1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1182 2012/08/03 10:55:53 foxr Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 10; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # --------------------------------------------------------------------- Logging
117: {
118: my $logid;
119: sub instructor_log {
120: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if (($cnum eq '') || ($cdom eq '')) {
122: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
123: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
124: }
125: $logid++;
126: my $now = time();
127: my $id=$now.'00000'.$$.'00000'.$logid;
128: return &Apache::lonnet::put('nohist_'.$hash_name,
129: { $id => {
130: 'exe_uname' => $env{'user.name'},
131: 'exe_udom' => $env{'user.domain'},
132: 'exe_time' => $now,
133: 'exe_ip' => $ENV{'REMOTE_ADDR'},
134: 'delflag' => $delflag,
135: 'logentry' => $storehash,
136: 'uname' => $uname,
137: 'udom' => $udom,
138: }
139: },$cdom,$cnum);
140: }
141: }
142:
143: sub logtouch {
144: my $execdir=$perlvar{'lonDaemons'};
145: unless (-e "$execdir/logs/lonnet.log") {
146: open(my $fh,">>$execdir/logs/lonnet.log");
147: close $fh;
148: }
149: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
150: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
151: }
152:
153: sub logthis {
154: my $message=shift;
155: my $execdir=$perlvar{'lonDaemons'};
156: my $now=time;
157: my $local=localtime($now);
158: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
159: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
160: print $fh $logstring;
161: close($fh);
162: }
163: return 1;
164: }
165:
166: sub logperm {
167: my $message=shift;
168: my $execdir=$perlvar{'lonDaemons'};
169: my $now=time;
170: my $local=localtime($now);
171: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
172: print $fh "$now:$message:$local\n";
173: close($fh);
174: }
175: return 1;
176: }
177:
178: sub create_connection {
179: my ($hostname,$lonid) = @_;
180: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
181: Type => SOCK_STREAM,
182: Timeout => 10);
183: return 0 if (!$client);
184: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
185: my $result = <$client>;
186: chomp($result);
187: return 1 if ($result eq 'done');
188: return 0;
189: }
190:
191: sub get_server_timezone {
192: my ($cnum,$cdom) = @_;
193: my $home=&homeserver($cnum,$cdom);
194: if ($home ne 'no_host') {
195: my $cachetime = 24*3600;
196: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
197: if (defined($cached)) {
198: return $timezone;
199: } else {
200: my $timezone = &reply('servertimezone',$home);
201: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
202: }
203: }
204: }
205:
206: sub get_server_distarch {
207: my ($lonhost,$ignore_cache) = @_;
208: if (defined($lonhost)) {
209: if (!defined(&hostname($lonhost))) {
210: return;
211: }
212: my $cachetime = 12*3600;
213: if (!$ignore_cache) {
214: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
215: if (defined($cached)) {
216: return $distarch;
217: }
218: }
219: my $rep = &reply('serverdistarch',$lonhost);
220: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
221: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
222: $rep eq '') {
223: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
224: }
225: }
226: return;
227: }
228:
229: sub get_server_loncaparev {
230: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
231: if (defined($lonhost)) {
232: if (!defined(&hostname($lonhost))) {
233: undef($lonhost);
234: }
235: }
236: if (!defined($lonhost)) {
237: if (defined(&domain($dom,'primary'))) {
238: $lonhost=&domain($dom,'primary');
239: if ($lonhost eq 'no_host') {
240: undef($lonhost);
241: }
242: }
243: }
244: if (defined($lonhost)) {
245: my $cachetime = 12*3600;
246: if (!$ignore_cache) {
247: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
248: if (defined($cached)) {
249: return $loncaparev;
250: }
251: }
252: my ($answer,$loncaparev);
253: my @ids=¤t_machine_ids();
254: if (grep(/^\Q$lonhost\E$/,@ids)) {
255: $answer = $perlvar{'lonVersion'};
256: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
257: $loncaparev = $1;
258: }
259: } else {
260: $answer = &reply('serverloncaparev',$lonhost);
261: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
262: if ($caller eq 'loncron') {
263: my $ua=new LWP::UserAgent;
264: $ua->timeout(4);
265: my $protocol = $protocol{$lonhost};
266: $protocol = 'http' if ($protocol ne 'https');
267: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
268: my $request=new HTTP::Request('GET',$url);
269: my $response=$ua->request($request);
270: unless ($response->is_error()) {
271: my $content = $response->content;
272: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
273: $loncaparev = $1;
274: }
275: }
276: } else {
277: $loncaparev = $loncaparevs{$lonhost};
278: }
279: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
280: $loncaparev = $1;
281: }
282: }
283: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
284: }
285: }
286:
287: sub get_server_homeID {
288: my ($hostname,$ignore_cache,$caller) = @_;
289: unless ($ignore_cache) {
290: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
291: if (defined($cached)) {
292: return $serverhomeID;
293: }
294: }
295: my $cachetime = 12*3600;
296: my $serverhomeID;
297: if ($caller eq 'loncron') {
298: my @machine_ids = &machine_ids($hostname);
299: foreach my $id (@machine_ids) {
300: my $response = &reply('serverhomeID',$id);
301: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
302: $serverhomeID = $response;
303: last;
304: }
305: }
306: if ($serverhomeID eq '') {
307: $serverhomeID = $machine_ids[-1];
308: }
309: } else {
310: $serverhomeID = $serverhomeIDs{$hostname};
311: }
312: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
313: }
314:
315: sub get_remote_globals {
316: my ($lonhost,$whathash,$ignore_cache) = @_;
317: my ($result,%returnhash,%whatneeded);
318: if (ref($whathash) eq 'HASH') {
319: foreach my $what (sort(keys(%{$whathash}))) {
320: my $hashid = $lonhost.'-'.$what;
321: my ($response,$cached);
322: unless ($ignore_cache) {
323: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
324: }
325: if (defined($cached)) {
326: $returnhash{$what} = $response;
327: } else {
328: $whatneeded{$what} = 1;
329: }
330: }
331: if (keys(%whatneeded) == 0) {
332: $result = 'ok';
333: } else {
334: my $requested = &freeze_escape(\%whatneeded);
335: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
336: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
337: ($rep eq 'unknown_cmd')) {
338: $result = $rep;
339: } else {
340: $result = 'ok';
341: my @pairs=split(/\&/,$rep);
342: foreach my $item (@pairs) {
343: my ($key,$value)=split(/=/,$item,2);
344: my $what = &unescape($key);
345: my $hashid = $lonhost.'-'.$what;
346: $returnhash{$what}=&thaw_unescape($value);
347: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
348: }
349: }
350: }
351: }
352: return ($result,\%returnhash);
353: }
354:
355: sub remote_devalidate_cache {
356: my ($lonhost,$name,$id) = @_;
357: my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
358: return $response;
359: }
360:
361: # -------------------------------------------------- Non-critical communication
362: sub subreply {
363: my ($cmd,$server)=@_;
364: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
365: #
366: # With loncnew process trimming, there's a timing hole between lonc server
367: # process exit and the master server picking up the listen on the AF_UNIX
368: # socket. In that time interval, a lock file will exist:
369:
370: my $lockfile=$peerfile.".lock";
371: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
372: sleep(1);
373: }
374: # At this point, either a loncnew parent is listening or an old lonc
375: # or loncnew child is listening so we can connect or everything's dead.
376: #
377: # We'll give the connection a few tries before abandoning it. If
378: # connection is not possible, we'll con_lost back to the client.
379: #
380: my $client;
381: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
382: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
383: Type => SOCK_STREAM,
384: Timeout => 10);
385: if ($client) {
386: last; # Connected!
387: } else {
388: &create_connection(&hostname($server),$server);
389: }
390: sleep(1); # Try again later if failed connection.
391: }
392: my $answer;
393: if ($client) {
394: print $client "sethost:$server:$cmd\n";
395: $answer=<$client>;
396: if (!$answer) { $answer="con_lost"; }
397: chomp($answer);
398: } else {
399: $answer = 'con_lost'; # Failed connection.
400: }
401: return $answer;
402: }
403:
404: sub reply {
405: my ($cmd,$server)=@_;
406: unless (defined(&hostname($server))) { return 'no_such_host'; }
407: my $answer=subreply($cmd,$server);
408: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
409: &logthis("<font color=\"blue\">WARNING:".
410: " $cmd to $server returned $answer</font>");
411: }
412: return $answer;
413: }
414:
415: # ----------------------------------------------------------- Send USR1 to lonc
416:
417: sub reconlonc {
418: my ($lonid) = @_;
419: my $hostname = &hostname($lonid);
420: if ($lonid) {
421: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
422: if ($hostname && -e $peerfile) {
423: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
424: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
425: Type => SOCK_STREAM,
426: Timeout => 10);
427: if ($client) {
428: print $client ("reset_retries\n");
429: my $answer=<$client>;
430: #reset just this one.
431: }
432: }
433: return;
434: }
435:
436: &logthis("Trying to reconnect lonc");
437: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
438: if (open(my $fh,"<$loncfile")) {
439: my $loncpid=<$fh>;
440: chomp($loncpid);
441: if (kill 0 => $loncpid) {
442: &logthis("lonc at pid $loncpid responding, sending USR1");
443: kill USR1 => $loncpid;
444: sleep 1;
445: } else {
446: &logthis(
447: "<font color=\"blue\">WARNING:".
448: " lonc at pid $loncpid not responding, giving up</font>");
449: }
450: } else {
451: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
452: }
453: }
454:
455: # ------------------------------------------------------ Critical communication
456:
457: sub critical {
458: my ($cmd,$server)=@_;
459: unless (&hostname($server)) {
460: &logthis("<font color=\"blue\">WARNING:".
461: " Critical message to unknown server ($server)</font>");
462: return 'no_such_host';
463: }
464: my $answer=reply($cmd,$server);
465: if ($answer eq 'con_lost') {
466: &reconlonc("$perlvar{'lonSockDir'}/$server");
467: my $answer=reply($cmd,$server);
468: if ($answer eq 'con_lost') {
469: my $now=time;
470: my $middlename=$cmd;
471: $middlename=substr($middlename,0,16);
472: $middlename=~s/\W//g;
473: my $dfilename=
474: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
475: $dumpcount++;
476: {
477: my $dfh;
478: if (open($dfh,">$dfilename")) {
479: print $dfh "$cmd\n";
480: close($dfh);
481: }
482: }
483: sleep 2;
484: my $wcmd='';
485: {
486: my $dfh;
487: if (open($dfh,"<$dfilename")) {
488: $wcmd=<$dfh>;
489: close($dfh);
490: }
491: }
492: chomp($wcmd);
493: if ($wcmd eq $cmd) {
494: &logthis("<font color=\"blue\">WARNING: ".
495: "Connection buffer $dfilename: $cmd</font>");
496: &logperm("D:$server:$cmd");
497: return 'con_delayed';
498: } else {
499: &logthis("<font color=\"red\">CRITICAL:"
500: ." Critical connection failed: $server $cmd</font>");
501: &logperm("F:$server:$cmd");
502: return 'con_failed';
503: }
504: }
505: }
506: return $answer;
507: }
508:
509: # ------------------------------------------- check if return value is an error
510:
511: sub error {
512: my ($result) = @_;
513: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
514: if ($2 == 2) { return undef; }
515: return $1;
516: }
517: return undef;
518: }
519:
520: sub convert_and_load_session_env {
521: my ($lonidsdir,$handle)=@_;
522: my @profile;
523: {
524: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
525: if (!$opened) {
526: return 0;
527: }
528: flock($idf,LOCK_SH);
529: @profile=<$idf>;
530: close($idf);
531: }
532: my %temp_env;
533: foreach my $line (@profile) {
534: if ($line !~ m/=/) {
535: return 0;
536: }
537: chomp($line);
538: my ($envname,$envvalue)=split(/=/,$line,2);
539: $temp_env{&unescape($envname)} = &unescape($envvalue);
540: }
541: unlink("$lonidsdir/$handle.id");
542: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
543: 0640)) {
544: %disk_env = %temp_env;
545: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
546: untie(%disk_env);
547: }
548: return 1;
549: }
550:
551: # ------------------------------------------- Transfer profile into environment
552: my $env_loaded;
553: sub transfer_profile_to_env {
554: my ($lonidsdir,$handle,$force_transfer) = @_;
555: if (!$force_transfer && $env_loaded) { return; }
556:
557: if (!defined($lonidsdir)) {
558: $lonidsdir = $perlvar{'lonIDsDir'};
559: }
560: if (!defined($handle)) {
561: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
562: }
563:
564: my $convert;
565: {
566: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
567: if (!$opened) {
568: return;
569: }
570: flock($idf,LOCK_SH);
571: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
572: &GDBM_READER(),0640)) {
573: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
574: untie(%disk_env);
575: } else {
576: $convert = 1;
577: }
578: }
579: if ($convert) {
580: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
581: &logthis("Failed to load session, or convert session.");
582: }
583: }
584:
585: my %remove;
586: while ( my $envname = each(%env) ) {
587: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
588: if ($time < time-300) {
589: $remove{$key}++;
590: }
591: }
592: }
593:
594: $env{'user.environment'} = "$lonidsdir/$handle.id";
595: $env_loaded=1;
596: foreach my $expired_key (keys(%remove)) {
597: &delenv($expired_key);
598: }
599: }
600:
601: # ---------------------------------------------------- Check for valid session
602: sub check_for_valid_session {
603: my ($r,$name) = @_;
604: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
605: if ($name eq '') {
606: $name = 'lonID';
607: }
608: my $lonid=$cookies{$name};
609: return undef if (!$lonid);
610:
611: my $handle=&LONCAPA::clean_handle($lonid->value);
612: my $lonidsdir;
613: if ($name eq 'lonDAV') {
614: $lonidsdir=$r->dir_config('lonDAVsessDir');
615: } else {
616: $lonidsdir=$r->dir_config('lonIDsDir');
617: }
618: return undef if (!-e "$lonidsdir/$handle.id");
619:
620: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
621: return undef if (!$opened);
622:
623: flock($idf,LOCK_SH);
624: my %disk_env;
625: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
626: &GDBM_READER(),0640)) {
627: return undef;
628: }
629:
630: if (!defined($disk_env{'user.name'})
631: || !defined($disk_env{'user.domain'})) {
632: return undef;
633: }
634: return $handle;
635: }
636:
637: sub timed_flock {
638: my ($file,$lock_type) = @_;
639: my $failed=0;
640: eval {
641: local $SIG{__DIE__}='DEFAULT';
642: local $SIG{ALRM}=sub {
643: $failed=1;
644: die("failed lock");
645: };
646: alarm(13);
647: flock($file,$lock_type);
648: alarm(0);
649: };
650: if ($failed) {
651: return undef;
652: } else {
653: return 1;
654: }
655: }
656:
657: # ---------------------------------------------------------- Append Environment
658:
659: sub appenv {
660: my ($newenv,$roles) = @_;
661: if (ref($newenv) eq 'HASH') {
662: foreach my $key (keys(%{$newenv})) {
663: my $refused = 0;
664: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
665: $refused = 1;
666: if (ref($roles) eq 'ARRAY') {
667: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
668: if (grep(/^\Q$role\E$/,@{$roles})) {
669: $refused = 0;
670: }
671: }
672: }
673: if ($refused) {
674: &logthis("<font color=\"blue\">WARNING: ".
675: "Attempt to modify environment ".$key." to ".$newenv->{$key}
676: .'</font>');
677: delete($newenv->{$key});
678: } else {
679: $env{$key}=$newenv->{$key};
680: }
681: }
682: my $opened = open(my $env_file,'+<',$env{'user.environment'});
683: if ($opened
684: && &timed_flock($env_file,LOCK_EX)
685: &&
686: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
687: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
688: while (my ($key,$value) = each(%{$newenv})) {
689: $disk_env{$key} = $value;
690: }
691: untie(%disk_env);
692: }
693: }
694: return 'ok';
695: }
696: # ----------------------------------------------------- Delete from Environment
697:
698: sub delenv {
699: my ($delthis,$regexp,$roles) = @_;
700: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
701: my $refused = 1;
702: if (ref($roles) eq 'ARRAY') {
703: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
704: if (grep(/^\Q$role\E$/,@{$roles})) {
705: $refused = 0;
706: }
707: }
708: if ($refused) {
709: &logthis("<font color=\"blue\">WARNING: ".
710: "Attempt to delete from environment ".$delthis);
711: return 'error';
712: }
713: }
714: my $opened = open(my $env_file,'+<',$env{'user.environment'});
715: if ($opened
716: && &timed_flock($env_file,LOCK_EX)
717: &&
718: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
719: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
720: foreach my $key (keys(%disk_env)) {
721: if ($regexp) {
722: if ($key=~/^$delthis/) {
723: delete($env{$key});
724: delete($disk_env{$key});
725: }
726: } else {
727: if ($key=~/^\Q$delthis\E/) {
728: delete($env{$key});
729: delete($disk_env{$key});
730: }
731: }
732: }
733: untie(%disk_env);
734: }
735: return 'ok';
736: }
737:
738: sub get_env_multiple {
739: my ($name) = @_;
740: my @values;
741: if (defined($env{$name})) {
742: # exists is it an array
743: if (ref($env{$name})) {
744: @values=@{ $env{$name} };
745: } else {
746: $values[0]=$env{$name};
747: }
748: }
749: return(@values);
750: }
751:
752: # ------------------------------------------------------------------- Locking
753:
754: sub set_lock {
755: my ($text)=@_;
756: $locknum++;
757: my $id=$$.'-'.$locknum;
758: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
759: 'session.lock.'.$id => $text});
760: return $id;
761: }
762:
763: sub get_locks {
764: my $num=0;
765: my %texts=();
766: foreach my $lock (split(/\,/,$env{'session.locks'})) {
767: if ($lock=~/\w/) {
768: $num++;
769: $texts{$lock}=$env{'session.lock.'.$lock};
770: }
771: }
772: return ($num,%texts);
773: }
774:
775: sub remove_lock {
776: my ($id)=@_;
777: my $newlocks='';
778: foreach my $lock (split(/\,/,$env{'session.locks'})) {
779: if (($lock=~/\w/) && ($lock ne $id)) {
780: $newlocks.=','.$lock;
781: }
782: }
783: &appenv({'session.locks' => $newlocks});
784: &delenv('session.lock.'.$id);
785: }
786:
787: sub remove_all_locks {
788: my $activelocks=$env{'session.locks'};
789: foreach my $lock (split(/\,/,$env{'session.locks'})) {
790: if ($lock=~/\w/) {
791: &remove_lock($lock);
792: }
793: }
794: }
795:
796:
797: # ------------------------------------------ Find out current server userload
798: sub userload {
799: my $numusers=0;
800: {
801: opendir(LONIDS,$perlvar{'lonIDsDir'});
802: my $filename;
803: my $curtime=time;
804: while ($filename=readdir(LONIDS)) {
805: next if ($filename eq '.' || $filename eq '..');
806: next if ($filename =~ /publicuser_\d+\.id/);
807: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
808: if ($curtime-$mtime < 1800) { $numusers++; }
809: }
810: closedir(LONIDS);
811: }
812: my $userloadpercent=0;
813: my $maxuserload=$perlvar{'lonUserLoadLim'};
814: if ($maxuserload) {
815: $userloadpercent=100*$numusers/$maxuserload;
816: }
817: $userloadpercent=sprintf("%.2f",$userloadpercent);
818: return $userloadpercent;
819: }
820:
821: # ------------------------------ Find server with least workload from spare.tab
822:
823: sub spareserver {
824: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
825: my $spare_server;
826: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
827: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
828: : $userloadpercent;
829: my ($uint_dom,$remotesessions);
830: if (($udom ne '') && (&domain($udom) ne '')) {
831: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
832: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
833: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
834: $remotesessions = $udomdefaults{'remotesessions'};
835: }
836: my $spareshash = &this_host_spares($udom);
837: if (ref($spareshash) eq 'HASH') {
838: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
839: foreach my $try_server (@{ $spareshash->{'primary'} }) {
840: if ($uint_dom) {
841: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
842: $try_server));
843: }
844: ($spare_server, $lowest_load) =
845: &compare_server_load($try_server, $spare_server, $lowest_load);
846: }
847: }
848:
849: my $found_server = ($spare_server ne '' && $lowest_load < 100);
850:
851: if (!$found_server) {
852: if (ref($spareshash->{'default'}) eq 'ARRAY') {
853: foreach my $try_server (@{ $spareshash->{'default'} }) {
854: if ($uint_dom) {
855: next unless (&spare_can_host($udom,$uint_dom,
856: $remotesessions,$try_server));
857: }
858: ($spare_server, $lowest_load) =
859: &compare_server_load($try_server, $spare_server, $lowest_load);
860: }
861: }
862: }
863: }
864:
865: if (!$want_server_name) {
866: my $protocol = 'http';
867: if ($protocol{$spare_server} eq 'https') {
868: $protocol = $protocol{$spare_server};
869: }
870: if (defined($spare_server)) {
871: my $hostname = &hostname($spare_server);
872: if (defined($hostname)) {
873: $spare_server = $protocol.'://'.$hostname;
874: }
875: }
876: }
877: return $spare_server;
878: }
879:
880: sub compare_server_load {
881: my ($try_server, $spare_server, $lowest_load) = @_;
882:
883: my $loadans = &reply('load', $try_server);
884: my $userloadans = &reply('userload',$try_server);
885:
886: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
887: return ($spare_server, $lowest_load); #didn't get a number from the server
888: }
889:
890: my $load;
891: if ($loadans =~ /\d/) {
892: if ($userloadans =~ /\d/) {
893: #both are numbers, pick the bigger one
894: $load = ($loadans > $userloadans) ? $loadans
895: : $userloadans;
896: } else {
897: $load = $loadans;
898: }
899: } else {
900: $load = $userloadans;
901: }
902:
903: if (($load =~ /\d/) && ($load < $lowest_load)) {
904: $spare_server = $try_server;
905: $lowest_load = $load;
906: }
907: return ($spare_server,$lowest_load);
908: }
909:
910: # --------------------------- ask offload servers if user already has a session
911: sub find_existing_session {
912: my ($udom,$uname) = @_;
913: my $spareshash = &this_host_spares($udom);
914: if (ref($spareshash) eq 'HASH') {
915: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
916: foreach my $try_server (@{ $spareshash->{'primary'} }) {
917: return $try_server if (&has_user_session($try_server, $udom, $uname));
918: }
919: }
920: if (ref($spareshash->{'default'}) eq 'ARRAY') {
921: foreach my $try_server (@{ $spareshash->{'default'} }) {
922: return $try_server if (&has_user_session($try_server, $udom, $uname));
923: }
924: }
925: }
926: return;
927: }
928:
929: # -------------------------------- ask if server already has a session for user
930: sub has_user_session {
931: my ($lonid,$udom,$uname) = @_;
932: my $result = &reply(join(':','userhassession',
933: map {&escape($_)} ($udom,$uname)),$lonid);
934: return 1 if ($result eq 'ok');
935:
936: return 0;
937: }
938:
939: # --------- determine least loaded server in a user's domain which allows login
940:
941: sub choose_server {
942: my ($udom,$checkloginvia) = @_;
943: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
944: my %servers = &get_servers($udom);
945: my $lowest_load = 30000;
946: my ($login_host,$hostname,$portal_path,$isredirect);
947: foreach my $lonhost (keys(%servers)) {
948: my $loginvia;
949: if ($checkloginvia) {
950: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
951: if ($loginvia) {
952: my ($server,$path) = split(/:/,$loginvia);
953: ($login_host, $lowest_load) =
954: &compare_server_load($server, $login_host, $lowest_load);
955: if ($login_host eq $server) {
956: $portal_path = $path;
957: $isredirect = 1;
958: }
959: } else {
960: ($login_host, $lowest_load) =
961: &compare_server_load($lonhost, $login_host, $lowest_load);
962: if ($login_host eq $lonhost) {
963: $portal_path = '';
964: $isredirect = '';
965: }
966: }
967: } else {
968: ($login_host, $lowest_load) =
969: &compare_server_load($lonhost, $login_host, $lowest_load);
970: }
971: }
972: if ($login_host ne '') {
973: $hostname = &hostname($login_host);
974: }
975: return ($login_host,$hostname,$portal_path,$isredirect);
976: }
977:
978: # --------------------------------------------- Try to change a user's password
979:
980: sub changepass {
981: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
982: $currentpass = &escape($currentpass);
983: $newpass = &escape($newpass);
984: my $lonhost = $perlvar{'lonHostID'};
985: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
986: $server);
987: if (! $answer) {
988: &logthis("No reply on password change request to $server ".
989: "by $uname in domain $udom.");
990: } elsif ($answer =~ "^ok") {
991: &logthis("$uname in $udom successfully changed their password ".
992: "on $server.");
993: } elsif ($answer =~ "^pwchange_failure") {
994: &logthis("$uname in $udom was unable to change their password ".
995: "on $server. The action was blocked by either lcpasswd ".
996: "or pwchange");
997: } elsif ($answer =~ "^non_authorized") {
998: &logthis("$uname in $udom did not get their password correct when ".
999: "attempting to change it on $server.");
1000: } elsif ($answer =~ "^auth_mode_error") {
1001: &logthis("$uname in $udom attempted to change their password despite ".
1002: "not being locally or internally authenticated on $server.");
1003: } elsif ($answer =~ "^unknown_user") {
1004: &logthis("$uname in $udom attempted to change their password ".
1005: "on $server but were unable to because $server is not ".
1006: "their home server.");
1007: } elsif ($answer =~ "^refused") {
1008: &logthis("$server refused to change $uname in $udom password because ".
1009: "it was sent an unencrypted request to change the password.");
1010: } elsif ($answer =~ "invalid_client") {
1011: &logthis("$server refused to change $uname in $udom password because ".
1012: "it was a reset by e-mail originating from an invalid server.");
1013: }
1014: return $answer;
1015: }
1016:
1017: # ----------------------- Try to determine user's current authentication scheme
1018:
1019: sub queryauthenticate {
1020: my ($uname,$udom)=@_;
1021: my $uhome=&homeserver($uname,$udom);
1022: if (!$uhome) {
1023: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1024: return 'no_host';
1025: }
1026: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1027: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1028: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1029: }
1030: return $answer;
1031: }
1032:
1033: # --------- Try to authenticate user from domain's lib servers (first this one)
1034:
1035: sub authenticate {
1036: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1037: $upass=&escape($upass);
1038: $uname= &LONCAPA::clean_username($uname);
1039: my $uhome=&homeserver($uname,$udom,1);
1040: my $newhome;
1041: if ((!$uhome) || ($uhome eq 'no_host')) {
1042: # Maybe the machine was offline and only re-appeared again recently?
1043: &reconlonc();
1044: # One more
1045: $uhome=&homeserver($uname,$udom,1);
1046: if (($uhome eq 'no_host') && $checkdefauth) {
1047: if (defined(&domain($udom,'primary'))) {
1048: $newhome=&domain($udom,'primary');
1049: }
1050: if ($newhome ne '') {
1051: $uhome = $newhome;
1052: }
1053: }
1054: if ((!$uhome) || ($uhome eq 'no_host')) {
1055: &logthis("User $uname at $udom is unknown in authenticate");
1056: return 'no_host';
1057: }
1058: }
1059: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1060: if ($answer eq 'authorized') {
1061: if ($newhome) {
1062: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1063: return 'no_account_on_host';
1064: } else {
1065: &logthis("User $uname at $udom authorized by $uhome");
1066: return $uhome;
1067: }
1068: }
1069: if ($answer eq 'non_authorized') {
1070: &logthis("User $uname at $udom rejected by $uhome");
1071: return 'no_host';
1072: }
1073: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1074: return 'no_host';
1075: }
1076:
1077: sub can_host_session {
1078: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1079: my $canhost = 1;
1080: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1081: if (ref($remotesessions) eq 'HASH') {
1082: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1083: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1084: $canhost = 0;
1085: } else {
1086: $canhost = 1;
1087: }
1088: }
1089: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1090: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1091: $canhost = 1;
1092: } else {
1093: $canhost = 0;
1094: }
1095: }
1096: if ($canhost) {
1097: if ($remotesessions->{'version'} ne '') {
1098: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1099: if ($reqmajor ne '' && $reqminor ne '') {
1100: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1101: my $major = $1;
1102: my $minor = $2;
1103: if (($major < $reqmajor ) ||
1104: (($major == $reqmajor) && ($minor < $reqminor))) {
1105: $canhost = 0;
1106: }
1107: } else {
1108: $canhost = 0;
1109: }
1110: }
1111: }
1112: }
1113: }
1114: if ($canhost) {
1115: if (ref($hostedsessions) eq 'HASH') {
1116: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1117: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1118: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1119: if (($uint_dom ne '') &&
1120: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1121: $canhost = 0;
1122: } else {
1123: $canhost = 1;
1124: }
1125: }
1126: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1127: if (($uint_dom ne '') &&
1128: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1129: $canhost = 1;
1130: } else {
1131: $canhost = 0;
1132: }
1133: }
1134: }
1135: }
1136: return $canhost;
1137: }
1138:
1139: sub spare_can_host {
1140: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1141: my $canhost=1;
1142: my @intdoms;
1143: my $internet_names = &Apache::lonnet::get_internet_names($try_server);
1144: if (ref($internet_names) eq 'ARRAY') {
1145: @intdoms = @{$internet_names};
1146: }
1147: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1148: my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
1149: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1150: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1151: my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
1152: $canhost = &can_host_session($udom,$try_server,$remoterev,
1153: $remotesessions,
1154: $defdomdefaults{'hostedsessions'});
1155: }
1156: return $canhost;
1157: }
1158:
1159: sub this_host_spares {
1160: my ($dom) = @_;
1161: my ($dom_in_use,$lonhost_in_use,$result);
1162: my @hosts = ¤t_machine_ids();
1163: foreach my $lonhost (@hosts) {
1164: if (&host_domain($lonhost) eq $dom) {
1165: $dom_in_use = $dom;
1166: $lonhost_in_use = $lonhost;
1167: last;
1168: }
1169: }
1170: if ($dom_in_use ne '') {
1171: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1172: }
1173: if (ref($result) ne 'HASH') {
1174: $lonhost_in_use = $perlvar{'lonHostID'};
1175: $dom_in_use = &host_domain($lonhost_in_use);
1176: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1177: if (ref($result) ne 'HASH') {
1178: $result = \%spareid;
1179: }
1180: }
1181: return $result;
1182: }
1183:
1184: sub spares_for_offload {
1185: my ($dom_in_use,$lonhost_in_use) = @_;
1186: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1187: if (defined($cached)) {
1188: return $result;
1189: } else {
1190: my $cachetime = 60*60*24;
1191: my %domconfig =
1192: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1193: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1194: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1195: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1196: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1197: }
1198: }
1199: }
1200: }
1201: return;
1202: }
1203:
1204: sub get_lonbalancer_config {
1205: my ($servers) = @_;
1206: my ($currbalancer,$currtargets);
1207: if (ref($servers) eq 'HASH') {
1208: foreach my $server (keys(%{$servers})) {
1209: my %what = (
1210: spareid => 1,
1211: perlvar => 1,
1212: );
1213: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1214: if ($result eq 'ok') {
1215: if (ref($returnhash) eq 'HASH') {
1216: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1217: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1218: $currbalancer = $server;
1219: $currtargets = {};
1220: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1221: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1222: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1223: }
1224: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1225: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1226: }
1227: }
1228: last;
1229: }
1230: }
1231: }
1232: }
1233: }
1234: }
1235: return ($currbalancer,$currtargets);
1236: }
1237:
1238: sub check_loadbalancing {
1239: my ($uname,$udom) = @_;
1240: my ($is_balancer,$dom_in_use,$homeintdom,$rule_in_effect,
1241: $offloadto,$otherserver);
1242: my $lonhost = $perlvar{'lonHostID'};
1243: my @hosts = ¤t_machine_ids();
1244: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1245: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1246: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1247: my $serverhomedom = &host_domain($lonhost);
1248:
1249: my $cachetime = 60*60*24;
1250:
1251: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1252: $dom_in_use = $udom;
1253: $homeintdom = 1;
1254: } else {
1255: $dom_in_use = $serverhomedom;
1256: }
1257: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1258: unless (defined($cached)) {
1259: my %domconfig =
1260: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1261: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1262: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1263: }
1264: }
1265: if (ref($result) eq 'HASH') {
1266: my $currbalancer = $result->{'lonhost'};
1267: my $currtargets = $result->{'targets'};
1268: my $currrules = $result->{'rules'};
1269: if ($currbalancer ne '') {
1270: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1271: $is_balancer = 1;
1272: }
1273: }
1274: if ($is_balancer) {
1275: if (ref($currrules) eq 'HASH') {
1276: if ($homeintdom) {
1277: if ($uname ne '') {
1278: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1279: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1280: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1281: $rule_in_effect = $currrules->{'_LC_author'};
1282: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1283: $rule_in_effect = $currrules->{'_LC_adv'}
1284: }
1285: }
1286: if ($rule_in_effect eq '') {
1287: my %userenv = &userenvironment($udom,$uname,'inststatus');
1288: if ($userenv{'inststatus'} ne '') {
1289: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1290: my ($othertitle,$usertypes,$types) =
1291: &Apache::loncommon::sorted_inst_types($udom);
1292: if (ref($types) eq 'ARRAY') {
1293: foreach my $type (@{$types}) {
1294: if (grep(/^\Q$type\E$/,@statuses)) {
1295: if (exists($currrules->{$type})) {
1296: $rule_in_effect = $currrules->{$type};
1297: }
1298: }
1299: }
1300: }
1301: } else {
1302: if (exists($currrules->{'default'})) {
1303: $rule_in_effect = $currrules->{'default'};
1304: }
1305: }
1306: }
1307: } else {
1308: if (exists($currrules->{'default'})) {
1309: $rule_in_effect = $currrules->{'default'};
1310: }
1311: }
1312: } else {
1313: if ($currrules->{'_LC_external'} ne '') {
1314: $rule_in_effect = $currrules->{'_LC_external'};
1315: }
1316: }
1317: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1318: $uname,$udom);
1319: }
1320: }
1321: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1322: my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1323: unless (defined($cached)) {
1324: my %domconfig =
1325: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1326: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1327: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1328: }
1329: }
1330: if (ref($result) eq 'HASH') {
1331: my $currbalancer = $result->{'lonhost'};
1332: my $currtargets = $result->{'targets'};
1333: my $currrules = $result->{'rules'};
1334:
1335: if ($currbalancer eq $lonhost) {
1336: $is_balancer = 1;
1337: if (ref($currrules) eq 'HASH') {
1338: if ($currrules->{'_LC_internetdom'} ne '') {
1339: $rule_in_effect = $currrules->{'_LC_internetdom'};
1340: }
1341: }
1342: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1343: $uname,$udom);
1344: }
1345: } else {
1346: if ($perlvar{'lonBalancer'} eq 'yes') {
1347: $is_balancer = 1;
1348: $offloadto = &this_host_spares($dom_in_use);
1349: }
1350: }
1351: } else {
1352: if ($perlvar{'lonBalancer'} eq 'yes') {
1353: $is_balancer = 1;
1354: $offloadto = &this_host_spares($dom_in_use);
1355: }
1356: }
1357: if ($is_balancer) {
1358: my $lowest_load = 30000;
1359: if (ref($offloadto) eq 'HASH') {
1360: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1361: foreach my $try_server (@{$offloadto->{'primary'}}) {
1362: ($otherserver,$lowest_load) =
1363: &compare_server_load($try_server,$otherserver,$lowest_load);
1364: }
1365: }
1366: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1367:
1368: if (!$found_server) {
1369: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1370: foreach my $try_server (@{$offloadto->{'default'}}) {
1371: ($otherserver,$lowest_load) =
1372: &compare_server_load($try_server,$otherserver,$lowest_load);
1373: }
1374: }
1375: }
1376: } elsif (ref($offloadto) eq 'ARRAY') {
1377: if (@{$offloadto} == 1) {
1378: $otherserver = $offloadto->[0];
1379: } elsif (@{$offloadto} > 1) {
1380: foreach my $try_server (@{$offloadto}) {
1381: ($otherserver,$lowest_load) =
1382: &compare_server_load($try_server,$otherserver,$lowest_load);
1383: }
1384: }
1385: }
1386: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1387: $is_balancer = 0;
1388: if ($uname ne '' && $udom ne '') {
1389: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1390:
1391: &appenv({'user.loadbalexempt' => $lonhost,
1392: 'user.loadbalcheck.time' => time});
1393: }
1394: }
1395: }
1396: }
1397: return ($is_balancer,$otherserver);
1398: }
1399:
1400: sub get_loadbalancer_targets {
1401: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1402: my $offloadto;
1403: if ($rule_in_effect eq 'none') {
1404: return [$perlvar{'lonHostID'}];
1405: } elsif ($rule_in_effect eq '') {
1406: $offloadto = $currtargets;
1407: } else {
1408: if ($rule_in_effect eq 'homeserver') {
1409: my $homeserver = &homeserver($uname,$udom);
1410: if ($homeserver ne 'no_host') {
1411: $offloadto = [$homeserver];
1412: }
1413: } elsif ($rule_in_effect eq 'externalbalancer') {
1414: my %domconfig =
1415: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1416: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1417: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1418: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1419: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1420: }
1421: }
1422: } else {
1423: my %servers = &internet_dom_servers($udom);
1424: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1425: if (&hostname($remotebalancer) ne '') {
1426: $offloadto = [$remotebalancer];
1427: }
1428: }
1429: } elsif (&hostname($rule_in_effect) ne '') {
1430: $offloadto = [$rule_in_effect];
1431: }
1432: }
1433: return $offloadto;
1434: }
1435:
1436: sub internet_dom_servers {
1437: my ($dom) = @_;
1438: my (%uniqservers,%servers);
1439: my $primaryserver = &hostname(&domain($dom,'primary'));
1440: my @machinedoms = &machine_domains($primaryserver);
1441: foreach my $mdom (@machinedoms) {
1442: my %currservers = %servers;
1443: my %server = &get_servers($mdom);
1444: %servers = (%currservers,%server);
1445: }
1446: my %by_hostname;
1447: foreach my $id (keys(%servers)) {
1448: push(@{$by_hostname{$servers{$id}}},$id);
1449: }
1450: foreach my $hostname (sort(keys(%by_hostname))) {
1451: if (@{$by_hostname{$hostname}} > 1) {
1452: my $match = 0;
1453: foreach my $id (@{$by_hostname{$hostname}}) {
1454: if (&host_domain($id) eq $dom) {
1455: $uniqservers{$id} = $hostname;
1456: $match = 1;
1457: }
1458: }
1459: unless ($match) {
1460: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1461: }
1462: } else {
1463: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1464: }
1465: }
1466: return %uniqservers;
1467: }
1468:
1469: # ---------------------- Find the homebase for a user from domain's lib servers
1470:
1471: my %homecache;
1472: sub homeserver {
1473: my ($uname,$udom,$ignoreBadCache)=@_;
1474: my $index="$uname:$udom";
1475:
1476: if (exists($homecache{$index})) { return $homecache{$index}; }
1477:
1478: my %servers = &get_servers($udom,'library');
1479: foreach my $tryserver (keys(%servers)) {
1480: next if ($ignoreBadCache ne 'true' &&
1481: exists($badServerCache{$tryserver}));
1482:
1483: my $answer=reply("home:$udom:$uname",$tryserver);
1484: if ($answer eq 'found') {
1485: delete($badServerCache{$tryserver});
1486: return $homecache{$index}=$tryserver;
1487: } elsif ($answer eq 'no_host') {
1488: $badServerCache{$tryserver}=1;
1489: }
1490: }
1491: return 'no_host';
1492: }
1493:
1494: # ------------------------------------- Find the usernames behind a list of IDs
1495:
1496: sub idget {
1497: my ($udom,@ids)=@_;
1498: my %returnhash=();
1499:
1500: my %servers = &get_servers($udom,'library');
1501: foreach my $tryserver (keys(%servers)) {
1502: my $idlist=join('&',@ids);
1503: $idlist=~tr/A-Z/a-z/;
1504: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
1505: my @answer=();
1506: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1507: @answer=split(/\&/,$reply);
1508: } ;
1509: my $i;
1510: for ($i=0;$i<=$#ids;$i++) {
1511: if ($answer[$i]) {
1512: $returnhash{$ids[$i]}=$answer[$i];
1513: }
1514: }
1515: }
1516: return %returnhash;
1517: }
1518:
1519: # ------------------------------------- Find the IDs behind a list of usernames
1520:
1521: sub idrget {
1522: my ($udom,@unames)=@_;
1523: my %returnhash=();
1524: foreach my $uname (@unames) {
1525: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1526: }
1527: return %returnhash;
1528: }
1529:
1530: # ------------------------------- Store away a list of names and associated IDs
1531:
1532: sub idput {
1533: my ($udom,%ids)=@_;
1534: my %servers=();
1535: foreach my $uname (keys(%ids)) {
1536: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1537: my $uhom=&homeserver($uname,$udom);
1538: if ($uhom ne 'no_host') {
1539: my $id=&escape($ids{$uname});
1540: $id=~tr/A-Z/a-z/;
1541: my $esc_unam=&escape($uname);
1542: if ($servers{$uhom}) {
1543: $servers{$uhom}.='&'.$id.'='.$esc_unam;
1544: } else {
1545: $servers{$uhom}=$id.'='.$esc_unam;
1546: }
1547: }
1548: }
1549: foreach my $server (keys(%servers)) {
1550: &critical('idput:'.$udom.':'.$servers{$server},$server);
1551: }
1552: }
1553:
1554: # ------------------------------dump from db file owned by domainconfig user
1555: sub dump_dom {
1556: my ($namespace, $udom, $regexp) = @_;
1557:
1558: $udom ||= $env{'user.domain'};
1559:
1560: return () unless $udom;
1561:
1562: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1563: }
1564:
1565: # ------------------------------------------ get items from domain db files
1566:
1567: sub get_dom {
1568: my ($namespace,$storearr,$udom,$uhome)=@_;
1569: my $items='';
1570: foreach my $item (@$storearr) {
1571: $items.=&escape($item).'&';
1572: }
1573: $items=~s/\&$//;
1574: if (!$udom) {
1575: $udom=$env{'user.domain'};
1576: if (defined(&domain($udom,'primary'))) {
1577: $uhome=&domain($udom,'primary');
1578: } else {
1579: undef($uhome);
1580: }
1581: } else {
1582: if (!$uhome) {
1583: if (defined(&domain($udom,'primary'))) {
1584: $uhome=&domain($udom,'primary');
1585: }
1586: }
1587: }
1588: if ($udom && $uhome && ($uhome ne 'no_host')) {
1589: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1590: my %returnhash;
1591: if ($rep eq '' || $rep =~ /^error: 2 /) {
1592: return %returnhash;
1593: }
1594: my @pairs=split(/\&/,$rep);
1595: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1596: return @pairs;
1597: }
1598: my $i=0;
1599: foreach my $item (@$storearr) {
1600: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1601: $i++;
1602: }
1603: return %returnhash;
1604: } else {
1605: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1606: }
1607: }
1608:
1609: # -------------------------------------------- put items in domain db files
1610:
1611: sub put_dom {
1612: my ($namespace,$storehash,$udom,$uhome)=@_;
1613: if (!$udom) {
1614: $udom=$env{'user.domain'};
1615: if (defined(&domain($udom,'primary'))) {
1616: $uhome=&domain($udom,'primary');
1617: } else {
1618: undef($uhome);
1619: }
1620: } else {
1621: if (!$uhome) {
1622: if (defined(&domain($udom,'primary'))) {
1623: $uhome=&domain($udom,'primary');
1624: }
1625: }
1626: }
1627: if ($udom && $uhome && ($uhome ne 'no_host')) {
1628: my $items='';
1629: foreach my $item (keys(%$storehash)) {
1630: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1631: }
1632: $items=~s/\&$//;
1633: return &reply("putdom:$udom:$namespace:$items",$uhome);
1634: } else {
1635: &logthis("put_dom failed - no homeserver and/or domain");
1636: }
1637: }
1638:
1639: # --------------------- newput for items in db file owned by domainconfig user
1640: sub newput_dom {
1641: my ($namespace,$storehash,$udom) = @_;
1642: my $result;
1643: if (!$udom) {
1644: $udom=$env{'user.domain'};
1645: }
1646: if ($udom) {
1647: my $uname = &get_domainconfiguser($udom);
1648: $result = &newput($namespace,$storehash,$udom,$uname);
1649: }
1650: return $result;
1651: }
1652:
1653: # --------------------- delete for items in db file owned by domainconfig user
1654: sub del_dom {
1655: my ($namespace,$storearr,$udom)=@_;
1656: if (ref($storearr) eq 'ARRAY') {
1657: if (!$udom) {
1658: $udom=$env{'user.domain'};
1659: }
1660: if ($udom) {
1661: my $uname = &get_domainconfiguser($udom);
1662: return &del($namespace,$storearr,$udom,$uname);
1663: }
1664: }
1665: }
1666:
1667: # ----------------------------------construct domainconfig user for a domain
1668: sub get_domainconfiguser {
1669: my ($udom) = @_;
1670: return $udom.'-domainconfig';
1671: }
1672:
1673: sub retrieve_inst_usertypes {
1674: my ($udom) = @_;
1675: my (%returnhash,@order);
1676: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1677: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1678: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1679: %returnhash = %{$domdefs{'inststatustypes'}};
1680: @order = @{$domdefs{'inststatusorder'}};
1681: } else {
1682: if (defined(&domain($udom,'primary'))) {
1683: my $uhome=&domain($udom,'primary');
1684: my $rep=&reply("inst_usertypes:$udom",$uhome);
1685: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1686: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
1687: return (\%returnhash,\@order);
1688: }
1689: my ($hashitems,$orderitems) = split(/:/,$rep);
1690: my @pairs=split(/\&/,$hashitems);
1691: foreach my $item (@pairs) {
1692: my ($key,$value)=split(/=/,$item,2);
1693: $key = &unescape($key);
1694: next if ($key =~ /^error: 2 /);
1695: $returnhash{$key}=&thaw_unescape($value);
1696: }
1697: my @esc_order = split(/\&/,$orderitems);
1698: foreach my $item (@esc_order) {
1699: push(@order,&unescape($item));
1700: }
1701: } else {
1702: &logthis("get_dom failed - no primary domain server for $udom");
1703: }
1704: }
1705: return (\%returnhash,\@order);
1706: }
1707:
1708: sub is_domainimage {
1709: my ($url) = @_;
1710: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
1711: if (&domain($1) ne '') {
1712: return '1';
1713: }
1714: }
1715: return;
1716: }
1717:
1718: sub inst_directory_query {
1719: my ($srch) = @_;
1720: my $udom = $srch->{'srchdomain'};
1721: my %results;
1722: my $homeserver = &domain($udom,'primary');
1723: my $outcome;
1724: if ($homeserver ne '') {
1725: my $queryid=&reply("querysend:instdirsearch:".
1726: &escape($srch->{'srchby'}).':'.
1727: &escape($srch->{'srchterm'}).':'.
1728: &escape($srch->{'srchtype'}),$homeserver);
1729: my $host=&hostname($homeserver);
1730: if ($queryid !~/^\Q$host\E\_/) {
1731: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1732: return;
1733: }
1734: my $response = &get_query_reply($queryid);
1735: my $maxtries = 5;
1736: my $tries = 1;
1737: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1738: $response = &get_query_reply($queryid);
1739: $tries ++;
1740: }
1741:
1742: if (!&error($response) && $response ne 'refused') {
1743: if ($response eq 'unavailable') {
1744: $outcome = $response;
1745: } else {
1746: $outcome = 'ok';
1747: my @matches = split(/\n/,$response);
1748: foreach my $match (@matches) {
1749: my ($key,$value) = split(/=/,$match);
1750: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1751: }
1752: }
1753: }
1754: }
1755: return ($outcome,%results);
1756: }
1757:
1758: sub usersearch {
1759: my ($srch) = @_;
1760: my $dom = $srch->{'srchdomain'};
1761: my %results;
1762: my %libserv = &all_library();
1763: my $query = 'usersearch';
1764: foreach my $tryserver (keys(%libserv)) {
1765: if (&host_domain($tryserver) eq $dom) {
1766: my $host=&hostname($tryserver);
1767: my $queryid=
1768: &reply("querysend:".&escape($query).':'.
1769: &escape($srch->{'srchby'}).':'.
1770: &escape($srch->{'srchtype'}).':'.
1771: &escape($srch->{'srchterm'}),$tryserver);
1772: if ($queryid !~/^\Q$host\E\_/) {
1773: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1774: next;
1775: }
1776: my $reply = &get_query_reply($queryid);
1777: my $maxtries = 1;
1778: my $tries = 1;
1779: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1780: $reply = &get_query_reply($queryid);
1781: $tries ++;
1782: }
1783: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1784: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1785: } else {
1786: my @matches;
1787: if ($reply =~ /\n/) {
1788: @matches = split(/\n/,$reply);
1789: } else {
1790: @matches = split(/\&/,$reply);
1791: }
1792: foreach my $match (@matches) {
1793: my ($uname,$udom,%userhash);
1794: foreach my $entry (split(/:/,$match)) {
1795: my ($key,$value) =
1796: map {&unescape($_);} split(/=/,$entry);
1797: $userhash{$key} = $value;
1798: if ($key eq 'username') {
1799: $uname = $value;
1800: } elsif ($key eq 'domain') {
1801: $udom = $value;
1802: }
1803: }
1804: $results{$uname.':'.$udom} = \%userhash;
1805: }
1806: }
1807: }
1808: }
1809: return %results;
1810: }
1811:
1812: sub get_instuser {
1813: my ($udom,$uname,$id) = @_;
1814: my $homeserver = &domain($udom,'primary');
1815: my ($outcome,%results);
1816: if ($homeserver ne '') {
1817: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1818: &escape($id).':'.&escape($udom),$homeserver);
1819: my $host=&hostname($homeserver);
1820: if ($queryid !~/^\Q$host\E\_/) {
1821: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1822: return;
1823: }
1824: my $response = &get_query_reply($queryid);
1825: my $maxtries = 5;
1826: my $tries = 1;
1827: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1828: $response = &get_query_reply($queryid);
1829: $tries ++;
1830: }
1831: if (!&error($response) && $response ne 'refused') {
1832: if ($response eq 'unavailable') {
1833: $outcome = $response;
1834: } else {
1835: $outcome = 'ok';
1836: my @matches = split(/\n/,$response);
1837: foreach my $match (@matches) {
1838: my ($key,$value) = split(/=/,$match);
1839: $results{&unescape($key)} = &thaw_unescape($value);
1840: }
1841: }
1842: }
1843: }
1844: my %userinfo;
1845: if (ref($results{$uname}) eq 'HASH') {
1846: %userinfo = %{$results{$uname}};
1847: }
1848: return ($outcome,%userinfo);
1849: }
1850:
1851: sub inst_rulecheck {
1852: my ($udom,$uname,$id,$item,$rules) = @_;
1853: my %returnhash;
1854: if ($udom ne '') {
1855: if (ref($rules) eq 'ARRAY') {
1856: @{$rules} = map {&escape($_);} (@{$rules});
1857: my $rulestr = join(':',@{$rules});
1858: my $homeserver=&domain($udom,'primary');
1859: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1860: my $response;
1861: if ($item eq 'username') {
1862: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1863: ':'.&escape($uname).':'.$rulestr,
1864: $homeserver));
1865: } elsif ($item eq 'id') {
1866: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1867: ':'.&escape($id).':'.$rulestr,
1868: $homeserver));
1869: } elsif ($item eq 'selfcreate') {
1870: $response=&unescape(&reply('instselfcreatecheck:'.
1871: &escape($udom).':'.&escape($uname).
1872: ':'.$rulestr,$homeserver));
1873: }
1874: if ($response ne 'refused') {
1875: my @pairs=split(/\&/,$response);
1876: foreach my $item (@pairs) {
1877: my ($key,$value)=split(/=/,$item,2);
1878: $key = &unescape($key);
1879: next if ($key =~ /^error: 2 /);
1880: $returnhash{$key}=&thaw_unescape($value);
1881: }
1882: }
1883: }
1884: }
1885: }
1886: return %returnhash;
1887: }
1888:
1889: sub inst_userrules {
1890: my ($udom,$check) = @_;
1891: my (%ruleshash,@ruleorder);
1892: if ($udom ne '') {
1893: my $homeserver=&domain($udom,'primary');
1894: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1895: my $response;
1896: if ($check eq 'id') {
1897: $response=&reply('instidrules:'.&escape($udom),
1898: $homeserver);
1899: } elsif ($check eq 'email') {
1900: $response=&reply('instemailrules:'.&escape($udom),
1901: $homeserver);
1902: } else {
1903: $response=&reply('instuserrules:'.&escape($udom),
1904: $homeserver);
1905: }
1906: if (($response ne 'refused') && ($response ne 'error') &&
1907: ($response ne 'unknown_cmd') &&
1908: ($response ne 'no_such_host')) {
1909: my ($hashitems,$orderitems) = split(/:/,$response);
1910: my @pairs=split(/\&/,$hashitems);
1911: foreach my $item (@pairs) {
1912: my ($key,$value)=split(/=/,$item,2);
1913: $key = &unescape($key);
1914: next if ($key =~ /^error: 2 /);
1915: $ruleshash{$key}=&thaw_unescape($value);
1916: }
1917: my @esc_order = split(/\&/,$orderitems);
1918: foreach my $item (@esc_order) {
1919: push(@ruleorder,&unescape($item));
1920: }
1921: }
1922: }
1923: }
1924: return (\%ruleshash,\@ruleorder);
1925: }
1926:
1927: # ------------- Get Authentication, Language and User Tools Defaults for Domain
1928:
1929: sub get_domain_defaults {
1930: my ($domain) = @_;
1931: my $cachetime = 60*60*24;
1932: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1933: if (defined($cached)) {
1934: if (ref($result) eq 'HASH') {
1935: return %{$result};
1936: }
1937: }
1938: my %domdefaults;
1939: my %domconfig =
1940: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
1941: 'requestcourses','inststatus',
1942: 'coursedefaults','usersessions'],$domain);
1943: if (ref($domconfig{'defaults'}) eq 'HASH') {
1944: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1945: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1946: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1947: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
1948: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
1949: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
1950: } else {
1951: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1952: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1953: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1954: }
1955: if (ref($domconfig{'quotas'}) eq 'HASH') {
1956: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
1957: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
1958: } else {
1959: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
1960: }
1961: my @usertools = ('aboutme','blog','webdav','portfolio');
1962: foreach my $item (@usertools) {
1963: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
1964: $domdefaults{$item} = $domconfig{'quotas'}{$item};
1965: }
1966: }
1967: }
1968: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
1969: foreach my $item ('official','unofficial','community') {
1970: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
1971: }
1972: }
1973: if (ref($domconfig{'inststatus'}) eq 'HASH') {
1974: foreach my $item ('inststatustypes','inststatusorder') {
1975: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
1976: }
1977: }
1978: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
1979: foreach my $item ('canuse_pdfforms') {
1980: $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
1981: }
1982: }
1983: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1984: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
1985: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
1986: }
1987: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
1988: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
1989: }
1990: }
1991: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1992: $cachetime);
1993: return %domdefaults;
1994: }
1995:
1996: # --------------------------------------------------- Assign a key to a student
1997:
1998: sub assign_access_key {
1999: #
2000: # a valid key looks like uname:udom#comments
2001: # comments are being appended
2002: #
2003: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2004: $kdom=
2005: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2006: $knum=
2007: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2008: $cdom=
2009: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2010: $cnum=
2011: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2012: $udom=$env{'user.name'} unless (defined($udom));
2013: $uname=$env{'user.domain'} unless (defined($uname));
2014: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2015: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2016: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2017: # assigned to this person
2018: # - this should not happen,
2019: # unless something went wrong
2020: # the first time around
2021: # ready to assign
2022: $logentry=$1.'; '.$logentry;
2023: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2024: $kdom,$knum) eq 'ok') {
2025: # key now belongs to user
2026: my $envkey='key.'.$cdom.'_'.$cnum;
2027: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2028: &appenv({'environment.'.$envkey => $ckey});
2029: return 'ok';
2030: } else {
2031: return
2032: 'error: Count not permanently assign key, will need to be re-entered later.';
2033: }
2034: } else {
2035: return 'error: Could not assign key, try again later.';
2036: }
2037: } elsif (!$existing{$ckey}) {
2038: # the key does not exist
2039: return 'error: The key does not exist';
2040: } else {
2041: # the key is somebody else's
2042: return 'error: The key is already in use';
2043: }
2044: }
2045:
2046: # ------------------------------------------ put an additional comment on a key
2047:
2048: sub comment_access_key {
2049: #
2050: # a valid key looks like uname:udom#comments
2051: # comments are being appended
2052: #
2053: my ($ckey,$cdom,$cnum,$logentry)=@_;
2054: $cdom=
2055: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2056: $cnum=
2057: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2058: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2059: if ($existing{$ckey}) {
2060: $existing{$ckey}.='; '.$logentry;
2061: # ready to assign
2062: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2063: $cdom,$cnum) eq 'ok') {
2064: return 'ok';
2065: } else {
2066: return 'error: Count not store comment.';
2067: }
2068: } else {
2069: # the key does not exist
2070: return 'error: The key does not exist';
2071: }
2072: }
2073:
2074: # ------------------------------------------------------ Generate a set of keys
2075:
2076: sub generate_access_keys {
2077: my ($number,$cdom,$cnum,$logentry)=@_;
2078: $cdom=
2079: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2080: $cnum=
2081: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2082: unless (&allowed('mky',$cdom)) { return 0; }
2083: unless (($cdom) && ($cnum)) { return 0; }
2084: if ($number>10000) { return 0; }
2085: sleep(2); # make sure don't get same seed twice
2086: srand(time()^($$+($$<<15))); # from "Programming Perl"
2087: my $total=0;
2088: for (my $i=1;$i<=$number;$i++) {
2089: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2090: sprintf("%lx",int(100000*rand)).'-'.
2091: sprintf("%lx",int(100000*rand));
2092: $newkey=~s/1/g/g; # folks mix up 1 and l
2093: $newkey=~s/0/h/g; # and also 0 and O
2094: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2095: if ($existing{$newkey}) {
2096: $i--;
2097: } else {
2098: if (&put('accesskeys',
2099: { $newkey => '# generated '.localtime().
2100: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2101: '; '.$logentry },
2102: $cdom,$cnum) eq 'ok') {
2103: $total++;
2104: }
2105: }
2106: }
2107: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2108: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2109: return $total;
2110: }
2111:
2112: # ------------------------------------------------------- Validate an accesskey
2113:
2114: sub validate_access_key {
2115: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2116: $cdom=
2117: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2118: $cnum=
2119: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2120: $udom=$env{'user.domain'} unless (defined($udom));
2121: $uname=$env{'user.name'} unless (defined($uname));
2122: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2123: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2124: }
2125:
2126: # ------------------------------------- Find the section of student in a course
2127: sub devalidate_getsection_cache {
2128: my ($udom,$unam,$courseid)=@_;
2129: my $hashid="$udom:$unam:$courseid";
2130: &devalidate_cache_new('getsection',$hashid);
2131: }
2132:
2133: sub courseid_to_courseurl {
2134: my ($courseid) = @_;
2135: #already url style courseid
2136: return $courseid if ($courseid =~ m{^/});
2137:
2138: if (exists($env{'course.'.$courseid.'.num'})) {
2139: my $cnum = $env{'course.'.$courseid.'.num'};
2140: my $cdom = $env{'course.'.$courseid.'.domain'};
2141: return "/$cdom/$cnum";
2142: }
2143:
2144: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2145: if (exists($courseinfo{'num'})) {
2146: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2147: }
2148:
2149: return undef;
2150: }
2151:
2152: sub getsection {
2153: my ($udom,$unam,$courseid)=@_;
2154: my $cachetime=1800;
2155:
2156: my $hashid="$udom:$unam:$courseid";
2157: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2158: if (defined($cached)) { return $result; }
2159:
2160: my %Pending;
2161: my %Expired;
2162: #
2163: # Each role can either have not started yet (pending), be active,
2164: # or have expired.
2165: #
2166: # If there is an active role, we are done.
2167: #
2168: # If there is more than one role which has not started yet,
2169: # choose the one which will start sooner
2170: # If there is one role which has not started yet, return it.
2171: #
2172: # If there is more than one expired role, choose the one which ended last.
2173: # If there is a role which has expired, return it.
2174: #
2175: $courseid = &courseid_to_courseurl($courseid);
2176: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2177: foreach my $key (keys(%roleshash)) {
2178: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2179: my $section=$1;
2180: if ($key eq $courseid.'_st') { $section=''; }
2181: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2182: my $now=time;
2183: if (defined($end) && $end && ($now > $end)) {
2184: $Expired{$end}=$section;
2185: next;
2186: }
2187: if (defined($start) && $start && ($now < $start)) {
2188: $Pending{$start}=$section;
2189: next;
2190: }
2191: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2192: }
2193: #
2194: # Presumedly there will be few matching roles from the above
2195: # loop and the sorting time will be negligible.
2196: if (scalar(keys(%Pending))) {
2197: my ($time) = sort {$a <=> $b} keys(%Pending);
2198: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2199: }
2200: if (scalar(keys(%Expired))) {
2201: my @sorted = sort {$a <=> $b} keys(%Expired);
2202: my $time = pop(@sorted);
2203: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2204: }
2205: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2206: }
2207:
2208: sub save_cache {
2209: &purge_remembered();
2210: #&Apache::loncommon::validate_page();
2211: undef(%env);
2212: undef($env_loaded);
2213: }
2214:
2215: my $to_remember=-1;
2216: my %remembered;
2217: my %accessed;
2218: my $kicks=0;
2219: my $hits=0;
2220: sub make_key {
2221: my ($name,$id) = @_;
2222: if (length($id) > 65
2223: && length(&escape($id)) > 200) {
2224: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2225: }
2226: return &escape($name.':'.$id);
2227: }
2228:
2229: sub devalidate_cache_new {
2230: my ($name,$id,$debug) = @_;
2231: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2232: $id=&make_key($name,$id);
2233: $memcache->delete($id);
2234: delete($remembered{$id});
2235: delete($accessed{$id});
2236: }
2237:
2238: sub is_cached_new {
2239: my ($name,$id,$debug) = @_;
2240: $id=&make_key($name,$id);
2241: if (exists($remembered{$id})) {
2242: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2243: $accessed{$id}=[&gettimeofday()];
2244: $hits++;
2245: return ($remembered{$id},1);
2246: }
2247: my $value = $memcache->get($id);
2248: if (!(defined($value))) {
2249: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2250: return (undef,undef);
2251: }
2252: if ($value eq '__undef__') {
2253: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2254: $value=undef;
2255: }
2256: &make_room($id,$value,$debug);
2257: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2258: return ($value,1);
2259: }
2260:
2261: sub do_cache_new {
2262: my ($name,$id,$value,$time,$debug) = @_;
2263: $id=&make_key($name,$id);
2264: my $setvalue=$value;
2265: if (!defined($setvalue)) {
2266: $setvalue='__undef__';
2267: }
2268: if (!defined($time) ) {
2269: $time=600;
2270: }
2271: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2272: my $result = $memcache->set($id,$setvalue,$time);
2273: if (! $result) {
2274: &logthis("caching of id -> $id failed");
2275: $memcache->disconnect_all();
2276: }
2277: # need to make a copy of $value
2278: &make_room($id,$value,$debug);
2279: return $value;
2280: }
2281:
2282: sub make_room {
2283: my ($id,$value,$debug)=@_;
2284:
2285: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2286: : $value;
2287: if ($to_remember<0) { return; }
2288: $accessed{$id}=[&gettimeofday()];
2289: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2290: my $to_kick;
2291: my $max_time=0;
2292: foreach my $other (keys(%accessed)) {
2293: if (&tv_interval($accessed{$other}) > $max_time) {
2294: $to_kick=$other;
2295: $max_time=&tv_interval($accessed{$other});
2296: }
2297: }
2298: delete($remembered{$to_kick});
2299: delete($accessed{$to_kick});
2300: $kicks++;
2301: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2302: return;
2303: }
2304:
2305: sub purge_remembered {
2306: #&logthis("Tossing ".scalar(keys(%remembered)));
2307: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2308: undef(%remembered);
2309: undef(%accessed);
2310: }
2311: # ------------------------------------- Read an entry from a user's environment
2312:
2313: sub userenvironment {
2314: my ($udom,$unam,@what)=@_;
2315: my $items;
2316: foreach my $item (@what) {
2317: $items.=&escape($item).'&';
2318: }
2319: $items=~s/\&$//;
2320: my %returnhash=();
2321: my $uhome = &homeserver($unam,$udom);
2322: unless ($uhome eq 'no_host') {
2323: my @answer=split(/\&/,
2324: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2325: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2326: return %returnhash;
2327: }
2328: my $i;
2329: for ($i=0;$i<=$#what;$i++) {
2330: $returnhash{$what[$i]}=&unescape($answer[$i]);
2331: }
2332: }
2333: return %returnhash;
2334: }
2335:
2336: # ---------------------------------------------------------- Get a studentphoto
2337: sub studentphoto {
2338: my ($udom,$unam,$ext) = @_;
2339: my $home=&Apache::lonnet::homeserver($unam,$udom);
2340: if (defined($env{'request.course.id'})) {
2341: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2342: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2343: return(&retrievestudentphoto($udom,$unam,$ext));
2344: } else {
2345: my ($result,$perm_reqd)=
2346: &Apache::lonnet::auto_photo_permission($unam,$udom);
2347: if ($result eq 'ok') {
2348: if (!($perm_reqd eq 'yes')) {
2349: return(&retrievestudentphoto($udom,$unam,$ext));
2350: }
2351: }
2352: }
2353: }
2354: } else {
2355: my ($result,$perm_reqd) =
2356: &Apache::lonnet::auto_photo_permission($unam,$udom);
2357: if ($result eq 'ok') {
2358: if (!($perm_reqd eq 'yes')) {
2359: return(&retrievestudentphoto($udom,$unam,$ext));
2360: }
2361: }
2362: }
2363: return '/adm/lonKaputt/lonlogo_broken.gif';
2364: }
2365:
2366: sub retrievestudentphoto {
2367: my ($udom,$unam,$ext,$type) = @_;
2368: my $home=&Apache::lonnet::homeserver($unam,$udom);
2369: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2370: if ($ret eq 'ok') {
2371: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2372: if ($type eq 'thumbnail') {
2373: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2374: }
2375: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2376: return $tokenurl;
2377: } else {
2378: if ($type eq 'thumbnail') {
2379: return '/adm/lonKaputt/genericstudent_tn.gif';
2380: } else {
2381: return '/adm/lonKaputt/lonlogo_broken.gif';
2382: }
2383: }
2384: }
2385:
2386: # -------------------------------------------------------------------- New chat
2387:
2388: sub chatsend {
2389: my ($newentry,$anon,$group)=@_;
2390: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2391: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2392: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2393: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2394: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2395: &escape($newentry)).':'.$group,$chome);
2396: }
2397:
2398: # ------------------------------------------ Find current version of a resource
2399:
2400: sub getversion {
2401: my $fname=&clutter(shift);
2402: unless ($fname=~/^\/res\//) { return -1; }
2403: return ¤tversion(&filelocation('',$fname));
2404: }
2405:
2406: sub currentversion {
2407: my $fname=shift;
2408: my $author=$fname;
2409: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2410: my ($udom,$uname)=split(/\//,$author);
2411: my $home=&homeserver($uname,$udom);
2412: if ($home eq 'no_host') {
2413: return -1;
2414: }
2415: my $answer=&reply("currentversion:$fname",$home);
2416: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2417: return -1;
2418: }
2419: return $answer;
2420: }
2421:
2422: #
2423: # Return special version number of resource if set by override, empty otherwise
2424: #
2425: sub usedversion {
2426: my $fname=shift;
2427: unless ($fname) { $fname=$env{'request.uri'}; }
2428: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2429: if ($urlversion) { return $urlversion; }
2430: return '';
2431: }
2432:
2433: # ----------------------------- Subscribe to a resource, return URL if possible
2434:
2435: sub subscribe {
2436: my $fname=shift;
2437: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2438: $fname=~s/[\n\r]//g;
2439: my $author=$fname;
2440: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2441: my ($udom,$uname)=split(/\//,$author);
2442: my $home=homeserver($uname,$udom);
2443: if ($home eq 'no_host') {
2444: return 'not_found';
2445: }
2446: my $answer=reply("sub:$fname",$home);
2447: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2448: $answer.=' by '.$home;
2449: }
2450: return $answer;
2451: }
2452:
2453: # -------------------------------------------------------------- Replicate file
2454:
2455: sub repcopy {
2456: my $filename=shift;
2457: $filename=~s/\/+/\//g;
2458: my $londocroot = $perlvar{'lonDocRoot'};
2459: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2460: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2461: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2462: $filename=~m{^/*(uploaded|editupload)/}) {
2463: return &repcopy_userfile($filename);
2464: }
2465: $filename=~s/[\n\r]//g;
2466: my $transname="$filename.in.transfer";
2467: # FIXME: this should flock
2468: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2469: my $remoteurl=subscribe($filename);
2470: if ($remoteurl =~ /^con_lost by/) {
2471: &logthis("Subscribe returned $remoteurl: $filename");
2472: return 'unavailable';
2473: } elsif ($remoteurl eq 'not_found') {
2474: #&logthis("Subscribe returned not_found: $filename");
2475: return 'not_found';
2476: } elsif ($remoteurl =~ /^rejected by/) {
2477: &logthis("Subscribe returned $remoteurl: $filename");
2478: return 'forbidden';
2479: } elsif ($remoteurl eq 'directory') {
2480: return 'ok';
2481: } else {
2482: my $author=$filename;
2483: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2484: my ($udom,$uname)=split(/\//,$author);
2485: my $home=homeserver($uname,$udom);
2486: unless ($home eq $perlvar{'lonHostID'}) {
2487: my @parts=split(/\//,$filename);
2488: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2489: if ($path ne "$londocroot/res") {
2490: &logthis("Malconfiguration for replication: $filename");
2491: return 'bad_request';
2492: }
2493: my $count;
2494: for ($count=5;$count<$#parts;$count++) {
2495: $path.="/$parts[$count]";
2496: if ((-e $path)!=1) {
2497: mkdir($path,0777);
2498: }
2499: }
2500: my $ua=new LWP::UserAgent;
2501: my $request=new HTTP::Request('GET',"$remoteurl");
2502: my $response=$ua->request($request,$transname);
2503: if ($response->is_error()) {
2504: unlink($transname);
2505: my $message=$response->status_line;
2506: &logthis("<font color=\"blue\">WARNING:"
2507: ." LWP get: $message: $filename</font>");
2508: return 'unavailable';
2509: } else {
2510: if ($remoteurl!~/\.meta$/) {
2511: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2512: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2513: if ($mresponse->is_error()) {
2514: unlink($filename.'.meta');
2515: &logthis(
2516: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2517: }
2518: }
2519: rename($transname,$filename);
2520: return 'ok';
2521: }
2522: }
2523: }
2524: }
2525:
2526: # ------------------------------------------------ Get server side include body
2527: sub ssi_body {
2528: my ($filelink,%form)=@_;
2529: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2530: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2531: }
2532: my $output='';
2533: my $response;
2534: if ($filelink=~/^https?\:/) {
2535: ($output,$response)=&externalssi($filelink);
2536: } else {
2537: $filelink .= $filelink=~/\?/ ? '&' : '?';
2538: $filelink .= 'inhibitmenu=yes';
2539: ($output,$response)=&ssi($filelink,%form);
2540: }
2541: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2542: $output=~s/^.*?\<body[^\>]*\>//si;
2543: $output=~s/\<\/body\s*\>.*?$//si;
2544: if (wantarray) {
2545: return ($output, $response);
2546: } else {
2547: return $output;
2548: }
2549: }
2550:
2551: # --------------------------------------------------------- Server Side Include
2552:
2553: sub absolute_url {
2554: my ($host_name) = @_;
2555: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2556: if ($host_name eq '') {
2557: $host_name = $ENV{'SERVER_NAME'};
2558: }
2559: return $protocol.$host_name;
2560: }
2561:
2562: #
2563: # Server side include.
2564: # Parameters:
2565: # fn Possibly encrypted resource name/id.
2566: # form Hash that describes how the rendering should be done
2567: # and other things.
2568: # Returns:
2569: # Scalar context: The content of the response.
2570: # Array context: 2 element list of the content and the full response object.
2571: #
2572: sub ssi {
2573:
2574: my ($fn,%form)=@_;
2575: my $ua=new LWP::UserAgent;
2576: my $request;
2577:
2578: $form{'no_update_last_known'}=1;
2579: &Apache::lonenc::check_encrypt(\$fn);
2580: if (%form) {
2581: $request=new HTTP::Request('POST',&absolute_url().$fn);
2582: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
2583: } else {
2584: $request=new HTTP::Request('GET',&absolute_url().$fn);
2585: }
2586:
2587: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2588: my $response= $ua->request($request);
2589: my $content = $response->content;
2590:
2591:
2592: if (wantarray) {
2593: return ($content, $response);
2594: } else {
2595: return $content;
2596: }
2597: }
2598:
2599: sub externalssi {
2600: my ($url)=@_;
2601: my $ua=new LWP::UserAgent;
2602: my $request=new HTTP::Request('GET',$url);
2603: my $response=$ua->request($request);
2604: if (wantarray) {
2605: return ($response->content, $response);
2606: } else {
2607: return $response->content;
2608: }
2609: }
2610:
2611: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2612:
2613: sub allowuploaded {
2614: my ($srcurl,$url)=@_;
2615: $url=&clutter(&declutter($url));
2616: my $dir=$url;
2617: $dir=~s/\/[^\/]+$//;
2618: my %httpref=();
2619: my $httpurl=&hreflocation('',$url);
2620: $httpref{'httpref.'.$httpurl}=$srcurl;
2621: &Apache::lonnet::appenv(\%httpref);
2622: }
2623:
2624: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
2625: # input: action, courseID, current domain, intended
2626: # path to file, source of file, instruction to parse file for objects,
2627: # ref to hash for embedded objects,
2628: # ref to hash for codebase of java objects.
2629: # reference to scalar to accommodate mime type determined
2630: # from File::MMagic if $parser = parse.
2631: #
2632: # output: url to file (if action was uploaddoc),
2633: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
2634: #
2635: # Allows directory structure to be used within lonUsers/../userfiles/ for a
2636: # course.
2637: #
2638: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2639: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
2640: # course's home server.
2641: #
2642: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
2643: # be copied from $source (current location) to
2644: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2645: # and will then be copied to
2646: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
2647: # course's home server.
2648: #
2649: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2650: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
2651: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
2652: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
2653: # in course's home server.
2654: #
2655:
2656: sub process_coursefile {
2657: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
2658: $mimetype)=@_;
2659: my $fetchresult;
2660: my $home=&homeserver($docuname,$docudom);
2661: if ($action eq 'propagate') {
2662: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2663: $home);
2664: } else {
2665: my $fpath = '';
2666: my $fname = $file;
2667: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2668: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2669: my $filepath = &build_filepath($fpath);
2670: if ($action eq 'copy') {
2671: if ($source eq '') {
2672: $fetchresult = 'no source file';
2673: return $fetchresult;
2674: } else {
2675: my $destination = $filepath.'/'.$fname;
2676: rename($source,$destination);
2677: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2678: $home);
2679: }
2680: } elsif ($action eq 'uploaddoc') {
2681: open(my $fh,'>'.$filepath.'/'.$fname);
2682: print $fh $env{'form.'.$source};
2683: close($fh);
2684: if ($parser eq 'parse') {
2685: my $mm = new File::MMagic;
2686: my $type = $mm->checktype_filename($filepath.'/'.$fname);
2687: if ($type eq 'text/html') {
2688: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
2689: unless ($parse_result eq 'ok') {
2690: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
2691: }
2692: }
2693: if (ref($mimetype)) {
2694: $$mimetype = $type;
2695: }
2696: }
2697: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2698: $home);
2699: if ($fetchresult eq 'ok') {
2700: return '/uploaded/'.$fpath.'/'.$fname;
2701: } else {
2702: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2703: ' to host '.$home.': '.$fetchresult);
2704: return '/adm/notfound.html';
2705: }
2706: }
2707: }
2708: unless ( $fetchresult eq 'ok') {
2709: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2710: ' to host '.$home.': '.$fetchresult);
2711: }
2712: return $fetchresult;
2713: }
2714:
2715: sub build_filepath {
2716: my ($fpath) = @_;
2717: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
2718: unless ($fpath eq '') {
2719: my @parts=split('/',$fpath);
2720: foreach my $part (@parts) {
2721: $filepath.= '/'.$part;
2722: if ((-e $filepath)!=1) {
2723: mkdir($filepath,0777);
2724: }
2725: }
2726: }
2727: return $filepath;
2728: }
2729:
2730: sub store_edited_file {
2731: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
2732: my $file = $primary_url;
2733: $file =~ s#^/uploaded/$docudom/$docuname/##;
2734: my $fpath = '';
2735: my $fname = $file;
2736: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
2737: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
2738: my $filepath = &build_filepath($fpath);
2739: open(my $fh,'>'.$filepath.'/'.$fname);
2740: print $fh $content;
2741: close($fh);
2742: my $home=&homeserver($docuname,$docudom);
2743: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
2744: $home);
2745: if ($$fetchresult eq 'ok') {
2746: return '/uploaded/'.$fpath.'/'.$fname;
2747: } else {
2748: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
2749: ' to host '.$home.': '.$$fetchresult);
2750: return '/adm/notfound.html';
2751: }
2752: }
2753:
2754: sub clean_filename {
2755: my ($fname,$args)=@_;
2756: # Replace Windows backslashes by forward slashes
2757: $fname=~s/\\/\//g;
2758: if (!$args->{'keep_path'}) {
2759: # Get rid of everything but the actual filename
2760: $fname=~s/^.*\/([^\/]+)$/$1/;
2761: }
2762: # Replace spaces by underscores
2763: $fname=~s/\s+/\_/g;
2764: # Replace all other weird characters by nothing
2765: $fname=~s{[^/\w\.\-]}{}g;
2766: # Replace all .\d. sequences with _\d. so they no longer look like version
2767: # numbers
2768: $fname=~s/\.(\d+)(?=\.)/_$1/g;
2769: return $fname;
2770: }
2771: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
2772: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
2773: # image with the same aspect ratio as the original, but with dimensions which do
2774: # not exceed $resizewidth and $resizeheight.
2775:
2776: sub resizeImage {
2777: my ($img_path,$resizewidth,$resizeheight) = @_;
2778: my $ima = Image::Magick->new;
2779: my $resized;
2780: if (-e $img_path) {
2781: $ima->Read($img_path);
2782: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
2783: my $width = $ima->Get('width');
2784: my $height = $ima->Get('height');
2785: if ($width > $resizewidth) {
2786: my $factor = $width/$resizewidth;
2787: my $newheight = $height/$factor;
2788: $ima->Scale(width=>$resizewidth,height=>$newheight);
2789: $resized = 1;
2790: }
2791: }
2792: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
2793: my $width = $ima->Get('width');
2794: my $height = $ima->Get('height');
2795: if ($height > $resizeheight) {
2796: my $factor = $height/$resizeheight;
2797: my $newwidth = $width/$factor;
2798: $ima->Scale(width=>$newwidth,height=>$resizeheight);
2799: $resized = 1;
2800: }
2801: }
2802: if ($resized) {
2803: $ima->Write($img_path);
2804: }
2805: }
2806: return;
2807: }
2808:
2809: # --------------- Take an uploaded file and put it into the userfiles directory
2810: # input: $formname - the contents of the file are in $env{"form.$formname"}
2811: # the desired filename is in $env{"form.$formname.filename"}
2812: # $context - possible values: coursedoc, existingfile, overwrite,
2813: # canceloverwrite, or ''.
2814: # if 'coursedoc': upload to the current course
2815: # if 'existingfile': write file to tmp/overwrites directory
2816: # if 'canceloverwrite': delete file written to tmp/overwrites directory
2817: # $context is passed as argument to &finishuserfileupload
2818: # $subdir - directory in userfile to store the file into
2819: # $parser - instruction to parse file for objects ($parser = parse)
2820: # $allfiles - reference to hash for embedded objects
2821: # $codebase - reference to hash for codebase of java objects
2822: # $desuname - username for permanent storage of uploaded file
2823: # $dsetudom - domain for permanaent storage of uploaded file
2824: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
2825: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
2826: # $resizewidth - width (pixels) to which to resize uploaded image
2827: # $resizeheight - height (pixels) to which to resize uploaded image
2828: # $mimetype - reference to scalar to accommodate mime type determined
2829: # from File::MMagic.
2830: #
2831: # output: url of file in userspace, or error: <message>
2832: # or /adm/notfound.html if failure to upload occurse
2833:
2834: sub userfileupload {
2835: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
2836: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
2837: if (!defined($subdir)) { $subdir='unknown'; }
2838: my $fname=$env{'form.'.$formname.'.filename'};
2839: $fname=&clean_filename($fname);
2840: # See if there is anything left
2841: unless ($fname) { return 'error: no uploaded file'; }
2842: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
2843: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
2844: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
2845: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2846: my $now = time;
2847: my $filepath;
2848: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
2849: $filepath = 'tmp/helprequests/'.$now;
2850: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
2851: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2852: '_'.$env{'user.domain'}.'/pending';
2853: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
2854: my ($docuname,$docudom);
2855: if ($destudom) {
2856: $docudom = $destudom;
2857: } else {
2858: $docudom = $env{'user.domain'};
2859: }
2860: if ($destuname) {
2861: $docuname = $destuname;
2862: } else {
2863: $docuname = $env{'user.name'};
2864: }
2865: if (exists($env{'form.group'})) {
2866: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2867: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2868: }
2869: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
2870: if ($context eq 'canceloverwrite') {
2871: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
2872: if (-e $tempfile) {
2873: my @info = stat($tempfile);
2874: if ($info[9] eq $env{'form.timestamp'}) {
2875: unlink($tempfile);
2876: }
2877: }
2878: return;
2879: }
2880: }
2881: # Create the directory if not present
2882: my @parts=split(/\//,$filepath);
2883: my $fullpath = $perlvar{'lonDaemons'};
2884: for (my $i=0;$i<@parts;$i++) {
2885: $fullpath .= '/'.$parts[$i];
2886: if ((-e $fullpath)!=1) {
2887: mkdir($fullpath,0777);
2888: }
2889: }
2890: open(my $fh,'>'.$fullpath.'/'.$fname);
2891: print $fh $env{'form.'.$formname};
2892: close($fh);
2893: if ($context eq 'existingfile') {
2894: my @info = stat($fullpath.'/'.$fname);
2895: return ($fullpath.'/'.$fname,$info[9]);
2896: } else {
2897: return $fullpath.'/'.$fname;
2898: }
2899: }
2900: if ($subdir eq 'scantron') {
2901: $fname = 'scantron_orig_'.$fname;
2902: } else {
2903: $fname="$subdir/$fname";
2904: }
2905: if ($context eq 'coursedoc') {
2906: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2907: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2908: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2909: return &finishuserfileupload($docuname,$docudom,
2910: $formname,$fname,$parser,$allfiles,
2911: $codebase,$thumbwidth,$thumbheight,
2912: $resizewidth,$resizeheight,$context,$mimetype);
2913: } else {
2914: $fname=$env{'form.folder'}.'/'.$fname;
2915: return &process_coursefile('uploaddoc',$docuname,$docudom,
2916: $fname,$formname,$parser,
2917: $allfiles,$codebase,$mimetype);
2918: }
2919: } elsif (defined($destuname)) {
2920: my $docuname=$destuname;
2921: my $docudom=$destudom;
2922: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2923: $parser,$allfiles,$codebase,
2924: $thumbwidth,$thumbheight,
2925: $resizewidth,$resizeheight,$context,$mimetype);
2926: } else {
2927: my $docuname=$env{'user.name'};
2928: my $docudom=$env{'user.domain'};
2929: if (exists($env{'form.group'})) {
2930: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2931: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2932: }
2933: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2934: $parser,$allfiles,$codebase,
2935: $thumbwidth,$thumbheight,
2936: $resizewidth,$resizeheight,$context,$mimetype);
2937: }
2938: }
2939:
2940: sub finishuserfileupload {
2941: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2942: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
2943: my $path=$docudom.'/'.$docuname.'/';
2944: my $filepath=$perlvar{'lonDocRoot'};
2945:
2946: my ($fnamepath,$file,$fetchthumb);
2947: $file=$fname;
2948: if ($fname=~m|/|) {
2949: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2950: $path.=$fnamepath.'/';
2951: }
2952: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2953: my $count;
2954: for ($count=4;$count<=$#parts;$count++) {
2955: $filepath.="/$parts[$count]";
2956: if ((-e $filepath)!=1) {
2957: mkdir($filepath,0777);
2958: }
2959: }
2960:
2961: # Save the file
2962: {
2963: if (!open(FH,'>'.$filepath.'/'.$file)) {
2964: &logthis('Failed to create '.$filepath.'/'.$file);
2965: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2966: return '/adm/notfound.html';
2967: }
2968: if ($context eq 'overwrite') {
2969: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
2970: my $target = $filepath.'/'.$file;
2971: if (-e $source) {
2972: my @info = stat($source);
2973: if ($info[9] eq $env{'form.timestamp'}) {
2974: unless (&File::Copy::move($source,$target)) {
2975: &logthis('Failed to overwrite '.$filepath.'/'.$file);
2976: return "Moving from $source failed";
2977: }
2978: } else {
2979: return "Temporary file: $source had unexpected date/time for last modification";
2980: }
2981: } else {
2982: return "Temporary file: $source missing";
2983: }
2984: } elsif (!print FH ($env{'form.'.$formname})) {
2985: &logthis('Failed to write to '.$filepath.'/'.$file);
2986: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2987: return '/adm/notfound.html';
2988: }
2989: close(FH);
2990: if ($resizewidth && $resizeheight) {
2991: my $mm = new File::MMagic;
2992: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
2993: if ($mime_type =~ m{^image/}) {
2994: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
2995: }
2996: }
2997: }
2998: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
2999: if (ref($mimetype)) {
3000: if ($$mimetype eq '') {
3001: my $mm = new File::MMagic;
3002: my $type = $mm->checktype_filename($filepath.'/'.$file);
3003: $$mimetype = $type;
3004: }
3005: }
3006: }
3007: if ($parser eq 'parse') {
3008: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3009: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3010: $allfiles,$codebase);
3011: unless ($parse_result eq 'ok') {
3012: &logthis('Failed to parse '.$filepath.$file.
3013: ' for embedded media: '.$parse_result);
3014: }
3015: }
3016: }
3017: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3018: my $input = $filepath.'/'.$file;
3019: my $output = $filepath.'/'.'tn-'.$file;
3020: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3021: system("convert -sample $thumbsize $input $output");
3022: if (-e $filepath.'/'.'tn-'.$file) {
3023: $fetchthumb = 1;
3024: }
3025: }
3026:
3027: # Notify homeserver to grep it
3028: #
3029: my $docuhome=&homeserver($docuname,$docudom);
3030: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3031: if ($fetchresult eq 'ok') {
3032: if ($fetchthumb) {
3033: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3034: if ($thumbresult ne 'ok') {
3035: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3036: $docuhome.': '.$thumbresult);
3037: }
3038: }
3039: #
3040: # Return the URL to it
3041: return '/uploaded/'.$path.$file;
3042: } else {
3043: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3044: ': '.$fetchresult);
3045: return '/adm/notfound.html';
3046: }
3047: }
3048:
3049: sub extract_embedded_items {
3050: my ($fullpath,$allfiles,$codebase,$content) = @_;
3051: my @state = ();
3052: my (%lastids,%related,%shockwave,%flashvars);
3053: my %javafiles = (
3054: codebase => '',
3055: code => '',
3056: archive => ''
3057: );
3058: my %mediafiles = (
3059: src => '',
3060: movie => '',
3061: );
3062: my $p;
3063: if ($content) {
3064: $p = HTML::LCParser->new($content);
3065: } else {
3066: $p = HTML::LCParser->new($fullpath);
3067: }
3068: while (my $t=$p->get_token()) {
3069: if ($t->[0] eq 'S') {
3070: my ($tagname, $attr) = ($t->[1],$t->[2]);
3071: push(@state, $tagname);
3072: if (lc($tagname) eq 'allow') {
3073: &add_filetype($allfiles,$attr->{'src'},'src');
3074: }
3075: if (lc($tagname) eq 'img') {
3076: &add_filetype($allfiles,$attr->{'src'},'src');
3077: }
3078: if (lc($tagname) eq 'a') {
3079: &add_filetype($allfiles,$attr->{'href'},'href');
3080: }
3081: if (lc($tagname) eq 'script') {
3082: my $src;
3083: if ($attr->{'archive'} =~ /\.jar$/i) {
3084: &add_filetype($allfiles,$attr->{'archive'},'archive');
3085: } else {
3086: if ($attr->{'src'} ne '') {
3087: $src = $attr->{'src'};
3088: &add_filetype($allfiles,$src,'src');
3089: }
3090: }
3091: my $text = $p->get_trimmed_text();
3092: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3093: my @swfargs = split(/,/,$1);
3094: foreach my $item (@swfargs) {
3095: $item =~ s/["']//g;
3096: $item =~ s/^\s+//;
3097: $item =~ s/\s+$//;
3098: }
3099: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3100: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3101: push(@{$related{$swfargs[0]}},$swfargs[2]);
3102: } else {
3103: $related{$swfargs[0]} = [$swfargs[2]];
3104: }
3105: }
3106: }
3107: }
3108: if (lc($tagname) eq 'link') {
3109: if (lc($attr->{'rel'}) eq 'stylesheet') {
3110: &add_filetype($allfiles,$attr->{'href'},'href');
3111: }
3112: }
3113: if (lc($tagname) eq 'object' ||
3114: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3115: foreach my $item (keys(%javafiles)) {
3116: $javafiles{$item} = '';
3117: }
3118: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3119: $lastids{lc($tagname)} = $attr->{'id'};
3120: }
3121: }
3122: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3123: my $name = lc($attr->{'name'});
3124: foreach my $item (keys(%javafiles)) {
3125: if ($name eq $item) {
3126: $javafiles{$item} = $attr->{'value'};
3127: last;
3128: }
3129: }
3130: my $pathfrom;
3131: foreach my $item (keys(%mediafiles)) {
3132: if ($name eq $item) {
3133: $pathfrom = $attr->{'value'};
3134: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3135: &add_filetype($allfiles,$pathfrom,$name);
3136: last;
3137: }
3138: }
3139: if ($name eq 'flashvars') {
3140: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3141: }
3142: if ($pathfrom ne '') {
3143: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3144: $pathfrom);
3145: }
3146: }
3147: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3148: foreach my $item (keys(%javafiles)) {
3149: if ($attr->{$item}) {
3150: $javafiles{$item} = $attr->{$item};
3151: last;
3152: }
3153: }
3154: foreach my $item (keys(%mediafiles)) {
3155: if ($attr->{$item}) {
3156: &add_filetype($allfiles,$attr->{$item},$item);
3157: last;
3158: }
3159: }
3160: if (lc($tagname) eq 'embed') {
3161: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3162: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3163: $attr->{'src'});
3164: }
3165: }
3166: }
3167: if ($t->[4] =~ m{/>$}) {
3168: pop(@state);
3169: }
3170: } elsif ($t->[0] eq 'E') {
3171: my ($tagname) = ($t->[1]);
3172: if ($javafiles{'codebase'} ne '') {
3173: $javafiles{'codebase'} .= '/';
3174: }
3175: if (lc($tagname) eq 'applet' ||
3176: lc($tagname) eq 'object' ||
3177: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3178: ) {
3179: foreach my $item (keys(%javafiles)) {
3180: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3181: my $file=$javafiles{'codebase'}.$javafiles{$item};
3182: &add_filetype($allfiles,$file,$item);
3183: }
3184: }
3185: }
3186: pop @state;
3187: }
3188: }
3189: foreach my $id (sort(keys(%flashvars))) {
3190: if ($shockwave{$id} ne '') {
3191: my @pairs = split(/\&/,$flashvars{$id});
3192: foreach my $pair (@pairs) {
3193: my ($key,$value) = split(/\=/,$pair);
3194: if ($key eq 'thumb') {
3195: &add_filetype($allfiles,$value,$key);
3196: } elsif ($key eq 'content') {
3197: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3198: my ($ext) = ($value =~ /\.([^.]+)$/);
3199: if ($ext ne '') {
3200: &add_filetype($allfiles,$path.$value,$ext);
3201: }
3202: }
3203: }
3204: }
3205: }
3206: return 'ok';
3207: }
3208:
3209: sub add_filetype {
3210: my ($allfiles,$file,$type)=@_;
3211: if (exists($allfiles->{$file})) {
3212: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3213: push(@{$allfiles->{$file}}, &escape($type));
3214: }
3215: } else {
3216: @{$allfiles->{$file}} = (&escape($type));
3217: }
3218: }
3219:
3220: sub embedded_dependency {
3221: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3222: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3223: if (($identifier ne '') &&
3224: (ref($related->{$identifier}) eq 'ARRAY') &&
3225: ($pathfrom ne '')) {
3226: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3227: foreach my $dep (@{$related->{$identifier}}) {
3228: &add_filetype($allfiles,$path.$dep,'object');
3229: }
3230: }
3231: }
3232: return;
3233: }
3234:
3235: sub removeuploadedurl {
3236: my ($url)=@_;
3237: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3238: return &removeuserfile($uname,$udom,$fname);
3239: }
3240:
3241: sub removeuserfile {
3242: my ($docuname,$docudom,$fname)=@_;
3243: my $home=&homeserver($docuname,$docudom);
3244: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3245: if ($result eq 'ok') {
3246: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3247: my $metafile = $fname.'.meta';
3248: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3249: my $url = "/uploaded/$docudom/$docuname/$fname";
3250: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3251: my $sqlresult =
3252: &update_portfolio_table($docuname,$docudom,$file,
3253: 'portfolio_metadata',$group,
3254: 'delete');
3255: }
3256: }
3257: return $result;
3258: }
3259:
3260: sub mkdiruserfile {
3261: my ($docuname,$docudom,$dir)=@_;
3262: my $home=&homeserver($docuname,$docudom);
3263: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3264: }
3265:
3266: sub renameuserfile {
3267: my ($docuname,$docudom,$old,$new)=@_;
3268: my $home=&homeserver($docuname,$docudom);
3269: my $result = &reply("renameuserfile:$docudom:$docuname:".
3270: &escape("$old").':'.&escape("$new"),$home);
3271: if ($result eq 'ok') {
3272: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3273: my $oldmeta = $old.'.meta';
3274: my $newmeta = $new.'.meta';
3275: my $metaresult =
3276: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3277: my $url = "/uploaded/$docudom/$docuname/$old";
3278: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3279: my $sqlresult =
3280: &update_portfolio_table($docuname,$docudom,$file,
3281: 'portfolio_metadata',$group,
3282: 'delete');
3283: }
3284: }
3285: return $result;
3286: }
3287:
3288: # ------------------------------------------------------------------------- Log
3289:
3290: sub log {
3291: my ($dom,$nam,$hom,$what)=@_;
3292: return critical("log:$dom:$nam:$what",$hom);
3293: }
3294:
3295: # ------------------------------------------------------------------ Course Log
3296: #
3297: # This routine flushes several buffers of non-mission-critical nature
3298: #
3299:
3300: sub flushcourselogs {
3301: &logthis('Flushing log buffers');
3302: #
3303: # course logs
3304: # This is a log of all transactions in a course, which can be used
3305: # for data mining purposes
3306: #
3307: # It also collects the courseid database, which lists last transaction
3308: # times and course titles for all courseids
3309: #
3310: my %courseidbuffer=();
3311: foreach my $crsid (keys(%courselogs)) {
3312: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3313: &escape($courselogs{$crsid}),
3314: $coursehombuf{$crsid}) eq 'ok') {
3315: delete $courselogs{$crsid};
3316: } else {
3317: &logthis('Failed to flush log buffer for '.$crsid);
3318: if (length($courselogs{$crsid})>40000) {
3319: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3320: " exceeded maximum size, deleting.</font>");
3321: delete $courselogs{$crsid};
3322: }
3323: }
3324: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3325: 'description' => $coursedescrbuf{$crsid},
3326: 'inst_code' => $courseinstcodebuf{$crsid},
3327: 'type' => $coursetypebuf{$crsid},
3328: 'owner' => $courseownerbuf{$crsid},
3329: };
3330: }
3331: #
3332: # Write course id database (reverse lookup) to homeserver of courses
3333: # Is used in pickcourse
3334: #
3335: foreach my $crs_home (keys(%courseidbuffer)) {
3336: my $response = &courseidput(&host_domain($crs_home),
3337: $courseidbuffer{$crs_home},
3338: $crs_home,'timeonly');
3339: }
3340: #
3341: # File accesses
3342: # Writes to the dynamic metadata of resources to get hit counts, etc.
3343: #
3344: foreach my $entry (keys(%accesshash)) {
3345: if ($entry =~ /___count$/) {
3346: my ($dom,$name);
3347: ($dom,$name,undef)=
3348: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3349: if (! defined($dom) || $dom eq '' ||
3350: ! defined($name) || $name eq '') {
3351: my $cid = $env{'request.course.id'};
3352: $dom = $env{'request.'.$cid.'.domain'};
3353: $name = $env{'request.'.$cid.'.num'};
3354: }
3355: my $value = $accesshash{$entry};
3356: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
3357: my %temphash=($url => $value);
3358: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
3359: if ($result eq 'ok') {
3360: delete $accesshash{$entry};
3361: }
3362: } else {
3363: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
3364: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
3365: my %temphash=($entry => $accesshash{$entry});
3366: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
3367: delete $accesshash{$entry};
3368: }
3369: }
3370: }
3371: #
3372: # Roles
3373: # Reverse lookup of user roles for course faculty/staff and co-authorship
3374: #
3375: foreach my $entry (keys(%userrolehash)) {
3376: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
3377: split(/\:/,$entry);
3378: if (&Apache::lonnet::put('nohist_userroles',
3379: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
3380: $rudom,$runame) eq 'ok') {
3381: delete $userrolehash{$entry};
3382: }
3383: }
3384: #
3385: # Reverse lookup of domain roles (dc, ad, li, sc, au)
3386: #
3387: my %domrolebuffer = ();
3388: foreach my $entry (keys(%domainrolehash)) {
3389: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
3390: if ($domrolebuffer{$rudom}) {
3391: $domrolebuffer{$rudom}.='&'.&escape($entry).
3392: '='.&escape($domainrolehash{$entry});
3393: } else {
3394: $domrolebuffer{$rudom}.=&escape($entry).
3395: '='.&escape($domainrolehash{$entry});
3396: }
3397: delete $domainrolehash{$entry};
3398: }
3399: foreach my $dom (keys(%domrolebuffer)) {
3400: my %servers = &get_servers($dom,'library');
3401: foreach my $tryserver (keys(%servers)) {
3402: unless (&reply('domroleput:'.$dom.':'.
3403: $domrolebuffer{$dom},$tryserver) eq 'ok') {
3404: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
3405: }
3406: }
3407: }
3408: $dumpcount++;
3409: }
3410:
3411: sub courselog {
3412: my $what=shift;
3413: $what=time.':'.$what;
3414: unless ($env{'request.course.id'}) { return ''; }
3415: $coursedombuf{$env{'request.course.id'}}=
3416: $env{'course.'.$env{'request.course.id'}.'.domain'};
3417: $coursenumbuf{$env{'request.course.id'}}=
3418: $env{'course.'.$env{'request.course.id'}.'.num'};
3419: $coursehombuf{$env{'request.course.id'}}=
3420: $env{'course.'.$env{'request.course.id'}.'.home'};
3421: $coursedescrbuf{$env{'request.course.id'}}=
3422: $env{'course.'.$env{'request.course.id'}.'.description'};
3423: $courseinstcodebuf{$env{'request.course.id'}}=
3424: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
3425: $courseownerbuf{$env{'request.course.id'}}=
3426: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
3427: $coursetypebuf{$env{'request.course.id'}}=
3428: $env{'course.'.$env{'request.course.id'}.'.type'};
3429: if (defined $courselogs{$env{'request.course.id'}}) {
3430: $courselogs{$env{'request.course.id'}}.='&'.$what;
3431: } else {
3432: $courselogs{$env{'request.course.id'}}.=$what;
3433: }
3434: if (length($courselogs{$env{'request.course.id'}})>4048) {
3435: &flushcourselogs();
3436: }
3437: }
3438:
3439: sub courseacclog {
3440: my $fnsymb=shift;
3441: unless ($env{'request.course.id'}) { return ''; }
3442: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
3443: if ($fnsymb=~/$LONCAPA::assess_re/) {
3444: $what.=':POST';
3445: # FIXME: Probably ought to escape things....
3446: foreach my $key (keys(%env)) {
3447: if ($key=~/^form\.(.*)/) {
3448: my $formitem = $1;
3449: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
3450: $what.=':'.$formitem.'='.$env{$key};
3451: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
3452: $what.=':'.$formitem.'='.$env{$key};
3453: }
3454: }
3455: }
3456: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
3457: # FIXME: We should not be depending on a form parameter that someone
3458: # editing lonsearchcat.pm might change in the future.
3459: if ($env{'form.phase'} eq 'course_search') {
3460: $what.= ':POST';
3461: # FIXME: Probably ought to escape things....
3462: foreach my $element ('courseexp','crsfulltext','crsrelated',
3463: 'crsdiscuss') {
3464: $what.=':'.$element.'='.$env{'form.'.$element};
3465: }
3466: }
3467: }
3468: &courselog($what);
3469: }
3470:
3471: sub countacc {
3472: my $url=&declutter(shift);
3473: return if (! defined($url) || $url eq '');
3474: unless ($env{'request.course.id'}) { return ''; }
3475: #
3476: # Mark that this url was used in this course
3477: #
3478: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
3479: #
3480: # Increase the access count for this resource in this child process
3481: #
3482: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
3483: $accesshash{$key}++;
3484: }
3485:
3486: sub linklog {
3487: my ($from,$to)=@_;
3488: $from=&declutter($from);
3489: $to=&declutter($to);
3490: $accesshash{$from.'___'.$to.'___comefrom'}=1;
3491: $accesshash{$to.'___'.$from.'___goto'}=1;
3492: }
3493:
3494: sub statslog {
3495: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
3496: if ($users<2) { return; }
3497: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
3498: 'course' => $env{'request.course.id'},
3499: 'sections' => '"all"',
3500: 'num_students' => $users,
3501: 'part' => $part,
3502: 'symb' => $symb,
3503: 'mean_tries' => $av_attempts,
3504: 'deg_of_diff' => $degdiff});
3505: foreach my $key (keys(%dynstore)) {
3506: $accesshash{$key}=$dynstore{$key};
3507: }
3508: }
3509:
3510: sub userrolelog {
3511: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
3512: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
3513: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3514: $userrolehash
3515: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3516: =$tend.':'.$tstart;
3517: }
3518: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
3519: $userrolehash
3520: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
3521: =$tend.':'.$tstart;
3522: }
3523: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
3524: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
3525: $domainrolehash
3526: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
3527: = $tend.':'.$tstart;
3528: }
3529: }
3530:
3531: sub courserolelog {
3532: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
3533: if (($trole eq 'cc') || ($trole eq 'in') ||
3534: ($trole eq 'ep') || ($trole eq 'ad') ||
3535: ($trole eq 'ta') || ($trole eq 'st') ||
3536: ($trole=~/^cr/) || ($trole eq 'gr') ||
3537: ($trole eq 'co')) {
3538: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
3539: my $cdom = $1;
3540: my $cnum = $2;
3541: my $sec = $3;
3542: my $namespace = 'rolelog';
3543: my %storehash = (
3544: role => $trole,
3545: start => $tstart,
3546: end => $tend,
3547: selfenroll => $selfenroll,
3548: context => $context,
3549: );
3550: if ($trole eq 'gr') {
3551: $namespace = 'groupslog';
3552: $storehash{'group'} = $sec;
3553: } else {
3554: $storehash{'section'} = $sec;
3555: }
3556: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
3557: if (($trole ne 'st') || ($sec ne '')) {
3558: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
3559: }
3560: }
3561: }
3562: return;
3563: }
3564:
3565: sub get_course_adv_roles {
3566: my ($cid,$codes) = @_;
3567: $cid=$env{'request.course.id'} unless (defined($cid));
3568: my %coursehash=&coursedescription($cid);
3569: my $crstype = &Apache::loncommon::course_type($cid);
3570: my %nothide=();
3571: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3572: if ($user !~ /:/) {
3573: $nothide{join(':',split(/[\@]/,$user))}=1;
3574: } else {
3575: $nothide{$user}=1;
3576: }
3577: }
3578: my %returnhash=();
3579: my %dumphash=
3580: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
3581: my $now=time;
3582: my %privileged;
3583: foreach my $entry (keys(%dumphash)) {
3584: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3585: if (($tstart) && ($tstart<0)) { next; }
3586: if (($tend) && ($tend<$now)) { next; }
3587: if (($tstart) && ($now<$tstart)) { next; }
3588: my ($role,$username,$domain,$section)=split(/\:/,$entry);
3589: if ($username eq '' || $domain eq '') { next; }
3590: unless (ref($privileged{$domain}) eq 'HASH') {
3591: my %dompersonnel =
3592: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3593: $privileged{$domain} = {};
3594: foreach my $server (keys(%dompersonnel)) {
3595: if (ref($dompersonnel{$server}) eq 'HASH') {
3596: foreach my $user (keys(%{$dompersonnel{$server}})) {
3597: my ($trole,$uname,$udom) = split(/:/,$user);
3598: $privileged{$udom}{$uname} = 1;
3599: }
3600: }
3601: }
3602: }
3603: if ((exists($privileged{$domain}{$username})) &&
3604: (!$nothide{$username.':'.$domain})) { next; }
3605: if ($role eq 'cr') { next; }
3606: if ($codes) {
3607: if ($section) { $role .= ':'.$section; }
3608: if ($returnhash{$role}) {
3609: $returnhash{$role}.=','.$username.':'.$domain;
3610: } else {
3611: $returnhash{$role}=$username.':'.$domain;
3612: }
3613: } else {
3614: my $key=&plaintext($role,$crstype);
3615: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
3616: if ($returnhash{$key}) {
3617: $returnhash{$key}.=','.$username.':'.$domain;
3618: } else {
3619: $returnhash{$key}=$username.':'.$domain;
3620: }
3621: }
3622: }
3623: return %returnhash;
3624: }
3625:
3626: sub get_my_roles {
3627: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
3628: unless (defined($uname)) { $uname=$env{'user.name'}; }
3629: unless (defined($udom)) { $udom=$env{'user.domain'}; }
3630: my (%dumphash,%nothide);
3631: if ($context eq 'userroles') {
3632: %dumphash = &dump('roles',$udom,$uname);
3633: } else {
3634: %dumphash=
3635: &dump('nohist_userroles',$udom,$uname);
3636: if ($hidepriv) {
3637: my %coursehash=&coursedescription($udom.'_'.$uname);
3638: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3639: if ($user !~ /:/) {
3640: $nothide{join(':',split(/[\@]/,$user))} = 1;
3641: } else {
3642: $nothide{$user} = 1;
3643: }
3644: }
3645: }
3646: }
3647: my %returnhash=();
3648: my $now=time;
3649: my %privileged;
3650: foreach my $entry (keys(%dumphash)) {
3651: my ($role,$tend,$tstart);
3652: if ($context eq 'userroles') {
3653: next if ($entry =~ /^rolesdef/);
3654: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
3655: } else {
3656: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
3657: }
3658: if (($tstart) && ($tstart<0)) { next; }
3659: my $status = 'active';
3660: if (($tend) && ($tend<=$now)) {
3661: $status = 'previous';
3662: }
3663: if (($tstart) && ($now<$tstart)) {
3664: $status = 'future';
3665: }
3666: if (ref($types) eq 'ARRAY') {
3667: if (!grep(/^\Q$status\E$/,@{$types})) {
3668: next;
3669: }
3670: } else {
3671: if ($status ne 'active') {
3672: next;
3673: }
3674: }
3675: my ($rolecode,$username,$domain,$section,$area);
3676: if ($context eq 'userroles') {
3677: ($area,$rolecode) = split(/_/,$entry);
3678: (undef,$domain,$username,$section) = split(/\//,$area);
3679: } else {
3680: ($role,$username,$domain,$section) = split(/\:/,$entry);
3681: }
3682: if (ref($roledoms) eq 'ARRAY') {
3683: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
3684: next;
3685: }
3686: }
3687: if (ref($roles) eq 'ARRAY') {
3688: if (!grep(/^\Q$role\E$/,@{$roles})) {
3689: if ($role =~ /^cr\//) {
3690: if (!grep(/^cr$/,@{$roles})) {
3691: next;
3692: }
3693: } elsif ($role =~ /^gr\//) {
3694: if (!grep(/^gr$/,@{$roles})) {
3695: next;
3696: }
3697: } else {
3698: next;
3699: }
3700: }
3701: }
3702: if ($hidepriv) {
3703: if ($context eq 'userroles') {
3704: if ((&privileged($username,$domain)) &&
3705: (!$nothide{$username.':'.$domain})) {
3706: next;
3707: }
3708: } else {
3709: unless (ref($privileged{$domain}) eq 'HASH') {
3710: my %dompersonnel =
3711: &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
3712: $privileged{$domain} = {};
3713: if (keys(%dompersonnel)) {
3714: foreach my $server (keys(%dompersonnel)) {
3715: if (ref($dompersonnel{$server}) eq 'HASH') {
3716: foreach my $user (keys(%{$dompersonnel{$server}})) {
3717: my ($trole,$uname,$udom) = split(/:/,$user);
3718: $privileged{$udom}{$uname} = $trole;
3719: }
3720: }
3721: }
3722: }
3723: }
3724: if (exists($privileged{$domain}{$username})) {
3725: if (!$nothide{$username.':'.$domain}) {
3726: next;
3727: }
3728: }
3729: }
3730: }
3731: if ($withsec) {
3732: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
3733: $tstart.':'.$tend;
3734: } else {
3735: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
3736: }
3737: }
3738: return %returnhash;
3739: }
3740:
3741: # ----------------------------------------------------- Frontpage Announcements
3742: #
3743: #
3744:
3745: sub postannounce {
3746: my ($server,$text)=@_;
3747: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
3748: unless ($text=~/\w/) { $text=''; }
3749: return &reply('setannounce:'.&escape($text),$server);
3750: }
3751:
3752: sub getannounce {
3753:
3754: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
3755: my $announcement='';
3756: while (my $line = <$fh>) { $announcement .= $line; }
3757: close($fh);
3758: if ($announcement=~/\w/) {
3759: return
3760: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
3761: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
3762: } else {
3763: return '';
3764: }
3765: } else {
3766: return '';
3767: }
3768: }
3769:
3770: # ---------------------------------------------------------- Course ID routines
3771: # Deal with domain's nohist_courseid.db files
3772: #
3773:
3774: sub courseidput {
3775: my ($domain,$storehash,$coursehome,$caller) = @_;
3776: return unless (ref($storehash) eq 'HASH');
3777: my $outcome;
3778: if ($caller eq 'timeonly') {
3779: my $cids = '';
3780: foreach my $item (keys(%$storehash)) {
3781: $cids.=&escape($item).'&';
3782: }
3783: $cids=~s/\&$//;
3784: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
3785: $coursehome);
3786: } else {
3787: my $items = '';
3788: foreach my $item (keys(%$storehash)) {
3789: $items.= &escape($item).'='.
3790: &freeze_escape($$storehash{$item}).'&';
3791: }
3792: $items=~s/\&$//;
3793: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
3794: $coursehome);
3795: }
3796: if ($outcome eq 'unknown_cmd') {
3797: my $what;
3798: foreach my $cid (keys(%$storehash)) {
3799: $what .= &escape($cid).'=';
3800: foreach my $item ('description','inst_code','owner','type') {
3801: $what .= &escape($storehash->{$cid}{$item}).':';
3802: }
3803: $what =~ s/\:$/&/;
3804: }
3805: $what =~ s/\&$//;
3806: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
3807: } else {
3808: return $outcome;
3809: }
3810: }
3811:
3812: sub courseiddump {
3813: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
3814: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
3815: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
3816: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
3817: my $as_hash = 1;
3818: my %returnhash;
3819: if (!$domfilter) { $domfilter=''; }
3820: my %libserv = &all_library();
3821: foreach my $tryserver (keys(%libserv)) {
3822: if ( ( $hostidflag == 1
3823: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
3824: || (!defined($hostidflag)) ) {
3825:
3826: if (($domfilter eq '') ||
3827: (&host_domain($tryserver) eq $domfilter)) {
3828: my $rep;
3829: if (grep { $_ eq $tryserver } current_machine_ids()) {
3830: $rep = LONCAPA::Lond::dump_course_id_handler(
3831: join(":", (&host_domain($tryserver), $sincefilter,
3832: &escape($descfilter), &escape($instcodefilter),
3833: &escape($ownerfilter), &escape($coursefilter),
3834: &escape($typefilter), &escape($regexp_ok),
3835: $as_hash, &escape($selfenrollonly),
3836: &escape($catfilter), $showhidden, $caller,
3837: &escape($cloner), &escape($cc_clone), $cloneonly,
3838: &escape($createdbefore), &escape($createdafter),
3839: &escape($creationcontext), $domcloner)));
3840: } else {
3841: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
3842: $sincefilter.':'.&escape($descfilter).':'.
3843: &escape($instcodefilter).':'.&escape($ownerfilter).
3844: ':'.&escape($coursefilter).':'.&escape($typefilter).
3845: ':'.&escape($regexp_ok).':'.$as_hash.':'.
3846: &escape($selfenrollonly).':'.&escape($catfilter).':'.
3847: $showhidden.':'.$caller.':'.&escape($cloner).':'.
3848: &escape($cc_clone).':'.$cloneonly.':'.
3849: &escape($createdbefore).':'.&escape($createdafter).':'.
3850: &escape($creationcontext).':'.$domcloner,
3851: $tryserver);
3852: }
3853:
3854: my @pairs=split(/\&/,$rep);
3855: foreach my $item (@pairs) {
3856: my ($key,$value)=split(/\=/,$item,2);
3857: $key = &unescape($key);
3858: next if ($key =~ /^error: 2 /);
3859: my $result = &thaw_unescape($value);
3860: if (ref($result) eq 'HASH') {
3861: $returnhash{$key}=$result;
3862: } else {
3863: my @responses = split(/:/,$value);
3864: my @items = ('description','inst_code','owner','type');
3865: for (my $i=0; $i<@responses; $i++) {
3866: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
3867: }
3868: }
3869: }
3870: }
3871: }
3872: }
3873: return %returnhash;
3874: }
3875:
3876: sub courselastaccess {
3877: my ($cdom,$cnum,$hostidref) = @_;
3878: my %returnhash;
3879: if ($cdom && $cnum) {
3880: my $chome = &homeserver($cnum,$cdom);
3881: if ($chome ne 'no_host') {
3882: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
3883: &extract_lastaccess(\%returnhash,$rep);
3884: }
3885: } else {
3886: if (!$cdom) { $cdom=''; }
3887: my %libserv = &all_library();
3888: foreach my $tryserver (keys(%libserv)) {
3889: if (ref($hostidref) eq 'ARRAY') {
3890: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
3891: }
3892: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
3893: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
3894: &extract_lastaccess(\%returnhash,$rep);
3895: }
3896: }
3897: }
3898: return %returnhash;
3899: }
3900:
3901: sub extract_lastaccess {
3902: my ($returnhash,$rep) = @_;
3903: if (ref($returnhash) eq 'HASH') {
3904: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
3905: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
3906: $rep eq '') {
3907: my @pairs=split(/\&/,$rep);
3908: foreach my $item (@pairs) {
3909: my ($key,$value)=split(/\=/,$item,2);
3910: $key = &unescape($key);
3911: next if ($key =~ /^error: 2 /);
3912: $returnhash->{$key} = &thaw_unescape($value);
3913: }
3914: }
3915: }
3916: return;
3917: }
3918:
3919: # ---------------------------------------------------------- DC e-mail
3920:
3921: sub dcmailput {
3922: my ($domain,$msgid,$message,$server)=@_;
3923: my $status = &Apache::lonnet::critical(
3924: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
3925: &escape($message),$server);
3926: return $status;
3927: }
3928:
3929: sub dcmaildump {
3930: my ($dom,$startdate,$enddate,$senders) = @_;
3931: my %returnhash=();
3932:
3933: if (defined(&domain($dom,'primary'))) {
3934: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
3935: &escape($enddate).':';
3936: my @esc_senders=map { &escape($_)} @$senders;
3937: $cmd.=&escape(join('&',@esc_senders));
3938: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
3939: my ($key,$value) = split(/\=/,$line,2);
3940: if (($key) && ($value)) {
3941: $returnhash{&unescape($key)} = &unescape($value);
3942: }
3943: }
3944: }
3945: return %returnhash;
3946: }
3947: # ---------------------------------------------------------- Domain roles
3948:
3949: sub get_domain_roles {
3950: my ($dom,$roles,$startdate,$enddate)=@_;
3951: if ((!defined($startdate)) || ($startdate eq '')) {
3952: $startdate = '.';
3953: }
3954: if ((!defined($enddate)) || ($enddate eq '')) {
3955: $enddate = '.';
3956: }
3957: my $rolelist;
3958: if (ref($roles) eq 'ARRAY') {
3959: $rolelist = join(':',@{$roles});
3960: }
3961: my %personnel = ();
3962:
3963: my %servers = &get_servers($dom,'library');
3964: foreach my $tryserver (keys(%servers)) {
3965: %{$personnel{$tryserver}}=();
3966: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
3967: &escape($startdate).':'.
3968: &escape($enddate).':'.
3969: &escape($rolelist), $tryserver))) {
3970: my ($key,$value) = split(/\=/,$line,2);
3971: if (($key) && ($value)) {
3972: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
3973: }
3974: }
3975: }
3976: return %personnel;
3977: }
3978:
3979: # ----------------------------------------------------------- Interval timing
3980:
3981: {
3982: # Caches needed for speedup of navmaps
3983: # We don't want to cache this for very long at all (5 seconds at most)
3984: #
3985: # The user for whom we cache
3986: my $cachedkey='';
3987: # The cached times for this user
3988: my %cachedtimes=();
3989: # When this was last done
3990: my $cachedtime=();
3991:
3992: sub load_all_first_access {
3993: my ($uname,$udom)=@_;
3994: if (($cachedkey eq $uname.':'.$udom) &&
3995: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
3996: return;
3997: }
3998: $cachedtime=time;
3999: $cachedkey=$uname.':'.$udom;
4000: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4001: }
4002:
4003: sub get_first_access {
4004: my ($type,$argsymb,$argmap)=@_;
4005: my ($symb,$courseid,$udom,$uname)=&whichuser();
4006: if ($argsymb) { $symb=$argsymb; }
4007: my ($map,$id,$res)=&decode_symb($symb);
4008: if ($argmap) { $map = $argmap; }
4009: if ($type eq 'course') {
4010: $res='course';
4011: } elsif ($type eq 'map') {
4012: $res=&symbread($map);
4013: } else {
4014: $res=$symb;
4015: }
4016: &load_all_first_access($uname,$udom);
4017: return $cachedtimes{"$courseid\0$res"};
4018: }
4019:
4020: sub set_first_access {
4021: my ($type,$interval)=@_;
4022: my ($symb,$courseid,$udom,$uname)=&whichuser();
4023: my ($map,$id,$res)=&decode_symb($symb);
4024: if ($type eq 'course') {
4025: $res='course';
4026: } elsif ($type eq 'map') {
4027: $res=&symbread($map);
4028: } else {
4029: $res=$symb;
4030: }
4031: $cachedkey='';
4032: my $firstaccess=&get_first_access($type,$symb,$map);
4033: if (!$firstaccess) {
4034: my $start = time;
4035: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4036: $udom,$uname);
4037: if ($putres eq 'ok') {
4038: &put('timerinterval',{"$courseid\0$res"=>$interval},
4039: $udom,$uname);
4040: &appenv(
4041: {
4042: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4043: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4044: }
4045: );
4046: }
4047: return $putres;
4048: }
4049: return 'already_set';
4050: }
4051: }
4052: # --------------------------------------------- Set Expire Date for Spreadsheet
4053:
4054: sub expirespread {
4055: my ($uname,$udom,$stype,$usymb)=@_;
4056: my $cid=$env{'request.course.id'};
4057: if ($cid) {
4058: my $now=time;
4059: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4060: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4061: $env{'course.'.$cid.'.num'}.
4062: ':nohist_expirationdates:'.
4063: &escape($key).'='.$now,
4064: $env{'course.'.$cid.'.home'})
4065: }
4066: return 'ok';
4067: }
4068:
4069: # ----------------------------------------------------- Devalidate Spreadsheets
4070:
4071: sub devalidate {
4072: my ($symb,$uname,$udom)=@_;
4073: my $cid=$env{'request.course.id'};
4074: if ($cid) {
4075: # delete the stored spreadsheets for
4076: # - the student level sheet of this user in course's homespace
4077: # - the assessment level sheet for this resource
4078: # for this user in user's homespace
4079: # - current conditional state info
4080: my $key=$uname.':'.$udom.':';
4081: my $status=
4082: &del('nohist_calculatedsheets',
4083: [$key.'studentcalc:'],
4084: $env{'course.'.$cid.'.domain'},
4085: $env{'course.'.$cid.'.num'})
4086: .' '.
4087: &del('nohist_calculatedsheets_'.$cid,
4088: [$key.'assesscalc:'.$symb],$udom,$uname);
4089: unless ($status eq 'ok ok') {
4090: &logthis('Could not devalidate spreadsheet '.
4091: $uname.' at '.$udom.' for '.
4092: $symb.': '.$status);
4093: }
4094: &delenv('user.state.'.$cid);
4095: }
4096: }
4097:
4098: sub get_scalar {
4099: my ($string,$end) = @_;
4100: my $value;
4101: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4102: $value = $1;
4103: } elsif ($$string =~ s/^([^&]*?)&//) {
4104: $value = $1;
4105: }
4106: return &unescape($value);
4107: }
4108:
4109: sub array2str {
4110: my (@array) = @_;
4111: my $result=&arrayref2str(\@array);
4112: $result=~s/^__ARRAY_REF__//;
4113: $result=~s/__END_ARRAY_REF__$//;
4114: return $result;
4115: }
4116:
4117: sub arrayref2str {
4118: my ($arrayref) = @_;
4119: my $result='__ARRAY_REF__';
4120: foreach my $elem (@$arrayref) {
4121: if(ref($elem) eq 'ARRAY') {
4122: $result.=&arrayref2str($elem).'&';
4123: } elsif(ref($elem) eq 'HASH') {
4124: $result.=&hashref2str($elem).'&';
4125: } elsif(ref($elem)) {
4126: #print("Got a ref of ".(ref($elem))." skipping.");
4127: } else {
4128: $result.=&escape($elem).'&';
4129: }
4130: }
4131: $result=~s/\&$//;
4132: $result .= '__END_ARRAY_REF__';
4133: return $result;
4134: }
4135:
4136: sub hash2str {
4137: my (%hash) = @_;
4138: my $result=&hashref2str(\%hash);
4139: $result=~s/^__HASH_REF__//;
4140: $result=~s/__END_HASH_REF__$//;
4141: return $result;
4142: }
4143:
4144: sub hashref2str {
4145: my ($hashref)=@_;
4146: my $result='__HASH_REF__';
4147: foreach my $key (sort(keys(%$hashref))) {
4148: if (ref($key) eq 'ARRAY') {
4149: $result.=&arrayref2str($key).'=';
4150: } elsif (ref($key) eq 'HASH') {
4151: $result.=&hashref2str($key).'=';
4152: } elsif (ref($key)) {
4153: $result.='=';
4154: #print("Got a ref of ".(ref($key))." skipping.");
4155: } else {
4156: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4157: }
4158:
4159: if(ref($hashref->{$key}) eq 'ARRAY') {
4160: $result.=&arrayref2str($hashref->{$key}).'&';
4161: } elsif(ref($hashref->{$key}) eq 'HASH') {
4162: $result.=&hashref2str($hashref->{$key}).'&';
4163: } elsif(ref($hashref->{$key})) {
4164: $result.='&';
4165: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4166: } else {
4167: $result.=&escape($hashref->{$key}).'&';
4168: }
4169: }
4170: $result=~s/\&$//;
4171: $result .= '__END_HASH_REF__';
4172: return $result;
4173: }
4174:
4175: sub str2hash {
4176: my ($string)=@_;
4177: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4178: return %$hash;
4179: }
4180:
4181: sub str2hashref {
4182: my ($string) = @_;
4183:
4184: my %hash;
4185:
4186: if($string !~ /^__HASH_REF__/) {
4187: if (! ($string eq '' || !defined($string))) {
4188: $hash{'error'}='Not hash reference';
4189: }
4190: return (\%hash, $string);
4191: }
4192:
4193: $string =~ s/^__HASH_REF__//;
4194:
4195: while($string !~ /^__END_HASH_REF__/) {
4196: #key
4197: my $key='';
4198: if($string =~ /^__HASH_REF__/) {
4199: ($key, $string)=&str2hashref($string);
4200: if(defined($key->{'error'})) {
4201: $hash{'error'}='Bad data';
4202: return (\%hash, $string);
4203: }
4204: } elsif($string =~ /^__ARRAY_REF__/) {
4205: ($key, $string)=&str2arrayref($string);
4206: if($key->[0] eq 'Array reference error') {
4207: $hash{'error'}='Bad data';
4208: return (\%hash, $string);
4209: }
4210: } else {
4211: $string =~ s/^(.*?)=//;
4212: $key=&unescape($1);
4213: }
4214: $string =~ s/^=//;
4215:
4216: #value
4217: my $value='';
4218: if($string =~ /^__HASH_REF__/) {
4219: ($value, $string)=&str2hashref($string);
4220: if(defined($value->{'error'})) {
4221: $hash{'error'}='Bad data';
4222: return (\%hash, $string);
4223: }
4224: } elsif($string =~ /^__ARRAY_REF__/) {
4225: ($value, $string)=&str2arrayref($string);
4226: if($value->[0] eq 'Array reference error') {
4227: $hash{'error'}='Bad data';
4228: return (\%hash, $string);
4229: }
4230: } else {
4231: $value=&get_scalar(\$string,'__END_HASH_REF__');
4232: }
4233: $string =~ s/^&//;
4234:
4235: $hash{$key}=$value;
4236: }
4237:
4238: $string =~ s/^__END_HASH_REF__//;
4239:
4240: return (\%hash, $string);
4241: }
4242:
4243: sub str2array {
4244: my ($string)=@_;
4245: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4246: return @$array;
4247: }
4248:
4249: sub str2arrayref {
4250: my ($string) = @_;
4251: my @array;
4252:
4253: if($string !~ /^__ARRAY_REF__/) {
4254: if (! ($string eq '' || !defined($string))) {
4255: $array[0]='Array reference error';
4256: }
4257: return (\@array, $string);
4258: }
4259:
4260: $string =~ s/^__ARRAY_REF__//;
4261:
4262: while($string !~ /^__END_ARRAY_REF__/) {
4263: my $value='';
4264: if($string =~ /^__HASH_REF__/) {
4265: ($value, $string)=&str2hashref($string);
4266: if(defined($value->{'error'})) {
4267: $array[0] ='Array reference error';
4268: return (\@array, $string);
4269: }
4270: } elsif($string =~ /^__ARRAY_REF__/) {
4271: ($value, $string)=&str2arrayref($string);
4272: if($value->[0] eq 'Array reference error') {
4273: $array[0] ='Array reference error';
4274: return (\@array, $string);
4275: }
4276: } else {
4277: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4278: }
4279: $string =~ s/^&//;
4280:
4281: push(@array, $value);
4282: }
4283:
4284: $string =~ s/^__END_ARRAY_REF__//;
4285:
4286: return (\@array, $string);
4287: }
4288:
4289: # -------------------------------------------------------------------Temp Store
4290:
4291: sub tmpreset {
4292: my ($symb,$namespace,$domain,$stuname) = @_;
4293: if (!$symb) {
4294: $symb=&symbread();
4295: if (!$symb) { $symb= $env{'request.url'}; }
4296: }
4297: $symb=escape($symb);
4298:
4299: if (!$namespace) { $namespace=$env{'request.state'}; }
4300: $namespace=~s/\//\_/g;
4301: $namespace=~s/\W//g;
4302:
4303: if (!$domain) { $domain=$env{'user.domain'}; }
4304: if (!$stuname) { $stuname=$env{'user.name'}; }
4305: if ($domain eq 'public' && $stuname eq 'public') {
4306: $stuname=$ENV{'REMOTE_ADDR'};
4307: }
4308: my $path=LONCAPA::tempdir();
4309: my %hash;
4310: if (tie(%hash,'GDBM_File',
4311: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4312: &GDBM_WRCREAT(),0640)) {
4313: foreach my $key (keys(%hash)) {
4314: if ($key=~ /:$symb/) {
4315: delete($hash{$key});
4316: }
4317: }
4318: }
4319: }
4320:
4321: sub tmpstore {
4322: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4323:
4324: if (!$symb) {
4325: $symb=&symbread();
4326: if (!$symb) { $symb= $env{'request.url'}; }
4327: }
4328: $symb=escape($symb);
4329:
4330: if (!$namespace) {
4331: # I don't think we would ever want to store this for a course.
4332: # it seems this will only be used if we don't have a course.
4333: #$namespace=$env{'request.course.id'};
4334: #if (!$namespace) {
4335: $namespace=$env{'request.state'};
4336: #}
4337: }
4338: $namespace=~s/\//\_/g;
4339: $namespace=~s/\W//g;
4340: if (!$domain) { $domain=$env{'user.domain'}; }
4341: if (!$stuname) { $stuname=$env{'user.name'}; }
4342: if ($domain eq 'public' && $stuname eq 'public') {
4343: $stuname=$ENV{'REMOTE_ADDR'};
4344: }
4345: my $now=time;
4346: my %hash;
4347: my $path=LONCAPA::tempdir();
4348: if (tie(%hash,'GDBM_File',
4349: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4350: &GDBM_WRCREAT(),0640)) {
4351: $hash{"version:$symb"}++;
4352: my $version=$hash{"version:$symb"};
4353: my $allkeys='';
4354: foreach my $key (keys(%$storehash)) {
4355: $allkeys.=$key.':';
4356: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
4357: }
4358: $hash{"$version:$symb:timestamp"}=$now;
4359: $allkeys.='timestamp';
4360: $hash{"$version:keys:$symb"}=$allkeys;
4361: if (untie(%hash)) {
4362: return 'ok';
4363: } else {
4364: return "error:$!";
4365: }
4366: } else {
4367: return "error:$!";
4368: }
4369: }
4370:
4371: # -----------------------------------------------------------------Temp Restore
4372:
4373: sub tmprestore {
4374: my ($symb,$namespace,$domain,$stuname) = @_;
4375:
4376: if (!$symb) {
4377: $symb=&symbread();
4378: if (!$symb) { $symb= $env{'request.url'}; }
4379: }
4380: $symb=escape($symb);
4381:
4382: if (!$namespace) { $namespace=$env{'request.state'}; }
4383:
4384: if (!$domain) { $domain=$env{'user.domain'}; }
4385: if (!$stuname) { $stuname=$env{'user.name'}; }
4386: if ($domain eq 'public' && $stuname eq 'public') {
4387: $stuname=$ENV{'REMOTE_ADDR'};
4388: }
4389: my %returnhash;
4390: $namespace=~s/\//\_/g;
4391: $namespace=~s/\W//g;
4392: my %hash;
4393: my $path=LONCAPA::tempdir();
4394: if (tie(%hash,'GDBM_File',
4395: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4396: &GDBM_READER(),0640)) {
4397: my $version=$hash{"version:$symb"};
4398: $returnhash{'version'}=$version;
4399: my $scope;
4400: for ($scope=1;$scope<=$version;$scope++) {
4401: my $vkeys=$hash{"$scope:keys:$symb"};
4402: my @keys=split(/:/,$vkeys);
4403: my $key;
4404: $returnhash{"$scope:keys"}=$vkeys;
4405: foreach $key (@keys) {
4406: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4407: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
4408: }
4409: }
4410: if (!(untie(%hash))) {
4411: return "error:$!";
4412: }
4413: } else {
4414: return "error:$!";
4415: }
4416: return %returnhash;
4417: }
4418:
4419: # ----------------------------------------------------------------------- Store
4420:
4421: sub store {
4422: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4423: my $home='';
4424:
4425: if ($stuname) { $home=&homeserver($stuname,$domain); }
4426:
4427: $symb=&symbclean($symb);
4428: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4429:
4430: if (!$domain) { $domain=$env{'user.domain'}; }
4431: if (!$stuname) { $stuname=$env{'user.name'}; }
4432:
4433: &devalidate($symb,$stuname,$domain);
4434:
4435: $symb=escape($symb);
4436: if (!$namespace) {
4437: unless ($namespace=$env{'request.course.id'}) {
4438: return '';
4439: }
4440: }
4441: if (!$home) { $home=$env{'user.home'}; }
4442:
4443: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4444: $$storehash{'host'}=$perlvar{'lonHostID'};
4445:
4446: my $namevalue='';
4447: foreach my $key (keys(%$storehash)) {
4448: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4449: }
4450: $namevalue=~s/\&$//;
4451: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
4452: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4453: }
4454:
4455: # -------------------------------------------------------------- Critical Store
4456:
4457: sub cstore {
4458: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4459: my $home='';
4460:
4461: if ($stuname) { $home=&homeserver($stuname,$domain); }
4462:
4463: $symb=&symbclean($symb);
4464: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
4465:
4466: if (!$domain) { $domain=$env{'user.domain'}; }
4467: if (!$stuname) { $stuname=$env{'user.name'}; }
4468:
4469: &devalidate($symb,$stuname,$domain);
4470:
4471: $symb=escape($symb);
4472: if (!$namespace) {
4473: unless ($namespace=$env{'request.course.id'}) {
4474: return '';
4475: }
4476: }
4477: if (!$home) { $home=$env{'user.home'}; }
4478:
4479: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
4480: $$storehash{'host'}=$perlvar{'lonHostID'};
4481:
4482: my $namevalue='';
4483: foreach my $key (keys(%$storehash)) {
4484: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
4485: }
4486: $namevalue=~s/\&$//;
4487: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
4488: return critical
4489: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
4490: }
4491:
4492: # --------------------------------------------------------------------- Restore
4493:
4494: sub restore {
4495: my ($symb,$namespace,$domain,$stuname) = @_;
4496: my $home='';
4497:
4498: if ($stuname) { $home=&homeserver($stuname,$domain); }
4499:
4500: if (!$symb) {
4501: unless ($symb=escape(&symbread())) { return ''; }
4502: } else {
4503: $symb=&escape(&symbclean($symb));
4504: }
4505: if (!$namespace) {
4506: unless ($namespace=$env{'request.course.id'}) {
4507: return '';
4508: }
4509: }
4510: if (!$domain) { $domain=$env{'user.domain'}; }
4511: if (!$stuname) { $stuname=$env{'user.name'}; }
4512: if (!$home) { $home=$env{'user.home'}; }
4513: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
4514:
4515: my %returnhash=();
4516: foreach my $line (split(/\&/,$answer)) {
4517: my ($name,$value)=split(/\=/,$line);
4518: $returnhash{&unescape($name)}=&thaw_unescape($value);
4519: }
4520: my $version;
4521: for ($version=1;$version<=$returnhash{'version'};$version++) {
4522: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
4523: $returnhash{$item}=$returnhash{$version.':'.$item};
4524: }
4525: }
4526: return %returnhash;
4527: }
4528:
4529: # ---------------------------------------------------------- Course Description
4530: #
4531: #
4532:
4533: sub coursedescription {
4534: my ($courseid,$args)=@_;
4535: $courseid=~s/^\///;
4536: $courseid=~s/\_/\//g;
4537: my ($cdomain,$cnum)=split(/\//,$courseid);
4538: my $chome=&homeserver($cnum,$cdomain);
4539: my $normalid=$cdomain.'_'.$cnum;
4540: # need to always cache even if we get errors otherwise we keep
4541: # trying and trying and trying to get the course description.
4542: my %envhash=();
4543: my %returnhash=();
4544:
4545: my $expiretime=600;
4546: if ($env{'request.course.id'} eq $normalid) {
4547: $expiretime=120;
4548: }
4549:
4550: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
4551: if (!$args->{'freshen_cache'}
4552: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
4553: foreach my $key (keys(%env)) {
4554: next if ($key !~ /^\Q$prefix\E(.*)/);
4555: my ($setting) = $1;
4556: $returnhash{$setting} = $env{$key};
4557: }
4558: return %returnhash;
4559: }
4560:
4561: # get the data again
4562:
4563: if (!$args->{'one_time'}) {
4564: $envhash{'course.'.$normalid.'.last_cache'}=time;
4565: }
4566:
4567: if ($chome ne 'no_host') {
4568: %returnhash=&dump('environment',$cdomain,$cnum);
4569: if (!exists($returnhash{'con_lost'})) {
4570: my $username = $env{'user.name'}; # Defult username
4571: if(defined $args->{'user'}) {
4572: $username = $args->{'user'};
4573: }
4574: $returnhash{'home'}= $chome;
4575: $returnhash{'domain'} = $cdomain;
4576: $returnhash{'num'} = $cnum;
4577: if (!defined($returnhash{'type'})) {
4578: $returnhash{'type'} = 'Course';
4579: }
4580: while (my ($name,$value) = each %returnhash) {
4581: $envhash{'course.'.$normalid.'.'.$name}=$value;
4582: }
4583: $returnhash{'url'}=&clutter($returnhash{'url'});
4584: $returnhash{'fn'}=LONCAPA::tempdir() .
4585: $username.'_'.$cdomain.'_'.$cnum;
4586: $envhash{'course.'.$normalid.'.home'}=$chome;
4587: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
4588: $envhash{'course.'.$normalid.'.num'}=$cnum;
4589: }
4590: }
4591: if (!$args->{'one_time'}) {
4592: &appenv(\%envhash);
4593: }
4594: return %returnhash;
4595: }
4596:
4597: sub update_released_required {
4598: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
4599: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
4600: $cid = $env{'request.course.id'};
4601: $cdom = $env{'course.'.$cid.'.domain'};
4602: $cnum = $env{'course.'.$cid.'.num'};
4603: $chome = $env{'course.'.$cid.'.home'};
4604: }
4605: if ($needsrelease) {
4606: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
4607: my $needsupdate;
4608: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
4609: $needsupdate = 1;
4610: } else {
4611: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
4612: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
4613: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
4614: $needsupdate = 1;
4615: }
4616: }
4617: if ($needsupdate) {
4618: my %needshash = (
4619: 'internal.releaserequired' => $needsrelease,
4620: );
4621: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
4622: if ($putresult eq 'ok') {
4623: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
4624: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
4625: if (ref($crsinfo{$cid}) eq 'HASH') {
4626: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
4627: &courseidput($cdom,\%crsinfo,$chome,'notime');
4628: }
4629: }
4630: }
4631: }
4632: return;
4633: }
4634:
4635: # -------------------------------------------------See if a user is privileged
4636:
4637: sub privileged {
4638: my ($username,$domain)=@_;
4639:
4640: my %rolesdump = &dump("roles", $domain, $username) or return 0;
4641: my $now = time;
4642:
4643: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
4644: my ($trole, $tend, $tstart) = split(/_/, $role);
4645: if (($trole eq 'dc') || ($trole eq 'su')) {
4646: return 1 unless ($tend && $tend < $now)
4647: or ($tstart && $tstart > $now);
4648: }
4649: }
4650:
4651: return 0;
4652: }
4653:
4654: # -------------------------------------------------------- Get user privileges
4655:
4656: sub rolesinit {
4657: my ($domain, $username) = @_;
4658: my %userroles = ('user.login.time' => time);
4659: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
4660:
4661: # firstaccess and timerinterval are related to timed maps/resources.
4662: # also, blocking can be triggered by an activating timer
4663: # it's saved in the user's %env.
4664: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
4665: my %timerinterval = &dump('timerinterval', $domain, $username);
4666: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
4667: %timerintchk, %timerintenv);
4668:
4669: foreach my $key (keys(%firstaccess)) {
4670: my ($cid, $rest) = split(/\0/, $key);
4671: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
4672: }
4673:
4674: foreach my $key (keys(%timerinterval)) {
4675: my ($cid,$rest) = split(/\0/,$key);
4676: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
4677: }
4678:
4679: my %allroles=();
4680: my %allgroups=();
4681:
4682: for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
4683: my $role = $rolesdump{$area};
4684: $area =~ s/\_\w\w$//;
4685:
4686: my ($trole, $tend, $tstart, $group_privs);
4687:
4688: if ($role =~ /^cr/) {
4689: # Custom role, defined by a user
4690: # e.g., user.role.cr/msu/smith/mynewrole
4691: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
4692: $trole = $1;
4693: ($tend, $tstart) = split('_', $2);
4694: } else {
4695: $trole = $role;
4696: }
4697: } elsif ($role =~ m|^gr/|) {
4698: # Role of member in a group, defined within a course/community
4699: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
4700: ($trole, $tend, $tstart) = split(/_/, $role);
4701: next if $tstart eq '-1';
4702: ($trole, $group_privs) = split(/\//, $trole);
4703: $group_privs = &unescape($group_privs);
4704: } else {
4705: # Just a normal role, defined in roles.tab
4706: ($trole, $tend, $tstart) = split(/_/,$role);
4707: }
4708:
4709: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
4710: $username);
4711: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
4712:
4713: # role expired or not available yet?
4714: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
4715: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
4716:
4717: next if $area eq '' or $trole eq '';
4718:
4719: my $spec = "$trole.$area";
4720: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
4721:
4722: if ($trole =~ /^cr\//) {
4723: # Custom role, defined by a user
4724: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
4725: } elsif ($trole eq 'gr') {
4726: # Role of a member in a group, defined within a course/community
4727: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
4728: next;
4729: } else {
4730: # Normal role, defined in roles.tab
4731: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
4732: }
4733:
4734: my $cid = $tdomain.'_'.$trest;
4735: unless ($firstaccchk{$cid}) {
4736: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
4737: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
4738: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
4739: $coursetimerstarts{$cid}{$item};
4740: }
4741: }
4742: $firstaccchk{$cid} = 1;
4743: }
4744: unless ($timerintchk{$cid}) {
4745: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
4746: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
4747: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
4748: $coursetimerintervals{$cid}{$item};
4749: }
4750: }
4751: $timerintchk{$cid} = 1;
4752: }
4753: }
4754:
4755: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
4756: \%allroles, \%allgroups);
4757: $env{'user.adv'} = $userroles{'user.adv'};
4758:
4759: return (\%userroles,\%firstaccenv,\%timerintenv);
4760: }
4761:
4762: sub set_arearole {
4763: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
4764: # log the associated role with the area
4765: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
4766: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
4767: }
4768:
4769: sub custom_roleprivs {
4770: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
4771: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
4772: my $homsvr=homeserver($rauthor,$rdomain);
4773: if (&hostname($homsvr) ne '') {
4774: my ($rdummy,$roledef)=
4775: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
4776: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
4777: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
4778: if (defined($syspriv)) {
4779: if ($trest =~ /^$match_community$/) {
4780: $syspriv =~ s/bre\&S//;
4781: }
4782: $$allroles{'cm./'}.=':'.$syspriv;
4783: $$allroles{$spec.'./'}.=':'.$syspriv;
4784: }
4785: if ($tdomain ne '') {
4786: if (defined($dompriv)) {
4787: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
4788: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
4789: }
4790: if (($trest ne '') && (defined($coursepriv))) {
4791: $$allroles{'cm.'.$area}.=':'.$coursepriv;
4792: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
4793: }
4794: }
4795: }
4796: }
4797: }
4798:
4799: sub group_roleprivs {
4800: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
4801: my $access = 1;
4802: my $now = time;
4803: if (($tend!=0) && ($tend<$now)) { $access = 0; }
4804: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
4805: if ($access) {
4806: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
4807: $$allgroups{$course}{$group} .=':'.$group_privs;
4808: }
4809: }
4810:
4811: sub standard_roleprivs {
4812: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
4813: if (defined($pr{$trole.':s'})) {
4814: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
4815: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
4816: }
4817: if ($tdomain ne '') {
4818: if (defined($pr{$trole.':d'})) {
4819: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4820: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
4821: }
4822: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
4823: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
4824: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
4825: }
4826: }
4827: }
4828:
4829: sub set_userprivs {
4830: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
4831: my $author=0;
4832: my $adv=0;
4833: my %grouproles = ();
4834: if (keys(%{$allgroups}) > 0) {
4835: my @groupkeys;
4836: foreach my $role (keys(%{$allroles})) {
4837: push(@groupkeys,$role);
4838: }
4839: if (ref($groups_roles) eq 'HASH') {
4840: foreach my $key (keys(%{$groups_roles})) {
4841: unless (grep(/^\Q$key\E$/,@groupkeys)) {
4842: push(@groupkeys,$key);
4843: }
4844: }
4845: }
4846: if (@groupkeys > 0) {
4847: foreach my $role (@groupkeys) {
4848: my ($trole,$area,$sec,$extendedarea);
4849: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
4850: $trole = $1;
4851: $area = $2;
4852: $sec = $3;
4853: $extendedarea = $area.$sec;
4854: if (exists($$allgroups{$area})) {
4855: foreach my $group (keys(%{$$allgroups{$area}})) {
4856: my $spec = $trole.'.'.$extendedarea;
4857: $grouproles{$spec.'.'.$area.'/'.$group} =
4858: $$allgroups{$area}{$group};
4859: }
4860: }
4861: }
4862: }
4863: }
4864: }
4865: foreach my $group (keys(%grouproles)) {
4866: $$allroles{$group} = $grouproles{$group};
4867: }
4868: foreach my $role (keys(%{$allroles})) {
4869: my %thesepriv;
4870: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
4871: foreach my $item (split(/:/,$$allroles{$role})) {
4872: if ($item ne '') {
4873: my ($privilege,$restrictions)=split(/&/,$item);
4874: if ($restrictions eq '') {
4875: $thesepriv{$privilege}='F';
4876: } elsif ($thesepriv{$privilege} ne 'F') {
4877: $thesepriv{$privilege}.=$restrictions;
4878: }
4879: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
4880: }
4881: }
4882: my $thesestr='';
4883: foreach my $priv (sort(keys(%thesepriv))) {
4884: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
4885: }
4886: $userroles->{'user.priv.'.$role} = $thesestr;
4887: }
4888: return ($author,$adv);
4889: }
4890:
4891: sub role_status {
4892: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
4893: my @pwhere = ();
4894: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
4895: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
4896: unless (!defined($$role) || $$role eq '') {
4897: $$where=join('.',@pwhere);
4898: $$trolecode=$$role.'.'.$$where;
4899: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
4900: $$tstatus='is';
4901: if ($$tstart && $$tstart>$update) {
4902: $$tstatus='future';
4903: if ($$tstart<$now) {
4904: if ($$tstart && $$tstart>$refresh) {
4905: if (($$where ne '') && ($$role ne '')) {
4906: my (%allroles,%allgroups,$group_privs,
4907: %groups_roles,@rolecodes);
4908: my %userroles = (
4909: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
4910: );
4911: @rolecodes = ('cm');
4912: my $spec=$$role.'.'.$$where;
4913: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
4914: if ($$role =~ /^cr\//) {
4915: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
4916: push(@rolecodes,'cr');
4917: } elsif ($$role eq 'gr') {
4918: push(@rolecodes,$$role);
4919: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
4920: $env{'user.name'});
4921: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
4922: (undef,my $group_privs) = split(/\//,$trole);
4923: $group_privs = &unescape($group_privs);
4924: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
4925: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
4926: &get_groups_roles($tdomain,$trest,
4927: \%course_roles,\@rolecodes,
4928: \%groups_roles);
4929: } else {
4930: push(@rolecodes,$$role);
4931: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
4932: }
4933: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
4934: &appenv(\%userroles,\@rolecodes);
4935: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
4936: }
4937: }
4938: $$tstatus = 'is';
4939: }
4940: }
4941: if ($$tend) {
4942: if ($$tend<$update) {
4943: $$tstatus='expired';
4944: } elsif ($$tend<$now) {
4945: $$tstatus='will_not';
4946: }
4947: }
4948: }
4949: }
4950: }
4951:
4952: sub get_groups_roles {
4953: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
4954: return unless((ref($cdom_courseroles) eq 'HASH') &&
4955: (ref($rolecodes) eq 'ARRAY') &&
4956: (ref($groups_roles) eq 'HASH'));
4957: if (keys(%{$cdom_courseroles}) > 0) {
4958: my ($cnum) = ($rest =~ /^($match_courseid)/);
4959: if ($cdom ne '' && $cnum ne '') {
4960: foreach my $key (keys(%{$cdom_courseroles})) {
4961: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
4962: my $crsrole = $1;
4963: my $crssec = $2;
4964: if ($crsrole =~ /^cr/) {
4965: unless (grep(/^cr$/,@{$rolecodes})) {
4966: push(@{$rolecodes},'cr');
4967: }
4968: } else {
4969: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
4970: push(@{$rolecodes},$crsrole);
4971: }
4972: }
4973: my $rolekey = "$crsrole./$cdom/$cnum";
4974: if ($crssec ne '') {
4975: $rolekey .= "/$crssec";
4976: }
4977: $rolekey .= './';
4978: $groups_roles->{$rolekey} = $rolecodes;
4979: }
4980: }
4981: }
4982: }
4983: return;
4984: }
4985:
4986: sub delete_env_groupprivs {
4987: my ($where,$courseroles,$possroles) = @_;
4988: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
4989: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
4990: unless (ref($courseroles->{$udom}) eq 'HASH') {
4991: %{$courseroles->{$udom}} =
4992: &get_my_roles('','','userroles',['active'],
4993: $possroles,[$udom],1);
4994: }
4995: if (ref($courseroles->{$udom}) eq 'HASH') {
4996: foreach my $item (keys(%{$courseroles->{$udom}})) {
4997: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
4998: my $area = '/'.$cdom.'/'.$cnum;
4999: my $privkey = "user.priv.$crsrole.$area";
5000: if ($crssec ne '') {
5001: $privkey .= '/'.$crssec;
5002: }
5003: $privkey .= ".$area/$group";
5004: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5005: }
5006: }
5007: return;
5008: }
5009:
5010: sub check_adhoc_privs {
5011: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5012: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5013: if ($env{$cckey}) {
5014: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5015: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5016: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5017: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5018: }
5019: } else {
5020: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5021: }
5022: }
5023:
5024: sub set_adhoc_privileges {
5025: # role can be cc or ca
5026: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5027: my $area = '/'.$dcdom.'/'.$pickedcourse;
5028: my $spec = $role.'.'.$area;
5029: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5030: $env{'user.name'});
5031: my %ccrole = ();
5032: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5033: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5034: &appenv(\%userroles,[$role,'cm']);
5035: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5036: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5037: &appenv( {'request.role' => $spec,
5038: 'request.role.domain' => $dcdom,
5039: 'request.course.sec' => ''
5040: }
5041: );
5042: my $tadv=0;
5043: if (&allowed('adv') eq 'F') { $tadv=1; }
5044: &appenv({'request.role.adv' => $tadv});
5045: }
5046: }
5047:
5048: # --------------------------------------------------------------- get interface
5049:
5050: sub get {
5051: my ($namespace,$storearr,$udomain,$uname)=@_;
5052: my $items='';
5053: foreach my $item (@$storearr) {
5054: $items.=&escape($item).'&';
5055: }
5056: $items=~s/\&$//;
5057: if (!$udomain) { $udomain=$env{'user.domain'}; }
5058: if (!$uname) { $uname=$env{'user.name'}; }
5059: my $uhome=&homeserver($uname,$udomain);
5060:
5061: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5062: my @pairs=split(/\&/,$rep);
5063: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5064: return @pairs;
5065: }
5066: my %returnhash=();
5067: my $i=0;
5068: foreach my $item (@$storearr) {
5069: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5070: $i++;
5071: }
5072: return %returnhash;
5073: }
5074:
5075: # --------------------------------------------------------------- del interface
5076:
5077: sub del {
5078: my ($namespace,$storearr,$udomain,$uname)=@_;
5079: my $items='';
5080: foreach my $item (@$storearr) {
5081: $items.=&escape($item).'&';
5082: }
5083:
5084: $items=~s/\&$//;
5085: if (!$udomain) { $udomain=$env{'user.domain'}; }
5086: if (!$uname) { $uname=$env{'user.name'}; }
5087: my $uhome=&homeserver($uname,$udomain);
5088: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5089: }
5090:
5091: # -------------------------------------------------------------- dump interface
5092:
5093: sub unserialize {
5094: my ($rep, $escapedkeys) = @_;
5095:
5096: return {} if $rep =~ /^error/;
5097:
5098: my %returnhash=();
5099: foreach my $item (split /\&/, $rep) {
5100: my ($key, $value) = split(/=/, $item, 2);
5101: $key = unescape($key) unless $escapedkeys;
5102: next if $key =~ /^error: 2 /;
5103: $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
5104: }
5105: #return %returnhash;
5106: return \%returnhash;
5107: }
5108:
5109: # see Lond::dump_with_regexp
5110: # if $escapedkeys hash keys won't get unescaped.
5111: sub dump {
5112: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5113: if (!$udomain) { $udomain=$env{'user.domain'}; }
5114: if (!$uname) { $uname=$env{'user.name'}; }
5115: my $uhome=&homeserver($uname,$udomain);
5116:
5117: my $reply;
5118: if (grep { $_ eq $uhome } current_machine_ids()) {
5119: # user is hosted on this machine
5120: $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5121: $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
5122: return %{unserialize($reply, $escapedkeys)};
5123: }
5124: if ($regexp) {
5125: $regexp=&escape($regexp);
5126: } else {
5127: $regexp='.';
5128: }
5129: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5130: my @pairs=split(/\&/,$rep);
5131: my %returnhash=();
5132: if (!($rep =~ /^error/ )) {
5133: foreach my $item (@pairs) {
5134: my ($key,$value)=split(/=/,$item,2);
5135: $key = unescape($key) unless $escapedkeys;
5136: #$key = &unescape($key);
5137: next if ($key =~ /^error: 2 /);
5138: $returnhash{$key}=&thaw_unescape($value);
5139: }
5140: }
5141: return %returnhash;
5142: }
5143:
5144:
5145: # --------------------------------------------------------- dumpstore interface
5146:
5147: sub dumpstore {
5148: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5149: # same as dump but keys must be escaped. They may contain colon separated
5150: # lists of values that may themself contain colons (e.g. symbs).
5151: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5152: }
5153:
5154: # -------------------------------------------------------------- keys interface
5155:
5156: sub getkeys {
5157: my ($namespace,$udomain,$uname)=@_;
5158: if (!$udomain) { $udomain=$env{'user.domain'}; }
5159: if (!$uname) { $uname=$env{'user.name'}; }
5160: my $uhome=&homeserver($uname,$udomain);
5161: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5162: my @keyarray=();
5163: foreach my $key (split(/\&/,$rep)) {
5164: next if ($key =~ /^error: 2 /);
5165: push(@keyarray,&unescape($key));
5166: }
5167: return @keyarray;
5168: }
5169:
5170: # --------------------------------------------------------------- currentdump
5171: sub currentdump {
5172: my ($courseid,$sdom,$sname)=@_;
5173: $courseid = $env{'request.course.id'} if (! defined($courseid));
5174: $sdom = $env{'user.domain'} if (! defined($sdom));
5175: $sname = $env{'user.name'} if (! defined($sname));
5176: my $uhome = &homeserver($sname,$sdom);
5177: my $rep;
5178:
5179: if (grep { $_ eq $uhome } current_machine_ids()) {
5180: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5181: $courseid)));
5182: } else {
5183: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5184: }
5185:
5186: return if ($rep =~ /^(error:|no_such_host)/);
5187: #
5188: my %returnhash=();
5189: #
5190: if ($rep eq "unknown_cmd") {
5191: # an old lond will not know currentdump
5192: # Do a dump and make it look like a currentdump
5193: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5194: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5195: my %hash = @tmp;
5196: @tmp=();
5197: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5198: } else {
5199: my @pairs=split(/\&/,$rep);
5200: foreach my $pair (@pairs) {
5201: my ($key,$value)=split(/=/,$pair,2);
5202: my ($symb,$param) = split(/:/,$key);
5203: $returnhash{&unescape($symb)}->{&unescape($param)} =
5204: &thaw_unescape($value);
5205: }
5206: }
5207: return %returnhash;
5208: }
5209:
5210: sub convert_dump_to_currentdump{
5211: my %hash = %{shift()};
5212: my %returnhash;
5213: # Code ripped from lond, essentially. The only difference
5214: # here is the unescaping done by lonnet::dump(). Conceivably
5215: # we might run in to problems with parameter names =~ /^v\./
5216: while (my ($key,$value) = each(%hash)) {
5217: my ($v,$symb,$param) = split(/:/,$key);
5218: $symb = &unescape($symb);
5219: $param = &unescape($param);
5220: next if ($v eq 'version' || $symb eq 'keys');
5221: next if (exists($returnhash{$symb}) &&
5222: exists($returnhash{$symb}->{$param}) &&
5223: $returnhash{$symb}->{'v.'.$param} > $v);
5224: $returnhash{$symb}->{$param}=$value;
5225: $returnhash{$symb}->{'v.'.$param}=$v;
5226: }
5227: #
5228: # Remove all of the keys in the hashes which keep track of
5229: # the version of the parameter.
5230: while (my ($symb,$param_hash) = each(%returnhash)) {
5231: # use a foreach because we are going to delete from the hash.
5232: foreach my $key (keys(%$param_hash)) {
5233: delete($param_hash->{$key}) if ($key =~ /^v\./);
5234: }
5235: }
5236: return \%returnhash;
5237: }
5238:
5239: # ------------------------------------------------------ critical inc interface
5240:
5241: sub cinc {
5242: return &inc(@_,'critical');
5243: }
5244:
5245: # --------------------------------------------------------------- inc interface
5246:
5247: sub inc {
5248: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5249: if (!$udomain) { $udomain=$env{'user.domain'}; }
5250: if (!$uname) { $uname=$env{'user.name'}; }
5251: my $uhome=&homeserver($uname,$udomain);
5252: my $items='';
5253: if (! ref($store)) {
5254: # got a single value, so use that instead
5255: $items = &escape($store).'=&';
5256: } elsif (ref($store) eq 'SCALAR') {
5257: $items = &escape($$store).'=&';
5258: } elsif (ref($store) eq 'ARRAY') {
5259: $items = join('=&',map {&escape($_);} @{$store});
5260: } elsif (ref($store) eq 'HASH') {
5261: while (my($key,$value) = each(%{$store})) {
5262: $items.= &escape($key).'='.&escape($value).'&';
5263: }
5264: }
5265: $items=~s/\&$//;
5266: if ($critical) {
5267: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
5268: } else {
5269: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
5270: }
5271: }
5272:
5273: # --------------------------------------------------------------- put interface
5274:
5275: sub put {
5276: my ($namespace,$storehash,$udomain,$uname)=@_;
5277: if (!$udomain) { $udomain=$env{'user.domain'}; }
5278: if (!$uname) { $uname=$env{'user.name'}; }
5279: my $uhome=&homeserver($uname,$udomain);
5280: my $items='';
5281: foreach my $item (keys(%$storehash)) {
5282: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5283: }
5284: $items=~s/\&$//;
5285: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5286: }
5287:
5288: # ------------------------------------------------------------ newput interface
5289:
5290: sub newput {
5291: my ($namespace,$storehash,$udomain,$uname)=@_;
5292: if (!$udomain) { $udomain=$env{'user.domain'}; }
5293: if (!$uname) { $uname=$env{'user.name'}; }
5294: my $uhome=&homeserver($uname,$udomain);
5295: my $items='';
5296: foreach my $key (keys(%$storehash)) {
5297: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5298: }
5299: $items=~s/\&$//;
5300: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
5301: }
5302:
5303: # --------------------------------------------------------- putstore interface
5304:
5305: sub putstore {
5306: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5307: if (!$udomain) { $udomain=$env{'user.domain'}; }
5308: if (!$uname) { $uname=$env{'user.name'}; }
5309: my $uhome=&homeserver($uname,$udomain);
5310: my $items='';
5311: foreach my $key (keys(%$storehash)) {
5312: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
5313: }
5314: $items=~s/\&$//;
5315: my $esc_symb=&escape($symb);
5316: my $esc_v=&escape($version);
5317: my $reply =
5318: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
5319: $uhome);
5320: if ($reply eq 'unknown_cmd') {
5321: # gfall back to way things use to be done
5322: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
5323: $uname);
5324: }
5325: return $reply;
5326: }
5327:
5328: sub old_putstore {
5329: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
5330: if (!$udomain) { $udomain=$env{'user.domain'}; }
5331: if (!$uname) { $uname=$env{'user.name'}; }
5332: my $uhome=&homeserver($uname,$udomain);
5333: my %newstorehash;
5334: foreach my $item (keys(%$storehash)) {
5335: my $key = $version.':'.&escape($symb).':'.$item;
5336: $newstorehash{$key} = $storehash->{$item};
5337: }
5338: my $items='';
5339: my %allitems = ();
5340: foreach my $item (keys(%newstorehash)) {
5341: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
5342: my $key = $1.':keys:'.$2;
5343: $allitems{$key} .= $3.':';
5344: }
5345: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
5346: }
5347: foreach my $item (keys(%allitems)) {
5348: $allitems{$item} =~ s/\:$//;
5349: $items.= $item.'='.$allitems{$item}.'&';
5350: }
5351: $items=~s/\&$//;
5352: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
5353: }
5354:
5355: # ------------------------------------------------------ critical put interface
5356:
5357: sub cput {
5358: my ($namespace,$storehash,$udomain,$uname)=@_;
5359: if (!$udomain) { $udomain=$env{'user.domain'}; }
5360: if (!$uname) { $uname=$env{'user.name'}; }
5361: my $uhome=&homeserver($uname,$udomain);
5362: my $items='';
5363: foreach my $item (keys(%$storehash)) {
5364: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5365: }
5366: $items=~s/\&$//;
5367: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
5368: }
5369:
5370: # -------------------------------------------------------------- eget interface
5371:
5372: sub eget {
5373: my ($namespace,$storearr,$udomain,$uname)=@_;
5374: my $items='';
5375: foreach my $item (@$storearr) {
5376: $items.=&escape($item).'&';
5377: }
5378: $items=~s/\&$//;
5379: if (!$udomain) { $udomain=$env{'user.domain'}; }
5380: if (!$uname) { $uname=$env{'user.name'}; }
5381: my $uhome=&homeserver($uname,$udomain);
5382: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
5383: my @pairs=split(/\&/,$rep);
5384: my %returnhash=();
5385: my $i=0;
5386: foreach my $item (@$storearr) {
5387: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5388: $i++;
5389: }
5390: return %returnhash;
5391: }
5392:
5393: # ------------------------------------------------------------ tmpput interface
5394: sub tmpput {
5395: my ($storehash,$server,$context)=@_;
5396: my $items='';
5397: foreach my $item (keys(%$storehash)) {
5398: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
5399: }
5400: $items=~s/\&$//;
5401: if (defined($context)) {
5402: $items .= ':'.&escape($context);
5403: }
5404: return &reply("tmpput:$items",$server);
5405: }
5406:
5407: # ------------------------------------------------------------ tmpget interface
5408: sub tmpget {
5409: my ($token,$server)=@_;
5410: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5411: my $rep=&reply("tmpget:$token",$server);
5412: my %returnhash;
5413: foreach my $item (split(/\&/,$rep)) {
5414: my ($key,$value)=split(/=/,$item);
5415: next if ($key =~ /^error: 2 /);
5416: $returnhash{&unescape($key)}=&thaw_unescape($value);
5417: }
5418: return %returnhash;
5419: }
5420:
5421: # ------------------------------------------------------------ tmpdel interface
5422: sub tmpdel {
5423: my ($token,$server)=@_;
5424: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
5425: return &reply("tmpdel:$token",$server);
5426: }
5427:
5428: # -------------------------------------------------- portfolio access checking
5429:
5430: sub portfolio_access {
5431: my ($requrl) = @_;
5432: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
5433: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
5434: if ($result) {
5435: my %setters;
5436: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5437: my ($startblock,$endblock) =
5438: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
5439: if ($startblock && $endblock) {
5440: return 'B';
5441: }
5442: } else {
5443: my ($startblock,$endblock) =
5444: &Apache::loncommon::blockcheck(\%setters,'port');
5445: if ($startblock && $endblock) {
5446: return 'B';
5447: }
5448: }
5449: }
5450: if ($result eq 'ok') {
5451: return 'F';
5452: } elsif ($result =~ /^[^:]+:guest_/) {
5453: return 'A';
5454: }
5455: return '';
5456: }
5457:
5458: sub get_portfolio_access {
5459: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
5460:
5461: if (!ref($access_hash)) {
5462: my $current_perms = &get_portfile_permissions($udom,$unum);
5463: my %access_controls = &get_access_controls($current_perms,$group,
5464: $file_name);
5465: $access_hash = $access_controls{$file_name};
5466: }
5467:
5468: my ($public,$guest,@domains,@users,@courses,@groups);
5469: my $now = time;
5470: if (ref($access_hash) eq 'HASH') {
5471: foreach my $key (keys(%{$access_hash})) {
5472: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5473: if ($start > $now) {
5474: next;
5475: }
5476: if ($end && $end<$now) {
5477: next;
5478: }
5479: if ($scope eq 'public') {
5480: $public = $key;
5481: last;
5482: } elsif ($scope eq 'guest') {
5483: $guest = $key;
5484: } elsif ($scope eq 'domains') {
5485: push(@domains,$key);
5486: } elsif ($scope eq 'users') {
5487: push(@users,$key);
5488: } elsif ($scope eq 'course') {
5489: push(@courses,$key);
5490: } elsif ($scope eq 'group') {
5491: push(@groups,$key);
5492: }
5493: }
5494: if ($public) {
5495: return 'ok';
5496: }
5497: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
5498: if ($guest) {
5499: return $guest;
5500: }
5501: } else {
5502: if (@domains > 0) {
5503: foreach my $domkey (@domains) {
5504: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
5505: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
5506: return 'ok';
5507: }
5508: }
5509: }
5510: }
5511: if (@users > 0) {
5512: foreach my $userkey (@users) {
5513: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
5514: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
5515: if (ref($item) eq 'HASH') {
5516: if (($item->{'uname'} eq $env{'user.name'}) &&
5517: ($item->{'udom'} eq $env{'user.domain'})) {
5518: return 'ok';
5519: }
5520: }
5521: }
5522: }
5523: }
5524: }
5525: my %roleshash;
5526: my @courses_and_groups = @courses;
5527: push(@courses_and_groups,@groups);
5528: if (@courses_and_groups > 0) {
5529: my (%allgroups,%allroles);
5530: my ($start,$end,$role,$sec,$group);
5531: foreach my $envkey (%env) {
5532: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
5533: my $cid = $2.'_'.$3;
5534: if ($1 eq 'gr') {
5535: $group = $4;
5536: $allgroups{$cid}{$group} = $env{$envkey};
5537: } else {
5538: if ($4 eq '') {
5539: $sec = 'none';
5540: } else {
5541: $sec = $4;
5542: }
5543: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5544: }
5545: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
5546: my $cid = $2.'_'.$3;
5547: if ($4 eq '') {
5548: $sec = 'none';
5549: } else {
5550: $sec = $4;
5551: }
5552: $allroles{$cid}{$1}{$sec} = $env{$envkey};
5553: }
5554: }
5555: if (keys(%allroles) == 0) {
5556: return;
5557: }
5558: foreach my $key (@courses_and_groups) {
5559: my %content = %{$$access_hash{$key}};
5560: my $cnum = $content{'number'};
5561: my $cdom = $content{'domain'};
5562: my $cid = $cdom.'_'.$cnum;
5563: if (!exists($allroles{$cid})) {
5564: next;
5565: }
5566: foreach my $role_id (keys(%{$content{'roles'}})) {
5567: my @sections = @{$content{'roles'}{$role_id}{'section'}};
5568: my @groups = @{$content{'roles'}{$role_id}{'group'}};
5569: my @status = @{$content{'roles'}{$role_id}{'access'}};
5570: my @roles = @{$content{'roles'}{$role_id}{'role'}};
5571: foreach my $role (keys(%{$allroles{$cid}})) {
5572: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
5573: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
5574: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
5575: if (grep/^all$/,@sections) {
5576: return 'ok';
5577: } else {
5578: if (grep/^$sec$/,@sections) {
5579: return 'ok';
5580: }
5581: }
5582: }
5583: }
5584: if (keys(%{$allgroups{$cid}}) == 0) {
5585: if (grep/^none$/,@groups) {
5586: return 'ok';
5587: }
5588: } else {
5589: if (grep/^all$/,@groups) {
5590: return 'ok';
5591: }
5592: foreach my $group (keys(%{$allgroups{$cid}})) {
5593: if (grep/^$group$/,@groups) {
5594: return 'ok';
5595: }
5596: }
5597: }
5598: }
5599: }
5600: }
5601: }
5602: }
5603: if ($guest) {
5604: return $guest;
5605: }
5606: }
5607: }
5608: return;
5609: }
5610:
5611: sub course_group_datechecker {
5612: my ($dates,$now,$status) = @_;
5613: my ($start,$end) = split(/\./,$dates);
5614: if (!$start && !$end) {
5615: return 'ok';
5616: }
5617: if (grep/^active$/,@{$status}) {
5618: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
5619: return 'ok';
5620: }
5621: }
5622: if (grep/^previous$/,@{$status}) {
5623: if ($end > $now ) {
5624: return 'ok';
5625: }
5626: }
5627: if (grep/^future$/,@{$status}) {
5628: if ($start > $now) {
5629: return 'ok';
5630: }
5631: }
5632: return;
5633: }
5634:
5635: sub parse_portfolio_url {
5636: my ($url) = @_;
5637:
5638: my ($type,$udom,$unum,$group,$file_name);
5639:
5640: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
5641: $type = 1;
5642: $udom = $1;
5643: $unum = $2;
5644: $file_name = $3;
5645: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
5646: $type = 2;
5647: $udom = $1;
5648: $unum = $2;
5649: $group = $3;
5650: $file_name = $3.'/'.$4;
5651: }
5652: if (wantarray) {
5653: return ($type,$udom,$unum,$file_name,$group);
5654: }
5655: return $type;
5656: }
5657:
5658: sub is_portfolio_url {
5659: my ($url) = @_;
5660: return scalar(&parse_portfolio_url($url));
5661: }
5662:
5663: sub is_portfolio_file {
5664: my ($file) = @_;
5665: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
5666: return 1;
5667: }
5668: return;
5669: }
5670:
5671: sub usertools_access {
5672: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
5673: my ($access,%tools);
5674: if ($context eq '') {
5675: $context = 'tools';
5676: }
5677: if ($context eq 'requestcourses') {
5678: %tools = (
5679: official => 1,
5680: unofficial => 1,
5681: community => 1,
5682: );
5683: } else {
5684: %tools = (
5685: aboutme => 1,
5686: blog => 1,
5687: webdav => 1,
5688: portfolio => 1,
5689: );
5690: }
5691: return if (!defined($tools{$tool}));
5692:
5693: if ((!defined($udom)) || (!defined($uname))) {
5694: $udom = $env{'user.domain'};
5695: $uname = $env{'user.name'};
5696: }
5697:
5698: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5699: if ($action ne 'reload') {
5700: if ($context eq 'requestcourses') {
5701: return $env{'environment.canrequest.'.$tool};
5702: } else {
5703: return $env{'environment.availabletools.'.$tool};
5704: }
5705: }
5706: }
5707:
5708: my ($toolstatus,$inststatus);
5709:
5710: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
5711: ($action ne 'reload')) {
5712: $toolstatus = $env{'environment.'.$context.'.'.$tool};
5713: $inststatus = $env{'environment.inststatus'};
5714: } else {
5715: if (ref($userenvref) eq 'HASH') {
5716: $toolstatus = $userenvref->{$context.'.'.$tool};
5717: $inststatus = $userenvref->{'inststatus'};
5718: } else {
5719: my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
5720: $toolstatus = $userenv{$context.'.'.$tool};
5721: $inststatus = $userenv{'inststatus'};
5722: }
5723: }
5724:
5725: if ($toolstatus ne '') {
5726: if ($toolstatus) {
5727: $access = 1;
5728: } else {
5729: $access = 0;
5730: }
5731: return $access;
5732: }
5733:
5734: my ($is_adv,%domdef);
5735: if (ref($is_advref) eq 'HASH') {
5736: $is_adv = $is_advref->{'is_adv'};
5737: } else {
5738: $is_adv = &is_advanced_user($udom,$uname);
5739: }
5740: if (ref($domdefref) eq 'HASH') {
5741: %domdef = %{$domdefref};
5742: } else {
5743: %domdef = &get_domain_defaults($udom);
5744: }
5745: if (ref($domdef{$tool}) eq 'HASH') {
5746: if ($is_adv) {
5747: if ($domdef{$tool}{'_LC_adv'} ne '') {
5748: if ($domdef{$tool}{'_LC_adv'}) {
5749: $access = 1;
5750: } else {
5751: $access = 0;
5752: }
5753: return $access;
5754: }
5755: }
5756: if ($inststatus ne '') {
5757: my ($hasaccess,$hasnoaccess);
5758: foreach my $affiliation (split(/:/,$inststatus)) {
5759: if ($domdef{$tool}{$affiliation} ne '') {
5760: if ($domdef{$tool}{$affiliation}) {
5761: $hasaccess = 1;
5762: } else {
5763: $hasnoaccess = 1;
5764: }
5765: }
5766: }
5767: if ($hasaccess || $hasnoaccess) {
5768: if ($hasaccess) {
5769: $access = 1;
5770: } elsif ($hasnoaccess) {
5771: $access = 0;
5772: }
5773: return $access;
5774: }
5775: } else {
5776: if ($domdef{$tool}{'default'} ne '') {
5777: if ($domdef{$tool}{'default'}) {
5778: $access = 1;
5779: } elsif ($domdef{$tool}{'default'} == 0) {
5780: $access = 0;
5781: }
5782: return $access;
5783: }
5784: }
5785: } else {
5786: if (($context eq 'tools') && ($tool ne 'webdav')) {
5787: $access = 1;
5788: } else {
5789: $access = 0;
5790: }
5791: return $access;
5792: }
5793: }
5794:
5795: sub is_course_owner {
5796: my ($cdom,$cnum,$udom,$uname) = @_;
5797: if (($udom eq '') || ($uname eq '')) {
5798: $udom = $env{'user.domain'};
5799: $uname = $env{'user.name'};
5800: }
5801: unless (($udom eq '') || ($uname eq '')) {
5802: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
5803: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
5804: return 1;
5805: } else {
5806: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
5807: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
5808: return 1;
5809: }
5810: }
5811: }
5812: }
5813: return;
5814: }
5815:
5816: sub is_advanced_user {
5817: my ($udom,$uname) = @_;
5818: if ($udom ne '' && $uname ne '') {
5819: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5820: if (wantarray) {
5821: return ($env{'user.adv'},$env{'user.author'});
5822: } else {
5823: return $env{'user.adv'};
5824: }
5825: }
5826: }
5827: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
5828: my %allroles;
5829: my ($is_adv,$is_author);
5830: foreach my $role (keys(%roleshash)) {
5831: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
5832: my $area = '/'.$tdomain.'/'.$trest;
5833: if ($sec ne '') {
5834: $area .= '/'.$sec;
5835: }
5836: if (($area ne '') && ($trole ne '')) {
5837: my $spec=$trole.'.'.$area;
5838: if ($trole =~ /^cr\//) {
5839: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5840: } elsif ($trole ne 'gr') {
5841: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5842: }
5843: if ($trole eq 'au') {
5844: $is_author = 1;
5845: }
5846: }
5847: }
5848: foreach my $role (keys(%allroles)) {
5849: last if ($is_adv);
5850: foreach my $item (split(/:/,$allroles{$role})) {
5851: if ($item ne '') {
5852: my ($privilege,$restrictions)=split(/&/,$item);
5853: if ($privilege eq 'adv') {
5854: $is_adv = 1;
5855: last;
5856: }
5857: }
5858: }
5859: }
5860: if (wantarray) {
5861: return ($is_adv,$is_author);
5862: }
5863: return $is_adv;
5864: }
5865:
5866: sub check_can_request {
5867: my ($dom,$can_request,$request_domains) = @_;
5868: my $canreq = 0;
5869: my ($types,$typename) = &Apache::loncommon::course_types();
5870: my @options = ('approval','validate','autolimit');
5871: my $optregex = join('|',@options);
5872: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
5873: foreach my $type (@{$types}) {
5874: if (&usertools_access($env{'user.name'},
5875: $env{'user.domain'},
5876: $type,undef,'requestcourses')) {
5877: $canreq ++;
5878: if (ref($request_domains) eq 'HASH') {
5879: push(@{$request_domains->{$type}},$env{'user.domain'});
5880: }
5881: if ($dom eq $env{'user.domain'}) {
5882: $can_request->{$type} = 1;
5883: }
5884: }
5885: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
5886: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
5887: if (@curr > 0) {
5888: foreach my $item (@curr) {
5889: if (ref($request_domains) eq 'HASH') {
5890: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
5891: if ($otherdom ne '') {
5892: if (ref($request_domains->{$type}) eq 'ARRAY') {
5893: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
5894: push(@{$request_domains->{$type}},$otherdom);
5895: }
5896: } else {
5897: push(@{$request_domains->{$type}},$otherdom);
5898: }
5899: }
5900: }
5901: }
5902: unless($dom eq $env{'user.domain'}) {
5903: $canreq ++;
5904: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
5905: $can_request->{$type} = 1;
5906: }
5907: }
5908: }
5909: }
5910: }
5911: }
5912: return $canreq;
5913: }
5914:
5915: # ---------------------------------------------- Custom access rule evaluation
5916:
5917: sub customaccess {
5918: my ($priv,$uri)=@_;
5919: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
5920: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
5921: $udom = &LONCAPA::clean_domain($udom);
5922: $ucrs = &LONCAPA::clean_username($ucrs);
5923: my $access=0;
5924: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
5925: my ($effect,$realm,$role,$type)=split(/\:/,$right);
5926: if ($type eq 'user') {
5927: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5928: my ($tdom,$tuname)=split(m{/},$scope);
5929: if ($tdom) {
5930: if ($tdom ne $env{'user.domain'}) { next; }
5931: }
5932: if ($tuname) {
5933: if ($tuname ne $env{'user.name'}) { next; }
5934: }
5935: $access=($effect eq 'allow');
5936: last;
5937: }
5938: } else {
5939: if ($role) {
5940: if ($role ne $urole) { next; }
5941: }
5942: foreach my $scope (split(/\s*\,\s*/,$realm)) {
5943: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
5944: if ($tdom) {
5945: if ($tdom ne $udom) { next; }
5946: }
5947: if ($tcrs) {
5948: if ($tcrs ne $ucrs) { next; }
5949: }
5950: if ($tsec) {
5951: if ($tsec ne $usec) { next; }
5952: }
5953: $access=($effect eq 'allow');
5954: last;
5955: }
5956: if ($realm eq '' && $role eq '') {
5957: $access=($effect eq 'allow');
5958: }
5959: }
5960: }
5961: return $access;
5962: }
5963:
5964: # ------------------------------------------------- Check for a user privilege
5965:
5966: sub allowed {
5967: my ($priv,$uri,$symb,$role)=@_;
5968: my $ver_orguri=$uri;
5969: $uri=&deversion($uri);
5970: my $orguri=$uri;
5971: $uri=&declutter($uri);
5972:
5973: if ($priv eq 'evb') {
5974: # Evade communication block restrictions for specified role in a course
5975: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
5976: return $1;
5977: } else {
5978: return;
5979: }
5980: }
5981:
5982: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
5983: # Free bre access to adm and meta resources
5984: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
5985: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
5986: && ($priv eq 'bre')) {
5987: return 'F';
5988: }
5989:
5990: # Free bre access to user's own portfolio contents
5991: my ($space,$domain,$name,@dir)=split('/',$uri);
5992: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
5993: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
5994: my %setters;
5995: my ($startblock,$endblock) =
5996: &Apache::loncommon::blockcheck(\%setters,'port');
5997: if ($startblock && $endblock) {
5998: return 'B';
5999: } else {
6000: return 'F';
6001: }
6002: }
6003:
6004: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6005: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6006: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6007: if (exists($env{'request.course.id'})) {
6008: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6009: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6010: if (($domain eq $cdom) && ($name eq $cnum)) {
6011: my $courseprivid=$env{'request.course.id'};
6012: $courseprivid=~s/\_/\//;
6013: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6014: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6015: return $1;
6016: } else {
6017: if ($env{'request.course.sec'}) {
6018: $courseprivid.='/'.$env{'request.course.sec'};
6019: }
6020: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6021: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6022: return $2;
6023: }
6024: }
6025: }
6026: }
6027: }
6028:
6029: # Free bre to public access
6030:
6031: if ($priv eq 'bre') {
6032: my $copyright=&metadata($uri,'copyright');
6033: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6034: return 'F';
6035: }
6036: if ($copyright eq 'priv') {
6037: $uri=~/([^\/]+)\/([^\/]+)\//;
6038: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6039: return '';
6040: }
6041: }
6042: if ($copyright eq 'domain') {
6043: $uri=~/([^\/]+)\/([^\/]+)\//;
6044: unless (($env{'user.domain'} eq $1) ||
6045: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6046: return '';
6047: }
6048: }
6049: if ($env{'request.role'}=~ /li\.\//) {
6050: # Library role, so allow browsing of resources in this domain.
6051: return 'F';
6052: }
6053: if ($copyright eq 'custom') {
6054: unless (&customaccess($priv,$uri)) { return ''; }
6055: }
6056: }
6057: # Domain coordinator is trying to create a course
6058: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6059: # uri is the requested domain in this case.
6060: # comparison to 'request.role.domain' shows if the user has selected
6061: # a role of dc for the domain in question.
6062: return 'F' if ($uri eq $env{'request.role.domain'});
6063: }
6064:
6065: my $thisallowed='';
6066: my $statecond=0;
6067: my $courseprivid='';
6068:
6069: my $ownaccess;
6070: # Community Coordinator or Assistant Co-author browsing resource space.
6071: if (($priv eq 'bro') && ($env{'user.author'})) {
6072: if ($uri eq '') {
6073: $ownaccess = 1;
6074: } else {
6075: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6076: my $udom = $env{'user.domain'};
6077: my $uname = $env{'user.name'};
6078: if ($uri =~ m{^\Q$udom\E/?$}) {
6079: $ownaccess = 1;
6080: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6081: unless ($uri =~ m{\.\./}) {
6082: $ownaccess = 1;
6083: }
6084: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6085: my $now = time;
6086: if ($uri =~ m{^([^/]+)/?$}) {
6087: my $adom = $1;
6088: foreach my $key (keys(%env)) {
6089: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6090: my ($start,$end) = split('.',$env{$key});
6091: if (($now >= $start) && (!$end || $end < $now)) {
6092: $ownaccess = 1;
6093: last;
6094: }
6095: }
6096: }
6097: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6098: my $adom = $1;
6099: my $aname = $2;
6100: foreach my $role ('ca','aa') {
6101: if ($env{"user.role.$role./$adom/$aname"}) {
6102: my ($start,$end) =
6103: split('.',$env{"user.role.$role./$adom/$aname"});
6104: if (($now >= $start) && (!$end || $end < $now)) {
6105: $ownaccess = 1;
6106: last;
6107: }
6108: }
6109: }
6110: }
6111: }
6112: }
6113: }
6114: }
6115:
6116: # Course
6117:
6118: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6119: unless (($priv eq 'bro') && (!$ownaccess)) {
6120: $thisallowed.=$1;
6121: }
6122: }
6123:
6124: # Domain
6125:
6126: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
6127: =~/\Q$priv\E\&([^\:]*)/) {
6128: unless (($priv eq 'bro') && (!$ownaccess)) {
6129: $thisallowed.=$1;
6130: }
6131: }
6132:
6133: # User who is not author or co-author might still be able to edit
6134: # resource of an author in the domain (e.g., if Domain Coordinator).
6135: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
6136: (&allowed('mdc',$env{'request.course.id'}))) {
6137: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
6138: $thisallowed.=$1;
6139: }
6140: }
6141:
6142: # Course: uri itself is a course
6143: my $courseuri=$uri;
6144: $courseuri=~s/\_(\d)/\/$1/;
6145: $courseuri=~s/^([^\/])/\/$1/;
6146:
6147: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
6148: =~/\Q$priv\E\&([^\:]*)/) {
6149: unless (($priv eq 'bro') && (!$ownaccess)) {
6150: $thisallowed.=$1;
6151: }
6152: }
6153:
6154: # URI is an uploaded document for this course, default permissions don't matter
6155: # not allowing 'edit' access (editupload) to uploaded course docs
6156: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
6157: $thisallowed='';
6158: my ($match)=&is_on_map($uri);
6159: if ($match) {
6160: if ($env{'user.priv.'.$env{'request.role'}.'./'}
6161: =~/\Q$priv\E\&([^\:]*)/) {
6162: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6163: if (@blockers > 0) {
6164: $thisallowed = 'B';
6165: } else {
6166: $thisallowed.=$1;
6167: }
6168: }
6169: } else {
6170: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
6171: if ($refuri) {
6172: if ($refuri =~ m|^/adm/|) {
6173: $thisallowed='F';
6174: } else {
6175: $refuri=&declutter($refuri);
6176: my ($match) = &is_on_map($refuri);
6177: if ($match) {
6178: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6179: if (@blockers > 0) {
6180: $thisallowed = 'B';
6181: } else {
6182: $thisallowed='F';
6183: }
6184: }
6185: }
6186: }
6187: }
6188: }
6189:
6190: if ($priv eq 'bre'
6191: && $thisallowed ne 'F'
6192: && $thisallowed ne '2'
6193: && &is_portfolio_url($uri)) {
6194: $thisallowed = &portfolio_access($uri);
6195: }
6196:
6197: # Full access at system, domain or course-wide level? Exit.
6198: if ($thisallowed=~/F/) {
6199: return 'F';
6200: }
6201:
6202: # If this is generating or modifying users, exit with special codes
6203:
6204: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
6205: if (($priv eq 'cca') || ($priv eq 'caa')) {
6206: my ($audom,$auname)=split('/',$uri);
6207: # no author name given, so this just checks on the general right to make a co-author in this domain
6208: unless ($auname) { return $thisallowed; }
6209: # an author name is given, so we are about to actually make a co-author for a certain account
6210: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
6211: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
6212: ($audom ne $env{'request.role.domain'}))) { return ''; }
6213: }
6214: return $thisallowed;
6215: }
6216: #
6217: # Gathered so far: system, domain and course wide privileges
6218: #
6219: # Course: See if uri or referer is an individual resource that is part of
6220: # the course
6221:
6222: if ($env{'request.course.id'}) {
6223:
6224: $courseprivid=$env{'request.course.id'};
6225: if ($env{'request.course.sec'}) {
6226: $courseprivid.='/'.$env{'request.course.sec'};
6227: }
6228: $courseprivid=~s/\_/\//;
6229: my $checkreferer=1;
6230: my ($match,$cond)=&is_on_map($uri);
6231: if ($match) {
6232: $statecond=$cond;
6233: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6234: =~/\Q$priv\E\&([^\:]*)/) {
6235: my $value = $1;
6236: if ($priv eq 'bre') {
6237: my @blockers = &has_comm_blocking($priv,$symb,$uri);
6238: if (@blockers > 0) {
6239: $thisallowed = 'B';
6240: } else {
6241: $thisallowed.=$value;
6242: }
6243: } else {
6244: $thisallowed.=$value;
6245: }
6246: $checkreferer=0;
6247: }
6248: }
6249:
6250: if ($checkreferer) {
6251: my $refuri=$env{'httpref.'.$orguri};
6252: unless ($refuri) {
6253: foreach my $key (keys(%env)) {
6254: if ($key=~/^httpref\..*\*/) {
6255: my $pattern=$key;
6256: $pattern=~s/^httpref\.\/res\///;
6257: $pattern=~s/\*/\[\^\/\]\+/g;
6258: $pattern=~s/\//\\\//g;
6259: if ($orguri=~/$pattern/) {
6260: $refuri=$env{$key};
6261: }
6262: }
6263: }
6264: }
6265:
6266: if ($refuri) {
6267: $refuri=&declutter($refuri);
6268: my ($match,$cond)=&is_on_map($refuri);
6269: if ($match) {
6270: my $refstatecond=$cond;
6271: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
6272: =~/\Q$priv\E\&([^\:]*)/) {
6273: my $value = $1;
6274: if ($priv eq 'bre') {
6275: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
6276: if (@blockers > 0) {
6277: $thisallowed = 'B';
6278: } else {
6279: $thisallowed.=$value;
6280: }
6281: } else {
6282: $thisallowed.=$value;
6283: }
6284: $uri=$refuri;
6285: $statecond=$refstatecond;
6286: }
6287: }
6288: }
6289: }
6290: }
6291:
6292: #
6293: # Gathered now: all privileges that could apply, and condition number
6294: #
6295: #
6296: # Full or no access?
6297: #
6298:
6299: if ($thisallowed=~/F/) {
6300: return 'F';
6301: }
6302:
6303: unless ($thisallowed) {
6304: return '';
6305: }
6306:
6307: # Restrictions exist, deal with them
6308: #
6309: # C:according to course preferences
6310: # R:according to resource settings
6311: # L:unless locked
6312: # X:according to user session state
6313: #
6314:
6315: # Possibly locked functionality, check all courses
6316: # Locks might take effect only after 10 minutes cache expiration for other
6317: # courses, and 2 minutes for current course
6318:
6319: my $envkey;
6320: if ($thisallowed=~/L/) {
6321: foreach $envkey (keys(%env)) {
6322: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
6323: my $courseid=$2;
6324: my $roleid=$1.'.'.$2;
6325: $courseid=~s/^\///;
6326: my $expiretime=600;
6327: if ($env{'request.role'} eq $roleid) {
6328: $expiretime=120;
6329: }
6330: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
6331: my $prefix='course.'.$cdom.'_'.$cnum.'.';
6332: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
6333: &coursedescription($courseid,{'freshen_cache' => 1});
6334: }
6335: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
6336: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
6337: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
6338: &log($env{'user.domain'},$env{'user.name'},
6339: $env{'user.home'},
6340: 'Locked by res: '.$priv.' for '.$uri.' due to '.
6341: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6342: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6343: return '';
6344: }
6345: }
6346: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
6347: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
6348: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
6349: &log($env{'user.domain'},$env{'user.name'},
6350: $env{'user.home'},
6351: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
6352: $cdom.'/'.$cnum.'/'.$csec.' expire '.
6353: $env{$prefix.'priv.'.$priv.'.lock.expire'});
6354: return '';
6355: }
6356: }
6357: }
6358: }
6359: }
6360:
6361: #
6362: # Rest of the restrictions depend on selected course
6363: #
6364:
6365: unless ($env{'request.course.id'}) {
6366: if ($thisallowed eq 'A') {
6367: return 'A';
6368: } elsif ($thisallowed eq 'B') {
6369: return 'B';
6370: } else {
6371: return '1';
6372: }
6373: }
6374:
6375: #
6376: # Now user is definitely in a course
6377: #
6378:
6379:
6380: # Course preferences
6381:
6382: if ($thisallowed=~/C/) {
6383: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6384: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
6385: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
6386: =~/\Q$rolecode\E/) {
6387: if (($priv ne 'pch') && ($priv ne 'plc')) {
6388: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6389: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
6390: $env{'request.course.id'});
6391: }
6392: return '';
6393: }
6394:
6395: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
6396: =~/\Q$unamedom\E/) {
6397: if (($priv ne 'pch') && ($priv ne 'plc')) {
6398: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
6399: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
6400: $env{'request.course.id'});
6401: }
6402: return '';
6403: }
6404: }
6405:
6406: # Resource preferences
6407:
6408: if ($thisallowed=~/R/) {
6409: my $rolecode=(split(/\./,$env{'request.role'}))[0];
6410: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
6411: if (($priv ne 'pch') && ($priv ne 'plc')) {
6412: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
6413: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
6414: }
6415: return '';
6416: }
6417: }
6418:
6419: # Restricted by state or randomout?
6420:
6421: if ($thisallowed=~/X/) {
6422: if ($env{'acc.randomout'}) {
6423: if (!$symb) { $symb=&symbread($uri,1); }
6424: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
6425: return '';
6426: }
6427: }
6428: if (&condval($statecond)) {
6429: return '2';
6430: } else {
6431: return '';
6432: }
6433: }
6434:
6435: if ($thisallowed eq 'A') {
6436: return 'A';
6437: } elsif ($thisallowed eq 'B') {
6438: return 'B';
6439: }
6440: return 'F';
6441: }
6442:
6443: sub get_comm_blocks {
6444: my ($cdom,$cnum) = @_;
6445: if ($cdom eq '' || $cnum eq '') {
6446: return unless ($env{'request.course.id'});
6447: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6448: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6449: }
6450: my %commblocks;
6451: my $hashid=$cdom.'_'.$cnum;
6452: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
6453: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
6454: %commblocks = %{$blocksref};
6455: } else {
6456: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
6457: my $cachetime = 600;
6458: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
6459: }
6460: return %commblocks;
6461: }
6462:
6463: sub has_comm_blocking {
6464: my ($priv,$symb,$uri,$blocks) = @_;
6465: return unless ($env{'request.course.id'});
6466: return unless ($priv eq 'bre');
6467: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
6468: my %commblocks;
6469: if (ref($blocks) eq 'HASH') {
6470: %commblocks = %{$blocks};
6471: } else {
6472: %commblocks = &get_comm_blocks();
6473: }
6474: return unless (keys(%commblocks) > 0);
6475: if (!$symb) { $symb=&symbread($uri,1); }
6476: my ($map,$resid,undef)=&decode_symb($symb);
6477: my %tocheck = (
6478: maps => $map,
6479: resources => $symb,
6480: );
6481: my @blockers;
6482: my $now = time;
6483: my $navmap = Apache::lonnavmaps::navmap->new();
6484: foreach my $block (keys(%commblocks)) {
6485: if ($block =~ /^(\d+)____(\d+)$/) {
6486: my ($start,$end) = ($1,$2);
6487: if ($start <= $now && $end >= $now) {
6488: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6489: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6490: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
6491: if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
6492: unless (grep(/^\Q$block\E$/,@blockers)) {
6493: push(@blockers,$block);
6494: }
6495: }
6496: }
6497: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
6498: if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
6499: unless (grep(/^\Q$block\E$/,@blockers)) {
6500: push(@blockers,$block);
6501: }
6502: }
6503: }
6504: }
6505: }
6506: }
6507: } elsif ($block =~ /^firstaccess____(.+)$/) {
6508: my $item = $1;
6509: my @to_test;
6510: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
6511: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
6512: my $check_interval;
6513: if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
6514: my @interval;
6515: my $type = 'map';
6516: if ($item eq 'course') {
6517: $type = 'course';
6518: @interval=&EXT("resource.0.interval");
6519: } else {
6520: if ($item =~ /___\d+___/) {
6521: $type = 'resource';
6522: @interval=&EXT("resource.0.interval",$item);
6523: if (ref($navmap)) {
6524: my $res = $navmap->getBySymb($item);
6525: push(@to_test,$res);
6526: }
6527: } else {
6528: my $mapsymb = &symbread($item,1);
6529: if ($mapsymb) {
6530: if (ref($navmap)) {
6531: my $mapres = $navmap->getBySymb($mapsymb);
6532: @to_test = $mapres->retrieveResources($mapres,undef,0,1);
6533: foreach my $res (@to_test) {
6534: my $symb = $res->symb();
6535: next if ($symb eq $mapsymb);
6536: if ($symb ne '') {
6537: @interval=&EXT("resource.0.interval",$symb);
6538: last;
6539: }
6540: }
6541: }
6542: }
6543: }
6544: }
6545: if ($interval[0] =~ /\d+/) {
6546: my $first_access;
6547: if ($type eq 'resource') {
6548: $first_access=&get_first_access($interval[1],$item);
6549: } elsif ($type eq 'map') {
6550: $first_access=&get_first_access($interval[1],undef,$item);
6551: } else {
6552: $first_access=&get_first_access($interval[1]);
6553: }
6554: if ($first_access) {
6555: my $timesup = $first_access+$interval[0];
6556: if ($timesup > $now) {
6557: foreach my $res (@to_test) {
6558: if ($res->is_problem()) {
6559: if ($res->completable()) {
6560: unless (grep(/^\Q$block\E$/,@blockers)) {
6561: push(@blockers,$block);
6562: }
6563: last;
6564: }
6565: }
6566: }
6567: }
6568: }
6569: }
6570: }
6571: }
6572: }
6573: }
6574: }
6575: return @blockers;
6576: }
6577:
6578: sub check_docs_block {
6579: my ($docsblock,$tocheck) =@_;
6580: if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
6581: return;
6582: }
6583: if (ref($docsblock->{'maps'}) eq 'HASH') {
6584: if ($tocheck->{'maps'}) {
6585: if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
6586: return 1;
6587: }
6588: }
6589: }
6590: if (ref($docsblock->{'resources'}) eq 'HASH') {
6591: if ($tocheck->{'resources'}) {
6592: if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
6593: return 1;
6594: }
6595: }
6596: }
6597: return;
6598: }
6599:
6600: #
6601: # Removes the versino from a URI and
6602: # splits it in to its filename and path to the filename.
6603: # Seems like File::Basename could have done this more clearly.
6604: # Parameters:
6605: # $uri - input URI
6606: # Returns:
6607: # Two element list consisting of
6608: # $pathname - the URI up to and excluding the trailing /
6609: # $filename - The part of the URI following the last /
6610: # NOTE:
6611: # Another realization of this is simply:
6612: # use File::Basename;
6613: # ...
6614: # $uri = shift;
6615: # $filename = basename($uri);
6616: # $path = dirname($uri);
6617: # return ($filename, $path);
6618: #
6619: # The implementation below is probably faster however.
6620: #
6621: sub split_uri_for_cond {
6622: my $uri=&deversion(&declutter(shift));
6623: my @uriparts=split(/\//,$uri);
6624: my $filename=pop(@uriparts);
6625: my $pathname=join('/',@uriparts);
6626: return ($pathname,$filename);
6627: }
6628: # --------------------------------------------------- Is a resource on the map?
6629:
6630: sub is_on_map {
6631: my ($pathname,$filename) = &split_uri_for_cond(shift);
6632: #Trying to find the conditional for the file
6633: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
6634: /\&\Q$filename\E\:([\d\|]+)\&/);
6635: if ($match) {
6636: return (1,$1);
6637: } else {
6638: return (0,0);
6639: }
6640: }
6641:
6642: # --------------------------------------------------------- Get symb from alias
6643:
6644: sub get_symb_from_alias {
6645: my $symb=shift;
6646: my ($map,$resid,$url)=&decode_symb($symb);
6647: # Already is a symb
6648: if ($url) { return $symb; }
6649: # Must be an alias
6650: my $aliassymb='';
6651: my %bighash;
6652: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6653: &GDBM_READER(),0640)) {
6654: my $rid=$bighash{'mapalias_'.$symb};
6655: if ($rid) {
6656: my ($mapid,$resid)=split(/\./,$rid);
6657: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
6658: $resid,$bighash{'src_'.$rid});
6659: }
6660: untie %bighash;
6661: }
6662: return $aliassymb;
6663: }
6664:
6665: # ----------------------------------------------------------------- Define Role
6666:
6667: sub definerole {
6668: if (allowed('mcr','/')) {
6669: my ($rolename,$sysrole,$domrole,$courole)=@_;
6670: foreach my $role (split(':',$sysrole)) {
6671: my ($crole,$cqual)=split(/\&/,$role);
6672: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
6673: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
6674: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6675: return "refused:s:$crole&$cqual";
6676: }
6677: }
6678: }
6679: foreach my $role (split(':',$domrole)) {
6680: my ($crole,$cqual)=split(/\&/,$role);
6681: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
6682: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
6683: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
6684: return "refused:d:$crole&$cqual";
6685: }
6686: }
6687: }
6688: foreach my $role (split(':',$courole)) {
6689: my ($crole,$cqual)=split(/\&/,$role);
6690: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
6691: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
6692: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
6693: return "refused:c:$crole&$cqual";
6694: }
6695: }
6696: }
6697: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
6698: "$env{'user.domain'}:$env{'user.name'}:".
6699: "rolesdef_$rolename=".
6700: escape($sysrole.'_'.$domrole.'_'.$courole);
6701: return reply($command,$env{'user.home'});
6702: } else {
6703: return 'refused';
6704: }
6705: }
6706:
6707: # ---------------- Make a metadata query against the network of library servers
6708:
6709: sub metadata_query {
6710: my ($query,$custom,$customshow,$server_array)=@_;
6711: my %rhash;
6712: my %libserv = &all_library();
6713: my @server_list = (defined($server_array) ? @$server_array
6714: : keys(%libserv) );
6715: for my $server (@server_list) {
6716: unless ($custom or $customshow) {
6717: my $reply=&reply("querysend:".&escape($query),$server);
6718: $rhash{$server}=$reply;
6719: }
6720: else {
6721: my $reply=&reply("querysend:".&escape($query).':'.
6722: &escape($custom).':'.&escape($customshow),
6723: $server);
6724: $rhash{$server}=$reply;
6725: }
6726: }
6727: return \%rhash;
6728: }
6729:
6730: # ----------------------------------------- Send log queries and wait for reply
6731:
6732: sub log_query {
6733: my ($uname,$udom,$query,%filters)=@_;
6734: my $uhome=&homeserver($uname,$udom);
6735: if ($uhome eq 'no_host') { return 'error: no_host'; }
6736: my $uhost=&hostname($uhome);
6737: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
6738: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
6739: $uhome);
6740: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
6741: return get_query_reply($queryid);
6742: }
6743:
6744: # -------------------------- Update MySQL table for portfolio file
6745:
6746: sub update_portfolio_table {
6747: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
6748: if ($group ne '') {
6749: $file_name =~s /^\Q$group\E//;
6750: }
6751: my $homeserver = &homeserver($uname,$udom);
6752: my $queryid=
6753: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
6754: ':'.&escape($file_name).':'.$action,$homeserver);
6755: my $reply = &get_query_reply($queryid);
6756: return $reply;
6757: }
6758:
6759: # -------------------------- Update MySQL allusers table
6760:
6761: sub update_allusers_table {
6762: my ($uname,$udom,$names) = @_;
6763: my $homeserver = &homeserver($uname,$udom);
6764: my $queryid=
6765: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
6766: 'lastname='.&escape($names->{'lastname'}).'%%'.
6767: 'firstname='.&escape($names->{'firstname'}).'%%'.
6768: 'middlename='.&escape($names->{'middlename'}).'%%'.
6769: 'generation='.&escape($names->{'generation'}).'%%'.
6770: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
6771: 'id='.&escape($names->{'id'}),$homeserver);
6772: return;
6773: }
6774:
6775: # ------- Request retrieval of institutional classlists for course(s)
6776:
6777: sub fetch_enrollment_query {
6778: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
6779: my $homeserver;
6780: my $maxtries = 1;
6781: if ($context eq 'automated') {
6782: $homeserver = $perlvar{'lonHostID'};
6783: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
6784: } else {
6785: $homeserver = &homeserver($cnum,$dom);
6786: }
6787: my $host=&hostname($homeserver);
6788: my $cmd = '';
6789: foreach my $affiliate (keys(%{$affiliatesref})) {
6790: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
6791: }
6792: $cmd =~ s/%%$//;
6793: $cmd = &escape($cmd);
6794: my $query = 'fetchenrollment';
6795: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
6796: unless ($queryid=~/^\Q$host\E\_/) {
6797: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
6798: return 'error: '.$queryid;
6799: }
6800: my $reply = &get_query_reply($queryid);
6801: my $tries = 1;
6802: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
6803: $reply = &get_query_reply($queryid);
6804: $tries ++;
6805: }
6806: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
6807: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
6808: } else {
6809: my @responses = split(/:/,$reply);
6810: if ($homeserver eq $perlvar{'lonHostID'}) {
6811: foreach my $line (@responses) {
6812: my ($key,$value) = split(/=/,$line,2);
6813: $$replyref{$key} = $value;
6814: }
6815: } else {
6816: my $pathname = LONCAPA::tempdir();
6817: foreach my $line (@responses) {
6818: my ($key,$value) = split(/=/,$line);
6819: $$replyref{$key} = $value;
6820: if ($value > 0) {
6821: foreach my $item (@{$$affiliatesref{$key}}) {
6822: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
6823: my $destname = $pathname.'/'.$filename;
6824: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
6825: if ($xml_classlist =~ /^error/) {
6826: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
6827: } else {
6828: if ( open(FILE,">$destname") ) {
6829: print FILE &unescape($xml_classlist);
6830: close(FILE);
6831: } else {
6832: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
6833: }
6834: }
6835: }
6836: }
6837: }
6838: }
6839: return 'ok';
6840: }
6841: return 'error';
6842: }
6843:
6844: sub get_query_reply {
6845: my $queryid=shift;
6846: my $replyfile=LONCAPA::tempdir().$queryid;
6847: my $reply='';
6848: for (1..100) {
6849: sleep 2;
6850: if (-e $replyfile.'.end') {
6851: if (open(my $fh,$replyfile)) {
6852: $reply = join('',<$fh>);
6853: close($fh);
6854: } else { return 'error: reply_file_error'; }
6855: return &unescape($reply);
6856: }
6857: }
6858: return 'timeout:'.$queryid;
6859: }
6860:
6861: sub courselog_query {
6862: #
6863: # possible filters:
6864: # url: url or symb
6865: # username
6866: # domain
6867: # action: view, submit, grade
6868: # start: timestamp
6869: # end: timestamp
6870: #
6871: my (%filters)=@_;
6872: unless ($env{'request.course.id'}) { return 'no_course'; }
6873: if ($filters{'url'}) {
6874: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
6875: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
6876: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
6877: }
6878: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
6879: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
6880: return &log_query($cname,$cdom,'courselog',%filters);
6881: }
6882:
6883: sub userlog_query {
6884: #
6885: # possible filters:
6886: # action: log check role
6887: # start: timestamp
6888: # end: timestamp
6889: #
6890: my ($uname,$udom,%filters)=@_;
6891: return &log_query($uname,$udom,'userlog',%filters);
6892: }
6893:
6894: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
6895:
6896: sub auto_run {
6897: my ($cnum,$cdom) = @_;
6898: my $response = 0;
6899: my $settings;
6900: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
6901: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
6902: $settings = $domconfig{'autoenroll'};
6903: if ($settings->{'run'} eq '1') {
6904: $response = 1;
6905: }
6906: } else {
6907: my $homeserver;
6908: if (&is_course($cdom,$cnum)) {
6909: $homeserver = &homeserver($cnum,$cdom);
6910: } else {
6911: $homeserver = &domain($cdom,'primary');
6912: }
6913: if ($homeserver ne 'no_host') {
6914: $response = &reply('autorun:'.$cdom,$homeserver);
6915: }
6916: }
6917: return $response;
6918: }
6919:
6920: sub auto_get_sections {
6921: my ($cnum,$cdom,$inst_coursecode) = @_;
6922: my $homeserver;
6923: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6924: $homeserver = &homeserver($cnum,$cdom);
6925: }
6926: if (!defined($homeserver)) {
6927: if ($cdom =~ /^$match_domain$/) {
6928: $homeserver = &domain($cdom,'primary');
6929: }
6930: }
6931: my @secs;
6932: if (defined($homeserver)) {
6933: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
6934: unless ($response eq 'refused') {
6935: @secs = split(/:/,$response);
6936: }
6937: }
6938: return @secs;
6939: }
6940:
6941: sub auto_new_course {
6942: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
6943: my $homeserver = &homeserver($cnum,$cdom);
6944: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
6945: return $response;
6946: }
6947:
6948: sub auto_validate_courseID {
6949: my ($cnum,$cdom,$inst_course_id) = @_;
6950: my $homeserver = &homeserver($cnum,$cdom);
6951: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
6952: return $response;
6953: }
6954:
6955: sub auto_validate_instcode {
6956: my ($cnum,$cdom,$instcode,$owner) = @_;
6957: my ($homeserver,$response);
6958: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6959: $homeserver = &homeserver($cnum,$cdom);
6960: }
6961: if (!defined($homeserver)) {
6962: if ($cdom =~ /^$match_domain$/) {
6963: $homeserver = &domain($cdom,'primary');
6964: }
6965: }
6966: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
6967: &escape($instcode).':'.&escape($owner),$homeserver));
6968: my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
6969: return ($outcome,$description);
6970: }
6971:
6972: sub auto_create_password {
6973: my ($cnum,$cdom,$authparam,$udom) = @_;
6974: my ($homeserver,$response);
6975: my $create_passwd = 0;
6976: my $authchk = '';
6977: if ($udom =~ /^$match_domain$/) {
6978: $homeserver = &domain($udom,'primary');
6979: }
6980: if ($homeserver eq '') {
6981: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
6982: $homeserver = &homeserver($cnum,$cdom);
6983: }
6984: }
6985: if ($homeserver eq '') {
6986: $authchk = 'nodomain';
6987: } else {
6988: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
6989: if ($response eq 'refused') {
6990: $authchk = 'refused';
6991: } else {
6992: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
6993: }
6994: }
6995: return ($authparam,$create_passwd,$authchk);
6996: }
6997:
6998: sub auto_photo_permission {
6999: my ($cnum,$cdom,$students) = @_;
7000: my $homeserver = &homeserver($cnum,$cdom);
7001: my ($outcome,$perm_reqd,$conditions) =
7002: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
7003: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7004: return (undef,undef);
7005: }
7006: return ($outcome,$perm_reqd,$conditions);
7007: }
7008:
7009: sub auto_checkphotos {
7010: my ($uname,$udom,$pid) = @_;
7011: my $homeserver = &homeserver($uname,$udom);
7012: my ($result,$resulttype);
7013: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
7014: &escape($uname).':'.&escape($pid),
7015: $homeserver));
7016: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7017: return (undef,undef);
7018: }
7019: if ($outcome) {
7020: ($result,$resulttype) = split(/:/,$outcome);
7021: }
7022: return ($result,$resulttype);
7023: }
7024:
7025: sub auto_photochoice {
7026: my ($cnum,$cdom) = @_;
7027: my $homeserver = &homeserver($cnum,$cdom);
7028: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
7029: &escape($cdom),
7030: $homeserver)));
7031: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
7032: return (undef,undef);
7033: }
7034: return ($update,$comment);
7035: }
7036:
7037: sub auto_photoupdate {
7038: my ($affiliatesref,$dom,$cnum,$photo) = @_;
7039: my $homeserver = &homeserver($cnum,$dom);
7040: my $host=&hostname($homeserver);
7041: my $cmd = '';
7042: my $maxtries = 1;
7043: foreach my $affiliate (keys(%{$affiliatesref})) {
7044: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7045: }
7046: $cmd =~ s/%%$//;
7047: $cmd = &escape($cmd);
7048: my $query = 'institutionalphotos';
7049: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
7050: unless ($queryid=~/^\Q$host\E\_/) {
7051: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
7052: return 'error: '.$queryid;
7053: }
7054: my $reply = &get_query_reply($queryid);
7055: my $tries = 1;
7056: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7057: $reply = &get_query_reply($queryid);
7058: $tries ++;
7059: }
7060: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7061: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7062: } else {
7063: my @responses = split(/:/,$reply);
7064: my $outcome = shift(@responses);
7065: foreach my $item (@responses) {
7066: my ($key,$value) = split(/=/,$item);
7067: $$photo{$key} = $value;
7068: }
7069: return $outcome;
7070: }
7071: return 'error';
7072: }
7073:
7074: sub auto_instcode_format {
7075: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
7076: $cat_order) = @_;
7077: my $courses = '';
7078: my @homeservers;
7079: if ($caller eq 'global') {
7080: my %servers = &get_servers($codedom,'library');
7081: foreach my $tryserver (keys(%servers)) {
7082: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7083: push(@homeservers,$tryserver);
7084: }
7085: }
7086: } elsif ($caller eq 'requests') {
7087: if ($codedom =~ /^$match_domain$/) {
7088: my $chome = &domain($codedom,'primary');
7089: unless ($chome eq 'no_host') {
7090: push(@homeservers,$chome);
7091: }
7092: }
7093: } else {
7094: push(@homeservers,&homeserver($caller,$codedom));
7095: }
7096: foreach my $code (keys(%{$instcodes})) {
7097: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
7098: }
7099: chop($courses);
7100: my $ok_response = 0;
7101: my $response;
7102: while (@homeservers > 0 && $ok_response == 0) {
7103: my $server = shift(@homeservers);
7104: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
7105: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
7106: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
7107: split(/:/,$response);
7108: %{$codes} = (%{$codes},&str2hash($codes_str));
7109: push(@{$codetitles},&str2array($codetitles_str));
7110: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
7111: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
7112: $ok_response = 1;
7113: }
7114: }
7115: if ($ok_response) {
7116: return 'ok';
7117: } else {
7118: return $response;
7119: }
7120: }
7121:
7122: sub auto_instcode_defaults {
7123: my ($domain,$returnhash,$code_order) = @_;
7124: my @homeservers;
7125:
7126: my %servers = &get_servers($domain,'library');
7127: foreach my $tryserver (keys(%servers)) {
7128: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7129: push(@homeservers,$tryserver);
7130: }
7131: }
7132:
7133: my $response;
7134: foreach my $server (@homeservers) {
7135: $response=&reply('autoinstcodedefaults:'.$domain,$server);
7136: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7137:
7138: foreach my $pair (split(/\&/,$response)) {
7139: my ($name,$value)=split(/\=/,$pair);
7140: if ($name eq 'code_order') {
7141: @{$code_order} = split(/\&/,&unescape($value));
7142: } else {
7143: $returnhash->{&unescape($name)}=&unescape($value);
7144: }
7145: }
7146: return 'ok';
7147: }
7148:
7149: return $response;
7150: }
7151:
7152: sub auto_possible_instcodes {
7153: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
7154: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
7155: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
7156: return;
7157: }
7158: my (@homeservers,$uhome);
7159: if (defined(&domain($domain,'primary'))) {
7160: $uhome=&domain($domain,'primary');
7161: push(@homeservers,&domain($domain,'primary'));
7162: } else {
7163: my %servers = &get_servers($domain,'library');
7164: foreach my $tryserver (keys(%servers)) {
7165: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
7166: push(@homeservers,$tryserver);
7167: }
7168: }
7169: }
7170: my $response;
7171: foreach my $server (@homeservers) {
7172: $response=&reply('autopossibleinstcodes:'.$domain,$server);
7173: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
7174: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
7175: split(':',$response);
7176: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
7177: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
7178: foreach my $item (split('&',$cat_title)) {
7179: my ($name,$value)=split('=',$item);
7180: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
7181: }
7182: foreach my $item (split('&',$cat_order)) {
7183: my ($name,$value)=split('=',$item);
7184: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
7185: }
7186: return 'ok';
7187: }
7188: return $response;
7189: }
7190:
7191: sub auto_courserequest_checks {
7192: my ($dom) = @_;
7193: my ($homeserver,%validations);
7194: if ($dom =~ /^$match_domain$/) {
7195: $homeserver = &domain($dom,'primary');
7196: }
7197: unless ($homeserver eq 'no_host') {
7198: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
7199: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
7200: my @items = split(/&/,$response);
7201: foreach my $item (@items) {
7202: my ($key,$value) = split('=',$item);
7203: $validations{&unescape($key)} = &thaw_unescape($value);
7204: }
7205: }
7206: }
7207: return %validations;
7208: }
7209:
7210: sub auto_courserequest_validation {
7211: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
7212: my ($homeserver,$response);
7213: if ($dom =~ /^$match_domain$/) {
7214: $homeserver = &domain($dom,'primary');
7215: }
7216: unless ($homeserver eq 'no_host') {
7217:
7218: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
7219: ':'.&escape($crstype).':'.&escape($inststatuslist).
7220: ':'.&escape($instcode).':'.&escape($instseclist),
7221: $homeserver));
7222: }
7223: return $response;
7224: }
7225:
7226: sub auto_validate_class_sec {
7227: my ($cdom,$cnum,$owners,$inst_class) = @_;
7228: my $homeserver = &homeserver($cnum,$cdom);
7229: my $ownerlist;
7230: if (ref($owners) eq 'ARRAY') {
7231: $ownerlist = join(',',@{$owners});
7232: } else {
7233: $ownerlist = $owners;
7234: }
7235: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
7236: &escape($ownerlist).':'.$cdom,$homeserver);
7237: return $response;
7238: }
7239:
7240: # ------------------------------------------------------- Course Group routines
7241:
7242: sub get_coursegroups {
7243: my ($cdom,$cnum,$group,$namespace) = @_;
7244: return(&dump($namespace,$cdom,$cnum,$group));
7245: }
7246:
7247: sub modify_coursegroup {
7248: my ($cdom,$cnum,$groupsettings) = @_;
7249: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
7250: }
7251:
7252: sub toggle_coursegroup_status {
7253: my ($cdom,$cnum,$group,$action) = @_;
7254: my ($from_namespace,$to_namespace);
7255: if ($action eq 'delete') {
7256: $from_namespace = 'coursegroups';
7257: $to_namespace = 'deleted_groups';
7258: } else {
7259: $from_namespace = 'deleted_groups';
7260: $to_namespace = 'coursegroups';
7261: }
7262: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
7263: if (my $tmp = &error(%curr_group)) {
7264: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
7265: return ('read error',$tmp);
7266: } else {
7267: my %savedsettings = %curr_group;
7268: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
7269: my $deloutcome;
7270: if ($result eq 'ok') {
7271: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
7272: } else {
7273: return ('write error',$result);
7274: }
7275: if ($deloutcome eq 'ok') {
7276: return 'ok';
7277: } else {
7278: return ('delete error',$deloutcome);
7279: }
7280: }
7281: }
7282:
7283: sub modify_group_roles {
7284: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
7285: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
7286: my $role = 'gr/'.&escape($userprivs);
7287: my ($uname,$udom) = split(/:/,$user);
7288: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
7289: if ($result eq 'ok') {
7290: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
7291: }
7292: return $result;
7293: }
7294:
7295: sub modify_coursegroup_membership {
7296: my ($cdom,$cnum,$membership) = @_;
7297: my $result = &put('groupmembership',$membership,$cdom,$cnum);
7298: return $result;
7299: }
7300:
7301: sub get_active_groups {
7302: my ($udom,$uname,$cdom,$cnum) = @_;
7303: my $now = time;
7304: my %groups = ();
7305: foreach my $key (keys(%env)) {
7306: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
7307: my ($start,$end) = split(/\./,$env{$key});
7308: if (($end!=0) && ($end<$now)) { next; }
7309: if (($start!=0) && ($start>$now)) { next; }
7310: if ($1 eq $cdom && $2 eq $cnum) {
7311: $groups{$3} = $env{$key} ;
7312: }
7313: }
7314: }
7315: return %groups;
7316: }
7317:
7318: sub get_group_membership {
7319: my ($cdom,$cnum,$group) = @_;
7320: return(&dump('groupmembership',$cdom,$cnum,$group));
7321: }
7322:
7323: sub get_users_groups {
7324: my ($udom,$uname,$courseid) = @_;
7325: my @usersgroups;
7326: my $cachetime=1800;
7327:
7328: my $hashid="$udom:$uname:$courseid";
7329: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
7330: if (defined($cached)) {
7331: @usersgroups = split(/:/,$grouplist);
7332: } else {
7333: $grouplist = '';
7334: my $courseurl = &courseid_to_courseurl($courseid);
7335: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
7336: my $access_end = $env{'course.'.$courseid.
7337: '.default_enrollment_end_date'};
7338: my $now = time;
7339: foreach my $key (keys(%roleshash)) {
7340: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
7341: my $group = $1;
7342: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
7343: my $start = $2;
7344: my $end = $1;
7345: if ($start == -1) { next; } # deleted from group
7346: if (($start!=0) && ($start>$now)) { next; }
7347: if (($end!=0) && ($end<$now)) {
7348: if ($access_end && $access_end < $now) {
7349: if ($access_end - $end < 86400) {
7350: push(@usersgroups,$group);
7351: }
7352: }
7353: next;
7354: }
7355: push(@usersgroups,$group);
7356: }
7357: }
7358: }
7359: @usersgroups = &sort_course_groups($courseid,@usersgroups);
7360: $grouplist = join(':',@usersgroups);
7361: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
7362: }
7363: return @usersgroups;
7364: }
7365:
7366: sub devalidate_getgroups_cache {
7367: my ($udom,$uname,$cdom,$cnum)=@_;
7368: my $courseid = $cdom.'_'.$cnum;
7369:
7370: my $hashid="$udom:$uname:$courseid";
7371: &devalidate_cache_new('getgroups',$hashid);
7372: }
7373:
7374: # ------------------------------------------------------------------ Plain Text
7375:
7376: sub plaintext {
7377: my ($short,$type,$cid,$forcedefault) = @_;
7378: if ($short =~ m{^cr/}) {
7379: return (split('/',$short))[-1];
7380: }
7381: if (!defined($cid)) {
7382: $cid = $env{'request.course.id'};
7383: }
7384: my %rolenames = (
7385: Course => 'std',
7386: Community => 'alt1',
7387: );
7388: if ($cid ne '') {
7389: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
7390: unless ($forcedefault) {
7391: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
7392: &Apache::lonlocal::mt_escape(\$roletext);
7393: return &Apache::lonlocal::mt($roletext);
7394: }
7395: }
7396: }
7397: if ((defined($type)) && (defined($rolenames{$type})) &&
7398: (defined($rolenames{$type})) &&
7399: (defined($prp{$short}{$rolenames{$type}}))) {
7400: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
7401: } elsif ($cid ne '') {
7402: my $crstype = $env{'course.'.$cid.'.type'};
7403: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
7404: (defined($prp{$short}{$rolenames{$crstype}}))) {
7405: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
7406: }
7407: }
7408: return &Apache::lonlocal::mt($prp{$short}{'std'});
7409: }
7410:
7411: # ----------------------------------------------------------------- Assign Role
7412:
7413: sub assignrole {
7414: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
7415: $context)=@_;
7416: my $mrole;
7417: if ($role =~ /^cr\//) {
7418: my $cwosec=$url;
7419: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7420: unless (&allowed('ccr',$cwosec)) {
7421: my $refused = 1;
7422: if ($context eq 'requestcourses') {
7423: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7424: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
7425: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
7426: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7427: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7428: if ($crsenv{'internal.courseowner'} eq
7429: $env{'user.name'}.':'.$env{'user.domain'}) {
7430: $refused = '';
7431: }
7432: }
7433: }
7434: }
7435: }
7436: if ($refused) {
7437: &logthis('Refused custom assignrole: '.
7438: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
7439: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
7440: return 'refused';
7441: }
7442: }
7443: $mrole='cr';
7444: } elsif ($role =~ /^gr\//) {
7445: my $cwogrp=$url;
7446: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
7447: unless (&allowed('mdg',$cwogrp)) {
7448: &logthis('Refused group assignrole: '.
7449: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
7450: $env{'user.name'}.' at '.$env{'user.domain'});
7451: return 'refused';
7452: }
7453: $mrole='gr';
7454: } else {
7455: my $cwosec=$url;
7456: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
7457: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
7458: my $refused;
7459: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
7460: if (!(&allowed('c'.$role,$url))) {
7461: $refused = 1;
7462: }
7463: } else {
7464: $refused = 1;
7465: }
7466: if ($refused) {
7467: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
7468: if (!$selfenroll && $context eq 'course') {
7469: my %crsenv;
7470: if ($role eq 'cc' || $role eq 'co') {
7471: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7472: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
7473: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
7474: if ($crsenv{'internal.courseowner'} eq
7475: $env{'user.name'}.':'.$env{'user.domain'}) {
7476: $refused = '';
7477: }
7478: }
7479: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
7480: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
7481: if ($crsenv{'internal.courseowner'} eq
7482: $env{'user.name'}.':'.$env{'user.domain'}) {
7483: $refused = '';
7484: }
7485: }
7486: }
7487: }
7488: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7489: $refused = '';
7490: } elsif ($context eq 'requestcourses') {
7491: my @possroles = ('st','ta','ep','in','cc','co');
7492: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
7493: my $wrongcc;
7494: if ($cnum =~ /^$match_community$/) {
7495: $wrongcc = 1 if ($role eq 'cc');
7496: } else {
7497: $wrongcc = 1 if ($role eq 'co');
7498: }
7499: unless ($wrongcc) {
7500: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
7501: if ($crsenv{'internal.courseowner'} eq
7502: $env{'user.name'}.':'.$env{'user.domain'}) {
7503: $refused = '';
7504: }
7505: }
7506: }
7507: }
7508: if ($refused) {
7509: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
7510: ' '.$role.' '.$end.' '.$start.' by '.
7511: $env{'user.name'}.' at '.$env{'user.domain'});
7512: return 'refused';
7513: }
7514: }
7515: } elsif ($role eq 'au') {
7516: if ($url ne '/'.$udom.'/') {
7517: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
7518: ' to assign author role for '.$uname.':'.$udom.
7519: ' in domain: '.$url.' refused (wrong domain).');
7520: return 'refused';
7521: }
7522: }
7523: $mrole=$role;
7524: }
7525: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7526: "$udom:$uname:$url".'_'."$mrole=$role";
7527: if ($end) { $command.='_'.$end; }
7528: if ($start) {
7529: if ($end) {
7530: $command.='_'.$start;
7531: } else {
7532: $command.='_0_'.$start;
7533: }
7534: }
7535: my $origstart = $start;
7536: my $origend = $end;
7537: my $delflag;
7538: # actually delete
7539: if ($deleteflag) {
7540: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
7541: # modify command to delete the role
7542: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
7543: "$udom:$uname:$url".'_'."$mrole";
7544: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
7545: # set start and finish to negative values for userrolelog
7546: $start=-1;
7547: $end=-1;
7548: $delflag = 1;
7549: }
7550: }
7551: # send command
7552: my $answer=&reply($command,&homeserver($uname,$udom));
7553: # log new user role if status is ok
7554: if ($answer eq 'ok') {
7555: &userrolelog($role,$uname,$udom,$url,$start,$end);
7556: # for course roles, perform group memberships changes triggered by role change.
7557: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
7558: unless ($role =~ /^gr/) {
7559: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
7560: $origstart,$selfenroll,$context);
7561: }
7562: if ($role eq 'cc') {
7563: &autoupdate_coowners($url,$end,$start,$uname,$udom);
7564: }
7565: }
7566: return $answer;
7567: }
7568:
7569: sub autoupdate_coowners {
7570: my ($url,$end,$start,$uname,$udom) = @_;
7571: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
7572: if (($cdom ne '') && ($cnum ne '')) {
7573: my $now = time;
7574: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
7575: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
7576: my %coursehash = &coursedescription($cdom.'_'.$cnum);
7577: my $instcode = $coursehash{'internal.coursecode'};
7578: if ($instcode ne '') {
7579: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
7580: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
7581: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
7582: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
7583: if ($result eq 'valid') {
7584: if ($coursehash{'internal.co-owners'}) {
7585: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7586: push(@newcoowners,$coowner);
7587: }
7588: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
7589: push(@newcoowners,$uname.':'.$udom);
7590: }
7591: @newcoowners = sort(@newcoowners);
7592: } else {
7593: push(@newcoowners,$uname.':'.$udom);
7594: }
7595: } else {
7596: if ($coursehash{'internal.co-owners'}) {
7597: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
7598: unless ($coowner eq $uname.':'.$udom) {
7599: push(@newcoowners,$coowner);
7600: }
7601: }
7602: unless (@newcoowners > 0) {
7603: $delcoowners = 1;
7604: $coowners = '';
7605: }
7606: }
7607: }
7608: if (@newcoowners || $delcoowners) {
7609: &store_coowners($cdom,$cnum,$coursehash{'home'},
7610: $delcoowners,@newcoowners);
7611: }
7612: }
7613: }
7614: }
7615: }
7616: }
7617: }
7618:
7619: sub store_coowners {
7620: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
7621: my $cid = $cdom.'_'.$cnum;
7622: my ($coowners,$delresult,$putresult);
7623: if (@newcoowners) {
7624: $coowners = join(',',@newcoowners);
7625: my %coownershash = (
7626: 'internal.co-owners' => $coowners,
7627: );
7628: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
7629: if ($putresult eq 'ok') {
7630: if ($env{'course.'.$cid.'.num'} eq $cnum) {
7631: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
7632: }
7633: }
7634: }
7635: if ($delcoowners) {
7636: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
7637: if ($delresult eq 'ok') {
7638: if ($env{'course.'.$cid.'.internal.co-owners'}) {
7639: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
7640: }
7641: }
7642: }
7643: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
7644: my %crsinfo =
7645: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
7646: if (ref($crsinfo{$cid}) eq 'HASH') {
7647: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
7648: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
7649: }
7650: }
7651: }
7652:
7653: # -------------------------------------------------- Modify user authentication
7654: # Overrides without validation
7655:
7656: sub modifyuserauth {
7657: my ($udom,$uname,$umode,$upass)=@_;
7658: my $uhome=&homeserver($uname,$udom);
7659: unless (&allowed('mau',$udom)) { return 'refused'; }
7660: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
7661: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7662: ' in domain '.$env{'request.role.domain'});
7663: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
7664: &escape($upass),$uhome);
7665: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
7666: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
7667: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7668: &log($udom,,$uname,$uhome,
7669: 'Authentication changed by '.$env{'user.domain'}.', '.
7670: $env{'user.name'}.', '.$umode.
7671: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
7672: unless ($reply eq 'ok') {
7673: &logthis('Authentication mode error: '.$reply);
7674: return 'error: '.$reply;
7675: }
7676: return 'ok';
7677: }
7678:
7679: # --------------------------------------------------------------- Modify a user
7680:
7681: sub modifyuser {
7682: my ($udom, $uname, $uid,
7683: $umode, $upass, $first,
7684: $middle, $last, $gene,
7685: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
7686: $udom= &LONCAPA::clean_domain($udom);
7687: $uname=&LONCAPA::clean_username($uname);
7688: my $showcandelete = 'none';
7689: if (ref($candelete) eq 'ARRAY') {
7690: if (@{$candelete} > 0) {
7691: $showcandelete = join(', ',@{$candelete});
7692: }
7693: }
7694: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
7695: $umode.', '.$first.', '.$middle.', '.
7696: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
7697: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
7698: ' desiredhome not specified').
7699: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
7700: ' in domain '.$env{'request.role.domain'});
7701: my $uhome=&homeserver($uname,$udom,'true');
7702: my $newuser;
7703: if ($uhome eq 'no_host') {
7704: $newuser = 1;
7705: }
7706: # ----------------------------------------------------------------- Create User
7707: if (($uhome eq 'no_host') &&
7708: (($umode && $upass) || ($umode eq 'localauth'))) {
7709: my $unhome='';
7710: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
7711: $unhome = $desiredhome;
7712: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
7713: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
7714: } else { # load balancing routine for determining $unhome
7715: my $loadm=10000000;
7716: my %servers = &get_servers($udom,'library');
7717: foreach my $tryserver (keys(%servers)) {
7718: my $answer=reply('load',$tryserver);
7719: if (($answer=~/\d+/) && ($answer<$loadm)) {
7720: $loadm=$answer;
7721: $unhome=$tryserver;
7722: }
7723: }
7724: }
7725: if (($unhome eq '') || ($unhome eq 'no_host')) {
7726: return 'error: unable to find a home server for '.$uname.
7727: ' in domain '.$udom;
7728: }
7729: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
7730: &escape($upass),$unhome);
7731: unless ($reply eq 'ok') {
7732: return 'error: '.$reply;
7733: }
7734: $uhome=&homeserver($uname,$udom,'true');
7735: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
7736: return 'error: unable verify users home machine.';
7737: }
7738: } # End of creation of new user
7739: # ---------------------------------------------------------------------- Add ID
7740: if ($uid) {
7741: $uid=~tr/A-Z/a-z/;
7742: my %uidhash=&idrget($udom,$uname);
7743: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
7744: && (!$forceid)) {
7745: unless ($uid eq $uidhash{$uname}) {
7746: return 'error: user id "'.$uid.'" does not match '.
7747: 'current user id "'.$uidhash{$uname}.'".';
7748: }
7749: } else {
7750: &idput($udom,($uname => $uid));
7751: }
7752: }
7753: # -------------------------------------------------------------- Add names, etc
7754: my @tmp=&get('environment',
7755: ['firstname','middlename','lastname','generation','id',
7756: 'permanentemail','inststatus'],
7757: $udom,$uname);
7758: my (%names,%oldnames);
7759: if ($tmp[0] =~ m/^error:.*/) {
7760: %names=();
7761: } else {
7762: %names = @tmp;
7763: %oldnames = %names;
7764: }
7765: #
7766: # If name, email and/or uid are blank (e.g., because an uploaded file
7767: # of users did not contain them), do not overwrite existing values
7768: # unless field is in $candelete array ref.
7769: #
7770:
7771: my @fields = ('firstname','middlename','lastname','generation',
7772: 'permanentemail','id');
7773: my %newvalues;
7774: if (ref($candelete) eq 'ARRAY') {
7775: foreach my $field (@fields) {
7776: if (grep(/^\Q$field\E$/,@{$candelete})) {
7777: if ($field eq 'firstname') {
7778: $names{$field} = $first;
7779: } elsif ($field eq 'middlename') {
7780: $names{$field} = $middle;
7781: } elsif ($field eq 'lastname') {
7782: $names{$field} = $last;
7783: } elsif ($field eq 'generation') {
7784: $names{$field} = $gene;
7785: } elsif ($field eq 'permanentemail') {
7786: $names{$field} = $email;
7787: } elsif ($field eq 'id') {
7788: $names{$field} = $uid;
7789: }
7790: }
7791: }
7792: }
7793: if ($first) { $names{'firstname'} = $first; }
7794: if (defined($middle)) { $names{'middlename'} = $middle; }
7795: if ($last) { $names{'lastname'} = $last; }
7796: if (defined($gene)) { $names{'generation'} = $gene; }
7797: if ($email) {
7798: $email=~s/[^\w\@\.\-\,]//gs;
7799: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
7800: }
7801: if ($uid) { $names{'id'} = $uid; }
7802: if (defined($inststatus)) {
7803: $names{'inststatus'} = '';
7804: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
7805: if (ref($usertypes) eq 'HASH') {
7806: my @okstatuses;
7807: foreach my $item (split(/:/,$inststatus)) {
7808: if (defined($usertypes->{$item})) {
7809: push(@okstatuses,$item);
7810: }
7811: }
7812: if (@okstatuses) {
7813: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
7814: }
7815: }
7816: }
7817: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
7818: $umode.', '.$first.', '.$middle.', '.
7819: $last.', '.$gene.', '.$email.', '.$inststatus;
7820: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
7821: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
7822: } else {
7823: $logmsg .= ' during self creation';
7824: }
7825: my $changed;
7826: if ($newuser) {
7827: $changed = 1;
7828: } else {
7829: foreach my $field (@fields) {
7830: if ($names{$field} ne $oldnames{$field}) {
7831: $changed = 1;
7832: last;
7833: }
7834: }
7835: }
7836: unless ($changed) {
7837: $logmsg = 'No changes in user information needed for: '.$logmsg;
7838: &logthis($logmsg);
7839: return 'ok';
7840: }
7841: my $reply = &put('environment', \%names, $udom,$uname);
7842: if ($reply ne 'ok') {
7843: return 'error: '.$reply;
7844: }
7845: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
7846: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
7847: }
7848: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
7849: &devalidate_cache_new('namescache',$uname.':'.$udom);
7850: $logmsg = 'Success modifying user '.$logmsg;
7851: &logthis($logmsg);
7852: return 'ok';
7853: }
7854:
7855: # -------------------------------------------------------------- Modify student
7856:
7857: sub modifystudent {
7858: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
7859: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
7860: $selfenroll,$context,$inststatus)=@_;
7861: if (!$cid) {
7862: unless ($cid=$env{'request.course.id'}) {
7863: return 'not_in_class';
7864: }
7865: }
7866: # --------------------------------------------------------------- Make the user
7867: my $reply=&modifyuser
7868: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
7869: $desiredhome,$email,$inststatus);
7870: unless ($reply eq 'ok') { return $reply; }
7871: # This will cause &modify_student_enrollment to get the uid from the
7872: # students environment
7873: $uid = undef if (!$forceid);
7874: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
7875: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
7876: return $reply;
7877: }
7878:
7879: sub modify_student_enrollment {
7880: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
7881: my ($cdom,$cnum,$chome);
7882: if (!$cid) {
7883: unless ($cid=$env{'request.course.id'}) {
7884: return 'not_in_class';
7885: }
7886: $cdom=$env{'course.'.$cid.'.domain'};
7887: $cnum=$env{'course.'.$cid.'.num'};
7888: } else {
7889: ($cdom,$cnum)=split(/_/,$cid);
7890: }
7891: $chome=$env{'course.'.$cid.'.home'};
7892: if (!$chome) {
7893: $chome=&homeserver($cnum,$cdom);
7894: }
7895: if (!$chome) { return 'unknown_course'; }
7896: # Make sure the user exists
7897: my $uhome=&homeserver($uname,$udom);
7898: if (($uhome eq '') || ($uhome eq 'no_host')) {
7899: return 'error: no such user';
7900: }
7901: # Get student data if we were not given enough information
7902: if (!defined($first) || $first eq '' ||
7903: !defined($last) || $last eq '' ||
7904: !defined($uid) || $uid eq '' ||
7905: !defined($middle) || $middle eq '' ||
7906: !defined($gene) || $gene eq '') {
7907: # They did not supply us with enough data to enroll the student, so
7908: # we need to pick up more information.
7909: my %tmp = &get('environment',
7910: ['firstname','middlename','lastname', 'generation','id']
7911: ,$udom,$uname);
7912:
7913: #foreach my $key (keys(%tmp)) {
7914: # &logthis("key $key = ".$tmp{$key});
7915: #}
7916: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
7917: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
7918: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
7919: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
7920: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
7921: }
7922: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
7923: my $user = "$uname:$udom";
7924: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
7925: my $reply=cput('classlist',
7926: {$user =>
7927: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
7928: $cdom,$cnum);
7929: if (($reply eq 'ok') || ($reply eq 'delayed')) {
7930: &devalidate_getsection_cache($udom,$uname,$cid);
7931: } else {
7932: return 'error: '.$reply;
7933: }
7934: # Add student role to user
7935: my $uurl='/'.$cid;
7936: $uurl=~s/\_/\//g;
7937: if ($usec) {
7938: $uurl.='/'.$usec;
7939: }
7940: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
7941: $selfenroll,$context);
7942: if ($result ne 'ok') {
7943: if ($old_entry{$user} ne '') {
7944: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
7945: } else {
7946: $reply = &del('classlist',[$user],$cdom,$cnum);
7947: }
7948: }
7949: return $result;
7950: }
7951:
7952: sub format_name {
7953: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
7954: my $name;
7955: if ($first ne 'lastname') {
7956: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
7957: } else {
7958: if ($lastname=~/\S/) {
7959: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
7960: $name=~s/\s+,/,/;
7961: } else {
7962: $name.= $firstname.' '.$middlename.' '.$generation;
7963: }
7964: }
7965: $name=~s/^\s+//;
7966: $name=~s/\s+$//;
7967: $name=~s/\s+/ /g;
7968: return $name;
7969: }
7970:
7971: # ------------------------------------------------- Write to course preferences
7972:
7973: sub writecoursepref {
7974: my ($courseid,%prefs)=@_;
7975: $courseid=~s/^\///;
7976: $courseid=~s/\_/\//g;
7977: my ($cdomain,$cnum)=split(/\//,$courseid);
7978: my $chome=homeserver($cnum,$cdomain);
7979: if (($chome eq '') || ($chome eq 'no_host')) {
7980: return 'error: no such course';
7981: }
7982: my $cstring='';
7983: foreach my $pref (keys(%prefs)) {
7984: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
7985: }
7986: $cstring=~s/\&$//;
7987: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
7988: }
7989:
7990: # ---------------------------------------------------------- Make/modify course
7991:
7992: sub createcourse {
7993: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
7994: $course_owner,$crstype,$cnum,$context,$category)=@_;
7995: $url=&declutter($url);
7996: my $cid='';
7997: if ($context eq 'requestcourses') {
7998: my $can_create = 0;
7999: my ($ownername,$ownerdom) = split(':',$course_owner);
8000: if ($udom eq $ownerdom) {
8001: if (&usertools_access($ownername,$ownerdom,$category,undef,
8002: $context)) {
8003: $can_create = 1;
8004: }
8005: } else {
8006: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
8007: $category);
8008: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
8009: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
8010: if (@curr > 0) {
8011: my @options = qw(approval validate autolimit);
8012: my $optregex = join('|',@options);
8013: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
8014: $can_create = 1;
8015: }
8016: }
8017: }
8018: }
8019: if ($can_create) {
8020: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
8021: unless (&allowed('ccc',$udom)) {
8022: return 'refused';
8023: }
8024: }
8025: } else {
8026: return 'refused';
8027: }
8028: } elsif (!&allowed('ccc',$udom)) {
8029: return 'refused';
8030: }
8031: # --------------------------------------------------------------- Get Unique ID
8032: my $uname;
8033: if ($cnum =~ /^$match_courseid$/) {
8034: my $chome=&homeserver($cnum,$udom,'true');
8035: if (($chome eq '') || ($chome eq 'no_host')) {
8036: $uname = $cnum;
8037: } else {
8038: $uname = &generate_coursenum($udom,$crstype);
8039: }
8040: } else {
8041: $uname = &generate_coursenum($udom,$crstype);
8042: }
8043: return $uname if ($uname =~ /^error/);
8044: # -------------------------------------------------- Check supplied server name
8045: if (!defined($course_server)) {
8046: if (defined(&domain($udom,'primary'))) {
8047: $course_server = &domain($udom,'primary');
8048: } else {
8049: $course_server = $env{'user.home'};
8050: }
8051: }
8052: my %host_servers =
8053: &Apache::lonnet::get_servers($udom,'library');
8054: unless ($host_servers{$course_server}) {
8055: return 'error: invalid home server for course: '.$course_server;
8056: }
8057: # ------------------------------------------------------------- Make the course
8058: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
8059: $course_server);
8060: unless ($reply eq 'ok') { return 'error: '.$reply; }
8061: my $uhome=&homeserver($uname,$udom,'true');
8062: if (($uhome eq '') || ($uhome eq 'no_host')) {
8063: return 'error: no such course';
8064: }
8065: # ----------------------------------------------------------------- Course made
8066: # log existence
8067: my $now = time;
8068: my $newcourse = {
8069: $udom.'_'.$uname => {
8070: description => $description,
8071: inst_code => $inst_code,
8072: owner => $course_owner,
8073: type => $crstype,
8074: creator => $env{'user.name'}.':'.
8075: $env{'user.domain'},
8076: created => $now,
8077: context => $context,
8078: },
8079: };
8080: &courseidput($udom,$newcourse,$uhome,'notime');
8081: # set toplevel url
8082: my $topurl=$url;
8083: unless ($nonstandard) {
8084: # ------------------------------------------ For standard courses, make top url
8085: my $mapurl=&clutter($url);
8086: if ($mapurl eq '/res/') { $mapurl=''; }
8087: $env{'form.initmap'}=(<<ENDINITMAP);
8088: <map>
8089: <resource id="1" type="start"></resource>
8090: <resource id="2" src="$mapurl"></resource>
8091: <resource id="3" type="finish"></resource>
8092: <link index="1" from="1" to="2"></link>
8093: <link index="2" from="2" to="3"></link>
8094: </map>
8095: ENDINITMAP
8096: $topurl=&declutter(
8097: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
8098: );
8099: }
8100: # ----------------------------------------------------------- Write preferences
8101: &writecoursepref($udom.'_'.$uname,
8102: ('description' => $description,
8103: 'url' => $topurl,
8104: 'internal.creator' => $env{'user.name'}.':'.
8105: $env{'user.domain'},
8106: 'internal.created' => $now,
8107: 'internal.creationcontext' => $context)
8108: );
8109: return '/'.$udom.'/'.$uname;
8110: }
8111:
8112: # ------------------------------------------------------------------- Create ID
8113: sub generate_coursenum {
8114: my ($udom,$crstype) = @_;
8115: my $domdesc = &domain($udom);
8116: return 'error: invalid domain' if ($domdesc eq '');
8117: my $first;
8118: if ($crstype eq 'Community') {
8119: $first = '0';
8120: } else {
8121: $first = int(1+rand(9));
8122: }
8123: my $uname=$first.
8124: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8125: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8126: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8127: # ----------------------------------------------- Make sure that does not exist
8128: my $uhome=&homeserver($uname,$udom,'true');
8129: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8130: if ($crstype eq 'Community') {
8131: $first = '0';
8132: } else {
8133: $first = int(1+rand(9));
8134: }
8135: $uname=$first.
8136: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
8137: substr($$.time,0,5).unpack("H8",pack("I32",time)).
8138: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
8139: $uhome=&homeserver($uname,$udom,'true');
8140: unless (($uhome eq '') || ($uhome eq 'no_host')) {
8141: return 'error: unable to generate unique course-ID';
8142: }
8143: }
8144: return $uname;
8145: }
8146:
8147: sub is_course {
8148: my ($cdom, $cnum) = scalar(@_) == 1 ?
8149: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
8150:
8151: return unless $cdom and $cnum;
8152:
8153: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
8154: '.');
8155:
8156: return unless exists($courses{$cdom.'_'.$cnum});
8157: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
8158: }
8159:
8160: sub store_userdata {
8161: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
8162: my $result;
8163: if ($datakey ne '') {
8164: if (ref($storehash) eq 'HASH') {
8165: if ($udom eq '' || $uname eq '') {
8166: $udom = $env{'user.domain'};
8167: $uname = $env{'user.name'};
8168: }
8169: my $uhome=&homeserver($uname,$udom);
8170: if (($uhome eq '') || ($uhome eq 'no_host')) {
8171: $result = 'error: no_host';
8172: } else {
8173: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
8174: $storehash->{'host'} = $perlvar{'lonHostID'};
8175:
8176: my $namevalue='';
8177: foreach my $key (keys(%{$storehash})) {
8178: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
8179: }
8180: $namevalue=~s/\&$//;
8181: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
8182: $namevalue,$uhome);
8183: }
8184: } else {
8185: $result = 'error: data to store was not a hash reference';
8186: }
8187: } else {
8188: $result= 'error: invalid requestkey';
8189: }
8190: return $result;
8191: }
8192:
8193: # ---------------------------------------------------------- Assign Custom Role
8194:
8195: sub assigncustomrole {
8196: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
8197: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
8198: $end,$start,$deleteflag,$selfenroll,$context);
8199: }
8200:
8201: # ----------------------------------------------------------------- Revoke Role
8202:
8203: sub revokerole {
8204: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
8205: my $now=time;
8206: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
8207: }
8208:
8209: # ---------------------------------------------------------- Revoke Custom Role
8210:
8211: sub revokecustomrole {
8212: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
8213: my $now=time;
8214: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
8215: $deleteflag,$selfenroll,$context);
8216: }
8217:
8218: # ------------------------------------------------------------ Disk usage
8219: sub diskusage {
8220: my ($udom,$uname,$directorypath,$getpropath)=@_;
8221: $directorypath =~ s/\/$//;
8222: my $listing=&reply('du2:'.&escape($directorypath).':'
8223: .&escape($getpropath).':'.&escape($uname).':'
8224: .&escape($udom),homeserver($uname,$udom));
8225: if ($listing eq 'unknown_cmd') {
8226: if ($getpropath) {
8227: $directorypath = &propath($udom,$uname).'/'.$directorypath;
8228: }
8229: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
8230: }
8231: return $listing;
8232: }
8233:
8234: sub is_locked {
8235: my ($file_name, $domain, $user, $which) = @_;
8236: my @check;
8237: my $is_locked;
8238: push (@check,$file_name);
8239: my %locked = &get('file_permissions',\@check,
8240: $env{'user.domain'},$env{'user.name'});
8241: my ($tmp)=keys(%locked);
8242: if ($tmp=~/^error:/) { undef(%locked); }
8243:
8244: if (ref($locked{$file_name}) eq 'ARRAY') {
8245: $is_locked = 'false';
8246: foreach my $entry (@{$locked{$file_name}}) {
8247: if (ref($entry) eq 'ARRAY') {
8248: $is_locked = 'true';
8249: if (ref($which) eq 'ARRAY') {
8250: push(@{$which},$entry);
8251: } else {
8252: last;
8253: }
8254: }
8255: }
8256: } else {
8257: $is_locked = 'false';
8258: }
8259: return $is_locked;
8260: }
8261:
8262: sub declutter_portfile {
8263: my ($file) = @_;
8264: $file =~ s{^(/portfolio/|portfolio/)}{/};
8265: return $file;
8266: }
8267:
8268: # ------------------------------------------------------------- Mark as Read Only
8269:
8270: sub mark_as_readonly {
8271: my ($domain,$user,$files,$what) = @_;
8272: my %current_permissions = &dump('file_permissions',$domain,$user);
8273: my ($tmp)=keys(%current_permissions);
8274: if ($tmp=~/^error:/) { undef(%current_permissions); }
8275: foreach my $file (@{$files}) {
8276: $file = &declutter_portfile($file);
8277: push(@{$current_permissions{$file}},$what);
8278: }
8279: &put('file_permissions',\%current_permissions,$domain,$user);
8280: return;
8281: }
8282:
8283: # ------------------------------------------------------------Save Selected Files
8284:
8285: sub save_selected_files {
8286: my ($user, $path, @files) = @_;
8287: my $filename = $user."savedfiles";
8288: my @other_files = &files_not_in_path($user, $path);
8289: open (OUT, '>'.$tmpdir.$filename);
8290: foreach my $file (@files) {
8291: print (OUT $env{'form.currentpath'}.$file."\n");
8292: }
8293: foreach my $file (@other_files) {
8294: print (OUT $file."\n");
8295: }
8296: close (OUT);
8297: return 'ok';
8298: }
8299:
8300: sub clear_selected_files {
8301: my ($user) = @_;
8302: my $filename = $user."savedfiles";
8303: open (OUT, '>'.LONCAPA::tempdir().$filename);
8304: print (OUT undef);
8305: close (OUT);
8306: return ("ok");
8307: }
8308:
8309: sub files_in_path {
8310: my ($user, $path) = @_;
8311: my $filename = $user."savedfiles";
8312: my %return_files;
8313: open (IN, '<'.LONCAPA::tempdir().$filename);
8314: while (my $line_in = <IN>) {
8315: chomp ($line_in);
8316: my @paths_and_file = split (m!/!, $line_in);
8317: my $file_part = pop (@paths_and_file);
8318: my $path_part = join ('/', @paths_and_file);
8319: $path_part.='/';
8320: my $path_and_file = $path_part.$file_part;
8321: if ($path_part eq $path) {
8322: $return_files{$file_part}= 'selected';
8323: }
8324: }
8325: close (IN);
8326: return (\%return_files);
8327: }
8328:
8329: # called in portfolio select mode, to show files selected NOT in current directory
8330: sub files_not_in_path {
8331: my ($user, $path) = @_;
8332: my $filename = $user."savedfiles";
8333: my @return_files;
8334: my $path_part;
8335: open(IN, '<'.LONCAPA::.$filename);
8336: while (my $line = <IN>) {
8337: #ok, I know it's clunky, but I want it to work
8338: my @paths_and_file = split(m|/|, $line);
8339: my $file_part = pop(@paths_and_file);
8340: chomp($file_part);
8341: my $path_part = join('/', @paths_and_file);
8342: $path_part .= '/';
8343: my $path_and_file = $path_part.$file_part;
8344: if ($path_part ne $path) {
8345: push(@return_files, ($path_and_file));
8346: }
8347: }
8348: close(OUT);
8349: return (@return_files);
8350: }
8351:
8352: #----------------------------------------------Get portfolio file permissions
8353:
8354: sub get_portfile_permissions {
8355: my ($domain,$user) = @_;
8356: my %current_permissions = &dump('file_permissions',$domain,$user);
8357: my ($tmp)=keys(%current_permissions);
8358: if ($tmp=~/^error:/) { undef(%current_permissions); }
8359: return \%current_permissions;
8360: }
8361:
8362: #---------------------------------------------Get portfolio file access controls
8363:
8364: sub get_access_controls {
8365: my ($current_permissions,$group,$file) = @_;
8366: my %access;
8367: my $real_file = $file;
8368: $file =~ s/\.meta$//;
8369: if (defined($file)) {
8370: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
8371: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
8372: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
8373: }
8374: }
8375: } else {
8376: foreach my $key (keys(%{$current_permissions})) {
8377: if ($key =~ /\0accesscontrol$/) {
8378: if (defined($group)) {
8379: if ($key !~ m-^\Q$group\E/-) {
8380: next;
8381: }
8382: }
8383: my ($fullpath) = split(/\0/,$key);
8384: if (ref($$current_permissions{$key}) eq 'HASH') {
8385: foreach my $control (keys(%{$$current_permissions{$key}})) {
8386: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
8387: }
8388: }
8389: }
8390: }
8391: }
8392: return %access;
8393: }
8394:
8395: sub modify_access_controls {
8396: my ($file_name,$changes,$domain,$user)=@_;
8397: my ($outcome,$deloutcome);
8398: my %store_permissions;
8399: my %new_values;
8400: my %new_control;
8401: my %translation;
8402: my @deletions = ();
8403: my $now = time;
8404: if (exists($$changes{'activate'})) {
8405: if (ref($$changes{'activate'}) eq 'HASH') {
8406: my @newitems = sort(keys(%{$$changes{'activate'}}));
8407: my $numnew = scalar(@newitems);
8408: for (my $i=0; $i<$numnew; $i++) {
8409: my $newkey = $newitems[$i];
8410: my $newid = &Apache::loncommon::get_cgi_id();
8411: if ($newkey =~ /^\d+:/) {
8412: $newkey =~ s/^(\d+)/$newid/;
8413: $translation{$1} = $newid;
8414: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
8415: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
8416: $translation{$1} = $newid;
8417: }
8418: $new_values{$file_name."\0".$newkey} =
8419: $$changes{'activate'}{$newitems[$i]};
8420: $new_control{$newkey} = $now;
8421: }
8422: }
8423: }
8424: my %todelete;
8425: my %changed_items;
8426: foreach my $action ('delete','update') {
8427: if (exists($$changes{$action})) {
8428: if (ref($$changes{$action}) eq 'HASH') {
8429: foreach my $key (keys(%{$$changes{$action}})) {
8430: my ($itemnum) = ($key =~ /^([^:]+):/);
8431: if ($action eq 'delete') {
8432: $todelete{$itemnum} = 1;
8433: } else {
8434: $changed_items{$itemnum} = $key;
8435: }
8436: }
8437: }
8438: }
8439: }
8440: # get lock on access controls for file.
8441: my $lockhash = {
8442: $file_name."\0".'locked_access_records' => $env{'user.name'}.
8443: ':'.$env{'user.domain'},
8444: };
8445: my $tries = 0;
8446: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8447:
8448: while (($gotlock ne 'ok') && $tries <3) {
8449: $tries ++;
8450: sleep 1;
8451: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
8452: }
8453: if ($gotlock eq 'ok') {
8454: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
8455: my ($tmp)=keys(%curr_permissions);
8456: if ($tmp=~/^error:/) { undef(%curr_permissions); }
8457: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
8458: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
8459: if (ref($curr_controls) eq 'HASH') {
8460: foreach my $control_item (keys(%{$curr_controls})) {
8461: my ($itemnum) = ($control_item =~ /^([^:]+):/);
8462: if (defined($todelete{$itemnum})) {
8463: push(@deletions,$file_name."\0".$control_item);
8464: } else {
8465: if (defined($changed_items{$itemnum})) {
8466: $new_control{$changed_items{$itemnum}} = $now;
8467: push(@deletions,$file_name."\0".$control_item);
8468: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
8469: } else {
8470: $new_control{$control_item} = $$curr_controls{$control_item};
8471: }
8472: }
8473: }
8474: }
8475: }
8476: my ($group);
8477: if (&is_course($domain,$user)) {
8478: ($group,my $file) = split(/\//,$file_name,2);
8479: }
8480: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
8481: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
8482: $outcome = &put('file_permissions',\%new_values,$domain,$user);
8483: # remove lock
8484: my @del_lock = ($file_name."\0".'locked_access_records');
8485: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
8486: my $sqlresult =
8487: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
8488: $group);
8489: } else {
8490: $outcome = "error: could not obtain lockfile\n";
8491: }
8492: return ($outcome,$deloutcome,\%new_values,\%translation);
8493: }
8494:
8495: sub make_public_indefinitely {
8496: my ($requrl) = @_;
8497: my $now = time;
8498: my $action = 'activate';
8499: my $aclnum = 0;
8500: if (&is_portfolio_url($requrl)) {
8501: my (undef,$udom,$unum,$file_name,$group) =
8502: &parse_portfolio_url($requrl);
8503: my $current_perms = &get_portfile_permissions($udom,$unum);
8504: my %access_controls = &get_access_controls($current_perms,
8505: $group,$file_name);
8506: foreach my $key (keys(%{$access_controls{$file_name}})) {
8507: my ($num,$scope,$end,$start) =
8508: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8509: if ($scope eq 'public') {
8510: if ($start <= $now && $end == 0) {
8511: $action = 'none';
8512: } else {
8513: $action = 'update';
8514: $aclnum = $num;
8515: }
8516: last;
8517: }
8518: }
8519: if ($action eq 'none') {
8520: return 'ok';
8521: } else {
8522: my %changes;
8523: my $newend = 0;
8524: my $newstart = $now;
8525: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
8526: $changes{$action}{$newkey} = {
8527: type => 'public',
8528: time => {
8529: start => $newstart,
8530: end => $newend,
8531: },
8532: };
8533: my ($outcome,$deloutcome,$new_values,$translation) =
8534: &modify_access_controls($file_name,\%changes,$udom,$unum);
8535: return $outcome;
8536: }
8537: } else {
8538: return 'invalid';
8539: }
8540: }
8541:
8542: #------------------------------------------------------Get Marked as Read Only
8543:
8544: sub get_marked_as_readonly {
8545: my ($domain,$user,$what,$group) = @_;
8546: my $current_permissions = &get_portfile_permissions($domain,$user);
8547: my @readonly_files;
8548: my $cmp1=$what;
8549: if (ref($what)) { $cmp1=join('',@{$what}) };
8550: while (my ($file_name,$value) = each(%{$current_permissions})) {
8551: if (defined($group)) {
8552: if ($file_name !~ m-^\Q$group\E/-) {
8553: next;
8554: }
8555: }
8556: if (ref($value) eq "ARRAY"){
8557: foreach my $stored_what (@{$value}) {
8558: my $cmp2=$stored_what;
8559: if (ref($stored_what) eq 'ARRAY') {
8560: $cmp2=join('',@{$stored_what});
8561: }
8562: if ($cmp1 eq $cmp2) {
8563: push(@readonly_files, $file_name);
8564: last;
8565: } elsif (!defined($what)) {
8566: push(@readonly_files, $file_name);
8567: last;
8568: }
8569: }
8570: }
8571: }
8572: return @readonly_files;
8573: }
8574: #-----------------------------------------------------------Get Marked as Read Only Hash
8575:
8576: sub get_marked_as_readonly_hash {
8577: my ($current_permissions,$group,$what) = @_;
8578: my %readonly_files;
8579: while (my ($file_name,$value) = each(%{$current_permissions})) {
8580: if (defined($group)) {
8581: if ($file_name !~ m-^\Q$group\E/-) {
8582: next;
8583: }
8584: }
8585: if (ref($value) eq "ARRAY"){
8586: foreach my $stored_what (@{$value}) {
8587: if (ref($stored_what) eq 'ARRAY') {
8588: foreach my $lock_descriptor(@{$stored_what}) {
8589: if ($lock_descriptor eq 'graded') {
8590: $readonly_files{$file_name} = 'graded';
8591: } elsif ($lock_descriptor eq 'handback') {
8592: $readonly_files{$file_name} = 'handback';
8593: } else {
8594: if (!exists($readonly_files{$file_name})) {
8595: $readonly_files{$file_name} = 'locked';
8596: }
8597: }
8598: }
8599: }
8600: }
8601: }
8602: }
8603: return %readonly_files;
8604: }
8605: # ------------------------------------------------------------ Unmark as Read Only
8606:
8607: sub unmark_as_readonly {
8608: # unmarks $file_name (if $file_name is defined), or all files locked by $what
8609: # for portfolio submissions, $what contains [$symb,$crsid]
8610: my ($domain,$user,$what,$file_name,$group) = @_;
8611: $file_name = &declutter_portfile($file_name);
8612: my $symb_crs = $what;
8613: if (ref($what)) { $symb_crs=join('',@$what); }
8614: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
8615: my ($tmp)=keys(%current_permissions);
8616: if ($tmp=~/^error:/) { undef(%current_permissions); }
8617: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
8618: foreach my $file (@readonly_files) {
8619: my $clean_file = &declutter_portfile($file);
8620: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
8621: my $current_locks = $current_permissions{$file};
8622: my @new_locks;
8623: my @del_keys;
8624: if (ref($current_locks) eq "ARRAY"){
8625: foreach my $locker (@{$current_locks}) {
8626: my $compare=$locker;
8627: if (ref($locker) eq 'ARRAY') {
8628: $compare=join('',@{$locker});
8629: if ($compare ne $symb_crs) {
8630: push(@new_locks, $locker);
8631: }
8632: }
8633: }
8634: if (scalar(@new_locks) > 0) {
8635: $current_permissions{$file} = \@new_locks;
8636: } else {
8637: push(@del_keys, $file);
8638: &del('file_permissions',\@del_keys, $domain, $user);
8639: delete($current_permissions{$file});
8640: }
8641: }
8642: }
8643: &put('file_permissions',\%current_permissions,$domain,$user);
8644: return;
8645: }
8646:
8647: # ------------------------------------------------------------ Directory lister
8648:
8649: sub dirlist {
8650: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
8651: $uri=~s/^\///;
8652: $uri=~s/\/$//;
8653: my ($udom, $uname);
8654: if ($getuserdir) {
8655: $udom = $userdomain;
8656: $uname = $username;
8657: } else {
8658: (undef,$udom,$uname)=split(/\//,$uri);
8659: if(defined($userdomain)) {
8660: $udom = $userdomain;
8661: }
8662: if(defined($username)) {
8663: $uname = $username;
8664: }
8665: }
8666: my ($dirRoot,$listing,@listing_results);
8667:
8668: $dirRoot = $perlvar{'lonDocRoot'};
8669: if (defined($getpropath)) {
8670: $dirRoot = &propath($udom,$uname);
8671: $dirRoot =~ s/\/$//;
8672: } elsif (defined($getuserdir)) {
8673: my $subdir=$uname.'__';
8674: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
8675: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
8676: ."/$udom/$subdir/$uname";
8677: } elsif (defined($alternateRoot)) {
8678: $dirRoot = $alternateRoot;
8679: }
8680:
8681: if($udom) {
8682: if($uname) {
8683: my $uhome = &homeserver($uname,$udom);
8684: if ($uhome eq 'no_host') {
8685: return ([],'no_host');
8686: }
8687: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
8688: .$getuserdir.':'.&escape($dirRoot)
8689: .':'.&escape($uname).':'.&escape($udom),$uhome);
8690: if ($listing eq 'unknown_cmd') {
8691: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
8692: } else {
8693: @listing_results = map { &unescape($_); } split(/:/,$listing);
8694: }
8695: if ($listing eq 'unknown_cmd') {
8696: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
8697: @listing_results = split(/:/,$listing);
8698: } else {
8699: @listing_results = map { &unescape($_); } split(/:/,$listing);
8700: }
8701: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8702: ($listing eq 'rejected') || ($listing eq 'refused') ||
8703: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8704: return ([],$listing);
8705: } else {
8706: return (\@listing_results);
8707: }
8708: } elsif(!$alternateRoot) {
8709: my (%allusers,%listerror);
8710: my %servers = &get_servers($udom,'library');
8711: foreach my $tryserver (keys(%servers)) {
8712: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
8713: &escape($udom),$tryserver);
8714: if ($listing eq 'unknown_cmd') {
8715: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
8716: $udom, $tryserver);
8717: } else {
8718: @listing_results = map { &unescape($_); } split(/:/,$listing);
8719: }
8720: if ($listing eq 'unknown_cmd') {
8721: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
8722: $udom, $tryserver);
8723: @listing_results = split(/:/,$listing);
8724: } else {
8725: @listing_results =
8726: map { &unescape($_); } split(/:/,$listing);
8727: }
8728: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
8729: ($listing eq 'rejected') || ($listing eq 'refused') ||
8730: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
8731: $listerror{$tryserver} = $listing;
8732: } else {
8733: foreach my $line (@listing_results) {
8734: my ($entry) = split(/&/,$line,2);
8735: $allusers{$entry} = 1;
8736: }
8737: }
8738: }
8739: my @alluserslist=();
8740: foreach my $user (sort(keys(%allusers))) {
8741: push(@alluserslist,$user.'&user');
8742: }
8743: return (\@alluserslist);
8744: } else {
8745: return ([],'missing username');
8746: }
8747: } elsif(!defined($getpropath)) {
8748: my $path = $perlvar{'lonDocRoot'}.'/res/';
8749: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
8750: return (\@all_domains);
8751: } else {
8752: return ([],'missing domain');
8753: }
8754: }
8755:
8756: # --------------------------------------------- GetFileTimestamp
8757: # This function utilizes dirlist and returns the date stamp for
8758: # when it was last modified. It will also return an error of -1
8759: # if an error occurs
8760:
8761: sub GetFileTimestamp {
8762: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
8763: $studentDomain = &LONCAPA::clean_domain($studentDomain);
8764: $studentName = &LONCAPA::clean_username($studentName);
8765: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
8766: undef,$getuserdir);
8767: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8768: return -1;
8769: }
8770: if (ref($fileref) eq 'ARRAY') {
8771: my @stats = split('&',$fileref->[0]);
8772: # @stats contains first the filename, then the stat output
8773: return $stats[10]; # so this is 10 instead of 9.
8774: } else {
8775: return -1;
8776: }
8777: }
8778:
8779: sub stat_file {
8780: my ($uri) = @_;
8781: $uri = &clutter_with_no_wrapper($uri);
8782:
8783: my ($udom,$uname,$file);
8784: if ($uri =~ m-^/(uploaded|editupload)/-) {
8785: ($udom,$uname,$file) =
8786: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
8787: $file = 'userfiles/'.$file;
8788: }
8789: if ($uri =~ m-^/res/-) {
8790: ($udom,$uname) =
8791: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
8792: $file = $uri;
8793: }
8794:
8795: if (!$udom || !$uname || !$file) {
8796: # unable to handle the uri
8797: return ();
8798: }
8799: my $getpropath;
8800: if ($file =~ /^userfiles\//) {
8801: $getpropath = 1;
8802: }
8803: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
8804: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
8805: return ();
8806: } else {
8807: if (ref($listref) eq 'ARRAY') {
8808: my @stats = split('&',$listref->[0]);
8809: shift(@stats); #filename is first
8810: return @stats;
8811: }
8812: }
8813: return ();
8814: }
8815:
8816: # -------------------------------------------------------- Value of a Condition
8817:
8818: # gets the value of a specific preevaluated condition
8819: # stored in the string $env{user.state.<cid>}
8820: # or looks up a condition reference in the bighash and if if hasn't
8821: # already been evaluated recurses into docondval to get the value of
8822: # the condition, then memoizing it to
8823: # $env{user.state.<cid>.<condition>}
8824: sub directcondval {
8825: my $number=shift;
8826: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
8827: &Apache::lonuserstate::evalstate();
8828: }
8829: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
8830: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
8831: } elsif ($number =~ /^_/) {
8832: my $sub_condition;
8833: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8834: &GDBM_READER(),0640)) {
8835: $sub_condition=$bighash{'conditions'.$number};
8836: untie(%bighash);
8837: }
8838: my $value = &docondval($sub_condition);
8839: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
8840: return $value;
8841: }
8842: if ($env{'user.state.'.$env{'request.course.id'}}) {
8843: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
8844: } else {
8845: return 2;
8846: }
8847: }
8848:
8849: # get the collection of conditions for this resource
8850: sub condval {
8851: my $condidx=shift;
8852: my $allpathcond='';
8853: foreach my $cond (split(/\|/,$condidx)) {
8854: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
8855: $allpathcond.=
8856: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
8857: }
8858: }
8859: $allpathcond=~s/\|$//;
8860: return &docondval($allpathcond);
8861: }
8862:
8863: #evaluates an expression of conditions
8864: sub docondval {
8865: my ($allpathcond) = @_;
8866: my $result=0;
8867: if ($env{'request.course.id'}
8868: && defined($allpathcond)) {
8869: my $operand='|';
8870: my @stack;
8871: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
8872: if ($chunk eq '(') {
8873: push @stack,($operand,$result);
8874: } elsif ($chunk eq ')') {
8875: my $before=pop @stack;
8876: if (pop @stack eq '&') {
8877: $result=$result>$before?$before:$result;
8878: } else {
8879: $result=$result>$before?$result:$before;
8880: }
8881: } elsif (($chunk eq '&') || ($chunk eq '|')) {
8882: $operand=$chunk;
8883: } else {
8884: my $new=directcondval($chunk);
8885: if ($operand eq '&') {
8886: $result=$result>$new?$new:$result;
8887: } else {
8888: $result=$result>$new?$result:$new;
8889: }
8890: }
8891: }
8892: }
8893: return $result;
8894: }
8895:
8896: # ---------------------------------------------------- Devalidate courseresdata
8897:
8898: sub devalidatecourseresdata {
8899: my ($coursenum,$coursedomain)=@_;
8900: my $hashid=$coursenum.':'.$coursedomain;
8901: &devalidate_cache_new('courseres',$hashid);
8902: }
8903:
8904:
8905: # --------------------------------------------------- Course Resourcedata Query
8906: #
8907: # Parameters:
8908: # $coursenum - Number of the course.
8909: # $coursedomain - Domain at which the course was created.
8910: # Returns:
8911: # A hash of the course parameters along (I think) with timestamps
8912: # and version info.
8913:
8914: sub get_courseresdata {
8915: my ($coursenum,$coursedomain)=@_;
8916: my $coursehom=&homeserver($coursenum,$coursedomain);
8917: my $hashid=$coursenum.':'.$coursedomain;
8918: my ($result,$cached)=&is_cached_new('courseres',$hashid);
8919: my %dumpreply;
8920: unless (defined($cached)) {
8921: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
8922: $result=\%dumpreply;
8923: my ($tmp) = keys(%dumpreply);
8924: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
8925: &do_cache_new('courseres',$hashid,$result,600);
8926: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
8927: return $tmp;
8928: } elsif ($tmp =~ /^(error)/) {
8929: $result=undef;
8930: &do_cache_new('courseres',$hashid,$result,600);
8931: }
8932: }
8933: return $result;
8934: }
8935:
8936: sub devalidateuserresdata {
8937: my ($uname,$udom)=@_;
8938: my $hashid="$udom:$uname";
8939: &devalidate_cache_new('userres',$hashid);
8940: }
8941:
8942: sub get_userresdata {
8943: my ($uname,$udom)=@_;
8944: #most student don\'t have any data set, check if there is some data
8945: if (&EXT_cache_status($udom,$uname)) { return undef; }
8946:
8947: my $hashid="$udom:$uname";
8948: my ($result,$cached)=&is_cached_new('userres',$hashid);
8949: if (!defined($cached)) {
8950: my %resourcedata=&dump('resourcedata',$udom,$uname);
8951: $result=\%resourcedata;
8952: &do_cache_new('userres',$hashid,$result,600);
8953: }
8954: my ($tmp)=keys(%$result);
8955: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
8956: return $result;
8957: }
8958: #error 2 occurs when the .db doesn't exist
8959: if ($tmp!~/error: 2 /) {
8960: &logthis("<font color=\"blue\">WARNING:".
8961: " Trying to get resource data for ".
8962: $uname." at ".$udom.": ".
8963: $tmp."</font>");
8964: } elsif ($tmp=~/error: 2 /) {
8965: #&EXT_cache_set($udom,$uname);
8966: &do_cache_new('userres',$hashid,undef,600);
8967: undef($tmp); # not really an error so don't send it back
8968: }
8969: return $tmp;
8970: }
8971: #----------------------------------------------- resdata - return resource data
8972: # Purpose:
8973: # Return resource data for either users or for a course.
8974: # Parameters:
8975: # $name - Course/user name.
8976: # $domain - Name of the domain the user/course is registered on.
8977: # $type - Type of thing $name is (must be 'course' or 'user'
8978: # @which - Array of names of resources desired.
8979: # Returns:
8980: # The value of the first reasource in @which that is found in the
8981: # resource hash.
8982: # Exceptional Conditions:
8983: # If the $type passed in is not valid (not the string 'course' or
8984: # 'user', an undefined reference is returned.
8985: # If none of the resources are found, an undef is returned
8986: sub resdata {
8987: my ($name,$domain,$type,@which)=@_;
8988: my $result;
8989: if ($type eq 'course') {
8990: $result=&get_courseresdata($name,$domain);
8991: } elsif ($type eq 'user') {
8992: $result=&get_userresdata($name,$domain);
8993: }
8994: if (!ref($result)) { return $result; }
8995: foreach my $item (@which) {
8996: if (defined($result->{$item->[0]})) {
8997: return [$result->{$item->[0]},$item->[1]];
8998: }
8999: }
9000: return undef;
9001: }
9002:
9003: #
9004: # EXT resource caching routines
9005: #
9006:
9007: sub clear_EXT_cache_status {
9008: &delenv('cache.EXT.');
9009: }
9010:
9011: sub EXT_cache_status {
9012: my ($target_domain,$target_user) = @_;
9013: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9014: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
9015: # We know already the user has no data
9016: return 1;
9017: } else {
9018: return 0;
9019: }
9020: }
9021:
9022: sub EXT_cache_set {
9023: my ($target_domain,$target_user) = @_;
9024: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
9025: #&appenv({$cachename => time});
9026: }
9027:
9028: # --------------------------------------------------------- Value of a Variable
9029: sub EXT {
9030:
9031: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
9032: unless ($varname) { return ''; }
9033: #get real user name/domain, courseid and symb
9034: my $courseid;
9035: my $publicuser;
9036: if ($symbparm) {
9037: $symbparm=&get_symb_from_alias($symbparm);
9038: }
9039: if (!($uname && $udom)) {
9040: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
9041: if (!$symbparm) { $symbparm=$cursymb; }
9042: } else {
9043: $courseid=$env{'request.course.id'};
9044: }
9045: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
9046: my $rest;
9047: if (defined($therest[0])) {
9048: $rest=join('.',@therest);
9049: } else {
9050: $rest='';
9051: }
9052:
9053: my $qualifierrest=$qualifier;
9054: if ($rest) { $qualifierrest.='.'.$rest; }
9055: my $spacequalifierrest=$space;
9056: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
9057: if ($realm eq 'user') {
9058: # --------------------------------------------------------------- user.resource
9059: if ($space eq 'resource') {
9060: if ( (defined($Apache::lonhomework::parsing_a_problem)
9061: || defined($Apache::lonhomework::parsing_a_task))
9062: &&
9063: ($symbparm eq &symbread()) ) {
9064: # if we are in the middle of processing the resource the
9065: # get the value we are planning on committing
9066: if (defined($Apache::lonhomework::results{$qualifierrest})) {
9067: return $Apache::lonhomework::results{$qualifierrest};
9068: } else {
9069: return $Apache::lonhomework::history{$qualifierrest};
9070: }
9071: } else {
9072: my %restored;
9073: if ($publicuser || $env{'request.state'} eq 'construct') {
9074: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
9075: } else {
9076: %restored=&restore($symbparm,$courseid,$udom,$uname);
9077: }
9078: return $restored{$qualifierrest};
9079: }
9080: # ----------------------------------------------------------------- user.access
9081: } elsif ($space eq 'access') {
9082: # FIXME - not supporting calls for a specific user
9083: return &allowed($qualifier,$rest);
9084: # ------------------------------------------ user.preferences, user.environment
9085: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
9086: if (($uname eq $env{'user.name'}) &&
9087: ($udom eq $env{'user.domain'})) {
9088: return $env{join('.',('environment',$qualifierrest))};
9089: } else {
9090: my %returnhash;
9091: if (!$publicuser) {
9092: %returnhash=&userenvironment($udom,$uname,
9093: $qualifierrest);
9094: }
9095: return $returnhash{$qualifierrest};
9096: }
9097: # ----------------------------------------------------------------- user.course
9098: } elsif ($space eq 'course') {
9099: # FIXME - not supporting calls for a specific user
9100: return $env{join('.',('request.course',$qualifier))};
9101: # ------------------------------------------------------------------- user.role
9102: } elsif ($space eq 'role') {
9103: # FIXME - not supporting calls for a specific user
9104: my ($role,$where)=split(/\./,$env{'request.role'});
9105: if ($qualifier eq 'value') {
9106: return $role;
9107: } elsif ($qualifier eq 'extent') {
9108: return $where;
9109: }
9110: # ----------------------------------------------------------------- user.domain
9111: } elsif ($space eq 'domain') {
9112: return $udom;
9113: # ------------------------------------------------------------------- user.name
9114: } elsif ($space eq 'name') {
9115: return $uname;
9116: # ---------------------------------------------------- Any other user namespace
9117: } else {
9118: my %reply;
9119: if (!$publicuser) {
9120: %reply=&get($space,[$qualifierrest],$udom,$uname);
9121: }
9122: return $reply{$qualifierrest};
9123: }
9124: } elsif ($realm eq 'query') {
9125: # ---------------------------------------------- pull stuff out of query string
9126: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
9127: [$spacequalifierrest]);
9128: return $env{'form.'.$spacequalifierrest};
9129: } elsif ($realm eq 'request') {
9130: # ------------------------------------------------------------- request.browser
9131: if ($space eq 'browser') {
9132: return $env{'browser.'.$qualifier};
9133: # ------------------------------------------------------------ request.filename
9134: } else {
9135: return $env{'request.'.$spacequalifierrest};
9136: }
9137: } elsif ($realm eq 'course') {
9138: # ---------------------------------------------------------- course.description
9139: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
9140: } elsif ($realm eq 'resource') {
9141:
9142: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
9143: if (!$symbparm) { $symbparm=&symbread(); }
9144: }
9145:
9146: if ($space eq 'title') {
9147: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
9148: return &gettitle($symbparm);
9149: }
9150:
9151: if ($space eq 'map') {
9152: my ($map) = &decode_symb($symbparm);
9153: return &symbread($map);
9154: }
9155: if ($space eq 'filename') {
9156: if ($symbparm) {
9157: return &clutter((&decode_symb($symbparm))[2]);
9158: }
9159: return &hreflocation('',$env{'request.filename'});
9160: }
9161:
9162: my ($section, $group, @groups);
9163: my ($courselevelm,$courselevel);
9164: if ($symbparm && defined($courseid) &&
9165: $courseid eq $env{'request.course.id'}) {
9166:
9167: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
9168:
9169: # ----------------------------------------------------- Cascading lookup scheme
9170: my $symbp=$symbparm;
9171: my $mapp=&deversion((&decode_symb($symbp))[0]);
9172:
9173: my $symbparm=$symbp.'.'.$spacequalifierrest;
9174: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
9175:
9176: if (($env{'user.name'} eq $uname) &&
9177: ($env{'user.domain'} eq $udom)) {
9178: $section=$env{'request.course.sec'};
9179: @groups = split(/:/,$env{'request.course.groups'});
9180: @groups=&sort_course_groups($courseid,@groups);
9181: } else {
9182: if (! defined($usection)) {
9183: $section=&getsection($udom,$uname,$courseid);
9184: } else {
9185: $section = $usection;
9186: }
9187: @groups = &get_users_groups($udom,$uname,$courseid);
9188: }
9189:
9190: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
9191: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
9192: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
9193:
9194: $courselevel=$courseid.'.'.$spacequalifierrest;
9195: my $courselevelr=$courseid.'.'.$symbparm;
9196: $courselevelm=$courseid.'.'.$mapparm;
9197:
9198: # ----------------------------------------------------------- first, check user
9199:
9200: my $userreply=&resdata($uname,$udom,'user',
9201: ([$courselevelr,'resource'],
9202: [$courselevelm,'map' ],
9203: [$courselevel, 'course' ]));
9204: if (defined($userreply)) { return &get_reply($userreply); }
9205:
9206: # ------------------------------------------------ second, check some of course
9207: my $coursereply;
9208: if (@groups > 0) {
9209: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
9210: $mapparm,$spacequalifierrest);
9211: if (defined($coursereply)) { return &get_reply($coursereply); }
9212: }
9213:
9214: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9215: $env{'course.'.$courseid.'.domain'},
9216: 'course',
9217: ([$seclevelr, 'resource'],
9218: [$seclevelm, 'map' ],
9219: [$seclevel, 'course' ],
9220: [$courselevelr,'resource']));
9221: if (defined($coursereply)) { return &get_reply($coursereply); }
9222:
9223: # ------------------------------------------------------ third, check map parms
9224: my %parmhash=();
9225: my $thisparm='';
9226: if (tie(%parmhash,'GDBM_File',
9227: $env{'request.course.fn'}.'_parms.db',
9228: &GDBM_READER(),0640)) {
9229: $thisparm=$parmhash{$symbparm};
9230: untie(%parmhash);
9231: }
9232: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
9233: }
9234: # ------------------------------------------ fourth, look in resource metadata
9235:
9236: $spacequalifierrest=~s/\./\_/;
9237: my $filename;
9238: if (!$symbparm) { $symbparm=&symbread(); }
9239: if ($symbparm) {
9240: $filename=(&decode_symb($symbparm))[2];
9241: } else {
9242: $filename=$env{'request.filename'};
9243: }
9244: my $metadata=&metadata($filename,$spacequalifierrest);
9245: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9246: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
9247: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
9248:
9249: # ---------------------------------------------- fourth, look in rest of course
9250: if ($symbparm && defined($courseid) &&
9251: $courseid eq $env{'request.course.id'}) {
9252: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
9253: $env{'course.'.$courseid.'.domain'},
9254: 'course',
9255: ([$courselevelm,'map' ],
9256: [$courselevel, 'course']));
9257: if (defined($coursereply)) { return &get_reply($coursereply); }
9258: }
9259: # ------------------------------------------------------------------ Cascade up
9260: unless ($space eq '0') {
9261: my @parts=split(/_/,$space);
9262: my $id=pop(@parts);
9263: my $part=join('_',@parts);
9264: if ($part eq '') { $part='0'; }
9265: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
9266: $symbparm,$udom,$uname,$section,1);
9267: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
9268: }
9269: if ($recurse) { return undef; }
9270: my $pack_def=&packages_tab_default($filename,$varname);
9271: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
9272: # ---------------------------------------------------- Any other user namespace
9273: } elsif ($realm eq 'environment') {
9274: # ----------------------------------------------------------------- environment
9275: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
9276: return $env{'environment.'.$spacequalifierrest};
9277: } else {
9278: if ($uname eq 'anonymous' && $udom eq '') {
9279: return '';
9280: }
9281: my %returnhash=&userenvironment($udom,$uname,
9282: $spacequalifierrest);
9283: return $returnhash{$spacequalifierrest};
9284: }
9285: } elsif ($realm eq 'system') {
9286: # ----------------------------------------------------------------- system.time
9287: if ($space eq 'time') {
9288: return time;
9289: }
9290: } elsif ($realm eq 'server') {
9291: # ----------------------------------------------------------------- system.time
9292: if ($space eq 'name') {
9293: return $ENV{'SERVER_NAME'};
9294: }
9295: }
9296: return '';
9297: }
9298:
9299: sub get_reply {
9300: my ($reply_value) = @_;
9301: if (ref($reply_value) eq 'ARRAY') {
9302: if (wantarray) {
9303: return @$reply_value;
9304: }
9305: return $reply_value->[0];
9306: } else {
9307: return $reply_value;
9308: }
9309: }
9310:
9311: sub check_group_parms {
9312: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
9313: my @groupitems = ();
9314: my $resultitem;
9315: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
9316: foreach my $group (@{$groups}) {
9317: foreach my $level (@levels) {
9318: my $item = $courseid.'.['.$group.'].'.$level->[0];
9319: push(@groupitems,[$item,$level->[1]]);
9320: }
9321: }
9322: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
9323: $env{'course.'.$courseid.'.domain'},
9324: 'course',@groupitems);
9325: return $coursereply;
9326: }
9327:
9328: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
9329: my ($courseid,@groups) = @_;
9330: @groups = sort(@groups);
9331: return @groups;
9332: }
9333:
9334: sub packages_tab_default {
9335: my ($uri,$varname)=@_;
9336: my (undef,$part,$name)=split(/\./,$varname);
9337:
9338: my (@extension,@specifics,$do_default);
9339: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
9340: my ($pack_type,$pack_part)=split(/_/,$package,2);
9341: if ($pack_type eq 'default') {
9342: $do_default=1;
9343: } elsif ($pack_type eq 'extension') {
9344: push(@extension,[$package,$pack_type,$pack_part]);
9345: } elsif ($pack_part eq $part || $pack_type eq 'part') {
9346: # only look at packages defaults for packages that this id is
9347: push(@specifics,[$package,$pack_type,$pack_part]);
9348: }
9349: }
9350: # first look for a package that matches the requested part id
9351: foreach my $package (@specifics) {
9352: my (undef,$pack_type,$pack_part)=@{$package};
9353: next if ($pack_part ne $part);
9354: if (defined($packagetab{"$pack_type&$name&default"})) {
9355: return $packagetab{"$pack_type&$name&default"};
9356: }
9357: }
9358: # look for any possible matching non extension_ package
9359: foreach my $package (@specifics) {
9360: my (undef,$pack_type,$pack_part)=@{$package};
9361: if (defined($packagetab{"$pack_type&$name&default"})) {
9362: return $packagetab{"$pack_type&$name&default"};
9363: }
9364: if ($pack_type eq 'part') { $pack_part='0'; }
9365: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
9366: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
9367: }
9368: }
9369: # look for any posible extension_ match
9370: foreach my $package (@extension) {
9371: my ($package,$pack_type)=@{$package};
9372: if (defined($packagetab{"$pack_type&$name&default"})) {
9373: return $packagetab{"$pack_type&$name&default"};
9374: }
9375: if (defined($packagetab{$package."&$name&default"})) {
9376: return $packagetab{$package."&$name&default"};
9377: }
9378: }
9379: # look for a global default setting
9380: if ($do_default && defined($packagetab{"default&$name&default"})) {
9381: return $packagetab{"default&$name&default"};
9382: }
9383: return undef;
9384: }
9385:
9386: sub add_prefix_and_part {
9387: my ($prefix,$part)=@_;
9388: my $keyroot;
9389: if (defined($prefix) && $prefix !~ /^__/) {
9390: # prefix that has a part already
9391: $keyroot=$prefix;
9392: } elsif (defined($prefix)) {
9393: # prefix that is missing a part
9394: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
9395: } else {
9396: # no prefix at all
9397: if (defined($part)) { $keyroot='_'.$part; }
9398: }
9399: return $keyroot;
9400: }
9401:
9402: # ---------------------------------------------------------------- Get metadata
9403:
9404: my %metaentry;
9405: my %importedpartids;
9406: sub metadata {
9407: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
9408: $uri=&declutter($uri);
9409: # if it is a non metadata possible uri return quickly
9410: if (($uri eq '') ||
9411: (($uri =~ m|^/*adm/|) &&
9412: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
9413: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
9414: return undef;
9415: }
9416: if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/)
9417: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
9418: return undef;
9419: }
9420: my $filename=$uri;
9421: $uri=~s/\.meta$//;
9422: #
9423: # Is the metadata already cached?
9424: # Look at timestamp of caching
9425: # Everything is cached by the main uri, libraries are never directly cached
9426: #
9427: if (!defined($liburi)) {
9428: my ($result,$cached)=&is_cached_new('meta',$uri);
9429: if (defined($cached)) { return $result->{':'.$what}; }
9430: }
9431: {
9432: # Imported parts would go here
9433: my %importedids=();
9434: my @origfileimportpartids=();
9435: my $importedparts=0;
9436: #
9437: # Is this a recursive call for a library?
9438: #
9439: # if (! exists($metacache{$uri})) {
9440: # $metacache{$uri}={};
9441: # }
9442: my $cachetime = 60*60;
9443: if ($liburi) {
9444: $liburi=&declutter($liburi);
9445: $filename=$liburi;
9446: } else {
9447: &devalidate_cache_new('meta',$uri);
9448: undef(%metaentry);
9449: }
9450: my %metathesekeys=();
9451: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
9452: my $metastring;
9453: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
9454: my $which = &hreflocation('','/'.($liburi || $uri));
9455: $metastring =
9456: &Apache::lonnet::ssi_body($which,
9457: ('grade_target' => 'meta'));
9458: $cachetime = 1; # only want this cached in the child not long term
9459: } elsif (($uri !~ m -^(editupload)/-) &&
9460: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
9461: my $file=&filelocation('',&clutter($filename));
9462: #push(@{$metaentry{$uri.'.file'}},$file);
9463: $metastring=&getfile($file);
9464: }
9465: my $parser=HTML::LCParser->new(\$metastring);
9466: my $token;
9467: undef %metathesekeys;
9468: while ($token=$parser->get_token) {
9469: if ($token->[0] eq 'S') {
9470: if (defined($token->[2]->{'package'})) {
9471: #
9472: # This is a package - get package info
9473: #
9474: my $package=$token->[2]->{'package'};
9475: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9476: if (defined($token->[2]->{'id'})) {
9477: $keyroot.='_'.$token->[2]->{'id'};
9478: }
9479: if ($metaentry{':packages'}) {
9480: $metaentry{':packages'}.=','.$package.$keyroot;
9481: } else {
9482: $metaentry{':packages'}=$package.$keyroot;
9483: }
9484: foreach my $pack_entry (keys(%packagetab)) {
9485: my $part=$keyroot;
9486: $part=~s/^\_//;
9487: if ($pack_entry=~/^\Q$package\E\&/ ||
9488: $pack_entry=~/^\Q$package\E_0\&/) {
9489: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
9490: # ignore package.tab specified default values
9491: # here &package_tab_default() will fetch those
9492: if ($subp eq 'default') { next; }
9493: my $value=$packagetab{$pack_entry};
9494: my $unikey;
9495: if ($pack =~ /_0$/) {
9496: $unikey='parameter_0_'.$name;
9497: $part=0;
9498: } else {
9499: $unikey='parameter'.$keyroot.'_'.$name;
9500: }
9501: if ($subp eq 'display') {
9502: $value.=' [Part: '.$part.']';
9503: }
9504: $metaentry{':'.$unikey.'.part'}=$part;
9505: $metathesekeys{$unikey}=1;
9506: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9507: $metaentry{':'.$unikey.'.'.$subp}=$value;
9508: }
9509: if (defined($metaentry{':'.$unikey.'.default'})) {
9510: $metaentry{':'.$unikey}=
9511: $metaentry{':'.$unikey.'.default'};
9512: }
9513: }
9514: }
9515: } else {
9516: #
9517: # This is not a package - some other kind of start tag
9518: #
9519: my $entry=$token->[1];
9520: my $unikey='';
9521:
9522: if ($entry eq 'import') {
9523: #
9524: # Importing a library here
9525: #
9526: my $location=$parser->get_text('/import');
9527: my $dir=$filename;
9528: $dir=~s|[^/]*$||;
9529: $location=&filelocation($dir,$location);
9530:
9531: my $importmode=$token->[2]->{'importmode'};
9532: if ($importmode eq 'problem') {
9533: # Import as problem/response
9534: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9535: } elsif ($importmode eq 'part') {
9536: # Import as part(s)
9537: $importedparts=1;
9538: # We need to get the original file and the imported file to get the part order correct
9539: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
9540: # Load and inspect original file
9541: if ($#origfileimportpartids<0) {
9542: undef(%importedpartids);
9543: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
9544: my $origfile=&getfile($origfilelocation);
9545: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9546: }
9547:
9548: # Load and inspect imported file
9549: my $impfile=&getfile($location);
9550: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
9551: if ($#impfilepartids>=0) {
9552: # This problem had parts
9553: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
9554: } else {
9555: # Importing by turning a single problem into a problem part
9556: # It gets the import-tags ID as part-ID
9557: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
9558: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
9559: }
9560: } else {
9561: # Normal import
9562: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
9563: if (defined($token->[2]->{'id'})) {
9564: $unikey.='_'.$token->[2]->{'id'};
9565: }
9566: }
9567:
9568: if ($depthcount<20) {
9569: my $metadata =
9570: &metadata($uri,'keys', $location,$unikey,
9571: $depthcount+1);
9572: foreach my $meta (split(',',$metadata)) {
9573: $metaentry{':'.$meta}=$metaentry{':'.$meta};
9574: $metathesekeys{$meta}=1;
9575: }
9576:
9577: }
9578: } else {
9579: #
9580: # Not importing, some other kind of non-package, non-library start tag
9581: #
9582: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
9583: if (defined($token->[2]->{'id'})) {
9584: $unikey.='_'.$token->[2]->{'id'};
9585: }
9586: if (defined($token->[2]->{'name'})) {
9587: $unikey.='_'.$token->[2]->{'name'};
9588: }
9589: $metathesekeys{$unikey}=1;
9590: foreach my $param (@{$token->[3]}) {
9591: $metaentry{':'.$unikey.'.'.$param} =
9592: $token->[2]->{$param};
9593: }
9594: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
9595: my $default=$metaentry{':'.$unikey.'.default'};
9596: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
9597: # only ws inside the tag, and not in default, so use default
9598: # as value
9599: $metaentry{':'.$unikey}=$default;
9600: } elsif ( $internaltext =~ /\S/ ) {
9601: # something interesting inside the tag
9602: $metaentry{':'.$unikey}=$internaltext;
9603: } else {
9604: # no interesting values, don't set a default
9605: }
9606: # end of not-a-package not-a-library import
9607: }
9608: # end of not-a-package start tag
9609: }
9610: # the next is the end of "start tag"
9611: }
9612: }
9613: my ($extension) = ($uri =~ /\.(\w+)$/);
9614: $extension = lc($extension);
9615: if ($extension eq 'htm') { $extension='html'; }
9616:
9617: foreach my $key (keys(%packagetab)) {
9618: #no specific packages #how's our extension
9619: if ($key!~/^extension_\Q$extension\E&/) { next; }
9620: &metadata_create_package_def($uri,$key,'extension_'.$extension,
9621: \%metathesekeys);
9622: }
9623:
9624: if (!exists($metaentry{':packages'})
9625: || $packagetab{"import_defaults&extension_$extension"}) {
9626: foreach my $key (keys(%packagetab)) {
9627: #no specific packages well let's get default then
9628: if ($key!~/^default&/) { next; }
9629: &metadata_create_package_def($uri,$key,'default',
9630: \%metathesekeys);
9631: }
9632: }
9633: # are there custom rights to evaluate
9634: if ($metaentry{':copyright'} eq 'custom') {
9635:
9636: #
9637: # Importing a rights file here
9638: #
9639: unless ($depthcount) {
9640: my $location=$metaentry{':customdistributionfile'};
9641: my $dir=$filename;
9642: $dir=~s|[^/]*$||;
9643: $location=&filelocation($dir,$location);
9644: my $rights_metadata =
9645: &metadata($uri,'keys',$location,'_rights',
9646: $depthcount+1);
9647: foreach my $rights (split(',',$rights_metadata)) {
9648: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
9649: $metathesekeys{$rights}=1;
9650: }
9651: }
9652: }
9653: # uniqifiy package listing
9654: my %seen;
9655: my @uniq_packages =
9656: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
9657: $metaentry{':packages'} = join(',',@uniq_packages);
9658:
9659: if ($importedparts) {
9660: # We had imported parts and need to rebuild partorder
9661: $metaentry{':partorder'}='';
9662: $metathesekeys{'partorder'}=1;
9663: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
9664: if ($origfileimportpartids[$index] eq 'part') {
9665: # original part, part of the problem
9666: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
9667: } else {
9668: # we have imported parts at this position
9669: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
9670: }
9671: }
9672: $metaentry{':partorder'}=~s/^\,//;
9673: }
9674:
9675: $metaentry{':keys'} = join(',',keys(%metathesekeys));
9676: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
9677: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
9678: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
9679: # this is the end of "was not already recently cached
9680: }
9681: return $metaentry{':'.$what};
9682: }
9683:
9684: sub metadata_create_package_def {
9685: my ($uri,$key,$package,$metathesekeys)=@_;
9686: my ($pack,$name,$subp)=split(/\&/,$key);
9687: if ($subp eq 'default') { next; }
9688:
9689: if (defined($metaentry{':packages'})) {
9690: $metaentry{':packages'}.=','.$package;
9691: } else {
9692: $metaentry{':packages'}=$package;
9693: }
9694: my $value=$packagetab{$key};
9695: my $unikey;
9696: $unikey='parameter_0_'.$name;
9697: $metaentry{':'.$unikey.'.part'}=0;
9698: $$metathesekeys{$unikey}=1;
9699: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
9700: $metaentry{':'.$unikey.'.'.$subp}=$value;
9701: }
9702: if (defined($metaentry{':'.$unikey.'.default'})) {
9703: $metaentry{':'.$unikey}=
9704: $metaentry{':'.$unikey.'.default'};
9705: }
9706: }
9707:
9708: sub metadata_generate_part0 {
9709: my ($metadata,$metacache,$uri) = @_;
9710: my %allnames;
9711: foreach my $metakey (keys(%$metadata)) {
9712: if ($metakey=~/^parameter\_(.*)/) {
9713: my $part=$$metacache{':'.$metakey.'.part'};
9714: my $name=$$metacache{':'.$metakey.'.name'};
9715: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
9716: $allnames{$name}=$part;
9717: }
9718: }
9719: }
9720: foreach my $name (keys(%allnames)) {
9721: $$metadata{"parameter_0_$name"}=1;
9722: my $key=":parameter_0_$name";
9723: $$metacache{"$key.part"}='0';
9724: $$metacache{"$key.name"}=$name;
9725: $$metacache{"$key.type"}=$$metacache{':parameter_'.
9726: $allnames{$name}.'_'.$name.
9727: '.type'};
9728: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
9729: '.display'};
9730: my $expr='[Part: '.$allnames{$name}.']';
9731: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
9732: $$metacache{"$key.display"}=$olddis;
9733: }
9734: }
9735:
9736: # ------------------------------------------------------ Devalidate title cache
9737:
9738: sub devalidate_title_cache {
9739: my ($url)=@_;
9740: if (!$env{'request.course.id'}) { return; }
9741: my $symb=&symbread($url);
9742: if (!$symb) { return; }
9743: my $key=$env{'request.course.id'}."\0".$symb;
9744: &devalidate_cache_new('title',$key);
9745: }
9746:
9747: # ------------------------------------------------- Get the title of a course
9748:
9749: sub current_course_title {
9750: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
9751: }
9752: # ------------------------------------------------- Get the title of a resource
9753:
9754: sub gettitle {
9755: my $urlsymb=shift;
9756: my $symb=&symbread($urlsymb);
9757: if ($symb) {
9758: my $key=$env{'request.course.id'}."\0".$symb;
9759: my ($result,$cached)=&is_cached_new('title',$key);
9760: if (defined($cached)) {
9761: return $result;
9762: }
9763: my ($map,$resid,$url)=&decode_symb($symb);
9764: my $title='';
9765: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
9766: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
9767: } else {
9768: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9769: &GDBM_READER(),0640)) {
9770: my $mapid=$bighash{'map_pc_'.&clutter($map)};
9771: $title=$bighash{'title_'.$mapid.'.'.$resid};
9772: untie(%bighash);
9773: }
9774: }
9775: $title=~s/\&colon\;/\:/gs;
9776: if ($title) {
9777: # Remember both $symb and $title for dynamic metadata
9778: $accesshash{$symb.'___crstitle'}=$title;
9779: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
9780: # Cache this title and then return it
9781: return &do_cache_new('title',$key,$title,600);
9782: }
9783: $urlsymb=$url;
9784: }
9785: my $title=&metadata($urlsymb,'title');
9786: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
9787: return $title;
9788: }
9789:
9790: sub get_slot {
9791: my ($which,$cnum,$cdom)=@_;
9792: if (!$cnum || !$cdom) {
9793: (undef,my $courseid)=&whichuser();
9794: $cdom=$env{'course.'.$courseid.'.domain'};
9795: $cnum=$env{'course.'.$courseid.'.num'};
9796: }
9797: my $key=join("\0",'slots',$cdom,$cnum,$which);
9798: my %slotinfo;
9799: if (exists($remembered{$key})) {
9800: $slotinfo{$which} = $remembered{$key};
9801: } else {
9802: %slotinfo=&get('slots',[$which],$cdom,$cnum);
9803: &Apache::lonhomework::showhash(%slotinfo);
9804: my ($tmp)=keys(%slotinfo);
9805: if ($tmp=~/^error:/) { return (); }
9806: $remembered{$key} = $slotinfo{$which};
9807: }
9808: if (ref($slotinfo{$which}) eq 'HASH') {
9809: return %{$slotinfo{$which}};
9810: }
9811: return $slotinfo{$which};
9812: }
9813:
9814: sub get_reservable_slots {
9815: my ($cnum,$cdom,$uname,$udom) = @_;
9816: my $now = time;
9817: my $reservable_info;
9818: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
9819: if (exists($remembered{$key})) {
9820: $reservable_info = $remembered{$key};
9821: } else {
9822: my %resv;
9823: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
9824: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
9825: $reservable_info = \%resv;
9826: $remembered{$key} = $reservable_info;
9827: }
9828: return $reservable_info;
9829: }
9830:
9831: sub get_course_slots {
9832: my ($cnum,$cdom) = @_;
9833: my $hashid=$cnum.':'.$cdom;
9834: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
9835: if (defined($cached)) {
9836: if (ref($result) eq 'HASH') {
9837: return %{$result};
9838: }
9839: } else {
9840: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
9841: my ($tmp) = keys(%slots);
9842: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
9843: &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
9844: return %slots;
9845: }
9846: }
9847: return;
9848: }
9849:
9850: sub devalidate_slots_cache {
9851: my ($cnum,$cdom)=@_;
9852: my $hashid=$cnum.':'.$cdom;
9853: &devalidate_cache_new('allslots',$hashid);
9854: }
9855:
9856: sub get_coursechange {
9857: my ($cdom,$cnum) = @_;
9858: if ($cdom eq '' || $cnum eq '') {
9859: return unless ($env{'request.course.id'});
9860: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9861: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9862: }
9863: my $hashid=$cdom.'_'.$cnum;
9864: my ($change,$cached)=&is_cached_new('crschange',$hashid);
9865: if ((defined($cached)) && ($change ne '')) {
9866: return $change;
9867: } else {
9868: my %crshash;
9869: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
9870: if ($crshash{'internal.contentchange'} eq '') {
9871: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
9872: if ($change eq '') {
9873: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
9874: $change = $crshash{'internal.created'};
9875: }
9876: } else {
9877: $change = $crshash{'internal.contentchange'};
9878: }
9879: my $cachetime = 600;
9880: &do_cache_new('crschange',$hashid,$change,$cachetime);
9881: }
9882: return $change;
9883: }
9884:
9885: sub devalidate_coursechange_cache {
9886: my ($cnum,$cdom)=@_;
9887: my $hashid=$cnum.':'.$cdom;
9888: &devalidate_cache_new('crschange',$hashid);
9889: }
9890:
9891: # ------------------------------------------------- Update symbolic store links
9892:
9893: sub symblist {
9894: my ($mapname,%newhash)=@_;
9895: $mapname=&deversion(&declutter($mapname));
9896: my %hash;
9897: if (($env{'request.course.fn'}) && (%newhash)) {
9898: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
9899: &GDBM_WRCREAT(),0640)) {
9900: foreach my $url (keys(%newhash)) {
9901: next if ($url eq 'last_known'
9902: && $env{'form.no_update_last_known'});
9903: $hash{declutter($url)}=&encode_symb($mapname,
9904: $newhash{$url}->[1],
9905: $newhash{$url}->[0]);
9906: }
9907: if (untie(%hash)) {
9908: return 'ok';
9909: }
9910: }
9911: }
9912: return 'error';
9913: }
9914:
9915: # --------------------------------------------------------------- Verify a symb
9916:
9917: sub symbverify {
9918: my ($symb,$thisurl)=@_;
9919: my $thisfn=$thisurl;
9920: $thisfn=&declutter($thisfn);
9921: # direct jump to resource in page or to a sequence - will construct own symbs
9922: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
9923: # check URL part
9924: my ($map,$resid,$url)=&decode_symb($symb);
9925:
9926: unless ($url eq $thisfn) { return 0; }
9927:
9928: $symb=&symbclean($symb);
9929: $thisurl=&deversion($thisurl);
9930: $thisfn=&deversion($thisfn);
9931:
9932: my %bighash;
9933: my $okay=0;
9934:
9935: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9936: &GDBM_READER(),0640)) {
9937: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
9938: $thisurl =~ s/\?.+$//;
9939: }
9940: my $ids=$bighash{'ids_'.&clutter($thisurl)};
9941: unless ($ids) {
9942: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
9943: $ids=$bighash{$idkey};
9944: }
9945: if ($ids) {
9946: # ------------------------------------------------------------------- Has ID(s)
9947: foreach my $id (split(/\,/,$ids)) {
9948: my ($mapid,$resid)=split(/\./,$id);
9949: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
9950: $symb =~ s/\?.+$//;
9951: }
9952: if (
9953: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
9954: eq $symb) {
9955: if (($env{'request.role.adv'}) ||
9956: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
9957: ($thisurl eq '/adm/navmaps')) {
9958: $okay=1;
9959: }
9960: }
9961: }
9962: }
9963: untie(%bighash);
9964: }
9965: return $okay;
9966: }
9967:
9968: # --------------------------------------------------------------- Clean-up symb
9969:
9970: sub symbclean {
9971: my $symb=shift;
9972: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9973: # remove version from map
9974: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
9975:
9976: # remove version from URL
9977: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
9978:
9979: # remove wrapper
9980:
9981: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
9982: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
9983: return $symb;
9984: }
9985:
9986: # ---------------------------------------------- Split symb to find map and url
9987:
9988: sub encode_symb {
9989: my ($map,$resid,$url)=@_;
9990: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
9991: }
9992:
9993: sub decode_symb {
9994: my $symb=shift;
9995: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
9996: my ($map,$resid,$url)=split(/___/,$symb);
9997: return (&fixversion($map),$resid,&fixversion($url));
9998: }
9999:
10000: sub fixversion {
10001: my $fn=shift;
10002: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
10003: my %bighash;
10004: my $uri=&clutter($fn);
10005: my $key=$env{'request.course.id'}.'_'.$uri;
10006: # is this cached?
10007: my ($result,$cached)=&is_cached_new('courseresversion',$key);
10008: if (defined($cached)) { return $result; }
10009: # unfortunately not cached, or expired
10010: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10011: &GDBM_READER(),0640)) {
10012: if ($bighash{'version_'.$uri}) {
10013: my $version=$bighash{'version_'.$uri};
10014: unless (($version eq 'mostrecent') ||
10015: ($version==&getversion($uri))) {
10016: $uri=~s/\.(\w+)$/\.$version\.$1/;
10017: }
10018: }
10019: untie %bighash;
10020: }
10021: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
10022: }
10023:
10024: sub deversion {
10025: my $url=shift;
10026: $url=~s/\.\d+\.(\w+)$/\.$1/;
10027: return $url;
10028: }
10029:
10030: # ------------------------------------------------------ Return symb list entry
10031:
10032: sub symbread {
10033: my ($thisfn,$donotrecurse)=@_;
10034: my $cache_str='request.symbread.cached.'.$thisfn;
10035: if (defined($env{$cache_str})) {
10036: if (($thisfn) || ($env{$cache_str} ne '')) {
10037: return $env{$cache_str};
10038: }
10039: }
10040: # no filename provided? try from environment
10041: unless ($thisfn) {
10042: if ($env{'request.symb'}) {
10043: return $env{$cache_str}=&symbclean($env{'request.symb'});
10044: }
10045: $thisfn=$env{'request.filename'};
10046: }
10047: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10048: # is that filename actually a symb? Verify, clean, and return
10049: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
10050: if (&symbverify($thisfn,$1)) {
10051: return $env{$cache_str}=&symbclean($thisfn);
10052: }
10053: }
10054: $thisfn=declutter($thisfn);
10055: my %hash;
10056: my %bighash;
10057: my $syval='';
10058: if (($env{'request.course.fn'}) && ($thisfn)) {
10059: my $targetfn = $thisfn;
10060: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
10061: $targetfn = 'adm/wrapper/'.$thisfn;
10062: }
10063: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
10064: $targetfn=$1;
10065: }
10066: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
10067: &GDBM_READER(),0640)) {
10068: $syval=$hash{$targetfn};
10069: untie(%hash);
10070: }
10071: # ---------------------------------------------------------- There was an entry
10072: if ($syval) {
10073: #unless ($syval=~/\_\d+$/) {
10074: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
10075: #&appenv({'request.ambiguous' => $thisfn});
10076: #return $env{$cache_str}='';
10077: #}
10078: #$syval.=$1;
10079: #}
10080: } else {
10081: # ------------------------------------------------------- Was not in symb table
10082: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10083: &GDBM_READER(),0640)) {
10084: # ---------------------------------------------- Get ID(s) for current resource
10085: my $ids=$bighash{'ids_'.&clutter($thisfn)};
10086: unless ($ids) {
10087: $ids=$bighash{'ids_/'.$thisfn};
10088: }
10089: unless ($ids) {
10090: # alias?
10091: $ids=$bighash{'mapalias_'.$thisfn};
10092: }
10093: if ($ids) {
10094: # ------------------------------------------------------------------- Has ID(s)
10095: my @possibilities=split(/\,/,$ids);
10096: if ($#possibilities==0) {
10097: # ----------------------------------------------- There is only one possibility
10098: my ($mapid,$resid)=split(/\./,$ids);
10099: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10100: $resid,$thisfn);
10101: } elsif (!$donotrecurse) {
10102: # ------------------------------------------ There is more than one possibility
10103: my $realpossible=0;
10104: foreach my $id (@possibilities) {
10105: my $file=$bighash{'src_'.$id};
10106: if (&allowed('bre',$file)) {
10107: my ($mapid,$resid)=split(/\./,$id);
10108: if ($bighash{'map_type_'.$mapid} ne 'page') {
10109: $realpossible++;
10110: $syval=&encode_symb($bighash{'map_id_'.$mapid},
10111: $resid,$thisfn);
10112: }
10113: }
10114: }
10115: if ($realpossible!=1) { $syval=''; }
10116: } else {
10117: $syval='';
10118: }
10119: }
10120: untie(%bighash)
10121: }
10122: }
10123: if ($syval) {
10124: return $env{$cache_str}=$syval;
10125: }
10126: }
10127: &appenv({'request.ambiguous' => $thisfn});
10128: return $env{$cache_str}='';
10129: }
10130:
10131: # ---------------------------------------------------------- Return random seed
10132:
10133: sub numval {
10134: my $txt=shift;
10135: $txt=~tr/A-J/0-9/;
10136: $txt=~tr/a-j/0-9/;
10137: $txt=~tr/K-T/0-9/;
10138: $txt=~tr/k-t/0-9/;
10139: $txt=~tr/U-Z/0-5/;
10140: $txt=~tr/u-z/0-5/;
10141: $txt=~s/\D//g;
10142: if ($_64bit) { if ($txt > 2**32) { return -1; } }
10143: return int($txt);
10144: }
10145:
10146: sub numval2 {
10147: my $txt=shift;
10148: $txt=~tr/A-J/0-9/;
10149: $txt=~tr/a-j/0-9/;
10150: $txt=~tr/K-T/0-9/;
10151: $txt=~tr/k-t/0-9/;
10152: $txt=~tr/U-Z/0-5/;
10153: $txt=~tr/u-z/0-5/;
10154: $txt=~s/\D//g;
10155: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10156: my $total;
10157: foreach my $val (@txts) { $total+=$val; }
10158: if ($_64bit) { if ($total > 2**32) { return -1; } }
10159: return int($total);
10160: }
10161:
10162: sub numval3 {
10163: use integer;
10164: my $txt=shift;
10165: $txt=~tr/A-J/0-9/;
10166: $txt=~tr/a-j/0-9/;
10167: $txt=~tr/K-T/0-9/;
10168: $txt=~tr/k-t/0-9/;
10169: $txt=~tr/U-Z/0-5/;
10170: $txt=~tr/u-z/0-5/;
10171: $txt=~s/\D//g;
10172: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
10173: my $total;
10174: foreach my $val (@txts) { $total+=$val; }
10175: if ($_64bit) { $total=(($total<<32)>>32); }
10176: return $total;
10177: }
10178:
10179: sub digest {
10180: my ($data)=@_;
10181: my $digest=&Digest::MD5::md5($data);
10182: my ($a,$b,$c,$d)=unpack("iiii",$digest);
10183: my ($e,$f);
10184: {
10185: use integer;
10186: $e=($a+$b);
10187: $f=($c+$d);
10188: if ($_64bit) {
10189: $e=(($e<<32)>>32);
10190: $f=(($f<<32)>>32);
10191: }
10192: }
10193: if (wantarray) {
10194: return ($e,$f);
10195: } else {
10196: my $g;
10197: {
10198: use integer;
10199: $g=($e+$f);
10200: if ($_64bit) {
10201: $g=(($g<<32)>>32);
10202: }
10203: }
10204: return $g;
10205: }
10206: }
10207:
10208: sub latest_rnd_algorithm_id {
10209: return '64bit5';
10210: }
10211:
10212: sub get_rand_alg {
10213: my ($courseid)=@_;
10214: if (!$courseid) { $courseid=(&whichuser())[1]; }
10215: if ($courseid) {
10216: return $env{"course.$courseid.rndseed"};
10217: }
10218: return &latest_rnd_algorithm_id();
10219: }
10220:
10221: sub validCODE {
10222: my ($CODE)=@_;
10223: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
10224: return 0;
10225: }
10226:
10227: sub getCODE {
10228: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
10229: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
10230: defined($Apache::lonhomework::parsing_a_task) ) &&
10231: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
10232: return $Apache::lonhomework::history{'resource.CODE'};
10233: }
10234: return undef;
10235: }
10236: #
10237: # Determines the random seed for a specific context:
10238: #
10239: # parameters:
10240: # symb - in course context the symb for the seed.
10241: # course_id - The course id of the form domain_coursenum.
10242: # domain - Domain for the user.
10243: # course - Course for the user.
10244: # cenv - environment of the course.
10245: #
10246: # NOTE:
10247: # All parameters are picked out of the environment if missing
10248: # or not defined.
10249: # If a symb cannot be determined the current time is used instead.
10250: #
10251: # For a given well defined symb, courside, domain, username,
10252: # and course environment, the seed is reproducible.
10253: #
10254: sub rndseed {
10255: my ($symb,$courseid,$domain,$username, $cenv)=@_;
10256: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
10257: if (!defined($symb)) {
10258: unless ($symb=$wsymb) { return time; }
10259: }
10260: if (!defined $courseid) {
10261: $courseid=$wcourseid;
10262: }
10263: if (!defined $domain) { $domain=$wdomain; }
10264: if (!defined $username) { $username=$wusername }
10265:
10266: my $which;
10267: if (defined($cenv->{'rndseed'})) {
10268: $which = $cenv->{'rndseed'};
10269: } else {
10270: $which =&get_rand_alg($courseid);
10271: }
10272: if (defined(&getCODE())) {
10273:
10274: if ($which eq '64bit5') {
10275: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
10276: } elsif ($which eq '64bit4') {
10277: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
10278: } else {
10279: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
10280: }
10281: } elsif ($which eq '64bit5') {
10282: return &rndseed_64bit5($symb,$courseid,$domain,$username);
10283: } elsif ($which eq '64bit4') {
10284: return &rndseed_64bit4($symb,$courseid,$domain,$username);
10285: } elsif ($which eq '64bit3') {
10286: return &rndseed_64bit3($symb,$courseid,$domain,$username);
10287: } elsif ($which eq '64bit2') {
10288: return &rndseed_64bit2($symb,$courseid,$domain,$username);
10289: } elsif ($which eq '64bit') {
10290: return &rndseed_64bit($symb,$courseid,$domain,$username);
10291: }
10292: return &rndseed_32bit($symb,$courseid,$domain,$username);
10293: }
10294:
10295: sub rndseed_32bit {
10296: my ($symb,$courseid,$domain,$username)=@_;
10297: {
10298: use integer;
10299: my $symbchck=unpack("%32C*",$symb) << 27;
10300: my $symbseed=numval($symb) << 22;
10301: my $namechck=unpack("%32C*",$username) << 17;
10302: my $nameseed=numval($username) << 12;
10303: my $domainseed=unpack("%32C*",$domain) << 7;
10304: my $courseseed=unpack("%32C*",$courseid);
10305: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
10306: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10307: #&logthis("rndseed :$num:$symb");
10308: if ($_64bit) { $num=(($num<<32)>>32); }
10309: return $num;
10310: }
10311: }
10312:
10313: sub rndseed_64bit {
10314: my ($symb,$courseid,$domain,$username)=@_;
10315: {
10316: use integer;
10317: my $symbchck=unpack("%32S*",$symb) << 21;
10318: my $symbseed=numval($symb) << 10;
10319: my $namechck=unpack("%32S*",$username);
10320:
10321: my $nameseed=numval($username) << 21;
10322: my $domainseed=unpack("%32S*",$domain) << 10;
10323: my $courseseed=unpack("%32S*",$courseid);
10324:
10325: my $num1=$symbchck+$symbseed+$namechck;
10326: my $num2=$nameseed+$domainseed+$courseseed;
10327: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10328: #&logthis("rndseed :$num:$symb");
10329: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10330: return "$num1,$num2";
10331: }
10332: }
10333:
10334: sub rndseed_64bit2 {
10335: my ($symb,$courseid,$domain,$username)=@_;
10336: {
10337: use integer;
10338: # strings need to be an even # of cahracters long, it it is odd the
10339: # last characters gets thrown away
10340: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10341: my $symbseed=numval($symb) << 10;
10342: my $namechck=unpack("%32S*",$username.' ');
10343:
10344: my $nameseed=numval($username) << 21;
10345: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10346: my $courseseed=unpack("%32S*",$courseid.' ');
10347:
10348: my $num1=$symbchck+$symbseed+$namechck;
10349: my $num2=$nameseed+$domainseed+$courseseed;
10350: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10351: #&logthis("rndseed :$num:$symb");
10352: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10353: return "$num1,$num2";
10354: }
10355: }
10356:
10357: sub rndseed_64bit3 {
10358: my ($symb,$courseid,$domain,$username)=@_;
10359: {
10360: use integer;
10361: # strings need to be an even # of cahracters long, it it is odd the
10362: # last characters gets thrown away
10363: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10364: my $symbseed=numval2($symb) << 10;
10365: my $namechck=unpack("%32S*",$username.' ');
10366:
10367: my $nameseed=numval2($username) << 21;
10368: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10369: my $courseseed=unpack("%32S*",$courseid.' ');
10370:
10371: my $num1=$symbchck+$symbseed+$namechck;
10372: my $num2=$nameseed+$domainseed+$courseseed;
10373: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10374: #&logthis("rndseed :$num1:$num2:$_64bit");
10375: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10376:
10377: return "$num1:$num2";
10378: }
10379: }
10380:
10381: sub rndseed_64bit4 {
10382: my ($symb,$courseid,$domain,$username)=@_;
10383: {
10384: use integer;
10385: # strings need to be an even # of cahracters long, it it is odd the
10386: # last characters gets thrown away
10387: my $symbchck=unpack("%32S*",$symb.' ') << 21;
10388: my $symbseed=numval3($symb) << 10;
10389: my $namechck=unpack("%32S*",$username.' ');
10390:
10391: my $nameseed=numval3($username) << 21;
10392: my $domainseed=unpack("%32S*",$domain.' ') << 10;
10393: my $courseseed=unpack("%32S*",$courseid.' ');
10394:
10395: my $num1=$symbchck+$symbseed+$namechck;
10396: my $num2=$nameseed+$domainseed+$courseseed;
10397: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
10398: #&logthis("rndseed :$num1:$num2:$_64bit");
10399: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
10400:
10401: return "$num1:$num2";
10402: }
10403: }
10404:
10405: sub rndseed_64bit5 {
10406: my ($symb,$courseid,$domain,$username)=@_;
10407: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
10408: return "$num1:$num2";
10409: }
10410:
10411: sub rndseed_CODE_64bit {
10412: my ($symb,$courseid,$domain,$username)=@_;
10413: {
10414: use integer;
10415: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10416: my $symbseed=numval2($symb);
10417: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10418: my $CODEseed=numval(&getCODE());
10419: my $courseseed=unpack("%32S*",$courseid.' ');
10420: my $num1=$symbseed+$CODEchck;
10421: my $num2=$CODEseed+$courseseed+$symbchck;
10422: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10423: #&logthis("rndseed :$num1:$num2:$symb");
10424: if ($_64bit) { $num1=(($num1<<32)>>32); }
10425: if ($_64bit) { $num2=(($num2<<32)>>32); }
10426: return "$num1:$num2";
10427: }
10428: }
10429:
10430: sub rndseed_CODE_64bit4 {
10431: my ($symb,$courseid,$domain,$username)=@_;
10432: {
10433: use integer;
10434: my $symbchck=unpack("%32S*",$symb.' ') << 16;
10435: my $symbseed=numval3($symb);
10436: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
10437: my $CODEseed=numval3(&getCODE());
10438: my $courseseed=unpack("%32S*",$courseid.' ');
10439: my $num1=$symbseed+$CODEchck;
10440: my $num2=$CODEseed+$courseseed+$symbchck;
10441: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
10442: #&logthis("rndseed :$num1:$num2:$symb");
10443: if ($_64bit) { $num1=(($num1<<32)>>32); }
10444: if ($_64bit) { $num2=(($num2<<32)>>32); }
10445: return "$num1:$num2";
10446: }
10447: }
10448:
10449: sub rndseed_CODE_64bit5 {
10450: my ($symb,$courseid,$domain,$username)=@_;
10451: my $code = &getCODE();
10452: my ($num1,$num2)=&digest("$symb,$courseid,$code");
10453: return "$num1:$num2";
10454: }
10455:
10456: sub setup_random_from_rndseed {
10457: my ($rndseed)=@_;
10458: if ($rndseed =~/([,:])/) {
10459: my ($num1,$num2)=split(/[,:]/,$rndseed);
10460: &Math::Random::random_set_seed(abs($num1),abs($num2));
10461: } else {
10462: &Math::Random::random_set_seed_from_phrase($rndseed);
10463: }
10464: }
10465:
10466: sub latest_receipt_algorithm_id {
10467: return 'receipt3';
10468: }
10469:
10470: sub recunique {
10471: my $fucourseid=shift;
10472: my $unique;
10473: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
10474: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10475: $unique=$env{"course.$fucourseid.internal.encseed"};
10476: } else {
10477: $unique=$perlvar{'lonReceipt'};
10478: }
10479: return unpack("%32C*",$unique);
10480: }
10481:
10482: sub recprefix {
10483: my $fucourseid=shift;
10484: my $prefix;
10485: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
10486: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
10487: $prefix=$env{"course.$fucourseid.internal.encpref"};
10488: } else {
10489: $prefix=$perlvar{'lonHostID'};
10490: }
10491: return unpack("%32C*",$prefix);
10492: }
10493:
10494: sub ireceipt {
10495: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
10496:
10497: my $return =&recprefix($fucourseid).'-';
10498:
10499: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
10500: $env{'request.state'} eq 'construct') {
10501: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
10502: return $return;
10503: }
10504:
10505: my $cuname=unpack("%32C*",$funame);
10506: my $cudom=unpack("%32C*",$fudom);
10507: my $cucourseid=unpack("%32C*",$fucourseid);
10508: my $cusymb=unpack("%32C*",$fusymb);
10509: my $cunique=&recunique($fucourseid);
10510: my $cpart=unpack("%32S*",$part);
10511: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
10512:
10513: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
10514:
10515: $return.= ($cunique%$cuname+
10516: $cunique%$cudom+
10517: $cusymb%$cuname+
10518: $cusymb%$cudom+
10519: $cucourseid%$cuname+
10520: $cucourseid%$cudom+
10521: $cpart%$cuname+
10522: $cpart%$cudom);
10523: } else {
10524: $return.= ($cunique%$cuname+
10525: $cunique%$cudom+
10526: $cusymb%$cuname+
10527: $cusymb%$cudom+
10528: $cucourseid%$cuname+
10529: $cucourseid%$cudom);
10530: }
10531: return $return;
10532: }
10533:
10534: sub receipt {
10535: my ($part)=@_;
10536: my ($symb,$courseid,$domain,$name) = &whichuser();
10537: return &ireceipt($name,$domain,$courseid,$symb,$part);
10538: }
10539:
10540: sub whichuser {
10541: my ($passedsymb)=@_;
10542: my ($symb,$courseid,$domain,$name,$publicuser);
10543: if (defined($env{'form.grade_symb'})) {
10544: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
10545: my $allowed=&allowed('vgr',$tmp_courseid);
10546: if (!$allowed &&
10547: exists($env{'request.course.sec'}) &&
10548: $env{'request.course.sec'} !~ /^\s*$/) {
10549: $allowed=&allowed('vgr',$tmp_courseid.
10550: '/'.$env{'request.course.sec'});
10551: }
10552: if ($allowed) {
10553: ($symb)=&get_env_multiple('form.grade_symb');
10554: $courseid=$tmp_courseid;
10555: ($domain)=&get_env_multiple('form.grade_domain');
10556: ($name)=&get_env_multiple('form.grade_username');
10557: return ($symb,$courseid,$domain,$name,$publicuser);
10558: }
10559: }
10560: if (!$passedsymb) {
10561: $symb=&symbread();
10562: } else {
10563: $symb=$passedsymb;
10564: }
10565: $courseid=$env{'request.course.id'};
10566: $domain=$env{'user.domain'};
10567: $name=$env{'user.name'};
10568: if ($name eq 'public' && $domain eq 'public') {
10569: if (!defined($env{'form.username'})) {
10570: $env{'form.username'}.=time.rand(10000000);
10571: }
10572: $name.=$env{'form.username'};
10573: }
10574: return ($symb,$courseid,$domain,$name,$publicuser);
10575:
10576: }
10577:
10578: # ------------------------------------------------------------ Serves up a file
10579: # returns either the contents of the file or
10580: # -1 if the file doesn't exist
10581: #
10582: # if the target is a file that was uploaded via DOCS,
10583: # a check will be made to see if a current copy exists on the local server,
10584: # if it does this will be served, otherwise a copy will be retrieved from
10585: # the home server for the course and stored in /home/httpd/html/userfiles on
10586: # the local server.
10587:
10588: sub getfile {
10589: my ($file) = @_;
10590: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
10591: &repcopy($file);
10592: return &readfile($file);
10593: }
10594:
10595: sub repcopy_userfile {
10596: my ($file)=@_;
10597: my $londocroot = $perlvar{'lonDocRoot'};
10598: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
10599: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
10600: my ($cdom,$cnum,$filename) =
10601: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
10602: my $uri="/uploaded/$cdom/$cnum/$filename";
10603: if (-e "$file") {
10604: # we already have a local copy, check it out
10605: my @fileinfo = stat($file);
10606: my $rtncode;
10607: my $info;
10608: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
10609: if ($lwpresp ne 'ok') {
10610: # there is no such file anymore, even though we had a local copy
10611: if ($rtncode eq '404') {
10612: unlink($file);
10613: }
10614: return -1;
10615: }
10616: if ($info < $fileinfo[9]) {
10617: # nice, the file we have is up-to-date, just say okay
10618: return 'ok';
10619: } else {
10620: # the file is outdated, get rid of it
10621: unlink($file);
10622: }
10623: }
10624: # one way or the other, at this point, we don't have the file
10625: # construct the correct path for the file
10626: my @parts = ($cdom,$cnum);
10627: if ($filename =~ m|^(.+)/[^/]+$|) {
10628: push @parts, split(/\//,$1);
10629: }
10630: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
10631: foreach my $part (@parts) {
10632: $path .= '/'.$part;
10633: if (!-e $path) {
10634: mkdir($path,0770);
10635: }
10636: }
10637: # now the path exists for sure
10638: # get a user agent
10639: my $ua=new LWP::UserAgent;
10640: my $transferfile=$file.'.in.transfer';
10641: # FIXME: this should flock
10642: if (-e $transferfile) { return 'ok'; }
10643: my $request;
10644: $uri=~s/^\///;
10645: my $homeserver = &homeserver($cnum,$cdom);
10646: my $protocol = $protocol{$homeserver};
10647: $protocol = 'http' if ($protocol ne 'https');
10648: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
10649: my $response=$ua->request($request,$transferfile);
10650: # did it work?
10651: if ($response->is_error()) {
10652: unlink($transferfile);
10653: &logthis("Userfile repcopy failed for $uri");
10654: return -1;
10655: }
10656: # worked, rename the transfer file
10657: rename($transferfile,$file);
10658: return 'ok';
10659: }
10660:
10661: sub tokenwrapper {
10662: my $uri=shift;
10663: $uri=~s|^https?\://([^/]+)||;
10664: $uri=~s|^/||;
10665: $env{'user.environment'}=~/\/([^\/]+)\.id/;
10666: my $token=$1;
10667: my (undef,$udom,$uname,$file)=split('/',$uri,4);
10668: if ($udom && $uname && $file) {
10669: $file=~s|(\?\.*)*$||;
10670: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
10671: my $homeserver = &homeserver($uname,$udom);
10672: my $protocol = $protocol{$homeserver};
10673: $protocol = 'http' if ($protocol ne 'https');
10674: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
10675: (($uri=~/\?/)?'&':'?').'token='.$token.
10676: '&tokenissued='.$perlvar{'lonHostID'};
10677: } else {
10678: return '/adm/notfound.html';
10679: }
10680: }
10681:
10682: # call with reqtype HEAD: get last modification time
10683: # call with reqtype GET: get the file contents
10684: # Do not call this with reqtype GET for large files! It loads everything into memory
10685: #
10686: sub getuploaded {
10687: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
10688: $uri=~s/^\///;
10689: my $homeserver = &homeserver($cnum,$cdom);
10690: my $protocol = $protocol{$homeserver};
10691: $protocol = 'http' if ($protocol ne 'https');
10692: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
10693: my $ua=new LWP::UserAgent;
10694: my $request=new HTTP::Request($reqtype,$uri);
10695: my $response=$ua->request($request);
10696: $$rtncode = $response->code;
10697: if (! $response->is_success()) {
10698: return 'failed';
10699: }
10700: if ($reqtype eq 'HEAD') {
10701: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
10702: } elsif ($reqtype eq 'GET') {
10703: $$info = $response->content;
10704: }
10705: return 'ok';
10706: }
10707:
10708: sub readfile {
10709: my $file = shift;
10710: if ( (! -e $file ) || ($file eq '') ) { return -1; };
10711: my $fh;
10712: open($fh,"<$file");
10713: my $a='';
10714: while (my $line = <$fh>) { $a .= $line; }
10715: return $a;
10716: }
10717:
10718: sub filelocation {
10719: my ($dir,$file) = @_;
10720: my $location;
10721: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
10722:
10723: if ($file =~ m-^/adm/-) {
10724: $file=~s-^/adm/wrapper/-/-;
10725: $file=~s-^/adm/coursedocs/showdoc/-/-;
10726: }
10727:
10728: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
10729: $location = $file;
10730: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
10731: my ($udom,$uname,$filename)=
10732: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
10733: my $home=&homeserver($uname,$udom);
10734: my $is_me=0;
10735: my @ids=¤t_machine_ids();
10736: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
10737: if ($is_me) {
10738: $location=propath($udom,$uname).'/userfiles/'.$filename;
10739: } else {
10740: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
10741: $udom.'/'.$uname.'/'.$filename;
10742: }
10743: } elsif ($file =~ m-^/adm/-) {
10744: $location = $perlvar{'lonDocRoot'}.'/'.$file;
10745: } else {
10746: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10747: $file=~s:^/(res|priv)/:/:;
10748: my $space=$1;
10749: if ( !( $file =~ m:^/:) ) {
10750: $location = $dir. '/'.$file;
10751: } else {
10752: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
10753: }
10754: }
10755: $location=~s://+:/:g; # remove duplicate /
10756: while ($location=~m{/\.\./}) {
10757: if ($location =~ m{/[^/]+/\.\./}) {
10758: $location=~ s{/[^/]+/\.\./}{/}g;
10759: } else {
10760: $location=~ s{/\.\./}{/}g;
10761: }
10762: } #remove dir/..
10763: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
10764: return $location;
10765: }
10766:
10767: sub hreflocation {
10768: my ($dir,$file)=@_;
10769: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
10770: $file=filelocation($dir,$file);
10771: } elsif ($file=~m-^/adm/-) {
10772: $file=~s-^/adm/wrapper/-/-;
10773: $file=~s-^/adm/coursedocs/showdoc/-/-;
10774: }
10775: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
10776: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
10777: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
10778: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
10779: {/uploaded/$1/$2/}x;
10780: }
10781: if ($file=~ m{^/userfiles/}) {
10782: $file =~ s{^/userfiles/}{/uploaded/};
10783: }
10784: return $file;
10785: }
10786:
10787:
10788:
10789:
10790:
10791: sub current_machine_domains {
10792: return &machine_domains(&hostname($perlvar{'lonHostID'}));
10793: }
10794:
10795: sub machine_domains {
10796: my ($hostname) = @_;
10797: my @domains;
10798: my %hostname = &all_hostnames();
10799: while( my($id, $name) = each(%hostname)) {
10800: # &logthis("-$id-$name-$hostname-");
10801: if ($hostname eq $name) {
10802: push(@domains,&host_domain($id));
10803: }
10804: }
10805: return @domains;
10806: }
10807:
10808: sub current_machine_ids {
10809: return &machine_ids(&hostname($perlvar{'lonHostID'}));
10810: }
10811:
10812: sub machine_ids {
10813: my ($hostname) = @_;
10814: $hostname ||= &hostname($perlvar{'lonHostID'});
10815: my @ids;
10816: my %name_to_host = &all_names();
10817: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
10818: return @{ $name_to_host{$hostname} };
10819: }
10820: return;
10821: }
10822:
10823: sub additional_machine_domains {
10824: my @domains;
10825: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
10826: while( my $line = <$fh>) {
10827: $line =~ s/\s//g;
10828: push(@domains,$line);
10829: }
10830: return @domains;
10831: }
10832:
10833: sub default_login_domain {
10834: my $domain = $perlvar{'lonDefDomain'};
10835: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
10836: foreach my $posdom (¤t_machine_domains(),
10837: &additional_machine_domains()) {
10838: if (lc($posdom) eq lc($testdomain)) {
10839: $domain=$posdom;
10840: last;
10841: }
10842: }
10843: return $domain;
10844: }
10845:
10846: # ------------------------------------------------------------- Declutters URLs
10847:
10848: sub declutter {
10849: my $thisfn=shift;
10850: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
10851: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
10852: $thisfn=~s/^\///;
10853: $thisfn=~s|^adm/wrapper/||;
10854: $thisfn=~s|^adm/coursedocs/showdoc/||;
10855: $thisfn=~s/^res\///;
10856: $thisfn=~s/^priv\///;
10857: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
10858: $thisfn=~s/\?.+$//;
10859: }
10860: return $thisfn;
10861: }
10862:
10863: # ------------------------------------------------------------- Clutter up URLs
10864:
10865: sub clutter {
10866: my $thisfn='/'.&declutter(shift);
10867: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
10868: || $thisfn =~ m{^/adm/(includes|pages)} ) {
10869: $thisfn='/res'.$thisfn;
10870: }
10871: if ($thisfn !~m|^/adm|) {
10872: if ($thisfn =~ m|^/ext/|) {
10873: $thisfn='/adm/wrapper'.$thisfn;
10874: } else {
10875: my ($ext) = ($thisfn =~ /\.(\w+)$/);
10876: my $embstyle=&Apache::loncommon::fileembstyle($ext);
10877: if ($embstyle eq 'ssi'
10878: || ($embstyle eq 'hdn')
10879: || ($embstyle eq 'rat')
10880: || ($embstyle eq 'prv')
10881: || ($embstyle eq 'ign')) {
10882: #do nothing with these
10883: } elsif (($embstyle eq 'img')
10884: || ($embstyle eq 'emb')
10885: || ($embstyle eq 'wrp')) {
10886: $thisfn='/adm/wrapper'.$thisfn;
10887: } elsif ($embstyle eq 'unk'
10888: && $thisfn!~/\.(sequence|page)$/) {
10889: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
10890: } else {
10891: # &logthis("Got a blank emb style");
10892: }
10893: }
10894: }
10895: return $thisfn;
10896: }
10897:
10898: sub clutter_with_no_wrapper {
10899: my $uri = &clutter(shift);
10900: if ($uri =~ m-^/adm/-) {
10901: $uri =~ s-^/adm/wrapper/-/-;
10902: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
10903: }
10904: return $uri;
10905: }
10906:
10907: sub freeze_escape {
10908: my ($value)=@_;
10909: if (ref($value)) {
10910: $value=&nfreeze($value);
10911: return '__FROZEN__'.&escape($value);
10912: }
10913: return &escape($value);
10914: }
10915:
10916:
10917: sub thaw_unescape {
10918: my ($value)=@_;
10919: if ($value =~ /^__FROZEN__/) {
10920: substr($value,0,10,undef);
10921: $value=&unescape($value);
10922: return &thaw($value);
10923: }
10924: return &unescape($value);
10925: }
10926:
10927: sub correct_line_ends {
10928: my ($result)=@_;
10929: $$result =~s/\r\n/\n/mg;
10930: $$result =~s/\r/\n/mg;
10931: }
10932: # ================================================================ Main Program
10933:
10934: sub goodbye {
10935: &logthis("Starting Shut down");
10936: #not converted to using infrastruture and probably shouldn't be
10937: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
10938: #converted
10939: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
10940: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
10941: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
10942: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
10943: #1.1 only
10944: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
10945: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
10946: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
10947: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
10948: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
10949: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
10950: &logthis(sprintf("%-20s is %s",'hits',$hits));
10951: &flushcourselogs();
10952: &logthis("Shutting down");
10953: }
10954:
10955: sub get_dns {
10956: my ($url,$func,$ignore_cache) = @_;
10957: if (!$ignore_cache) {
10958: my ($content,$cached)=
10959: &Apache::lonnet::is_cached_new('dns',$url);
10960: if ($cached) {
10961: &$func($content);
10962: return;
10963: }
10964: }
10965:
10966: my %alldns;
10967: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
10968: foreach my $dns (<$config>) {
10969: next if ($dns !~ /^\^(\S*)/x);
10970: my $line = $1;
10971: my ($host,$protocol) = split(/:/,$line);
10972: if ($protocol ne 'https') {
10973: $protocol = 'http';
10974: }
10975: $alldns{$host} = $protocol;
10976: }
10977: while (%alldns) {
10978: my ($dns) = keys(%alldns);
10979: my $ua=new LWP::UserAgent;
10980: $ua->timeout(30);
10981: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
10982: my $response=$ua->request($request);
10983: delete($alldns{$dns});
10984: next if ($response->is_error());
10985: my @content = split("\n",$response->content);
10986: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
10987: &$func(\@content);
10988: return;
10989: }
10990: close($config);
10991: my $which = (split('/',$url))[3];
10992: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
10993: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
10994: my @content = <$config>;
10995: &$func(\@content);
10996: return;
10997: }
10998: # ------------------------------------------------------------ Read domain file
10999: {
11000: my $loaded;
11001: my %domain;
11002:
11003: sub parse_domain_tab {
11004: my ($lines) = @_;
11005: foreach my $line (@$lines) {
11006: next if ($line =~ /^(\#|\s*$ )/x);
11007:
11008: chomp($line);
11009: my ($name,@elements) = split(/:/,$line,9);
11010: my %this_domain;
11011: foreach my $field ('description', 'auth_def', 'auth_arg_def',
11012: 'lang_def', 'city', 'longi', 'lati',
11013: 'primary') {
11014: $this_domain{$field} = shift(@elements);
11015: }
11016: $domain{$name} = \%this_domain;
11017: }
11018: }
11019:
11020: sub reset_domain_info {
11021: undef($loaded);
11022: undef(%domain);
11023: }
11024:
11025: sub load_domain_tab {
11026: my ($ignore_cache) = @_;
11027: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
11028: my $fh;
11029: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
11030: my @lines = <$fh>;
11031: &parse_domain_tab(\@lines);
11032: }
11033: close($fh);
11034: $loaded = 1;
11035: }
11036:
11037: sub domain {
11038: &load_domain_tab() if (!$loaded);
11039:
11040: my ($name,$what) = @_;
11041: return if ( !exists($domain{$name}) );
11042:
11043: if (!$what) {
11044: return $domain{$name}{'description'};
11045: }
11046: return $domain{$name}{$what};
11047: }
11048:
11049: sub domain_info {
11050: &load_domain_tab() if (!$loaded);
11051: return %domain;
11052: }
11053:
11054: }
11055:
11056:
11057: # ------------------------------------------------------------- Read hosts file
11058: {
11059: my %hostname;
11060: my %hostdom;
11061: my %libserv;
11062: my $loaded;
11063: my %name_to_host;
11064: my %internetdom;
11065: my %LC_dns_serv;
11066:
11067: sub parse_hosts_tab {
11068: my ($file) = @_;
11069: foreach my $configline (@$file) {
11070: next if ($configline =~ /^(\#|\s*$ )/x);
11071: chomp($configline);
11072: if ($configline =~ /^\^/) {
11073: if ($configline =~ /^\^([\w.\-]+)/) {
11074: $LC_dns_serv{$1} = 1;
11075: }
11076: next;
11077: }
11078: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
11079: $name=~s/\s//g;
11080: if ($id && $domain && $role && $name) {
11081: $hostname{$id}=$name;
11082: push(@{$name_to_host{$name}}, $id);
11083: $hostdom{$id}=$domain;
11084: if ($role eq 'library') { $libserv{$id}=$name; }
11085: if (defined($protocol)) {
11086: if ($protocol eq 'https') {
11087: $protocol{$id} = $protocol;
11088: } else {
11089: $protocol{$id} = 'http';
11090: }
11091: } else {
11092: $protocol{$id} = 'http';
11093: }
11094: if (defined($intdom)) {
11095: $internetdom{$id} = $intdom;
11096: }
11097: }
11098: }
11099: }
11100:
11101: sub reset_hosts_info {
11102: &purge_remembered();
11103: &reset_domain_info();
11104: &reset_hosts_ip_info();
11105: undef(%name_to_host);
11106: undef(%hostname);
11107: undef(%hostdom);
11108: undef(%libserv);
11109: undef($loaded);
11110: }
11111:
11112: sub load_hosts_tab {
11113: my ($ignore_cache) = @_;
11114: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
11115: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
11116: my @config = <$config>;
11117: &parse_hosts_tab(\@config);
11118: close($config);
11119: $loaded=1;
11120: }
11121:
11122: sub hostname {
11123: &load_hosts_tab() if (!$loaded);
11124:
11125: my ($lonid) = @_;
11126: return $hostname{$lonid};
11127: }
11128:
11129: sub all_hostnames {
11130: &load_hosts_tab() if (!$loaded);
11131:
11132: return %hostname;
11133: }
11134:
11135: sub all_names {
11136: &load_hosts_tab() if (!$loaded);
11137:
11138: return %name_to_host;
11139: }
11140:
11141: sub all_host_domain {
11142: &load_hosts_tab() if (!$loaded);
11143: return %hostdom;
11144: }
11145:
11146: sub is_library {
11147: &load_hosts_tab() if (!$loaded);
11148:
11149: return exists($libserv{$_[0]});
11150: }
11151:
11152: sub all_library {
11153: &load_hosts_tab() if (!$loaded);
11154:
11155: return %libserv;
11156: }
11157:
11158: sub unique_library {
11159: #2x reverse removes all hostnames that appear more than once
11160: my %unique = reverse &all_library();
11161: return reverse %unique;
11162: }
11163:
11164: sub get_servers {
11165: &load_hosts_tab() if (!$loaded);
11166:
11167: my ($domain,$type) = @_;
11168: my %possible_hosts = ($type eq 'library') ? %libserv
11169: : %hostname;
11170: my %result;
11171: if (ref($domain) eq 'ARRAY') {
11172: while ( my ($host,$hostname) = each(%possible_hosts)) {
11173: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
11174: $result{$host} = $hostname;
11175: }
11176: }
11177: } else {
11178: while ( my ($host,$hostname) = each(%possible_hosts)) {
11179: if ($hostdom{$host} eq $domain) {
11180: $result{$host} = $hostname;
11181: }
11182: }
11183: }
11184: return %result;
11185: }
11186:
11187: sub get_unique_servers {
11188: my %unique = reverse &get_servers(@_);
11189: return reverse %unique;
11190: }
11191:
11192: sub host_domain {
11193: &load_hosts_tab() if (!$loaded);
11194:
11195: my ($lonid) = @_;
11196: return $hostdom{$lonid};
11197: }
11198:
11199: sub all_domains {
11200: &load_hosts_tab() if (!$loaded);
11201:
11202: my %seen;
11203: my @uniq = grep(!$seen{$_}++, values(%hostdom));
11204: return @uniq;
11205: }
11206:
11207: sub internet_dom {
11208: &load_hosts_tab() if (!$loaded);
11209:
11210: my ($lonid) = @_;
11211: return $internetdom{$lonid};
11212: }
11213:
11214: sub is_LC_dns {
11215: &load_hosts_tab() if (!$loaded);
11216:
11217: my ($hostname) = @_;
11218: return exists($LC_dns_serv{$hostname});
11219: }
11220:
11221: }
11222:
11223: {
11224: my %iphost;
11225: my %name_to_ip;
11226: my %lonid_to_ip;
11227:
11228: sub get_hosts_from_ip {
11229: my ($ip) = @_;
11230: my %iphosts = &get_iphost();
11231: if (ref($iphosts{$ip})) {
11232: return @{$iphosts{$ip}};
11233: }
11234: return;
11235: }
11236:
11237: sub reset_hosts_ip_info {
11238: undef(%iphost);
11239: undef(%name_to_ip);
11240: undef(%lonid_to_ip);
11241: }
11242:
11243: sub get_host_ip {
11244: my ($lonid) = @_;
11245: if (exists($lonid_to_ip{$lonid})) {
11246: return $lonid_to_ip{$lonid};
11247: }
11248: my $name=&hostname($lonid);
11249: my $ip = gethostbyname($name);
11250: return if (!$ip || length($ip) ne 4);
11251: $ip=inet_ntoa($ip);
11252: $name_to_ip{$name} = $ip;
11253: $lonid_to_ip{$lonid} = $ip;
11254: return $ip;
11255: }
11256:
11257: sub get_iphost {
11258: my ($ignore_cache) = @_;
11259:
11260: if (!$ignore_cache) {
11261: if (%iphost) {
11262: return %iphost;
11263: }
11264: my ($ip_info,$cached)=
11265: &Apache::lonnet::is_cached_new('iphost','iphost');
11266: if ($cached) {
11267: %iphost = %{$ip_info->[0]};
11268: %name_to_ip = %{$ip_info->[1]};
11269: %lonid_to_ip = %{$ip_info->[2]};
11270: return %iphost;
11271: }
11272: }
11273:
11274: # get yesterday's info for fallback
11275: my %old_name_to_ip;
11276: my ($ip_info,$cached)=
11277: &Apache::lonnet::is_cached_new('iphost','iphost');
11278: if ($cached) {
11279: %old_name_to_ip = %{$ip_info->[1]};
11280: }
11281:
11282: my %name_to_host = &all_names();
11283: foreach my $name (keys(%name_to_host)) {
11284: my $ip;
11285: if (!exists($name_to_ip{$name})) {
11286: $ip = gethostbyname($name);
11287: if (!$ip || length($ip) ne 4) {
11288: if (defined($old_name_to_ip{$name})) {
11289: $ip = $old_name_to_ip{$name};
11290: &logthis("Can't find $name defaulting to old $ip");
11291: } else {
11292: &logthis("Name $name no IP found");
11293: next;
11294: }
11295: } else {
11296: $ip=inet_ntoa($ip);
11297: }
11298: $name_to_ip{$name} = $ip;
11299: } else {
11300: $ip = $name_to_ip{$name};
11301: }
11302: foreach my $id (@{ $name_to_host{$name} }) {
11303: $lonid_to_ip{$id} = $ip;
11304: }
11305: push(@{$iphost{$ip}},@{$name_to_host{$name}});
11306: }
11307: &Apache::lonnet::do_cache_new('iphost','iphost',
11308: [\%iphost,\%name_to_ip,\%lonid_to_ip],
11309: 48*60*60);
11310:
11311: return %iphost;
11312: }
11313:
11314: #
11315: # Given a DNS returns the loncapa host name for that DNS
11316: #
11317: sub host_from_dns {
11318: my ($dns) = @_;
11319: my @hosts;
11320: my $ip;
11321:
11322: if (exists($name_to_ip{$dns})) {
11323: $ip = $name_to_ip{$dns};
11324: }
11325: if (!$ip) {
11326: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
11327: if (length($ip) == 4) {
11328: $ip = &IO::Socket::inet_ntoa($ip);
11329: }
11330: }
11331: if ($ip) {
11332: @hosts = get_hosts_from_ip($ip);
11333: return $hosts[0];
11334: }
11335: return undef;
11336: }
11337:
11338: sub get_internet_names {
11339: my ($lonid) = @_;
11340: return if ($lonid eq '');
11341: my ($idnref,$cached)=
11342: &Apache::lonnet::is_cached_new('internetnames',$lonid);
11343: if ($cached) {
11344: return $idnref;
11345: }
11346: my $ip = &get_host_ip($lonid);
11347: my @hosts = &get_hosts_from_ip($ip);
11348: my %iphost = &get_iphost();
11349: my (@idns,%seen);
11350: foreach my $id (@hosts) {
11351: my $dom = &host_domain($id);
11352: my $prim_id = &domain($dom,'primary');
11353: my $prim_ip = &get_host_ip($prim_id);
11354: next if ($seen{$prim_ip});
11355: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
11356: foreach my $id (@{$iphost{$prim_ip}}) {
11357: my $intdom = &internet_dom($id);
11358: unless (grep(/^\Q$intdom\E$/,@idns)) {
11359: push(@idns,$intdom);
11360: }
11361: }
11362: }
11363: $seen{$prim_ip} = 1;
11364: }
11365: return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
11366: }
11367:
11368: }
11369:
11370: sub all_loncaparevs {
11371: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
11372: }
11373:
11374: BEGIN {
11375:
11376: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
11377: unless ($readit) {
11378: {
11379: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
11380: %perlvar = (%perlvar,%{$configvars});
11381: }
11382:
11383:
11384: # ------------------------------------------------------ Read spare server file
11385: {
11386: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
11387:
11388: while (my $configline=<$config>) {
11389: chomp($configline);
11390: if ($configline) {
11391: my ($host,$type) = split(':',$configline,2);
11392: if (!defined($type) || $type eq '') { $type = 'default' };
11393: push(@{ $spareid{$type} }, $host);
11394: }
11395: }
11396: close($config);
11397: }
11398: # ------------------------------------------------------------ Read permissions
11399: {
11400: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
11401:
11402: while (my $configline=<$config>) {
11403: chomp($configline);
11404: if ($configline) {
11405: my ($role,$perm)=split(/ /,$configline);
11406: if ($perm ne '') { $pr{$role}=$perm; }
11407: }
11408: }
11409: close($config);
11410: }
11411:
11412: # -------------------------------------------- Read plain texts for permissions
11413: {
11414: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
11415:
11416: while (my $configline=<$config>) {
11417: chomp($configline);
11418: if ($configline) {
11419: my ($short,@plain)=split(/:/,$configline);
11420: %{$prp{$short}} = ();
11421: if (@plain > 0) {
11422: $prp{$short}{'std'} = $plain[0];
11423: for (my $i=1; $i<@plain; $i++) {
11424: $prp{$short}{'alt'.$i} = $plain[$i];
11425: }
11426: }
11427: }
11428: }
11429: close($config);
11430: }
11431:
11432: # ---------------------------------------------------------- Read package table
11433: {
11434: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
11435:
11436: while (my $configline=<$config>) {
11437: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
11438: chomp($configline);
11439: my ($short,$plain)=split(/:/,$configline);
11440: my ($pack,$name)=split(/\&/,$short);
11441: if ($plain ne '') {
11442: $packagetab{$pack.'&'.$name.'&name'}=$name;
11443: $packagetab{$short}=$plain;
11444: }
11445: }
11446: close($config);
11447: }
11448:
11449: # ---------------------------------------------------------- Read loncaparev table
11450: {
11451: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
11452: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
11453: while (my $configline=<$config>) {
11454: chomp($configline);
11455: my ($hostid,$loncaparev)=split(/:/,$configline);
11456: $loncaparevs{$hostid}=$loncaparev;
11457: }
11458: close($config);
11459: }
11460: }
11461: }
11462:
11463: # ---------------------------------------------------------- Read serverhostID table
11464: {
11465: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
11466: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
11467: while (my $configline=<$config>) {
11468: chomp($configline);
11469: my ($name,$id)=split(/:/,$configline);
11470: $serverhomeIDs{$name}=$id;
11471: }
11472: close($config);
11473: }
11474: }
11475: }
11476:
11477: {
11478: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
11479: if (-e $file) {
11480: my $parser = HTML::LCParser->new($file);
11481: while (my $token = $parser->get_token()) {
11482: if ($token->[0] eq 'S') {
11483: my $item = $token->[1];
11484: my $name = $token->[2]{'name'};
11485: my $value = $token->[2]{'value'};
11486: if ($item ne '' && $name ne '' && $value ne '') {
11487: my $release = $parser->get_text();
11488: $release =~ s/(^\s*|\s*$ )//gx;
11489: $needsrelease{$item.':'.$name.':'.$value} = $release;
11490: }
11491: }
11492: }
11493: }
11494: }
11495:
11496: # ---------------------------------------------------------- Read managers table
11497: {
11498: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
11499: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
11500: while (my $configline=<$config>) {
11501: chomp($configline);
11502: next if ($configline =~ /^\#/);
11503: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
11504: $managerstab{$configline} = 1;
11505: }
11506: }
11507: close($config);
11508: }
11509: }
11510: }
11511:
11512: # ------------- set up temporary directory
11513: {
11514: $tmpdir = LONCAPA::tempdir();
11515:
11516: }
11517:
11518: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
11519: 'compress_threshold'=> 20_000,
11520: });
11521:
11522: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
11523: $dumpcount=0;
11524: $locknum=0;
11525:
11526: &logtouch();
11527: &logthis('<font color="yellow">INFO: Read configuration</font>');
11528: $readit=1;
11529: {
11530: use integer;
11531: my $test=(2**32)+1;
11532: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
11533: &logthis(" Detected 64bit platform ($_64bit)");
11534: }
11535: }
11536: }
11537:
11538: 1;
11539: __END__
11540:
11541: =pod
11542:
11543: =head1 NAME
11544:
11545: Apache::lonnet - Subroutines to ask questions about things in the network.
11546:
11547: =head1 SYNOPSIS
11548:
11549: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
11550:
11551: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
11552:
11553: Common parameters:
11554:
11555: =over 4
11556:
11557: =item *
11558:
11559: $uname : an internal username (if $cname expecting a course Id specifically)
11560:
11561: =item *
11562:
11563: $udom : a domain (if $cdom expecting a course's domain specifically)
11564:
11565: =item *
11566:
11567: $symb : a resource instance identifier
11568:
11569: =item *
11570:
11571: $namespace : the name of a .db file that contains the data needed or
11572: being set.
11573:
11574: =back
11575:
11576: =head1 OVERVIEW
11577:
11578: lonnet provides subroutines which interact with the
11579: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
11580: about classes, users, and resources.
11581:
11582: For many of these objects you can also use this to store data about
11583: them or modify them in various ways.
11584:
11585: =head2 Symbs
11586:
11587: To identify a specific instance of a resource, LON-CAPA uses symbols
11588: or "symbs"X<symb>. These identifiers are built from the URL of the
11589: map, the resource number of the resource in the map, and the URL of
11590: the resource itself. The latter is somewhat redundant, but might help
11591: if maps change.
11592:
11593: An example is
11594:
11595: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
11596:
11597: The respective map entry is
11598:
11599: <resource id="19" src="/res/msu/korte/tests/part12.problem"
11600: title="Problem 2">
11601: </resource>
11602:
11603: Symbs are used by the random number generator, as well as to store and
11604: restore data specific to a certain instance of for example a problem.
11605:
11606: =head2 Storing And Retrieving Data
11607:
11608: X<store()>X<cstore()>X<restore()>Three of the most important functions
11609: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
11610: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
11611: is is the non-critical message twin of cstore. These functions are for
11612: handlers to store a perl hash to a user's permanent data space in an
11613: easy manner, and to retrieve it again on another call. It is expected
11614: that a handler would use this once at the beginning to retrieve data,
11615: and then again once at the end to send only the new data back.
11616:
11617: The data is stored in the user's data directory on the user's
11618: homeserver under the ID of the course.
11619:
11620: The hash that is returned by restore will have all of the previous
11621: value for all of the elements of the hash.
11622:
11623: Example:
11624:
11625: #creating a hash
11626: my %hash;
11627: $hash{'foo'}='bar';
11628:
11629: #storing it
11630: &Apache::lonnet::cstore(\%hash);
11631:
11632: #changing a value
11633: $hash{'foo'}='notbar';
11634:
11635: #adding a new value
11636: $hash{'bar'}='foo';
11637: &Apache::lonnet::cstore(\%hash);
11638:
11639: #retrieving the hash
11640: my %history=&Apache::lonnet::restore();
11641:
11642: #print the hash
11643: foreach my $key (sort(keys(%history))) {
11644: print("\%history{$key} = $history{$key}");
11645: }
11646:
11647: Will print out:
11648:
11649: %history{1:foo} = bar
11650: %history{1:keys} = foo:timestamp
11651: %history{1:timestamp} = 990455579
11652: %history{2:bar} = foo
11653: %history{2:foo} = notbar
11654: %history{2:keys} = foo:bar:timestamp
11655: %history{2:timestamp} = 990455580
11656: %history{bar} = foo
11657: %history{foo} = notbar
11658: %history{timestamp} = 990455580
11659: %history{version} = 2
11660:
11661: Note that the special hash entries C<keys>, C<version> and
11662: C<timestamp> were added to the hash. C<version> will be equal to the
11663: total number of versions of the data that have been stored. The
11664: C<timestamp> attribute will be the UNIX time the hash was
11665: stored. C<keys> is available in every historical section to list which
11666: keys were added or changed at a specific historical revision of a
11667: hash.
11668:
11669: B<Warning>: do not store the hash that restore returns directly. This
11670: will cause a mess since it will restore the historical keys as if the
11671: were new keys. I.E. 1:foo will become 1:1:foo etc.
11672:
11673: Calling convention:
11674:
11675: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
11676: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
11677:
11678: For more detailed information, see lonnet specific documentation.
11679:
11680: =head1 RETURN MESSAGES
11681:
11682: =over 4
11683:
11684: =item * B<con_lost>: unable to contact remote host
11685:
11686: =item * B<con_delayed>: unable to contact remote host, message will be delivered
11687: when the connection is brought back up
11688:
11689: =item * B<con_failed>: unable to contact remote host and unable to save message
11690: for later delivery
11691:
11692: =item * B<error:>: an error a occurred, a description of the error follows the :
11693:
11694: =item * B<no_such_host>: unable to fund a host associated with the user/domain
11695: that was requested
11696:
11697: =back
11698:
11699: =head1 PUBLIC SUBROUTINES
11700:
11701: =head2 Session Environment Functions
11702:
11703: =over 4
11704:
11705: =item *
11706: X<appenv()>
11707: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
11708: the user envirnoment file, and will be restored for each access this
11709: user makes during this session, also modifies the %env for the current
11710: process. Optional rolesarrayref - if defined contains a reference to an array
11711: of roles which are exempt from the restriction on modifying user.role entries
11712: in the user's environment.db and in %env.
11713:
11714: =item *
11715: X<delenv()>
11716: B<delenv($delthis,$regexp)>: removes all items from the session
11717: environment file that begin with $delthis. If the
11718: optional second arg - $regexp - is true, $delthis is treated as a
11719: regular expression, otherwise \Q$delthis\E is used.
11720: The values are also deleted from the current processes %env.
11721:
11722: =item * get_env_multiple($name)
11723:
11724: gets $name from the %env hash, it seemlessly handles the cases where multiple
11725: values may be defined and end up as an array ref.
11726:
11727: returns an array of values
11728:
11729: =back
11730:
11731: =head2 User Information
11732:
11733: =over 4
11734:
11735: =item *
11736: X<queryauthenticate()>
11737: B<queryauthenticate($uname,$udom)>: try to determine user's current
11738: authentication scheme
11739:
11740: =item *
11741: X<authenticate()>
11742: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
11743: authenticate user from domain's lib servers (first use the current
11744: one). C<$upass> should be the users password.
11745: $checkdefauth is optional (value is 1 if a check should be made to
11746: authenticate user using default authentication method, and allow
11747: account creation if username does not have account in the domain).
11748: $clientcancheckhost is optional (value is 1 if checking whether the
11749: server can host will occur on the client side in lonauth.pm).
11750:
11751: =item *
11752: X<homeserver()>
11753: B<homeserver($uname,$udom)>: find the server which has
11754: the user's directory and files (there must be only one), this caches
11755: the answer, and also caches if there is a borken connection.
11756:
11757: =item *
11758: X<idget()>
11759: B<idget($udom,@ids)>: find the usernames behind a list of IDs
11760: (IDs are a unique resource in a domain, there must be only 1 ID per
11761: username, and only 1 username per ID in a specific domain) (returns
11762: hash: id=>name,id=>name)
11763:
11764: =item *
11765: X<idrget()>
11766: B<idrget($udom,@unames)>: find the IDs behind a list of
11767: usernames (returns hash: name=>id,name=>id)
11768:
11769: =item *
11770: X<idput()>
11771: B<idput($udom,%ids)>: store away a list of names and associated IDs
11772:
11773: =item *
11774: X<rolesinit()>
11775: B<rolesinit($udom,$username)>: get user privileges.
11776: returns user role, first access and timer interval hashes
11777:
11778: =item *
11779: X<privileged()>
11780: B<privileged($username,$domain)>: returns a true if user has a
11781: privileged and active role (i.e. su or dc), false otherwise.
11782:
11783: =item *
11784: X<getsection()>
11785: B<getsection($udom,$uname,$cname)>: finds the section of student in the
11786: course $cname, return section name/number or '' for "not in course"
11787: and '-1' for "no section"
11788:
11789: =item *
11790: X<userenvironment()>
11791: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
11792: passed in @what from the requested user's environment, returns a hash
11793:
11794: =item *
11795: X<userlog_query()>
11796: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
11797: activity.log file. %filters defines filters applied when parsing the
11798: log file. These can be start or end timestamps, or the type of action
11799: - log to look for Login or Logout events, check for Checkin or
11800: Checkout, role for role selection. The response is in the form
11801: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
11802: escaped strings of the action recorded in the activity.log file.
11803:
11804: =back
11805:
11806: =head2 User Roles
11807:
11808: =over 4
11809:
11810: =item *
11811:
11812: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
11813: F: full access
11814: U,I,K: authentication modes (cxx only)
11815: '': forbidden
11816: 1: user needs to choose course
11817: 2: browse allowed
11818: A: passphrase authentication needed
11819:
11820: =item *
11821:
11822: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
11823: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
11824: and course level
11825:
11826: =item *
11827:
11828: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
11829: (rolesplain.tab); plain text explanation of a user role term.
11830: $type is Course (default) or Community.
11831: If $forcedefault evaluates to true, text returned will be default
11832: text for $type. Otherwise, if this is a course, the text returned
11833: will be a custom name for the role (if defined in the course's
11834: environment). If no custom name is defined the default is returned.
11835:
11836: =item *
11837:
11838: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
11839: All arguments are optional. Returns a hash of a roles, either for
11840: co-author/assistant author roles for a user's Construction Space
11841: (default), or if $context is 'userroles', roles for the user himself,
11842: In the hash, keys are set to colon-separated $uname,$udom,$role, and
11843: (optionally) if $withsec is true, a fourth colon-separated item - $section.
11844: For each key, value is set to colon-separated start and end times for
11845: the role. If no username and domain are specified, will default to
11846: current user/domain. Types, roles, and roledoms are references to arrays
11847: of role statuses (active, future or previous), roles
11848: (e.g., cc,in, st etc.) and domains of the roles which can be used
11849: to restrict the list of roles reported. If no array ref is
11850: provided for types, will default to return only active roles.
11851:
11852: =back
11853:
11854: =head2 User Modification
11855:
11856: =over 4
11857:
11858: =item *
11859:
11860: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
11861: user for the level given by URL. Optional start and end dates (leave empty
11862: string or zero for "no date")
11863:
11864: =item *
11865:
11866: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
11867: change a users, password, possible return values are: ok,
11868: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
11869: refused
11870:
11871: =item *
11872:
11873: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
11874:
11875: =item *
11876:
11877: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
11878: $forceid,$desiredhome,$email,$inststatus,$candelete) :
11879:
11880: will update user information (firstname,middlename,lastname,generation,
11881: permanentemail), and if forceid is true, student/employee ID also.
11882: A user's institutional affiliation(s) can also be updated.
11883: User information fields will not be overwritten with empty entries
11884: unless the field is included in the $candelete array reference.
11885: This array is included when a single user is modified via "Manage Users",
11886: or when Autoupdate.pl is run by cron in a domain.
11887:
11888: =item *
11889:
11890: modifystudent
11891:
11892: modify a student's enrollment and identification information.
11893: The course id is resolved based on the current users environment.
11894: This means the envoking user must be a course coordinator or otherwise
11895: associated with a course.
11896:
11897: This call is essentially a wrapper for lonnet::modifyuser and
11898: lonnet::modify_student_enrollment
11899:
11900: Inputs:
11901:
11902: =over 4
11903:
11904: =item B<$udom> Student's loncapa domain
11905:
11906: =item B<$uname> Student's loncapa login name
11907:
11908: =item B<$uid> Student/Employee ID
11909:
11910: =item B<$umode> Student's authentication mode
11911:
11912: =item B<$upass> Student's password
11913:
11914: =item B<$first> Student's first name
11915:
11916: =item B<$middle> Student's middle name
11917:
11918: =item B<$last> Student's last name
11919:
11920: =item B<$gene> Student's generation
11921:
11922: =item B<$usec> Student's section in course
11923:
11924: =item B<$end> Unix time of the roles expiration
11925:
11926: =item B<$start> Unix time of the roles start date
11927:
11928: =item B<$forceid> If defined, allow $uid to be changed
11929:
11930: =item B<$desiredhome> server to use as home server for student
11931:
11932: =item B<$email> Student's permanent e-mail address
11933:
11934: =item B<$type> Type of enrollment (auto or manual)
11935:
11936: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
11937:
11938: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
11939:
11940: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
11941:
11942: =item B<$context> role change context (shown in User Management Logs display in a course)
11943:
11944: =item B<$inststatus> institutional status of user - : separated string of escaped status types
11945:
11946: =back
11947:
11948: =item *
11949:
11950: modify_student_enrollment
11951:
11952: Change a students enrollment status in a class. The environment variable
11953: 'role.request.course' must be defined for this function to proceed.
11954:
11955: Inputs:
11956:
11957: =over 4
11958:
11959: =item $udom, students domain
11960:
11961: =item $uname, students name
11962:
11963: =item $uid, students user id
11964:
11965: =item $first, students first name
11966:
11967: =item $middle
11968:
11969: =item $last
11970:
11971: =item $gene
11972:
11973: =item $usec
11974:
11975: =item $end
11976:
11977: =item $start
11978:
11979: =item $type
11980:
11981: =item $locktype
11982:
11983: =item $cid
11984:
11985: =item $selfenroll
11986:
11987: =item $context
11988:
11989: =back
11990:
11991:
11992: =item *
11993:
11994: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
11995: custom role; give a custom role to a user for the level given by URL. Specify
11996: name and domain of role author, and role name
11997:
11998: =item *
11999:
12000: revokerole($udom,$uname,$url,$role) : revoke a role for url
12001:
12002: =item *
12003:
12004: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
12005:
12006: =back
12007:
12008: =head2 Course Infomation
12009:
12010: =over 4
12011:
12012: =item *
12013:
12014: coursedescription($courseid,$options) : returns a hash of information about the
12015: specified course id, including all environment settings for the
12016: course, the description of the course will be in the hash under the
12017: key 'description'
12018:
12019: $options is an optional parameter that if supplied is a hash reference that controls
12020: what how this function works. It has the following key/values:
12021:
12022: =over 4
12023:
12024: =item freshen_cache
12025:
12026: If defined, and the environment cache for the course is valid, it is
12027: returned in the returned hash.
12028:
12029: =item one_time
12030:
12031: If defined, the last cache time is set to _now_
12032:
12033: =item user
12034:
12035: If defined, the supplied username is used instead of the current user.
12036:
12037:
12038: =back
12039:
12040: =item *
12041:
12042: resdata($name,$domain,$type,@which) : request for current parameter
12043: setting for a specific $type, where $type is either 'course' or 'user',
12044: @what should be a list of parameters to ask about. This routine caches
12045: answers for 5 minutes.
12046:
12047: =item *
12048:
12049: get_courseresdata($courseid, $domain) : dump the entire course resource
12050: data base, returning a hash that is keyed by the resource name and has
12051: values that are the resource value. I believe that the timestamps and
12052: versions are also returned.
12053:
12054:
12055: =back
12056:
12057: =head2 Course Modification
12058:
12059: =over 4
12060:
12061: =item *
12062:
12063: writecoursepref($courseid,%prefs) : write preferences (environment
12064: database) for a course
12065:
12066: =item *
12067:
12068: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
12069:
12070: =item *
12071:
12072: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
12073:
12074: =item *
12075:
12076: is_course($courseid), is_course($cdom, $cnum)
12077:
12078: Accepts either a combined $courseid (in the form of domain_courseid) or the
12079: two component version $cdom, $cnum. It checks if the specified course exists.
12080:
12081: Returns:
12082: undef if the course doesn't exist, otherwise
12083: in scalar context the combined courseid.
12084: in list context the two components of the course identifier, domain and
12085: courseid.
12086:
12087: =back
12088:
12089: =head2 Resource Subroutines
12090:
12091: =over 4
12092:
12093: =item *
12094:
12095: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
12096:
12097: =item *
12098:
12099: repcopy($filename) : subscribes to the requested file, and attempts to
12100: replicate from the owning library server, Might return
12101: 'unavailable', 'not_found', 'forbidden', 'ok', or
12102: 'bad_request', also attempts to grab the metadata for the
12103: resource. Expects the local filesystem pathname
12104: (/home/httpd/html/res/....)
12105:
12106: =back
12107:
12108: =head2 Resource Information
12109:
12110: =over 4
12111:
12112: =item *
12113:
12114: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
12115: a vairety of different possible values, $varname should be a request
12116: string, and the other parameters can be used to specify who and what
12117: one is asking about.
12118:
12119: Possible values for $varname are environment.lastname (or other item
12120: from the envirnment hash), user.name (or someother aspect about the
12121: user), resource.0.maxtries (or some other part and parameter of a
12122: resource)
12123:
12124: =item *
12125:
12126: directcondval($number) : get current value of a condition; reads from a state
12127: string
12128:
12129: =item *
12130:
12131: condval($condidx) : value of condition index based on state
12132:
12133: =item *
12134:
12135: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
12136: resource's metadata, $what should be either a specific key, or either
12137: 'keys' (to get a list of possible keys) or 'packages' to get a list of
12138: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
12139:
12140: this function automatically caches all requests
12141:
12142: =item *
12143:
12144: metadata_query($query,$custom,$customshow) : make a metadata query against the
12145: network of library servers; returns file handle of where SQL and regex results
12146: will be stored for query
12147:
12148: =item *
12149:
12150: symbread($filename) : return symbolic list entry (filename argument optional);
12151: returns the data handle
12152:
12153: =item *
12154:
12155: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
12156: a possible symb for the URL in $thisfn, and if is an encryypted
12157: resource that the user accessed using /enc/ returns a 1 on success, 0
12158: on failure, user must be in a course, as it assumes the existance of
12159: the course initial hash, and uses $env('request.course.id'}
12160:
12161:
12162: =item *
12163:
12164: symbclean($symb) : removes versions numbers from a symb, returns the
12165: cleaned symb
12166:
12167: =item *
12168:
12169: is_on_map($uri) : checks if the $uri is somewhere on the current
12170: course map, user must be in a course for it to work.
12171:
12172: =item *
12173:
12174: numval($salt) : return random seed value (addend for rndseed)
12175:
12176: =item *
12177:
12178: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
12179: a random seed, all arguments are optional, if they aren't sent it uses the
12180: environment to derive them. Note: if symb isn't sent and it can't get one
12181: from &symbread it will use the current time as its return value
12182:
12183: =item *
12184:
12185: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
12186: unfakeable, receipt
12187:
12188: =item *
12189:
12190: receipt() : API to ireceipt working off of env values; given out to users
12191:
12192: =item *
12193:
12194: countacc($url) : count the number of accesses to a given URL
12195:
12196: =item *
12197:
12198: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
12199:
12200: =item *
12201:
12202: checkin($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 $tcrsid)
12203:
12204: =item *
12205:
12206: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
12207:
12208: =item *
12209:
12210: devalidate($symb) : devalidate temporary spreadsheet calculations,
12211: forcing spreadsheet to reevaluate the resource scores next time.
12212:
12213: =back
12214:
12215: =head2 Storing/Retreiving Data
12216:
12217: =over 4
12218:
12219: =item *
12220:
12221: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
12222: for this url; hashref needs to be given and should be a \%hashname; the
12223: remaining args aren't required and if they aren't passed or are '' they will
12224: be derived from the env
12225:
12226: =item *
12227:
12228: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
12229: uses critical subroutine
12230:
12231: =item *
12232:
12233: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
12234: all args are optional
12235:
12236: =item *
12237:
12238: dumpstore($namespace,$udom,$uname,$regexp,$range) :
12239: dumps the complete (or key matching regexp) namespace into a hash
12240: ($udom, $uname, $regexp, $range are optional) for a namespace that is
12241: normally &store()ed into
12242:
12243: $range should be either an integer '100' (give me the first 100
12244: matching records)
12245: or be two integers sperated by a - with no spaces
12246: '30-50' (give me the 30th through the 50th matching
12247: records)
12248:
12249:
12250: =item *
12251:
12252: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
12253: replaces a &store() version of data with a replacement set of data
12254: for a particular resource in a namespace passed in the $storehash hash
12255: reference
12256:
12257: =item *
12258:
12259: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
12260: works very similar to store/cstore, but all data is stored in a
12261: temporary location and can be reset using tmpreset, $storehash should
12262: be a hash reference, returns nothing on success
12263:
12264: =item *
12265:
12266: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
12267: similar to restore, but all data is stored in a temporary location and
12268: can be reset using tmpreset. Returns a hash of values on success,
12269: error string otherwise.
12270:
12271: =item *
12272:
12273: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
12274: deltes all keys for $symb form the temporary storage hash.
12275:
12276: =item *
12277:
12278: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12279: reference filled in from namesp ($udom and $uname are optional)
12280:
12281: =item *
12282:
12283: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
12284: namesp ($udom and $uname are optional)
12285:
12286: =item *
12287:
12288: dump($namespace,$udom,$uname,$regexp,$range) :
12289: dumps the complete (or key matching regexp) namespace into a hash
12290: ($udom, $uname, $regexp, $range are optional)
12291:
12292: $range should be either an integer '100' (give me the first 100
12293: matching records)
12294: or be two integers sperated by a - with no spaces
12295: '30-50' (give me the 30th through the 50th matching
12296: records)
12297: =item *
12298:
12299: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
12300: $store can be a scalar, an array reference, or if the amount to be
12301: incremented is > 1, a hash reference.
12302:
12303: ($udom and $uname are optional)
12304:
12305: =item *
12306:
12307: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
12308: ($udom and $uname are optional)
12309:
12310: =item *
12311:
12312: cput($namespace,$storehash,$udom,$uname) : critical put
12313: ($udom and $uname are optional)
12314:
12315: =item *
12316:
12317: newput($namespace,$storehash,$udom,$uname) :
12318:
12319: Attempts to store the items in the $storehash, but only if they don't
12320: currently exist, if this succeeds you can be certain that you have
12321: successfully created a new key value pair in the $namespace db.
12322:
12323:
12324: Args:
12325: $namespace: name of database to store values to
12326: $storehash: hashref to store to the db
12327: $udom: (optional) domain of user containing the db
12328: $uname: (optional) name of user caontaining the db
12329:
12330: Returns:
12331: 'ok' -> succeeded in storing all keys of $storehash
12332: 'key_exists: <key>' -> failed to anything out of $storehash, as at
12333: least <key> already existed in the db (other
12334: requested keys may also already exist)
12335: 'error: <msg>' -> unable to tie the DB or other error occurred
12336: 'con_lost' -> unable to contact request server
12337: 'refused' -> action was not allowed by remote machine
12338:
12339:
12340: =item *
12341:
12342: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
12343: reference filled in from namesp (encrypts the return communication)
12344: ($udom and $uname are optional)
12345:
12346: =item *
12347:
12348: log($udom,$name,$home,$message) : write to permanent log for user; use
12349: critical subroutine
12350:
12351: =item *
12352:
12353: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
12354: array reference filled in from namespace found in domain level on either
12355: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
12356:
12357: =item *
12358:
12359: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
12360: domain level either on specified domain server ($uhome) or primary domain
12361: server ($udom and $uhome are optional)
12362:
12363: =item *
12364:
12365: get_domain_defaults($target_domain) : returns hash with defaults for
12366: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
12367: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
12368: or localauth), initial password or a kerberos realm, language (e.g., en-us).
12369: Values are retrieved from cache (if current), or from domain's configuration.db
12370: (if available), or lastly from values in lonTabs/dns_domain,tab,
12371: or lonTabs/domain.tab.
12372:
12373: %domdefaults = &get_auth_defaults($target_domain);
12374:
12375: =back
12376:
12377: =head2 Network Status Functions
12378:
12379: =over 4
12380:
12381: =item *
12382:
12383: dirlist() : return directory list based on URI (first arg).
12384:
12385: Inputs: 1 required, 5 optional.
12386:
12387: =over
12388:
12389: =item
12390: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
12391:
12392: =item
12393: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
12394:
12395: =item
12396: $username - username of user/course to be listed. Extracted from $uri if absent.
12397:
12398: =item
12399: $getpropath - boolean: 1 if prepend path using &propath().
12400:
12401: =item
12402: $getuserdir - boolean: 1 if prepend path for "userfiles".
12403:
12404: =item
12405: $alternateRoot - path to prepend in place of path from $uri.
12406:
12407: =back
12408:
12409: Returns: Array of up to two items.
12410:
12411: =over
12412:
12413: a reference to an array of files/subdirectories
12414:
12415: =over
12416:
12417: Each element in the array of files/subdirectories is a & separated list of
12418: item name and the result of running stat on the item. If dirlist was requested
12419: for a file instead of a directory, the item name will be ''. For a directory
12420: listing, if the item is a metadata file, the element will end &N&M
12421: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
12422: default copyright set (1).
12423:
12424: =back
12425:
12426: a scalar containing error condition (if encountered).
12427:
12428: =over
12429:
12430: =item
12431: no_host (no homeserver identified for $username:$domain).
12432:
12433: =item
12434: no_such_host (server contacted for listing not identified as valid host).
12435:
12436: =item
12437: con_lost (connection to remote server failed).
12438:
12439: =item
12440: refused (invalid $username:$domain received on lond side).
12441:
12442: =item
12443: no_such_dir (directory at specified path on lond side does not exist).
12444:
12445: =item
12446: empty (directory at specified path on lond side is empty).
12447:
12448: =over
12449:
12450: This is currently not encountered because the &ls3, &ls2,
12451: &ls (_handler) routines on the lond side do not filter out
12452: . and .. from a directory listing.
12453:
12454: =back
12455:
12456: =back
12457:
12458: =back
12459:
12460: =item *
12461:
12462: spareserver() : find server with least workload from spare.tab
12463:
12464:
12465: =item *
12466:
12467: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
12468: if there is no corresponding loncapa host.
12469:
12470: =back
12471:
12472:
12473: =head2 Apache Request
12474:
12475: =over 4
12476:
12477: =item *
12478:
12479: ssi($url,%hash) : server side include, does a complete request cycle on url to
12480: localhost, posts hash
12481:
12482: =back
12483:
12484: =head2 Data to String to Data
12485:
12486: =over 4
12487:
12488: =item *
12489:
12490: hash2str(%hash) : convert a hash into a string complete with escaping and '='
12491: and '&' separators, supports elements that are arrayrefs and hashrefs
12492:
12493: =item *
12494:
12495: hashref2str($hashref) : convert a hashref into a string complete with
12496: escaping and '=' and '&' separators, supports elements that are
12497: arrayrefs and hashrefs
12498:
12499: =item *
12500:
12501: arrayref2str($arrayref) : convert an arrayref into a string complete
12502: with escaping and '&' separators, supports elements that are arrayrefs
12503: and hashrefs
12504:
12505: =item *
12506:
12507: str2hash($string) : convert string to hash using unescaping and
12508: splitting on '=' and '&', supports elements that are arrayrefs and
12509: hashrefs
12510:
12511: =item *
12512:
12513: str2array($string) : convert string to hash using unescaping and
12514: splitting on '&', supports elements that are arrayrefs and hashrefs
12515:
12516: =back
12517:
12518: =head2 Logging Routines
12519:
12520:
12521: These routines allow one to make log messages in the lonnet.log and
12522: lonnet.perm logfiles.
12523:
12524: =over 4
12525:
12526: =item *
12527:
12528: logtouch() : make sure the logfile, lonnet.log, exists
12529:
12530: =item *
12531:
12532: logthis() : append message to the normal lonnet.log file, it gets
12533: preiodically rolled over and deleted.
12534:
12535: =item *
12536:
12537: logperm() : append a permanent message to lonnet.perm.log, this log
12538: file never gets deleted by any automated portion of the system, only
12539: messages of critical importance should go in here.
12540:
12541:
12542: =back
12543:
12544: =head2 General File Helper Routines
12545:
12546: =over 4
12547:
12548: =item *
12549:
12550: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
12551: (a) files in /uploaded
12552: (i) If a local copy of the file exists -
12553: compares modification date of local copy with last-modified date for
12554: definitive version stored on home server for course. If local copy is
12555: stale, requests a new version from the home server and stores it.
12556: If the original has been removed from the home server, then local copy
12557: is unlinked.
12558: (ii) If local copy does not exist -
12559: requests the file from the home server and stores it.
12560:
12561: If $caller is 'uploadrep':
12562: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
12563: for request for files originally uploaded via DOCS.
12564: - returns 'ok' if fresh local copy now available, -1 otherwise.
12565:
12566: Otherwise:
12567: This indicates a call from the content generation phase of the request.
12568: - returns the entire contents of the file or -1.
12569:
12570: (b) files in /res
12571: - returns the entire contents of a file or -1;
12572: it properly subscribes to and replicates the file if neccessary.
12573:
12574:
12575: =item *
12576:
12577: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
12578: reference
12579:
12580: returns either a stat() list of data about the file or an empty list
12581: if the file doesn't exist or couldn't find out about it (connection
12582: problems or user unknown)
12583:
12584: =item *
12585:
12586: filelocation($dir,$file) : returns file system location of a file
12587: based on URI; meant to be "fairly clean" absolute reference, $dir is a
12588: directory that relative $file lookups are to looked in ($dir of /a/dir
12589: and a file of ../bob will become /a/bob)
12590:
12591: =item *
12592:
12593: hreflocation($dir,$file) : returns file system location or a URL; same as
12594: filelocation except for hrefs
12595:
12596: =item *
12597:
12598: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
12599:
12600: =back
12601:
12602: =head2 Usererfile file routines (/uploaded*)
12603:
12604: =over 4
12605:
12606: =item *
12607:
12608: userfileupload(): main rotine for putting a file in a user or course's
12609: filespace, arguments are,
12610:
12611: formname - required - this is the name of the element in $env where the
12612: filename, and the contents of the file to create/modifed exist
12613: the filename is in $env{'form.'.$formname.'.filename'} and the
12614: contents of the file is located in $env{'form.'.$formname}
12615: context - if coursedoc, store the file in the course of the active role
12616: of the current user;
12617: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
12618: if 'canceloverwrite': delete file in tmp/overwrites directory
12619: subdir - required - subdirectory to put the file in under ../userfiles/
12620: if undefined, it will be placed in "unknown"
12621:
12622: (This routine calls clean_filename() to remove any dangerous
12623: characters from the filename, and then calls finuserfileupload() to
12624: complete the transaction)
12625:
12626: returns either the url of the uploaded file (/uploaded/....) if successful
12627: and /adm/notfound.html if unsuccessful
12628:
12629: =item *
12630:
12631: clean_filename(): routine for cleaing a filename up for storage in
12632: userfile space, argument is:
12633:
12634: filename - proposed filename
12635:
12636: returns: the new clean filename
12637:
12638: =item *
12639:
12640: finishuserfileupload(): routine that creates and sends the file to
12641: userspace, probably shouldn't be called directly
12642:
12643: docuname: username or courseid of destination for the file
12644: docudom: domain of user/course of destination for the file
12645: formname: same as for userfileupload()
12646: fname: filename (including subdirectories) for the file
12647: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
12648: allfiles: reference to hash used to store objects found by parser
12649: codebase: reference to hash used for codebases of java objects found by parser
12650: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
12651: thumbheight: height (pixels) of thumbnail to be created for uploaded image
12652: resizewidth: width to be used to resize image using resizeImage from ImageMagick
12653: resizeheight: height to be used to resize image using resizeImage from ImageMagick
12654: context: if 'overwrite', will move the uploaded file from its temporary location to
12655: userfiles to facilitate overwriting a previously uploaded file with same name.
12656: mimetype: reference to scalar to accommodate mime type determined
12657: from File::MMagic if $parser = parse.
12658:
12659: returns either the url of the uploaded file (/uploaded/....) if successful
12660: and /adm/notfound.html if unsuccessful (or an error message if context
12661: was 'overwrite').
12662:
12663:
12664: =item *
12665:
12666: renameuserfile(): renames an existing userfile to a new name
12667:
12668: Args:
12669: docuname: username or courseid of destination for the file
12670: docudom: domain of user/course of destination for the file
12671: old: current file name (including any subdirs under userfiles)
12672: new: desired file name (including any subdirs under userfiles)
12673:
12674: =item *
12675:
12676: mkdiruserfile(): creates a directory is a userfiles dir
12677:
12678: Args:
12679: docuname: username or courseid of destination for the file
12680: docudom: domain of user/course of destination for the file
12681: dir: dir to create (including any subdirs under userfiles)
12682:
12683: =item *
12684:
12685: removeuserfile(): removes a file that exists in userfiles
12686:
12687: Args:
12688: docuname: username or courseid of destination for the file
12689: docudom: domain of user/course of destination for the file
12690: fname: filname to delete (including any subdirs under userfiles)
12691:
12692: =item *
12693:
12694: removeuploadedurl(): convience function for removeuserfile()
12695:
12696: Args:
12697: url: a full /uploaded/... url to delete
12698:
12699: =item *
12700:
12701: get_portfile_permissions():
12702: Args:
12703: domain: domain of user or course contain the portfolio files
12704: user: name of user or num of course contain the portfolio files
12705: Returns:
12706: hashref of a dump of the proper file_permissions.db
12707:
12708:
12709: =item *
12710:
12711: get_access_controls():
12712:
12713: Args:
12714: current_permissions: the hash ref returned from get_portfile_permissions()
12715: group: (optional) the group you want the files associated with
12716: file: (optional) the file you want access info on
12717:
12718: Returns:
12719: a hash (keys are file names) of hashes containing
12720: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
12721: values are XML containing access control settings (see below)
12722:
12723: Internal notes:
12724:
12725: access controls are stored in file_permissions.db as key=value pairs.
12726: key -> path to file/file_name\0uniqueID:scope_end_start
12727: where scope -> public,guest,course,group,domains or users.
12728: end -> UNIX time for end of access (0 -> no end date)
12729: start -> UNIX time for start of access
12730:
12731: value -> XML description of access control
12732: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
12733: <start></start>
12734: <end></end>
12735:
12736: <password></password> for scope type = guest
12737:
12738: <domain></domain> for scope type = course or group
12739: <number></number>
12740: <roles id="">
12741: <role></role>
12742: <access></access>
12743: <section></section>
12744: <group></group>
12745: </roles>
12746:
12747: <dom></dom> for scope type = domains
12748:
12749: <users> for scope type = users
12750: <user>
12751: <uname></uname>
12752: <udom></udom>
12753: </user>
12754: </users>
12755: </scope>
12756:
12757: Access data is also aggregated for each file in an additional key=value pair:
12758: key -> path to file/file_name\0accesscontrol
12759: value -> reference to hash
12760: hash contains key = value pairs
12761: where key = uniqueID:scope_end_start
12762: value = UNIX time record was last updated
12763:
12764: Used to improve speed of look-ups of access controls for each file.
12765:
12766: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
12767:
12768: modify_access_controls():
12769:
12770: Modifies access controls for a portfolio file
12771: Args
12772: 1. file name
12773: 2. reference to hash of required changes,
12774: 3. domain
12775: 4. username
12776: where domain,username are the domain of the portfolio owner
12777: (either a user or a course)
12778:
12779: Returns:
12780: 1. result of additions or updates ('ok' or 'error', with error message).
12781: 2. result of deletions ('ok' or 'error', with error message).
12782: 3. reference to hash of any new or updated access controls.
12783: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
12784: key = integer (inbound ID)
12785: value = uniqueID
12786:
12787: =back
12788:
12789: =head2 HTTP Helper Routines
12790:
12791: =over 4
12792:
12793: =item *
12794:
12795: escape() : unpack non-word characters into CGI-compatible hex codes
12796:
12797: =item *
12798:
12799: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
12800:
12801: =back
12802:
12803: =head1 PRIVATE SUBROUTINES
12804:
12805: =head2 Underlying communication routines (Shouldn't call)
12806:
12807: =over 4
12808:
12809: =item *
12810:
12811: subreply() : tries to pass a message to lonc, returns con_lost if incapable
12812:
12813: =item *
12814:
12815: reply() : uses subreply to send a message to remote machine, logs all failures
12816:
12817: =item *
12818:
12819: critical() : passes a critical message to another server; if cannot
12820: get through then place message in connection buffer directory and
12821: returns con_delayed, if incapable of saving message, returns
12822: con_failed
12823:
12824: =item *
12825:
12826: reconlonc() : tries to reconnect lonc client processes.
12827:
12828: =back
12829:
12830: =head2 Resource Access Logging
12831:
12832: =over 4
12833:
12834: =item *
12835:
12836: flushcourselogs() : flush (save) buffer logs and access logs
12837:
12838: =item *
12839:
12840: courselog($what) : save message for course in hash
12841:
12842: =item *
12843:
12844: courseacclog($what) : save message for course using &courselog(). Perform
12845: special processing for specific resource types (problems, exams, quizzes, etc).
12846:
12847: =item *
12848:
12849: goodbye() : flush course logs and log shutting down; it is called in srm.conf
12850: as a PerlChildExitHandler
12851:
12852: =back
12853:
12854: =head2 Other
12855:
12856: =over 4
12857:
12858: =item *
12859:
12860: symblist($mapname,%newhash) : update symbolic storage links
12861:
12862: =back
12863:
12864: =cut
12865:
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