (undef,$udom,$uname,$file)=split('/',$uri,4);
11978: if ($udom && $uname && $file) {
11979: $file=~s|(\?\.*)*$||;
11980: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
11981: my $homeserver = &homeserver($uname,$udom);
11982: my $protocol = $protocol{$homeserver};
11983: $protocol = 'http' if ($protocol ne 'https');
11984: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
11985: (($uri=~/\?/)?'&':'?').'token='.$token.
11986: '&tokenissued='.$perlvar{'lonHostID'};
11987: } else {
11988: return '/adm/notfound.html';
11989: }
11990: }
11991:
11992: # call with reqtype HEAD: get last modification time
11993: # call with reqtype GET: get the file contents
11994: # Do not call this with reqtype GET for large files! It loads everything into memory
11995: #
11996: sub getuploaded {
11997: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
11998: $uri=~s/^\///;
11999: my $homeserver = &homeserver($cnum,$cdom);
12000: my $protocol = $protocol{$homeserver};
12001: $protocol = 'http' if ($protocol ne 'https');
12002: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
12003: my $ua=new LWP::UserAgent;
12004: my $request=new HTTP::Request($reqtype,$uri);
12005: my $response=$ua->request($request);
12006: $$rtncode = $response->code;
12007: if (! $response->is_success()) {
12008: return 'failed';
12009: }
12010: if ($reqtype eq 'HEAD') {
12011: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
12012: } elsif ($reqtype eq 'GET') {
12013: $$info = $response->content;
12014: }
12015: return 'ok';
12016: }
12017:
12018: sub readfile {
12019: my $file = shift;
12020: if ( (! -e $file ) || ($file eq '') ) { return -1; };
12021: my $fh;
12022: open($fh,"<$file");
12023: my $a='';
12024: while (my $line = <$fh>) { $a .= $line; }
12025: return $a;
12026: }
12027:
12028: sub filelocation {
12029: my ($dir,$file) = @_;
12030: my $location;
12031: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
12032:
12033: if ($file =~ m-^/adm/-) {
12034: $file=~s-^/adm/wrapper/-/-;
12035: $file=~s-^/adm/coursedocs/showdoc/-/-;
12036: }
12037:
12038: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
12039: $location = $file;
12040: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
12041: my ($udom,$uname,$filename)=
12042: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
12043: my $home=&homeserver($uname,$udom);
12044: my $is_me=0;
12045: my @ids=¤t_machine_ids();
12046: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
12047: if ($is_me) {
12048: $location=propath($udom,$uname).'/userfiles/'.$filename;
12049: } else {
12050: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
12051: $udom.'/'.$uname.'/'.$filename;
12052: }
12053: } elsif ($file =~ m-^/adm/-) {
12054: $location = $perlvar{'lonDocRoot'}.'/'.$file;
12055: } else {
12056: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
12057: $file=~s:^/(res|priv)/:/:;
12058: my $space=$1;
12059: if ( !( $file =~ m:^/:) ) {
12060: $location = $dir. '/'.$file;
12061: } else {
12062: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
12063: }
12064: }
12065: $location=~s://+:/:g; # remove duplicate /
12066: while ($location=~m{/\.\./}) {
12067: if ($location =~ m{/[^/]+/\.\./}) {
12068: $location=~ s{/[^/]+/\.\./}{/}g;
12069: } else {
12070: $location=~ s{/\.\./}{/}g;
12071: }
12072: } #remove dir/..
12073: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
12074: return $location;
12075: }
12076:
12077: sub hreflocation {
12078: my ($dir,$file)=@_;
12079: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
12080: $file=filelocation($dir,$file);
12081: } elsif ($file=~m-^/adm/-) {
12082: $file=~s-^/adm/wrapper/-/-;
12083: $file=~s-^/adm/coursedocs/showdoc/-/-;
12084: }
12085: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
12086: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
12087: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
12088: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
12089: {/uploaded/$1/$2/}x;
12090: }
12091: if ($file=~ m{^/userfiles/}) {
12092: $file =~ s{^/userfiles/}{/uploaded/};
12093: }
12094: return $file;
12095: }
12096:
12097:
12098:
12099:
12100:
12101: sub current_machine_domains {
12102: return &machine_domains(&hostname($perlvar{'lonHostID'}));
12103: }
12104:
12105: sub machine_domains {
12106: my ($hostname) = @_;
12107: my @domains;
12108: my %hostname = &all_hostnames();
12109: while( my($id, $name) = each(%hostname)) {
12110: # &logthis("-$id-$name-$hostname-");
12111: if ($hostname eq $name) {
12112: push(@domains,&host_domain($id));
12113: }
12114: }
12115: return @domains;
12116: }
12117:
12118: sub current_machine_ids {
12119: return &machine_ids(&hostname($perlvar{'lonHostID'}));
12120: }
12121:
12122: sub machine_ids {
12123: my ($hostname) = @_;
12124: $hostname ||= &hostname($perlvar{'lonHostID'});
12125: my @ids;
12126: my %name_to_host = &all_names();
12127: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
12128: return @{ $name_to_host{$hostname} };
12129: }
12130: return;
12131: }
12132:
12133: sub additional_machine_domains {
12134: my @domains;
12135: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
12136: while( my $line = <$fh>) {
12137: $line =~ s/\s//g;
12138: push(@domains,$line);
12139: }
12140: return @domains;
12141: }
12142:
12143: sub default_login_domain {
12144: my $domain = $perlvar{'lonDefDomain'};
12145: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
12146: foreach my $posdom (¤t_machine_domains(),
12147: &additional_machine_domains()) {
12148: if (lc($posdom) eq lc($testdomain)) {
12149: $domain=$posdom;
12150: last;
12151: }
12152: }
12153: return $domain;
12154: }
12155:
12156: # ------------------------------------------------------------- Declutters URLs
12157:
12158: sub declutter {
12159: my $thisfn=shift;
12160: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12161: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
12162: $thisfn=~s{^/home/httpd/html}{};
12163: }
12164: $thisfn=~s/^\///;
12165: $thisfn=~s|^adm/wrapper/||;
12166: $thisfn=~s|^adm/coursedocs/showdoc/||;
12167: $thisfn=~s/^res\///;
12168: $thisfn=~s/^priv\///;
12169: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
12170: $thisfn=~s/\?.+$//;
12171: }
12172: return $thisfn;
12173: }
12174:
12175: # ------------------------------------------------------------- Clutter up URLs
12176:
12177: sub clutter {
12178: my $thisfn='/'.&declutter(shift);
12179: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
12180: || $thisfn =~ m{^/adm/(includes|pages)} ) {
12181: $thisfn='/res'.$thisfn;
12182: }
12183: if ($thisfn !~m|^/adm|) {
12184: if ($thisfn =~ m|^/ext/|) {
12185: $thisfn='/adm/wrapper'.$thisfn;
12186: } else {
12187: my ($ext) = ($thisfn =~ /\.(\w+)$/);
12188: my $embstyle=&Apache::loncommon::fileembstyle($ext);
12189: if ($embstyle eq 'ssi'
12190: || ($embstyle eq 'hdn')
12191: || ($embstyle eq 'rat')
12192: || ($embstyle eq 'prv')
12193: || ($embstyle eq 'ign')) {
12194: #do nothing with these
12195: } elsif (($embstyle eq 'img')
12196: || ($embstyle eq 'emb')
12197: || ($embstyle eq 'wrp')) {
12198: $thisfn='/adm/wrapper'.$thisfn;
12199: } elsif ($embstyle eq 'unk'
12200: && $thisfn!~/\.(sequence|page)$/) {
12201: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
12202: } else {
12203: # &logthis("Got a blank emb style");
12204: }
12205: }
12206: }
12207: return $thisfn;
12208: }
12209:
12210: sub clutter_with_no_wrapper {
12211: my $uri = &clutter(shift);
12212: if ($uri =~ m-^/adm/-) {
12213: $uri =~ s-^/adm/wrapper/-/-;
12214: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
12215: }
12216: return $uri;
12217: }
12218:
12219: sub freeze_escape {
12220: my ($value)=@_;
12221: if (ref($value)) {
12222: $value=&nfreeze($value);
12223: return '__FROZEN__'.&escape($value);
12224: }
12225: return &escape($value);
12226: }
12227:
12228:
12229: sub thaw_unescape {
12230: my ($value)=@_;
12231: if ($value =~ /^__FROZEN__/) {
12232: substr($value,0,10,undef);
12233: $value=&unescape($value);
12234: return &thaw($value);
12235: }
12236: return &unescape($value);
12237: }
12238:
12239: sub correct_line_ends {
12240: my ($result)=@_;
12241: $$result =~s/\r\n/\n/mg;
12242: $$result =~s/\r/\n/mg;
12243: }
12244: # ================================================================ Main Program
12245:
12246: sub goodbye {
12247: &logthis("Starting Shut down");
12248: #not converted to using infrastruture and probably shouldn't be
12249: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
12250: #converted
12251: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
12252: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
12253: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
12254: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
12255: #1.1 only
12256: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
12257: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
12258: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
12259: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
12260: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
12261: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
12262: &logthis(sprintf("%-20s is %s",'hits',$hits));
12263: &flushcourselogs();
12264: &logthis("Shutting down");
12265: }
12266:
12267: sub get_dns {
12268: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
12269: if (!$ignore_cache) {
12270: my ($content,$cached)=
12271: &Apache::lonnet::is_cached_new('dns',$url);
12272: if ($cached) {
12273: &$func($content,$hashref);
12274: return;
12275: }
12276: }
12277:
12278: my %alldns;
12279: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12280: foreach my $dns (<$config>) {
12281: next if ($dns !~ /^\^(\S*)/x);
12282: my $line = $1;
12283: my ($host,$protocol) = split(/:/,$line);
12284: if ($protocol ne 'https') {
12285: $protocol = 'http';
12286: }
12287: $alldns{$host} = $protocol;
12288: }
12289: while (%alldns) {
12290: my ($dns) = sort { $b cmp $a } keys(%alldns);
12291: my $ua=new LWP::UserAgent;
12292: $ua->timeout(30);
12293: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
12294: my $response=$ua->request($request);
12295: delete($alldns{$dns});
12296: next if ($response->is_error());
12297: my @content = split("\n",$response->content);
12298: unless ($nocache) {
12299: &do_cache_new('dns',$url,\@content,30*24*60*60);
12300: }
12301: &$func(\@content,$hashref);
12302: return;
12303: }
12304: close($config);
12305: my $which = (split('/',$url))[3];
12306: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
12307: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
12308: my @content = <$config>;
12309: &$func(\@content,$hashref);
12310: return;
12311: }
12312:
12313: # ------------------------------------------------------Get DNS checksums file
12314: sub parse_dns_checksums_tab {
12315: my ($lines,$hashref) = @_;
12316: my $lonhost = $perlvar{'lonHostID'};
12317: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
12318: my $loncaparev = &get_server_loncaparev($machine_dom);
12319: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
12320: my $webconfdir = '/etc/httpd/conf';
12321: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
12322: $webconfdir = '/etc/apache2';
12323: } elsif ($distro =~ /^sles(\d+)$/) {
12324: if ($1 >= 10) {
12325: $webconfdir = '/etc/apache2';
12326: }
12327: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
12328: if ($1 >= 10.0) {
12329: $webconfdir = '/etc/apache2';
12330: }
12331: }
12332: my ($release,$timestamp) = split(/\-/,$loncaparev);
12333: my (%chksum,%revnum);
12334: if (ref($lines) eq 'ARRAY') {
12335: chomp(@{$lines});
12336: my $version = shift(@{$lines});
12337: if ($version eq $release) {
12338: foreach my $line (@{$lines}) {
12339: my ($file,$version,$shasum) = split(/,/,$line);
12340: if ($file =~ m{^/etc/httpd/conf}) {
12341: if ($webconfdir eq '/etc/apache2') {
12342: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
12343: }
12344: }
12345: $chksum{$file} = $shasum;
12346: $revnum{$file} = $version;
12347: }
12348: if (ref($hashref) eq 'HASH') {
12349: %{$hashref} = (
12350: sums => \%chksum,
12351: versions => \%revnum,
12352: );
12353: }
12354: }
12355: }
12356: return;
12357: }
12358:
12359: sub fetch_dns_checksums {
12360: my %checksums;
12361: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
12362: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
12363: my ($release,$timestamp) = split(/\-/,$loncaparev);
12364: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
12365: \%checksums);
12366: return \%checksums;
12367: }
12368:
12369: # ------------------------------------------------------------ Read domain file
12370: {
12371: my $loaded;
12372: my %domain;
12373:
12374: sub parse_domain_tab {
12375: my ($lines) = @_;
12376: foreach my $line (@$lines) {
12377: next if ($line =~ /^(\#|\s*$ )/x);
12378:
12379: chomp($line);
12380: my ($name,@elements) = split(/:/,$line,9);
12381: my %this_domain;
12382: foreach my $field ('description', 'auth_def', 'auth_arg_def',
12383: 'lang_def', 'city', 'longi', 'lati',
12384: 'primary') {
12385: $this_domain{$field} = shift(@elements);
12386: }
12387: $domain{$name} = \%this_domain;
12388: }
12389: }
12390:
12391: sub reset_domain_info {
12392: undef($loaded);
12393: undef(%domain);
12394: }
12395:
12396: sub load_domain_tab {
12397: my ($ignore_cache) = @_;
12398: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
12399: my $fh;
12400: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
12401: my @lines = <$fh>;
12402: &parse_domain_tab(\@lines);
12403: }
12404: close($fh);
12405: $loaded = 1;
12406: }
12407:
12408: sub domain {
12409: &load_domain_tab() if (!$loaded);
12410:
12411: my ($name,$what) = @_;
12412: return if ( !exists($domain{$name}) );
12413:
12414: if (!$what) {
12415: return $domain{$name}{'description'};
12416: }
12417: return $domain{$name}{$what};
12418: }
12419:
12420: sub domain_info {
12421: &load_domain_tab() if (!$loaded);
12422: return %domain;
12423: }
12424:
12425: }
12426:
12427:
12428: # ------------------------------------------------------------- Read hosts file
12429: {
12430: my %hostname;
12431: my %hostdom;
12432: my %libserv;
12433: my $loaded;
12434: my %name_to_host;
12435: my %internetdom;
12436: my %LC_dns_serv;
12437:
12438: sub parse_hosts_tab {
12439: my ($file) = @_;
12440: foreach my $configline (@$file) {
12441: next if ($configline =~ /^(\#|\s*$ )/x);
12442: chomp($configline);
12443: if ($configline =~ /^\^/) {
12444: if ($configline =~ /^\^([\w.\-]+)/) {
12445: $LC_dns_serv{$1} = 1;
12446: }
12447: next;
12448: }
12449: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
12450: $name=~s/\s//g;
12451: if ($id && $domain && $role && $name) {
12452: $hostname{$id}=$name;
12453: push(@{$name_to_host{$name}}, $id);
12454: $hostdom{$id}=$domain;
12455: if ($role eq 'library') { $libserv{$id}=$name; }
12456: if (defined($protocol)) {
12457: if ($protocol eq 'https') {
12458: $protocol{$id} = $protocol;
12459: } else {
12460: $protocol{$id} = 'http';
12461: }
12462: } else {
12463: $protocol{$id} = 'http';
12464: }
12465: if (defined($intdom)) {
12466: $internetdom{$id} = $intdom;
12467: }
12468: }
12469: }
12470: }
12471:
12472: sub reset_hosts_info {
12473: &purge_remembered();
12474: &reset_domain_info();
12475: &reset_hosts_ip_info();
12476: undef(%name_to_host);
12477: undef(%hostname);
12478: undef(%hostdom);
12479: undef(%libserv);
12480: undef($loaded);
12481: }
12482:
12483: sub load_hosts_tab {
12484: my ($ignore_cache) = @_;
12485: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
12486: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12487: my @config = <$config>;
12488: &parse_hosts_tab(\@config);
12489: close($config);
12490: $loaded=1;
12491: }
12492:
12493: sub hostname {
12494: &load_hosts_tab() if (!$loaded);
12495:
12496: my ($lonid) = @_;
12497: return $hostname{$lonid};
12498: }
12499:
12500: sub all_hostnames {
12501: &load_hosts_tab() if (!$loaded);
12502:
12503: return %hostname;
12504: }
12505:
12506: sub all_names {
12507: &load_hosts_tab() if (!$loaded);
12508:
12509: return %name_to_host;
12510: }
12511:
12512: sub all_host_domain {
12513: &load_hosts_tab() if (!$loaded);
12514: return %hostdom;
12515: }
12516:
12517: sub is_library {
12518: &load_hosts_tab() if (!$loaded);
12519:
12520: return exists($libserv{$_[0]});
12521: }
12522:
12523: sub all_library {
12524: &load_hosts_tab() if (!$loaded);
12525:
12526: return %libserv;
12527: }
12528:
12529: sub unique_library {
12530: #2x reverse removes all hostnames that appear more than once
12531: my %unique = reverse &all_library();
12532: return reverse %unique;
12533: }
12534:
12535: sub get_servers {
12536: &load_hosts_tab() if (!$loaded);
12537:
12538: my ($domain,$type) = @_;
12539: my %possible_hosts = ($type eq 'library') ? %libserv
12540: : %hostname;
12541: my %result;
12542: if (ref($domain) eq 'ARRAY') {
12543: while ( my ($host,$hostname) = each(%possible_hosts)) {
12544: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
12545: $result{$host} = $hostname;
12546: }
12547: }
12548: } else {
12549: while ( my ($host,$hostname) = each(%possible_hosts)) {
12550: if ($hostdom{$host} eq $domain) {
12551: $result{$host} = $hostname;
12552: }
12553: }
12554: }
12555: return %result;
12556: }
12557:
12558: sub get_unique_servers {
12559: my %unique = reverse &get_servers(@_);
12560: return reverse %unique;
12561: }
12562:
12563: sub host_domain {
12564: &load_hosts_tab() if (!$loaded);
12565:
12566: my ($lonid) = @_;
12567: return $hostdom{$lonid};
12568: }
12569:
12570: sub all_domains {
12571: &load_hosts_tab() if (!$loaded);
12572:
12573: my %seen;
12574: my @uniq = grep(!$seen{$_}++, values(%hostdom));
12575: return @uniq;
12576: }
12577:
12578: sub internet_dom {
12579: &load_hosts_tab() if (!$loaded);
12580:
12581: my ($lonid) = @_;
12582: return $internetdom{$lonid};
12583: }
12584:
12585: sub is_LC_dns {
12586: &load_hosts_tab() if (!$loaded);
12587:
12588: my ($hostname) = @_;
12589: return exists($LC_dns_serv{$hostname});
12590: }
12591:
12592: }
12593:
12594: {
12595: my %iphost;
12596: my %name_to_ip;
12597: my %lonid_to_ip;
12598:
12599: sub get_hosts_from_ip {
12600: my ($ip) = @_;
12601: my %iphosts = &get_iphost();
12602: if (ref($iphosts{$ip})) {
12603: return @{$iphosts{$ip}};
12604: }
12605: return;
12606: }
12607:
12608: sub reset_hosts_ip_info {
12609: undef(%iphost);
12610: undef(%name_to_ip);
12611: undef(%lonid_to_ip);
12612: }
12613:
12614: sub get_host_ip {
12615: my ($lonid) = @_;
12616: if (exists($lonid_to_ip{$lonid})) {
12617: return $lonid_to_ip{$lonid};
12618: }
12619: my $name=&hostname($lonid);
12620: my $ip = gethostbyname($name);
12621: return if (!$ip || length($ip) ne 4);
12622: $ip=inet_ntoa($ip);
12623: $name_to_ip{$name} = $ip;
12624: $lonid_to_ip{$lonid} = $ip;
12625: return $ip;
12626: }
12627:
12628: sub get_iphost {
12629: my ($ignore_cache) = @_;
12630:
12631: if (!$ignore_cache) {
12632: if (%iphost) {
12633: return %iphost;
12634: }
12635: my ($ip_info,$cached)=
12636: &Apache::lonnet::is_cached_new('iphost','iphost');
12637: if ($cached) {
12638: %iphost = %{$ip_info->[0]};
12639: %name_to_ip = %{$ip_info->[1]};
12640: %lonid_to_ip = %{$ip_info->[2]};
12641: return %iphost;
12642: }
12643: }
12644:
12645: # get yesterday's info for fallback
12646: my %old_name_to_ip;
12647: my ($ip_info,$cached)=
12648: &Apache::lonnet::is_cached_new('iphost','iphost');
12649: if ($cached) {
12650: %old_name_to_ip = %{$ip_info->[1]};
12651: }
12652:
12653: my %name_to_host = &all_names();
12654: foreach my $name (keys(%name_to_host)) {
12655: my $ip;
12656: if (!exists($name_to_ip{$name})) {
12657: $ip = gethostbyname($name);
12658: if (!$ip || length($ip) ne 4) {
12659: if (defined($old_name_to_ip{$name})) {
12660: $ip = $old_name_to_ip{$name};
12661: &logthis("Can't find $name defaulting to old $ip");
12662: } else {
12663: &logthis("Name $name no IP found");
12664: next;
12665: }
12666: } else {
12667: $ip=inet_ntoa($ip);
12668: }
12669: $name_to_ip{$name} = $ip;
12670: } else {
12671: $ip = $name_to_ip{$name};
12672: }
12673: foreach my $id (@{ $name_to_host{$name} }) {
12674: $lonid_to_ip{$id} = $ip;
12675: }
12676: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12677: }
12678: &do_cache_new('iphost','iphost',
12679: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12680: 48*60*60);
12681:
12682: return %iphost;
12683: }
12684:
12685: #
12686: # Given a DNS returns the loncapa host name for that DNS
12687: #
12688: sub host_from_dns {
12689: my ($dns) = @_;
12690: my @hosts;
12691: my $ip;
12692:
12693: if (exists($name_to_ip{$dns})) {
12694: $ip = $name_to_ip{$dns};
12695: }
12696: if (!$ip) {
12697: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12698: if (length($ip) == 4) {
12699: $ip = &IO::Socket::inet_ntoa($ip);
12700: }
12701: }
12702: if ($ip) {
12703: @hosts = get_hosts_from_ip($ip);
12704: return $hosts[0];
12705: }
12706: return undef;
12707: }
12708:
12709: sub get_internet_names {
12710: my ($lonid) = @_;
12711: return if ($lonid eq '');
12712: my ($idnref,$cached)=
12713: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12714: if ($cached) {
12715: return $idnref;
12716: }
12717: my $ip = &get_host_ip($lonid);
12718: my @hosts = &get_hosts_from_ip($ip);
12719: my %iphost = &get_iphost();
12720: my (@idns,%seen);
12721: foreach my $id (@hosts) {
12722: my $dom = &host_domain($id);
12723: my $prim_id = &domain($dom,'primary');
12724: my $prim_ip = &get_host_ip($prim_id);
12725: next if ($seen{$prim_ip});
12726: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12727: foreach my $id (@{$iphost{$prim_ip}}) {
12728: my $intdom = &internet_dom($id);
12729: unless (grep(/^\Q$intdom\E$/,@idns)) {
12730: push(@idns,$intdom);
12731: }
12732: }
12733: }
12734: $seen{$prim_ip} = 1;
12735: }
12736: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12737: }
12738:
12739: }
12740:
12741: sub all_loncaparevs {
12742: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
12743: }
12744:
12745: # ---------------------------------------------------------- Read loncaparev table
12746: {
12747: sub load_loncaparevs {
12748: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12749: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12750: while (my $configline=<$config>) {
12751: chomp($configline);
12752: my ($hostid,$loncaparev)=split(/:/,$configline);
12753: $loncaparevs{$hostid}=$loncaparev;
12754: }
12755: close($config);
12756: }
12757: }
12758: }
12759: }
12760:
12761: # ---------------------------------------------------------- Read serverhostID table
12762: {
12763: sub load_serverhomeIDs {
12764: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
12765: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
12766: while (my $configline=<$config>) {
12767: chomp($configline);
12768: my ($name,$id)=split(/:/,$configline);
12769: $serverhomeIDs{$name}=$id;
12770: }
12771: close($config);
12772: }
12773: }
12774: }
12775: }
12776:
12777:
12778: BEGIN {
12779:
12780: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
12781: unless ($readit) {
12782: {
12783: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
12784: %perlvar = (%perlvar,%{$configvars});
12785: }
12786:
12787:
12788: # ------------------------------------------------------ Read spare server file
12789: {
12790: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
12791:
12792: while (my $configline=<$config>) {
12793: chomp($configline);
12794: if ($configline) {
12795: my ($host,$type) = split(':',$configline,2);
12796: if (!defined($type) || $type eq '') { $type = 'default' };
12797: push(@{ $spareid{$type} }, $host);
12798: }
12799: }
12800: close($config);
12801: }
12802: # ------------------------------------------------------------ Read permissions
12803: {
12804: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
12805:
12806: while (my $configline=<$config>) {
12807: chomp($configline);
12808: if ($configline) {
12809: my ($role,$perm)=split(/ /,$configline);
12810: if ($perm ne '') { $pr{$role}=$perm; }
12811: }
12812: }
12813: close($config);
12814: }
12815:
12816: # -------------------------------------------- Read plain texts for permissions
12817: {
12818: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
12819:
12820: while (my $configline=<$config>) {
12821: chomp($configline);
12822: if ($configline) {
12823: my ($short,@plain)=split(/:/,$configline);
12824: %{$prp{$short}} = ();
12825: if (@plain > 0) {
12826: $prp{$short}{'std'} = $plain[0];
12827: for (my $i=1; $i<@plain; $i++) {
12828: $prp{$short}{'alt'.$i} = $plain[$i];
12829: }
12830: }
12831: }
12832: }
12833: close($config);
12834: }
12835:
12836: # ---------------------------------------------------------- Read package table
12837: {
12838: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
12839:
12840: while (my $configline=<$config>) {
12841: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
12842: chomp($configline);
12843: my ($short,$plain)=split(/:/,$configline);
12844: my ($pack,$name)=split(/\&/,$short);
12845: if ($plain ne '') {
12846: $packagetab{$pack.'&'.$name.'&name'}=$name;
12847: $packagetab{$short}=$plain;
12848: }
12849: }
12850: close($config);
12851: }
12852:
12853: # ---------------------------------------------------------- Read loncaparev table
12854:
12855: &load_loncaparevs();
12856:
12857: # ---------------------------------------------------------- Read serverhostID table
12858:
12859: &load_serverhomeIDs();
12860:
12861: # ---------------------------------------------------------- Read releaseslist XML
12862: {
12863: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
12864: if (-e $file) {
12865: my $parser = HTML::LCParser->new($file);
12866: while (my $token = $parser->get_token()) {
12867: if ($token->[0] eq 'S') {
12868: my $item = $token->[1];
12869: my $name = $token->[2]{'name'};
12870: my $value = $token->[2]{'value'};
12871: my $valuematch = $token->[2]{'valuematch'};
12872: if ($item ne '' && $name ne '' && ($value ne '' || $valuematch ne '')) {
12873: my $release = $parser->get_text();
12874: $release =~ s/(^\s*|\s*$ )//gx;
12875: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch} = $release;
12876: }
12877: }
12878: }
12879: }
12880: }
12881:
12882: # ---------------------------------------------------------- Read managers table
12883: {
12884: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
12885: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
12886: while (my $configline=<$config>) {
12887: chomp($configline);
12888: next if ($configline =~ /^\#/);
12889: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
12890: $managerstab{$configline} = 1;
12891: }
12892: }
12893: close($config);
12894: }
12895: }
12896: }
12897:
12898: # ------------- set up temporary directory
12899: {
12900: $tmpdir = LONCAPA::tempdir();
12901:
12902: }
12903:
12904: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
12905: 'compress_threshold'=> 20_000,
12906: });
12907:
12908: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
12909: $dumpcount=0;
12910: $locknum=0;
12911:
12912: &logtouch();
12913: &logthis('<font color="yellow">INFO: Read configuration</font>');
12914: $readit=1;
12915: {
12916: use integer;
12917: my $test=(2**32)+1;
12918: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
12919: &logthis(" Detected 64bit platform ($_64bit)");
12920: }
12921: }
12922: }
12923:
12924: 1;
12925: __END__
12926:
12927: =pod
12928:
12929: =head1 NAME
12930:
12931: Apache::lonnet - Subroutines to ask questions about things in the network.
12932:
12933: =head1 SYNOPSIS
12934:
12935: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
12936:
12937: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
12938:
12939: Common parameters:
12940:
12941: =over 4
12942:
12943: =item *
12944:
12945: $uname : an internal username (if $cname expecting a course Id specifically)
12946:
12947: =item *
12948:
12949: $udom : a domain (if $cdom expecting a course's domain specifically)
12950:
12951: =item *
12952:
12953: $symb : a resource instance identifier
12954:
12955: =item *
12956:
12957: $namespace : the name of a .db file that contains the data needed or
12958: being set.
12959:
12960: =back
12961:
12962: =head1 OVERVIEW
12963:
12964: lonnet provides subroutines which interact with the
12965: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
12966: about classes, users, and resources.
12967:
12968: For many of these objects you can also use this to store data about
12969: them or modify them in various ways.
12970:
12971: =head2 Symbs
12972:
12973: To identify a specific instance of a resource, LON-CAPA uses symbols
12974: or "symbs"X<symb>. These identifiers are built from the URL of the
12975: map, the resource number of the resource in the map, and the URL of
12976: the resource itself. The latter is somewhat redundant, but might help
12977: if maps change.
12978:
12979: An example is
12980:
12981: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
12982:
12983: The respective map entry is
12984:
12985: <resource id="19" src="/res/msu/korte/tests/part12.problem"
12986: title="Problem 2">
12987: </resource>
12988:
12989: Symbs are used by the random number generator, as well as to store and
12990: restore data specific to a certain instance of for example a problem.
12991:
12992: =head2 Storing And Retrieving Data
12993:
12994: X<store()>X<cstore()>X<restore()>Three of the most important functions
12995: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
12996: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
12997: is is the non-critical message twin of cstore. These functions are for
12998: handlers to store a perl hash to a user's permanent data space in an
12999: easy manner, and to retrieve it again on another call. It is expected
13000: that a handler would use this once at the beginning to retrieve data,
13001: and then again once at the end to send only the new data back.
13002:
13003: The data is stored in the user's data directory on the user's
13004: homeserver under the ID of the course.
13005:
13006: The hash that is returned by restore will have all of the previous
13007: value for all of the elements of the hash.
13008:
13009: Example:
13010:
13011: #creating a hash
13012: my %hash;
13013: $hash{'foo'}='bar';
13014:
13015: #storing it
13016: &Apache::lonnet::cstore(\%hash);
13017:
13018: #changing a value
13019: $hash{'foo'}='notbar';
13020:
13021: #adding a new value
13022: $hash{'bar'}='foo';
13023: &Apache::lonnet::cstore(\%hash);
13024:
13025: #retrieving the hash
13026: my %history=&Apache::lonnet::restore();
13027:
13028: #print the hash
13029: foreach my $key (sort(keys(%history))) {
13030: print("\%history{$key} = $history{$key}");
13031: }
13032:
13033: Will print out:
13034:
13035: %history{1:foo} = bar
13036: %history{1:keys} = foo:timestamp
13037: %history{1:timestamp} = 990455579
13038: %history{2:bar} = foo
13039: %history{2:foo} = notbar
13040: %history{2:keys} = foo:bar:timestamp
13041: %history{2:timestamp} = 990455580
13042: %history{bar} = foo
13043: %history{foo} = notbar
13044: %history{timestamp} = 990455580
13045: %history{version} = 2
13046:
13047: Note that the special hash entries C<keys>, C<version> and
13048: C<timestamp> were added to the hash. C<version> will be equal to the
13049: total number of versions of the data that have been stored. The
13050: C<timestamp> attribute will be the UNIX time the hash was
13051: stored. C<keys> is available in every historical section to list which
13052: keys were added or changed at a specific historical revision of a
13053: hash.
13054:
13055: B<Warning>: do not store the hash that restore returns directly. This
13056: will cause a mess since it will restore the historical keys as if the
13057: were new keys. I.E. 1:foo will become 1:1:foo etc.
13058:
13059: Calling convention:
13060:
13061: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
13062: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
13063:
13064: For more detailed information, see lonnet specific documentation.
13065:
13066: =head1 RETURN MESSAGES
13067:
13068: =over 4
13069:
13070: =item * B<con_lost>: unable to contact remote host
13071:
13072: =item * B<con_delayed>: unable to contact remote host, message will be delivered
13073: when the connection is brought back up
13074:
13075: =item * B<con_failed>: unable to contact remote host and unable to save message
13076: for later delivery
13077:
13078: =item * B<error:>: an error a occurred, a description of the error follows the :
13079:
13080: =item * B<no_such_host>: unable to fund a host associated with the user/domain
13081: that was requested
13082:
13083: =back
13084:
13085: =head1 PUBLIC SUBROUTINES
13086:
13087: =head2 Session Environment Functions
13088:
13089: =over 4
13090:
13091: =item *
13092: X<appenv()>
13093: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
13094: the user envirnoment file, and will be restored for each access this
13095: user makes during this session, also modifies the %env for the current
13096: process. Optional rolesarrayref - if defined contains a reference to an array
13097: of roles which are exempt from the restriction on modifying user.role entries
13098: in the user's environment.db and in %env.
13099:
13100: =item *
13101: X<delenv()>
13102: B<delenv($delthis,$regexp)>: removes all items from the session
13103: environment file that begin with $delthis. If the
13104: optional second arg - $regexp - is true, $delthis is treated as a
13105: regular expression, otherwise \Q$delthis\E is used.
13106: The values are also deleted from the current processes %env.
13107:
13108: =item * get_env_multiple($name)
13109:
13110: gets $name from the %env hash, it seemlessly handles the cases where multiple
13111: values may be defined and end up as an array ref.
13112:
13113: returns an array of values
13114:
13115: =back
13116:
13117: =head2 User Information
13118:
13119: =over 4
13120:
13121: =item *
13122: X<queryauthenticate()>
13123: B<queryauthenticate($uname,$udom)>: try to determine user's current
13124: authentication scheme
13125:
13126: =item *
13127: X<authenticate()>
13128: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
13129: authenticate user from domain's lib servers (first use the current
13130: one). C<$upass> should be the users password.
13131: $checkdefauth is optional (value is 1 if a check should be made to
13132: authenticate user using default authentication method, and allow
13133: account creation if username does not have account in the domain).
13134: $clientcancheckhost is optional (value is 1 if checking whether the
13135: server can host will occur on the client side in lonauth.pm).
13136:
13137: =item *
13138: X<homeserver()>
13139: B<homeserver($uname,$udom)>: find the server which has
13140: the user's directory and files (there must be only one), this caches
13141: the answer, and also caches if there is a borken connection.
13142:
13143: =item *
13144: X<idget()>
13145: B<idget($udom,@ids)>: find the usernames behind a list of IDs
13146: (IDs are a unique resource in a domain, there must be only 1 ID per
13147: username, and only 1 username per ID in a specific domain) (returns
13148: hash: id=>name,id=>name)
13149:
13150: =item *
13151: X<idrget()>
13152: B<idrget($udom,@unames)>: find the IDs behind a list of
13153: usernames (returns hash: name=>id,name=>id)
13154:
13155: =item *
13156: X<idput()>
13157: B<idput($udom,%ids)>: store away a list of names and associated IDs
13158:
13159: =item *
13160: X<rolesinit()>
13161: B<rolesinit($udom,$username)>: get user privileges.
13162: returns user role, first access and timer interval hashes
13163:
13164: =item *
13165: X<privileged()>
13166: B<privileged($username,$domain)>: returns a true if user has a
13167: privileged and active role (i.e. su or dc), false otherwise.
13168:
13169: =item *
13170: X<getsection()>
13171: B<getsection($udom,$uname,$cname)>: finds the section of student in the
13172: course $cname, return section name/number or '' for "not in course"
13173: and '-1' for "no section"
13174:
13175: =item *
13176: X<userenvironment()>
13177: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
13178: passed in @what from the requested user's environment, returns a hash
13179:
13180: =item *
13181: X<userlog_query()>
13182: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
13183: activity.log file. %filters defines filters applied when parsing the
13184: log file. These can be start or end timestamps, or the type of action
13185: - log to look for Login or Logout events, check for Checkin or
13186: Checkout, role for role selection. The response is in the form
13187: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
13188: escaped strings of the action recorded in the activity.log file.
13189:
13190: =back
13191:
13192: =head2 User Roles
13193:
13194: =over 4
13195:
13196: =item *
13197:
13198: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
13199: returns codes for allowed actions.
13200:
13201: The first argument is required, all others are optional.
13202:
13203: $priv is the privilege being checked.
13204: $uri contains additional information about what is being checked for access (e.g.,
13205: URL, course ID etc.).
13206: $symb is the unique resource instance identifier in a course; if needed,
13207: but not provided, it will be retrieved via a call to &symbread().
13208: $role is the role for which a priv is being checked (only used if priv is evb).
13209: $clientip is the user's IP address (only used when checking for access to portfolio
13210: files).
13211: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
13212: prevents recursive calls to &allowed.
13213:
13214: F: full access
13215: U,I,K: authentication modes (cxx only)
13216: '': forbidden
13217: 1: user needs to choose course
13218: 2: browse allowed
13219: A: passphrase authentication needed
13220: B: access temporarily blocked because of a blocking event in a course.
13221:
13222: =item *
13223:
13224: constructaccess($url,$setpriv) : check for access to construction space URL
13225:
13226: See if the owner domain and name in the URL match those in the
13227: expected environment. If so, return three element list
13228: ($ownername,$ownerdomain,$ownerhome).
13229:
13230: Otherwise return the null string.
13231:
13232: If second argument 'setpriv' is true, it assigns the privileges,
13233: and returns the same three element list, unless the owner has
13234: blocked "ad hoc" Domain Coordinator access to the Author Space,
13235: in which case the null string is returned.
13236:
13237: =item *
13238:
13239: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
13240: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
13241: and course level
13242:
13243: =item *
13244:
13245: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
13246: (rolesplain.tab); plain text explanation of a user role term.
13247: $type is Course (default) or Community.
13248: If $forcedefault evaluates to true, text returned will be default
13249: text for $type. Otherwise, if this is a course, the text returned
13250: will be a custom name for the role (if defined in the course's
13251: environment). If no custom name is defined the default is returned.
13252:
13253: =item *
13254:
13255: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
13256: All arguments are optional. Returns a hash of a roles, either for
13257: co-author/assistant author roles for a user's Construction Space
13258: (default), or if $context is 'userroles', roles for the user himself,
13259: In the hash, keys are set to colon-separated $uname,$udom,$role, and
13260: (optionally) if $withsec is true, a fourth colon-separated item - $section.
13261: For each key, value is set to colon-separated start and end times for
13262: the role. If no username and domain are specified, will default to
13263: current user/domain. Types, roles, and roledoms are references to arrays
13264: of role statuses (active, future or previous), roles
13265: (e.g., cc,in, st etc.) and domains of the roles which can be used
13266: to restrict the list of roles reported. If no array ref is
13267: provided for types, will default to return only active roles.
13268:
13269: =item *
13270:
13271: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
13272: user: $uname:$udom has a role in the course: $cdom_$cnum.
13273:
13274: Additional optional arguments are: $type (if role checking is to be restricted
13275: to certain user status types -- previous (expired roles), active (currently
13276: available roles) or future (roles available in the future), and
13277: $hideprivileged -- if true will not report course roles for users who
13278: have active Domain Coordinator role in course's domain or in additional
13279: domains (specified in 'Domains to check for privileged users' in course
13280: environment -- set via: Course Settings -> Classlists and staff listing).
13281:
13282: =item *
13283:
13284: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
13285: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
13286: $possdomains and $possroles are optional array refs -- to domains to check and
13287: roles to check. If $possdomains is not specified, a dump will be done of the
13288: users' roles.db to check for a dc or su role in any domain. This can be
13289: time consuming if &privileged is called repeatedly (e.g., when displaying a
13290: classlist), so in such cases, supplying a $possdomains array is preferred, as
13291: this then allows &privileged_by_domain() to be used, which caches the identity
13292: of privileged users, eliminating the need for repeated calls to &dump().
13293:
13294: =item *
13295:
13296: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
13297: where the outer hash keys are domains specified in the $possdomains array ref,
13298: next inner hash keys are privileged roles specified in the $roles array ref,
13299: and the innermost hash contains key = value pairs for username:domain = end:start
13300: for active or future "privileged" users with that role in that domain. To avoid
13301: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
13302: innerhash are cached using priv_$role and $dom as the identifiers.
13303:
13304: =back
13305:
13306: =head2 User Modification
13307:
13308: =over 4
13309:
13310: =item *
13311:
13312: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
13313: user for the level given by URL. Optional start and end dates (leave empty
13314: string or zero for "no date")
13315:
13316: =item *
13317:
13318: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
13319: change a users, password, possible return values are: ok,
13320: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
13321: refused
13322:
13323: =item *
13324:
13325: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
13326:
13327: =item *
13328:
13329: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
13330: $forceid,$desiredhome,$email,$inststatus,$candelete) :
13331:
13332: will update user information (firstname,middlename,lastname,generation,
13333: permanentemail), and if forceid is true, student/employee ID also.
13334: A user's institutional affiliation(s) can also be updated.
13335: User information fields will not be overwritten with empty entries
13336: unless the field is included in the $candelete array reference.
13337: This array is included when a single user is modified via "Manage Users",
13338: or when Autoupdate.pl is run by cron in a domain.
13339:
13340: =item *
13341:
13342: modifystudent
13343:
13344: modify a student's enrollment and identification information.
13345: The course id is resolved based on the current user's environment.
13346: This means the invoking user must be a course coordinator or otherwise
13347: associated with a course.
13348:
13349: This call is essentially a wrapper for lonnet::modifyuser and
13350: lonnet::modify_student_enrollment
13351:
13352: Inputs:
13353:
13354: =over 4
13355:
13356: =item B<$udom> Student's loncapa domain
13357:
13358: =item B<$uname> Student's loncapa login name
13359:
13360: =item B<$uid> Student/Employee ID
13361:
13362: =item B<$umode> Student's authentication mode
13363:
13364: =item B<$upass> Student's password
13365:
13366: =item B<$first> Student's first name
13367:
13368: =item B<$middle> Student's middle name
13369:
13370: =item B<$last> Student's last name
13371:
13372: =item B<$gene> Student's generation
13373:
13374: =item B<$usec> Student's section in course
13375:
13376: =item B<$end> Unix time of the roles expiration
13377:
13378: =item B<$start> Unix time of the roles start date
13379:
13380: =item B<$forceid> If defined, allow $uid to be changed
13381:
13382: =item B<$desiredhome> server to use as home server for student
13383:
13384: =item B<$email> Student's permanent e-mail address
13385:
13386: =item B<$type> Type of enrollment (auto or manual)
13387:
13388: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
13389:
13390: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
13391:
13392: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
13393:
13394: =item B<$context> role change context (shown in User Management Logs display in a course)
13395:
13396: =item B<$inststatus> institutional status of user - : separated string of escaped status types
13397:
13398: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
13399:
13400: =back
13401:
13402: =item *
13403:
13404: modify_student_enrollment
13405:
13406: Change a student's enrollment status in a class. The environment variable
13407: 'role.request.course' must be defined for this function to proceed.
13408:
13409: Inputs:
13410:
13411: =over 4
13412:
13413: =item $udom, student's domain
13414:
13415: =item $uname, student's name
13416:
13417: =item $uid, student's user id
13418:
13419: =item $first, student's first name
13420:
13421: =item $middle
13422:
13423: =item $last
13424:
13425: =item $gene
13426:
13427: =item $usec
13428:
13429: =item $end
13430:
13431: =item $start
13432:
13433: =item $type
13434:
13435: =item $locktype
13436:
13437: =item $cid
13438:
13439: =item $selfenroll
13440:
13441: =item $context
13442:
13443: =item $credits, number of credits student will earn from this class
13444:
13445: =back
13446:
13447:
13448: =item *
13449:
13450: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
13451: custom role; give a custom role to a user for the level given by URL. Specify
13452: name and domain of role author, and role name
13453:
13454: =item *
13455:
13456: revokerole($udom,$uname,$url,$role) : revoke a role for url
13457:
13458: =item *
13459:
13460: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
13461:
13462: =back
13463:
13464: =head2 Course Infomation
13465:
13466: =over 4
13467:
13468: =item *
13469:
13470: coursedescription($courseid,$options) : returns a hash of information about the
13471: specified course id, including all environment settings for the
13472: course, the description of the course will be in the hash under the
13473: key 'description'
13474:
13475: $options is an optional parameter that if supplied is a hash reference that controls
13476: what how this function works. It has the following key/values:
13477:
13478: =over 4
13479:
13480: =item freshen_cache
13481:
13482: If defined, and the environment cache for the course is valid, it is
13483: returned in the returned hash.
13484:
13485: =item one_time
13486:
13487: If defined, the last cache time is set to _now_
13488:
13489: =item user
13490:
13491: If defined, the supplied username is used instead of the current user.
13492:
13493:
13494: =back
13495:
13496: =item *
13497:
13498: resdata($name,$domain,$type,@which) : request for current parameter
13499: setting for a specific $type, where $type is either 'course' or 'user',
13500: @what should be a list of parameters to ask about. This routine caches
13501: answers for 10 minutes.
13502:
13503: =item *
13504:
13505: get_courseresdata($courseid, $domain) : dump the entire course resource
13506: data base, returning a hash that is keyed by the resource name and has
13507: values that are the resource value. I believe that the timestamps and
13508: versions are also returned.
13509:
13510: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
13511: supplemental content area. This routine caches the number of files for
13512: 10 minutes.
13513:
13514: =back
13515:
13516: =head2 Course Modification
13517:
13518: =over 4
13519:
13520: =item *
13521:
13522: writecoursepref($courseid,%prefs) : write preferences (environment
13523: database) for a course
13524:
13525: =item *
13526:
13527: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
13528:
13529: =item *
13530:
13531: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
13532:
13533: =item *
13534:
13535: is_course($courseid), is_course($cdom, $cnum)
13536:
13537: Accepts either a combined $courseid (in the form of domain_courseid) or the
13538: two component version $cdom, $cnum. It checks if the specified course exists.
13539:
13540: Returns:
13541: undef if the course doesn't exist, otherwise
13542: in scalar context the combined courseid.
13543: in list context the two components of the course identifier, domain and
13544: courseid.
13545:
13546: =back
13547:
13548: =head2 Resource Subroutines
13549:
13550: =over 4
13551:
13552: =item *
13553:
13554: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
13555:
13556: =item *
13557:
13558: repcopy($filename) : subscribes to the requested file, and attempts to
13559: replicate from the owning library server, Might return
13560: 'unavailable', 'not_found', 'forbidden', 'ok', or
13561: 'bad_request', also attempts to grab the metadata for the
13562: resource. Expects the local filesystem pathname
13563: (/home/httpd/html/res/....)
13564:
13565: =back
13566:
13567: =head2 Resource Information
13568:
13569: =over 4
13570:
13571: =item *
13572:
13573: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
13574: and returns the value of a variety of different possible values,
13575: $varname should be a request string, and the other parameters can be
13576: used to specify who and what one is asking about. Ordinarily, $cid
13577: does not need to be specified, as it is retrived from
13578: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
13579: within lonuserstate::loadmap() when initializing a course, before
13580: $env{'request.course.id'} has been set, so it needs to be provided
13581: in that one case.
13582:
13583: Possible values for $varname are environment.lastname (or other item
13584: from the envirnment hash), user.name (or someother aspect about the
13585: user), resource.0.maxtries (or some other part and parameter of a
13586: resource)
13587:
13588: =item *
13589:
13590: directcondval($number) : get current value of a condition; reads from a state
13591: string
13592:
13593: =item *
13594:
13595: condval($condidx) : value of condition index based on state
13596:
13597: =item *
13598:
13599: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
13600: resource's metadata, $what should be either a specific key, or either
13601: 'keys' (to get a list of possible keys) or 'packages' to get a list of
13602: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
13603:
13604: this function automatically caches all requests
13605:
13606: =item *
13607:
13608: metadata_query($query,$custom,$customshow) : make a metadata query against the
13609: network of library servers; returns file handle of where SQL and regex results
13610: will be stored for query
13611:
13612: =item *
13613:
13614: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
13615: return symbolic list entry (all arguments optional).
13616:
13617: Args: filename is the filename (including path) for the file for which a symb
13618: is required; donotrecurse, if true will prevent calls to allowed() being made
13619: to check access status if more than one resource was found in the bighash
13620: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
13621: a randompick); ignorecachednull, if true will prevent a symb of '' being
13622: returned if $env{$cache_str} is defined as ''; checkforblock if true will
13623: cause possible symbs to be checked to determine if they are subject to content
13624: blocking, if so they will not be included as possible symbs; possibles is a
13625: ref to a hash, which, as a side effect, will be populated with all possible
13626: symbs (content blocking not tested).
13627:
13628: returns the data handle
13629:
13630: =item *
13631:
13632: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
13633: and is a possible symb for the URL in $thisfn, and if is an encrypted
13634: resource that the user accessed using /enc/ returns a 1 on success, 0
13635: on failure, user must be in a course, as it assumes the existence of
13636: the course initial hash, and uses $env('request.course.id'}. The third
13637: arg is an optional reference to a scalar. If this arg is passed in the
13638: call to symbverify, it will be set to 1 if the symb has been set to be
13639: encrypted; otherwise it will be null.
13640:
13641: =item *
13642:
13643: symbclean($symb) : removes versions numbers from a symb, returns the
13644: cleaned symb
13645:
13646: =item *
13647:
13648: is_on_map($uri) : checks if the $uri is somewhere on the current
13649: course map, user must be in a course for it to work.
13650:
13651: =item *
13652:
13653: numval($salt) : return random seed value (addend for rndseed)
13654:
13655: =item *
13656:
13657: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13658: a random seed, all arguments are optional, if they aren't sent it uses the
13659: environment to derive them. Note: if symb isn't sent and it can't get one
13660: from &symbread it will use the current time as its return value
13661:
13662: =item *
13663:
13664: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13665: unfakeable, receipt
13666:
13667: =item *
13668:
13669: receipt() : API to ireceipt working off of env values; given out to users
13670:
13671: =item *
13672:
13673: countacc($url) : count the number of accesses to a given URL
13674:
13675: =item *
13676:
13677: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13678:
13679: =item *
13680:
13681: checkin($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 $tcrsid)
13682:
13683: =item *
13684:
13685: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13686:
13687: =item *
13688:
13689: devalidate($symb) : devalidate temporary spreadsheet calculations,
13690: forcing spreadsheet to reevaluate the resource scores next time.
13691:
13692: =item *
13693:
13694: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13695: when viewing in course context.
13696:
13697: input: six args -- filename (decluttered), course number, course domain,
13698: url, symb (if registered) and group (if this is a
13699: group item -- e.g., bulletin board, group page etc.).
13700:
13701: output: array of five scalars --
13702: $cfile -- url for file editing if editable on current server
13703: $home -- homeserver of resource (i.e., for author if published,
13704: or course if uploaded.).
13705: $switchserver -- 1 if server switch will be needed.
13706: $forceedit -- 1 if icon/link should be to go to edit mode
13707: $forceview -- 1 if icon/link should be to go to view mode
13708:
13709: =item *
13710:
13711: is_course_upload($file,$cnum,$cdom)
13712:
13713: Used in course context to determine if current file was uploaded to
13714: the course (i.e., would be found in /userfiles/docs on the course's
13715: homeserver.
13716:
13717: input: 3 args -- filename (decluttered), course number and course domain.
13718: output: boolean -- 1 if file was uploaded.
13719:
13720: =back
13721:
13722: =head2 Storing/Retreiving Data
13723:
13724: =over 4
13725:
13726: =item *
13727:
13728: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
13729: permanently for this url; hashref needs to be given and should be a \%hashname;
13730: the remaining args aren't required and if they aren't passed or are '' they will
13731: be derived from the env (with the exception of $laststore, which is an
13732: optional arg used when a user's submission is stored in grading).
13733: $laststore is $version=$timestamp, where $version is the most recent version
13734: number retrieved for the corresponding $symb in the $namespace db file, and
13735: $timestamp is the timestamp for that transaction (UNIX time).
13736: $laststore is currently only passed when cstore() is called by
13737: structuretags::finalize_storage().
13738:
13739: =item *
13740:
13741: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
13742: but uses critical subroutine
13743:
13744: =item *
13745:
13746: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
13747: all args are optional
13748:
13749: =item *
13750:
13751: dumpstore($namespace,$udom,$uname,$regexp,$range) :
13752: dumps the complete (or key matching regexp) namespace into a hash
13753: ($udom, $uname, $regexp, $range are optional) for a namespace that is
13754: normally &store()ed into
13755:
13756: $range should be either an integer '100' (give me the first 100
13757: matching records)
13758: or be two integers sperated by a - with no spaces
13759: '30-50' (give me the 30th through the 50th matching
13760: records)
13761:
13762:
13763: =item *
13764:
13765: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
13766: replaces a &store() version of data with a replacement set of data
13767: for a particular resource in a namespace passed in the $storehash hash
13768: reference. If $tolog is true, the transaction is logged in the courselog
13769: with an action=PUTSTORE.
13770:
13771: =item *
13772:
13773: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
13774: works very similar to store/cstore, but all data is stored in a
13775: temporary location and can be reset using tmpreset, $storehash should
13776: be a hash reference, returns nothing on success
13777:
13778: =item *
13779:
13780: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
13781: similar to restore, but all data is stored in a temporary location and
13782: can be reset using tmpreset. Returns a hash of values on success,
13783: error string otherwise.
13784:
13785: =item *
13786:
13787: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
13788: deltes all keys for $symb form the temporary storage hash.
13789:
13790: =item *
13791:
13792: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13793: reference filled in from namesp ($udom and $uname are optional)
13794:
13795: =item *
13796:
13797: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
13798: namesp ($udom and $uname are optional)
13799:
13800: =item *
13801:
13802: dump($namespace,$udom,$uname,$regexp,$range) :
13803: dumps the complete (or key matching regexp) namespace into a hash
13804: ($udom, $uname, $regexp, $range are optional)
13805:
13806: $range should be either an integer '100' (give me the first 100
13807: matching records)
13808: or be two integers sperated by a - with no spaces
13809: '30-50' (give me the 30th through the 50th matching
13810: records)
13811: =item *
13812:
13813: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
13814: $store can be a scalar, an array reference, or if the amount to be
13815: incremented is > 1, a hash reference.
13816:
13817: ($udom and $uname are optional)
13818:
13819: =item *
13820:
13821: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
13822: ($udom and $uname are optional)
13823:
13824: =item *
13825:
13826: cput($namespace,$storehash,$udom,$uname) : critical put
13827: ($udom and $uname are optional)
13828:
13829: =item *
13830:
13831: newput($namespace,$storehash,$udom,$uname) :
13832:
13833: Attempts to store the items in the $storehash, but only if they don't
13834: currently exist, if this succeeds you can be certain that you have
13835: successfully created a new key value pair in the $namespace db.
13836:
13837:
13838: Args:
13839: $namespace: name of database to store values to
13840: $storehash: hashref to store to the db
13841: $udom: (optional) domain of user containing the db
13842: $uname: (optional) name of user caontaining the db
13843:
13844: Returns:
13845: 'ok' -> succeeded in storing all keys of $storehash
13846: 'key_exists: <key>' -> failed to anything out of $storehash, as at
13847: least <key> already existed in the db (other
13848: requested keys may also already exist)
13849: 'error: <msg>' -> unable to tie the DB or other error occurred
13850: 'con_lost' -> unable to contact request server
13851: 'refused' -> action was not allowed by remote machine
13852:
13853:
13854: =item *
13855:
13856: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
13857: reference filled in from namesp (encrypts the return communication)
13858: ($udom and $uname are optional)
13859:
13860: =item *
13861:
13862: log($udom,$name,$home,$message) : write to permanent log for user; use
13863: critical subroutine
13864:
13865: =item *
13866:
13867: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
13868: array reference filled in from namespace found in domain level on either
13869: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
13870:
13871: =item *
13872:
13873: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
13874: domain level either on specified domain server ($uhome) or primary domain
13875: server ($udom and $uhome are optional)
13876:
13877: =item *
13878:
13879: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
13880: for: authentication, language, quotas, timezone, date locale, and portal URL in
13881: the target domain.
13882:
13883: May also include additional key => value pairs for the following groups:
13884:
13885: =over
13886:
13887: =item
13888: disk quotas (MB allocated by default to portfolios and authoring spaces).
13889:
13890: =over
13891:
13892: =item defaultquota, authorquota
13893:
13894: =back
13895:
13896: =item
13897: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
13898: portfolio for users).
13899:
13900: =over
13901:
13902: =item
13903: aboutme, blog, webdav, portfolio
13904:
13905: =back
13906:
13907: =item
13908: requestcourses: ability to request courses, and how requests are processed.
13909:
13910: =over
13911:
13912: =item
13913: official, unofficial, community, textbook
13914:
13915: =back
13916:
13917: =item
13918: inststatus: types of institutional affiliation, and order in which they are displayed.
13919:
13920: =over
13921:
13922: =item
13923: inststatustypes, inststatusorder, inststatusguest
13924:
13925: =back
13926:
13927: =item
13928: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
13929: for course's uploaded content.
13930:
13931: =over
13932:
13933: =item
13934: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
13935: communityquota, textbookquota
13936:
13937: =back
13938:
13939: =item
13940: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
13941: on your servers.
13942:
13943: =over
13944:
13945: =item
13946: remotesessions, hostedsessions
13947:
13948: =back
13949:
13950: =back
13951:
13952: In cases where a domain coordinator has never used the "Set Domain Configuration"
13953: utility to create a configuration.db file on a domain's primary library server
13954: only the following domain defaults: auth_def, auth_arg_def, lang_def
13955: -- corresponding values are authentication type (internal, krb4, krb5,
13956: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
13957: will be available. Values are retrieved from cache (if current), unless the
13958: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
13959: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
13960:
13961: Typical usage:
13962:
13963: %domdefaults = &get_domain_defaults($target_domain);
13964:
13965: =back
13966:
13967: =head2 Network Status Functions
13968:
13969: =over 4
13970:
13971: =item *
13972:
13973: dirlist() : return directory list based on URI (first arg).
13974:
13975: Inputs: 1 required, 5 optional.
13976:
13977: =over
13978:
13979: =item
13980: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
13981:
13982: =item
13983: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
13984:
13985: =item
13986: $username - username of user/course to be listed. Extracted from $uri if absent.
13987:
13988: =item
13989: $getpropath - boolean: 1 if prepend path using &propath().
13990:
13991: =item
13992: $getuserdir - boolean: 1 if prepend path for "userfiles".
13993:
13994: =item
13995: $alternateRoot - path to prepend in place of path from $uri.
13996:
13997: =back
13998:
13999: Returns: Array of up to two items.
14000:
14001: =over
14002:
14003: a reference to an array of files/subdirectories
14004:
14005: =over
14006:
14007: Each element in the array of files/subdirectories is a & separated list of
14008: item name and the result of running stat on the item. If dirlist was requested
14009: for a file instead of a directory, the item name will be ''. For a directory
14010: listing, if the item is a metadata file, the element will end &N&M
14011: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
14012: default copyright set (1).
14013:
14014: =back
14015:
14016: a scalar containing error condition (if encountered).
14017:
14018: =over
14019:
14020: =item
14021: no_host (no homeserver identified for $username:$domain).
14022:
14023: =item
14024: no_such_host (server contacted for listing not identified as valid host).
14025:
14026: =item
14027: con_lost (connection to remote server failed).
14028:
14029: =item
14030: refused (invalid $username:$domain received on lond side).
14031:
14032: =item
14033: no_such_dir (directory at specified path on lond side does not exist).
14034:
14035: =item
14036: empty (directory at specified path on lond side is empty).
14037:
14038: =over
14039:
14040: This is currently not encountered because the &ls3, &ls2,
14041: &ls (_handler) routines on the lond side do not filter out
14042: . and .. from a directory listing.
14043:
14044: =back
14045:
14046: =back
14047:
14048: =back
14049:
14050: =item *
14051:
14052: spareserver() : find server with least workload from spare.tab
14053:
14054:
14055: =item *
14056:
14057: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
14058: if there is no corresponding loncapa host.
14059:
14060: =back
14061:
14062:
14063: =head2 Apache Request
14064:
14065: =over 4
14066:
14067: =item *
14068:
14069: ssi($url,%hash) : server side include, does a complete request cycle on url to
14070: localhost, posts hash
14071:
14072: =back
14073:
14074: =head2 Data to String to Data
14075:
14076: =over 4
14077:
14078: =item *
14079:
14080: hash2str(%hash) : convert a hash into a string complete with escaping and '='
14081: and '&' separators, supports elements that are arrayrefs and hashrefs
14082:
14083: =item *
14084:
14085: hashref2str($hashref) : convert a hashref into a string complete with
14086: escaping and '=' and '&' separators, supports elements that are
14087: arrayrefs and hashrefs
14088:
14089: =item *
14090:
14091: arrayref2str($arrayref) : convert an arrayref into a string complete
14092: with escaping and '&' separators, supports elements that are arrayrefs
14093: and hashrefs
14094:
14095: =item *
14096:
14097: str2hash($string) : convert string to hash using unescaping and
14098: splitting on '=' and '&', supports elements that are arrayrefs and
14099: hashrefs
14100:
14101: =item *
14102:
14103: str2array($string) : convert string to hash using unescaping and
14104: splitting on '&', supports elements that are arrayrefs and hashrefs
14105:
14106: =back
14107:
14108: =head2 Logging Routines
14109:
14110:
14111: These routines allow one to make log messages in the lonnet.log and
14112: lonnet.perm logfiles.
14113:
14114: =over 4
14115:
14116: =item *
14117:
14118: logtouch() : make sure the logfile, lonnet.log, exists
14119:
14120: =item *
14121:
14122: logthis() : append message to the normal lonnet.log file, it gets
14123: preiodically rolled over and deleted.
14124:
14125: =item *
14126:
14127: logperm() : append a permanent message to lonnet.perm.log, this log
14128: file never gets deleted by any automated portion of the system, only
14129: messages of critical importance should go in here.
14130:
14131:
14132: =back
14133:
14134: =head2 General File Helper Routines
14135:
14136: =over 4
14137:
14138: =item *
14139:
14140: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
14141: (a) files in /uploaded
14142: (i) If a local copy of the file exists -
14143: compares modification date of local copy with last-modified date for
14144: definitive version stored on home server for course. If local copy is
14145: stale, requests a new version from the home server and stores it.
14146: If the original has been removed from the home server, then local copy
14147: is unlinked.
14148: (ii) If local copy does not exist -
14149: requests the file from the home server and stores it.
14150:
14151: If $caller is 'uploadrep':
14152: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
14153: for request for files originally uploaded via DOCS.
14154: - returns 'ok' if fresh local copy now available, -1 otherwise.
14155:
14156: Otherwise:
14157: This indicates a call from the content generation phase of the request.
14158: - returns the entire contents of the file or -1.
14159:
14160: (b) files in /res
14161: - returns the entire contents of a file or -1;
14162: it properly subscribes to and replicates the file if neccessary.
14163:
14164:
14165: =item *
14166:
14167: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
14168: reference
14169:
14170: returns either a stat() list of data about the file or an empty list
14171: if the file doesn't exist or couldn't find out about it (connection
14172: problems or user unknown)
14173:
14174: =item *
14175:
14176: filelocation($dir,$file) : returns file system location of a file
14177: based on URI; meant to be "fairly clean" absolute reference, $dir is a
14178: directory that relative $file lookups are to looked in ($dir of /a/dir
14179: and a file of ../bob will become /a/bob)
14180:
14181: =item *
14182:
14183: hreflocation($dir,$file) : returns file system location or a URL; same as
14184: filelocation except for hrefs
14185:
14186: =item *
14187:
14188: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
14189: also removes beginning /home/httpd/html unless /priv/ follows it.
14190:
14191: =back
14192:
14193: =head2 Usererfile file routines (/uploaded*)
14194:
14195: =over 4
14196:
14197: =item *
14198:
14199: userfileupload(): main rotine for putting a file in a user or course's
14200: filespace, arguments are,
14201:
14202: formname - required - this is the name of the element in $env where the
14203: filename, and the contents of the file to create/modifed exist
14204: the filename is in $env{'form.'.$formname.'.filename'} and the
14205: contents of the file is located in $env{'form.'.$formname}
14206: context - if coursedoc, store the file in the course of the active role
14207: of the current user;
14208: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
14209: if 'canceloverwrite': delete file in tmp/overwrites directory
14210: subdir - required - subdirectory to put the file in under ../userfiles/
14211: if undefined, it will be placed in "unknown"
14212:
14213: (This routine calls clean_filename() to remove any dangerous
14214: characters from the filename, and then calls finuserfileupload() to
14215: complete the transaction)
14216:
14217: returns either the url of the uploaded file (/uploaded/....) if successful
14218: and /adm/notfound.html if unsuccessful
14219:
14220: =item *
14221:
14222: clean_filename(): routine for cleaing a filename up for storage in
14223: userfile space, argument is:
14224:
14225: filename - proposed filename
14226:
14227: returns: the new clean filename
14228:
14229: =item *
14230:
14231: finishuserfileupload(): routine that creates and sends the file to
14232: userspace, probably shouldn't be called directly
14233:
14234: docuname: username or courseid of destination for the file
14235: docudom: domain of user/course of destination for the file
14236: formname: same as for userfileupload()
14237: fname: filename (including subdirectories) for the file
14238: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
14239: allfiles: reference to hash used to store objects found by parser
14240: codebase: reference to hash used for codebases of java objects found by parser
14241: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
14242: thumbheight: height (pixels) of thumbnail to be created for uploaded image
14243: resizewidth: width to be used to resize image using resizeImage from ImageMagick
14244: resizeheight: height to be used to resize image using resizeImage from ImageMagick
14245: context: if 'overwrite', will move the uploaded file from its temporary location to
14246: userfiles to facilitate overwriting a previously uploaded file with same name.
14247: mimetype: reference to scalar to accommodate mime type determined
14248: from File::MMagic if $parser = parse.
14249:
14250: returns either the url of the uploaded file (/uploaded/....) if successful
14251: and /adm/notfound.html if unsuccessful (or an error message if context
14252: was 'overwrite').
14253:
14254:
14255: =item *
14256:
14257: renameuserfile(): renames an existing userfile to a new name
14258:
14259: Args:
14260: docuname: username or courseid of destination for the file
14261: docudom: domain of user/course of destination for the file
14262: old: current file name (including any subdirs under userfiles)
14263: new: desired file name (including any subdirs under userfiles)
14264:
14265: =item *
14266:
14267: mkdiruserfile(): creates a directory is a userfiles dir
14268:
14269: Args:
14270: docuname: username or courseid of destination for the file
14271: docudom: domain of user/course of destination for the file
14272: dir: dir to create (including any subdirs under userfiles)
14273:
14274: =item *
14275:
14276: removeuserfile(): removes a file that exists in userfiles
14277:
14278: Args:
14279: docuname: username or courseid of destination for the file
14280: docudom: domain of user/course of destination for the file
14281: fname: filname to delete (including any subdirs under userfiles)
14282:
14283: =item *
14284:
14285: removeuploadedurl(): convience function for removeuserfile()
14286:
14287: Args:
14288: url: a full /uploaded/... url to delete
14289:
14290: =item *
14291:
14292: get_portfile_permissions():
14293: Args:
14294: domain: domain of user or course contain the portfolio files
14295: user: name of user or num of course contain the portfolio files
14296: Returns:
14297: hashref of a dump of the proper file_permissions.db
14298:
14299:
14300: =item *
14301:
14302: get_access_controls():
14303:
14304: Args:
14305: current_permissions: the hash ref returned from get_portfile_permissions()
14306: group: (optional) the group you want the files associated with
14307: file: (optional) the file you want access info on
14308:
14309: Returns:
14310: a hash (keys are file names) of hashes containing
14311: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
14312: values are XML containing access control settings (see below)
14313:
14314: Internal notes:
14315:
14316: access controls are stored in file_permissions.db as key=value pairs.
14317: key -> path to file/file_name\0uniqueID:scope_end_start
14318: where scope -> public,guest,course,group,domains or users.
14319: end -> UNIX time for end of access (0 -> no end date)
14320: start -> UNIX time for start of access
14321:
14322: value -> XML description of access control
14323: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
14324: <start></start>
14325: <end></end>
14326:
14327: <password></password> for scope type = guest
14328:
14329: <domain></domain> for scope type = course or group
14330: <number></number>
14331: <roles id="">
14332: <role></role>
14333: <access></access>
14334: <section></section>
14335: <group></group>
14336: </roles>
14337:
14338: <dom></dom> for scope type = domains
14339:
14340: <users> for scope type = users
14341: <user>
14342: <uname></uname>
14343: <udom></udom>
14344: </user>
14345: </users>
14346: </scope>
14347:
14348: Access data is also aggregated for each file in an additional key=value pair:
14349: key -> path to file/file_name\0accesscontrol
14350: value -> reference to hash
14351: hash contains key = value pairs
14352: where key = uniqueID:scope_end_start
14353: value = UNIX time record was last updated
14354:
14355: Used to improve speed of look-ups of access controls for each file.
14356:
14357: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
14358:
14359: =item *
14360:
14361: modify_access_controls():
14362:
14363: Modifies access controls for a portfolio file
14364: Args
14365: 1. file name
14366: 2. reference to hash of required changes,
14367: 3. domain
14368: 4. username
14369: where domain,username are the domain of the portfolio owner
14370: (either a user or a course)
14371:
14372: Returns:
14373: 1. result of additions or updates ('ok' or 'error', with error message).
14374: 2. result of deletions ('ok' or 'error', with error message).
14375: 3. reference to hash of any new or updated access controls.
14376: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
14377: key = integer (inbound ID)
14378: value = uniqueID
14379:
14380: =item *
14381:
14382: get_timebased_id():
14383:
14384: Attempts to get a unique timestamp-based suffix for use with items added to a
14385: course via the Course Editor (e.g., folders, composite pages,
14386: group bulletin boards).
14387:
14388: Args: (first three required; six others optional)
14389:
14390: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
14391: docssequence, or name of group
14392:
14393: 2. keyid (alphanumeric): name of temporary locking key in hash,
14394: e.g., num, boardids
14395:
14396: 3. namespace: name of gdbm file used to store suffixes already assigned;
14397: file will be named nohist_namespace.db
14398:
14399: 4. cdom: domain of course; default is current course domain from %env
14400:
14401: 5. cnum: course number; default is current course number from %env
14402:
14403: 6. idtype: set to concat if an additional digit is to be appended to the
14404: unix timestamp to form the suffix, if the plain timestamp is already
14405: in use. Default is to not do this, but simply increment the unix
14406: timestamp by 1 until a unique key is obtained.
14407:
14408: 7. who: holder of locking key; defaults to user:domain for user.
14409:
14410: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
14411: retrying); default is 3.
14412:
14413: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
14414:
14415: Returns:
14416:
14417: 1. suffix obtained (numeric)
14418:
14419: 2. result of deleting locking key (ok if deleted, or lock never obtained)
14420:
14421: 3. error: contains (localized) error message if an error occurred.
14422:
14423:
14424: =back
14425:
14426: =head2 HTTP Helper Routines
14427:
14428: =over 4
14429:
14430: =item *
14431:
14432: escape() : unpack non-word characters into CGI-compatible hex codes
14433:
14434: =item *
14435:
14436: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
14437:
14438: =back
14439:
14440: =head1 PRIVATE SUBROUTINES
14441:
14442: =head2 Underlying communication routines (Shouldn't call)
14443:
14444: =over 4
14445:
14446: =item *
14447:
14448: subreply() : tries to pass a message to lonc, returns con_lost if incapable
14449:
14450: =item *
14451:
14452: reply() : uses subreply to send a message to remote machine, logs all failures
14453:
14454: =item *
14455:
14456: critical() : passes a critical message to another server; if cannot
14457: get through then place message in connection buffer directory and
14458: returns con_delayed, if incapable of saving message, returns
14459: con_failed
14460:
14461: =item *
14462:
14463: reconlonc() : tries to reconnect lonc client processes.
14464:
14465: =back
14466:
14467: =head2 Resource Access Logging
14468:
14469: =over 4
14470:
14471: =item *
14472:
14473: flushcourselogs() : flush (save) buffer logs and access logs
14474:
14475: =item *
14476:
14477: courselog($what) : save message for course in hash
14478:
14479: =item *
14480:
14481: courseacclog($what) : save message for course using &courselog(). Perform
14482: special processing for specific resource types (problems, exams, quizzes, etc).
14483:
14484: =item *
14485:
14486: goodbye() : flush course logs and log shutting down; it is called in srm.conf
14487: as a PerlChildExitHandler
14488:
14489: =back
14490:
14491: =head2 Other
14492:
14493: =over 4
14494:
14495: =item *
14496:
14497: symblist($mapname,%newhash) : update symbolic storage links
14498:
14499: =back
14500:
14501: =cut
14502:
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